com.emc.codec.util.CodecUtil Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) 2015, EMC Corporation.
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * + Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 * + Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * + The name of EMC Corporation may not be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

package com.emc.codec.util;

import java.util.Map;

public final class CodecUtil {
    public static String getEncodeType(String encodeSpec) {
        if (encodeSpec.contains(":")) return encodeSpec.substring(0, encodeSpec.indexOf(":"));
        return encodeSpec;
    }

    public static String getEncodeAlgorithm(String encodeSpec) {
        if (encodeSpec.contains(":")) {
            String algorithm = encodeSpec.substring(encodeSpec.indexOf(":") + 1);
            if (algorithm.trim().length() > 0) return algorithm;
        }
        return null;
    }

    public static String getEncodeSpec(String type, String algorithm) {
        if (algorithm == null || algorithm.trim().length() == 0) return type;
        return type + ":" + algorithm;
    }

    /**
     * Note: you can only search system properties if defaultValue is one of [String, Integer, Long, Float, Double]
     */
    @SuppressWarnings("unchecked")
    public static  T getCodecProperty(String propertyName, Map codecProperties, T defaultValue) {
        if (codecProperties != null && codecProperties.containsKey(propertyName))
            return (T) codecProperties.get(propertyName);

        String systemValue = System.getProperty(propertyName);
        if (systemValue != null) {
            if (defaultValue.getClass() == String.class) return (T) systemValue;
            else if (defaultValue.getClass() == Integer.class) return (T) Integer.valueOf(systemValue);
            else if (defaultValue.getClass() == Long.class) return (T) Long.valueOf(systemValue);
            else if (defaultValue.getClass() == Float.class) return (T) Float.valueOf(systemValue);
            else if (defaultValue.getClass() == Double.class) return (T) Double.valueOf(systemValue);
        }

        return defaultValue;
    }

    private CodecUtil() {
    }
}