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#!/usr/bin/env python
# Copyright (c) Facebook, Inc. and its affiliates.
# All rights reserved.
#
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.
from __future__ import absolute_import, division, print_function, unicode_literals
import argparse
import sentencepiece as spm
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
"--model", required=True, help="sentencepiece model to use for decoding"
)
parser.add_argument("--input", required=True, help="input file to decode")
parser.add_argument("--input_format", choices=["piece", "id"], default="piece")
args = parser.parse_args()
sp = spm.SentencePieceProcessor()
sp.Load(args.model)
if args.input_format == "piece":
def decode(l):
return "".join(sp.DecodePieces(l))
elif args.input_format == "id":
def decode(l):
return "".join(sp.DecodeIds(l))
else:
raise NotImplementedError
def tok2int(tok):
# remap reference-side <unk> (represented as <<unk>>) to 0
return int(tok) if tok != "<<unk>>" else 0
with open(args.input, "r", encoding="utf-8") as h:
for line in h:
if args.input_format == "id":
print(decode(list(map(tok2int, line.rstrip().split()))))
elif args.input_format == "piece":
print(decode(line.rstrip().split()))
if __name__ == "__main__":
main()
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