source: trunk/third/texinfo/intl/libgnuintl.h @ 18945

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1/* Message catalogs for internationalization.
2   Copyright (C) 1995-1997, 2000-2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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 __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/* Look up MSGID in the current default message catalog for the current
116   LC_MESSAGES locale.  If not found, returns MSGID itself (the default
117   text).  */
118#ifdef _INTL_REDIRECT_INLINE
119extern char *libintl_gettext (const char *__msgid);
120static inline char *gettext (const char *__msgid)
121{
122  return libintl_gettext (__msgid);
123}
124#else
125#ifdef _INTL_REDIRECT_MACROS
126# define gettext libintl_gettext
127#endif
128extern char *gettext _INTL_PARAMS ((const char *__msgid))
129       _INTL_ASM (libintl_gettext);
130#endif
131
132/* Look up MSGID in the DOMAINNAME message catalog for the current
133   LC_MESSAGES locale.  */
134#ifdef _INTL_REDIRECT_INLINE
135extern char *libintl_dgettext (const char *__domainname, const char *__msgid);
136static inline char *dgettext (const char *__domainname, const char *__msgid)
137{
138  return libintl_dgettext (__domainname, __msgid);
139}
140#else
141#ifdef _INTL_REDIRECT_MACROS
142# define dgettext libintl_dgettext
143#endif
144extern char *dgettext _INTL_PARAMS ((const char *__domainname,
145                                     const char *__msgid))
146       _INTL_ASM (libintl_dgettext);
147#endif
148
149/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY
150   locale.  */
151#ifdef _INTL_REDIRECT_INLINE
152extern char *libintl_dcgettext (const char *__domainname, const char *__msgid,
153                                int __category);
154static inline char *dcgettext (const char *__domainname, const char *__msgid,
155                               int __category)
156{
157  return libintl_dcgettext (__domainname, __msgid, __category);
158}
159#else
160#ifdef _INTL_REDIRECT_MACROS
161# define dcgettext libintl_dcgettext
162#endif
163extern char *dcgettext _INTL_PARAMS ((const char *__domainname,
164                                      const char *__msgid,
165                                      int __category))
166       _INTL_ASM (libintl_dcgettext);
167#endif
168
169
170/* Similar to `gettext' but select the plural form corresponding to the
171   number N.  */
172#ifdef _INTL_REDIRECT_INLINE
173extern char *libintl_ngettext (const char *__msgid1, const char *__msgid2,
174                               unsigned long int __n);
175static inline char *ngettext (const char *__msgid1, const char *__msgid2,
176                              unsigned long int __n)
177{
178  return libintl_ngettext (__msgid1, __msgid2, __n);
179}
180#else
181#ifdef _INTL_REDIRECT_MACROS
182# define ngettext libintl_ngettext
183#endif
184extern char *ngettext _INTL_PARAMS ((const char *__msgid1,
185                                     const char *__msgid2,
186                                     unsigned long int __n))
187       _INTL_ASM (libintl_ngettext);
188#endif
189
190/* Similar to `dgettext' but select the plural form corresponding to the
191   number N.  */
192#ifdef _INTL_REDIRECT_INLINE
193extern char *libintl_dngettext (const char *__domainname, const char *__msgid1,
194                                const char *__msgid2, unsigned long int __n);
195static inline char *dngettext (const char *__domainname, const char *__msgid1,
196                               const char *__msgid2, unsigned long int __n)
197{
198  return libintl_dngettext (__domainname, __msgid1, __msgid2, __n);
199}
200#else
201#ifdef _INTL_REDIRECT_MACROS
202# define dngettext libintl_dngettext
203#endif
204extern char *dngettext _INTL_PARAMS ((const char *__domainname,
205                                      const char *__msgid1,
206                                      const char *__msgid2,
207                                      unsigned long int __n))
208       _INTL_ASM (libintl_dngettext);
209#endif
210
211/* Similar to `dcgettext' but select the plural form corresponding to the
212   number N.  */
213#ifdef _INTL_REDIRECT_INLINE
214extern char *libintl_dcngettext (const char *__domainname,
215                                 const char *__msgid1, const char *__msgid2,
216                                 unsigned long int __n, int __category);
217static inline char *dcngettext (const char *__domainname,
218                                const char *__msgid1, const char *__msgid2,
219                                unsigned long int __n, int __category)
220{
221  return libintl_dcngettext (__domainname, __msgid1, __msgid2, __n, __category);
222}
223#else
224#ifdef _INTL_REDIRECT_MACROS
225# define dcngettext libintl_dcngettext
226#endif
227extern char *dcngettext _INTL_PARAMS ((const char *__domainname,
228                                       const char *__msgid1,
229                                       const char *__msgid2,
230                                       unsigned long int __n,
231                                       int __category))
232       _INTL_ASM (libintl_dcngettext);
233#endif
234
235
236/* Set the current default message catalog to DOMAINNAME.
237   If DOMAINNAME is null, return the current default.
238   If DOMAINNAME is "", reset to the default of "messages".  */
239#ifdef _INTL_REDIRECT_INLINE
240extern char *libintl_textdomain (const char *__domainname);
241static inline char *textdomain (const char *__domainname)
242{
243  return libintl_textdomain (__domainname);
244}
245#else
246#ifdef _INTL_REDIRECT_MACROS
247# define textdomain libintl_textdomain
248#endif
249extern char *textdomain _INTL_PARAMS ((const char *__domainname))
250       _INTL_ASM (libintl_textdomain);
251#endif
252
253/* Specify that the DOMAINNAME message catalog will be found
254   in DIRNAME rather than in the system locale data base.  */
255#ifdef _INTL_REDIRECT_INLINE
256extern char *libintl_bindtextdomain (const char *__domainname,
257                                     const char *__dirname);
258static inline char *bindtextdomain (const char *__domainname,
259                                    const char *__dirname)
260{
261  return libintl_bindtextdomain (__domainname, __dirname);
262}
263#else
264#ifdef _INTL_REDIRECT_MACROS
265# define bindtextdomain libintl_bindtextdomain
266#endif
267extern char *bindtextdomain _INTL_PARAMS ((const char *__domainname,
268                                           const char *__dirname))
269       _INTL_ASM (libintl_bindtextdomain);
270#endif
271
272/* Specify the character encoding in which the messages from the
273   DOMAINNAME message catalog will be returned.  */
274#ifdef _INTL_REDIRECT_INLINE
275extern char *libintl_bind_textdomain_codeset (const char *__domainname,
276                                              const char *__codeset);
277static inline char *bind_textdomain_codeset (const char *__domainname,
278                                             const char *__codeset)
279{
280  return libintl_bind_textdomain_codeset (__domainname, __codeset);
281}
282#else
283#ifdef _INTL_REDIRECT_MACROS
284# define bind_textdomain_codeset libintl_bind_textdomain_codeset
285#endif
286extern char *bind_textdomain_codeset _INTL_PARAMS ((const char *__domainname,
287                                                    const char *__codeset))
288       _INTL_ASM (libintl_bind_textdomain_codeset);
289#endif
290
291
292#ifdef __cplusplus
293}
294#endif
295
296#endif /* libintl.h */
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