Module charset 

Vietnamese charset conversion.

Implements legacy charset encode/decode using the same 213-character pivot table approach as x-unikey’s vnconv. Each charset is defined by a single 213-element lookup table mapping the internal index to the charset’s byte representation.

Supported charsets: Unicode (UTF-8) — native, no conversion needed TCVN3 (ABC) — single-byte, the most common legacy charset VNI-WIN — double-byte, second most common legacy VIQR — ASCII quoted-readable WinCP1258 — Windows Vietnamese code page UnicodeDecomposed — NFD (combining diacritics)

Enums

VietCharset

Supported Vietnamese charsets.

Functions

decode

Decode charset bytes to a UTF-8 string.

encode

Encode a UTF-8 string to target charset bytes.

remove_tone

Remove tone marks from a Vietnamese UTF-8 string. e.g. “tiếng Việt” → “tiêng Viêt”