Example usage for io.netty.buffer ByteBuf toString

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf toString.

Prototype

public abstract String toString(int index, int length, Charset charset);

Source Link

Document

Decodes this buffer's sub-region into a string with the specified character set.

Usage

From source file:org.traccar.protocol.WatchProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(1); // '[' header
    manufacturer = buf.readSlice(2).toString(StandardCharsets.US_ASCII);
    buf.skipBytes(1); // '*' delimiter

    int idIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*');
    String id = buf.readSlice(idIndex - buf.readerIndex()).toString(StandardCharsets.US_ASCII);
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
    if (deviceSession == null) {
        return null;
    }/*www.ja  v a 2s .c o  m*/

    buf.skipBytes(1); // '*' delimiter

    String index = null;
    int contentIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*');
    if (contentIndex + 5 < buf.writerIndex() && buf.getByte(contentIndex + 5) == '*'
            && buf.toString(contentIndex + 1, 4, StandardCharsets.US_ASCII).matches("\\p{XDigit}+")) {
        int indexLength = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*') - buf.readerIndex();
        hasIndex = true;
        index = buf.readSlice(indexLength).toString(StandardCharsets.US_ASCII);
        buf.skipBytes(1); // '*' delimiter
    }

    buf.skipBytes(4); // length
    buf.skipBytes(1); // '*' delimiter

    buf.writerIndex(buf.writerIndex() - 1); // ']' ignore ending

    contentIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
    if (contentIndex < 0) {
        contentIndex = buf.writerIndex();
    }

    String type = buf.readSlice(contentIndex - buf.readerIndex()).toString(StandardCharsets.US_ASCII);

    if (contentIndex < buf.writerIndex()) {
        buf.readerIndex(contentIndex + 1);
    }

    if (type.equals("INIT")) {

        sendResponse(channel, id, index, "INIT,1");

    } else if (type.equals("LK")) {

        sendResponse(channel, id, index, "LK");

        if (buf.isReadable()) {
            String[] values = buf.toString(StandardCharsets.US_ASCII).split(",");
            if (values.length >= 3) {
                Position position = new Position(getProtocolName());
                position.setDeviceId(deviceSession.getDeviceId());

                getLastLocation(position, null);

                position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(values[2]));

                return position;
            }
        }

    } else if (type.equals("UD") || type.equals("UD2") || type.equals("UD3") || type.equals("AL")
            || type.equals("WT")) {

        Position position = decodePosition(deviceSession, buf.toString(StandardCharsets.US_ASCII));

        if (type.equals("AL")) {
            if (position != null) {
                position.set(Position.KEY_ALARM, Position.ALARM_SOS);
            }
            sendResponse(channel, id, index, "AL");
        }

        return position;

    } else if (type.equals("TKQ")) {

        sendResponse(channel, id, index, "TKQ");

    } else if (type.equals("PULSE") || type.equals("heart") || type.equals("bphrt")) {

        if (buf.isReadable()) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            getLastLocation(position, new Date());

            String[] values = buf.toString(StandardCharsets.US_ASCII).split(",");
            int valueIndex = 0;

            if (type.equals("bphrt")) {
                position.set("pressureHigh", values[valueIndex++]);
                position.set("pressureLow", values[valueIndex++]);
            }
            position.set(Position.KEY_HEART_RATE, Integer.parseInt(values[valueIndex]));

            return position;

        }

    } else if (type.equals("img")) {

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, null);

        int timeIndex = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',');
        buf.readerIndex(timeIndex + 12 + 2);
        position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(id, buf, "jpg"));

        return position;

    } else if (type.equals("TK")) {

        if (buf.readableBytes() == 1) {
            byte result = buf.readByte();
            if (result != '1') {
                LOGGER.warn(type + "," + result);
            }
            return null;
        }

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, null);

        position.set(Position.KEY_AUDIO, Context.getMediaManager().writeFile(id, buf, "amr"));

        return position;

    }

    return null;
}

From source file:org.traccar.protocol.WristbandProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;
    buf.skipBytes(3); // header
    buf.readUnsignedShort(); // length

    String sentence = buf.toString(buf.readerIndex(), buf.readableBytes() - 3, StandardCharsets.US_ASCII);

    buf.skipBytes(3); // footer

    return decodeMessage(channel, remoteAddress, sentence);
}

From source file:org.waarp.openr66.protocol.localhandler.packet.EndRequestPacket.java

License:Open Source License

/**
 * @param headerLength//from   w ww  .j  av  a 2s  . co m
 * @param middleLength
 * @param endLength
 * @param buf
 * @return the new EndTransferPacket from buffer
 * @throws OpenR66ProtocolPacketException
 */
public static EndRequestPacket createFromBuffer(int headerLength, int middleLength, int endLength, ByteBuf buf)
        throws OpenR66ProtocolPacketException {
    if (headerLength - 1 != 4) {
        throw new OpenR66ProtocolPacketException("Not enough data");
    }
    if (middleLength != 1) {
        throw new OpenR66ProtocolPacketException("Not enough data");
    }
    final int bheader = buf.readInt();
    byte valid = buf.readByte();
    String optional;
    if (endLength > 0) {
        optional = buf.toString(buf.readerIndex(), endLength, Charset.defaultCharset());
        buf.skipBytes(endLength);
        return new EndRequestPacket(bheader, valid, optional);
    }
    return new EndRequestPacket(bheader, valid);
}