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package org.apache.maven.doxia.module.twiki;
/*
* 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.
*/
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.Stack;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.html.HTML.Attribute;
import javax.swing.text.html.HTML.Tag;
import org.apache.maven.doxia.sink.AbstractTextSink;
import org.apache.maven.doxia.sink.SinkEventAttributeSet;
import org.apache.maven.doxia.sink.SinkEventAttributes;
import org.apache.maven.doxia.sink.SinkUtils;
import org.apache.maven.doxia.util.HtmlTools;
import org.codehaus.plexus.util.StringUtils;
/**
* TWiki Sink implementation.
*
* Note: The encoding used is UTF-8.
*
* @author Vincent Siveton
* @version $Id: TWikiSink.java 1438269 2013-01-24 23:47:50Z olamy $
* @since 1.0
*/
public class TWikiSink
extends AbstractTextSink
implements TWikiMarkup
{
/** The writer to use. */
private final PrintWriter out;
/** The writer to use. */
private StringWriter writer;
/** An indication on if we're in bold mode. */
private boolean boldFlag;
/** An indication on if we're in bold italic or monospaced mode. */
private boolean boldItalicOrMonodpacedFlag;
/** An indication on if we're in head mode. */
private boolean headFlag;
private int levelList = 0;
/** listStyles. */
private final Stack listStyles;
/**
* Constructor, initialize the Writer and the variables.
*
* @param writer not null writer to write the result. Should be an UTF-8 Writer.
* You could use newWriter methods from {@link org.codehaus.plexus.util.WriterFactory}.
*/
protected TWikiSink( Writer writer )
{
this.out = new PrintWriter( writer );
this.listStyles = new Stack();
init();
}
/** {@inheritDoc} */
public void anchor( String name )
{
write( EOL );
write( ANCHOR_MARKUP + name );
}
/** {@inheritDoc} */
public void anchor( String name, SinkEventAttributes attributes )
{
anchor( name );
}
/**
* Not used.
* {@inheritDoc}
*/
public void anchor_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void author()
{
// nop
}
/** {@inheritDoc} */
public void author( SinkEventAttributes attributes )
{
author();
}
/**
* Not used.
* {@inheritDoc}
*/
public void author_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void body()
{
// nop
}
/** {@inheritDoc} */
public void body( SinkEventAttributes attributes )
{
body();
}
/**
* Not used.
* {@inheritDoc}
*/
public void body_()
{
// nop
}
/** {@inheritDoc} */
public void bold()
{
boldFlag = true;
write( BOLD_START_MARKUP );
}
/** {@inheritDoc} */
public void bold_()
{
boldFlag = false;
if ( !boldItalicOrMonodpacedFlag )
{
write( BOLD_END_MARKUP );
}
boldItalicOrMonodpacedFlag = false;
}
/**
* Not used.
* {@inheritDoc}
*/
public void comment( String comment )
{
// nop
}
/** {@inheritDoc} */
public void close()
{
out.write( writer.toString() );
out.close();
init();
}
/**
* Not used.
* {@inheritDoc}
*/
public void date()
{
// nop
}
/** {@inheritDoc} */
public void date( SinkEventAttributes attributes )
{
date();
}
/**
* Not used.
* {@inheritDoc}
*/
public void date_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void definedTerm()
{
// nop
}
/** {@inheritDoc} */
public void definedTerm( SinkEventAttributes attributes )
{
definedTerm();
}
/**
* Not used.
* {@inheritDoc}
*/
public void definedTerm_()
{
// nop
}
/** {@inheritDoc} */
public void definition()
{
write( DEFINITION_LIST_DEFINITION_MARKUP );
}
/** {@inheritDoc} */
public void definition( SinkEventAttributes attributes )
{
definition();
}
/** {@inheritDoc} */
public void definition_()
{
writeEOL();
}
/**
* Not used.
* {@inheritDoc}
*/
public void definitionList()
{
// nop
}
/** {@inheritDoc} */
public void definitionList( SinkEventAttributes attributes )
{
definitionList();
}
/**
* Not used.
* {@inheritDoc}
*/
public void definitionList_()
{
// nop
}
/** {@inheritDoc} */
public void definitionListItem()
{
write( DEFINITION_LIST_ITEM_MARKUP );
}
/** {@inheritDoc} */
public void definitionListItem( SinkEventAttributes attributes )
{
definitionListItem();
}
/**
* Not used.
