author | hgs |
Thu, 14 Oct 2010 14:15:50 +0530 | |
changeset 72 | 403e7f6ed6c5 |
parent 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* Determine a canonical name for the current locale's character encoding. |
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Copyright (C) 2000-2006 Free Software Foundation, Inc. |
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Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the terms of the GNU Library General Public License as published |
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by the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Library General Public License for more details. |
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You should have received a copy of the GNU Library General Public |
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License along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
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USA. */ |
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/* Written by Bruno Haible <bruno@clisp.org>. */ |
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#include "config.h" |
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/* Specification. */ |
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#include "localcharset.h" |
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#include <stddef.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#ifndef __SYMBIAN32__ |
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#if defined _WIN32 || defined __WIN32__ |
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# define WIN32_NATIVE |
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#endif |
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#endif//__SYMBIAN32__ |
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#if (EMULATOR) |
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#include "glib_wsd.h" |
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#endif//EMULATOR |
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#if defined __EMX__ |
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/* Assume EMX program runs on OS/2, even if compiled under DOS. */ |
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# define OS2 |
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#endif |
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#if !defined WIN32_NATIVE |
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# if HAVE_LANGINFO_CODESET |
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# include <langinfo.h> |
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# else |
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# if 0 /* see comment below */ |
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# include <locale.h> |
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# endif |
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# endif |
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# ifdef __CYGWIN__ |
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# define WIN32_LEAN_AND_MEAN |
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# include <windows.h> |
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# endif |
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#elif defined WIN32_NATIVE |
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# define WIN32_LEAN_AND_MEAN |
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# include <windows.h> |
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#endif |
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#if defined OS2 |
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# define INCL_DOS |
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# include <os2.h> |
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#endif |
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#if ENABLE_RELOCATABLE |
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# include "relocatable.h" |
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#else |
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# define relocate(pathname) (pathname) |
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#endif |
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#ifndef __SYMBIAN32__ |
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/* Get LIBDIR. */ |
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#ifndef LIBDIR |
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# include "configmake.h" |
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#endif |
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#endif//__SYMBIAN32__ |
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#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__ |
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/* Win32, Cygwin, OS/2, DOS */ |
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# define ISSLASH(C) ((C) == '/' || (C) == '\\') |
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#endif |
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#ifndef DIRECTORY_SEPARATOR |
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# define DIRECTORY_SEPARATOR '/' |
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#endif |
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#ifndef ISSLASH |
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# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR) |
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#endif |
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#if HAVE_DECL_GETC_UNLOCKED |
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# undef getc |
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# define getc getc_unlocked |
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#endif |
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/* The following static variable is declared 'volatile' to avoid a |
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possible multithread problem in the function get_charset_aliases. If we |
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are running in a threaded environment, and if two threads initialize |
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'charset_aliases' simultaneously, both will produce the same value, |
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and everything will be ok if the two assignments to 'charset_aliases' |
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are atomic. But I don't know what will happen if the two assignments mix. */ |
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105 |
#if __STDC__ != 1 |
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106 |
# define volatile /* empty */ |
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107 |
#endif |
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|
108 |
/* Pointer to the contents of the charset.alias file, if it has already been |
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109 |
read, else NULL. Its format is: |
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|
110 |
ALIAS_1 '\0' CANONICAL_1 '\0' ... ALIAS_n '\0' CANONICAL_n '\0' '\0' */ |
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|
111 |
|
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|
112 |
#if EMULATOR |
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113 |
PLS(charset_aliases,localcharset,const char * volatile) |
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114 |
#define charset_aliases (*FUNCTION_NAME(charset_aliases,localcharset)()) |
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115 |
#else |
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116 |
