Refactor FileVersionInfo into an interface with platform implementations.

base/file_version_info.h

Index: base/file_version_info.h
diff --git a/base/file_version_info.h b/base/file_version_info.h
index 561c324431ba6908c27e29f0e7c4982853a5f51a..def2ea5a84c3881a20d010c6bf869f586a3458af 100644
--- a/base/file_version_info.h
+++ b/base/file_version_info.h
@@ -7,28 +7,17 @@
 
 #include <string>
 
-#include "base/basictypes.h"
-#include "base/scoped_ptr.h"
-
-#if defined(OS_WIN)
-struct tagVS_FIXEDFILEINFO;
-typedef tagVS_FIXEDFILEINFO VS_FIXEDFILEINFO;
-#elif defined(OS_MACOSX)
-#ifdef __OBJC__
-@class NSBundle;
-#else
-class NSBundle;
-#endif
-#endif
+#include "build/build_config.h"
 
 class FilePath;
 
-// Provides a way to access the version information for a file.
+// 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.
 
 class FileVersionInfo {
  public:
+#if defined(OS_WIN) || defined(OS_MACOSX)
   // Creates a FileVersionInfo for the specified path. Returns NULL if something
   // goes wrong (typically the file does not exit or cannot be opened). The
   // returned object should be deleted when you are done with it.
@@ -36,62 +25,30 @@ class FileVersionInfo {
   // This version, taking a wstring, is deprecated and only kept around
   // until we can fix all callers.
   static FileVersionInfo* CreateFileVersionInfo(const std::wstring& file_path);
+#endif
 
   // Creates a FileVersionInfo for the current module. Returns NULL in case
   // of error. The returned object should be deleted when you are done with it.
   static FileVersionInfo* CreateFileVersionInfoForCurrentModule();
 
-  ~FileVersionInfo();
-
   // Accessors to the different version properties.
   // Returns an empty string if the property is not found.
-  std::wstring company_name();
-  std::wstring company_short_name();
-  std::wstring product_name();
-  std::wstring product_short_name();
-  std::wstring internal_name();
-  std::wstring product_version();
-  std::wstring private_build();
-  std::wstring special_build();
-  std::wstring comments();
-  std::wstring original_filename();
-  std::wstring file_description();
-  std::wstring file_version();
-  std::wstring legal_copyright();
-  std::wstring legal_trademarks();
-  std::wstring last_change();
-  bool is_official_build();
-
-  // Lets you access other properties not covered above.
-  bool GetValue(const wchar_t* name, std::wstring* value);
-
-  // Similar to GetValue but returns a wstring (empty string if the property
-  // does not exist).
-  std::wstring GetStringValue(const wchar_t* name);
-
-#ifdef OS_WIN
-  // Get the fixed file info if it exists. Otherwise NULL
-  VS_FIXEDFILEINFO* fixed_file_info() { return fixed_file_info_; }
-#endif
-
- private:
-#if defined(OS_WIN)
-  FileVersionInfo(void* data, int language, int code_page);
-
-  scoped_ptr_malloc<char> data_;
-  int language_;
-  int code_page_;
-  // This is a pointer into the data_ if it exists. Otherwise NULL.
-  VS_FIXEDFILEINFO* fixed_file_info_;
-#elif defined(OS_MACOSX)
-  explicit FileVersionInfo(NSBundle *bundle);
-
-  NSBundle *bundle_;
-#elif defined(OS_POSIX)
-  FileVersionInfo();
-#endif
-
-  DISALLOW_EVIL_CONSTRUCTORS(FileVersionInfo);
+  virtual std::wstring company_name() = 0;
+  virtual std::wstring company_short_name() = 0;
+  virtual std::wstring product_name() = 0;
+  virtual std::wstring product_short_name() = 0;
+  virtual std::wstring internal_name() = 0;
+  virtual std::wstring product_version() = 0;
+  virtual std::wstring private_build() = 0;
+  virtual std::wstring special_build() = 0;
+  virtual std::wstring comments() = 0;
+  virtual std::wstring original_filename() = 0;
+  virtual std::wstring file_description() = 0;
+  virtual std::wstring file_version() = 0;
+  virtual std::wstring legal_copyright() = 0;
+  virtual std::wstring legal_trademarks() = 0;
+  virtual std::wstring last_change() = 0;
+  virtual bool is_official_build() = 0;
 };
 
 #endif  // BASE_FILE_VERSION_INFO_H__