Chris Allegretta | a2ea193 | 2000-06-06 05:53:49 +0000 | [diff] [blame] | 1 | /* Implementation of the dcgettext(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 | #include <sys/types.h> |
| 23 | |
| 24 | #if defined __GNUC__ && !defined C_ALLOCA |
| 25 | # define alloca __builtin_alloca |
| 26 | # define HAVE_ALLOCA 1 |
| 27 | #else |
| 28 | # if (defined HAVE_ALLOCA_H || defined _LIBC) && !defined C_ALLOCA |
| 29 | # include <alloca.h> |
| 30 | # else |
| 31 | # ifdef _AIX |
| 32 | #pragma alloca |
| 33 | # else |
| 34 | # ifndef alloca |
| 35 | char *alloca (); |
| 36 | # endif |
| 37 | # endif |
| 38 | # endif |
| 39 | #endif |
| 40 | |
| 41 | #include <errno.h> |
| 42 | #ifndef errno |
| 43 | extern int errno; |
| 44 | #endif |
| 45 | #ifndef __set_errno |
| 46 | # define __set_errno(val) errno = (val) |
| 47 | #endif |
| 48 | |
| 49 | #if defined STDC_HEADERS || defined _LIBC |
| 50 | # include <stdlib.h> |
| 51 | #else |
| 52 | char *getenv (); |
| 53 | # ifdef HAVE_MALLOC_H |
| 54 | # include <malloc.h> |
| 55 | # else |
| 56 | void free (); |
| 57 | # endif |
| 58 | #endif |
| 59 | |
| 60 | #if defined HAVE_STRING_H || defined _LIBC |
| 61 | # ifndef _GNU_SOURCE |
| 62 | # define _GNU_SOURCE 1 |
| 63 | # endif |
| 64 | # include <string.h> |
| 65 | #else |
| 66 | # include <strings.h> |
| 67 | #endif |
| 68 | #if !HAVE_STRCHR && !defined _LIBC |
| 69 | # ifndef strchr |
| 70 | # define strchr index |
| 71 | # endif |
| 72 | #endif |
| 73 | |
| 74 | #if defined HAVE_UNISTD_H || defined _LIBC |
| 75 | # include <unistd.h> |
| 76 | #endif |
| 77 | |
| 78 | #include "gettext.h" |
| 79 | #include "gettextP.h" |
| 80 | #ifdef _LIBC |
| 81 | # include <libintl.h> |
| 82 | #else |
| 83 | # include "libgettext.h" |
| 84 | #endif |
| 85 | #include "hash-string.h" |
| 86 | |
| 87 | /* @@ end of prolog @@ */ |
| 88 | |
| 89 | #ifdef _LIBC |
| 90 | /* Rename the non ANSI C functions. This is required by the standard |
| 91 | because some ANSI C functions will require linking with this object |
| 92 | file and the name space must not be polluted. */ |
| 93 | # define getcwd __getcwd |
| 94 | # ifndef stpcpy |
| 95 | # define stpcpy __stpcpy |
| 96 | # endif |
| 97 | #else |
| 98 | # if !defined HAVE_GETCWD |
| 99 | char *getwd (); |
| 100 | # define getcwd(buf, max) getwd (buf) |
| 101 | # else |
| 102 | char *getcwd (); |
| 103 | # endif |
| 104 | # ifndef HAVE_STPCPY |
| 105 | static char *stpcpy PARAMS ((char *dest, const char *src)); |
| 106 | # endif |
| 107 | #endif |
| 108 | |
| 109 | /* Amount to increase buffer size by in each try. */ |
| 110 | #define PATH_INCR 32 |
| 111 | |
| 112 | /* The following is from pathmax.h. */ |
| 113 | /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define |
| 114 | PATH_MAX but might cause redefinition warnings when sys/param.h is |
| 115 | later included (as on MORE/BSD 4.3). */ |
| 116 | #if defined(_POSIX_VERSION) || (defined(HAVE_LIMITS_H) && !defined(__GNUC__)) |
| 117 | # include <limits.h> |
| 118 | #endif |
| 119 | |
| 120 | #ifndef _POSIX_PATH_MAX |
| 121 | # define _POSIX_PATH_MAX 255 |
| 122 | #endif |
| 123 | |
| 124 | #if !defined(PATH_MAX) && defined(_PC_PATH_MAX) |
| 125 | # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) |
| 126 | #endif |
| 127 | |
| 128 | /* Don't include sys/param.h if it already has been. */ |
| 129 | #if defined(HAVE_SYS_PARAM_H) && !defined(PATH_MAX) && !defined(MAXPATHLEN) |
| 130 | # include <sys/param.h> |
| 131 | #endif |
| 132 | |
| 133 | #if !defined(PATH_MAX) && defined(MAXPATHLEN) |
