diff options
Diffstat (limited to 'util.c')
| -rw-r--r-- | util.c | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -248,6 +248,41 @@ char *utf16be_to_utf8(uint8_t *buf, uint32_t max_size) return out; } +int utf8_codepoint(const char **text) +{ + uint8_t initial = **text; + (*text)++; + if (initial < 0x80) { + return initial; + } + int base; + uint8_t extended_bytes; + if ((initial & 0xE0) == 0xC0) { + base = 0x80; + initial &= 0x1F; + extended_bytes = 1; + } else if ((initial & 0xF0) == 0xE0) { + base = 0x800; + initial &= 0xF; + extended_bytes = 2; + } else if ((initial & 0xF8) == 0xF0) { + base = 0x10000; + initial &= 0x7; + extended_bytes = 3; + } + int value = initial; + for (uint8_t i = 0; i < extended_bytes; i++) + { + if ((**text & 0xC0) != 0x80) { + return -1; + } + value = value << 6; + value |= (**text) & 0x3F; + (*text)++; + } + return value + base; +} + char is_path_sep(char c) { #ifdef _WIN32 |