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Diffstat (limited to 'gettext-tools/src/libexpat-compat.c')
| -rw-r--r-- | gettext-tools/src/libexpat-compat.c | 327 |
1 files changed, 0 insertions, 327 deletions
diff --git a/gettext-tools/src/libexpat-compat.c b/gettext-tools/src/libexpat-compat.c deleted file mode 100644 index 33d264a..0000000 --- a/gettext-tools/src/libexpat-compat.c +++ /dev/null @@ -1,327 +0,0 @@ -/* xgettext libexpat compatibility. - Copyright (C) 2002-2003, 2005-2009, 2013, 2015 Free Software - Foundation, Inc. - - This file was written by Bruno Haible <haible@clisp.cons.org>, 2002. - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <stdlib.h> -#include <string.h> - -#if DYNLOAD_LIBEXPAT -# include <dlfcn.h> -#else -# if HAVE_LIBEXPAT -# include <expat.h> -# endif -#endif - -/* Keep the references to XML_GetCurrent{Line,Column}Number symbols - before loading libexpat-compat.h, since they are redefined to - rpl_XML_GetCurrent{Line,Column}Number . */ -#if !DYNLOAD_LIBEXPAT && XML_MAJOR_VERSION >= 2 -static void *p_XML_GetCurrentLineNumber = (void *) &XML_GetCurrentLineNumber; -static void *p_XML_GetCurrentColumnNumber = (void *) &XML_GetCurrentColumnNumber; -#endif - -#include "libexpat-compat.h" - -/* ======================= Different libexpat ABIs. ======================= */ - -/* There are three different ABIs of libexpat, regarding the functions - XML_GetCurrentLineNumber and XML_GetCurrentColumnNumber. - In expat < 2.0, they return an 'int'. - In expat >= 2.0, they return - - a 'long' if expat was compiled with the default flags, or - - a 'long long' if expat was compiled with -DXML_LARGE_SIZE. - But the <expat.h> include file does not contain the information whether - expat was compiled with -DXML_LARGE_SIZE; so the include file is lying! - For this information, we need to call XML_GetFeatureList(), for - expat >= 2.0.1; for expat = 2.0.0, we have to assume the default flags. */ - -#if !DYNLOAD_LIBEXPAT && XML_MAJOR_VERSION >= 2 - -/* expat >= 2.0 -> Return type is 'int64_t' worst-case. */ - -/* Return true if libexpat was compiled with -DXML_LARGE_SIZE. */ -static bool -is_XML_LARGE_SIZE_ABI (void) -{ - static bool tested; - static bool is_large; - - if (!tested) - { - const XML_Feature *features; - - is_large = false; - for (features = XML_GetFeatureList (); features->name != NULL; features++) - if (strcmp (features->name, "XML_LARGE_SIZE") == 0) - { - is_large = true; - break; - } - - tested = true; - } - return is_large; -} - -int64_t -rpl_XML_GetCurrentLineNumber (XML_Parser parser) -{ - if (is_XML_LARGE_SIZE_ABI ()) - return ((int64_t (*) (XML_Parser)) p_XML_GetCurrentLineNumber) (parser); - else - return ((long (*) (XML_Parser)) p_XML_GetCurrentLineNumber) (parser); -} - -int64_t -rpl_XML_GetCurrentColumnNumber (XML_Parser parser) -{ - if (is_XML_LARGE_SIZE_ABI ()) - return ((int64_t (*) (XML_Parser)) p_XML_GetCurrentColumnNumber) (parser); - else - return ((long (*) (XML_Parser)) p_XML_GetCurrentColumnNumber) (parser); -} -#endif - - -/* ===================== Dynamic loading of libexpat. ===================== */ - -#if DYNLOAD_LIBEXPAT - -static XML_Expat_Version (*p_XML_ExpatVersionInfo) (void); - -XML_Expat_Version -XML_ExpatVersionInfo (void) -{ - return (*p_XML_ExpatVersionInfo) (); -} - -static const XML_Feature * (*p_XML_GetFeatureList) (void); - -const XML_Feature * -XML_GetFeatureList (void) -{ - return (*p_XML_GetFeatureList) (); -} - -enum XML_Size_ABI -get_XML_Size_ABI (void) -{ - static bool tested; - static enum XML_Size_ABI abi; - - if (!tested) - { - if (XML_ExpatVersionInfo () .major >= 2) - /* expat >= 2.0 -> XML_Size is 'int64_t' or 'long'. */ - { - const XML_Feature *features; - - abi = is_long; - for (features = XML_GetFeatureList (); - features->name != NULL; - features++) - if (strcmp (features->name, "XML_LARGE_SIZE") == 0) - { - abi = is_int64_t; - break; - } - } - else - /* expat < 2.0 -> XML_Size is 'int'. */ - abi = is_int; - tested = true; - } - return abi; -} - -static XML_Parser (*p_XML_ParserCreate) (const XML_Char *encoding); - -XML_Parser -XML_ParserCreate (const XML_Char *encoding) -{ - return (*p_XML_ParserCreate) (encoding); -} - -static