Add openfst to external, as used by GoogleTTSandroid-sdk-support_r11android-cts-4.2_r2android-cts-4.2_r1android-cts-4.1_r4android-cts-4.1_r2android-cts-4.1_r1android-4.2_r1android-4.2.2_r1.2android-4.2.2_r1.1android-4.2.2_r1android-4.2.1_r1.2android-4.2.1_r1.1android-4.2.1_r1android-4.1.2_r2.1android-4.1.2_r2android-4.1.2_r1android-4.1.1_r6.1android-4.1.1_r6android-4.1.1_r5android-4.1.1_r4android-4.1.1_r3android-4.1.1_r2android-4.1.1_r1.1android-4.1.1_r1tools_r22tools_r21jb-releasejb-mr1.1-releasejb-mr1.1-dev-plus-aospjb-mr1.1-devjb-mr1-releasejb-mr1-dev-plus-aospjb-mr1-devjb-mr0-releasejb-dev

Moved from GoogleTTS

Change-Id: I6bc6bdadaa53bd0f810b88443339f6d899502cc8

1 files changed, 81 insertions, 0 deletions

diff --git a/src/extensions/pdt/pdtshortestpath.cc b/src/extensions/pdt/pdtshortestpath.cc
new file mode 100644
index 0000000..ad67969
--- /dev/null
+++ b/src/extensions/pdt/pdtshortestpath.cc
@@ -0,0 +1,81 @@
+// pdtshortestpath.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
+// Return the shortest path in a PDT.
+//
+
+#include <fst/extensions/pdt/pdtscript.h>
+#include <fst/util.h>
+
+
+DEFINE_bool(keep_parentheses, false, "Keep PDT parentheses in result.");
+DEFINE_string(queue_type, "fifo", "Queue type: one of: "
+              "\"fifo\", \"lifo\", \"state\"");
+DEFINE_bool(path_gc, true, "Garbage collect shortest path data");
+DEFINE_string(pdt_parentheses, "", "PDT parenthesis label pairs.");
+
+int main(int argc, char **argv) {
+  namespace s = fst::script;
+
+  string usage = "Shortest path in 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());
+
+  fst::QueueType qt;
+
+  if (FLAGS_queue_type == "fifo") {
+    qt = fst::FIFO_QUEUE;
+  } else if (FLAGS_queue_type == "lifo") {
+    qt = fst::LIFO_QUEUE;
+  } else if (FLAGS_queue_type == "state") {
+    qt = fst::STATE_ORDER_QUEUE;
+  } else {
+    LOG(ERROR) << "Unknown or unsupported queue type: " << FLAGS_queue_type;
+    return 1;
+  }
+
+  s::PdtShortestPathOptions opts(qt, FLAGS_keep_parentheses, FLAGS_path_gc);
+  s::PdtShortestPath(*ifst, parens, &ofst, opts);
+  ofst.Write(out_name);
+
+  return 0;
+}