1 /* $NetBSD: gettext.h,v 1.6 2024/08/18 20:47:24 christos Exp $ */
2
3 /* Convenience header for conditional use of GNU <libintl.h>.
4 Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2018 Free Software
5 Foundation, Inc.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1, or (at your option)
10 any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public License along
18 with this program; if not, see <https://www.gnu.org/licenses/>. */
19
20 #ifndef _LIBGETTEXT_H
21 #define _LIBGETTEXT_H 1
22
23 /* NLS can be disabled through the configure --disable-nls option
24 or through "#define ENABLE NLS 0" before including this file. */
25 #if defined ENABLE_NLS && ENABLE_NLS
26
27 /* Get declarations of GNU message catalog functions. */
28 # include <libintl.h>
29
30 /* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
31 the gettext() and ngettext() macros. This is an alternative to calling
32 textdomain(), and is useful for libraries. */
33 # ifdef DEFAULT_TEXT_DOMAIN
34 # undef gettext
35 # define gettext(Msgid) \
36 dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
37 # undef ngettext
38 # define ngettext(Msgid1, Msgid2, N) \
39 dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
40 # endif
41
42 #else
43
44 /* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
45 chokes if dcgettext is defined as a macro. So include it now, to make
46 later inclusions of <locale.h> a NOP. We don't include <libintl.h>
47 as well because people using "gettext.h" will not include <libintl.h>,
48 and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
49 is OK. */
50 #if defined(__sun)
51 # include <locale.h>
52 #endif
53
54 /* Many header files from the libstdc++ coming with g++ 3.3 or newer include
55 <libintl.h>, which chokes if dcgettext is defined as a macro. So include
56 it now, to make later inclusions of <libintl.h> a NOP. */
57 #if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
58 # include <cstdlib>
59 # if (__GLIBC__ >= 2 && !defined __UCLIBC__) || _GLIBCXX_HAVE_LIBINTL_H
60 # include <libintl.h>
61 # endif
62 #endif
63
64 /* Disabled NLS.
65 The casts to 'const char *' serve the purpose of producing warnings
66 for invalid uses of the value returned from these functions.
67 On pre-ANSI systems without 'const', the config.h file is supposed to
68 contain "#define const". */
69 # undef gettext
70 # define gettext(Msgid) ((const char *) (Msgid))
71 # undef dgettext
72 # define dgettext(Domainname, Msgid) ((void) (Domainname), gettext (Msgid))
73 # undef dcgettext
74 # define dcgettext(Domainname, Msgid, Category) \
75 ((void) (Category), dgettext (Domainname, Msgid))
76 # undef ngettext
77 # define ngettext(Msgid1, Msgid2, N) \
78 ((N) == 1 \
79 ? ((void) (Msgid2), (const char *) (Msgid1)) \
80 : ((void) (Msgid1), (const char *) (Msgid2)))
81 # undef dngettext
82 # define dngettext(Domainname, Msgid1, Msgid2, N) \
83 ((void) (Domainname), ngettext (Msgid1, Msgid2, N))
84 # undef dcngettext
85 # define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
86 ((void) (Category), dngettext (Domainname, Msgid1, Msgid2, N))
87 # undef textdomain
88 # define textdomain(Domainname) ((const char *) (Domainname))
89 # undef bindtextdomain
90 # define bindtextdomain(Domainname, Dirname) \
91 ((void) (Domainname), (const char *) (Dirname))
92 # undef bind_textdomain_codeset
93 # define bind_textdomain_codeset(Domainname, Codeset) \
94 ((void) (Domainname), (const char *) (Codeset))
95
96 #endif
97
98 /* Prefer gnulib's setlocale override over libintl's setlocale override. */
99 #ifdef GNULIB_defined_setlocale
100 # undef setlocale
101 # define setlocale rpl_setlocale
102 #endif
103
104 /* A pseudo function call that serves as a marker for the automated
105 extraction of messages, but does not call gettext(). The run-time
106 translation is done at a different place in the code.
107 The argument, String, should be a literal string. Concatenated strings
108 and other string expressions won't work.
109 The macro's expansion is not parenthesized, so that it is suitable as
110 initializer for static 'char[]' or 'const char[]' variables. */
111 #define gettext_noop(String) String
112
113 /* The separator between msgctxt and msgid in a .mo file. */
114 #define GETTEXT_CONTEXT_GLUE "\004"
115
116 /* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
117 MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
118 short and rarely need to change.
