/*
* 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.runtime.core.transformer.simple;
import org.mule.runtime.api.metadata.DataType;
import org.mule.runtime.api.streaming.bytes.CursorStreamProvider;
import org.mule.runtime.core.api.transformer.TransformerException;
import org.mule.runtime.core.transformer.AbstractTransformer;
import org.mule.runtime.core.util.IOUtils;
import org.mule.runtime.core.util.StringUtils;
import java.io.InputStream;
import java.nio.charset.Charset;
/**
* Converts a Byte array to a Hex String.
*/
public class ByteArrayToHexString extends AbstractTransformer {
private volatile boolean upperCase = false;
public ByteArrayToHexString() {
registerSourceType(DataType.BYTE_ARRAY);
registerSourceType(DataType.INPUT_STREAM);
registerSourceType(DataType.CURSOR_STREAM_PROVIDER);
setReturnDataType(DataType.STRING);
}
public boolean getUpperCase() {
return upperCase;
}
public void setUpperCase(boolean value) {
upperCase = value;
}
@Override
protected Object doTransform(Object src, Charset encoding) throws TransformerException {
if (src == null) {
return StringUtils.EMPTY;
}
try {
byte[] bytes = null;
if (src instanceof CursorStreamProvider) {
bytes = handleStream(((CursorStreamProvider) src).openCursor());
} else if (src instanceof InputStream) {
bytes = handleStream((InputStream) src);
} else {
bytes = (byte[]) src;
}
return StringUtils.toHexString(bytes, upperCase);
} catch (Exception ex) {
throw new TransformerException(this, ex);
}
}
private byte[] handleStream(InputStream input) {
try {
return IOUtils.toByteArray(input);
} finally {
IOUtils.closeQuietly(input);
}
}
}