Sync usage with man page.
[netbsd-mini2440.git] / gnu / dist / groff / src / libs / libgroff / cset.cpp
blob7d8929b843709ad5837068bed1bae55f878d8347
1 /* $NetBSD$ */
3 // -*- C++ -*-
4 /* Copyright (C) 1989, 1990, 1991, 1992, 2004 Free Software Foundation, Inc.
5 Written by James Clark (jjc@jclark.com)
7 This file is part of groff.
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.
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.
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. */
23 #include <ctype.h>
25 #include "lib.h"
26 #include "cset.h"
28 cset csalpha(CSET_BUILTIN);
29 cset csupper(CSET_BUILTIN);
30 cset cslower(CSET_BUILTIN);
31 cset csdigit(CSET_BUILTIN);
32 cset csxdigit(CSET_BUILTIN);
33 cset csspace(CSET_BUILTIN);
34 cset cspunct(CSET_BUILTIN);
35 cset csalnum(CSET_BUILTIN);
36 cset csprint(CSET_BUILTIN);
37 cset csgraph(CSET_BUILTIN);
38 cset cscntrl(CSET_BUILTIN);
40 #ifdef isascii
41 #define ISASCII(c) isascii(c)
42 #else
43 #define ISASCII(c) (1)
44 #endif
46 void cset::clear()
48 char *p = v;
49 for (int i = 0; i <= UCHAR_MAX; i++)
50 p[i] = 0;
53 cset::cset()
55 clear();
58 cset::cset(const char *s)
60 clear();
61 while (*s)
62 v[(unsigned char)*s++] = 1;
65 cset::cset(const unsigned char *s)
67 clear();
68 while (*s)
69 v[*s++] = 1;
72 cset::cset(cset_builtin)
74 // these are initialised by cset_init::cset_init()
77 cset &cset::operator|=(const cset &cs)
79 for (int i = 0; i <= UCHAR_MAX; i++)
80 if (cs.v[i])
81 v[i] = 1;
82 return *this;
86 int cset_init::initialised = 0;
88 cset_init::cset_init()
90 if (initialised)
91 return;
92 initialised = 1;
93 for (int i = 0; i <= UCHAR_MAX; i++) {
94 csalpha.v[i] = ISASCII(i) && isalpha(i);
95 csupper.v[i] = ISASCII(i) && isupper(i);
96 cslower.v[i] = ISASCII(i) && islower(i);
97 csdigit.v[i] = ISASCII(i) && isdigit(i);
98 csxdigit.v[i] = ISASCII(i) && isxdigit(i);
99 csspace.v[i] = ISASCII(i) && isspace(i);
100 cspunct.v[i] = ISASCII(i) && ispunct(i);
101 csalnum.v[i] = ISASCII(i) && isalnum(i);
102 csprint.v[i] = ISASCII(i) && isprint(i);
103 csgraph.v[i] = ISASCII(i) && isgraph(i);
104 cscntrl.v[i] = ISASCII(i) && iscntrl(i);