FST  openfst-1.8.3
OpenFst Library
pdtinfo-main.cc
Go to the documentation of this file.
1 // Copyright 2005-2024 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 // Prints out various information about a PDT such as number of states, arcs,
19 // and parentheses.
20 
21 #include <cstdint>
22 #include <cstring>
23 #include <memory>
24 #include <string>
25 #include <utility>
26 #include <vector>
27 
28 #include <fst/flags.h>
29 #include <fst/log.h>
31 #include <fst/util.h>
32 #include <fst/script/arg-packs.h>
33 #include <fst/script/fst-class.h>
34 
35 DECLARE_string(pdt_parentheses);
36 
37 int pdtinfo_main(int argc, char **argv) {
38  namespace s = fst::script;
39  using fst::ReadLabelPairs;
41 
42  std::string usage = "Prints out information about a PDT.\n\n Usage: ";
43  usage += argv[0];
44  usage += " in.pdt\n";
45 
46  SET_FLAGS(usage.c_str(), &argc, &argv, true);
47  if (argc > 2) {
48  ShowUsage();
49  return 1;
50  }
51 
52  const std::string in_name =
53  (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : "";
54 
55  std::unique_ptr<FstClass> ifst(FstClass::Read(in_name));
56  if (!ifst) return 1;
57 
58  if (FST_FLAGS_pdt_parentheses.empty()) {
59  LOG(ERROR) << argv[0] << ": No PDT parenthesis label pairs provided";
60  return 1;
61  }
62 
63  std::vector<std::pair<int64_t, int64_t>> parens;
64  if (!ReadLabelPairs(FST_FLAGS_pdt_parentheses, &parens)) return 1;
65 
66  s::Info(*ifst, parens);
67 
68  return 0;
69 }
void ShowUsage(bool long_usage=true)
Definition: flags.cc:138
DECLARE_string(pdt_parentheses)
#define LOG(type)
Definition: log.h:53
#define SET_FLAGS(usage, argc, argv, rmflags)
Definition: flags.h:226
void Info(const std::vector< std::string > &sources, const std::string &arc_type, const std::string &begin_key, const std::string &end_key, bool list_fsts)
Definition: farscript.cc:145
bool ReadLabelPairs(std::string_view source, std::vector< std::pair< Label, Label >> *pairs)
Definition: util.h:422
int pdtinfo_main(int argc, char **argv)
Definition: pdtinfo-main.cc:37