| 134 | # define PATH_MAX MAXPATHLEN |
| 135 | #endif |
| 136 | |
| 137 | #ifndef PATH_MAX |
| 138 | # define PATH_MAX _POSIX_PATH_MAX |
| 139 | #endif |
| 140 | |
| 141 | /* XPG3 defines the result of `setlocale (category, NULL)' as: |
| 142 | ``Directs `setlocale()' to query `category' and return the current |
| 143 | setting of `local'.'' |
| 144 | However it does not specify the exact format. And even worse: POSIX |
| 145 | defines this not at all. So we can use this feature only on selected |
| 146 | system (e.g. those using GNU C Library). */ |
| 147 | #ifdef _LIBC |
| 148 | # define HAVE_LOCALE_NULL |
| 149 | #endif |
| 150 | |
| 151 | /* Name of the default domain used for gettext(3) prior any call to |
| 152 | textdomain(3). The default value for this is "messages". */ |
| 153 | const char _nl_default_default_domain[] = "messages"; |
| 154 | |
| 155 | /* Value used as the default domain for gettext(3). */ |
| 156 | const char *_nl_current_default_domain = _nl_default_default_domain; |
| 157 | |
| 158 | /* Contains the default location of the message catalogs. */ |
| 159 | const char _nl_default_dirname[] = GNULOCALEDIR; |
| 160 | |
| 161 | /* List with bindings of specific domains created by bindtextdomain() |
| 162 | calls. */ |
| 163 | struct binding *_nl_domain_bindings; |
| 164 | |
| 165 | /* Prototypes for local functions. */ |
| 166 | static char *find_msg PARAMS ((struct loaded_l10nfile *domain_file, |
| 167 | const char *msgid)) internal_function; |
| 168 | static const char *category_to_name PARAMS ((int category)) internal_function; |
| 169 | static const char *guess_category_value PARAMS ((int category, |
| 170 | const char *categoryname)) |
| 171 | internal_function; |
| 172 | |
| 173 | |
| 174 | /* For those loosing systems which don't have `alloca' we have to add |
| 175 | some additional code emulating it. */ |
| 176 | #ifdef HAVE_ALLOCA |
| 177 | /* Nothing has to be done. */ |
| 178 | # define ADD_BLOCK(list, address) /* nothing */ |
| 179 | # define FREE_BLOCKS(list) /* nothing */ |
| 180 | #else |
| 181 | struct block_list |
| 182 | { |
| 183 | void *address; |
| 184 | struct block_list *next; |
| 185 | }; |
| 186 | # define ADD_BLOCK(list, addr) \ |
| 187 | do { \ |
| 188 | struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ |
| 189 | /* If we cannot get a free block we cannot add the new element to \ |
| 190 | the list. */ \ |
| 191 | if (newp != NULL) { \ |
| 192 | newp->address = (addr); \ |
| 193 | newp->next = (list); \ |
| 194 | (list) = newp; \ |
| 195 | } \ |
| 196 | } while (0) |
| 197 | # define FREE_BLOCKS(list) \ |
| 198 | do { \ |
| 199 | while (list != NULL) { \ |
| 200 | struct block_list *old = list; \ |
| 201 | list = list->next; \ |
| 202 | free (old); \ |
| 203 | } \ |
| 204 | } while (0) |
| 205 | # undef alloca |
| 206 | # define alloca(size) (malloc (size)) |
| 207 | #endif /* have alloca */ |
| 208 | |
| 209 | |
| 210 | /* Names for the libintl functions are a problem. They must not clash |
| 211 | with existing names and they should follow ANSI C. But this source |
| 212 | code is also used in GNU C Library where the names have a __ |
| 213 | prefix. So we have to make a difference here. */ |
| 214 | #ifdef _LIBC |
| 215 | # define DCGETTEXT __dcgettext |
| 216 | #else |
| 217 | # define DCGETTEXT dcgettext__ |
| 218 | #endif |
| 219 | |
| 220 | /* Checking whether the binaries runs SUID must be done and glibc provides |
| 221 | easier methods therefore we make a difference here. */ |
| 222 | #ifdef _LIBC |
