~ubuntu-branches/ubuntu/precise/tomcat7/precise-proposed

/*

 * 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.catalina.ssi;

import java.io.PrintWriter;

import java.util.Collection;

import java.util.Iterator;

/**

 * Implements the Server-side #printenv command

 * 

 * @author Dan Sandberg

 * @author David Becker

 * @version $Id: SSIPrintenv.java 1138121 2011-06-21 18:32:41Z markt $

 */

public class SSIPrintenv implements SSICommand {

    /**

     * @see SSICommand

     */

    @Override

    public long process(SSIMediator ssiMediator, String commandName,

            String[] paramNames, String[] paramValues, PrintWriter writer) {

        long lastModified = 0;

        //any arguments should produce an error

        if (paramNames.length > 0) {

            String errorMessage = ssiMediator.getConfigErrMsg();

            writer.write(errorMessage);

        } else {

            Collection<String> variableNames = ssiMediator.getVariableNames();

            Iterator<String> iter = variableNames.iterator();

            while (iter.hasNext()) {

                String variableName = iter.next();

                String variableValue = ssiMediator

                        .getVariableValue(variableName);

                //This shouldn't happen, since all the variable names must

                // have values

                if (variableValue == null) {

                    variableValue = "(none)";

                }

                writer.write(variableName);

                writer.write('=');

                writer.write(variableValue);

                writer.write('\n');

                lastModified = System.currentTimeMillis();

            }

        }

        return lastModified;

    }

}