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558 lines (498 loc) · 13.5 KB
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//
// AbstractContainerNode.cpp
//
// $Id: //poco/1.4/XML/src/AbstractContainerNode.cpp#2 $
//
// Library: XML
// Package: DOM
// Module: DOM
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/DOM/AbstractContainerNode.h"
#include "Poco/DOM/Document.h"
#include "Poco/DOM/Element.h"
#include "Poco/DOM/Attr.h"
#include "Poco/DOM/DOMException.h"
#include "Poco/DOM/ElementsByTagNameList.h"
#include "Poco/DOM/AutoPtr.h"
#include "Poco/NumberParser.h"
#include "Poco/UnicodeConverter.h"
namespace Poco {
namespace XML {
AbstractContainerNode::AbstractContainerNode(Document* pOwnerDocument):
AbstractNode(pOwnerDocument),
_pFirstChild(0)
{
}
AbstractContainerNode::AbstractContainerNode(Document* pOwnerDocument, const AbstractContainerNode& node):
AbstractNode(pOwnerDocument, node),
_pFirstChild(0)
{
}
AbstractContainerNode::~AbstractContainerNode()
{
AbstractNode* pChild = static_cast<AbstractNode*>(_pFirstChild);
while (pChild)
{
AbstractNode* pDelNode = pChild;
pChild = pChild->_pNext;
pDelNode->_pNext = 0;
pDelNode->_pParent = 0;
pDelNode->release();
}
}
Node* AbstractContainerNode::firstChild() const
{
return _pFirstChild;
}
Node* AbstractContainerNode::lastChild() const
{
AbstractNode* pChild = _pFirstChild;
if (pChild)
{
while (pChild->_pNext) pChild = pChild->_pNext;
return pChild;
}
return 0;
}
Node* AbstractContainerNode::insertBefore(Node* newChild, Node* refChild)
{
poco_check_ptr (newChild);
if (static_cast<AbstractNode*>(newChild)->_pOwner != _pOwner && static_cast<AbstractNode*>(newChild)->_pOwner != this)
throw DOMException(DOMException::WRONG_DOCUMENT_ERR);
if (refChild && static_cast<AbstractNode*>(refChild)->_pParent != this)
throw DOMException(DOMException::NOT_FOUND_ERR);
if (newChild == refChild)
return newChild;
if (this == newChild)
throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
AbstractNode* pFirst = 0;
AbstractNode* pLast = 0;
if (newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE)
{
AbstractContainerNode* pFrag = static_cast<AbstractContainerNode*>(newChild);
pFirst = pFrag->_pFirstChild;
pLast = pFirst;
if (pFirst)
{
while (pLast->_pNext)
{
pLast->_pParent = this;
pLast = pLast->_pNext;
}
pLast->_pParent = this;
}
pFrag->_pFirstChild = 0;
}
else
{
newChild->duplicate();
AbstractContainerNode* pParent = static_cast<AbstractNode*>(newChild)->_pParent;
if (pParent) pParent->removeChild(newChild);
pFirst = static_cast<AbstractNode*>(newChild);
pLast = pFirst;
pFirst->_pParent = this;
}
if (_pFirstChild && pFirst)
{
AbstractNode* pCur = _pFirstChild;
if (pCur == refChild)
{
pLast->_pNext = _pFirstChild;
_pFirstChild = pFirst;
}
else
{
while (pCur && pCur->_pNext != refChild) pCur = pCur->_pNext;
if (pCur)
{
pLast->_pNext = pCur->_pNext;
pCur->_pNext = pFirst;
}
else throw DOMException(DOMException::NOT_FOUND_ERR);
}
}
else _pFirstChild = pFirst;
if (events())
{
while (pFirst && pFirst != pLast->_pNext)
{
pFirst->dispatchNodeInserted();
pFirst->dispatchNodeInsertedIntoDocument();
pFirst = pFirst->_pNext;
}
dispatchSubtreeModified();
}
return newChild;
}
Node* AbstractContainerNode::replaceChild(Node* newChild, Node* oldChild)
