1/* Convenience header for conditional use of GNU <libintl.h>.
2   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2011 Free Software
3   Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify
6   it under the terms of the GNU General Public License as published by
7   the Free Software Foundation; either version 3, or (at your option)
8   any later version.
9
10   This program is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   GNU General Public License for more details.
14
15   You should have received a copy of the GNU General Public License along
16   with this program; if not, write to the Free Software Foundation,
17   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
18
19#ifndef _LIBGETTEXT_H
20#define _LIBGETTEXT_H 1
21
22/* NLS can be disabled through the configure --disable-nls option.  */
23#if ENABLE_NLS
24
25/* Get declarations of GNU message catalog functions.  */
26# include <libintl.h>
27
28/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
29   the gettext() and ngettext() macros.  This is an alternative to calling
30   textdomain(), and is useful for libraries.  */
31# ifdef DEFAULT_TEXT_DOMAIN
32#  undef gettext
33#  define gettext(Msgid) \
34     dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
35#  undef ngettext
36#  define ngettext(Msgid1, Msgid2, N) \
37     dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
38# endif
39
40#else
41
42/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
43   chokes if dcgettext is defined as a macro.  So include it now, to make
44   later inclusions of <locale.h> a NOP.  We don't include <libintl.h>
45   as well because people using "gettext.h" will not include <libintl.h>,
46   and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
47   is OK.  */
48#if defined(__sun)
49# include <locale.h>
50#endif
51
52/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
53   <libintl.h>, which chokes if dcgettext is defined as a macro.  So include
54   it now, to make later inclusions of <libintl.h> a NOP.  */
55#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
56# include <cstdlib>
57# if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H
58#  include <libintl.h>
59# endif
60#endif
61
62/* Disabled NLS.
63   The casts to 'const char *' serve the purpose of producing warnings
64   for invalid uses of the value returned from these functions.
65   On pre-ANSI systems without 'const', the config.h file is supposed to
66   contain "#define const".  */
67# undef gettext
68# define gettext(Msgid) ((const char *) (Msgid))
69# undef dgettext
70# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
71# undef dcgettext
72# define dcgettext(Domainname, Msgid, Category) \
73    ((void) (Category), dgettext (Domainname, Msgid))
74# undef ngettext
75# define ngettext(Msgid1, Msgid2, N) \
76    ((N) == 1 \
77     ? ((void) (Msgid2), (const char *) (Msgid1)) \
78     : ((void) (Msgid1), (const char *) (Msgid2)))
79# undef dngettext
80# define dngettext(Domainname, Msgid1, Msgid2, N) \
81    ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
82# undef dcngettext
83# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
84    ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
85# undef textdomain
86# define textdomain(Domainname) ((const char *) (Domainname))
87# undef bindtextdomain
88# define bindtextdomain(Domainname, Dirname) \
89    ((void) (Domainname), (const char *) (Dirname))
90# undef bind_textdomain_codeset
91# define bind_textdomain_codeset(Domainname, Codeset) \
92    ((void) (Domainname), (const char *) (Codeset))
93
94#endif
95
96/* Prefer gnulib's setlocale override over libintl's setlocale override.  */
97#ifdef GNULIB_defined_setlocale
98# undef setlocale
99# define setlocale rpl_setlocale
100#endif
101
102/* A pseudo function call that serves as a marker for the automated
103   extraction of messages, but does not call gettext().  The run-time
104   translation is done at a different place in the code.
105   The argument, String, should be a literal string.  Concatenated strings
106   and other string expressions won't work.
107   The macro's expansion is not parenthesized, so that it is suitable as
108   initializer for static 'char[]' or 'const char[]' variables.  */
109#define gettext_noop(String) String
110
111/* The separator between msgctxt and msgid in a .mo file.  */
112#define GETTEXT_CONTEXT_GLUE "\004"
113
114/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
115   MSGID.  MSGCTXT and MSGID must be string literals.  MSGCTXT should be
116   short and rarely need to change.
