1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 29*cdf0e10cSrcweir #include "precompiled_forms.hxx" 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #include "pathexpression.hxx" 32*cdf0e10cSrcweir #include "unohelper.hxx" 33*cdf0e10cSrcweir #include "evaluationcontext.hxx" 34*cdf0e10cSrcweir #include "NameContainer.hxx" 35*cdf0e10cSrcweir 36*cdf0e10cSrcweir #include <com/sun/star/xml/dom/XNode.hpp> 37*cdf0e10cSrcweir #include <com/sun/star/xml/dom/XNodeList.hpp> 38*cdf0e10cSrcweir #include <com/sun/star/xml/dom/NodeType.hpp> 39*cdf0e10cSrcweir #include <com/sun/star/xml/dom/events/XEventListener.hpp> 40*cdf0e10cSrcweir #include <com/sun/star/xml/dom/events/XEventTarget.hpp> 41*cdf0e10cSrcweir #include <com/sun/star/xml/xpath/XXPathObject.hpp> 42*cdf0e10cSrcweir #include <com/sun/star/container/XNameContainer.hpp> 43*cdf0e10cSrcweir #include <com/sun/star/uno/Sequence.hxx> 44*cdf0e10cSrcweir #include <rtl/ustrbuf.hxx> 45*cdf0e10cSrcweir 46*cdf0e10cSrcweir #include <unotools/textsearch.hxx> 47*cdf0e10cSrcweir 48*cdf0e10cSrcweir #include <algorithm> 49*cdf0e10cSrcweir #include <functional> 50*cdf0e10cSrcweir 51*cdf0e10cSrcweir 52*cdf0e10cSrcweir using rtl::OUString; 53*cdf0e10cSrcweir using rtl::OUStringBuffer; 54*cdf0e10cSrcweir using com::sun::star::uno::Reference; 55*cdf0e10cSrcweir using com::sun::star::uno::Sequence; 56*cdf0e10cSrcweir using com::sun::star::xml::dom::XNode; 57*cdf0e10cSrcweir using com::sun::star::xml::dom::XNodeList; 58*cdf0e10cSrcweir using com::sun::star::xml::dom::events::XEventListener; 59*cdf0e10cSrcweir using com::sun::star::xml::dom::events::XEventTarget; 60*cdf0e10cSrcweir using com::sun::star::container::XNameContainer; 61*cdf0e10cSrcweir using com::sun::star::xml::xpath::XXPathObject; 62*cdf0e10cSrcweir using com::sun::star::uno::RuntimeException; 63*cdf0e10cSrcweir using com::sun::star::uno::UNO_QUERY; 64*cdf0e10cSrcweir using com::sun::star::uno::UNO_QUERY_THROW; 65*cdf0e10cSrcweir using com::sun::star::xml::dom::NodeType_TEXT_NODE; 66*cdf0e10cSrcweir using com::sun::star::xml::xpath::XPathObjectType_XPATH_UNDEFINED; 67*cdf0e10cSrcweir using namespace std; 68*cdf0e10cSrcweir 69*cdf0e10cSrcweir 70*cdf0e10cSrcweir 71*cdf0e10cSrcweir 72*cdf0e10cSrcweir namespace xforms 73*cdf0e10cSrcweir { 74*cdf0e10cSrcweir 75*cdf0e10cSrcweir PathExpression::PathExpression() 76*cdf0e10cSrcweir : ComputedExpression(), 77*cdf0e10cSrcweir maNodes() 78*cdf0e10cSrcweir { 79*cdf0e10cSrcweir } 80*cdf0e10cSrcweir 81*cdf0e10cSrcweir PathExpression::~PathExpression() 82*cdf0e10cSrcweir { 83*cdf0e10cSrcweir } 84*cdf0e10cSrcweir 85*cdf0e10cSrcweir 86*cdf0e10cSrcweir 87*cdf0e10cSrcweir void PathExpression::setExpression( const OUString& rExpression ) 88*cdf0e10cSrcweir { 89*cdf0e10cSrcweir // set new expression, and clear pre-computed results 90*cdf0e10cSrcweir ComputedExpression::setExpression( rExpression ); 91*cdf0e10cSrcweir 92*cdf0e10cSrcweir // check expression against regular expression to determine 93*cdf0e10cSrcweir // whether it contains only 'simple' (i.e. static) conditions. For 94*cdf0e10cSrcweir // now, we check whether it only contains number positions. 