groff: update vendor branch to v1.20.1
[dragonfly.git] / contrib / groff / src / libs / libgroff / cset.cpp
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92d0a6a6 1// -*- C++ -*-
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2/* Copyright (C) 1989, 1990, 1991, 1992, 2004, 2009
3 Free Software Foundation, Inc.
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4 Written by James Clark (jjc@jclark.com)
5
6This file is part of groff.
7
8groff is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
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10Software Foundation, either version 3 of the License, or
11(at your option) any later version.
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12
13groff is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16for more details.
17
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18You should have received a copy of the GNU General Public License
19along with this program. If not, see <http://www.gnu.org/licenses/>. */
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20
21#include <ctype.h>
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22
23#include "lib.h"
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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}