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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 2016 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.string;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.LineBasedFrameDecoder;
import io.netty.handler.codec.MessageToMessageEncoder;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.ObjectUtil;

import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.util.List;

/**
 * Apply a line separator to the requested {@link String} and encode it into a {@link ByteBuf}.
 * A typical setup for a text-based line protocol in a TCP/IP socket would be:
 *  * {@link ChannelPipeline} pipeline = ...;
 *
 * // Decoders
 * pipeline.addLast("frameDecoder", new {@link LineBasedFrameDecoder}(80));
 * pipeline.addLast("stringDecoder", new {@link StringDecoder}(CharsetUtil.UTF_8));
 *
 * // Encoder
 * pipeline.addLast("lineEncoder", new {@link LineEncoder}(LineSeparator.UNIX, CharsetUtil.UTF_8));
 * 
 * and then you can use a {@link String} instead of a {@link ByteBuf}
 * as a message:
 *  * void channelRead({@link ChannelHandlerContext} ctx, {@link String} msg) {
 *     ch.write("Did you say '" + msg + "'?");
 * }
 * 
 */
@Sharable
public class LineEncoder extends MessageToMessageEncoder {

    private final Charset charset;
    private final byte[] lineSeparator;

    /**
     * Creates a new instance with the current system line separator and UTF-8 charset encoding.
     */
    public LineEncoder() {
        this(LineSeparator.DEFAULT, CharsetUtil.UTF_8);
    }

    /**
     * Creates a new instance with the specified line separator and UTF-8 charset encoding.
     */
    public LineEncoder(LineSeparator lineSeparator) {
        this(lineSeparator, CharsetUtil.UTF_8);
    }

    /**
     * Creates a new instance with the specified character set.
     */
    public LineEncoder(Charset charset) {
        this(LineSeparator.DEFAULT, charset);
    }

    /**
     * Creates a new instance with the specified line separator and character set.
     */
    public LineEncoder(LineSeparator lineSeparator, Charset charset) {
        this.charset = ObjectUtil.checkNotNull(charset, "charset");
        this.lineSeparator = ObjectUtil.checkNotNull(lineSeparator, "lineSeparator").value().getBytes(charset);
    }

    @Override
    protected void encode(ChannelHandlerContext ctx, CharSequence msg, List