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//===--- DarwinSDKInfo.cpp - SDK Information parser for darwin - ----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/DarwinSDKInfo.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/JSON.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
using namespace clang::driver;
using namespace clang;
Expected<Optional<DarwinSDKInfo>>
driver::parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath) {
llvm::SmallString<256> Filepath = SDKRootPath;
llvm::sys::path::append(Filepath, "SDKSettings.json");
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
VFS.getBufferForFile(Filepath);
if (!File) {
// If the file couldn't be read, assume it just doesn't exist.
return None;
}
Expected<llvm::json::Value> Result =
llvm::json::parse(File.get()->getBuffer());
if (!Result)
return Result.takeError();
if (const auto *Obj = Result->getAsObject()) {
auto VersionString = Obj->getString("Version");
if (VersionString) {
VersionTuple Version;
if (!Version.tryParse(*VersionString))
return DarwinSDKInfo(Version);
}
}
return llvm::make_error<llvm::StringError>("invalid SDKSettings.json",
llvm::inconvertibleErrorCode());
}
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