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//===-- 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);
}
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