393 lines
9.3 KiB
C
393 lines
9.3 KiB
C
/* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
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Copyright (C) 2006-2010 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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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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/* Define wint_t and WEOF. (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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#else
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# ifndef WEOF
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# define WEOF ((wint_t) -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 11 functions (all isw* except iswblank) are implemented the
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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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# undef towlower
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# undef towupper
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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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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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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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# define towlower rpl_towlower
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# define towupper rpl_towupper
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# endif
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# endif
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static inline int
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# if @REPLACE_ISWCNTRL@
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rpl_iswalnum
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# else
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iswalnum
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswalpha
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# else
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iswalpha
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswblank
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# else
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iswblank
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswcntrl
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# else
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iswcntrl
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswdigit
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# else
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iswdigit
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswgraph
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# else
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iswgraph
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswlower
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# else
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iswlower
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswprint
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# else
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iswprint
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswpunct
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# else
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iswpunct
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswspace
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# else
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iswspace
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswupper
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# else
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iswupper
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# endif
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(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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# if @REPLACE_ISWCNTRL@
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rpl_iswxdigit
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# else
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iswxdigit
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# endif
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(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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static inline wint_t
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# if @REPLACE_ISWCNTRL@
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rpl_towlower
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# else
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towlower
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# endif
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(wint_t wc)
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{
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return (wc >= 'A' && wc <= 'Z' ? wc - 'A' + 'a' : wc);
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}
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static inline wint_t
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# if @REPLACE_ISWCNTRL@
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rpl_towupper
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# else
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towupper
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# endif
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(wint_t wc)
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{
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return (wc >= 'a' && wc <= 'z' ? wc - 'a' + 'A' : wc);
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}
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#elif ! @HAVE_ISWBLANK@ || @REPLACE_ISWBLANK@
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/* Only the iswblank function is missing. */
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# if @REPLACE_ISWBLANK@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define iswblank rpl_iswblank
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# endif
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# endif
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static inline int
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# if @REPLACE_ISWBLANK@
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rpl_iswblank
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# else
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iswblank
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# endif
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(wint_t wc)
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{
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return wc == ' ' || wc == '\t';
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}
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#endif
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#if defined __MINGW32__
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/* On native Windows, wchar_t is uint16_t, and wint_t is uint32_t.
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The functions towlower and towupper are implemented in the MSVCRT library
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to take a wchar_t argument and return a wchar_t result. mingw declares
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these functions to take a wint_t argument and return a wint_t result.
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This means that:
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1. When the user passes an argument outside the range 0x0000..0xFFFF, the
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function will look only at the lower 16 bits. This is allowed according
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to POSIX.
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2. The return value is returned in the lower 16 bits of the result register.
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The upper 16 bits are random: whatever happened to be in that part of the
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result register. We need to fix this by adding a zero-extend from
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wchar_t to wint_t after the call. */
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static inline wint_t
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rpl_towlower (wint_t wc)
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{
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return (wint_t) (wchar_t) towlower (wc);
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}
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define towlower rpl_towlower
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# endif
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static inline wint_t
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rpl_towupper (wint_t wc)
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{
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return (wint_t) (wchar_t) towupper (wc);
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}
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define towupper rpl_towupper
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# endif
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#endif /* __MINGW32__ */
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#if @REPLACE_ISWCNTRL@
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_GL_CXXALIAS_RPL (iswalnum, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswalpha, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswcntrl, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswdigit, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswgraph, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswlower, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswprint, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswpunct, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswspace, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswupper, int, (wint_t wc));
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_GL_CXXALIAS_RPL (iswxdigit, int, (wint_t wc));
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#else
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_GL_CXXALIAS_SYS (iswalnum, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswalpha, int, (wint_t wc));
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# if @REPLACE_ISWBLANK@
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_GL_CXXALIAS_RPL (iswblank, int, (wint_t wc));
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# else
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_GL_CXXALIAS_SYS (iswblank, int, (wint_t wc));
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# endif
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_GL_CXXALIAS_SYS (iswcntrl, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswdigit, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswgraph, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswlower, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswprint, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswpunct, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswspace, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswupper, int, (wint_t wc));
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_GL_CXXALIAS_SYS (iswxdigit, int, (wint_t wc));
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#endif
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_GL_CXXALIASWARN (iswalnum);
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_GL_CXXALIASWARN (iswalpha);
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_GL_CXXALIASWARN (iswblank);
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_GL_CXXALIASWARN (iswcntrl);
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_GL_CXXALIASWARN (iswdigit);
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_GL_CXXALIASWARN (iswgraph);
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_GL_CXXALIASWARN (iswlower);
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_GL_CXXALIASWARN (iswprint);
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_GL_CXXALIASWARN (iswpunct);
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_GL_CXXALIASWARN (iswspace);
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_GL_CXXALIASWARN (iswupper);
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_GL_CXXALIASWARN (iswxdigit);
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#if @REPLACE_ISWCNTRL@ || defined __MINGW32__
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_GL_CXXALIAS_RPL (towlower, wint_t, (wint_t wc));
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_GL_CXXALIAS_RPL (towupper, wint_t, (wint_t wc));
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#else
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_GL_CXXALIAS_SYS (towlower, wint_t, (wint_t wc));
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_GL_CXXALIAS_SYS (towupper, wint_t, (wint_t wc));
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#endif
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_GL_CXXALIASWARN (towlower);
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_GL_CXXALIASWARN (towupper);
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#endif /* _GL_WCTYPE_H */
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#endif /* _GL_WCTYPE_H */
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