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//Copyright (c) 2006, Adobe Systems Incorporated
//All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. All advertising materials mentioning features or use of this software
// must display the following acknowledgement:
// This product includes software developed by the Adobe Systems Incorporated.
// 4. Neither the name of the Adobe Systems Incorporated nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY ADOBE SYSTEMS INCORPORATED ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL ADOBE SYSTEMS INCORPORATED BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// http://www.adobe.com/devnet/xmp/library/eula-xmp-library-java.html
package com.itextpdf.xmp.impl;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import com.itextpdf.xmp.XMPException;
import com.itextpdf.xmp.options.SerializeOptions;
/**
* Serializes the XMPMeta-object to an OutputStream according to the
* SerializeOptions.
*
* @since 11.07.2006
*/
public class XMPSerializerHelper
{
/**
* Static method to serialize the metadata object. For each serialisation, a new XMPSerializer
* instance is created, either XMPSerializerRDF or XMPSerializerPlain so thats its possible to
* serialialize the same XMPMeta objects in two threads.
*
* @param xmp a metadata implementation object
* @param out the output stream to serialize to
* @param options serialization options, can be null for default.
* @throws XMPException
*/
public static void serialize(XMPMetaImpl xmp, OutputStream out,
SerializeOptions options)
throws XMPException
{
options = options != null ? options : new SerializeOptions();
// sort the internal data model on demand
if (options.getSort())
{
xmp.sort();
}
new XMPSerializerRDF().serialize(xmp, out, options);
}
/**
* Serializes an XMPMeta-object as RDF into a string.
* Note: Encoding is forced to UTF-16 when serializing to a
* string to ensure the correctness of "exact packet size".
*
* @param xmp a metadata implementation object
* @param options Options to control the serialization (see
* {@link SerializeOptions}).
* @return Returns a string containing the serialized RDF.
* @throws XMPException on serializsation errors.
*/
public static String serializeToString(XMPMetaImpl xmp, SerializeOptions options)
throws XMPException
{
// forces the encoding to be UTF-16 to get the correct string length
options = options != null ? options : new SerializeOptions();
options.setEncodeUTF16BE(true);
ByteArrayOutputStream out = new ByteArrayOutputStream(2048);
serialize(xmp, out, options);
try
{
return out.toString(options.getEncoding());
}
catch (UnsupportedEncodingException e)
{
// cannot happen as UTF-8/16LE/BE is required to be implemented in
// Java
return out.toString();
}
}
/**
* Serializes an XMPMeta-object as RDF into a byte buffer.
*
* @param xmp a metadata implementation object
* @param options Options to control the serialization (see {@link SerializeOptions}).
* @return Returns a byte buffer containing the serialized RDF.
* @throws XMPException on serializsation errors.
*/
public static byte[] serializeToBuffer(XMPMetaImpl xmp, SerializeOptions options)
throws XMPException
{
ByteArrayOutputStream out = new ByteArrayOutputStream(2048);
serialize(xmp, out, options);
return out.toByteArray();
}
}
