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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /forms/source/xforms/pathexpression.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'forms/source/xforms/pathexpression.cxx')
-rw-r--r--forms/source/xforms/pathexpression.cxx113
1 files changed, 113 insertions, 0 deletions
diff --git a/forms/source/xforms/pathexpression.cxx b/forms/source/xforms/pathexpression.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+
+#include "pathexpression.hxx"
+#include "unohelper.hxx"
+#include "evaluationcontext.hxx"
+
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/xpath/XXPathObject.hpp>
+#include <osl/diagnose.h>
+
+#include <algorithm>
+
+
+using com::sun::star::uno::Reference;
+using com::sun::star::xml::dom::XNode;
+using com::sun::star::xml::dom::XNodeList;
+
+
+namespace xforms
+{
+
+PathExpression::PathExpression()
+{
+}
+
+PathExpression::~PathExpression()
+{
+}
+
+
+void PathExpression::setExpression( const OUString& rExpression )
+{
+ // set new expression, and clear pre-computed results
+ ComputedExpression::setExpression( rExpression );
+
+ // check expression against regular expression to determine
+ // whether it contains only 'simple' (i.e. static) conditions. For
+ // now, we check whether it only contains number positions.
+ // (TODO: Only works for names containing only ASCII letters+digits.)
+ mbIsSimple =
+ _checkExpression( "( */@?[a-zA-Z0-9:]+( *\\[ *[0-9 ]+ *\\] *)?)+" );
+
+ maNodes.clear();
+}
+
+OUString PathExpression::_getExpressionForEvaluation() const
+{
+ OUString sExpr = ComputedExpression::_getExpressionForEvaluation();
+ if( sExpr.isEmpty())
+ sExpr = ".";
+ return sExpr;
+}
+
+void PathExpression::evaluate( const EvaluationContext& rContext )
+{
+ // for simple expression we don't need to re-bind (if we were bound before)
+ // (we will evaluate empty expressions, since they are interpreted as ".")
+ if( mxResult.is() && isSimpleExpression() )
+ return;
+
+ _evaluate( rContext, _getExpressionForEvaluation() );
+
+ // clear old result, and copy new
+ maNodes.clear();
+ if( mxResult.is() )
+ {
+ // copy node list
+ Reference<XNodeList> xNodeList = mxResult->getNodeList();
+ OSL_ENSURE( xNodeList.is(), "empty object (instead of empty list)" );
+ sal_Int32 nLength = xNodeList.is() ? xNodeList->getLength() : 0;
+ for( sal_Int32 n = 0; n < nLength; n++ )
+ maNodes.push_back( xNodeList->item( n ) );
+ }
+}
+
+
+Reference<XNode> PathExpression::getNode() const
+{
+ Reference<XNode> xResult;
+ if( ! maNodes.empty() )
+ xResult = *maNodes.begin();
+ return xResult;
+}
+
+
+Reference<XNodeList> PathExpression::getXNodeList() const
+{
+ return mxResult.is() ? mxResult->getNodeList() : Reference<XNodeList>();
+}
+
+
+} // namespace xforms
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */