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