static const char * volatile charset_aliases; |
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117 |
#endif /* EMULATOR */ |
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118 |
|
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119 |
/* Return a pointer to the contents of the charset.alias file. */ |
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120 |
const char * |
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121 |
_g_locale_get_charset_aliases (void) |
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122 |
{ |
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123 |
const char *cp; |
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124 |
|
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125 |
cp = charset_aliases; |
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126 |
if (cp == NULL) |
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127 |
{ |
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128 |
#if !(defined VMS || defined WIN32_NATIVE || defined __CYGWIN__) |
72 | 129 |
#ifndef __SYMBIAN32__ |
18
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130 |
FILE *fp; |
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131 |
const char *dir; |
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132 |
const char *base = "charset.alias"; |
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133 |
char *file_name; |
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134 |
|
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|
135 |
/* Make it possible to override the charset.alias location. This is |
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|
136 |
necessary for running the testsuite before "make install". */ |
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|
137 |
dir = getenv ("CHARSETALIASDIR"); |
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|
138 |
if (dir == NULL || dir[0] == '\0') |
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|
139 |
dir = relocate (LIBDIR); |
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|
140 |
|
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|
141 |
/* Concatenate dir and base into freshly allocated file_name. */ |
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|
142 |
{ |
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|
143 |
size_t dir_len = strlen (dir); |
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|
144 |
size_t base_len = strlen (base); |
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|
145 |
int add_slash = (dir_len > 0 && !ISSLASH (dir[dir_len - 1])); |
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|
146 |
file_name = (char *) malloc (dir_len + add_slash + base_len + 1); |
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|
147 |
if (file_name != NULL) |
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|
148 |
{ |
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|
149 |
memcpy (file_name, dir, dir_len); |
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|
150 |
if (add_slash) |
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|
151 |
file_name[dir_len] = DIRECTORY_SEPARATOR; |
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|
152 |
memcpy (file_name + dir_len + add_slash, base, base_len + 1); |
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|
153 |
} |
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154 |
} |
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|
155 |
|
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|
156 |
if (file_name == NULL || (fp = fopen (file_name, "r")) == NULL) |
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|
157 |
/* Out of memory or file not found, treat it as empty. */ |
72 | 158 |
#endif//__SYMBIAN32__ |
18
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|
159 |
cp = ""; |
72 | 160 |
#ifndef __SYMBIAN32__ |
18
47c74d1534e1
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|
161 |
else |
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|
162 |
{ |
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|
163 |
/* Parse the file's contents. */ |
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|
164 |
char *res_ptr = NULL; |
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|
165 |
size_t res_size = 0; |
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|
166 |
|
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|
167 |
for (;;) |
47c74d1534e1
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|
168 |
{ |
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|
169 |
int c; |
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|
170 |
char buf1[50+1]; |
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|
171 |
char buf2[50+1]; |
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|
172 |
size_t l1, l2; |
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|
173 |
char *old_res_ptr; |
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|
174 |
|
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|
175 |
c = getc (fp); |
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|
176 |
if (c == EOF) |
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|
177 |
break; |
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|
178 |
if (c == '\n' || c == ' ' || c == '\t') |
47c74d1534e1
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|
179 |
continue; |
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|
180 |
if (c == '#') |
47c74d1534e1
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|
181 |
{ |
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|
182 |
/* Skip comment, to end of line. */ |
47c74d1534e1
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|
183 |
do |
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|
184 |
c = getc (fp); |
47c74d1534e1
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|
185 |
while (!(c == EOF || c == '\n')); |
47c74d1534e1
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|
186 |
if (c == EOF) |
47c74d1534e1
Revision: 201011
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|
187 |
break; |
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|
188 |
continue; |
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|
189 |
} |
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|
190 |
ungetc (c, fp); |
47c74d1534e1
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|
191 |
if (fscanf (fp, "%50s %50s", buf1, buf2) < 2) |
47c74d1534e1
Revision: 201011
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|
192 |
break; |
47c74d1534e1
Revision: 201011
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parents:
diff
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|
193 |
l1 = strlen (buf1); |
47c74d1534e1
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diff
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|
194 |
l2 = strlen (buf2); |
47c74d1534e1
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|
195 |
old_res_ptr = res_ptr; |
47c74d1534e1
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|
196 |
if (res_size == 0) |
47c74d1534e1
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|
197 |
{ |
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|
198 |
res_size = l1 + 1 + l2 + 1; |
47c74d1534e1
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|
199 |
res_ptr = (char *) malloc (res_size + 1); |
47c74d1534e1
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diff
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|
200 |
} |
47c74d1534e1
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diff
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|
201 |
else |
47c74d1534e1
