// 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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// Draws a binary FSTs in the Graphviz dot text format.
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#include <cstring>
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#include <fstream>
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#include <memory>
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#include <ostream>
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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/script/draw.h>
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DECLARE_bool(acceptor);
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DECLARE_string(isymbols);
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DECLARE_string(osymbols);
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DECLARE_string(ssymbols);
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DECLARE_bool(numeric);
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DECLARE_int32(precision);
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DECLARE_string(float_format);
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DECLARE_bool(show_weight_one);
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DECLARE_string(title);
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DECLARE_bool(portrait);
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DECLARE_bool(vertical);
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DECLARE_int32(fontsize);
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DECLARE_double(height);
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DECLARE_double(width);
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DECLARE_double(nodesep);
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DECLARE_double(ranksep);
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DECLARE_bool(allow_negative_labels);
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int fstdraw_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::SymbolTable;
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using fst::SymbolTableTextOptions;
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string usage = "Prints out binary FSTs in dot text format.\n\n Usage: ";
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usage += argv[0];
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usage += " [binary.fst [text.dot]]\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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const string in_name = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : "";
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std::unique_ptr<FstClass> fst(FstClass::Read(in_name));
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if (!fst) return 1;
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string dest = "stdout";
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std::ofstream fstrm;
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if (argc == 3) {
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fstrm.open(argv[2]);
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if (!fstrm) {
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LOG(ERROR) << argv[0] << ": Open failed, file = " << argv[2];
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return 1;
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}
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dest = argv[2];
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}
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std::ostream &ostrm = fstrm.is_open() ? fstrm : std::cout;
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const SymbolTableTextOptions opts(FLAGS_allow_negative_labels);
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std::unique_ptr<const SymbolTable> isyms;
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if (!FLAGS_isymbols.empty() && !FLAGS_numeric) {
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isyms.reset(SymbolTable::ReadText(FLAGS_isymbols, opts));
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if (!isyms) return 1;
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}
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std::unique_ptr<const SymbolTable> osyms;
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if (!FLAGS_osymbols.empty() && !FLAGS_numeric) {
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osyms.reset(SymbolTable::ReadText(FLAGS_osymbols, opts));
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if (!osyms) return 1;
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}
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std::unique_ptr<const SymbolTable> ssyms;
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if (!FLAGS_ssymbols.empty() && !FLAGS_numeric) {
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ssyms.reset(SymbolTable::ReadText(FLAGS_ssymbols));
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if (!ssyms) return 1;
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}
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if (!isyms && !FLAGS_numeric && fst->InputSymbols()) {
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isyms.reset(fst->InputSymbols()->Copy());
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}
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if (!osyms && !FLAGS_numeric && fst->OutputSymbols()) {
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osyms.reset(fst->OutputSymbols()->Copy());
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}
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s::DrawFst(*fst, isyms.get(), osyms.get(), ssyms.get(), FLAGS_acceptor,
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FLAGS_title, FLAGS_width, FLAGS_height, FLAGS_portrait,
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FLAGS_vertical, FLAGS_ranksep, FLAGS_nodesep, FLAGS_fontsize,
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FLAGS_precision, FLAGS_float_format, FLAGS_show_weight_one,
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&ostrm, dest);
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return 0;
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}
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