gnu/usr.bin/groff/libgroff/cset.h

   1 // -*- C++ -*-
   2 /* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
   3      Written by James Clark (jjc@jclark.uucp)
   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 1, 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 LICENSE.  If not, write to the Free Software
  19 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
  20
  21 #ifndef UCHAR_MAX
  22 #define UCHAR_MAX 255
  23 #endif
  24
  25 enum cset_builtin { CSET_BUILTIN };
  26
  27 class cset {
  28 public:
  29   cset();
  30   cset(cset_builtin);
  31   cset(const char *);
  32   cset(const unsigned char *);
  33   int operator()(unsigned char) const;
  34
  35   cset &operator|=(const cset &);
  36   cset &operator|=(unsigned char);
  37
  38   friend class cset_init;
  39 private:
  40   char v[UCHAR_MAX+1];
  41   void clear();
  42 };
  43
  44 inline int cset::operator()(unsigned char c) const
  45 {
  46   return v[c];
  47 }
  48
  49 inline cset &cset::operator|=(unsigned char c)
  50 {
  51   v[c] = 1;
  52   return *this;
  53 }
  54
  55 extern cset csalpha;
  56 extern cset csupper;
  57 extern cset cslower;
  58 extern cset csdigit;
  59 extern cset csxdigit;
  60 extern cset csspace;
  61 extern cset cspunct;
  62 extern cset csalnum;
  63 extern cset csprint;
  64 extern cset csgraph;
  65 extern cset cscntrl;
  66
  67 static class cset_init {
  68   static int initialised;
  69 public:
  70   cset_init();
  71 } _cset_init;