// See www.openfst.org for extensive documentation on this weighted
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// finite-state transducer library.
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//
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// Outputs as strings the string FSTs in a finite-state archive.
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#include <string>
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#include <vector>
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#include <fst/flags.h>
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#include <fst/extensions/far/farscript.h>
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#include <fst/extensions/far/getters.h>
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DEFINE_string(filename_prefix, "", "Prefix to append to filenames");
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DEFINE_string(filename_suffix, "", "Suffix to append to filenames");
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DEFINE_int32(generate_filenames, 0,
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"Generate N digit numeric filenames (def: use keys)");
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DEFINE_string(begin_key, "",
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"First key to extract (def: first key in archive)");
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DEFINE_string(end_key, "", "Last key to extract (def: last key in archive)");
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// PrintStringsMain specific flag definitions.
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DEFINE_bool(print_key, false, "Prefix each string by its key");
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DEFINE_bool(print_weight, false, "Suffix each string by its weight");
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DEFINE_string(entry_type, "line",
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"Entry type: one of : "
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"\"file\" (one FST per file), \"line\" (one FST per line)");
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DEFINE_string(token_type, "symbol",
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"Token type: one of : "
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"\"symbol\", \"byte\", \"utf8\"");
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DEFINE_string(symbols, "", "Label symbol table");
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DEFINE_bool(initial_symbols, true,
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"Uses symbol table from the first Fst in archive for all entries.");
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int main(int argc, char **argv) {
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namespace s = fst::script;
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string usage = "Print as string the string FSTs in an archive.\n\n Usage:";
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usage += argv[0];
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usage += " [in1.far in2.far ...]\n";
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std::set_new_handler(FailedNewHandler);
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SET_FLAGS(usage.c_str(), &argc, &argv, true);
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s::ExpandArgs(argc, argv, &argc, &argv);
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std::vector<string> in_fnames;
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for (int i = 1; i < argc; ++i) in_fnames.push_back(argv[i]);
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if (in_fnames.empty()) in_fnames.push_back("");
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const auto arc_type = s::LoadArcTypeFromFar(in_fnames[0]);
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if (arc_type.empty()) return 1;
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fst::FarEntryType entry_type;
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if (!s::GetFarEntryType(FLAGS_entry_type, &entry_type)) {
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LOG(ERROR) << "Unknown or unsupported FAR entry type: " << FLAGS_entry_type;
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return 1;
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}
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fst::FarTokenType token_type;
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if (!s::GetFarTokenType(FLAGS_token_type, &token_type)) {
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LOG(ERROR) << "Unknown or unsupported FAR token type: " << FLAGS_token_type;
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return 1;
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}
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s::FarPrintStrings(in_fnames, arc_type, entry_type, token_type,
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FLAGS_begin_key, FLAGS_end_key, FLAGS_print_key,
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FLAGS_print_weight, FLAGS_symbols, FLAGS_initial_symbols,
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FLAGS_generate_filenames, FLAGS_filename_prefix,
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FLAGS_filename_suffix);
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return 0;
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}
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