rx/rxcset.c

   1 /*      Copyright (C) 1995, 1996 Tom Lord
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU Library General Public License as published by
   5  * the Free Software Foundation; either version 2, or (at your option)
   6  * any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU Library General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Library General Public License
  14  * along with this software; see the file COPYING.  If not, write to
  15  * the Free Software Foundation, 59 Temple Place - Suite 330,
  16  * Boston, MA 02111-1307, USA.
  17  */
  18
  19 \f
  20 /*
  21  * Tom Lord (lord@cygnus.com, lord@gnu.ai.mit.edu)
  22  */
  23 \f
  24
  25
  26 #include "rxall.h"
  27 #include "rxcset.h"
  28 /* Utilities for manipulating bitset represntations of characters sets. */
  29
  30 #ifdef __STDC__
  31 rx_Bitset
  32 rx_cset (int size)
  33 #else
  34 rx_Bitset
  35 rx_cset (size)
  36      int size;
  37 #endif
  38 {
  39   rx_Bitset b;
  40   b = (rx_Bitset) malloc (rx_sizeof_bitset (size));
  41   if (b)
  42     rx_bitset_null (size, b);
  43   return b;
  44 }
  45
  46
  47 #ifdef __STDC__
  48 rx_Bitset
  49 rx_copy_cset (int size, rx_Bitset a)
  50 #else
  51 rx_Bitset
  52 rx_copy_cset (size, a)
  53      int size;
  54      rx_Bitset a;
  55 #endif
  56 {
  57   rx_Bitset cs;
  58   cs = rx_cset (size);
  59
  60   if (cs)
  61     rx_bitset_union (size, cs, a);
  62
  63   return cs;
  64 }
  65
  66
  67 #ifdef __STDC__
  68 void
  69 rx_free_cset (rx_Bitset c)
  70 #else
  71 void
  72 rx_free_cset (c)
  73      rx_Bitset c;
  74 #endif
  75 {
  76   if (c)
  77     free ((char *)c);
  78 }
  79