bf75d402e3
2004/09/13 17:30:24 dvo 1.1.2.3: #i33862# keep XXPathExtension objects instead of extension handles, so
that data held by extension objects is still alive when being
accessed
2004/05/26 14:34:48 lo 1.1.2.2: #i28981# xpath extension
2004/03/18 14:25:16 lo 1.1.2.1: set conext node
307 lines
10 KiB
C++
307 lines
10 KiB
C++
/*************************************************************************
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*
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* $RCSfile: xpathapi.cxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: obo $ $Date: 2004-11-16 12:30:58 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2004 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#include "xpathapi.hxx"
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#include "nodelist.hxx"
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#include "xpathobject.hxx"
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#include <libxml/xpath.h>
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#include <libxml/xpathInternals.h>
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namespace XPath
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{
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Reference< XInterface > CXPathAPI::_getInstance(const Reference< XMultiServiceFactory >& rSMgr)
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{
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// XXX
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// return static_cast< XXPathAPI* >(new CXPathAPI());
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return Reference< XInterface >(static_cast<XXPathAPI*>(new CXPathAPI(rSMgr)));
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}
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CXPathAPI::CXPathAPI(const Reference< XMultiServiceFactory >& rSMgr)
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: m_aFactory(rSMgr)
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{
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}
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const char* CXPathAPI::aImplementationName = "com.sun.star.comp.xml.xpath.XPathAPI";
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const char* CXPathAPI::aSupportedServiceNames[] = {
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"com.sun.star.xml.xpath.XPathAPI",
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NULL
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};
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OUString CXPathAPI::_getImplementationName()
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{
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return OUString::createFromAscii(aImplementationName);
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}
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Sequence<OUString> CXPathAPI::_getSupportedServiceNames()
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{
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Sequence<OUString> aSequence;
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for (int i=0; aSupportedServiceNames[i]!=NULL; i++) {
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aSequence.realloc(i+1);
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aSequence[i]=(OUString::createFromAscii(aSupportedServiceNames[i]));
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}
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return aSequence;
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}
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Sequence< OUString > SAL_CALL CXPathAPI::getSupportedServiceNames()
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throw (RuntimeException)
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{
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return CXPathAPI::_getSupportedServiceNames();
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}
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OUString SAL_CALL CXPathAPI::getImplementationName()
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throw (RuntimeException)
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{
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return CXPathAPI::_getImplementationName();
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}
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sal_Bool SAL_CALL CXPathAPI::supportsService(const OUString& aServiceName)
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throw (RuntimeException)
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{
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Sequence< OUString > supported = CXPathAPI::_getSupportedServiceNames();
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for (sal_Int32 i=0; i<supported.getLength(); i++)
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{
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if (supported[i] == aServiceName) return sal_True;
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}
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return sal_False;
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}
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// -------------------------------------------------------------------
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void SAL_CALL CXPathAPI::registerNS(const OUString& aPrefix, const OUString& aURI)
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throw (RuntimeException)
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{
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m_nsmap.insert(nsmap_t::value_type(aPrefix, aURI));
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}
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void SAL_CALL CXPathAPI::unregisterNS(const OUString& aPrefix, const OUString& aURI)
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throw (RuntimeException)
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{
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if ((m_nsmap.find(aPrefix))->second.equals(aURI))
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m_nsmap.erase(aPrefix);
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}
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static void _registerNamespaces(xmlXPathContextPtr ctx, const nsmap_t& nsmap)
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{
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nsmap_t::const_iterator i = nsmap.begin();
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OString oprefix, ouri;
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xmlChar *p, *u;
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while (i != nsmap.end())
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{
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oprefix = OUStringToOString(i->first, RTL_TEXTENCODING_UTF8);
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ouri = OUStringToOString(i->second, RTL_TEXTENCODING_UTF8);
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p = (xmlChar*)oprefix.getStr();
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u = (xmlChar*)ouri.getStr();
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xmlXPathRegisterNs(ctx, p, u);
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i++;
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}
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}
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static void _registerExtensions(xmlXPathContextPtr ctx, const extensions_t& extensions)
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{
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extensions_t::const_iterator i = extensions.begin();
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while (i != extensions.end())
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{
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Libxml2ExtensionHandle aHandle = (*i)->getLibxml2ExtensionHandle();
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if ( aHandle.functionLookupFunction != 0 )
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xmlXPathRegisterFuncLookup(ctx, (xmlXPathFuncLookupFunc) aHandle.functionLookupFunction, (void*)(aHandle.functionData));
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if ( aHandle.variableLookupFunction != 0 )
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xmlXPathRegisterVariableLookup(ctx, (xmlXPathVariableLookupFunc) aHandle.variableLookupFunction, (void*)(aHandle.variableData));
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i++;
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}
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}
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/**
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Use an XPath string to select a nodelist.
