/*
* $Id: FileToString.java 19250 2010-08-30 16:53:14Z dirk.olmes $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.transport.file.transformers;
import org.mule.api.transformer.TransformerException;
import org.mule.transformer.types.DataTypeFactory;
import java.io.File;
import java.io.UnsupportedEncodingException;
/**
* <code>FileToString</code> reads file contents into a string.
*/
public class FileToString extends FileToByteArray
{
public FileToString()
{
registerSourceType(DataTypeFactory.create(File.class));
registerSourceType(DataTypeFactory.INPUT_STREAM);
registerSourceType(DataTypeFactory.BYTE_ARRAY);
setReturnDataType(DataTypeFactory.STRING);
}
/**
* Simple implementation which relies on {@link FileToByteArray} to get a
* <code>byte[]</code> from the file beeing parsed and then transform it to a
* String with the correct encoding. If the encoding isn't supported simply throw
* an exception, good tranformation or no transformation at all. NOTE: if a
* <code>byte[]</code> is passed in as a source object this transformer accepts
* it and tries the usual transformation.
*/
@Override
public Object doTransform(Object src, String encoding) throws TransformerException
{
byte[] bytes;
if (src instanceof byte[])
{
bytes = (byte[])src;
}
else
{
bytes = (byte[]) super.doTransform(src, encoding);
}
try
{
return new String(bytes, encoding);
}
catch (UnsupportedEncodingException uee)
{
throw new TransformerException(this, uee);
}
}
}