1/* Search for some characters in UTF-8/UTF-16/UTF-32 string. 2 Copyright (C) 1999, 2002, 2006, 2009-2010 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2002. 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 18size_t 19FUNC (const UNIT *str, const UNIT *reject) 20{ 21 /* Optimize two cases. */ 22 if (reject[0] == 0) 23 return U_STRLEN (str); 24 { 25 ucs4_t uc; 26 int count = U_STRMBTOUC (&uc, reject); 27 if (count >= 0 && reject[count] == 0) 28 { 29 const UNIT *found = U_STRCHR (str, uc); 30 if (found != NULL) 31 return found - str; 32 else 33 return U_STRLEN (str); 34 } 35 } 36 /* General case. */ 37 { 38 const UNIT *ptr = str; 39 40 for (;;) 41 { 42 ucs4_t uc; 43 int count = U_STRMBTOUC (&uc, ptr); 44 if (count == 0) 45 return ptr - str; 46 if (count < 0) 47 break; 48 if (U_STRCHR (reject, uc)) 49 return ptr - str; 50 ptr += count; 51 } 52 return U_STRLEN (str); 53 } 54} 55