158 lines
4.6 KiB
Python
158 lines
4.6 KiB
Python
# -*- encoding: utf-8 -*-
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import functools
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import logging
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import pickle
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from pathlib import Path
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from typing import Any, Dict, Iterable, List, NamedTuple, Set, Tuple, Union
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import numpy as np
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import yaml
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import warnings
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root_dir = Path(__file__).resolve().parent
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logger_initialized = {}
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class TokenIDConverter:
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def __init__(
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self,
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token_list: Union[List, str],
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):
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self.token_list = token_list
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self.unk_symbol = token_list[-1]
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self.token2id = {v: i for i, v in enumerate(self.token_list)}
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self.unk_id = self.token2id[self.unk_symbol]
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def get_num_vocabulary_size(self) -> int:
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return len(self.token_list)
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def ids2tokens(self, integers: Union[np.ndarray, Iterable[int]]) -> List[str]:
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if isinstance(integers, np.ndarray) and integers.ndim != 1:
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raise TokenIDConverterError(f"Must be 1 dim ndarray, but got {integers.ndim}")
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return [self.token_list[i] for i in integers]
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def tokens2ids(self, tokens: Iterable[str]) -> List[int]:
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return [self.token2id.get(i, self.unk_id) for i in tokens]
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class CharTokenizer:
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def __init__(
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self,
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symbol_value: Union[Path, str, Iterable[str]] = None,
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space_symbol: str = "<space>",
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remove_non_linguistic_symbols: bool = False,
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):
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self.space_symbol = space_symbol
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self.non_linguistic_symbols = self.load_symbols(symbol_value)
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self.remove_non_linguistic_symbols = remove_non_linguistic_symbols
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@staticmethod
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def load_symbols(value: Union[Path, str, Iterable[str]] = None) -> Set:
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if value is None:
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return set()
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if isinstance(value, Iterable[str]):
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return set(value)
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file_path = Path(value)
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if not file_path.exists():
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logging.warning("%s doesn't exist.", file_path)
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return set()
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with file_path.open("r", encoding="utf-8") as f:
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return set(line.rstrip() for line in f)
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def text2tokens(self, line: Union[str, list]) -> List[str]:
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tokens = []
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while len(line) != 0:
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for w in self.non_linguistic_symbols:
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if line.startswith(w):
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if not self.remove_non_linguistic_symbols:
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tokens.append(line[: len(w)])
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line = line[len(w) :]
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break
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else:
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t = line[0]
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if t == " ":
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t = "<space>"
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tokens.append(t)
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line = line[1:]
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return tokens
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def tokens2text(self, tokens: Iterable[str]) -> str:
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tokens = [t if t != self.space_symbol else " " for t in tokens]
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return "".join(tokens)
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def __repr__(self):
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return (
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f"{self.__class__.__name__}("
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f'space_symbol="{self.space_symbol}"'
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f'non_linguistic_symbols="{self.non_linguistic_symbols}"'
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f")"
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)
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class Hypothesis(NamedTuple):
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"""Hypothesis data type."""
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yseq: np.ndarray
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score: Union[float, np.ndarray] = 0
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scores: Dict[str, Union[float, np.ndarray]] = dict()
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states: Dict[str, Any] = dict()
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def asdict(self) -> dict:
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"""Convert data to JSON-friendly dict."""
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return self._replace(
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yseq=self.yseq.tolist(),
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score=float(self.score),
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scores={k: float(v) for k, v in self.scores.items()},
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)._asdict()
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def read_yaml(yaml_path: Union[str, Path]) -> Dict:
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if not Path(yaml_path).exists():
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raise FileExistsError(f"The {yaml_path} does not exist.")
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with open(str(yaml_path), "rb") as f:
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data = yaml.load(f, Loader=yaml.Loader)
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return data
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@functools.lru_cache()
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def get_logger(name="funasr_torch"):
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"""Initialize and get a logger by name.
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If the logger has not been initialized, this method will initialize the
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logger by adding one or two handlers, otherwise the initialized logger will
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be directly returned. During initialization, a StreamHandler will always be
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added.
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Args:
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name (str): Logger name.
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Returns:
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logging.Logger: The expected logger.
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"""
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logger = logging.getLogger(name)
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if name in logger_initialized:
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return logger
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for logger_name in logger_initialized:
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if name.startswith(logger_name):
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return logger
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formatter = logging.Formatter(
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"[%(asctime)s] %(name)s %(levelname)s: %(message)s", datefmt="%Y/%m/%d %H:%M:%S"
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)
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sh = logging.StreamHandler()
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sh.setFormatter(formatter)
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logger.addHandler(sh)
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logger_initialized[name] = True
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logger.propagate = False
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return logger
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