void (*p_XML_SetElementHandler) (XML_Parser parser, - XML_StartElementHandler start, - XML_EndElementHandler end); - -void -XML_SetElementHandler (XML_Parser parser, - XML_StartElementHandler start, - XML_EndElementHandler end) -{ - (*p_XML_SetElementHandler) (parser, start, end); -} - - -static void (*p_XML_SetCharacterDataHandler) (XML_Parser parser, - XML_CharacterDataHandler handler); - -void -XML_SetCharacterDataHandler (XML_Parser parser, - XML_CharacterDataHandler handler) -{ - (*p_XML_SetCharacterDataHandler) (parser, handler); -} - - -static void (*p_XML_SetCommentHandler) (XML_Parser parser, - XML_CommentHandler handler); - -void -XML_SetCommentHandler (XML_Parser parser, XML_CommentHandler handler) -{ - (*p_XML_SetCommentHandler) (parser, handler); -} - - -static int (*p_XML_Parse) (XML_Parser parser, const char *s, - int len, int isFinal); - -int -XML_Parse (XML_Parser parser, const char *s, int len, int isFinal) -{ - return (*p_XML_Parse) (parser, s, len, isFinal); -} - - -static enum XML_Error (*p_XML_GetErrorCode) (XML_Parser parser); - -enum XML_Error -XML_GetErrorCode (XML_Parser parser) -{ - return (*p_XML_GetErrorCode) (parser); -} - - -static void *p_XML_GetCurrentLineNumber; - -int64_t -XML_GetCurrentLineNumber (XML_Parser parser) -{ - switch (get_XML_Size_ABI ()) - { - case is_int: - return ((int (*) (XML_Parser)) p_XML_GetCurrentLineNumber) (parser); - case is_long: - return ((long (*) (XML_Parser)) p_XML_GetCurrentLineNumber) (parser); - case is_int64_t: - return ((int64_t (*) (XML_Parser)) p_XML_GetCurrentLineNumber) (parser); - default: - abort (); - } -} - -static void *p_XML_GetCurrentColumnNumber; - -int64_t -XML_GetCurrentColumnNumber (XML_Parser parser) -{ - switch (get_XML_Size_ABI ()) - { - case is_int: - return ((int (*) (XML_Parser)) p_XML_GetCurrentColumnNumber) (parser); - case is_long: - return ((long (*) (XML_Parser)) p_XML_GetCurrentColumnNumber) (parser); - case is_int64_t: - return ((int64_t (*) (XML_Parser)) p_XML_GetCurrentColumnNumber) (parser); - default: - abort (); - } -} - - -static const XML_LChar * (*p_XML_ErrorString) (int code); - -const XML_LChar * -XML_ErrorString (int code) -{ - return (*p_XML_ErrorString) (code); -} - -static void (*p_XML_ParserFree) (XML_Parser parser); - -void -XML_ParserFree (XML_Parser parser) -{ - return (*p_XML_ParserFree) (parser); -} - -static int libexpat_loaded = 0; - -bool -load_libexpat () -{ - if (libexpat_loaded == 0) - { - void *handle; - - /* Try to load libexpat-2.x. */ - handle = dlopen ("libexpat.so.1", RTLD_LAZY); - if (handle == NULL) - /* Try to load libexpat-1.x. */ - handle = dlopen ("libexpat.so.0", RTLD_LAZY); - if (handle != NULL - && (p_XML_ExpatVersionInfo = - (XML_Expat_Version (*) (void)) - dlsym (handle, "XML_ExpatVersionInfo")) != NULL - && (p_XML_GetFeatureList = - (const XML_Feature * (*) (void)) - dlsym (handle, "XML_GetFeatureList")) != NULL - && (p_XML_ParserCreate = - (XML_Parser (*) (const XML_Char *)) - dlsym (handle, "XML_ParserCreate")) != NULL - && (p_XML_SetElementHandler = - (void (*) (XML_Parser, XML_StartElementHandler, XML_EndElementHandler)) - dlsym (handle, "XML_SetElementHandler")) != NULL - && (p_XML_SetCharacterDataHandler = - (void (*) (XML_Parser, XML_CharacterDataHandler)) - dlsym (handle, "XML_SetCharacterDataHandler")) != NULL - && (p_XML_SetCommentHandler = - (void (*) (XML_Parser, XML_CommentHandler)) - dlsym (handle, "XML_SetCommentHandler")) != NULL - && (p_XML_Parse = - (int (*) (XML_Parser, const char *, int, int)) - dlsym (handle, "XML_Parse")) != NULL - && (p_XML_GetErrorCode = - (enum XML_Error (*) (XML_Parser)) - dlsym (handle, "XML_GetErrorCode")) != NULL - && (p_XML_GetCurrentLineNumber = - dlsym (handle, "XML_GetCurrentLineNumber")) != NULL - && (p_XML_GetCurrentColumnNumber = - dlsym (handle, "XML_GetCurrentColumnNumber")) != NULL - && (p_XML_ParserFree = - (void (*) (XML_Parser)) - dlsym (handle, "XML_ParserFree")) != NULL - && (p_XML_ErrorString = - (const XML_LChar * (*) (int)) - dlsym (handle, "XML_ErrorString")) != NULL) - libexpat_loaded = 1; - else - libexpat_loaded = -1; - } - return libexpat_loaded >= 0; -} - -#endif |