diff options
Diffstat (limited to 'src/org/traccar/protocol/Tk103FrameDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/Tk103FrameDecoder.java | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/src/org/traccar/protocol/Tk103FrameDecoder.java b/src/org/traccar/protocol/Tk103FrameDecoder.java deleted file mode 100644 index b61a42563..000000000 --- a/src/org/traccar/protocol/Tk103FrameDecoder.java +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright 2017 Valerii Vyshniak (val@val.one) - * Copyright 2017 - 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; - -public class Tk103FrameDecoder extends BaseFrameDecoder { - - @Override - protected Object decode( - ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { - - if (buf.readableBytes() < 2) { - return null; - } - - int frameStartIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '('); - if (frameStartIndex == -1) { - buf.clear(); - return null; - } - - int frameEndIndex, freeTextSymbolCounter; - for (frameEndIndex = frameStartIndex, freeTextSymbolCounter = 0;; frameEndIndex++) { - int freeTextIndex = frameEndIndex; - frameEndIndex = buf.indexOf(frameEndIndex, buf.writerIndex(), (byte) ')'); - if (frameEndIndex == -1) { - break; - } - for (;; freeTextIndex++, freeTextSymbolCounter++) { - freeTextIndex = buf.indexOf(freeTextIndex, frameEndIndex, (byte) '$'); - if (freeTextIndex == -1 || freeTextIndex >= frameEndIndex) { - break; - } - } - if (freeTextSymbolCounter % 2 == 0) { - break; - } - } - - if (frameEndIndex == -1) { - while (buf.readableBytes() > 1024) { - int discardUntilIndex = buf.indexOf(buf.readerIndex() + 1, buf.writerIndex(), (byte) '('); - if (discardUntilIndex == -1) { - buf.clear(); - } else { - buf.readerIndex(discardUntilIndex); - } - } - return null; - } - - buf.readerIndex(frameStartIndex); - - return buf.readRetainedSlice(frameEndIndex + 1 - frameStartIndex); - } - -} |