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- // -*- C++ -*-
- /* Copyright (C) 1989, 1990 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.uucp)
-
- This file is part of groff.
-
- groff is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 1, or (at your option) any later
- version.
-
- groff is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
-
- You should have received a copy of the GNU General Public License along
- with groff; see the file LICENSE. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include <ctype.h>
- #include "cset.h"
-
- cset csalpha(CSET_BUILTIN);
- cset csupper(CSET_BUILTIN);
- cset cslower(CSET_BUILTIN);
- cset csdigit(CSET_BUILTIN);
- cset csxdigit(CSET_BUILTIN);
- cset csspace(CSET_BUILTIN);
- cset cspunct(CSET_BUILTIN);
- cset csalnum(CSET_BUILTIN);
- cset csprint(CSET_BUILTIN);
- cset csgraph(CSET_BUILTIN);
- cset cscntrl(CSET_BUILTIN);
-
- #define ISASCII(c) isascii(c)
- #if 0
- #define ISASCII(c) 1 /* use this is you have an ANSI ctype.h */
- #endif
-
- void cset::clear()
- {
- char *p = v;
- for (int i = 0; i <= UCHAR_MAX; i++)
- p[i] = 0;
- }
-
- cset::cset()
- {
- clear();
- }
-
- cset::cset(const char *s)
- {
- clear();
- while (*s)
- v[(unsigned char)*s++] = 1;
- }
-
- cset::cset(const unsigned char *s)
- {
- clear();
- while (*s)
- v[*s++] = 1;
- }
-
- cset::cset(cset_builtin)
- {
- // these are initialised by cset_init::cset_init()
- }
-
- cset &cset::operator|=(const cset &cs)
- {
- for (int i = 0; i <= UCHAR_MAX; i++)
- if (cs.v[i])
- v[i] = 1;
- return *this;
- }
-
-
- int cset_init::initialised = 0;
-
- cset_init::cset_init()
- {
- if (initialised)
- return;
- initialised = 1;
- for (int i = 0; i <= UCHAR_MAX; i++) {
- csalpha.v[i] = ISASCII(i) && isalpha(i);
- csupper.v[i] = ISASCII(i) && isupper(i);
- cslower.v[i] = ISASCII(i) && islower(i);
- csdigit.v[i] = ISASCII(i) && isdigit(i);
- csxdigit.v[i] = ISASCII(i) && isxdigit(i);
- csspace.v[i] = ISASCII(i) && isspace(i);
- cspunct.v[i] = ISASCII(i) && ispunct(i);
- csalnum.v[i] = ISASCII(i) && isalnum(i);
- csprint.v[i] = ISASCII(i) && isprint(i);
- csgraph.v[i] = ISASCII(i) && isgraph(i);
- cscntrl.v[i] = ISASCII(i) && iscntrl(i);
- }
- }
-