1/* $NetBSD$ */ 2 3/* Implementation of the internal dcigettext function. 4 Copyright (C) 1995-1999, 2000-2003 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms of the GNU Library General Public License as published 8 by the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Library General Public License for more details. 15 16 You should have received a copy of the GNU Library General Public 17 License along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 19 USA. */ 20 21/* Tell glibc's <string.h> to provide a prototype for mempcpy(). 22 This must come before <config.h> because <config.h> may include 23 <features.h>, and once <features.h> has been included, it's too late. */ 24#ifndef _GNU_SOURCE 25# define _GNU_SOURCE 1 26#endif 27 28#ifdef HAVE_CONFIG_H 29# include <config.h> 30#endif 31 32#include <sys/types.h> 33 34#ifdef __GNUC__ 35# define alloca __builtin_alloca 36# define HAVE_ALLOCA 1 37#else 38# ifdef _MSC_VER 39# include <malloc.h> 40# define alloca _alloca 41# else 42# if defined HAVE_ALLOCA_H || defined _LIBC 43# include <alloca.h> 44# else 45# ifdef _AIX 46 #pragma alloca 47# else 48# ifndef alloca 49char *alloca (); 50# endif 51# endif 52# endif 53# endif 54#endif 55 56#include <errno.h> 57#ifndef errno 58extern int errno; 59#endif 60#ifndef __set_errno 61# define __set_errno(val) errno = (val) 62#endif 63 64#include <stddef.h> 65#include <stdlib.h> 66#include <string.h> 67 68#if defined HAVE_UNISTD_H || defined _LIBC 69# include <unistd.h> 70#endif 71 72#include <locale.h> 73 74#ifdef _LIBC 75 /* Guess whether integer division by zero raises signal SIGFPE. 76 Set to 1 only if you know for sure. In case of doubt, set to 0. */ 77# if defined __alpha__ || defined __arm__ || defined __i386__ \ 78 || defined __m68k__ || defined __s390__ 79# define INTDIV0_RAISES_SIGFPE 1 80# else 81# define INTDIV0_RAISES_SIGFPE 0 82# endif 83#endif 84#if !INTDIV0_RAISES_SIGFPE 85# include <signal.h> 86#endif 87 88#if defined HAVE_SYS_PARAM_H || defined _LIBC 89# include <sys/param.h> 90#endif 91 92#include "gettextP.h" 93#include "plural-exp.h" 94#ifdef _LIBC 95# include <libintl.h> 96#else 97# include "libgnuintl.h" 98#endif 99#include "hash-string.h" 100 101/* Thread safetyness. */ 102#ifdef _LIBC 103# include <bits/libc-lock.h> 104#else 105/* Provide dummy implementation if this is outside glibc. */ 106# define __libc_lock_define_initialized(CLASS, NAME) 107# define __libc_lock_lock(NAME) 108# define __libc_lock_unlock(NAME) 109# define __libc_rwlock_define_initialized(CLASS, NAME) 110# define __libc_rwlock_rdlock(NAME) 111# define __libc_rwlock_unlock(NAME) 112#endif 113 114/* Alignment of types. */ 115#if defined __GNUC__ && __GNUC__ >= 2 116# define alignof(TYPE) __alignof__ (TYPE) 117#else 118# define alignof(TYPE) \ 119 ((int) &((struct { char dummy1; TYPE dummy2; } *) 0)->dummy2) 120#endif 121 122/* The internal variables in the standalone libintl.a must have different 123 names than the internal variables in GNU libc, otherwise programs 124 using libintl.a cannot be linked statically. */ 125#if !defined _LIBC 126# define _nl_default_default_domain libintl_nl_default_default_domain 127# define _nl_current_default_domain libintl_nl_current_default_domain 128# define _nl_default_dirname libintl_nl_default_dirname 129# define _nl_domain_bindings libintl_nl_domain_bindings 130#endif 131 132/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */ 133#ifndef offsetof 134# define offsetof(type,ident) ((size_t)&(((type*)0)->ident)) 135#endif 136 137/* @@ end of prolog @@ */ 138 139#ifdef _LIBC 140/* Rename the non ANSI C functions. This is required by the standard 141 because some ANSI C functions will require linking with this object 142 file and the name space must not be polluted. */ 143# define getcwd __getcwd 144# ifndef stpcpy 145# define stpcpy __stpcpy 146# endif 147# define tfind __tfind 148#else 149# if !defined HAVE_GETCWD 150char *getwd (); 151# define getcwd(buf, max) getwd (buf) 152# else 153# if VMS 154# define getcwd(buf, max) (getcwd) (buf, max, 0) 155# else 156char *getcwd (); 157# endif 158# endif 159# ifndef HAVE_STPCPY 160static char *stpcpy (char *dest, const char *src); 161# endif 162# ifndef HAVE_MEMPCPY 163static void *mempcpy (void *dest, const void *src, size_t n); 164# endif 165#endif 166 167/* Amount to increase buffer size by in each try. */ 168#define PATH_INCR 32 169 170/* The following is from pathmax.h. */ 171/* Non-POSIX BSD systems might have gcc's limits.h, which doesn't define 172 PATH_MAX but might cause redefinition warnings when sys/param.h is 173 later included (as on MORE/BSD 4.3). */ 174#if defined _POSIX_VERSION || (defined HAVE_LIMITS_H && !defined __GNUC__) 175# include <limits.h> 176#endif 177 178#ifndef _POSIX_PATH_MAX 179# define _POSIX_PATH_MAX 255 180#endif 181 182#if !defined PATH_MAX && defined _PC_PATH_MAX 183# define PATH_MAX (pathconf ("/", _PC_PATH_MAX) < 1 ? 