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1 /* A substitute for ISO C99 <wchar.h>, for platforms that have issues. | |
2 | |
3 Copyright (C) 2007-2011 Free Software 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 | |
16 along 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 /* Written by Eric Blake. */ | |
20 | |
21 /* | |
22 * ISO C 99 <wchar.h> for platforms that have issues. | |
23 * <http://www.opengroup.org/susv3xbd/wchar.h.html> | |
24 * | |
25 * For now, this just ensures proper prerequisite inclusion order and | |
26 * the declaration of wcwidth(). | |
27 */ | |
28 | |
29 #if __GNUC__ >= 3 | |
30 @PRAGMA_SYSTEM_HEADER@ | |
31 #endif | |
32 | |
33 #if defined __need_mbstate_t || defined __need_wint_t || (defined __hpux && ((de
fined _INTTYPES_INCLUDED && !defined strtoimax) || defined _GL_JUST_INCLUDE_SYST
EM_WCHAR_H)) || defined _GL_ALREADY_INCLUDING_WCHAR_H | |
34 /* Special invocation convention: | |
35 - Inside glibc and uClibc header files. | |
36 - On HP-UX 11.00 we have a sequence of nested includes | |
37 <wchar.h> -> <stdlib.h> -> <stdint.h>, and the latter includes <wchar.h>, | |
38 once indirectly <stdint.h> -> <sys/types.h> -> <inttypes.h> -> <wchar.h> | |
39 and once directly. In both situations 'wint_t' is not yet defined, | |
40 therefore we cannot provide the function overrides; instead include only | |
41 the system's <wchar.h>. | |
42 - On IRIX 6.5, similarly, we have an include <wchar.h> -> <wctype.h>, and | |
43 the latter includes <wchar.h>. But here, we have no way to detect whether | |
44 <wctype.h> is completely included or is still being included. */ | |
45 | |
46 #@INCLUDE_NEXT@ @NEXT_WCHAR_H@ | |
47 | |
48 #else | |
49 /* Normal invocation convention. */ | |
50 | |
51 #ifndef _GL_WCHAR_H | |
52 | |
53 #define _GL_ALREADY_INCLUDING_WCHAR_H | |
54 | |
55 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before | |
56 <wchar.h>. | |
57 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be | |
58 included before <wchar.h>. | |
59 But avoid namespace pollution on glibc systems. */ | |
60 #ifndef __GLIBC__ | |
61 # include <stddef.h> | |
62 # include <stdio.h> | |
63 # include <time.h> | |
64 #endif | |
65 | |
66 /* Include the original <wchar.h> if it exists. | |
67 Some builds of uClibc lack it. */ | |
68 /* The include_next requires a split double-inclusion guard. */ | |
69 #if @HAVE_WCHAR_H@ | |
70 # @INCLUDE_NEXT@ @NEXT_WCHAR_H@ | |
71 #endif | |
72 | |
73 #undef _GL_ALREADY_INCLUDING_WCHAR_H | |
74 | |
75 #ifndef _GL_WCHAR_H | |
76 #define _GL_WCHAR_H | |
77 | |
78 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ | |
79 | |
80 /* The definition of _GL_ARG_NONNULL is copied here. */ | |
81 | |
82 /* The definition of _GL_WARN_ON_USE is copied here. */ | |
83 | |
84 | |
85 /* Define wint_t and WEOF. (Also done in wctype.in.h.) */ | |
86 #if !@HAVE_WINT_T@ && !defined wint_t | |
87 # define wint_t int | |
88 # ifndef WEOF | |
89 # define WEOF -1 | |
90 # endif | |
91 #else | |
92 # ifndef WEOF | |
