1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <title>The XML C parser and toolkit of Gnome</title> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> 7 </head> 8 <body bgcolor="#ffffff"> 9 <h1 align="center">The XML C parser and toolkit of Gnome</h1> 10 11 <h1>Note: this is the flat content of the <a href="index.html">web 12 site</a></h1> 13 14 <h1 style="text-align: center">libxml, a.k.a. gnome-xml</h1> 15 16 <p></p> 17 18 <p 19 style="text-align: right; font-style: italic; font-size: 10pt">"Programming 20 with libxml2 is like the thrilling embrace of an exotic stranger." <a 21 href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark 22 Pilgrim</a></p> 23 24 <p>Libxml2 is the XML C parser and toolkit developed for the Gnome project 25 (but usable outside of the Gnome platform), it is free software available 26 under the <a href="http://www.opensource.org/licenses/mit-license.html">MIT 27 License</a>. XML itself is a metalanguage to design markup languages, i.e. 28 text language where semantic and structure are added to the content using 29 extra "markup" information enclosed between angle brackets. HTML is the most 30 well-known markup language. Though the library is written in C <a 31 href="python.html">a variety of language bindings</a> make it available in 32 other environments.</p> 33 34 <p>Libxml2 is known to be very portable, the library should build and work 35 without serious troubles on a variety of systems (Linux, Unix, Windows, 36 CygWin, MacOS, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, VxWorks, ...)</p> 37 38 <p>Libxml2 implements a number of existing standards related to markup 39 languages:</p> 40 <ul> 41 <li>the XML standard: <a 42 href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a></li> 43 <li>Namespaces in XML: <a 44 href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a></li> 45 <li>XML Base: <a 46 href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a></li> 47 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> : 48 Uniform Resource Identifiers <a 49 href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a></li> 50 <li>XML Path Language (XPath) 1.0: <a 51 href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a></li> 52 <li>HTML4 parser: <a 53 href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></li> 54 <li>XML Pointer Language (XPointer) Version 1.0: <a 55 href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a></li> 56 <li>XML Inclusions (XInclude) Version 1.0: <a 57 href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a></li> 58 <li>ISO-8859-x encodings, as well as <a 59 href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8] 60 and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a> 61 [UTF-16] Unicode encodings, and more if using iconv support</li> 62 <li>part of SGML Open Technical Resolution TR9401:1997</li> 63 <li>XML Catalogs Working Draft 06 August 2001: <a 64 href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a></li> 65 <li>Canonical XML Version 1.0: <a 66 href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a> 67 and the Exclusive XML Canonicalization CR draft <a 68 href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a></li> 69 <li>Relax NG, ISO/IEC 19757-2:2003, <a 70 href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html</a></li> 71 <li>W3C XML Schemas Part 2: Datatypes <a 72 href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May 73 2001</a></li> 74 <li>W3C <a href="http://www.w3.org/TR/xml-id/">xml:id</a> Working Draft 7 75 April 2004</li> 76 </ul> 77 78 <p>In most cases libxml2 tries to implement the specifications in a 79 relatively strictly compliant way. As of release 2.4.16, libxml2 passed all 80 1800+ tests from the <a 81 href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests 82 Suite</a>.</p> 83 84 <p>To some extent libxml2 provides support for the following additional 85 specifications but doesn't claim to implement them completely:</p> 86 <ul> 87 <li>Document Object Model (DOM) <a 88 href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a> 89 the document model, but it doesn't implement the API itself, gdome2 does 90 this on top of libxml2</li> 91 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> : 92 libxml2 implements a basic FTP client code</li> 93 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> : 94 HTTP/1.0, again a basic HTTP client code</li> 95 <li>SAX: a SAX2 like interface and a minimal SAX1 implementation compatible 96 with early expat versions</li> 97 </ul> 98 99 <p>A partial implementation of <a 100 href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part 101 1: Structure</a> is being worked on but it would be far too early to make any 102 conformance statement about it at the moment.</p> 103 104 <p>Separate documents:</p> 105 <ul> 106 <li><a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an 107 implementation of XSLT 1.0 and common extensions like EXSLT for 108 libxml2</li> 109 <li><a href="http://gdome2.cs.unibo.it/">the gdome2 page</a> 110 : a standard DOM2 implementation for libxml2</li> 111 <li><a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an 112 implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML 113 Digital Signature</a> for libxml2</li> 114 <li>also check the related links section for more related and active 115 projects.</li> 116 </ul> 117 <p> Hosting sponsored by <a href="http://www.aoemedia.de/opensource-cms.html" 118 >Open Source CMS services</a> from AOE media.</p> 119 120 <p>Logo designed by <a href="mailto:liyanage@access.ch">Marc Liyanage</a>.</p> 121 122 <h2><a name="Introducti">Introduction</a></h2> 123 124 <p>This document describes libxml, the <a 125 href="http://www.w3.org/XML/">XML</a> C parser and toolkit developed for the 126 <a href="http://www.gnome.org/">Gnome</a> project. <a 127 href="http://www.w3.org/XML/">XML is a standard</a> for building tag-based 128 structured documents/data.</p> 129 130 <p>Here are some key points about libxml:</p> 131 <ul> 132 <li>Libxml2 exports Push (progressive) and Pull (blocking) type parser 133 interfaces for both XML and HTML.</li> 134 <li>Libxml2 can do DTD validation at parse time, using a parsed document 135 instance, or with an arbitrary DTD.</li> 136 <li>Libxml2 includes complete <a 137 href="http://www.w3.org/TR/xpath">XPath</a>, <a 138 href="http://www.w3.org/TR/xptr">XPointer</a> and <a 139 href="http://www.w3.org/TR/xinclude">XInclude</a> implementations.</li> 140 <li>It is written in plain C, making as few assumptions as possible, and 141 sticking closely to ANSI C/POSIX for easy embedding. Works on 142 Linux/Unix/Windows, ported to a number of other platforms.</li> 143 <li>Basic support for HTTP and FTP client allowing applications to fetch 144 remote resources.</li> 145 <li>The design is modular, most of the extensions can be compiled out.</li> 146 <li>The internal document representation is as close as possible to the <a 147 href="http://www.w3.org/DOM/">DOM</a> interfaces.</li> 148 <li>Libxml2 also has a <a 149 href="http://www.megginson.com/SAX/index.html">SAX like interface</a>; 150 the interface is designed to be compatible with <a 151 href="http://www.jclark.com/xml/expat.html">Expat</a>.</li> 152 <li>This library is released under the <a 153 href="http://www.opensource.org/licenses/mit-license.html">MIT 154 License</a>. See the Copyright file in the distribution for the precise 155 wording.</li> 156 </ul> 157 158 <p>Warning: unless you are forced to because your application links with a 159 Gnome-1.X library requiring it, <strong><span 160 style="background-color: #FF0000">Do Not Use libxml1</span></strong>, use 161 libxml2</p> 162 163 <h2><a name="FAQ">FAQ</a></h2> 164 165 <p>Table of Contents:</p> 166 <ul> 167 <li><a href="FAQ.html#License">License(s)</a></li> 168 <li><a href="FAQ.html#Installati">Installation</a></li> 169 <li><a href="FAQ.html#Compilatio">Compilation</a></li> 170 <li><a href="FAQ.html#Developer">Developer corner</a></li> 171 </ul> 172 173 <h3><a name="License">License</a>(s)</h3> 174 <ol> 175 <li><em>Licensing Terms for libxml</em> 176 <p>libxml2 is released under the <a 177 href="http://www.opensource.org/licenses/mit-license.html">MIT 178 License</a>; see the file Copyright in the distribution for the precise 179 wording</p> 180 </li> 181 <li><em>Can I embed libxml2 in a proprietary application ?</em> 182 <p>Yes. The MIT License allows you to keep proprietary the changes you 183 made to libxml, but it would be graceful to send-back bug fixes and 184 improvements as patches for possible incorporation in the main 185 development tree.</p> 186 </li> 187 </ol> 188 189 <h3><a name="Installati">Installation</a></h3> 190 <ol> 191 <li><strong><span style="background-color: #FF0000">Do Not Use 192 libxml1</span></strong>, use libxml2</li> 193 <p></p> 194 <li><em>Where can I get libxml</em> ? 195 <p>The original distribution comes from <a 196 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> or <a 197 href="ftp://ftp.gnome.org/pub/GNOME/sources/libxml2/2.6/">gnome.org</a></p> 198 <p>Most Linux and BSD distributions include libxml, this is probably the 199 safer way for end-users to use libxml.</p> 200 <p>David Doolin provides precompiled Windows versions at <a 201 href="http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/ ">http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/</a></p> 202 </li> 203 <p></p> 204 <li><em>I see libxml and libxml2 releases, which one should I install ?</em> 205 <ul> 206 <li>If you are not constrained by backward compatibility issues with 207 existing applications, install libxml2 only</li> 208 <li>If you are not doing development, you can safely install both. 209 Usually the packages <a 210 href="http://rpmfind.net/linux/RPM/libxml.html">libxml</a> and <a 211 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml2</a> are 212 compatible (this is not the case for development packages).</li> 213 <li>If you are a developer and your system provides separate packaging 214 for shared libraries and the development components, it is possible 215 to install libxml and libxml2, and also <a 216 href="http://rpmfind.net/linux/RPM/libxml-devel.html">libxml-devel</a> 217 and <a 218 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml2-devel</a> 219 too for libxml2 >= 2.3.0</li> 220 <li>If you are developing a new application, please develop against 221 libxml2(-devel)</li> 222 </ul> 223 </li> 224 <li><em>I can't install the libxml package, it conflicts with libxml0</em> 225 <p>You probably have an old libxml0 package used to provide the shared 226 library for libxml.so.0, you can probably safely remove it. The libxml 227 packages provided on <a 228 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> provide 229 libxml.so.0</p> 230 </li> 231 <li><em>I can't install the libxml(2) RPM package due to failed 232 dependencies</em> 233 <p>The most generic solution is to re-fetch the latest src.rpm , and 234 rebuild it locally with</p> 235 <p><code>rpm --rebuild libxml(2)-xxx.src.rpm</code>.</p> 236 <p>If everything goes well it will generate two binary rpm packages (one 237 providing the shared libs and xmllint, and the other one, the -devel 238 package, providing includes, static libraries and scripts needed to build 239 applications with libxml(2)) that you can install locally.</p> 240 </li> 241 </ol> 242 243 <h3><a name="Compilatio">Compilation</a></h3> 244 <ol> 245 <li><em>What is the process to compile libxml2 ?</em> 246 <p>As most UNIX libraries libxml2 follows the "standard":</p> 247 <p><code>gunzip -c xxx.tar.gz | tar xvf -</code></p> 248 <p><code>cd libxml-xxxx</code></p> 249 <p><code>./configure --help</code></p> 250 <p>to see the options, then the compilation/installation proper</p> 251 <p><code>./configure [possible options]</code></p> 252 <p><code>make</code></p> 253 <p><code>make install</code></p> 254 <p>At that point you may have to rerun ldconfig or a similar utility to 255 update your list of installed shared libs.</p> 256 </li> 257 <li><em>What other libraries are needed to compile/install libxml2 ?</em> 258 <p>Libxml2 does not require any other library, the normal C ANSI API 259 should be sufficient (please report any violation to this rule you may 260 find).</p> 261 <p>However if found at configuration time libxml2 will detect and use the 262 following libs:</p> 263 <ul> 264 <li><a href="http://www.info-zip.org/pub/infozip/zlib/">libz</a> : a 265 highly portable and available widely compression library.</li> 266 <li>iconv: a powerful character encoding conversion library. It is 267 included by default in recent glibc libraries, so it doesn't need to 268 be installed specifically on Linux. It now seems a <a 269 href="http://www.opennc.org/onlinepubs/7908799/xsh/iconv.html">part 270 of the official UNIX</a> specification. Here is one <a 271 href="http://www.gnu.org/software/libiconv/">implementation of the 272 library</a> which source can be found <a 273 href="ftp://ftp.ilog.fr/pub/Users/haible/gnu/">here</a>.</li> 274 </ul> 275 </li> 276 <p></p> 277 <li><em>Make check fails on some platforms</em> 278 <p>Sometimes the regression tests' results don't completely match the 279 value produced by the parser, and the makefile uses diff to print the 280 delta. On some platforms the diff return breaks the compilation process; 281 if the diff is small this is probably not a serious problem.</p> 282 <p>Sometimes (especially on Solaris) make checks fail due to limitations 283 in make. Try using GNU-make instead.</p> 284 </li> 285 <li><em>I use the SVN version and there is no configure script</em> 286 <p>The configure script (and other Makefiles) are generated. Use the 287 autogen.sh script to regenerate the configure script and Makefiles, 288 like:</p> 289 <p><code>./autogen.sh --prefix=/usr --disable-shared</code></p> 290 </li> 291 <li><em>I have troubles when running make tests with gcc-3.0</em> 292 <p>It seems the initial release of gcc-3.0 has a problem with the 293 optimizer which miscompiles the URI module. Please use another 294 compiler.</p> 295 </li> 296 </ol> 297 298 <h3><a name="Developer">Developer</a> corner</h3> 299 <ol> 300 <li><em>Troubles compiling or linking programs using libxml2</em> 301 <p>Usually the problem comes from the fact that the compiler doesn't get 302 the right compilation or linking flags. There is a small shell script 303 <code>xml2-config</code> which is installed as part of libxml2 usual 304 install process which provides those flags. Use</p> 305 <p><code>xml2-config --cflags</code></p> 306 <p>to get the compilation flags and</p> 307 <p><code>xml2-config --libs</code></p> 308 <p>to get the linker flags. Usually this is done directly from the 309 Makefile as:</p> 310 <p><code>CFLAGS=`xml2-config --cflags`</code></p> 311 <p><code>LIBS=`xml2-config --libs`</code></p> 312 </li> 313 <li><em>I want to install my own copy of libxml2 in my home directory and 314 link my programs against it, but it doesn't work</em> 315 <p>There are many different ways to accomplish this. Here is one way to 316 do this under Linux. Suppose your home directory is <code>/home/user. 317 </code>Then:</p> 318 <ul> 319 <li>Create a subdirectory, let's call it <code>myxml</code></li> 320 <li>unpack the libxml2 distribution into that subdirectory</li> 321 <li>chdir into the unpacked distribution 322 (<code>/home/user/myxml/libxml2 </code>)</li> 323 <li>configure the library using the "<code>--prefix</code>" switch, 324 specifying an installation subdirectory in 325 <code>/home/user/myxml</code>, e.g. 326 <p><code>./configure --prefix /home/user/myxml/xmlinst</code> {other 327 configuration options}</p> 328 </li> 329 <li>now run <code>make</code> followed by <code>make install</code></li> 330 <li>At this point, the installation subdirectory contains the complete 331 "private" include files, library files and binary program files (e.g. 332 xmllint), located in 333 <p><code>/home/user/myxml/xmlinst/lib, 334 /home/user/myxml/xmlinst/include </code> and <code> 335 /home/user/myxml/xmlinst/bin</code></p> 336 respectively.</li> 337 <li>In order to use this "private" library, you should first add it to 338 the beginning of your default PATH (so that your own private program 339 files such as xmllint will be used instead of the normal system 340 ones). To do this, the Bash command would be 341 <p><code>export PATH=/home/user/myxml/xmlinst/bin:$PATH</code></p> 342 </li> 343 <li>Now suppose you have a program <code>test1.c</code> that you would 344 like to compile with your "private" library. Simply compile it using 345 the command 346 <p><code>gcc `xml2-config --cflags --libs` -o test test.c</code></p> 347 Note that, because your PATH has been set with <code> 348 /home/user/myxml/xmlinst/bin</code> at the beginning, the xml2-config 349 program which you just installed will be used instead of the system 350 default one, and this will <em>automatically</em> get the correct 351 libraries linked with your program.</li> 352 </ul> 353 </li> 354 355 <p></p> 356 <li><em>xmlDocDump() generates output on one line.</em> 357 <p>Libxml2 will not <strong>invent</strong> spaces in the content of a 358 document since <strong>all spaces in the content of a document are 359 significant</strong>. If you build a tree from the API and want 360 indentation:</p> 361 <ol> 362 <li>the correct way is to generate those yourself too.</li> 363 <li>the dangerous way is to ask libxml2 to add those blanks to your 364 content <strong>modifying the content of your document in the 365 process</strong>. The result may not be what you expect. There is 366 <strong>NO</strong> way to guarantee that such a modification won't 367 affect other parts of the content of your document. See <a 368 href="http://xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault">xmlKeepBlanksDefault 369 ()</a> and <a 370 href="http://xmlsoft.org/html/libxml-tree.html#xmlSaveFormatFile">xmlSaveFormatFile 371 ()</a></li> 372 </ol> 373 </li> 374 <p></p> 375 <li><em>Extra nodes in the document:</em> 376 <p><em>For an XML file as below:</em></p> 377 <pre><?xml version="1.0"?> 378 <PLAN xmlns="http://www.argus.ca/autotest/1.0/"> 379 <NODE CommFlag="0"/> 380 <NODE CommFlag="1"/> 381 </PLAN></pre> 382 <p><em>after parsing it with the function 383 pxmlDoc=xmlParseFile(...);</em></p> 384 <p><em>I want to the get the content of the first node (node with the 385 CommFlag="0")</em></p> 386 <p><em>so I did it as following;</em></p> 387 <pre>xmlNodePtr pnode; 388 pnode=pxmlDoc->children->children;</pre> 389 <p><em>but it does not work. If I change it to</em></p> 390 <pre>pnode=pxmlDoc->children->children->next;</pre> 391 <p><em>then it works. Can someone explain it to me.</em></p> 392 <p></p> 393 <p>In XML all characters in the content of the document are significant 394 <strong>including blanks and formatting line breaks</strong>.</p> 395 <p>The extra nodes you are wondering about are just that, text nodes with 396 the formatting spaces which are part of the document but that people tend 397 to forget. There is a function <a 398 href="http://xmlsoft.org/html/libxml-parser.html">xmlKeepBlanksDefault 399 ()</a> to remove those at parse time, but that's an heuristic, and its 400 use should be limited to cases where you are certain there is no 401 mixed-content in the document.</p> 402 </li> 403 <li><em>I get compilation errors of existing code like when accessing 404 <strong>root</strong> or <strong>child fields</strong> of nodes.</em> 405 <p>You are compiling code developed for libxml version 1 and using a 406 libxml2 development environment. Either switch back to libxml v1 devel or 407 even better fix the code to compile with libxml2 (or both) by <a 408 href="upgrade.html">following the instructions</a>.</p> 409 </li> 410 <li><em>I get compilation errors about non existing 411 <strong>xmlRootNode</strong> or <strong>xmlChildrenNode</strong> 412 fields.</em> 413 <p>The source code you are using has been <a 414 href="upgrade.html">upgraded</a> to be able to compile with both libxml 415 and libxml2, but you need to install a more recent version: 416 libxml(-devel) >= 1.8.8 or libxml2(-devel) >= 2.1.0</p> 417 </li> 418 <li><em>Random crashes in threaded applications</em> 419 <p>Read and follow all advices on the <a href="threads.html">thread 420 safety</a> page, and make 100% sure you never call xmlCleanupParser() 421 while the library or an XML document might still be in use by another 422 thread.</p> 423 </li> 424 <li><em>The example provided in the web page does not compile.</em> 425 <p>It's hard to maintain the documentation in sync with the code 426 <grin/> ...</p> 427 <p>Check the previous points 1/ and 2/ raised before, and please send 428 patches.</p> 429 </li> 430 <li><em>Where can I get more examples and information than provided on the 431 web page?</em> 432 <p>Ideally a libxml2 book would be nice. I have no such plan ... But you 433 can:</p> 434 <ul> 435 <li>check more deeply the <a href="html/libxml-lib.html">existing 436 generated doc</a></li> 437 <li>have a look at <a href="examples/index.html">the set of 438 examples</a>.</li> 439 <li>look for examples of use for libxml2 function using the Gnome code 440 or by asking on Google.</li> 441 <li><a 442 href="http://svn.gnome.org/viewvc/libxml2/trunk/">Browse 443 the libxml2 source</a> , I try to write code as clean and documented 444 as possible, so looking at it may be helpful. In particular the code 445 of <a href="http://svn.gnome.org/viewvc/libxml2/trunk/xmllint.c?view=markup">xmllint.c</a> and of the various testXXX.c test programs should 446 provide good examples of how to do things with the library.</li> 447 </ul> 448 </li> 449 <p></p> 450 <li><em>What about C++ ?</em> 451 <p>libxml2 is written in pure C in order to allow easy reuse on a number 452 of platforms, including embedded systems. I don't intend to convert to 453 C++.</p> 454 <p>There is however a C++ wrapper which may fulfill your needs:</p> 455 <ul> 456 <li>by Ari Johnson <ari@btigate.com>: 457 <p>Website: <a 458 href="http://libxmlplusplus.sourceforge.net/">http://libxmlplusplus.sourceforge.net/</a></p> 459 <p>Download: <a 460 href="http://sourceforge.net/project/showfiles.php?group_id=12999">http://sourceforge.net/project/showfiles.php?group_id=12999</a></p> 461 </li> 462 </ul> 463 </li> 464 <li><em>How to validate a document a posteriori ?</em> 465 <p>It is possible to validate documents which had not been validated at 466 initial parsing time or documents which have been built from scratch 467 using the API. Use the <a 468 href="http://xmlsoft.org/html/libxml-valid.html#xmlValidateDtd">xmlValidateDtd()</a> 469 function. It is also possible to simply add a DTD to an existing 470 document:</p> 471 <pre>xmlDocPtr doc; /* your existing document */ 472 xmlDtdPtr dtd = xmlParseDTD(NULL, filename_of_dtd); /* parse the DTD */ 473 474 dtd->name = xmlStrDup((xmlChar*)"root_name"); /* use the given root */ 475 476 doc->intSubset = dtd; 477 if (doc->children == NULL) xmlAddChild((xmlNodePtr)doc, (xmlNodePtr)dtd); 478 else xmlAddPrevSibling(doc->children, (xmlNodePtr)dtd); 479 </pre> 480 </li> 481 <li><em>So what is this funky "xmlChar" used all the time?</em> 482 <p>It is a null terminated sequence of utf-8 characters. And only utf-8! 483 You need to convert strings encoded in different ways to utf-8 before 484 passing them to the API. This can be accomplished with the iconv library 485 for instance.</p> 486 </li> 487 <li>etc ...</li> 488 </ol> 489 490 <p></p> 491 492 <h2><a name="Documentat">Developer Menu</a></h2> 493 494 <p>There are several on-line resources related to using libxml:</p> 495 <ol> 496 <li>Use the <a href="search.php">search engine</a> to look up 497 information.</li> 498 <li>Check the <a href="FAQ.html">FAQ.</a></li> 499 <li>Check the <a href="http://xmlsoft.org/html/libxml-lib.html">extensive 500 documentation</a> automatically extracted from code comments.</li> 501 <li>Look at the documentation about <a href="encoding.html">libxml 502 internationalization support</a>.</li> 503 <li>This page provides a global overview and <a href="example.html">some 504 examples</a> on how to use libxml.</li> 505 <li><a href="examples/index.html">Code examples</a></li> 506 <li>John Fleck's libxml2 tutorial: <a href="tutorial/index.html">html</a> 507 or <a href="tutorial/xmltutorial.pdf">pdf</a>.</li> 508 <li>If you need to parse large files, check the <a 509 href="xmlreader.html">xmlReader</a> API tutorial</li> 510 <li><a href="mailto:james@daa.com.au">James Henstridge</a> wrote <a 511 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">some nice 512 documentation</a> explaining how to use the libxml SAX interface.</li> 513 <li>George Lebl wrote <a 514 href="http://www-106.ibm.com/developerworks/library/l-gnome3/">an article 515 for IBM developerWorks</a> about using libxml.</li> 516 <li>Check <a href="http://svn.gnome.org/viewvc/libxml2/trunk/TODO?view=markup">the TODO 517 file</a>.</li> 518 <li>Read the <a href="upgrade.html">1.x to 2.x upgrade path</a> 519 description. If you are starting a new project using libxml you should 520 really use the 2.x version.</li> 521 <li>And don't forget to look at the <a 522 href="http://mail.gnome.org/archives/xml/">mailing-list archive</a>.</li> 523 </ol> 524 525 <h2><a name="Reporting">Reporting bugs and getting help</a></h2> 526 527 <p>Well, bugs or missing features are always possible, and I will make a 528 point of fixing them in a timely fashion. The best way to report a bug is to 529 use the <a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome 530 bug tracking database</a> (make sure to use the "libxml2" module name). I 531 look at reports there regularly and it's good to have a reminder when a bug 532 is still open. Be sure to specify that the bug is for the package libxml2.</p> 533 534 <p>For small problems you can try to get help on IRC, the #xml channel on 535 irc.gnome.org (port 6667) usually has a few people subscribed which may help 536 (but there is no guarantee and if a real issue is raised it should go on the 537 mailing-list for archival).</p> 538 539 <p>There is also a mailing-list <a 540 href="mailto:xml@gnome.org">xml@gnome.org</a> for libxml, with an <a 541 href="http://mail.gnome.org/archives/xml/">on-line archive</a> (<a 542 href="http://xmlsoft.org/messages">old</a>). To subscribe to this list, 543 please visit the <a 544 href="http://mail.gnome.org/mailman/listinfo/xml">associated Web</a> page and 545 follow the instructions. <strong>Do not send code, I won't debug it</strong> 546 (but patches are really appreciated!).</p> 547 548 <p>Please note that with the current amount of virus and SPAM, sending mail 549 to the list without being subscribed won't work. There is *far too many 550 bounces* (in the order of a thousand a day !) I cannot approve them manually 551 anymore. If your mail to the list bounced waiting for administrator approval, 552 it is LOST ! Repost it and fix the problem triggering the error. Also please 553 note that <span style="color: #FF0000; background-color: #FFFFFF">emails with 554 a legal warning asking to not copy or redistribute freely the information 555 they contain</span> are <strong>NOT</strong> acceptable for the mailing-list, 556 such mail will as much as possible be discarded automatically, and are less 557 likely to be answered if they made it to the list, <strong>DO NOT</strong> 558 post to the list from an email address where such legal requirements are 559 automatically added, get private paying support if you can't share 560 information.</p> 561 562 <p>Check the following <strong><span style="color: #FF0000">before 563 posting</span></strong>:</p> 564 <ul> 565 <li>Read the <a href="FAQ.html">FAQ</a> and <a href="search.php">use the 566 search engine</a> to get information related to your problem.</li> 567 <li>Make sure you are <a href="ftp://xmlsoft.org/libxml2/">using a recent 568 version</a>, and that the problem still shows up in a recent version.</li> 569 <li>Check the <a href="http://mail.gnome.org/archives/xml/">list 570 archives</a> to see if the problem was reported already. In this case 571 there is probably a fix available, similarly check the <a 572 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">registered 573 open bugs</a>.</li> 574 <li>Make sure you can reproduce the bug with xmllint or one of the test 575 programs found in source in the distribution.</li> 576 <li>Please send the command showing the error as well as the input (as an 577 attachment)</li> 578 </ul> 579 580 <p>Then send the bug with associated information to reproduce it to the <a 581 href="mailto:xml@gnome.org">xml@gnome.org</a> list; if it's really libxml 582 related I will approve it. Please do not send mail to me directly, it makes 583 things really hard to track and in some cases I am not the best person to 584 answer a given question, ask on the list.</p> 585 586 <p>To <span style="color: #E50000">be really clear about support</span>:</p> 587 <ul> 588 <li>Support or help <span style="color: #E50000">requests MUST be sent to 589 the list or on bugzilla</span> in case of problems, so that the Question 590 and Answers can be shared publicly. Failing to do so carries the implicit 591 message "I want free support but I don't want to share the benefits with 592 others" and is not welcome. I will automatically Carbon-Copy the 593 xml@gnome.org mailing list for any technical reply made about libxml2 or 594 libxslt.</li> 595 <li>There is <span style="color: #E50000">no guarantee of support</span>. If 596 your question remains unanswered after a week, repost it, making sure you 597 gave all the detail needed and the information requested.</li> 598 <li>Failing to provide information as requested or double checking first 599 for prior feedback also carries the implicit message "the time of the 600 library maintainers is less valuable than my time" and might not be 601 welcome.</li> 602 </ul> 603 604 <p>Of course, bugs reported with a suggested patch for fixing them will 605 probably be processed faster than those without.</p> 606 607 <p>If you're looking for help, a quick look at <a 608 href="http://mail.gnome.org/archives/xml/">the list archive</a> may actually 609 provide the answer. I usually send source samples when answering libxml2 610 usage questions. The <a 611 href="http://xmlsoft.org/html/book1.html">auto-generated documentation</a> is 612 not as polished as I would like (i need to learn more about DocBook), but 613 it's a good starting point.</p> 614 615 <h2><a name="help">How to help</a></h2> 616 617 <p>You can help the project in various ways, the best thing to do first is to 618 subscribe to the mailing-list as explained before, check the <a 619 href="http://mail.gnome.org/archives/xml/">archives </a>and the <a 620 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome bug 621 database</a>:</p> 622 <ol> 623 <li>Provide patches when you find problems.</li> 624 <li>Provide the diffs when you port libxml2 to a new platform. They may not 625 be integrated in all cases but help pinpointing portability problems 626 and</li> 627 <li>Provide documentation fixes (either as patches to the code comments or 628 as HTML diffs).</li> 629 <li>Provide new documentations pieces (translations, examples, etc 630 ...).</li> 631 <li>Check the TODO file and try to close one of the items.</li> 632 <li>Take one of the points raised in the archive or the bug database and 633 provide a fix. <a href="mailto:daniel@veillard.com">Get in touch with me 634 </a>before to avoid synchronization problems and check that the suggested 635 fix will fit in nicely :-)</li> 636 </ol> 637 638 <h2><a name="Downloads">Downloads</a></h2> 639 640 <p>The latest versions of libxml2 can be found on the <a 641 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> server ( <a 642 href="ftp://xmlsoft.org/libxml2/">FTP</a> and rsync are available), there are also 643 mirrors (<a href="ftp://fr.rpmfind.net/pub/libxml/">France</a> and 644 Antonin Sprinzl also provide <a href="ftp://gd.tuwien.ac.at/pub/libxml/">a 645 mirror in Austria</a>). (NOTE that you need both the <a 646 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml(2)</a> and <a 647 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml(2)-devel</a> 648 packages installed to compile applications using libxml if using RPMs.)</p> 649 650 <p>You can find all the history of libxml(2) and libxslt releases in the <a 651 href="http://xmlsoft.org/sources/old/">old</a> directory. The precompiled 652 Windows binaries made by Igor Zlatovic are available in the <a 653 href="http://xmlsoft.org/sources/win32/">win32</a> directory.</p> 654 655 <p>Binary ports:</p> 656 <ul> 657 <li>RPMs for x86_64 are available directly on <a 658 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a>, the source RPM will compile on 659 any architecture supported.</li> 660 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the 661 maintainer of the Windows port, <a 662 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 663 binaries</a>.</li> 664 <li>OpenCSW provides <a 665 href="http://opencsw.org/packages/libxml2">Solaris 666 binaries</a>.</li> 667 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> provides <a 668 href="http://www.explain.com.au/oss/libxml2xslt.html">Mac Os X 669 binaries</a>.</li> 670 <li>The HP-UX porting center provides <a 671 href="http://hpux.connect.org.uk/hppd/hpux/Gnome/">HP-UX binaries</a></li> 672 <li>Bull provides precompiled <a 673 href="http://gnome.bullfreeware.com/new_index.html">RPMs for AIX</a> as 674 patr of their GNOME packages</li> 675 </ul> 676 677 <p>If you know other supported binary ports, please <a 678 href="http://veillard.com/">contact me</a>.</p> 679 680 <p><a name="Snapshot">Snapshot:</a></p> 681 <ul> 682 <li>Code from the GNOME GIT base libxml2 module, updated hourly <a 683 href="ftp://xmlsoft.org/libxml2/libxml2-git-snapshot.tar.gz">libxml2-git-snapshot.tar.gz</a>.</li> 684 <li>Docs, content of the web site, the list archive included <a 685 href="ftp://xmlsoft.org/libxml2/libxml-docs.tar.gz">libxml-docs.tar.gz</a>.</li> 686 </ul> 687 688 <p><a name="Contribs">Contributions:</a></p> 689 690 <p>I do accept external contributions, especially if compiling on another 691 platform, get in touch with the list to upload the package, wrappers for 692 various languages have been provided, and can be found in the <a 693 href="python.html">bindings section</a></p> 694 695 <p>Libxml2 is also available from GIT:</p> 696 <ul> 697 <li><p>See <a href="http://git.gnome.org/browse/libxml2/">libxml2 Git web</a>. 698 To checkout a local tree use:</p> 699 <pre>git clone git://git.gnome.org/libxml2</pre> 700 </li> 701 <li>The <strong>libxslt</strong> module is also present 702 <a href="http://git.gnome.org/browse/libxslt/">there</a>.</li> 703 </ul> 704 705 <h2><a name="News">Releases</a></h2> 706 707 <p>The <a href="ChangeLog.html">change log</a> describes the recents commits 708 to the <a href="http://git.gnome.org/browse/libxml2/">GIT</a> code base.