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PaddleSpeech/utils/fst/eps2disambig.pl

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#!/usr/bin/env perl
# Copyright 2010-2011 Microsoft Corporation
# 2015 Guoguo Chen
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
# WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
# MERCHANTABLITY OR NON-INFRINGEMENT.
# See the Apache 2 License for the specific language governing permissions and
# limitations under the License.
# This script replaces epsilon with #0 on the input side only, of the G.fst
# acceptor.
while(<>){
if (/\s+#0\s+/) {
print STDERR "$0: ERROR: LM has word #0, " .
"which is reserved as disambiguation symbol\n";
exit 1;
}
s:^(\d+\s+\d+\s+)\<eps\>(\s+):$1#0$2:;
print;
}