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glibc  2.9
nl_langinfo_l.c
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00001 /* User interface for extracting locale-dependent parameters.
00002    Copyright (C) 1995-1997,1999-2002,2005,2007 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <langinfo.h>
00021 #include <locale.h>
00022 #include <errno.h>
00023 #include <stddef.h>
00024 #include "localeinfo.h"
00025 
00026 
00027 /* Return a string with the data for locale-dependent parameter ITEM.  */
00028 
00029 char *
00030 __nl_langinfo_l (item, l)
00031      nl_item item;
00032      __locale_t l;
00033 {
00034   int category = _NL_ITEM_CATEGORY (item);
00035   unsigned int index = _NL_ITEM_INDEX (item);
00036   const struct locale_data *data;
00037 
00038   if (category < 0 || category == LC_ALL || category >= __LC_LAST)
00039     /* Bogus category: bogus item.  */
00040     return (char *) "";
00041 
00042   /* Special case value for NL_LOCALE_NAME (category).
00043      This is not a real item index in the string table.  */
00044   if (index == _NL_ITEM_INDEX (_NL_LOCALE_NAME (category)))
00045     return (char *) l->__names[category];
00046 
00047   data = l->__locales[category];
00048 
00049   if (index >= data->nstrings)
00050     /* Bogus index for this category: bogus item.  */
00051     return (char *) "";
00052 
00053   /* Return the string for the specified item.  */
00054   return (char *) data->values[index].string;
00055 }
00056 libc_hidden_def (__nl_langinfo_l)
00057 weak_alias (__nl_langinfo_l, nl_langinfo_l)