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comparison lib/wchar.in.h @ 272:d5392bb5da3c 2.5

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date Sun, 16 Aug 2009 17:16:49 +0000
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271:3b793ba7a6c6 272:d5392bb5da3c
1 /* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
2
3 Copyright (C) 2007-2008 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 #ifdef __need_mbstate_t
34 /* Special invocation convention inside uClibc header files. */
35
36 #@INCLUDE_NEXT@ @NEXT_WCHAR_H@
37
38 #else
39 /* Normal invocation convention. */
40
41 #ifndef _GL_WCHAR_H
42
43 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
44 <wchar.h>.
45 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
46 included before <wchar.h>. */
47 #include <stddef.h>
48 #include <stdio.h>
49 #include <time.h>
50
51 /* Include the original <wchar.h> if it exists.
52 Some builds of uClibc lack it. */
53 /* The include_next requires a split double-inclusion guard. */
54 #if @HAVE_WCHAR_H@
55 # @INCLUDE_NEXT@ @NEXT_WCHAR_H@
56 #endif
57
58 #ifndef _GL_WCHAR_H
59 #define _GL_WCHAR_H
60
61 /* The definition of GL_LINK_WARNING is copied here. */
62
63 #ifdef __cplusplus
64 extern "C" {
65 #endif
66
67
68 /* Define wint_t. (Also done in wctype.in.h.) */
69 #if !@HAVE_WINT_T@ && !defined wint_t
70 # define wint_t int
71 # ifndef WEOF
72 # define WEOF -1
73 # endif
74 #endif
75
76
77 /* Override mbstate_t if it is too small.
78 On IRIX 6.5, sizeof (mbstate_t) == 1, which is not sufficient for
79 implementing mbrtowc for encodings like UTF-8. */
80 #if !(@HAVE_MBSINIT@ && @HAVE_MBRTOWC@) || @REPLACE_MBSTATE_T@
81 typedef int rpl_mbstate_t;
82 # undef mbstate_t
83 # define mbstate_t rpl_mbstate_t
84 # define GNULIB_defined_mbstate_t 1
85 #endif
86
87
88 /* Convert a single-byte character to a wide character. */
89 #if @GNULIB_BTOWC@
90 # if @REPLACE_BTOWC@
91 # undef btowc
92 # define btowc rpl_btowc
93 # endif
94 # if !@HAVE_BTOWC@ || @REPLACE_BTOWC@
95 extern wint_t btowc (int c);
96 # endif
97 #elif defined GNULIB_POSIXCHECK
98 # undef btowc
99 # define btowc(c) \
100 (GL_LINK_WARNING ("btowc is unportable - " \
101 "use gnulib module btowc for portability"), \
102 btowc (c))
103 #endif
104
105
106 /* Convert a wide character to a single-byte character. */
107 #if @GNULIB_WCTOB@
108 # if @REPLACE_WCTOB@
109 # undef wctob
110 # define wctob rpl_wctob
111 # endif
112 # if (!defined wctob && !@HAVE_DECL_WCTOB@) || @REPLACE_WCTOB@
113 /* wctob is provided by gnulib, or wctob exists but is not declared. */
114 extern int wctob (wint_t wc);
115 # endif
116 #elif defined GNULIB_POSIXCHECK
117 # undef wctob
118 # define wctob(w) \
119 (GL_LINK_WARNING ("wctob is unportable - " \
120 "use gnulib module wctob for portability"), \
121 wctob (w))
122 #endif
123
124
125 /* Test whether *PS is in the initial state. */
126 #if @GNULIB_MBSINIT@
127 # if @REPLACE_MBSINIT@
128 # undef mbsinit
129 # define mbsinit rpl_mbsinit
130 # endif
131 # if !@HAVE_MBSINIT@ || @REPLACE_MBSINIT@
132 extern int mbsinit (const mbstate_t *ps);
133 # endif
134 #elif defined GNULIB_POSIXCHECK
135 # undef mbsinit
136 # define mbsinit(p) \
137 (GL_LINK_WARNING ("mbsinit is unportable - " \
138 "use gnulib module mbsinit for portability"), \
139 mbsinit (p))
140 #endif
141
142
143 /* Convert a multibyte character to a wide character. */
144 #if @GNULIB_MBRTOWC@
145 # if @REPLACE_MBRTOWC@
146 # undef mbrtowc
147 # define mbrtowc rpl_mbrtowc
148 # endif
149 # if !@HAVE_MBRTOWC@ || @REPLACE_MBRTOWC@
150 extern size_t mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps);
151 # endif
152 #elif defined GNULIB_POSIXCHECK
153 # undef mbrtowc
154 # define mbrtowc(w,s,n,p) \
155 (GL_LINK_WARNING ("mbrtowc is unportable - " \
156 "use gnulib module mbrtowc for portability"), \
157 mbrtowc (w, s, n, p))
158 #endif
159
160
161 /* Recognize a multibyte character. */
