// 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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// Encode transducer labels and/or weights.
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#include <cstring>
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#include <memory>
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#include <string>
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#include <fst/flags.h>
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#include <fst/script/decode.h>
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#include <fst/script/encode.h>
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#include <fst/script/getters.h>
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DECLARE_bool(encode_labels);
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DECLARE_bool(encode_weights);
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DECLARE_bool(encode_reuse);
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DECLARE_bool(decode);
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int fstencode_main(int argc, char **argv) {
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namespace s = fst::script;
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using fst::script::FstClass;
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using fst::script::MutableFstClass;
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string usage = "Encodes transducer labels and/or weights.\n\n Usage: ";
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usage += argv[0];
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usage += " in.fst codex [out.fst]\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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if (argc < 3 || argc > 4) {
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ShowUsage();
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return 1;
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}
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const string in_name = (strcmp(argv[1], "-") != 0) ? argv[1] : "";
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const string codex_name = argv[2];
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const string out_name = argc > 3 ? argv[3] : "";
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std::unique_ptr<MutableFstClass> fst(MutableFstClass::Read(in_name, true));
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if (!fst) return 1;
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if (FLAGS_decode) {
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s::Decode(fst.get(), codex_name);
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return !fst->Write(out_name);
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} else {
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const auto flags =
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s::GetEncodeFlags(FLAGS_encode_labels, FLAGS_encode_weights);
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s::Encode(fst.get(), flags, FLAGS_encode_reuse, codex_name);
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return !fst->Write(out_name);
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}
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}
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