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