lib/wctype_.h

   1 /* A substitute for ISO C99 <wctype.h>, for platforms that lack it.
   2
   3    Copyright (C) 2006 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 2, 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 #define _GL_WCTYPE_H
  31
  32 #if @HAVE_WINT_T@ - 0
  33 /* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>.
  34    Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
  35    <wchar.h>.
  36    BSD/OS 4.1 has a bug: <stdio.h> and <time.h> must be included before
  37    <wchar.h>.  */
  38 # include <stdio.h>
  39 # include <time.h>
  40 # include <wchar.h>
  41 typedef wint_t __wctype_wint_t;
  42 #else
  43 typedef int __wctype_wint_t;
  44 #endif
  45
  46 /* Include the original <wctype.h> if it exists.
  47    BeOS 5 has the functions but no <wctype.h>.  */
  48 #if @HAVE_WCTYPE_H@
  49 # include @ABSOLUTE_WCTYPE_H@
  50 #endif
  51
  52 /* IRIX 5.3 has a bug: its isw* macros reference an undefined variable
  53    _ctmp_.  */
  54 #if @HAVE_WCTYPE_CTMP_BUG@
  55 static wint_t _ctmp_;
  56 #endif
  57
  58 /* FreeBSD 4.4 to 4.11 has <wctype.h> but lacks the functions.
  59    Assume all 12 functions are implemented the same way, or not at all.  */
  60
  61 #if !defined iswalnum && !HAVE_ISWCNTRL
  62 static inline int
  63 iswalnum (__wctype_wint_t wc)
  64 {
  65   return ((wc >= '0' && wc <= '9')
  66           || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z'));
  67 }
  68 # define iswalnum iswalnum
  69 #endif
  70
  71 #if !defined iswalpha && !HAVE_ISWCNTRL
  72 static inline int
  73 iswalpha (__wctype_wint_t wc)
  74 {
  75   return (wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z';
  76 }
  77 # define iswalpha iswalpha
  78 #endif
  79
  80 #if !defined iswblank && !HAVE_ISWCNTRL
  81 static inline int
  82 iswblank (__wctype_wint_t wc)
  83 {
  84   return wc == ' ' || wc == '\t';
  85 }
  86 # define iswblank iswblank
  87 #endif
  88
  89 #if !defined iswcntrl && !HAVE_ISWCNTRL
  90 static inline int
  91 iswcntrl (__wctype_wint_t wc)
  92 {
  93   return (wc & ~0x1f) == 0 || wc == 0x7f;
  94 }
  95 # define iswcntrl iswcntrl
  96 #endif
  97
  98 #if !defined iswdigit && !HAVE_ISWCNTRL
  99 static inline int
 100 iswdigit (__wctype_wint_t wc)
 101 {
 102   return wc >= '0' && wc <= '9';
 103 }
 104 # define iswdigit iswdigit
 105 #endif
 106
 107 #if !defined iswgraph && !HAVE_ISWCNTRL
 108 static inline int
 109 iswgraph (__wctype_wint_t wc)
 110 {
 111   return wc >= '!' && wc <= '~';
 112 }
 113 # define iswgraph iswgraph
 114 #endif
 115
 116 #if !defined iswlower && !HAVE_ISWCNTRL
 117 static inline int
 118 iswlower (__wctype_wint_t wc)
 119 {
 120   return wc >= 'a' && wc <= 'z';
 121 }
 122 # define iswlower iswlower
 123 #endif
 124
 125 #if !defined iswprint && !HAVE_ISWCNTRL
 126 static inline int
 127 iswprint (__wctype_wint_t wc)
 128 {
 129   return wc >= ' ' && wc <= '~';
 130 }
 131 # define iswprint iswprint
 132 #endif
 133
 134 #if !defined iswpunct && !HAVE_ISWCNTRL
 135 static inline int
 136 iswpunct (__wctype_wint_t wc)
 137 {
 138   return (wc >= '!' && wc <= '~'
 139           && !((wc >= '0' && wc <= '9')
 140                || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'Z')));
 141 }
 142 # define iswpunct iswpunct
 143 #endif
 144
 145 #if !defined iswspace && !HAVE_ISWCNTRL
 146 static inline int
 147 iswspace (__wctype_wint_t wc)
 148 {
 149   return (wc == ' ' || wc == '\t'
 150           || wc == '\n' || wc == '\v' || wc == '\f' || wc == '\r');
 151 }
 152 # define iswspace iswspace
 153 #endif
 154
 155 #if !defined iswupper && !HAVE_ISWCNTRL
 156 static inline int
 157 iswupper (__wctype_wint_t wc)
 158 {
 159   return wc >= 'A' && wc <= 'Z';
 160 }
 161 # define iswupper iswupper
 162 #endif
 163
 164 #if !defined iswxdigit && !HAVE_ISWCNTRL
 165 static inline int
 166 iswxdigit (__wctype_wint_t wc)
 167 {
 168   return ((wc >= '0' && wc <= '9')
 169           || ((wc & ~0x20) >= 'A' && (wc & ~0x20) <= 'F'));
 170 }
 171 # define iswxdigit iswxdigit
 172 #endif
 173
 174
 175 #endif /* _GL_WCTYPE_H */