1024 : pathconf ("/", _PC_PATH_MAX)) 184#endif 185 186/* Don't include sys/param.h if it already has been. */ 187#if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN 188# include <sys/param.h> 189#endif 190 191#if !defined PATH_MAX && defined MAXPATHLEN 192# define PATH_MAX MAXPATHLEN 193#endif 194 195#ifndef PATH_MAX 196# define PATH_MAX _POSIX_PATH_MAX 197#endif 198 199/* Pathname support. 200 ISSLASH(C) tests whether C is a directory separator character. 201 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not, 202 it may be concatenated to a directory pathname. 203 IS_PATH_WITH_DIR(P) tests whether P contains a directory specification. 204 */ 205#if defined _WIN32 || defined __WIN32__ || defined __EMX__ || defined __DJGPP__ 206 /* Win32, OS/2, DOS */ 207# define ISSLASH(C) ((C) == '/' || (C) == '\\') 208# define HAS_DEVICE(P) \ 209 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \ 210 && (P)[1] == ':') 211# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P)) 212# define IS_PATH_WITH_DIR(P) \ 213 (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P)) 214#else 215 /* Unix */ 216# define ISSLASH(C) ((C) == '/') 217# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0]) 218# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL) 219#endif 220 221/* This is the type used for the search tree where known translations 222 are stored. */ 223struct known_translation_t 224{ 225 /* Domain in which to search. */ 226 char *domainname; 227 228 /* The category. */ 229 int category; 230 231 /* State of the catalog counter at the point the string was found. */ 232 int counter; 233 234 /* Catalog where the string was found. */ 235 struct loaded_l10nfile *domain; 236 237 /* And finally the translation. */ 238 const char *translation; 239 size_t translation_length; 240 241 /* Pointer to the string in question. */ 242 char msgid[ZERO]; 243}; 244 245/* Root of the search tree with known translations. We can use this 246 only if the system provides the `tsearch' function family. */ 247#if defined HAVE_TSEARCH || defined _LIBC 248# include <search.h> 249 250static void *root; 251 252# ifdef _LIBC 253# define tsearch __tsearch 254# endif 255 256/* Function to compare two entries in the table of known translations. */ 257static int 258transcmp (const void *p1, const void *p2) 259{ 260 const struct known_translation_t *s1; 261 const struct known_translation_t *s2; 262 int result; 263 264 s1 = (const struct known_translation_t *) p1; 265 s2 = (const struct known_translation_t *) p2; 266 267 result = strcmp (s1->msgid, s2->msgid); 268 if (result == 0) 269 { 270 result = strcmp (s1->domainname, s2->domainname); 271 if (result == 0) 272 /* We compare the category last (though this is the cheapest 273 operation) since it is hopefully always the same (namely 274 LC_MESSAGES). */ 275 result = s1->category - s2->category; 276 } 277 278 return result; 279} 280#endif 281 282#ifndef INTVARDEF 283# define INTVARDEF(name) 284#endif 285#ifndef INTUSE 286# define INTUSE(name) name 287#endif 288 289/* Name of the default domain used for gettext(3) prior any call to 290 textdomain(3). The default value for this is "messages". */ 291const char _nl_default_default_domain[] attribute_hidden = "messages"; 292 293/* Value used as the default domain for gettext(3). */ 294const char *_nl_current_default_domain attribute_hidden 295 = _nl_default_default_domain; 296 297/* Contains the default location of the message catalogs. */ 298#if defined __EMX__ 299extern const char _nl_default_dirname[]; 300#else 301const char _nl_default_dirname[] = LOCALEDIR; 302INTVARDEF (_nl_default_dirname) 303#endif 304 305/* List with