46 std::string usage =
"Expand a (bounded-stack) PDT as an FST.\n\n Usage: ";
48 usage +=
" in.pdt [out.fst]\n";
50 SET_FLAGS(usage.c_str(), &argc, &argv,
true);
56 const std::string in_name =
57 (argc > 1 && (strcmp(argv[1],
"-") != 0)) ? argv[1] :
"";
58 const std::string out_name =
59 (argc > 2 && (strcmp(argv[2],
"-") != 0)) ? argv[2] :
"";
61 std::unique_ptr<FstClass> ifst(FstClass::Read(in_name));
64 if (FST_FLAGS_pdt_parentheses.empty()) {
65 LOG(ERROR) << argv[0] <<
": No PDT parenthesis label pairs provided";
69 std::vector<std::pair<int64_t, int64_t>> parens;
72 const auto weight_threshold =
73 FST_FLAGS_weight.empty()
74 ? WeightClass::Zero(ifst->WeightType())
75 : WeightClass(ifst->WeightType(), FST_FLAGS_weight);
77 VectorFstClass ofst(ifst->ArcType());
79 s::PdtExpandOptions(FST_FLAGS_connect,
80 FST_FLAGS_keep_parentheses,
83 return !ofst.Write(out_name);
void ShowUsage(bool long_usage=true)
int pdtexpand_main(int argc, char **argv)
#define SET_FLAGS(usage, argc, argv, rmflags)
void Expand(const FstClass &ifst, const std::vector< std::pair< int64_t, int64_t >> &parens, const std::vector< int64_t > &assignments, MutableFstClass *ofst, const MPdtExpandOptions &opts)
bool ReadLabelPairs(std::string_view source, std::vector< std::pair< Label, Label >> *pairs)
DECLARE_string(pdt_parentheses)