src/lib-roff/cset.cpp

   1 /*@
   2  * Copyright (c) 2014 - 2015 Steffen (Daode) Nurpmeso <sdaoden@users.sf.net>.
   3  *
   4  * Copyright (C) 1989 - 1992, 2004 Free Software Foundation, Inc.
   5  *      Written by James Clark (jjc@jclark.com)
   6  *
   7  * This is free software; you can redistribute it and/or modify it under
   8  * the terms of the GNU General Public License as published by the Free
   9  * Software Foundation; either version 2, or (at your option) any later
  10  * version.
  11  *
  12  * This is distributed in the hope that it will be useful, but WITHOUT ANY
  13  * WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15  * for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with groff; see the file COPYING.  If not, write to the Free Software
  19  * Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA.
  20  */
  21
  22 #include "config.h"
  23 #include "lib.h"
  24
  25 #include <ctype.h>
  26
  27 #include "cset.h"
  28
  29 cset csalpha(CSET_BUILTIN);
  30 cset csupper(CSET_BUILTIN);
  31 cset cslower(CSET_BUILTIN);
  32 cset csdigit(CSET_BUILTIN);
  33 cset csxdigit(CSET_BUILTIN);
  34 cset csspace(CSET_BUILTIN);
  35 cset cspunct(CSET_BUILTIN);
  36 cset csalnum(CSET_BUILTIN);
  37 cset csprint(CSET_BUILTIN);
  38 cset csgraph(CSET_BUILTIN);
  39 cset cscntrl(CSET_BUILTIN);
  40
  41 #ifdef isascii /* FIXME lib.h? */
  42 #define ISASCII(c) isascii(c)
  43 #else
  44 #define ISASCII(c) (1)
  45 #endif
  46
  47 void cset::clear()
  48 {
  49   char *p = v;
  50   for (int i = 0; i <= UCHAR_MAX; i++)
  51     p[i] = 0;
  52 }
  53
  54 cset::cset()
  55 {
  56   clear();
  57 }
  58
  59 cset::cset(const char *s)
  60 {
  61   clear();
  62   while (*s)
  63     v[(unsigned char)*s++] = 1;
  64 }
  65
  66 cset::cset(const unsigned char *s)
  67 {
  68   clear();
  69   while (*s)
  70     v[*s++] = 1;
  71 }
  72
  73 cset::cset(cset_builtin)
  74 {
  75   // these are initialised by cset_init::cset_init()
  76 }
  77
  78 cset &cset::operator|=(const cset &cs)
  79 {
  80   for (int i = 0; i <= UCHAR_MAX; i++)
  81     if (cs.v[i])
  82       v[i] = 1;
  83   return *this;
  84 }
  85
  86
  87 int cset_init::initialised = 0;
  88
  89 cset_init::cset_init()
  90 {
  91   if (initialised)
  92     return;
  93   initialised = 1;
  94   for (int i = 0; i <= UCHAR_MAX; i++) {
  95     csalpha.v[i] = ISASCII(i) && isalpha(i);
  96     csupper.v[i] = ISASCII(i) && isupper(i);
  97     cslower.v[i] = ISASCII(i) && islower(i);
  98     csdigit.v[i] = ISASCII(i) && isdigit(i);
  99     csxdigit.v[i] = ISASCII(i) && isxdigit(i);
 100     csspace.v[i] = ISASCII(i) && isspace(i);
 101     cspunct.v[i] = ISASCII(i) && ispunct(i);
 102     csalnum.v[i] = ISASCII(i) && isalnum(i);
 103     csprint.v[i] = ISASCII(i) && isprint(i);
 104     csgraph.v[i] = ISASCII(i) && isgraph(i);
 105     cscntrl.v[i] = ISASCII(i) && iscntrl(i);
 106   }
 107 }
 108
 109 // s-it2-mode