bindings of specific domains created by bindtextdomain() 306 calls. */ 307struct binding *_nl_domain_bindings; 308 309/* Prototypes for local functions. */ 310static char *plural_lookup (struct loaded_l10nfile *domain, 311 unsigned long int n, 312 const char *translation, size_t translation_len) 313 internal_function; 314static const char *guess_category_value (int category, 315 const char *categoryname) 316 internal_function; 317#ifdef _LIBC 318# include "../locale/localeinfo.h" 319# define category_to_name(category) _nl_category_names[category] 320#else 321static const char *category_to_name (int category) internal_function; 322#endif 323 324 325/* For those loosing systems which don't have `alloca' we have to add 326 some additional code emulating it. */ 327#ifdef HAVE_ALLOCA 328/* Nothing has to be done. */ 329# define freea(p) /* nothing */ 330# define ADD_BLOCK(list, address) /* nothing */ 331# define FREE_BLOCKS(list) /* nothing */ 332#else 333struct block_list 334{ 335 void *address; 336 struct block_list *next; 337}; 338# define ADD_BLOCK(list, addr) \ 339 do { \ 340 struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ 341 /* If we cannot get a free block we cannot add the new element to \ 342 the list. */ \ 343 if (newp != NULL) { \ 344 newp->address = (addr); \ 345 newp->next = (list); \ 346 (list) = newp; \ 347 } \ 348 } while (0) 349# define FREE_BLOCKS(list) \ 350 do { \ 351 while (list != NULL) { \ 352 struct block_list *old = list; \ 353 list = list->next; \ 354 free (old->address); \ 355 free (old); \ 356 } \ 357 } while (0) 358# undef alloca 359# define alloca(size) (malloc (size)) 360# define freea(p) free (p) 361#endif /* have alloca */ 362 363 364#ifdef _LIBC 365/* List of blocks allocated for translations. */ 366typedef struct transmem_list 367{ 368 struct transmem_list *next; 369 char data[ZERO]; 370} transmem_block_t; 371static struct transmem_list *transmem_list; 372#else 373typedef unsigned char transmem_block_t; 374#endif 375 376 377/* Names for the libintl functions are a problem. They must not clash 378 with existing names and they should follow ANSI C. But this source 379 code is also used in GNU C Library where the names have a __ 380 prefix. So we have to make a difference here. */ 381#ifdef _LIBC 382# define DCIGETTEXT __dcigettext 383#else 384# define DCIGETTEXT libintl_dcigettext 385#endif 386 387/* Lock variable to protect the global data in the gettext implementation. */ 388#ifdef _LIBC 389__libc_rwlock_define_initialized (, _nl_state_lock attribute_hidden) 390#endif 391 392/* Checking whether the binaries runs SUID must be done and glibc provides 393 easier methods therefore we make a difference here. */ 394#ifdef _LIBC 395# define ENABLE_SECURE __libc_enable_secure 396# define DETERMINE_SECURE 397#else 398# ifndef HAVE_GETUID 399# define getuid() 0 400# endif 401# ifndef HAVE_GETGID 402# define getgid() 0 403# endif 404# ifndef HAVE_GETEUID 405# define geteuid() getuid() 406# endif 407# ifndef HAVE_GETEGID 408# define getegid() getgid() 409# endif 410static int enable_secure; 411# define ENABLE_SECURE (enable_secure == 1) 412# define DETERMINE_SECURE \ 413 if (enable_secure == 0) \ 414 { \ 415 if (getuid () != geteuid () || getgid () != getegid ()) \ 416 enable_secure = 1; \ 417 else \ 418 enable_secure = -1; \ 419 } 420#endif 421 422/* Get the function to evaluate the plural expression. */ 423#include "eval-plural.h" 424 425/* Look up MSGID in the DOMAINNAME message catalog for the current 426 CATEGORY locale and, if PLURAL is nonzero, search over string 427 depending on the plural form determined by N. */ 428char * 429DCIGETTEXT (const char *domainname, const char *msgid1, const char *msgid2, 430 int plural, unsigned long int n, int category) 431{ 432#ifndef HAVE_ALLOCA 433 struct block_list *block_list = NULL; 434#endif 435 struct loaded_l10nfile *domain; 436 struct binding *binding; 437 const char *categoryname; 438 const char *categoryvalue; 439 char *dirname, *xdomainname; 440 char *single_locale; 441 char *retval; 442 size_t retlen; 443 int saved_errno; 444#if defined HAVE_TSEARCH || defined _LIBC 445 struct known_translation_t *search; 446 struct known_translation_t **foundp = NULL; 447 size_t msgid_len; 448#endif 449 size_t domainname_len; 450 451 /* If