1 /* Implementation of the internal dcigettext function. 2 Copyright (C) 1995-1999, 2000-2003 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify it 5 under the terms of the GNU Library General Public License as published 6 by 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 GNU 12 Library General Public License for more details. 13 14 You should have received a copy of the GNU Library General Public 15 License along with this program; if not, write to the Free Software 16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 17 USA. */ 18 19 /* Tell glibc's <string.h> to provide a prototype for mempcpy(). 20 This must come before <config.h> because <config.h> may include 21 <features.h>, and once <features.h> has been included, it's too late. */ 22 #ifndef _GNU_SOURCE 23 # define _GNU_SOURCE 1 24 #endif 25 26 #ifdef HAVE_CONFIG_H 27 # include <config.h> 28 #endif 29 30 #include <sys/types.h> 31 32 #ifdef __GNUC__ 33 # define alloca __builtin_alloca 34 # define HAVE_ALLOCA 1 35 #else 36 # ifdef _MSC_VER 37 # include <malloc.h> 38 # define alloca _alloca 39 # else 40 # if defined HAVE_ALLOCA_H || defined _LIBC 41 # include <alloca.h> 42 # else 43 # ifdef _AIX 44 #pragma alloca 45 # else 46 # ifndef alloca 47 char *alloca (); 48 # endif 49 # endif 50 # endif 51 # endif 52 #endif 53 54 #include <errno.h> 55 #ifndef errno 56 extern int errno; 57 #endif 58 #ifndef __set_errno 59 # define __set_errno(val) errno = (val) 60 #endif 61 62 #include <stddef.h> 63 #include <stdlib.h> 64 #include <string.h> 65 66 #if defined HAVE_UNISTD_H || defined _LIBC 67 # include <unistd.h> 68 #endif 69 70 #include <locale.h> 71 72 #ifdef _LIBC 73 /* Guess whether integer division by zero raises signal SIGFPE. 74 Set to 1 only if you know for sure. In case of doubt, set to 0. */ 75 # if defined __alpha__ || defined __arm__ || defined __i386__ \ 76 || defined __m68k__ || defined __s390__ 77 # define INTDIV0_RAISES_SIGFPE 1 78 # else 79 # define INTDIV0_RAISES_SIGFPE 0 80 # endif 81 #endif 82 #if !INTDIV0_RAISES_SIGFPE 83 # include <signal.h> 84 #endif 85 86 #if defined HAVE_SYS_PARAM_H || defined _LIBC 87 # include <sys/param.h> 88 #endif 89 90 #include "gettextP.h" 91 #include "plural-exp.h" 92 #ifdef _LIBC 93 # include <libintl.h> 94 #else 95 # include "libgnuintl.h" 96 #endif 97 #include "hash-string.h" 98 99 /* Thread safetyness. */ 100 #ifdef _LIBC 101 # include <bits/libc-lock.h> 102 #else 103 /* Provide dummy implementation if this is outside glibc. */ 104 # define __libc_lock_define_initialized(CLASS, NAME) 105 # define __libc_lock_lock(NAME) 106 # define __libc_lock_unlock(NAME) 107 # define __libc_rwlock_define_initialized(CLASS, NAME) 108 # define __libc_rwlock_rdlock(NAME) 109 # define __libc_rwlock_unlock(NAME) 110 #endif 111 112 /* Alignment of types. */ 113 #if defined __GNUC__ && __GNUC__ >= 2 114 # define alignof(TYPE) __alignof__ (TYPE) 115 #else 116 # define alignof(TYPE) \ 117 ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2) 118 #endif 119 120 /* The internal variables in the standalone libintl.a must have different 121 names than the internal variables in GNU libc, otherwise programs 122 using libintl.a cannot be linked statically. */ 123 #if !defined _LIBC 124 # define _nl_default_default_domain libintl_nl_default_default_domain 125 # define _nl_current_default_domain libintl_nl_current_default_domain 126 # define _nl_default_dirname libintl_nl_default_dirname 127 # define _nl_domain_bindings libintl_nl_domain_bindings 128 #endif 129 130 /* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */ 131 #ifndef offsetof 132 # define offsetof(type,ident) ((size_t)&(((type*)0)->ident)) 133 #endif 134 135 /* @@ end of prolog @@ */ 136 137 #ifdef _LIBC 138 /* Rename the non ANSI C functions. This is required by the standard 139 because some ANSI C functions will require linking with this object 140 file and the name space must not be polluted. */ 141 # define getcwd __getcwd 142 # ifndef stpcpy 143 # define stpcpy __stpcpy 144 # endif 145 # define tfind __tfind 146 #else 147 # if !defined HAVE_GETCWD 148 char *getwd (); 149 # define getcwd(buf, max) getwd (buf) 150 # else 151 # if VMS 152 # define getcwd(buf, max) (getcwd) (buf, max, 0) 153 # else 154 char *getcwd (); 155 # endif 156 # endif 157 # ifndef HAVE_STPCPY 158 static char *stpcpy (char *dest, const char *src); 159 # endif 160 # ifndef HAVE_MEMPCPY 161 static void *mempcpy (void *dest, const void *src, size_t n); 162 # endif 163 #endif 164 165 /* Amount to increase buffer size by in each try. */ 166 #define PATH_INCR 32 167 168 /* The following is from pathmax.h. */ 169 /* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define 170 PATH_MAX but might cause redefinition warnings when sys/param.h is 171 later included (as on MORE/BSD 4.3). */ 172 #if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__) 173 # include <limits.h> 174 #endif 175 176 #ifndef _POSIX_PATH_MAX 177 # define _POSIX_PATH_MAX 255 178 #endif 179 180 #if !defined PATH_MAX && defined _PC_PATH_MAX 181 # define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) 182 #endif 183 184 /* Don't include sys/param.h if it already has been. */ 185 #if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN 186 # include <sys/param.h> 187 #endif 188 189 #if !defined PATH_MAX && defined MAXPATHLEN 190 # define PATH_MAX MAXPATHLEN 191 #endif 192 193 #ifndef PATH_MAX 194 # define PATH_MAX _POSIX_PATH_MAX 195 #endif 196 197 /* Pathname support. 198 ISSLASH(C) tests whether C is a directory separator character. 199 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not, 200 it may be concatenated to a directory pathname. 201 IS_PATH_WITH_DIR(P) tests whether P contains a directory specification. 202 */ 203 #if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__ 204 /* Win32, OS/2, DOS */ 205 # define ISSLASH(C) ((C) == '/' || (C) == '\\') 206 # define HAS_DEVICE(P) \ 207 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \ 208 && (P)[1] == ':') 209 # define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P)) 210 # define IS_PATH_WITH_DIR(P) \ 211 (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P)) 212 #else 213 /* Unix */ 214 # define ISSLASH(C) ((C) == '/') 215 # define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0]) 216 # define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL) 217 #endif 218 219 /* This is the type used for the search tree where known translations 220 are stored. */ 221 struct known_translation_t 222 { 223 /* Domain in which to search. */ 224 char *domainname; 225 226 /* The category. */ 227 int category; 228 229 /* State of the catalog counter at the point the string was found. */ 230 int counter; 231 232 /* Catalog where the string was found. */ 233 struct loaded_l10nfile *domain; 234 235 /* And finally the translation. */ 236 const char *translation; 237 size_t translation_length; 238 239 /* Pointer to the string in question. */ 240 char msgid[ZERO]; 241 }; 242 243 /* Root of the search tree with known translations. We can use this 244 only if the system provides the `tsearch' function family. */ 245 #if defined HAVE_TSEARCH || defined _LIBC 246 # include <search.h> 247 248 static void *root; 249 250 # ifdef _LIBC 251 # define tsearch __tsearch 252 # endif 253 254 /* Function to compare two entries in the table of known translations. */ 255 static int 256 transcmp (const void *p1, const void *p2) 257 { 258 const struct known_translation_t *s1; 259 const struct known_translation_t *s2; 260 int result; 261 262 s1 = (const struct known_translation_t *) p1; 263 s2 = (const struct known_translation_t *) p2; 264 265 result = strcmp (s1->msgid, s2->msgid); 266 if (result == 0) 267 { 268 result = strcmp (s1->domainname, s2->domainname); 269 if (result == 0) 270 /* We compare the category last (though this is the cheapest 271 operation) since it is hopefully always the same (namely 272 LC_MESSAGES). */ 273 result = s1->category - s2->category; 274 } 275 276 return result; 277 } 278 #endif 279 280 #ifndef INTVARDEF 281 # define INTVARDEF(name) 282 #endif 283 #ifndef INTUSE 284 # define INTUSE(name) name 285 #endif 286 287 /* Name of the default domain used for gettext(3) prior any call to 288 textdomain(3). The default value for this is "messages". */ 289 const char _nl_default_default_domain[] attribute_hidden = "messages"; 290 291 /* Value used as the default domain for gettext(3). */ 292 const char *_nl_current_default_domain attribute_hidden 293 = _nl_default_default_domain; 294 295 /* Contains the default location of the message catalogs. */ 296 #if defined __EMX__ 297 extern const char _nl_default_dirname[]; 298 #else 299 const