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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.handler.codec.compression;

import com.jcraft.jzlib.Deflater;
import com.jcraft.jzlib.Inflater;
import com.jcraft.jzlib.JZlib;

/**
 * Utility methods used by {@link JZlibEncoder} and {@link JZlibDecoder}.
 */
final class ZlibUtil {

    static void fail(Inflater z, String message, int resultCode) {
        throw inflaterException(z, message, resultCode);
    }

    static void fail(Deflater z, String message, int resultCode) {
        throw deflaterException(z, message, resultCode);
    }

    static DecompressionException inflaterException(Inflater z, String message, int resultCode) {
        return new DecompressionException(message + " (" + resultCode + ')' + (z.msg != null? ": " + z.msg : ""));
    }

    static CompressionException deflaterException(Deflater z, String message, int resultCode) {
        return new CompressionException(message + " (" + resultCode + ')' + (z.msg != null? ": " + z.msg : ""));
    }

    static JZlib.WrapperType convertWrapperType(ZlibWrapper wrapper) {
        JZlib.WrapperType convertedWrapperType;
        switch (wrapper) {
        case NONE:
            convertedWrapperType = JZlib.W_NONE;
            break;
        case ZLIB:
            convertedWrapperType = JZlib.W_ZLIB;
            break;
        case GZIP:
            convertedWrapperType = JZlib.W_GZIP;
            break;
        case ZLIB_OR_NONE:
            convertedWrapperType = JZlib.W_ANY;
            break;
        default:
            throw new Error();
        }
        return convertedWrapperType;
    }

    static int wrapperOverhead(ZlibWrapper wrapper) {
        int overhead;
        switch (wrapper) {
        case NONE:
            overhead = 0;
            break;
        case ZLIB:
        case ZLIB_OR_NONE:
            overhead = 2;
            break;
        case GZIP:
            overhead = 10;
            break;
        default:
            throw new Error();
        }
        return overhead;
    }

    private ZlibUtil() {
    }
}