1/* Compatibility code for gettext-using-catgets interface. 2 Copyright (C) 1995 Free Software Foundation, Inc. 3 4The GNU C Library is free software; you can redistribute it and/or 5modify it under the terms of the GNU Library General Public License as 6published by the Free Software Foundation; either version 2 of the 7License, or (at your option) any later version. 8 9The GNU C Library is distributed in the hope that it will be useful, 10but WITHOUT ANY WARRANTY; without even the implied warranty of 11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12Library General Public License for more details. 13 14You should have received a copy of the GNU Library General Public 15License along with the GNU C Library; see the file COPYING.LIB. If 16not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 17Boston, MA 02111-1307, USA. */ 18 19#ifdef HAVE_CONFIG_H 20# include <config.h> 21#endif 22 23#include <stdio.h> 24 25#ifdef STDC_HEADERS 26# include <stdlib.h> 27# include <string.h> 28#else 29char *getenv (); 30# ifdef HAVE_MALLOC_H 31# include <malloc.h> 32# endif 33#endif 34 35#ifdef HAVE_NL_TYPES_H 36# include <nl_types.h> 37#endif 38 39#include "libgettext.h" 40 41/* @@ end of prolog @@ */ 42 43/* The catalog descriptor. */ 44static nl_catd catalog = (nl_catd) -1; 45 46/* Name of the default catalog. */ 47static const char default_catalog_name[] = "messages"; 48 49/* Name of currently used catalog. */ 50static const char *catalog_name = default_catalog_name; 51 52/* Get ID for given string. If not found return -1. */ 53static int msg_to_cat_id __P ((const char *msg)); 54 55/* Substitution for systems lacking this function in their C library. */ 56#if !_LIBC && !HAVE_STPCPY 57static char *stpcpy __P ((char *dest, const char *src)); 58#endif 59 60 61/* Set currently used domain/catalog. */ 62char * 63textdomain (domainname) 64 const char *domainname; 65{ 66 nl_catd new_catalog; 67 char *new_name; 68 size_t new_name_len; 69 char *lang; 70 71#if HAVE_SETLOCALE && HAVE_LC_MESSAGES && HAVE_SETLOCALE_NULL 72 lang = setlocale (LC_MESSAGES, NULL); 73#else 74 lang = getenv ("LC_ALL"); 75 if (lang == NULL || lang[0] == '\0') 76 { 77 lang = getenv ("LC_MESSAGES"); 78 if (lang == NULL || lang[0] == '\0') 79 lang = getenv ("LANG"); 80 } 81#endif 82 if (lang == NULL || lang[0] == '\0') 83 lang = "C"; 84 85 /* See whether name of currently used domain is asked. */ 86 if (domainname == NULL) 87 return (char *) catalog_name; 88 89 if (domainname[0] == '\0') 90 domainname = default_catalog_name; 91 92 /* Compute length of added path element. */ 93 new_name_len = sizeof (LOCALEDIR) - 1 + 1 + strlen (lang) 94 + sizeof ("/LC_MESSAGES/") - 1 + sizeof (PACKAGE) - 1 95 + sizeof (".cat"); 96 97 new_name = (char *) malloc (new_name_len); 98 if (new_name == NULL) 99 return NULL; 100 101 strcpy (new_name, PACKAGE); 102 new_catalog = catopen (new_name, 0); 103 104 if (new_catalog == (nl_catd) -1) 105 { 106 /* NLSPATH search didn't work, try absolute path */ 107 sprintf (new_name, "%s/%s/LC_MESSAGES/%s.cat", LOCALEDIR, lang, 108 PACKAGE); 109 new_catalog = catopen (new_name, 0); 110 111 if (new_catalog == (nl_catd) -1) 112 { 113 free (new_name); 114 return (char *) catalog_name; 115 } 116 } 117 118 /* Close old catalog. */ 119 if (catalog != (nl_catd) -1) 120 catclose (catalog); 121 if (catalog_name != default_catalog_name) 122 free ((char *) catalog_name); 123 124 catalog = new_catalog; 125 catalog_name = new_name; 126 127 return (char *) catalog_name; 128} 129 130char * 131bindtextdomain (domainname, dirname) 132 const char *domainname; 133 const char *dirname; 134{ 135#if HAVE_SETENV || HAVE_PUTENV 136 char *old_val, *new_val, *cp; 137 size_t new_val_len; 138 139 /* This does not make much sense here but to be compatible do it. */ 140 if (domainname == NULL) 141 return NULL; 142 143 /* Compute length of added path element. If we use setenv we don't need 144 the first byts for NLSPATH=, but why complicate the code for this 145 peanuts. */ 146 new_val_len = sizeof ("NLSPATH=") - 1 + strlen (dirname) 147 + sizeof ("/%L/LC_MESSAGES/%N.cat"); 148 149 old_val = getenv ("NLSPATH"); 150 if (old_val == NULL || old_val[0] == '\0') 151 { 152 old_val = NULL; 153 new_val_len += 1 + sizeof (LOCALEDIR) - 1 154 + sizeof ("/%L/LC_MESSAGES/%N.cat"); 155 } 156 else 157 new_val_len += strlen (old_val); 158 159 new_val = (char *) malloc (new_val_len); 160 if (new_val == NULL) 161 return NULL; 162 163# if HAVE_SETENV 164 cp = new_val; 165# else 166 cp = stpcpy (new_val, "NLSPATH="); 167# endif 168 169 cp = stpcpy (cp, dirname); 170 cp = stpcpy (cp, "/%L/LC_MESSAGES/%N.cat:"); 171 172 if (old_val == NULL) 173 { 174# if __STDC__ 175 stpcpy (cp, LOCALEDIR "/%L/LC_MESSAGES/%N.cat"); 176# else 177 178 cp = stpcpy (cp, LOCALEDIR); 179 stpcpy (cp, "/%L/LC_MESSAGES/%N.cat"); 180# endif 181 } 182 else 183 stpcpy (cp, old_val); 184 185# if HAVE_SETENV 186 setenv ("NLSPATH", new_val, 1); 187 free (new_val); 188# else 189 putenv (new_val); 190 /* Do *not* free the environment entry we just entered. It is used 191 from now on. */ 192# endif 193 194#endif 195 196 return (char *) domainname; 197} 198 199#undef gettext 200char * 201gettext (msg) 202 const char *msg; 203{ 204 int msgid; 205 206 if (msg == NULL || catalog == (nl_catd) -1) 207 return (char *) msg; 208 209 /* Get the message from the catalog. We always use set number 1. 210 The message ID is computed by the function `msg_to_cat_id' 211 which works on the table generated by `po-to-tbl'. */ 212 msgid = msg_to_cat_id (msg); 213 if (msgid == -1) 214 return (char *) msg; 215 216 return catgets (catalog, 1, msgid, (char *) msg); 217} 218 219/* Look through the table `_msg_tbl' which has `_msg_tbl_length' entries 220 for the one equal to msg. If it is found return the ID. In case when 221 the string is not found return -1. */ 222static int 223msg_to_cat_id (msg) 224 const char *msg; 225{ 226 int cnt; 227 228 for (cnt = 0; cnt < _msg_tbl_length; ++cnt) 229 if (strcmp (msg, _msg_tbl[cnt]._msg) == 0) 230 return _msg_tbl[cnt]._msg_number; 231 232 return -1; 233} 234 235 236/* @@ begin of epilog @@ */ 237 238/* We don't want libintl.a to depend on any other library. So we 239 avoid the non-standard function stpcpy. In GNU C Library this 240 function is available, though. Also allow the symbol HAVE_STPCPY 241 to be defined. */ 242#if !_LIBC && !HAVE_STPCPY 243static char * 244stpcpy (dest, src) 245 char *dest; 246 const char *src; 247{ 248 while ((*dest++ = *src++) != '\0') 249 /* Do nothing. */ ; 250 return dest - 1; 251} 252#endif 253