char _nl_default_dirname[] = LOCALEDIR; 300 INTVARDEF (_nl_default_dirname) 301 #endif 302 303 /* List with bindings of specific domains created by bindtextdomain() 304 calls. */ 305 struct binding *_nl_domain_bindings; 306 307 /* Prototypes for local functions. */ 308 static char *plural_lookup (struct loaded_l10nfile *domain, 309 unsigned long int n, 310 const char *translation, size_t translation_len) 311 internal_function; 312 static const char *guess_category_value (int category, 313 const char *categoryname) 314 internal_function; 315 #ifdef _LIBC 316 # include "../locale/localeinfo.h" 317 # define category_to_name(category) _nl_category_names[category] 318 #else 319 static const char *category_to_name (int category) internal_function; 320 #endif 321 322 323 /* For those loosing systems which don't have `alloca' we have to add 324 some additional code emulating it. */ 325 #ifdef HAVE_ALLOCA 326 /* Nothing has to be done. */ 327 # define freea(p) /* nothing */ 328 # define ADD_BLOCK(list, address) /* nothing */ 329 # define FREE_BLOCKS(list) /* nothing */ 330 #else 331 struct block_list 332 { 333 void *address; 334 struct block_list *next; 335 }; 336 # define ADD_BLOCK(list, addr) \ 337 do { \ 338 struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ 339 /* If we cannot get a free block we cannot add the new element to \ 340 the list. */ \ 341 if (newp != NULL) { \ 342 newp->address = (addr); \ 343 newp->next = (list); \ 344 (list) = newp; \ 345 } \ 346 } while (0) 347 # define FREE_BLOCKS(list) \ 348 do { \ 349 while (list != NULL) { \ 350 struct block_list *old = list; \ 351 list = list->next; \ 352 free (old->address); \ 353 free (old); \ 354 } \ 355 } while (0) 356 # undef alloca 357 # define alloca(size) (malloc (size)) 358 # define freea(p) free (p) 359 #endif /* have alloca */ 360 361 362 #ifdef _LIBC 363 /* List of blocks allocated for translations. */ 364 typedef struct transmem_list 365 { 366 struct transmem_list *next; 367 char data[ZERO]; 368 } transmem_block_t; 369 static struct transmem_list *transmem_list; 370 #else 371 typedef unsigned char transmem_block_t; 372 #endif 373 374 375 /* Names for the libintl functions are a problem. They must not clash 376 with existing names and they should follow ANSI C. But this source 377 code is also used in GNU C Library where the names have a __ 378 prefix. So we have to make a difference here. */ 379 #ifdef _LIBC 380 # define DCIGETTEXT __dcigettext 381 #else 382 # define DCIGETTEXT libintl_dcigettext 383 #endif 384 385 /* Lock variable to protect the global data in the gettext implementation. */ 386 #ifdef _LIBC 387 __libc_rwlock_define_initialized (, _nl_state_lock attribute_hidden) 388 #endif 389 390 /* Checking whether the binaries runs SUID must be done and glibc provides 391 easier methods therefore we make a difference here. */ 392 #ifdef _LIBC 393 # define ENABLE_SECURE __libc_enable_secure 394 # define DETERMINE_SECURE 395 #else 396 # ifndef HAVE_GETUID 397 # define getuid() 0 398 # endif 399 # ifndef HAVE_GETGID 400 # define getgid() 0 401 # endif 402 # ifndef HAVE_GETEUID 403 # define geteuid() getuid() 404 # endif 405 # ifndef HAVE_GETEGID 406 # define getegid() getgid() 407 # endif 408 static int enable_secure; 409 # define ENABLE_SECURE (enable_secure == 1) 410 # define DETERMINE_SECURE \ 411 if (enable_secure == 0) \ 412 { \ 413 if (getuid () != geteuid () || getgid () != getegid ()) \ 414 enable_secure = 1; \ 415 else \ 416 enable_secure = -1; \ 417 } 418 #endif 419 420 /* Get the function to evaluate the plural expression. */ 421 #include "eval-plural.h" 422 423 /* Look up MSGID in the DOMAINNAME message catalog for the current 424 CATEGORY locale and, if PLURAL is nonzero, search over string 425 depending on the plural form determined by N. */ 426 char * 427 DCIGETTEXT (const char *domainname, const char *msgid1, const char *msgid2, 428 int plural, unsigned long int n, int category) 429 { 430 #ifndef HAVE_ALLOCA 431 struct block_list *block_list = NULL; 432 #endif 433 struct loaded_l10nfile *domain; 434 struct binding *binding; 435 const char *categoryname; 436 const char *categoryvalue; 437 char *dirname, *xdomainname; 438 char *single_locale; 439 char *retval; 440 size_t retlen; 441 int saved_errno; 442 #if defined HAVE_TSEARCH || defined _LIBC 443 struct