encoding

Character Encoding Utilities

Functions

Function	Description
`enc_utf8_valid`	Validate UTF-8 byte sequence. Returns 1 if valid, 0 if invalid.
`enc_utf8_char_count`	Count UTF-8 codepoints in buffer.
`enc_utf8_byte_len`	Byte length of first nchars codepoints.
`enc_is_ascii`	Check if all bytes are ASCII (< 128).
`enc_to_upper`	Convert ASCII lowercase to uppercase. Returns length.
`enc_to_lower`	Convert ASCII uppercase to lowercase. Returns length.
`enc_latin1_to_utf8`	Convert Latin-1 (ISO 8859-1) to UTF-8. Returns output length.
`enc_utf8_codepoint_at`	Read UTF-8 codepoint at byte offset. Returns codepoint value.
`enc_utf8_next`	Get next byte offset after codepoint at given offset.

fn enc_utf8_valid(buf: &i8, len: i64) -> i64

Validate UTF-8 byte sequence. Returns 1 if valid, 0 if invalid.

fn enc_utf8_char_count(buf: &i8, len: i64) -> i64

Count UTF-8 codepoints in buffer.

fn enc_utf8_byte_len(buf: &i8, len: i64, nchars: i64) -> i64

Byte length of first nchars codepoints.

fn enc_is_ascii(buf: &i8, len: i64) -> i64

Check if all bytes are ASCII (< 128).

fn enc_to_upper(buf: &i8, len: i64, out: &i8) -> i64

Convert ASCII lowercase to uppercase. Returns length.

fn enc_to_lower(buf: &i8, len: i64, out: &i8) -> i64

Convert ASCII uppercase to lowercase. Returns length.

fn enc_latin1_to_utf8(src: &i8, slen: i64, out: &i8) -> i64

Convert Latin-1 (ISO 8859-1) to UTF-8. Returns output length.

fn enc_utf8_codepoint_at(buf: &i8, off: i64) -> i64

Read UTF-8 codepoint at byte offset. Returns codepoint value.

fn enc_utf8_next(buf: &i8, off: i64, len: i64) -> i64

Get next byte offset after codepoint at given offset.