1 files changed, 89 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/tools/llvm-tapi-diff/llvm-tapi-diff.cpp b/contrib/llvm-project/llvm/tools/llvm-tapi-diff/llvm-tapi-diff.cpp
new file mode 100644
index 000000000000..40f1eec162be
--- /dev/null
+++ b/contrib/llvm-project/llvm/tools/llvm-tapi-diff/llvm-tapi-diff.cpp
@@ -0,0 +1,89 @@
+//===-- llvm-tapi-diff.cpp - tbd comparator command-line driver ---*-
+// C++
+//-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the command-line driver for the llvm-tapi difference
+// engine.
+//
+//===----------------------------------------------------------------------===//
+#include "DiffEngine.h"
+#include "llvm/Object/TapiUniversal.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/WithColor.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstdlib>
+
+using namespace llvm;
+using namespace MachO;
+using namespace object;
+
+namespace {
+cl::OptionCategory NMCat("llvm-tapi-diff Options");
+cl::opt<std::string> InputFileNameLHS(cl::Positional, cl::desc("<first file>"),
+                                      cl::cat(NMCat));
+cl::opt<std::string> InputFileNameRHS(cl::Positional, cl::desc("<second file>"),
+                                      cl::cat(NMCat));
+
+std::string ToolName;
+} // anonymous namespace
+
+ExitOnError ExitOnErr;
+
+void setErrorBanner(ExitOnError &ExitOnErr, std::string InputFile) {
+  ExitOnErr.setBanner(ToolName + ": error: " + InputFile + ": ");
+}
+
+Expected<std::unique_ptr<Binary>> convertFileToBinary(std::string &Filename) {
+  ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
+      MemoryBuffer::getFileOrSTDIN(Filename);
+  if (BufferOrErr.getError())
+    return errorCodeToError(BufferOrErr.getError());
+  return createBinary(BufferOrErr.get()->getMemBufferRef());
+}
+
+int main(int Argc, char **Argv) {
+  InitLLVM X(Argc, Argv);
+  cl::HideUnrelatedOptions(NMCat);
+  cl::ParseCommandLineOptions(
+      Argc, Argv,
+      "This tool will compare two tbd files and return the "
+      "differences in those files.");
+  if (InputFileNameLHS.empty() || InputFileNameRHS.empty()) {
+    cl::PrintHelpMessage();
+    return EXIT_FAILURE;
+  }
+
+  ToolName = Argv[0];
+
+  setErrorBanner(ExitOnErr, InputFileNameLHS);
+  auto BinLHS = ExitOnErr(convertFileToBinary(InputFileNameLHS));
+
+  TapiUniversal *FileLHS = dyn_cast<TapiUniversal>(BinLHS.get());
+  if (!FileLHS) {
+    ExitOnErr(
+        createStringError(std::errc::executable_format_error,
+                          "Error when parsing file, unsupported file format"));
+  }
+
+  setErrorBanner(ExitOnErr, InputFileNameRHS);
+  auto BinRHS = ExitOnErr(convertFileToBinary(InputFileNameRHS));
+
+  TapiUniversal *FileRHS = dyn_cast<TapiUniversal>(BinRHS.get());
+  if (!FileRHS) {
+    ExitOnErr(
+        createStringError(std::errc::executable_format_error,
+                          "Error when parsing file, unsupported file format"));
+  }
+
+  raw_ostream &OS = outs();
+
+  return DiffEngine(FileLHS, FileRHS).compareFiles(OS);
+}