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e65fc94b LC |
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 Lesser General Public License as published by | |
7 | 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 | |
13 | GNU Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser 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 | ||
aa7a939c | 29 | #if __GNUC__ >= 3 |
e65fc94b | 30 | @PRAGMA_SYSTEM_HEADER@ |
aa7a939c | 31 | #endif |
e65fc94b LC |
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 | ||
aa7a939c LC |
68 | /* Define wint_t. (Also done in wctype.in.h.) */ |
69 | #if !@HAVE_WINT_T@ && !defined wint_t | |
70 | # define wint_t int | |
4a462e35 NJ |
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)) | |
aa7a939c LC |
262 | #endif |
263 | ||
264 | ||
e65fc94b LC |
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 |