root/maint/gnulib/lib/unicase/locale-language.c

/* */

DEFINITIONS

1. uc_locale_language

   1 /* Language code of current locale.
   2    Copyright (C) 2009-2021 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2009.
   4 
   5    This file is free software.
   6    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
   7    You can redistribute it and/or modify it under either
   8      - the terms of the GNU Lesser General Public License as published
   9        by the Free Software Foundation; either version 3, or (at your
  10        option) any later version, or
  11      - the terms of the GNU General Public License as published by the
  12        Free Software Foundation; either version 2, or (at your option)
  13        any later version, or
  14      - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
  15 
  16    This file is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License and the GNU General Public License
  20    for more details.
  21 
  22    You should have received a copy of the GNU Lesser General Public
  23    License and of the GNU General Public License along with this
  24    program.  If not, see <https://www.gnu.org/licenses/>.  */
  25 
  26 #include <config.h>
  27 
  28 /* Specification.  */
  29 #include "unicase.h"
  30 
  31 #include <locale.h>
  32 #include <string.h>
  33 
  34 #include "localename.h"
  35 
  36 #include "unicase/locale-languages.h"
  37 
  38 const char *
  39 uc_locale_language (void)
     /*  */
  40 {
  41   const char *locale_name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
  42   const char *p;
  43 
  44   /* Find the end of the language portion.  */
  45   p = locale_name;
  46   while (*p != '\0' && *p != '_' && *p != '.' && *p != '@')
  47     p++;
  48 
  49   /* Return a statically allocated pointer to the language portion, so that the
  50      caller of this function does not need to free() the result.
  51      We could use a dynamically built unification table.  But given that the
  52      set of possible languages is small, it is easier (and excludes ENOMEM
  53      error conditions) to allocate the unification table statically.  */
  54   if (p != locale_name)
  55     {
  56       const char *language =
  57         uc_locale_languages_lookup (locale_name, p - locale_name);
  58       if (language != NULL)
  59         return language;
  60     }
  61 
  62   return "";
  63 }

/* */