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/*******************************************************************************
* Copyright (c) 2009 SAP AG.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eduard Bartsch (SAP AG) - initial API and implementation
* Mathias Kinzler (SAP AG) - initial API and implementation
*******************************************************************************/
package org.eclipse.core.internal.resources.semantic.cacheservice;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.MessageFormat;
import org.eclipse.core.resources.semantic.spi.ICacheUpdateCallback;
import org.eclipse.core.resources.semantic.spi.Util;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
class CachingOutputStream extends OutputStream {
private final CacheService cacheService;
private final ITemporaryContentHandle fileHandle;
private final ICacheUpdateCallback callback;
private final boolean appendMode;
private boolean closed;
protected CachingOutputStream(CacheService service, ITemporaryContentHandle tempHandle, boolean append, ICacheUpdateCallback callback) {
this.cacheService = service;
this.fileHandle = tempHandle;
this.appendMode = append;
this.callback = callback;
this.closed = false;
}
@Override
@SuppressWarnings("boxing")
public void close() throws IOException {
if (closed) {
return;
}
InputStream stream = null;
try {
long timestamp = System.currentTimeMillis();
closed = true;
this.cacheService.addFromTempHandle(this.fileHandle);
IPath path = this.fileHandle.getKey();
stream = this.cacheService.getContent(path);
long appendPosition = this.fileHandle.getAppendPosition();
long skipped = 0l;
if (appendPosition > 0) {
skipped = stream.skip(appendPosition);
}
if (skipped < appendPosition) {
throw new IOException(MessageFormat.format(Messages.CachingOutputStream_CouldNotSkip_XMSG, appendPosition, skipped));
}
this.callback.cacheUpdated(stream, timestamp, this.appendMode);
} catch (CoreException e) {
// $JL-EXC$ ignore
throw new IOException(e.getMessage());
} finally {
Util.safeClose(stream);
}
}
@Override
public void flush() throws IOException {
this.fileHandle.flush();
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
this.fileHandle.write(b, off, len);
}
@Override
public void write(byte[] b) throws IOException {
this.fileHandle.write(b);
}
@Override
public void write(int b) throws IOException {
this.fileHandle.write(b);
}
}
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