{
poco_check_ptr (newChild);
poco_check_ptr (oldChild);
if (static_cast<AbstractNode*>(newChild)->_pOwner != _pOwner && static_cast<AbstractNode*>(newChild)->_pOwner != this)
throw DOMException(DOMException::WRONG_DOCUMENT_ERR);
if (static_cast<AbstractNode*>(oldChild)->_pParent != this)
throw DOMException(DOMException::NOT_FOUND_ERR);
if (newChild == oldChild)
return newChild;
if (this == newChild)
throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
bool doEvents = events();
if (newChild->nodeType() == Node::DOCUMENT_FRAGMENT_NODE)
{
insertBefore(newChild, oldChild);
removeChild(oldChild);
}
else
{
AbstractContainerNode* pParent = static_cast<AbstractNode*>(newChild)->_pParent;
if (pParent) pParent->removeChild(newChild);
if (oldChild == _pFirstChild)
{
if (doEvents)
{
_pFirstChild->dispatchNodeRemoved();
_pFirstChild->dispatchNodeRemovedFromDocument();
}
static_cast<AbstractNode*>(newChild)->_pNext = static_cast<AbstractNode*>(oldChild)->_pNext;
static_cast<AbstractNode*>(newChild)->_pParent = this;
_pFirstChild->_pNext = 0;
_pFirstChild->_pParent = 0;
_pFirstChild = static_cast<AbstractNode*>(newChild);
if (doEvents)
{
static_cast<AbstractNode*>(newChild)->dispatchNodeInserted();
static_cast<AbstractNode*>(newChild)->dispatchNodeInsertedIntoDocument();
}
}
else
{
AbstractNode* pCur = _pFirstChild;
while (pCur && pCur->_pNext != oldChild) pCur = pCur->_pNext;
if (pCur)
{
poco_assert_dbg (pCur->_pNext == oldChild);
if (doEvents)
{
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemoved();
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemovedFromDocument();
}
static_cast<AbstractNode*>(newChild)->_pNext = static_cast<AbstractNode*>(oldChild)->_pNext;
static_cast<AbstractNode*>(newChild)->_pParent = this;
static_cast<AbstractNode*>(oldChild)->_pNext = 0;
static_cast<AbstractNode*>(oldChild)->_pParent = 0;
pCur->_pNext = static_cast<AbstractNode*>(newChild);
if (doEvents)
{
static_cast<AbstractNode*>(newChild)->dispatchNodeInserted();
static_cast<AbstractNode*>(newChild)->dispatchNodeInsertedIntoDocument();
}
}
else throw DOMException(DOMException::NOT_FOUND_ERR);
}
newChild->duplicate();
oldChild->autoRelease();
}
if (doEvents) dispatchSubtreeModified();
return oldChild;
}
Node* AbstractContainerNode::removeChild(Node* oldChild)
{
poco_check_ptr (oldChild);
bool doEvents = events();
if (oldChild == _pFirstChild)
{
if (doEvents)
{
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemoved();
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemovedFromDocument();
}
_pFirstChild = _pFirstChild->_pNext;
static_cast<AbstractNode*>(oldChild)->_pNext = 0;
static_cast<AbstractNode*>(oldChild)->_pParent = 0;
}
else
{
AbstractNode* pCur = _pFirstChild;
while (pCur && pCur->_pNext != oldChild) pCur = pCur->_pNext;
if (pCur)
{
if (doEvents)
{
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemoved();
static_cast<AbstractNode*>(oldChild)->dispatchNodeRemovedFromDocument();
}
pCur->_pNext = pCur->_pNext->_pNext;
static_cast<AbstractNode*>(oldChild)->_pNext = 0;
static_cast<AbstractNode*>(oldChild)->_pParent = 0;
}
else throw DOMException(DOMException::NOT_FOUND_ERR);
}
oldChild->autoRelease();
if (doEvents) dispatchSubtreeModified();
return oldChild;
}
