| |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| // Copyright 2005-2010 Google, Inc. |
| // Author: johans@google.com (Johan Schalkwyk) |
| // Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass |
| // |
| |
| #include <fst/script/replace.h> |
| |
| DEFINE_bool(epsilon_on_replace, false, "Create an espilon arc when recursing"); |
| |
| int main(int argc, char **argv) { |
| namespace s = fst::script; |
| using fst::script::FstClass; |
| using fst::script::VectorFstClass; |
| |
| string usage = "Recursively replaces FST arcs with other FST(s).\n\n" |
| " Usage: "; |
| usage += argv[0]; |
| usage += " root.fst rootlabel [rule1.fst label1 ...] [out.fst]\n"; |
| |
| std::set_new_handler(FailedNewHandler); |
| SET_FLAGS(usage.c_str(), &argc, &argv, true); |
| if (argc < 4) { |
| ShowUsage(); |
| return 1; |
| } |
| |
| string in_fname = argv[1]; |
| string out_fname = argc % 2 == 0 ? argv[argc - 1] : ""; |
| |
| FstClass *ifst = FstClass::Read(in_fname); |
| if (!ifst) return 1; |
| |
| typedef int64 Label; |
| typedef pair<Label, const s::FstClass* > FstTuple; |
| vector<FstTuple> fst_tuples; |
| Label root = atoll(argv[2]); |
| fst_tuples.push_back(make_pair(root, ifst)); |
| |
| for (size_t i = 3; i < argc - 1; i += 2) { |
| ifst = s::FstClass::Read(argv[i]); |
| if (!ifst) return 1; |
| Label lab = atoll(argv[i + 1]); |
| fst_tuples.push_back(make_pair(lab, ifst)); |
| } |
| |
| VectorFstClass ofst(ifst->ArcType()); |
| Replace(fst_tuples, &ofst, root, FLAGS_epsilon_on_replace); |
| |
| ofst.Write(out_fname); |
| |
| return 0; |
| } |