fish_speech/text/clean.py

import itertools
import re

LANGUAGE_UNICODE_RANGE_MAP = {
    "ZH": [(0x4E00, 0x9FFF)],
    "JP": [(0x4E00, 0x9FFF), (0x3040, 0x309F), (0x30A0, 0x30FF), (0x31F0, 0x31FF)],
    "EN": [(0x0000, 0x007F)],
}

SYMBOLS_MAPPING = {
    "：": ",",
    "；": ",",
    "，": ",",
    "。": ".",
    "！": "!",
    "？": "?",
    "\n": ".",
    "·": ",",
    "、": ",",
    "...": "…",
    "$": ".",
    "“": "'",
    "”": "'",
    "‘": "'",
    "’": "'",
    "（": "'",
    "）": "'",
    "(": "'",
    ")": "'",
    "《": "'",
    "》": "'",
    "【": "'",
    "】": "'",
    "[": "'",
    "]": "'",
    "—": "-",
    "～": "-",
    "~": "-",
    "・": "-",
    "「": "'",
    "」": "'",
    ";": ",",
    ":": ",",
}

REPLACE_SYMBOL_REGEX = re.compile(
    "|".join(re.escape(p) for p in SYMBOLS_MAPPING.keys())
)
ALL_KNOWN_UTF8_RANGE = list(
    itertools.chain.from_iterable(LANGUAGE_UNICODE_RANGE_MAP.values())
)
REMOVE_UNKNOWN_SYMBOL_REGEX = re.compile(
    "[^"
    + "".join(
        f"{re.escape(chr(start))}-{re.escape(chr(end))}"
        for start, end in ALL_KNOWN_UTF8_RANGE
    )
    + "]"
)


def clean_text(text):
    # Clean the text
    text = text.strip()
    # Replace <p:(.*?)> with <PPP(.*?)PPP>
    text = re.sub(r"<p:(.*?)>", r"<PPP\1PPP>", text)
    # Replace all chinese symbols with their english counterparts
    text = REPLACE_SYMBOL_REGEX.sub(lambda x: SYMBOLS_MAPPING[x.group()], text)
    text = REMOVE_UNKNOWN_SYMBOL_REGEX.sub("", text)
    # Replace <PPP(.*?)PPP> with <p:(.*?)>
    text = re.sub(r"<PPP(.*?)PPP>", r"<p:\1>", text)

    return text