| /* |
| 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 |
| |
| Unless required by applicable law or agreed to in writing, |
| software distributed under the License is distributed on an |
| "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the |
| specific language governing permissions and limitations |
| under the License. |
| */ |
| package org.apache.wiki.plugin; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.log4j.Logger; |
| import org.apache.oro.text.GlobCompiler; |
| import org.apache.oro.text.regex.MalformedPatternException; |
| import org.apache.oro.text.regex.Pattern; |
| import org.apache.oro.text.regex.PatternCompiler; |
| import org.apache.oro.text.regex.PatternMatcher; |
| import org.apache.oro.text.regex.Perl5Matcher; |
| import org.apache.wiki.StringTransmutator; |
| import org.apache.wiki.WikiContext; |
| import org.apache.wiki.WikiEngine; |
| import org.apache.wiki.WikiPage; |
| import org.apache.wiki.api.exceptions.PluginException; |
| import org.apache.wiki.api.plugin.WikiPlugin; |
| import org.apache.wiki.pages.PageSorter; |
| import org.apache.wiki.parser.MarkupParser; |
| import org.apache.wiki.parser.WikiDocument; |
| import org.apache.wiki.preferences.Preferences; |
| import org.apache.wiki.preferences.Preferences.TimeFormat; |
| import org.apache.wiki.render.RenderingManager; |
| import org.apache.wiki.util.TextUtil; |
| import org.apache.wiki.util.comparators.CollatorComparator; |
| import org.apache.wiki.util.comparators.HumanComparator; |
| import org.apache.wiki.util.comparators.JavaNaturalComparator; |
| import org.apache.wiki.util.comparators.LocaleComparator; |
| |
| import java.io.IOException; |
| import java.text.Collator; |
| import java.text.ParseException; |
| import java.text.RuleBasedCollator; |
| import java.text.SimpleDateFormat; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Date; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| /** |
| * This is a base class for all plugins using referral things. |
| * |
| * <p>Parameters (also valid for all subclasses of this class) : </p> |
| * <ul> |
| * <li><b>maxwidth</b> - maximum width of generated links</li> |
| * <li><b>separator</b> - separator between generated links (wikitext)</li> |
| * <li><b>after</b> - output after the link</li> |
| * <li><b>before</b> - output before the link</li> |
| * <li><b>exclude</b> - a regular expression of pages to exclude from the list. </li> |
| * <li><b>include</b> - a regular expression of pages to include in the list. </li> |
| * <li><b>show</b> - value is either "pages" (default) or "count". When "count" is specified, shows only the count |
| * of pages which match. (since 2.8)</li> |
| * <li><b>showLastModified</b> - When show=count, shows also the last modified date. (since 2.8)</li> |
| * <li><b>sortOrder</b> - specifies the sort order for the resulting list. Options are |
| * 'human', 'java', 'locale' or a <code>RuleBasedCollator</code> rule string. (since 2.8.3)</li> |
| * </ul> |
| * |
| */ |
| public abstract class AbstractReferralPlugin implements WikiPlugin |
| { |
| private static Logger log = Logger.getLogger( AbstractReferralPlugin.class ); |
| |
| /** Magic value for rendering all items. */ |
| public static final int ALL_ITEMS = -1; |
| |
| /** Parameter name for setting the maximum width. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_MAXWIDTH = "maxwidth"; |
| |
| /** Parameter name for the separator string. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_SEPARATOR = "separator"; |
| |
| /** Parameter name for the output after the link. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_AFTER = "after"; |
| |