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diff
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|
202 |
{ |
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parents:
diff
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|
203 |
res_size += l1 + 1 + l2 + 1; |
47c74d1534e1
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parents:
diff
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|
204 |
res_ptr = (char *) realloc (res_ptr, res_size + 1); |
47c74d1534e1
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diff
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|
205 |
} |
47c74d1534e1
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parents:
diff
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|
206 |
if (res_ptr == NULL) |
47c74d1534e1
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parents:
diff
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|
207 |
{ |
47c74d1534e1
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diff
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|
208 |
/* Out of memory. */ |
47c74d1534e1
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diff
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|
209 |
res_size = 0; |
47c74d1534e1
Revision: 201011
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parents:
diff
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|
210 |
if (old_res_ptr != NULL) |
47c74d1534e1
Revision: 201011
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parents:
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free (old_res_ptr); |
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break; |
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} |
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strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1); |
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strcpy (res_ptr + res_size - (l2 + 1), buf2); |
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} |
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fclose (fp); |
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if (res_size == 0) |
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cp = ""; |
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else |
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221 |
{ |
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*(res_ptr + res_size) = '\0'; |
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cp = res_ptr; |
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} |
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} |
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226 |
|
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if (file_name != NULL) |
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free (file_name); |
72 | 229 |
#endif//__SYMBIAN32__ |
18
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230 |
#else |
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231 |
|
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# if defined VMS |
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/* To avoid the troubles of an extra file charset.alias_vms in the |
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sources of many GNU packages, simply inline the aliases here. */ |
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/* The list of encodings is taken from the OpenVMS 7.3-1 documentation |
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"Compaq C Run-Time Library Reference Manual for OpenVMS systems" |
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section 10.7 "Handling Different Character Sets". */ |
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cp = "ISO8859-1" "\0" "ISO-8859-1" "\0" |
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"ISO8859-2" "\0" "ISO-8859-2" "\0" |
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"ISO8859-5" "\0" "ISO-8859-5" "\0" |
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"ISO8859-7" "\0" "ISO-8859-7" "\0" |
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"ISO8859-8" "\0" "ISO-8859-8" "\0" |
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"ISO8859-9" "\0" "ISO-8859-9" "\0" |
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/* Japanese */ |
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"eucJP" "\0" "EUC-JP" "\0" |
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"SJIS" "\0" "SHIFT_JIS" "\0" |
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"DECKANJI" "\0" "DEC-KANJI" "\0" |
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"SDECKANJI" "\0" "EUC-JP" "\0" |
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/* Chinese */ |
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"eucTW" "\0" "EUC-TW" "\0" |
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"DECHANYU" "\0" "DEC-HANYU" "\0" |
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"DECHANZI" "\0" "GB2312" "\0" |
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/* Korean */ |
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"DECKOREAN" "\0" "EUC-KR" "\0"; |
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# endif |
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256 |
|
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# if defined WIN32_NATIVE || defined __CYGWIN__ |
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/* To avoid the troubles of installing a separate file in the same |
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directory as the DLL and of retrieving the DLL's directory at |
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runtime, simply inline the aliases here. */ |
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261 |
|
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cp = "CP936" "\0" "GBK" "\0" |
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"CP1361" "\0" "JOHAB" "\0" |
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"CP20127" "\0" "ASCII" "\0" |
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"CP20866" "\0" "KOI8-R" "\0" |
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"CP20936" "\0" "GB2312" "\0" |
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"CP21866" "\0" "KOI8-RU" "\0" |
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"CP28591" "\0" "ISO-8859-1" "\0" |
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"CP28592" "\0" "ISO-8859-2" "\0" |
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"CP28593" "\0" "ISO-8859-3" "\0" |
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"CP28594" "\0" "ISO-8859-4" "\0" |
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"CP28595" "\0" "ISO-8859-5" "\0" |
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"CP28596" "\0" "ISO-8859-6" "\0" |
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"CP28597" "\0" "ISO-8859-7" "\0" |
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"CP28598" "\0" "ISO-8859-8" "\0" |
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"CP28599" "\0" "ISO-8859-9" "\0" |
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"CP28605" "\0" "ISO-8859-15" "\0" |
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"CP38598" "\0" "ISO-8859-8" "\0" |
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"CP51932" "\0" "EUC-JP" "\0" |
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"CP51936" "\0" "GB2312" "\0" |
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"CP51949" "\0" "EUC-KR" "\0" |
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"CP51950" "\0" "EUC-TW" "\0" |
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"CP54936" "\0" "GB18030" "\0" |