Node* AbstractContainerNode::appendChild(Node* newChild)
{
return insertBefore(newChild, 0);
}
void AbstractContainerNode::dispatchNodeRemovedFromDocument()
{
AbstractNode::dispatchNodeRemovedFromDocument();
Node* pChild = firstChild();
while (pChild)
{
static_cast<AbstractNode*>(pChild)->dispatchNodeRemovedFromDocument();
pChild = pChild->nextSibling();
}
}
void AbstractContainerNode::dispatchNodeInsertedIntoDocument()
{
AbstractNode::dispatchNodeInsertedIntoDocument();
Node* pChild = firstChild();
while (pChild)
{
static_cast<AbstractNode*>(pChild)->dispatchNodeInsertedIntoDocument();
pChild = pChild->nextSibling();
}
}
bool AbstractContainerNode::hasChildNodes() const
{
return _pFirstChild != 0;
}
bool AbstractContainerNode::hasAttributes() const
{
return false;
}
Node* AbstractContainerNode::getNodeByPath(const XMLString& path) const
{
XMLString::const_iterator it = path.begin();
if (it != path.end() && *it == '/')
{
++it;
if (it != path.end() && *it == '/')
{
++it;
XMLString name;
while (it != path.end() && *it != '/' && *it != '@' && *it != '[') name += *it++;
if (it != path.end() && *it == '/') ++it;
if (name.empty()) name += '*';
AutoPtr<ElementsByTagNameList> pList = new ElementsByTagNameList(this, name);
unsigned long length = pList->length();
for (unsigned long i = 0; i < length; i++)
{
XMLString::const_iterator beg = it;
const Node* pNode = findNode(beg, path.end(), pList->item(i), 0);
if (pNode) return const_cast<Node*>(pNode);
}
return 0;
}
}
return const_cast<Node*>(findNode(it, path.end(), this, 0));
}
Node* AbstractContainerNode::getNodeByPathNS(const XMLString& path, const NSMap& nsMap) const
{
XMLString::const_iterator it = path.begin();
if (it != path.end() && *it == '/')
{
++it;
if (it != path.end() && *it == '/')
{
++it;
XMLString name;
while (it != path.end() && *it != '/' && *it != '@' && *it != '[') name += *it++;
if (it != path.end() && *it == '/') ++it;
XMLString namespaceURI;
XMLString localName;
bool nameOK = true;
if (name.empty())
{
namespaceURI += '*';
localName += '*';
}
else
{
nameOK = nsMap.processName(name, namespaceURI, localName, false);
}
if (nameOK)
{
AutoPtr<ElementsByTagNameListNS> pList = new ElementsByTagNameListNS(this, namespaceURI, localName);
unsigned long length = pList->length();
for (unsigned long i = 0; i < length; i++)
{
XMLString::const_iterator beg = it;
const Node* pNode = findNode(beg, path.end(), pList->item(i), &nsMap);
if (pNode) return const_cast<Node*>(pNode);
}
}
return 0;
}
}
return const_cast<Node*>(findNode(it, path.end(), this, &nsMap));
}
const Node* AbstractContainerNode::findNode(XMLString::const_iterator& it, const XMLString::const_iterator& end, const Node* pNode, const NSMap* pNSMap)
{
if (pNode && it != end)
{
if (*it == '[')
{
++it;
if (it != end && *it == '@')
{
++it;
XMLString attr;
while (it != end && *it != ']' && *it != '=') attr += *it++;
if (it != end && *it == '=')
{
++it;
XMLString value;
if (it != end && *it == '\'')
{
++it;
while (it != end && *it != '\'') value += *it++;
if (it != end) ++it;
}
else
{
while (it != end && *it != ']') value += *it++;
}
if (it != end) ++it;
return findNode(it, end, findElement(attr, value, pNode, pNSMap), pNSMap);
}
else
{
if (it != end) ++it;
return findAttribute(attr, pNode, pNSMap);
