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/*******************************************************************************
* Copyright (c) 2015 Ericsson
*
* 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:
* Marc-Andre Laperle - Initial API and implementation.
*******************************************************************************/
package org.eclipse.tracecompass.internal.tmf.ui.project.wizards.importtrace;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.tracecompass.internal.tmf.ui.Activator;
import org.eclipse.ui.internal.wizards.datatransfer.DataTransferMessages;
import org.eclipse.ui.internal.wizards.datatransfer.ILeveledImportStructureProvider;
/**
* Leveled Structure provider for Gzip file
*/
@SuppressWarnings("restriction")
public class GzipLeveledStructureProvider implements ILeveledImportStructureProvider {
private final GzipFile fFile;
private final GzipEntry root = new GzipEntry();
private final GzipEntry fEntry;
/**
* Creates a <code>GzipFileStructureProvider</code>, which will operate on
* the passed Gzip file.
*
* @param sourceFile
* the source GzipFile
*/
public GzipLeveledStructureProvider(GzipFile sourceFile) {
super();
fFile = sourceFile;
fEntry = sourceFile.entries().nextElement();
}
@Override
public List getChildren(Object element) {
ArrayList<Object> children = new ArrayList<>();
if (element == root) {
children.add(fEntry);
}
return children;
}
@Override
public InputStream getContents(Object element) {
return fFile.getInputStream((GzipEntry) element);
}
@Override
public String getFullPath(Object element) {
return ((GzipEntry) element).getName();
}
@Override
public String getLabel(Object element) {
if (element != root && element != fEntry) {
throw new IllegalArgumentException();
}
return ((GzipEntry) element).getName();
}
/**
* Returns the entry that this importer uses as the root sentinel.
*
* @return GzipEntry entry
*/
@Override
public GzipEntry getRoot() {
return root;
}
@Override
public boolean closeArchive() {
try {
fFile.close();
} catch (IOException e) {
Activator.getDefault().logError(DataTransferMessages.ZipImport_couldNotClose
+ fFile.getName(), e);
return false;
}
return true;
}
@Override
public boolean isFolder(Object element) {
return ((GzipEntry) element).getFileType() == GzipEntry.DIRECTORY;
}
@Override
public void setStrip(int level) {
// Do nothing
}
@Override
public int getStrip() {
return 0;
}
}
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