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#include <ctype.h>
22
23#include "lib.h"
24#include "cset.h"
25
26cset csalpha(CSET_BUILTIN);
27cset csupper(CSET_BUILTIN);
28cset cslower(CSET_BUILTIN);
29cset csdigit(CSET_BUILTIN);
30cset csxdigit(CSET_BUILTIN);
31cset csspace(CSET_BUILTIN);
32cset cspunct(CSET_BUILTIN);
33cset csalnum(CSET_BUILTIN);
34cset csprint(CSET_BUILTIN);
35cset csgraph(CSET_BUILTIN);
36cset cscntrl(CSET_BUILTIN);
37
38#ifdef isascii
39#define ISASCII(c) isascii(c)
40#else
41#define ISASCII(c) (1)
42#endif
43
44void cset::clear()
45{
46  char *p = v;
47  for (int i = 0; i <= UCHAR_MAX; i++)
48    p[i] = 0;
49}
50
51cset::cset()
52{
53  clear();
54}
55
56cset::cset(const char *s)
57{
58  clear();
59  while (*s)
60    v[(unsigned char)*s++] = 1;
61}
62
63cset::cset(const unsigned char *s)
64{
65  clear();
66  while (*s)
67    v[*s++] = 1;
68}
69
70cset::cset(cset_builtin)
71{
72  // these are initialised by cset_init::cset_init()
73}
74
75cset &cset::operator|=(const cset &cs)
76{
77  for (int i = 0; i <= UCHAR_MAX; i++)
78    if (cs.v[i])
79      v[i] = 1;
80  return *this;
81}
82
83
84int cset_init::initialised = 0;
85
86cset_init::cset_init()
87{
88  if (initialised)
89    return;
90  initialised = 1;
91  for (int i = 0; i <= UCHAR_MAX; i++) {
92    csalpha.v[i] = ISASCII(i) && isalpha(i);
93    csupper.v[i] = ISASCII(i) && isupper(i);
94    cslower.v[i] = ISASCII(i) && islower(i);
95    csdigit.v[i] = ISASCII(i) && isdigit(i);
96    csxdigit.v[i] = ISASCII(i) && isxdigit(i);
97    csspace.v[i] = ISASCII(i) && isspace(i);
98    cspunct.v[i] = ISASCII(i) && ispunct(i);
99    csalnum.v[i] = ISASCII(i) && isalnum(i);
100    csprint.v[i] = ISASCII(i) && isprint(i);
101    csgraph.v[i] = ISASCII(i) && isgraph(i);
102    cscntrl.v[i] = ISASCII(i) && iscntrl(i);
103  }
104}
105