no real MSGID is given return NULL. */ 452 if (msgid1 == NULL) 453 return NULL; 454 455#ifdef _LIBC 456 if (category < 0 || category >= __LC_LAST || category == LC_ALL) 457 /* Bogus. */ 458 return (plural == 0 459 ? (char *) msgid1 460 /* Use the Germanic plural rule. */ 461 : n == 1 ? (char *) msgid1 : (char *) msgid2); 462#endif 463 464 __libc_rwlock_rdlock (_nl_state_lock); 465 466 /* If DOMAINNAME is NULL, we are interested in the default domain. If 467 CATEGORY is not LC_MESSAGES this might not make much sense but the 468 definition left this undefined. */ 469 if (domainname == NULL) 470 domainname = _nl_current_default_domain; 471 472 /* OS/2 specific: backward compatibility with older libintl versions */ 473#ifdef LC_MESSAGES_COMPAT 474 if (category == LC_MESSAGES_COMPAT) 475 category = LC_MESSAGES; 476#endif 477 478#if defined HAVE_TSEARCH || defined _LIBC 479 msgid_len = strlen (msgid1) + 1; 480 481 /* Try to find the translation among those which we found at 482 some time. */ 483 search = (struct known_translation_t *) 484 alloca (offsetof (struct known_translation_t, msgid) + msgid_len); 485 memcpy (search->msgid, msgid1, msgid_len); 486 search->domainname = (char *) domainname; 487 search->category = category; 488 489 foundp = (struct known_translation_t **) tfind (search, &root, transcmp); 490 freea (search); 491 if (foundp != NULL && (*foundp)->counter == _nl_msg_cat_cntr) 492 { 493 /* Now deal with plural. */ 494 if (plural) 495 retval = plural_lookup ((*foundp)->domain, n, (*foundp)->translation, 496 (*foundp)->translation_length); 497 else 498 retval = (char *) (*foundp)->translation; 499 500 __libc_rwlock_unlock (_nl_state_lock); 501 return retval; 502 } 503#endif 504 505 /* Preserve the `errno' value. */ 506 saved_errno = errno; 507 508 /* See whether this is a SUID binary or not. */ 509 DETERMINE_SECURE; 510 511 /* First find matching binding. */ 512 for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next) 513 { 514 int compare = strcmp (domainname, binding->domainname); 515 if (compare == 0) 516 /* We found it! */ 517 break; 518 if (compare < 0) 519 { 520 /* It is not in the list. */ 521 binding = NULL; 522 break; 523 } 524 } 525 526 if (binding == NULL) 527 dirname = (char *) INTUSE(_nl_default_dirname); 528 else if (IS_ABSOLUTE_PATH (binding->dirname)) 529 dirname = binding->dirname; 530 else 531 { 532 /* We have a relative path. Make it absolute now. */ 533 size_t dirname_len = strlen (binding->dirname) + 1; 534 size_t path_max; 535 char *ret; 536 537 path_max = (unsigned int) PATH_MAX; 538 path_max += 2; /* The getcwd docs say to do this. */ 539 540 for (;;) 541 { 542 dirname = (char *) alloca (path_max + dirname_len); 543 ADD_BLOCK (block_list, dirname); 544 545 __set_errno (0); 546 ret = getcwd (dirname, path_max); 547 if (ret != NULL || errno != ERANGE) 548 break; 549 550 path_max += path_max / 2; 551 path_max += PATH_INCR; 552 } 553 554 if (ret == NULL) 555 /* We cannot get the current working directory. Don't signal an 556 error but simply return the default string. */ 557 goto return_untranslated; 558 559 stpcpy (stpcpy (strchr (dirname, '\0'), "/"), binding->dirname); 560 } 561 562 /* Now determine the symbolic name of CATEGORY and its value. */ 563 categoryname = category_to_name (category); 564 categoryvalue = guess_category_value (category, categoryname); 565 566 domainname_len = strlen (domainname); 567 xdomainname = (char *) alloca (strlen (categoryname) 568 + domainname_len + 5); 569 ADD_BLOCK (block_list, xdomainname); 570 571 stpcpy (mempcpy (stpcpy (stpcpy (xdomainname, categoryname), "/"), 572 domainname, domainname_len), 573 ".mo"); 574 575 /* Creating working area. */ 576 single_locale = (char *) alloca (strlen (categoryvalue) + 1); 577 ADD_BLOCK (block_list, single_locale); 578 579 580 /* Search for the given string. This is a loop because we perhaps 581 got an ordered list of languages to consider for the translation. */ 582 while (1) 583 { 584 /* Make CATEGORYVALUE point to the next element of the list. */ 585 while (categoryvalue[0] != '\0' && categoryvalue[0] == ':') 586 ++categoryvalue; 587 if (categoryvalue[0] == '\0') 588 { 589 /* The whole contents of CATEGORYVALUE has been searched but 590 no valid entry has been found. We solve this situation 591 by