</p> 709 710 <p>Here is the list of public releases:</p> 711 712 <h3>v2.9.8: Mar 05 2018</h3> 713 <ul> 714 <li>Portability:<br/> 715 python: remove single use of _PyVerify_fd (Patrick Welche),<br/> 716 Build more test executables on Windows/MSVC (Nick Wellnhofer),<br/> 717 Stop including ansidecl.h (Nick Wellnhofer),<br/> 718 Fix libz and liblzma detection (Nick Wellnhofer),<br/> 719 Revert "Compile testapi with -Wno-unused-function" (Nick Wellnhofer)<br/> 720 </li> 721 722 <li>Bug Fixes:<br/> 723 Fix xmlParserEntityCheck (Nick Wellnhofer),<br/> 724 Halt parser in case of encoding error (Nick Wellnhofer),<br/> 725 Clear entity content in case of errors (Nick Wellnhofer),<br/> 726 Change calls to xmlCharEncInput to set flush false when not final call. Having flush incorrectly set to true causes errors for ICU. (Joel Hockey),<br/> 727 Fix buffer over-read in xmlParseNCNameComplex (Nick Wellnhofer),<br/> 728 Fix ICU library filenames on Windows/MSVC (Nick Wellnhofer),<br/> 729 Fix xmlXPathIsNaN broken by recent commit (Nick Wellnhofer),<br/> 730 Fix -Wenum-compare warnings (Nick Wellnhofer),<br/> 731 Fix callback signature in testapi.c (Nick Wellnhofer),<br/> 732 Fix unused parameter warning without ICU (Nick Wellnhofer),<br/> 733 Fix IO callback signatures (Nick Wellnhofer),<br/> 734 Fix misc callback signatures (Nick Wellnhofer),<br/> 735 Fix list callback signatures (Nick Wellnhofer),<br/> 736 Fix hash callback signatures (Nick Wellnhofer),<br/> 737 Refactor name and type signature for xmlNop (Vlad Tsyrklevich),<br/> 738 Fixed ICU to set flush correctly and provide pivot buffer. (Joel Hockey),<br/> 739 Skip EBCDIC tests if EBCDIC isn't supported (Nick Wellnhofer)<br/> 740 </li> 741 742 <li>Improvements:<br/> 743 Disable pointer-overflow UBSan checks under Travis (Nick Wellnhofer),<br/> 744 Improve handling of context input_id (Daniel Veillard),<br/> 745 Add resource file to Windows DLL (ccpaging),<br/> 746 Run Travis tests with -Werror (Nick Wellnhofer),<br/> 747 Build with "-Wall -Wextra" (Nick Wellnhofer),<br/> 748 Fix -Wtautological-pointer-compare warnings (Nick Wellnhofer),<br/> 749 Remove unused AC_CHECKs (Nick Wellnhofer),<br/> 750 Update information about contributing (Nick Wellnhofer),<br/> 751 Fix -Wmisleading-indentation warnings (Nick Wellnhofer),<br/> 752 Don't touch CFLAGS in configure.ac (Nick Wellnhofer),<br/> 753 Ignore function pointer cast warnings (Nick Wellnhofer),<br/> 754 Simplify XPath NaN, inf and -0 handling (Nick Wellnhofer),<br/> 755 Introduce xmlPosixStrdup and update xmlMemStrdup (Nick Wellnhofer),<br/> 756 Add test for ICU flush and pivot buffer (Nick Wellnhofer),<br/> 757 Compile testapi with -Wno-unused-function (Nick Wellnhofer)<br/> 758 </li> 759 </ul> 760 <h3>2.9.7: Nov 02 2017</h3> 761 <ul> 762 <li>Documentation:<br/> 763 xmlcatalog: refresh man page wrt. quering system catalog easily (Jan Pokorný)<br/> 764 </li> 765 766 <li>Portability:<br/> 767 Fix deprecated Travis compiler flag (Nick Wellnhofer),<br/> 768 Add declaration for DllMain (J. Peter Mugaas),<br/> 769 Fix preprocessor conditional in threads.h (J. Peter Mugaas),<br/> 770 Fix pointer comparison warnings on 64-bit Windows (J. Peter Mugaas),<br/> 771 Fix macro redefinition warning (J. Peter Mugaas),<br/> 772 Default to native threads on MinGW-w64 (Nick Wellnhofer),<br/> 773 Simplify Windows IO functions (Nick Wellnhofer),<br/> 774 Fix runtest on Windows (Nick Wellnhofer),<br/> 775 socklen_t is always int on Windows (Nick Wellnhofer),<br/> 776 Don't redefine socket error codes on Windows (Nick Wellnhofer),<br/> 777 Fix pointer/int cast warnings on 64-bit Windows (Nick Wellnhofer),<br/> 778 Fix Windows compiler warnings in xmlCanonicPath (Nick Wellnhofer)<br/> 779 </li> 780 781 <li>Bug Fixes:<br/> 782 xmlcatalog: restore ability to query system catalog easily (Jan Pokorný),<br/> 783 Fix comparison of nodesets to strings (Nick Wellnhofer)<br/> 784 </li> 785 786 <li>Improvements:<br/> 787 Add Makefile rules to rebuild HTML man pages (Nick Wellnhofer),<br/> 788 Fix mixed decls and code in timsort.h (Nick Wellnhofer),<br/> 789 Rework handling of return values in thread tests (Nick Wellnhofer),<br/> 790 Fix unused variable warnings in testrecurse (Nick Wellnhofer),<br/> 791 Fix -Wimplicit-fallthrough warnings (J. Peter Mugaas),<br/> 792 Upgrade timsort.h to latest revision (Nick Wellnhofer),<br/> 793 Increase warning level to /W3 under MSVC (Nick Wellnhofer),<br/> 794 Fix a couple of warnings in dict.c and threads.c (Nick Wellnhofer),<br/> 795 Update .gitignore for Windows (Nick Wellnhofer),<br/> 796 Fix unused variable warnings in nanohttp.c (Nick Wellnhofer),<br/> 797 Fix the Windows header mess (Nick Wellnhofer),<br/> 798 Don't include winsock2.h in xmllint.c (Nick Wellnhofer),<br/> 799 Remove generated file python/setup.py from version control (Nick Wellnhofer),<br/> 800 Use __linux__ macro in generated code (Nick Wellnhofer)<br/> 801 </li> 802 803 </ul> 804 <h3>v2.9.6: Oct 06 2017</h3> 805 <ul> 806 <li>Portability:<br/> 807 Change preprocessor OS tests to __linux__ (Nick Wellnhofer)<br/> 808 </li> 809 810 <li>Bug Fixes:<br/> 811 Fix XPath stack frame logic (Nick Wellnhofer),<br/> 812 Report undefined XPath variable error message (Nick Wellnhofer),<br/> 813 Fix regression with librsvg (Nick Wellnhofer),<br/> 814 Handle more invalid entity values in recovery mode (Nick Wellnhofer),<br/> 815 Fix structured validation errors (Nick Wellnhofer),<br/> 816 Fix memory leak in LZMA decompressor (Nick Wellnhofer),<br/> 817 Set memory limit for LZMA decompression (Nick Wellnhofer),<br/> 818 Handle illegal entity values in recovery mode (Nick Wellnhofer),<br/> 819 Fix debug dump of streaming XPath expressions (Nick Wellnhofer),<br/> 820 Fix memory leak in nanoftp (Nick Wellnhofer),<br/> 821 Fix memory leaks in SAX1 parser (Nick Wellnhofer)<br/> 822 </li> 823 </ul> 824 <h3>v2.9.5: Sep 04 2017</h3> 825 <ul> 826 827 <li>Security:<br/> 828 Detect infinite recursion in parameter entities (Nick Wellnhofer),<br/> 829 Fix handling of parameter-entity references (Nick Wellnhofer),<br/> 830 Disallow namespace nodes in XPointer ranges (Nick Wellnhofer),<br/> 831 Fix XPointer paths beginning with range-to (Nick Wellnhofer)<br/> 832 </li> 833 834 <li>Documentation:<br/> 835 Documentation fixes (Nick Wellnhofer),<br/> 836 Spelling and grammar fixes (Nick Wellnhofer)<br/> 837 </li> 838 839 <li>Portability:<br/> 840 Adding README.zOS to list of extra files for the release (Daniel Veillard),<br/> 841 Description of work needed to compile on zOS (Stéphane Michaut),<br/> 842 Porting libxml2 on zOS encoding of code (Stéphane Michaut),<br/> 843 small changes for OS/400 (Patrick Monnerat),<br/> 844 relaxng.c, xmlschemas.c: Fix build on pre-C99 compilers (Chun-wei Fan)<br/> 845 </li> 846 847 <li>Bug Fixes:<br/> 848 Problem resolving relative URIs (Daniel Veillard),<br/> 849 Fix unwanted warnings when switching encodings (Nick Wellnhofer),<br/> 850 Fix signature of xmlSchemaAugmentImportedIDC (Daniel Veillard),<br/> 851 Heap-buffer-overflow read of size 1 in xmlFAParsePosCharGroup (David Kilzer),<br/> 852 Fix NULL pointer deref in xmlFAParseCharClassEsc (Nick Wellnhofer),<br/> 853 Fix infinite loops with push parser in recovery mode (Nick Wellnhofer),<br/> 854 Send xmllint usage error to stderr (Nick Wellnhofer),<br/> 855 Fix NULL deref in xmlParseExternalEntityPrivate (Nick Wellnhofer),<br/> 856 Make sure not to call IS_BLANK_CH when parsing the DTD (Nick Wellnhofer),<br/> 857 Fix xmlHaltParser (Nick Wellnhofer),<br/> 858 Fix pathological performance when outputting charrefs (Nick Wellnhofer),<br/> 859 Fix invalid-source-encoding warnings in testWriter.c (Nick Wellnhofer),<br/> 860 Fix duplicate SAX callbacks for entity content (David Kilzer),<br/> 861 Treat URIs with scheme as absolute in C14N (Nick Wellnhofer),<br/> 862 Fix copy-paste errors in error messages (Nick Wellnhofer),<br/> 863 Fix sanity check in htmlParseNameComplex (Nick Wellnhofer),<br/> 864 Fix potential infinite loop in xmlStringLenDecodeEntities (Nick Wellnhofer),<br/> 865 Reset parser input pointers on encoding failure (Nick Wellnhofer),<br/> 866 Fix memory leak in xmlParseEntityDecl error path (Nick Wellnhofer),<br/> 867 Fix xmlBuildRelativeURI for URIs starting with './' (Nick Wellnhofer),<br/> 868 Fix type confusion in xmlValidateOneNamespace (Nick Wellnhofer),<br/> 869 Fix memory leak in xmlStringLenGetNodeList (Nick Wellnhofer),<br/> 870 Fix NULL pointer deref in xmlDumpElementContent (Daniel Veillard),<br/> 871 Fix memory leak in xmlBufAttrSerializeTxtContent (Nick Wellnhofer),<br/> 872 Stop parser on unsupported encodings (Nick Wellnhofer),<br/> 873 Check for integer overflow in memory debug code (Nick Wellnhofer),<br/> 874 Fix buffer size checks in xmlSnprintfElementContent (Nick Wellnhofer),<br/> 875 Avoid reparsing in xmlParseStartTag2 (Nick Wellnhofer),<br/> 876 Fix undefined behavior in xmlRegExecPushStringInternal (Nick Wellnhofer),<br/> 877 Check XPath exponents for overflow (Nick Wellnhofer),<br/> 878 Check for overflow in xmlXPathIsPositionalPredicate (Nick Wellnhofer),<br/> 879 Fix spurious error message (Nick Wellnhofer),<br/> 880 Fix memory leak in xmlCanonicPath (Nick Wellnhofer),<br/> 881 Fix memory leak in xmlXPathCompareNodeSetValue (Nick Wellnhofer),<br/> 882 Fix memory leak in pattern error path (Nick Wellnhofer),<br/> 883 Fix memory leak in parser error path (Nick Wellnhofer),<br/> 884 Fix memory leaks in XPointer error paths (Nick Wellnhofer),<br/> 885 Fix memory leak in xmlXPathNodeSetMergeAndClear (Nick Wellnhofer),<br/> 886 Fix memory leak in XPath filter optimizations (Nick Wellnhofer),<br/> 887 Fix memory leaks in XPath error paths (Nick Wellnhofer),<br/> 888 Do not leak the new CData node if adding fails (David Tardon),<br/> 889 Prevent unwanted external entity reference (Neel Mehta),<br/> 890 Increase buffer space for port in HTTP redirect support (Daniel Veillard),<br/> 891 Fix more NULL pointer derefs in xpointer.c (Nick Wellnhofer),<br/> 892 Avoid function/data pointer conversion in xpath.c (Nick Wellnhofer),<br/> 893 Fix format string warnings (Nick Wellnhofer),<br/> 894 Disallow namespace nodes in XPointer points (Nick Wellnhofer),<br/> 895 Fix comparison with root node in xmlXPathCmpNodes (Nick Wellnhofer),<br/> 896 Fix attribute decoding during XML schema validation (Alex Henrie),<br/> 897 Fix NULL pointer deref in XPointer range-to (Nick Wellnhofer)<br/> 898 </li> 899 900 <li>Improvements:<br/> 901 Updating the spec file to reflect Fedora 24 (Daniel Veillard),<br/> 902 Add const in five places to move 1 KiB to .rdata (Bruce Dawson),<br/> 903 Fix missing part of comment for function xmlXPathEvalExpression() (Daniel Veillard),<br/> 904 Get rid of "blanks wrapper" for parameter entities (Nick Wellnhofer),<br/> 905 Simplify handling of parameter entity references (Nick Wellnhofer),<br/> 906 Deduplicate code in encoding.c (Nick Wellnhofer),<br/> 907 Make HTML parser functions take const pointers (Nick Wellnhofer),<br/> 908 Build test programs only when needed (Nick Wellnhofer),<br/> 909 Fix doc/examples/index.py (Nick Wellnhofer),<br/> 910 Fix compiler warnings in threads.c (Nick Wellnhofer),<br/> 911 Fix empty-body warning in nanohttp.c (Nick Wellnhofer),<br/> 912 Fix cast-align warnings (Nick Wellnhofer),<br/> 913 Fix unused-parameter warnings (Nick Wellnhofer),<br/> 914 Rework entity boundary checks (Nick Wellnhofer),<br/> 915 Don't switch encoding for internal parameter entities (Nick Wellnhofer),<br/> 916 Merge duplicate code paths handling PE references (Nick Wellnhofer),<br/> 917 Test SAX2 callbacks with entity substitution (Nick Wellnhofer),<br/> 918 Support catalog and threads tests under --without-sax1 (Nick Wellnhofer),<br/> 919 Misc fixes for 'make tests' (Nick Wellnhofer),<br/> 920 Initialize keepBlanks in HTML parser (Nick Wellnhofer),<br/> 921 Add test cases for bug 758518 (David Kilzer),<br/> 922 Fix compiler warning in htmlParseElementInternal (Nick Wellnhofer),<br/> 923 Remove useless check in xmlParseAttributeListDecl (Nick Wellnhofer),<br/> 924 Allow zero sized memory input buffers (Nick Wellnhofer),<br/> 925 Add TODO comment in xmlSwitchEncoding (Nick Wellnhofer),<br/> 926 Check for integer overflow in xmlXPathFormatNumber (Nick Wellnhofer),<br/> 927 Make Travis print UBSan stacktraces (Nick Wellnhofer),<br/> 928 Add .travis.yml (Nick Wellnhofer),<br/> 929 Fix expected error output in Python tests (Nick Wellnhofer),<br/> 930 Simplify control flow in xmlParseStartTag2 (Nick Wellnhofer),<br/> 931 Disable LeakSanitizer when running API tests (Nick Wellnhofer),<br/> 932 Avoid out-of-bound array access in API tests (Nick Wellnhofer),<br/> 933 Avoid spurious UBSan errors in parser.c (Nick Wellnhofer),<br/> 934 Parse small XPath numbers more accurately (Nick Wellnhofer),<br/> 935 Rework XPath rounding functions (Nick Wellnhofer),<br/> 936 Fix white space in test output (Nick Wellnhofer),<br/> 937 Fix axis traversal from attribute and namespace nodes (Nick Wellnhofer),<br/> 938 Check for trailing characters in XPath expressions earlier (Nick Wellnhofer),<br/> 939 Rework final handling of XPath results (Nick Wellnhofer),<br/> 940 Make xmlXPathEvalExpression call xmlXPathEval (Nick Wellnhofer),<br/> 941 Remove unused variables (Nick Wellnhofer),<br/> 942 Don't print generic error messages in XPath tests (Nick Wellnhofer)<br/> 943 </li> 944 945 <li>Cleanups:<br/> 946 Fix a couple of misleading indentation errors (Daniel Veillard),<br/> 947 Remove unnecessary calls to xmlPopInput (Nick Wellnhofer)<br/> 948 </li> 949 </ul> 950 <h3>2.9.4: May 23 2016</h3> 951 <ul> 952 <li>Security:<br/> 953 More format string warnings with possible format string vulnerability (David Kilzer),<br/> 954 Avoid building recursive entities (Daniel Veillard),<br/> 955 Heap-based buffer overread in htmlCurrentChar (Pranjal Jumde),<br/> 956 Heap-based buffer-underreads due to xmlParseName (David Kilzer),<br/> 957 Heap use-after-free in xmlSAX2AttributeNs (Pranjal Jumde),<br/> 958 Heap use-after-free in htmlParsePubidLiteral and htmlParseSystemiteral (Pranjal Jumde),<br/> 959 Fix some format string warnings with possible format string vulnerability (David Kilzer),<br/> 960 Detect change of encoding when parsing HTML names (Hugh Davenport),<br/> 961 Fix inappropriate fetch of entities content (Daniel Veillard),<br/> 962 Bug 759398: Heap use-after-free in xmlDictComputeFastKey <https://bugzilla.gnome.org/show_bug.cgi?id=759398> (Pranjal Jumde),<br/> 963 Bug 758605: Heap-based buffer overread in xmlDictAddString <https://bugzilla.gnome.org/show_bug.cgi?id=758605> (Pranjal Jumde),<br/> 964 Bug 758588: Heap-based buffer overread in xmlParserPrintFileContextInternal <https://bugzilla.gnome.org/show_bug.cgi?id=758588> (David Kilzer),<br/> 965 Bug 757711: heap-buffer-overflow in xmlFAParsePosCharGroup <https://bugzilla.gnome.org/show_bug.cgi?id=757711> (Pranjal Jumde),<br/> 966 Add missing increments of recursion depth counter to XML parser. (Peter Simons)<br/> 967 </li> 968 969 <li>Documentation:<br/> 970 Fix typo: s{ ec -> cr }cipt (Jan Pokorný),<br/> 971 Fix typos: dictio{ nn -> n }ar{y,ies} (Jan Pokorný),<br/> 972 Fix typos: PATH_{ SEAPARATOR -> SEPARATOR } (Jan Pokorný),<br/> 973 Correct a typo. (Shlomi Fish)<br/> 974 </li> 975 976 <li>Portability:<br/> 977 Correct the usage of LDFLAGS (Mattias Hansson),<br/> 978 Revert the use of SAVE_LDFLAGS in configure.ac (Mattias Hansson),<br/> 979 libxml2 hardcodes -L/lib in zlib/lzma tests which breaks cross-compiles (Mike Frysinger),<br/> 980 Fix apibuild for a recently added construct (Daniel Veillard),<br/> 981 Use pkg-config to locate zlib when possible (Stewart Brodie),<br/> 982 Use pkg-config to locate ICU when possible (Stewart Brodie),<br/> 983 Portability to non C99 compliant compilers (Patrick Monnerat),<br/> 984 dict.h: Move xmlDictPtr definition before includes to allow direct inclusion. (Patrick Monnerat),<br/> 985 os400: tell about xmllint and xmlcatalog in README400. (Patrick Monnerat),<br/> 986 os400: properly process SGML add in XMLCATALOG command. (Patrick Monnerat),<br/> 987 os400: implement CL command XMLCATALOG. (Patrick Monnerat),<br/> 988 os400: compile and install program xmlcatalog (qshell-only). (Patrick Monnerat),<br/> 989 os400: expand tabs in sources, strip trailing blanks. (Patrick Monnerat),<br/> 990 os400: implement CL command XMLLINT. (Patrick Monnerat),<br/> 991 os400: compile and install program xmllint (qshell-only). (Patrick Monnerat),<br/> 992 os400: initscript make_module(): Use options instead of positional parameters. (Patrick Monnerat),<br/> 993 os400: c14n.rpgle: allow *omit for nullable reference parameters. (Patrick Monnerat),<br/> 994 os400: use like() for double type. (Patrick Monnerat),<br/> 995 os400: use like() for int type. (Patrick Monnerat),<br/> 996 os400: use like() for unsigned int type. (Patrick Monnerat),<br/> 997 os400: use like() for enum types. (Patrick Monnerat),<br/> 998 Add xz to xml2-config --libs output (Baruch Siach),<br/> 999 Bug 760190: configure.ac should be able to build --with-icu without icu-config tool <https://bugzilla.gnome.org/show_bug.cgi?id=760190> (David Kilzer),<br/> 1000 win32\VC10\config.h and VS 2015 (Bruce Dawson),<br/> 1001 Add configure maintainer mode (orzen)<br/> 1002 </li> 1003 1004 <li>Bug Fixes:<br/> 1005 Avoid an out of bound access when serializing malformed strings (Daniel Veillard),<br/> 1006 Unsigned addition may overflow in xmlMallocAtomicLoc() (David Kilzer),<br/> 1007 Integer signed/unsigned type mismatch in xmlParserInputGrow() (David Kilzer),<br/> 1008 Bug 763071: heap-buffer-overflow in xmlStrncat <https://bugzilla.gnome.org/show_bug.cgi?id=763071> (Pranjal Jumde),<br/> 1009 Integer overflow parsing port number in URI (Michael Paddon),<br/> 1010 Fix an error with regexp on nullable counted char transition (Daniel Veillard),<br/> 1011 Fix memory leak with XPath namespace nodes (Nick Wellnhofer),<br/> 1012 Fix namespace axis traversal (Nick Wellnhofer),<br/> 1013 Fix null pointer deref in docs with no root element (Hugh Davenport),<br/> 1014 Fix XSD validation of URIs with ampersands (Alex Henrie),<br/> 1015 xmlschemastypes.c: accept endOfDayFrag Times set to "24:00:00" mean "end of day" and should not cause an error. (Patrick Monnerat),<br/> 1016 xmlcatalog: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 1017 xmllint: flush stdout before interactive shell input. (Patrick Monnerat),<br/> 1018 Don't recurse into OP_VALUEs in xmlXPathOptimizeExpression (Nick Wellnhofer),<br/> 1019 Fix namespace::node() XPath expression (Nick Wellnhofer),<br/> 1020 Fix OOB write in xmlXPathEmptyNodeSet (Nick Wellnhofer),<br/> 1021 Fix parsing of NCNames in XPath (Nick Wellnhofer),<br/> 1022 Fix OOB read with invalid UTF-8 in xmlUTF8Strsize (Nick Wellnhofer),<br/> 1023 Do normalize string-based datatype value in RelaxNG facet checking (Audric Schiltknecht),<br/> 1024 Bug 760921: REGRESSION (8eb55d78): doc/examples/io1 test fails after fix for "xmlSaveUri() incorrectly recomposes URIs with rootless paths" <https://bugzilla.gnome.org/show_bug.cgi?id=760921> (David Kilzer),<br/> 1025 Bug 760861: REGRESSION (bf9c1dad): Missing results for test/schemas/regexp-char-ref_[01].xsd <https://bugzilla.gnome.org/show_bug.cgi?id=760861> (David Kilzer),<br/> 1026 error.c: *input->cur == 0 does not mean no error (Pavel Raiskup),<br/> 1027 Add missing RNG test files (David Kilzer),<br/> 1028 Bug 760183: REGRESSION (v2.9.3): XML push parser fails with bogus UTF-8 encoding error when multi-byte character in large CDATA section is split across buffer <https://bugzilla.gnome.org/show_bug.cgi?id=760183> (David Kilzer),<br/> 1029 Bug 758572: ASAN crash in make check <https://bugzilla.gnome.org/show_bug.cgi?id=758572> (David Kilzer),<br/> 1030 Bug 721158: Missing ICU string when doing --version on xmllint <https://bugzilla.gnome.org/show_bug.cgi?id=721158> (David Kilzer),<br/> 1031 python 3: libxml2.c wrappers create Unicode str already (Michael Stahl),<br/> 1032 Add autogen.sh to distrib (orzen),<br/> 1033 Heap-based buffer overread in xmlNextChar (Daniel Veillard)<br/> 1034 </li> 1035 1036 <li>Improvements:<br/> 1037 Add more debugging info to runtest (Daniel Veillard),<br/> 1038 Implement "runtest -u" mode (David Kilzer),<br/> 1039 Add a make rule to rebuild for ASAN (Daniel Veillard)<br/> 1040 </li> 1041 </ul> 1042 <h3>v2.9.3: Nov 20 2015</h3> 1043 <ul> 1044 <li>Security:<br/> 1045 CVE-2015-8242 Buffer overead with HTML parser in push mode (Hugh Davenport),<br/> 1046 CVE-2015-7500 Fix memory access error due to incorrect entities boundaries (Daniel Veillard),<br/> 1047 CVE-2015-7499-2 Detect incoherency on GROW (Daniel Veillard),<br/> 1048 CVE-2015-7499-1 Add xmlHaltParser() to stop the parser (Daniel Veillard),<br/> 1049 CVE-2015-5312 Another entity expansion issue (David Drysdale),<br/> 1050 CVE-2015-7497 Avoid an heap buffer overflow in xmlDictComputeFastQKey (David Drysdale),<br/> 1051 CVE-2015-7498 Avoid processing entities after encoding conversion failures (Daniel Veillard),<br/> 1052 CVE-2015-8035 Fix XZ compression support loop (Daniel Veillard),<br/> 1053 CVE-2015-7942-2 Fix an error in previous Conditional section patch (Daniel Veillard),<br/> 1054 CVE-2015-7942 Another variation of overflow in Conditional sections (Daniel Veillard),<br/> 1055 CVE-2015-1819 Enforce the reader to run in constant memory (Daniel Veillard)<br/> 1056 CVE-2015-7941_2 Cleanup conditional section error handling (Daniel Veillard),<br/> 1057 CVE-2015-7941_1 Stop parsing on entities boundaries errors (Daniel Veillard),<br/> 1058 </li> 1059 1060 <li>Documentation:<br/> 1061 Correct spelling of "calling" (Alex Henrie),<br/> 1062 Fix a small error in xmllint --format description (Fabien Degomme),<br/> 1063 Avoid XSS on the search of xmlsoft.org (Daniel Veillard)<br/> 1064 </li> 1065 1066 <li>Portability:<br/> 1067 threads: use forward declarations only for glibc (Michael Heimpold),<br/> 1068 Update Win32 configure.js to search for configure.ac (Daniel Veillard)<br/> 1069 </li> 1070 1071 <li>Bug Fixes:<br/> 1072 Bug on creating new stream from entity (Daniel Veillard),<br/> 1073 Fix some loop issues embedding NEXT (Daniel Veillard),<br/> 1074 Do not print error context when there is none (Daniel Veillard),<br/> 1075 Avoid extra processing of MarkupDecl when EOF (Hugh Davenport),<br/> 1076 Fix parsing short unclosed comment uninitialized access (Daniel Veillard),<br/> 1077 Add missing Null check in xmlParseExternalEntityPrivate (Gaurav Gupta),<br/> 1078 Fix a bug in CData error handling in the push parser (Daniel Veillard),<br/> 1079 Fix a bug on name parsing at the end of current input buffer (Daniel Veillard),<br/> 1080 Fix the spurious ID already defined error (Daniel Veillard),<br/> 1081 Fix previous change to node sort order (Nick Wellnhofer),<br/> 1082 Fix a self assignment issue raised by clang (Scott Graham),<br/> 1083 Fail parsing early on if encoding conversion failed (Daniel Veillard),<br/> 1084 Do not process encoding values if the declaration if broken (Daniel Veillard),<br/> 1085 Silence clang's -Wunknown-attribute (Michael Catanzaro),<br/> 1086 xmlMemUsed is not thread-safe (Martin von Gagern),<br/> 1087 Fix support for except in nameclasses (Daniel Veillard),<br/> 1088 Fix order of root nodes (Nick Wellnhofer),<br/> 1089 Allow attributes on descendant-or-self axis (Nick Wellnhofer),<br/> 1090 Fix the fix to Windows locking (Steve Nairn),<br/> 1091 Fix timsort invariant loop re: Envisage article (Christopher Swenson),<br/> 1092 Don't add IDs in xmlSetTreeDoc (Nick Wellnhofer),<br/> 1093 Account for ID attributes in xmlSetTreeDoc (Nick Wellnhofer),<br/> 1094 Remove various unused value assignments (Philip Withnall),<br/> 1095 Fix missing entities after CVE-2014-3660 fix (Daniel Veillard),<br/> 1096 Revert "Missing initialization for the catalog module" (Daniel Veillard)<br/> 1097 </li> 1098 1099 <li>Improvements:<br/> 1100 Reuse xmlHaltParser() where it makes sense (Daniel Veillard),<br/> 1101 xmlStopParser reset errNo (Daniel Veillard),<br/> 1102 Reenable xz support by default (Daniel Veillard),<br/> 1103 Recover unescaped less-than character in HTML recovery parsing (Daniel Veillard),<br/> 1104 Allow HTML serializer to output HTML5 DOCTYPE (Shaun McCance),<br/> 1105 Regression test for bug #695699 (Nick Wellnhofer),<br/> 1106 Add a couple of XPath tests (Nick Wellnhofer),<br/> 1107 Add Python 3 rpm subpackage (Tomas Radej),<br/> 1108 libxml2-config.cmake.in: update include directories (Samuel Martin),<br/> 1109 Adding example from bugs 738805 to regression tests (Daniel Veillard)<br/> 1110 </li> 1111 1112 <li>Cleanups:<br/> 1113 </li> 1114 </ul> 1115 <h3>2.9.2: Oct 16 2014</h3> 1116 <ul> 1117 <li>Security:<br/> 1118 Fix for CVE-2014-3660 billion laugh variant (Daniel Veillard),<br/> 1119 CVE-2014-0191 Do not fetch external parameter entities (Daniel Veillard)<br/> 1120 </li> 1121 1122 <li>Bug Fixes:<br/> 1123 fix memory leak xml header encoding field with XML_PARSE_IGNORE_ENC (Bart De Schuymer),<br/> 1124 xmlmemory: handle realloc properly (Yegor Yefremov),<br/> 1125 Python generator bug raised by the const change (Daniel Veillard),<br/> 1126 Windows Critical sections not released correctly (Daniel Veillard),<br/> 1127 Parser error on repeated recursive entity expansion containing &lt; (Daniel Veillard),<br/> 1128 xpointer : fixing Null Pointers (Gaurav Gupta),<br/> 1129 Remove Unnecessary Null check in xpointer.c (Gaurav Gupta),<br/> 1130 parser bug on misformed namespace attributes (Dennis Filder),<br/> 1131 Pointer dereferenced before null check (Daniel Veillard),<br/> 1132 Leak of struct addrinfo in xmlNanoFTPConnect() (Gaurav Gupta),<br/> 1133 Possible overflow in HTMLParser.c (Daniel Veillard),<br/> 1134 python/tests/sync.py assumes Python dictionaries are ordered (John Beck),<br/> 1135 Fix Enum check and missing break (Gaurav Gupta),<br/> 1136 xmlIO: Handle error returns from dup() (Philip Withnall),<br/> 1137 Fix a problem properly saving URIs (Daniel Veillard),<br/> 1138 wrong error column in structured error when parsing attribute values (Juergen Keil),<br/> 1139 wrong error column in structured error when skipping whitespace in xml decl (Juergen Keil),<br/> 1140 no error column in structured error handler for xml schema validation errors (Juergen Keil),<br/> 1141 Couple of Missing Null checks (Gaurav Gupta),<br/> 1142 Add couple of missing Null checks (Daniel Veillard),<br/> 1143 xmlschemastypes: Fix potential array overflow (Philip Withnall),<br/> 1144 runtest: Fix a memory leak on parse failure (Philip Withnall),<br/> 1145 xmlIO: Fix an FD leak on gzdopen() failure (Philip Withnall),<br/> 1146 xmlcatalog: Fix a memory leak on quit (Philip Withnall),<br/> 1147 HTMLparser: Correctly initialise a stack allocated structure (Philip Withnall),<br/> 1148 Check for tmon in _xmlSchemaDateAdd() is incorrect (David Kilzer),<br/> 1149 Avoid Possible Null Pointer in trio.c (Gaurav Gupta),<br/> 1150 Fix processing in SAX2 in case of an allocation failure (Daniel Veillard),<br/> 1151 XML Shell command "cd" does not handle "/" at end of path (Daniel Veillard),<br/> 1152 Fix various Missing Null checks (Gaurav Gupta),<br/> 1153 Fix a potential NULL dereference (Daniel Veillard),<br/> 1154 Add a couple of misisng check in xmlRelaxNGCleanupTree (Gaurav Gupta),<br/> 1155 Add a missing argument check (Gaurav Gupta),<br/> 1156 Adding a check in case of allocation error (Gaurav Gupta),<br/> 1157 xmlSaveUri() incorrectly recomposes URIs with rootless paths (Dennis Filder),<br/> 1158 Adding some missing NULL checks (Gaurav),<br/> 1159 Fixes for xmlInitParserCtxt (Daniel Veillard),<br/> 1160 Fix regressions introduced by CVE-2014-0191 patch (Daniel Veillard),<br/> 1161 erroneously ignores a validation error if no error callback set (Daniel Veillard),<br/> 1162 xmllint was not parsing the --c14n11 flag (Sérgio Batista),<br/> 1163 Avoid Possible null pointer dereference in memory debug mode (Gaurav),<br/> 1164 Avoid Double Null Check (Gaurav),<br/> 1165 Restore context size and position after XPATH_OP_ARG (Nick Wellnhofer),<br/> 1166 Fix xmlParseInNodeContext() if node is not element (Daniel Veillard),<br/> 1167 Avoid a possible NULL pointer dereference (Gaurav),<br/> 1168 Fix xmlTextWriterWriteElement when a null content is given (Daniel Veillard),<br/> 1169 Fix an typo 'onrest' in htmlScriptAttributes (Daniel Veillard),<br/> 1170 fixing a ptotential uninitialized access (Daniel Veillard),<br/> 1171 Fix an fd leak in an error case (Daniel Veillard),<br/> 1172 Missing initialization for the catalog module (Daniel Veillard),<br/> 1173 Handling of XPath function arguments in error case (Nick Wellnhofer),<br/> 1174 Fix a couple of missing NULL checks (Gaurav),<br/> 1175 Avoid a possibility of dangling encoding handler (Gaurav),<br/> 1176 Fix HTML push parser to accept HTML_PARSE_NODEFDTD (Arnold Hendriks),<br/> 1177 Fix a bug loading some compressed files (Mike Alexander),<br/> 1178 Fix XPath node comparison bug (Gaurav),<br/> 1179 Type mismatch in xmlschemas.c (Gaurav),<br/> 1180 Type mismatch in xmlschemastypes.c (Gaurav),<br/> 1181 Avoid a deadcode in catalog.c (Daniel Veillard),<br/> 1182 run close socket on Solaris, same as we do on other platforms (Denis Pauk),<br/> 1183 Fix pointer dereferenced before null check (Gaurav),<br/> 1184 Fix a potential NULL dereference in tree code (Daniel Veillard),<br/> 1185 Fix potential NULL pointer dereferences in regexp code (Gaurav),<br/> 1186 xmllint --pretty crashed without following numeric argument (Tim Galeckas),<br/> 1187 Fix XPath expressions of the form '@ns:*' (Nick Wellnhofer),<br/> 1188 Fix XPath '//' optimization with predicates (Nick Wellnhofer),<br/> 1189 Clear up a potential NULL dereference (Daniel Veillard),<br/> 1190 Fix a possible NULL dereference (Gaurav),<br/> 1191 Avoid crash if allocation fails (Daniel Veillard),<br/> 1192 Remove occasional leading space in XPath number formatting (Daniel Veillard),<br/> 1193 Fix handling of mmap errors (Daniel Veillard),<br/> 1194 Catch malloc error and exit accordingly (Daniel Veillard),<br/> 1195 missing else in xlink.c (Ami Fischman),<br/> 1196 Fix a parsing bug on non-ascii element and CR/LF usage (Daniel Veillard),<br/> 1197 Fix a regression in xmlGetDocCompressMode() (Daniel Veillard),<br/> 1198 properly quote the namespace uris written out during c14n (Aleksey Sanin),<br/> 1199 Remove premature XInclude check on URI being relative (Alexey Neyman),<br/> 1200 Fix missing break on last() function for attributes (dcb),<br/> 1201 Do not URI escape in server side includes (Romain Bondue),<br/> 1202 Fix an error in xmlCleanupParser (Alexander Pastukhov)<br/> 1203 </li> 1204 1205 <li>Documentation:<br/> 1206 typo in error messages "colon are forbidden from..." (Daniel Veillard),<br/> 1207 Fix a link to James SAX documentation old page (Daniel Veillard),<br/> 1208 Fix typos in relaxng.c (Jan Pokorný),<br/> 1209 Fix a doc typo (Daniel Veillard),<br/> 1210 Fix typos in {tree,xpath}.c (errror) (Jan Pokorný),<br/> 1211 Add limitations about encoding conversion (Daniel Veillard),<br/> 1212 Fix typos in xmlschemas{,types}.c (Jan Pokorný),<br/> 1213 Fix incorrect spelling entites->entities (Jan Pokorný),<br/> 1214 Forgot to document 2.9.1 release, regenerate docs (Daniel Veillard)<br/> 1215 </li> 1216 1217 <li>Portability:<br/> 1218 AC_CONFIG_FILES and executable bit (Roumen Petrov),<br/> 1219 remove HAVE_CONFIG_H dependency in testlimits.c (Roumen Petrov),<br/> 1220 fix some tabs mixing incompatible with python3 (Roumen Petrov),<br/> 1221 Visual Studio 14 CTP defines snprintf() (Francis Dupont),<br/> 1222 OS400: do not try to copy unexisting doc files (Patrick Monnerat),<br/> 1223 OS400: use either configure.ac or configure.in. (Patrick Monnerat),<br/> 1224 os400: make-src.sh: create physical file with target CCSID (Patrick Monnerat),<br/> 1225 OS400: Add some more C macros equivalent procedures. (Patrick Monnerat),<br/> 1226 OS400: use C macros to implement equivalent RPG support procedures. (Patrick Monnerat),<br/> 1227 OS400: implement XPath macros as procedures for ILE/RPG support. (Patrick Monnerat),<br/> 1228 OS400: include in distribution tarball. (Patrick Monnerat),<br/> 1229 OS400: Add README: compilation directives and OS/400 specific stuff. (Patrick Monnerat),<br/> 1230 OS400: Add compilation scripts. (Patrick Monnerat),<br/> 1231 OS400: ILE RPG language header files. (Patrick Monnerat),<br/> 1232 OS400: implement some macros as functions for ILE/RPG language support (that as no macros). (Patrick Monnerat),<br/> 1233 OS400: UTF8<-->EBCDIC wrappers for system and external library calls (Patrick Monnerat),<br/> 1234 OS400: Easy character transcoding support (Patrick Monnerat),<br/> 1235 OS400: iconv functions compatibility wrappers and table builder. (Patrick Monnerat),<br/> 1236 OS400: create architecture directory. Implement dlfcn emulation. (Patrick Monnerat),<br/> 1237 Fix building when configuring without xpath and xptr (Daniel Veillard),<br/> 1238 configure: Add --with-python-install-dir (Jonas Eriksson),<br/> 1239 Fix compilation with minimum and xinclude. (Nicolas Le Cam),<br/> 1240 Compile out use of xmlValidateNCName() when not available. (Nicolas Le Cam),<br/> 1241 Fix compilation with minimum and schematron. (Nicolas Le Cam),<br/> 1242 Legacy needs xmlSAX2StartElement() and xmlSAX2EndElement(). (Nicolas Le Cam),<br/> 1243 Don't use xmlValidateName() when not available. (Nicolas Le Cam),<br/> 1244 Fix a portability issue on Windows (Longstreth Jon),<br/> 1245 Various portability patches for OpenVMS (Jacob (Jouk) Jansen),<br/> 1246 Use specific macros for portability to OS/400 (Patrick Monnerat),<br/> 1247 Add macros needed for OS/400 portability (Patrick Monnerat),<br/> 1248 Portability patch for fopen on OS/400 (Patrick Monnerat),<br/> 1249 Portability fixes for OS/400 (Patrick Monnerat),<br/> 1250 Improve va_list portability (Patrick Monnerat),<br/> 1251 Portability fix (Patrick Monnerat),<br/> 1252 Portability fix (Patrick Monnerat),<br/> 1253 Generic portability fix (Patrick Monnerat),<br/> 1254 Shortening lines in headers (Patrick Monnerat),<br/> 1255 build: Use pkg-config to find liblzma in preference to AC_CHECK_LIB (Philip Withnall),<br/> 1256 build: Add @LZMA_LIBS@ to libxml’s pkg-config files (Philip Withnall),<br/> 1257 fix some tabs mixing incompatible with python3 (Daniel Veillard),<br/> 1258 add additional defines checks for support "./configure --with-minimum" (Denis Pauk),<br/> 1259 Another round of fixes for older versions of Python (Arfrever Frehtes Taifersar Arahesis),<br/> 1260 python: fix drv_libxml2.py for python3 compatibility (Alexandre Rostovtsev),<br/> 1261 python: Fix compiler warnings when building python3 bindings (Armin K),<br/> 1262 Fix for compilation with python 2.6.8 (Petr Sumbera)<br/> 1263 </li> 1264 1265 <li>Improvements:<br/> 1266 win32/libxml2.def.src after rebuild in doc (Roumen Petrov),<br/> 1267 elfgcchack.h: more legacy needs xmlSAX2StartElement() and xmlSAX2EndElement() (Roumen Petrov),<br/> 1268 elfgcchack.h: add xmlXPathNodeEval and xmlXPathSetContextNode (Roumen Petrov),<br/> 1269 Provide cmake module (Samuel Martin),<br/> 1270 Fix a couple of issues raised by make dist (Daniel Veillard),<br/> 1271 Fix and add const qualifiers (Kurt Roeckx),<br/> 1272 Preparing for upcoming release of 2.9.2 (Daniel Veillard),<br/> 1273 Fix zlib and lzma libraries check via command line (Dmitriy),<br/> 1274 wrong error column in structured error when parsing end tag (Juergen Keil),<br/> 1275 doc/news.html: small update to avoid line join while generating NEWS. (Patrick Monnerat),<br/> 1276 Add methods for python3 iterator (Ron Angeles),<br/> 1277 Support element node traversal in document fragments. (Kyle VanderBeek),<br/> 1278 xmlNodeSetName: Allow setting the name to a substring of the currently set name (Tristan Van Berkom),<br/> 1279 Added macros for argument casts (Eric Zurcher),<br/> 1280 adding init calls to xml and html Read parsing entry points (Daniel Veillard),<br/> 1281 Get rid of 'REPLACEMENT CHARACTER' Unicode chars in xmlschemas.c (Jan Pokorný),<br/> 1282 Implement choice for name classes on attributes (Shaun McCance),<br/> 1283 Two small namespace tweaks (Daniel Veillard),<br/> 1284 xmllint --memory should fail on empty files (Daniel Veillard),<br/> 1285 Cast encoding name to char pointer to match arg type (Nikolay Sivov)<br/> 1286 </li> 1287 1288 <li>Cleanups:<br/> 1289 Removal of old configure.in (Daniel Veillard),<br/> 1290 Unreachable code in tree.c (Gaurav Gupta),<br/> 1291 Remove a couple of dead conditions (Gaurav Gupta),<br/> 1292 Avoid some dead code and cleanup in relaxng.c (Gaurav),<br/> 1293 Drop not needed checks (Denis Pauk),<br/> 1294 Fix a wrong test (Daniel Veillard)<br/> 1295 </li> 1296 </ul> 1297 <h3>2.9.1: Apr 19 2013</h3> 1298 <ul> 1299 <li> Features:<br/> 1300 Support for Python3 (Daniel Veillard),<br/> 1301 Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)<br/> 1302 </li> 1303 1304 <li> Documentation:<br/> 1305 Add documentation for xmllint --xpath (Daniel Veillard),<br/> 1306 Fix the URL of the SAX documentation from James (Daniel Veillard),<br/> 1307 Fix spelling of "length". (Michael Wood)<br/> 1308 </li> 1309 1310 <li> Portability:<br/> 1311 Fix python bindings with versions older than 2.7 (Daniel Veillard),<br/> 1312 rebuild docs:Makefile.am (Roumen Petrov),<br/> 1313 elfgcchack.h after rebuild in doc (Roumen Petrov),<br/> 1314 elfgcchack for buf module (Roumen Petrov),<br/> 1315 Fix a uneeded and wrong extra link parameter (Daniel Veillard),<br/> 1316 Few cleanup patches for Windows (Denis Pauk),<br/> 1317 Fix rpmbuild --nocheck (Mark Salter),<br/> 1318 Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard),<br/> 1319 Fix Broken multi-arch support in xml2-config (Daniel Veillard),<br/> 1320 Fix a portability issue for GCC < 3.4.0 (Daniel Veillard),<br/> 1321 Windows build fixes (Daniel Richard),<br/> 1322 Fix a thread portability problem (Friedrich Haubensak),<br/> 1323 Downgrade autoconf requirement to 2.63 (Daniel Veillard)<br/> 1324 </li> 1325 1326 <li> Bug Fixes:<br/> 1327 Fix a linking error for python bindings (Daniel Veillard),<br/> 1328 Fix a couple of return without value (Jüri Aedla),<br/> 1329 Improve the hashing functions (Daniel Franke),<br/> 1330 Improve handling of xmlStopParser() (Daniel Veillard),<br/> 1331 Remove risk of lockup in dictionary initialization (Daniel Veillard),<br/> 1332 Activate detection of encoding in external subset (Daniel Veillard),<br/> 1333 Fix an output buffer flushing conversion bug (Mikhail Titov),<br/> 1334 Fix an old bug in xmlSchemaValidateOneElement (Csaba László),<br/> 1335 Fix configure cannot remove messages (Gilles Espinasse),<br/> 1336 fix schema validation in combination with xsi:nil (Daniel Veillard),<br/> 1337 xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf),<br/> 1338 Fix a few problems with setEntityLoader (Alexey Neyman),<br/> 1339 Detect excessive entities expansion upon replacement (Daniel Veillard),<br/> 1340 Fix the flushing out of raw buffers on encoding conversions (Daniel,<br/> 1341 Veillard),<br/> 1342 Fix some buffer conversion issues (Daniel Veillard),<br/> 1343 When calling xmlNodeDump make sure we grow the buffer quickly (Daniel,<br/> 1344 Veillard),<br/> 1345 Fix an error in the progressive DTD parsing code (Dan Winship),<br/> 1346 xmllint should not load DTD by default when using the reader (Daniel,<br/> 1347 Veillard),<br/> 1348 Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera),<br/> 1349 Fix potential out of bound access (Daniel Veillard),<br/> 1350 Fix large parse of file from memory (Daniel Veillard),<br/> 1351 Fix a bug in the nsclean option of the parser (Daniel Veillard),<br/> 1352 Fix a regression in 2.9.0 breaking validation while streaming (Daniel,<br/> 1353 Veillard),<br/> 1354 Remove potential calls to exit() (Daniel Veillard)<br/> 1355 </li> 1356 1357 <li> Improvements:<br/> 1358 Regenerated API, and testapi, rebuild documentation (Daniel Veillard),<br/> 1359 Fix tree iterators broken by 2to3 script (Daniel Veillard),<br/> 1360 update all tests for Python3 and Python2 (Daniel Veillard),<br/> 1361 A few more fixes for python 3 affecting libxml2.py (Daniel Veillard),<br/> 1362 Fix compilation on Python3 (Daniel Veillard),<br/> 1363 Converting apibuild.py to python3 (Daniel Veillard),<br/> 1364 First pass at starting porting to python3 (Daniel Veillard),<br/> 1365 updated configure.in for python3 (Daniel Veillard),<br/> 1366 Add support for xpathRegisterVariable in Python (Shaun McCance),<br/> 1367 Added a regression tests from bug 694228 data (Daniel Veillard),<br/> 1368 Cache presence of '<' in entities content (Daniel Veillard),<br/> 1369 Avoid extra processing on entities (Daniel Veillard),<br/> 1370 Python binding for xmlRegisterInputCallback (Alexey Neyman),<br/> 1371 Python bindings: DOM casts everything to xmlNode (Alexey Neyman),<br/> 1372 Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling),<br/> 1373 Adding streaming validation to runtest checks (Daniel Veillard),<br/> 1374 Add a --pushsmall option to xmllint (Daniel Veillard)<br/> 1375 </li> 1376 1377 <li> Cleanups:<br/> 1378 Switched comment in file to UTF-8 encoding (Daniel Veillard),<br/> 1379 Extend gitignore (Daniel Veillard),<br/> 1380 Silent the new python test on input (Alexey Neyman),<br/> 1381 Cleanup of a duplicate test (Daniel Veillard),<br/> 1382 Cleanup on duplicate test expressions (Daniel Veillard),<br/> 1383 Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick,<br/> 1384 Gansterer),<br/> 1385 Spec cleanups and a fix for multiarch support (Daniel Veillard),<br/> 1386 Silence a clang warning (Daniel Veillard),<br/> 1387 Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard),<br/> 1388 rand_seed should be static in dict.c (Wouter Van Rooy),<br/> 1389 Fix typos in parser comments (Jan Pokorný)<br/> 1390 </li> 1391 </ul> 1392 <h3>2.9.0: Sep 11 2012</h3> 1393 <ul> 1394 <li> Features:<br/> 1395 A few new API entry points,<br/> 1396 More resilient push parser mode,<br/> 1397 A lot of portability improvement,<br/> 1398 Faster XPath evaluation<br/> 1399 </li> 1400 1401 <li> Documentation:<br/> 1402 xml2-config.1 markup error (Christian Weisgerber),<br/> 1403 libxml(3) manpage typo fix (John Bradshaw),<br/> 1404 More cleanups to the documentation part of libxml2 (Daniel Richard G)<br/> 1405 </li> 1406 1407 <li> Portability:<br/> 1408 Bug 676544 - fails to build with --without-sax1 (Akira TAGOH),<br/> 1409 fix builds not having stdint.h (Rob Richards),<br/> 1410 GetProcAddressA is available only on WinCE (Daniel Veillard),<br/> 1411 More updates and cleanups on autotools and Makefiles (Daniel Richard G),<br/> 1412 More changes for Win32 compilation (Eric Zurcher),<br/> 1413 Basic changes for Win32 builds of release 2.9.0: compile buf.c (Eric Zurcher),<br/> 1414 Bundles all generated files for python into the distribution (Daniel Richard G),<br/> 1415 Fix compiler warnings of wincecompat.c (Patrick Gansterer),<br/> 1416 Fix non __GNUC__ build (Patrick Gansterer),<br/> 1417 Fix windows unicode build (Patrick Gansterer),<br/> 1418 clean redefinition of {v}snprintf in C-source (Roumen Petrov),<br/> 1419 use xmlBuf... if DEBUG_INPUT is defined (Roumen Petrov),<br/> 1420 fix runtests to use pthreads support for various Unix platforms (Daniel Richard G),<br/> 1421 Various "make distcheck" and portability fixups 2nd part (Daniel Richard G),<br/> 1422 Various "make distcheck" and portability fixups (Daniel Richard G),<br/> 1423 Fix compilation on older Visual Studio (Daniel Veillard)<br/> 1424 </li> 1425 1426 <li> Bug Fixes:<br/> 1427 Change the XPath code to percolate allocation errors (Daniel Veillard),<br/> 1428 Fix reuse of xmlInitParser (Daniel Veillard),<br/> 1429 Fix potential crash on entities errors (Daniel Veillard),<br/> 1430 initialize var (Rob Richards),<br/> 1431 Fix the XPath arity check to also check the XPath stack limits (Daniel Veillard),<br/> 1432 Fix problem with specific and generic error handlers (Pietro Cerutti),<br/> 1433 Avoid a potential infinite recursion (Daniel Veillard),<br/> 1434 Fix an XSD error when generating internal automata (Daniel Veillard),<br/> 1435 Patch for xinclude of text using multibyte characters (Vitaly Ostanin),<br/> 1436 Fix a segfault on XSD validation on pattern error (Daniel Veillard),<br/> 1437 Fix missing xmlsave.h module which was ignored in recent builds (Daniel Veillard),<br/> 1438 Add a missing element check (Daniel Veillard),<br/> 1439 Adding various checks on node type though the API (Daniel Veillard),<br/> 1440 Namespace nodes can't be unlinked with xmlUnlinkNode (Daniel Veillard),<br/> 1441 Fix make dist to include new private header files (Daniel Veillard),<br/> 1442 More fixups on the push parser behaviour (Daniel Veillard),<br/> 1443 Strengthen behaviour of the push parser in problematic situations (Daniel