first commit for takway.ai

runtime/onnxruntime/third_party/openfst/src/bin/fstsymbols-main.cc

@@ -0,0 +1,111 @@
+// See www.openfst.org for extensive documentation on this weighted
+// finite-state transducer library.
+//
+// Performs operations (set, clear, relabel) on the symbols table attached to an
+// input FST.
+
+#include <cstring>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <fst/flags.h>
+#include <fst/util.h>
+#include <fst/script/fst-class.h>
+#include <fst/script/verify.h>
+
+DECLARE_string(isymbols);
+DECLARE_string(osymbols);
+DECLARE_bool(clear_isymbols);
+DECLARE_bool(clear_osymbols);
+DECLARE_string(relabel_ipairs);
+DECLARE_string(relabel_opairs);
+DECLARE_string(save_isymbols);
+DECLARE_string(save_osymbols);
+DECLARE_bool(allow_negative_labels);
+DECLARE_bool(verify);
+
+int fstsymbols_main(int argc, char **argv) {
+  namespace s = fst::script;
+  using fst::script::MutableFstClass;
+  using fst::ReadLabelPairs;
+  using fst::SymbolTable;
+  using fst::SymbolTableTextOptions;
+
+  string usage =
+      "Performs operations (set, clear, relabel) on the symbol"
+      " tables attached to an FST.\n\n  Usage: ";
+  usage += argv[0];
+  usage += " [in.fst [out.fst]]\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] : "";
+  const string out_name = argc > 2 ? argv[2] : "";
+
+  std::unique_ptr<MutableFstClass> fst(MutableFstClass::Read(in_name, true));
+  if (!fst) return 1;
+
+  if (!FLAGS_save_isymbols.empty()) {
+    const auto *isyms = fst->InputSymbols();
+    if (isyms) {
+      isyms->WriteText(FLAGS_save_isymbols);
+    } else {
+      LOG(ERROR) << argv[0]
+                 << ": Saving isymbols but there are no input symbols.";
+    }
+  }
+
+  if (!FLAGS_save_osymbols.empty()) {
+    const auto *osyms = fst->OutputSymbols();
+    if (osyms) {
+      osyms->WriteText(FLAGS_save_osymbols);
+    } else {
+      LOG(ERROR) << argv[0]
+                 << ": Saving osymbols but there are no output symbols.";
+    }
+  }
+
+  const SymbolTableTextOptions opts(FLAGS_allow_negative_labels);
+
+  std::unique_ptr<SymbolTable> isyms;
+  if (!FLAGS_isymbols.empty()) {
+    isyms.reset(SymbolTable::ReadText(FLAGS_isymbols, opts));
+    fst->SetInputSymbols(isyms.get());
+  } else if (FLAGS_clear_isymbols) {
+    fst->SetInputSymbols(nullptr);
+  }
+  std::unique_ptr<SymbolTable> osyms;
+  if (!FLAGS_osymbols.empty()) {
+    osyms.reset(SymbolTable::ReadText(FLAGS_osymbols, opts));
+    fst->SetOutputSymbols(osyms.get());
+  } else if (FLAGS_clear_osymbols) {
+    fst->SetOutputSymbols(nullptr);
+  }
+
+  using Label = int64;
+  if (!FLAGS_relabel_ipairs.empty()) {
+    std::vector<std::pair<Label, Label>> ipairs;
+    ReadLabelPairs(FLAGS_relabel_ipairs, &ipairs, FLAGS_allow_negative_labels);
+    std::unique_ptr<SymbolTable> isyms_relabel(
+        RelabelSymbolTable(fst->InputSymbols(), ipairs));
+    fst->SetInputSymbols(isyms_relabel.get());
+  }
+  if (!FLAGS_relabel_opairs.empty()) {
+    std::vector<std::pair<Label, Label>> opairs;
+    ReadLabelPairs(FLAGS_relabel_opairs, &opairs, FLAGS_allow_negative_labels);
+    std::unique_ptr<SymbolTable> osyms_relabel(
+        RelabelSymbolTable(fst->OutputSymbols(), opairs));
+    fst->SetOutputSymbols(osyms_relabel.get());
+  }
+
+  if (FLAGS_verify && !s::Verify(*fst)) return 1;
+
+  return !fst->Write(out_name);
+}