Move file enumeration to filepaths.

base/file_path.h

 // Copyright (c) 2008 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 49 matching lines @@
 // | void Function() {
 // |   FilePath log_file_path(kLogFileName);
 // |   [...]
 // | }
 
 #ifndef BASE_FILE_PATH_H_
 #define BASE_FILE_PATH_H_
 
 #include <string>
 
+#include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/basictypes.h"
 
 // Windows-style drive letter support and pathname separator characters can be
 // enabled and disabled independently, to aid testing.  These #defines are
 // here so that the same setting can be used in both the implementation and
 // in the unit test.
 #if defined(OS_WIN)
 #define FILE_PATH_USES_DRIVE_LETTERS
 #define FILE_PATH_USES_WIN_SEPARATORS
 #endif  // OS_WIN
 
@@ skipping 32 matching lines @@
 
   FilePath& operator=(const FilePath& that) {
     path_ = that.path_;
     return *this;
   }
 
   bool operator==(const FilePath& that) const {
     return path_ == that.path_;
   }
 
+  // Required for some STL containers and operations
+  bool operator<(const FilePath& that) const {
+    return path_ < that.path_;
+  }
+
   const StringType& value() const { return path_; }
 
   // Returns true if |character| is in kSeparators.
   static bool IsSeparator(CharType character);
 
   // Returns a FilePath corresponding to the directory containing the path
   // named by this object, stripping away the file component.  If this object
   // only contains one component, returns a FilePath identifying
   // kCurrentDirectory.  If this object already refers to the root directory,
   // returns a FilePath identifying the root directory.
@@ skipping 13 matching lines @@
   // it is an error to pass an absolute path.
   FilePath Append(const StringType& component) const WARN_UNUSED_RESULT;
   FilePath Append(const FilePath& component) const WARN_UNUSED_RESULT;
 
   // Returns true if this FilePath contains an absolute path.  On Windows, an
   // absolute path begins with either a drive letter specification followed by
   // a separator character, or with two separator characters.  On POSIX
   // platforms, an absolute path begins with a separator character.
   bool IsAbsolute() const;
 
+  // Returns a copy of this FilePath that does not end with a trailing
+  // separator.
+  FilePath StripTrailingSeparators() const;
+
   // Older Chromium code assumes that paths are always wstrings.
   // This function converts a wstring to a FilePath, and is useful to smooth
   // porting that old code to the FilePath API.
   // It has "Hack" in its name so people feel bad about using it.
   // TODO(port): remove these functions.
   static FilePath FromWStringHack(const std::wstring& wstring);
 
   // Older Chromium code assumes that paths are always wstrings.
   // This function produces a wstring from a FilePath, and is useful to smooth
   // porting that old code to the FilePath API.
   // It has "Hack" in its name so people feel bad about using it.
   // TODO(port): remove these functions.
   std::wstring ToWStringHack() const;
 
  private:
   // Remove trailing separators from this object.  If the path is absolute, it
   // will never be stripped any more than to refer to the absolute root
   // directory, so "////" will become "/", not "".  A leading pair of
   // separators is never stripped, to support alternate roots.  This is used to
   // support UNC paths on Windows.
-  void StripTrailingSeparators();
+  void StripTrailingSeparatorsInternal();
 
   StringType path_;
 };
 
 // Macros for string literal initialization of FilePath::CharType[].
 #if defined(OS_POSIX)
 #define FILE_PATH_LITERAL(x) x
 #elif defined(OS_WIN)
 #define FILE_PATH_LITERAL(x) L ## x
 #endif  // OS_WIN
 
 #endif  // BASE_FILE_PATH_H_