diff options
Diffstat (limited to 'intl/localealias.c')
| -rw-r--r-- | intl/localealias.c | 271 |
1 files changed, 133 insertions, 138 deletions
diff --git a/intl/localealias.c b/intl/localealias.c index 833df0351a..5af5b5b6af 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 <drepper@gnu.ai.mit.edu>, 1995. + Copyright (C) 1995-1999, 2000-2001, 2003 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 <string.h> to provide a prototype for mempcpy(). + This must come before <config.h> because <config.h> may include + <features.h>, and once <features.h> has been included, it's too late. */ +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif #ifdef HAVE_CONFIG_H # include <config.h> @@ -22,55 +29,44 @@ #include <ctype.h> #include <stdio.h> +#if defined _LIBC || defined HAVE___FSETLOCKING +# include <stdio_ext.h> +#endif #include <sys/types.h> #ifdef __GNUC__ +# undef alloca # define alloca __builtin_alloca # define HAVE_ALLOCA 1 #else -# if defined HAVE_ALLOCA_H || defined _LIBC -# include <alloca.h> +# ifdef _MSC_VER +# include <malloc.h> +# define alloca _alloca # else -# ifdef _AIX - #pragma alloca +# if defined HAVE_ALLOCA_H || defined _LIBC +# include <alloca.h> # else -# ifndef alloca +# ifdef _AIX + #pragma alloca +# else +# ifndef alloca char *alloca (); +# endif # endif # endif # endif #endif -#if defined STDC_HEADERS || defined _LIBC -# include <stdlib.h> -#else -char *getenv (); -# ifdef HAVE_MALLOC_H -# include <malloc.h> -# else -void free (); -# endif -#endif +#include <stdlib.h> +#include <string.h> -#if defined HAVE_STRING_H || defined _LIBC -# ifndef _GNU_SOURCE -# define _GNU_SOURCE 1 -# endif -# include <string.h> +#include "gettextP.h" + +#if ENABLE_RELOCATABLE +# include "relocatable.h" #else -# include <strings.h> -# ifndef memcpy -# define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num) -# endif +# define relocate(pathname) (pathname) #endif -#if !HAVE_STRCHR && !defined _LIBC -# ifndef strchr -# define strchr index -# endif -#endif - -#include "gettext.h" -#include "gettextP.h" /* @@ end of prolog @@ */ @@ -80,8 +76,11 @@ 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 /* We need locking here since we can be called from different places. */ # include <bits/libc-lock.h> @@ -89,41 +88,36 @@ void free (); __libc_lock_define_initialized (static, lock); #endif +#ifndef internal_function +# define internal_function +#endif -/* For those loosing systems which don't have `alloca' we have to add +/* 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 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 || defined HAVE_FGETS_UNLOCKED +# undef fgets +# define fgets(buf, len, s) fgets_unlocked (buf, len, s) +#endif +#if defined _LIBC_REENTRANT || defined HAVE_FEOF_UNLOCKED +# undef feof +# define feof(s) feof_unlocked (s) +#endif struct alias_map @@ -133,18 +127,22 @@ 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)) internal_function; -static void extend_alias_table PARAMS ((void)); +static int extend_alias_table PARAMS ((void)); static int alias_compare PARAMS ((const struct alias_map *map1, const struct alias_map *map2)); @@ -153,7 +151,7 @@ const char * _nl_expand_alias (name) 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; @@ -162,6 +160,9 @@ _nl_expand_alias (name) __libc_lock_lock (lock); #endif + if (locale_alias_path == NULL) + locale_alias_path = LOCALE_ALIAS_PATH; + do { struct alias_map item; @@ -190,11 +191,12 @@ _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) @@ -217,16 +219,12 @@ read_alias_file (fname, fname_len) 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); @@ -235,60 +233,52 @@ read_alias_file (fname, fname_len) memcpy (&full_fname[fname_len], aliasfile, sizeof aliasfile); #endif - fp = fopen (full_fname, "r"); + fp = fopen (relocate (full_fname), "r"); + 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; + + 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); - } - 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') @@ -297,7 +287,7 @@ read_alias_file (fname, fname_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') @@ -312,7 +302,8 @@ read_alias_file (fname, fname_len) *cp++ = '\0'; if (nmap >= maxmap) - extend_alias_table (); + if (__builtin_expect (extend_alias_table (), 0)) + return added; alias_len = strlen (alias) + 1; value_len = strlen (value) + 1; @@ -325,10 +316,19 @@ read_alias_file (fname, fname_len) ? alias_len + value_len : 1024)); char *new_pool = (char *) realloc (string_space, new_size); if (new_pool == NULL) + return added; + + if (__builtin_expect (string_space != new_pool, 0)) { - FREE_BLOCKS (block_list); - return added; + 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; } @@ -345,6 +345,14 @@ read_alias_file (fname, fname_len) ++added; } } + + /* Possibly not the whole line fits into the buffer. Ignore + the rest of the line. */ + while (strchr (buf, '\n') == NULL) + 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; } /* Should we test for ferror()? I think we have to silently ignore @@ -355,12 +363,11 @@ read_alias_file (fname, fname_len) qsort (map, nmap, sizeof (struct alias_map), (int (*) PARAMS ((const void *, const void *))) alias_compare); - FREE_BLOCKS (block_list); return added; } -static void +static int extend_alias_table () { size_t new_size; @@ -371,26 +378,14 @@ 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; |