1 /* Implementation of the bindtextdomain(3) function 2 Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 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 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17 18 #ifdef HAVE_CONFIG_H 19 # include <config.h> 20 #endif 21 22 #if defined STDC_HEADERS || defined _LIBC 23 # include <stdlib.h> 24 #else 25 # ifdef HAVE_MALLOC_H 26 # include <malloc.h> 27 # else 28 void free (); 29 # endif 30 #endif 31 32 #if defined HAVE_STRING_H || defined _LIBC 33 # include <string.h> 34 #else 35 # include <strings.h> 36 # ifndef memcpy 37 # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) 38 # endif 39 #endif 40 41 #ifdef _LIBC 42 # include <libintl.h> 43 #else 44 # include "libgettext.h" 45 #endif 46 #include "gettext.h" 47 #include "gettextP.h" 48 49 /* @@ end of prolog @@ */ 50 51 /* Contains the default location of the message catalogs. */ 52 extern const char _nl_default_dirname[]; 53 54 /* List with bindings of specific domains. */ 55 extern struct binding *_nl_domain_bindings; 56 57 58 /* Names for the libintl functions are a problem. They must not clash 59 with existing names and they should follow ANSI C. But this source 60 code is also used in GNU C Library where the names have a __ 61 prefix. So we have to make a difference here. */ 62 #ifdef _LIBC 63 # define BINDTEXTDOMAIN __bindtextdomain 64 # ifndef strdup 65 # define strdup(str) __strdup (str) 66 # endif 67 #else 68 # define BINDTEXTDOMAIN bindtextdomain__ 69 #endif 70 71 /* Specify that the DOMAINNAME message catalog will be found 72 in DIRNAME rather than in the system locale data base. */ 73 char * 74 BINDTEXTDOMAIN (domainname, dirname) 75 const char *domainname; 76 const char *dirname; 77 { 78 struct binding *binding; 79 80 /* Some sanity checks. */ 81 if (domainname == NULL || domainname[0] == '\0') 82 return NULL; 83 84 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) 85 { 86 int compare = strcmp (domainname, binding->domainname); 87 if (compare == 0) 88 /* We found it! */ 89 break; 90 if (compare < 0) 91 { 92 /* It is not in the list. */ 93 binding = NULL; 94 break; 95 } 96 } 97 98 if (dirname == NULL) 99 /* The current binding has be to returned. */ 100 return binding == NULL ? (char *) _nl_default_dirname : binding->dirname; 101 102 if (binding != NULL) 103 { 104 /* The domain is already bound. If the new value and the old 105 one are equal we simply do nothing. Otherwise replace the 106 old binding. */ 107 if (strcmp (dirname, binding->dirname) != 0) 108 { 109 char *new_dirname; 110 111 if (strcmp (dirname, _nl_default_dirname) == 0) 112 new_dirname = (char *) _nl_default_dirname; 113 else 114 { 115 #if defined _LIBC || defined HAVE_STRDUP 116 new_dirname = strdup (dirname); 117 if (new_dirname == NULL) 118 return NULL; 119 #else 120 size_t len = strlen (dirname) + 1; 121 new_dirname = (char *) malloc (len); 122 if (new_dirname == NULL) 123 return NULL; 124 125 memcpy (new_dirname, dirname, len); 126 #endif 127 } 128 129 if (binding->dirname != _nl_default_dirname) 130 free (binding->dirname); 131 132 binding->dirname = new_dirname; 133 } 134 } 135 else 136 { 137 /* We have to create a new binding. */ 138 #if !defined _LIBC && !defined HAVE_STRDUP 139 size_t len; 140 #endif 141 struct binding *new_binding = 142 (struct binding *) malloc (sizeof (*new_binding)); 143 144 if (new_binding == NULL) 145 return NULL; 146 147 #if defined _LIBC || defined HAVE_STRDUP 148 new_binding->domainname = strdup (domainname); 149 if (new_binding->domainname == NULL) 150 return NULL; 151 #else 152 len = strlen (domainname) + 1; 153 new_binding->domainname = (char *) malloc (len); 154 if (new_binding->domainname == NULL) 155 return NULL; 156 memcpy (new_binding->domainname, domainname, len); 157 #endif 158 159 if (strcmp (dirname, _nl_default_dirname) == 0) 160 new_binding->dirname = (char *) _nl_default_dirname; 161 else 162 { 163 #if defined _LIBC || defined HAVE_STRDUP 164 new_binding->dirname = strdup (dirname); 165 if (new_binding->dirname == NULL) 166 return NULL; 167 #else 168 len = strlen (dirname) + 1; 169 new_binding->dirname = (char *) malloc (len); 170 if (new_binding->dirname == NULL) 171 return NULL; 172 memcpy (new_binding->dirname, dirname, len); 173 #endif 174 } 175 176 /* Now enqueue it. */ 177 if (_nl_domain_bindings == NULL 178 || strcmp (domainname, _nl_domain_bindings->domainname) < 0) 179 { 180 new_binding->next = _nl_domain_bindings; 181 _nl_domain_bindings = new_binding; 182 } 183 else 184 { 185 binding = _nl_domain_bindings; 186 while (binding->next != NULL 187 && strcmp (domainname, binding->next->domainname) > 0) 188 binding = binding->next; 189 190 new_binding->next = binding->next; 191 binding->next = new_binding; 192 } 193 194 binding = new_binding; 195 } 196 197 return binding->dirname; 198 } 199 200 #ifdef _LIBC 201 /* Alias for function name in GNU C Library. */ 202 weak_alias (__bindtextdomain, bindtextdomain); 203 #endif 204