1 // fstconcat.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 // Concatenates two FSTs.
21 //
22
23 #include <string>
24
25 #include <fst/script/concat.h>
26
main(int argc,char ** argv)27 int main(int argc, char **argv) {
28 namespace s = fst::script;
29 using fst::script::FstClass;
30 using fst::script::MutableFstClass;
31
32 string usage = "Concatenates two FSTs.\n\n Usage: ";
33 usage += argv[0];
34 usage += " in1.fst in2.fst [out.fst]\n";
35
36 std::set_new_handler(FailedNewHandler);
37 SetFlags(usage.c_str(), &argc, &argv, true);
38 if (argc < 3 || argc > 4) {
39 ShowUsage();
40 return 1;
41 }
42
43 string in1_name = strcmp(argv[1], "-") == 0 ? "" : argv[1];
44 string in2_name = strcmp(argv[2], "-") == 0 ? "" : argv[2];
45 string out_fname = argc > 3 ? argv[3] : "";
46
47 if (in1_name.empty() && in2_name.empty()) {
48 LOG(ERROR) << argv[0] << ": Can't take both inputs from standard input.";
49 return 1;
50 }
51
52 MutableFstClass *fst1 = MutableFstClass::Read(in1_name, true);
53 if (!fst1) return 1;
54
55 FstClass *fst2 = FstClass::Read(in2_name);
56 if (!fst2) return 1;
57
58 s::Concat(fst1, *fst2);
59 fst1->Write(out_fname);
60
61 return 0;
62 }
63