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Server-side Includes module
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/*
 * 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 org.apache.tomcat.util.res.StringManager;

/**
 * Implements the Server-side #exec command
 *
 * @author Bip Thelin
 * @author Paul Speed
 * @author Dan Sandberg
 * @author David Becker
 */
public final class SSIConfig implements SSICommand {
    private static final StringManager sm = StringManager.getManager(SSIConfig.class);

    @Override
    public long process(SSIMediator ssiMediator, String commandName, String[] paramNames, String[] paramValues,
            PrintWriter writer) {
        for (int i = 0; i < paramNames.length; i++) {
            String paramName = paramNames[i];
            String paramValue = paramValues[i];
            String substitutedValue = ssiMediator.substituteVariables(paramValue);
            if (paramName.equalsIgnoreCase("errmsg")) {
                ssiMediator.setConfigErrMsg(substitutedValue);
            } else if (paramName.equalsIgnoreCase("sizefmt")) {
                ssiMediator.setConfigSizeFmt(substitutedValue);
            } else if (paramName.equalsIgnoreCase("timefmt")) {
                ssiMediator.setConfigTimeFmt(substitutedValue);
            } else {
                ssiMediator.log(sm.getString("ssiCommand.invalidAttribute", paramName));
                // We need to fetch this value each time, since it may change during the loop
                String configErrMsg = ssiMediator.getConfigErrMsg();
                writer.write(configErrMsg);
            }
        }
        // Setting config options doesn't really change the page
        return 0;
    }
}