// 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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// Creates a finite-state archive from input FSTs.
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#include <string>
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#include <vector>
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#include <fst/flags.h>
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#include <fst/extensions/far/farscript.h>
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#include <fst/extensions/far/getters.h>
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#include <fstream>
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DEFINE_string(key_prefix, "", "Prefix to append to keys");
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DEFINE_string(key_suffix, "", "Suffix to append to keys");
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DEFINE_int32(generate_keys, 0,
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"Generate N digit numeric keys (def: use file basenames)");
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DEFINE_string(far_type, "default",
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"FAR file format type: one of: \"default\", "
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"\"stlist\", \"sttable\"");
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DEFINE_bool(file_list_input, false,
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"Each input file contains a list of files to be processed");
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int main(int argc, char **argv) {
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namespace s = fst::script;
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string usage = "Creates a finite-state archive from input FSTs.\n\n Usage:";
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usage += argv[0];
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usage += " [in1.fst [[in2.fst ...] out.far]]\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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s::ExpandArgs(argc, argv, &argc, &argv);
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std::vector<string> in_fnames;
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if (FLAGS_file_list_input) {
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for (int i = 1; i < argc - 1; ++i) {
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std::ifstream istrm(argv[i]);
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string str;
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while (getline(istrm, str)) in_fnames.push_back(str);
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}
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} else {
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for (int i = 1; i < argc - 1; ++i)
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in_fnames.push_back(argv[i]);
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}
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if (in_fnames.empty())
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in_fnames.push_back(argc == 2 && strcmp(argv[1], "-") != 0 ? argv[1] : "");
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string out_fname =
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argc > 2 && strcmp(argv[argc - 1], "-") != 0 ? argv[argc - 1] : "";
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const auto arc_type = s::LoadArcTypeFromFst(in_fnames[0]);
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if (arc_type.empty()) return 1;
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const auto far_type = s::GetFarType(FLAGS_far_type);
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s::FarCreate(in_fnames, out_fname, arc_type, FLAGS_generate_keys, far_type,
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FLAGS_key_prefix, FLAGS_key_suffix);
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return 0;
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}
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