| /* Grapheme cluster break property function. |
| Copyright (C) 2010-2020 Free Software Foundation, Inc. |
| Written by Ben Pfaff <blp@cs.stanford.edu>, 2010. |
| |
| 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 <https://www.gnu.org/licenses/>. */ |
| |
| #include <config.h> |
| |
| /* Specification. */ |
| #include "unigbrk.h" |
| |
| #include "gbrkprop.h" |
| |
| int |
| uc_graphemeclusterbreak_property (ucs4_t uc) |
| { |
| unsigned int index1 = uc >> gbrkprop_header_0; |
| if (index1 < gbrkprop_header_1) |
| { |
| int lookup1 = unigbrkprop.level1[index1]; |
| if (lookup1 >= 0) |
| { |
| unsigned int index2 = (uc >> gbrkprop_header_2) & gbrkprop_header_3; |
| int lookup2 = unigbrkprop.level2[lookup1 + index2]; |
| if (lookup2 >= 0) |
| { |
| unsigned int index3 = uc & gbrkprop_header_4; |
| return unigbrkprop.level3[lookup2 + index3]; |
| } |
| } |
| } |
| return GBP_OTHER; |
| } |