farcreate.cc
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// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Creates a finite-state archive from input FSTs.
#include <string>
#include <vector>
#include <fst/flags.h>
#include <fst/extensions/far/farscript.h>
#include <fst/extensions/far/getters.h>
#include <fstream>
DEFINE_string(key_prefix, "", "Prefix to append to keys");
DEFINE_string(key_suffix, "", "Suffix to append to keys");
DEFINE_int32(generate_keys, 0,
"Generate N digit numeric keys (def: use file basenames)");
DEFINE_string(far_type, "default",
"FAR file format type: one of: \"default\", "
"\"stlist\", \"sttable\"");
DEFINE_bool(file_list_input, false,
"Each input file contains a list of files to be processed");
int main(int argc, char **argv) {
namespace s = fst::script;
string usage = "Creates a finite-state archive from input FSTs.\n\n Usage:";
usage += argv[0];
usage += " [in1.fst [[in2.fst ...] out.far]]\n";
std::set_new_handler(FailedNewHandler);
SET_FLAGS(usage.c_str(), &argc, &argv, true);
s::ExpandArgs(argc, argv, &argc, &argv);
std::vector<string> in_fnames;
if (FLAGS_file_list_input) {
for (int i = 1; i < argc - 1; ++i) {
std::ifstream istrm(argv[i]);
string str;
while (getline(istrm, str)) in_fnames.push_back(str);
}
} else {
for (int i = 1; i < argc - 1; ++i)
in_fnames.push_back(argv[i]);
}
if (in_fnames.empty())
in_fnames.push_back(argc == 2 && strcmp(argv[1], "-") != 0 ? argv[1] : "");
string out_fname =
argc > 2 && strcmp(argv[argc - 1], "-") != 0 ? argv[argc - 1] : "";
const auto arc_type = s::LoadArcTypeFromFst(in_fnames[0]);
if (arc_type.empty()) return 1;
const auto far_type = s::GetFarType(FLAGS_far_type);
s::FarCreate(in_fnames, out_fname, arc_type, FLAGS_generate_keys, far_type,
FLAGS_key_prefix, FLAGS_key_suffix);
return 0;
}