* {@inheritDoc}
*/
public void definitionListItem_()
{
// nop
}
/** {@inheritDoc} */
public void figure()
{
write( String.valueOf( LESS_THAN ) + Tag.IMG.toString() + SPACE );
}
/** {@inheritDoc} */
public void figure( SinkEventAttributes attributes )
{
figure();
}
/**
* Not used.
* {@inheritDoc}
*/
public void figure_()
{
write( SLASH + String.valueOf( GREATER_THAN ) );
}
/**
* Not used.
* {@inheritDoc}
*/
public void figureCaption()
{
write( Attribute.ALT.toString() + EQUAL + QUOTE );
}
/** {@inheritDoc} */
public void figureCaption( SinkEventAttributes attributes )
{
figureCaption();
}
/**
* Not used.
* {@inheritDoc}
*/
public void figureCaption_()
{
write( QUOTE + String.valueOf( SPACE ) );
}
/** {@inheritDoc} */
public void figureGraphics( String name )
{
write( Attribute.SRC.toString() + EQUAL + QUOTE + name + QUOTE + String.valueOf( SPACE ) );
}
/** {@inheritDoc} */
public void figureGraphics( String src, SinkEventAttributes attributes )
{
figureGraphics( src );
}
/** {@inheritDoc} */
public void flush()
{
close();
writer.flush();
}
/** {@inheritDoc} */
public void head()
{
init();
headFlag = true;
}
/** {@inheritDoc} */
public void head( SinkEventAttributes attributes )
{
head();
}
/** {@inheritDoc} */
public void head_()
{
headFlag = false;
}
/** {@inheritDoc} */
public void horizontalRule()
{
writeEOL( true );
write( HORIZONTAL_RULE_MARKUP );
writeEOL( true );
}
/** {@inheritDoc} */
public void horizontalRule( SinkEventAttributes attributes )
{
horizontalRule();
}
/** {@inheritDoc} */
public void italic()
{
if ( boldFlag )
{
boldItalicOrMonodpacedFlag = true;
String tmp = writer.toString();
writer = new StringWriter();
writer.write( tmp.substring( 0, tmp.length() - 1 ) );
write( BOLD_ITALIC_START_MARKUP );
}
else
{
write( ITALIC_START_MARKUP );
}
}
/** {@inheritDoc} */
public void italic_()
{
if ( boldFlag )
{
write( BOLD_ITALIC_END_MARKUP );
}
else
{
write( ITALIC_END_MARKUP );
}
}
/**
* Not used.
* {@inheritDoc}
*/
public void lineBreak()
{
// nop
}
/** {@inheritDoc} */
public void lineBreak( SinkEventAttributes attributes )
{
lineBreak();
}
/** {@inheritDoc} */
public void link( String name )
{
write( LINK_START_MARKUP + name + LINK_MIDDLE_MARKUP );
}
/** {@inheritDoc} */
public void link( String name, SinkEventAttributes attributes )
{
link( name );
}
/** {@inheritDoc} */
public void link_()
{
write( LINK_END_MARKUP );
}
/** {@inheritDoc} */
public void list()
{
if ( !writer.toString().endsWith( EOL + EOL ) )
{
writeEOL( true );
}
levelList++;
}
/** {@inheritDoc} */
public void list( SinkEventAttributes attributes )
{
list();
}
/** {@inheritDoc} */
public void list_()
{
levelList--;
}
/** {@inheritDoc} */
public void listItem()
{
String indent = StringUtils.repeat( THREE_SPACES_MARKUP, levelList );
write( indent + LIST_ITEM_MARKUP );
}
/** {@inheritDoc} */
public void listItem( SinkEventAttributes attributes )
{
listItem();
}
/** {@inheritDoc} */
public void listItem_()
{
writeEOL( true );
}
/** {@inheritDoc} */
public void monospaced()
{
if ( boldFlag )
{
boldItalicOrMonodpacedFlag = true;
String tmp = writer.toString();
writer = new StringWriter();
writer.write( tmp.substring( 0, tmp.length() - 1 ) );
write( BOLD_MONOSPACED_START_MARKUP );
}
else
{
write( MONOSPACED_START_MARKUP );
}
}
/** {@inheritDoc} */
public void monospaced_()
{
if ( boldFlag )
{
write( BOLD_MONOSPACED_END_MARKUP );
}
else
{
write( MONOSPACED_END_MARKUP );
}
}
/**
* Not used.
