1// fstequal.cc
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// Copyright 2005-2010 Google, Inc.
16// Author: riley@google.com (Michael Riley)
17// Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass
18//
19// \file
20// Two FSTS are equal iff they their exit status is zero.
21//
22
23#include <fst/script/equal.h>
24
25DEFINE_double(delta, fst::kDelta, "Comparison/quantization delta");
26
27int main(int argc, char **argv) {
28  namespace s = fst::script;
29  using fst::script::FstClass;
30
31  string usage = "Two FSTs are equal iff the exit status is zero.\n\n  Usage: ";
32  usage += argv[0];
33  usage += " in1.fst in2.fst\n";
34
35  std::set_new_handler(FailedNewHandler);
36  SET_FLAGS(usage.c_str(), &argc, &argv, true);
37  if (argc != 3) {
38    ShowUsage();
39    return 1;
40  }
41
42  string in1_name = strcmp(argv[1], "-") == 0 ? "" : argv[1];
43  string in2_name = strcmp(argv[2], "-") == 0 ? "" : argv[2];
44
45  if (in1_name.empty() && in2_name.empty()) {
46    LOG(ERROR) << argv[0] << ": Can't take both inputs from standard input.";
47    return 1;
48  }
49
50  FstClass *ifst1 = FstClass::Read(in1_name);
51  if (!ifst1) return 1;
52
53  FstClass *ifst2 = FstClass::Read(in2_name);
54  if (!ifst2) return 1;
55
56  bool result = s::Equal(*ifst1, *ifst2, FLAGS_delta);
57  if (!result)
58    VLOG(1) << "FSTs are not equal.";
59
60  return result ? 0 : 2;
61}
62