known_translation_t *search; 444 struct known_translation_t **foundp = NULL; 445 size_t msgid_len; 446 #endif 447 size_t domainname_len; 448 449 /* If no real MSGID is given return NULL. */ 450 if (msgid1 == NULL) 451 return NULL; 452 453 #ifdef _LIBC 454 if (category < 0 || category >= __LC_LAST || category == LC_ALL) 455 /* Bogus. */ 456 return (plural == 0 457 ? (char *) msgid1 458 /* Use the Germanic plural rule. */ 459 : n == 1 ? (char *) msgid1 : (char *) msgid2); 460 #endif 461 462 __libc_rwlock_rdlock (_nl_state_lock); 463 464 /* If DOMAINNAME is NULL, we are interested in the default domain. If 465 CATEGORY is not LC_MESSAGES this might not make much sense but the 466 definition left this undefined. */ 467 if (domainname == NULL) 468 domainname = _nl_current_default_domain; 469 470 /* OS/2 specific: backward compatibility with older libintl versions */ 471 #ifdef LC_MESSAGES_COMPAT 472 if (category == LC_MESSAGES_COMPAT) 473 category = LC_MESSAGES; 474 #endif 475 476 #if defined HAVE_TSEARCH || defined _LIBC 477 msgid_len = strlen (msgid1) + 1; 478 479 /* Try to find the translation among those which we found at 480 some time. */ 481 search = (struct known_translation_t *) 482 alloca (offsetof (struct known_translation_t, msgid) + msgid_len); 483 memcpy (search->msgid, msgid1, msgid_len); 484 search->domainname = (char *) domainname; 485 search->category = category; 486 487 foundp = (struct known_translation_t **) tfind (search, &root, transcmp); 488 freea (search); 489 if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr) 490 { 491 /* Now deal with plural. */ 492 if (plural) 493 retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation, 494 (*foundp)->translation_length); 495 else 496 retval = (char *) (*foundp)->translation; 497 498 __libc_rwlock_unlock (_nl_state_lock); 499 return retval; 500 } 501 #endif 502 503 /* Preserve the `errno' value. */ 504 saved_errno = errno; 505 506 /* See whether this is a SUID binary or not. */ 507 DETERMINE_SECURE; 508 509 /* First find matching binding. */ 510 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) 511 { 512 int compare = strcmp (domainname, binding->domainname); 513 if (compare == 0) 514 /* We found it! */ 515 break; 516 if (compare < 0) 517 { 518 /* It is not in the list. */ 519 binding = NULL; 520 break; 521 } 522 } 523 524 if (binding == NULL) 525 dirname = (char *) INTUSE(_nl_default_dirname); 526 else if (IS_ABSOLUTE_PATH (binding->dirname)) 527 dirname = binding->dirname; 528 else 529 { 530 /* We have a relative path. Make it absolute now. */ 531 size_t dirname_len = strlen (binding->dirname) + 1; 532 size_t path_max; 533 char *ret; 534 535 path_max = (unsigned int) PATH_MAX; 536 path_max += 2; /* The getcwd docs say to do this. */ 537 538 for (;;) 539 { 540 dirname = (char *) alloca (path_max + dirname_len); 541 ADD_BLOCK (block_list, dirname); 542 543 __set_errno (0); 544 ret = getcwd (dirname, path_max); 545 if (ret != NULL || errno != ERANGE) 546 break; 547 548 path_max += path_max / 2; 549 path_max += PATH_INCR; 550 } 551 552 if (ret == NULL) 553 /* We cannot get the current working directory. Don't signal an 554 error but simply return the default string. */ 555 goto return_untranslated; 556 557 stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); 558 } 559 560 /* Now determine the symbolic name of CATEGORY and its value. */ 561 categoryname = category_to_name (category); 562 categoryvalue = guess_category_value (category, categoryname); 563 564 domainname_len = strlen (domainname); 565 xdomainname = (char *) alloca (strlen (categoryname) 566 + domainname_len + 5); 567 ADD_BLOCK (block_list, xdomainname); 568 569 stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), 570 domainname, domainname_len), 571 ".mo"); 572 573 /* Creating working area. */ 574 single_locale = (char *) alloca (strlen (categoryvalue) + 1); 575 ADD_BLOCK (block_list, single_locale); 576 577 578 /* Search for the given string. This is a loop because we perhaps 579 got an ordered list of languages to consider for the translation. */ 580 while (1) 581 { 582 /* Make CATEGORYVALUE point to the next element of the list. */ 583 while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') 584 ++categoryvalue; 585 if (categoryvalue[0] == '\0') 586 { 587 /* The whole contents of CATEGORYVALUE has been