| 223 | # define ENABLE_SECURE __libc_enable_secure |
| 224 | # define DETERMINE_SECURE |
| 225 | #else |
| 226 | static int enable_secure; |
| 227 | # define ENABLE_SECURE (enable_secure == 1) |
| 228 | # define DETERMINE_SECURE \ |
| 229 | if (enable_secure == 0) \ |
| 230 | { \ |
| 231 | if (getuid () != geteuid () || getgid () != getegid ()) \ |
| 232 | enable_secure = 1; \ |
| 233 | else \ |
| 234 | enable_secure = -1; \ |
| 235 | } |
| 236 | #endif |
| 237 | |
| 238 | /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY |
| 239 | locale. */ |
| 240 | char * |
| 241 | DCGETTEXT (domainname, msgid, category) |
| 242 | const char *domainname; |
| 243 | const char *msgid; |
| 244 | int category; |
| 245 | { |
| 246 | #ifndef HAVE_ALLOCA |
| 247 | struct block_list *block_list = NULL; |
| 248 | #endif |
| 249 | struct loaded_l10nfile *domain; |
| 250 | struct binding *binding; |
| 251 | const char *categoryname; |
| 252 | const char *categoryvalue; |
| 253 | char *dirname, *xdomainname; |
| 254 | char *single_locale; |
| 255 | char *retval; |
| 256 | int saved_errno = errno; |
| 257 | |
| 258 | /* If no real MSGID is given return NULL. */ |
| 259 | if (msgid == NULL) |
| 260 | return NULL; |
| 261 | |
| 262 | /* See whether this is a SUID binary or not. */ |
| 263 | DETERMINE_SECURE; |
| 264 | |
| 265 | /* If DOMAINNAME is NULL, we are interested in the default domain. If |
| 266 | CATEGORY is not LC_MESSAGES this might not make much sense but the |
| 267 | definition left this undefined. */ |
| 268 | if (domainname == NULL) |
| 269 | domainname = _nl_current_default_domain; |
| 270 | |
| 271 | /* First find matching binding. */ |
| 272 | for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) |
| 273 | { |
| 274 | int compare = strcmp (domainname, binding->domainname); |
| 275 | if (compare == 0) |
| 276 | /* We found it! */ |
| 277 | break; |
| 278 | if (compare < 0) |
| 279 | { |
| 280 | /* It is not in the list. */ |
| 281 | binding = NULL; |
| 282 | break; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if (binding == NULL) |
| 287 | dirname = (char *) _nl_default_dirname; |
| 288 | else if (binding->dirname[0] == '/') |
| 289 | dirname = binding->dirname; |
| 290 | else |
| 291 | { |
| 292 | /* We have a relative path. Make it absolute now. */ |
| 293 | size_t dirname_len = strlen (binding->dirname) + 1; |
| 294 | size_t path_max; |
| 295 | char *ret; |
| 296 | |
| 297 | path_max = (unsigned int) PATH_MAX; |
| 298 | path_max += 2; /* The getcwd docs say to do this. */ |
| 299 | |
| 300 | dirname = (char *) alloca (path_max + dirname_len); |
| 301 | ADD_BLOCK (block_list, dirname); |
| 302 | |
| 303 | __set_errno (0); |
| 304 | while ((ret = getcwd (dirname, path_max)) == NULL && errno == ERANGE) |
| 305 | { |
| 306 | path_max += PATH_INCR; |
| 307 | dirname = (char *) alloca (path_max + dirname_len); |
| 308 | ADD_BLOCK (block_list, dirname); |
| 309 | __set_errno (0); |
| 310 | } |
| 311 | |
| 312 | if (ret == NULL) |
| 313 | { |
| 314 | /* We cannot get the current working directory. Don't signal an |
| 315 | error but simply return the default string. */ |
| 316 | FREE_BLOCKS (block_list); |
| 317 | __set_errno (saved_errno); |
| 318 | return (char *) msgid; |
| 319 | } |
| 320 | |
| 321 | stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); |
| 322 | } |
| 323 | |
| 324 | /* Now determine the symbolic name of CATEGORY and its value. */ |
| 325 | categoryname = category_to_name (category); |
| 326 | categoryvalue = guess_category_value (category, categoryname); |
