root/maint/gnulib/lib/unigbrk/uc-gbrk-prop.c

/* */

DEFINITIONS

1. uc_graphemeclusterbreak_property

   1 /* Grapheme cluster break property function.
   2    Copyright (C) 2010-2021 Free Software Foundation, Inc.
   3    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
   4 
   5    This file is free software.
   6    It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
   7    You can redistribute it and/or modify it under either
   8      - the terms of the GNU Lesser General Public License as published
   9        by the Free Software Foundation; either version 3, or (at your
  10        option) any later version, or
  11      - the terms of the GNU General Public License as published by the
  12        Free Software Foundation; either version 2, or (at your option)
  13        any later version, or
  14      - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
  15 
  16    This file is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19    Lesser General Public License and the GNU General Public License
  20    for more details.
  21 
  22    You should have received a copy of the GNU Lesser General Public
  23    License and of the GNU General Public License along with this
  24    program.  If not, see <https://www.gnu.org/licenses/>.  */
  25 
  26 #include <config.h>
  27 
  28 /* Specification.  */
  29 #include "unigbrk.h"
  30 
  31 #include "gbrkprop.h"
  32 
  33 int
  34 uc_graphemeclusterbreak_property (ucs4_t uc)
     /*  */
  35 {
  36   unsigned int index1 = uc >> gbrkprop_header_0;
  37   if (index1 < gbrkprop_header_1)
  38     {
  39       int lookup1 = unigbrkprop.level1[index1];
  40       if (lookup1 >= 0)
  41         {
  42           unsigned int index2 = (uc >> gbrkprop_header_2) & gbrkprop_header_3;
  43           int lookup2 = unigbrkprop.level2[lookup1 + index2];
  44           if (lookup2 >= 0)
  45             {
  46               unsigned int index3 = uc & gbrkprop_header_4;
  47               return unigbrkprop.level3[lookup2 + index3];
  48             }
  49         }
  50     }
  51   return GBP_OTHER;
  52 }

/* */