// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef BASE_FILE_VERSION_INFO_H_
#define BASE_FILE_VERSION_INFO_H_

#include <memory>
#include <string>

#include "build/build_config.h"
#include "base/base_export.h"
#include "base/strings/string16.h"

#if defined(OS_WIN)
#include <windows.h>
#endif

namespace base {
class FilePath;
}

// Provides an interface for accessing the version information for a file. This
// is the information you access when you select a file in the Windows Explorer,
// right-click select Properties, then click the Version tab, and on the Mac
// when you select a file in the Finder and do a Get Info.
//
// This list of properties is straight out of Win32's VerQueryValue
// <http://msdn.microsoft.com/en-us/library/ms647464.aspx> and the Mac
// version returns values from the Info.plist as appropriate. TODO(avi): make
// this a less-obvious Windows-ism.

class BASE_EXPORT FileVersionInfo {
 public:
  virtual ~FileVersionInfo() {}
#if defined(OS_WIN) || defined(OS_MACOSX)
  // Creates a FileVersionInfo for the specified path. Returns nullptr if
  // something goes wrong (typically the file does not exit or cannot be
  // opened).
  static std::unique_ptr<FileVersionInfo> CreateFileVersionInfo(
      const base::FilePath& file_path);
#endif  // OS_WIN || OS_MACOSX

#if defined(OS_WIN)
  // Creates a FileVersionInfo for the specified module. Returns nullptr in
  // case of error.
  static std::unique_ptr<FileVersionInfo> CreateFileVersionInfoForModule(
      HMODULE module);
#else
  // Creates a FileVersionInfo for the current module. Returns nullptr in case
  // of error.
  static std::unique_ptr<FileVersionInfo>
  CreateFileVersionInfoForCurrentModule();
#endif  // OS_WIN

  // Accessors to the different version properties.
  // Returns an empty string if the property is not found.
  virtual base::string16 company_name() = 0;
  virtual base::string16 company_short_name() = 0;
  virtual base::string16 product_name() = 0;
  virtual base::string16 product_short_name() = 0;
  virtual base::string16 internal_name() = 0;
  virtual base::string16 product_version() = 0;
  virtual base::string16 special_build() = 0;
  virtual base::string16 original_filename() = 0;
  virtual base::string16 file_description() = 0;
  virtual base::string16 file_version() = 0;
};

#endif  // BASE_FILE_VERSION_INFO_H_