DOM_DOMImplementation.cpp
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上传日期:2013-06-25
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Visual C++
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: DOM_DOMImplementation.cpp,v 1.5 2003/05/22 02:26:50 knoaman Exp $
- */
- #include "DOM_DOMImplementation.hpp"
- #include "DOM_Document.hpp"
- #include "DOM_DocumentType.hpp"
- #include "DOM_DOMException.hpp"
- #include "DocumentImpl.hpp"
- #include "DocumentTypeImpl.hpp"
- #include "DStringPool.hpp"
- #include <xercesc/util/XMLChar.hpp>
- #include <xercesc/util/PlatformUtils.hpp>
- #include <xercesc/util/XMLRegisterCleanup.hpp>
- XERCES_CPP_NAMESPACE_BEGIN
- //
- // Static constants. These are lazily initialized on first usage.
- // (Static constructors can not be safely used because
- // of order of initialization dependencies.)
- static DOM_DOMImplementation *gDomimp; // Points to the singleton instance
- // of DOMImplementation that is returned
- // by any call to getImplementation().
- static DOMString *gXML = 0; // Points to "XML"
- static DOMString *g1_0 = 0; // Points to "1.0"
- static DOMString *g2_0 = 0; // Points to "2.0"
- static DOMString *gTrav = 0; // Points to "Traversal"
- static DOMString *gRange = 0; // Points to "Range"
- static DOMString *gCore = 0; // Points to "Core"
- //
- // we define only one clean up object, if any of the above
- // ever get initialized, then the cleanup function will be
- // registered to the same cleanup Obj again and again.
- //
- // that cleanup function will delete/null all the g*
- //
- static XMLRegisterCleanup DOM_DOMImplementationCleanup;
- // Note #1136 - There needs to be a separate implementation class for
- // DOMImplementation, so that the user programming model
- // is consistent with the rest of the C++ DOM API, and
- // so that hasFeature will only work on the result of
- // getImplementation(), and not on DOM_DOMImplemenation objects
- // created with the default constructor.
- //
- DOM_DOMImplementation::DOM_DOMImplementation() {
- };
- DOM_DOMImplementation::DOM_DOMImplementation(const DOM_DOMImplementation & other)
- {
- };
- DOM_DOMImplementation::~DOM_DOMImplementation()
- {
- };
- DOM_DOMImplementation & DOM_DOMImplementation::operator = (const DOM_DOMImplementation & other)
- {
- return *this;
- };
- // -----------------------------------------------------------------------
- // Reset the singleton DOM_DOMImplementation
- // -----------------------------------------------------------------------
- static void reinitImplementation() {
- delete gDomimp;
- gDomimp = 0;
- }
- // getImplementation() - Always returns the same singleton instance, which
- // is lazily created on the first call. Note that
- // DOM_Implementation must be thread-safe because
- // it is common to all DOM documents, and while a single
- // document is not thread-safe within itself, we do
- // promise that different documents can safely be
- // used concurrently by different threads.
- //
- DOM_DOMImplementation &DOM_DOMImplementation::getImplementation() {
- static XMLRegisterCleanup implementationCleanup;
- if (gDomimp == 0)
- {
- DOM_DOMImplementation *t = new DOM_DOMImplementation;
- if (XMLPlatformUtils::compareAndSwap((void **)&gDomimp, t, 0) != 0)
- {
- delete t;
- }
- else
- {
- implementationCleanup.registerCleanup(reinitImplementation);
- }
- }
- return *gDomimp;
- };
- bool DOM_DOMImplementation::hasFeature(const DOMString &feature, const DOMString &version)
- {
- bool anyVersion = (version == null || version.length() == 0);
- bool version1_0 = version.equals(DStringPool::getStaticString("1.0"
- , &g1_0
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup));
- bool version2_0 = version.equals(DStringPool::getStaticString("2.0"
- , &g2_0
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup));
- // case-insensitive compare
- if(!XMLString::compareIString(feature.rawBuffer(), DStringPool::getStaticString("XML"
- , &gXML
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup).rawBuffer())
- && (anyVersion || version1_0 || version2_0))
- return true;
- if(!XMLString::compareIString(feature.rawBuffer(), DStringPool::getStaticString("Core"
- , &gCore
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup).rawBuffer())
- && (anyVersion || version1_0 || version2_0))
- return true;
- if(!XMLString::compareIString(feature.rawBuffer(), DStringPool::getStaticString("Traversal"
- , &gTrav
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup).rawBuffer())
- && (anyVersion || version2_0))
- return true;
- if(!XMLString::compareIString(feature.rawBuffer(), DStringPool::getStaticString("Range"
- , &gRange
- , reinitDOM_DOMImplementation
- , DOM_DOMImplementationCleanup).rawBuffer())
- && (anyVersion || version2_0))
- return true;
- return false;
- }
- //Introduced in DOM Level 2
- DOM_DocumentType DOM_DOMImplementation::createDocumentType(const DOMString &qualifiedName,
- const DOMString &publicId, const DOMString &systemId)
- {
- if(!XMLChar1_0::isValidName(qualifiedName.rawBuffer(), XMLString::stringLen(qualifiedName.rawBuffer())))
- throw DOM_DOMException(DOM_DOMException::INVALID_CHARACTER_ERR,null);
- return DOM_DocumentType(new DocumentTypeImpl(null, qualifiedName, publicId, systemId));
- }
- DOM_Document DOM_DOMImplementation::createDocument(const DOMString &namespaceURI,
- const DOMString &qualifiedName, const DOM_DocumentType &doctype, MemoryManager* const manager)
- {
- return DOM_Document(new (manager) DocumentImpl(namespaceURI, qualifiedName,
- doctype == null ? null : (DocumentTypeImpl *) doctype.fImpl, manager));
- }
- // -----------------------------------------------------------------------
- // Notification that lazy data has been deleted
- // -----------------------------------------------------------------------
- void DOM_DOMImplementation::reinitDOM_DOMImplementation() {
- delete gXML;
- gXML = 0;
- delete g1_0;
- g1_0 = 0;
- delete g2_0;
- g2_0 = 0;
- delete gTrav;
- gTrav = 0;
- delete gRange;
- gRange = 0;
- delete gCore;
- gCore = 0;
- }
- XERCES_CPP_NAMESPACE_END