117   The letter 'p' stands for 'particular' or 'special'.  */
118#ifdef DEFAULT_TEXT_DOMAIN
119# define pgettext(Msgctxt, Msgid) \
120   pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
121#else
122# define pgettext(Msgctxt, Msgid) \
123   pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
124#endif
125#define dpgettext(Domainname, Msgctxt, Msgid) \
126  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
127#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
128  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
129#ifdef DEFAULT_TEXT_DOMAIN
130# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
131   npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
132#else
133# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
134   npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
135#endif
136#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
137  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
138#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
139  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
140
141#ifdef __GNUC__
142__inline
143#else
144#ifdef __cplusplus
145inline
146#endif
147#endif
148static const char *
149pgettext_aux (const char *domain,
150              const char *msg_ctxt_id, const char *msgid,
151              int category)
152{
153  const char *translation = dcgettext (domain, msg_ctxt_id, category);
154  if (translation == msg_ctxt_id)
155    return msgid;
156  else
157    return translation;
158}
159
160#ifdef __GNUC__
161__inline
162#else
163#ifdef __cplusplus
164inline
165#endif
166#endif
167static const char *
168npgettext_aux (const char *domain,
169               const char *msg_ctxt_id, const char *msgid,
170               const char *msgid_plural, unsigned long int n,
171               int category)
172{
173  const char *translation =
174    dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
175  if (translation == msg_ctxt_id || translation == msgid_plural)
176    return (n == 1 ? msgid : msgid_plural);
177  else
178    return translation;
179}
180
181/* The same thing extended for non-constant arguments.  Here MSGCTXT and MSGID
182   can be arbitrary expressions.  But for string literals these macros are
183   less efficient than those above.  */
184
185#include <string.h>
186
187#define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
188  (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
189   /* || __STDC_VERSION__ >= 199901L */ )
190
191#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
192#include <stdlib.h>
193#endif
194
195#define pgettext_expr(Msgctxt, Msgid) \
196  dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
197#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
198  dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
199
200#ifdef __GNUC__
201__inline
202#else
203#ifdef __cplusplus
204inline
205#endif
206#endif
207static const char *
208dcpgettext_expr (const char *domain,
209                 const char *msgctxt, const char *msgid,
210                 int category)
211{
212  size_t msgctxt_len = strlen (msgctxt) + 1;
213  size_t msgid_len = strlen (msgid) + 1;
214  const char *translation;
215#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
216  char msg_ctxt_id[msgctxt_len + msgid_len];
217#else
218  char buf[1024];
219  char *msg_ctxt_id =
220    (msgctxt_len + msgid_len <= sizeof (buf)
221     ? buf
222     : (char *) malloc (msgctxt_len + msgid_len));
223  if (msg_ctxt_id != NULL)
224#endif
225    {
226      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
227      msg_ctxt_id[msgctxt_len - 1] = '\004';
228      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
229      translation = dcgettext (domain, msg_ctxt_id, category);
230#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
231      if (msg_ctxt_id != buf)
232        free (msg_ctxt_id);
233#endif
234      if (translation != msg_ctxt_id)
235        return translation;
236    }
237  return msgid;
238}
239
240#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
241  dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
242#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
243  dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
244
245#ifdef __GNUC__
246__inline
247#else
248#ifdef __cplusplus
249inline
250#endif
251#endif
252static const char *
253dcnpgettext_expr (const char *domain,
254                  const char *msgctxt, const char *msgid,
255                  const char *msgid_plural, unsigned long int n,
256                  int category)
257{
258  size_t msgctxt_len = strlen (msgctxt) + 1;
259  size_t msgid_len = strlen (msgid) + 1;
260  const char *translation;
261#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
262  char msg_ctxt_id[msgctxt_len + msgid_len];
263#else
264  char buf[1024];
265  char *msg_ctxt_id =
266    (msgctxt_len + msgid_len <= sizeof (buf)
267     ? buf
268     : (char *) malloc (msgctxt_len + msgid_len));
269  if (msg_ctxt_id != NULL)
270#endif
271    {
272      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
273      msg_ctxt_id[msgctxt_len - 1] = '\004';
274      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
275      translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
276#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
277      if (msg_ctxt_id != buf)
278        free (msg_ctxt_id);
279#endif
280      if (!(translation == msg_ctxt_id || translation == msgid_plural))
281        return translation;
282    }
283  return (n == 1 ? msgid : msgid_plural);
284}
285
286#endif /* _LIBGETTEXT_H */
287