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tools/openfst-1.6.7/src/bin/fstprint-main.cc
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// See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
//
// Prints out binary FSTs in simple text format used by AT&T.
#include <cstring>
#include <fstream>
#include <memory>
#include <ostream>
#include <string>
#include <fst/flags.h>
#include <fst/log.h>
#include <fst/script/print.h>
DECLARE_bool(acceptor);
DECLARE_string(isymbols);
DECLARE_string(osymbols);
DECLARE_string(ssymbols);
DECLARE_bool(numeric);
DECLARE_string(save_isymbols);
DECLARE_string(save_osymbols);
DECLARE_bool(show_weight_one);
DECLARE_bool(allow_negative_labels);
DECLARE_string(missing_symbol);
int fstprint_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 simple text format.
Usage: ";
usage += argv[0];
usage += " [binary.fst [text.fst]]
";
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] : "";
const string out_name = argc > 2 ? argv[2] : "";
std::unique_ptr<FstClass> fst(FstClass::Read(in_name));
if (!fst) return 1;
string dest = "standard output";
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;
ostrm.precision(9);
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::PrintFst(*fst, ostrm, dest, isyms.get(), osyms.get(), ssyms.get(),
FLAGS_acceptor, FLAGS_show_weight_one, FLAGS_missing_symbol);
if (isyms && !FLAGS_save_isymbols.empty()) {
if (!isyms->WriteText(FLAGS_save_isymbols)) return 1;
}
if (osyms && !FLAGS_save_osymbols.empty()) {
if (!osyms->WriteText(FLAGS_save_osymbols)) return 1;
}
return 0;
}
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