1/* Convenience header for conditional use of GNU <libintl.h>.
2   Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2010 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) || _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/* A pseudo function call that serves as a marker for the automated
97   extraction of messages, but does not call gettext().  The run-time
98   translation is done at a different place in the code.
99   The argument, String, should be a literal string.  Concatenated strings
100   and other string expressions won't work.
101   The macro's expansion is not parenthesized, so that it is suitable as
102   initializer for static 'char[]' or 'const char[]' variables.  */
103#define gettext_noop(String) String
104
105/* The separator between msgctxt and msgid in a .mo file.  */
106#define GETTEXT_CONTEXT_GLUE "\004"
107
108/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
109   MSGID.  MSGCTXT and MSGID must be string literals.  MSGCTXT should be
110   short and rarely need to change.
111   The letter 'p' stands for 'particular' or 'special'.  */
112#ifdef DEFAULT_TEXT_DOMAIN
113# define pgettext(Msgctxt, Msgid) \
114   pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
115#else
116# define pgettext(Msgctxt, Msgid) \
117   pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
118#endif
119#define dpgettext(Domainname, Msgctxt, Msgid) \
120  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
121#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
122  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
123#ifdef DEFAULT_TEXT_DOMAIN
124# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
125   npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
126#else
127# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
128   npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
129#endif
130#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
131  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
132#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
133  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
134
135#ifdef __GNUC__
136__inline
137#else
138#ifdef __cplusplus
139inline
140#endif
141#endif
142static const char *
143pgettext_aux (const char *domain,
144              const char *msg_ctxt_id, const char *msgid,
145              int category)
146{
147  const char *translation = dcgettext (domain, msg_ctxt_id, category);
148  if (translation == msg_ctxt_id)
149    return msgid;
150  else
151    return translation;
152}
153
154#ifdef __GNUC__
155__inline
156#else
157#ifdef __cplusplus
158inline
159#endif
160#endif
161static const char *
162npgettext_aux (const char *domain,
163               const char *msg_ctxt_id, const char *msgid,
164               const char *msgid_plural, unsigned long int n,
165               int category)
166{
167  const char *translation =
168    dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
169  if (translation == msg_ctxt_id || translation == msgid_plural)
170    return (n == 1 ? msgid : msgid_plural);
171  else
172    return translation;
173}
174
175/* The same thing extended for non-constant arguments.  Here MSGCTXT and MSGID
176   can be arbitrary expressions.  But for string literals these macros are
177   less efficient than those above.  */
178
179#include <string.h>
180
181#define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
182  (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
183   /* || __STDC_VERSION__ >= 199901L */ )
184
185#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
186#include <stdlib.h>
187#endif
188
189#define pgettext_expr(Msgctxt, Msgid) \
190  dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
191#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
192  dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
193
194#ifdef __GNUC__
195__inline
196#else
197#ifdef __cplusplus
198inline
199#endif
200#endif
201static const char *
202dcpgettext_expr (const char *domain,
203                 const char *msgctxt, const char *msgid,
204                 int category)
205{
206  size_t msgctxt_len = strlen (msgctxt) + 1;
207  size_t msgid_len = strlen (msgid) + 1;
208  const char *translation;
209#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
210  char msg_ctxt_id[msgctxt_len + msgid_len];
211#else
212  char buf[1024];
213  char *msg_ctxt_id =
214    (msgctxt_len + msgid_len <= sizeof (buf)
215     ? buf
216     : (char *) malloc (msgctxt_len + msgid_len));
217  if (msg_ctxt_id != NULL)
218#endif
219    {
220      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
221      msg_ctxt_id[msgctxt_len - 1] = '\004';
222      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
223      translation = dcgettext (domain, msg_ctxt_id, category);
224#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
225      if (msg_ctxt_id != buf)
226        free (msg_ctxt_id);
227#endif
228      if (translation != msg_ctxt_id)
229        return translation;
230    }
231  return msgid;
232}
233
234#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
235  dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
236#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
237  dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
238
239#ifdef __GNUC__
240__inline
241#else
242#ifdef __cplusplus
243inline
244#endif
245#endif
246static const char *
247dcnpgettext_expr (const char *domain,
248                  const char *msgctxt, const char *msgid,
249                  const char *msgid_plural, unsigned long int n,
250                  int category)
251{
252  size_t msgctxt_len = strlen (msgctxt) + 1;
253  size_t msgid_len = strlen (msgid) + 1;
254  const char *translation;
255#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
256  char msg_ctxt_id[msgctxt_len + msgid_len];
257#else
258  char buf[1024];
259  char *msg_ctxt_id =
260    (msgctxt_len + msgid_len <= sizeof (buf)
261     ? buf
262     : (char *) malloc (msgctxt_len + msgid_len));
263  if (msg_ctxt_id != NULL)
264#endif
265    {
266      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
267      msg_ctxt_id[msgctxt_len - 1] = '\004';
268      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
269      translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
270#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
271      if (msg_ctxt_id != buf)
272        free (msg_ctxt_id);
273#endif
274      if (!(translation == msg_ctxt_id || translation == msgid_plural))
275        return translation;
276    }
277  return (n == 1 ? msgid : msgid_plural);
278}
279
280#endif /* _LIBGETTEXT_H */
281