1 files changed, 87 insertions, 0 deletions
diff --git a/kaldi_io/src/tools/openfst/include/fst/extensions/far/create.h b/kaldi_io/src/tools/openfst/include/fst/extensions/far/create.h
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+++ b/kaldi_io/src/tools/openfst/include/fst/extensions/far/create.h
@@ -0,0 +1,87 @@
+// create-main.h
+
+// 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 new dispatch
+//
+// \file
+// Creates a finite-state archive from component FSTs.  Includes
+// helper function for farcreate.cc that templates the main on the arc
+// type to support multiple and extensible arc types.
+//
+
+#ifndef FST_EXTENSIONS_FAR_CREATE_H__
+#define FST_EXTENSIONS_FAR_CREATE_H__
+
+#include <libgen.h>
+#include <string>
+#include <vector>
+using std::vector;
+
+#include <fst/extensions/far/far.h>
+
+namespace fst {
+
+template <class Arc>
+void FarCreate(const vector<string> &in_fnames,
+               const string &out_fname,
+               const int32 generate_keys,
+               const bool file_list_input,
+               const FarType &far_type,
+               const string &key_prefix,
+               const string &key_suffix) {
+  FarWriter<Arc> *far_writer =
+      FarWriter<Arc>::Create(out_fname, far_type);
+  if (!far_writer) return;
+
+  vector<string> inputs;
+  if (file_list_input) {
+    for (int i = 1; i < in_fnames.size(); ++i) {
+      ifstream istrm(in_fnames[i].c_str());
+      string str;
+      while (getline(istrm, str))
+        inputs.push_back(str);
+    }
+  } else {
+    inputs = in_fnames;
+  }
+
+  for (int i = 0; i < inputs.size(); ++i) {
+    Fst<Arc> *ifst = Fst<Arc>::Read(inputs[i]);
+    if (!ifst) return;
+    string key;
+    if (generate_keys > 0) {
+      ostringstream keybuf;
+      keybuf.width(generate_keys);
+      keybuf.fill('0');
+      keybuf << i + 1;
+      key = keybuf.str();
+    } else {
+      char* filename = new char[inputs[i].size() + 1];
+      strcpy(filename, inputs[i].c_str());
+      key = basename(filename);
+      delete[] filename;
+    }
+
+    far_writer->Add(key_prefix + key + key_suffix, *ifst);
+    delete ifst;
+  }
+
+  delete far_writer;
+}
+
+}  // namespace fst
+
+#endif  // FST_EXTENSIONS_FAR_CREATE_H__