/******************************************************************************
* Copyright (c) 2012 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:
* Christian Halstrick (SAP AG) - initial implementation
*****************************************************************************/
package org.eclipse.egit.ui.internal.repository;
import java.text.NumberFormat;
import java.util.Properties;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jgit.api.GarbageCollectCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.util.SystemReader;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;
import org.eclipse.ui.dialogs.PropertyPage;
/**
* Page exposing statistic data for elements that can adapt to a
* {@link Repository} object.
*/
public class RepositoryStatisticsPage extends PropertyPage {
private final NumberFormat bigFpFmt;
private final NumberFormat bigIntFmt;
/**
* Creates a new statistics page
*/
public RepositoryStatisticsPage() {
bigFpFmt = NumberFormat.getInstance(SystemReader.getInstance()
.getLocale());
bigFpFmt.setMaximumFractionDigits(2);
bigIntFmt = NumberFormat.getInstance(SystemReader.getInstance()
.getLocale());
}
protected Control createContents(Composite parent) {
Table table = new Table(parent, SWT.MULTI | SWT.BORDER
| SWT.FULL_SELECTION);
String[] titles = { UIText.RepositoryStatistics_Description,
UIText.RepositoryStatistics_LooseObjects,
UIText.RepositoryStatistics_PackedObjects };
for (int i = 0; i < titles.length; i++) {
TableColumn column = new TableColumn(table, SWT.NONE);
column.setText(titles[i]);
}
Repository repo = (Repository) getElement()
.getAdapter(Repository.class);
if (repo == null)
return table;
Git git = new Git(repo);
GarbageCollectCommand gc = git.gc();
try {
Properties stats = gc.getStatistics();
table.setLinesVisible(true);
table.setHeaderVisible(true);
GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
data.heightHint = 200;
table.setLayoutData(data);
TableItem item = new TableItem(table, SWT.NONE);
item.setText(0, UIText.RepositoryStatistics_NrOfObjects);
item.setText(1, getStatsAsString(stats, "numberOfLooseObjects")); //$NON-NLS-1$
item.setText(2, getStatsAsString(stats, "numberOfPackedObjects")); //$NON-NLS-1$
item = new TableItem(table, SWT.NONE);
item.setText(0, UIText.RepositoryStatistics_NrOfPackfiles);
item.setText(2, getStatsAsString(stats, "numberOfPackFiles")); //$NON-NLS-1$
item = new TableItem(table, SWT.NONE);
item.setText(0, UIText.RepositoryStatistics_NrOfRefs);
item.setText(1, getStatsAsString(stats, "numberOfLooseRefs")); //$NON-NLS-1$
item.setText(2, getStatsAsString(stats, "numberOfPackedRefs"));//$NON-NLS-1$
item = new TableItem(table, SWT.NONE);
item.setText(0, UIText.RepositoryStatistics_SpaceNeededOnFilesystem);
item.setText(1,
describeSize(getStatsAsLong(stats, "sizeOfLooseObjects"))); //$NON-NLS-1$
item.setText(2,
describeSize(getStatsAsLong(stats, "sizeOfPackedObjects"))); //$NON-NLS-1$
for (int i = 0; i < titles.length; i++) {
table.getColumn(i).pack();
}
parent.pack();
} catch (GitAPIException e) {
Activator.handleError(e.getMessage(), e, false);
}
return table;
}
private String getStatsAsString(Properties stats, String key) {
return bigIntFmt.format(firstNonNull(stats.get(key), "")); //$NON-NLS-1$
}
private static long getStatsAsLong(Properties stats, String key) {
Object value = stats.get(key);
if (value instanceof Number)
return ((Number) value).longValue();
return 0L;
}
private static <T> T firstNonNull(T first, T second) {
return first != null ? first : second;
}
private String describeSize(long nrOfBytes) {
if (nrOfBytes < 1000L)
return bigIntFmt.format(nrOfBytes) + " Bytes"; //$NON-NLS-1$
if (nrOfBytes < 1000000L)
return bigFpFmt.format(nrOfBytes / 1000.0)
+ " kB (" + bigIntFmt.format(nrOfBytes) + ")"; //$NON-NLS-1$ //$NON-NLS-2$
if (nrOfBytes < 1000000000L)
return bigFpFmt.format(nrOfBytes / 1000000.0)
+ " MB (" + bigIntFmt.format(nrOfBytes) + ")"; //$NON-NLS-1$ //$NON-NLS-2$
return bigFpFmt.format(nrOfBytes / 1000000000.0)
+ " GB (" + bigIntFmt.format(nrOfBytes) + ")"; //$NON-NLS-1$ //$NON-NLS-2$
}
}