1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef DOMFilePath_h 32#define DOMFilePath_h 33 34#if ENABLE(FILE_SYSTEM) 35 36#include <wtf/PassRefPtr.h> 37#include <wtf/RefCounted.h> 38#include <wtf/text/WTFString.h> 39 40namespace WebCore { 41 42// DOMFileSystem path utilities. All methods in this class are static. 43class DOMFilePath { 44public: 45 static const char separator; 46 static const char root[]; 47 48 // Returns the name part from the given path. 49 static String getName(const String& path); 50 51 // Returns the parent directory path of the given path. 52 static String getDirectory(const String& path); 53 54 // Checks if a given path is a parent of mayBeChild. This method assumes given paths are absolute and do not have extra references to a parent (i.e. "../"). 55 static bool isParentOf(const String& path, const String& mayBeChild); 56 57 // Appends the separator at the end of the path if it's not there already. 58 static String ensureDirectoryPath(const String& path); 59 60 // Returns a new path by appending a separator and the supplied path component to the path. 61 static String append(const String& path, const String& component); 62 63 static bool isAbsolute(const String& path) 64 { 65 return path.startsWith(DOMFilePath::root); 66 } 67 68 static bool endsWithSeparator(const String& path) 69 { 70 return path[path.length() - 1] == DOMFilePath::separator; 71 } 72 73 // Evaluates all "../" and "./" segments. Note that "/../" expands to "/", so you can't ever refer to anything above the root directory. 74 static String removeExtraParentReferences(const String& path); 75 76 // Checks if the given path follows the FileSystem API naming restrictions. 77 static bool isValidPath(const String& path); 78 79 // Checks if the given name follows the FileSystem API naming restrictions. 80 static bool isValidName(const String& name); 81 82private: 83 DOMFilePath() { } 84}; 85 86} // namespace WebCore 87 88#endif // ENABLE(FILE_SYSTEM) 89 90#endif // DOMFilePath_h 91