| 1 | /* Compatibility code for gettext-using-catgets interface. |
| 2 | Copyright (C) 1995, 1997 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 | #include <stdio.h> |
| 23 | |
| 24 | #ifdef STDC_HEADERS |
| 25 | # include <stdlib.h> |
| 26 | # include <string.h> |
| 27 | #else |
| 28 | char *getenv (); |
| 29 | # ifdef HAVE_MALLOC_H |
| 30 | # include <malloc.h> |
| 31 | # endif |
| 32 | #endif |
| 33 | |
| 34 | #ifdef HAVE_NL_TYPES_H |
| 35 | # include <nl_types.h> |
| 36 | #endif |
| 37 | |
| 38 | #include "libgettext.h" |
| 39 | |
| 40 | /* @@ end of prolog @@ */ |
| 41 | |
| 42 | /* XPG3 defines the result of `setlocale (category, NULL)' as: |
| 43 | ``Directs `setlocale()' to query `category' and return the current |
| 44 | setting of `local'.'' |
| 45 | However it does not specify the exact format. And even worse: POSIX |
| 46 | defines this not at all. So we can use this feature only on selected |
| 47 | system (e.g. those using GNU C Library). */ |
| 48 | #ifdef _LIBC |
| 49 | # define HAVE_LOCALE_NULL |
| 50 | #endif |
| 51 | |
| 52 | /* The catalog descriptor. */ |
| 53 | static nl_catd catalog = (nl_catd) -1; |
| 54 | |
| 55 | /* Name of the default catalog. */ |
| 56 | static const char default_catalog_name[] = "messages"; |
| 57 | |
| 58 | /* Name of currently used catalog. */ |
| 59 | static const char *catalog_name = default_catalog_name; |
| 60 | |
| 61 | /* Get ID for given string. If not found return -1. */ |
| 62 | static int msg_to_cat_id PARAMS ((const char *msg)); |
| 63 | |
| 64 | /* Substitution for systems lacking this function in their C library. */ |
| 65 | #if !_LIBC && !HAVE_STPCPY |
| 66 | static char *stpcpy PARAMS ((char *dest, const char *src)); |
| 67 | #endif |
| 68 | |
| 69 | |
| 70 | /* Set currently used domain/catalog. */ |
| 71 | char * |
| 72 | textdomain (domainname) |
| 73 | const char *domainname; |
| 74 | { |
| 75 | nl_catd new_catalog; |
| 76 | char *new_name; |
| 77 | size_t new_name_len; |
| 78 | char *lang; |
| 79 | |
| 80 | #if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES \ |
| 81 | && defined HAVE_LOCALE_NULL |
| 82 | lang = setlocale (LC_MESSAGES, NULL); |
| 83 | #else |
| 84 | lang = getenv ("LC_ALL"); |
| 85 | if (lang == NULL || lang[0] == '\0') |
| 86 | { |
| 87 | lang = getenv ("LC_MESSAGES"); |
| 88 | if (lang == NULL || lang[0] == '\0') |
| 89 | lang = getenv ("LANG"); |
| 90 | } |
| 91 | #endif |
| 92 | if (lang == NULL || lang[0] == '\0') |
| 93 | lang = "C"; |
| 94 | |
| 95 | /* See whether name of currently used domain is asked. */ |
| 96 | if (domainname == NULL) |
| 97 | return (char *) catalog_name; |
| 98 | |
| 99 | if (domainname[0] == '\0') |
| 100 | domainname = default_catalog_name; |
| 101 | |
| 102 | /* Compute length of added path element. */ |
| 103 | new_name_len = sizeof (LOCALEDIR) - 1 + 1 + strlen (lang) |
| 104 | + sizeof ("/LC_MESSAGES/") - 1 + sizeof (PACKAGE) - 1 |
| 105 | + sizeof (".cat"); |
| 106 | |
| 107 | new_name = (char *) malloc (new_name_len); |
| 108 | if (new_name == NULL) |
| 109 | return NULL; |
| 110 | |
| 111 | strcpy (new_name, PACKAGE); |
| 112 | new_catalog = catopen (new_name, 0); |
| 113 | |
| 114 | if (new_catalog == (nl_catd) -1) |
| 115 | { |
| 116 | /* NLSPATH search didn't work, try absolute path */ |
| 117 | sprintf (new_name, "%s/%s/LC_MESSAGES/%s.cat", LOCALEDIR, lang, |
| 118 | PACKAGE); |
| 119 | new_catalog = catopen (new_name, 0); |
| 120 | |
| 121 | if (new_catalog == (nl_catd) -1) |
| 122 | { |
| 123 | free (new_name); |
| 124 | return (char *) catalog_name; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | /* Close old catalog. */ |
| 129 | if (catalog != (nl_catd) -1) |
| 130 | catclose (catalog); |
| 131 | if (catalog_name != default_catalog_name) |
| 132 | free ((char *) catalog_name); |
| 133 | |
| 134 | catalog = new_catalog; |
| 135 | catalog_name = new_name; |
| 136 | |
