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edcfd20e4e
This is relanding commit d1d36f7ad2ae82bea8a6fcc40d6c42a72e21f096 . This patch additionally addresses failures found in buildbots due to unstable build ordering & post review comments. This patch introduces a new tool, llvm-tapi-diff, that compares and returns the diff of two TBD files. Reviewed By: ributzka, JDevlieghere Differential Revision: https://reviews.llvm.org/D101835
90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
//===-- llvm-tapi-diff.cpp - tbd comparator command-line driver ---*-
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// C++
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//-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the command-line driver for the llvm-tapi difference
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// engine.
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//
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//===----------------------------------------------------------------------===//
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#include "DiffEngine.h"
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#include "llvm/Object/TapiUniversal.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/WithColor.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdlib>
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using namespace llvm;
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using namespace MachO;
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using namespace object;
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namespace {
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cl::OptionCategory NMCat("llvm-tapi-diff Options");
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cl::opt<std::string> InputFileNameLHS(cl::Positional, cl::desc("<first file>"),
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cl::cat(NMCat));
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cl::opt<std::string> InputFileNameRHS(cl::Positional, cl::desc("<second file>"),
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cl::cat(NMCat));
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std::string ToolName;
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} // anonymous namespace
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ExitOnError ExitOnErr;
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void setErrorBanner(ExitOnError &ExitOnErr, std::string InputFile) {
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ExitOnErr.setBanner(ToolName + ": error: " + InputFile + ": ");
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}
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Expected<std::unique_ptr<Binary>> convertFileToBinary(std::string &Filename) {
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ErrorOr<std::unique_ptr<MemoryBuffer>> BufferOrErr =
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MemoryBuffer::getFileOrSTDIN(Filename);
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if (BufferOrErr.getError())
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return errorCodeToError(BufferOrErr.getError());
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return createBinary(BufferOrErr.get()->getMemBufferRef());
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}
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int main(int Argc, char **Argv) {
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InitLLVM X(Argc, Argv);
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cl::HideUnrelatedOptions(NMCat);
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cl::ParseCommandLineOptions(
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Argc, Argv,
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"This tool will compare two tbd files and return the "
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"differences in those files.");
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if (InputFileNameLHS.empty() || InputFileNameRHS.empty()) {
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cl::PrintHelpMessage();
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return EXIT_FAILURE;
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}
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ToolName = Argv[0];
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setErrorBanner(ExitOnErr, InputFileNameLHS);
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auto BinLHS = ExitOnErr(convertFileToBinary(InputFileNameLHS));
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TapiUniversal *FileLHS = dyn_cast<TapiUniversal>(BinLHS.get());
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if (!FileLHS) {
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ExitOnErr(
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createStringError(std::errc::executable_format_error,
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"Error when parsing file, unsupported file format"));
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}
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setErrorBanner(ExitOnErr, InputFileNameRHS);
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auto BinRHS = ExitOnErr(convertFileToBinary(InputFileNameRHS));
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TapiUniversal *FileRHS = dyn_cast<TapiUniversal>(BinRHS.get());
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if (!FileRHS) {
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ExitOnErr(
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createStringError(std::errc::executable_format_error,
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"Error when parsing file, unsupported file format"));
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}
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raw_ostream &OS = outs();
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return DiffEngine(FileLHS, FileRHS).compareFiles(OS);
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}
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