intl/libintl.h

   1 /* libgettext.h -- Message catalogs for internationalization.
   2 Copyright (C) 1995 Free Software Foundation, Inc.
   3 Contributed by Ulrich Drepper.
   4 This file is derived from the file libgettext.h in the GNU gettext package.
   5
   6 This file is part of the GNU C Library.  Its master source is NOT part of
   7 the C library, however.  The master source lives in /gd/gnu/lib.
   8
   9 The GNU C Library is free software; you can redistribute it and/or
  10 modify it under the terms of the GNU Library General Public License as
  11 published by the Free Software Foundation; either version 2 of the
  12 License, or (at your option) any later version.
  13
  14 The GNU C Library is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17 Library General Public License for more details.
  18
  19 You should have received a copy of the GNU Library General Public
  20 License along with the GNU C Library; see the file COPYING.LIB.  If
  21 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  22 Cambridge, MA 02139, USA.  */
  23
  24 #ifndef _LIBINTL_H
  25 #define _LIBINTL_H      1
  26 #include <features.h>
  27
  28 #include <locale.h>
  29
  30 #define __need_NULL
  31 #include <stddef.h>
  32
  33 /* We define an additional symbol to signal that we use the GNU
  34    implementation of gettext.  */
  35 #define __USE_GNU_GETTEXT 1
  36
  37 __BEGIN_DECLS
  38
  39 /* Look up MSGID in the current default message catalog for the current
  40    LC_MESSAGES locale.  If not found, returns MSGID itself (the default
  41    text).  */
  42 extern char *gettext __P ((__const char *__msgid));
  43 extern char *__gettext __P ((__const char *__msgid));
  44
  45 /* Look up MSGID in the DOMAINNAME message catalog for the current
  46    LC_MESSAGES locale.  */
  47 extern char *dgettext __P ((__const char *__domainname,
  48                             __const char *__msgid));
  49 extern char *__dgettext __P ((__const char *__domainname,
  50                               __const char *__msgid));
  51
  52 /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
  53    locale.  */
  54 extern char *dcgettext __P ((__const char *__domainname,
  55                              __const char *__msgid, int __category));
  56 extern char *__dcgettext __P ((__const char *__domainname,
  57                                __const char *__msgid, int __category));
  58
  59
  60 /* Set the current default message catalog to DOMAINNAME.
  61    If DOMAINNAME is null, return the current default.
  62    If DOMAINNAME is "", reset to the default of "messages".  */
  63 extern char *textdomain __P ((__const char *__domainname));
  64 extern char *__textdomain __P ((__const char *__domainname));
  65
  66 /* Specify that the DOMAINNAME message catalog will be found
  67    in DIRNAME rather than in the system locale data base.  */
  68 extern char *bindtextdomain __P ((__const char *__domainname,
  69                                   __const char *__dirname));
  70 extern char *__bindtextdomain __P ((__const char *__domainname,
  71                                     __const char *__dirname));
  72
  73
  74 /* Optimized version of the function above.  */
  75 #if defined __OPTIMIZED
  76 /* These must be a macro.  Inlined functions are useless because the
  77    `__builtin_constant_p' predicate in dcgettext would always return
  78    false.  */
  79
  80 # define gettext(msgid) dgettext (NULL, msgid)
  81
  82 # define dgettext(domainname, msgid)                                          \
  83   dcgettext (domainname, msgid, LC_MESSAGES)
  84
  85 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  86 #  define dcgettext(domainname, msgid, category)                              \
  87   (__extension__                                                              \
  88    ({                                                                         \
  89      char *result;                                                            \
  90      if (__builtin_constant_p (msgid))                                        \
  91        {                                                                      \
  92          extern int _nl_msg_cat_cntr;                                         \
  93          static char *__translation__;                                        \
  94          static int __catalog_counter__;                                      \
  95          if (! __translation__ || __catalog_counter__ != _nl_msg_cat_cntr)    \
  96            {                                                                  \
  97              __translation__ =                                                \
  98                __dcgettext ((domainname), (msgid), (category));               \
  99              __catalog_counter__ = _nl_msg_cat_cntr;                          \
 100            }                                                                  \
 101          result = __translation__;                                            \
 102        }                                                                      \
 103      else                                                                     \
 104        result = __dcgettext ((domainname), (msgid), (category));              \
 105      result;                                                                  \
 106     }))
 107 # endif
 108 #endif /* Optimizing. */
 109
 110
 111 __END_DECLS
 112
 113 #endif /* libintl.h */