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/**
* Copyright (C) 2011-2015 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 fr.opensagres.xdocreport.core.utils;
import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.helpers.AttributesImpl;
import fr.opensagres.xdocreport.core.internal.IXMLPrettyPrinter;
import fr.opensagres.xdocreport.core.internal.IndentNumberPrettyPrinter;
import fr.opensagres.xdocreport.core.internal.NoIndentNumberPrettyPrinter;
import fr.opensagres.xdocreport.core.internal.NoPrettyPrinter;
import fr.opensagres.xdocreport.core.internal.XSLTPrettyPrinter;
/**
* XML Utilities to indent XML.
*/
public class XMLUtils
{
public static final Integer INDENT_NUMBER = new Integer( 4 );
public static final List PRINTERS;
private static IXMLPrettyPrinter wellPrinter = null;
static
{
PRINTERS = new ArrayList();
PRINTERS.add( IndentNumberPrettyPrinter.INSTANCE );
PRINTERS.add( XSLTPrettyPrinter.INSTANCE );
PRINTERS.add( NoIndentNumberPrettyPrinter.INSTANCE );
PRINTERS.add( NoPrettyPrinter.INSTANCE );
}
/**
* Indent the given xml with the 4 indentation.
*
* @param xml XML to indent
* @return
* @throws Exception
*/
public static String prettyPrint( String xml )
{
return prettyPrint( xml, INDENT_NUMBER );
}
/**
* Indent the given xml with the given indent number.
*
* @param xml XML to indent
* @param indent the indent number.
* @return
* @throws Exception
*/
public static String prettyPrint( String xml, int indent )
{
if ( wellPrinter == null )
{
// Loop for printers to get the well printer which doesn't crash.
for ( IXMLPrettyPrinter printer : PRINTERS )
{
try
{
String result = printer.prettyPrint( xml, indent );
wellPrinter = printer;
return result;
}
catch ( Throwable e )
{
}
}
// If error occurs, returns the xml source (with no indentation).
return xml;
}
// Here printer was found, use it.
try
{
return wellPrinter.prettyPrint( xml, indent );
}
catch ( Throwable e )
{
// If error occurs, returns the xml source (with no indentation).
return xml;
}
}
/**
* Get the SAX {@link AttributesImpl} of teh given attributes to modify attribute values.
*
* @param attributes
* @return
*/
public static AttributesImpl toAttributesImpl( Attributes attributes )
{
if ( attributes instanceof AttributesImpl )
{
return (AttributesImpl) attributes;
}
// Another SAX Implementation, create a new instance.
AttributesImpl attributesImpl = new AttributesImpl();
int length = attributes.getLength();
for ( int i = 0; i < length; i++ )
{
attributesImpl.addAttribute( attributes.getURI( i ), attributes.getLocalName( i ),
attributes.getQName( i ), attributes.getType( i ), attributes.getValue( i ) );
}
return attributesImpl;
}
}
