1 /* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
3 Copyright (C) 2007-2009 Free Software Foundation, Inc.
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 2, or (at your option)
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.
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. */
19 /* Written by Eric Blake. */
22 * ISO C 99 <wchar.h> for platforms that have issues.
23 * <http://www.opengroup.org/susv3xbd/wchar.h.html>
25 * For now, this just ensures proper prerequisite inclusion order and
26 * the declaration of wcwidth().
30 @PRAGMA_SYSTEM_HEADER@
33 #if defined __need_mbstate_t || (defined __hpux && ((defined _INTTYPES_INCLUDED && !defined strtoimax) || defined _GL_JUST_INCLUDE_SYSTEM_WCHAR_H))
34 /* Special invocation convention:
35 - Inside 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>. */
43 #@INCLUDE_NEXT@ @NEXT_WCHAR_H@
46 /* Normal invocation convention. */
50 /* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
52 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
53 included before <wchar.h>. */
58 /* Include the original <wchar.h> if it exists.
59 Some builds of uClibc lack it. */
60 /* The include_next requires a split double-inclusion guard. */
62 # @INCLUDE_NEXT@ @NEXT_WCHAR_H@
68 /* The definition of GL_LINK_WARNING is copied here. */
75 /* Define wint_t. (Also done in wctype.in.h.) */
76 #if !@HAVE_WINT_T@ && !defined wint_t
84 /* Override mbstate_t if it is too small.
85 On IRIX 6.5, sizeof (mbstate_t) == 1, which is not sufficient for
86 implementing mbrtowc for encodings like UTF-8. */
87 #if !(@HAVE_MBSINIT@ && @HAVE_MBRTOWC@) || @REPLACE_MBSTATE_T@
88 typedef int rpl_mbstate_t;
90 # define mbstate_t rpl_mbstate_t
91 # define GNULIB_defined_mbstate_t 1
95 /* Convert a single-byte character to a wide character. */
99 # define btowc rpl_btowc
101 # if !@HAVE_BTOWC@ || @REPLACE_BTOWC@
102 extern wint_t btowc (int c);
104 #elif defined GNULIB_POSIXCHECK
107 (GL_LINK_WARNING ("btowc is unportable - " \
108 "use gnulib module btowc for portability"), \
113 /* Convert a wide character to a single-byte character. */
117 # define wctob rpl_wctob
119 # if (!defined wctob && !@HAVE_DECL_WCTOB@) || @REPLACE_WCTOB@
120 /* wctob is provided by gnulib, or wctob exists but is not declared. */
121 extern int wctob (wint_t wc);
123 #elif defined GNULIB_POSIXCHECK
126 (GL_LINK_WARNING ("wctob is unportable - " \
127 "use gnulib module wctob for portability"), \
132 /* Test whether *PS is in the initial state. */
134 # if @REPLACE_MBSINIT@
136 # define mbsinit rpl_mbsinit
138 # if !@HAVE_MBSINIT@ || @REPLACE_MBSINIT@
139 extern int mbsinit (const mbstate_t *ps);
141 #elif defined GNULIB_POSIXCHECK
143 # define mbsinit(p) \
144 (GL_LINK_WARNING ("mbsinit is unportable - " \
145 "use gnulib module mbsinit for portability"), \
150 /* Convert a multibyte character to a wide character. */
152 # if @REPLACE_MBRTOWC@
154 # define mbrtowc rpl_mbrtowc
156 # if !@HAVE_MBRTOWC@ || @REPLACE_MBRTOWC@
157 extern size_t mbrtowc (wchar_t *pwc, const char *s, size_t n, mbstate_t *ps);
159 #elif defined GNULIB_POSIXCHECK
161 # define mbrtowc(w,s,n,p) \
162 (GL_LINK_WARNING ("mbrtowc is unportable - " \
163 "use gnulib module mbrtowc for portability"), \
