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

base/file_path.cc

 // 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.
 
 #include "base/file_path.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_MACOSX)
 #include <CoreFoundation/CoreFoundation.h>
@@ skipping 16 matching lines @@
 
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/");
 #else  // FILE_PATH_USES_WIN_SEPARATORS
 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/");
 #endif  // FILE_PATH_USES_WIN_SEPARATORS
 
 const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL(".");
 const FilePath::CharType FilePath::kParentDirectory[] = FILE_PATH_LITERAL("..");
 
+#if defined(OS_WIN)
+const FilePath::CharType FilePath::kExtendedPathPrefix[] = FILE_PATH_LITERAL(
+    "\\\\?\\");

[Mark Mentovai, 2010/12/17 01:58:49]

This is wrapped poorly. Wrap after the =, so FILE_PATH_LITERAL("\\\\?\\"); is on
a line by itself.

+#endif
+
 const FilePath::CharType FilePath::kExtensionSeparator = FILE_PATH_LITERAL('.');
 
 typedef FilePath::StringType StringType;
 
 namespace {
 
 const char* kCommonDoubleExtensions[] = { "gz", "z", "bz2" };
 
 // If this FilePath contains a drive letter specification, returns the
 // position of the last character of the drive letter specification,
@@ skipping 1136 matching lines @@
 
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
 FilePath FilePath::NormalizeWindowsPathSeparators() const {
   StringType copy = path_;
   for (size_t i = 1; i < arraysize(kSeparators); ++i) {
     std::replace(copy.begin(), copy.end(), kSeparators[i], kSeparators[0]);
   }
   return FilePath(copy);
 }
 #endif
+
+#if defined(OS_WIN)
+bool FilePath::StartsWithExtendedPathPrefix() const {
+  return StartsWith(path_, kExtendedPathPrefix, false);
+}
+#endif