185 lines
4.5 KiB
C
185 lines
4.5 KiB
C
/* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
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Copyright (C) 2006-2008 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Bruno Haible and Paul Eggert. */
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/*
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* ISO C 99 <wctype.h> for platforms that lack it.
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* <http://www.opengroup.org/susv3xbd/wctype.h.html>
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*
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* iswctype, towctrans, towlower, towupper, wctrans, wctype,
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* wctrans_t, and wctype_t are not yet implemented.
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*/
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#ifndef _GL_WCTYPE_H
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#if __GNUC__ >= 3
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@PRAGMA_SYSTEM_HEADER@
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#endif
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#if @HAVE_WINT_T@
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/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.
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Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
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<wchar.h>.
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BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
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included before <wchar.h>. */
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# include <stddef.h>
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# include <stdio.h>
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# include <time.h>
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# include <wchar.h>
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#endif
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/* Include the original <wctype.h> if it exists.
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BeOS 5 has the functions but no <wctype.h>. */
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/* The include_next requires a split double-inclusion guard. */
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#if @HAVE_WCTYPE_H@
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# @INCLUDE_NEXT@ @NEXT_WCTYPE_H@
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#endif
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#ifndef _GL_WCTYPE_H
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#define _GL_WCTYPE_H
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/* Define wint_t. (Also done in wchar.in.h.) */
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#if !@HAVE_WINT_T@ && !defined wint_t
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# define wint_t int
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# ifndef WEOF
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# define WEOF -1
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# endif
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#endif
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/* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
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Linux libc5 has <wctype.h> and the functions but they are broken.
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Assume all 12 functions are implemented the same way, or not at all. */
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#if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
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/* IRIX 5.3 has macros but no functions, its isw* macros refer to an
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undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
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refer to system functions like _iswctype that are not in the
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standard C library. Rather than try to get ancient buggy
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implementations like this to work, just disable them. */
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# undef iswalnum
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# undef iswalpha
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# undef iswblank
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# undef iswcntrl
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# undef iswdigit
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# undef iswgraph
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# undef iswlower
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# undef iswprint
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# undef iswpunct
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# undef iswspace
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# undef iswupper
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# undef iswxdigit
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/* Linux libc5 has <wctype.h> and the functions but they are broken. */
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# if @REPLACE_ISWCNTRL@
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# define iswalnum rpl_iswalnum
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# define iswalpha rpl_iswalpha
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# define iswblank rpl_iswblank
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# define iswcntrl rpl_iswcntrl
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# define iswdigit rpl_iswdigit
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# define iswgraph rpl_iswgraph
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# define iswlower rpl_iswlower
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# define iswprint rpl_iswprint
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# define iswpunct rpl_iswpunct
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# define iswspace rpl_iswspace
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# define iswupper rpl_iswupper
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# define iswxdigit rpl_iswxdigit
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# endif
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static inline int
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iswalnum (wint_t wc)
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{
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return ((wc >= '0' && wc <= '9')
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|| ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
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}
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static inline int
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iswalpha (wint_t wc)
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{
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return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
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}
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static inline int
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iswblank (wint_t wc)
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{
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return wc == ' ' || wc == '\t';
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}
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static inline int
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iswcntrl (wint_t wc)
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{
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return (wc & ~0x1f) == 0 || wc == 0x7f;
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}
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static inline int
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iswdigit (wint_t wc)
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{
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return wc >= '0' && wc <= '9';
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}
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static inline int
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iswgraph (wint_t wc)
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{
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return wc >= '!' && wc <= '~';
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}
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static inline int
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iswlower (wint_t wc)
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{
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return wc >= 'a' && wc <= 'z';
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}
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static inline int
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iswprint (wint_t wc)
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{
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return wc >= ' ' && wc <= '~';
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}
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static inline int
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iswpunct (wint_t wc)
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{
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return (wc >= '!' && wc <= '~'
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&& !((wc >= '0' && wc <= '9')
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|| ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
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}
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static inline int
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iswspace (wint_t wc)
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{
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return (wc == ' ' || wc == '\t'
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|| wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
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}
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static inline int
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iswupper (wint_t wc)
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{
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return wc >= 'A' && wc <= 'Z';
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}
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static inline int
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iswxdigit (wint_t wc)
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{
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return ((wc >= '0' && wc <= '9')
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|| ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
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}
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# endif /* ! HAVE_ISWCNTRL */
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#endif /* _GL_WCTYPE_H */
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#endif /* _GL_WCTYPE_H */
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