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.
30 @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 11 functions (all isw* except iswblank) are implemented the
73 same way, or not at all. */
74 #if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
76 /* IRIX 5.3 has macros but no functions, its isw* macros refer to an
77 undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
78 refer to system functions like _iswctype that are not in the
79 standard C library. Rather than try to get ancient buggy
80 implementations like this to work, just disable them. */
96 /* Linux libc5 has <wctype.h> and the functions but they are broken. */
97 # if @REPLACE_ISWCNTRL@
98 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
99 # define iswalnum rpl_iswalnum
100 # define iswalpha rpl_iswalpha
101 # define iswblank rpl_iswblank
102 # define iswcntrl rpl_iswcntrl
103 # define iswdigit rpl_iswdigit
104 # define iswgraph rpl_iswgraph
105 # define iswlower rpl_iswlower
106 # define iswprint rpl_iswprint
107 # define iswpunct rpl_iswpunct
108 # define iswspace rpl_iswspace
109 # define iswupper rpl_iswupper
110 # define iswxdigit rpl_iswxdigit
111 # define towlower rpl_towlower
112 # define towupper rpl_towupper
117 # if @REPLACE_ISWCNTRL@
124 return ((wc >= '0' && wc <= '9')
125 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
129 # if @REPLACE_ISWCNTRL@
136 return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
140 # if @REPLACE_ISWCNTRL@
147 return wc == ' ' || wc == '\t';
151 # if @REPLACE_ISWCNTRL@
158 return (wc & ~0x1f) == 0 || wc == 0x7f;
162 # if @REPLACE_ISWCNTRL@
169 return wc >= '0' && wc <= '9';
173 # if @REPLACE_ISWCNTRL@
180 return wc >= '!' && wc <= '~';
184 # if @REPLACE_ISWCNTRL@
191 return wc >= 'a' && wc <= 'z';
195 # if @REPLACE_ISWCNTRL@
202 return wc >= ' ' && wc <= '~';
206 # if @REPLACE_ISWCNTRL@
213 return (wc >= '!' && wc <= '~'
214 && !((wc >= '0' && wc <= '9')
215 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
219 # if @REPLACE_ISWCNTRL@
226 return (wc == ' ' || wc == '\t'
227 || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
231 # if @REPLACE_ISWCNTRL@
238 return wc >= 'A' && wc <= 'Z';
242 # if @REPLACE_ISWCNTRL@
249 return ((wc >= '0' && wc <= '9')
250 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
254 # if @REPLACE_ISWCNTRL@
261 return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
265 # if @REPLACE_ISWCNTRL@
272 return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
275 #elif ! @HAVE_ISWBLANK@
276 /* Only the iswblank function is missing. */
281 return wc == ' ' || wc == '\t';
286 #if defined __MINGW32__
288 /* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
289 The functions towlower and towupper are implemented in the MSVCRT library
290 to take a wchar_t argument and return a wchar_t result. mingw declares
291 these functions to take a wint_t argument and return a wint_t result.
293 1. When the user passes an argument outside the range 0x0000..0xFFFF, the
294 function will look only at the lower 16 bits. This is allowed according
296 2. The return value is returned in the lower 16 bits of the result register.
297 The upper 16 bits are random: whatever happened to be in that part of the
298 result register. We need to fix this by adding a zero-extend from
299 wchar_t to wint_t after the call. */
302 rpl_towlower (wint_t wc)
304 return (wint_t) (wchar_t) towlower (wc);
306 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
307 # define towlower rpl_towlower
311 rpl_towupper (wint_t wc)
313 return (wint_t) (wchar_t) towupper (wc);
315 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
316 # define towupper rpl_towupper
319 #endif /* __MINGW32__ */
321 #if @REPLACE_ISWCNTRL@
322 _GL_CXXALIAS_RPL (iswalnum, int, (wint_t wc));
323 _GL_CXXALIAS_RPL (iswalpha, int, (wint_t wc));
324 _GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
325 _GL_CXXALIAS_RPL (iswcntrl, int, (wint_t wc));
326 _GL_CXXALIAS_RPL (iswdigit, int, (wint_t wc));
327 _GL_CXXALIAS_RPL (iswgraph, int, (wint_t wc));
328 _GL_CXXALIAS_RPL (iswlower, int, (wint_t wc));
329 _GL_CXXALIAS_RPL (iswprint, int, (wint_t wc));
330 _GL_CXXALIAS_RPL (iswpunct, int, (wint_t wc));
331 _GL_CXXALIAS_RPL (iswspace, int, (wint_t wc));
332 _GL_CXXALIAS_RPL (iswupper, int, (wint_t wc));
333 _GL_CXXALIAS_RPL (iswxdigit, int, (wint_t wc));
335 _GL_CXXALIAS_SYS (iswalnum, int, (wint_t wc));
336 _GL_CXXALIAS_SYS (iswalpha, int, (wint_t wc));
337 _GL_CXXALIAS_SYS (iswblank, int, (wint_t wc));
338 _GL_CXXALIAS_SYS (iswcntrl, int, (wint_t wc));
339 _GL_CXXALIAS_SYS (iswdigit, int, (wint_t wc));
340 _GL_CXXALIAS_SYS (iswgraph, int, (wint_t wc));
341 _GL_CXXALIAS_SYS (iswlower, int, (wint_t wc));
342 _GL_CXXALIAS_SYS (iswprint, int, (wint_t wc));
343 _GL_CXXALIAS_SYS (iswpunct, int, (wint_t wc));
344 _GL_CXXALIAS_SYS (iswspace, int, (wint_t wc));
345 _GL_CXXALIAS_SYS (iswupper, int, (wint_t wc));
346 _GL_CXXALIAS_SYS (iswxdigit, int, (wint_t wc));
348 _GL_CXXALIASWARN (iswalnum);
349 _GL_CXXALIASWARN (iswalpha);
350 _GL_CXXALIASWARN (iswblank);
351 _GL_CXXALIASWARN (iswcntrl);
352 _GL_CXXALIASWARN (iswdigit);
353 _GL_CXXALIASWARN (iswgraph);
354 _GL_CXXALIASWARN (iswlower);
355 _GL_CXXALIASWARN (iswprint);
356 _GL_CXXALIASWARN (iswpunct);
357 _GL_CXXALIASWARN (iswspace);
358 _GL_CXXALIASWARN (iswupper);
359 _GL_CXXALIASWARN (iswxdigit);
361 #if @REPLACE_ISWCNTRL@ || defined __MINGW32__
362 _GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
363 _GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));
365 _GL_CXXALIAS_SYS (towlower, wint_t, (wint_t wc));
366 _GL_CXXALIAS_SYS (towupper, wint_t, (wint_t wc));
368 _GL_CXXALIASWARN (towlower);
369 _GL_CXXALIASWARN (towupper);
372 #endif /* _GL_WCTYPE_H */
373 #endif /* _GL_WCTYPE_H */