Veillard),<br/> 1444 Enforce XML_PARSER_EOF state handling through the parser (Daniel Veillard),<br/> 1445 Fixup limits parser (Daniel Veillard),<br/> 1446 Do not fetch external parsed entities (Daniel Veillard),<br/> 1447 Fix an error in previous commit (Aron Xu),<br/> 1448 Fix entities local buffers size problems (Daniel Veillard),<br/> 1449 Fix parser local buffers size problems (Daniel Veillard),<br/> 1450 Fix a failure to report xmlreader parsing failures (Daniel Veillard)<br/> 1451 </li> 1452 1453 <li> Improvements:<br/> 1454 Keep libxml2.syms when running "make distclean" (Daniel Veillard),<br/> 1455 Allow to set the quoting character of an xmlWriter (Csaba Raduly),<br/> 1456 Keep non-significant blanks node in HTML parser (Daniel Veillard),<br/> 1457 Add a forbidden variable error number and message to XPath (Daniel Veillard),<br/> 1458 Support long path names on WNT (Michael Stahl),<br/> 1459 Improve HTML escaping of attribute on output (Daniel Veillard),<br/> 1460 Handle ICU_LIBS as LIBADD, not LDFLAGS to prevent linking errors (Arfrever Frehtes Taifersar Arahesis),<br/> 1461 Switching XPath node sorting to Timsort (Vojtech Fried),<br/> 1462 Optimizing '//' in XPath expressions (Nick Wellnhofer),<br/> 1463 Expose xmlBufShrink in the public tree API (Daniel Veillard),<br/> 1464 Visible HTML elements close the head tag (Conrad Irwin),<br/> 1465 Fix file and line report for XSD SAX and reader streaming validation (Daniel Veillard),<br/> 1466 Fix const qualifyer to definition of xmlBufferDetach (Daniel Veillard),<br/> 1467 minimize use of HAVE_CONFIG_H (Roumen Petrov),<br/> 1468 fixup regression in Various "make distcheck" and portability fixups (Roumen Petrov),<br/> 1469 Add support for big line numbers in error reporting (Daniel Veillard),<br/> 1470 Avoid using xmlBuffer for serialization (Daniel Veillard),<br/> 1471 Improve compatibility between xmlBuf and xmlBuffer (Daniel Veillard),<br/> 1472 Provide new accessors for xmlOutputBuffer (Daniel Veillard),<br/> 1473 Improvements for old buffer compatibility (Daniel Veillard),<br/> 1474 Expand the limit test program (Daniel Veillard),<br/> 1475 Improve error reporting on parser errors (Daniel Veillard),<br/> 1476 Implement some default limits in the XPath module (Daniel Veillard),<br/> 1477 Introduce some default parser limits (Daniel Veillard),<br/> 1478 Cleanups and new limit APIs for dictionaries (Daniel Veillard),<br/> 1479 Fixup for buf.c (Daniel Veillard),<br/> 1480 Cleanup URI module memory allocation code (Daniel Veillard),<br/> 1481 Extend testlimits (Daniel Veillard),<br/> 1482 More avoid quadratic behaviour (Daniel Veillard),<br/> 1483 Impose a reasonable limit on PI size (Daniel Veillard),<br/> 1484 first version of testlimits new test (Daniel Veillard),<br/> 1485 Avoid quadratic behaviour in some push parsing cases (Daniel Veillard),<br/> 1486 Impose a reasonable limit on comment size (Daniel Veillard),<br/> 1487 Impose a reasonable limit on attribute size (Daniel Veillard),<br/> 1488 Harden the buffer code and make it more compatible (Daniel Veillard),<br/> 1489 More cleanups for input/buffers code (Daniel Veillard),<br/> 1490 Cleanup function xmlBufResetInput(),<br/> to set input from Buffer (Daniel Veillard) 1491 Swicth the test program for characters to new input buffers (Daniel Veillard),<br/> 1492 Convert the HTML tree module to the new buffers (Daniel Veillard),<br/> 1493 Convert of the HTML parser to new input buffers (Daniel Veillard),<br/> 1494 Convert the writer to new output buffer and save APIs (Daniel Veillard),<br/> 1495 Convert XMLReader to the new input buffers (Daniel Veillard),<br/> 1496 New saving functions using xmlBuf and conversion (Daniel Veillard),<br/> 1497 Provide new xmlBuf based saving functions (Daniel Veillard),<br/> 1498 Convert XInclude to the new input buffers (Daniel Veillard),<br/> 1499 Convert catalog code to the new input buffers (Daniel Veillard),<br/> 1500 Convert C14N to the new Input buffer (Daniel Veillard),<br/> 1501 Convert xmlIO.c to the new input and output buffers (Daniel Veillard),<br/> 1502 Convert XML parser to the new input buffers (Daniel Veillard),<br/> 1503 Incompatible change to the Input and Output buffers (Daniel Veillard),<br/> 1504 Adding new encoding function to deal with the new structures (Daniel Veillard),<br/> 1505 Convert XPath to xmlBuf (Daniel Veillard),<br/> 1506 Adding a new buf module for buffers (Daniel Veillard),<br/> 1507 Memory error within SAX2 reuse common framework (Daniel Veillard),<br/> 1508 Fix xmllint --xpath node initialization (Daniel Veillard)<br/> 1509 </li> 1510 1511 <li> Cleanups:<br/> 1512 Various cleanups to avoid compiler warnings (Daniel Veillard),<br/> 1513 Big space and tab cleanup (Daniel Veillard),<br/> 1514 Followup to LibXML2 docs/examples cleanup patch (Daniel Veillard),<br/> 1515 Second round of cleanups for LibXML2 docs/examples (Daniel Richard),<br/> 1516 Remove all .cvsignore as they are not used anymore (Daniel Veillard),<br/> 1517 Fix a Timsort function helper comment (Daniel Veillard),<br/> 1518 Small cleanup for valgrind target (Daniel Veillard),<br/> 1519 Patch for portability of latin characters in C files (Daniel Veillard),<br/> 1520 Cleanup some of the parser code (Daniel Veillard),<br/> 1521 Fix a variable name in comment (Daniel Veillard),<br/> 1522 Regenerated testapi.c (Daniel Veillard),<br/> 1523 Regenerating docs and API files (Daniel Veillard),<br/> 1524 Small cleanup of unused variables in test (Daniel Veillard),<br/> 1525 Expand .gitignore with more files (Daniel Veillard)<br/> 1526 </li> 1527 </ul> 1528 <h3>2.8.0: May 23 2012</h3> 1529 <ul> 1530 <li>Features: 1531 add lzma compression support (Anders F Bjorklund) 1532 </li> 1533 1534 <li>Documentation: 1535 xmlcatalog: Add uri and delegateURI to possible add types in man page. (Ville Skyttä), 1536 Update README.tests (Daniel Veillard), 1537 URI handling code is not OOM resilient (Daniel Veillard), 1538 Fix an error in comment (Daniel Veillard), 1539 Fixed bug #617016 (Daniel Mustieles), 1540 Fixed two typos in the README document (Daniel Neel), 1541 add generated html files (Anders F Bjorklund), 1542 Clarify the need to use xmlFreeNode after xmlUnlinkNode (Daniel Veillard), 1543 Improve documentation a bit (Daniel Veillard), 1544 Updated URL for lxml python bindings (Daniel Veillard) 1545 </li> 1546 1547 <li>Portability: 1548 Restore code for Windows compilation (Daniel Veillard), 1549 Remove git error message during configure (Christian Dywan), 1550 xmllint: Build fix for endTimer if !defined(HAVE_GETTIMEOFDAY) (Patrick R. Gansterer), 1551 remove a bashism in confgure.in (John Hein), 1552 undef ERROR if already defined (Patrick R. Gansterer), 1553 Fix library problems with mingw-w64 (Michael Cronenworth), 1554 fix windows build. ifdef addition from bug 666491 makes no sense (Rob Richards), 1555 prefer native threads on win32 (Sam Thursfield), 1556 Allow to compile with Visual Studio 2010 (Thomas Lemm), 1557 Fix mingw's snprintf configure check (Andoni Morales), 1558 fixed a 64bit big endian issue (Marcus Meissner), 1559 Fix portability failure if netdb.h lacks NO_ADDRESS (Daniel Veillard), 1560 Fix windows build from lzma addition (Rob Richards), 1561 autogen: Only check for libtoolize (Colin Walters), 1562 Fix the Windows build files (Patrick von Reth), 1563 634846 Remove a linking option breaking Windows VC10 (Daniel Veillard), 1564 599241 fix an initialization problem on Win64 (Andrew W. Nosenko), 1565 fix win build (Rob Richards) 1566 </li> 1567 1568 <li>Bug fixes: 1569 Part for rand_r checking missing (Daniel Veillard), 1570 Cleanup on randomization (Daniel Veillard), 1571 Fix undefined reference in python module (Pacho Ramos), 1572 Fix a race in xmlNewInputStream (Daniel Veillard), 1573 Fix weird streaming RelaxNG errors (Noam), 1574 Fix various bugs in new code raised by the API checking (Daniel Veillard), 1575 Fix various problems with "make dist" (Daniel Veillard), 1576 Fix a memory leak in the xzlib code (Daniel Veillard), 1577 HTML parser error with <noscript> in the <head> (Denis Pauk), 1578 XSD: optional element in complex type extension (Remi Gacogne), 1579 Fix html serialization error and htmlSetMetaEncoding() (Daniel Veillard), 1580 Fix a wrong return value in previous patch (Daniel Veillard), 1581 Fix an uninitialized variable use (Daniel Veillard), 1582 Fix a compilation problem with --minimum (Brandon Slack), 1583 Remove redundant and ungarded include of resolv.h (Daniel Veillard), 1584 xinclude with parse="text" does not use the entity loader (Shaun McCance), 1585 Allow to parse 1 byte HTML files (Denis Pauk), 1586 Patch that fixes the skipping of the HTML_PARSE_NOIMPLIED flag (Martin Schröder), 1587 Avoid memory leak if xmlParserInputBufferCreateIO fails (Lin Yi-Li), 1588 Prevent an infinite loop when dumping a node with encoding problems (Timothy Elliott), 1589 xmlParseNodeInContext problems with an empty document (Tim Elliott), 1590 HTML element position is not detected propperly (Pavel Andrejs), 1591 Fix an off by one pointer access (Jüri Aedla), 1592 Try to fix a problem with entities in SAX mode (Daniel Veillard), 1593 Fix a crash with xmllint --path on empty results (Daniel Veillard), 1594 Fixed bug #667946 (Daniel Mustieles), 1595 Fix a logic error in Schemas Component Constraints (Ryan Sleevi), 1596 Fix a wrong enum type use in Schemas Types (Nico Weber), 1597 Fix SAX2 builder in case of undefined attributes namespace (Daniel Veillard), 1598 Fix SAX2 builder in case of undefined element namespaces (Daniel Veillard), 1599 fix reference to STDOUT_FILENO on MSVC (Tay Ray Chuan), 1600 fix a pair of possible out of array char references (Daniel Veillard), 1601 Fix an allocation error when copying entities (Daniel Veillard), 1602 Make sure the parser returns when getting a Stop order (Chris Evans), 1603 Fix some potential problems on reallocation failures(parser.c) (Xia Xinfeng), 1604 Fix a schema type duration comparison overflow (Daniel Veillard), 1605 Fix an unimplemented part in RNG value validation (Daniel Veillard), 1606 Fix missing error status in XPath evaluation (Daniel Veillard), 1607 Hardening of XPath evaluation (Daniel Veillard), 1608 Fix an off by one error in encoding (Daniel Veillard), 1609 Fix RELAX NG include bug #655288 (Shaun McCance), 1610 Fix XSD validation bug #630130 (Toyoda Eizi), 1611 Fix some potential problems on reallocation failures (Chris Evans), 1612 __xmlRaiseError: fix use of the structured callback channel (Dmitry V. Levin), 1613 __xmlRaiseError: fix the structured callback channel's data initialization (Dmitry V. Levin), 1614 Fix memory corruption when xmlParseBalancedChunkMemoryInternal is called from xmlParseBalancedChunk (Rob Richards), 1615 Small fix for previous commit (Daniel Veillard), 1616 Fix a potential freeing error in XPath (Daniel Veillard), 1617 Fix a potential memory access error (Daniel Veillard), 1618 Reactivate the shared library versionning script (Daniel Veillard) 1619 </li> 1620 1621 <li>Improvements: 1622 use mingw C99 compatible functions {v}snprintf instead those from MSVC runtime (Roumen Petrov), 1623 New symbols added for the next release (Daniel Veillard), 1624 xmlTextReader bails too quickly on error (Andy Lutomirski), 1625 Use a hybrid allocation scheme in xmlNodeSetContent (Conrad Irwin), 1626 Use buffers when constructing string node lists. (Conrad Irwin), 1627 Add HTML parser support for HTML5 meta charset encoding declaration (Denis Pauk), 1628 wrong message for double hyphen in comment XML error (Bryan Henderson), 1629 Fix "make tst" to grab lzma lib too (Daniel Veillard), 1630 Add "whereis" command to xmllint shell (Ryan), 1631 Improve xmllint shell (Ryan), 1632 add function xmlTextReaderRelaxNGValidateCtxt() (Noam Postavsky), 1633 Add --system support to autogen.sh (Daniel Veillard), 1634 Add hash randomization to hash and dict structures (Daniel Veillard), 1635 included xzlib in dist (Anders F Bjorklund), 1636 move xz/lzma helpers to separate included files (Anders F Bjorklund), 1637 add generated devhelp files (Anders F Bjorklund), 1638 add XML_WITH_LZMA to api (Anders F Bjorklund), 1639 autogen.sh: Honor NOCONFIGURE environment variable (Colin Walters), 1640 Improve the error report on undefined REFs (Daniel Veillard), 1641 Add exception for new W3C PI xml-model (Daniel Veillard), 1642 Add options to ignore the internal encoding (Daniel Veillard), 1643 testapi: use the right type for the check (Stefan Kost), 1644 various: handle return values of write calls (Stefan Kost), 1645 testWriter: xmlTextWriterWriteFormatElement wants an int instead of a long int (Stefan Kost), 1646 runxmlconf: update to latest testsuite version (Stefan Kost), 1647 configure: add -Wno-long-long to CFLAGS (Stefan Kost), 1648 configure: support silent automake rules if possible (Stefan Kost), 1649 xmlmemory: add a cast as size_t has no portable printf modifier (Stefan Kost), 1650 __xmlRaiseError: remove redundant schannel initialization (Dmitry V. Levin), 1651 __xmlRaiseError: do cheap code check early (Dmitry V. Levin) 1652 </li> 1653 1654 <li>Cleanups: 1655 Cleanups before 2.8.0-rc2 (Daniel Veillard), 1656 Avoid an extra operation (Daniel Veillard), 1657 Remove vestigial de-ANSI-fication support. (Javier Jardón), 1658 autogen.sh: Fix typo (Javier Jardón), 1659 Do not use unsigned but unsigned int (Daniel Veillard), 1660 Remove two references to u_short (Daniel Veillard), 1661 Fix -Wempty-body warning from clang (Nico Weber), 1662 Cleanups of lzma support (Daniel Veillard), 1663 Augment the list of ignored files (Daniel Veillard), 1664 python: remove unused variable (Stefan Kost), 1665 python: flag two unused args (Stefan Kost), 1666 configure: acconfig.h is deprecated since autoconf-2.50 (Stefan Kost), 1667 xpath: remove unused variable (Stefan Kost) 1668 </li> 1669 </ul> 1670 <h3>2.7.8: Nov 4 2010</h3> 1671 <ul> 1672 <li> Features: 1673 480323 add code to plug in ICU converters by default (Giuseppe Iuculano), 1674 Add xmlSaveOption XML_SAVE_WSNONSIG (Adam Spragg) 1675 </li> 1676 <li> Documentation: 1677 Fix devhelp documentation installation (Mike Hommey), 1678 Fix web site encoding problems (Daniel Veillard), 1679 Fix a couple of typo in HTML parser error messages (Michael Day), 1680 Forgot to update the news page for 0.7.7 (Daniel Veillard) 1681 </li> 1682 <li> Portability: 1683 607273 Fix python detection on MSys/Windows (LRN), 1684 614087 Fix Socket API usage to allow Windows64 compilation (Ozkan Sezer), 1685 Fix compilation with Clang (Koop Mast), 1686 Fix Win32 build (Rob Richards) 1687 </li> 1688 <li> Bug Fixes: 1689 595789 fix a remaining potential Solaris problem (Daniel Veillard), 1690 617468 fix progressive HTML parsing with style using "'" (Denis Pauk), 1691 616478 Fix xmllint shell write command (Gwenn Kahz), 1692 614005 Possible erroneous HTML parsing on unterminated script (Pierre Belzile), 1693 627987 Fix XSD IDC errors in imported schemas (Jim Panetta), 1694 629325 XPath rounding errors first cleanup (Phil Shafer), 1695 630140 fix iso995x encoding error (Daniel Veillard), 1696 make sure htmlCtxtReset do reset the disableSAX field (Daniel Veillard), 1697 Fix a change of semantic on XPath preceding and following axis (Daniel Veillard), 1698 Fix a potential segfault due to weak symbols on pthreads (Mike Hommey), 1699 Fix a leak in XPath compilation (Daniel Veillard), 1700 Fix the semantic of XPath axis for namespace/attribute context nodes (Daniel Veillard), 1701 Avoid a descriptor leak in catalog loading code (Carlo Bramini), 1702 Fix a small bug in XPath evaluation code (Marius Wachtler), 1703 Fix handling of XML-1.0 XML namespace declaration (Daniel Veillard), 1704 Fix errors in XSD double validation check (Csaba Raduly), 1705 Fix handling of apos in URIs (Daniel Veillard), 1706 xmlTextReaderReadOuterXml should handle DTD (Rob Richards), 1707 Autogen.sh needs to create m4 directory (Rob Richards) 1708 </li> 1709 <li> Improvements: 1710 606592 update language ID parser to RFC 5646 (Daniel Veillard), 1711 Sort python generated stubs (Mike Hommey), 1712 Add an HTML parser option to avoid a default doctype (Daniel Veillard) 1713 </li> 1714 <li> Cleanups: 1715 618831 don't ship generated files in git (Adrian Bunk), 1716 Switch from the obsolete mkinstalldirs to AC_PROG_MKDIR_P (Adrian Bunk), 1717 Various cleanups on encoding handling (Daniel Veillard), 1718 Fix xmllint to use format=1 for default formatting (Adam Spragg), 1719 Force _xmlSaveCtxt.format to be 0 or 1 (Adam Spragg), 1720 Cleanup encoding pointer comparison (Nikolay Sivov), 1721 Small code cleanup on previous patch (Daniel Veillard) 1722 </li> 1723 </ul> 1724 <h3>2.7.7: Mar 15 2010</h3> 1725 <ul> 1726 <li> Improvements: 1727 Adding a --xpath option to xmllint (Daniel Veillard), 1728 Make HTML parser non-recursive (Eugene Pimenov) 1729 </li> 1730 <li> Portability: 1731 relaxng.c: cast to allow compilation with sun studio 11 (Ben Walton), 1732 Fix build failure on Sparc solaris (Roumen Petrov), 1733 use autoreconf in autogen.sh (Daniel Veillard), 1734 Fix build with mingw (Roumen Petrov), 1735 Upgrade some of the configure and autogen (Daniel Veillard), 1736 Fix relaxNG tests in runtest for Windows runtest.c: initialize ret (Rob Richards), 1737 Fix a const warning in xmlNodeSetBase (Martin Trappel), 1738 Fix python generator to not use deprecated xmllib (Daniel Veillard), 1739 Update some automake files (Daniel Veillard), 1740 598785 Fix nanohttp on Windows (spadix) 1741 </li> 1742 <li> Bug Fixes: 1743 libxml violates the zlib interface and crashes (Mark Adler), 1744 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1745 Fix missing win32 libraries in libxml-2.0.pc (Volker Grabsch), 1746 Fix detection of python linker flags (Daniel Macks), 1747 fix build error in libxml2/python (Paul Smith), 1748 ChunkParser: Incorrect decoding of small xml files (Raul Hudea), 1749 htmlCheckEncoding doesn't update input-end after shrink (Eugene Pimenov), 1750 Fix a missing #ifdef (Daniel Veillard), 1751 Fix encoding selection for xmlParseInNodeContext (Daniel Veillard), 1752 xmlPreviousElementSibling mistake (François Delyon), 1753 608773 add a missing check in xmlGROW (Daniel Veillard), 1754 Fix xmlParseInNodeContext for HTML content (Daniel Veillard), 1755 Fix lost namespace when copying node * tree.c: reconcile namespace if not found (Rob Richards), 1756 Fix some missing commas in HTML element lists (Eugene Pimenov), 1757 Correct variable type to unsigned (Nikolay Sivov), 1758 Recognize ID attribute in HTML without DOCTYPE (Daniel Veillard), 1759 Fix memory leak in xmlXPathEvalExpression() (Martin), 1760 Fix an init bug in global.c (Kai Henning), 1761 Fix xmlNodeSetBase() comment (Daniel Veillard), 1762 Fix broken escape behaviour in regexp ranges (Daniel Veillard), 1763 Don't give default HTML boolean attribute values in parser (Daniel Veillard), 1764 xmlCtxtResetLastError should reset ctxt-errNo (Daniel Veillard) 1765 </li> 1766 <li> Cleanups: 1767 Cleanup a couple of weirdness in HTML parser (Eugene Pimenov) 1768 </li> 1769 </ul> 1770 <h3>2.7.6: Oct 6 2009</h3> 1771 <ul> 1772 <li> Bug Fixes: 1773 Restore thread support in default configuration (Andrew W. Nosenko), 1774 URI with no path parsing problem (Daniel Veillard), 1775 Minor patch for conditional defines in threads.c (Eric Zurcher) 1776 </li> 1777 </ul> 1778 <h3>2.7.5: Sep 24 2009</h3> 1779 <ul> 1780 <li> Bug Fixes: 1781 Restore behavior of --with-threads without argument (Andrew W. Nosenko), 1782 Fix memory leak when doc is NULL (Rob Richards), 1783 595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard), 1784 Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard), 1785 Fix a parsing problem with little data at startup (Daniel Veillard), 1786 link python module with python library (Frederic Crozat), 1787 594874 Forgot an fclose in xmllint (Daniel Veillard) 1788 </li> 1789 <li> Cleanup: 1790 Adding symbols.xml to EXTRA_DIST (Daniel Veillard) 1791 </li> 1792 </ul> 1793 <h3>2.7.4: Sep 10 2009</h3> 1794 <ul> 1795 <li>Improvements: 1796 Switch to GIT (GNOME), 1797 Add symbol versioning to libxml2 shared libs (Daniel Veillard) 1798 </li> 1799 <li>Portability: 1800 593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard), 1801 594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard), 1802 Fix Windows build * relaxng.c: fix windows build (Rob Richards), 1803 Fix the globals.h to use XMLPUBFUN (Paul Smith), 1804 Problem with extern extern in header (Daniel Veillard), 1805 Add -lnetwork for compiling on Haiku (Scott McCreary), 1806 Runtest portability patch for Solaris (Tim Rice), 1807 Small patch to accomodate the Haiku OS (Scott McCreary), 1808 584605 package VxWorks folder in the distribution (Daniel Veillard), 1809 574017 Realloc too expensive on most platform (Daniel Veillard), 1810 Fix windows build (Rob Richards), 1811 545579 doesn't compile without schema support (Daniel Veillard), 1812 xmllint use xmlGetNodePath when not compiled in (Daniel Veillard), 1813 Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard), 1814 Allow to select the threading system on Windows (LRN), 1815 Fix Solaris binary links, cleanups (Daniel Veillard), 1816 Bug 571059 – MSVC doesn't work with the bakefile (Intron), 1817 fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey), 1818 fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher) 1819 </li> 1820 <li>Documentation: 1821 544910 typo: "renciliateNs" (Leonid Evdokimov), 1822 Add VxWorks to list of OSes (Daniel Veillard), 1823 Regenerate the documentation and update for git (Daniel Veillard), 1824 560524 ¿ xmlTextReaderLocalName description (Daniel Veillard), 1825 Added sponsoring by AOE media for the server (Daniel Veillard), 1826 updated URLs for GNOME (Vincent Lefevre), 1827 more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard) 1828 </li> 1829 <li>Bug fixes: 1830 594514 memory leaks - duplicate initialization (MOD), 1831 Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard), 1832 492317 Fix Relax-NG validation problems (Daniel Veillard), 1833 558452 fight with reg test and error report (Daniel Veillard), 1834 558452 RNG compilation of optional multiple child (Daniel Veillard), 1835 579746 XSD validation not correct / nilable groups (Daniel Veillard), 1836 502960 provide namespace stack when parsing entity (Daniel Veillard), 1837 566012 part 2 fix regresion tests and push mode (Daniel Veillard), 1838 566012 autodetected encoding and encoding conflict (Daniel Veillard), 1839 584220 xpointer(/) and xinclude problems (Daniel Veillard), 1840 587663 Incorrect Attribute-Value Normalization (Daniel Veillard), 1841 444994 HTML chunked failure for attribute with <> (Daniel Veillard), 1842 Fix end of buffer char being split in XML parser (Daniel Veillard), 1843 Non ASCII character may be split at buffer end (Adiel Mittmann), 1844 440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel), 1845 572129 speed up parsing of large HTML text nodes (Markus Kull), 1846 Fix HTML parsing with 0 character in CDATA (Daniel Veillard), 1847 Fix SetGenericErrorFunc and SetStructured clash (Wang Lam), 1848 566012 Incomplete EBCDIC parsing support (Martin Kogler), 1849 541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard), 1850 541237 error correcting missing end tags in HTML (Daniel Veillard), 1851 583439 missing line numbers in push mode (Daniel Veillard), 1852 587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard), 1853 559501 avoid select and use poll for nanohttp (Raphael Prevost), 1854 559410 - Regexp bug on (...)? constructs (Daniel Veillard), 1855 Fix a small problem on previous HTML parser patch (Daniel Veillard), 1856 592430 - HTML parser runs into endless loop (Daniel Veillard), 1857 447899 potential double free in xmlFreeTextReader (Daniel Veillard), 1858 446613 small validation bug mixed content with NS (Daniel Veillard), 1859 Fix the problem of revalidating a doc with RNG (Daniel Veillard), 1860 Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer), 1861 512131 refs from externalRef part need to be added (Daniel Veillard), 1862 512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard), 1863 588441 allow '.' in HTML Names even if invalid (Daniel Veillard), 1864 582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard), 1865 579317 Try to find the HTML encoding information (Daniel Veillard), 1866 575875 don't output charset=html (Daniel Veillard), 1867 571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard), 1868 570702 fix a bug in regexp determinism checking (Daniel Veillard), 1869 567619 xmlValidateNotationUse missing param test (Daniel Veillard), 1870 574393 ¿ utf-8 filename magic for compressed files (Hans Breuer), 1871 Fix a couple of problems in the parser (Daniel Veillard), 1872 585505 ¿ Document ids and refs populated by XSD (Wayne Jensen), 1873 582906 XSD validating multiple imports of the same schema (Jason Childs), 1874 Bug 582887 ¿ problems validating complex schemas (Jason Childs), 1875 Bug 579729 ¿ fix XSD schemas parsing crash (Miroslav Bajtos), 1876 576368 ¿ htmlChunkParser with special attributes (Jiri Netolicky), 1877 Bug 565747 ¿ relax anyURI data character checking (Vincent Lefevre), 1878 Preserve attributes of include start on tree copy (Petr Pajas), 1879 Skip silently unrecognized XPointer schemes (Jakub Wilk), 1880 Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard), 1881 potential NULL dereference on non-glibc (Jim Meyering), 1882 Fix an XSD validation crash (Daniel Veillard), 1883 Fix a regression in streaming entities support (Daniel Veillard), 1884 Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin), 1885 Aleksey Sanin support for c14n 1.1 (Aleksey Sanin), 1886 reader bug fix with entities (Daniel Veillard), 1887 use options from current parser ctxt for external entities (Rob Richards), 1888 581612 use %s to printf strings (Christian Persch), 1889 584605 change the threading initialization sequence (Igor Novoseltsev), 1890 580705 keep line numbers in HTML parser (Aaron Patterson), 1891 581803 broken HTML table attributes init (Roland Steiner), 1892 do not set error code in xmlNsWarn (Rob Richards), 1893 564217 fix structured error handling problems, 1894 reuse options from current parser for entities (Rob Richards), 1895 xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard), 1896 add a missing check in xmlAddSibling (Kris Breuker), 1897 avoid leaks on errors (Jinmei Tatuya) 1898 </li> 1899 <li>Cleanup: 1900 Chasing dead assignments reported by clang-scan (Daniel Veillard), 1901 A few more safety cleanup raised by scan (Daniel Veillard), 1902 Fixing assorted potential problems raised by scan (Daniel Veillard), 1903 Potential uninitialized arguments raised by scan (Daniel Veillard), 1904 Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard), 1905 Remove a pedantic warning (Daniel Veillard), 1906 555833 always use rm -f in uninstall-local (Daniel Veillard), 1907 542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard), 1908 Autoregenerate libxml2.syms automated checkings (Daniel Veillard), 1909 Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard), 1910 Both args of xmlStrcasestr are const (Daniel Veillard), 1911 hide the nbParse* variables used for debugging (Mike Hommey), 1912 570806 changed include of config.h (William M. Brack), 1913 cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya) 1914 </li> 1915 </ul> 1916 <h3>2.7.3: Jan 18 2009</h3> 1917 <ul> 1918 <li>Build fix: fix build when HTML support is not included.</li> 1919 <li>Bug fixes: avoid memory overflow in gigantic text nodes, 1920 indentation problem on the writed (Rob Richards), 1921 xmlAddChildList pointer problem (Rob Richards and Kevin Milburn), 1922 xmlAddChild problem with attribute (Rob Richards and Kris Breuker), 1923 avoid a memory leak in an edge case (Daniel Zimmermann), 1924 deallocate some pthread data (Alex Ott).</li> 1925 <li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk), 1926 limit text nodes to 10MB max by default, add element traversal 1927 APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards), 1928 add gcc malloc checking (Marcus Meissner), add gcc printf like functions 1929 parameters checking (Marcus Meissner).</li> 1930 </ul> 1931 <h3>2.7.2: Oct 3 2008</h3> 1932 <ul> 1933 <li>Portability fix: fix solaris compilation problem, fix compilation 1934 if XPath is not configured in</li> 1935 <li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour 1936 when saving an HTML doc with an xml dump function, HTML UTF-8 parsing 1937 bug, fix reader custom error handlers (Riccardo Scussat) 1938 <li>Improvement: xmlSave options for more flexibility to save as 1939 XML/HTML/XHTML, handle leading BOM in HTML documents</li> 1940 </ul> 1941 1942 <h3>2.7.1: Sep 1 2008</h3> 1943 <ul> 1944 <li>Portability fix: Borland C fix (Moritz Both)</li> 1945 <li>Bug fixes: python serialization wrappers, XPath QName corner 1946 case handking and leaks (Martin)</li> 1947 <li>Improvement: extend the xmlSave to handle HTML documents and trees</li> 1948 <li>Cleanup: python serialization wrappers</li> 1949 </ul> 1950 1951 <h3>2.7.0: Aug 30 2008</h3> 1952 <ul> 1953 <li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and 1954 xmlParserCleanup docs</li> 1955 <li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC 1956 porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg), 1957 non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Färber) 1958 </li> 1959 <li>Bug fixes: various realloc problems (Ashwin), potential double-free 1960 (Ashwin), regexp crash, icrash with invalid whitespace facets (Rob 1961 Richards), pattern fix when streaming (William Brack), various XML 1962 parsing and validation fixes based on the W3C regression tests, reader 1963 tree skipping function fix (Ashwin), Schemas regexps escaping fix 1964 (Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown 1965 when encoder cant serialize characters on output</li> 1966 <li>Code cleanup: compilation fix without the reader, without the output 1967 (Robert Schwebel), python whitespace (Martin), many space/tabs cleanups, 1968 serious cleanup of the entity handling code</li> 1969 <li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags 1970 for old versions, switch URI parsing to RFC 3986, 1971 add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer), 1972 new hashing functions for dictionnaries (based on Stefan Behnel work), 1973 improve handling of misplaced html/head/body in HTML parser, better 1974 regression test tools and code coverage display, better algorithms 1975 to detect various versions of the billion laughts attacks, make 1976 arbitrary parser limits avoidable as a parser option</li> 1977 </ul> 1978 <h3>2.6.32: Apr 8 2008</h3> 1979 <ul> 1980 <li>Documentation: returning heap memory to kernel (Wolfram Sang), 1981 trying to clarify xmlCleanupParser() use, xmlXPathContext improvement 1982 (Jack Jansen), improve the *Recover* functions documentation, 1983 XmlNodeType doc link fix (Martijn Arts)</li> 1984 <li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with 1985 paths starting with // (Petr Sumbera), streaming XSD validation callback 1986 patches (Ashwin), fix redirection on port other than 80 (William Brack), 1987 SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan), 1988 regexp bug with '.' (Andrew Tosh), flush the writer at the end of the 1989 document (Alfred Mickautsch), output I/O bug fix (William Brack), 1990 writer CDATA output after a text node (Alex Khesin), UTF-16 encoding 1991 detection (William Brack), fix handling of empty CDATA nodes for Safari 1992 team, python binding problem with namespace nodes, improve HTML parsing 1993 (Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily 1994 Chekalkin), XSD test crash, weird system parameter entity parsing problem, 1995 allow save to file:///X:/ windows paths, various attribute normalisation 1996 problems, externalSubsetSplit fix (Ashwin), attribute redefinition in 1997 the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many 1998 out of memory handling fixes (Ashwin), XPath out of memory handling fixes 1999 (Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding 2000 conversion buffer size (Christian Fruth), problems with EatName 2001 functions on memory errors, BOM handling in external parsed entities 2002 (Mark Rowe)</li> 2003 <li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless 2004 mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo 2005 Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need 2006 a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon), 2007 cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build 2008 fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards), 2009 duplicate code removal (Ashwin), missing malloc test and error reports 2010 (Ashwin), VMS makefile fix (Tycho Hilhorst)</li> 2011 <li>improvements: better plug of schematron in the normal error handling 2012 (Tobias Minich)</li> 2013 </ul> 2014 2015 <h3>2.6.31: Jan 11 2008</h3> 2016 <ul> 2017 <li>Security fix: missing of checks in UTF-8 parsing</li> 2018 <li>Bug fixes: regexp bug, dump attribute from XHTML document, fix 2019 xmlFree(NULL) to not crash in debug mode, Schematron parsing crash 2020 (Rob Richards), global lock free on Windows (Marc-Antoine Ruel), 2021 XSD crash due to double free (Rob Richards), indentation fix in 2022 xmlTextWriterFullEndElement (Felipe Pena), error in attribute type 2023 parsing if attribute redeclared, avoid crash in hash list scanner if 2024 deleting elements, column counter bug fix (Christian Schmidt), 2025 HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib 2026 output from xml2-config (Fred Crozat), avoid an xmllint crash 2027 (Stefan Kost), don't stop HTML parsing on out of range chars. 2028 </li> 2029 <li>Code cleanup: fix open() call third argument, regexp cut'n paste 2030 copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder), 2031 some make distcheck realted fixes (John Carr)</li> 2032 <li>Improvements: HTTP Header: includes port number (William Brack), 2033 testURI --debug option, </li> 2034 </ul> 2035 <h3>2.6.30: Aug 23 2007</h3> 2036 <ul> 2037 <li>Portability: Solaris crash on error handling, windows path fixes 2038 (Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li> 2039 <li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when 2040 reusing a writer for a new document (Dodji Seketeli), Schemas 2041 xsi:nil handling patch (Frank Gross), relative URI build problem 2042 (Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment 2043 detection bug, fix disparity with xmlSAXUserParseMemory, automata 2044 generation for complex regexp counts problems, Schemas IDC import 2045 problems (Frank Gross), xpath predicate evailation error handling 2046 (William Brack)</li> 2047 </ul> 2048 <h3>2.6.29: Jun 12 2007</h3> 2049 <ul> 2050 <li>Portability: patches from Andreas Stricke for WinCEi, 2051 fix compilation warnings (William Brack), avoid warnings on Apple OS/X 2052 (Wendy Doyle and Mark Rowe), Windows compilation and threading 2053 improvements (Rob Richards), compilation against old Python versions, 2054 new GNU tar changes (Ryan Hill)</li> 2055 <li>Documentation: xmlURIUnescapeString comment, </li> 2056 <li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind' 2057 flag fix (Richard Jones), regexp interpretation of \, 2058 htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in 2059 typo (Bjorn Reese), entity content failure, xmlListAppend() fix 2060 (Georges-André Silber), XPath number serialization (William Brack), 2061 nanohttp gzipped stream fix (William Brack and Alex Cornejo), 2062 xmlCharEncFirstLine typo (Mark Rowe), uri bug (François Delyon), 2063 XPath string value of PI nodes (William Brack), XPath node set 2064 sorting bugs (William Brack), avoid outputting namespace decl 2065 dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding 2066 error handling, recustion on next in catalogs, fix a Relax-NG crash, 2067 workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes, 2068 invalid character in attribute detection bug, big comments before 2069 internal subset streaming bug, HTML parsing of attributes with : in 2070 the name, IDness of name in HTML (Dagfinn I. MannsÃ¥ker) </li> 2071 <li>Improvement: keep URI query parts in raw form (Richard Jones), 2072 embed tag support in HTML (Michael Day) </li> 2073 </ul> 2074 2075 <h3>2.6.28: Apr 17 2007</h3> 2076 <ul> 2077 <li>Documentation: comment fixes (Markus Keim), xpath comments fixes too 2078 (James Dennett)</li> 2079 <li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage 2080 (Usamah Malik), various regexp bug fixes (DV and William), path conversion 2081 on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath 2082 principal node of axis bug, HTML serialization of some codepoint 2083 (Steven Rainwater), user data propagation in XInclude (Michael Day), 2084 standalone and XML decl detection (Michael Day), Python id ouptut 2085 for some id, fix the big python string memory leak, URI parsing fixes 2086 (Stéphane Bidoul and William), long comments parsing bug (William), 2087 concurrent threads initialization (Ted Phelps), invalid char 2088 in text XInclude (William), XPath memory leak (William), tab in 2089 python problems (Andreas Hanke), XPath node comparison error 2090 (Oleg Paraschenko), cleanup patch for reader (Julien Reichel), 2091 XML Schemas attribute group (William), HTML parsing problem (William), 2092 fix char 0x2d in regexps (William), regexp quantifier range with 2093 min occurs of 0 (William), HTML script/style parsing (Mike Day)</li> 2094 <li>Improvement: make xmlTextReaderSetup() public</li> 2095 <li>Compilation and postability: fix a missing include problem (William), 2096 __ss_familly on AIX again (Björn Wiberg), compilation without zlib 2097 (Michael Day), catalog patch for Win32 (Christian Ehrlicher), 2098 Windows CE fixes (Andreas Stricke)</li> 2099 <li>Various CVS to SVN infrastructure changes</li> 2100 </ul> 2101 <h3>2.6.27: Oct 25 2006</h3> 2102 <ul> 2103 <li>Portability fixes: file names on windows (Roland Schwingel, 2104 Emelyanov Alexey), windows compile fixup (Rob Richards), 2105 AIX iconv() is apparently case sensitive</li> 2106 <li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization 2107 (Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node 2108 equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest 2109 improvememt (Kasimier), expose if library was compiled with zlib 2110 support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs 2111 (Kasimier), xmlTextConcat should work with comments and PIs (Rob 2112 Richards), export htmlNewParserCtxt needed by Michael Day, refactoring 2113 of catalog entity loaders (Michael Day), add XPointer support to 2114 python bindings (Ross Reedstrom, Brian West and Stefan Anca), 2115 try to sort out most file path to URI conversions and xmlPathToUri, 2116 add --html --memory case to xmllint</li> 2117 <li>building fix: fix --with-minimum (Felipe Contreras), VMS fix, 2118 const'ification of HTML parser structures (Matthias Clasen), 2119 portability fix (Emelyanov Alexey), wget autodetection (Peter 2120 Breitenlohner), remove the build path recorded in the python 2121 shared module, separate library flags for shared and static builds 2122 (Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix 2123 --with-minimum --with-schemas builds</li> 2124 <li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and 2125 attribute (Kasimier), crash when using the recover mode, 2126 xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier), 2127 missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes 2128 (Kasimier), warning on entities processing, XHTML script and style 2129 serialization (Kasimier), python generator for long types, bug in 2130 xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate 2131 allocation bug (Marton Illes), error message end of line (Rob Richards), 2132 fix attribute serialization in writer (Rob Richards), PHP4 DTD validation 2133 crasher, parser safety patch (Ben Darnell), _private context propagation 2134 when parsing entities (with Michael Day), fix entities behaviour when 2135 using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity 2136 context, arg error in SAX callback (Mike Hommey), fix mixed-content 2137 autodetect when using --noblanks, fix xmlIOParseDTD error handling, 2138 fix bug in xmlSplitQName on special Names, fix Relax-NG element content 2139 validation bug, fix xmlReconciliateNs bug, fix potential attribute 2140 XML parsing bug, fix line/column accounting in XML parser, chunking bug 2141 in the HTML parser on script, try to detect obviously buggy HTML 2142 meta encoding indications, bugs with encoding BOM and xmlSaveDoc, 2143 HTML entities in attributes parsing, HTML minimized attribute values, 2144 htmlReadDoc and htmlReadIO were broken, error handling bug in 2145 xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in 2146 htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer), 2147 bug on misformed SSD regexps (Christopher Boumenot) 2148 </li> 2149 <li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik), 2150 fix xmlXPathCastToString documentation, improve man pages for 2151 xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few 2152 functions</li> 2153 </ul> 2154 <h3>2.6.26: Jun 6 2006</h3> 2155 <ul> 2156 <li>portability fixes: Python detection (Joseph Sacco), compilation 2157 error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li> 2158 <li>bug fixes: encoding buffer problem, mix of code and data in 2159 xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik), 2160 variousXSD validation fixes (Kasimier), memory leak in pattern (Rob 2161 Richards andKasimier), attribute with colon in name (Rob Richards), XPath 2162 leak inerror reporting (Aleksey Sanin), XInclude text include of 2163 selfdocument.