1 /* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
3 Copyright (C) 2006-2010 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 Bruno Haible and Paul Eggert. */
22 * ISO C 99 <wctype.h> for platforms that lack it.
23 * <http://www.opengroup.org/susv3xbd/wctype.h.html>
25 * iswctype, towctrans, towlower, towupper, wctrans, wctype,
26 * wctrans_t, and wctype_t are not yet implemented.
32 @PRAGMA_SYSTEM_HEADER@
36 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.
37 Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
39 BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
40 included before <wchar.h>. */
47 /* Include the original <wctype.h> if it exists.
48 BeOS 5 has the functions but no <wctype.h>. */
49 /* The include_next requires a split double-inclusion guard. */
51 # @INCLUDE_NEXT@ @NEXT_WCTYPE_H@
57 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
59 /* The definition of _GL_WARN_ON_USE is copied here. */
61 /* Define wint_t. (Also done in wchar.in.h.) */
62 #if !@HAVE_WINT_T@ && !defined wint_t
70 /* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
71 Linux libc5 has <wctype.h> and the functions but they are broken.
72 Assume all 12 functions are implemented the same way, or not at all. */
73 #if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
75 /* IRIX 5.3 has macros but no functions, its isw* macros refer to an
76 undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
77 refer to system functions like _iswctype that are not in the
78 standard C library. Rather than try to get ancient buggy
79 implementations like this to work, just disable them. */
95 /* Linux libc5 has <wctype.h> and the functions but they are broken. */
96 # if @REPLACE_ISWCNTRL@
97 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
98 # define iswalnum rpl_iswalnum
99 # define iswalpha rpl_iswalpha
100 # define iswblank rpl_iswblank
101 # define iswcntrl rpl_iswcntrl
102 # define iswdigit rpl_iswdigit
103 # define iswgraph rpl_iswgraph
104 # define iswlower rpl_iswlower
105 # define iswprint rpl_iswprint
106 # define iswpunct rpl_iswpunct
107 # define iswspace rpl_iswspace
108 # define iswupper rpl_iswupper
109 # define iswxdigit rpl_iswxdigit
110 # define towlower rpl_towlower
111 # define towupper rpl_towupper
116 # if @REPLACE_ISWCNTRL@
123 return ((wc >= '0' && wc <= '9')
124 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
128 # if @REPLACE_ISWCNTRL@
135 return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
139 # if @REPLACE_ISWCNTRL@
146 return wc == ' ' || wc == '\t';
150 # if @REPLACE_ISWCNTRL@
157 return (wc & ~0x1f) == 0 || wc == 0x7f;
161 # if @REPLACE_ISWCNTRL@
168 return wc >= '0' && wc <= '9';
172 # if @REPLACE_ISWCNTRL@
179 return wc >= '!' && wc <= '~';
183 # if @REPLACE_ISWCNTRL@
190 return wc >= 'a' && wc <= 'z';
194 # if @REPLACE_ISWCNTRL@
201 return wc >= ' ' && wc <= '~';
205 # if @REPLACE_ISWCNTRL@
212 return (wc >= '!' && wc <= '~'
213 && !((wc >= '0' && wc <= '9')
214 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
218 # if @REPLACE_ISWCNTRL@
225 return (wc == ' ' || wc == '\t'
226 || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
230 # if @REPLACE_ISWCNTRL@
237 return wc >= 'A' && wc <= 'Z';
241 # if @REPLACE_ISWCNTRL@
248 return ((wc >= '0' && wc <= '9')
249 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
253 # if @REPLACE_ISWCNTRL@
260 return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
264 # if @REPLACE_ISWCNTRL@
271 return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
274 #endif /* ! HAVE_ISWCNTRL || REPLACE_ISWCNTRL */
276 #if defined __MINGW32__
278 /* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
279 The functions towlower and towupper are implemented in the MSVCRT library
280 to take a wchar_t argument and return a wchar_t result. mingw declares
281 these functions to take a wint_t argument and return a wint_t result.
