locale/nl_langinfo_l.c

   1 /* User interface for extracting locale-dependent parameters.
   2    Copyright (C) 1995-1997,1999-2002,2005,2007 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <langinfo.h>
  21 #include <locale.h>
  22 #include <errno.h>
  23 #include <stddef.h>
  24 #include "localeinfo.h"
  25
  26
  27 /* Return a string with the data for locale-dependent parameter ITEM.  */
  28
  29 char *
  30 __nl_langinfo_l (item, l)
  31      nl_item item;
  32      __locale_t l;
  33 {
  34   int category = _NL_ITEM_CATEGORY (item);
  35   unsigned int index = _NL_ITEM_INDEX (item);
  36   const struct locale_data *data;
  37
  38   if (category < 0 || category == LC_ALL || category >= __LC_LAST)
  39     /* Bogus category: bogus item.  */
  40     return (char *) "";
  41
  42   /* Special case value for NL_LOCALE_NAME (category).
  43      This is not a real item index in the string table.  */
  44   if (index == _NL_ITEM_INDEX (_NL_LOCALE_NAME (category)))
  45     return (char *) l->__names[category];
  46
  47   data = l->__locales[category];
  48
  49   if (index >= data->nstrings)
  50     /* Bogus index for this category: bogus item.  */
  51     return (char *) "";
  52
  53   /* Return the string for the specified item.  */
  54   return (char *) data->values[index].string;
  55 }
  56 libc_hidden_def (__nl_langinfo_l)
  57 weak_alias (__nl_langinfo_l, nl_langinfo_l)