implicitly appending a "C" entry, i.e. no translation 592 will take place. */ 593 single_locale[0] = 'C'; 594 single_locale[1] = '\0'; 595 } 596 else 597 { 598 char *cp = single_locale; 599 while (categoryvalue[0] != '\0' && categoryvalue[0] != ':') 600 *cp++ = *categoryvalue++; 601 *cp = '\0'; 602 603 /* When this is a SUID binary we must not allow accessing files 604 outside the dedicated directories. */ 605 if (ENABLE_SECURE && IS_PATH_WITH_DIR (single_locale)) 606 /* Ingore this entry. */ 607 continue; 608 } 609 610 /* If the current locale value is C (or POSIX) we don't load a 611 domain. Return the MSGID. */ 612 if (strcmp (single_locale, "C") == 0 613 || strcmp (single_locale, "POSIX") == 0) 614 break; 615 616 /* Find structure describing the message catalog matching the 617 DOMAINNAME and CATEGORY. */ 618 domain = _nl_find_domain (dirname, single_locale, xdomainname, binding); 619 620 if (domain != NULL) 621 { 622 retval = _nl_find_msg (domain, binding, msgid1, &retlen); 623 624 if (retval == NULL) 625 { 626 int cnt; 627 628 for (cnt = 0; domain->successor[cnt] != NULL; ++cnt) 629 { 630 retval = _nl_find_msg (domain->successor[cnt], binding, 631 msgid1, &retlen); 632 633 if (retval != NULL) 634 { 635 domain = domain->successor[cnt]; 636 break; 637 } 638 } 639 } 640 641 if (retval != NULL) 642 { 643 /* Found the translation of MSGID1 in domain DOMAIN: 644 starting at RETVAL, RETLEN bytes. */ 645 FREE_BLOCKS (block_list); 646#if defined HAVE_TSEARCH || defined _LIBC 647 if (foundp == NULL) 648 { 649 /* Create a new entry and add it to the search tree. */ 650 struct known_translation_t *newp; 651 652 newp = (struct known_translation_t *) 653 malloc (offsetof (struct known_translation_t, msgid) 654 + msgid_len + domainname_len + 1); 655 if (newp != NULL) 656 { 657 newp->domainname = 658 mempcpy (newp->msgid, msgid1, msgid_len); 659 memcpy (newp->domainname, domainname, domainname_len + 1); 660 newp->category = category; 661 newp->counter = _nl_msg_cat_cntr; 662 newp->domain = domain; 663 newp->translation = retval; 664 newp->translation_length = retlen; 665 666 /* Insert the entry in the search tree. */ 667 foundp = (struct known_translation_t **) 668 tsearch (newp, &root, transcmp); 669 if (foundp == NULL 670 || __builtin_expect (*foundp != newp, 0)) 671 /* The insert failed. */ 672 free (newp); 673 } 674 } 675 else 676 { 677 /* We can update the existing entry. */ 678 (*foundp)->counter = _nl_msg_cat_cntr; 679 (*foundp)->domain = domain; 680 (*foundp)->translation = retval; 681 (*foundp)->translation_length = retlen; 682 } 683#endif 684 __set_errno (saved_errno); 685 686 /* Now deal with plural. */ 687 if (plural) 688 retval = plural_lookup (domain, n, retval, retlen); 689 690 __libc_rwlock_unlock (_nl_state_lock); 691 return retval; 692 } 693 } 694 } 695 696 return_untranslated: 697 /* Return the untranslated MSGID. */ 698 FREE_BLOCKS (block_list); 699 __libc_rwlock_unlock (_nl_state_lock); 700#ifndef _LIBC 701 if (!ENABLE_SECURE) 702 { 703 extern void _nl_log_untranslated (const char *logfilename, 704 const char *domainname, 705 const char *msgid1, const char *msgid2, 706 int plural); 707 const char *logfilename = getenv ("GETTEXT_LOG_UNTRANSLATED"); 708 709 if (logfilename != NULL && logfilename[0] != '\0') 710 _nl_log_untranslated (logfilename, domainname, msgid1, msgid2, plural); 711 } 712#endif 713 __set_errno (saved_errno); 714 return (plural == 0 715 ? (char *) msgid1 716 /* Use the Germanic plural rule. */ 717 : n == 1 ? (char *) msgid1 : (char *) msgid2); 718} 719 720 721char * 722internal_function 723_nl_find_msg (struct loaded_l10nfile *domain_file, 724 struct binding *domainbinding, const char *msgid, 725 size_t *lengthp) 726{ 727 struct loaded_domain *domain; 728 nls_uint32 nstrings; 729 size_t act; 730 char *result; 731 size_t resultlen; 732 733 if (domain_file->decided == 0) 734 _nl_load_domain (domain_file, domainbinding); 735 736 if (domain_file->data == NULL) 737 return NULL; 738 739 domain = (struct loaded_domain *) domain_file->data; 740 741 nstrings = domain->nstrings; 742 743 /* Locate the MSGID and its translation. */ 744 if (domain->hash_tab != NULL) 745 { 746 /* Use the hashing table. */ 747 nls_uint32 len = strlen (msgid); 748 nls_uint32 hash_val = hash_string (msgid); 749 