diff options
Diffstat (limited to 'intl/localealias.c')
| -rw-r--r-- | intl/localealias.c | 140 |
1 files changed, 93 insertions, 47 deletions
diff --git a/intl/localealias.c b/intl/localealias.c index 00d91941b9..bca555a610 100644 --- a/intl/localealias.c +++ b/intl/localealias.c @@ -1,5 +1,5 @@ -/* Handle aliases for locale names - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. +/* 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. This program is free software; you can redistribute it and/or modify @@ -79,6 +79,14 @@ void free (); because some ANSI C functions will require linking with this object file and the name space must not be polluted. */ # define strcasecmp __strcasecmp + +# define mempcpy __mempcpy +# define HAVE_MEMPCPY 1 + +/* We need locking here since we can be called from different places. */ +# include <bits/libc-lock.h> + +__libc_lock_define_initialized (static, lock); #endif @@ -125,13 +133,17 @@ 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; /* Prototypes for local functions. */ -static size_t read_alias_file PARAMS ((const char *fname, int fname_len)); +static size_t read_alias_file PARAMS ((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)); @@ -143,8 +155,13 @@ _nl_expand_alias (name) { static const char *locale_alias_path = LOCALE_ALIAS_PATH; struct alias_map *retval; + const char *result = NULL; size_t added; +#ifdef _LIBC + __libc_lock_lock (lock); +#endif + do { struct alias_map item; @@ -162,7 +179,10 @@ _nl_expand_alias (name) /* We really found an alias. Return the value. */ if (retval != NULL) - return retval->value; + { + result = retval->value; + break; + } /* Perhaps we can find another alias file. */ added = 0; @@ -183,11 +203,16 @@ _nl_expand_alias (name) } while (added != 0); - return NULL; +#ifdef _LIBC + __libc_lock_unlock (lock); +#endif + + return result; } static size_t +internal_function read_alias_file (fname, fname_len) const char *fname; int fname_len; @@ -202,8 +227,13 @@ read_alias_file (fname, fname_len) 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); +#else memcpy (full_fname, fname, fname_len); memcpy (&full_fname[fname_len], aliasfile, sizeof aliasfile); +#endif fp = fopen (full_fname, "r"); if (fp == NULL) @@ -220,15 +250,28 @@ read_alias_file (fname, fname_len) b) these fields must be usable as file names and so must not be that long */ - char buf[BUFSIZ]; - char *alias; - char *value; - char *cp; + unsigned char buf[BUFSIZ]; + unsigned char *alias; + unsigned char *value; + unsigned char *cp; - if (fgets (buf, BUFSIZ, 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])) @@ -250,8 +293,8 @@ read_alias_file (fname, fname_len) if (cp[0] != '\0') { - char *tp; - size_t len; + size_t alias_len; + size_t value_len; value = cp++; while (cp[0] != '\0' && !isspace (cp[0])) @@ -271,42 +314,37 @@ read_alias_file (fname, fname_len) if (nmap >= maxmap) extend_alias_table (); - /* We cannot depend on strdup available in the libc. Sigh! */ - len = strlen (alias) + 1; - tp = (char *) malloc (len); - if (tp == NULL) - { - FREE_BLOCKS (block_list); - return added; - } - memcpy (tp, alias, len); - map[nmap].alias = tp; + alias_len = strlen (alias) + 1; + value_len = strlen (value) + 1; - len = strlen (value) + 1; - tp = (char *) malloc (len); - if (tp == NULL) + 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) + { + FREE_BLOCKS (block_list); + return added; + } + string_space = new_pool; + string_space_max = new_size; } - memcpy (tp, value, len); - map[nmap].value = tp; + + 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; ++nmap; ++added; } } - - /* Possibly not the whole line fits into the buffer. Ignore - the rest of the line. */ - while (strchr (cp, '\n') == NULL) - { - cp = buf; - if (fgets (buf, BUFSIZ, fp) == NULL) - /* Make sure the inner loop will be left. The outer loop - will exit at the `feof' test. */ - *cp = '\n'; - } } /* Should we test for ferror()? I think we have to silently ignore @@ -329,22 +367,30 @@ extend_alias_table () struct alias_map *new_map; new_size = maxmap == 0 ? 100 : 2 * maxmap; - new_map = (struct alias_map *) malloc (new_size - * sizeof (struct alias_map)); + new_map = (struct alias_map *) realloc (map, (new_size + * sizeof (struct alias_map))); if (new_map == NULL) /* Simply don't extend: we don't have any more core. */ return; - memcpy (new_map, map, nmap * sizeof (struct alias_map)); - - if (maxmap != 0) - free (map); - map = new_map; maxmap = new_size; } +#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; |