wehub-resource-sync
37 lines
1.1 KiB
Python
37 lines
1.1 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
|
|
#
|
|
# This source code is licensed under the MIT license found in the
|
|
# LICENSE file in the root directory of this source tree.
|
|
|
|
from dataclasses import dataclass, field
|
|
|
|
from fairseq import file_utils
|
|
from fairseq.data.encoders import register_bpe
|
|
from fairseq.dataclass import FairseqDataclass
|
|
|
|
|
|
@dataclass
|
|
class fastBPEConfig(FairseqDataclass):
|
|
bpe_codes: str = field(default="???", metadata={"help": "path to fastBPE BPE"})
|
|
|
|
|
|
@register_bpe("fastbpe", dataclass=fastBPEConfig)
|
|
class fastBPE(object):
|
|
def __init__(self, cfg):
|
|
if cfg.bpe_codes is None:
|
|
raise ValueError("--bpe-codes is required for --bpe=fastbpe")
|
|
codes = file_utils.cached_path(cfg.bpe_codes)
|
|
try:
|
|
import fastBPE
|
|
|
|
self.bpe = fastBPE.fastBPE(codes)
|
|
self.bpe_symbol = "@@ "
|
|
except ImportError:
|
|
raise ImportError("Please install fastBPE with: pip install fastBPE")
|
|
|
|
def encode(self, x: str) -> str:
|
|
return self.bpe.apply([x])[0]
|
|
|
|
def decode(self, x: str) -> str:
|
|
return (x + " ").replace(self.bpe_symbol, "").rstrip()
|