src/include/cset.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.com)
   4
   5 This file is part of groff.
   6
   7 groff is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License along
  18 with groff; see the file COPYING.  If not, write to the Free Software
  19 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  20
  21 #ifdef HAVE_CC_LIMITS_H
  22 #include <limits.h>
  23 #else /* not HAVE_CC_LIMITS_H */
  24 #ifndef UCHAR_MAX
  25 #define UCHAR_MAX 255
  26 #endif
  27 #endif /* not HAVE_CC_LIMITS_H */
  28
  29 enum cset_builtin { CSET_BUILTIN };
  30
  31 class cset {
  32 public:
  33   cset();
  34   cset(cset_builtin);
  35   cset(const char *);
  36   cset(const unsigned char *);
  37   int operator()(unsigned char) const;
  38
  39   cset &operator|=(const cset &);
  40   cset &operator|=(unsigned char);
  41
  42   friend class cset_init;
  43 private:
  44   char v[UCHAR_MAX+1];
  45   void clear();
  46 };
  47
  48 inline int cset::operator()(unsigned char c) const
  49 {
  50   return v[c];
  51 }
  52
  53 inline cset &cset::operator|=(unsigned char c)
  54 {
  55   v[c] = 1;
  56   return *this;
  57 }
  58
  59 extern cset csalpha;
  60 extern cset csupper;
  61 extern cset cslower;
  62 extern cset csdigit;
  63 extern cset csxdigit;
  64 extern cset csspace;
  65 extern cset cspunct;
  66 extern cset csalnum;
  67 extern cset csprint;
  68 extern cset csgraph;
  69 extern cset cscntrl;
  70
  71 static class cset_init {
  72   static int initialised;
  73 public:
  74   cset_init();
  75 } _cset_init;