| 137 | return (char *) catalog_name; |
| 138 | } |
| 139 | |
| 140 | char * |
| 141 | bindtextdomain (domainname, dirname) |
| 142 | const char *domainname; |
| 143 | const char *dirname; |
| 144 | { |
| 145 | #if HAVE_SETENV || HAVE_PUTENV |
| 146 | char *old_val, *new_val, *cp; |
| 147 | size_t new_val_len; |
| 148 | |
| 149 | /* This does not make much sense here but to be compatible do it. */ |
| 150 | if (domainname == NULL) |
| 151 | return NULL; |
| 152 | |
| 153 | /* Compute length of added path element. If we use setenv we don't need |
| 154 | the first byts for NLSPATH=, but why complicate the code for this |
| 155 | peanuts. */ |
| 156 | new_val_len = sizeof ("NLSPATH=") - 1 + strlen (dirname) |
| 157 | + sizeof ("/%L/LC_MESSAGES/%N.cat"); |
| 158 | |
| 159 | old_val = getenv ("NLSPATH"); |
| 160 | if (old_val == NULL || old_val[0] == '\0') |
| 161 | { |
| 162 | old_val = NULL; |
| 163 | new_val_len += 1 + sizeof (LOCALEDIR) - 1 |
| 164 | + sizeof ("/%L/LC_MESSAGES/%N.cat"); |
| 165 | } |
| 166 | else |
| 167 | new_val_len += strlen (old_val); |
| 168 | |
| 169 | new_val = (char *) malloc (new_val_len); |
| 170 | if (new_val == NULL) |
| 171 | return NULL; |
| 172 | |
| 173 | # if HAVE_SETENV |
| 174 | cp = new_val; |
| 175 | # else |
| 176 | cp = stpcpy (new_val, "NLSPATH="); |
| 177 | # endif |
| 178 | |
| 179 | cp = stpcpy (cp, dirname); |
| 180 | cp = stpcpy (cp, "/%L/LC_MESSAGES/%N.cat:"); |
| 181 | |
| 182 | if (old_val == NULL) |
| 183 | { |
| 184 | # if __STDC__ |
| 185 | stpcpy (cp, LOCALEDIR "/%L/LC_MESSAGES/%N.cat"); |
| 186 | # else |
| 187 | |
| 188 | cp = stpcpy (cp, LOCALEDIR); |
| 189 | stpcpy (cp, "/%L/LC_MESSAGES/%N.cat"); |
| 190 | # endif |
| 191 | } |
| 192 | else |
| 193 | stpcpy (cp, old_val); |
| 194 | |
| 195 | # if HAVE_SETENV |
| 196 | setenv ("NLSPATH", new_val, 1); |
| 197 | free (new_val); |
| 198 | # else |
| 199 | putenv (new_val); |
| 200 | /* Do *not* free the environment entry we just entered. It is used |
| 201 | from now on. */ |
| 202 | # endif |
| 203 | |
| 204 | #endif |
| 205 | |
| 206 | return (char *) domainname; |
| 207 | } |
| 208 | |
| 209 | #undef gettext |
| 210 | char * |
| 211 | gettext (msg) |
| 212 | const char *msg; |
| 213 | { |
| 214 | int msgid; |
| 215 | |
| 216 | if (msg == NULL || catalog == (nl_catd) -1) |
| 217 | return (char *) msg; |
| 218 | |
| 219 | /* Get the message from the catalog. We always use set number 1. |
| 220 | The message ID is computed by the function `msg_to_cat_id' |
| 221 | which works on the table generated by `po-to-tbl'. */ |
| 222 | msgid = msg_to_cat_id (msg); |
| 223 | if (msgid == -1) |
| 224 | return (char *) msg; |
| 225 | |
| 226 | return catgets (catalog, 1, msgid, (char *) msg); |
| 227 | } |
| 228 | |
| 229 | /* Look through the table `_msg_tbl' which has `_msg_tbl_length' entries |
| 230 | for the one equal to msg. If it is found return the ID. In case when |
| 231 | the string is not found return -1. */ |
| 232 | static int |
| 233 | msg_to_cat_id (msg) |
| 234 | const char *msg; |
| 235 | { |
| 236 | int cnt; |
| 237 | |
| 238 | for (cnt = 0; cnt < _msg_tbl_length; ++cnt) |
| 239 | if (strcmp (msg, _msg_tbl[cnt]._msg) == 0) |
| 240 | return _msg_tbl[cnt]._msg_number; |
| 241 | |
| 242 | return -1; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | /* @@ begin of epilog @@ */ |
| 247 | |
| 248 | /* We don't want libintl.a to depend on any other library. So we |
| 249 | avoid the non-standard function stpcpy. In GNU C Library this |
| 250 | function is available, though. Also allow the symbol HAVE_STPCPY |
| 251 | to be defined. */ |
| 252 | #if !_LIBC && !HAVE_STPCPY |
| 253 | static char * |
| 254 | stpcpy (dest, src) |
| 255 | char *dest; |
| 256 | const char *src; |
| 257 | { |
| 258 | while ((*dest++ = *src++) != '\0') |
| 259 | /* Do nothing. */ ; |
| 260 | return dest - 1; |
| 261 | } |
| 262 | #endif |