/* Search for some characters in UTF-32 string. Copyright (C) 1999, 2002, 2006, 2009-2021 Free Software Foundation, Inc. Written by Bruno Haible , 2002. This file is free software. It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+". You can redistribute it and/or modify it under either - the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version, or - the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version, or - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+". This file 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 and the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License and of the GNU General Public License along with this program. If not, see . */ #include /* Specification. */ #include "unistr.h" #define FUNC u32_strspn #define UNIT uint32_t #define U_STRCHR u32_strchr size_t FUNC (const UNIT *str, const UNIT *accept) { /* Optimize two cases. */ if (accept[0] == 0) return 0; if (accept[1] == 0) { ucs4_t uc = accept[0]; const UNIT *ptr = str; for (; *ptr != 0; ptr++) if (*ptr != uc) break; return ptr - str; } /* General case. */ { const UNIT *ptr = str; for (; *ptr != 0; ptr++) if (!U_STRCHR (accept, *ptr)) break; return ptr - str; } }