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