1f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// fstminimize.cc 2f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 3f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Licensed under the Apache License, Version 2.0 (the "License"); 4f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// you may not use this file except in compliance with the License. 5f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// You may obtain a copy of the License at 6f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// 7f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// http://www.apache.org/licenses/LICENSE-2.0 8f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// 9f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Unless required by applicable law or agreed to in writing, software 10f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// distributed under the License is distributed on an "AS IS" BASIS, 11f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// See the License for the specific language governing permissions and 13f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// limitations under the License. 14f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// 15f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Copyright 2005-2010 Google, Inc. 16f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Author: riley@google.com (Michael Riley) 17f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass 18f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// 19f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// \file 20f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// Minimizes a deterministic FSA. 21f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson// 22f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 23f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson#include <fst/script/minimize.h> 24f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 25f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian HodsonDEFINE_double(delta, fst::kDelta, "Comparison/quantization delta"); 26f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 27f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 28f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodsonint main(int argc, char **argv) { 29f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson namespace s = fst::script; 30f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson using fst::script::FstClass; 31f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson using fst::script::MutableFstClass; 32f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson using fst::script::VectorFstClass; 33f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 34f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson string usage = "Minimizes a deterministic FST.\n\n Usage: "; 35f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson usage += argv[0]; 36f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson usage += " [in.fst [out1.fst [out2.fst]]]\n"; 37f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 38f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson std::set_new_handler(FailedNewHandler); 39f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson SetFlags(usage.c_str(), &argc, &argv, true); 40f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson if (argc > 4) { 41f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson ShowUsage(); 42f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson return 1; 43f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson } 44f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 45f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson string in_name = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : ""; 46f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson string out1_name = (argc > 2 && strcmp(argv[2], "-") != 0) ? argv[2] : ""; 47f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson string out2_name = (argc > 3 && strcmp(argv[3], "-") != 0) ? argv[3] : ""; 48f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 49f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson if (out1_name.empty() && out2_name.empty() && argc > 3) { 50f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson LOG(ERROR) << "Both outputs can't be standard out."; 51f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson return 1; 52f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson } 53f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 54f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson MutableFstClass *fst1 = MutableFstClass::Read(in_name, true); 55f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson if (!fst1) return 1; 56f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 57f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson MutableFstClass *fst2 = argc > 3 ? 58f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson new VectorFstClass(fst1->ArcType()) : 0; 59f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 60f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson s::Minimize(fst1, fst2, FLAGS_delta); 61f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 62f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson fst1->Write(out1_name); 63f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson if (fst2) 64f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson fst2->Write(out2_name); 65f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson 66f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson return 0; 67f4c12fce1ee58e670f9c3fce46c40296ba9ee8a2Ian Hodson} 68