1// fstreverse.cc 2 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14// 15// Copyright 2005-2010 Google, Inc. 16// Author: riley@google.com (Michael Riley) 17// Modified: jpr@google.com (Jake Ratkiewicz) Changed to use FstClass 18// 19// \file 20// Reverses the paths in an FST. 21// 22 23#include <string> 24 25#include <fst/script/reverse.h> 26#include <fst/script/fst-class.h> 27#include <iostream> 28#include <fstream> 29 30int main(int argc, char **argv) { 31 using fst::script::FstClass; 32 using fst::script::VectorFstClass; 33 using fst::script::Reverse; 34 35 string usage = "Reverses the paths in an FST.\n\n Usage: "; 36 usage += argv[0]; 37 usage += " [in.fst [out.fst]]\n"; 38 39 std::set_new_handler(FailedNewHandler); 40 SetFlags(usage.c_str(), &argc, &argv, true); 41 if (argc > 3) { 42 ShowUsage(); 43 return 1; 44 } 45 46 string in_name = (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : ""; 47 string out_name = argc > 2 ? argv[2] : ""; 48 49 FstClass *ifst = FstClass::Read(in_name); 50 if (!ifst) return 1; 51 52 VectorFstClass *out = new VectorFstClass(ifst->ArcType()); 53 54 Reverse(*ifst, out); 55 56 out->Write(out_name); 57 58 return 0; 59} 60