| /** Parameter name for the output before the link. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_BEFORE = "before"; |
| |
| /** Parameter name for setting the list of excluded patterns. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_EXCLUDE = "exclude"; |
| |
| /** Parameter name for setting the list of included patterns. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_INCLUDE = "include"; |
| |
| /** Parameter name for the show parameter. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_SHOW = "show"; |
| |
| /** Parameter name for setting show to "pages". Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_SHOW_VALUE_PAGES = "pages"; |
| |
| /** Parameter name for setting show to "count". Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_SHOW_VALUE_COUNT = "count"; |
| |
| /** Parameter name for showing the last modification count. Value is <tt>{@value}</tt>. */ |
| public static final String PARAM_LASTMODIFIED = "showLastModified"; |
| |
| /** Parameter name for specifying the sort order. Value is <tt>{@value}</tt>. */ |
| protected static final String PARAM_SORTORDER = "sortOrder"; |
| protected static final String PARAM_SORTORDER_HUMAN = "human"; |
| protected static final String PARAM_SORTORDER_JAVA = "java"; |
| protected static final String PARAM_SORTORDER_LOCALE = "locale"; |
| |
| protected int m_maxwidth = Integer.MAX_VALUE; |
| protected String m_before = ""; // null not blank |
| protected String m_separator = ""; // null not blank |
| protected String m_after = "\\\\"; |
| |
| protected Pattern[] m_exclude; |
| protected Pattern[] m_include; |
| protected PageSorter m_sorter; |
| |
| protected String m_show = "pages"; |
| protected boolean m_lastModified=false; |
| // the last modified date of the page that has been last modified: |
| protected Date m_dateLastModified = new Date(0); |
| protected SimpleDateFormat m_dateFormat; |
| |
| protected WikiEngine m_engine; |
| |
| /** |
| * @param context the wiki context |
| * @param params parameters for initializing the plugin |
| * @throws PluginException if any of the plugin parameters are malformed |
| */ |
| // FIXME: The compiled pattern strings should really be cached somehow. |
| public void initialize( WikiContext context, Map<String, String> params ) |
| throws PluginException |
| { |
| m_dateFormat = Preferences.getDateFormat( context, TimeFormat.DATETIME ); |
| m_engine = context.getEngine(); |
| m_maxwidth = TextUtil.parseIntParameter( params.get( PARAM_MAXWIDTH ), Integer.MAX_VALUE ); |
| if( m_maxwidth < 0 ) m_maxwidth = 0; |
| |
| String s = params.get( PARAM_SEPARATOR ); |
| |
| if( s != null ) |
| { |
| m_separator = TextUtil.replaceEntities( s ); |
| // pre-2.1.145 there was a separator at the end of the list |
| // if they set the parameters, we use the new format of |
| // before Item1 after separator before Item2 after separator before Item3 after |
| m_after = ""; |
| } |
| |
| s = params.get( PARAM_BEFORE ); |
| |
| if( s != null ) |
| { |
| m_before = s; |
| } |
| |
| s = params.get( PARAM_AFTER ); |
| |
| if( s != null ) |
| { |
| m_after = s; |
| } |
| |
| s = params.get( PARAM_EXCLUDE ); |
| |
| if( s != null ) |
| { |
| try |
| { |
| PatternCompiler pc = new GlobCompiler(); |
| |
| String[] ptrns = StringUtils.split( s, "," ); |
| |
| m_exclude = new Pattern[ptrns.length]; |
| |
| for( int i = 0; i < ptrns.length; i++ ) |
| { |
| m_exclude[i] = pc.compile( ptrns[i] ); |
| } |
| } |
| catch( MalformedPatternException e ) |
| { |
| throw new PluginException("Exclude-parameter has a malformed pattern: "+e.getMessage()); |
| } |
| } |
| |
| // TODO: Cut-n-paste, refactor |
| s = params.get( PARAM_INCLUDE ); |
| |
| if( s != null ) |
| { |
