1/* Convenience header for conditional use of GNU <libintl.h>.
2   Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005,
3   2006, 2009, 2010, 2011 Free Software Foundation, Inc.
4
5   This program is free software; you can redistribute it and/or modify it
6   under the terms of the GNU General Public License as published
7   by the Free Software Foundation; either version 2, 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 GNU
13   Library General Public License for more details.
14
15   You should have received a copy of the GNU General Public
16   License along with this program; if not, write to the Free Software
17   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
18   USA.  */
19
20#ifndef _LIBGETTEXT_H
21#define _LIBGETTEXT_H 1
22
23/* NLS can be disabled through the configure --disable-nls option.  */
24#if ENABLE_NLS
25
26/* Get declarations of GNU message catalog functions.  */
27# include <libintl.h>
28
29/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
30   the gettext() and ngettext() macros.  This is an alternative to calling
31   textdomain(), and is useful for libraries.  */
32# ifdef DEFAULT_TEXT_DOMAIN
33#  undef gettext
34#  define gettext(Msgid) \
35     dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
36#  undef ngettext
37#  define ngettext(Msgid1, Msgid2, N) \
38     dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
39# endif
40
41#else
42
43/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
44   chokes if dcgettext is defined as a macro.  So include it now, to make
45   later inclusions of <locale.h> a NOP.  We don't include <libintl.h>
46   as well because people using "gettext.h" will not include <libintl.h>,
47   and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
48   is OK.  */
49#if defined(__sun)
50# include <locale.h>
51#endif
52
53/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
54   <libintl.h>, which chokes if dcgettext is defined as a macro.  So include
55   it now, to make later inclusions of <libintl.h> a NOP.  */
56#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
57# include <cstdlib>
58# if (__GLIBC__ >= 2) || _GLIBCXX_HAVE_LIBINTL_H
59#  include <libintl.h>
60# endif
61#endif
62
63/* Disabled NLS.
64   The casts to 'const char *' serve the purpose of producing warnings
65   for invalid uses of the value returned from these functions.
66   On pre-ANSI systems without 'const', the config.h file is supposed to
67   contain "#define const".  */
68# define gettext(Msgid) ((const char *) (Msgid))
69# define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
70# define dcgettext(Domainname, Msgid, Category) \
71    ((void) (Category), dgettext (Domainname, Msgid))
72# define ngettext(Msgid1, Msgid2, N) \
73    ((N) == 1 \
74     ? ((void) (Msgid2), (const char *) (Msgid1)) \
75     : ((void) (Msgid1), (const char *) (Msgid2)))
76# define dngettext(Domainname, Msgid1, Msgid2, N) \
77    ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
78# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
79    ((void) (Category), dngettext(Domainname, Msgid1, Msgid2, N))
80# define textdomain(Domainname) ((const char *) (Domainname))
81# define bindtextdomain(Domainname, Dirname) \
82    ((void) (Domainname), (const char *) (Dirname))
83# define bind_textdomain_codeset(Domainname, Codeset) \
84    ((void) (Domainname), (const char *) (Codeset))
85
86#endif
87
88/* A pseudo function call that serves as a marker for the automated
89   extraction of messages, but does not call gettext().  The run-time
90   translation is done at a different place in the code.
91   The argument, String, should be a literal string.  Concatenated strings
92   and other string expressions won't work.
93   The macro's expansion is not parenthesized, so that it is suitable as
94   initializer for static 'char[]' or 'const char[]' variables.  */
95#define gettext_noop(String) String
96
97/* The separator between msgctxt and msgid in a .mo file.  */
98#define GETTEXT_CONTEXT_GLUE "\004"
99
100/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
101   MSGID.  MSGCTXT and MSGID must be string literals.  MSGCTXT should be
102   short and rarely need to change.
