1 2 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // you may not use this file except in compliance with the License. 4 // You may obtain a copy of the License at 5 // 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 // 14 // Copyright 2005-2010 Google, Inc. 15 // Author: johans (at) google.com (Johan Schalkwyk) 16 // Modified: jpr (at) google.com (Jake Ratkiewicz) to use FstClass 17 // 18 19 #include <fst/script/replace.h> 20 21 DEFINE_bool(epsilon_on_replace, false, "Create an espilon arc when recursing"); 22 23 int main(int argc, char **argv) { 24 namespace s = fst::script; 25 using fst::script::FstClass; 26 using fst::script::VectorFstClass; 27 28 string usage = "Recursively replaces FST arcs with other FST(s).\n\n" 29 " Usage: "; 30 usage += argv[0]; 31 usage += " root.fst rootlabel [rule1.fst label1 ...] [out.fst]\n"; 32 33 std::set_new_handler(FailedNewHandler); 34 SetFlags(usage.c_str(), &argc, &argv, true); 35 if (argc < 4) { 36 ShowUsage(); 37 return 1; 38 } 39 40 string in_fname = argv[1]; 41 string out_fname = argc % 2 == 0 ? argv[argc - 1] : ""; 42 43 FstClass *ifst = FstClass::Read(in_fname); 44 if (!ifst) return 1; 45 46 typedef int64 Label; 47 typedef pair<Label, const s::FstClass* > FstTuple; 48 vector<FstTuple> fst_tuples; 49 Label root = atoll(argv[2]); 50 fst_tuples.push_back(make_pair(root, ifst)); 51 52 for (size_t i = 3; i < argc - 1; i += 2) { 53 ifst = s::FstClass::Read(argv[i]); 54 if (!ifst) return 1; 55 Label lab = atoll(argv[i + 1]); 56 fst_tuples.push_back(make_pair(lab, ifst)); 57 } 58 59 VectorFstClass ofst(ifst->ArcType()); 60 Replace(fst_tuples, &ofst, root, FLAGS_epsilon_on_replace); 61 62 ofst.Write(out_fname); 63 64 return 0; 65 } 66