* {@inheritDoc}
*/
public void nonBreakingSpace()
{
// nop
}
/** {@inheritDoc} */
public void numberedList( int numbering )
{
levelList++;
String style;
switch ( numbering )
{
case NUMBERING_UPPER_ALPHA:
style = NUMBERING_UPPER_ALPHA_MARKUP;
break;
case NUMBERING_LOWER_ALPHA:
style = NUMBERING_LOWER_ALPHA_MARKUP;
break;
case NUMBERING_UPPER_ROMAN:
style = NUMBERING_UPPER_ROMAN_MARKUP;
break;
case NUMBERING_LOWER_ROMAN:
style = NUMBERING_LOWER_ROMAN_MARKUP;
break;
case NUMBERING_DECIMAL:
default:
style = NUMBERING_MARKUP;
}
listStyles.push( style );
}
/** {@inheritDoc} */
public void numberedList( int numbering, SinkEventAttributes attributes )
{
numberedList( numbering );
}
/** {@inheritDoc} */
public void numberedList_()
{
levelList--;
listStyles.pop();
}
/** {@inheritDoc} */
public void numberedListItem()
{
writeEOL( true );
String style = (String) listStyles.peek();
String indent = StringUtils.repeat( THREE_SPACES_MARKUP, levelList );
write( indent + style + SPACE );
}
/** {@inheritDoc} */
public void numberedListItem( SinkEventAttributes attributes )
{
numberedListItem();
}
/** {@inheritDoc} */
public void numberedListItem_()
{
writeEOL( true );
}
/**
* Not used.
* {@inheritDoc}
*/
public void pageBreak()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void paragraph()
{
// nop
}
/** {@inheritDoc} */
public void paragraph( SinkEventAttributes attributes )
{
paragraph();
}
/** {@inheritDoc} */
public void paragraph_()
{
writeEOL( true );
writeEOL();
}
/**
* Not used.
* {@inheritDoc}
*/
public void rawText( String text )
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section( int level, SinkEventAttributes attributes )
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section1()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section1_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section2()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section2_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section3()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section3_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section4()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section4_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section5()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section5_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void section_( int level )
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void sectionTitle()
{
// nop
}
/** {@inheritDoc} */
public void sectionTitle( int level, SinkEventAttributes attributes )
{
if ( level > 0 && level < 6 )
{
write( StringUtils.repeat( "-", 3 ) + StringUtils.repeat( "+", level ) );
}
}
/** {@inheritDoc} */
public void sectionTitle1()
{
sectionTitle( 1, null );
}
/** {@inheritDoc} */
public void sectionTitle1_()
{
sectionTitle_( 1 );
}
/** {@inheritDoc} */
public void sectionTitle2()
{
sectionTitle( 2, null );
}
/** {@inheritDoc} */
public void sectionTitle2_()
{
sectionTitle_( 2 );
}
/** {@inheritDoc} */
public void sectionTitle3()
{
sectionTitle( 3, null );
}
/** {@inheritDoc} */
public void sectionTitle3_()
{
sectionTitle_( 3 );
}
/** {@inheritDoc} */
public void sectionTitle4()
{
sectionTitle( 4, null );
}
/** {@inheritDoc} */
public void sectionTitle4_()
{
sectionTitle_( 4 );
}
/** {@inheritDoc} */
public void sectionTitle5()
{
sectionTitle( 5, null );
}
/** {@inheritDoc} */
public void sectionTitle5_()
{
sectionTitle_( 5 );
}
/**
* Not used.
* {@inheritDoc}
*/
public void sectionTitle_()
{
// nop
}
/** {@inheritDoc} */
public void sectionTitle_( int level )
{
writeEOL( true );
writeEOL();
}
/**
* Not used.
* {@inheritDoc}
*/
public void table()
{
// nop
}
/** {@inheritDoc} */
public void table( SinkEventAttributes attributes )
{
table();
}
/**
* Not used.
* {@inheritDoc}
*/
public void table_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void tableCaption()
{
// nop
}
/** {@inheritDoc} */
public void tableCaption( SinkEventAttributes attributes )
{
tableCaption();
}
/**
* Not used.
