1/* Message catalogs for internationalization.
2   Copyright (C) 1995-1997, 2000-2003 Free Software Foundation, Inc.
3
4   This program is free software; you can redistribute it and/or modify it
5   under the terms of the GNU Library General Public License as published
6   by 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 GNU
12   Library General Public License for more details.
13
14   You should have received a copy of the GNU Library General Public
15   License along with this program; if not, write to the Free Software
16   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
17   USA.  */
18
19#ifndef _LIBINTL_H
20#define _LIBINTL_H	1
21
22#include <locale.h>
23
24/* The LC_MESSAGES locale category is the category used by the functions
25   gettext() and dgettext().  It is specified in POSIX, but not in ANSI C.
26   On systems that don't define it, use an arbitrary value instead.
27   On Solaris, <locale.h> defines __LOCALE_H (or _LOCALE_H in Solaris 2.5)
28   then includes <libintl.h> (i.e. this file!) and then only defines
29   LC_MESSAGES.  To avoid a redefinition warning, don't define LC_MESSAGES
30   in this case.  */
31#if !defined LC_MESSAGES && !(defined __LOCALE_H || (defined _LOCALE_H && defined __sun))
32# define LC_MESSAGES 1729
33#endif
34
35/* We define an additional symbol to signal that we use the GNU
36   implementation of gettext.  */
37#define __USE_GNU_GETTEXT 1
38
39/* Provide information about the supported file formats.  Returns the
40   maximum minor revision number supported for a given major revision.  */
41#define __GNU_GETTEXT_SUPPORTED_REVISION(major) \
42  ((major) == 0 ? 1 : -1)
43
44/* Resolve a platform specific conflict on DJGPP.  GNU gettext takes
45   precedence over _conio_gettext.  */
46#ifdef __DJGPP__
47# undef gettext
48#endif
49
50/* Use _INTL_PARAMS, not PARAMS, in order to avoid clashes with identifiers
51   used by programs.  Similarly, test __PROTOTYPES, not PROTOTYPES.  */
52#ifndef _INTL_PARAMS
53# if __STDC__ || defined __GNUC__ || defined __SUNPRO_C || defined __cplusplus || __PROTOTYPES
54#  define _INTL_PARAMS(args) args
55# else
56#  define _INTL_PARAMS(args) ()
57# endif
58#endif
59
60#ifdef __cplusplus
61extern "C" {
62#endif
63
64
65/* We redirect the functions to those prefixed with "libintl_".  This is
66   necessary, because some systems define gettext/textdomain/... in the C
67   library (namely, Solaris 2.4 and newer, and GNU libc 2.0 and newer).
68   If we used the unprefixed names, there would be cases where the
69   definition in the C library would override the one in the libintl.so
70   shared library.  Recall that on ELF systems, the symbols are looked
71   up in the following order:
72     1. in the executable,
73     2. in the shared libraries specified on the link command line, in order,
74     3. in the dependencies of the shared libraries specified on the link
75        command line,
76     4. in the dlopen()ed shared libraries, in the order in which they were
77        dlopen()ed.
78   The definition in the C library would override the one in libintl.so if
79   either
80     * -lc is given on the link command line and -lintl isn't, or
81     * -lc is given on the link command line before -lintl, or
82     * libintl.so is a dependency of a dlopen()ed shared library but not
83       linked to the executable at link time.
84   Since Solaris gettext() behaves differently than GNU gettext(), this
85   would be unacceptable.
86
87   The redirection happens by default through macros in C, so that &gettext
88   is independent of the compilation unit, but through inline functions in
89   C++, in order not to interfere with the name mangling of class fields or
90   class methods called 'gettext'.  */
91
92/* The user can define _INTL_REDIRECT_INLINE or _INTL_REDIRECT_MACROS.
