1 files changed, 58 insertions, 0 deletions
diff --git a/src/bin/fstproject.cc b/src/bin/fstproject.cc
new file mode 100644
index 0000000..a67f431
--- /dev/null
+++ b/src/bin/fstproject.cc
@@ -0,0 +1,58 @@
+// fstproject.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 work with FstClass
+//
+// \file
+// Projects a transduction onto its input or output language.
+//
+
+#include <fst/script/project.h>
+
+DEFINE_bool(project_output, false, "Project on output (vs. input)");
+
+int main(int argc, char **argv) {
+  namespace s = fst::script;
+  using fst::script::FstClass;
+  using fst::script::MutableFstClass;
+
+  string usage = "Projects a transduction onto its input"
+      " or output language.\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] : "";
+
+  MutableFstClass *fst = MutableFstClass::Read(in_name, true);
+  if (!fst) return 1;
+
+  fst::ProjectType project_type = FLAGS_project_output ?
+      fst::PROJECT_OUTPUT : fst::PROJECT_INPUT;
+
+  s::Project(fst, project_type);
+
+  fst->Write(out_name);
+
+  return 0;
+}