93 # define WEOF ((wint_t) -1) | |
94 # endif | |
95 #endif | |
96 | |
97 | |
98 /* Override mbstate_t if it is too small. | |
99 On IRIX 6.5, sizeof (mbstate_t) == 1, which is not sufficient for | |
100 implementing mbrtowc for encodings like UTF-8. */ | |
101 #if !(@HAVE_MBSINIT@ && @HAVE_MBRTOWC@) || @REPLACE_MBSTATE_T@ | |
102 typedef int rpl_mbstate_t; | |
103 # undef mbstate_t | |
104 # define mbstate_t rpl_mbstate_t | |
105 # define GNULIB_defined_mbstate_t 1 | |
106 #endif | |
107 | |
108 | |
109 /* Convert a single-byte character to a wide character. */ | |
110 #if @GNULIB_BTOWC@ | |
111 # if @REPLACE_BTOWC@ | |
112 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
113 # undef btowc | |
114 # define btowc rpl_btowc | |
115 # endif | |
116 _GL_FUNCDECL_RPL (btowc, wint_t, (int c)); | |
117 _GL_CXXALIAS_RPL (btowc, wint_t, (int c)); | |
118 # else | |
119 # if !@HAVE_BTOWC@ | |
120 _GL_FUNCDECL_SYS (btowc, wint_t, (int c)); | |
121 # endif | |
122 _GL_CXXALIAS_SYS (btowc, wint_t, (int c)); | |
123 # endif | |
124 _GL_CXXALIASWARN (btowc); | |
125 #elif defined GNULIB_POSIXCHECK | |
126 # undef btowc | |
127 # if HAVE_RAW_DECL_BTOWC | |
128 _GL_WARN_ON_USE (btowc, "btowc is unportable - " | |
129 "use gnulib module btowc for portability"); | |
130 # endif | |
131 #endif | |
132 | |
133 | |
134 /* Convert a wide character to a single-byte character. */ | |
135 #if @GNULIB_WCTOB@ | |
136 # if @REPLACE_WCTOB@ | |
137 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
138 # undef wctob | |
139 # define wctob rpl_wctob | |
140 # endif | |
141 _GL_FUNCDECL_RPL (wctob, int, (wint_t wc)); | |
142 _GL_CXXALIAS_RPL (wctob, int, (wint_t wc)); | |
143 # else | |
144 # if !defined wctob && !@HAVE_DECL_WCTOB@ | |
145 /* wctob is provided by gnulib, or wctob exists but is not declared. */ | |
146 _GL_FUNCDECL_SYS (wctob, int, (wint_t wc)); | |
147 # endif | |
148 _GL_CXXALIAS_SYS (wctob, int, (wint_t wc)); | |
149 # endif | |
150 _GL_CXXALIASWARN (wctob); | |
151 #elif defined GNULIB_POSIXCHECK | |
152 # undef wctob | |
153 # if HAVE_RAW_DECL_WCTOB | |
154 _GL_WARN_ON_USE (wctob, "wctob is unportable - " | |
155 "use gnulib module wctob for portability"); | |
156 # endif | |
157 #endif | |
158 | |
159 | |
160 /* Test whether *PS is in the initial state. */ | |
161 #if @GNULIB_MBSINIT@ | |
162 # if @REPLACE_MBSINIT@ | |
163 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
164 # undef mbsinit | |
165 # define mbsinit rpl_mbsinit | |
166 # endif | |
167 _GL_FUNCDECL_RPL (mbsinit, int, (const mbstate_t *ps)); | |
168 _GL_CXXALIAS_RPL (mbsinit, int, (const mbstate_t *ps)); | |
169 # else | |
170 # if !@HAVE_MBSINIT@ | |
171 _GL_FUNCDECL_SYS (mbsinit, int, (const mbstate_t *ps)); | |
172 # endif | |
173 _GL_CXXALIAS_SYS (mbsinit, int, (const mbstate_t *ps)); | |
174 # endif | |
175 _GL_CXXALIASWARN (mbsinit); | |
176 #elif defined GNULIB_POSIXCHECK | |
177 # undef mbsinit | |
178 # if HAVE_RAW_DECL_MBSINIT | |
179 _GL_WARN_ON_USE (mbsinit, "mbsinit is unportable - " | |