</li> 2164 <li>improvements: Xpath optimizations (Kasimier), XPath object 2165 cache(Kasimier)</li> 2166 </ul> 2167 2168 <h3>2.6.25: Jun 6 2006:</h3> 2169 2170 <p>Do not use or package 2.6.25</p> 2171 2172 <h3>2.6.24: Apr 28 2006</h3> 2173 <ul> 2174 <li>Portability fixes: configure on Windows, testapi compile on windows 2175 (Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher), 2176 HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1 2177 cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on 2178 Windows (Roland Schwingel). 2179 </li> 2180 <li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier 2181 Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li> 2182 <li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext() 2183 on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming 2184 bug, xmlParseComment (with William Brack), regexp bug fixes (DV & 2185 Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier), 2186 one Relax-NG interleave bug, xmllint --path and --valid, 2187 XSD bugfixes (Kasimier), remove debug 2188 left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole), 2189 xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large 2190 number of cleanups and small fixes based on Coverity reports, bug 2191 in character ranges, Unicode tables const (Aivars Kalvans), schemas 2192 fix (Stefan Kost), xmlRelaxNGParse error deallocation, 2193 xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed 2194 code point, ixmllint --nonet to never reach the net (Gary Coady), 2195 line break in writer after end PI (Jason Viers). </li> 2196 <li>Documentation: man pages updates and cleanups (Daniel Leidert).</li> 2197 <li>New features: Relax NG structure error handlers.</li> 2198 </ul> 2199 2200 <h3>2.6.23: Jan 5 2006</h3> 2201 <ul> 2202 <li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows 2203 (Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas), 2204 --with-minimum compilation fixes (William Brack), error case handling fix 2205 on Solaris (Albert Chin), don't use 'list' as parameter name reported by 2206 Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin), 2207 MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick 2208 Jones),</li> 2209 <li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose 2210 (Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring 2211 parsing code (Bjorn Reese)</li> 2212 <li>bug fixes: xmlBuildRelativeURI and empty path (William Brack), 2213 combinatory explosion and performances in regexp code, leak in 2214 xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo 2215 Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik), 2216 XPath pattern based evaluation bugs (DV & Kasimier), 2217 xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in 2218 xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of 2219 vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF 2220 split problem (William), issues with non-namespaced attributes in 2221 xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards), 2222 HTML parsing of script, Python must not output to stdout (Nic Ferrier), 2223 exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype 2224 totalDigits bug (Kasimier Buchcik), error handling when writing to an 2225 xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi 2226 Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix 2227 XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier), 2228 fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml 2229 (Gary Coady), regexp bug affecting schemas (Kasimier), configuration of 2230 runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs 2231 (Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair), 2232 compilation and build fixes (Michael Day), removed dependancies on 2233 xmlSchemaValidError (Kasimier), bug with <xml:foo/>, more XPath 2234 pattern based evaluation fixes (Kasimier)</li> 2235 <li>improvements: XSD Schemas redefinitions/restrictions (Kasimier 2236 Buchcik), node copy checks and fix for attribute (Rob Richards), counted 2237 transition bug in regexps, ctxt->standalone = -2 to indicate no 2238 standalone attribute was found, add xmlSchemaSetParserStructuredErrors() 2239 (Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API 2240 (Kasimier), handle gzipped HTTP resources (Gary Coady), add 2241 htmlDocDumpMemoryFormat. (Rob Richards),</li> 2242 <li>documentation: typo (Michael Day), libxml man page (Albert Chin), save 2243 function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li> 2244 </ul> 2245 2246 <h3>2.6.22: Sep 12 2005</h3> 2247 <ul> 2248 <li>build fixes: compile without schematron (Stéphane Bidoul)</li> 2249 <li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i, 2250 CDATA push parser bug, xmlElemDump problem with XHTML1 doc, 2251 XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some 2252 output formatting for meta element (Rob Richards), script and style 2253 XHTML1 serialization (David Madore), Attribute derivation fixups in XSD 2254 (Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li> 2255 <li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add 2256 XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for 2257 derive (Kasimier Buchcik).</li> 2258 <li>documentation: generation of gtk-doc like docs, integration with 2259 devhelp.</li> 2260 </ul> 2261 2262 <h3>2.6.21: Sep 4 2005</h3> 2263 <ul> 2264 <li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling 2265 convention problems on Windows (Marcus Boerger), cleanups based on Linus' 2266 sparse tool, update of win32/configure.js (Rob Richards), remove warnings 2267 on Windows(Marcus Boerger), compilation without SAX1, detection of the 2268 Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko), 2269 compilation/link with threads and old gcc, compile problem by C370 on 2270 Z/OS,</li> 2271 <li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8 2272 bug (Jiri Netolicky), XPath NaN compare bug (William Brack), 2273 htmlParseScript potential bug, Schemas regexp handling of spaces, Base64 2274 Schemas comparisons NIST passes, automata build error xsd:all, 2275 xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas 2276 foreign namespaces handling, XML Schemas facet comparison (Kupriyanov 2277 Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml: 2278 namespace ahndling in Schemas (Kasimier), empty model group in Schemas 2279 (Kasimier), wilcard in Schemas (Kasimier), URI composition (William), 2280 xs:anyType in Schemas (Kasimier), Python resolver emmitting error 2281 messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to 2282 fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob 2283 Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8 2284 serialization, streaming XPath, Schemas determinism detection problem, 2285 XInclude bug, Schemas context type (Dean Hill), validation fix (Derek 2286 Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas 2287 type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling, 2288 xmlGetLineNo fixes, bug on entities handling, entity name extraction in 2289 error handling with XInclude, text nodes in HTML body tags (Gary Coady), 2290 xml:id and IDness at the treee level fixes, XPath streaming patterns 2291 bugs.</li> 2292 <li>improvements: structured interfaces for schemas and RNG error reports 2293 (Marcus Boerger), optimization of the char data inner loop parsing 2294 (thanks to Behdad Esfahbod for the idea), schematron validation though 2295 not finished yet, xmlSaveOption to omit XML declaration, keyref match 2296 error reports (Kasimier), formal expression handling code not plugged 2297 yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option 2298 for text nodes allocation.</li> 2299 <li>documentation: xmllint man page had --nonet duplicated</li> 2300 </ul> 2301 2302 <h3>2.6.20: Jul 10 2005</h3> 2303 <ul> 2304 <li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor 2305 Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and 2306 andriy@google.com), use gcc weak references to pthread to avoid the 2307 pthread dependancy on Linux, compilation problem (Steve Nairn), compiling 2308 of subset (Morten Welinder), IPv6/ss_family compilation (William Brack), 2309 compilation when disabling parts of the library, standalone test 2310 distribution.</li> 2311 <li>bug fixes: bug in lang(), memory cleanup on errors (William Brack), 2312 HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer 2313 overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup 2314 (Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch 2315 (Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup 2316 on XInclude (William), pattern fixes (William), attribute bug in 2317 exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob 2318 Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type 2319 QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug 2320 (Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob 2321 Richards), a small RelaxNG leak, HTML parsing in push mode bug (James 2322 Bursa), failure to detect UTF-8 parsing bugs in CDATA sections, 2323 areBlanks() heuristic failure, duplicate attributes in DTD bug 2324 (William).</li> 2325 <li>improvements: lot of work on Schemas by Kasimier Buchcik both on 2326 conformance and streaming, Schemas validation messages (Kasimier Buchcik, 2327 Matthew Burgess), namespace removal at the python level (Brent 2328 Hendricks), Update to new Schemas regression tests from W3C/Nist 2329 (Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of 2330 xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert), 2331 standalone test framework and programs, new DOM import APIs 2332 xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and 2333 xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and 2334 Schemas regression tests, xmlStopParser() available in pull mode too, 2335 ienhancement to xmllint --shell namespaces support, Windows port of the 2336 standalone testing tools (Kasimier and William), 2337 xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX 2338 Schemas APIs, Schemas xmlReader support.</li> 2339 </ul> 2340 2341 <h3>2.6.19: Apr 02 2005</h3> 2342 <ul> 2343 <li>build fixes: drop .la from RPMs, --with-minimum build fix (William 2344 Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX 2345 5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on 2346 Linux/ELF/gcc4</li> 2347 <li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return 2348 code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY 2349 Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin), 2350 segfault in Schemas (Kasimier Buchcik), Schemas attribute validation 2351 (Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards), 2352 HTML serialization of name attribute on a elements, Python error handlers 2353 leaks and improvement (Brent Hendricks), uninitialized variable in 2354 encoding code, Relax-NG validation bug, potential crash if 2355 gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures, 2356 switched back to assuming UTF-8 in case no encoding is given at 2357 serialization time</li> 2358 <li>improvements: lot of work on Schemas by Kasimier Buchcik on facets 2359 checking and also mixed handling.</li> 2360 <li></li> 2361 </ul> 2362 2363 <h3>2.6.18: Mar 13 2005</h3> 2364 <ul> 2365 <li>build fixes: warnings (Peter Breitenlohner), testapi.c generation, 2366 Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed), 2367 some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li> 2368 <li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and 2369 xmlreader stopping on non-fatal errors, thread support for dictionnaries 2370 reference counting (Gary Coady), internal subset and push problem, URL 2371 saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths 2372 fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix 2373 (Mike Hommey), warning should not count as error (William Brack), 2374 xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup 2375 FTP and HTTP code to reuse the uri parsing and IPv6 (William), 2376 xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being 2377 empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows 2378 (Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent 2379 Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug 2380 (Rob Richards), Schemas decimal type fixes (William Brack), 2381 xmlByteConsumed static buffer (Ben Maurer).</li> 2382 <li>improvement: speedup parsing comments and DTDs, dictionary support for 2383 hash tables, Schemas Identity constraints (Kasimier), streaming XPath 2384 subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical 2385 values handling (Kasimier), add xmlTextReaderByteConsumed (Aron 2386 Stansvik),</li> 2387 <li>Documentation: Wiki support (Joel Reed)</li> 2388 </ul> 2389 2390 <h3>2.6.17: Jan 16 2005</h3> 2391 <ul> 2392 <li>build fixes: Windows, warnings removal (William Brack), 2393 maintainer-clean dependency(William), build in a different directory 2394 (William), fixing --with-minimum configure build (William), BeOS build 2395 (Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan 2396 McNichol)</li> 2397 <li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile() 2398 to use the catalog(s), loop on output (William Brack), XPath memory leak, 2399 ID deallocation problem (Steve Shepard), debugDumpNode crash (William), 2400 warning not using error callback (William), xmlStopParser bug (William), 2401 UTF-16 with BOM on DTDs (William), namespace bug on empty elements in 2402 push mode (Rob Richards), line and col computations fixups (Aleksey 2403 Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William), 2404 patterns with too many steps, bug in RNG choice optimization, line number 2405 sometimes missing.</li> 2406 <li>improvements: XSD Schemas (Kasimier Buchcik), python generator 2407 (William), xmlUTF8Strpos speedup (William), unicode Python strings 2408 (William), XSD error reports (Kasimier Buchcik), Python __str__ call 2409 serialize().</li> 2410 <li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for 2411 the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel 2412 Reed), error extraction API from regexps, new XMLSave option for format 2413 (Phil Shafer)</li> 2414 <li>documentation: site improvement (John Fleck), FAQ entries 2415 (William).</li> 2416 </ul> 2417 2418 <h3>2.6.16: Nov 10 2004</h3> 2419 <ul> 2420 <li>general hardening and bug fixing crossing all the API based on new 2421 automated regression testing</li> 2422 <li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li> 2423 <li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding 2424 conversion functions return values, UTF-8 bug affecting XPath reported by 2425 Markus Bertheau, catalog problem with NULL entries (William Brack)</li> 2426 <li>documentation: fix to xmllint man page, some API function descritpion 2427 were updated.</li> 2428 <li>improvements: DTD validation APIs provided at the Python level (Brent 2429 Hendricks)</li> 2430 </ul> 2431 2432 <h3>2.6.15: Oct 27 2004</h3> 2433 <ul> 2434 <li>security fixes on the nanoftp and nanohttp modules</li> 2435 <li>build fixes: xmllint detection bug in configure, building outside the 2436 source tree (Thomas Fitzsimmons)</li> 2437 <li>bug fixes: HTML parser on broken ASCII chars in names (William), Python 2438 paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William), 2439 saving to python file objects (Malcolm Tredinnick), DTD lookup fix 2440 (Malcolm), save back <group> in catalogs (William), tree build 2441 fixes (DV and Rob Richards), Schemas memory bug, structured error handler 2442 on Python 64bits, thread local memory deallocation, memory leak reported 2443 by Volker Roth, xmlValidateDtd in the presence of an internal subset, 2444 entities and _private problem (William), xmlBuildRelativeURI error 2445 (William).</li> 2446 <li>improvements: better XInclude error reports (William), tree debugging 2447 module and tests, convenience functions at the Reader API (Graham 2448 Bennett), add support for PI in the HTML parser.</li> 2449 </ul> 2450 2451 <h3>2.6.14: Sep 29 2004</h3> 2452 <ul> 2453 <li>build fixes: configure paths for xmllint and xsltproc, compilation 2454 without HTML parser, compilation warning cleanups (William Brack & 2455 Malcolm Tredinnick), VMS makefile update (Craig Berry),</li> 2456 <li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier 2457 Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x 2458 transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes 2459 (Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc), 2460 handling of failed realloc(), out of bound array adressing in Schemas 2461 date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS 2462 E20 validation fix (Malcolm),</li> 2463 <li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add 2464 xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy 2465 (Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm 2466 Tredinnick), Schemas support for xsi:schemaLocation, 2467 xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li> 2468 </ul> 2469 2470 <h3>2.6.13: Aug 31 2004</h3> 2471 <ul> 2472 <li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc, 2473 Solaris compiler warning, fixing RPM BuildRequires,</li> 2474 <li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs 2475 (Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack 2476 and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace 2477 problem (William), Schemas hexbinary empty values, encoding error could 2478 genrate a serialization loop.</li> 2479 <li>Improvements: Schemas validity improvements (Kasimier), added --path 2480 and --load-trace options to xmllint</li> 2481 <li>documentation: tutorial update (John Fleck)</li> 2482 </ul> 2483 2484 <h3>2.6.12: Aug 22 2004</h3> 2485 <ul> 2486 <li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter 2487 Breitenlohner), perl path lookup (William), diff on Solaris (Albert 2488 Chin), some 64bits cleanups.</li> 2489 <li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes 2490 (William), wrapper generator fixes (William), Cygwin support (Gerrit P. 2491 Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support 2492 (Torkel Lyng)</li> 2493 <li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li> 2494 <li>fixes: RVT fixes (William), XPath context resets bug (William), memory 2495 debug (Steve Hay), catalog white space handling (Peter Breitenlohner), 2496 xmlReader state after attribute reading (William), structured error 2497 handler (William), XInclude generated xml:base fixup (William), Windows 2498 memory reallocation problem (Steve Hay), Out of Memory conditions 2499 handling (William and Olivier Andrieu), htmlNewDoc() charset bug, 2500 htmlReadMemory init (William), a posteriori validation DTD base 2501 (William), notations serialization missing, xmlGetNodePath (Dodji), 2502 xmlCheckUTF8 (Diego Tartara), missing line numbers on entity 2503 (William)</li> 2504 <li>improvements: DocBook catalog build scrip (William), xmlcatalog tool 2505 (Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey), 2506 xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude 2507 to not generate start/end nodes, extend xmllint --version to include CVS 2508 tag (William)</li> 2509 <li>documentation: web pages fixes, validity API docs fixes (William) 2510 schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li> 2511 </ul> 2512 2513 <h3>2.6.11: July 5 2004</h3> 2514 <ul> 2515 <li>Schemas: a lot of changes and improvements by Kasimier Buchcik for 2516 attributes, namespaces and simple types.</li> 2517 <li>build fixes: --with-minimum (William Brack), some gcc cleanup 2518 (William), --with-thread-alloc (William)</li> 2519 <li>portability: Windows binary package change (Igor Zlatkovic), Catalog 2520 path on Windows</li> 2521 <li>documentation: update to the tutorial (John Fleck), xmllint return code 2522 (John Fleck), man pages (Ville Skytta),</li> 2523 <li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX 2524 properly initialize the library (William), empty node set in XPath 2525 (William), xmlSchemas errors (William), invalid charref problem pointed 2526 by Morus Walter, XInclude xml:base generation (William), Relax-NG bug 2527 with div processing (William), XPointer and xml:base problem(William), 2528 Reader and entities, xmllint return code for schemas (William), reader 2529 streaming problem (Steve Ball), DTD serialization problem (William), 2530 libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on 2531 Python classes, xmlReader buffer bug, Python bindings memory interfaces 2532 improvement (with Stéphane Bidoul), Fixed the push parser to be back to 2533 synchronous behaviour.</li> 2534 <li>improvement: custom per-thread I/O enhancement (Rob Richards), register 2535 namespace in debug shell (Stefano Debenedetti), Python based regression 2536 test for non-Unix users (William), dynamically increase the number of 2537 XPath extension functions in Python and fix a memory leak (Marc-Antoine 2538 Parent and William)</li> 2539 <li>performance: hack done with Arjan van de Ven to reduce ELF footprint 2540 and generated code on Linux, plus use gcc runtime profiling to optimize 2541 the code generated in the RPM packages.</li> 2542 </ul> 2543 2544 <h3>2.6.10: May 17 2004</h3> 2545 <ul> 2546 <li>Web page generated for ChangeLog</li> 2547 <li>build fixes: --without-html problems, make check without make all</li> 2548 <li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp 2549 vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not 2550 use "list" as parameter name, make tests work with Python 1.5 (Ed 2551 Davis),</li> 2552 <li>improvements: made xmlTextReaderMode public, small buffers resizing 2553 (Morten Welinder), add --maxmem option to xmllint, add 2554 xmlPopInputCallback() for Matt Sergeant, refactoring of serialization 2555 escaping, added escaping customization</li> 2556 <li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William 2557 Brack), xmlReader end of stream problem, node deregistration with reader, 2558 URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp 2559 transition reduction (William), various XSD Schemas fixes (Kasimier 2560 Buchcik), XInclude fallback problem (William), weird problems with DTD 2561 (William), structured error handler callback context (William), reverse 2562 xmlEncodeSpecialChars() behaviour back to escaping '"'</li> 2563 </ul> 2564 2565 <h3>2.6.9: Apr 18 2004</h3> 2566 <ul> 2567 <li>implement xml:id Working Draft, relaxed XPath id() checking</li> 2568 <li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave 2569 Beckett), Relax-NG compilation (William Brack), Regexp patches (with 2570 William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with 2571 William), Relax-NG name classes compares (William), XInclude duplicate 2572 fallback (William), external DTD encoding detection (William), a DTD 2573 validation bug (William), xmlReader Close() fix, recusive extention 2574 schemas</li> 2575 <li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting 2576 save optimization, better handle IIS broken HTTP redirect behaviour (Ian 2577 Hummel), HTML parser frameset (James Bursa), libxml2-python RPM 2578 dependancy, XML Schemas union support (Kasimier Buchcik), warning removal 2579 clanup (William), keep ChangeLog compressed when installing from RPMs</li> 2580 <li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new 2581 example (load, xpath, modify, save), xmlCatalogDump() comments,</li> 2582 <li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft 2583 compiler NaN handling bug (Mark Vakoc)</li> 2584 </ul> 2585 2586 <h3>2.6.8: Mar 23 2004</h3> 2587 <ul> 2588 <li>First step of the cleanup of the serialization code and APIs</li> 2589 <li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam 2590 Dickmeiss), anyURI for "" (John Belmonte)</li> 2591 <li>Python: Canonicalization C14N support added (Anthony Carrico)</li> 2592 <li>xmlDocCopyNode() extension (William)</li> 2593 <li>Relax-NG: fix when processing XInclude results (William), external 2594 reference in interleave (William), missing error on <choice> 2595 failure (William), memory leak in schemas datatype facets.</li> 2596 <li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li> 2597 <li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William 2598 Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to 2599 URI on SYSTEM lookup failure, XInclude parse flags inheritance (William), 2600 XInclude and XPointer fixes for entities (William), XML parser bug 2601 reported by Holger Rauch, nanohttp fd leak (William), regexps char 2602 groups '-' handling (William), dictionary reference counting problems, 2603 do not close stderr.</li> 2604 <li>performance patches from Petr Pajas</li> 2605 <li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li> 2606 <li>compilation and portability fixes: --without-valid, catalog cleanups 2607 (Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation 2608 to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino 2609 Vidal), Windows build (Eric Zurcher)</li> 2610 </ul> 2611 2612 <h3>2.6.7: Feb 23 2004</h3> 2613 <ul> 2614 <li>documentation: tutorial updates (John Fleck), benchmark results</li> 2615 <li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li> 2616 <li>XPath optimization (Petr Pajas)</li> 2617 <li>DTD ID handling optimization</li> 2618 <li>bugfixes: xpath number with > 19 fractional (William Brack), push 2619 mode with unescaped '>' characters, fix xmllint --stream --timing, fix 2620 xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent 2621 handling NULL, trying to fix Relax-NG/Perl interface.</li> 2622 <li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li> 2623 <li>Added relaxng option to xmllint --shell</li> 2624 </ul> 2625 2626 <h3>2.6.6: Feb 12 2004</h3> 2627 <ul> 2628 <li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and 2629 William) reported by Yuuichi Teranishi</li> 2630 <li>bugfixes: make test and path issues, xmlWriter attribute serialization 2631 (William Brack), xmlWriter indentation (William), schemas validation 2632 (Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg 2633 Paraschenko), XInclude empty fallback (William), HTML warnings (William), 2634 XPointer in XInclude (William), Python namespace serialization, 2635 isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter 2636 entities in internal subset (William), internal subset bug in push mode, 2637 <xs:all> fix (Alexey Sarytchev)</li> 2638 <li>Build: fix for automake-1.8 (Alexander Winston), warnings removal 2639 (Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix 2640 --with-minimum configuration.</li> 2641 <li>XInclude: allow the 2001 namespace without warning.</li> 2642 <li>Documentation: missing example/index.html (John Fleck), version 2643 dependancies (John Fleck)</li> 2644 <li>reader API: structured error reporting (Steve Ball)</li> 2645 <li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function 2646 prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_ 2647 patch</li> 2648 <li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in 2649 input.</li> 2650 </ul> 2651 2652 <h3>2.6.5: Jan 25 2004</h3> 2653 <ul> 2654 <li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault 2655 (William), xs:all problem (William), a number of XPointer bugfixes 2656 (William), xmllint error go to stderr, DTD validation problem with 2657 namespace, memory leak (William), SAX1 cleanup and minimal options fixes 2658 (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union 2659 evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin), 2660 XML Schemas double free (Steve Ball), XInclude with no href, argument 2661 callbacks order for XPath callbacks (Frederic Peters)</li> 2662 <li>Documentation: python scripts (William Brack), xslt stylesheets (John 2663 Fleck), doc (Sven Zimmerman), I/O example.</li> 2664 <li>Python bindings: fixes (William), enum support (Stéphane Bidoul), 2665 structured error reporting (Stéphane Bidoul)</li> 2666 <li>XInclude: various fixes for conformance, problem related to dictionary 2667 references (William & me), recursion (William)</li> 2668 <li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred 2669 Mickautsch),</li> 2670 <li>xmlSchemas: normalizedString datatype (John Belmonte)</li> 2671 <li>code cleanup for strings functions (William)</li> 2672 <li>Windows: compiler patches (Mark Vakoc)</li> 2673 <li>Parser optimizations, a few new XPath and dictionary APIs for future 2674 XSLT optimizations.</li> 2675 </ul> 2676 2677 <h3>2.6.4: Dec 24 2003</h3> 2678 <ul> 2679 <li>Windows build fixes (Igor Zlatkovic)</li> 2680 <li>Some serious XInclude problems reported by Oleg Paraschenko and</li> 2681 <li>Unix and Makefile packaging fixes (me, William Brack,</li> 2682 <li>Documentation improvements (John Fleck, William Brack), example fix 2683 (Lucas Brasilino)</li> 2684 <li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of 2685 NULL strings (William Brack) , API building reader or parser from 2686 filedescriptor should not close it, changed XPath sorting to be stable 2687 again (William Brack), xmlGetNodePath() generating '(null)' (William 2688 Brack), DTD validation and namespace bug (William Brack), XML Schemas 2689 double inclusion behaviour</li> 2690 </ul> 2691 2692 <h3>2.6.3: Dec 10 2003</h3> 2693 <ul> 2694 <li>documentation updates and cleanup (DV, William Brack, John Fleck)</li> 2695 <li>added a repository of examples, examples from Aleksey Sanin, Dodji 2696 Seketeli, Alfred Mickautsch</li> 2697 <li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw 2698 (Kenneth Haley)</li> 2699 <li>Unicode range checking (William Brack)</li> 2700 <li>code cleanup (William Brack)</li> 2701 <li>Python bindings: doc (John Fleck), bug fixes</li> 2702 <li>UTF-16 cleanup and BOM issues (William Brack)</li> 2703 <li>bug fixes: ID and xmlReader validation, XPath (William Brack), 2704 xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser 2705 (James Bursa), attribute defaulting and validation, some serialization 2706 cleanups, XML_GET_LINE macro, memory debug when using threads (William 2707 Brack), serialization of attributes and entities content, xmlWriter 2708 (Daniel Schulman)</li> 2709 <li>XInclude bugfix, new APIs and update to the last version including the 2710 namespace change.</li> 2711 <li>XML Schemas improvements: include (Robert Stepanek), import and 2712 namespace handling, fixed the regression tests troubles, added examples 2713 based on Eric van der Vlist book, regexp fixes</li> 2714 <li>preliminary pattern support for streaming (needed for schemas 2715 constraints), added xmlTextReaderPreservePattern() to collect subdocument 2716 when streaming.</li> 2717 <li>various fixes in the structured error handling</li> 2718 </ul> 2719 2720 <h3>2.6.2: Nov 4 2003</h3> 2721 <ul> 2722 <li>XPath context unregistration fixes</li> 2723 <li>text node coalescing fixes (Mark Lilback)</li> 2724 <li>API to screate a W3C Schemas from an existing document (Steve Ball)</li> 2725 <li>BeOS patches (Marcin 'Shard' Konicki)</li> 2726 <li>xmlStrVPrintf function added (Aleksey Sanin)</li> 2727 <li>compilation fixes (Mark Vakoc)</li> 2728 <li>stdin parsing fix (William Brack)</li> 2729 <li>a posteriori DTD validation fixes</li> 2730 <li>xmlReader bug fixes: Walker fixes, python bindings</li> 2731 <li>fixed xmlStopParser() to really stop the parser and errors</li> 2732 <li>always generate line numbers when using the new xmlReadxxx 2733 functions</li> 2734 <li>added XInclude support to the xmlReader interface</li> 2735 <li>implemented XML_PARSE_NONET parser option</li> 2736 <li>DocBook XSLT processing bug fixed</li> 2737 <li>HTML serialization for <p> elements (William Brack and me)</li> 2738 <li>XPointer failure in XInclude are now handled as resource errors</li> 2739 <li>fixed xmllint --html to use the HTML serializer on output (added 2740 --xmlout to implement the previous behaviour of saving it using the XML 2741 serializer)</li> 2742 </ul> 2743 2744 <h3>2.6.1: Oct 28 2003</h3> 2745 <ul> 2746 <li>Mostly bugfixes after the big 2.6.0 changes</li> 2747 <li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup 2748 (William Brack)</li> 2749 <li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor 2750 Zlatkovic)</li> 2751 <li>xmlWriter bugfix (Alfred Mickautsch)</li> 2752 <li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li> 2753 <li>context reset: error state reset, push parser reset (Graham 2754 Bennett)</li> 2755 <li>context reuse: generate errors if file is not readable</li> 2756 <li>defaulted attributes for element coming from internal entities 2757 (Stephane Bidoul)</li> 2758 <li>Python: tab and spaces mix (William Brack)</li> 2759 <li>Error handler could crash in DTD validation in 2.6.0</li> 2760 <li>xmlReader: do not use the document or element _private field</li> 2761 <li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li> 2762 <li>general bug fixes: mandatory encoding in text decl, serializing 2763 Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik), 2764 XPath errors not reported, slow HTML parsing of large documents.</li> 2765 </ul> 2766 2767 <h3>2.6.0: Oct 20 2003</h3> 2768 <ul> 2769 <li>Major revision release: should be API and ABI compatible but got a lot 2770 of change</li> 2771 <li>Increased the library modularity, far more options can be stripped out, 2772 a --with-minimum configuration will weight around 160KBytes</li> 2773 <li>Use per parser and per document dictionary, allocate names and small 2774 text nodes from the dictionary</li> 2775 <li>Switch to a SAX2 like parser rewrote most of the XML parser core, 2776 provides namespace resolution and defaulted attributes, minimize memory 2777 allocations and copies, namespace checking and specific error handling, 2778 immutable buffers, make predefined entities static structures, etc...</li> 2779 <li>rewrote all the error handling in the library, all errors can be 2780 intercepted at a structured level, with precise information 2781 available.</li> 2782 <li>New simpler and more generic XML and HTML parser APIs, allowing to 2783 easilly modify the parsing options and reuse parser context for multiple 2784 consecutive documents.</li> 2785 <li>Similar new APIs for the xmlReader, for options and reuse, provided new 2786 functions to access content as const strings, use them for Python 2787 bindings</li> 2788 <li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin), 2789 Walker i.e. reader on a document tree based on Alfred Mickautsch code, 2790 make room in nodes for line numbers, reference counting and future PSVI 2791 extensions, generation of character ranges to be checked with faster 2792 algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer 2793 access</li> 2794 <li>New xmlWriter API provided by Alfred Mickautsch</li> 2795 <li>Schemas: base64 support by Anthony Carrico</li> 2796 <li>Parser<->HTTP integration fix, proper processing of the Mime-Type 2797 and charset information if available.</li> 2798 <li>Relax-NG: bug fixes including the one reported by Martijn Faassen and 2799 zeroOrMore, better error reporting.</li> 2800 <li>Python bindings (Stéphane Bidoul), never use stdout for errors 2801 output</li> 2802 <li>Portability: all the headers have macros for export and calling 2803 convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry), 2804 Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor), 2805 Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul), 2806 warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin 2807 'Shard' Konicki)</li> 2808 <li>Documentation fixes and README (William Brack), search fix (William), 2809 tutorial updates (John Fleck), namespace docs (Stefan Kost)</li> 2810 <li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized 2811 mutexes, HTML doctype lowercase, SAX/IO (William), compression detection 2812 and restore (William), attribute declaration in DTDs (William), namespace 2813 on attribute in HTML output (William), input filename (Rob Richards), 2814 namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks 2815 (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter 2816 Derr), high codepoint charref like &#x10FFFF;, buffer access in push 2817 mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug 2818 (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP 2819 error handling.</li> 2820 <li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat 2821 testing, --nodict for building without tree dictionary, --nocdata to 2822 replace CDATA by text, --nsclean to remove surperfluous namespace 2823 declarations</li> 2824 <li>added xml2-config --libtool-libs option from Kevin P. Fleming</li> 2825 <li>a lot of profiling and tuning of the code, speedup patch for 2826 xmlSearchNs() by Luca Padovani. The xmlReader should do far less 2827 allocation and it speed should get closer to SAX. Chris Anderson worked 2828 on speeding and cleaning up repetitive checking code.</li> 2829 <li>cleanup of "make tests"</li> 2830 <li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li> 2831 <li>deactivated the broken docBook SGML parser code and plugged the XML 2832 parser instead.