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 #include "wtf/PassRefPtr.h" 35 #include "wtf/RefCounted.h" 36 #include "wtf/text/WTFString.h" 37 38 namespace WebCore { 39 40 // DOMFileSystem path utilities. All methods in this class are static. 41 class DOMFilePath { 42 public: 43 static const char separator; 44 static const char root[]; 45 46 // Returns the name part from the given path. 47 static String getName(const String& path); 48 49 // Returns the parent directory path of the given path. 50 static String getDirectory(const String& path); 51 52 // 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. "../"). 53 static bool isParentOf(const String& path, const String& mayBeChild); 54 55 // Appends the separator at the end of the path if it's not there already. 56 static String ensureDirectoryPath(const String& path); 57 58 // Returns a new path by appending a separator and the supplied path component to the path. 59 static String append(const String& path, const String& component); 60 61 static bool isAbsolute(const String& path) 62 { 63 return path.startsWith(DOMFilePath::root); 64 } 65 66 static bool endsWithSeparator(const String& path) 67 { 68 return path[path.length() - 1] == DOMFilePath::separator; 69 } 70 71 // Evaluates all "../" and "./" segments. Note that "/../" expands to "/", so you can't ever refer to anything above the root directory. 72 static String removeExtraParentReferences(const String& path); 73 74 // Checks if the given path follows the FileSystem API naming restrictions. 75 static bool isValidPath(const String& path); 76 77 // Checks if the given name follows the FileSystem API naming restrictions. 78 static bool isValidName(const String& name); 79 80 private: 81 DOMFilePath() { } 82 }; 83 84 } // namespace WebCore 85 86 #endif // DOMFilePath_h 87