93   If he doesn't, we choose the method.  A third possible method is
94   _INTL_REDIRECT_ASM, supported only by GCC.  */
95#if !(defined _INTL_REDIRECT_INLINE || defined _INTL_REDIRECT_MACROS)
96# if __GNUC__ >= 2 && !defined __APPLE_CC__ && (defined __STDC__ || defined __cplusplus)
97#  define _INTL_REDIRECT_ASM
98# else
99#  ifdef __cplusplus
100#   define _INTL_REDIRECT_INLINE
101#  else
102#   define _INTL_REDIRECT_MACROS
103#  endif
104# endif
105#endif
106/* Auxiliary macros.  */
107#ifdef _INTL_REDIRECT_ASM
108# define _INTL_ASM(cname) __asm__ (_INTL_ASMNAME (__USER_LABEL_PREFIX__, #cname))
109# define _INTL_ASMNAME(prefix,cnamestring) _INTL_STRINGIFY (prefix) cnamestring
110# define _INTL_STRINGIFY(prefix) #prefix
111#else
112# define _INTL_ASM(cname)
113#endif
114
115/* _INTL_MAY_RETURN_STRING_ARG(n) declares that the given function may return
116   its n-th argument literally.  This enables GCC to warn for example about
117   printf (gettext ("foo %y")).  */
118#if __GNUC__ >= 3 && !(__APPLE_CC__ > 1 && defined __cplusplus)
119# define _INTL_MAY_RETURN_STRING_ARG(n) __attribute__ ((__format_arg__ (n)))
120#else
121# define _INTL_MAY_RETURN_STRING_ARG(n)
122#endif
123
124/* Look up MSGID in the current default message catalog for the current
125   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
126   text).  */
127#ifdef _INTL_REDIRECT_INLINE
128extern char *libintl_gettext (const char *__msgid)
129       _INTL_MAY_RETURN_STRING_ARG (1);
130static inline char *gettext (const char *__msgid)
131{
132  return libintl_gettext (__msgid);
133}
134#else
135#ifdef _INTL_REDIRECT_MACROS
136# define gettext libintl_gettext
137#endif
138extern char *gettext _INTL_PARAMS ((const char *__msgid))
139       _INTL_ASM (libintl_gettext)
140       _INTL_MAY_RETURN_STRING_ARG (1);
141#endif
142
143/* Look up MSGID in the DOMAINNAME message catalog for the current
144   LC_MESSAGES locale.  */
145#ifdef _INTL_REDIRECT_INLINE
146extern char *libintl_dgettext (const char *__domainname, const char *__msgid)
147       _INTL_MAY_RETURN_STRING_ARG (2);
148static inline char *dgettext (const char *__domainname, const char *__msgid)
149{
150  return libintl_dgettext (__domainname, __msgid);
151}
152#else
153#ifdef _INTL_REDIRECT_MACROS
154# define dgettext libintl_dgettext
155#endif
156extern char *dgettext _INTL_PARAMS ((const char *__domainname,
157				     const char *__msgid))
158       _INTL_ASM (libintl_dgettext)
159       _INTL_MAY_RETURN_STRING_ARG (2);
160#endif
161
162/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
163   locale.  */
164#ifdef _INTL_REDIRECT_INLINE
165extern char *libintl_dcgettext (const char *__domainname, const char *__msgid,
166				int __category)
167       _INTL_MAY_RETURN_STRING_ARG (2);
168static inline char *dcgettext (const char *__domainname, const char *__msgid,
169			       int __category)
170{
171  return libintl_dcgettext (__domainname, __msgid, __category);
172}
173#else
174#ifdef _INTL_REDIRECT_MACROS
175# define dcgettext libintl_dcgettext
176#endif
177extern char *dcgettext _INTL_PARAMS ((const char *__domainname,
178				      const char *__msgid,
179				      int __category))
180       _INTL_ASM (libintl_dcgettext)
181       _INTL_MAY_RETURN_STRING_ARG (2);
182#endif
183
184
185/* Similar to `gettext' but select the plural form corresponding to the
186   number N.  */
187#ifdef _INTL_REDIRECT_INLINE
188extern char *libintl_ngettext (const char *__msgid1, const char *__msgid2,
189			       unsigned long int __n)
190       _INTL_MAY_RETURN_STRING_ARG (1) _INTL_MAY_RETURN_STRING_ARG (2);
191static inline char *ngettext (const char *__msgid1, const char *__msgid2,
192			      unsigned long int __n)
193{
194  return libintl_ngettext (__msgid1, __msgid2, __n);
195}
196#else
197#ifdef _INTL_REDIRECT_MACROS
198# define ngettext libintl_ngettext
199#endif
200extern char *ngettext _INTL_PARAMS ((const char *__msgid1,
201				     const char *__msgid2,
202				     unsigned long int __n))
203       _INTL_ASM (libintl_ngettext)
204       _INTL_MAY_RETURN_STRING_ARG (1) _INTL_MAY_RETURN_STRING_ARG (2);
205#endif
206
207/* Similar to `dgettext' but select the plural form corresponding to the
208   number N.  */
209#ifdef _INTL_REDIRECT_INLINE
210extern char *libintl_dngettext (const char *__domainname, const char *__msgid1,
211				const char *__msgid2, unsigned long int __n)
212       _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3);