180 "use gnulib module mbsinit for portability"); | |
181 # endif | |
182 #endif | |
183 | |
184 | |
185 /* Convert a multibyte character to a wide character. */ | |
186 #if @GNULIB_MBRTOWC@ | |
187 # if @REPLACE_MBRTOWC@ | |
188 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
189 # undef mbrtowc | |
190 # define mbrtowc rpl_mbrtowc | |
191 # endif | |
192 _GL_FUNCDECL_RPL (mbrtowc, size_t, | |
193 (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)); | |
194 _GL_CXXALIAS_RPL (mbrtowc, size_t, | |
195 (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)); | |
196 # else | |
197 # if !@HAVE_MBRTOWC@ | |
198 _GL_FUNCDECL_SYS (mbrtowc, size_t, | |
199 (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)); | |
200 # endif | |
201 _GL_CXXALIAS_SYS (mbrtowc, size_t, | |
202 (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)); | |
203 # endif | |
204 _GL_CXXALIASWARN (mbrtowc); | |
205 #elif defined GNULIB_POSIXCHECK | |
206 # undef mbrtowc | |
207 # if HAVE_RAW_DECL_MBRTOWC | |
208 _GL_WARN_ON_USE (mbrtowc, "mbrtowc is unportable - " | |
209 "use gnulib module mbrtowc for portability"); | |
210 # endif | |
211 #endif | |
212 | |
213 | |
214 /* Recognize a multibyte character. */ | |
215 #if @GNULIB_MBRLEN@ | |
216 # if @REPLACE_MBRLEN@ | |
217 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
218 # undef mbrlen | |
219 # define mbrlen rpl_mbrlen | |
220 # endif | |
221 _GL_FUNCDECL_RPL (mbrlen, size_t, (const char *s, size_t n, mbstate_t *ps)); | |
222 _GL_CXXALIAS_RPL (mbrlen, size_t, (const char *s, size_t n, mbstate_t *ps)); | |
223 # else | |
224 # if !@HAVE_MBRLEN@ | |
225 _GL_FUNCDECL_SYS (mbrlen, size_t, (const char *s, size_t n, mbstate_t *ps)); | |
226 # endif | |
227 _GL_CXXALIAS_SYS (mbrlen, size_t, (const char *s, size_t n, mbstate_t *ps)); | |
228 # endif | |
229 _GL_CXXALIASWARN (mbrlen); | |
230 #elif defined GNULIB_POSIXCHECK | |
231 # undef mbrlen | |
232 # if HAVE_RAW_DECL_MBRLEN | |
233 _GL_WARN_ON_USE (mbrlen, "mbrlen is unportable - " | |
234 "use gnulib module mbrlen for portability"); | |
235 # endif | |
236 #endif | |
237 | |
238 | |
239 /* Convert a string to a wide string. */ | |
240 #if @GNULIB_MBSRTOWCS@ | |
241 # if @REPLACE_MBSRTOWCS@ | |
242 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
243 # undef mbsrtowcs | |
244 # define mbsrtowcs rpl_mbsrtowcs | |
245 # endif | |
246 _GL_FUNCDECL_RPL (mbsrtowcs, size_t, | |
247 (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps) | |
248 _GL_ARG_NONNULL ((2))); | |
249 _GL_CXXALIAS_RPL (mbsrtowcs, size_t, | |
250 (wchar_t *dest, const char **srcp, size_t len, | |
251 mbstate_t *ps)); | |
252 # else | |
253 # if !@HAVE_MBSRTOWCS@ | |
254 _GL_FUNCDECL_SYS (mbsrtowcs, size_t, | |
255 (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps) | |
256 _GL_ARG_NONNULL ((2))); | |
257 # endif | |
258 _GL_CXXALIAS_SYS (mbsrtowcs, size_t, | |
259 (wchar_t *dest, const char **srcp, size_t len, | |
260 mbstate_t *ps)); | |
261 # endif | |