| 327 | |
| 328 | xdomainname = (char *) alloca (strlen (categoryname) |
| 329 | + strlen (domainname) + 5); |
| 330 | ADD_BLOCK (block_list, xdomainname); |
| 331 | |
| 332 | stpcpy (stpcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), |
| 333 | domainname), |
| 334 | ".mo"); |
| 335 | |
| 336 | /* Creating working area. */ |
| 337 | single_locale = (char *) alloca (strlen (categoryvalue) + 1); |
| 338 | ADD_BLOCK (block_list, single_locale); |
| 339 | |
| 340 | |
| 341 | /* Search for the given string. This is a loop because we perhaps |
| 342 | got an ordered list of languages to consider for the translation. */ |
| 343 | while (1) |
| 344 | { |
| 345 | /* Make CATEGORYVALUE point to the next element of the list. */ |
| 346 | while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') |
| 347 | ++categoryvalue; |
| 348 | if (categoryvalue[0] == '\0') |
| 349 | { |
| 350 | /* The whole contents of CATEGORYVALUE has been searched but |
| 351 | no valid entry has been found. We solve this situation |
| 352 | by implicitly appending a "C" entry, i.e. no translation |
| 353 | will take place. */ |
| 354 | single_locale[0] = 'C'; |
| 355 | single_locale[1] = '\0'; |
| 356 | } |
| 357 | else |
| 358 | { |
| 359 | char *cp = single_locale; |
| 360 | while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') |
| 361 | *cp++ = *categoryvalue++; |
| 362 | *cp = '\0'; |
| 363 | |
| 364 | /* When this is a SUID binary we must not allow accessing files |
| 365 | outside the dedicated directories. */ |
| 366 | if (ENABLE_SECURE |
| 367 | && (memchr (single_locale, '/', |
| 368 | _nl_find_language (single_locale) - single_locale) |
| 369 | != NULL)) |
| 370 | /* Ingore this entry. */ |
| 371 | continue; |
| 372 | } |
| 373 | |
| 374 | /* If the current locale value is C (or POSIX) we don't load a |
| 375 | domain. Return the MSGID. */ |
| 376 | if (strcmp (single_locale, "C") == 0 |
| 377 | || strcmp (single_locale, "POSIX") == 0) |
| 378 | { |
| 379 | FREE_BLOCKS (block_list); |
| 380 | __set_errno (saved_errno); |
| 381 | return (char *) msgid; |
| 382 | } |
| 383 | |
| 384 | |
| 385 | /* Find structure describing the message catalog matching the |
| 386 | DOMAINNAME and CATEGORY. */ |
| 387 | domain = _nl_find_domain (dirname, single_locale, xdomainname); |
| 388 | |
| 389 | if (domain != NULL) |
| 390 | { |
| 391 | retval = find_msg (domain, msgid); |
| 392 | |
| 393 | if (retval == NULL) |
| 394 | { |
| 395 | int cnt; |
| 396 | |
| 397 | for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) |
| 398 | { |
| 399 | retval = find_msg (domain->successor[cnt], msgid); |
| 400 | |
| 401 | if (retval != NULL) |
| 402 | break; |
| 403 | } |
| 404 | } |
| 405 | |
| 406 | if (retval != NULL) |
| 407 | { |
| 408 | FREE_BLOCKS (block_list); |
| 409 | __set_errno (saved_errno); |
| 410 | return retval; |
| 411 | } |
| 412 | } |
| 413 | } |
| 414 | /* NOTREACHED */ |
| 415 | } |
| 416 | |
| 417 | #ifdef _LIBC |
| 418 | /* Alias for function name in GNU C Library. */ |
| 419 | weak_alias (__dcgettext, dcgettext); |
| 420 | #endif |
| 421 | |
| 422 | |
| 423 | static char * |
| 424 | internal_function |
| 425 | find_msg (domain_file, msgid) |
| 426 | struct loaded_l10nfile *domain_file; |
| 427 | const char *msgid; |
| 428 | { |
| 429 | size_t act = 0; |
| 430 | size_t top, bottom; |
| 431 | struct loaded_domain *domain; |
| 432 | |
| 433 | if (domain_file->decided == 0) |
| 434 | _nl_load_domain (domain_file); |
| 435 | |
| 436 | if (domain_file->data == NULL) |
