// 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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// Compresses/decompresses an FST.
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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/log.h>
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#include <fst/extensions/compress/compress-script.h>
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#include <fst/script/arg-packs.h>
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#include <fst/script/fst-class.h>
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DEFINE_string(arc_type, "standard", "Output arc type");
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DEFINE_bool(decode, false, "Decode");
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DEFINE_bool(gzip, false,
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"Applies gzip compression after LZA compression and "
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"gzip decompression before LZA decompression "
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"(recommended)"
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"");
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int main(int argc, char **argv) {
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namespace s = fst::script;
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using s::FstClass;
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using s::VectorFstClass;
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string usage = "Compresses/decompresses an FST.\n\n Usage: ";
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usage += argv[0];
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usage += " [in.fst [out.fstz]]\n";
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usage += " --decode [in.fstz [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) {
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ShowUsage();
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return 1;
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}
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string in_name = (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : "";
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string out_name = argc > 2 ? argv[2] : "";
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if (FLAGS_decode == false) {
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std::unique_ptr<FstClass> ifst(FstClass::Read(in_name));
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if (!ifst) return 1;
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s::Compress(*ifst, out_name, FLAGS_gzip);
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} else {
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VectorFstClass ofst(FLAGS_arc_type);
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s::Decompress(in_name, &ofst, FLAGS_gzip);
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ofst.Write(out_name);
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}
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return 0;
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}
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