1 /* Copyright (C) 1995-1999, 2000-2003 Free Software Foundation, Inc.
2 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
3
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Library General Public License as published
6 by the Free Software Foundation; either version 2, or (at your option)
7 any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
17 USA. */
18
19 /* Tell glibc's <string.h> to provide a prototype for stpcpy().
20 This must come before <config.h> because <config.h> may include
21 <features.h>, and once <features.h> has been included, it's too late. */
22 #ifndef _GNU_SOURCE
23 # define _GNU_SOURCE 1
24 #endif
25
26 #ifdef HAVE_CONFIG_H
27 # include <config.h>
28 #endif
29
30 #include <string.h>
31
32 #if defined _LIBC || defined HAVE_ARGZ_H
33 # include <argz.h>
34 #endif
35 #include <ctype.h>
36 #include <sys/types.h>
37 #include <stdlib.h>
38
39 #include "loadinfo.h"
40
41 /* On some strange systems still no definition of NULL is found. Sigh! */
42 #ifndef NULL
43 # if defined __STDC__ && __STDC__
44 # define NULL ((void *) 0)
45 # else
46 # define NULL 0
47 # endif
48 #endif
49
50 /* @@ end of prolog @@ */
51
52 #ifdef _LIBC
53 /* Rename the non ANSI C functions. This is required by the standard
54 because some ANSI C functions will require linking with this object
55 file and the name space must not be polluted. */
56 # ifndef stpcpy
57 # define stpcpy(dest, src) __stpcpy(dest, src)
58 # endif
59 #else
60 # ifndef HAVE_STPCPY
61 #define stpcpy(dest, src) my_stpcpy(dest, src)
62 static char *stpcpy (char *dest, const char *src);
63 # endif
64 #endif
65
66 /* Pathname support.
67 ISSLASH(C) tests whether C is a directory separator character.
68 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
69 it may be concatenated to a directory pathname.
70 */
71 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__
72 /* Win32, OS/2, DOS */
73 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
74 # define HAS_DEVICE(P) \
75 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
76 && (P)[1] == ':')
77 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
78 #else
79 /* Unix */
80 # define ISSLASH(C) ((C) == '/')
81 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
82 #endif
83
84 /* Define function which are usually not available. */
85
86 #if !defined _LIBC && !defined HAVE___ARGZ_COUNT
87 /* Returns the number of strings in ARGZ. */
88 static size_t
argz_count__(const char * argz,size_t len)89 argz_count__ (const char *argz, size_t len)
90 {
91 size_t count = 0;
92 while (len > 0)
93 {
94 size_t part_len = strlen (argz);
95 argz += part_len + 1;
96 len -= part_len + 1;
97 count++;
98 }
99 return count;
100 }
101 # undef __argz_count
102 # define __argz_count(argz, len) argz_count__ (argz, len)
103 #else
104 # ifdef _LIBC
105 # define __argz_count(argz, len) INTUSE(__argz_count) (argz, len)
106 # endif
107 #endif /* !_LIBC && !HAVE___ARGZ_COUNT */
108
109 #if !defined _LIBC && !defined HAVE___ARGZ_STRINGIFY
110 /* Make '\0' separated arg vector ARGZ printable by converting all the '\0's
111 except the last into the character SEP. */
112 static void
argz_stringify__(char * argz,size_t len,int sep)113 argz_stringify__ (char *argz, size_t len, int sep)
114 {
115 while (len > 0)
116 {
117 size_t part_len = strlen (argz);
118 argz += part_len;
119 len -= part_len + 1;
120 if (len > 0)
121 *argz++ = sep;
122 }
123 }
124 # undef __argz_stringify
125 # define __argz_stringify(argz, len, sep) argz_stringify__ (argz, len, sep)
126 #else
127 # ifdef _LIBC
128 # define __argz_stringify(argz, len, sep) \
129 INTUSE(__argz_stringify) (argz, len, sep)
130 # endif
131 #endif /* !_LIBC && !HAVE___ARGZ_STRINGIFY */
132
133 #if !defined _LIBC && !defined HAVE___ARGZ_NEXT
134 static char *
argz_next__(char * argz,size_t argz_len,const char * entry)135 argz_next__ (char *argz, size_t argz_len, const char *entry)
136 {
137 if (entry)
138 {
139 if (entry < argz + argz_len)
140 entry = strchr (entry, '\0') + 1;
141
142 return entry >= argz + argz_len ? NULL : (char *) entry;
143 }
144 else
145 if (argz_len > 0)
146 return argz;
147 else
148 return 0;
149 }
150 # undef __argz_next
151 # define __argz_next(argz, len, entry) argz_next__ (argz, len, entry)
152 #endif /* !_LIBC && !HAVE___ARGZ_NEXT */
153
154
155 /* Return number of bits set in X. */
156 static inline int
pop(int x)157 pop (int x)