</li> 2833 </ul> 2834 2835 <h3>2.5.11: Sep 9 2003</h3> 2836 2837 <p>A bugfix only release:</p> 2838 <ul> 2839 <li>risk of crash in Relax-NG</li> 2840 <li>risk of crash when using multithreaded programs</li> 2841 </ul> 2842 2843 <h3>2.5.10: Aug 15 2003</h3> 2844 2845 <p>A bugfixes only release</p> 2846 <ul> 2847 <li>Windows Makefiles (William Brack)</li> 2848 <li>UTF-16 support fixes (Mark Itzcovitz)</li> 2849 <li>Makefile and portability (William Brack) automake, Linux alpha, Mingw 2850 on Windows (Mikhail Grushinskiy)</li> 2851 <li>HTML parser (Oliver Stoeneberg)</li> 2852 <li>XInclude performance problem reported by Kevin Ruscoe</li> 2853 <li>XML parser performance problem reported by Grant Goodale</li> 2854 <li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li> 2855 <li>and a couple other cleanup</li> 2856 </ul> 2857 2858 <h3>2.5.9: Aug 9 2003</h3> 2859 <ul> 2860 <li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build 2861 (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading 2862 (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli), 2863 xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean 2864 Griffin), HTML parsing problem (William Brack), DTD validation for mixed 2865 content + namespaces, HTML serialization, library initialization, 2866 progressive HTML parser</li> 2867 <li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li> 2868 <li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li> 2869 <li>doc fixes and improvements (John Fleck)</li> 2870 <li>configure flag for -with-fexceptions when embedding in C++</li> 2871 <li>couple of new UTF-8 helper functions (William Brack)</li> 2872 <li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li> 2873 <li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li> 2874 <li>general compilation/warning cleanup Solaris/HP-UX/... (William 2875 Brack)</li> 2876 </ul> 2877 2878 <h3>2.5.8: Jul 6 2003</h3> 2879 <ul> 2880 <li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark 2881 Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack), 2882 PI related memleak, compilation without schemas or without xpath (Joerg 2883 Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs, 2884 rpm problem on , i86_64, removed a few compilation problems from 2.5.7, 2885 xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li> 2886 <li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li> 2887 <li>William Brack fixed multithreading lock problems</li> 2888 <li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li> 2889 <li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stéphane 2890 Bidoul)</li> 2891 <li>A few W3C Schemas Structure improvements</li> 2892 <li>W3C Schemas Datatype improvements (Charlie Bozeman)</li> 2893 <li>Python bindings for thread globals (Stéphane Bidoul), and method/class 2894 generator</li> 2895 <li>added --nonet option to xmllint</li> 2896 <li>documentation improvements (John Fleck)</li> 2897 </ul> 2898 2899 <h3>2.5.7: Apr 25 2003</h3> 2900 <ul> 2901 <li>Relax-NG: Compiling to regexp and streaming validation on top of the 2902 xmlReader interface, added to xmllint --stream</li> 2903 <li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li> 2904 <li>Support for large files: RGN validated a 4.5GB instance</li> 2905 <li>Thread support is now configured in by default</li> 2906 <li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes 2907 (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser 2908 and zero bytes handling, some missing Windows file path conversions, 2909 behaviour of the parser and validator in the presence of "out of memory" 2910 error conditions</li> 2911 <li>extended the API to be able to plug a garbage collecting memory 2912 allocator, added xmlMallocAtomic() and modified the allocations 2913 accordingly.</li> 2914 <li>Performances: removed excessive malloc() calls, speedup of the push and 2915 xmlReader interfaces, removed excessive thread locking</li> 2916 <li>Documentation: man page (John Fleck), xmlReader documentation</li> 2917 <li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li> 2918 </ul> 2919 2920 <h3>2.5.6: Apr 1 2003</h3> 2921 <ul> 2922 <li>Fixed W3C XML Schemas datatype, should be compliant now except for 2923 binHex and base64 which are not supported yet.</li> 2924 <li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and 2925 XInclude entities handling, encoding detection on external subsets, XML 2926 Schemas bugs and memory leaks, HTML parser (James Bursa)</li> 2927 <li>portability: python/trio (Albert Chin), Sun compiler warnings</li> 2928 <li>documentation: added --relaxng option to xmllint man page (John)</li> 2929 <li>improved error reporting: xml:space, start/end tag mismatches, Relax NG 2930 errors</li> 2931 </ul> 2932 2933 <h3>2.5.5: Mar 24 2003</h3> 2934 <ul> 2935 <li>Lot of fixes on the Relax NG implementation. More testing including 2936 DocBook and TEI examples.</li> 2937 <li>Increased the support for W3C XML Schemas datatype</li> 2938 <li>Several bug fixes in the URI handling layer</li> 2939 <li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding 2940 conversion, line counting in the parser.</li> 2941 <li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li> 2942 <li>Fixed the RPM spec file name</li> 2943 </ul> 2944 2945 <h3>2.5.4: Feb 20 2003</h3> 2946 <ul> 2947 <li>Conformance testing and lot of fixes on Relax NG and XInclude 2948 implementation</li> 2949 <li>Implementation of XPointer element() scheme</li> 2950 <li>Bug fixes: XML parser, XInclude entities merge, validity checking on 2951 namespaces, 2952 <p>2 serialization bugs, node info generation problems, a DTD regexp 2953 generation problem.</p> 2954 </li> 2955 <li>Portability: windows updates and path canonicalization (Igor)</li> 2956 <li>A few typo fixes (Kjartan Maraas)</li> 2957 <li>Python bindings generator fixes (Stephane Bidoul)</li> 2958 </ul> 2959 2960 <h3>2.5.3: Feb 10 2003</h3> 2961 <ul> 2962 <li>RelaxNG and XML Schemas datatypes improvements, and added a first 2963 version of RelaxNG Python bindings</li> 2964 <li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for 2965 serializing namespace nodes, encoding conversion bug, XHTML1 2966 serialization</li> 2967 <li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li> 2968 </ul> 2969 2970 <h3>2.5.2: Feb 5 2003</h3> 2971 <ul> 2972 <li>First implementation of RelaxNG, added --relaxng flag to xmllint</li> 2973 <li>Schemas support now compiled in by default.</li> 2974 <li>Bug fixes: DTD validation, namespace checking, XInclude and entities, 2975 delegateURI in XML Catalogs, HTML parser, XML reader (Stéphane Bidoul), 2976 XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory 2977 consumption, HTML parser, HTML serialization in the presence of 2978 namespaces</li> 2979 <li>added an HTML API to check elements and attributes.</li> 2980 <li>Documentation improvement, PDF for the tutorial (John Fleck), doc 2981 patches (Stefan Kost)</li> 2982 <li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li> 2983 <li>Added python bindings for XPointer, contextual error reporting 2984 (Stéphane Bidoul)</li> 2985 <li>URI/file escaping problems (Stefano Zacchiroli)</li> 2986 </ul> 2987 2988 <h3>2.5.1: Jan 8 2003</h3> 2989 <ul> 2990 <li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li> 2991 <li>documentation updates (John)</li> 2992 <li>a couple of XmlTextReader fixes</li> 2993 </ul> 2994 2995 <h3>2.5.0: Jan 6 2003</h3> 2996 <ul> 2997 <li>New <a href="xmlreader.html">XmltextReader interface</a> based on C# 2998 API (with help of Stéphane Bidoul)</li> 2999 <li>Windows: more exports, including the new API (Igor)</li> 3000 <li>XInclude fallback fix</li> 3001 <li>Python: bindings for the new API, packaging (Stéphane Bidoul), 3002 drv_libxml2.py Python xml.sax driver (Stéphane Bidoul), fixes, speedup 3003 and iterators for Python-2.2 (Hannu Krosing)</li> 3004 <li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update 3005 (John)</li> 3006 <li>Fix an XML parser bug raised by Vyacheslav Pindyura</li> 3007 <li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li> 3008 <li>Entities handling fixes</li> 3009 <li>new API to optionally track node creation and deletion (Lukas 3010 Schroeder)</li> 3011 <li>Added documentation for the XmltextReader interface and some <a 3012 href="guidelines.html">XML guidelines</a></li> 3013 </ul> 3014 3015 <h3>2.4.30: Dec 12 2002</h3> 3016 <ul> 3017 <li>2.4.29 broke the python bindings, rereleasing</li> 3018 <li>Improvement/fixes of the XML API generator, and couple of minor code 3019 fixes.</li> 3020 </ul> 3021 3022 <h3>2.4.29: Dec 11 2002</h3> 3023 <ul> 3024 <li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings 3025 (Stéphane Bidoul), Mingw (Magnus Henoch), and export list updates</li> 3026 <li>Fix for prev in python bindings (ERDI Gergo)</li> 3027 <li>Fix for entities handling (Marcus Clarke)</li> 3028 <li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1 3029 dump</li> 3030 <li>Fix for URI parsing when handling URNs with fragment identifiers</li> 3031 <li>Fix for HTTP URL escaping problem</li> 3032 <li>added an TextXmlReader (C#) like API (work in progress)</li> 3033 <li>Rewrote the API in XML generation script, includes a C parser and saves 3034 more information needed for C# bindings</li> 3035 </ul> 3036 3037 <h3>2.4.28: Nov 22 2002</h3> 3038 <ul> 3039 <li>a couple of python binding fixes</li> 3040 <li>2 bug fixes in the XML push parser</li> 3041 <li>potential memory leak removed (Martin Stoilov)</li> 3042 <li>fix to the configure script for Unix (Dimitri Papadopoulos)</li> 3043 <li>added encoding support for XInclude parse="text"</li> 3044 <li>autodetection of XHTML1 and specific serialization rules added</li> 3045 <li>nasty threading bug fixed (William Brack)</li> 3046 </ul> 3047 3048 <h3>2.4.27: Nov 17 2002</h3> 3049 <ul> 3050 <li>fixes for the Python bindings</li> 3051 <li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(), 3052 HTML parser, Schemas (Charles Bozeman), document fragment support 3053 (Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer, 3054 xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr 3055 Pajas), entities processing</li> 3056 <li>added grep to xmllint --shell</li> 3057 <li>VMS update patch from Craig A. Berry</li> 3058 <li>cleanup of the Windows build with support for more compilers (Igor), 3059 better thread support on Windows</li> 3060 <li>cleanup of Unix Makefiles and spec file</li> 3061 <li>Improvements to the documentation (John Fleck)</li> 3062 </ul> 3063 3064 <h3>2.4.26: Oct 18 2002</h3> 3065 <ul> 3066 <li>Patches for Windows CE port, improvements on Windows paths handling</li> 3067 <li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() , 3068 HTML serialization, Namespace compliance, and a number of small 3069 problems</li> 3070 </ul> 3071 3072 <h3>2.4.25: Sep 26 2002</h3> 3073 <ul> 3074 <li>A number of bug fixes: XPath, validation, Python bindings, DOM and 3075 tree, xmlI/O, Html</li> 3076 <li>Serious rewrite of XInclude</li> 3077 <li>Made XML Schemas regexp part of the default build and APIs, small fix 3078 and improvement of the regexp core</li> 3079 <li>Changed the validation code to reuse XML Schemas regexp APIs</li> 3080 <li>Better handling of Windows file paths, improvement of Makefiles (Igor, 3081 Daniel Gehriger, Mark Vakoc)</li> 3082 <li>Improved the python I/O bindings, the tests, added resolver and regexp 3083 APIs</li> 3084 <li>New logos from Marc Liyanage</li> 3085 <li>Tutorial improvements: John Fleck, Christopher Harris</li> 3086 <li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe 3087 Merlet)</li> 3088 <li>removal of all stderr/perror use for error reporting</li> 3089 <li>Better error reporting: XPath and DTD validation</li> 3090 <li>update of the trio portability layer (Bjorn Reese)</li> 3091 </ul> 3092 3093 <p><strong>2.4.24: Aug 22 2002</strong></p> 3094 <ul> 3095 <li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li> 3096 <li>Python binding fixes: makefiles (William), generator, rpm build, x86-64 3097 (fcrozat)</li> 3098 <li>HTML <style> and boolean attributes serializer fixes</li> 3099 <li>C14N improvements by Aleksey</li> 3100 <li>doc cleanups: Rick Jones</li> 3101 <li>Windows compiler makefile updates: Igor and Elizabeth Barham</li> 3102 <li>XInclude: implementation of fallback and xml:base fixup added</li> 3103 </ul> 3104 3105 <h3>2.4.23: July 6 2002</h3> 3106 <ul> 3107 <li>performances patches: Peter Jacobi</li> 3108 <li>c14n fixes, testsuite and performances: Aleksey Sanin</li> 3109 <li>added xmlDocFormatDump: Chema Celorio</li> 3110 <li>new tutorial: John Fleck</li> 3111 <li>new hash functions and performances: Sander Vesik, portability fix from 3112 Peter Jacobi</li> 3113 <li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and 3114 HTML parsers, ID lookup function</li> 3115 <li>removal of all remaining sprintf: Aleksey Sanin</li> 3116 </ul> 3117 3118 <h3>2.4.22: May 27 2002</h3> 3119 <ul> 3120 <li>a number of bug fixes: configure scripts, base handling, parser, memory 3121 usage, HTML parser, XPath, documentation (Christian Cornelssen), 3122 indentation, URI parsing</li> 3123 <li>Optimizations for XMLSec, fixing and making public some of the network 3124 protocol handlers (Aleksey)</li> 3125 <li>performance patch from Gary Pennington</li> 3126 <li>Charles Bozeman provided date and time support for XML Schemas 3127 datatypes</li> 3128 </ul> 3129 3130 <h3>2.4.21: Apr 29 2002</h3> 3131 3132 <p>This release is both a bug fix release and also contains the early XML 3133 Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a 3134 href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all 3135 interfaces are likely to change, there is huge holes, it is clearly a work in 3136 progress and don't even think of putting this code in a production system, 3137 it's actually not compiled in by default. The real fixes are: 3138 </p> 3139 3140 <ul> 3141 <li>a couple of bugs or limitations introduced in 2.4.20</li> 3142 <li>patches for Borland C++ and MSC by Igor</li> 3143 <li>some fixes on XPath strings and conformance patches by Richard 3144 Jinks</li> 3145 <li>patch from Aleksey for the ExcC14N specification</li> 3146 <li>OSF/1 bug fix by Bjorn</li> 3147 </ul> 3148 3149 <h3>2.4.20: Apr 15 2002</h3> 3150 <ul> 3151 <li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li> 3152 <li>XPath conformance testing by Richard Jinks</li> 3153 <li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings, 3154 libxml.m4</li> 3155 </ul> 3156 3157 <h3>2.4.19: Mar 25 2002</h3> 3158 <ul> 3159 <li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8 3160 encoder</li> 3161 <li>portability fixes in the HTTP code</li> 3162 <li>memory allocation checks using valgrind, and profiling tests</li> 3163 <li>revamp of the Windows build and Makefiles</li> 3164 </ul> 3165 3166 <h3>2.4.18: Mar 18 2002</h3> 3167 <ul> 3168 <li>bug fixes: tree, SAX, canonicalization, validation, portability, 3169 XPath</li> 3170 <li>removed the --with-buffer option it was becoming unmaintainable</li> 3171 <li>serious cleanup of the Python makefiles</li> 3172 <li>speedup patch to XPath very effective for DocBook stylesheets</li> 3173 <li>Fixes for Windows build, cleanup of the documentation</li> 3174 </ul> 3175 3176 <h3>2.4.17: Mar 8 2002</h3> 3177 <ul> 3178 <li>a lot of bug fixes, including "namespace nodes have no parents in 3179 XPath"</li> 3180 <li>fixed/improved the Python wrappers, added more examples and more 3181 regression tests, XPath extension functions can now return node-sets</li> 3182 <li>added the XML Canonicalization support from Aleksey Sanin</li> 3183 </ul> 3184 3185 <h3>2.4.16: Feb 20 2002</h3> 3186 <ul> 3187 <li>a lot of bug fixes, most of them were triggered by the XML Testsuite 3188 from OASIS and W3C. Compliance has been significantly improved.</li> 3189 <li>a couple of portability fixes too.</li> 3190 </ul> 3191 3192 <h3>2.4.15: Feb 11 2002</h3> 3193 <ul> 3194 <li>Fixed the Makefiles, especially the python module ones</li> 3195 <li>A few bug fixes and cleanup</li> 3196 <li>Includes cleanup</li> 3197 </ul> 3198 3199 <h3>2.4.14: Feb 8 2002</h3> 3200 <ul> 3201 <li>Change of License to the <a 3202 href="http://www.opensource.org/licenses/mit-license.html">MIT 3203 License</a> basically for integration in XFree86 codebase, and removing 3204 confusion around the previous dual-licensing</li> 3205 <li>added Python bindings, beta software but should already be quite 3206 complete</li> 3207 <li>a large number of fixes and cleanups, especially for all tree 3208 manipulations</li> 3209 <li>cleanup of the headers, generation of a reference API definition in 3210 XML</li> 3211 </ul> 3212 3213 <h3>2.4.13: Jan 14 2002</h3> 3214 <ul> 3215 <li>update of the documentation: John Fleck and Charlie Bozeman</li> 3216 <li>cleanup of timing code from Justin Fletcher</li> 3217 <li>fixes for Windows and initial thread support on Win32: Igor and Serguei 3218 Narojnyi</li> 3219 <li>Cygwin patch from Robert Collins</li> 3220 <li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li> 3221 </ul> 3222 3223 <h3>2.4.12: Dec 7 2001</h3> 3224 <ul> 3225 <li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman), 3226 XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups 3227 (robert)</li> 3228 <li>Eric Lavigne contributed project files for MacOS</li> 3229 <li>some makefiles cleanups</li> 3230 </ul> 3231 3232 <h3>2.4.11: Nov 26 2001</h3> 3233 <ul> 3234 <li>fixed a couple of errors in the includes, fixed a few bugs, some code 3235 cleanups</li> 3236 <li>xmllint man pages improvement by Heiko Rupp</li> 3237 <li>updated VMS build instructions from John A Fotheringham</li> 3238 <li>Windows Makefiles updates from Igor</li> 3239 </ul> 3240 3241 <h3>2.4.10: Nov 10 2001</h3> 3242 <ul> 3243 <li>URI escaping fix (Joel Young)</li> 3244 <li>added xmlGetNodePath() (for paths or XPointers generation)</li> 3245 <li>Fixes namespace handling problems when using DTD and validation</li> 3246 <li>improvements on xmllint: Morus Walter patches for --format and 3247 --encode, Stefan Kost and Heiko Rupp improvements on the --shell</li> 3248 <li>fixes for xmlcatalog linking pointed by Weiqi Gao</li> 3249 <li>fixes to the HTML parser</li> 3250 </ul> 3251 3252 <h3>2.4.9: Nov 6 2001</h3> 3253 <ul> 3254 <li>fixes more catalog bugs</li> 3255 <li>avoid a compilation problem, improve xmlGetLineNo()</li> 3256 </ul> 3257 3258 <h3>2.4.8: Nov 4 2001</h3> 3259 <ul> 3260 <li>fixed SGML catalogs broken in previous release, updated xmlcatalog 3261 tool</li> 3262 <li>fixed a compile errors and some includes troubles.</li> 3263 </ul> 3264 3265 <h3>2.4.7: Oct 30 2001</h3> 3266 <ul> 3267 <li>exported some debugging interfaces</li> 3268 <li>serious rewrite of the catalog code</li> 3269 <li>integrated Gary Pennington thread safety patch, added configure option 3270 and regression tests</li> 3271 <li>removed an HTML parser bug</li> 3272 <li>fixed a couple of potentially serious validation bugs</li> 3273 <li>integrated the SGML DocBook support in xmllint</li> 3274 <li>changed the nanoftp anonymous login passwd</li> 3275 <li>some I/O cleanup and a couple of interfaces for Perl wrapper</li> 3276 <li>general bug fixes</li> 3277 <li>updated xmllint man page by John Fleck</li> 3278 <li>some VMS and Windows updates</li> 3279 </ul> 3280 3281 <h3>2.4.6: Oct 10 2001</h3> 3282 <ul> 3283 <li>added an updated man pages by John Fleck</li> 3284 <li>portability and configure fixes</li> 3285 <li>an infinite loop on the HTML parser was removed (William)</li> 3286 <li>Windows makefile patches from Igor</li> 3287 <li>fixed half a dozen bugs reported for libxml or libxslt</li> 3288 <li>updated xmlcatalog to be able to modify SGML super catalogs</li> 3289 </ul> 3290 3291 <h3>2.4.5: Sep 14 2001</h3> 3292 <ul> 3293 <li>Remove a few annoying bugs in 2.4.4</li> 3294 <li>forces the HTML serializer to output decimal charrefs since some 3295 version of Netscape can't handle hexadecimal ones</li> 3296 </ul> 3297 3298 <h3>1.8.16: Sep 14 2001</h3> 3299 <ul> 3300 <li>maintenance release of the old libxml1 branch, couple of bug and 3301 portability fixes</li> 3302 </ul> 3303 3304 <h3>2.4.4: Sep 12 2001</h3> 3305 <ul> 3306 <li>added --convert to xmlcatalog, bug fixes and cleanups of XML 3307 Catalog</li> 3308 <li>a few bug fixes and some portability changes</li> 3309 <li>some documentation cleanups</li> 3310 </ul> 3311 3312 <h3>2.4.3: Aug 23 2001</h3> 3313 <ul> 3314 <li>XML Catalog support see the doc</li> 3315 <li>New NaN/Infinity floating point code</li> 3316 <li>A few bug fixes</li> 3317 </ul> 3318 3319 <h3>2.4.2: Aug 15 2001</h3> 3320 <ul> 3321 <li>adds xmlLineNumbersDefault() to control line number generation</li> 3322 <li>lot of bug fixes</li> 3323 <li>the Microsoft MSC projects files should now be up to date</li> 3324 <li>inheritance of namespaces from DTD defaulted attributes</li> 3325 <li>fixes a serious potential security bug</li> 3326 <li>added a --format option to xmllint</li> 3327 </ul> 3328 3329 <h3>2.4.1: July 24 2001</h3> 3330 <ul> 3331 <li>possibility to keep line numbers in the tree</li> 3332 <li>some computation NaN fixes</li> 3333 <li>extension of the XPath API</li> 3334 <li>cleanup for alpha and ia64 targets</li> 3335 <li>patch to allow saving through HTTP PUT or POST</li> 3336 </ul> 3337 3338 <h3>2.4.0: July 10 2001</h3> 3339 <ul> 3340 <li>Fixed a few bugs in XPath, validation, and tree handling.</li> 3341 <li>Fixed XML Base implementation, added a couple of examples to the 3342 regression tests</li> 3343 <li>A bit of cleanup</li> 3344 </ul> 3345 3346 <h3>2.3.14: July 5 2001</h3> 3347 <ul> 3348 <li>fixed some entities problems and reduce memory requirement when 3349 substituting them</li> 3350 <li>lots of improvements in the XPath queries interpreter can be 3351 substantially faster</li> 3352 <li>Makefiles and configure cleanups</li> 3353 <li>Fixes to XPath variable eval, and compare on empty node set</li> 3354 <li>HTML tag closing bug fixed</li> 3355 <li>Fixed an URI reference computation problem when validating</li> 3356 </ul> 3357 3358 <h3>2.3.13: June 28 2001</h3> 3359 <ul> 3360 <li>2.3.12 configure.in was broken as well as the push mode XML parser</li> 3361 <li>a few more fixes for compilation on Windows MSC by Yon Derek</li> 3362 </ul> 3363 3364 <h3>1.8.14: June 28 2001</h3> 3365 <ul> 3366 <li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li> 3367 <li>Small Makefile fix</li> 3368 </ul> 3369 3370 <h3>2.3.12: June 26 2001</h3> 3371 <ul> 3372 <li>lots of cleanup</li> 3373 <li>a couple of validation fix</li> 3374 <li>fixed line number counting</li> 3375 <li>fixed serious problems in the XInclude processing</li> 3376 <li>added support for UTF8 BOM at beginning of entities</li> 3377 <li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0 3378 miscompile uri.c (William), Thomas Leitner provided a fix for the 3379 optimizer on Tru64</li> 3380 <li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for 3381 compilation on Windows MSC</li> 3382 <li>update of libxml-doc.el (Felix Natter)</li> 3383 <li>fixed 2 bugs in URI normalization code</li> 3384 </ul> 3385 3386 <h3>2.3.11: June 17 2001</h3> 3387 <ul> 3388 <li>updates to trio, Makefiles and configure should fix some portability 3389 problems (alpha)</li> 3390 <li>fixed some HTML serialization problems (pre, script, and block/inline 3391 handling), added encoding aware APIs, cleanup of this code</li> 3392 <li>added xmlHasNsProp()</li> 3393 <li>implemented a specific PI for encoding support in the DocBook SGML 3394 parser</li> 3395 <li>some XPath fixes (-Infinity, / as a function parameter and namespaces 3396 node selection)</li> 3397 <li>fixed a performance problem and an error in the validation code</li> 3398 <li>fixed XInclude routine to implement the recursive behaviour</li> 3399 <li>fixed xmlFreeNode problem when libxml is included statically twice</li> 3400 <li>added --version to xmllint for bug reports</li> 3401 </ul> 3402 3403 <h3>2.3.10: June 1 2001</h3> 3404 <ul> 3405 <li>fixed the SGML catalog support</li> 3406 <li>a number of reported bugs got fixed, in XPath, iconv detection, 3407 XInclude processing</li> 3408 <li>XPath string function should now handle unicode correctly</li> 3409 </ul> 3410 3411 <h3>2.3.9: May 19 2001</h3> 3412 3413 <p>Lots of bugfixes, and added a basic SGML catalog support: 3414 </p> 3415 <ul> 3416 <li>HTML push bugfix #54891 and another patch from Jonas Borgstrom</li> 3417 <li>some serious speed optimization again</li> 3418 <li>some documentation cleanups</li> 3419 <li>trying to get better linking on Solaris (-R)</li> 3420 <li>XPath API cleanup from Thomas Broyer</li> 3421 <li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed 3422 xmlValidGetValidElements()</li> 3423 <li>Added an INSTALL file</li> 3424 <li>Attribute removal added to API: #54433</li> 3425 <li>added a basic support for SGML catalogs</li> 3426 <li>fixed xmlKeepBlanksDefault(0) API</li> 3427 <li>bugfix in xmlNodeGetLang()</li> 3428 <li>fixed a small configure portability problem</li> 3429 <li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li> 3430 </ul> 3431 3432 <h3>1.8.13: May 14 2001</h3> 3433 <ul> 3434 <li>bugfixes release of the old libxml1 branch used by Gnome</li> 3435 </ul> 3436 3437 <h3>2.3.8: May 3 2001</h3> 3438 <ul> 3439 <li>Integrated an SGML DocBook parser for the Gnome project</li> 3440 <li>Fixed a few things in the HTML parser</li> 3441 <li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating 3442 point portability issue</li> 3443 <li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for 3444 DOM+validation using the XML REC as input and a 700MHz celeron).</li> 3445 <li>incorporated more Windows cleanup</li> 3446 <li>added xmlSaveFormatFile()</li> 3447 <li>fixed problems in copying nodes with entities references (gdome)</li> 3448 <li>removed some troubles surrounding the new validation module</li> 3449 </ul> 3450 3451 <h3>2.3.7: April 22 2001</h3> 3452 <ul> 3453 <li>lots of small bug fixes, corrected XPointer</li> 3454 <li>Non deterministic content model validation support</li> 3455 <li>added xmlDocCopyNode for gdome2</li> 3456 <li>revamped the way the HTML parser handles end of tags</li> 3457 <li>XPath: corrections of namespaces support and number formatting</li> 3458 <li>Windows: Igor Zlatkovic patches for MSC compilation</li> 3459 <li>HTML output fixes from P C Chow and William M. Brack</li> 3460 <li>Improved validation speed sensible for DocBook</li> 3461 <li>fixed a big bug with ID declared in external parsed entities</li> 3462 <li>portability fixes, update of Trio from Bjorn Reese</li> 3463 </ul> 3464 3465 <h3>2.3.6: April 8 2001</h3> 3466 <ul> 3467 <li>Code cleanup using extreme gcc compiler warning options, found and 3468 cleared half a dozen potential problem</li> 3469 <li>the Eazel team found an XML parser bug</li> 3470 <li>cleaned up the user of some of the string formatting function. used the 3471 trio library code to provide the one needed when the platform is missing 3472 them</li> 3473 <li>xpath: removed a memory leak and fixed the predicate evaluation 3474 problem, extended the testsuite and cleaned up the result. XPointer seems 3475 broken ...</li> 3476 </ul> 3477 3478 <h3>2.3.5: Mar 23 2001</h3> 3479 <ul> 3480 <li>Biggest change is separate parsing and evaluation of XPath expressions, 3481 there is some new APIs for this too</li> 3482 <li>included a number of bug fixes(XML push parser, 51876, notations, 3483 52299)</li> 3484 <li>Fixed some portability issues</li> 3485 </ul> 3486 3487 <h3>2.3.4: Mar 10 2001</h3> 3488 <ul> 3489 <li>Fixed bugs #51860 and #51861</li> 3490 <li>Added a global variable xmlDefaultBufferSize to allow default buffer 3491 size to be application tunable.</li> 3492 <li>Some cleanup in the validation code, still a bug left and this part 3493 should probably be rewritten to support ambiguous content model :-\</li> 3494 <li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3 3495 parser</li> 3496 <li>Fixed another bug in xmlNodeGetContent()</li> 3497 <li>Bjorn fixed XPath node collection and Number formatting</li> 3498 <li>Fixed a loop reported in the HTML parsing</li> 3499 <li>blank space are reported even if the Dtd content model proves that they 3500 are formatting spaces, this is for XML conformance</li> 3501 </ul> 3502 3503 <h3>2.3.3: Mar 1 2001</h3> 3504 <ul> 3505 <li>small change in XPath for XSLT</li> 3506 <li>documentation cleanups</li> 3507 <li>fix in validation by Gary Pennington</li> 3508 <li>serious parsing performances improvements</li> 3509 </ul> 3510 3511 <h3>2.3.2: Feb 24 2001</h3> 3512 <ul> 3513 <li>chasing XPath bugs, found a bunch, completed some TODO</li> 3514 <li>fixed a Dtd parsing bug</li> 3515 <li>fixed a bug in xmlNodeGetContent</li> 3516 <li>ID/IDREF support partly rewritten by Gary Pennington</li> 3517 </ul> 3518 3519 <h3>2.3.1: Feb 15 2001</h3> 3520 <ul> 3521 <li>some XPath and HTML bug fixes for XSLT</li> 3522 <li>small extension of the hash table interfaces for DOM gdome2 3523 implementation</li> 3524 <li>A few bug fixes</li> 3525 </ul> 3526 3527 <h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3> 3528 <ul> 3529 <li>Lots of XPath bug fixes</li> 3530 <li>Add a mode with Dtd lookup but without validation error reporting for 3531 XSLT</li> 3532 <li>Add support for text node without escaping (XSLT)</li> 3533 <li>bug fixes for xmlCheckFilename</li> 3534 <li>validation code bug fixes from Gary Pennington</li> 3535 <li>Patch from Paul D. Smith correcting URI path normalization</li> 3536 <li>Patch to allow simultaneous install of libxml-devel and 3537 libxml2-devel</li> 3538 <li>the example Makefile is now fixed</li> 3539 <li>added HTML to the RPM packages</li> 3540 <li>tree copying bugfixes</li> 3541 <li>updates to Windows makefiles</li> 3542 <li>optimization patch from Bjorn Reese</li> 3543 </ul> 3544 3545 <h3>2.2.11: Jan 4 2001</h3> 3546 <ul> 3547 <li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li> 3548 <li>added htmlHandleOmittedElem()</li> 3549 <li>Applied Bjorn Reese's IPV6 first patch</li> 3550 <li>Applied Paul D. Smith patches for validation of XInclude results</li> 3551 <li>added XPointer xmlns() new scheme support</li> 3552 </ul> 3553 3554 <h3>2.2.10: Nov 25 2000</h3> 3555 <ul> 3556 <li>Fix the Windows problems of 2.2.8</li> 3557 <li>integrate OpenVMS patches</li> 3558 <li>better handling of some nasty HTML input</li> 3559 <li>Improved the XPointer implementation</li> 3560 <li>integrate a number of provided patches</li> 3561 </ul> 3562 3563 <h3>2.2.9: Nov 25 2000</h3> 3564 <ul> 3565 <li>erroneous release :-(</li> 3566 </ul> 3567 3568 <h3>2.2.8: Nov 13 2000</h3> 3569 <ul> 3570 <li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a> 3571 support</li> 3572 <li>Patch in conditional section handling</li> 3573 <li>updated MS compiler project</li> 3574 <li>fixed some XPath problems</li> 3575 <li>added an URI escaping function</li> 3576 <li>some other bug fixes</li> 3577 </ul> 3578 3579 <h3>2.2.7: Oct 31 2000</h3> 3580 <ul> 3581 <li>added message redirection</li> 3582 <li>XPath improvements (thanks TOM !)</li> 3583 <li>xmlIOParseDTD() added</li> 3584 <li>various small fixes in the HTML, URI, HTTP and XPointer support</li> 3585 <li>some cleanup of the Makefile, autoconf and the distribution content</li> 3586 </ul> 3587 3588 <h3>2.2.6: Oct 25 2000:</h3> 3589 <ul> 3590 <li>Added an hash table module, migrated a number of internal structure to 3591 those</li> 3592 <li>Fixed a posteriori validation problems</li> 3593 <li>HTTP module cleanups</li> 3594 <li>HTML parser improvements (tag errors, script/style handling, attribute 3595 normalization)</li> 3596 <li>coalescing of adjacent text nodes</li> 3597 <li>couple of XPath bug fixes, exported the internal API</li> 3598 </ul> 3599 3600 <h3>2.2.5: Oct 15 2000:</h3> 3601 <ul> 3602 <li>XPointer implementation and testsuite</li> 3603 <li>Lot of XPath fixes, added variable and functions registration, more 3604 tests</li> 3605 <li>Portability fixes, lots of enhancements toward an easy Windows build 3606 and release</li> 3607 <li>Late validation fixes</li> 3608 <li>Integrated a lot of contributed patches</li> 3609 <li>added memory management docs</li> 3610 <li>a performance problem when using large buffer seems fixed</li> 3611 </ul> 3612 3613 <h3>2.2.4: Oct 1 2000:</h3> 3614 <ul> 3615 <li>main XPath problem fixed</li> 3616 <li>Integrated portability patches for Windows</li> 3617 <li>Serious bug fixes on the URI and HTML code</li> 3618 </ul> 3619 3620 <h3>2.2.3: Sep 17 2000</h3> 3621 <ul> 3622 <li>bug fixes</li> 3623 <li>cleanup of entity handling code</li> 3624 <li>overall review of all loops in the parsers, all sprintf usage has been 3625 checked too</li> 3626 <li>Far better handling of larges Dtd. Validating against DocBook XML Dtd 3627 works smoothly now.</li> 3628 </ul> 3629 3630 <h3>1.8.10: Sep 6 2000</h3> 3631 <ul> 3632 <li>bug fix release for some Gnome projects</li> 3633 </ul> 3634 3635 <h3>2.2.2: August 12 2000</h3> 3636 <ul> 3637 <li>mostly bug fixes</li> 3638 <li>started adding routines to access xml parser context options</li> 3639 </ul> 3640 3641 <h3>2.2.1: July 21 2000</h3> 3642 <ul> 3643 <li>a purely bug fixes release</li> 3644 <li>fixed an encoding support problem when parsing from a memory block</li> 3645 <li>fixed a DOCTYPE parsing problem</li> 3646 <li>removed a bug in the function allowing to override the memory 3647 allocation routines</li> 3648 </ul> 3649 3650 <h3>2.2.0: July 14 2000</h3> 3651 <ul> 3652 <li>applied a lot of portability fixes</li> 3653 <li>better encoding support/cleanup and saving (content is now always 3654 encoded in UTF-8)</li> 3655 <li>the HTML parser now correctly handles encodings</li> 3656 <li>added xmlHasProp()</li> 3657 <li>fixed a serious problem with &#38;</li> 3658 <li>propagated the fix to FTP client</li> 3659 <li>cleanup, bugfixes, etc ...</li> 3660 <li>Added a page about <a href="encoding.html">libxml Internationalization 3661 support</a></li> 3662 </ul> 3663 3664 <h3>1.8.9: July 9 2000</h3> 3665 <ul> 3666 <li>fixed the spec the RPMs should be better</li> 3667 <li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve 3668 rpmfind users problem</li> 3669 </ul> 3670 3671 <h3>2.1.1: July 1 2000</h3> 3672 <ul> 3673 <li>fixes a couple of bugs in the 2.1.0 packaging</li> 3674 <li>improvements on the HTML parser</li> 3675 </ul> 3676 3677 <h3>2.1.0 and 1.8.8: June 29 2000</h3> 3678 <ul> 3679 <li>1.8.8 is mostly a commodity package for upgrading to libxml2 according 3680 to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem 3681 about &#38; charref parsing</li> 3682 <li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it 3683 also contains numerous fixes and enhancements: 3684 <ul> 3685 <li>added xmlStopParser() to stop parsing</li> 3686 <li>improved a lot parsing speed when there is large CDATA blocs</li> 3687 <li>includes XPath patches provided by Picdar Technology</li> 3688 <li>tried to fix as much as possible DTD validation and namespace 3689 related problems</li> 3690 <li>output to a given encoding has been added/tested</li> 3691 <li>lot of various fixes</li> 3692 </ul> 3693 </li> 3694 </ul> 3695 3696 <h3>2.0.0: Apr 12 2000</h3> 3697 <ul> 3698 <li>First public release of libxml2. If you are using libxml, it's a good 3699 idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially 3700 scheduled for Apr 3 the release occurred only on Apr 12 due to massive 3701 workload.</li> 3702 <li>The include are now located under $prefix/include/libxml (instead of 3703 $prefix/include/gnome-xml), they also are referenced by 3704 <pre>#include <libxml/xxx.h></pre> 3705 <p>instead of</p> 3706 <pre>#include "xxx.h"</pre> 3707 </li> 3708 <li>a new URI module for parsing URIs and following strictly RFC 2396</li> 3709 <li>the memory allocation routines used by libxml can now be overloaded 3710 dynamically by using xmlMemSetup()</li> 3711 <li>The previously CVS only tool tester has been renamed 3712 <strong>xmllint</strong> and is now installed as part of the libxml2 3713 package</li> 3714 <li>The I/O interface has been revamped. There is now ways to plug in 3715 specific I/O modules, either at the URI scheme detection level using 3716 xmlRegisterInputCallbacks() or by passing I/O functions when creating a 3717 parser context using xmlCreateIOParserCtxt()</li> 3718 <li>there is a C preprocessor macro LIBXML_VERSION providing the version 3719 number of the libxml module in use</li> 3720 <li>a number of optional features of libxml can now be excluded at 3721 configure time (FTP/HTTP/HTML/XPath/Debug)</li> 3722 </ul> 3723 3724 <h3>2.0.0beta: Mar 14 2000</h3> 3725 <ul> 3726 <li>This is a first Beta release of libxml version 2</li> 3727 <li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org 3728 FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and 3729 RPMs</li> 3730 <li>This version is now the head in the Gnome CVS base, the old one is 3731 available under the tag LIB_XML_1_X</li> 3732 <li>This includes a very large set of changes. From a programmatic point 3733 of view applications should not have to be modified too much, check the 3734 <a href="upgrade.html">upgrade page</a></li> 3735 <li>Some interfaces may changes (especially a bit about encoding).</li> 3736 <li>the updates includes: 3737 <ul> 3738 <li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly 3739 handled now</li> 3740 <li>Better handling of entities, especially well-formedness checking 3741 and proper PEref extensions in external subsets</li> 3742 <li>DTD conditional sections</li> 3743 <li>Validation now correctly handle entities content</li> 3744 <li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change 3745 structures to accommodate DOM</a></li> 3746 </ul> 3747 </li> 3748 <li>Serious progress were made toward compliance, <a 3749 href="conf/result.html">here are the result of the test</a> against the 3750 OASIS testsuite (except the Japanese tests since I don't support that 3751 encoding yet). This URL is rebuilt every couple of hours using the CVS 3752 head version.</li> 3753 </ul> 3754 3755 <h3>1.8.7: Mar 6 2000</h3> 3756 <ul> 3757 <li>This is a bug fix release:</li> 3758 <li>It is possible to disable the ignorable blanks heuristic used by 3759 libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note 3760 that for adherence to XML spec, this behaviour will be disabled by 3761 default in 2.x . The same function will allow to keep compatibility for 3762 old code.</li> 3763 <li>Blanks in <a> </a> constructs are not ignored anymore, 3764 avoiding heuristic is really the Right Way :-\</li> 3765 <li>The unchecked use of snprintf which was breaking libxml-1.8.6 3766 compilation on some platforms has been fixed</li> 3767 <li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing 3768 URIs</li> 3769 </ul> 3770 3771 <h3>1.8.6: Jan 31 2000</h3> 3772 <ul> 3773 <li>added a nanoFTP transport module, debugged until the new version of <a 3774 href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use 3775 it without troubles</li> 3776 </ul> 3777 3778 <h3>1.8.5: Jan 21 2000</h3> 3779 <ul> 3780 <li>adding APIs to parse a well balanced chunk of XML (production <a 3781 href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the 3782 XML spec)</li> 3783 <li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus@fast.no</li> 3784 <li>Jody Goldberg <jgoldberg@home.com> provided another patch trying 3785 to solve the zlib checks problems</li> 3786 <li>The current state in gnome CVS base is expected to ship as 1.8.5 with 3787 gnumeric soon</li> 3788 </ul> 3789 3790 <h3>1.8.4: Jan 13 2000</h3> 3791 <ul> 3792 <li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li> 3793 <li>all exit() call should have been removed from libxml</li> 3794 <li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li> 3795 <li>added newDocFragment()</li> 3796 </ul> 3797 3798 <h3>1.8.3: Jan 5 2000</h3> 3799 <ul> 3800 <li>a Push interface for the XML and HTML parsers</li> 3801 <li>a shell-like interface to the document tree (try tester --shell :-)</li> 3802 <li>lots of bug fixes and improvement added over XMas holidays</li> 3803 <li>fixed the DTD parsing code to work with the xhtml DTD</li> 3804 <li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li> 3805 <li>Fixed bugs in xmlNewNs()</li> 3806 <li>External entity loading code has been revamped, now it uses 3807 xmlLoadExternalEntity(), some fix on entities processing were added</li> 3808 <li>cleaned up WIN32 includes of socket stuff</li> 3809 </ul> 3810 3811 <h3>1.8.2: Dec 21 1999</h3> 3812 <ul> 3813 <li>I got another problem with includes and C++, I hope this issue is fixed 3814 for good this time</li> 3815 <li>Added a few tree modification functions: xmlReplaceNode, 3816 xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and 3817 xmlDocSetRootElement</li> 3818 <li>Tried to improve the HTML output with help from <a 3819 href="mailto:clahey@umich.edu">Chris Lahey</a></li> 3820 </ul> 3821 3822 <h3>1.8.1: Dec 18 1999</h3> 3823 <ul> 3824 <li>various patches to avoid troubles when using libxml with C++ compilers 3825 the "namespace" keyword and C escaping in include files</li> 3826 <li>a problem in one of the core macros IS_CHAR was corrected</li> 3827 <li>fixed a bug introduced in 1.8.0 breaking default namespace processing, 3828 and more specifically the Dia application</li> 3829 <li>fixed a posteriori validation (validation after parsing, or by using a 3830 Dtd not specified in the original document)</li> 3831 <li>fixed a bug in</li> 3832 </ul> 3833 3834 <h3>1.8.0: Dec 12 1999</h3> 3835 <ul> 3836 <li>cleanup, especially memory wise</li> 3837 <li>the parser should be more reliable, especially the HTML one, it should 3838 not crash, whatever the input !