nls_uint32 idx = hash_val % domain->hash_size; 750 nls_uint32 incr = 1 + (hash_val % (domain->hash_size - 2)); 751 752 while (1) 753 { 754 nls_uint32 nstr = 755 W (domain->must_swap_hash_tab, domain->hash_tab[idx]); 756 757 if (nstr == 0) 758 /* Hash table entry is empty. */ 759 return NULL; 760 761 nstr--; 762 763 /* Compare msgid with the original string at index nstr. 764 We compare the lengths with >=, not ==, because plural entries 765 are represented by strings with an embedded NUL. */ 766 if (nstr < nstrings 767 ? W (domain->must_swap, domain->orig_tab[nstr].length) >= len 768 && (strcmp (msgid, 769 domain->data + W (domain->must_swap, 770 domain->orig_tab[nstr].offset)) 771 == 0) 772 : domain->orig_sysdep_tab[nstr - nstrings].length > len 773 && (strcmp (msgid, 774 domain->orig_sysdep_tab[nstr - nstrings].pointer) 775 == 0)) 776 { 777 act = nstr; 778 goto found; 779 } 780 781 if (idx >= domain->hash_size - incr) 782 idx -= domain->hash_size - incr; 783 else 784 idx += incr; 785 } 786 /* NOTREACHED */ 787 } 788 else 789 { 790 /* Try the default method: binary search in the sorted array of 791 messages. */ 792 size_t top, bottom; 793 794 bottom = 0; 795 top = nstrings; 796 while (bottom < top) 797 { 798 int cmp_val; 799 800 act = (bottom + top) / 2; 801 cmp_val = strcmp (msgid, (domain->data 802 + W (domain->must_swap, 803 domain->orig_tab[act].offset))); 804 if (cmp_val < 0) 805 top = act; 806 else if (cmp_val > 0) 807 bottom = act + 1; 808 else 809 goto found; 810 } 811 /* No translation was found. */ 812 return NULL; 813 } 814 815 found: 816 /* The translation was found at index ACT. If we have to convert the 817 string to use a different character set, this is the time. */ 818 if (act < nstrings) 819 { 820 result = (char *) 821 (domain->data + W (domain->must_swap, domain->trans_tab[act].offset)); 822 resultlen = W (domain->must_swap, domain->trans_tab[act].length) + 1; 823 } 824 else 825 { 826 result = (char *) domain->trans_sysdep_tab[act - nstrings].pointer; 827 resultlen = domain->trans_sysdep_tab[act - nstrings].length; 828 } 829 830#if defined _LIBC || HAVE_ICONV 831 if (domain->codeset_cntr 832 != (domainbinding != NULL ? domainbinding->codeset_cntr : 0)) 833 { 834 /* The domain's codeset has changed through bind_textdomain_codeset() 835 since the message catalog was initialized or last accessed. We 836 have to reinitialize the converter. */ 837 _nl_free_domain_conv (domain); 838 _nl_init_domain_conv (domain_file, domain, domainbinding); 839 } 840 841 if ( 842# ifdef _LIBC 843 domain->conv != (__gconv_t) -1 844# else 845# if HAVE_ICONV 846 domain->conv != (iconv_t) -1 847# endif 848# endif 849 ) 850 { 851 /* We are supposed to do a conversion. First allocate an 852 appropriate table with the same structure as the table 853 of translations in the file, where we can put the pointers 854 to the converted strings in. 855 There is a slight complication with plural entries. They 856 are represented by consecutive NUL terminated strings. We 857 handle this case by converting RESULTLEN bytes, including 858 NULs. */ 859 860 if (domain->conv_tab == NULL 861 && ((domain->conv_tab = 862 (char **) calloc (nstrings + domain->n_sysdep_strings, 863 sizeof (char *))) 864 == NULL)) 865 /* Mark that we didn't succeed allocating a table. */ 866 domain->conv_tab = (char **) -1; 867 868 if (__builtin_expect (domain->conv_tab == (char **) -1, 0)) 869 /* Nothing we can do, no more memory. */ 870 goto converted; 871 872 if (domain->conv_tab[act] == NULL) 873 { 874 /* We haven't used this string so far, so it is not 875 translated yet. Do this now. */ 876 /* We use a bit more efficient memory handling. 