| try |
| { |
| PatternCompiler pc = new GlobCompiler(); |
| |
| String[] ptrns = StringUtils.split( s, "," ); |
| |
| m_include = new Pattern[ptrns.length]; |
| |
| for( int i = 0; i < ptrns.length; i++ ) |
| { |
| m_include[i] = pc.compile( ptrns[i] ); |
| } |
| } |
| catch( MalformedPatternException e ) |
| { |
| throw new PluginException("Include-parameter has a malformed pattern: "+e.getMessage()); |
| } |
| } |
| |
| // log.debug( "Requested maximum width is "+m_maxwidth ); |
| s = params.get(PARAM_SHOW); |
| |
| if( s != null ) |
| { |
| if( s.equalsIgnoreCase( "count" ) ) |
| { |
| m_show = "count"; |
| } |
| } |
| |
| s = params.get( PARAM_LASTMODIFIED ); |
| |
| if( s != null ) |
| { |
| if( s.equalsIgnoreCase( "true" ) ) |
| { |
| if( m_show.equals( "count" ) ) |
| { |
| m_lastModified = true; |
| } |
| else |
| { |
| throw new PluginException( "showLastModified=true is only valid if show=count is also specified" ); |
| } |
| } |
| } |
| |
| initSorter( context, params ); |
| } |
| |
| protected List< WikiPage > filterWikiPageCollection( Collection< WikiPage > pages ) { |
| List< String > pageNames = filterCollection( pages.stream() |
| .map( page -> page.getName() ) |
| .collect( Collectors.toList() ) ); |
| return pages.stream() |
| .filter( wikiPage -> pageNames.contains( wikiPage.getName() ) ) |
| .collect( Collectors.toList() ); |
| } |
| |
| /** |
| * Filters a collection according to the include and exclude parameters. |
| * |
| * @param c The collection to filter. |
| * @return A filtered collection. |
| */ |
| protected List< String > filterCollection( Collection< String > c ) |
| { |
| ArrayList< String > result = new ArrayList<>(); |
| |
| PatternMatcher pm = new Perl5Matcher(); |
| |
| for( Iterator< String > i = c.iterator(); i.hasNext(); ) |
| { |
| String pageName = i.next(); |
| |
| // |
| // If include parameter exists, then by default we include only those |
| // pages in it (excluding the ones in the exclude pattern list). |
| // |
| // include='*' means the same as no include. |
| // |
| boolean includeThis = m_include == null; |
| |
| if( m_include != null ) |
| { |
| for( int j = 0; j < m_include.length; j++ ) |
| { |
| if( pm.matches( pageName, m_include[j] ) ) |
| { |
| includeThis = true; |
| break; |
| } |
| } |
| } |
| |
| if( m_exclude != null ) |
| { |
| for( int j = 0; j < m_exclude.length; j++ ) |
| { |
| if( pm.matches( pageName, m_exclude[j] ) ) |
| { |
| includeThis = false; |
| break; // The inner loop, continue on the next item |
| } |
| } |
| } |
| |
| if( includeThis ) |
| { |
| result.add( pageName ); |
| // |
| // if we want to show the last modified date of the most recently change page, we keep a "high watermark" here: |
| WikiPage page = null; |
| if( m_lastModified ) |
| { |
| page = m_engine.getPageManager().getPage( pageName ); |
| if( page != null ) |
| { |
| Date lastModPage = page.getLastModified(); |
| if( log.isDebugEnabled() ) |
| { |
| log.debug( "lastModified Date of page " + pageName + " : " + m_dateLastModified ); |
| } |
| if( lastModPage.after( m_dateLastModified ) ) |
| { |
| m_dateLastModified = lastModPage; |
| } |
| } |
| |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Filters and sorts a collection according to the include and exclude parameters. |
| * |
| * @param c The collection to filter. |
| * @return A filtered and sorted collection. |
| */ |
| protected List< String > filterAndSortCollection( Collection< String > c ) { |
| List< String > result = filterCollection( c ); |
| result.sort( m_sorter ); |
| return result; |
| } |
| |
| /** |
| * Makes WikiText from a Collection. |
| * |
| * @param links Collection to make into WikiText. |
