1 // fstunion.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 // Creates the union of two FSTs.
21 //
22
23 #include <string>
24
25 #include <fst/script/union.h>
26 #include <iostream>
27 #include <fstream>
28 #include <sstream>
29
main(int argc,char ** argv)30 int main(int argc, char **argv) {
31 using fst::script::FstClass;
32 using fst::script::MutableFstClass;
33 using fst::script::Union;
34
35 string usage = "Creates the union of two FSTs.\n\n Usage: ";
36 usage += argv[0];
37 usage += " in1.fst in2.fst [out.fst]\n";
38
39 std::set_new_handler(FailedNewHandler);
40 SET_FLAGS(usage.c_str(), &argc, &argv, true);
41 if (argc < 3 || argc > 4) {
42 ShowUsage();
43 return 1;
44 }
45
46 string in1_name = strcmp(argv[1], "-") != 0 ? argv[1] : "";
47 string in2_name = strcmp(argv[2], "-") != 0 ? argv[2] : "";
48 string out_name = argc > 3 ? argv[3] : "";
49
50 if (in1_name == "" && in2_name == "") {
51 LOG(ERROR) << argv[0]
52 << ": Can't use standard i/o for both inputs.";
53 return 1;
54 }
55
56 MutableFstClass *fst1 = MutableFstClass::Read(in1_name, true);
57 if (!fst1) return 1;
58
59 FstClass *fst2 = FstClass::Read(in2_name);
60 if (!fst2) {
61 return 1;
62 }
63
64 Union(fst1, *fst2);
65 fst1->Write(out_name);
66
67 return 0;
68 }
69