1 files changed, 97 insertions, 0 deletions
diff --git a/src/bin/fstmap.cc b/src/bin/fstmap.cc
new file mode 100644
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+++ b/src/bin/fstmap.cc
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+// fstmap.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
+// Applies an operation to each arc of an FST.
+//
+
+#include <string>
+
+#include <fst/script/map.h>
+
+DEFINE_double(delta, fst::kDelta, "Comparison/quantization delta");
+DEFINE_string(map_type, "identity",
+              "Map operation, one of: \"arc_sum\", \"identity\", \"invert\", "
+              "\"plus (--weight)\", \"quantize (--delta)\", \"rmweight\", "
+              "\"superfinal\", \"times (--weight)\", \"to_log\", \"to_log64\", "
+              "\"to_standard\"");
+DEFINE_string(weight, "", "Weight parameter");
+
+int main(int argc, char **argv) {
+  namespace s = fst::script;
+  using fst::script::FstClass;
+  using fst::script::MutableFstClass;
+  using fst::script::VectorFstClass;
+
+  string usage = "Applies an operation to each arc of an FST.\n\n  Usage: ";
+  usage += argv[0];
+  usage += " [in.fst [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] : "";
+
+  FstClass *ifst = FstClass::Read(in_name);
+  if (!ifst) return 1;
+
+  s::WeightClass w = !FLAGS_weight.empty() ?
+      s::WeightClass(ifst->WeightType(), FLAGS_weight) :
+      (FLAGS_map_type == "times" ?
+       s::WeightClass::One() : s::WeightClass::Zero());
+
+  s::MapType mt;
+  if (FLAGS_map_type == "arc_sum") {
+    mt = s::ARC_SUM_MAPPER;
+  } else if (FLAGS_map_type == "identity") {
+    mt = s::IDENTITY_MAPPER;
+  } else if (FLAGS_map_type == "invert") {
+    mt = s::INVERT_MAPPER;
+  } else if (FLAGS_map_type == "plus") {
+    mt = s::PLUS_MAPPER;
+  } else if (FLAGS_map_type == "quantize") {
+    mt = s::QUANTIZE_MAPPER;
+  } else if (FLAGS_map_type == "rmweight") {
+    mt = s::RMWEIGHT_MAPPER;
+  } else if (FLAGS_map_type == "superfinal") {
+    mt = s::SUPERFINAL_MAPPER;
+  } else if (FLAGS_map_type == "times") {
+    mt = s::TIMES_MAPPER;
+  } else if (FLAGS_map_type == "to_log") {
+    mt = s::TO_LOG_MAPPER;
+  } else if (FLAGS_map_type == "to_log64") {
+    mt = s::TO_LOG64_MAPPER;
+  } else if (FLAGS_map_type == "to_standard") {
+    mt = s::TO_STD_MAPPER;
+  } else {
+    LOG(ERROR) << argv[0] << ": Unknown map type \""
+               << FLAGS_map_type << "\"\n";
+    return 1;
+  }
+
+  FstClass *ofst = s::Map(*ifst, mt, FLAGS_delta, w);
+
+  ofst->Write(out_name);
+
+  return 0;
+}