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// fstarcsort.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: riley@google.com (Michael Riley)
// Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass
//
// \file
// Sorts arcs of an FST.
//
#include <string>
#include <fst/compat.h>
#include <fst/script/arcsort.h>
DEFINE_string(sort_type, "ilabel",
"Comparison method, one of: \"ilabel\", \"olabel\"");
int main(int argc, char **argv) {
using fst::script::FstClass;
using fst::script::MutableFstClass;
using fst::script::ArcSort;
string usage = "Sorts arcs of an FST.\n\n Usage: ";
usage += argv[0];
usage += " [in.fst [out.fst]]\n";
std::set_new_handler(FailedNewHandler);
SetFlags(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] : "";
MutableFstClass *fst = MutableFstClass::Read(in_name, true);
if (!fst) return 1;
if (FLAGS_sort_type == "ilabel") {
ArcSort(fst, fst::script::ILABEL_COMPARE);
} else if (FLAGS_sort_type == "olabel") {
ArcSort(fst, fst::script::OLABEL_COMPARE);
} else {
LOG(ERROR) << argv[0] << ": Unknown sort type \""
<< FLAGS_sort_type << "\"\n";
return 1;
}
fst->Write(out_name);
return 0;
}
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