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"CP65001" "\0" "UTF-8" "\0"; |
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# endif |
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#endif |
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287 |
|
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charset_aliases = cp; |
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} |
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290 |
|
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return cp; |
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} |
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293 |
|
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/* Determine the current locale's character encoding, and canonicalize it |
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into one of the canonical names listed in config.charset. |
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The result must not be freed; it is statically allocated. |
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If the canonical name cannot be determined, the result is a non-canonical |
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name. */ |
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299 |
|
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const char * |
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_g_locale_charset_raw (void) |
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302 |
{ |
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const char *codeset; |
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304 |
|
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#if !(defined WIN32_NATIVE || defined OS2) |
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306 |
|
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# if HAVE_LANGINFO_CODESET |
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308 |
|
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/* Most systems support nl_langinfo (CODESET) nowadays. */ |
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codeset = nl_langinfo (CODESET); |
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311 |
|
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312 |
# ifdef __CYGWIN__ |
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/* Cygwin 2006 does not have locales. nl_langinfo (CODESET) always |
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returns "US-ASCII". As long as this is not fixed, return the suffix |
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of the locale name from the environment variables (if present) or |
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the codepage as a number. */ |
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if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0) |
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318 |
{ |
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const char *locale; |
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static char buf[2 + 10 + 1]; |
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321 |
|
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locale = getenv ("LC_ALL"); |
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if (locale == NULL || locale[0] == '\0') |
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324 |
{ |
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locale = getenv ("LC_CTYPE"); |
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if (locale == NULL || locale[0] == '\0') |
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locale = getenv ("LANG"); |
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} |
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if (locale != NULL && locale[0] != '\0') |
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330 |
{ |
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/* If the locale name contains an encoding after the dot, return |
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it. */ |
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const char *dot = strchr (locale, '.'); |
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334 |
|
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if (dot != NULL) |
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336 |
{ |
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const char *modifier; |
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338 |
|
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dot++; |
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/* Look for the possible @... trailer and remove it, if any. */ |
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modifier = strchr (dot, '@'); |
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if (modifier == NULL) |
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return dot; |
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if (modifier - dot < sizeof (buf)) |
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345 |
{ |
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memcpy (buf, dot, modifier - dot); |
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buf [modifier - dot] = '\0'; |
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return buf; |
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349 |
} |
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350 |
} |
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351 |
} |
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352 |
|
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353 |
/* Woe32 has a function returning the locale's codepage as a number. */ |
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sprintf (buf, "CP%u", GetACP ()); |
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codeset = buf; |
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356 |
} |
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357 |
# endif |
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358 |
|
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359 |
# else |
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360 |
|
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361 |
/* On old systems which lack it, use setlocale or getenv. */ |
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362 |
const char *locale = NULL; |
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363 |
|
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/* But most old systems don't have a complete set of locales. Some |
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(like SunOS 4 or DJGPP) have only the C locale. Therefore we don't |
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use setlocale here; it would return "C" when it doesn't support the |
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locale name the user has set. */ |
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# if 0 |
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locale = setlocale (LC_CTYPE, NULL); |
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370 |
# endif |
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371 |
if (locale == NULL || locale[0] == '\0') |
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372 |
{ |
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locale = getenv ("LC_ALL"); |
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374 |
if (locale == NULL || locale[0] == '\0') |
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375 |
{ |
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376 |
locale = getenv ("LC_CTYPE"); |
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377 |
