Line data    Source code

       1             : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
       2             : 
       3             : #pragma once
       4             : 
       5             : /***
       6             :   This file is part of systemd.
       7             : 
       8             :   Copyright 2012 Lennart Poettering
       9             : 
      10             :   systemd is free software; you can redistribute it and/or modify it
      11             :   under the terms of the GNU Lesser General Public License as published by
      12             :   the Free Software Foundation; either version 2.1 of the License, or
      13             :   (at your option) any later version.
      14             : 
      15             :   systemd is distributed in the hope that it will be useful, but
      16             :   WITHOUT ANY WARRANTY; without even the implied warranty of
      17             :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      18             :   Lesser General Public License for more details.
      19             : 
      20             :   You should have received a copy of the GNU Lesser General Public License
      21             :   along with systemd; If not, see <http://www.gnu.org/licenses/>.
      22             : ***/
      23             : 
      24             : #include <stdbool.h>
      25             : 
      26             : #include "macro.h"
      27             : 
      28             : #define UTF8_REPLACEMENT_CHARACTER "\xef\xbf\xbd"
      29             : 
      30             : bool unichar_is_valid(uint32_t c);
      31             : 
      32             : const char *utf8_is_valid(const char *s) _pure_;
      33             : char *ascii_is_valid(const char *s) _pure_;
      34             : 
      35             : bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_;
      36             : #define utf8_is_printable(str, length) utf8_is_printable_newline(str, length, true)
      37             : 
      38             : char *utf8_escape_invalid(const char *s);
      39             : char *utf8_escape_non_printable(const char *str);
      40             : 
      41             : size_t utf8_encode_unichar(char *out_utf8, uint32_t g);
      42             : char *utf16_to_utf8(const void *s, size_t length);
      43             : 
      44             : int utf8_encoded_valid_unichar(const char *str);
      45             : int utf8_encoded_to_unichar(const char *str);
      46             : 
      47          10 : static inline bool utf16_is_surrogate(uint16_t c) {
      48          10 :         return (0xd800 <= c && c <= 0xdfff);
      49             : }
      50             : 
      51           9 : static inline bool utf16_is_trailing_surrogate(uint16_t c) {
      52           9 :         return (0xdc00 <= c && c <= 0xdfff);
      53             : }
      54             : 
      55           2 : static inline uint32_t utf16_surrogate_pair_to_unichar(uint16_t lead, uint16_t trail) {
      56           2 :                 return ((lead - 0xd800) << 10) + (trail - 0xdc00) + 0x10000;
      57             : }