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/**
* Copyright (C) 2011-2012 The XDocReport Team
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package org.apache.poi.xwpf.converter.xhtml;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class SimpleContentHandler
extends DefaultHandler
{
private final OutputStream out;
private final Writer writer;
private boolean startingElement;
private StringBuilder currentCharacters;
private final Integer indent;
private int nbElements;
private boolean firstElement;
public SimpleContentHandler( OutputStream out )
{
this( out, null );
}
public SimpleContentHandler( OutputStream out, Integer indent )
{
this( out, null, indent );
}
public SimpleContentHandler( Writer writer )
{
this( writer, null );
}
public SimpleContentHandler( Writer writer, Integer indent )
{
this( null, writer, indent );
}
private SimpleContentHandler( OutputStream out, Writer writer, Integer indent )
{
this.out = out;
this.writer = writer;
this.currentCharacters = new StringBuilder();
this.indent = indent;
this.firstElement = true;
}
@Override
public void startElement( String uri, String localName, String name, Attributes attributes )
throws SAXException
{
if ( startingElement )
{
write( ">" );
}
if ( currentCharacters.length() > 0 )
{
flushCharacters( currentCharacters.toString() );
resetCharacters();
}
doIndentIfNeeded();
write( "<" );
write( localName );
int length = attributes.getLength();
if ( length > 0 )
{
String attrName = null;
String attrValue = null;
for ( int i = 0; i < length; i++ )
{
attrName = attributes.getLocalName( i );
attrValue = attributes.getValue( i );
write( " " );
write( attrName );
write( "=\"" );
write( attrValue );
write( "\"" );
}
}
startingElement = true;
firstElement = false;
nbElements++;
}
private void doIndentIfNeeded() throws SAXException
{
if (indent == null || firstElement) {
return;
}
StringBuilder content = new StringBuilder("\n");
for ( int i = 0; i < nbElements; i++ )
{
for ( int j = 0; j < indent; j++ )
{
content.append( ' ' );
}
}
write(content.toString());
}
@Override
public final void endElement( String uri, String localName, String name )
throws SAXException
{
nbElements--;
if ( currentCharacters.length() > 0 )
{
// Flush caracters
flushCharacters( currentCharacters.toString() );
resetCharacters();
}
// Start of end element
if ( startingElement )
{
write( "/>" );
startingElement = false;
}
else
{
doIndentIfNeeded();
write( "" );
}
}
@Override
public final void characters( char[] ch, int start, int length )
throws SAXException
{
if ( startingElement )
{
write( ">" );
}
startingElement = false;
char c;
for ( int i = start; i < start + length; i++ )
{
c = ch[i];
// if ( mustEncodeCharachers() )
// {
// if ( c == '<' )
// {
// currentCharacters.append( LT );
// }
// else if ( c == '>' )
// {
// currentCharacters.append( GT );
// }
// else if ( c == '\'' )
// {
// currentCharacters.append( APOS );
// }
// else if ( c == '&' )
// {
// currentCharacters.append( AMP );
// }
// else
// {
// currentCharacters.append( c );
// }
// }
// else
// {
currentCharacters.append( c );
// }
}
}
protected boolean mustEncodeCharachers()
{
return true;
}
protected void flushCharacters( String characters )
throws SAXException
{
write( characters );
}
protected void resetCharacters()
{
currentCharacters.setLength( 0 );
}
private void write( String content )
throws SAXException
{
try
{
if ( out != null )
{
out.write( content.getBytes() );
}
else
{
writer.write( content );
}
}
catch ( IOException e )
{
throw new SAXException( e );
}
}
}
