1 // pdtcompose.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 // 18 // \file 19 // Composes a PDT and an FST. 20 // 21 22 #include <vector> 23 using std::vector; 24 #include <utility> 25 using std::pair; using std::make_pair; 26 27 #include <fst/util.h> 28 #include <fst/extensions/pdt/pdtscript.h> 29 #include <fst/script/connect.h> 30 31 DEFINE_string(pdt_parentheses, "", "PDT parenthesis label pairs."); 32 DEFINE_bool(left_pdt, true, "1st arg is PDT (o.w. 2nd arg)."); 33 DEFINE_bool(connect, true, "Trim output"); 34 35 int main(int argc, char **argv) { 36 namespace s = fst::script; 37 38 string usage = "Compose a PDT and an FST.\n\n Usage: "; 39 usage += argv[0]; 40 usage += " in.pdt in.fst [out.pdt]\n"; 41 usage += " in.fst in.pdt [out.pdt]\n"; 42 43 std::set_new_handler(FailedNewHandler); 44 SetFlags(usage.c_str(), &argc, &argv, true); 45 if (argc < 3 || argc > 4) { 46 ShowUsage(); 47 return 1; 48 } 49 50 string in1_name = strcmp(argv[1], "-") == 0 ? "" : argv[1]; 51 string in2_name = strcmp(argv[2], "-") == 0 ? "" : argv[2]; 52 string out_name = argc > 3 ? argv[3] : ""; 53 54 if (in1_name.empty() && in2_name.empty()) { 55 LOG(ERROR) << argv[0] << ": Can't take both inputs from standard input."; 56 return 1; 57 } 58 59 s::FstClass *ifst1 = s::FstClass::Read(in1_name); 60 if (!ifst1) return 1; 61 s::FstClass *ifst2 = s::FstClass::Read(in2_name); 62 if (!ifst2) return 1; 63 64 if (FLAGS_pdt_parentheses.empty()) { 65 LOG(ERROR) << argv[0] << ": No PDT parenthesis label pairs provided"; 66 return 1; 67 } 68 69 vector<pair<int64, int64> > parens; 70 fst::ReadLabelPairs(FLAGS_pdt_parentheses, &parens, false); 71 72 s::VectorFstClass ofst(ifst1->ArcType()); 73 fst::ComposeOptions copts(false); 74 75 s::PdtCompose(*ifst1, *ifst2, parens, &ofst, copts, FLAGS_left_pdt); 76 77 if (FLAGS_connect) 78 s::Connect(&ofst); 79 ofst.Write(out_name); 80 81 return 0; 82 } 83