95*cdf0e10cSrcweir // (TODO: Only works for names containing only ASCII letters+digits.) 96*cdf0e10cSrcweir mbIsSimple = 97*cdf0e10cSrcweir _checkExpression( "( */@?[a-zA-Z0-9:]+( *\\[ *[0-9 ]+ *\\] *)?)+" ); 98*cdf0e10cSrcweir 99*cdf0e10cSrcweir maNodes.clear(); 100*cdf0e10cSrcweir } 101*cdf0e10cSrcweir 102*cdf0e10cSrcweir const rtl::OUString PathExpression::_getExpressionForEvaluation() const 103*cdf0e10cSrcweir { 104*cdf0e10cSrcweir OUString sExpr = ComputedExpression::_getExpressionForEvaluation(); 105*cdf0e10cSrcweir if( sExpr.getLength() == 0 ) 106*cdf0e10cSrcweir sExpr = OUSTRING("."); 107*cdf0e10cSrcweir return sExpr; 108*cdf0e10cSrcweir } 109*cdf0e10cSrcweir 110*cdf0e10cSrcweir bool PathExpression::evaluate( const EvaluationContext& rContext ) 111*cdf0e10cSrcweir { 112*cdf0e10cSrcweir // for simple expression we don't need to re-bind (if we were bound before) 113*cdf0e10cSrcweir // (we will evaluate empty expressions, since they are interpreted as ".") 114*cdf0e10cSrcweir if( mxResult.is() && isSimpleExpression() ) 115*cdf0e10cSrcweir return true; 116*cdf0e10cSrcweir 117*cdf0e10cSrcweir bool bResult = _evaluate( rContext, _getExpressionForEvaluation() ); 118*cdf0e10cSrcweir 119*cdf0e10cSrcweir // clear old result, and copy new 120*cdf0e10cSrcweir maNodes.clear(); 121*cdf0e10cSrcweir if( mxResult.is() ) 122*cdf0e10cSrcweir { 123*cdf0e10cSrcweir // copy node list 124*cdf0e10cSrcweir Reference<XNodeList> xNodeList = mxResult->getNodeList(); 125*cdf0e10cSrcweir OSL_ENSURE( xNodeList.is(), "empty object (instead of empty list)" ); 126*cdf0e10cSrcweir sal_Int32 nLength = xNodeList.is() ? xNodeList->getLength() : 0; 127*cdf0e10cSrcweir for( sal_Int32 n = 0; n < nLength; n++ ) 128*cdf0e10cSrcweir maNodes.push_back( xNodeList->item( n ) ); 129*cdf0e10cSrcweir } 130*cdf0e10cSrcweir 131*cdf0e10cSrcweir return bResult; 132*cdf0e10cSrcweir } 133*cdf0e10cSrcweir 134*cdf0e10cSrcweir 135*cdf0e10cSrcweir Reference<XNode> PathExpression::getNode() const 136*cdf0e10cSrcweir { 137*cdf0e10cSrcweir Reference<XNode> xResult; 138*cdf0e10cSrcweir if( ! maNodes.empty() ) 139*cdf0e10cSrcweir xResult = *maNodes.begin(); 140*cdf0e10cSrcweir return xResult; 141*cdf0e10cSrcweir } 142*cdf0e10cSrcweir 143*cdf0e10cSrcweir const PathExpression::NodeVector_t PathExpression::getNodeList() const 144*cdf0e10cSrcweir { 145*cdf0e10cSrcweir return maNodes; 146*cdf0e10cSrcweir } 147*cdf0e10cSrcweir 148*cdf0e10cSrcweir Reference<XNodeList> PathExpression::getXNodeList() const 149*cdf0e10cSrcweir { 150*cdf0e10cSrcweir return mxResult.is() ? mxResult->getNodeList() : Reference<XNodeList>(); 151*cdf0e10cSrcweir } 152*cdf0e10cSrcweir 153*cdf0e10cSrcweir 154*cdf0e10cSrcweir } // namespace xforms 155