</li> 3839 <li>Integrated various patches, especially a speedup improvement for large 3840 dataset from <a href="mailto:cnygard@bellatlantic.net">Carl Nygard</a>, 3841 configure with --with-buffers to enable them.</li> 3842 <li>attribute normalization, oops should have been added long ago !</li> 3843 <li>attributes defaulted from DTDs should be available, xmlSetProp() now 3844 does entities escaping by default.</li> 3845 </ul> 3846 3847 <h3>1.7.4: Oct 25 1999</h3> 3848 <ul> 3849 <li>Lots of HTML improvement</li> 3850 <li>Fixed some errors when saving both XML and HTML</li> 3851 <li>More examples, the regression tests should now look clean</li> 3852 <li>Fixed a bug with contiguous charref</li> 3853 </ul> 3854 3855 <h3>1.7.3: Sep 29 1999</h3> 3856 <ul> 3857 <li>portability problems fixed</li> 3858 <li>snprintf was used unconditionally, leading to link problems on system 3859 were it's not available, fixed</li> 3860 </ul> 3861 3862 <h3>1.7.1: Sep 24 1999</h3> 3863 <ul> 3864 <li>The basic type for strings manipulated by libxml has been renamed in 3865 1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason 3866 is that CHAR was conflicting with a predefined type on Windows. However 3867 on non WIN32 environment, compatibility is provided by the way of a 3868 <strong>#define </strong>.</li> 3869 <li>Changed another error : the use of a structure field called errno, and 3870 leading to troubles on platforms where it's a macro</li> 3871 </ul> 3872 3873 <h3>1.7.0: Sep 23 1999</h3> 3874 <ul> 3875 <li>Added the ability to fetch remote DTD or parsed entities, see the <a 3876 href="html/libxml-nanohttp.html">nanohttp</a> module.</li> 3877 <li>Added an errno to report errors by another mean than a simple printf 3878 like callback</li> 3879 <li>Finished ID/IDREF support and checking when validation</li> 3880 <li>Serious memory leaks fixed (there is now a <a 3881 href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li> 3882 <li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a> 3883 implementation</li> 3884 <li>Added an HTML parser front-end</li> 3885 </ul> 3886 3887 <h2><a name="XML">XML</a></h2> 3888 3889 <p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for 3890 markup-based structured documents. Here is <a name="example">an example XML 3891 document</a>:</p> 3892 <pre><?xml version="1.0"?> 3893 <EXAMPLE prop1="gnome is great" prop2="&amp; linux too"> 3894 <head> 3895 <title>Welcome to Gnome</title> 3896 </head> 3897 <chapter> 3898 <title>The Linux adventure</title> 3899 <p>bla bla bla ...</p> 3900 <image href="linus.gif"/> 3901 <p>...</p> 3902 </chapter> 3903 </EXAMPLE></pre> 3904 3905 <p>The first line specifies that it is an XML document and gives useful 3906 information about its encoding. Then the rest of the document is a text 3907 format whose structure is specified by tags between brackets. <strong>Each 3908 tag opened has to be closed</strong>. XML is pedantic about this. However, if 3909 a tag is empty (no content), a single tag can serve as both the opening and 3910 closing tag if it ends with <code>/></code> rather than with 3911 <code>></code>. Note that, for example, the image tag has no content (just 3912 an attribute) and is closed by ending the tag with <code>/></code>.</p> 3913 3914 <p>XML can be applied successfully to a wide range of tasks, ranging from 3915 long term structured document maintenance (where it follows the steps of 3916 SGML) to simple data encoding mechanisms like configuration file formatting 3917 (glade), spreadsheets (gnumeric), or even shorter lived documents such as 3918 WebDAV where it is used to encode remote calls between a client and a 3919 server.</p> 3920 3921 <h2><a name="XSLT">XSLT</a></h2> 3922 3923 <p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p> 3924 3925 <p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a 3926 language for transforming XML documents into other XML documents (or 3927 HTML/textual output).</p> 3928 3929 <p>A separate library called libxslt is available implementing XSLT-1.0 for 3930 libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p> 3931 3932 <p>You can check the progresses on the libxslt <a 3933 href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p> 3934 3935 <h2><a name="Python">Python and bindings</a></h2> 3936 3937 <p>There are a number of language bindings and wrappers available for 3938 libxml2, the list below is not exhaustive. Please contact the <a 3939 href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a> 3940 (<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in 3941 order to get updates to this list or to discuss the specific topic of libxml2 3942 or libxslt wrappers or bindings:</p> 3943 <ul> 3944 <li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the 3945 most up-to-date C++ bindings for libxml2, check the <a 3946 href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a> 3947 and the <a 3948 href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li> 3949 <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper 3950 based on the gdome2 bindings</a> maintained by Tobias Peters.</li> 3951 <li>and a third C++ wrapper by Peter Jones <pjones@pmade.org> 3952 <p>Website: <a 3953 href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p> 3954 </li> 3955 <li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl 3956 bindings</a> are available on CPAN, as well as XML::LibXSLT 3957 <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt 3958 bindings</a>.</li> 3959 <li>If you're interested into scripting XML processing, have a look at <a 3960 href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on 3961 Libxml2 Perl bindings.</li> 3962 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provides an 3963 earlier version of the libxml/libxslt <a 3964 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li> 3965 <li>Gopal.V and Peter Minten develop <a 3966 href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of 3967 C# libxml2 bindings.</li> 3968 <li>Petr Kozelka provides <a 3969 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 3970 libxml2</a> with Kylix, Delphi and other Pascal compilers.</li> 3971 <li>Uwe Fechner also provides <a 3972 href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2 3973 implementation for Kylix2/D5/D6 from Borland.</li> 3974 <li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a> 3975 and libxml2 bindings are also available in Ruby through the <a 3976 href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module 3977 maintained by Tobias Peters.</li> 3978 <li>Steve Ball and contributors maintains <a 3979 href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for 3980 Tcl</a>.</li> 3981 <li>libxml2 and libxslt are the default XML libraries for PHP5.</li> 3982 <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is 3983 an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and 3984 libxslt as part of GNU ClasspathX project.</li> 3985 <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for 3986 <a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li> 3987 <li><a 3988 href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a> 3989 provides <a 3990 href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib 3991 osax</a>. This is an osax for Mac OS X with a set of commands to 3992 implement in AppleScript the XML DOM, XPATH and XSLT. Also includes 3993 commands for Property-lists (Apple's fast lookup table XML format.)</li> 3994 <li>Francesco Montorsi developped <a 3995 href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a> 3996 wrappers that interface libxml2, allowing wxWidgets applications to 3997 load/save/edit XML instances.</li> 3998 </ul> 3999 4000 <p>The distribution includes a set of Python bindings, which are guaranteed 4001 to be maintained as part of the library in the future, though the Python 4002 interface have not yet reached the completeness of the C API.</p> 4003 4004 <p>Note that some of the Python purist dislike the default set of Python 4005 bindings, rather than complaining I suggest they have a look at <a 4006 href="http://lxml.de/">lxml the more pythonic bindings for libxml2 4007 and libxslt</a> and <a 4008 href="http://lxml.de/mailinglist/">check the mailing-list</a>.</p> 4009 4010 <p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane Bidoul</a> 4011 maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port 4012 of the Python bindings</a>.</p> 4013 4014 <p>Note to people interested in building bindings, the API is formalized as 4015 <a href="libxml2-api.xml">an XML API description file</a> which allows to 4016 automate a large part of the Python bindings, this includes function 4017 descriptions, enums, structures, typedefs, etc... The Python script used to 4018 build the bindings is python/generator.py in the source distribution.</p> 4019 4020 <p>To install the Python bindings there are 2 options:</p> 4021 <ul> 4022 <li>If you use an RPM based distribution, simply install the <a 4023 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python 4024 RPM</a> (and if needed the <a 4025 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python 4026 RPM</a>).</li> 4027 <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python 4028 module distribution</a> corresponding to your installed version of 4029 libxml2 and libxslt. Note that to install it you will need both libxml2 4030 and libxslt installed and run "python setup.py build install" in the 4031 module tree.</li> 4032 </ul> 4033 4034 <p>The distribution includes a set of examples and regression tests for the 4035 python bindings in the <code>python/tests</code> directory. Here are some 4036 excerpts from those tests:</p> 4037 4038 <h3>tst.py:</h3> 4039 4040 <p>This is a basic test of the file interface and DOM navigation:</p> 4041 <pre>import libxml2, sys 4042 4043 doc = libxml2.parseFile("tst.xml") 4044 if doc.name != "tst.xml": 4045 print "doc.name failed" 4046 sys.exit(1) 4047 root = doc.children 4048 if root.name != "doc": 4049 print "root.name failed" 4050 sys.exit(1) 4051 child = root.children 4052 if child.name != "foo": 4053 print "child.name failed" 4054 sys.exit(1) 4055 doc.freeDoc()</pre> 4056 4057 <p>The Python module is called libxml2; parseFile is the equivalent of 4058 xmlParseFile (most of the bindings are automatically generated, and the xml 4059 prefix is removed and the casing convention are kept). All node seen at the 4060 binding level share the same subset of accessors:</p> 4061 <ul> 4062 <li><code>name</code> : returns the node name</li> 4063 <li><code>type</code> : returns a string indicating the node type</li> 4064 <li><code>content</code> : returns the content of the node, it is based on 4065 xmlNodeGetContent() and hence is recursive.</li> 4066 <li><code>parent</code> , <code>children</code>, <code>last</code>, 4067 <code>next</code>, <code>prev</code>, <code>doc</code>, 4068 <code>properties</code>: pointing to the associated element in the tree, 4069 those may return None in case no such link exists.</li> 4070 </ul> 4071 4072 <p>Also note the need to explicitly deallocate documents with freeDoc() . 4073 Reference counting for libxml2 trees would need quite a lot of work to 4074 function properly, and rather than risk memory leaks if not implemented 4075 correctly it sounds safer to have an explicit function to free a tree. The 4076 wrapper python objects like doc, root or child are them automatically garbage 4077 collected.</p> 4078 4079 <h3>validate.py:</h3> 4080 4081 <p>This test check the validation interfaces and redirection of error 4082 messages:</p> 4083 <pre>import libxml2 4084 4085 #deactivate error messages from the validation 4086 def noerr(ctx, str): 4087 pass 4088 4089 libxml2.registerErrorHandler(noerr, None) 4090 4091 ctxt = libxml2.createFileParserCtxt("invalid.xml") 4092 ctxt.validate(1) 4093 ctxt.parseDocument() 4094 doc = ctxt.doc() 4095 valid = ctxt.isValid() 4096 doc.freeDoc() 4097 if valid != 0: 4098 print "validity check failed"</pre> 4099 4100 <p>The first thing to notice is the call to registerErrorHandler(), it 4101 defines a new error handler global to the library. It is used to avoid seeing 4102 the error messages when trying to validate the invalid document.</p> 4103 4104 <p>The main interest of that test is the creation of a parser context with 4105 createFileParserCtxt() and how the behaviour can be changed before calling 4106 parseDocument() . Similarly the information resulting from the parsing phase 4107 is also available using context methods.</p> 4108 4109 <p>Contexts like nodes are defined as class and the libxml2 wrappers maps the 4110 C function interfaces in terms of objects method as much as possible. The 4111 best to get a complete view of what methods are supported is to look at the 4112 libxml2.py module containing all the wrappers.</p> 4113 4114 <h3>push.py:</h3> 4115 4116 <p>This test show how to activate the push parser interface:</p> 4117 <pre>import libxml2 4118 4119 ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml") 4120 ctxt.parseChunk("/>", 2, 1) 4121 doc = ctxt.doc() 4122 4123 doc.freeDoc()</pre> 4124 4125 <p>The context is created with a special call based on the 4126 xmlCreatePushParser() from the C library. The first argument is an optional 4127 SAX callback object, then the initial set of data, the length and the name of 4128 the resource in case URI-References need to be computed by the parser.</p> 4129 4130 <p>Then the data are pushed using the parseChunk() method, the last call 4131 setting the third argument terminate to 1.</p> 4132 4133 <h3>pushSAX.py:</h3> 4134 4135 <p>this test show the use of the event based parsing interfaces. In this case 4136 the parser does not build a document, but provides callback information as 4137 the parser makes progresses analyzing the data being provided:</p> 4138 <pre>import libxml2 4139 log = "" 4140 4141 class callback: 4142 def startDocument(self): 4143 global log 4144 log = log + "startDocument:" 4145 4146 def endDocument(self): 4147 global log 4148 log = log + "endDocument:" 4149 4150 def startElement(self, tag, attrs): 4151 global log 4152 log = log + "startElement %s %s:" % (tag, attrs) 4153 4154 def endElement(self, tag): 4155 global log 4156 log = log + "endElement %s:" % (tag) 4157 4158 def characters(self, data): 4159 global log 4160 log = log + "characters: %s:" % (data) 4161 4162 def warning(self, msg): 4163 global log 4164 log = log + "warning: %s:" % (msg) 4165 4166 def error(self, msg): 4167 global log 4168 log = log + "error: %s:" % (msg) 4169 4170 def fatalError(self, msg): 4171 global log 4172 log = log + "fatalError: %s:" % (msg) 4173 4174 handler = callback() 4175 4176 ctxt = libxml2.createPushParser(handler, "<foo", 4, "test.xml") 4177 chunk = " url='tst'>b" 4178 ctxt.parseChunk(chunk, len(chunk), 0) 4179 chunk = "ar</foo>" 4180 ctxt.parseChunk(chunk, len(chunk), 1) 4181 4182 reference = "startDocument:startElement foo {'url': 'tst'}:" + \ 4183 "characters: bar:endElement foo:endDocument:" 4184 if log != reference: 4185 print "Error got: %s" % log 4186 print "Expected: %s" % reference</pre> 4187 4188 <p>The key object in that test is the handler, it provides a number of entry 4189 points which can be called by the parser as it makes progresses to indicate 4190 the information set obtained. The full set of callback is larger than what 4191 the callback class in that specific example implements (see the SAX 4192 definition for a complete list). The wrapper will only call those supplied by 4193 the object when activated. The startElement receives the names of the element 4194 and a dictionary containing the attributes carried by this element.</p> 4195 4196 <p>Also note that the reference string generated from the callback shows a 4197 single character call even though the string "bar" is passed to the parser 4198 from 2 different call to parseChunk()</p> 4199 4200 <h3>xpath.py:</h3> 4201 4202 <p>This is a basic test of XPath wrappers support</p> 4203 <pre>import libxml2 4204 4205 doc = libxml2.parseFile("tst.xml") 4206 ctxt = doc.xpathNewContext() 4207 res = ctxt.xpathEval("//*") 4208 if len(res) != 2: 4209 print "xpath query: wrong node set size" 4210 sys.exit(1) 4211 if res[0].name != "doc" or res[1].name != "foo": 4212 print "xpath query: wrong node set value" 4213 sys.exit(1) 4214 doc.freeDoc() 4215 ctxt.xpathFreeContext()</pre> 4216 4217 <p>This test parses a file, then create an XPath context to evaluate XPath 4218 expression on it. The xpathEval() method execute an XPath query and returns 4219 the result mapped in a Python way. String and numbers are natively converted, 4220 and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like 4221 the document, the XPath context need to be freed explicitly, also not that 4222 the result of the XPath query may point back to the document tree and hence 4223 the document must be freed after the result of the query is used.</p> 4224 4225 <h3>xpathext.py:</h3> 4226 4227 <p>This test shows how to extend the XPath engine with functions written in 4228 python:</p> 4229 <pre>import libxml2 4230 4231 def foo(ctx, x): 4232 return x + 1 4233 4234 doc = libxml2.parseFile("tst.xml") 4235 ctxt = doc.xpathNewContext() 4236 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo) 4237 res = ctxt.xpathEval("foo(1)") 4238 if res != 2: 4239 print "xpath extension failure" 4240 doc.freeDoc() 4241 ctxt.xpathFreeContext()</pre> 4242 4243 <p>Note how the extension function is registered with the context (but that 4244 part is not yet finalized, this may change slightly in the future).</p> 4245 4246 <h3>tstxpath.py:</h3> 4247 4248 <p>This test is similar to the previous one but shows how the extension 4249 function can access the XPath evaluation context:</p> 4250 <pre>def foo(ctx, x): 4251 global called 4252 4253 # 4254 # test that access to the XPath evaluation contexts 4255 # 4256 pctxt = libxml2.xpathParserContext(_obj=ctx) 4257 ctxt = pctxt.context() 4258 called = ctxt.function() 4259 return x + 1</pre> 4260 4261 <p>All the interfaces around the XPath parser(or rather evaluation) context 4262 are not finalized, but it should be sufficient to do contextual work at the 4263 evaluation point.</p> 4264 4265 <h3>Memory debugging:</h3> 4266 4267 <p>last but not least, all tests starts with the following prologue:</p> 4268 <pre>#memory debug specific 4269 libxml2.debugMemory(1)</pre> 4270 4271 <p>and ends with the following epilogue:</p> 4272 <pre>#memory debug specific 4273 libxml2.cleanupParser() 4274 if libxml2.debugMemory(1) == 0: 4275 print "OK" 4276 else: 4277 print "Memory leak %d bytes" % (libxml2.debugMemory(1)) 4278 libxml2.dumpMemory()</pre> 4279 4280 <p>Those activate the memory debugging interface of libxml2 where all 4281 allocated block in the library are tracked. The prologue then cleans up the 4282 library state and checks that all allocated memory has been freed. If not it 4283 calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p> 4284 4285 <h2><a name="architecture">libxml2 architecture</a></h2> 4286 4287 <p>Libxml2 is made of multiple components; some of them are optional, and 4288 most of the block interfaces are public. The main components are:</p> 4289 <ul> 4290 <li>an Input/Output layer</li> 4291 <li>FTP and HTTP client layers (optional)</li> 4292 <li>an Internationalization layer managing the encodings support</li> 4293 <li>a URI module</li> 4294 <li>the XML parser and its basic SAX interface</li> 4295 <li>an HTML parser using the same SAX interface (optional)</li> 4296 <li>a SAX tree module to build an in-memory DOM representation</li> 4297 <li>a tree module to manipulate the DOM representation</li> 4298 <li>a validation module using the DOM representation (optional)</li> 4299 <li>an XPath module for global lookup in a DOM representation 4300 (optional)</li> 4301 <li>a debug module (optional)</li> 4302 </ul> 4303 4304 <p>Graphically this gives the following:</p> 4305 4306 <p><img src="libxml.gif" alt="a graphical view of the various"></p> 4307 4308 <p></p> 4309 4310 <h2><a name="tree">The tree output</a></h2> 4311 4312 <p>The parser returns a tree built during the document analysis. The value 4313 returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an 4314 <strong>xmlDoc</strong> structure). This structure contains information such 4315 as the file name, the document type, and a <strong>children</strong> pointer 4316 which is the root of the document (or more exactly the first child under the 4317 root which is the document). The tree is made of <strong>xmlNode</strong>s, 4318 chained in double-linked lists of siblings and with a children<->parent 4319 relationship. An xmlNode can also carry properties (a chain of xmlAttr 4320 structures). An attribute may have a value which is a list of TEXT or 4321 ENTITY_REF nodes.</p> 4322 4323 <p>Here is an example (erroneous with respect to the XML spec since there 4324 should be only one ELEMENT under the root):</p> 4325 4326 <p><img src="structure.gif" alt=" structure.gif "></p> 4327 4328 <p>In the source package there is a small program (not installed by default) 4329 called <strong>xmllint</strong> which parses XML files given as argument and 4330 prints them back as parsed. This is useful for detecting errors both in XML 4331 code and in the XML parser itself. It has an option <strong>--debug</strong> 4332 which prints the actual in-memory structure of the document; here is the 4333 result with the <a href="#example">example</a> given before:</p> 4334 <pre>DOCUMENT 4335 version=1.0 4336 standalone=true 4337 ELEMENT EXAMPLE 4338 ATTRIBUTE prop1 4339 TEXT 4340 content=gnome is great 4341 ATTRIBUTE prop2 4342 ENTITY_REF 4343 TEXT 4344 content= linux too 4345 ELEMENT head 4346 ELEMENT title 4347 TEXT 4348 content=Welcome to Gnome 4349 ELEMENT chapter 4350 ELEMENT title 4351 TEXT 4352 content=The Linux adventure 4353 ELEMENT p 4354 TEXT 4355 content=bla bla bla ... 4356 ELEMENT image 4357 ATTRIBUTE href 4358 TEXT 4359 content=linus.gif 4360 ELEMENT p 4361 TEXT 4362 content=...</pre> 4363 4364 <p>This should be useful for learning the internal representation model.</p> 4365 4366 <h2><a name="interface">The SAX interface</a></h2> 4367 4368 <p>Sometimes the DOM tree output is just too large to fit reasonably into 4369 memory. In that case (and if you don't expect to save back the XML document 4370 loaded using libxml), it's better to use the SAX interface of libxml. SAX is 4371 a <strong>callback-based interface</strong> to the parser. Before parsing, 4372 the application layer registers a customized set of callbacks which are 4373 called by the library as it progresses through the XML input.</p> 4374 4375 <p>To get more detailed step-by-step guidance on using the SAX interface of 4376 libxml, see the <a 4377 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">nice 4378 documentation</a>.written by <a href="mailto:james@daa.com.au">James 4379 Henstridge</a>.</p> 4380 4381 <p>You can debug the SAX behaviour by using the <strong>testSAX</strong> 4382 program located in the gnome-xml module (it's usually not shipped in the 4383 binary packages of libxml, but you can find it in the tar source 4384 distribution). Here is the sequence of callbacks that would be reported by 4385 testSAX when parsing the example XML document shown earlier:</p> 4386 <pre>SAX.setDocumentLocator() 4387 SAX.startDocument() 4388 SAX.getEntity(amp) 4389 SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp; linux too') 4390 SAX.characters( , 3) 4391 SAX.startElement(head) 4392 SAX.characters( , 4) 4393 SAX.startElement(title) 4394 SAX.characters(Welcome to Gnome, 16) 4395 SAX.endElement(title) 4396 SAX.characters( , 3) 4397 SAX.endElement(head) 4398 SAX.characters( , 3) 4399 SAX.startElement(chapter) 4400 SAX.characters( , 4) 4401 SAX.startElement(title) 4402 SAX.characters(The Linux adventure, 19) 4403 SAX.endElement(title) 4404 SAX.characters( , 4) 4405 SAX.startElement(p) 4406 SAX.characters(bla bla bla ..., 15) 4407 SAX.endElement(p) 4408 SAX.characters( , 4) 4409 SAX.startElement(image, href='linus.gif') 4410 SAX.endElement(image) 4411 SAX.characters( , 4) 4412 SAX.startElement(p) 4413 SAX.characters(..., 3) 4414 SAX.endElement(p) 4415 SAX.characters( , 3) 4416 SAX.endElement(chapter) 4417 SAX.characters( , 1) 4418 SAX.endElement(EXAMPLE) 4419 SAX.endDocument()</pre> 4420 4421 <p>Most of the other interfaces of libxml2 are based on the DOM tree-building 4422 facility, so nearly everything up to the end of this document presupposes the 4423 use of the standard DOM tree build. Note that the DOM tree itself is built by 4424 a set of registered default callbacks, without internal specific 4425 interface.</p> 4426 4427 <h2><a name="Validation">Validation & DTDs</a></h2> 4428 4429 <p>Table of Content:</p> 4430 <ol> 4431 <li><a href="#General5">General overview</a></li> 4432 <li><a href="#definition">The definition</a></li> 4433 <li><a href="#Simple">Simple rules</a> 4434 <ol> 4435 <li><a href="#reference">How to reference a DTD from a document</a></li> 4436 <li><a href="#Declaring">Declaring elements</a></li> 4437 <li><a href="#Declaring1">Declaring attributes</a></li> 4438 </ol> 4439 </li> 4440 <li><a href="#Some">Some examples</a></li> 4441 <li><a href="#validate">How to validate</a></li> 4442 <li><a href="#Other">Other resources</a></li> 4443 </ol> 4444 4445 <h3><a name="General5">General overview</a></h3> 4446 4447 <p>Well what is validation and what is a DTD ?</p> 4448 4449 <p>DTD is the acronym for Document Type Definition. This is a description of 4450 the content for a family of XML files. This is part of the XML 1.0 4451 specification, and allows one to describe and verify that a given document 4452 instance conforms to the set of rules detailing its structure and content.</p> 4453 4454 <p>Validation is the process of checking a document against a DTD (more 4455 generally against a set of construction rules).</p> 4456 4457 <p>The validation process and building DTDs are the two most difficult parts 4458 of the XML life cycle. Briefly a DTD defines all the possible elements to be 4459 found within your document, what is the formal shape of your document tree 4460 (by defining the allowed content of an element; either text, a regular 4461 expression for the allowed list of children, or mixed content i.e. both text 4462 and children). The DTD also defines the valid attributes for all elements and 4463 the types of those attributes.</p> 4464 4465 <h3><a name="definition1">The definition</a></h3> 4466 4467 <p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a 4468 href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of 4469 Rev1</a>):</p> 4470 <ul> 4471 <li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring 4472 elements</a></li> 4473 <li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring 4474 attributes</a></li> 4475 </ul> 4476 4477 <p>(unfortunately) all this is inherited from the SGML world, the syntax is 4478 ancient...</p> 4479 4480 <h3><a name="Simple1">Simple rules</a></h3> 4481 4482 <p>Writing DTDs can be done in many ways. The rules to build them if you need 4483 something permanent or something which can evolve over time can be radically 4484 different. Really complex DTDs like DocBook ones are flexible but quite 4485 harder to design. I will just focus on DTDs for a formats with a fixed simple 4486 structure. It is just a set of basic rules, and definitely not exhaustive nor 4487 usable for complex DTD design.</p> 4488 4489 <h4><a name="reference1">How to reference a DTD from a document</a>:</h4> 4490 4491 <p>Assuming the top element of the document is <code>spec</code> and the dtd 4492 is placed in the file <code>mydtd</code> in the subdirectory 4493 <code>dtds</code> of the directory from where the document were loaded:</p> 4494 4495 <p><code><!DOCTYPE spec SYSTEM "dtds/mydtd"></code></p> 4496 4497 <p>Notes:</p> 4498 <ul> 4499 <li>The system string is actually an URI-Reference (as defined in <a 4500 href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a 4501 full URL string indicating the location of your DTD on the Web. This is a 4502 really good thing to do if you want others to validate your document.</li> 4503 <li>It is also possible to associate a <code>PUBLIC</code> identifier (a 4504 magic string) so that the DTD is looked up in catalogs on the client side 4505 without having to locate it on the web.</li> 4506 <li>A DTD contains a set of element and attribute declarations, but they 4507 don't define what the root of the document should be. This is explicitly 4508 told to the parser/validator as the first element of the 4509 <code>DOCTYPE</code> declaration.</li> 4510 </ul> 4511 4512 <h4><a name="Declaring2">Declaring elements</a>:</h4> 4513 4514 <p>The following declares an element <code>spec</code>:</p> 4515 4516 <p><code><!ELEMENT spec (front, body, back?)></code></p> 4517 4518 <p>It also expresses that the spec element contains one <code>front</code>, 4519 one <code>body</code> and one optional <code>back</code> children elements in 4520 this order. The declaration of one element of the structure and its content 4521 are done in a single declaration. Similarly the following declares 4522 <code>div1</code> elements:</p> 4523 4524 <p><code><!ELEMENT div1 (head, (p | list | note)*, div2?)></code></p> 4525 4526 <p>which means div1 contains one <code>head</code> then a series of optional 4527 <code>p</code>, <code>list</code>s and <code>note</code>s and then an 4528 optional <code>div2</code>. And last but not least an element can contain 4529 text:</p> 4530 4531 <p><code><!ELEMENT b (#PCDATA)></code></p> 4532 4533 <p><code>b</code> contains text or being of mixed content (text and elements 4534 in no particular order):</p> 4535 4536 <p><code><!ELEMENT p (#PCDATA|a|ul|b|i|em)*></code></p> 4537 4538 <p><code>p </code>can contain text or <code>a</code>, <code>ul</code>, 4539 <code>b</code>, <code>i </code>or <code>em</code> elements in no particular 4540 order.</p> 4541 4542 <h4><a name="Declaring1">Declaring attributes</a>:</h4> 4543 4544 <p>Again the attributes declaration includes their content definition:</p> 4545 4546 <p><code><!ATTLIST termdef name CDATA #IMPLIED></code></p> 4547 4548 <p>means that the element <code>termdef</code> can have a <code>name</code> 4549 attribute containing text (<code>CDATA</code>) and which is optional 4550 (<code>#IMPLIED</code>). The attribute value can also be defined within a 4551 set:</p> 4552 4553 <p><code><!ATTLIST list type (bullets|ordered|glossary) 4554 "ordered"></code></p> 4555 4556 <p>means <code>list</code> element have a <code>type</code> attribute with 3 4557 allowed values "bullets", "ordered" or "glossary" and which default to 4558 "ordered" if the attribute is not explicitly specified.</p> 4559 4560 <p>The content type of an attribute can be text (<code>CDATA</code>), 4561 anchor/reference/references 4562 (<code>ID</code>/<code>IDREF</code>/<code>IDREFS</code>), entity(ies) 4563 (<code>ENTITY</code>/<code>ENTITIES</code>) or name(s) 4564 (<code>NMTOKEN</code>/<code>NMTOKENS</code>). The following defines that a 4565 <code>chapter</code> element can have an optional <code>id</code> attribute 4566 of type <code>ID</code>, usable for reference from attribute of type 4567 IDREF:</p> 4568 4569 <p><code><!ATTLIST chapter id ID #IMPLIED></code></p> 4570 4571 <p>The last value of an attribute definition can be <code>#REQUIRED 4572 </code>meaning that the attribute has to be given, <code>#IMPLIED</code> 4573 meaning that it is optional, or the default value (possibly prefixed by 4574 <code>#FIXED</code> if it is the only allowed).</p> 4575 4576 <p>Notes:</p> 4577 <ul> 4578 <li>Usually the attributes pertaining to a given element are declared in a 4579 single expression, but it is just a convention adopted by a lot of DTD 4580 writers: 4581 <pre><!ATTLIST termdef 4582 id ID #REQUIRED 4583 name CDATA #IMPLIED></pre> 4584 <p>The previous construct defines both <code>id</code> and 4585 <code>name</code> attributes for the element <code>termdef</code>.</p> 4586 </li> 4587 </ul> 4588 4589 <h3><a name="Some1">Some examples</a></h3> 4590 4591 <p>The directory <code>test/valid/dtds/</code> in the libxml2 distribution 4592 contains some complex DTD examples. The example in the file 4593 <code>test/valid/dia.xml</code> shows an XML file where the simple DTD is 4594 directly included within the document.</p> 4595 4596 <h3><a name="validate1">How to validate</a></h3> 4597 4598 <p>The simplest way is to use the xmllint program included with libxml. The 4599 <code>--valid</code> option turns-on validation of the files given as input. 4600 For example the following validates a copy of the first revision of the XML 4601 1.0 specification:</p> 4602 4603 <p><code>xmllint --valid --noout test/valid/REC-xml-19980210.xml</code></p> 4604 4605 <p>the -- noout is used to disable output of the resulting tree.</p> 4606 4607 <p>The <code>--dtdvalid dtd</code> allows validation of the document(s) 4608 against a given DTD.</p> 4609 4610 <p>Libxml2 exports an API to handle DTDs and validation, check the <a 4611 href="http://xmlsoft.org/html/libxml-valid.html">associated 4612 description</a>.</p> 4613 4614 <h3><a name="Other1">Other resources</a></h3> 4615 4616 <p>DTDs are as old as SGML. So there may be a number of examples on-line, I 4617 will just list one for now, others pointers welcome:</p> 4618 <ul> 4619 <li><a href="http://www.xml101.com:8081/dtd/">XML-101 DTD</a></li> 4620 </ul> 4621 4622 <p>I suggest looking at the examples found under test/valid/dtd and any of 4623 the large number of books available on XML. The dia example in test/valid 4624 should be both simple and complete enough to allow you to build your own.</p> 4625 4626 <p></p> 4627 4628 <h2><a name="Memory">Memory Management</a></h2> 4629 4630 <p>Table of Content:</p> 4631 <ol> 4632 <li><a href="#General3">General overview</a></li> 4633 <li><a href="#setting">Setting libxml2 set of memory routines</a></li> 4634 <li><a href="#cleanup">Cleaning up after using the library</a></li> 4635 <li><a href="#Debugging">Debugging routines</a></li> 4636 <li><a href="#General4">General memory requirements</a></li> 4637 <li><a href="#Compacting">Returning memory to the kernel</a></li> 4638 </ol> 4639 4640 <h3><a name="General3">General overview</a></h3> 4641 4642 <p>The module <code><a 4643 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlmemory.h</a></code> 4644 provides the interfaces to the libxml2 memory system:</p> 4645 <ul> 4646 <li>libxml2 does not use the libc memory allocator directly but xmlFree(), 4647 xmlMalloc() and xmlRealloc()</li> 4648 <li>those routines can be reallocated to a specific set of routine, by 4649 default the libc ones i.e. free(), malloc() and realloc()</li> 4650 <li>the xmlmemory.c module includes a set of debugging routine</li> 4651 </ul> 4652 4653 <h3><a name="setting">Setting libxml2 set of memory routines</a></h3> 4654 4655 <p>It is sometimes useful to not use the default memory allocator, either for 4656 debugging, analysis or to implement a specific behaviour on memory management 4657 (like on embedded systems). Two function calls are available to do so:</p> 4658 <ul> 4659 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemGet 4660 ()</a> which return the current set of functions in use by the parser</li> 4661 <li><a 4662 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemSetup()</a> 4663 which allow to set up a new set of memory allocation functions</li> 4664 </ul> 4665 4666 <p>Of course a call to xmlMemSetup() should probably be done before calling 4667 any other libxml2 routines (unless you are sure your allocations routines are 4668 compatibles).</p> 4669 4670 <h3><a name="cleanup">Cleaning up after using the library</a></h3> 4671 4672 <p>Libxml2 is not stateless, there is a few set of memory structures needing 4673 allocation before the parser is fully functional (some encoding structures 4674 for example). This also mean that once parsing is finished there is a tiny 4675 amount of memory (a few hundred bytes) which can be recollected if you don't 4676 reuse the library or any document built with it:</p> 4677 <ul> 4678 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlCleanupParser 4679 ()</a> is a centralized routine to free the library state and data. Note 4680 that it won't deallocate any produced tree if any (use the xmlFreeDoc() 4681 and related routines for this). This should be called only when the library 4682 is not used anymore.</li> 4683 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlInitParser 4684 ()</a> is the dual routine allowing to preallocate the parsing state 4685 which can be useful for example to avoid initialization reentrancy 4686 problems when using libxml2 in multithreaded applications</li> 4687 </ul> 4688 4689 <p>Generally xmlCleanupParser() is safe assuming no parsing is ongoing and 4690 no document is still being used, if needed the state will be rebuild at the 4691 next invocation of parser routines (or by xmlInitParser()), but be careful 4692 of the consequences in multithreaded applications.</p> 4693 4694 <h3><a name="Debugging">Debugging routines</a></h3> 4695 4696 <p>When configured using --with-mem-debug flag (off by default), libxml2 uses 4697 a set of memory allocation debugging routines keeping track of all allocated 4698 blocks and the location in the code where the routine was called. A couple of 4699 other debugging routines allow to dump the memory allocated infos to a file 4700 or call a specific routine when a given block number is allocated:</p> 4701 <ul> 4702 <li><a 4703 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMallocLoc()</a> 4704 <a 4705 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlReallocLoc()</a> 4706 and <a 4707 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemStrdupLoc()</a> 4708 are the memory debugging replacement allocation routines</li> 4709 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemoryDump 4710 ()</a> dumps all the information about the allocated memory block lefts 4711 in the <code>.memdump</code> file</li> 4712 </ul> 4713 4714 <p>When developing libxml2 memory debug is enabled, the tests programs call 4715 xmlMemoryDump () and the "make test" regression tests will check for any 4716 memory leak during the full regression test sequence, this helps a lot 4717 ensuring that libxml2 does not leak memory and bullet proof memory 4718 allocations use (some libc implementations are known to be far too permissive 4719 resulting in major portability problems!).</p> 4720 4721 <p>If the .memdump reports a leak, it displays the allocation function and 4722 also tries to give some information about the content and structure of the 4723 allocated blocks left. This is sufficient in most cases to find the culprit, 4724 but not always. Assuming the allocation problem is reproducible, it is 4725 possible to find more easily:</p> 4726 <ol> 4727 <li>write down the block number xxxx not allocated</li> 4728 <li>export the environment variable XML_MEM_BREAKPOINT=xxxx , the easiest 4729 when using GDB is to simply give the command 4730 <p><code>set environment XML_MEM_BREAKPOINT xxxx</code></p> 4731 <p>before running the program.