1 // fstclosure.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) to use FstClass 18 // 19 // \file 20 // Creates the Kleene closure of an FST. 21 // 22 23 #include <fst/script/closure.h> 24 25 DEFINE_bool(closure_plus, false, 26 "Do not add the empty path (T+ instead of T*)"); 27 28 int main(int argc, char **argv) { 29 using fst::script::FstClass; 30 using fst::script::MutableFstClass; 31 32 string usage = "Creates the Kleene closure of an FST.\n\n Usage: "; 33 usage += argv[0]; 34 usage += " [in.fst [out.fst]]\n"; 35 36 std::set_new_handler(FailedNewHandler); 37 SET_FLAGS(usage.c_str(), &argc, &argv, true); 38 if (argc > 3) { 39 ShowUsage(); 40 return 1; 41 } 42 43 string in_fname = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : ""; 44 string out_fname = argc > 2 ? argv[2] : ""; 45 46 MutableFstClass *fst = MutableFstClass::Read(in_fname, true); 47 if (!fst) return 1; 48 49 fst::ClosureType closure_type = 50 FLAGS_closure_plus ? fst::CLOSURE_PLUS : fst::CLOSURE_STAR; 51 52 fst::script::Closure(fst, closure_type); 53 fst->Write(out_fname); 54 55 return 0; 56 } 57
