1 /* Look at first character in UTF-32 string. 2 Copyright (C) 2002, 2006-2007, 2009-2021 Free Software Foundation, Inc. 3 Written by Bruno Haible <bruno@clisp.org>, 2002. 4 5 This file is free software: you can redistribute it and/or modify 6 it under the terms of the GNU Lesser General Public License as 7 published by the Free Software Foundation; either version 2.1 of the 8 License, or (at your option) any later version. 9 10 This file 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 13 GNU 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 #if defined IN_LIBUNISTRING 21 /* Tell unistr.h to declare u32_mbtouc_unsafe as 'extern', not 22 'static inline'. */ 23 # include "unistring-notinline.h" 24 #endif 25 26 /* Specification. */ 27 #include "unistr.h" 28 29 #if !HAVE_INLINE 30 31 int 32 u32_mbtouc_unsafe (ucs4_t *puc, const uint32_t *s, size_t n) /* */ 33 { 34 uint32_t c = *s; 35 36 if (c < 0xd800 || (c >= 0xe000 && c < 0x110000)) 37 *puc = c; 38 else 39 /* invalid multibyte character */ 40 *puc = 0xfffd; 41 return 1; 42 } 43 44 #endif