877 We allocate always larger blocks which get used over 878 time. This is faster than many small allocations. */ 879 __libc_lock_define_initialized (static, lock) 880# define INITIAL_BLOCK_SIZE 4080 881 static unsigned char *freemem; 882 static size_t freemem_size; 883 884 const unsigned char *inbuf; 885 unsigned char *outbuf; 886 int malloc_count; 887# ifndef _LIBC 888 transmem_block_t *transmem_list = NULL; 889# endif 890 891 __libc_lock_lock (lock); 892 893 inbuf = (const unsigned char *) result; 894 outbuf = freemem + sizeof (size_t); 895 896 malloc_count = 0; 897 while (1) 898 { 899 transmem_block_t *newmem; 900# ifdef _LIBC 901 size_t non_reversible; 902 int res; 903 904 if (freemem_size < sizeof (size_t)) 905 goto resize_freemem; 906 907 res = __gconv (domain->conv, 908 &inbuf, inbuf + resultlen, 909 &outbuf, 910 outbuf + freemem_size - sizeof (size_t), 911 &non_reversible); 912 913 if (res == __GCONV_OK || res == __GCONV_EMPTY_INPUT) 914 break; 915 916 if (res != __GCONV_FULL_OUTPUT) 917 { 918 __libc_lock_unlock (lock); 919 goto converted; 920 } 921 922 inbuf = result; 923# else 924# if HAVE_ICONV 925 const char *inptr = (const char *) inbuf; 926 size_t inleft = resultlen; 927 char *outptr = (char *) outbuf; 928 size_t outleft; 929 930 if (freemem_size < sizeof (size_t)) 931 goto resize_freemem; 932 933 outleft = freemem_size - sizeof (size_t); 934 if (iconv (domain->conv, 935 (ICONV_CONST char **) &inptr, &inleft, 936 &outptr, &outleft) 937 != (size_t) (-1)) 938 { 939 outbuf = (unsigned char *) outptr; 940 break; 941 } 942 if (errno != E2BIG) 943 { 944 __libc_lock_unlock (lock); 945 goto converted; 946 } 947# endif 948# endif 949 950 resize_freemem: 951 /* We must allocate a new buffer or resize the old one. */ 952 if (malloc_count > 0) 953 { 954 ++malloc_count; 955 freemem_size = malloc_count * INITIAL_BLOCK_SIZE; 956 newmem = (transmem_block_t *) realloc (transmem_list, 957 freemem_size); 958# ifdef _LIBC 959 if (newmem != NULL) 960 transmem_list = transmem_list->next; 961 else 962 { 963 struct transmem_list *old = transmem_list; 964 965 transmem_list = transmem_list->next; 966 free (old); 967 } 968# endif 969 } 970 else 971 { 972 malloc_count = 1; 973 freemem_size = INITIAL_BLOCK_SIZE; 974 newmem = (transmem_block_t *) malloc (freemem_size); 975 } 976 if (__builtin_expect (newmem == NULL, 0)) 977 { 978 freemem = NULL; 979 freemem_size = 0; 980 __libc_lock_unlock (lock); 981 goto converted; 982 } 983 984# ifdef _LIBC 985 /* Add the block to the list of blocks we have to free 986 at some point. */ 987 newmem->next = transmem_list; 988 transmem_list = newmem; 989 990 freemem = newmem->data; 991 freemem_size -= offsetof (struct transmem_list, data); 992# else 993 transmem_list = newmem; 994 freemem = newmem; 995# endif 996 997 outbuf = freemem + sizeof (size_t); 998 } 999 1000 /* We have now in our buffer a converted string. Put this 1001 into the table of conversions. */ 1002 *(size_t *) freemem = outbuf - freemem - sizeof (size_t); 1003 domain->conv_tab[act] = (char *) freemem; 1004 /* Shrink freemem, but keep it aligned. */ 1005 freemem_size -= outbuf - freemem; 1006 freemem = outbuf; 1007 freemem += freemem_size & (alignof (size_t) - 1); 1008 freemem_size = freemem_size & ~ (alignof (size_t) - 1); 1009 1010 __libc_lock_unlock (lock); 1011 } 1012 1013 /* Now domain->conv_tab[act] contains the translation of all 1014 the plural variants. */ 1015 result = domain->conv_tab[act] + sizeof (size_t); 1016 resultlen = *(size_t *) domain->conv_tab[act]; 1017 } 1018 1019 converted: 1020 /* The result string is converted. */ 1021 1022#endif /* _LIBC || HAVE_ICONV */ 1023 1024 *lengthp = resultlen; 1025 return result; 1026} 1027 1028 1029/* Look up a plural variant. */ 1030static char * 1031internal_function 1032plural_lookup (struct loaded_l10nfile *domain, unsigned long int n, 1033 const char *translation, size_t translation_len) 1034{ 1035 struct loaded_domain *domaindata = (struct loaded_domain *) domain->data; 1036 unsigned long int index; 1037 const char *p; 1038 1039 index = plural_eval (domaindata->plural, n); 1040 if (index >= domaindata->nplurals) 1041 /* This should never happen. It means the plural expression and the 1042 given maximum value do not match. */ 1043 index = 0; 1044 1045 /* Skip INDEX strings at TRANSLATION. */ 1046 p = translation; 1047 while (index-- > 0) 1048 { 1049#ifdef _LIBC 1050 p = __rawmemchr (p, '\0'); 1051#else 1052 p = strchr (p, '\0'); 1053#endif 1054 /* And skip over the NUL byte. */ 1055 p++; 1056 1057 if (p >= translation + translation_len) 1058 /* This should never happen. It means the plural expression 1059 evaluated to a value larger than the number of variants 1060 available for MSGID1. */ 1061 return (char *) translation; 1062 } 1063 return (char *) p; 1064} 1065 1066#ifndef _LIBC 1067/* Return string representation of locale CATEGORY. */ 1068static const char * 1069internal_function 