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*/
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Reference< XNodeList > SAL_CALL CXPathAPI::selectNodeList(
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const Reference< XNode >& contextNode,
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const OUString& str)
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throw (RuntimeException)
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{
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xmlXPathContextPtr xpathCtx;
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xmlXPathObjectPtr xpathObj;
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// get the node and document
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Reference< XUnoTunnel > tunnel(contextNode, UNO_QUERY);
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xmlNodePtr pNode = (xmlNodePtr)tunnel->getSomething(Sequence< sal_Int8 >());
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xmlDocPtr pDoc = pNode->doc;
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/* Create xpath evaluation context */
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xpathCtx = xmlXPathNewContext(pDoc);
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if (xpathCtx == NULL)throw RuntimeException();
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_registerNamespaces(xpathCtx, m_nsmap);
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OString o1 = OUStringToOString(str, RTL_TEXTENCODING_UTF8);
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xmlChar *xStr = (xmlChar*)o1.getStr();
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/* run the query */
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if ((xpathObj = xmlXPathEval(xStr, xpathCtx)) == NULL)
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{
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xmlXPathFreeContext(xpathCtx);
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throw RuntimeException();
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}
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Reference< XNodeList > aList(new CNodeList(xpathObj));
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xmlXPathFreeContext(xpathCtx);
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return aList;
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}
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/**
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Use an XPath string to select a nodelist.
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*/
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Reference< XNodeList > SAL_CALL CXPathAPI::selectNodeListNS(
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const Reference< XNode >& contextNode,
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const OUString& str,
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const Reference< XNode >& namespaceNode)
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throw (RuntimeException)
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{
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return Reference< XNodeList>();
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}
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/**
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Use an XPath string to select a single node.
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*/
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Reference< XNode > SAL_CALL CXPathAPI::selectSingleNode(
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const Reference< XNode >& contextNode,
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const OUString& str)
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throw (RuntimeException)
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{
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Reference< XNodeList > aList = selectNodeList(contextNode, str);
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Reference< XNode > aNode = aList->item(0);
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return aNode;
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}
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/**
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Use an XPath string to select a single node.
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*/
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Reference< XNode > SAL_CALL CXPathAPI::selectSingleNodeNS(
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const Reference< XNode >& contextNode,
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const OUString& str,
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const Reference< XNode >& namespaceNode)
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throw (RuntimeException)
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{
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return Reference< XNode >();
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}
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Reference< XXPathObject > SAL_CALL CXPathAPI::eval(const Reference< XNode >& contextNode, const OUString& str)
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throw (RuntimeException)
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{
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xmlXPathContextPtr xpathCtx;
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xmlXPathObjectPtr xpathObj;
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// get the node and document
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Reference< XUnoTunnel > tunnel(contextNode, UNO_QUERY);
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xmlNodePtr pNode = (xmlNodePtr)tunnel->getSomething(Sequence< sal_Int8 >());
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xmlDocPtr pDoc = pNode->doc;
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/* Create xpath evaluation context */
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xpathCtx = xmlXPathNewContext(pDoc);
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if (xpathCtx == NULL)throw RuntimeException();
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// set conext node
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xpathCtx->node = pNode;
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_registerNamespaces(xpathCtx, m_nsmap);
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_registerExtensions(xpathCtx, m_extensions);
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OString o1 = OUStringToOString(str, RTL_TEXTENCODING_UTF8);
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xmlChar *xStr = (xmlChar*)o1.getStr();
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/* run the query */
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if ((xpathObj = xmlXPathEval(xStr, xpathCtx)) == NULL) {
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// OSL_ENSURE(xpathCtx->lastError == NULL, xpathCtx->lastError->message);
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xmlXPathFreeContext(xpathCtx);
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throw RuntimeException();
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}
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xmlXPathFreeContext(xpathCtx);
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Reference< XXPathObject > aObj(new CXPathObject(xpathObj));
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return aObj;
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}
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Reference< XXPathObject > SAL_CALL CXPathAPI::evalNS(const Reference< XNode >& contextNode, const OUString& str, const Reference< XNode >& namespaceNode)
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throw (RuntimeException)
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{
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return Reference< XXPathObject>();
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}
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void SAL_CALL CXPathAPI::registerExtension(const OUString& aName) throw (RuntimeException)
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{
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// get extension from service manager
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Reference< XXPathExtension > aExtension(m_aFactory->createInstance(aName), UNO_QUERY_THROW);
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m_extensions.push_back( aExtension );
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}
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void SAL_CALL CXPathAPI::registerExtensionInstance(const Reference< XXPathExtension>& aExtension) throw (RuntimeException)
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{
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if (aExtension.is()) {
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m_extensions.push_back( aExtension );
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}
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else
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throw RuntimeException();
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}
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}
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