pdtinfo.cc
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// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Prints out various information about a PDT such as number of states, arcs,
// and parentheses.
#include <cstring>
#include <memory>
#include <string>
#include <vector>
#include <fst/flags.h>
#include <fst/log.h>
#include <fst/extensions/pdt/pdtscript.h>
#include <fst/util.h>
DEFINE_string(pdt_parentheses, "", "PDT parenthesis label pairs");
int main(int argc, char **argv) {
namespace s = fst::script;
using fst::ReadLabelPairs;
using fst::script::FstClass;
string usage = "Prints out information about a PDT.\n\n Usage: ";
usage += argv[0];
usage += " in.pdt\n";
std::set_new_handler(FailedNewHandler);
SET_FLAGS(usage.c_str(), &argc, &argv, true);
if (argc > 2) {
ShowUsage();
return 1;
}
const string in_name =
(argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : "";
std::unique_ptr<FstClass> ifst(FstClass::Read(in_name));
if (!ifst) return 1;
if (FLAGS_pdt_parentheses.empty()) {
LOG(ERROR) << argv[0] << ": No PDT parenthesis label pairs provided";
return 1;
}
std::vector<s::LabelPair> parens;
if (!ReadLabelPairs(FLAGS_pdt_parentheses, &parens, false)) return 1;
s::PrintPdtInfo(*ifst, parens);
return 0;
}