org.jfxvnc.net.rfb.codec.decoder.ServerCutTextDecoder.java Source code

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Here is the source code for org.jfxvnc.net.rfb.codec.decoder.ServerCutTextDecoder.java

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/*******************************************************************************
 * Copyright (c) 2016 comtel inc.
 *
 * Licensed 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:
 *
 * http://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 org.jfxvnc.net.rfb.codec.decoder;

import java.nio.charset.StandardCharsets;
import java.util.List;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;

class ServerCutTextDecoder implements FrameDecoder {

    @Override
    public boolean decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {

        if (!in.isReadable(8)) {
            return false;
        }

        in.markReaderIndex();

        in.skipBytes(4);
        int length = in.readInt();

        if (!in.isReadable(length)) {
            in.resetReaderIndex();
            return false;
        }

        byte[] text = new byte[length];
        in.readBytes(text);
        out.add(new ServerCutTextEvent(new String(text, StandardCharsets.ISO_8859_1)));
        return true;
    }

}