XmlFrameDecoder.java — netty Source File

Source Code

/*
 * Copyright 2013 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.xml;

import static io.netty.util.internal.ObjectUtil.checkPositive;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.CorruptedFrameException;
import io.netty.handler.codec.TooLongFrameException;

import java.util.List;

/**
 * A frame decoder for single separate XML based message streams.
 * <p/>
 * A couple examples will better help illustrate
 * what this decoder actually does.
 * <p/>
 * Given an input array of bytes split over 3 frames like this:
 * <pre>
 * +-----+-----+-----------+
 * | &lt;an | Xml | Element/&gt; |
 * +-----+-----+-----------+
 * </pre>
 * <p/>
 * this decoder would output a single frame:
 * <p/>
 * <pre>
 * +-----------------+
 * | &lt;anXmlElement/&gt; |
 * +-----------------+
 * </pre>
 *
 * Given an input array of bytes split over 5 frames like this:
 * <pre>
 * +-----+-----+-----------+-----+----------------------------------+
 * | &lt;an | Xml | Element/&gt; | &lt;ro | ot&gt;&lt;child&gt;content&lt;/child&gt;&lt;/root&gt; |
 * +-----+-----+-----------+-----+----------------------------------+
 * </pre>
 * <p/>
 * this decoder would output two frames:
 * <p/>
 * <pre>
 * +-----------------+-------------------------------------+
 * | &lt;anXmlElement/&gt; | &lt;root&gt;&lt;child&gt;content&lt;/child&gt;&lt;/root&gt; |
// ... (186 more lines)