1070category_to_name (int category) 1071{ 1072 const char *retval; 1073 1074 switch (category) 1075 { 1076#ifdef LC_COLLATE 1077 case LC_COLLATE: 1078 retval = "LC_COLLATE"; 1079 break; 1080#endif 1081#ifdef LC_CTYPE 1082 case LC_CTYPE: 1083 retval = "LC_CTYPE"; 1084 break; 1085#endif 1086#ifdef LC_MONETARY 1087 case LC_MONETARY: 1088 retval = "LC_MONETARY"; 1089 break; 1090#endif 1091#ifdef LC_NUMERIC 1092 case LC_NUMERIC: 1093 retval = "LC_NUMERIC"; 1094 break; 1095#endif 1096#ifdef LC_TIME 1097 case LC_TIME: 1098 retval = "LC_TIME"; 1099 break; 1100#endif 1101#ifdef LC_MESSAGES 1102 case LC_MESSAGES: 1103 retval = "LC_MESSAGES"; 1104 break; 1105#endif 1106#ifdef LC_RESPONSE 1107 case LC_RESPONSE: 1108 retval = "LC_RESPONSE"; 1109 break; 1110#endif 1111#ifdef LC_ALL 1112 case LC_ALL: 1113 /* This might not make sense but is perhaps better than any other 1114 value. */ 1115 retval = "LC_ALL"; 1116 break; 1117#endif 1118 default: 1119 /* If you have a better idea for a default value let me know. */ 1120 retval = "LC_XXX"; 1121 } 1122 1123 return retval; 1124} 1125#endif 1126 1127/* Guess value of current locale from value of the environment variables. */ 1128static const char * 1129internal_function 1130guess_category_value (int category, const char *categoryname) 1131{ 1132 const char *language; 1133 const char *retval; 1134 1135 /* The highest priority value is the `LANGUAGE' environment 1136 variable. But we don't use the value if the currently selected 1137 locale is the C locale. This is a GNU extension. */ 1138 language = getenv ("LANGUAGE"); 1139 if (language != NULL && language[0] == '\0') 1140 language = NULL; 1141 1142 /* We have to proceed with the POSIX methods of looking to `LC_ALL', 1143 `LC_xxx', and `LANG'. On some systems this can be done by the 1144 `setlocale' function itself. */ 1145#ifdef _LIBC 1146 retval = __current_locale_name (category); 1147#else 1148 retval = _nl_locale_name (category, categoryname); 1149#endif 1150 1151 /* Ignore LANGUAGE if the locale is set to "C" because 1152 1. "C" locale usually uses the ASCII encoding, and most international 1153 messages use non-ASCII characters. These characters get displayed 1154 as question marks (if using glibc's iconv()) or as invalid 8-bit 1155 characters (because other iconv()s refuse to convert most non-ASCII 1156 characters to ASCII). In any case, the output is ugly. 1157 2. The precise output of some programs in the "C" locale is specified 1158 by POSIX and should not depend on environment variables like 1159 "LANGUAGE". We allow such programs to use gettext(). */ 1160 return language != NULL && strcmp (retval, "C") != 0 ? language : retval; 1161} 1162 1163/* @@ begin of epilog @@ */ 1164 1165/* We don't want libintl.a to depend on any other library. So we 1166 avoid the non-standard function stpcpy. In GNU C Library this 1167 function is available, though. Also allow the symbol HAVE_STPCPY 1168 to be defined. */ 1169#if !_LIBC && !HAVE_STPCPY 1170static char * 1171stpcpy (char *dest, const char *src) 1172{ 1173 while ((*dest++ = *src++) != '\0') 1174 /* Do nothing. */ ; 1175 return dest - 1; 1176} 1177#endif 1178 1179#if !_LIBC && !HAVE_MEMPCPY 1180static void * 1181mempcpy (void *dest, const void *src, size_t n) 1182{ 1183 return (void *) ((char *) memcpy (dest, src, n) + n); 1184} 1185#endif 1186 1187 1188#ifdef _LIBC 1189/* If we want to free all resources we have to do some work at 1190 program's end. */ 1191libc_freeres_fn (free_mem) 1192{ 1193 void *old; 1194 1195 while (_nl_domain_bindings != NULL) 1196 { 1197 struct binding *oldp = _nl_domain_bindings; 1198 _nl_domain_bindings = _nl_domain_bindings->next; 1199 if (oldp->dirname != INTUSE(_nl_default_dirname)) 1200 /* Yes, this is a pointer comparison. */ 1201 free (oldp->dirname); 1202 free (oldp->codeset); 1203 free (oldp); 1204 } 1205 1206 if (_nl_current_default_domain != _nl_default_default_domain) 1207 /* Yes, again a pointer comparison. */ 1208 free ((char *) _nl_current_default_domain); 1209 1210 /* Remove the search tree with the known translations. */ 1211 __tdestroy (root, free); 1212 root = NULL; 1213 1214 while (transmem_list != NULL) 1215 { 1216 old = transmem_list; 1217 transmem_list = transmem_list->next; 1218 free (old); 1219 } 1220} 1221#endif 1222