/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** This file is part of systemd. Copyright 2012 Lennart Poettering systemd 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 2.1 of the License, or (at your option) any later version. systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <stdbool.h> #include "macro.h" #define UTF8_REPLACEMENT_CHARACTER "\xef\xbf\xbd" bool unichar_is_valid(uint32_t c); const char *utf8_is_valid(const char *s) _pure_; char *ascii_is_valid(const char *s) _pure_; bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_; #define utf8_is_printable(str, length) utf8_is_printable_newline(str, length, true) char *utf8_escape_invalid(const char *s); char *utf8_escape_non_printable(const char *str); size_t utf8_encode_unichar(char *out_utf8, uint32_t g); char *utf16_to_utf8(const void *s, size_t length); int utf8_encoded_valid_unichar(const char *str); int utf8_encoded_to_unichar(const char *str); static inline bool utf16_is_surrogate(uint16_t c) { return (0xd800 <= c && c <= 0xdfff); } static inline bool utf16_is_trailing_surrogate(uint16_t c) { return (0xdc00 <= c && c <= 0xdfff); } static inline uint32_t utf16_surrogate_pair_to_unichar(uint16_t lead, uint16_t trail) { return ((lead - 0xd800) << 10) + (trail - 0xdc00) + 0x10000; }