locale/libintl.h

   1 /* libgettext.h -- Message catalogs for internationalization.
   2 Copyright (C) 1995 Free Software Foundation, Inc.
   3 This file is part of the GNU C Library.
   4 Contributed by Ulrich Drepper.
   5 This file is derived from the file libgettext.h in the GNU gettext package.
   6
   7 The GNU C Library is free software; you can redistribute it and/or
   8 modify it under the terms of the GNU Library General Public License as
   9 published by the Free Software Foundation; either version 2 of the
  10 License, or (at your option) any later version.
  11
  12 The GNU C Library is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 Library General Public License for more details.
  16
  17 You should have received a copy of the GNU Library General Public
  18 License along with the GNU C Library; see the file COPYING.LIB.  If
  19 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef _LIBINTL_H
  23 #define _LIBINTL_H      1
  24 #include <features.h>
  25
  26 #include <locale.h>
  27
  28 #define __need_NULL
  29 #include <stddef.h>
  30
  31 /* We define an additional symbol to signal that we use the GNU
  32    implementation of gettext.  */
  33 #define __USE_GNU_GETTEXT 1
  34
  35 __BEGIN_DECLS
  36
  37 /* Look up MSGID in the current default message catalog for the current
  38    LC_MESSAGES locale.  If not found, returns MSGID itself (the default
  39    text).  */
  40 extern char *gettext __P ((const char *__msgid));
  41 extern char *__gettext __P ((const char *__msgid));
  42
  43 /* Look up MSGID in the DOMAINNAME message catalog for the current
  44    LC_MESSAGES locale.  */
  45 extern char *dgettext __P ((const char *__domainname, const char *__msgid));
  46 extern char *__dgettext __P ((const char *__domainname, const char *__msgid));
  47
  48 /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
  49    locale.  */
  50 extern char *dcgettext __P ((const char *__domainname, const char *__msgid,
  51                              int __category));
  52 extern char *__dcgettext __P ((const char *__domainname, const char *__msgid,
  53                                int __category));
  54
  55
  56 /* Set the current default message catalog to DOMAINNAME.
  57    If DOMAINNAME is null, return the current default.
  58    If DOMAINNAME is "", reset to the default of "messages".  */
  59 extern char *textdomain __P ((const char *__domainname));
  60 extern char *__textdomain __P ((const char *__domainname));
  61
  62 /* Specify that the DOMAINNAME message catalog will be found
  63    in DIRNAME rather than in the system locale data base.  */
  64 extern char *bindtextdomain __P ((const char *__domainname,
  65                                   const char *__dirname));
  66 extern char *__bindtextdomain __P ((const char *__domainname,
  67                                     const char *__dirname));
  68
  69
  70 /* Optimized version of the function above.  */
  71 #if defined __OPTIMIZED
  72 /* These must be a macro.  Inlined functions are useless because the
  73    `__builtin_constant_p' predicate in dcgettext would always return
  74    false.  */
  75
  76 # define gettext (msgid) dgettext (NULL, msgid)
  77
  78 # define dgettext (domainname, msgid)                                         \
  79   dcgettext (domainname, msgid, LC_MESSAGES)
  80
  81 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  82 #  define dcgettext(domainname, msgid, category)                              \
  83   (__extension__                                                              \
  84    ({                                                                         \
  85      char *result;                                                            \
  86      if (__builtin_constant_p (msgid))                                        \
  87        {                                                                      \
  88          extern int _nl_msg_cat_cntr;                                         \
  89          static char *__translation__;                                        \
  90          static int __catalog_counter__;                                      \
  91          if (! __translation__ || __catalog_counter__ != _nl_msg_cat_cntr)    \
  92            {                                                                  \
  93              __translation__ =                                                \
  94                __dcgettext ((domainname), (msgid), (category));               \
  95              __catalog_counter__ = _nl_msg_cat_cntr;                          \
  96            }                                                                  \
  97          result = __translation__;                                            \
  98        }                                                                      \
  99      else                                                                     \
 100        result = __dcgettext ((domainname), (msgid), (category));              \
 101      result;                                                                  \
 102     }))
 103 # endif
 104 #endif /* Optimizing. */
 105
 106
 107 __END_DECLS
 108
 109 #endif /* libintl.h */