162 #if @GNULIB_MBRLEN@
163 # if @REPLACE_MBRLEN@
164 # undef mbrlen
165 # define mbrlen rpl_mbrlen
166 # endif
167 # if !@HAVE_MBRLEN@ || @REPLACE_MBRLEN@
168 extern size_t mbrlen (const char *s, size_t n, mbstate_t *ps);
169 # endif
170 #elif defined GNULIB_POSIXCHECK
171 # undef mbrlen
172 # define mbrlen(s,n,p) \
173 (GL_LINK_WARNING ("mbrlen is unportable - " \
174 "use gnulib module mbrlen for portability"), \
175 mbrlen (s, n, p))
176 #endif
177
178
179 /* Convert a string to a wide string. */
180 #if @GNULIB_MBSRTOWCS@
181 # if @REPLACE_MBSRTOWCS@
182 # undef mbsrtowcs
183 # define mbsrtowcs rpl_mbsrtowcs
184 # endif
185 # if !@HAVE_MBSRTOWCS@ || @REPLACE_MBSRTOWCS@
186 extern size_t mbsrtowcs (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps);
187 # endif
188 #elif defined GNULIB_POSIXCHECK
189 # undef mbsrtowcs
190 # define mbsrtowcs(d,s,l,p) \
191 (GL_LINK_WARNING ("mbsrtowcs is unportable - " \
192 "use gnulib module mbsrtowcs for portability"), \
193 mbsrtowcs (d, s, l, p))
194 #endif
195
196
197 /* Convert a string to a wide string. */
198 #if @GNULIB_MBSNRTOWCS@
199 # if @REPLACE_MBSNRTOWCS@
200 # undef mbsnrtowcs
201 # define mbsnrtowcs rpl_mbsnrtowcs
202 # endif
203 # if !@HAVE_MBSNRTOWCS@ || @REPLACE_MBSNRTOWCS@
204 extern size_t mbsnrtowcs (wchar_t *dest, const char **srcp, size_t srclen, size_t len, mbstate_t *ps);
205 # endif
206 #elif defined GNULIB_POSIXCHECK
207 # undef mbsnrtowcs
208 # define mbsnrtowcs(d,s,n,l,p) \
209 (GL_LINK_WARNING ("mbsnrtowcs is unportable - " \
210 "use gnulib module mbsnrtowcs for portability"), \
211 mbsnrtowcs (d, s, n, l, p))
212 #endif
213
214
215 /* Convert a wide character to a multibyte character. */
216 #if @GNULIB_WCRTOMB@
217 # if @REPLACE_WCRTOMB@
218 # undef wcrtomb
219 # define wcrtomb rpl_wcrtomb
220 # endif
221 # if !@HAVE_WCRTOMB@ || @REPLACE_WCRTOMB@
222 extern size_t wcrtomb (char *s, wchar_t wc, mbstate_t *ps);
223 # endif
224 #elif defined GNULIB_POSIXCHECK
225 # undef wcrtomb
226 # define wcrtomb(s,w,p) \
227 (GL_LINK_WARNING ("wcrtomb is unportable - " \
228 "use gnulib module wcrtomb for portability"), \
229 wcrtomb (s, w, p))
230 #endif
231
232
233 /* Convert a wide string to a string. */
234 #if @GNULIB_WCSRTOMBS@
235 # if @REPLACE_WCSRTOMBS@
236 # undef wcsrtombs
237 # define wcsrtombs rpl_wcsrtombs
238 # endif
239 # if !@HAVE_WCSRTOMBS@ || @REPLACE_WCSRTOMBS@
240 extern size_t wcsrtombs (char *dest, const wchar_t **srcp, size_t len, mbstate_t *ps);
241 # endif
242 #elif defined GNULIB_POSIXCHECK
243 # undef wcsrtombs
244 # define wcsrtombs(d,s,l,p) \
245 (GL_LINK_WARNING ("wcsrtombs is unportable - " \
246 "use gnulib module wcsrtombs for portability"), \
247 wcsrtombs (d, s, l, p))
248 #endif
249
250
251 /* Convert a wide string to a string. */
252 #if @GNULIB_WCSNRTOMBS@
253 # if !@HAVE_WCSNRTOMBS@
254 extern size_t wcsnrtombs (char *dest, const wchar_t **srcp, size_t srclen, size_t len, mbstate_t *ps);
255 # endif
256 #elif defined GNULIB_POSIXCHECK
257 # undef wcsnrtombs
258 # define wcsnrtombs(d,s,n,l,p) \
259 (GL_LINK_WARNING ("wcsnrtombs is unportable - " \
260 "use gnulib module wcsnrtombs for portability"), \
261 wcsnrtombs (d, s, n, l, p))
262 #endif
263
264
265 /* Return the number of screen columns needed for WC. */
266 #if @GNULIB_WCWIDTH@
267 # if @REPLACE_WCWIDTH@
268 # undef wcwidth
269 # define wcwidth rpl_wcwidth
270 extern int wcwidth (wchar_t);
271 # else
272 # if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
273 /* wcwidth exists but is not declared. */
274 extern int wcwidth (int /* actually wchar_t */);
275 # endif
276 # endif
277 #elif defined GNULIB_POSIXCHECK
278 # undef wcwidth
279 # define wcwidth(w) \
280 (GL_LINK_WARNING ("wcwidth is unportable - " \
281 "use gnulib module wcwidth for portability"), \
282 wcwidth (w))
283 #endif
284
285
286 #ifdef __cplusplus
287 }
288 #endif
289
290 #endif /* _GL_WCHAR_H */
291 #endif /* _GL_WCHAR_H */
292 #endif