gl/wctype.in.h

   1 /* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
   2
   3    Copyright (C) 2006-2008 Free Software Foundation, Inc.
   4
   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 3, or (at your option)
   8    any later version.
   9
  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.
  14
  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.  */
  18
  19 /* Written by Bruno Haible and Paul Eggert.  */
  20
  21 /*
  22  * ISO C 99 <wctype.h> for platforms that lack it.
  23  * <http://www.opengroup.org/susv3xbd/wctype.h.html>
  24  *
  25  * iswctype, towctrans, towlower, towupper, wctrans, wctype,
  26  * wctrans_t, and wctype_t are not yet implemented.
  27  */
  28
  29 #ifndef _GL_WCTYPE_H
  30
  31 #if __GNUC__ >= 3
  32 @PRAGMA_SYSTEM_HEADER@
  33 #endif
  34
  35 #if @HAVE_WINT_T@
  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
  38    <wchar.h>.
  39    BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
  40    included before <wchar.h>.  */
  41 # include <stddef.h>
  42 # include <stdio.h>
  43 # include <time.h>
  44 # include <wchar.h>
  45 #endif
  46
  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.  */
  50 #if @HAVE_WCTYPE_H@
  51 # @INCLUDE_NEXT@ @NEXT_WCTYPE_H@
  52 #endif
  53
  54 #ifndef _GL_WCTYPE_H
  55 #define _GL_WCTYPE_H
  56
  57 /* Define wint_t.  (Also done in wchar.in.h.)  */
  58 #if !@HAVE_WINT_T@ && !defined wint_t
  59 # define wint_t int
  60 # ifndef WEOF
  61 #  define WEOF -1
  62 # endif
  63 #endif
  64
  65 /* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
  66    Linux libc5 has <wctype.h> and the functions but they are broken.
  67    Assume all 12 functions are implemented the same way, or not at all.  */
  68 #if ! @HAVE_ISWCNTRL@ || @REPLACE_ISWCNTRL@
  69
  70 /* IRIX 5.3 has macros but no functions, its isw* macros refer to an
  71    undefined variable _ctmp_ and to <ctype.h> macros like _P, and they
  72    refer to system functions like _iswctype that are not in the
  73    standard C library.  Rather than try to get ancient buggy
  74    implementations like this to work, just disable them.  */
  75 #  undef iswalnum
  76 #  undef iswalpha
  77 #  undef iswblank
  78 #  undef iswcntrl
  79 #  undef iswdigit
  80 #  undef iswgraph
  81 #  undef iswlower
  82 #  undef iswprint
  83 #  undef iswpunct
  84 #  undef iswspace
  85 #  undef iswupper
  86 #  undef iswxdigit
  87
  88 /* Linux libc5 has <wctype.h> and the functions but they are broken.  */
  89 #  if @REPLACE_ISWCNTRL@
  90 #   define iswalnum rpl_iswalnum
  91 #   define iswalpha rpl_iswalpha
  92 #   define iswblank rpl_iswblank
  93 #   define iswcntrl rpl_iswcntrl
  94 #   define iswdigit rpl_iswdigit
  95 #   define iswgraph rpl_iswgraph
  96 #   define iswlower rpl_iswlower
  97 #   define iswprint rpl_iswprint
  98 #   define iswpunct rpl_iswpunct
  99 #   define iswspace rpl_iswspace
 100 #   define iswupper rpl_iswupper
 101 #   define iswxdigit rpl_iswxdigit
 102 #  endif
 103
 104 static inline int
 105 iswalnum (wint_t wc)
 106 {
 107   return ((wc >= '0' && wc <= '9')
 108           || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
 109 }
 110
 111 static inline int
 112 iswalpha (wint_t wc)
 113 {
 114   return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
 115 }
 116
 117 static inline int
 118 iswblank (wint_t wc)
 119 {
 120   return wc == ' ' || wc == '\t';
 121 }
 122
 123 static inline int
 124 iswcntrl (wint_t wc)
 125 {
 126   return (wc & ~0x1f) == 0 || wc == 0x7f;
 127 }
 128
 129 static inline int
 130 iswdigit (wint_t wc)
 131 {
 132   return wc >= '0' && wc <= '9';
 133 }
 134
 135 static inline int
 136 iswgraph (wint_t wc)
 137 {
 138   return wc >= '!' && wc <= '~';
 139 }
 140
 141 static inline int
 142 iswlower (wint_t wc)
 143 {
 144   return wc >= 'a' && wc <= 'z';
 145 }
 146
 147 static inline int
 148 iswprint (wint_t wc)
 149 {
 150   return wc >= ' ' && wc <= '~';
 151 }
 152
 153 static inline int
 154 iswpunct (wint_t wc)
 155 {
 156   return (wc >= '!' && wc <= '~'
 157           && !((wc >= '0' && wc <= '9')
 158                || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
 159 }
 160
 161 static inline int
 162 iswspace (wint_t wc)
 163 {
 164   return (wc == ' ' || wc == '\t'
 165           || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
 166 }
 167
 168 static inline int
 169 iswupper (wint_t wc)
 170 {
 171   return wc >= 'A' && wc <= 'Z';
 172 }
 173
 174 static inline int
 175 iswxdigit (wint_t wc)
 176 {
 177   return ((wc >= '0' && wc <= '9')
 178           || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
 179 }
 180
 181 # endif /* ! HAVE_ISWCNTRL */
 182
 183 #endif /* _GL_WCTYPE_H */
 184 #endif /* _GL_WCTYPE_H */