io.netty.handler.codec.base64.Base64Decoder Maven / Gradle / Ivy
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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).
/*
* 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.base64;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.DelimiterBasedFrameDecoder;
import io.netty.handler.codec.Delimiters;
import io.netty.handler.codec.MessageToMessageDecoder;
import io.netty.util.internal.ObjectUtil;
import java.util.List;
/**
* Decodes a Base64-encoded {@link ByteBuf} or US-ASCII {@link String}
* into a {@link ByteBuf}. Please note that this decoder must be used
* with a proper {@link ByteToMessageDecoder} such as {@link DelimiterBasedFrameDecoder}
* if you are using a stream-based transport such as TCP/IP. A typical decoder
* setup for TCP/IP would be:
*
* {@link ChannelPipeline} pipeline = ...;
*
* // Decoders
* pipeline.addLast("frameDecoder", new {@link DelimiterBasedFrameDecoder}(80, {@link Delimiters#nulDelimiter()}));
* pipeline.addLast("base64Decoder", new {@link Base64Decoder}());
*
* // Encoder
* pipeline.addLast("base64Encoder", new {@link Base64Encoder}());
*
*/
@Sharable
public class Base64Decoder extends MessageToMessageDecoder {
private final Base64Dialect dialect;
public Base64Decoder() {
this(Base64Dialect.STANDARD);
}
public Base64Decoder(Base64Dialect dialect) {
this.dialect = ObjectUtil.checkNotNull(dialect, "dialect");
}
@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf msg, List