1/* 2 * Copyright (C) 2005 Frerich Raabe <raabe@kde.org> 3 * Copyright (C) 2006, 2009 Apple Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28#include "XPathUtil.h" 29 30#if ENABLE(XPATH) 31 32#include "ContainerNode.h" 33 34namespace WebCore { 35namespace XPath { 36 37bool isRootDomNode(Node* node) 38{ 39 return node && !node->parentNode(); 40} 41 42String stringValue(Node* node) 43{ 44 switch (node->nodeType()) { 45 case Node::ATTRIBUTE_NODE: 46 case Node::PROCESSING_INSTRUCTION_NODE: 47 case Node::COMMENT_NODE: 48 case Node::TEXT_NODE: 49 case Node::CDATA_SECTION_NODE: 50 case Node::XPATH_NAMESPACE_NODE: 51 return node->nodeValue(); 52 default: 53 if (isRootDomNode(node) || node->nodeType() == Node::ELEMENT_NODE) { 54 Vector<UChar> result; 55 result.reserveCapacity(1024); 56 57 for (Node* n = node->firstChild(); n; n = n->traverseNextNode(node)) { 58 if (n->isTextNode()) { 59 const String& nodeValue = n->nodeValue(); 60 result.append(nodeValue.characters(), nodeValue.length()); 61 } 62 } 63 64 return String::adopt(result); 65 } 66 } 67 68 return String(); 69} 70 71bool isValidContextNode(Node* node) 72{ 73 if (!node) 74 return false; 75 switch (node->nodeType()) { 76 case Node::ATTRIBUTE_NODE: 77 case Node::CDATA_SECTION_NODE: 78 case Node::COMMENT_NODE: 79 case Node::DOCUMENT_NODE: 80 case Node::ELEMENT_NODE: 81 case Node::PROCESSING_INSTRUCTION_NODE: 82 case Node::XPATH_NAMESPACE_NODE: 83 return true; 84 case Node::DOCUMENT_FRAGMENT_NODE: 85 case Node::DOCUMENT_TYPE_NODE: 86 case Node::ENTITY_NODE: 87 case Node::ENTITY_REFERENCE_NODE: 88 case Node::NOTATION_NODE: 89 return false; 90 case Node::TEXT_NODE: 91 return !(node->parentNode() && node->parentNode()->isAttributeNode()); 92 } 93 ASSERT_NOT_REACHED(); 94 return false; 95} 96 97} 98} 99 100#endif // ENABLE(XPATH) 101