158 {
159 /* We assume that no more than 16 bits are used. */
160 x = ((x & ~0x5555) >> 1) + (x & 0x5555);
161 x = ((x & ~0x3333) >> 2) + (x & 0x3333);
162 x = ((x >> 4) + x) & 0x0f0f;
163 x = ((x >> 8) + x) & 0xff;
164
165 return x;
166 }
167
168
169 struct loaded_l10nfile *
_nl_make_l10nflist(struct loaded_l10nfile ** l10nfile_list,const char * dirlist,size_t dirlist_len,int mask,const char * language,const char * territory,const char * codeset,const char * normalized_codeset,const char * modifier,const char * special,const char * sponsor,const char * revision,const char * filename,int do_allocate)170 _nl_make_l10nflist (struct loaded_l10nfile **l10nfile_list,
171 const char *dirlist, size_t dirlist_len,
172 int mask, const char *language, const char *territory,
173 const char *codeset, const char *normalized_codeset,
174 const char *modifier, const char *special,
175 const char *sponsor, const char *revision,
176 const char *filename, int do_allocate)
177 {
178 char *abs_filename;
179 struct loaded_l10nfile **lastp;
180 struct loaded_l10nfile *retval;
181 char *cp;
182 size_t dirlist_count;
183 size_t entries;
184 int cnt;
185
186 /* If LANGUAGE contains an absolute directory specification, we ignore
187 DIRLIST. */
188 if (IS_ABSOLUTE_PATH (language))
189 dirlist_len = 0;
190
191 /* Allocate room for the full file name. */
192 abs_filename = (char *) malloc (dirlist_len
193 + strlen (language)
194 + ((mask & TERRITORY) != 0
195 ? strlen (territory) + 1 : 0)
196 + ((mask & XPG_CODESET) != 0
197 ? strlen (codeset) + 1 : 0)
198 + ((mask & XPG_NORM_CODESET) != 0
199 ? strlen (normalized_codeset) + 1 : 0)
200 + (((mask & XPG_MODIFIER) != 0
201 || (mask & CEN_AUDIENCE) != 0)
202 ? strlen (modifier) + 1 : 0)
203 + ((mask & CEN_SPECIAL) != 0
204 ? strlen (special) + 1 : 0)
205 + (((mask & CEN_SPONSOR) != 0
206 || (mask & CEN_REVISION) != 0)
207 ? (1 + ((mask & CEN_SPONSOR) != 0
208 ? strlen (sponsor) : 0)
209 + ((mask & CEN_REVISION) != 0
210 ? strlen (revision) + 1 : 0)) : 0)
211 + 1 + strlen (filename) + 1);
212
213 if (abs_filename == NULL)
214 return NULL;
215
216 /* Construct file name. */
217 cp = abs_filename;
218 if (dirlist_len > 0)
219 {
220 memcpy (cp, dirlist, dirlist_len);
221 __argz_stringify (cp, dirlist_len, PATH_SEPARATOR);
222 cp += dirlist_len;
223 cp[-1] = '/';
224 }
225
226 cp = stpcpy (cp, language);
227
228 if ((mask & TERRITORY) != 0)
229 {
230 *cp++ = '_';
231 cp = stpcpy (cp, territory);
232 }
233 if ((mask & XPG_CODESET) != 0)
234 {
235 *cp++ = '.';
236 cp = stpcpy (cp, codeset);
237 }
238 if ((mask & XPG_NORM_CODESET) != 0)
239 {
240 *cp++ = '.';
241 cp = stpcpy (cp, normalized_codeset);
242 }
243 if ((mask & (XPG_MODIFIER | CEN_AUDIENCE)) != 0)
244 {
245 /* This component can be part of both syntaces but has different
246 leading characters. For CEN we use `+', else `@'. */
247 *cp++ = (mask & CEN_AUDIENCE) != 0 ? '+' : '@';
248 cp = stpcpy (cp, modifier);
249 }
250 if ((mask & CEN_SPECIAL) != 0)
251 {
252 *cp++ = '+';
253 cp = stpcpy (cp, special);
254 }
255 if ((mask & (CEN_SPONSOR | CEN_REVISION)) != 0)
256 {
257 *cp++ = ',';
258 if ((mask & CEN_SPONSOR) != 0)
259 cp = stpcpy (cp, sponsor);
260 if ((mask & CEN_REVISION) != 0)
261 {
262 *cp++ = '_';
263 cp = stpcpy (cp, revision);
264 }
265 }
266
267 *cp++ = '/';
268 stpcpy (cp, filename);
269
270 /* Look in list of already loaded domains whether it is already
271 available. */
272 lastp = l10nfile_list;
273 for (retval = *l10nfile_list; retval != NULL; retval = retval->next)
274 if (retval->filename != NULL)
275 {
276 int compare = strcmp (retval->filename, abs_filename);
277 if (compare == 0)
278 /* We found it! */
279 break;
280 if (compare < 0)
281 {
282 /* It's not in the list. */
283 retval = NULL;
284 break;
285 }
286
287 lastp = &retval->next;
288 }
289
290 if (retval != NULL || do_allocate == 0)
291 {
292 free (abs_filename);
293 return retval;
294 }
295
296 dirlist_count = (dirlist_len > 0 ? __argz_count (dirlist, dirlist_len) : 1);
297
298 /* Allocate a new loaded_l10nfile. */
299 retval =
300 (struct loaded_l10nfile *)
301 malloc (sizeof (*retval)
302 + (((dirlist_count << pop (mask)) + (dirlist_count > 1 ? 1 : 0))
303 * sizeof (struct loaded_l10nfile *)));
304 if (retval == NULL)
305 return NULL;
306
307 retval->filename = abs_filename;
308
309 /* We set retval->data to NULL here; it is filled in later.
