Moving away from shell api to support long path names on windows for filesystem.

base/file_path.h

 // Copyright (c) 2010 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.
 
 // FilePath is a container for pathnames stored in a platform's native string
 // type, providing containers for manipulation in according with the
 // platform's conventions for pathnames.  It supports the following path
 // types:
 //
 //                   POSIX            Windows
@@ skipping 133 matching lines @@
 
   // A special path component meaning "this directory."
   static const CharType kCurrentDirectory[];
 
   // A special path component meaning "the parent directory."
   static const CharType kParentDirectory[];
 
   // The character used to identify a file extension.
   static const CharType kExtensionSeparator;
 
+#if defined(OS_WIN)
+  // Path length is limited to 260 on windows unless prefixed

[Mark Mentovai, 2010/12/16 19:48:19]

Windows, a proper name, requires a capital letter. Same on line 317.

[Kavita Kanetkar, 2010/12/17 00:59:32]

Done.

+  // with a special extended path prefix.
+  static const CharType kExtendedPathPrefix[];
+#endif
+
   FilePath();
   FilePath(const FilePath& that);
   explicit FilePath(const StringType& path);
   ~FilePath();
   FilePath& operator=(const FilePath& that);
 
   bool operator==(const FilePath& that) const;
 
   bool operator!=(const FilePath& that) const;
 
@@ skipping 136 matching lines @@
                                        FilePath::StringType* path);
 
   void WriteToPickle(Pickle* pickle);
   bool ReadFromPickle(Pickle* pickle, void** iter);
 
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
   // Normalize all path separators to backslash.
   FilePath NormalizeWindowsPathSeparators() const;
 #endif
 
+#if defined(OS_WIN)
+  // On windows, returns whether or not path starts with extended path prefix.

[Mark Mentovai, 2010/12/16 19:48:19]

path. Which path? The path?

extended path prefix. Which extended path prefix? The extended path prefix?

  // On Windows, returns true if the path starts with the extended path prefix.

[Kavita Kanetkar, 2010/12/17 00:59:32]

Done.

+  bool StartsWithExtendedPathPrefix() const;

[Mark Mentovai, 2010/12/16 19:48:19]

A new function requires a unit test, even if it’s a simple and relatively stupid
test.

[Kavita Kanetkar, 2010/12/17 00:59:32]

Done.

+#endif
+
   // Compare two strings in the same way the file system does.
   // Note that these always ignore case, even on file systems that are case-
   // sensitive. If case-sensitive comparison is ever needed, add corresponding
   // methods here.
   // The methods are written as a static method so that they can also be used
   // on parts of a file path, e.g., just the extension.
   // CompareIgnoreCase() returns -1, 0 or 1 for less-than, equal-to and
   // greater-than respectively.
   static int CompareIgnoreCase(const StringType& string1,
                                const StringType& string2);
@@ skipping 62 matching lines @@
 namespace stdext {
 
 inline size_t hash_value(const FilePath& f) {
   return hash_value(f.value());
 }
 
 }  // namespace stdext
 #endif  // COMPILER
 
 #endif  // BASE_FILE_PATH_H_