org.eclipse.gyrex.preferences.internal.console.ExportCmd.java Source code

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Here is the source code for org.eclipse.gyrex.preferences.internal.console.ExportCmd.java

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/*******************************************************************************
 * Copyright (c) 2011, 2012 AGETO Service GmbH and others.
 * 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:
 *     Gunnar Wagenknecht - initial API and implementation
 *******************************************************************************/
package org.eclipse.gyrex.preferences.internal.console;

import java.io.File;
import java.io.FileOutputStream;

import org.eclipse.gyrex.common.console.Command;
import org.eclipse.gyrex.preferences.internal.util.EclipsePreferencesUtil;

import org.eclipse.core.runtime.preferences.IEclipsePreferences;
import org.eclipse.core.runtime.preferences.IPreferencesService;

import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.kohsuke.args4j.Argument;

/**
 * Lists preferences
 */
public class ExportCmd extends Command {

    private static final String FILE_EXT_EPF = ".epf";

    @Argument(index = 0, required = true, usage = "file to export to")
    File file;

    @Argument(index = 1, required = false, usage = "path to a preference node")
    String path;

    /**
     * Creates a new instance.
     */
    public ExportCmd() {
        super("<file> [<path>] - export preferences to file");
    }

    @Override
    protected void doExecute() throws Exception {
        final IPreferencesService preferencesService = EclipsePreferencesUtil.getPreferencesService();

        if (!StringUtils.endsWithIgnoreCase(file.getName(), FILE_EXT_EPF)) {
            file = new File(file.getParentFile(), file.getName().concat(FILE_EXT_EPF));
        }

        IEclipsePreferences node = preferencesService.getRootNode();

        if (StringUtils.isNotBlank(path)) {
            node = (IEclipsePreferences) node.node(path);
        }

        final FileOutputStream output = FileUtils.openOutputStream(file);
        try {
            preferencesService.exportPreferences(node, output, null);
            printf("Successfully exported %s to %s.", node.absolutePath(), file.getAbsolutePath());
        } finally {
            IOUtils.closeQuietly(output);
        }
    }

}