/contrib/groff/src/libs/libgroff/cset.cpp

  1// -*- C++ -*-
  2/* Copyright (C) 1989, 1990, 1991, 1992, 2004 Free Software Foundation, Inc.
  3     Written by James Clark (jjc@jclark.com)
  4
  5This file is part of groff.
  6
  7groff is free software; you can redistribute it and/or modify it under
  8the terms of the GNU General Public License as published by the Free
  9Software Foundation; either version 2, or (at your option) any later
 10version.
 11
 12groff is distributed in the hope that it will be useful, but WITHOUT ANY
 13WARRANTY; without even the implied warranty of MERCHANTABILITY or
 14FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 15for more details.
 16
 17You should have received a copy of the GNU General Public License along
 18with groff; see the file COPYING.  If not, write to the Free Software
 19Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
 20
 21/* $FreeBSD$ */
 22
 23#include <ctype.h>
 24#ifdef __FreeBSD__
 25#include <locale.h>
 26#endif
 27
 28#include "lib.h"
 29#include "cset.h"
 30
 31cset csalpha(CSET_BUILTIN);
 32cset csupper(CSET_BUILTIN);
 33cset cslower(CSET_BUILTIN);
 34cset csdigit(CSET_BUILTIN);
 35cset csxdigit(CSET_BUILTIN);
 36cset csspace(CSET_BUILTIN);
 37cset cspunct(CSET_BUILTIN);
 38cset csalnum(CSET_BUILTIN);
 39cset csprint(CSET_BUILTIN);
 40cset csgraph(CSET_BUILTIN);
 41cset cscntrl(CSET_BUILTIN);
 42
 43#if defined(isascii) && !defined(__FreeBSD__)
 44#define ISASCII(c) isascii(c)
 45#else
 46#define ISASCII(c) (1)
 47#endif
 48
 49void cset::clear()
 50{
 51  char *p = v;
 52  for (int i = 0; i <= UCHAR_MAX; i++)
 53    p[i] = 0;
 54}
 55
 56cset::cset()
 57{
 58  clear();
 59}
 60
 61cset::cset(const char *s)
 62{
 63  clear();
 64  while (*s)
 65    v[(unsigned char)*s++] = 1;
 66}
 67
 68cset::cset(const unsigned char *s)
 69{
 70  clear();
 71  while (*s)
 72    v[*s++] = 1;
 73}
 74
 75cset::cset(cset_builtin)
 76{
 77  // these are initialised by cset_init::cset_init()
 78}
 79
 80cset &cset::operator|=(const cset &cs)
 81{
 82  for (int i = 0; i <= UCHAR_MAX; i++)
 83    if (cs.v[i])
 84      v[i] = 1;
 85  return *this;
 86}
 87
 88
 89int cset_init::initialised = 0;
 90
 91cset_init::cset_init()
 92{
 93  if (initialised)
 94    return;
 95  initialised = 1;
 96#ifdef __FreeBSD__
 97  (void) setlocale(LC_CTYPE, "");
 98#endif
 99  for (int i = 0; i <= UCHAR_MAX; i++) {
100    csalpha.v[i] = ISASCII(i) && isalpha(i);
101    csupper.v[i] = ISASCII(i) && isupper(i);
102    cslower.v[i] = ISASCII(i) && islower(i);
103    csdigit.v[i] = ISASCII(i) && isdigit(i);
104    csxdigit.v[i] = ISASCII(i) && isxdigit(i);
105    csspace.v[i] = ISASCII(i) && isspace(i);
106    cspunct.v[i] = ISASCII(i) && ispunct(i);
107    csalnum.v[i] = ISASCII(i) && isalnum(i);
108    csprint.v[i] = ISASCII(i) && isprint(i);
109    csgraph.v[i] = ISASCII(i) && isgraph(i);
110    cscntrl.v[i] = ISASCII(i) && iscntrl(i);
111  }
112}