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Diffstat (limited to 'catgets/catgets.c')
| -rw-r--r-- | catgets/catgets.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/catgets/catgets.c b/catgets/catgets.c new file mode 100644 index 0000000000..ca0fdd693c --- /dev/null +++ b/catgets/catgets.c @@ -0,0 +1,163 @@ +/* Copyright (C) 1996 Free Software Foundation, Inc. +This file is part of the GNU C Library. +Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>. + +The GNU C Library 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 of the +License, or (at your option) any later version. + +The GNU C Library 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +Boston, MA 02111-1307, USA. */ + +#include <alloca.h> +#include <nl_types.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/mman.h> + +#include "catgetsinfo.h" + + +/* Open the catalog and return a descriptor for the catalog. */ +nl_catd +catopen (const char *cat_name, int flag) +{ + __nl_catd result; + const char *env_var; + + result = (__nl_catd) malloc (sizeof (__nl_catd)); + if (result == NULL) + /* We cannot get enough memory. */ + return (nl_catd) -1; + + result->status = closed; + + result->cat_name = strdup (cat_name); + if (result->cat_name == NULL) + { + free (result); + return (nl_catd) -1; + } + + if (strchr (cat_name, '/') == NULL) + { + if (flag == NL_CAT_LOCALE) + { + env_var = getenv ("LC_ALL"); + if (env_var == NULL) + { + env_var = getenv ("LC_MESSAGES"); + if (env_var == NULL) + { + env_var = getenv ("LANG"); + if (env_var == NULL) + env_var = "C"; + } + } + } + else + { + env_var = getenv ("LANG"); + if (env_var == NULL) + env_var = "C"; + } + + result->env_var = strdup (env_var); + if (result->env_var == NULL) + { + free ((void *) result->cat_name); + free ((void *) result); + return (nl_catd) -1; + } + + if (getenv ("NLSPATH") != NULL) + result->nlspath = strdup (getenv ("NLSPATH")); + else + result->nlspath = strdup (NLSPATH); + + if (result->nlspath == NULL) + { + free ((void *) result->cat_name); + free ((void *) result->env_var); + free ((void *) result); + return (nl_catd) -1; + } + } + else + { + result->env_var = NULL; + result->nlspath = NULL; + } + + return (nl_catd) result; +} + + +/* Return message from message catalog. */ +char * +catgets (nl_catd catalog_desc, int set, int message, const char *string) +{ + __nl_catd catalog; + size_t idx; + size_t cnt; + + /* Be generous if catalog which failed to be open is used. */ + if (catalog_desc == (nl_catd) -1 || ++set <= 0 || message < 0) + return (char *) string; + + catalog = (__nl_catd) catalog_desc; + + if (catalog->status == closed) + __open_catalog (catalog, 1); + + if (catalog->status == nonexisting) + return (char *) string; + + idx = ((set * message) % catalog->plane_size) * 3; + cnt = 0; + do + { + if (catalog->name_ptr[idx + 0] == (u_int32_t) set + && catalog->name_ptr[idx + 1] == (u_int32_t) message) + return (char *) &catalog->strings[catalog->name_ptr[idx + 2]]; + + idx += catalog->plane_size * 3; + } + while (++cnt < catalog->plane_depth); + + return (char *) string; +} + + +/* Return resources used for loaded message catalog. */ +int +catclose (nl_catd catalog_desc) +{ + __nl_catd catalog; + + catalog = (__nl_catd) catalog_desc; + + if (catalog->status == mmaped) + munmap ((void *) catalog->file_ptr, catalog->file_size); + else if (catalog->status == malloced) + free ((void *) catalog->file_ptr); + else if (catalog->status != closed && catalog->status != nonexisting) + return -1; + + if (catalog->nlspath) + free ((void *) catalog->nlspath); + if (catalog->env_var) + free ((void *) catalog->env_var); + free ((void *) catalog); + + return 0; +} |