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/*
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 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
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 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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package com.sun.enterprise.admin.servermgmt.stringsubs.impl;

import java.io.File;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.sun.enterprise.admin.servermgmt.SLogger;
import com.sun.enterprise.admin.servermgmt.xml.stringsubs.ChangePairRef;
import com.sun.enterprise.admin.servermgmt.xml.stringsubs.Group;
import com.sun.enterprise.admin.servermgmt.xml.stringsubs.ModeType;

/**
 * This class provides method to process {@link ModeType}.
 * The ModeType is predefined set of values use to alter the
 * substitution containing forward or backward slash in the
 * after value. This attribute can be applied to {@link Group}
 * or {@link ChangePairRef}.
 *
 * @see ModeType
 * @see Group
 */
public class ModeProcessor {

    private static final Logger _logger = SLogger.getLogger();
    /**
     * Process the {@link ModeType} for a given string.
     * 
     * {@link ModeType#FORWARD} : Replaces all backward slashes to forward slash.
     * 
     * 
     * {@link ModeType#DOUBLE} : Append a slash to all backward slash and also add
     *    a backward slash before each colon.
     * 
     * 
     * {@link ModeType#POLICY} : Replaces {@link File#separator} by ${/} for java
     *   policy files.
     * 
     *
     * @param modeType The mode type to be applied on the given input string. 
     * @param input Input string for mode processing.
     * @return Processed string
     */
    static String processModeType(ModeType modeType, String input) {
        if (modeType == null || input == null || input.isEmpty()) {
            return input;
        }
        switch (modeType) {
            case FORWARD:
                // Change all backward slashes to forward slash.
                input = input.replace("\\", "/");
                break;
            case DOUBLE:
                // Add a slash to all back slashes.
                input = input.replace("\\", "\\\\");
                // Add a backslash before each colon.
                input = input.replace(":", "\\:");
                break;
            case POLICY:
                // Replace File.separator by ${/} for java.policy files
                input = input.replace(File.separator, "${/}");
                break;
            default:
                _logger.log(Level.WARNING, SLogger.NO_PROCESSOR_DEFINED, modeType.toString());
                break;
        }
        return input;
    }
}