* {@inheritDoc}
*/
public void tableCaption_()
{
// nop
}
/** {@inheritDoc} */
public void tableCell()
{
write( " " );
}
/** {@inheritDoc} */
public void tableCell( SinkEventAttributes attributes )
{
tableCell();
}
/** {@inheritDoc} */
public void tableCell( String width )
{
tableCell();
}
/** {@inheritDoc} */
public void tableCell_()
{
write( TABLE_CELL_MARKUP );
}
/** {@inheritDoc} */
public void tableHeaderCell()
{
write( TABLE_CELL_HEADER_START_MARKUP );
}
/** {@inheritDoc} */
public void tableHeaderCell( SinkEventAttributes attributes )
{
tableHeaderCell();
}
/** {@inheritDoc} */
public void tableHeaderCell( String width )
{
tableHeaderCell();
}
/** {@inheritDoc} */
public void tableHeaderCell_()
{
write( TABLE_CELL_HEADER_END_MARKUP );
}
/** {@inheritDoc} */
public void tableRow()
{
write( TABLE_ROW_MARKUP );
}
/** {@inheritDoc} */
public void tableRow( SinkEventAttributes attributes )
{
tableRow();
}
/** {@inheritDoc} */
public void tableRow_()
{
writeEOL( true );
}
/**
* Not used.
* {@inheritDoc}
*/
public void tableRows( int[] justification, boolean grid )
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void tableRows_()
{
// nop
}
/** {@inheritDoc} */
public void text( String text )
{
if ( headFlag )
{
return;
}
content( text );
}
/** {@inheritDoc} */
public void text( String text, SinkEventAttributes attributes )
{
if ( attributes == null )
{
text( text );
}
else
{
if ( attributes.containsAttribute( SinkEventAttributes.DECORATION, "underline" ) )
{
writeStartTag( Tag.U );
}
if ( attributes.containsAttribute( SinkEventAttributes.DECORATION, "line-through" ) )
{
writeStartTag( Tag.S );
}
if ( attributes.containsAttribute( SinkEventAttributes.VALIGN, "sub" ) )
{
writeStartTag( Tag.SUB );
}
if ( attributes.containsAttribute( SinkEventAttributes.VALIGN, "sup" ) )
{
writeStartTag( Tag.SUP );
}
text( text );
if ( attributes.containsAttribute( SinkEventAttributes.VALIGN, "sup" ) )
{
writeEndTag( Tag.SUP );
}
if ( attributes.containsAttribute( SinkEventAttributes.VALIGN, "sub" ) )
{
writeEndTag( Tag.SUB );
}
if ( attributes.containsAttribute( SinkEventAttributes.DECORATION, "line-through" ) )
{
writeEndTag( Tag.S );
}
if ( attributes.containsAttribute( SinkEventAttributes.DECORATION, "underline" ) )
{
writeEndTag( Tag.U );
}
}
}
/**
* Not used.
* {@inheritDoc}
*/
public void title()
{
// nop
}
/** {@inheritDoc} */
public void title( SinkEventAttributes attributes )
{
title();
}
/**
* Not used.
* {@inheritDoc}
*/
public void title_()
{
// nop
}
/**
* Not used.
