1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2012 Lennart Poettering
18 #define UTF8_REPLACEMENT_CHARACTER "\xef\xbf\xbd"
19 #define UTF8_BYTE_ORDER_MARK "\xef\xbb\xbf"
21 bool unichar_is_valid(char32_t c);
23 const char *utf8_is_valid(const char *s) _pure_;
24 char *ascii_is_valid(const char *s) _pure_;
25 char *ascii_is_valid_n(const char *str, size_t len);
27 bool utf8_is_printable_newline(const char* str, size_t length, bool newline) _pure_;
28 #define utf8_is_printable(str, length) utf8_is_printable_newline(str, length, true)
30 char *utf8_escape_invalid(const char *s);
31 char *utf8_escape_non_printable(const char *str);
33 size_t utf8_encode_unichar(char *out_utf8, char32_t g);
34 char *utf16_to_utf8(const void *s, size_t length);
36 int utf8_encoded_valid_unichar(const char *str);
37 int utf8_encoded_to_unichar(const char *str, char32_t *ret_unichar);
39 static inline bool utf16_is_surrogate(char16_t c) {
40 return (0xd800 <= c && c <= 0xdfff);
43 static inline bool utf16_is_trailing_surrogate(char16_t c) {
44 return (0xdc00 <= c && c <= 0xdfff);
47 static inline char32_t utf16_surrogate_pair_to_unichar(char16_t lead, char16_t trail) {
48 return ((lead - 0xd800) << 10) + (trail - 0xdc00) + 0x10000;
51 size_t utf8_n_codepoints(const char *str);
52 size_t utf8_console_width(const char *str);