intl/libgettext.h

   1 /* Message catalogs for internationalization.
   2    Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Because on some systems (e.g. Solaris) we sometimes have to include
  19    the systems libintl.h as well as this file we have more complex
  20    include protection above.  But the systems header might perhaps also
  21    define _LIBINTL_H and therefore we have to protect the definition here.  */
  22
  23 #if !defined (_LIBINTL_H) || !defined (_LIBGETTEXT_H)
  24 #if !defined (_LIBINTL_H)
  25 # define _LIBINTL_H     1
  26 #endif
  27 #define _LIBGETTEXT_H   1
  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 #include <sys/types.h>
  34
  35 #if HAVE_LOCALE_H
  36 # include <locale.h>
  37 #endif
  38
  39
  40 #ifdef __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 /* @@ end of prolog @@ */
  45
  46 #ifndef PARAMS
  47 # if __STDC__
  48 #  define PARAMS(args) args
  49 # else
  50 #  define PARAMS(args) ()
  51 # endif
  52 #endif
  53
  54 #ifndef NULL
  55 # if !defined __cplusplus || defined __GNUC__
  56 #  define NULL ((void *) 0)
  57 # else
  58 #  define NULL (0)
  59 # endif
  60 #endif
  61
  62 #if !HAVE_LC_MESSAGES
  63 /* This value determines the behaviour of the gettext() and dgettext()
  64    function.  But some system does not have this defined.  Define it
  65    to a default value.  */
  66 # define LC_MESSAGES (-1)
  67 #endif
  68
  69
  70 /* Declarations for gettext-using-catgets interface.  Derived from
  71    Jim Meyering's libintl.h.  */
  72 struct _msg_ent
  73 {
  74   const char *_msg;
  75   int _msg_number;
  76 };
  77
  78
  79 #if HAVE_CATGETS
  80 /* These two variables are defined in the automatically by po-to-tbl.sed
  81    generated file `cat-id-tbl.c'.  */
  82 extern const struct _msg_ent _msg_tbl[];
  83 extern int _msg_tbl_length;
  84 #endif
  85
  86
  87 /* For automatical extraction of messages sometimes no real
  88    translation is needed.  Instead the string itself is the result.  */
  89 #define gettext_noop(Str) (Str)
  90
  91 /* Look up MSGID in the current default message catalog for the current
  92    LC_MESSAGES locale.  If not found, returns MSGID itself (the default
  93    text).  */
  94 extern char *gettext PARAMS ((const char *__msgid));
  95 extern char *gettext__ PARAMS ((const char *__msgid));
  96
  97 /* Look up MSGID in the DOMAINNAME message catalog for the current
  98    LC_MESSAGES locale.  */
  99 extern char *dgettext PARAMS ((const char *__domainname, const char *__msgid));
 100 extern char *dgettext__ PARAMS ((const char *__domainname,
 101                                  const char *__msgid));
 102
 103 /* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
 104    locale.  */
 105 extern char *dcgettext PARAMS ((const char *__domainname, const char *__msgid,
 106                                 int __category));
 107 extern char *dcgettext__ PARAMS ((const char *__domainname,
 108                                   const char *__msgid, int __category));
 109
 110
 111 /* Set the current default message catalog to DOMAINNAME.
 112    If DOMAINNAME is null, return the current default.
 113    If DOMAINNAME is "", reset to the default of "messages".  */
 114 extern char *textdomain PARAMS ((const char *__domainname));
 115 extern char *textdomain__ PARAMS ((const char *__domainname));
 116
 117 /* Specify that the DOMAINNAME message catalog will be found
 118    in DIRNAME rather than in the system locale data base.  */
 119 extern char *bindtextdomain PARAMS ((const char *__domainname,
 120                                   const char *__dirname));
 121 extern char *bindtextdomain__ PARAMS ((const char *__domainname,
 122                                     const char *__dirname));
 123
 124 #if ENABLE_NLS
 125
 126 /* Solaris 2.3 has the gettext function but dcgettext is missing.
 127    So we omit this optimization for Solaris 2.3.  BTW, Solaris 2.4
 128    has dcgettext.  */
 129 # if !HAVE_CATGETS && (!HAVE_GETTEXT || HAVE_DCGETTEXT)
 130
 131 #  define gettext(Msgid)                                                      \
 132      dgettext (NULL, Msgid)
 133
 134 #  define dgettext(Domainname, Msgid)                                         \
 135      dcgettext (Domainname, Msgid, LC_MESSAGES)
 136
 137 #  if defined __GNUC__ && __GNUC__ == 2 && __GNUC_MINOR__ >= 7
 138 /* This global variable is defined in loadmsgcat.c.  We need a sign,
 139    whether a new catalog was loaded, which can be associated with all
 140    translations.  */
 141 extern int _nl_msg_cat_cntr;
 142
 143 #   define dcgettext(Domainname, Msgid, Category)                             \
 144   (__extension__                                                              \
 145    ({                                                                         \
 146      char *__result;                                                          \
 147      if (__builtin_constant_p (Msgid))                                        \
 148        {                                                                      \
 149          static char *__translation__;                                        \
 150          static int __catalog_counter__;                                      \
 151          if (! __translation__ || __catalog_counter__ != _nl_msg_cat_cntr)    \
 152            {                                                                  \
 153              __translation__ =                                                \
 154                dcgettext__ (Domainname, Msgid, Category);                     \
 155              __catalog_counter__ = _nl_msg_cat_cntr;                          \
 156            }                                                                  \
 157          __result = __translation__;                                          \
 158        }                                                                      \
 159      else                                                                     \
 160        __result = dcgettext__ (Domainname, Msgid, Category);                  \
 161      __result;                                                                \
 162     }))
 163 #  endif
 164 # endif
 165
 166 #else
 167
 168 # define gettext(Msgid) (Msgid)
 169 # define dgettext(Domainname, Msgid) (Msgid)
 170 # define dcgettext(Domainname, Msgid, Category) (Msgid)
 171 # define textdomain(Domainname) while (0) /* nothing */
 172 # define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
 173
 174 #endif
 175
 176 /* @@ begin of epilog @@ */
 177
 178 #ifdef __cplusplus
 179 }
 180 #endif
 181
 182 #endif