1: /* Convenience header for conditional use of GNU <libintl.h>.
2: Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2019 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, see <https://www.gnu.org/licenses/>. */
17:
18: #ifndef _LIBGETTEXT_H
19: #define _LIBGETTEXT_H 1
20:
21: /* NLS can be disabled through the configure --disable-nls option
22: or through "#define ENABLE NLS 0" before including this file. */
23: #if defined ENABLE_NLS && 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
145: inline
146: #endif
147: #endif
148: static const char *
149: pgettext_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
164: inline
165: #endif
166: #endif
167: static const char *
168: npgettext_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: /* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
188: This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
189: the default GCC many warnings set. This allows programs to disable use
190: of VLAs, which may be unintended, or may be awkward to support portably,
191: or may have security implications due to non-deterministic stack usage. */
192:
193: #if (!defined GNULIB_NO_VLA \
194: && (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
195: /* || (__STDC_VERSION__ == 199901L && !defined __HP_cc)
196: || (__STDC_VERSION__ >= 201112L && !defined __STDC_NO_VLA__) */ ))
197: # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
198: #else
199: # define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
200: #endif
201:
202: #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
203: #include <stdlib.h>
204: #endif
205:
206: #define pgettext_expr(Msgctxt, Msgid) \
207: dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
208: #define dpgettext_expr(Domainname, Msgctxt, Msgid) \
209: dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
210:
211: #ifdef __GNUC__
212: __inline
213: #else
214: #ifdef __cplusplus
215: inline
216: #endif
217: #endif
218: static const char *
219: dcpgettext_expr (const char *domain,
220: const char *msgctxt, const char *msgid,
221: int category)
222: {
223: size_t msgctxt_len = strlen (msgctxt) + 1;
224: size_t msgid_len = strlen (msgid) + 1;
225: const char *translation;
226: #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
227: char msg_ctxt_id[msgctxt_len + msgid_len];
228: #else
229: char buf[1024];
230: char *msg_ctxt_id =
231: (msgctxt_len + msgid_len <= sizeof (buf)
232: ? buf
233: : (char *) malloc (msgctxt_len + msgid_len));
234: if (msg_ctxt_id != NULL)
235: #endif
236: {
237: int found_translation;
238: memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
239: msg_ctxt_id[msgctxt_len - 1] = '\004';
240: memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
241: translation = dcgettext (domain, msg_ctxt_id, category);
242: found_translation = (translation != msg_ctxt_id);
243: #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
244: if (msg_ctxt_id != buf)
245: free (msg_ctxt_id);
246: #endif
247: if (found_translation)
248: return translation;
249: }
250: return msgid;
251: }
252:
253: #define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
254: dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
255: #define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
256: dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
257:
258: #ifdef __GNUC__
259: __inline
260: #else
261: #ifdef __cplusplus
262: inline
263: #endif
264: #endif
265: static const char *
266: dcnpgettext_expr (const char *domain,
267: const char *msgctxt, const char *msgid,
268: const char *msgid_plural, unsigned long int n,
269: int category)
270: {
271: size_t msgctxt_len = strlen (msgctxt) + 1;
272: size_t msgid_len = strlen (msgid) + 1;
273: const char *translation;
274: #if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
275: char msg_ctxt_id[msgctxt_len + msgid_len];
276: #else
277: char buf[1024];
278: char *msg_ctxt_id =
279: (msgctxt_len + msgid_len <= sizeof (buf)
280: ? buf
281: : (char *) malloc (msgctxt_len + msgid_len));
282: if (msg_ctxt_id != NULL)
283: #endif
284: {
285: int found_translation;
286: memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
287: msg_ctxt_id[msgctxt_len - 1] = '\004';
288: memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
289: translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
290: found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
291: #if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
292: if (msg_ctxt_id != buf)
293: free (msg_ctxt_id);
294: #endif
295: if (found_translation)
296: return translation;
297: }
298: return (n == 1 ? msgid : msgid_plural);
299: }
300:
301: #endif /* _LIBGETTEXT_H */
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