| 437 | return NULL; |
| 438 | |
| 439 | domain = (struct loaded_domain *) domain_file->data; |
| 440 | |
| 441 | /* Locate the MSGID and its translation. */ |
| 442 | if (domain->hash_size > 2 && domain->hash_tab != NULL) |
| 443 | { |
| 444 | /* Use the hashing table. */ |
| 445 | nls_uint32 len = strlen (msgid); |
| 446 | nls_uint32 hash_val = hash_string (msgid); |
| 447 | nls_uint32 idx = hash_val % domain->hash_size; |
| 448 | nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); |
| 449 | nls_uint32 nstr = W (domain->must_swap, domain->hash_tab[idx]); |
| 450 | |
| 451 | if (nstr == 0) |
| 452 | /* Hash table entry is empty. */ |
| 453 | return NULL; |
| 454 | |
| 455 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len |
| 456 | && strcmp (msgid, |
| 457 | domain->data + W (domain->must_swap, |
| 458 | domain->orig_tab[nstr - 1].offset)) == 0) |
| 459 | return (char *) domain->data + W (domain->must_swap, |
| 460 | domain->trans_tab[nstr - 1].offset); |
| 461 | |
| 462 | while (1) |
| 463 | { |
| 464 | if (idx >= domain->hash_size - incr) |
| 465 | idx -= domain->hash_size - incr; |
| 466 | else |
| 467 | idx += incr; |
| 468 | |
| 469 | nstr = W (domain->must_swap, domain->hash_tab[idx]); |
| 470 | if (nstr == 0) |
| 471 | /* Hash table entry is empty. */ |
| 472 | return NULL; |
| 473 | |
| 474 | if (W (domain->must_swap, domain->orig_tab[nstr - 1].length) == len |
| 475 | && strcmp (msgid, |
| 476 | domain->data + W (domain->must_swap, |
| 477 | domain->orig_tab[nstr - 1].offset)) |
| 478 | == 0) |
| 479 | return (char *) domain->data |
| 480 | + W (domain->must_swap, domain->trans_tab[nstr - 1].offset); |
| 481 | } |
| 482 | /* NOTREACHED */ |
| 483 | } |
| 484 | |
| 485 | /* Now we try the default method: binary search in the sorted |
| 486 | array of messages. */ |
| 487 | bottom = 0; |
| 488 | top = domain->nstrings; |
| 489 | while (bottom < top) |
| 490 | { |
| 491 | int cmp_val; |
| 492 | |
| 493 | act = (bottom + top) / 2; |
| 494 | cmp_val = strcmp (msgid, domain->data |
| 495 | + W (domain->must_swap, |
| 496 | domain->orig_tab[act].offset)); |
| 497 | if (cmp_val < 0) |
| 498 | top = act; |
| 499 | else if (cmp_val > 0) |
| 500 | bottom = act + 1; |
| 501 | else |
| 502 | break; |
| 503 | } |
| 504 | |
| 505 | /* If an translation is found return this. */ |
| 506 | return bottom >= top ? NULL : (char *) domain->data |
| 507 | + W (domain->must_swap, |
| 508 | domain->trans_tab[act].offset); |
| 509 | } |
| 510 | |
| 511 | |
| 512 | /* Return string representation of locale CATEGORY. */ |
| 513 | static const char * |
| 514 | internal_function |
| 515 | category_to_name (category) |
| 516 | int category; |
| 517 | { |
| 518 | const char *retval; |
| 519 | |
| 520 | switch (category) |
| 521 | { |
| 522 | #ifdef LC_COLLATE |
| 523 | case LC_COLLATE: |
| 524 | retval = "LC_COLLATE"; |
| 525 | break; |
| 526 | #endif |
| 527 | #ifdef LC_CTYPE |
| 528 | case LC_CTYPE: |
| 529 | retval = "LC_CTYPE"; |
| 530 | break; |
| 531 | #endif |
| 532 | #ifdef LC_MONETARY |
| 533 | case LC_MONETARY: |
| 534 | retval = "LC_MONETARY"; |
| 535 | break; |
| 536 | #endif |
| 537 | #ifdef LC_NUMERIC |
| 538 | case LC_NUMERIC: |
| 539 | retval = "LC_NUMERIC"; |
| 540 | break; |
| 541 | #endif |
| 542 | #ifdef LC_TIME |
| 543 | case LC_TIME: |
| 544 | retval = "LC_TIME"; |
| 545 | break; |
| 546 | #endif |
| 547 | #ifdef LC_MESSAGES |
| 548 | case LC_MESSAGES: |
| 549 | retval = "LC_MESSAGES"; |
| 550 | break; |
| 551 | #endif |
| 552 | #ifdef LC_RESPONSE |
