75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
//===-- llvm-tapi-diff.cpp - tbd comparator command-line driver --*- C++-*-===//
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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/MemoryBuffer.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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} // anonymous namespace
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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(Argc, Argv, "Text-based Stubs Comparison Tool");
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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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ExitOnError ExitOnErr("error: '" + InputFileNameLHS + "' ",
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/*DefaultErrorExitCode=*/2);
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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(createStringError(std::errc::executable_format_error,
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"unsupported file format"));
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}
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ExitOnErr.setBanner("error: '" + 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(createStringError(std::errc::executable_format_error,
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"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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