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 and WEOF. (Also done in wchar.in.h.) */
62 #if !@HAVE_WINT_T@ && !defined wint_t
69 # define WEOF ((wint_t) -1)
74 /* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
75 Linux libc5 has <wctype.h> and the functions but they are broken.
76 Assume all 11 functions (all isw* except iswblank) are implemented the
77 same way, or not at all. */
78 #if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
80 /* IRIX 5.3 has macros but no functions, its isw* macros refer to an
81 undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
82 refer to system functions like _iswctype that are not in the
83 standard C library. Rather than try to get ancient buggy
84 implementations like this to work, just disable them. */
100 /* Linux libc5 has <wctype.h> and the functions but they are broken. */
101 # if @REPLACE_ISWCNTRL@
102 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
103 # define iswalnum rpl_iswalnum
104 # define iswalpha rpl_iswalpha
105 # define iswblank rpl_iswblank
106 # define iswcntrl rpl_iswcntrl
107 # define iswdigit rpl_iswdigit
108 # define iswgraph rpl_iswgraph
109 # define iswlower rpl_iswlower
110 # define iswprint rpl_iswprint
111 # define iswpunct rpl_iswpunct
112 # define iswspace rpl_iswspace
113 # define iswupper rpl_iswupper
114 # define iswxdigit rpl_iswxdigit
115 # define towlower rpl_towlower
116 # define towupper rpl_towupper
121 # if @REPLACE_ISWCNTRL@
128 return ((wc >= '0' && wc <= '9')
129 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
133 # if @REPLACE_ISWCNTRL@
140 return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
144 # if @REPLACE_ISWCNTRL@
151 return wc == ' ' || wc == '\t';
155 # if @REPLACE_ISWCNTRL@
162 return (wc & ~0x1f) == 0 || wc == 0x7f;
166 # if @REPLACE_ISWCNTRL@
173 return wc >= '0' && wc <= '9';
177 # if @REPLACE_ISWCNTRL@
184 return wc >= '!' && wc <= '~';
188 # if @REPLACE_ISWCNTRL@
195 return wc >= 'a' && wc <= 'z';
199 # if @REPLACE_ISWCNTRL@
206 return wc >= ' ' && wc <= '~';
210 # if @REPLACE_ISWCNTRL@
217 return (wc >= '!' && wc <= '~'
218 && !((wc >= '0' && wc <= '9')
219 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
223 # if @REPLACE_ISWCNTRL@
230 return (wc == ' ' || wc == '\t'
231 || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
235 # if @REPLACE_ISWCNTRL@
242 return wc >= 'A' && wc <= 'Z';
246 # if @REPLACE_ISWCNTRL@
253 return ((wc >= '0' && wc <= '9')
254 || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
258 # if @REPLACE_ISWCNTRL@
265 return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
269 # if @REPLACE_ISWCNTRL@
276 return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
279 #elif ! @HAVE_ISWBLANK@
280 /* Only the iswblank function is missing. */
285 return wc == ' ' || wc == '\t';
290 #if defined __MINGW32__
292 /* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
293 The functions towlower and towupper are implemented in the MSVCRT library
294 to take a wchar_t argument and return a wchar_t result. mingw declares
295 these functions to take a wint_t argument and return a wint_t result.
297 1. When the user passes an argument outside the range 0x0000..0xFFFF, the
298 function will look only at the lower 16 bits. This is allowed according
300 2. The return value is returned in the lower 16 bits of the result register.
301 The upper 16 bits are random: whatever happened to be in that part of the
302 result register. We need to fix this by adding a zero-extend from
303 wchar_t to wint_t after the call. */
306 rpl_towlower (wint_t wc)
308 return (wint_t) (wchar_t) towlower (wc);
310 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
311 # define towlower rpl_towlower
315 rpl_towupper (wint_t wc)
317 return (wint_t) (wchar_t) towupper (wc);
319 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
320 # define towupper rpl_towupper
323 #endif /* __MINGW32__ */
325 #if @REPLACE_ISWCNTRL@
326 _GL_CXXALIAS_RPL (iswalnum, int, (wint_t wc));
327 _GL_CXXALIAS_RPL (iswalpha, int, (wint_t wc));
328 _GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
329 _GL_CXXALIAS_RPL (iswcntrl, int, (wint_t wc));
330 _GL_CXXALIAS_RPL (iswdigit, int, (wint_t wc));
331 _GL_CXXALIAS_RPL (iswgraph, int, (wint_t wc));
332 _GL_CXXALIAS_RPL (iswlower, int, (wint_t wc));
333 _GL_CXXALIAS_RPL (iswprint, int, (wint_t wc));
334 _GL_CXXALIAS_RPL (iswpunct, int, (wint_t wc));
335 _GL_CXXALIAS_RPL (iswspace, int, (wint_t wc));
336 _GL_CXXALIAS_RPL (iswupper, int, (wint_t wc));
337 _GL_CXXALIAS_RPL (iswxdigit, int, (wint_t wc));
339 _GL_CXXALIAS_SYS (iswalnum, int, (wint_t wc));
340 _GL_CXXALIAS_SYS (iswalpha, int, (wint_t wc));
341 _GL_CXXALIAS_SYS (iswblank, int, (wint_t wc));
342 _GL_CXXALIAS_SYS (iswcntrl, int, (wint_t wc));
343 _GL_CXXALIAS_SYS (iswdigit, int, (wint_t wc));
344 _GL_CXXALIAS_SYS (iswgraph, int, (wint_t wc));
345 _GL_CXXALIAS_SYS (iswlower, int, (wint_t wc));
346 _GL_CXXALIAS_SYS (iswprint, int, (wint_t wc));
347 _GL_CXXALIAS_SYS (iswpunct, int, (wint_t wc));
348 _GL_CXXALIAS_SYS (iswspace, int, (wint_t wc));
349 _GL_CXXALIAS_SYS (iswupper, int, (wint_t wc));
350 _GL_CXXALIAS_SYS (iswxdigit, int, (wint_t wc));
352 _GL_CXXALIASWARN (iswalnum);
353 _GL_CXXALIASWARN (iswalpha);
354 _GL_CXXALIASWARN (iswblank);
355 _GL_CXXALIASWARN (iswcntrl);
356 _GL_CXXALIASWARN (iswdigit);
357 _GL_CXXALIASWARN (iswgraph);
358 _GL_CXXALIASWARN (iswlower);
359 _GL_CXXALIASWARN (iswprint);
360 _GL_CXXALIASWARN (iswpunct);
361 _GL_CXXALIASWARN (iswspace);
362 _GL_CXXALIASWARN (iswupper);
363 _GL_CXXALIASWARN (iswxdigit);
365 #if @REPLACE_ISWCNTRL@ || defined __MINGW32__
366 _GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
367 _GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));
369 _GL_CXXALIAS_SYS (towlower, wint_t, (wint_t wc));
370 _GL_CXXALIAS_SYS (towupper, wint_t, (wint_t wc));
372 _GL_CXXALIASWARN (towlower);
373 _GL_CXXALIASWARN (towupper);
376 #endif /* _GL_WCTYPE_H */
377 #endif /* _GL_WCTYPE_H */