gnu/dist/groff/src/include/cset.h

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