intl/libintl.h

   1 /* libintl.h -- Message catalogs for internationalization.
   2    Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   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 not,
  21    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22    Boston, MA 02111-1307, USA.  */
  23
  24 #ifndef _LIBINTL_H
  25 #define _LIBINTL_H      1
  26
  27 #include <features.h>
  28
  29 /* We define an additional symbol to signal that we use the GNU
  30    implementation of gettext.  */
  31 #define __USE_GNU_GETTEXT 1
  32
  33 __BEGIN_DECLS
  34
  35 /* Look up MSGID in the current default message catalog for the current
  36    LC_MESSAGES locale.  If not found, returns MSGID itself (the default
  37    text).  */
  38 extern char *gettext __P ((__const char *__msgid));
  39 extern char *__gettext __P ((__const char *__msgid));
  40
  41 /* Look up MSGID in the DOMAINNAME message catalog for the current
  42    LC_MESSAGES locale.  */
  43 extern char *dgettext __P ((__const char *__domainname,
  44                             __const char *__msgid));
  45 extern char *__dgettext __P ((__const char *__domainname,
  46                               __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,
  51                              __const char *__msgid, int __category));
  52 extern char *__dcgettext __P ((__const char *__domainname,
  53                                __const char *__msgid, 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 __OPTIMIZE__
  72
  73 /* We need NULL for `gettext'.  */
  74 #define __need_NULL
  75 #include <stddef.h>
  76
  77 /* We need LC_MESSAGES for `dgettext'.  */
  78 # include <locale.h>
  79
  80 /* These must be macros.  Inlined functions are useless because the
  81    `__builtin_constant_p' predicate in dcgettext would always return
  82    false.  */
  83
  84 # define gettext(msgid) dgettext (NULL, msgid)
  85
  86 # define dgettext(domainname, msgid)                                          \
  87   dcgettext (domainname, msgid, LC_MESSAGES)
  88
  89 # if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  90 /* Variable defined in loadmsgcat.c which gets incremented every time a
  91    new catalog is loaded.  */
  92 extern int _nl_msg_cat_cntr;
  93
  94 #  define dcgettext(domainname, msgid, category)                              \
  95   (__extension__                                                              \
  96    ({                                                                         \
  97      char *__result;                                                          \
  98      if (__builtin_constant_p (msgid))                                        \
  99        {                                                                      \
 100          static char *__translation__;                                        \
 101          static int __catalog_counter__;                                      \
 102          if (! __translation__ || __catalog_counter__ != _nl_msg_cat_cntr)    \
 103            {                                                                  \
 104              __translation__ =                                                \
 105                __dcgettext ((domainname), (msgid), (category));               \
 106              __catalog_counter__ = _nl_msg_cat_cntr;                          \
 107            }                                                                  \
 108          __result = __translation__;                                          \
 109        }                                                                      \
 110      else                                                                     \
 111        __result = __dcgettext ((domainname), (msgid), (category));            \
 112      __result;                                                                \
 113     }))
 114 # endif
 115 #endif /* Optimizing. */
 116
 117
 118 __END_DECLS
 119
 120 #endif /* libintl.h */