diff options
Diffstat (limited to 'src/org/traccar/protocol/Pt502FrameDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/Pt502FrameDecoder.java | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/src/org/traccar/protocol/Pt502FrameDecoder.java b/src/org/traccar/protocol/Pt502FrameDecoder.java deleted file mode 100644 index 316cd987f..000000000 --- a/src/org/traccar/protocol/Pt502FrameDecoder.java +++ /dev/null @@ -1,73 +0,0 @@ -/* - * Copyright 2014 - 2018 Anton Tananaev (anton@traccar.org) - * - * 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.traccar.protocol; - -import io.netty.buffer.ByteBuf; -import io.netty.channel.Channel; -import io.netty.channel.ChannelHandlerContext; -import org.traccar.BaseFrameDecoder; - -import java.nio.charset.StandardCharsets; - -public class Pt502FrameDecoder extends BaseFrameDecoder { - - private static final int BINARY_HEADER = 5; - - @Override - protected Object decode( - ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { - - if (buf.readableBytes() < 10) { - return null; - } - - if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf - && buf.toString(buf.readerIndex() + BINARY_HEADER, 4, StandardCharsets.US_ASCII).equals("$PHD")) { - - int length = buf.getUnsignedShortLE(buf.readerIndex() + 3); - if (buf.readableBytes() >= length) { - buf.skipBytes(BINARY_HEADER); - ByteBuf result = buf.readRetainedSlice(length - BINARY_HEADER - 2); - buf.skipBytes(2); // line break - return result; - } - - } else { - - if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf) { - buf.skipBytes(BINARY_HEADER); - } - - int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\r'); - if (index < 0) { - index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\n'); - } - - if (index > 0) { - ByteBuf result = buf.readRetainedSlice(index - buf.readerIndex()); - while (buf.isReadable() - && (buf.getByte(buf.readerIndex()) == '\r' || buf.getByte(buf.readerIndex()) == '\n')) { - buf.skipBytes(1); - } - return result; - } - - } - - return null; - } - -} |