164 mbrtowc (w, s, n, p))
168 /* Recognize a multibyte character. */
170 # if @REPLACE_MBRLEN@
172 # define mbrlen rpl_mbrlen
174 # if !@HAVE_MBRLEN@ || @REPLACE_MBRLEN@
175 extern size_t mbrlen (const char *s, size_t n, mbstate_t *ps);
177 #elif defined GNULIB_POSIXCHECK
179 # define mbrlen(s,n,p) \
180 (GL_LINK_WARNING ("mbrlen is unportable - " \
181 "use gnulib module mbrlen for portability"), \
186 /* Convert a string to a wide string. */
187 #if @GNULIB_MBSRTOWCS@
188 # if @REPLACE_MBSRTOWCS@
190 # define mbsrtowcs rpl_mbsrtowcs
192 # if !@HAVE_MBSRTOWCS@ || @REPLACE_MBSRTOWCS@
193 extern size_t mbsrtowcs (wchar_t *dest, const char **srcp, size_t len, mbstate_t *ps);
195 #elif defined GNULIB_POSIXCHECK
197 # define mbsrtowcs(d,s,l,p) \
198 (GL_LINK_WARNING ("mbsrtowcs is unportable - " \
199 "use gnulib module mbsrtowcs for portability"), \
200 mbsrtowcs (d, s, l, p))
204 /* Convert a string to a wide string. */
205 #if @GNULIB_MBSNRTOWCS@
206 # if @REPLACE_MBSNRTOWCS@
208 # define mbsnrtowcs rpl_mbsnrtowcs
210 # if !@HAVE_MBSNRTOWCS@ || @REPLACE_MBSNRTOWCS@
211 extern size_t mbsnrtowcs (wchar_t *dest, const char **srcp, size_t srclen, size_t len, mbstate_t *ps);
213 #elif defined GNULIB_POSIXCHECK
215 # define mbsnrtowcs(d,s,n,l,p) \
216 (GL_LINK_WARNING ("mbsnrtowcs is unportable - " \
217 "use gnulib module mbsnrtowcs for portability"), \
218 mbsnrtowcs (d, s, n, l, p))
222 /* Convert a wide character to a multibyte character. */
224 # if @REPLACE_WCRTOMB@
226 # define wcrtomb rpl_wcrtomb
228 # if !@HAVE_WCRTOMB@ || @REPLACE_WCRTOMB@
229 extern size_t wcrtomb (char *s, wchar_t wc, mbstate_t *ps);
231 #elif defined GNULIB_POSIXCHECK
233 # define wcrtomb(s,w,p) \
234 (GL_LINK_WARNING ("wcrtomb is unportable - " \
235 "use gnulib module wcrtomb for portability"), \
240 /* Convert a wide string to a string. */
241 #if @GNULIB_WCSRTOMBS@
242 # if @REPLACE_WCSRTOMBS@
244 # define wcsrtombs rpl_wcsrtombs
246 # if !@HAVE_WCSRTOMBS@ || @REPLACE_WCSRTOMBS@
247 extern size_t wcsrtombs (char *dest, const wchar_t **srcp, size_t len, mbstate_t *ps);
249 #elif defined GNULIB_POSIXCHECK
251 # define wcsrtombs(d,s,l,p) \
252 (GL_LINK_WARNING ("wcsrtombs is unportable - " \
253 "use gnulib module wcsrtombs for portability"), \
254 wcsrtombs (d, s, l, p))
258 /* Convert a wide string to a string. */
259 #if @GNULIB_WCSNRTOMBS@
260 # if !@HAVE_WCSNRTOMBS@
261 extern size_t wcsnrtombs (char *dest, const wchar_t **srcp, size_t srclen, size_t len, mbstate_t *ps);
263 #elif defined GNULIB_POSIXCHECK
265 # define wcsnrtombs(d,s,n,l,p) \
266 (GL_LINK_WARNING ("wcsnrtombs is unportable - " \
267 "use gnulib module wcsnrtombs for portability"), \
268 wcsnrtombs (d, s, n, l, p))
272 /* Return the number of screen columns needed for WC. */
274 # if @REPLACE_WCWIDTH@
276 # define wcwidth rpl_wcwidth
277 extern int wcwidth (wchar_t);
279 # if !defined wcwidth && !@HAVE_DECL_WCWIDTH@
280 /* wcwidth exists but is not declared. */
281 extern int wcwidth (int /* actually wchar_t */);
284 #elif defined GNULIB_POSIXCHECK
286 # define wcwidth(w) \
287 (GL_LINK_WARNING ("wcwidth is unportable - " \
288 "use gnulib module wcwidth for portability"), \
297 #endif /* _GL_WCHAR_H */
298 #endif /* _GL_WCHAR_H */