1/* Simple case mapping for Unicode characters. 2 Copyright (C) 2002, 2006, 2009-2010 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 <http://www.gnu.org/licenses/>. */ 17 18ucs4_t 19FUNC (ucs4_t uc) 20{ 21 unsigned int index1 = uc >> mapping_header_0; 22 if (index1 < mapping_header_1) 23 { 24 int lookup1 = u_mapping.level1[index1]; 25 if (lookup1 >= 0) 26 { 27 unsigned int index2 = (uc >> mapping_header_2) & mapping_header_3; 28 int lookup2 = u_mapping.level2[lookup1 + index2]; 29 if (lookup2 >= 0) 30 { 31 unsigned int index3 = (uc & mapping_header_4); 32 int lookup3 = u_mapping.level3[lookup2 + index3]; 33 34 return uc + lookup3; 35 } 36 } 37 } 38 return uc; 39} 40