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 (at) google.com (Michael Riley) 17 // Modified: jpr (at) 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 #include <sstream> 30 31 int main(int argc, char **argv) { 32 using fst::script::FstClass; 33 using fst::script::VectorFstClass; 34 using fst::script::Reverse; 35 36 string usage = "Reverses the paths in an FST.\n\n Usage: "; 37 usage += argv[0]; 38 usage += " [in.fst [out.fst]]\n"; 39 40 std::set_new_handler(FailedNewHandler); 41 SET_FLAGS(usage.c_str(), &argc, &argv, true); 42 if (argc > 3) { 43 ShowUsage(); 44 return 1; 45 } 46 47 string in_name = (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : ""; 48 string out_name = argc > 2 ? argv[2] : ""; 49 50 FstClass *ifst = FstClass::Read(in_name); 51 if (!ifst) return 1; 52 53 VectorFstClass *out = new VectorFstClass(ifst->ArcType()); 54 55 Reverse(*ifst, out); 56 57 out->Write(out_name); 58 59 return 0; 60 } 61