</p> 4732 </li> 4733 <li>run the program under a debugger and set a breakpoint on 4734 xmlMallocBreakpoint() a specific function called when this precise block 4735 is allocated</li> 4736 <li>when the breakpoint is reached you can then do a fine analysis of the 4737 allocation an step to see the condition resulting in the missing 4738 deallocation.</li> 4739 </ol> 4740 4741 <p>I used to use a commercial tool to debug libxml2 memory problems but after 4742 noticing that it was not detecting memory leaks that simple mechanism was 4743 used and proved extremely efficient until now. Lately I have also used <a 4744 href="http://developer.kde.org/~sewardj/">valgrind</a> with quite some 4745 success, it is tied to the i386 architecture since it works by emulating the 4746 processor and instruction set, it is slow but extremely efficient, i.e. it 4747 spot memory usage errors in a very precise way.</p> 4748 4749 <h3><a name="General4">General memory requirements</a></h3> 4750 4751 <p>How much libxml2 memory require ? It's hard to tell in average it depends 4752 of a number of things:</p> 4753 <ul> 4754 <li>the parser itself should work in a fixed amount of memory, except for 4755 information maintained about the stacks of names and entities locations. 4756 The I/O and encoding handlers will probably account for a few KBytes. 4757 This is true for both the XML and HTML parser (though the HTML parser 4758 need more state).</li> 4759 <li>If you are generating the DOM tree then memory requirements will grow 4760 nearly linear with the size of the data. In general for a balanced 4761 textual document the internal memory requirement is about 4 times the 4762 size of the UTF8 serialization of this document (example the XML-1.0 4763 recommendation is a bit more of 150KBytes and takes 650KBytes of main 4764 memory when parsed). Validation will add a amount of memory required for 4765 maintaining the external Dtd state which should be linear with the 4766 complexity of the content model defined by the Dtd</li> 4767 <li>If you need to work with fixed memory requirements or don't need the 4768 full DOM tree then using the <a href="xmlreader.html">xmlReader 4769 interface</a> is probably the best way to proceed, it still allows to 4770 validate or operate on subset of the tree if needed.</li> 4771 <li>If you don't care about the advanced features of libxml2 like 4772 validation, DOM, XPath or XPointer, don't use entities, need to work with 4773 fixed memory requirements, and try to get the fastest parsing possible 4774 then the SAX interface should be used, but it has known restrictions.</li> 4775 </ul> 4776 4777 <p></p> 4778 <h3><a name="Compacting">Returning memory to the kernel</a></h3> 4779 4780 <p>You may encounter that your process using libxml2 does not have a 4781 reduced memory usage although you freed the trees. This is because 4782 libxml2 allocates memory in a number of small chunks. When freeing one 4783 of those chunks, the OS may decide that giving this little memory back 4784 to the kernel will cause too much overhead and delay the operation. As 4785 all chunks are this small, they get actually freed but not returned to 4786 the kernel. On systems using glibc, there is a function call 4787 "malloc_trim" from malloc.h which does this missing operation (note that 4788 it is allowed to fail). Thus, after freeing your tree you may simply try 4789 "malloc_trim(0);" to really get the memory back. If your OS does not 4790 provide malloc_trim, try searching for a similar function.</p> 4791 <p></p> 4792 4793 <h2><a name="Encodings">Encodings support</a></h2> 4794 4795 <p>If you are not really familiar with Internationalization (usual shortcut 4796 is I18N) , Unicode, characters and glyphs, I suggest you read a <a 4797 href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode">presentation</a> 4798 by Tim Bray on Unicode and why you should care about it.</p> 4799 4800 <p>If you don't understand why <b>it does not make sense to have a string 4801 without knowing what encoding it uses</b>, then as Joel Spolsky said <a 4802 href="http://www.joelonsoftware.com/articles/Unicode.html">please do not 4803 write another line of code until you finish reading that article.</a>. It is 4804 a prerequisite to understand this page, and avoid a lot of problems with 4805 libxml2, XML or text processing in general.</p> 4806 4807 <p>Table of Content:</p> 4808 <ol> 4809 <li><a href="encoding.html#What">What does internationalization support 4810 mean ?</a></li> 4811 <li><a href="encoding.html#internal">The internal encoding, how and 4812 why</a></li> 4813 <li><a href="encoding.html#implemente">How is it implemented ?</a></li> 4814 <li><a href="encoding.html#Default">Default supported encodings</a></li> 4815 <li><a href="encoding.html#extend">How to extend the existing 4816 support</a></li> 4817 </ol> 4818 4819 <h3><a name="What">What does internationalization support mean ?</a></h3> 4820 4821 <p>XML was designed from the start to allow the support of any character set 4822 by using Unicode. Any conformant XML parser has to support the UTF-8 and 4823 UTF-16 default encodings which can both express the full unicode ranges. UTF8 4824 is a variable length encoding whose greatest points are to reuse the same 4825 encoding for ASCII and to save space for Western encodings, but it is a bit 4826 more complex to handle in practice. UTF-16 use 2 bytes per character (and 4827 sometimes combines two pairs), it makes implementation easier, but looks a 4828 bit overkill for Western languages encoding. Moreover the XML specification 4829 allows the document to be encoded in other encodings at the condition that 4830 they are clearly labeled as such. For example the following is a wellformed 4831 XML document encoded in ISO-8859-1 and using accentuated letters that we 4832 French like for both markup and content:</p> 4833 <pre><?xml version="1.0" encoding="ISO-8859-1"?> 4834 <très>là </très></pre> 4835 4836 <p>Having internationalization support in libxml2 means the following:</p> 4837 <ul> 4838 <li>the document is properly parsed</li> 4839 <li>information about it's encoding is saved</li> 4840 <li>it can be modified</li> 4841 <li>it can be saved in its original encoding</li> 4842 <li>it can also be saved in another encoding supported by libxml2 (for 4843 example straight UTF8 or even an ASCII form)</li> 4844 </ul> 4845 4846 <p>Another very important point is that the whole libxml2 API, with the 4847 exception of a few routines to read with a specific encoding or save to a 4848 specific encoding, is completely agnostic about the original encoding of the 4849 document.</p> 4850 4851 <p>It should be noted too that the HTML parser embedded in libxml2 now obey 4852 the same rules too, the following document will be (as of 2.2.2) handled in 4853 an internationalized fashion by libxml2 too:</p> 4854 <pre><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" 4855 "http://www.w3.org/TR/REC-html40/loose.dtd"> 4856 <html lang="fr"> 4857 <head> 4858 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"> 4859 </head> 4860 <body> 4861 <p>W3C crée des standards pour le Web.</body> 4862 </html></pre> 4863 4864 <h3><a name="internal">The internal encoding, how and why</a></h3> 4865 4866 <p>One of the core decisions was to force all documents to be converted to a 4867 default internal encoding, and that encoding to be UTF-8, here are the 4868 rationales for those choices:</p> 4869 <ul> 4870 <li>keeping the native encoding in the internal form would force the libxml 4871 users (or the code associated) to be fully aware of the encoding of the 4872 original document, for examples when adding a text node to a document, 4873 the content would have to be provided in the document encoding, i.e. the 4874 client code would have to check it before hand, make sure it's conformant 4875 to the encoding, etc ... Very hard in practice, though in some specific 4876 cases this may make sense.</li> 4877 <li>the second decision was which encoding. From the XML spec only UTF8 and 4878 UTF16 really makes sense as being the two only encodings for which there 4879 is mandatory support. UCS-4 (32 bits fixed size encoding) could be 4880 considered an intelligent choice too since it's a direct Unicode mapping 4881 support. I selected UTF-8 on the basis of efficiency and compatibility 4882 with surrounding software: 4883 <ul> 4884 <li>UTF-8 while a bit more complex to convert from/to (i.e. slightly 4885 more costly to import and export CPU wise) is also far more compact 4886 than UTF-16 (and UCS-4) for a majority of the documents I see it used 4887 for right now (RPM RDF catalogs, advogato data, various configuration 4888 file formats, etc.) and the key point for today's computer 4889 architecture is efficient uses of caches. If one nearly double the 4890 memory requirement to store the same amount of data, this will trash 4891 caches (main memory/external caches/internal caches) and my take is 4892 that this harms the system far more than the CPU requirements needed 4893 for the conversion to UTF-8</li> 4894 <li>Most of libxml2 version 1 users were using it with straight ASCII 4895 most of the time, doing the conversion with an internal encoding 4896 requiring all their code to be rewritten was a serious show-stopper 4897 for using UTF-16 or UCS-4.</li> 4898 <li>UTF-8 is being used as the de-facto internal encoding standard for 4899 related code like the <a href="http://www.pango.org/">pango</a> 4900 upcoming Gnome text widget, and a lot of Unix code (yet another place 4901 where Unix programmer base takes a different approach from Microsoft 4902 - they are using UTF-16)</li> 4903 </ul> 4904 </li> 4905 </ul> 4906 4907 <p>What does this mean in practice for the libxml2 user:</p> 4908 <ul> 4909 <li>xmlChar, the libxml2 data type is a byte, those bytes must be assembled 4910 as UTF-8 valid strings. The proper way to terminate an xmlChar * string 4911 is simply to append 0 byte, as usual.</li> 4912 <li>One just need to make sure that when using chars outside the ASCII set, 4913 the values has been properly converted to UTF-8</li> 4914 </ul> 4915 4916 <h3><a name="implemente">How is it implemented ?</a></h3> 4917 4918 <p>Let's describe how all this works within libxml, basically the I18N 4919 (internationalization) support get triggered only during I/O operation, i.e. 4920 when reading a document or saving one. Let's look first at the reading 4921 sequence:</p> 4922 <ol> 4923 <li>when a document is processed, we usually don't know the encoding, a 4924 simple heuristic allows to detect UTF-16 and UCS-4 from encodings where 4925 the ASCII range (0-0x7F) maps with ASCII</li> 4926 <li>the xml declaration if available is parsed, including the encoding 4927 declaration. At that point, if the autodetected encoding is different 4928 from the one declared a call to xmlSwitchEncoding() is issued.</li> 4929 <li>If there is no encoding declaration, then the input has to be in either 4930 UTF-8 or UTF-16, if it is not then at some point when processing the 4931 input, the converter/checker of UTF-8 form will raise an encoding error. 4932 You may end-up with a garbled document, or no document at all ! Example: 4933 <pre>~/XML -> ./xmllint err.xml 4934 err.xml:1: error: Input is not proper UTF-8, indicate encoding ! 4935 <très>là </très> 4936 ^ 4937 err.xml:1: error: Bytes: 0xE8 0x73 0x3E 0x6C 4938 <très>là </très> 4939 ^</pre> 4940 </li> 4941 <li>xmlSwitchEncoding() does an encoding name lookup, canonicalize it, and 4942 then search the default registered encoding converters for that encoding. 4943 If it's not within the default set and iconv() support has been compiled 4944 it, it will ask iconv for such an encoder. If this fails then the parser 4945 will report an error and stops processing: 4946 <pre>~/XML -> ./xmllint err2.xml 4947 err2.xml:1: error: Unsupported encoding UnsupportedEnc 4948 <?xml version="1.0" encoding="UnsupportedEnc"?> 4949 ^</pre> 4950 </li> 4951 <li>From that point the encoder processes progressively the input (it is 4952 plugged as a front-end to the I/O module) for that entity. It captures 4953 and converts on-the-fly the document to be parsed to UTF-8. The parser 4954 itself just does UTF-8 checking of this input and process it 4955 transparently. The only difference is that the encoding information has 4956 been added to the parsing context (more precisely to the input 4957 corresponding to this entity).</li> 4958 <li>The result (when using DOM) is an internal form completely in UTF-8 4959 with just an encoding information on the document node.</li> 4960 </ol> 4961 4962 <p>Ok then what happens when saving the document (assuming you 4963 collected/built an xmlDoc DOM like structure) ? It depends on the function 4964 called, xmlSaveFile() will just try to save in the original encoding, while 4965 xmlSaveFileTo() and xmlSaveFileEnc() can optionally save to a given 4966 encoding:</p> 4967 <ol> 4968 <li>if no encoding is given, libxml2 will look for an encoding value 4969 associated to the document and if it exists will try to save to that 4970 encoding, 4971 <p>otherwise everything is written in the internal form, i.e. UTF-8</p> 4972 </li> 4973 <li>so if an encoding was specified, either at the API level or on the 4974 document, libxml2 will again canonicalize the encoding name, lookup for a 4975 converter in the registered set or through iconv. If not found the 4976 function will return an error code</li> 4977 <li>the converter is placed before the I/O buffer layer, as another kind of 4978 buffer, then libxml2 will simply push the UTF-8 serialization to through 4979 that buffer, which will then progressively be converted and pushed onto 4980 the I/O layer.</li> 4981 <li>It is possible that the converter code fails on some input, for example 4982 trying to push an UTF-8 encoded Chinese character through the UTF-8 to 4983 ISO-8859-1 converter won't work. Since the encoders are progressive they 4984 will just report the error and the number of bytes converted, at that 4985 point libxml2 will decode the offending character, remove it from the 4986 buffer and replace it with the associated charRef encoding &#123; and 4987 resume the conversion. This guarantees that any document will be saved 4988 without losses (except for markup names where this is not legal, this is 4989 a problem in the current version, in practice avoid using non-ascii 4990 characters for tag or attribute names). A special "ascii" encoding name 4991 is used to save documents to a pure ascii form can be used when 4992 portability is really crucial</li> 4993 </ol> 4994 4995 <p>Here are a few examples based on the same test document and assumin a 4996 terminal using ISO-8859-1 as the text encoding:</p> 4997 <pre>~/XML -> ./xmllint isolat1 4998 <?xml version="1.0" encoding="ISO-8859-1"?> 4999 <très>là </très> 5000 ~/XML -> ./xmllint --encode UTF-8 isolat1 5001 <?xml version="1.0" encoding="UTF-8"?> 5002 <très>là </très> 5003 ~/XML -> </pre> 5004 5005 <p>The same processing is applied (and reuse most of the code) for HTML I18N 5006 processing. Looking up and modifying the content encoding is a bit more 5007 difficult since it is located in a <meta> tag under the <head>, 5008 so a couple of functions htmlGetMetaEncoding() and htmlSetMetaEncoding() have 5009 been provided. The parser also attempts to switch encoding on the fly when 5010 detecting such a tag on input. Except for that the processing is the same 5011 (and again reuses the same code).</p> 5012 5013 <h3><a name="Default">Default supported encodings</a></h3> 5014 5015 <p>libxml2 has a set of default converters for the following encodings 5016 (located in encoding.c):</p> 5017 <ol> 5018 <li>UTF-8 is supported by default (null handlers)</li> 5019 <li>UTF-16, both little and big endian</li> 5020 <li>ISO-Latin-1 (ISO-8859-1) covering most western languages</li> 5021 <li>ASCII, useful mostly for saving</li> 5022 <li>HTML, a specific handler for the conversion of UTF-8 to ASCII with HTML 5023 predefined entities like &copy; for the Copyright sign.</li> 5024 </ol> 5025 5026 <p>More over when compiled on an Unix platform with iconv support the full 5027 set of encodings supported by iconv can be instantly be used by libxml. On a 5028 linux machine with glibc-2.1 the list of supported encodings and aliases fill 5029 3 full pages, and include UCS-4, the full set of ISO-Latin encodings, and the 5030 various Japanese ones.</p> 5031 5032 <p>To convert from the UTF-8 values returned from the API to another encoding 5033 then it is possible to use the function provided from <a 5034 href="html/libxml-encoding.html">the encoding module</a> like <a 5035 href="html/libxml-encoding.html#UTF8Toisolat1">UTF8Toisolat1</a>, or use the 5036 POSIX <a 5037 href="http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html">iconv()</a> 5038 API directly.</p> 5039 5040 <h4>Encoding aliases</h4> 5041 5042 <p>From 2.2.3, libxml2 has support to register encoding names aliases. The 5043 goal is to be able to parse document whose encoding is supported but where 5044 the name differs (for example from the default set of names accepted by 5045 iconv). The following functions allow to register and handle new aliases for 5046 existing encodings. Once registered libxml2 will automatically lookup the 5047 aliases when handling a document:</p> 5048 <ul> 5049 <li>int xmlAddEncodingAlias(const char *name, const char *alias);</li> 5050 <li>int xmlDelEncodingAlias(const char *alias);</li> 5051 <li>const char * xmlGetEncodingAlias(const char *alias);</li> 5052 <li>void xmlCleanupEncodingAliases(void);</li> 5053 </ul> 5054 5055 <h3><a name="extend">How to extend the existing support</a></h3> 5056 5057 <p>Well adding support for new encoding, or overriding one of the encoders 5058 (assuming it is buggy) should not be hard, just write input and output 5059 conversion routines to/from UTF-8, and register them using 5060 xmlNewCharEncodingHandler(name, xxxToUTF8, UTF8Toxxx), and they will be 5061 called automatically if the parser(s) encounter such an encoding name 5062 (register it uppercase, this will help). The description of the encoders, 5063 their arguments and expected return values are described in the encoding.h 5064 header.</p> 5065 5066 <h2><a name="IO">I/O Interfaces</a></h2> 5067 5068 <p>Table of Content:</p> 5069 <ol> 5070 <li><a href="#General1">General overview</a></li> 5071 <li><a href="#basic">The basic buffer type</a></li> 5072 <li><a href="#Input">Input I/O handlers</a></li> 5073 <li><a href="#Output">Output I/O handlers</a></li> 5074 <li><a href="#entities">The entities loader</a></li> 5075 <li><a href="#Example2">Example of customized I/O</a></li> 5076 </ol> 5077 5078 <h3><a name="General1">General overview</a></h3> 5079 5080 <p>The module <code><a 5081 href="http://xmlsoft.org/html/libxml-xmlio.html">xmlIO.h</a></code> provides 5082 the interfaces to the libxml2 I/O system. This consists of 4 main parts:</p> 5083 <ul> 5084 <li>Entities loader, this is a routine which tries to fetch the entities 5085 (files) based on their PUBLIC and SYSTEM identifiers. The default loader 5086 don't look at the public identifier since libxml2 do not maintain a 5087 catalog. You can redefine you own entity loader by using 5088 <code>xmlGetExternalEntityLoader()</code> and 5089 <code>xmlSetExternalEntityLoader()</code>. <a href="#entities">Check the 5090 example</a>.</li> 5091 <li>Input I/O buffers which are a commodity structure used by the parser(s) 5092 input layer to handle fetching the information to feed the parser. This 5093 provides buffering and is also a placeholder where the encoding 5094 converters to UTF8 are piggy-backed.</li> 5095 <li>Output I/O buffers are similar to the Input ones and fulfill similar 5096 task but when generating a serialization from a tree.</li> 5097 <li>A mechanism to register sets of I/O callbacks and associate them with 5098 specific naming schemes like the protocol part of the URIs. 5099 <p>This affect the default I/O operations and allows to use specific I/O 5100 handlers for certain names.</p> 5101 </li> 5102 </ul> 5103 5104 <p>The general mechanism used when loading http://rpmfind.net/xml.html for 5105 example in the HTML parser is the following:</p> 5106 <ol> 5107 <li>The default entity loader calls <code>xmlNewInputFromFile()</code> with 5108 the parsing context and the URI string.</li> 5109 <li>the URI string is checked against the existing registered handlers 5110 using their match() callback function, if the HTTP module was compiled 5111 in, it is registered and its match() function will succeeds</li> 5112 <li>the open() function of the handler is called and if successful will 5113 return an I/O Input buffer</li> 5114 <li>the parser will the start reading from this buffer and progressively 5115 fetch information from the resource, calling the read() function of the 5116 handler until the resource is exhausted</li> 5117 <li>if an encoding change is detected it will be installed on the input 5118 buffer, providing buffering and efficient use of the conversion 5119 routines</li> 5120 <li>once the parser has finished, the close() function of the handler is 5121 called once and the Input buffer and associated resources are 5122 deallocated.</li> 5123 </ol> 5124 5125 <p>The user defined callbacks are checked first to allow overriding of the 5126 default libxml2 I/O routines.</p> 5127 5128 <h3><a name="basic">The basic buffer type</a></h3> 5129 5130 <p>All the buffer manipulation handling is done using the 5131 <code>xmlBuffer</code> type define in <code><a 5132 href="http://xmlsoft.org/html/libxml-tree.html">tree.h</a> </code>which is a 5133 resizable memory buffer. The buffer allocation strategy can be selected to be 5134 either best-fit or use an exponential doubling one (CPU vs. memory use 5135 trade-off). The values are <code>XML_BUFFER_ALLOC_EXACT</code> and 5136 <code>XML_BUFFER_ALLOC_DOUBLEIT</code>, and can be set individually or on a 5137 system wide basis using <code>xmlBufferSetAllocationScheme()</code>. A number 5138 of functions allows to manipulate buffers with names starting with the 5139 <code>xmlBuffer...</code> prefix.</p> 5140 5141 <h3><a name="Input">Input I/O handlers</a></h3> 5142 5143 <p>An Input I/O handler is a simple structure 5144 <code>xmlParserInputBuffer</code> containing a context associated to the 5145 resource (file descriptor, or pointer to a protocol handler), the read() and 5146 close() callbacks to use and an xmlBuffer. And extra xmlBuffer and a charset 5147 encoding handler are also present to support charset conversion when 5148 needed.</p> 5149 5150 <h3><a name="Output">Output I/O handlers</a></h3> 5151 5152 <p>An Output handler <code>xmlOutputBuffer</code> is completely similar to an 5153 Input one except the callbacks are write() and close().</p> 5154 5155 <h3><a name="entities">The entities loader</a></h3> 5156 5157 <p>The entity loader resolves requests for new entities and create inputs for 5158 the parser. Creating an input from a filename or an URI string is done 5159 through the xmlNewInputFromFile() routine. The default entity loader do not 5160 handle the PUBLIC identifier associated with an entity (if any). So it just 5161 calls xmlNewInputFromFile() with the SYSTEM identifier (which is mandatory in 5162 XML).</p> 5163 5164 <p>If you want to hook up a catalog mechanism then you simply need to 5165 override the default entity loader, here is an example:</p> 5166 <pre>#include <libxml/xmlIO.h> 5167 5168 xmlExternalEntityLoader defaultLoader = NULL; 5169 5170 xmlParserInputPtr 5171 xmlMyExternalEntityLoader(const char *URL, const char *ID, 5172 xmlParserCtxtPtr ctxt) { 5173 xmlParserInputPtr ret; 5174 const char *fileID = NULL; 5175 /* lookup for the fileID depending on ID */ 5176 5177 ret = xmlNewInputFromFile(ctxt, fileID); 5178 if (ret != NULL) 5179 return(ret); 5180 if (defaultLoader != NULL) 5181 ret = defaultLoader(URL, ID, ctxt); 5182 return(ret); 5183 } 5184 5185 int main(..) { 5186 ... 5187 5188 /* 5189 * Install our own entity loader 5190 */ 5191 defaultLoader = xmlGetExternalEntityLoader(); 5192 xmlSetExternalEntityLoader(xmlMyExternalEntityLoader); 5193 5194 ... 5195 }</pre> 5196 5197 <h3><a name="Example2">Example of customized I/O</a></h3> 5198 5199 <p>This example come from <a href="http://xmlsoft.org/messages/0708.html">a 5200 real use case</a>, xmlDocDump() closes the FILE * passed by the application 5201 and this was a problem. The <a 5202 href="http://xmlsoft.org/messages/0711.html">solution</a> was to redefine a 5203 new output handler with the closing call deactivated:</p> 5204 <ol> 5205 <li>First define a new I/O output allocator where the output don't close 5206 the file: 5207 <pre>xmlOutputBufferPtr 5208 xmlOutputBufferCreateOwn(FILE *file, xmlCharEncodingHandlerPtr encoder) { 5209 xmlOutputBufferPtr ret; 5210 5211 if (xmlOutputCallbackInitialized == 0) 5212 xmlRegisterDefaultOutputCallbacks(); 5213 5214 if (file == NULL) return(NULL); 5215 ret = xmlAllocOutputBuffer(encoder); 5216 if (ret != NULL) { 5217 ret->context = file; 5218 ret->writecallback = xmlFileWrite; 5219 ret->closecallback = NULL; /* No close callback */ 5220 } 5221 return(ret); 5222 } </pre> 5223 </li> 5224 <li>And then use it to save the document: 5225 <pre>FILE *f; 5226 xmlOutputBufferPtr output; 5227 xmlDocPtr doc; 5228 int res; 5229 5230 f = ... 5231 doc = .... 5232 5233 output = xmlOutputBufferCreateOwn(f, NULL); 5234 res = xmlSaveFileTo(output, doc, NULL); 5235 </pre> 5236 </li> 5237 </ol> 5238 5239 <h2><a name="Catalog">Catalog support</a></h2> 5240 5241 <p>Table of Content:</p> 5242 <ol> 5243 <li><a href="General2">General overview</a></li> 5244 <li><a href="#definition">The definition</a></li> 5245 <li><a href="#Simple">Using catalogs</a></li> 5246 <li><a href="#Some">Some examples</a></li> 5247 <li><a href="#reference">How to tune catalog usage</a></li> 5248 <li><a href="#validate">How to debug catalog processing</a></li> 5249 <li><a href="#Declaring">How to create and maintain catalogs</a></li> 5250 <li><a href="#implemento">The implementor corner quick review of the 5251 API</a></li> 5252 <li><a href="#Other">Other resources</a></li> 5253 </ol> 5254 5255 <h3><a name="General2">General overview</a></h3> 5256 5257 <p>What is a catalog? Basically it's a lookup mechanism used when an entity 5258 (a file or a remote resource) references another entity. The catalog lookup 5259 is inserted between the moment the reference is recognized by the software 5260 (XML parser, stylesheet processing, or even images referenced for inclusion 5261 in a rendering) and the time where loading that resource is actually 5262 started.</p> 5263 5264 <p>It is basically used for 3 things:</p> 5265 <ul> 5266 <li>mapping from "logical" names, the public identifiers and a more 5267 concrete name usable for download (and URI). For example it can associate 5268 the logical name 5269 <p>"-//OASIS//DTD DocBook XML V4.1.2//EN"</p> 5270 <p>of the DocBook 4.1.2 XML DTD with the actual URL where it can be 5271 downloaded</p> 5272 <p>http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd</p> 5273 </li> 5274 <li>remapping from a given URL to another one, like an HTTP indirection 5275 saying that 5276 <p>"http://www.oasis-open.org/committes/tr.xsl"</p> 5277 <p>should really be looked at</p> 5278 <p>"http://www.oasis-open.org/committes/entity/stylesheets/base/tr.xsl"</p> 5279 </li> 5280 <li>providing a local cache mechanism allowing to load the entities 5281 associated to public identifiers or remote resources, this is a really 5282 important feature for any significant deployment of XML or SGML since it 5283 allows to avoid the aleas and delays associated to fetching remote 5284 resources.</li> 5285 </ul> 5286 5287 <h3><a name="definition">The definitions</a></h3> 5288 5289 <p>Libxml, as of 2.4.3 implements 2 kind of catalogs:</p> 5290 <ul> 5291 <li>the older SGML catalogs, the official spec is SGML Open Technical 5292 Resolution TR9401:1997, but is better understood by reading <a 5293 href="http://www.jclark.com/sp/catalog.htm">the SP Catalog page</a> from 5294 James Clark. This is relatively old and not the preferred mode of 5295 operation of libxml.</li> 5296 <li><a href="http://www.oasis-open.org/committees/entity/spec.html">XML 5297 Catalogs</a> is far more flexible, more recent, uses an XML syntax and 5298 should scale quite better. This is the default option of libxml.</li> 5299 </ul> 5300 5301 <p></p> 5302 5303 <h3><a name="Simple">Using catalog</a></h3> 5304 5305 <p>In a normal environment libxml2 will by default check the presence of a 5306 catalog in /etc/xml/catalog, and assuming it has been correctly populated, 5307 the processing is completely transparent to the document user. To take a 5308 concrete example, suppose you are authoring a DocBook document, this one 5309 starts with the following DOCTYPE definition:</p> 5310 <pre><?xml version='1.0'?> 5311 <!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN" 5312 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd"></pre> 5313 5314 <p>When validating the document with libxml, the catalog will be 5315 automatically consulted to lookup the public identifier "-//Norman Walsh//DTD 5316 DocBk XML V3.1.4//EN" and the system identifier 5317 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd", and if these entities have 5318 been installed on your system and the catalogs actually point to them, libxml 5319 will fetch them from the local disk.</p> 5320 5321 <p style="font-size: 10pt"><strong>Note</strong>: Really don't use this 5322 DOCTYPE example it's a really old version, but is fine as an example.</p> 5323 5324 <p>Libxml2 will check the catalog each time that it is requested to load an 5325 entity, this includes DTD, external parsed entities, stylesheets, etc ... If 5326 your system is correctly configured all the authoring phase and processing 5327 should use only local files, even if your document stays portable because it 5328 uses the canonical public and system ID, referencing the remote document.</p> 5329 5330 <h3><a name="Some">Some examples:</a></h3> 5331 5332 <p>Here is a couple of fragments from XML Catalogs used in libxml2 early 5333 regression tests in <code>test/catalogs</code> :</p> 5334 <pre><?xml version="1.0"?> 5335 <!DOCTYPE catalog PUBLIC 5336 "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5337 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5338 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5339 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5340 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5341 ...</pre> 5342 5343 <p>This is the beginning of a catalog for DocBook 4.1.2, XML Catalogs are 5344 written in XML, there is a specific namespace for catalog elements 5345 "urn:oasis:names:tc:entity:xmlns:xml:catalog". The first entry in this 5346 catalog is a <code>public</code> mapping it allows to associate a Public 5347 Identifier with an URI.</p> 5348 <pre>... 5349 <rewriteSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5350 rewritePrefix="file:///usr/share/xml/docbook/"/> 5351 ...</pre> 5352 5353 <p>A <code>rewriteSystem</code> is a very powerful instruction, it says that 5354 any URI starting with a given prefix should be looked at another URI 5355 constructed by replacing the prefix with an new one. In effect this acts like 5356 a cache system for a full area of the Web. In practice it is extremely useful 5357 with a file prefix if you have installed a copy of those resources on your 5358 local system.</p> 5359 <pre>... 5360 <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalog //" 5361 catalog="file:///usr/share/xml/docbook.xml"/> 5362 <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML" 5363 catalog="file:///usr/share/xml/docbook.xml"/> 5364 <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML" 5365 catalog="file:///usr/share/xml/docbook.xml"/> 5366 <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/" 5367 catalog="file:///usr/share/xml/docbook.xml"/> 5368 <delegateURI uriStartString="http://www.oasis-open.org/docbook/" 5369 catalog="file:///usr/share/xml/docbook.xml"/> 5370 ...</pre> 5371 5372 <p>Delegation is the core features which allows to build a tree of catalogs, 5373 easier to maintain than a single catalog, based on Public Identifier, System 5374 Identifier or URI prefixes it instructs the catalog software to look up 5375 entries in another resource. This feature allow to build hierarchies of 5376 catalogs, the set of entries presented should be sufficient to redirect the 5377 resolution of all DocBook references to the specific catalog in 5378 <code>/usr/share/xml/docbook.xml</code> this one in turn could delegate all 5379 references for DocBook 4.2.1 to a specific catalog installed at the same time 5380 as the DocBook resources on the local machine.</p> 5381 5382 <h3><a name="reference">How to tune catalog usage:</a></h3> 5383 5384 <p>The user can change the default catalog behaviour by redirecting queries 5385 to its own set of catalogs, this can be done by setting the 5386 <code>XML_CATALOG_FILES</code> environment variable to a list of catalogs, an 5387 empty one should deactivate loading the default <code>/etc/xml/catalog</code> 5388 default catalog</p> 5389 5390 <h3><a name="validate">How to debug catalog processing:</a></h3> 5391 5392 <p>Setting up the <code>XML_DEBUG_CATALOG</code> environment variable will 5393 make libxml2 output debugging information for each catalog operations, for 5394 example:</p> 5395 <pre>orchis:~/XML -> xmllint --memory --noout test/ent2 5396 warning: failed to load external entity "title.xml" 5397 orchis:~/XML -> export XML_DEBUG_CATALOG= 5398 orchis:~/XML -> xmllint --memory --noout test/ent2 5399 Failed to parse catalog /etc/xml/catalog 5400 Failed to parse catalog /etc/xml/catalog 5401 warning: failed to load external entity "title.xml" 5402 Catalogs cleanup 5403 orchis:~/XML -> </pre> 5404 5405 <p>The test/ent2 references an entity, running the parser from memory makes 5406 the base URI unavailable and the the "title.xml" entity cannot be loaded. 5407 Setting up the debug environment variable allows to detect that an attempt is 5408 made to load the <code>/etc/xml/catalog</code> but since it's not present the 5409 resolution fails.</p> 5410 5411 <p>But the most advanced way to debug XML catalog processing is to use the 5412 <strong>xmlcatalog</strong> command shipped with libxml2, it allows to load 5413 catalogs and make resolution queries to see what is going on. This is also 5414 used for the regression tests:</p> 5415 <pre>orchis:~/XML -> ./xmlcatalog test/catalogs/docbook.xml \ 5416 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5417 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5418 orchis:~/XML -> </pre> 5419 5420 <p>For debugging what is going on, adding one -v flags increase the verbosity 5421 level to indicate the processing done (adding a second flag also indicate 5422 what elements are recognized at parsing):</p> 5423 <pre>orchis:~/XML -> ./xmlcatalog -v test/catalogs/docbook.xml \ 5424 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5425 Parsing catalog test/catalogs/docbook.xml's content 5426 Found public match -//OASIS//DTD DocBook XML V4.1.2//EN 5427 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5428 Catalogs cleanup 5429 orchis:~/XML -> </pre> 5430 5431 <p>A shell interface is also available to debug and process multiple queries 5432 (and for regression tests):</p> 5433 <pre>orchis:~/XML -> ./xmlcatalog -shell test/catalogs/docbook.xml \ 5434 "-//OASIS//DTD DocBook XML V4.1.2//EN" 5435 > help 5436 Commands available: 5437 public PublicID: make a PUBLIC identifier lookup 5438 system SystemID: make a SYSTEM identifier lookup 5439 resolve PublicID SystemID: do a full resolver lookup 5440 add 'type' 'orig' 'replace' : add an entry 5441 del 'values' : remove values 5442 dump: print the current catalog state 5443 debug: increase the verbosity level 5444 quiet: decrease the verbosity level 5445 exit: quit the shell 5446 > public "-//OASIS//DTD DocBook XML V4.1.2//EN" 5447 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd 5448 > quit 5449 orchis:~/XML -> </pre> 5450 5451 <p>This should be sufficient for most debugging purpose, this was actually 5452 used heavily to debug the XML Catalog implementation itself.</p> 5453 5454 <h3><a name="Declaring">How to create and maintain</a> catalogs:</h3> 5455 5456 <p>Basically XML Catalogs are XML files, you can either use XML tools to 5457 manage them or use <strong>xmlcatalog</strong> for this. The basic step is 5458 to create a catalog the -create option provide this facility:</p> 5459 <pre>orchis:~/XML -> ./xmlcatalog --create tst.xml 5460 <?xml version="1.0"?> 5461 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5462 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5463 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5464 orchis:~/XML -> </pre> 5465 5466 <p>By default xmlcatalog does not overwrite the original catalog and save the 5467 result on the standard output, this can be overridden using the -noout 5468 option. The <code>-add</code> command allows to add entries in the 5469 catalog:</p> 5470 <pre>orchis:~/XML -> ./xmlcatalog --noout --create --add "public" \ 5471 "-//OASIS//DTD DocBook XML V4.1.2//EN" \ 5472 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd tst.xml 5473 orchis:~/XML -> cat tst.xml 5474 <?xml version="1.0"?> 5475 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" \ 5476 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5477 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> 5478 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN" 5479 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/> 5480 </catalog> 5481 orchis:~/XML -> </pre> 5482 5483 <p>The <code>-add</code> option will always take 3 parameters even if some of 5484 the XML Catalog constructs (like nextCatalog) will have only a single 5485 argument, just pass a third empty string, it will be ignored.</p> 5486 5487 <p>Similarly the <code>-del</code> option remove matching entries from the 5488 catalog:</p> 5489 <pre>orchis:~/XML -> ./xmlcatalog --del \ 5490 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" tst.xml 5491 <?xml version="1.0"?> 5492 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" 5493 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"> 5494 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/> 5495 orchis:~/XML -> </pre> 5496 5497 <p>The catalog is now empty. Note that the matching of <code>-del</code> is 5498 exact and would have worked in a similar fashion with the Public ID 5499 string.</p> 5500 5501 <p>This is rudimentary but should be sufficient to manage a not too complex 5502 catalog tree of resources.</p> 5503 5504 <h3><a name="implemento">The implementor corner quick review of the 5505 API:</a></h3> 5506 5507 <p>First, and like for every other module of libxml, there is an 5508 automatically generated <a href="html/libxml-catalog.html">API page for 5509 catalog support</a>.</p> 5510 5511 <p>The header for the catalog interfaces should be included as:</p> 5512 <pre>#include <libxml/catalog.h></pre> 5513 5514 <p>The API is voluntarily kept very simple. First it is not obvious that 5515 applications really need access to it since it is the default behaviour of 5516 libxml2 (Note: it is possible to completely override libxml2 default catalog 5517 by using <a href="html/libxml-parser.html">xmlSetExternalEntityLoader</a> to 5518 plug an application specific resolver).</p> 5519 5520 <p>Basically libxml2 support 2 catalog lists:</p> 5521 <ul> 5522 <li>the default one, global shared by all the application</li> 5523 <li>a per-document catalog, this one is built if the document uses the 5524 <code>oasis-xml-catalog</code> PIs to specify its own catalog list, it is 5525 associated to the parser context and destroyed when the parsing context 5526 is destroyed.