310 Setting retval->decided to 1 here means that retval does not
311 correspond to a real file (dirlist_count > 1) or is not worth
312 looking up (if an unnormalized codeset was specified). */
313 retval->decided = (dirlist_count > 1
314 || ((mask & XPG_CODESET) != 0
315 && (mask & XPG_NORM_CODESET) != 0));
316 retval->data = NULL;
317
318 retval->next = *lastp;
319 *lastp = retval;
320
321 entries = 0;
322 /* Recurse to fill the inheritance list of RETVAL.
323 If the DIRLIST is a real list (i.e. DIRLIST_COUNT > 1), the RETVAL
324 entry does not correspond to a real file; retval->filename contains
325 colons. In this case we loop across all elements of DIRLIST and
326 across all bit patterns dominated by MASK.
327 If the DIRLIST is a single directory or entirely redundant (i.e.
328 DIRLIST_COUNT == 1), we loop across all bit patterns dominated by
329 MASK, excluding MASK itself.
330 In either case, we loop down from MASK to 0. This has the effect
331 that the extra bits in the locale name are dropped in this order:
332 first the modifier, then the territory, then the codeset, then the
333 normalized_codeset. */
334 for (cnt = dirlist_count > 1 ? mask : mask - 1; cnt >= 0; --cnt)
335 if ((cnt & ~mask) == 0
336 && ((cnt & CEN_SPECIFIC) == 0 || (cnt & XPG_SPECIFIC) == 0)
337 && ((cnt & XPG_CODESET) == 0 || (cnt & XPG_NORM_CODESET) == 0))
338 {
339 if (dirlist_count > 1)
340 {
341 /* Iterate over all elements of the DIRLIST. */
342 char *dir = NULL;
343
344 while ((dir = __argz_next ((char *) dirlist, dirlist_len, dir))
345 != NULL)
346 retval->successor[entries++]
347 = _nl_make_l10nflist (l10nfile_list, dir, strlen (dir) + 1,
348 cnt, language, territory, codeset,
349 normalized_codeset, modifier, special,
350 sponsor, revision, filename, 1);
351 }
352 else
353 retval->successor[entries++]
354 = _nl_make_l10nflist (l10nfile_list, dirlist, dirlist_len,
355 cnt, language, territory, codeset,
356 normalized_codeset, modifier, special,
357 sponsor, revision, filename, 1);
358 }
359 retval->successor[entries] = NULL;
360
361 return retval;
362 }
363
364 /* Normalize codeset name. There is no standard for the codeset
365 names. Normalization allows the user to use any of the common
366 names. The return value is dynamically allocated and has to be
367 freed by the caller. */
368 const char *
_nl_normalize_codeset(const char * codeset,size_t name_len)369 _nl_normalize_codeset (const char *codeset, size_t name_len)
370 {
371 int len = 0;
372 int only_digit = 1;
373 char *retval;
374 char *wp;
375 size_t cnt;
376
377 for (cnt = 0; cnt < name_len; ++cnt)
378 if (isalnum ((unsigned char) codeset[cnt]))
379 {
380 ++len;
381
382 if (isalpha ((unsigned char) codeset[cnt]))
383 only_digit = 0;
384 }
385
386 retval = (char *) malloc ((only_digit ? 3 : 0) + len + 1);
387
388 if (retval != NULL)
389 {
390 if (only_digit)
391 wp = stpcpy (retval, "iso");
392 else
393 wp = retval;
394
395 for (cnt = 0; cnt < name_len; ++cnt)
396 if (isalpha ((unsigned char) codeset[cnt]))
397 *wp++ = tolower ((unsigned char) codeset[cnt]);
398 else if (isdigit ((unsigned char) codeset[cnt]))
399 *wp++ = codeset[cnt];
400
401 *wp = '\0';
402 }
403
404 return (const char *) retval;
405 }
406
407
408 /* @@ begin of epilog @@ */
409
410 /* We don't want libintl.a to depend on any other library. So we
411 avoid the non-standard function stpcpy. In GNU C Library this
412 function is available, though. Also allow the symbol HAVE_STPCPY
413 to be defined. */
414 #if !_LIBC && !HAVE_STPCPY
415 static char *
stpcpy(char * dest,const char * src)416 stpcpy (char *dest, const char *src)
417 {
418 while ((*dest++ = *src++) != '\0')
419 /* Do nothing. */ ;
420 return dest - 1;
421 }
422 #endif
423