213static inline char *dngettext (const char *__domainname, const char *__msgid1,
214			       const char *__msgid2, unsigned long int __n)
215{
216  return libintl_dngettext (__domainname, __msgid1, __msgid2, __n);
217}
218#else
219#ifdef _INTL_REDIRECT_MACROS
220# define dngettext libintl_dngettext
221#endif
222extern char *dngettext _INTL_PARAMS ((const char *__domainname,
223				      const char *__msgid1,
224				      const char *__msgid2,
225				      unsigned long int __n))
226       _INTL_ASM (libintl_dngettext)
227       _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3);
228#endif
229
230/* Similar to `dcgettext' but select the plural form corresponding to the
231   number N.  */
232#ifdef _INTL_REDIRECT_INLINE
233extern char *libintl_dcngettext (const char *__domainname,
234				 const char *__msgid1, const char *__msgid2,
235				 unsigned long int __n, int __category)
236       _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3);
237static inline char *dcngettext (const char *__domainname,
238				const char *__msgid1, const char *__msgid2,
239				unsigned long int __n, int __category)
240{
241  return libintl_dcngettext (__domainname, __msgid1, __msgid2, __n, __category);
242}
243#else
244#ifdef _INTL_REDIRECT_MACROS
245# define dcngettext libintl_dcngettext
246#endif
247extern char *dcngettext _INTL_PARAMS ((const char *__domainname,
248				       const char *__msgid1,
249				       const char *__msgid2,
250				       unsigned long int __n,
251				       int __category))
252       _INTL_ASM (libintl_dcngettext)
253       _INTL_MAY_RETURN_STRING_ARG (2) _INTL_MAY_RETURN_STRING_ARG (3);
254#endif
255
256
257/* Set the current default message catalog to DOMAINNAME.
258   If DOMAINNAME is null, return the current default.
259   If DOMAINNAME is "", reset to the default of "messages".  */
260#ifdef _INTL_REDIRECT_INLINE
261extern char *libintl_textdomain (const char *__domainname);
262static inline char *textdomain (const char *__domainname)
263{
264  return libintl_textdomain (__domainname);
265}
266#else
267#ifdef _INTL_REDIRECT_MACROS
268# define textdomain libintl_textdomain
269#endif
270extern char *textdomain _INTL_PARAMS ((const char *__domainname))
271       _INTL_ASM (libintl_textdomain);
272#endif
273
274/* Specify that the DOMAINNAME message catalog will be found
275   in DIRNAME rather than in the system locale data base.  */
276#ifdef _INTL_REDIRECT_INLINE
277extern char *libintl_bindtextdomain (const char *__domainname,
278				     const char *__dirname);
279static inline char *bindtextdomain (const char *__domainname,
280				    const char *__dirname)
281{
282  return libintl_bindtextdomain (__domainname, __dirname);
283}
284#else
285#ifdef _INTL_REDIRECT_MACROS
286# define bindtextdomain libintl_bindtextdomain
287#endif
288extern char *bindtextdomain _INTL_PARAMS ((const char *__domainname,
289					   const char *__dirname))
290       _INTL_ASM (libintl_bindtextdomain);
291#endif
292
293/* Specify the character encoding in which the messages from the
294   DOMAINNAME message catalog will be returned.  */
295#ifdef _INTL_REDIRECT_INLINE
296extern char *libintl_bind_textdomain_codeset (const char *__domainname,
297					      const char *__codeset);
298static inline char *bind_textdomain_codeset (const char *__domainname,
299					     const char *__codeset)
300{
301  return libintl_bind_textdomain_codeset (__domainname, __codeset);
302}
303#else
304#ifdef _INTL_REDIRECT_MACROS
305# define bind_textdomain_codeset libintl_bind_textdomain_codeset
306#endif
307extern char *bind_textdomain_codeset _INTL_PARAMS ((const char *__domainname,
308						    const char *__codeset))
309       _INTL_ASM (libintl_bind_textdomain_codeset);
310#endif
311
312
313/* Support for relocatable packages.  */
314
315/* Sets the original and the current installation prefix of the package.
316   Relocation simply replaces a pathname starting with the original prefix
317   by the corresponding pathname with the current prefix instead.  Both
318   prefixes should be directory names without trailing slash (i.e. use ""
319   instead of "/").  */
320#define libintl_set_relocation_prefix libintl_set_relocation_prefix
321extern void
322       libintl_set_relocation_prefix _INTL_PARAMS ((const char *orig_prefix,
323						    const char *curr_prefix));
324
325
326#ifdef __cplusplus
327}
328#endif
329
330#endif /* libintl.h */
331