lib/uniwbrk/wordbreak-property.c

   1 /* Word break property.
   2    Copyright (C) 2001-2003, 2006-2020 Free Software Foundation, Inc.
   3    Written by Bruno Haible <bruno@clisp.org>, 2009.
   4
   5    This program is free software: you can redistribute it and/or modify it
   6    under the terms of the GNU Lesser General Public License as published
   7    by the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 /* Specification.  */
  21 #include "uniwbrk.h"
  22
  23 #include "wbrkprop.h"
  24
  25 int
  26 uc_wordbreak_property (ucs4_t uc)
  27 {
  28   unsigned int index1 = uc >> wbrkprop_header_0;
  29   if (index1 < wbrkprop_header_1)
  30     {
  31       int lookup1 = uniwbrkprop.level1[index1];
  32       if (lookup1 >= 0)
  33         {
  34           unsigned int index2 = (uc >> wbrkprop_header_2) & wbrkprop_header_3;
  35           int lookup2 = uniwbrkprop.level2[lookup1 + index2];
  36           if (lookup2 >= 0)
  37             {
  38               unsigned int index3 = uc & wbrkprop_header_4;
  39               return uniwbrkprop.level3[lookup2 + index3];
  40             }
  41         }
  42     }
  43   return WBP_OTHER;
  44 }