119 The letter 'p' stands for 'particular' or 'special'. */
120 #ifdef DEFAULT_TEXT_DOMAIN
121 # define pgettext(Msgctxt, Msgid) \
122 pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
123 #else
124 # define pgettext(Msgctxt, Msgid) \
125 pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
126 #endif
127 #define dpgettext(Domainname, Msgctxt, Msgid) \
128 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
129 #define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
130 pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
131 #ifdef DEFAULT_TEXT_DOMAIN
132 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
133 npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
134 #else
135 # define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
136 npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
137 #endif
138 #define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
139 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
140 #define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
141 npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
142
143 #ifdef __GNUC__
144 __inline
145 #else
146 #ifdef __cplusplus
147 inline
148 #endif
149 #endif
150 static const char *
pgettext_aux(const char * domain,const char * msg_ctxt_id,const char * msgid,int category)151 pgettext_aux (const char *domain,
152 const char *msg_ctxt_id, const char *msgid,
153 int category)
154 {
155 const char *translation = dcgettext (domain, msg_ctxt_id, category);
156 if (translation == msg_ctxt_id)
157 return msgid;
158 else
159 return translation;
160 }
161
162 #ifdef __GNUC__
163 __inline
164 #else
165 #ifdef __cplusplus
166 inline
167 #endif
168 #endif
169 static const char *
npgettext_aux(const char * domain,const char * msg_ctxt_id,const char * msgid,const char * msgid_plural,unsigned long int n,int category)170 npgettext_aux (const char *domain,
171 const char *msg_ctxt_id, const char *msgid,
172 const char *msgid_plural, unsigned long int n,
173 int category)
174 {
175 const char *translation =
176 dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
177 if (translation == msg_ctxt_id || translation == msgid_plural)
178 return (n == 1 ? msgid : msgid_plural);
179 else
180 return translation;
181 }
182
183 /* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
184 can be arbitrary expressions. But for string literals these macros are
185 less efficient than those above. */
186
187 #include <string.h>
188
189 #if (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
190 /* || __STDC_VERSION__ == 199901L
191 || (__STDC_VERSION__ >= 201112L && !defined __STDC_NO_VLA__) */ )
192 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
193 #else
194 # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
195 #endif
196
197 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
198 #include <stdlib.h>
199 #endif
200
201 #define pgettext_expr(Msgctxt, Msgid) \
202 dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
203 #define dpgettext_expr(Domainname, Msgctxt, Msgid) \
204 dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
205
206 #ifdef __GNUC__
207 __inline
208 #else
209 #ifdef __cplusplus
210 inline
211 #endif
212 #endif
213 static const char *
dcpgettext_expr(const char * domain,const char * msgctxt,const char * msgid,int category)214 dcpgettext_expr (const char *domain,
215 const char *msgctxt, const char *msgid,
216 int category)
217 {
218 size_t msgctxt_len = strlen (msgctxt) + 1;
219 size_t msgid_len = strlen (msgid) + 1;
220 const char *translation;
221 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
222 char msg_ctxt_id[msgctxt_len + msgid_len];
223 #else
224 char buf[1024];
225 char *msg_ctxt_id =
226 (msgctxt_len + msgid_len <= sizeof (buf)
227 ? buf
228 : (char *) malloc (msgctxt_len + msgid_len));
229 if (msg_ctxt_id != NULL)
230 #endif
231 {
232 int found_translation;
233 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
234 msg_ctxt_id[msgctxt_len - 1] = '\004';
235 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
236 translation = dcgettext (domain, msg_ctxt_id, category);
237 found_translation = (translation != msg_ctxt_id);
238 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
239 if (msg_ctxt_id != buf)
240 free (msg_ctxt_id);
241 #endif
242 if (found_translation)
243 return translation;
244 }
245 return msgid;
246 }
247
248 #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
249 dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
250 #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
251 dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
252
253 #ifdef __GNUC__
254 __inline
255 #else
256 #ifdef __cplusplus
257 inline
258 #endif
259 #endif
260 static const char *
dcnpgettext_expr(const char * domain,const char * msgctxt,const char * msgid,const char * msgid_plural,unsigned long int n,int category)261 dcnpgettext_expr (const char *domain,
262 const char *msgctxt, const char *msgid,
263 const char *msgid_plural, unsigned long int n,
264 int category)
265 {
266 size_t msgctxt_len = strlen (msgctxt) + 1;
267 size_t msgid_len = strlen (msgid) + 1;
268 const char *translation;
269 #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
270 char msg_ctxt_id[msgctxt_len + msgid_len];
271 #else
272 char buf[1024];
273 char *msg_ctxt_id =
274 (msgctxt_len + msgid_len <= sizeof (buf)
275 ? buf
276 : (char *) malloc (msgctxt_len + msgid_len));
277 if (msg_ctxt_id != NULL)
278 #endif
279 {
280 int found_translation;
281 memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
282 msg_ctxt_id[msgctxt_len - 1] = '\004';
283 memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
284 translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
285 found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
286 #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
287 if (msg_ctxt_id != buf)
288 free (msg_ctxt_id);
289 #endif
290 if (found_translation)
291 return translation;
292 }
293 return (n == 1 ? msgid : msgid_plural);
294 }
295
296 #endif /* _LIBGETTEXT_H */
297