* {@inheritDoc}
*/
public void unknown( String name, Object[] requiredParams, SinkEventAttributes attributes )
{
// nop
}
/** {@inheritDoc} */
public void verbatim( boolean boxed )
{
SinkEventAttributeSet att = new SinkEventAttributeSet();
if ( boxed )
{
att.addAttribute( SinkEventAttributes.DECORATION, "boxed" );
}
verbatim( att );
}
/** {@inheritDoc} */
public void verbatim( SinkEventAttributes attributes )
{
MutableAttributeSet atts = SinkUtils.filterAttributes( attributes, SinkUtils.SINK_VERBATIM_ATTRIBUTES );
if ( atts == null )
{
atts = new SinkEventAttributeSet();
}
boolean boxed = false;
if ( atts.isDefined( SinkEventAttributes.DECORATION ) )
{
boxed = "boxed".equals( atts.getAttribute( SinkEventAttributes.DECORATION ).toString() );
}
if ( boxed )
{
atts.addAttribute( Attribute.CLASS, "source" );
}
atts.removeAttribute( SinkEventAttributes.DECORATION );
String width = (String) atts.getAttribute( Attribute.WIDTH.toString() );
atts.removeAttribute( Attribute.WIDTH.toString() );
writeStartTag( Tag.DIV, atts );
writeEOL( true );
if ( width != null )
{
atts.addAttribute( Attribute.WIDTH.toString(), width );
}
atts.removeAttribute( Attribute.ALIGN.toString() );
atts.removeAttribute( Attribute.CLASS.toString() );
writeStartTag( VERBATIM_TAG, atts );
}
/** {@inheritDoc} */
public void verbatim_()
{
writeEndTag( VERBATIM_TAG );
writeEOL( true );
writeEndTag( Tag.DIV );
writeEOL( true );
}
// ----------------------------------------------------------------------
// Private methods
// ----------------------------------------------------------------------
private void write( String text )
{
writer.write( unifyEOLs( text ) );
}
/**
* Starts a Tag. For instance:
*
* <tag>
*
*
* Note: Copy from {@link AbstractXmlSink#writeStartTag(javax.swing.text.html.HTML.Tag)}
*
* @param t a non null tag
* @see #writeStartTag(javax.swing.text.html.HTML.Tag)
*/
private void writeStartTag( Tag t )
{
writeStartTag( t, null );
}
/**
* Starts a Tag with attributes. For instance:
*
* <tag attName="attValue">
*
*
* Note: Copy from {@link AbstractXmlSink#writeStartTag(javax.swing.text.html.HTML.Tag,
* javax.swing.text.MutableAttributeSet)}
*
* @param t a non null tag
* @param att a set of attributes
* @see #writeStartTag(javax.swing.text.html.HTML.Tag, javax.swing.text.MutableAttributeSet, boolean)
*/
private void writeStartTag( Tag t, MutableAttributeSet att )
{
writeStartTag( t, att, false );
}
/**
* Starts a Tag with attributes. For instance:
*
* <tag attName="attValue">
*
*
* Note: Copy from {@link AbstractXmlSink#writeStartTag(javax.swing.text.html.HTML.Tag,
* javax.swing.text.MutableAttributeSet, boolean)}
*
* @param t a non null tag
* @param att a set of attributes
* @param isSimpleTag boolean to write as a simple tag
*/
private void writeStartTag( Tag t, MutableAttributeSet att, boolean isSimpleTag )
{
if ( t == null )
{
throw new IllegalArgumentException( "A tag is required" );
}
StringBuilder sb = new StringBuilder();
sb.append( LESS_THAN );
sb.append( t.toString() );
sb.append( SinkUtils.getAttributeString( att ) );
if ( isSimpleTag )
{
sb.append( SPACE ).append( SLASH );
}
sb.append( GREATER_THAN );
write( sb.toString() );
}
/**
* Writes a system EOL.
*/
private void writeEOL()
{
write( EOL );
}
/**
* Writes a system EOL, with or without trim.
*/
private void writeEOL( boolean trim )
{
if ( !trim )
{
writeEOL();
return;
}
String tmp = writer.toString().trim();
writer = new StringWriter();
writer.write( tmp );
write( EOL );
}
/**
* Ends a Tag without writing an EOL. For instance:
</tag>
.
*
* Note: Copy from {@link AbstractXmlSink#writeEndTag(javax.swing.text.html.HTML.Tag)}
*
* @param t a tag.
*/
private void writeEndTag( Tag t )
{
StringBuilder sb = new StringBuilder();
sb.append( LESS_THAN );
sb.append( SLASH );
sb.append( t.toString() );
sb.append( GREATER_THAN );
write( sb.toString() );
}
/**
* Write HTML escaped text to output.
*
* @param text The text to write.
*/
protected void content( String text )
{
write( escapeHTML( text ) );
}
/** {@inheritDoc} */
protected void init()
{
super.init();
this.writer = new StringWriter();
this.headFlag = false;
this.levelList = 0;
this.listStyles.clear();
this.boldFlag = false;
this.boldItalicOrMonodpacedFlag = false;
}
/**
* Forward to HtmlTools.escapeHTML( text ).
*
* @param text the String to escape, may be null
* @return the text escaped, "" if null String input
* @see org.apache.maven.doxia.util.HtmlTools#escapeHTML(String)
*/
protected static String escapeHTML( String text )
{
return HtmlTools.escapeHTML( text );
}
}
