glibc/intl/libintl.h

/* libgettext.h -- Message catalogs for internationalization.
Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper.
This file is derived from the file libgettext.h in the GNU gettext package.

The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.

The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB.  If
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef _LIBINTL_H
#define _LIBINTL_H	1
#include <features.h>

#include <locale.h>

#define __need_NULL
#include <stddef.h>

/* We define an additional symbol to signal that we use the GNU
   implementation of gettext.  */
#define __USE_GNU_GETTEXT 1

__BEGIN_DECLS

/* Look up MSGID in the current default message catalog for the current
   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
   text).  */
extern char *gettext __P ((__const char *__msgid));
extern char *__gettext __P ((__const char *__msgid));

/* Look up MSGID in the DOMAINNAME message catalog for the current
   LC_MESSAGES locale.  */
extern char *dgettext __P ((__const char *__domainname,
			    __const char *__msgid));
extern char *__dgettext __P ((__const char *__domainname,
			      __const char *__msgid));

/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
   locale.  */
extern char *dcgettext __P ((__const char *__domainname,
			     __const char *__msgid, int __category));
extern char *__dcgettext __P ((__const char *__domainname,
			       __const char *__msgid, int __category));


/* Set the current default message catalog to DOMAINNAME.
   If DOMAINNAME is null, return the current default.
   If DOMAINNAME is "", reset to the default of "messages".  */
extern char *textdomain __P ((__const char *__domainname));
extern char *__textdomain __P ((__const char *__domainname));

/* Specify that the DOMAINNAME message catalog will be found
   in DIRNAME rather than in the system locale data base.  */
extern char *bindtextdomain __P ((__const char *__domainname,
				  __const char *__dirname));
extern char *__bindtextdomain __P ((__const char *__domainname,
				    __const char *__dirname));


/* Optimized version of the function above.  */
#if defined __OPTIMIZED
/* These must be a macro.  Inlined functions are useless because the
   `__builtin_constant_p' predicate in dcgettext would always return
   false.  */

# define gettext(msgid) dgettext (NULL, msgid)

# define dgettext(domainname, msgid)					      \
  dcgettext (domainname, msgid, LC_MESSAGES)

# if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
#  define dcgettext(domainname, msgid, category)			      \
  (__extension__							      \
   ({									      \
     char *result;							      \
     if (__builtin_constant_p (msgid))					      \
       {								      \
	 extern int _nl_msg_cat_cntr;					      \
	 static char *__translation__;					      \
	 static int __catalog_counter__;				      \
	 if (! __translation__ || __catalog_counter__ != _nl_msg_cat_cntr)    \
	   {								      \
	     __translation__ =						      \
	       __dcgettext ((domainname), (msgid), (category));		      \
	     __catalog_counter__ = _nl_msg_cat_cntr;			      \
	   }								      \
	 result = __translation__;					      \
       }								      \
     else								      \
       result = __dcgettext ((domainname), (msgid), (category));	      \
     result;								      \
    }))
# endif
#endif /* Optimizing. */


__END_DECLS

#endif /* libintl.h */