X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=intl%2Flocalealias.c;h=26122a01189c4ab44d1abce3ad5d5edc22db0d0c;hb=39d569661a3f4411d4501f9a8db9c7360ef5d568;hp=bca555a610fd1957108b6e6efbb7eb853a250d9d;hpb=1c467c80d7fce257119d1cc976575e2d3111b22c;p=lyx.git diff --git a/intl/localealias.c b/intl/localealias.c index bca555a610..26122a0118 100644 --- a/intl/localealias.c +++ b/intl/localealias.c @@ -1,20 +1,27 @@ /* Handle aliases for locale names. - Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. - Written by Ulrich Drepper , 1995. + Copyright (C) 1995-1999, 2000-2001, 2003, 2005 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +/* Tell glibc's to provide a prototype for mempcpy(). + This must come before because may include + , and once has been included, it's too late. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif #ifdef HAVE_CONFIG_H # include @@ -22,56 +29,45 @@ #include #include +#if defined _LIBC || defined HAVE___FSETLOCKING +# include +#endif #include #ifdef __GNUC__ +# undef alloca # define alloca __builtin_alloca # define HAVE_ALLOCA 1 #else -# if defined HAVE_ALLOCA_H || defined _LIBC -# include +# ifdef _MSC_VER +# include +# define alloca _alloca # else -# ifdef _AIX - #pragma alloca +# if defined HAVE_ALLOCA_H || defined _LIBC +# include # else -# ifndef alloca +# ifdef _AIX + #pragma alloca +# else +# ifndef alloca char *alloca (); +# endif # endif # endif # endif #endif -#if defined STDC_HEADERS || defined _LIBC -# include -#else -char *getenv (); -# ifdef HAVE_MALLOC_H -# include -# else -void free (); -# endif -#endif +#include +#include -#if defined HAVE_STRING_H || defined _LIBC -# ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -# endif -# include +#include "gettextP.h" + +#if ENABLE_RELOCATABLE +# include "relocatable.h" #else -# include -# ifndef memcpy -# define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) -# endif -#endif -#if !HAVE_STRCHR && !defined _LIBC -# ifndef strchr -# define strchr index -# endif +# define relocate(pathname) (pathname) #endif -#include "gettext.h" -#include "gettextP.h" - /* @@ end of prolog @@ */ #ifdef _LIBC @@ -80,50 +76,53 @@ void free (); file and the name space must not be polluted. */ # define strcasecmp __strcasecmp -# define mempcpy __mempcpy +# ifndef mempcpy +# define mempcpy __mempcpy +# endif # define HAVE_MEMPCPY 1 +# define HAVE___FSETLOCKING 1 +#endif -/* We need locking here since we can be called from different places. */ +/* Handle multi-threaded applications. */ +#ifdef _LIBC # include +#else +# include "lock.h" +#endif -__libc_lock_define_initialized (static, lock); +#ifndef internal_function +# define internal_function #endif +/* Some optimizations for glibc. */ +#ifdef _LIBC +# define FEOF(fp) feof_unlocked (fp) +# define FGETS(buf, n, fp) fgets_unlocked (buf, n, fp) +#else +# define FEOF(fp) feof (fp) +# define FGETS(buf, n, fp) fgets (buf, n, fp) +#endif -/* For those loosing systems which don't have `alloca' we have to add +/* For those losing systems which don't have `alloca' we have to add some additional code emulating it. */ #ifdef HAVE_ALLOCA -/* Nothing has to be done. */ -# define ADD_BLOCK(list, address) /* nothing */ -# define FREE_BLOCKS(list) /* nothing */ +# define freea(p) /* nothing */ #else -struct block_list -{ - void *address; - struct block_list *next; -}; -# define ADD_BLOCK(list, addr) \ - do { \ - struct block_list *newp = (struct block_list *) malloc (sizeof (*newp)); \ - /* If we cannot get a free block we cannot add the new element to \ - the list. */ \ - if (newp != NULL) { \ - newp->address = (addr); \ - newp->next = (list); \ - (list) = newp; \ - } \ - } while (0) -# define FREE_BLOCKS(list) \ - do { \ - while (list != NULL) { \ - struct block_list *old = list; \ - list = list->next; \ - free (old); \ - } \ - } while (0) -# undef alloca -# define alloca(size) (malloc (size)) -#endif /* have alloca */ +# define alloca(n) malloc (n) +# define freea(p) free (p) +#endif + +#if defined _LIBC_REENTRANT || HAVE_DECL_FGETS_UNLOCKED +# undef fgets +# define fgets(buf, len, s) fgets_unlocked (buf, len, s) +#endif +#if defined _LIBC_REENTRANT || HAVE_DECL_FEOF_UNLOCKED +# undef feof +# define feof(s) feof_unlocked (s) +#endif + + +__libc_lock_define_initialized (static, lock) struct alias_map @@ -133,34 +132,38 @@ struct alias_map }; -static char *string_space = NULL; -static size_t string_space_act = 0; -static size_t string_space_max = 0; -static struct alias_map *map; -static size_t nmap = 0; -static size_t maxmap = 0; +#ifndef _LIBC +# define libc_freeres_ptr(decl) decl +#endif + +libc_freeres_ptr (static char *string_space); +static size_t string_space_act; +static size_t string_space_max; +libc_freeres_ptr (static struct alias_map *map); +static size_t nmap; +static size_t maxmap; /* Prototypes for local functions. */ -static size_t read_alias_file PARAMS ((const char *fname, int fname_len)) +static size_t read_alias_file (const char *fname, int fname_len) internal_function; -static void extend_alias_table PARAMS ((void)); -static int alias_compare PARAMS ((const struct alias_map *map1, - const struct alias_map *map2)); +static int extend_alias_table (void); +static int alias_compare (const struct alias_map *map1, + const struct alias_map *map2); const char * -_nl_expand_alias (name) - const char *name; +_nl_expand_alias (const char *name) { - static const char *locale_alias_path = LOCALE_ALIAS_PATH; + static const char *locale_alias_path; struct alias_map *retval; const char *result = NULL; size_t added; -#ifdef _LIBC __libc_lock_lock (lock); -#endif + + if (locale_alias_path == NULL) + locale_alias_path = LOCALE_ALIAS_PATH; do { @@ -171,8 +174,8 @@ _nl_expand_alias (name) if (nmap > 0) retval = (struct alias_map *) bsearch (&item, map, nmap, sizeof (struct alias_map), - (int (*) PARAMS ((const void *, - const void *)) + (int (*) (const void *, + const void *) ) alias_compare); else retval = NULL; @@ -190,11 +193,12 @@ _nl_expand_alias (name) { const char *start; - while (locale_alias_path[0] == ':') + while (locale_alias_path[0] == PATH_SEPARATOR) ++locale_alias_path; start = locale_alias_path; - while (locale_alias_path[0] != '\0' && locale_alias_path[0] != ':') + while (locale_alias_path[0] != '\0' + && locale_alias_path[0] != PATH_SEPARATOR) ++locale_alias_path; if (start < locale_alias_path) @@ -203,9 +207,7 @@ _nl_expand_alias (name) } while (added != 0); -#ifdef _LIBC __libc_lock_unlock (lock); -#endif return result; } @@ -213,20 +215,14 @@ _nl_expand_alias (name) static size_t internal_function -read_alias_file (fname, fname_len) - const char *fname; - int fname_len; +read_alias_file (const char *fname, int fname_len) { -#ifndef HAVE_ALLOCA - struct block_list *block_list = NULL; -#endif FILE *fp; char *full_fname; size_t added; static const char aliasfile[] = "/locale.alias"; full_fname = (char *) alloca (fname_len + sizeof aliasfile); - ADD_BLOCK (block_list, full_fname); #ifdef HAVE_MEMPCPY mempcpy (mempcpy (full_fname, fname, fname_len), aliasfile, sizeof aliasfile); @@ -235,69 +231,68 @@ read_alias_file (fname, fname_len) memcpy (&full_fname[fname_len], aliasfile, sizeof aliasfile); #endif - fp = fopen (full_fname, "r"); +#ifdef _LIBC + /* Note the file is opened with cancellation in the I/O functions + disabled. */ + fp = fopen (relocate (full_fname), "rc"); +#else + fp = fopen (relocate (full_fname), "r"); +#endif + freea (full_fname); if (fp == NULL) - { - FREE_BLOCKS (block_list); - return 0; - } + return 0; + +#ifdef HAVE___FSETLOCKING + /* No threads present. */ + __fsetlocking (fp, FSETLOCKING_BYCALLER); +#endif added = 0; - while (!feof (fp)) + while (!FEOF (fp)) { /* It is a reasonable approach to use a fix buffer here because a) we are only interested in the first two fields b) these fields must be usable as file names and so must not be that long - */ - unsigned char buf[BUFSIZ]; - unsigned char *alias; - unsigned char *value; - unsigned char *cp; - - if (fgets (buf, sizeof buf, fp) == NULL) + We avoid a multi-kilobyte buffer here since this would use up + stack space which we might not have if the program ran out of + memory. */ + char buf[400]; + char *alias; + char *value; + char *cp; + int complete_line; + + if (FGETS (buf, sizeof buf, fp) == NULL) /* EOF reached. */ break; - /* Possibly not the whole line fits into the buffer. Ignore - the rest of the line. */ - if (strchr (buf, '\n') == NULL) - { - char altbuf[BUFSIZ]; - do - if (fgets (altbuf, sizeof altbuf, fp) == NULL) - /* Make sure the inner loop will be left. The outer loop - will exit at the `feof' test. */ - break; - while (strchr (altbuf, '\n') == NULL); - } + /* Determine whether the line is complete. */ + complete_line = strchr (buf, '\n') != NULL; cp = buf; /* Ignore leading white space. */ - while (isspace (cp[0])) + while (isspace ((unsigned char) cp[0])) ++cp; /* A leading '#' signals a comment line. */ if (cp[0] != '\0' && cp[0] != '#') { alias = cp++; - while (cp[0] != '\0' && !isspace (cp[0])) + while (cp[0] != '\0' && !isspace ((unsigned char) cp[0])) ++cp; /* Terminate alias name. */ if (cp[0] != '\0') *cp++ = '\0'; /* Now look for the beginning of the value. */ - while (isspace (cp[0])) + while (isspace ((unsigned char) cp[0])) ++cp; if (cp[0] != '\0') { - size_t alias_len; - size_t value_len; - value = cp++; - while (cp[0] != '\0' && !isspace (cp[0])) + while (cp[0] != '\0' && !isspace ((unsigned char) cp[0])) ++cp; /* Terminate value. */ if (cp[0] == '\n') @@ -311,56 +306,88 @@ read_alias_file (fname, fname_len) else if (cp[0] != '\0') *cp++ = '\0'; - if (nmap >= maxmap) - extend_alias_table (); +#ifdef IN_LIBGLOCALE + /* glibc's locale.alias contains entries for ja_JP and ko_KR + that make it impossible to use a Japanese or Korean UTF-8 + locale under the name "ja_JP" or "ko_KR". Ignore these + entries. */ + if (strchr (alias, '_') == NULL) +#endif + { + size_t alias_len; + size_t value_len; - alias_len = strlen (alias) + 1; - value_len = strlen (value) + 1; + if (nmap >= maxmap) + if (__builtin_expect (extend_alias_table (), 0)) + goto out; - if (string_space_act + alias_len + value_len > string_space_max) - { - /* Increase size of memory pool. */ - size_t new_size = (string_space_max - + (alias_len + value_len > 1024 - ? alias_len + value_len : 1024)); - char *new_pool = (char *) realloc (string_space, new_size); - if (new_pool == NULL) + alias_len = strlen (alias) + 1; + value_len = strlen (value) + 1; + + if (string_space_act + alias_len + value_len > string_space_max) { - FREE_BLOCKS (block_list); - return added; + /* Increase size of memory pool. */ + size_t new_size = (string_space_max + + (alias_len + value_len > 1024 + ? alias_len + value_len : 1024)); + char *new_pool = (char *) realloc (string_space, new_size); + if (new_pool == NULL) + goto out; + + if (__builtin_expect (string_space != new_pool, 0)) + { + size_t i; + + for (i = 0; i < nmap; i++) + { + map[i].alias += new_pool - string_space; + map[i].value += new_pool - string_space; + } + } + + string_space = new_pool; + string_space_max = new_size; } - string_space = new_pool; - string_space_max = new_size; - } - map[nmap].alias = memcpy (&string_space[string_space_act], - alias, alias_len); - string_space_act += alias_len; + map[nmap].alias = memcpy (&string_space[string_space_act], + alias, alias_len); + string_space_act += alias_len; - map[nmap].value = memcpy (&string_space[string_space_act], - value, value_len); - string_space_act += value_len; + map[nmap].value = memcpy (&string_space[string_space_act], + value, value_len); + string_space_act += value_len; - ++nmap; - ++added; + ++nmap; + ++added; + } } } + + /* Possibly not the whole line fits into the buffer. Ignore + the rest of the line. */ + if (! complete_line) + do + if (FGETS (buf, sizeof buf, fp) == NULL) + /* Make sure the inner loop will be left. The outer loop + will exit at the `feof' test. */ + break; + while (strchr (buf, '\n') == NULL); } + out: /* Should we test for ferror()? I think we have to silently ignore errors. --drepper */ fclose (fp); if (added > 0) qsort (map, nmap, sizeof (struct alias_map), - (int (*) PARAMS ((const void *, const void *))) alias_compare); + (int (*) (const void *, const void *)) alias_compare); - FREE_BLOCKS (block_list); return added; } -static void +static int extend_alias_table () { size_t new_size; @@ -371,30 +398,16 @@ extend_alias_table () * sizeof (struct alias_map))); if (new_map == NULL) /* Simply don't extend: we don't have any more core. */ - return; + return -1; map = new_map; maxmap = new_size; + return 0; } -#ifdef _LIBC -static void __attribute__ ((unused)) -free_mem (void) -{ - if (string_space != NULL) - free (string_space); - if (map != NULL) - free (map); -} -text_set_element (__libc_subfreeres, free_mem); -#endif - - static int -alias_compare (map1, map2) - const struct alias_map *map1; - const struct alias_map *map2; +alias_compare (const struct alias_map *map1, const struct alias_map *map2) { #if defined _LIBC || defined HAVE_STRCASECMP return strcasecmp (map1->alias, map2->alias);