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// fstepsnormalize.cc
// 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
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Copyright 2005-2010 Google, Inc.
// Author: allauzen@google.com (Cyril Allauzen)
// Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass
//
// \file
// Epsilon normalizes an FST.
//
#include <fst/script/epsnormalize.h>
DEFINE_bool(eps_norm_output, false, "Normalize output epsilons");
int main(int argc, char **argv) {
namespace s = fst::script;
using fst::script::FstClass;
using fst::script::VectorFstClass;
string usage = "Epsilon normalizes an FST.\n\n Usage: ";
usage += argv[0];
usage += " [in.fst [out.fst]]\n";
std::set_new_handler(FailedNewHandler);
SET_FLAGS(usage.c_str(), &argc, &argv, true);
if (argc > 3) {
ShowUsage();
return 1;
}
string in_name = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : "";
string out_name = argc > 2 ? argv[2] : "";
FstClass *ifst = FstClass::Read(in_name);
if (!ifst) return 1;
fst::EpsNormalizeType eps_norm_type = FLAGS_eps_norm_output ?
fst::EPS_NORM_OUTPUT : fst::EPS_NORM_INPUT;
VectorFstClass ofst(ifst->ArcType());
s::EpsNormalize(*ifst, &ofst, eps_norm_type);
ofst.Write(out_name);
return 0;
}
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