fstunion-main.cc
1.25 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Creates the union of two FSTs.
#include <cstring>
#include <memory>
#include <string>
#include <fst/flags.h>
#include <fst/log.h>
#include <fst/script/union.h>
int fstunion_main(int argc, char **argv) {
namespace s = fst::script;
using fst::script::FstClass;
using fst::script::MutableFstClass;
string usage = "Creates the union of two FSTs.\n\n Usage: ";
usage += argv[0];
usage += " in1.fst in2.fst [out.fst]\n";
std::set_new_handler(FailedNewHandler);
SET_FLAGS(usage.c_str(), &argc, &argv, true);
if (argc < 3 || argc > 4) {
ShowUsage();
return 1;
}
const string in1_name = strcmp(argv[1], "-") != 0 ? argv[1] : "";
const string in2_name = strcmp(argv[2], "-") != 0 ? argv[2] : "";
const string out_name = argc > 3 ? argv[3] : "";
if (in1_name == "" && in2_name == "") {
LOG(ERROR) << argv[0] << ": Can't take both inputs from standard input";
return 1;
}
std::unique_ptr<MutableFstClass> fst1(MutableFstClass::Read(in1_name, true));
if (!fst1) return 1;
std::unique_ptr<FstClass> fst2(FstClass::Read(in2_name));
if (!fst2) return 1;
s::Union(fst1.get(), *fst2);
return !fst1->Write(out_name);
}