001/*
002    Licensed to the Apache Software Foundation (ASF) under one
003    or more contributor license agreements.  See the NOTICE file
004    distributed with this work for additional information
005    regarding copyright ownership.  The ASF licenses this file
006    to you under the Apache License, Version 2.0 (the
007    "License"); you may not use this file except in compliance
008    with the License.  You may obtain a copy of the License at
009
010       http://www.apache.org/licenses/LICENSE-2.0
011
012    Unless required by applicable law or agreed to in writing,
013    software distributed under the License is distributed on an
014    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015    KIND, either express or implied.  See the License for the
016    specific language governing permissions and limitations
017    under the License.
018 */
019package org.apache.wiki.markdown.extensions.jspwikilinks.postprocessor;
020
021import com.vladsch.flexmark.util.ast.Node;
022import com.vladsch.flexmark.util.ast.NodeTracker;
023import org.apache.log4j.Logger;
024import org.apache.wiki.api.core.Context;
025import org.apache.wiki.i18n.InternationalizationManager;
026import org.apache.wiki.markdown.nodes.JSPWikiLink;
027import org.apache.wiki.preferences.Preferences;
028import org.apache.wiki.variables.VariableManager;
029
030import java.text.MessageFormat;
031import java.util.ResourceBundle;
032
033
034/**
035 * {@link NodePostProcessorState} which further post processes metadata links.
036 */
037public class MetadataLinkNodePostProcessorState implements NodePostProcessorState< JSPWikiLink > {
038
039    private static final Logger LOG = Logger.getLogger( MetadataLinkNodePostProcessorState.class );
040    private final Context wikiContext;
041    private final boolean m_wysiwygEditorMode;
042
043    public MetadataLinkNodePostProcessorState( final Context wikiContext ) {
044        this.wikiContext = wikiContext;
045        final Boolean wysiwygVariable = wikiContext.getVariable( Context.VAR_WYSIWYG_EDITOR_MODE );
046        m_wysiwygEditorMode = wysiwygVariable != null ? wysiwygVariable : false;
047    }
048
049    /**
050     * {@inheritDoc}
051     *
052     * @see NodePostProcessorState#process(NodeTracker, Node) 
053     */
054    @Override
055    public void process( final NodeTracker state, final JSPWikiLink link ) {
056        final String metadataLine = NodePostProcessorStateCommonOperations.inlineLinkTextOnWysiwyg( state, link, m_wysiwygEditorMode );
057        try {
058            final String args = metadataLine.substring( metadataLine.indexOf(' '), metadataLine.length() - 1 );
059            String name = args.substring( 0, args.indexOf( '=' ) );
060            String val = args.substring( args.indexOf( '=' ) + 1 );
061
062            name = name.trim();
063            val = val.trim();
064
065            if( val.startsWith( "'" ) ) {
066                val = val.substring( 1 );
067            }
068            if( val.endsWith( "'" ) ) {
069                val = val.substring( 0, val.length()-1 );
070            }
071
072            LOG.debug( "page=" + wikiContext.getRealPage().getName() + " SET name='" + name + "', value='" + val + "'" );
073
074            if( name.length() > 0 && val.length() > 0 ) {
075                val = wikiContext.getEngine().getManager( VariableManager.class ).expandVariables( wikiContext, val );
076                wikiContext.getPage().setAttribute( name, val );
077                link.unlink();
078                state.nodeRemoved( link );
079            }
080        } catch( final Exception e ) {
081            final ResourceBundle rb = Preferences.getBundle( wikiContext, InternationalizationManager.CORE_BUNDLE );
082            NodePostProcessorStateCommonOperations.makeError( state, link,
083                                                              MessageFormat.format( rb.getString( "markupparser.error.invalidset" ), metadataLine ) );
084        }
085    }
086
087}