searched but 588 no valid entry has been found. We solve this situation 589 by implicitly appending a "C" entry, i.e. no translation 590 will take place. */ 591 single_locale[0] = 'C'; 592 single_locale[1] = '\0'; 593 } 594 else 595 { 596 char *cp = single_locale; 597 while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') 598 *cp++ = *categoryvalue++; 599 *cp = '\0'; 600 601 /* When this is a SUID binary we must not allow accessing files 602 outside the dedicated directories. */ 603 if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale)) 604 /* Ingore this entry. */ 605 continue; 606 } 607 608 /* If the current locale value is C (or POSIX) we don't load a 609 domain. Return the MSGID. */ 610 if (strcmp (single_locale, "C") == 0 611 || strcmp (single_locale, "POSIX") == 0) 612 break; 613 614 /* Find structure describing the message catalog matching the 615 DOMAINNAME and CATEGORY. */ 616 domain = _nl_find_domain (dirname, single_locale, xdomainname, binding); 617 618 if (domain != NULL) 619 { 620 retval = _nl_find_msg (domain, binding, msgid1, &retlen); 621 622 if (retval == NULL) 623 { 624 int cnt; 625 626 for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) 627 { 628 retval = _nl_find_msg (domain->successor[cnt], binding, 629 msgid1, &retlen); 630 631 if (retval != NULL) 632 { 633 domain = domain->successor[cnt]; 634 break; 635 } 636 } 637 } 638 639 if (retval != NULL) 640 { 641 /* Found the translation of MSGID1 in domain DOMAIN: 642 starting at RETVAL, RETLEN bytes. */ 643 FREE_BLOCKS (block_list); 644 #if defined HAVE_TSEARCH || defined _LIBC 645 if (foundp == NULL) 646 { 647 /* Create a new entry and add it to the search tree. */ 648 struct known_translation_t *newp; 649 650 newp = (struct known_translation_t *) 651 malloc (offsetof (struct known_translation_t, msgid) 652 + msgid_len + domainname_len + 1); 653 if (newp != NULL) 654 { 655 newp->domainname = 656 mempcpy (newp->msgid, msgid1, msgid_len); 657 memcpy (newp->domainname, domainname, domainname_len + 1); 658 newp->category = category; 659 newp->counter = _nl_msg_cat_cntr; 660 newp->domain = domain; 661 newp->translation = retval; 662 newp->translation_length = retlen; 663 664 /* Insert the entry in the search tree. */ 665 foundp = (struct known_translation_t **) 666 tsearch (newp, &root, transcmp); 667 if (foundp == NULL 668 || __builtin_expect (*foundp != newp, 0)) 669 /* The insert failed. */ 670 free (newp); 671 } 672 } 673 else 674 { 675 /* We can update the existing entry. */ 676 (*foundp)->counter = _nl_msg_cat_cntr; 677 (*foundp)->domain = domain; 678 (*foundp)->translation = retval; 679 (*foundp)->translation_length = retlen; 680 } 681 #endif 682 __set_errno (saved_errno); 683 684 /* Now deal with plural. */ 685 if (plural) 686 retval = plural_lookup (domain, n, retval, retlen); 687 688 __libc_rwlock_unlock (_nl_state_lock); 689 return retval; 690 } 691 } 692 } 693 694 return_untranslated: 695 /* Return the untranslated MSGID. */ 696 FREE_BLOCKS (block_list); 697 __libc_rwlock_unlock (_nl_state_lock); 698 #ifndef _LIBC 699 if (!ENABLE_SECURE) 700 { 701 extern void _nl_log_untranslated (const char *logfilename, 702 const char *domainname, 703 const char *msgid1, const char *msgid2, 704 int plural); 705 const char *logfilename = getenv ("GETTEXT_LOG_UNTRANSLATED"); 706 707 if (logfilename != NULL && logfilename[0] != '\0') 708 _nl_log_untranslated (logfilename, domainname, msgid1, msgid2, plural); 709 } 710 #endif 711 __set_errno (saved_errno); 712 return (plural == 0 713 ? (char *) msgid1 714 /* Use the Germanic plural rule. */ 715 : n == 1 ? (char *) msgid1 : (char *) msgid2); 716 } 717 718 719 char * 720 internal_function 721 _nl_find_msg (struct loaded_l10nfile *domain_file, 722 struct binding *domainbinding, const char *msgid, 723 size_t *lengthp) 724 { 725 struct loaded_domain *domain; 726 nls_uint32 nstrings; 727 size_t act; 728 char *result; 729 size_t resultlen; 730 731 if (domain_file->decided == 0) 732 _nl_load_domain (domain_file, domainbinding); 733 734 if (domain_file->data == NULL) 735 return NULL; 736 737 domain = (struct loaded_domain *) domain_file->data; 738 739 nstrings = domain->nstrings; 740 741 /* Locate the MSGID and its translation. */ 742 if (domain->hash_tab != NULL) 743 { 744 /* Use the hashing table. */ 745 nls_uint32 len = strlen (msgid); 746 nls_uint32 hash_val = hash_string (msgid); 747 nls_uint32 idx = hash_val % domain->hash_size; 748 nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); 749 750 while (1) 751 { 752 nls_uint32 nstr = 753 W (domain->must_swap_hash_tab, domain->hash_tab[idx]); 754 755 if (nstr == 0) 756 /* Hash table entry is empty. */ 757 return NULL; 758 759 nstr--; 760 761 /* Compare msgid with the original string at index nstr. 762 We compare the lengths with >=, not ==, because plural entries 763 are represented by strings with an embedded NUL. */ 764 if (nstr < nstrings 765 ? W (domain->must_swap, domain->orig_tab[nstr].length) >= len 766 && (strcmp (msgid, 767 domain->data + W (domain->must_swap, 768 domain->orig_tab[nstr].offset)) 769 == 0) 770 : domain->orig_sysdep_tab[nstr - nstrings].length > len 771 && (strcmp (msgid, 772 domain->orig_sysdep_tab[nstr - nstrings].pointer) 773 == 0)) 774 { 775 act = nstr; 776 goto found; 777 } 778 779 if (idx >= domain->hash_size - incr) 780 idx -= domain->hash_size - incr; 781 else 782 idx += incr; 783 } 784 /* NOTREACHED */ 785 } 786 else 787 { 788 /* Try the default method: binary search in the sorted array of 789 messages. */ 790 size_t top, bottom; 791 792 bottom = 0; 793 top = nstrings; 794 while (bottom < top) 795 { 796 int cmp_val; 797 798 act = (bottom + top) / 2; 799 cmp_val = strcmp (msgid, (domain->data 800 + W (domain->must_swap, 801 domain->orig_tab[act].offset))); 802 if (cmp_val < 0) 803 top = act; 804 else if (cmp_val > 0) 805 bottom = act + 1; 806 else 807 goto found; 808 } 809 /* No translation was found. */ 810 return NULL; 811 } 812 813 found: 814 /* The translation was found at index ACT. If we have to convert the 815 string to use a different character set, this is the time. */ 816 if (act < nstrings) 817 { 818 result = (char *) 819 (domain->data + W (domain->must_swap, domain->trans_tab[act].offset)); 820 resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1; 821 } 822 else 823 { 824 result = (char *) domain->trans_sysdep_tab[act - nstrings].pointer; 825 resultlen = domain->trans_sysdep_tab[act - nstrings].length; 826 } 827 828 #if defined _LIBC || HAVE_ICONV 829 if (domain->codeset_cntr 830 != (domainbinding != NULL ? domainbinding->codeset_cntr : 0)) 831 { 832 /* The domain's codeset has changed through bind_textdomain_codeset() 833 since the message catalog was initialized or last accessed. We 834 have to reinitialize the converter. */ 835 _nl_free_domain_conv (domain); 836 _nl_init_domain_conv (domain_file, domain, domainbinding); 837 } 838 839 if ( 840 # ifdef _LIBC 841 domain->conv != (__gconv_t) -1 842 # else 843 # if HAVE_ICONV 844 domain->conv != (iconv_t) -1 845 # endif 846 # endif 847 ) 848 { 849 /* We are supposed to do a conversion. First allocate an 850 appropriate table with the same structure as the table 851 of translations in the file, where we can put the pointers 852 to the converted strings in. 853 There is a slight complication with plural entries. They 854 are represented by consecutive NUL terminated strings. We 855 handle this case by converting RESULTLEN bytes, including 856 NULs. */ 857 858 if (domain->conv_tab == NULL 859 && ((domain->conv_tab = 860 (char **) calloc (nstrings + domain->n_sysdep_strings, 861 sizeof (char *))) 862 == NULL)) 863 /* Mark that we didn't succeed allocating a table. */ 864 domain->conv_tab = (char **) -1; 865 866 if (__builtin_expect (domain->conv_tab == (char **) -1, 0)) 867 /* Nothing we can do, no more memory. */ 868 goto converted; 869 870 if (domain->conv_tab[act] == NULL) 871 { 872 /* We haven't used this string so far, so it is not 873 translated yet. Do this now. */ 874 /* We use a bit more efficient memory handling. 