aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/Tk103FrameDecoder.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/org/traccar/protocol/Tk103FrameDecoder.java')
-rw-r--r--src/org/traccar/protocol/Tk103FrameDecoder.java75
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);
- }
-
-}