if (locale == NULL || locale[0] == '\0') |
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locale = getenv ("LANG"); |
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379 |
} |
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380 |
} |
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381 |
|
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382 |
/* On some old systems, one used to set locale = "iso8859_1". On others, |
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383 |
you set it to "language_COUNTRY.charset". In any case, we resolve it |
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384 |
through the charset.alias file. */ |
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385 |
codeset = locale; |
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386 |
|
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387 |
# endif |
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388 |
|
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389 |
#elif defined WIN32_NATIVE |
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390 |
|
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391 |
static char buf[2 + 10 + 1]; |
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392 |
|
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393 |
/* Woe32 has a function returning the locale's codepage as a number. */ |
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394 |
sprintf (buf, "CP%u", GetACP ()); |
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395 |
codeset = buf; |
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396 |
|
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397 |
#elif defined OS2 |
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398 |
|
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399 |
const char *locale; |
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400 |
static char buf[2 + 10 + 1]; |
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401 |
ULONG cp[3]; |
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402 |
ULONG cplen; |
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403 |
|
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404 |
/* Allow user to override the codeset, as set in the operating system, |
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405 |
with standard language environment variables. */ |
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406 |
locale = getenv ("LC_ALL"); |
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|
407 |
if (locale == NULL || locale[0] == '\0') |
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|
408 |
{ |
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409 |
locale = getenv ("LC_CTYPE"); |
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410 |
if (locale == NULL || locale[0] == '\0') |
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411 |
locale = getenv ("LANG"); |
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412 |
} |
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413 |
if (locale != NULL && locale[0] != '\0') |
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414 |
{ |
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415 |
/* If the locale name contains an encoding after the dot, return it. */ |
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Revision: 201011
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parents:
diff
changeset
|
416 |
const char *dot = strchr (locale, '.'); |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
if (dot != NULL) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
const char *modifier; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
dot++; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
/* Look for the possible @... trailer and remove it, if any. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
modifier = strchr (dot, '@'); |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
if (modifier == NULL) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
return dot; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
if (modifier - dot < sizeof (buf)) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
memcpy (buf, dot, modifier - dot); |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
buf [modifier - dot] = '\0'; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
return buf; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
} |
47c74d1534e1
Revision: 201011
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parents:
diff
changeset
|
434 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
/* Resolve through the charset.alias file. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
codeset = locale; |
47c74d1534e1
Revision: 201011
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parents:
diff
changeset
|
437 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
else |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
/* OS/2 has a function returning the locale's codepage as a number. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
if (DosQueryCp (sizeof (cp), cp, &cplen)) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
codeset = ""; |
47c74d1534e1
Revision: 201011
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parents:
diff
changeset
|
443 |
else |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
sprintf (buf, "CP%u", cp[0]); |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
codeset = buf; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
#endif |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
|
47c74d1534e1
Revision: 201011
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parents:
diff
changeset
|
452 |
return codeset; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
const char * |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
_g_locale_charset_unalias (const char *codeset) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
const char *aliases; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
459 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
if (codeset == NULL) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
/* The canonical name cannot be determined. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
codeset = ""; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
/* Resolve alias. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
for (aliases = _g_locale_get_charset_aliases (); |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
*aliases != '\0'; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
if (strcmp (codeset, aliases) == 0 |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
|| (aliases[0] == '*' && aliases[1] == '\0')) |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
{ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
codeset = aliases + strlen (aliases) + 1; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
break; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
} |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
/* Don't return an empty string. GNU libc and GNU libiconv interpret |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
the empty string as denoting "the locale's character encoding", |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
thus GNU libiconv would call this function a second time. */ |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
if (codeset[0] == '\0') |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
codeset = "ASCII"; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
|
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
return codeset; |
47c74d1534e1
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
} |