# -*- coding: utf-8 -*-
"""Helpers to encode Japanese characters.
I doubt that this currently works correctly.
"""
try:
import jaconv
except ImportError:
jaconv = None
[docs]
def encode_katakana(text: str) -> bytes:
"""I don't think this quite works yet."""
encoded = []
for char in text:
if jaconv:
# try to convert japanese text to half-katakanas
char = jaconv.z2h(jaconv.hira2kata(char))
# TODO: "the conversion may result in multiple characters"
# If that really can happen (I am not really shure), than the string would have to be split and every single
# character has to passed through the following lines.
if char in TXT_ENC_KATAKANA_MAP:
encoded.append(TXT_ENC_KATAKANA_MAP[char])
else:
# TODO doesn't this discard all that is not in the map? Can we be sure that the input does contain only
# encodable characters? We could at least throw an exception if encoding is not possible.
pass
return b"".join(encoded)
TXT_ENC_KATAKANA_MAP = {
# Maps UTF-8 Katakana symbols to KATAKANA Page Codes
# TODO: has this really to be hardcoded?
# Half-Width Katakanas
"｡": b"\xa1",
"｢": b"\xa2",
"｣": b"\xa3",
"､": b"\xa4",
"･": b"\xa5",
"ｦ": b"\xa6",
"ｧ": b"\xa7",
"ｨ": b"\xa8",
"ｩ": b"\xa9",
"ｪ": b"\xaa",
"ｫ": b"\xab",
"ｬ": b"\xac",
"ｭ": b"\xad",
"ｮ": b"\xae",
"ｯ": b"\xaf",
"ｰ": b"\xb0",
"ｱ": b"\xb1",
"ｲ": b"\xb2",
"ｳ": b"\xb3",
"ｴ": b"\xb4",
"ｵ": b"\xb5",
"ｶ": b"\xb6",
"ｷ": b"\xb7",
"ｸ": b"\xb8",
"ｹ": b"\xb9",
"ｺ": b"\xba",
"ｻ": b"\xbb",
"ｼ": b"\xbc",
"ｽ": b"\xbd",
"ｾ": b"\xbe",
"ｿ": b"\xbf",
"ﾀ": b"\xc0",
"ﾁ": b"\xc1",
"ﾂ": b"\xc2",
"ﾃ": b"\xc3",
"ﾄ": b"\xc4",
"ﾅ": b"\xc5",
"ﾆ": b"\xc6",
"ﾇ": b"\xc7",
"ﾈ": b"\xc8",
"ﾉ": b"\xc9",
"ﾊ": b"\xca",
"ﾋ": b"\xcb",
"ﾌ": b"\xcc",
"ﾍ": b"\xcd",
"ﾎ": b"\xce",
"ﾏ": b"\xcf",
"ﾐ": b"\xd0",
"ﾑ": b"\xd1",
"ﾒ": b"\xd2",
"ﾓ": b"\xd3",
"ﾔ": b"\xd4",
"ﾕ": b"\xd5",
"ﾖ": b"\xd6",
"ﾗ": b"\xd7",
"ﾘ": b"\xd8",
"ﾙ": b"\xd9",
"ﾚ": b"\xda",
"ﾛ": b"\xdb",
"ﾜ": b"\xdc",
"ﾝ": b"\xdd",
"ﾞ": b"\xde",
"ﾟ": b"\xdf",
}