| * @param separator Separator string to use. |
| * @param numItems How many items to show. |
| * @return The WikiText |
| */ |
| protected String wikitizeCollection( Collection< String > links, String separator, int numItems ) |
| { |
| if( links == null || links.isEmpty() ) |
| return ""; |
| |
| StringBuilder output = new StringBuilder(); |
| |
| Iterator< String > it = links.iterator(); |
| int count = 0; |
| |
| // |
| // The output will be B Item[1] A S B Item[2] A S B Item[3] A |
| // |
| while( it.hasNext() && ( (count < numItems) || ( numItems == ALL_ITEMS ) ) ) |
| { |
| String value = it.next(); |
| |
| if( count > 0 ) |
| { |
| output.append( m_after ); |
| output.append( m_separator ); |
| } |
| |
| output.append( m_before ); |
| |
| // Make a Wiki markup link. See TranslatorReader. |
| output.append( "[" + m_engine.getRenderingManager().beautifyTitle(value) + "|" + value + "]" ); |
| count++; |
| } |
| |
| // |
| // Output final item - if there have been none, no "after" is printed |
| // |
| if( count > 0 ) output.append( m_after ); |
| |
| return output.toString(); |
| } |
| |
| /** |
| * Makes HTML with common parameters. |
| * |
| * @param context The WikiContext |
| * @param wikitext The wikitext to render |
| * @return HTML |
| * @since 1.6.4 |
| */ |
| protected String makeHTML( WikiContext context, String wikitext ) |
| { |
| String result = ""; |
| |
| RenderingManager mgr = m_engine.getRenderingManager(); |
| |
| try |
| { |
| MarkupParser parser = mgr.getParser(context, wikitext); |
| |
| parser.addLinkTransmutator( new CutMutator(m_maxwidth) ); |
| parser.enableImageInlining( false ); |
| |
| WikiDocument doc = parser.parse(); |
| |
| result = mgr.getHTML( context, doc ); |
| } |
| catch( IOException e ) |
| { |
| log.error("Failed to convert page data to HTML", e); |
| } |
| |
| return result; |
| } |
| |
| /** |
| * A simple class that just cuts a String to a maximum |
| * length, adding three dots after the cutpoint. |
| */ |
| private static class CutMutator implements StringTransmutator |
| { |
| private int m_length; |
| |
| public CutMutator( int length ) |
| { |
| m_length = length; |
| } |
| |
| public String mutate( WikiContext context, String text ) |
| { |
| if( text.length() > m_length ) |
| { |
| return text.substring( 0, m_length ) + "..."; |
| } |
| |
| return text; |
| } |
| } |
| |
| /** |
| * Helper method to initialize the comparator for this page. |
| */ |
| private void initSorter( WikiContext context, Map< String, String > params ) { |
| String order = params.get( PARAM_SORTORDER ); |
| if( order == null || order.length() == 0 ) { |
| // Use the configured comparator |
| m_sorter = context.getEngine().getPageManager().getPageSorter(); |
| } else if( order.equalsIgnoreCase( PARAM_SORTORDER_JAVA ) ) { |
| // use Java "natural" ordering |
| m_sorter = new PageSorter( JavaNaturalComparator.DEFAULT_JAVA_COMPARATOR ); |
| } else if( order.equalsIgnoreCase( PARAM_SORTORDER_LOCALE ) ) { |
| // use this locale's ordering |
| m_sorter = new PageSorter( LocaleComparator.DEFAULT_LOCALE_COMPARATOR ); |
| } else if( order.equalsIgnoreCase( PARAM_SORTORDER_HUMAN ) ) { |
| // use human ordering |
| m_sorter = new PageSorter( HumanComparator.DEFAULT_HUMAN_COMPARATOR ); |
| } else { |
| try |
| { |
| Collator collator = new RuleBasedCollator( order ); |
| collator.setStrength( Collator.PRIMARY ); |
| m_sorter = new PageSorter( new CollatorComparator( collator ) ); |
| } |
| catch( ParseException pe ) |
| { |
| log.info( "Failed to parse requested collator - using default ordering", pe ); |
| m_sorter = context.getEngine().getPageManager().getPageSorter(); |
| } |
| } |
| } |
| |
| } |
