FST  openfst-1.8.2.post1
OpenFst Library
script-impl.cc
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1 // Copyright 2005-2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the 'License');
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an 'AS IS' BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 //
15 // See www.openfst.org for extensive documentation on this weighted
16 // finite-state transducer library.
17 //
18 // Definitions and functions for invoking and using Far main functions that
19 // support multiple and extensible arc types.
20 
22 
23 #include <string>
24 
25 #include <fst/extensions/far/far.h>
26 #include <fstream>
27 
28 namespace fst {
29 namespace script {
30 
31 std::string LoadArcTypeFromFar(const std::string &far_source) {
32  FarHeader hdr;
33  if (!hdr.Read(far_source)) {
34  LOG(ERROR) << "Error reading FAR: " << far_source;
35  return "";
36  }
37  return hdr.ArcType();
38 }
39 
40 std::string LoadArcTypeFromFst(const std::string &fst_source) {
41  FstHeader hdr;
42  std::ifstream in(fst_source, std::ios_base::in | std::ios_base::binary);
43  if (!hdr.Read(in, fst_source)) {
44  LOG(ERROR) << "Error reading FST: " << fst_source;
45  return "";
46  }
47  return hdr.ArcType();
48 }
49 
50 } // namespace script
51 } // namespace fst
bool Read(std::istream &strm, const std::string &source, bool rewind=false)
Definition: fst.cc:50
#define LOG(type)
Definition: log.h:49
std::string LoadArcTypeFromFst(const std::string &fst_source)
Definition: script-impl.cc:40
bool Read(const std::string &source)
Definition: far.h:69
std::string LoadArcTypeFromFar(const std::string &far_source)
Definition: script-impl.cc:31
const std::string & ArcType() const
Definition: far.h:65
const std::string & ArcType() const
Definition: fst.h:144