/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.karaf.util;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;

import org.apache.felix.service.command.CommandSession;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.framework.startlevel.BundleStartLevel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ShellUtil {

    private static final Logger LOGGER = LoggerFactory.getLogger(ShellUtil.class);

    public static String getBundleName(Bundle bundle)
    {
        if (bundle != null)
        {
            String name = (String) bundle.getHeaders().get(Constants.BUNDLE_NAME);
            return (name == null)
                ? "Bundle " + Long.toString(bundle.getBundleId())
                : name + " (" + Long.toString(bundle.getBundleId()) + ")";
        }
        return "[STALE BUNDLE]";
    }

    public static String getUnderlineString(String s)
    {
        StringBuilder sb = new StringBuilder(s.length());
        for (int i = 0; i < s.length(); i++)
        {
            sb.append('-');
        }
        return sb.toString();
    }

    public static String getValueString(Object obj)
    {
        if (obj.getClass().isArray())
        {
            Object[] array = (Object[]) obj;
            StringBuilder sb = new StringBuilder();
            sb.append("[");
            for (int i = 0; i < array.length; i++)
            {
                if (i != 0)
                {
                    sb.append(", ");
                }
                sb.append(getValueString(array[i]));
            }
            sb.append("]");
            return sb.toString();
        }
        else if (obj instanceof String)
        {
            return (String) obj;
        }
        else if (obj instanceof Boolean)
        {
            return ((Boolean) obj).toString();
        }
        else if (obj instanceof Long)
        {
            return ((Long) obj).toString();
        }
        else if (obj instanceof Integer)
        {
            return ((Integer) obj).toString();
        }
        else if (obj instanceof Short)
        {
            return ((Short) obj).toString();
        }
        else if (obj instanceof Double)
        {
            return ((Double) obj).toString();
        }
        else if (obj instanceof Float)
        {
            return ((Float) obj).toString();
        }
        else if (obj instanceof URL)
        {
            return ((URL)obj).toExternalForm();
        }
        else if (obj instanceof URI)
        {
            try {
                return ((URI)obj).toURL().toExternalForm();
            } catch (MalformedURLException e) {
                LOGGER.error("URI could not be transformed to URL",e);
                return obj.toString();
            }
        }
        else if (obj == null)
        {
            return "null";
        }
        else
        {
            return obj.toString();
        }
    }

    /**
     * Check if a bundle is a system bundle (start level < 50)
     * 
     * @param bundleContext
     * @param bundle
     * @return true if the bundle has start level minor than 50
     */
    public static boolean isASystemBundle(BundleContext bundleContext, Bundle bundle) {
        int level = bundle.adapt(BundleStartLevel.class).getStartLevel();
        int sbsl = 49;
        final String sbslProp = bundleContext.getProperty( "karaf.systemBundlesStartLevel" );
        if (sbslProp != null) {
            try {
               sbsl = Integer.valueOf( sbslProp );
            }
            catch( Exception ignore ) {
              // ignore
            }
        }
        return level <= sbsl;
    }

    /**
     * Ask the user to confirm the access to a system bundle
     * 
     * @param bundleId
     * @param session
     * @return true if the user confirm
     * @throws IOException
     */
    public static boolean accessToSystemBundleIsAllowed(long bundleId, CommandSession session) throws IOException {
        for (;;) {
            StringBuffer sb = new StringBuffer();
            System.err.print("You are about to access system bundle " + bundleId + ".  Do you wish to continue (yes/no): ");
            System.err.flush();
            for (;;) {
                int c = session.getKeyboard().read();
                if (c < 0) {
                    return false;
                }
                System.err.print((char) c);
                if (c == '\r' || c == '\n') {
                    break;
                }
                sb.append((char) c);
            }
            String str = sb.toString();
            if ("yes".equals(str)) {
                return true;
            }
            if ("no".equals(str)) {
                return false;
            }
        }
    }

}

@@ -2053,24 +2053,94 @@
 %0A        if 
+(obj == null) %7B%0A            return %22null%22;%0A        %7D %0A        else if 
 (obj.getClas
@@ -3735,85 +3735,8 @@
   %7D%0A
-        else if (obj == null)%0A        %7B%0A            return %22null%22;%0A        %7D%0A
     

Fix problem if obj is null