org.eclipse.gyrex.boot.internal.console.FindCmd.java Source code

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Here is the source code for org.eclipse.gyrex.boot.internal.console.FindCmd.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.boot.internal.console;

import java.io.InputStream;
import java.net.URL;
import java.util.List;

import org.eclipse.gyrex.boot.internal.BootActivator;
import org.eclipse.gyrex.common.console.Command;

import org.osgi.framework.Bundle;

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

public class FindCmd extends Command {

    @Argument(index = 0, usage = "an optional bundle symbolic name filter string", required = false)
    String filter;

    /**
     * Creates a new instance.
     */
    public FindCmd() {
        super("searches bundles for possible debug options (requires .options file in bundle)");
    }

    @Override
    protected void doExecute() throws Exception {
        final Bundle[] bundles = BootActivator.getInstance().getContext().getBundles();
        for (final Bundle bundle : bundles) {
            // skip bundles that are installed or uninstalled
            if ((bundle.getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) != 0) {
                continue;
            }

            // check filter
            final String symbolicName = bundle.getSymbolicName();
            if ((null != filter) && !StringUtils.containsIgnoreCase(symbolicName, filter)) {
                continue;
            }

            // find options file
            final URL optionsEntry = bundle.getEntry(".options");
            if (null == optionsEntry) {
                continue;
            }

            // print options file
            final InputStream stream = optionsEntry.openStream();
            try {
                final List<String> lines = IOUtils.readLines(stream);

                final StrBuilder string = new StrBuilder();
                final int padWidth = symbolicName.length() + 6;
                string.appendPadding(padWidth, '-').appendNewLine();
                string.append("   ").append(symbolicName).appendNewLine();
                string.appendPadding(padWidth, '-').appendNewLine();
                for (final String line : lines) {
                    string.append("> ").appendln(line);
                }
                printf(string.toString());
            } finally {
                IOUtils.closeQuietly(stream);
            }
        }
    }
}