farinfo.cc
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// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Prints some basic information about the FSTs in an FST archive.
#include <string>
#include <vector>
#include <fst/flags.h>
#include <fst/extensions/far/farscript.h>
#include <fst/extensions/far/getters.h>
DEFINE_string(begin_key, "",
"First key to extract (default: first key in archive)");
DEFINE_string(end_key, "",
"Last key to extract (default: last key in archive)");
DEFINE_bool(list_fsts, false, "Display FST information for each key");
int main(int argc, char **argv) {
namespace s = fst::script;
string usage = "Prints some basic information about the FSTs in an FST ";
usage += "archive.\n\n Usage:";
usage += argv[0];
usage += " [in1.far in2.far...]\n";
usage += " Flags: begin_key end_key list_fsts";
std::set_new_handler(FailedNewHandler);
SET_FLAGS(usage.c_str(), &argc, &argv, true);
s::ExpandArgs(argc, argv, &argc, &argv);
std::vector<string> in_fnames;
for (int i = 1; i < argc; ++i) in_fnames.push_back(argv[i]);
if (in_fnames.empty()) in_fnames.push_back("");
const auto arc_type = s::LoadArcTypeFromFar(in_fnames[0]);
if (arc_type.empty()) return 1;
s::FarInfo(in_fnames, arc_type, FLAGS_begin_key, FLAGS_end_key,
FLAGS_list_fsts);
return 0;
}