103   The letter 'p' stands for 'particular' or 'special'.  */
104#ifdef DEFAULT_TEXT_DOMAIN
105# define pgettext(Msgctxt, Msgid) \
106   pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
107#else
108# define pgettext(Msgctxt, Msgid) \
109   pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
110#endif
111#define dpgettext(Domainname, Msgctxt, Msgid) \
112  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
113#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
114  pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
115#ifdef DEFAULT_TEXT_DOMAIN
116# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
117   npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
118#else
119# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
120   npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
121#endif
122#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
123  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
124#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
125  npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
126
127#ifdef __GNUC__
128__inline
129#else
130#ifdef __cplusplus
131inline
132#endif
133#endif
134static const char *
135pgettext_aux (const char *domain,
136              const char *msg_ctxt_id, const char *msgid,
137              int category)
138{
139  const char *translation = dcgettext (domain, msg_ctxt_id, category);
140  if (translation == msg_ctxt_id)
141    return msgid;
142  else
143    return translation;
144}
145
146#ifdef __GNUC__
147__inline
148#else
149#ifdef __cplusplus
150inline
151#endif
152#endif
153static const char *
154npgettext_aux (const char *domain,
155               const char *msg_ctxt_id, const char *msgid,
156               const char *msgid_plural, unsigned long int n,
157               int category)
158{
159  const char *translation =
160    dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
161  if (translation == msg_ctxt_id || translation == msgid_plural)
162    return (n == 1 ? msgid : msgid_plural);
163  else
164    return translation;
165}
166
167/* The same thing extended for non-constant arguments.  Here MSGCTXT and MSGID
168   can be arbitrary expressions.  But for string literals these macros are
169   less efficient than those above.  */
170
171#include <string.h>
172
173#define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS \
174  (((__GNUC__ >= 3 || __GNUG__ >= 2) && !__STRICT_ANSI__) \
175   /* || __STDC_VERSION__ >= 199901L */ )
176
177#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
178#include <stdlib.h>
179#endif
180
181#define pgettext_expr(Msgctxt, Msgid) \
182  dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
183#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
184  dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
185
186#ifdef __GNUC__
187__inline
188#else
189#ifdef __cplusplus
190inline
191#endif
192#endif
193static const char *
194dcpgettext_expr (const char *domain,
195                 const char *msgctxt, const char *msgid,
196                 int category)
197{
198  size_t msgctxt_len = strlen (msgctxt) + 1;
199  size_t msgid_len = strlen (msgid) + 1;
200  const char *translation;
201#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
202  char msg_ctxt_id[msgctxt_len + msgid_len];
203#else
204  char buf[1024];
205  char *msg_ctxt_id =
206    (msgctxt_len + msgid_len <= sizeof (buf)
207     ? buf
208     : (char *) malloc (msgctxt_len + msgid_len));
209  if (msg_ctxt_id != NULL)
210#endif
211    {
212      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
213      msg_ctxt_id[msgctxt_len - 1] = '\004';
214      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
215      translation = dcgettext (domain, msg_ctxt_id, category);
216#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
217      if (msg_ctxt_id != buf)
218        free (msg_ctxt_id);
219#endif
220      if (translation != msg_ctxt_id)
221        return translation;
222    }
223  return msgid;
224}
225
226#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
227  dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
228#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
229  dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
230
231#ifdef __GNUC__
232__inline
233#else
234#ifdef __cplusplus
235inline
236#endif
237#endif
238static const char *
239dcnpgettext_expr (const char *domain,
240                  const char *msgctxt, const char *msgid,
241                  const char *msgid_plural, unsigned long int n,
242                  int category)
243{
244  size_t msgctxt_len = strlen (msgctxt) + 1;
245  size_t msgid_len = strlen (msgid) + 1;
246  const char *translation;
247#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
248  char msg_ctxt_id[msgctxt_len + msgid_len];
249#else
250  char buf[1024];
251  char *msg_ctxt_id =
252    (msgctxt_len + msgid_len <= sizeof (buf)
253     ? buf
254     : (char *) malloc (msgctxt_len + msgid_len));
255  if (msg_ctxt_id != NULL)
256#endif
257    {
258      memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
259      msg_ctxt_id[msgctxt_len - 1] = '\004';
260      memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
261      translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
262#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
263      if (msg_ctxt_id != buf)
264        free (msg_ctxt_id);
265#endif
266      if (!(translation == msg_ctxt_id || translation == msgid_plural))
267        return translation;
268    }
269  return (n == 1 ? msgid : msgid_plural);
270}
271
272#endif /* _LIBGETTEXT_H */
273