// See www.openfst.org for extensive documentation on this weighted
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// finite-state transducer library.
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#ifndef FST_SCRIPT_PRINT_H_
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#define FST_SCRIPT_PRINT_H_
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#include <ostream>
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#include <fst/flags.h>
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#include <fst/script/fst-class.h>
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#include <fst/script/print-impl.h>
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DECLARE_string(fst_field_separator);
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namespace fst {
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namespace script {
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// Note: it is safe to pass these strings as references because
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// this struct is only used to pass them deeper in the call graph.
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// Be sure you understand why this is so before using this struct
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// for anything else!
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struct FstPrinterArgs {
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const FstClass &fst;
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const SymbolTable *isyms;
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const SymbolTable *osyms;
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const SymbolTable *ssyms;
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const bool accept;
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const bool show_weight_one;
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std::ostream *ostrm;
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const string &dest;
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const string &sep; // NOLINT
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const string &missing_symbol;
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FstPrinterArgs(const FstClass &fst, const SymbolTable *isyms,
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const SymbolTable *osyms, const SymbolTable *ssyms,
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bool accept, bool show_weight_one, std::ostream *ostrm,
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const string &dest, const string &sep,
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const string &missing_sym = "")
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: fst(fst),
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isyms(isyms),
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osyms(osyms),
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ssyms(ssyms),
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accept(accept),
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show_weight_one(show_weight_one),
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ostrm(ostrm),
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dest(dest),
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sep(sep),
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missing_symbol(missing_sym) {}
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};
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template <class Arc>
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void PrintFst(FstPrinterArgs *args) {
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const Fst<Arc> &fst = *(args->fst.GetFst<Arc>());
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FstPrinter<Arc> fstprinter(fst, args->isyms, args->osyms, args->ssyms,
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args->accept, args->show_weight_one, args->sep,
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args->missing_symbol);
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fstprinter.Print(args->ostrm, args->dest);
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}
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void PrintFst(const FstClass &fst, std::ostream &ostrm, const string &dest,
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const SymbolTable *isyms, const SymbolTable *osyms,
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const SymbolTable *ssyms, bool accept, bool show_weight_one,
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const string &missing_sym = "");
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// The same, but with more sensible defaults.
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template <class Arc>
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void PrintFst(const Fst<Arc> &fst, std::ostream &ostrm, const string &dest = "",
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const SymbolTable *isyms = nullptr,
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const SymbolTable *osyms = nullptr,
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const SymbolTable *ssyms = nullptr) {
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const string sep = FLAGS_fst_field_separator.substr(0, 1);
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FstPrinter<Arc> fstprinter(fst, isyms, osyms, ssyms, true, true, sep);
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fstprinter.Print(&ostrm, dest);
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}
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} // namespace script
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} // namespace fst
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#endif // FST_SCRIPT_PRINT_H_
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