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Diffstat (limited to 'src/bin/fstcompose.cc')
-rw-r--r-- | src/bin/fstcompose.cc | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/bin/fstcompose.cc b/src/bin/fstcompose.cc new file mode 100644 index 0000000..0ba8c47 --- /dev/null +++ b/src/bin/fstcompose.cc @@ -0,0 +1,95 @@ +// fstcompose.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) +// Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass +// +// \file +// Composes two FSTs. +// + +#include <fst/script/compose.h> +#include <fst/script/connect.h> + + +DEFINE_string(compose_filter, "auto", + "Composition filter, one of: \"alt_sequence\", \"auto\", " + "\"match\", \"sequence\""); +DEFINE_bool(connect, true, "Trim output"); + + +int main(int argc, char **argv) { + namespace s = fst::script; + using fst::script::FstClass; + using fst::script::MutableFstClass; + using fst::script::VectorFstClass; + + string usage = "Composes two FSTs.\n\n Usage: "; + usage += argv[0]; + usage += " in1.fst in2.fst [out.fst]\n"; + + std::set_new_handler(FailedNewHandler); + SetFlags(usage.c_str(), &argc, &argv, true); + if (argc < 3 || argc > 4) { + ShowUsage(); + return 1; + } + + string in1_name = strcmp(argv[1], "-") != 0 ? argv[1] : ""; + string in2_name = (argc > 2 && (strcmp(argv[2], "-") != 0)) ? argv[2] : ""; + string out_name = argc > 3 ? argv[3] : ""; + + if (in1_name.empty() && in2_name.empty()) { + LOG(ERROR) << argv[0] << ": Can't take both inputs from standard input."; + return 1; + } + + FstClass *ifst1 = FstClass::Read(in1_name); + if (!ifst1) return 1; + + FstClass *ifst2 = FstClass::Read(in2_name); + if (!ifst2) return 1; + + if (ifst1->ArcType() != ifst2->ArcType()) { + LOG(ERROR) << argv[0] << ": Input FSTs must have the same arc type."; + return 1; + } + + VectorFstClass ofst(ifst1->ArcType()); + + fst::ComposeFilter compose_filter; + + if (FLAGS_compose_filter == "alt_sequence") { + compose_filter = fst::ALT_SEQUENCE_FILTER; + } else if (FLAGS_compose_filter == "auto") { + compose_filter = fst::AUTO_FILTER; + } else if (FLAGS_compose_filter == "match") { + compose_filter = fst::MATCH_FILTER; + } else if (FLAGS_compose_filter == "sequence") { + compose_filter = fst::SEQUENCE_FILTER; + } else { + LOG(ERROR) << argv[0] << "Unknown compose filter type: " + << FLAGS_compose_filter; + return 1; + } + + fst::ComposeOptions opts(FLAGS_connect, compose_filter); + + s::Compose(*ifst1, *ifst2, &ofst, opts); + + ofst.Write(out_name); + + return 0; +} |