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/*******************************************************************************
* Copyright (c) 2008, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.p2.persistence;
import java.io.OutputStream;
import java.net.URI;
import org.eclipse.core.runtime.URIUtil;
import org.eclipse.equinox.p2.metadata.Version;
/*
* Class used to persist a composite repository.
*/
public class CompositeWriter extends XMLWriter implements XMLConstants {
private static final String REPOSITORY_ELEMENT = "repository"; //$NON-NLS-1$
private static final Version CURRENT_VERSION = Version.createOSGi(1, 0, 0);
public CompositeWriter(OutputStream output, String type) {
super(output, new XMLWriter.ProcessingInstruction[] {XMLWriter.ProcessingInstruction.makeTargetVersionInstruction(type, CURRENT_VERSION)});
// TODO: add a processing instruction for the metadata version
}
/**
* Writes a list of URIs referring to sub repositories
*/
protected void writeChildren(URI[] children) {
if (children == null || children.length == 0)
return;
start(CHILDREN_ELEMENT);
attribute(COLLECTION_SIZE_ATTRIBUTE, children.length);
for (int i = 0; i < children.length; i++)
writeChild(children[i]);
end(CHILDREN_ELEMENT);
}
protected void writeChild(URI encodedURI) {
String unencodedString = URIUtil.toUnencodedString(encodedURI);
start(CHILD_ELEMENT);
attribute(LOCATION_ELEMENT, unencodedString);
end(CHILD_ELEMENT);
}
/**
* Write the given composite repository to the output stream.
*/
public void write(CompositeRepositoryState repository) {
start(REPOSITORY_ELEMENT);
attribute(NAME_ATTRIBUTE, repository.getName());
attribute(TYPE_ATTRIBUTE, repository.getType());
attribute(VERSION_ATTRIBUTE, repository.getVersion());
attributeOptional(PROVIDER_ATTRIBUTE, repository.getProvider());
attributeOptional(DESCRIPTION_ATTRIBUTE, repository.getDescription()); // TODO: could be cdata?
writeProperties(repository.getProperties());
writeChildren(repository.getChildren());
end(REPOSITORY_ELEMENT);
flush();
}
}
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