875 We allocate always larger blocks which get used over 876 time. This is faster than many small allocations. */ 877 __libc_lock_define_initialized (static, lock) 878 # define INITIAL_BLOCK_SIZE 4080 879 static unsigned char *freemem; 880 static size_t freemem_size; 881 882 const unsigned char *inbuf; 883 unsigned char *outbuf; 884 int malloc_count; 885 # ifndef _LIBC 886 transmem_block_t *transmem_list = NULL; 887 # endif 888 889 __libc_lock_lock (lock); 890 891 inbuf = (const unsigned char *) result; 892 outbuf = freemem + sizeof (size_t); 893 894 malloc_count = 0; 895 while (1) 896 { 897 transmem_block_t *newmem; 898 # ifdef _LIBC 899 size_t non_reversible; 900 int res; 901 902 if (freemem_size < sizeof (size_t)) 903 goto resize_freemem; 904 905 res = __gconv (domain->conv, 906 &inbuf, inbuf + resultlen, 907 &outbuf, 908 outbuf + freemem_size - sizeof (size_t), 909 &non_reversible); 910 911 if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT) 912 break; 913 914 if (res != __GCONV_FULL_OUTPUT) 915 { 916 __libc_lock_unlock (lock); 917 goto converted; 918 } 919 920 inbuf = result; 921 # else 922 # if HAVE_ICONV 923 const char *inptr = (const char *) inbuf; 924 size_t inleft = resultlen; 925 char *outptr = (char *) outbuf; 926 size_t outleft; 927 928 if (freemem_size < sizeof (size_t)) 929 goto resize_freemem; 930 931 outleft = freemem_size - sizeof (size_t); 932 if (iconv (domain->conv, 933 (ICONV_CONST char **) &inptr, &inleft, 934 &outptr, &outleft) 935 != (size_t) (-1)) 936 { 937 outbuf = (unsigned char *) outptr; 938 break; 939 } 940 if (errno != E2BIG) 941 { 942 __libc_lock_unlock (lock); 943 goto converted; 944 } 945 # endif 946 # endif 947 948 resize_freemem: 949 /* We must allocate a new buffer or resize the old one. */ 950 if (malloc_count > 0) 951 { 952 ++malloc_count; 953 freemem_size = malloc_count * INITIAL_BLOCK_SIZE; 954 newmem = (transmem_block_t *) realloc (transmem_list, 955 freemem_size); 956 # ifdef _LIBC 957 if (newmem != NULL) 958 transmem_list = transmem_list->next; 959 else 960 { 961 struct transmem_list *old = transmem_list; 962 963 transmem_list = transmem_list->next; 964 free (old); 965 } 966 # endif 967 } 968 else 969 { 970 malloc_count = 1; 971 freemem_size = INITIAL_BLOCK_SIZE; 972 newmem = (transmem_block_t *) malloc (freemem_size); 973 } 974 if (__builtin_expect (newmem == NULL, 0)) 975 { 976 freemem = NULL; 977 freemem_size = 0; 978 __libc_lock_unlock (lock); 979 goto converted; 980 } 981 982 # ifdef _LIBC 983 /* Add the block to the list of blocks we have to free 984 at some point. */ 985 newmem->next = transmem_list; 986 transmem_list = newmem; 987 988 freemem = newmem->data; 989 freemem_size -= offsetof (struct transmem_list, data); 990 # else 991 transmem_list = newmem; 992 freemem = newmem; 993 # endif 994 995 outbuf = freemem + sizeof (size_t); 996 } 997 998 /* We have now in our buffer a converted string. Put this 999 into the table of conversions. */ 1000 *(size_t *) freemem = outbuf - freemem - sizeof (size_t); 1001 domain->conv_tab[act] = (char *) freemem; 1002 /* Shrink freemem, but keep it aligned. */ 1003 freemem_size -= outbuf - freemem; 1004 freemem = outbuf; 1005 freemem += freemem_size & (alignof (size_t) - 1); 1006 freemem_size = freemem_size & ~ (alignof (size_t) - 1); 1007 1008 __libc_lock_unlock (lock); 1009 } 1010 1011 /* Now domain->conv_tab[act] contains the translation of all 1012 the plural variants. */ 1013 result = domain->conv_tab[act] + sizeof (size_t); 1014 resultlen = *(size_t *) domain->conv_tab[act]; 1015 } 1016 1017 converted: 1018 /* The result string is converted. */ 1019 1020 #endif /* _LIBC || HAVE_ICONV */ 1021 1022 *lengthp = resultlen; 1023 return result; 1024 } 1025 1026 1027 /* Look up a plural variant. */ 1028 static char * 1029 internal_function 1030 plural_lookup (struct loaded_l10nfile *domain, unsigned long int n, 1031 const char *translation, size_t translation_len) 1032 { 1033 struct loaded_domain *domaindata = (struct loaded_domain *) domain->data; 1034 unsigned long int index; 1035 const char *p; 1036 1037 index = plural_eval (domaindata->plural, n); 1038 if (index >= domaindata->nplurals) 1039 /* This should never happen. It means the plural expression and the 1040 given maximum value do not match. */ 1041 index = 0; 1042 1043 /* Skip INDEX strings at TRANSLATION. */ 1044 p = translation; 1045 while (index-- > 0) 1046 { 1047 #ifdef _LIBC 1048 p = __rawmemchr (p, '\0'); 1049 #else 1050 p = strchr (p, '\0'); 1051 #endif 1052 /* And skip over the NUL byte. */ 1053 p++; 1054 1055 if (p >= translation + translation_len) 1056 /* This should never happen. It means the plural expression 1057 evaluated to a value larger than the number of variants 1058 available for MSGID1. */ 1059 return (char *) translation; 1060 } 1061 return (char *) p; 1062 } 1063 1064 #ifndef _LIBC 1065 /* Return string representation of locale CATEGORY. */ 1066 static const char * 1067 internal_function 