diff options
Diffstat (limited to 'intl/localealias.c')
| -rw-r--r-- | intl/localealias.c | 115 |
1 files changed, 65 insertions, 50 deletions
diff --git a/intl/localealias.c b/intl/localealias.c index 91e7acc9c..7c4ce58f2 100644 --- a/intl/localealias.c +++ b/intl/localealias.c @@ -1,5 +1,5 @@ /* Handle aliases for locale names. - Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc. + 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 Library General Public License as published @@ -29,36 +29,45 @@ #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 #include <stdlib.h> - #include <string.h> -#if !HAVE_STRCHR && !defined _LIBC -# ifndef strchr -# define strchr index -# endif -#endif #include "gettextP.h" +#if ENABLE_RELOCATABLE +# include "relocatable.h" +#else +# define relocate(pathname) (pathname) +#endif + /* @@ end of prolog @@ */ #ifdef _LIBC @@ -71,6 +80,7 @@ char *alloca (); # 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> @@ -82,6 +92,15 @@ __libc_lock_define_initialized (static, lock); # 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 losing systems which don't have `alloca' we have to add some additional code emulating it. */ #ifdef HAVE_ALLOCA @@ -108,10 +127,14 @@ struct alias_map }; -static char *string_space; +#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; -static struct alias_map *map; +libc_freeres_ptr (static struct alias_map *map); static size_t nmap; static size_t maxmap; @@ -128,7 +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; @@ -137,6 +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; @@ -207,58 +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) 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 - */ - char buf[BUFSIZ]; + 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) + 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') @@ -267,7 +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') @@ -325,6 +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 @@ -358,19 +386,6 @@ extend_alias_table () } -#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; |