base/file_version_info.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef BASE_FILE_VERSION_INFO_H__
   6 #define BASE_FILE_VERSION_INFO_H__
   7
   8 #include "build/build_config.h"
   9
  10 #if defined(OS_WIN)
  11 #include <windows.h>
  12 // http://blogs.msdn.com/oldnewthing/archive/2004/10/25/247180.aspx
  13 extern "C" IMAGE_DOS_HEADER __ImageBase;
  14 #endif  // OS_WIN
  15
  16 #include <string>
  17
  18 #include "base/base_export.h"
  19 #include "base/string16.h"
  20
  21 namespace base {
  22 class FilePath;
  23 }
  24
  25 // Provides an interface for accessing the version information for a file. This
  26 // is the information you access when you select a file in the Windows Explorer,
  27 // right-click select Properties, then click the Version tab, and on the Mac
  28 // when you select a file in the Finder and do a Get Info.
  29 //
  30 // This list of properties is straight out of Win32's VerQueryValue
  31 // <http://msdn.microsoft.com/en-us/library/ms647464.aspx> and the Mac
  32 // version returns values from the Info.plist as appropriate. TODO(avi): make
  33 // this a less-obvious Windows-ism.
  34
  35 class FileVersionInfo {
  36  public:
  37   virtual ~FileVersionInfo() {}
  38 #if defined(OS_WIN) || defined(OS_MACOSX)
  39   // Creates a FileVersionInfo for the specified path. Returns NULL if something
  40   // goes wrong (typically the file does not exit or cannot be opened). The
  41   // returned object should be deleted when you are done with it.
  42   BASE_EXPORT static FileVersionInfo* CreateFileVersionInfo(
  43       const base::FilePath& file_path);
  44 #endif  // OS_WIN || OS_MACOSX
  45
  46 #if defined(OS_WIN)
  47   // Creates a FileVersionInfo for the specified module. Returns NULL in case
  48   // of error. The returned object should be deleted when you are done with it.
  49   BASE_EXPORT static FileVersionInfo* CreateFileVersionInfoForModule(
  50       HMODULE module);
  51
  52   // Creates a FileVersionInfo for the current module. Returns NULL in case
  53   // of error. The returned object should be deleted when you are done with it.
  54   // This function should be inlined so that the "current module" is evaluated
  55   // correctly, instead of being the module that contains base.
  56   __forceinline static FileVersionInfo*
  57   CreateFileVersionInfoForCurrentModule() {
  58     HMODULE module = reinterpret_cast<HMODULE>(&__ImageBase);
  59     return CreateFileVersionInfoForModule(module);
  60   }
  61 #else
  62   // Creates a FileVersionInfo for the current module. Returns NULL in case
  63   // of error. The returned object should be deleted when you are done with it.
  64   BASE_EXPORT static FileVersionInfo* CreateFileVersionInfoForCurrentModule();
  65 #endif  // OS_WIN
  66
  67   // Accessors to the different version properties.
  68   // Returns an empty string if the property is not found.
  69   virtual string16 company_name() = 0;
  70   virtual string16 company_short_name() = 0;
  71   virtual string16 product_name() = 0;
  72   virtual string16 product_short_name() = 0;
  73   virtual string16 internal_name() = 0;
  74   virtual string16 product_version() = 0;
  75   virtual string16 private_build() = 0;
  76   virtual string16 special_build() = 0;
  77   virtual string16 comments() = 0;
  78   virtual string16 original_filename() = 0;
  79   virtual string16 file_description() = 0;
  80   virtual string16 file_version() = 0;
  81   virtual string16 legal_copyright() = 0;
  82   virtual string16 legal_trademarks() = 0;
  83   virtual string16 last_change() = 0;
  84   virtual bool is_official_build() = 0;
  85 };
  86
  87 #endif  // BASE_FILE_VERSION_INFO_H__