262 _GL_CXXALIASWARN (mbsrtowcs); | |
263 #elif defined GNULIB_POSIXCHECK | |
264 # undef mbsrtowcs | |
265 # if HAVE_RAW_DECL_MBSRTOWCS | |
266 _GL_WARN_ON_USE (mbsrtowcs, "mbsrtowcs is unportable - " | |
267 "use gnulib module mbsrtowcs for portability"); | |
268 # endif | |
269 #endif | |
270 | |
271 | |
272 /* Convert a string to a wide string. */ | |
273 #if @GNULIB_MBSNRTOWCS@ | |
274 # if @REPLACE_MBSNRTOWCS@ | |
275 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
276 # undef mbsnrtowcs | |
277 # define mbsnrtowcs rpl_mbsnrtowcs | |
278 # endif | |
279 _GL_FUNCDECL_RPL (mbsnrtowcs, size_t, | |
280 (wchar_t *dest, const char **srcp, size_t srclen, size_t len, | |
281 mbstate_t *ps) | |
282 _GL_ARG_NONNULL ((2))); | |
283 _GL_CXXALIAS_RPL (mbsnrtowcs, size_t, | |
284 (wchar_t *dest, const char **srcp, size_t srclen, size_t len, | |
285 mbstate_t *ps)); | |
286 # else | |
287 # if !@HAVE_MBSNRTOWCS@ | |
288 _GL_FUNCDECL_SYS (mbsnrtowcs, size_t, | |
289 (wchar_t *dest, const char **srcp, size_t srclen, size_t len, | |
290 mbstate_t *ps) | |
291 _GL_ARG_NONNULL ((2))); | |
292 # endif | |
293 _GL_CXXALIAS_SYS (mbsnrtowcs, size_t, | |
294 (wchar_t *dest, const char **srcp, size_t srclen, size_t len, | |
295 mbstate_t *ps)); | |
296 # endif | |
297 _GL_CXXALIASWARN (mbsnrtowcs); | |
298 #elif defined GNULIB_POSIXCHECK | |
299 # undef mbsnrtowcs | |
300 # if HAVE_RAW_DECL_MBSNRTOWCS | |
301 _GL_WARN_ON_USE (mbsnrtowcs, "mbsnrtowcs is unportable - " | |
302 "use gnulib module mbsnrtowcs for portability"); | |
303 # endif | |
304 #endif | |
305 | |
306 | |
307 /* Convert a wide character to a multibyte character. */ | |
308 #if @GNULIB_WCRTOMB@ | |
309 # if @REPLACE_WCRTOMB@ | |
310 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
311 # undef wcrtomb | |
312 # define wcrtomb rpl_wcrtomb | |
313 # endif | |
314 _GL_FUNCDECL_RPL (wcrtomb, size_t, (char *s, wchar_t wc, mbstate_t *ps)); | |
315 _GL_CXXALIAS_RPL (wcrtomb, size_t, (char *s, wchar_t wc, mbstate_t *ps)); | |
316 # else | |
317 # if !@HAVE_WCRTOMB@ | |
318 _GL_FUNCDECL_SYS (wcrtomb, size_t, (char *s, wchar_t wc, mbstate_t *ps)); | |
319 # endif | |
320 _GL_CXXALIAS_SYS (wcrtomb, size_t, (char *s, wchar_t wc, mbstate_t *ps)); | |
321 # endif | |
322 _GL_CXXALIASWARN (wcrtomb); | |
323 #elif defined GNULIB_POSIXCHECK | |
324 # undef wcrtomb | |
325 # if HAVE_RAW_DECL_WCRTOMB | |
326 _GL_WARN_ON_USE (wcrtomb, "wcrtomb is unportable - " | |
327 "use gnulib module wcrtomb for portability"); | |
328 # endif | |
329 #endif | |
330 | |
331 | |
332 /* Convert a wide string to a string. */ | |
333 #if @GNULIB_WCSRTOMBS@ | |
334 # if @REPLACE_WCSRTOMBS@ | |
335 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
336 # undef wcsrtombs | |
337 # define wcsrtombs rpl_wcsrtombs | |
338 # endif | |
339 _GL_FUNCDECL_RPL (wcsrtombs, size_t, | |
340 (char *dest, const wchar_t **srcp, size_t len, mbstate_t *ps) | |
341 _GL_ARG_NONNULL ((2))); | |
342 _GL_CXXALIAS_RPL (wcsrtombs, size_t, | |
343 (char *dest, const wchar_t **srcp, size_t len, | |