| 553 | case LC_RESPONSE: |
| 554 | retval = "LC_RESPONSE"; |
| 555 | break; |
| 556 | #endif |
| 557 | #ifdef LC_ALL |
| 558 | case LC_ALL: |
| 559 | /* This might not make sense but is perhaps better than any other |
| 560 | value. */ |
| 561 | retval = "LC_ALL"; |
| 562 | break; |
| 563 | #endif |
| 564 | default: |
| 565 | /* If you have a better idea for a default value let me know. */ |
| 566 | retval = "LC_XXX"; |
| 567 | } |
| 568 | |
| 569 | return retval; |
| 570 | } |
| 571 | |
| 572 | /* Guess value of current locale from value of the environment variables. */ |
| 573 | static const char * |
| 574 | internal_function |
| 575 | guess_category_value (category, categoryname) |
| 576 | int category; |
| 577 | const char *categoryname; |
| 578 | { |
| 579 | const char *retval; |
| 580 | |
| 581 | /* The highest priority value is the `LANGUAGE' environment |
| 582 | variable. This is a GNU extension. */ |
| 583 | retval = getenv ("LANGUAGE"); |
| 584 | if (retval != NULL && retval[0] != '\0') |
| 585 | return retval; |
| 586 | |
| 587 | /* `LANGUAGE' is not set. So we have to proceed with the POSIX |
| 588 | methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some |
| 589 | systems this can be done by the `setlocale' function itself. */ |
| 590 | #if defined HAVE_SETLOCALE && defined HAVE_LC_MESSAGES && defined HAVE_LOCALE_NULL |
| 591 | return setlocale (category, NULL); |
| 592 | #else |
| 593 | /* Setting of LC_ALL overwrites all other. */ |
| 594 | retval = getenv ("LC_ALL"); |
| 595 | if (retval != NULL && retval[0] != '\0') |
| 596 | return retval; |
| 597 | |
| 598 | /* Next comes the name of the desired category. */ |
| 599 | retval = getenv (categoryname); |
| 600 | if (retval != NULL && retval[0] != '\0') |
| 601 | return retval; |
| 602 | |
| 603 | /* Last possibility is the LANG environment variable. */ |
| 604 | retval = getenv ("LANG"); |
| 605 | if (retval != NULL && retval[0] != '\0') |
| 606 | return retval; |
| 607 | |
| 608 | /* We use C as the default domain. POSIX says this is implementation |
| 609 | defined. */ |
| 610 | return "C"; |
| 611 | #endif |
| 612 | } |
| 613 | |
| 614 | /* @@ begin of epilog @@ */ |
| 615 | |
| 616 | /* We don't want libintl.a to depend on any other library. So we |
| 617 | avoid the non-standard function stpcpy. In GNU C Library this |
| 618 | function is available, though. Also allow the symbol HAVE_STPCPY |
| 619 | to be defined. */ |
| 620 | #if !_LIBC && !HAVE_STPCPY |
| 621 | static char * |
| 622 | stpcpy (dest, src) |
| 623 | char *dest; |
| 624 | const char *src; |
| 625 | { |
| 626 | while ((*dest++ = *src++) != '\0') |
| 627 | /* Do nothing. */ ; |
| 628 | return dest - 1; |
| 629 | } |
| 630 | #endif |
| 631 | |
| 632 | |
| 633 | #ifdef _LIBC |
| 634 | /* If we want to free all resources we have to do some work at |
| 635 | program's end. */ |
| 636 | static void __attribute__ ((unused)) |
| 637 | free_mem (void) |
| 638 | { |
| 639 | struct binding *runp; |
| 640 | |
| 641 | for (runp = _nl_domain_bindings; runp != NULL; runp = runp->next) |
| 642 | { |
| 643 | free (runp->domainname); |
| 644 | if (runp->dirname != _nl_default_dirname) |
| 645 | /* Yes, this is a pointer comparison. */ |
| 646 | free (runp->dirname); |
| 647 | } |
| 648 | |
| 649 | if (_nl_current_default_domain != _nl_default_default_domain) |
| 650 | /* Yes, again a pointer comparison. */ |
| 651 | free ((char *) _nl_current_default_domain); |
| 652 | } |
| 653 | |
| 654 | text_set_element (__libc_subfreeres, free_mem); |
| 655 | #endif |