locale/nl_langinfo_l.c

   1 /* User interface for extracting locale-dependent parameters.
   2    Copyright (C) 1995-2013 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <langinfo.h>
  20 #include <locale.h>
  21 #include <errno.h>
  22 #include <stddef.h>
  23 #include "localeinfo.h"
  24
  25
  26 /* Return a string with the data for locale-dependent parameter ITEM.  */
  27
  28 char *
  29 __nl_langinfo_l (item, l)
  30      nl_item item;
  31      __locale_t l;
  32 {
  33   int category = _NL_ITEM_CATEGORY (item);
  34   unsigned int index = _NL_ITEM_INDEX (item);
  35   const struct __locale_data *data;
  36
  37   if (category < 0 || category == LC_ALL || category >= __LC_LAST)
  38     /* Bogus category: bogus item.  */
  39     return (char *) "";
  40
  41   /* Special case value for NL_LOCALE_NAME (category).
  42      This is not a real item index in the string table.  */
  43   if (index == _NL_ITEM_INDEX (_NL_LOCALE_NAME (category)))
  44     return (char *) l->__names[category];
  45
  46   data = l->__locales[category];
  47
  48   if (index >= data->nstrings)
  49     /* Bogus index for this category: bogus item.  */
  50     return (char *) "";
  51
  52   /* Return the string for the specified item.  */
  53   return (char *) data->values[index].string;
  54 }
  55 libc_hidden_def (__nl_langinfo_l)
  56 weak_alias (__nl_langinfo_l, nl_langinfo_l)