344 mbstate_t *ps)); | |
345 # else | |
346 # if !@HAVE_WCSRTOMBS@ | |
347 _GL_FUNCDECL_SYS (wcsrtombs, size_t, | |
348 (char *dest, const wchar_t **srcp, size_t len, mbstate_t *ps) | |
349 _GL_ARG_NONNULL ((2))); | |
350 # endif | |
351 _GL_CXXALIAS_SYS (wcsrtombs, size_t, | |
352 (char *dest, const wchar_t **srcp, size_t len, | |
353 mbstate_t *ps)); | |
354 # endif | |
355 _GL_CXXALIASWARN (wcsrtombs); | |
356 #elif defined GNULIB_POSIXCHECK | |
357 # undef wcsrtombs | |
358 # if HAVE_RAW_DECL_WCSRTOMBS | |
359 _GL_WARN_ON_USE (wcsrtombs, "wcsrtombs is unportable - " | |
360 "use gnulib module wcsrtombs for portability"); | |
361 # endif | |
362 #endif | |
363 | |
364 | |
365 /* Convert a wide string to a string. */ | |
366 #if @GNULIB_WCSNRTOMBS@ | |
367 # if @REPLACE_WCSNRTOMBS@ | |
368 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
369 # undef wcsnrtombs | |
370 # define wcsnrtombs rpl_wcsnrtombs | |
371 # endif | |
372 _GL_FUNCDECL_RPL (wcsnrtombs, size_t, | |
373 (char *dest, const wchar_t **srcp, size_t srclen, size_t len, | |
374 mbstate_t *ps) | |
375 _GL_ARG_NONNULL ((2))); | |
376 _GL_CXXALIAS_RPL (wcsnrtombs, size_t, | |
377 (char *dest, const wchar_t **srcp, size_t srclen, size_t len, | |
378 mbstate_t *ps)); | |
379 # else | |
380 # if !@HAVE_WCSNRTOMBS@ | |
381 _GL_FUNCDECL_SYS (wcsnrtombs, size_t, | |
382 (char *dest, const wchar_t **srcp, size_t srclen, size_t len, | |
383 mbstate_t *ps) | |
384 _GL_ARG_NONNULL ((2))); | |
385 # endif | |
386 _GL_CXXALIAS_SYS (wcsnrtombs, size_t, | |
387 (char *dest, const wchar_t **srcp, size_t srclen, size_t len, | |
388 mbstate_t *ps)); | |
389 # endif | |
390 _GL_CXXALIASWARN (wcsnrtombs); | |
391 #elif defined GNULIB_POSIXCHECK | |
392 # undef wcsnrtombs | |
393 # if HAVE_RAW_DECL_WCSNRTOMBS | |
394 _GL_WARN_ON_USE (wcsnrtombs, "wcsnrtombs is unportable - " | |
395 "use gnulib module wcsnrtombs for portability"); | |
396 # endif | |
397 #endif | |
398 | |
399 | |
400 /* Return the number of screen columns needed for WC. */ | |
401 #if @GNULIB_WCWIDTH@ | |
402 # if @REPLACE_WCWIDTH@ | |
403 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
404 # undef wcwidth | |
405 # define wcwidth rpl_wcwidth | |
406 # endif | |
407 _GL_FUNCDECL_RPL (wcwidth, int, (wchar_t)); | |
408 _GL_CXXALIAS_RPL (wcwidth, int, (wchar_t)); | |
409 # else | |
410 # if !@HAVE_DECL_WCWIDTH@ | |
411 /* wcwidth exists but is not declared. */ | |
412 _GL_FUNCDECL_SYS (wcwidth, int, (wchar_t)); | |
413 # endif | |
414 _GL_CXXALIAS_SYS (wcwidth, int, (wchar_t)); | |
415 # endif | |
416 _GL_CXXALIASWARN (wcwidth); | |
417 #elif defined GNULIB_POSIXCHECK | |
418 # undef wcwidth | |
419 # if HAVE_RAW_DECL_WCWIDTH | |
420 _GL_WARN_ON_USE (wcwidth, "wcwidth is unportable - " | |
421 "use gnulib module wcwidth for portability"); | |
422 # endif | |
423 #endif | |
424 | |
425 | |
426 #endif /* _GL_WCHAR_H */ | |
427 #endif /* _GL_WCHAR_H */ | |
428 #endif | |
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