}
}
else
{
XMLString index;
while (it != end && *it != ']') index += *it++;
if (it != end) ++it;
#ifdef XML_UNICODE_WCHAR_T
std::string idx;
Poco::UnicodeConverter::convert(index, idx);
return findNode(it, end, findElement(Poco::NumberParser::parse(idx), pNode, pNSMap), pNSMap);
#else
return findNode(it, end, findElement(Poco::NumberParser::parse(index), pNode, pNSMap), pNSMap);
#endif
}
}
else
{
while (it != end && *it == '/') ++it;
XMLString key;
while (it != end && *it != '/' && *it != '[') key += *it++;
return findNode(it, end, findElement(key, pNode, pNSMap), pNSMap);
}
}
else return pNode;
}
const Node* AbstractContainerNode::findElement(const XMLString& name, const Node* pNode, const NSMap* pNSMap)
{
Node* pChild = pNode->firstChild();
while (pChild)
{
if (pChild->nodeType() == Node::ELEMENT_NODE && namesAreEqual(pChild, name, pNSMap))
return pChild;
pChild = pChild->nextSibling();
}
return 0;
}
const Node* AbstractContainerNode::findElement(int index, const Node* pNode, const NSMap* pNSMap)
{
const Node* pRefNode = pNode;
if (index > 0)
{
pNode = pNode->nextSibling();
while (pNode)
{
if (namesAreEqual(pNode, pRefNode, pNSMap))
{
if (--index == 0) break;
}
pNode = pNode->nextSibling();
}
}
return pNode;
}
const Node* AbstractContainerNode::findElement(const XMLString& attr, const XMLString& value, const Node* pNode, const NSMap* pNSMap)
{
const Node* pRefNode = pNode;
const Element* pElem = dynamic_cast<const Element*>(pNode);
if (!(pElem && pElem->hasAttributeValue(attr, value, pNSMap)))
{
pNode = pNode->nextSibling();
while (pNode)
{
if (namesAreEqual(pNode, pRefNode, pNSMap))
{
pElem = dynamic_cast<const Element*>(pNode);
if (pElem && pElem->hasAttributeValue(attr, value, pNSMap)) break;
}
pNode = pNode->nextSibling();
}
}
return pNode;
}
const Attr* AbstractContainerNode::findAttribute(const XMLString& name, const Node* pNode, const NSMap* pNSMap)
{
const Attr* pResult(0);
const Element* pElem = dynamic_cast<const Element*>(pNode);
if (pElem)
{
if (pNSMap)
{
XMLString namespaceURI;
XMLString localName;
if (pNSMap->processName(name, namespaceURI, localName, true))
{
pResult = pElem->getAttributeNodeNS(namespaceURI, localName);
}
}
else
{
pResult = pElem->getAttributeNode(name);
}
}
return pResult;
}
bool AbstractContainerNode::hasAttributeValue(const XMLString& name, const XMLString& value, const NSMap* pNSMap) const
{
const Attr* pAttr = findAttribute(name, this, pNSMap);
return pAttr && pAttr->getValue() == value;
}
bool AbstractContainerNode::namesAreEqual(const Node* pNode1, const Node* pNode2, const NSMap* pNSMap)
{
if (pNSMap)
{
return pNode1->localName() == pNode2->localName() && pNode1->namespaceURI() == pNode2->namespaceURI();
}
else
{
return pNode1->nodeName() == pNode2->nodeName();
}
}
bool AbstractContainerNode::namesAreEqual(const Node* pNode, const XMLString& name, const NSMap* pNSMap)
{
if (pNSMap)
{
XMLString namespaceURI;
XMLString localName;
if (pNSMap->processName(name, namespaceURI, localName, false))
{
return pNode->namespaceURI() == namespaceURI && pNode->localName() == localName;
}
else return false;
}
else
{
return pNode->nodeName() == name;
}
}
} } // namespace Poco::XML
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