Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===-- WindowsManifestMerger.h ---------------------------------*- 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 provides a utility for merging Microsoft .manifest files.  These

// files are xml documents which contain meta-information about applications,

// such as whether or not admin access is required, system compatibility,

// versions, etc.  Part of the linking process of an executable may require

// merging several of these .manifest files using a tree-merge following

// specific rules.  Unfortunately, these rules are not documented well

// anywhere.  However, a careful investigation of the behavior of the original

// Microsoft Manifest Tool (mt.exe) revealed the rules of this merge.  As the

// saying goes, code is the best documentation, so please look below if you are

// interested in the exact merging requirements.

//

// Ref:

// https://msdn.microsoft.com/en-us/library/windows/desktop/aa374191(v=vs.85).aspx

//

//===---------------------------------------------------------------------===//

#ifndef LLVM_WINDOWSMANIFEST_WINDOWSMANIFESTMERGER_H

#define LLVM_WINDOWSMANIFEST_WINDOWSMANIFESTMERGER_H

#include "llvm/Support/Error.h"

namespace llvm {

class MemoryBuffer;

class MemoryBufferRef;

namespace windows_manifest {

bool isAvailable();

class WindowsManifestError : public ErrorInfo<WindowsManifestError, ECError> {

public:

  static char ID;

  WindowsManifestError(const Twine &Msg);

  void log(raw_ostream &OS) const override;

private:

  std::string Msg;

};

class WindowsManifestMerger {

public:

  WindowsManifestMerger();

  ~WindowsManifestMerger();

  Error merge(MemoryBufferRef Manifest);

  // Returns vector containing merged xml manifest, or uninitialized vector for

  // empty manifest.

  std::unique_ptr<MemoryBuffer> getMergedManifest();

private:

  class WindowsManifestMergerImpl;

  std::unique_ptr<WindowsManifestMergerImpl> Impl;

};

} // namespace windows_manifest

} // namespace llvm

#endif