// 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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// Definitions and functions for invoking and using Far main functions that
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// support multiple and extensible arc types.
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#include <fst/extensions/far/script-impl.h>
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#include <string>
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#include <fst/extensions/far/far.h>
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#include <fstream>
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namespace fst {
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namespace script {
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string LoadArcTypeFromFar(const string &far_fname) {
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FarHeader hdr;
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if (!hdr.Read(far_fname)) {
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LOG(ERROR) << "Error reading FAR: " << far_fname;
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return "";
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}
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string atype = hdr.ArcType();
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if (atype == "unknown") {
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LOG(ERROR) << "Empty FST archive: " << far_fname;
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return "";
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}
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return atype;
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}
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string LoadArcTypeFromFst(const string &fst_fname) {
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FstHeader hdr;
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std::ifstream in(fst_fname, std::ios_base::in | std::ios_base::binary);
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if (!hdr.Read(in, fst_fname)) {
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LOG(ERROR) << "Error reading FST: " << fst_fname;
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return "";
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}
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return hdr.ArcType();
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}
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} // namespace script
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} // namespace fst
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