diff options
Diffstat (limited to 'src/extensions/pdt/pdtreverse.cc')
-rw-r--r-- | src/extensions/pdt/pdtreverse.cc | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/extensions/pdt/pdtreverse.cc b/src/extensions/pdt/pdtreverse.cc new file mode 100644 index 0000000..e79cd7f --- /dev/null +++ b/src/extensions/pdt/pdtreverse.cc @@ -0,0 +1,61 @@ +// pdtreverse.cc + +// 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: riley@google.com (Michael Riley) +// +// \file +// Reverse a PDT. +// + +#include <fst/extensions/pdt/pdtscript.h> +#include <fst/util.h> + +DEFINE_string(pdt_parentheses, "", "PDT parenthesis label pairs."); + +int main(int argc, char **argv) { + namespace s = fst::script; + + string usage = "Reverse a PDT.\n\n Usage: "; + usage += argv[0]; + usage += " in.pdt [out.fst]\n"; + + std::set_new_handler(FailedNewHandler); + SetFlags(usage.c_str(), &argc, &argv, true); + if (argc > 3) { + ShowUsage(); + return 1; + } + + string in_name = (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : ""; + string out_name = argc > 2 ? argv[2] : ""; + + s::FstClass *ifst = s::FstClass::Read(in_name); + if (!ifst) return 1; + + if (FLAGS_pdt_parentheses.empty()) { + LOG(ERROR) << argv[0] << ": No PDT parenthesis label pairs provided"; + return 1; + } + + vector<pair<int64, int64> > parens, rparens; + fst::ReadLabelPairs(FLAGS_pdt_parentheses, &parens, false); + + s::VectorFstClass ofst(ifst->ArcType()); + s::PdtReverse(*ifst, parens, &ofst); + + ofst.Write(out_name); + + return 0; +} |