283 1. When the user passes an argument outside the range 0x0000..0xFFFF, the
284 function will look only at the lower 16 bits. This is allowed according
286 2. The return value is returned in the lower 16 bits of the result register.
287 The upper 16 bits are random: whatever happened to be in that part of the
288 result register. We need to fix this by adding a zero-extend from
289 wchar_t to wint_t after the call. */
292 rpl_towlower (wint_t wc)
294 return (wint_t) (wchar_t) towlower (wc);
296 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
297 # define towlower rpl_towlower
301 rpl_towupper (wint_t wc)
303 return (wint_t) (wchar_t) towupper (wc);
305 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
306 # define towupper rpl_towupper
309 #endif /* __MINGW32__ */
311 #if @REPLACE_ISWCNTRL@
312 _GL_CXXALIAS_RPL (iswalnum, int, (wint_t wc));
313 _GL_CXXALIAS_RPL (iswalpha, int, (wint_t wc));
314 _GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
315 _GL_CXXALIAS_RPL (iswcntrl, int, (wint_t wc));
316 _GL_CXXALIAS_RPL (iswdigit, int, (wint_t wc));
317 _GL_CXXALIAS_RPL (iswgraph, int, (wint_t wc));
318 _GL_CXXALIAS_RPL (iswlower, int, (wint_t wc));
319 _GL_CXXALIAS_RPL (iswprint, int, (wint_t wc));
320 _GL_CXXALIAS_RPL (iswpunct, int, (wint_t wc));
321 _GL_CXXALIAS_RPL (iswspace, int, (wint_t wc));
322 _GL_CXXALIAS_RPL (iswupper, int, (wint_t wc));
323 _GL_CXXALIAS_RPL (iswxdigit, int, (wint_t wc));
325 _GL_CXXALIAS_SYS (iswalnum, int, (wint_t wc));
326 _GL_CXXALIAS_SYS (iswalpha, int, (wint_t wc));
327 _GL_CXXALIAS_SYS (iswblank, int, (wint_t wc));
328 _GL_CXXALIAS_SYS (iswcntrl, int, (wint_t wc));
329 _GL_CXXALIAS_SYS (iswdigit, int, (wint_t wc));
330 _GL_CXXALIAS_SYS (iswgraph, int, (wint_t wc));
331 _GL_CXXALIAS_SYS (iswlower, int, (wint_t wc));
332 _GL_CXXALIAS_SYS (iswprint, int, (wint_t wc));
333 _GL_CXXALIAS_SYS (iswpunct, int, (wint_t wc));
334 _GL_CXXALIAS_SYS (iswspace, int, (wint_t wc));
335 _GL_CXXALIAS_SYS (iswupper, int, (wint_t wc));
336 _GL_CXXALIAS_SYS (iswxdigit, int, (wint_t wc));
338 _GL_CXXALIASWARN (iswalnum);
339 _GL_CXXALIASWARN (iswalpha);
340 _GL_CXXALIASWARN (iswblank);
341 _GL_CXXALIASWARN (iswcntrl);
342 _GL_CXXALIASWARN (iswdigit);
343 _GL_CXXALIASWARN (iswgraph);
344 _GL_CXXALIASWARN (iswlower);
345 _GL_CXXALIASWARN (iswprint);
346 _GL_CXXALIASWARN (iswpunct);
347 _GL_CXXALIASWARN (iswspace);
348 _GL_CXXALIASWARN (iswupper);
349 _GL_CXXALIASWARN (iswxdigit);
351 #if @REPLACE_ISWCNTRL@ || defined __MINGW32__
352 _GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
353 _GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));
355 _GL_CXXALIAS_SYS (towlower, wint_t, (wint_t wc));
356 _GL_CXXALIAS_SYS (towupper, wint_t, (wint_t wc));
358 _GL_CXXALIASWARN (towlower);
359 _GL_CXXALIASWARN (towupper);
362 #endif /* _GL_WCTYPE_H */
363 #endif /* _GL_WCTYPE_H */