kc3-lang/gnulib/lib/unictype/combining.c

• Show log

  Commit

• Hash : 5a6e55c1
  Author :
  Date : 2007-11-13T00:15:53
  

  Unicode character classification functions.
  

Download

• lib/unictype/combining.c

• /* Combining classes of Unicode characters.
     Copyright (C) 2002, 2006 Free Software Foundation, Inc.
     Written by Bruno Haible <bruno@clisp.org>, 2002.
  
     This program is free software: you can redistribute it and/or modify it
     under the terms of the GNU Lesser General Public License as published
     by the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
  
     This program 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
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  /* Specification.  */
  #include "unictype.h"
  
  /* Define u_combclass table.  */
  #include "combining.h"
  
  int
  uc_combining_class (ucs4_t uc)
  {
    unsigned int index1 = uc >> combclass_header_0;
    if (index1 < combclass_header_1)
      {
        int lookup1 = u_combclass.level1[index1];
        if (lookup1 >= 0)
  	{
  	  unsigned int index2 = (uc >> combclass_header_2) & combclass_header_3;
  	  int lookup2 = u_combclass.level2[lookup1 + index2];
  	  if (lookup2 >= 0)
  	    {
  	      unsigned int index3 = (uc & combclass_header_4);
  	      unsigned int lookup3 = u_combclass.level3[lookup2 + index3];
  
  	      return lookup3;
  	    }
  	}
      }
    return 0;
  }
  

Download