1068 category_to_name (int category) 1069 { 1070 const char *retval; 1071 1072 switch (category) 1073 { 1074 #ifdef LC_COLLATE 1075 case LC_COLLATE: 1076 retval = "LC_COLLATE"; 1077 break; 1078 #endif 1079 #ifdef LC_CTYPE 1080 case LC_CTYPE: 1081 retval = "LC_CTYPE"; 1082 break; 1083 #endif 1084 #ifdef LC_MONETARY 1085 case LC_MONETARY: 1086 retval = "LC_MONETARY"; 1087 break; 1088 #endif 1089 #ifdef LC_NUMERIC 1090 case LC_NUMERIC: 1091 retval = "LC_NUMERIC"; 1092 break; 1093 #endif 1094 #ifdef LC_TIME 1095 case LC_TIME: 1096 retval = "LC_TIME"; 1097 break; 1098 #endif 1099 #ifdef LC_MESSAGES 1100 case LC_MESSAGES: 1101 retval = "LC_MESSAGES"; 1102 break; 1103 #endif 1104 #ifdef LC_RESPONSE 1105 case LC_RESPONSE: 1106 retval = "LC_RESPONSE"; 1107 break; 1108 #endif 1109 #ifdef LC_ALL 1110 case LC_ALL: 1111 /* This might not make sense but is perhaps better than any other 1112 value. */ 1113 retval = "LC_ALL"; 1114 break; 1115 #endif 1116 default: 1117 /* If you have a better idea for a default value let me know. */ 1118 retval = "LC_XXX"; 1119 } 1120 1121 return retval; 1122 } 1123 #endif 1124 1125 /* Guess value of current locale from value of the environment variables. */ 1126 static const char * 1127 internal_function 1128 guess_category_value (int category, const char *categoryname) 1129 { 1130 const char *language; 1131 const char *retval; 1132 1133 /* The highest priority value is the `LANGUAGE' environment 1134 variable. But we don't use the value if the currently selected 1135 locale is the C locale. This is a GNU extension. */ 1136 language = getenv ("LANGUAGE"); 1137 if (language != NULL && language[0] == '\0') 1138 language = NULL; 1139 1140 /* We have to proceed with the POSIX methods of looking to `LC_ALL', 1141 `LC_xxx', and `LANG'. On some systems this can be done by the 1142 `setlocale' function itself. */ 1143 #ifdef _LIBC 1144 retval = __current_locale_name (category); 1145 #else 1146 retval = _nl_locale_name (category, categoryname); 1147 #endif 1148 1149 /* Ignore LANGUAGE if the locale is set to "C" because 1150 1. "C" locale usually uses the ASCII encoding, and most international 1151 messages use non-ASCII characters. These characters get displayed 1152 as question marks (if using glibc's iconv()) or as invalid 8-bit 1153 characters (because other iconv()s refuse to convert most non-ASCII 1154 characters to ASCII). In any case, the output is ugly. 1155 2. The precise output of some programs in the "C" locale is specified 1156 by POSIX and should not depend on environment variables like 1157 "LANGUAGE". We allow such programs to use gettext(). */ 1158 return language != NULL && strcmp (retval, "C") != 0 ? language : retval; 1159 } 1160 1161 /* @@ begin of epilog @@ */ 1162 1163 /* We don't want libintl.a to depend on any other library. So we 1164 avoid the non-standard function stpcpy. In GNU C Library this 1165 function is available, though. Also allow the symbol HAVE_STPCPY 1166 to be defined. */ 1167 #if !_LIBC && !HAVE_STPCPY 1168 static char * 1169 stpcpy (char *dest, const char *src) 1170 { 1171 while ((*dest++ = *src++) != '\0') 1172 /* Do nothing. */ ; 1173 return dest - 1; 1174 } 1175 #endif 1176 1177 #if !_LIBC && !HAVE_MEMPCPY 1178 static void * 1179 mempcpy (void *dest, const void *src, size_t n) 1180 { 1181 return (void *) ((char *) memcpy (dest, src, n) + n); 1182 } 1183 #endif 1184 1185 1186 #ifdef _LIBC 1187 /* If we want to free all resources we have to do some work at 1188 program's end. */ 1189 libc_freeres_fn (free_mem) 1190 { 1191 void *old; 1192 1193 while (_nl_domain_bindings != NULL) 1194 { 1195 struct binding *oldp = _nl_domain_bindings; 1196 _nl_domain_bindings = _nl_domain_bindings->next; 1197 if (oldp->dirname != INTUSE(_nl_default_dirname)) 1198 /* Yes, this is a pointer comparison. */ 1199 free (oldp->dirname); 1200 free (oldp->codeset); 1201 free (oldp); 1202 } 1203 1204 if (_nl_current_default_domain != _nl_default_default_domain) 1205 /* Yes, again a pointer comparison. */ 1206 free ((char *) _nl_current_default_domain); 1207 1208 /* Remove the search tree with the known translations. */ 1209 __tdestroy (root, free); 1210 root = NULL; 1211 1212 while (transmem_list != NULL) 1213 { 1214 old = transmem_list; 1215 transmem_list = transmem_list->next; 1216 free (old); 1217 } 1218 } 1219 #endif 1220