</li> 5527 </ul> 5528 5529 <p>the document one will be used first if it exists.</p> 5530 5531 <h4>Initialization routines:</h4> 5532 5533 <p>xmlInitializeCatalog(), xmlLoadCatalog() and xmlLoadCatalogs() should be 5534 used at startup to initialize the catalog, if the catalog should be 5535 initialized with specific values xmlLoadCatalog() or xmlLoadCatalogs() 5536 should be called before xmlInitializeCatalog() which would otherwise do a 5537 default initialization first.</p> 5538 5539 <p>The xmlCatalogAddLocal() call is used by the parser to grow the document 5540 own catalog list if needed.</p> 5541 5542 <h4>Preferences setup:</h4> 5543 5544 <p>The XML Catalog spec requires the possibility to select default 5545 preferences between public and system delegation, 5546 xmlCatalogSetDefaultPrefer() allows this, xmlCatalogSetDefaults() and 5547 xmlCatalogGetDefaults() allow to control if XML Catalogs resolution should 5548 be forbidden, allowed for global catalog, for document catalog or both, the 5549 default is to allow both.</p> 5550 5551 <p>And of course xmlCatalogSetDebug() allows to generate debug messages 5552 (through the xmlGenericError() mechanism).</p> 5553 5554 <h4>Querying routines:</h4> 5555 5556 <p>xmlCatalogResolve(), xmlCatalogResolveSystem(), xmlCatalogResolvePublic() 5557 and xmlCatalogResolveURI() are relatively explicit if you read the XML 5558 Catalog specification they correspond to section 7 algorithms, they should 5559 also work if you have loaded an SGML catalog with a simplified semantic.</p> 5560 5561 <p>xmlCatalogLocalResolve() and xmlCatalogLocalResolveURI() are the same but 5562 operate on the document catalog list</p> 5563 5564 <h4>Cleanup and Miscellaneous:</h4> 5565 5566 <p>xmlCatalogCleanup() free-up the global catalog, xmlCatalogFreeLocal() is 5567 the per-document equivalent.</p> 5568 5569 <p>xmlCatalogAdd() and xmlCatalogRemove() are used to dynamically modify the 5570 first catalog in the global list, and xmlCatalogDump() allows to dump a 5571 catalog state, those routines are primarily designed for xmlcatalog, I'm not 5572 sure that exposing more complex interfaces (like navigation ones) would be 5573 really useful.</p> 5574 5575 <p>The xmlParseCatalogFile() is a function used to load XML Catalog files, 5576 it's similar as xmlParseFile() except it bypass all catalog lookups, it's 5577 provided because this functionality may be useful for client tools.</p> 5578 5579 <h4>threaded environments:</h4> 5580 5581 <p>Since the catalog tree is built progressively, some care has been taken to 5582 try to avoid troubles in multithreaded environments. The code is now thread 5583 safe assuming that the libxml2 library has been compiled with threads 5584 support.</p> 5585 5586 <p></p> 5587 5588 <h3><a name="Other">Other resources</a></h3> 5589 5590 <p>The XML Catalog specification is relatively recent so there isn't much 5591 literature to point at:</p> 5592 <ul> 5593 <li>You can find a good rant from Norm Walsh about <a 5594 href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the 5595 need for catalogs</a>, it provides a lot of context information even if 5596 I don't agree with everything presented. Norm also wrote a more recent 5597 article <a 5598 href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML 5599 entities and URI resolvers</a> describing them.</li> 5600 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML 5601 catalog proposal</a> from John Cowan</li> 5602 <li>The <a href="http://www.rddl.org/">Resource Directory Description 5603 Language</a> (RDDL) another catalog system but more oriented toward 5604 providing metadata for XML namespaces.</li> 5605 <li>the page from the OASIS Technical <a 5606 href="http://www.oasis-open.org/committees/entity/">Committee on Entity 5607 Resolution</a> who maintains XML Catalog, you will find pointers to the 5608 specification update, some background and pointers to others tools 5609 providing XML Catalog support</li> 5610 <li>There is a <a href="buildDocBookCatalog">shell script</a> to generate 5611 XML Catalogs for DocBook 4.1.2 . If it can write to the /etc/xml/ 5612 directory, it will set-up /etc/xml/catalog and /etc/xml/docbook based on 5613 the resources found on the system. Otherwise it will just create 5614 ~/xmlcatalog and ~/dbkxmlcatalog and doing: 5615 <p><code>export XML_CATALOG_FILES=$HOME/xmlcatalog</code></p> 5616 <p>should allow to process DocBook documentations without requiring 5617 network accesses for the DTD or stylesheets</p> 5618 </li> 5619 <li>I have uploaded <a href="ftp://xmlsoft.org/libxml2/test/dbk412catalog.tar.gz">a 5620 small tarball</a> containing XML Catalogs for DocBook 4.1.2 which seems 5621 to work fine for me too</li> 5622 <li>The <a href="http://www.xmlsoft.org/xmlcatalog_man.html">xmlcatalog 5623 manual page</a></li> 5624 </ul> 5625 5626 <p>If you have suggestions for corrections or additions, simply contact 5627 me:</p> 5628 5629 <h2><a name="library">The parser interfaces</a></h2> 5630 5631 <p>This section is directly intended to help programmers getting bootstrapped 5632 using the XML tollkit from the C language. It is not intended to be 5633 extensive. I hope the automatically generated documents will provide the 5634 completeness required, but as a separate set of documents. The interfaces of 5635 the XML parser are by principle low level, Those interested in a higher level 5636 API should <a href="#DOM">look at DOM</a>.</p> 5637 5638 <p>The <a href="html/libxml-parser.html">parser interfaces for XML</a> are 5639 separated from the <a href="html/libxml-htmlparser.html">HTML parser 5640 interfaces</a>. Let's have a look at how the XML parser can be called:</p> 5641 5642 <h3><a name="Invoking">Invoking the parser : the pull method</a></h3> 5643 5644 <p>Usually, the first thing to do is to read an XML input. The parser accepts 5645 documents either from in-memory strings or from files. The functions are 5646 defined in "parser.h":</p> 5647 <dl> 5648 <dt><code>xmlDocPtr xmlParseMemory(char *buffer, int size);</code></dt> 5649 <dd><p>Parse a null-terminated string containing the document.</p> 5650 </dd> 5651 </dl> 5652 <dl> 5653 <dt><code>xmlDocPtr xmlParseFile(const char *filename);</code></dt> 5654 <dd><p>Parse an XML document contained in a (possibly compressed) 5655 file.</p> 5656 </dd> 5657 </dl> 5658 5659 <p>The parser returns a pointer to the document structure (or NULL in case of 5660 failure).</p> 5661 5662 <h3 id="Invoking1">Invoking the parser: the push method</h3> 5663 5664 <p>In order for the application to keep the control when the document is 5665 being fetched (which is common for GUI based programs) libxml2 provides a 5666 push interface, too, as of version 1.8.3. Here are the interface 5667 functions:</p> 5668 <pre>xmlParserCtxtPtr xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax, 5669 void *user_data, 5670 const char *chunk, 5671 int size, 5672 const char *filename); 5673 int xmlParseChunk (xmlParserCtxtPtr ctxt, 5674 const char *chunk, 5675 int size, 5676 int terminate);</pre> 5677 5678 <p>and here is a simple example showing how to use the interface:</p> 5679 <pre> FILE *f; 5680 5681 f = fopen(filename, "r"); 5682 if (f != NULL) { 5683 int res, size = 1024; 5684 char chars[1024]; 5685 xmlParserCtxtPtr ctxt; 5686 5687 res = fread(chars, 1, 4, f); 5688 if (res > 0) { 5689 ctxt = xmlCreatePushParserCtxt(NULL, NULL, 5690 chars, res, filename); 5691 while ((res = fread(chars, 1, size, f)) > 0) { 5692 xmlParseChunk(ctxt, chars, res, 0); 5693 } 5694 xmlParseChunk(ctxt, chars, 0, 1); 5695 doc = ctxt->myDoc; 5696 xmlFreeParserCtxt(ctxt); 5697 } 5698 }</pre> 5699 5700 <p>The HTML parser embedded into libxml2 also has a push interface; the 5701 functions are just prefixed by "html" rather than "xml".</p> 5702 5703 <h3 id="Invoking2">Invoking the parser: the SAX interface</h3> 5704 5705 <p>The tree-building interface makes the parser memory-hungry, first loading 5706 the document in memory and then building the tree itself. Reading a document 5707 without building the tree is possible using the SAX interfaces (see SAX.h and 5708 <a href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">James 5709 Henstridge's documentation</a>). Note also that the push interface can be 5710 limited to SAX: just use the two first arguments of 5711 <code>xmlCreatePushParserCtxt()</code>.</p> 5712 5713 <h3><a name="Building">Building a tree from scratch</a></h3> 5714 5715 <p>The other way to get an XML tree in memory is by building it. Basically 5716 there is a set of functions dedicated to building new elements. (These are 5717 also described in <libxml/tree.h>.) For example, here is a piece of 5718 code that produces the XML document used in the previous examples:</p> 5719 <pre> #include <libxml/tree.h> 5720 xmlDocPtr doc; 5721 xmlNodePtr tree, subtree; 5722 5723 doc = xmlNewDoc("1.0"); 5724 doc->children = xmlNewDocNode(doc, NULL, "EXAMPLE", NULL); 5725 xmlSetProp(doc->children, "prop1", "gnome is great"); 5726 xmlSetProp(doc->children, "prop2", "& linux too"); 5727 tree = xmlNewChild(doc->children, NULL, "head", NULL); 5728 subtree = xmlNewChild(tree, NULL, "title", "Welcome to Gnome"); 5729 tree = xmlNewChild(doc->children, NULL, "chapter", NULL); 5730 subtree = xmlNewChild(tree, NULL, "title", "The Linux adventure"); 5731 subtree = xmlNewChild(tree, NULL, "p", "bla bla bla ..."); 5732 subtree = xmlNewChild(tree, NULL, "image", NULL); 5733 xmlSetProp(subtree, "href", "linus.gif");</pre> 5734 5735 <p>Not really rocket science ...</p> 5736 5737 <h3><a name="Traversing">Traversing the tree</a></h3> 5738 5739 <p>Basically by <a href="html/libxml-tree.html">including "tree.h"</a> your 5740 code has access to the internal structure of all the elements of the tree. 5741 The names should be somewhat simple like <strong>parent</strong>, 5742 <strong>children</strong>, <strong>next</strong>, <strong>prev</strong>, 5743 <strong>properties</strong>, etc... For example, still with the previous 5744 example:</p> 5745 <pre><code>doc->children->children->children</code></pre> 5746 5747 <p>points to the title element,</p> 5748 <pre>doc->children->children->next->children->children</pre> 5749 5750 <p>points to the text node containing the chapter title "The Linux 5751 adventure".</p> 5752 5753 <p><strong>NOTE</strong>: XML allows <em>PI</em>s and <em>comments</em> to be 5754 present before the document root, so <code>doc->children</code> may point 5755 to an element which is not the document Root Element; a function 5756 <code>xmlDocGetRootElement()</code> was added for this purpose.</p> 5757 5758 <h3><a name="Modifying">Modifying the tree</a></h3> 5759 5760 <p>Functions are provided for reading and writing the document content. Here 5761 is an excerpt from the <a href="html/libxml-tree.html">tree API</a>:</p> 5762 <dl> 5763 <dt><code>xmlAttrPtr xmlSetProp(xmlNodePtr node, const xmlChar *name, const 5764 xmlChar *value);</code></dt> 5765 <dd><p>This sets (or changes) an attribute carried by an ELEMENT node. 5766 The value can be NULL.</p> 5767 </dd> 5768 </dl> 5769 <dl> 5770 <dt><code>const xmlChar *xmlGetProp(xmlNodePtr node, const xmlChar 5771 *name);</code></dt> 5772 <dd><p>This function returns a pointer to new copy of the property 5773 content. Note that the user must deallocate the result.</p> 5774 </dd> 5775 </dl> 5776 5777 <p>Two functions are provided for reading and writing the text associated 5778 with elements:</p> 5779 <dl> 5780 <dt><code>xmlNodePtr xmlStringGetNodeList(xmlDocPtr doc, const xmlChar 5781 *value);</code></dt> 5782 <dd><p>This function takes an "external" string and converts it to one 5783 text node or possibly to a list of entity and text nodes. All 5784 non-predefined entity references like &Gnome; will be stored 5785 internally as entity nodes, hence the result of the function may not be 5786 a single node.</p> 5787 </dd> 5788 </dl> 5789 <dl> 5790 <dt><code>xmlChar *xmlNodeListGetString(xmlDocPtr doc, xmlNodePtr list, int 5791 inLine);</code></dt> 5792 <dd><p>This function is the inverse of 5793 <code>xmlStringGetNodeList()</code>. It generates a new string 5794 containing the content of the text and entity nodes. Note the extra 5795 argument inLine. If this argument is set to 1, the function will expand 5796 entity references. For example, instead of returning the &Gnome; 5797 XML encoding in the string, it will substitute it with its value (say, 5798 "GNU Network Object Model Environment").</p> 5799 </dd> 5800 </dl> 5801 5802 <h3><a name="Saving">Saving a tree</a></h3> 5803 5804 <p>Basically 3 options are possible:</p> 5805 <dl> 5806 <dt><code>void xmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int 5807 *size);</code></dt> 5808 <dd><p>Returns a buffer into which the document has been saved.</p> 5809 </dd> 5810 </dl> 5811 <dl> 5812 <dt><code>extern void xmlDocDump(FILE *f, xmlDocPtr doc);</code></dt> 5813 <dd><p>Dumps a document to an open file descriptor.</p> 5814 </dd> 5815 </dl> 5816 <dl> 5817 <dt><code>int xmlSaveFile(const char *filename, xmlDocPtr cur);</code></dt> 5818 <dd><p>Saves the document to a file. In this case, the compression 5819 interface is triggered if it has been turned on.</p> 5820 </dd> 5821 </dl> 5822 5823 <h3><a name="Compressio">Compression</a></h3> 5824 5825 <p>The library transparently handles compression when doing file-based 5826 accesses. The level of compression on saves can be turned on either globally 5827 or individually for one file:</p> 5828 <dl> 5829 <dt><code>int xmlGetDocCompressMode (xmlDocPtr doc);</code></dt> 5830 <dd><p>Gets the document compression ratio (0-9).</p> 5831 </dd> 5832 </dl> 5833 <dl> 5834 <dt><code>void xmlSetDocCompressMode (xmlDocPtr doc, int mode);</code></dt> 5835 <dd><p>Sets the document compression ratio.</p> 5836 </dd> 5837 </dl> 5838 <dl> 5839 <dt><code>int xmlGetCompressMode(void);</code></dt> 5840 <dd><p>Gets the default compression ratio.</p> 5841 </dd> 5842 </dl> 5843 <dl> 5844 <dt><code>void xmlSetCompressMode(int mode);</code></dt> 5845 <dd><p>Sets the default compression ratio.</p> 5846 </dd> 5847 </dl> 5848 5849 <h2><a name="Entities">Entities or no entities</a></h2> 5850 5851 <p>Entities in principle are similar to simple C macros. An entity defines an 5852 abbreviation for a given string that you can reuse many times throughout the 5853 content of your document. Entities are especially useful when a given string 5854 may occur frequently within a document, or to confine the change needed to a 5855 document to a restricted area in the internal subset of the document (at the 5856 beginning). Example:</p> 5857 <pre>1 <?xml version="1.0"?> 5858 2 <!DOCTYPE EXAMPLE SYSTEM "example.dtd" [ 5859 3 <!ENTITY xml "Extensible Markup Language"> 5860 4 ]> 5861 5 <EXAMPLE> 5862 6 &xml; 5863 7 </EXAMPLE></pre> 5864 5865 <p>Line 3 declares the xml entity. Line 6 uses the xml entity, by prefixing 5866 its name with '&' and following it by ';' without any spaces added. There 5867 are 5 predefined entities in libxml2 allowing you to escape characters with 5868 predefined meaning in some parts of the xml document content: 5869 <strong>&lt;</strong> for the character '<', <strong>&gt;</strong> 5870 for the character '>', <strong>&apos;</strong> for the character ''', 5871 <strong>&quot;</strong> for the character '"', and 5872 <strong>&amp;</strong> for the character '&'.</p> 5873 5874 <p>One of the problems related to entities is that you may want the parser to 5875 substitute an entity's content so that you can see the replacement text in 5876 your application. Or you may prefer to keep entity references as such in the 5877 content to be able to save the document back without losing this usually 5878 precious information (if the user went through the pain of explicitly 5879 defining entities, he may have a a rather negative attitude if you blindly 5880 substitute them as saving time). The <a 5881 href="html/libxml-parser.html#xmlSubstituteEntitiesDefault">xmlSubstituteEntitiesDefault()</a> 5882 function allows you to check and change the behaviour, which is to not 5883 substitute entities by default.</p> 5884 5885 <p>Here is the DOM tree built by libxml2 for the previous document in the 5886 default case:</p> 5887 <pre>/gnome/src/gnome-xml -> ./xmllint --debug test/ent1 5888 DOCUMENT 5889 version=1.0 5890 ELEMENT EXAMPLE 5891 TEXT 5892 content= 5893 ENTITY_REF 5894 INTERNAL_GENERAL_ENTITY xml 5895 content=Extensible Markup Language 5896 TEXT 5897 content=</pre> 5898 5899 <p>And here is the result when substituting entities:</p> 5900 <pre>/gnome/src/gnome-xml -> ./tester --debug --noent test/ent1 5901 DOCUMENT 5902 version=1.0 5903 ELEMENT EXAMPLE 5904 TEXT 5905 content= Extensible Markup Language</pre> 5906 5907 <p>So, entities or no entities? Basically, it depends on your use case. I 5908 suggest that you keep the non-substituting default behaviour and avoid using 5909 entities in your XML document or data if you are not willing to handle the 5910 entity references elements in the DOM tree.</p> 5911 5912 <p>Note that at save time libxml2 enforces the conversion of the predefined 5913 entities where necessary to prevent well-formedness problems, and will also 5914 transparently replace those with chars (i.e. it will not generate entity 5915 reference elements in the DOM tree or call the reference() SAX callback when 5916 finding them in the input).</p> 5917 5918 <p><span style="background-color: #FF0000">WARNING</span>: handling entities 5919 on top of the libxml2 SAX interface is difficult!!! If you plan to use 5920 non-predefined entities in your documents, then the learning curve to handle 5921 then using the SAX API may be long. If you plan to use complex documents, I 5922 strongly suggest you consider using the DOM interface instead and let libxml 5923 deal with the complexity rather than trying to do it yourself.</p> 5924 5925 <h2><a name="Namespaces">Namespaces</a></h2> 5926 5927 <p>The libxml2 library implements <a 5928 href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by 5929 recognizing namespace constructs in the input, and does namespace lookup 5930 automatically when building the DOM tree. A namespace declaration is 5931 associated with an in-memory structure and all elements or attributes within 5932 that namespace point to it. Hence testing the namespace is a simple and fast 5933 equality operation at the user level.</p> 5934 5935 <p>I suggest that people using libxml2 use a namespace, and declare it in the 5936 root element of their document as the default namespace. Then they don't need 5937 to use the prefix in the content but we will have a basis for future semantic 5938 refinement and merging of data from different sources. This doesn't increase 5939 the size of the XML output significantly, but significantly increases its 5940 value in the long-term. Example:</p> 5941 <pre><mydoc xmlns="http://mydoc.example.org/schemas/"> 5942 <elem1>...</elem1> 5943 <elem2>...</elem2> 5944 </mydoc></pre> 5945 5946 <p>The namespace value has to be an absolute URL, but the URL doesn't have to 5947 point to any existing resource on the Web. It will bind all the element and 5948 attributes with that URL. I suggest to use an URL within a domain you 5949 control, and that the URL should contain some kind of version information if 5950 possible. For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a 5951 good namespace scheme.</p> 5952 5953 <p>Then when you load a file, make sure that a namespace carrying the 5954 version-independent prefix is installed on the root element of your document, 5955 and if the version information don't match something you know, warn the user 5956 and be liberal in what you accept as the input. Also do *not* try to base 5957 namespace checking on the prefix value. <foo:text> may be exactly the 5958 same as <bar:text> in another document. What really matters is the URI 5959 associated with the element or the attribute, not the prefix string (which is 5960 just a shortcut for the full URI). In libxml, element and attributes have an 5961 <code>ns</code> field pointing to an xmlNs structure detailing the namespace 5962 prefix and its URI.</p> 5963 5964 <p>@@Interfaces@@</p> 5965 <pre>xmlNodePtr node; 5966 if(!strncmp(node->name,"mytag",5) 5967 && node->ns 5968 && !strcmp(node->ns->href,"http://www.mysite.com/myns/1.0")) { 5969 ... 5970 }</pre> 5971 5972 <p>Usually people object to using namespaces together with validity checking. 5973 I will try to make sure that using namespaces won't break validity checking, 5974 so even if you plan to use or currently are using validation I strongly 5975 suggest adding namespaces to your document. A default namespace scheme 5976 <code>xmlns="http://...."</code> should not break validity even on less 5977 flexible parsers. Using namespaces to mix and differentiate content coming 5978 from multiple DTDs will certainly break current validation schemes. To check 5979 such documents one needs to use schema-validation, which is supported in 5980 libxml2 as well. See <a href="http://www.relaxng.org/">relagx-ng</a> and <a 5981 href="http://www.w3c.org/XML/Schema">w3c-schema</a>.</p> 5982 5983 <h2><a name="Upgrading">Upgrading 1.x code</a></h2> 5984 5985 <p>Incompatible changes:</p> 5986 5987 <p>Version 2 of libxml2 is the first version introducing serious backward 5988 incompatible changes. The main goals were:</p> 5989 <ul> 5990 <li>a general cleanup. A number of mistakes inherited from the very early 5991 versions couldn't be changed due to compatibility constraints. Example 5992 the "childs" element in the nodes.</li> 5993 <li>Uniformization of the various nodes, at least for their header and link 5994 parts (doc, parent, children, prev, next), the goal is a simpler 5995 programming model and simplifying the task of the DOM implementors.</li> 5996 <li>better conformances to the XML specification, for example version 1.x 5997 had an heuristic to try to detect ignorable white spaces. As a result the 5998 SAX event generated were ignorableWhitespace() while the spec requires 5999 character() in that case. This also mean that a number of DOM node 6000 containing blank text may populate the DOM tree which were not present 6001 before.</li> 6002 </ul> 6003 6004 <h3>How to fix libxml-1.x code:</h3> 6005 6006 <p>So client code of libxml designed to run with version 1.x may have to be 6007 changed to compile against version 2.x of libxml. Here is a list of changes 6008 that I have collected, they may not be sufficient, so in case you find other 6009 change which are required, <a href="mailto:Daniel.Veillard@w3.org">drop me a 6010 mail</a>:</p> 6011 <ol> 6012 <li>The package name have changed from libxml to libxml2, the library name 6013 is now -lxml2 . There is a new xml2-config script which should be used to 6014 select the right parameters libxml2</li> 6015 <li>Node <strong>childs</strong> field has been renamed 6016 <strong>children</strong> so s/childs/children/g should be applied 6017 (probability of having "childs" anywhere else is close to 0+</li> 6018 <li>The document don't have anymore a <strong>root</strong> element it has 6019 been replaced by <strong>children</strong> and usually you will get a 6020 list of element here. For example a Dtd element for the internal subset 6021 and it's declaration may be found in that list, as well as processing 6022 instructions or comments found before or after the document root element. 6023 Use <strong>xmlDocGetRootElement(doc)</strong> to get the root element of 6024 a document. Alternatively if you are sure to not reference DTDs nor have 6025 PIs or comments before or after the root element 6026 s/->root/->children/g will probably do it.</li> 6027 <li>The white space issue, this one is more complex, unless special case of 6028 validating parsing, the line breaks and spaces usually used for indenting 6029 and formatting the document content becomes significant. So they are 6030 reported by SAX and if your using the DOM tree, corresponding nodes are 6031 generated. Too approach can be taken: 6032 <ol> 6033 <li>lazy one, use the compatibility call 6034 <strong>xmlKeepBlanksDefault(0)</strong> but be aware that you are 6035 relying on a special (and possibly broken) set of heuristics of 6036 libxml to detect ignorable blanks. Don't complain if it breaks or 6037 make your application not 100% clean w.r.t. to it's input.</li> 6038 <li>the Right Way: change you code to accept possibly insignificant 6039 blanks characters, or have your tree populated with weird blank text 6040 nodes. You can spot them using the commodity function 6041 <strong>xmlIsBlankNode(node)</strong> returning 1 for such blank 6042 nodes.</li> 6043 </ol> 6044 <p>Note also that with the new default the output functions don't add any 6045 extra indentation when saving a tree in order to be able to round trip 6046 (read and save) without inflating the document with extra formatting 6047 chars.</p> 6048 </li> 6049 <li>The include path has changed to $prefix/libxml/ and the includes 6050 themselves uses this new prefix in includes instructions... If you are 6051 using (as expected) the 6052 <pre>xml2-config --cflags</pre> 6053 <p>output to generate you compile commands this will probably work out of 6054 the box</p> 6055 </li> 6056 <li>xmlDetectCharEncoding takes an extra argument indicating the length in 6057 byte of the head of the document available for character detection.</li> 6058 </ol> 6059 6060 <h3>Ensuring both libxml-1.x and libxml-2.x compatibility</h3> 6061 6062 <p>Two new version of libxml (1.8.11) and libxml2 (2.3.4) have been released 6063 to allow smooth upgrade of existing libxml v1code while retaining 6064 compatibility. They offers the following:</p> 6065 <ol> 6066 <li>similar include naming, one should use 6067 <strong>#include<libxml/...></strong> in both cases.</li> 6068 <li>similar identifiers defined via macros for the child and root fields: 6069 respectively <strong>xmlChildrenNode</strong> and 6070 <strong>xmlRootNode</strong></li> 6071 <li>a new macro <strong>LIBXML_TEST_VERSION</strong> which should be 6072 inserted once in the client code</li> 6073 </ol> 6074 6075 <p>So the roadmap to upgrade your existing libxml applications is the 6076 following:</p> 6077 <ol> 6078 <li>install the libxml-1.8.8 (and libxml-devel-1.8.8) packages</li> 6079 <li>find all occurrences where the xmlDoc <strong>root</strong> field is 6080 used and change it to <strong>xmlRootNode</strong></li> 6081 <li>similarly find all occurrences where the xmlNode 6082 <strong>childs</strong> field is used and change it to 6083 <strong>xmlChildrenNode</strong></li> 6084 <li>add a <strong>LIBXML_TEST_VERSION</strong> macro somewhere in your 6085 <strong>main()</strong> or in the library init entry point</li> 6086 <li>Recompile, check compatibility, it should still work</li> 6087 <li>Change your configure script to look first for xml2-config and fall 6088 back using xml-config . Use the --cflags and --libs output of the command 6089 as the Include and Linking parameters needed to use libxml.</li> 6090 <li>install libxml2-2.3.x and libxml2-devel-2.3.x (libxml-1.8.y and 6091 libxml-devel-1.8.y can be kept simultaneously)</li> 6092 <li>remove your config.cache, relaunch your configuration mechanism, and 6093 recompile, if steps 2 and 3 were done right it should compile as-is</li> 6094 <li>Test that your application is still running correctly, if not this may 6095 be due to extra empty nodes due to formating spaces being kept in libxml2 6096 contrary to libxml1, in that case insert xmlKeepBlanksDefault(1) in your 6097 code before calling the parser (next to 6098 <strong>LIBXML_TEST_VERSION</strong> is a fine place).</li> 6099 </ol> 6100 6101 <p>Following those steps should work. It worked for some of my own code.</p> 6102 6103 <p>Let me put some emphasis on the fact that there is far more changes from 6104 libxml 1.x to 2.x than the ones you may have to patch for. The overall code 6105 has been considerably cleaned up and the conformance to the XML specification 6106 has been drastically improved too. Don't take those changes as an excuse to 6107 not upgrade, it may cost a lot on the long term ...</p> 6108 6109 <h2><a name="Thread">Thread safety</a></h2> 6110 6111 <p>Starting with 2.4.7, libxml2 makes provisions to ensure that concurrent 6112 threads can safely work in parallel parsing different documents. There is 6113 however a couple of things to do to ensure it:</p> 6114 <ul> 6115 <li>configure the library accordingly using the --with-threads options</li> 6116 <li>call xmlInitParser() in the "main" thread before using any of the 6117 libxml2 API (except possibly selecting a different memory allocator)</li> 6118 </ul> 6119 6120 <p>Note that the thread safety cannot be ensured for multiple threads sharing 6121 the same document, the locking must be done at the application level, libxml 6122 exports a basic mutex and reentrant mutexes API in <libxml/threads.h>. 6123 The parts of the library checked for thread safety are:</p> 6124 <ul> 6125 <li>concurrent loading</li> 6126 <li>file access resolution</li> 6127 <li>catalog access</li> 6128 <li>catalog building</li> 6129 <li>entities lookup/accesses</li> 6130 <li>validation</li> 6131 <li>global variables per-thread override</li> 6132 <li>memory handling</li> 6133 </ul> 6134 6135 <p>XPath has been tested for threaded usage on non-modified document 6136 for example when using libxslt, but make 100% sure the documents 6137 are accessed read-only !</p> 6138 6139 <h2><a name="DOM"></a><a name="Principles">DOM Principles</a></h2> 6140 6141 <p><a href="http://www.w3.org/DOM/">DOM</a> stands for the <em>Document 6142 Object Model</em>; this is an API for accessing XML or HTML structured 6143 documents. Native support for DOM in Gnome is on the way (module gnome-dom), 6144 and will be based on gnome-xml. This will be a far cleaner interface to 6145 manipulate XML files within Gnome since it won't expose the internal 6146 structure.</p> 6147 6148 <p>The current DOM implementation on top of libxml2 is the <a 6149 href="http://svn.gnome.org/viewvc/gdome2/trunk/">gdome2 Gnome module</a>, this 6150 is a full DOM interface, thanks to Paolo Casarini, check the <a 6151 href="http://gdome2.cs.unibo.it/">Gdome2 homepage</a> for more 6152 information.</p> 6153 6154 <h2><a name="Example"></a><a name="real">A real example</a></h2> 6155 6156 <p>Here is a real size example, where the actual content of the application 6157 data is not kept in the DOM tree but uses internal structures. It is based on 6158 a proposal to keep a database of jobs related to Gnome, with an XML based 6159 storage structure. Here is an <a href="gjobs.xml">XML encoded jobs 6160 base</a>:</p> 6161 <pre><?xml version="1.0"?> 6162 <gjob:Helping xmlns:gjob="http://www.gnome.org/some-location"> 6163 <gjob:Jobs> 6164 6165 <gjob:Job> 6166 <gjob:Project ID="3"/> 6167 <gjob:Application>GBackup</gjob:Application> 6168 <gjob:Category>Development</gjob:Category> 6169 6170 <gjob:Update> 6171 <gjob:Status>Open</gjob:Status> 6172 <gjob:Modified>Mon, 07 Jun 1999 20:27:45 -0400 MET DST</gjob:Modified> 6173 <gjob:Salary>USD 0.00</gjob:Salary> 6174 </gjob:Update> 6175 6176 <gjob:Developers> 6177 <gjob:Developer> 6178 </gjob:Developer> 6179 </gjob:Developers> 6180 6181 <gjob:Contact> 6182 <gjob:Person>Nathan Clemons</gjob:Person> 6183 <gjob:Email>nathan@windsofstorm.net</gjob:Email> 6184 <gjob:Company> 6185 </gjob:Company> 6186 <gjob:Organisation> 6187 </gjob:Organisation> 6188 <gjob:Webpage> 6189 </gjob:Webpage> 6190 <gjob:Snailmail> 6191 </gjob:Snailmail> 6192 <gjob:Phone> 6193 </gjob:Phone> 6194 </gjob:Contact> 6195 6196 <gjob:Requirements> 6197 The program should be released as free software, under the GPL. 6198 </gjob:Requirements> 6199 6200 <gjob:Skills> 6201 </gjob:Skills> 6202 6203 <gjob:Details> 6204 A GNOME based system that will allow a superuser to configure 6205 compressed and uncompressed files and/or file systems to be backed 6206 up with a supported media in the system. This should be able to 6207 perform via find commands generating a list of files that are passed 6208 to tar, dd, cpio, cp, gzip, etc., to be directed to the tape machine 6209 or via operations performed on the filesystem itself. Email 6210 notification and GUI status display very important. 6211 </gjob:Details> 6212 6213 </gjob:Job> 6214 6215 </gjob:Jobs> 6216 </gjob:Helping></pre> 6217 6218 <p>While loading the XML file into an internal DOM tree is a matter of 6219 calling only a couple of functions, browsing the tree to gather the data and 6220 generate the internal structures is harder, and more error prone.</p> 6221 6222 <p>The suggested principle is to be tolerant with respect to the input 6223 structure. For example, the ordering of the attributes is not significant, 6224 the XML specification is clear about it. It's also usually a good idea not to 6225 depend on the order of the children of a given node, unless it really makes 6226 things harder. Here is some code to parse the information for a person:</p> 6227 <pre>/* 6228 * A person record 6229 */ 6230 typedef struct person { 6231 char *name; 6232 char *email; 6233 char *company; 6234 char *organisation; 6235 char *smail; 6236 char *webPage; 6237 char *phone; 6238 } person, *personPtr; 6239 6240 /* 6241 * And the code needed to parse it 6242 */ 6243 personPtr parsePerson(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6244 personPtr ret = NULL; 6245 6246 DEBUG("parsePerson\n"); 6247 /* 6248 * allocate the struct 6249 */ 6250 ret = (personPtr) malloc(sizeof(person)); 6251 if (ret == NULL) { 6252 fprintf(stderr,"out of memory\n"); 6253 return(NULL); 6254 } 6255 memset(ret, 0, sizeof(person)); 6256 6257 /* We don't care what the top level element name is */ 6258 cur = cur->xmlChildrenNode; 6259 while (cur != NULL) { 6260 if ((!strcmp(cur->name, "Person")) && (cur->ns == ns)) 6261 ret->name = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6262 if ((!strcmp(cur->name, "Email")) && (cur->ns == ns)) 6263 ret->email = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6264 cur = cur->next; 6265 } 6266 6267 return(ret); 6268 }</pre> 6269 6270 <p>Here are a couple of things to notice:</p> 6271 <ul> 6272 <li>Usually a recursive parsing style is the more convenient one: XML data 6273 is by nature subject to repetitive constructs and usually exhibits highly 6274 structured patterns.</li> 6275 <li>The two arguments of type <em>xmlDocPtr</em> and <em>xmlNsPtr</em>, 6276 i.e. the pointer to the global XML document and the namespace reserved to 6277 the application. Document wide information are needed for example to 6278 decode entities and it's a good coding practice to define a namespace for 6279 your application set of data and test that the element and attributes 6280 you're analyzing actually pertains to your application space. This is 6281 done by a simple equality test (cur->ns == ns).</li> 6282 <li>To retrieve text and attributes value, you can use the function 6283 <em>xmlNodeListGetString</em> to gather all the text and entity reference 6284 nodes generated by the DOM output and produce an single text string.</li> 6285 </ul> 6286 6287 <p>Here is another piece of code used to parse another level of the 6288 structure:</p> 6289 <pre>#include <libxml/tree.h> 6290 /* 6291 * a Description for a Job 6292 */ 6293 typedef struct job { 6294 char *projectID; 6295 char *application; 6296 char *category; 6297 personPtr contact; 6298 int nbDevelopers; 6299 personPtr developers[100]; /* using dynamic alloc is left as an exercise */ 6300 } job, *jobPtr; 6301 6302 /* 6303 * And the code needed to parse it 6304 */ 6305 jobPtr parseJob(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) { 6306 jobPtr ret = NULL; 6307 6308 DEBUG("parseJob\n"); 6309 /* 6310 * allocate the struct 6311 */ 6312 ret = (jobPtr) malloc(sizeof(job)); 6313 if (ret == NULL) { 6314 fprintf(stderr,"out of memory\n"); 6315 return(NULL); 6316 } 6317 memset(ret, 0, sizeof(job)); 6318 6319 /* We don't care what the top level element name is */ 6320 cur = cur->xmlChildrenNode; 6321 while (cur != NULL) { 6322 6323 if ((!strcmp(cur->name, "Project")) && (cur->ns == ns)) { 6324 ret->projectID = xmlGetProp(cur, "ID"); 6325 if (ret->projectID == NULL) { 6326 fprintf(stderr, "Project has no ID\n"); 6327 } 6328 } 6329 if ((!strcmp(cur->name, "Application")) && (cur->ns == ns)) 6330 ret->application = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6331 if ((!strcmp(cur->name, "Category")) && (cur->ns == ns)) 6332 ret->category = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1); 6333 if ((!strcmp(cur->name, "Contact")) && (cur->ns == ns)) 6334 ret->contact = parsePerson(doc, ns, cur); 6335 cur = cur->next; 6336 } 6337 6338 return(ret); 6339 }</pre> 6340 6341 <p>Once you are used to it, writing this kind of code is quite simple, but 6342 boring. Ultimately, it could be possible to write stubbers taking either C 6343 data structure definitions, a set of XML examples or an XML DTD and produce 6344 the code needed to import and export the content between C data and XML 6345 storage. This is left as an exercise to the reader :-)</p> 6346 6347 <p>Feel free to use <a href="example/gjobread.c">the code for the full C 6348 parsing example</a> as a template, it is also available with Makefile in the 6349 Gnome SVN base under libxml2/example</p> 6350 6351 <h2><a name="Contributi">Contributions</a></h2> 6352 <ul> 6353 <li>Bjorn Reese, William Brack and Thomas Broyer have provided a number of 6354 patches, Gary Pennington worked on the validation API, threading support 6355 and Solaris port.</li> 6356 <li>John Fleck helps maintaining the documentation and man pages.</li> 6357 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the 6358 maintainer of the Windows port, <a 6359 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides 6360 binaries</a></li> 6361 <li><a href="mailto:Gary.Pennington@sun.com">Gary Pennington</a> provides 6362 <a href="http://garypennington.net/libxml2/">Solaris binaries</a></li> 6363 <li><a 6364 href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">Matt 6365 Sergeant</a> developed <a 6366 href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper for 6367 libxml2/libxslt as part of the <a href="http://axkit.com/">AxKit XML 6368 application server</a></li> 6369 <li><a href="mailto:fnatter@gmx.net">Felix Natter</a> and <a 6370 href="mailto:geertk@ai.rug.nl">Geert Kloosterman</a> provide <a 6371 href="libxml-doc.el">an emacs module</a> to lookup libxml(2) functions 6372 documentation</li> 6373 <li><a href="mailto:sherwin@nlm.nih.gov">Ziying Sherwin</a> provided <a 6374 href="http://xmlsoft.org/messages/0488.html">man pages</a></li> 6375 <li>there is a module for <a 6376 href="http://acs-misc.sourceforge.net/nsxml.html">libxml/libxslt support 6377 in OpenNSD/AOLServer</a></li> 6378 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provided the 6379 first version of libxml/libxslt <a 6380 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a></li> 6381 <li>Petr Kozelka provides <a 6382 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue 6383 libxml2</a> with Kylix and Delphi and other Pascal compilers</li> 6384 <li><a href="mailto:aleksey@aleksey.com">Aleksey Sanin</a> implemented the 6385 <a href="http://www.w3.org/Signature/">XML Canonicalization and XML 6386 Digital Signature</a> <a 6387 href="http://www.aleksey.com/xmlsec/">implementations for libxml2</a></li> 6388 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> and 6389 contributors maintain <a href="http://tclxml.sourceforge.net/">tcl 6390 bindings for libxml2 and libxslt</a>, as well as <a 6391 href="http://tclxml.sf.net/tkxmllint.html">tkxmllint</a> a GUI for 6392 xmllint and <a href="http://tclxml.sf.net/tkxsltproc.html">tkxsltproc</a> 6393 a GUI for xsltproc.</li> 6394 </ul> 6395 6396 <p></p> 6397 </body> 6398 </html> 6399
