1 /* 2 * libjingle 3 * Copyright 2004--2005, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 // Because global constant initialization order is undefined 29 // globals cannot depend on other objects to be instantiated. 30 // This class creates string objects within static methods 31 // such that globals may refer to these constants by the 32 // accessor function and they are guaranteed to be initialized. 33 34 #ifndef TALK_XMLLITE_CONSTANTS_H_ 35 #define TALK_XMLLITE_CONSTANTS_H_ 36 37 #include <string> 38 39 #define STR_EMPTY XmlConstants::str_empty() 40 #define NS_XML XmlConstants::ns_xml() 41 #define NS_XMLNS XmlConstants::ns_xmlns() 42 #define STR_XMLNS XmlConstants::str_xmlns() 43 #define STR_XML XmlConstants::str_xml() 44 #define STR_VERSION XmlConstants::str_version() 45 #define STR_ENCODING XmlConstants::str_encoding() 46 namespace buzz { 47 48 class XmlConstants { 49 public: 50 static const std::string & str_empty(); 51 static const std::string & ns_xml(); 52 static const std::string & ns_xmlns(); 53 static const std::string & str_xmlns(); 54 static const std::string & str_xml(); 55 static const std::string & str_version(); 56 static const std::string & str_encoding(); 57 }; 58 59 } 60 61 #endif // TALK_XMLLITE_CONSTANTS_H_ 62