Example usage for io.netty.buffer ByteBuf writerIndex

Introduction

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

Prototype

public abstract int writerIndex();

Source Link

Document

Returns the writerIndex of this buffer.

Usage

From source file:jazmin.server.msg.codec.json.JSONDecoder.java

License:Open Source License

/**
 * Returns the index in the buffer of the end of line found.
 * Returns -1 if no end of line was found in the buffer.
 *//*from w  w w .j  a  v  a2s.  c o m*/
private static int findEndOfLine(final ByteBuf buffer) {
    final int n = buffer.writerIndex();
    for (int i = buffer.readerIndex(); i < n; i++) {
        final byte b = buffer.getByte(i);
        if (b == '\n') {
            return i;
        } else if (b == '\r' && i < n - 1 && buffer.getByte(i + 1) == '\n') {
            return i; // \r\n
        }
    }
    return -1; // Not found.
}

From source file:me.nithanim.cultures.format.cif.CifFileWriter.java

@Override
public void pack(CifFile o, ByteBuf buf) throws IOException {
    List<String> lines = o.getLines();

    ByteBufAllocator alloc = ByteBufAllocator.DEFAULT;
    ByteBuf indexTable = alloc.buffer(o.getLines().size()).order(ByteOrder.LITTLE_ENDIAN);
    ByteBuf contentTable = alloc.buffer(o.getLines().size() * 10).order(ByteOrder.LITTLE_ENDIAN);
    if (o.getFileFormat() == CifFile.FileFormat.CIF) {
        for (String l : lines) {
            int idx = contentTable.writerIndex();
            ByteBufUtil.hexDump(contentTable);
            indexTable.writeInt(idx);/*  w  w w  .jav a  2s.com*/

            l = l.trim();
            if (l.startsWith("[")) {
                l = l.substring(1, l.length() - 1);
                contentTable.writeByte(1);
            } else {
                contentTable.writeByte(2);
            }

            contentTable.writeBytes(l.getBytes(CharsetUtil.ISO_8859_1));
            contentTable.writeByte('\0');
        }
    } else {
        for (String l : lines) {
            int idx = contentTable.writerIndex();
            indexTable.writeInt(idx);

            l = l.trim();

            contentTable.writeBytes(l.getBytes(CharsetUtil.ISO_8859_1));
            contentTable.writeByte('\0');
        }
    }
    EncryptedInformation ei = new EncryptedInformation(o.getLines().size(), indexTable.writerIndex(),
            indexTable, contentTable.writerIndex(), contentTable);

    Writer<EncryptedInformation> eiw;
    if (o.getInternalFormat() == CifFile.InternalFormat.TYPE1) {
        buf.writeInt(65601);
        eiw = type1Writer;
    } else if (o.getInternalFormat() == CifFile.InternalFormat.TYPE2) {
        buf.writeInt(1021);
        eiw = type2Writer;
    } else {
        throw new UnsupportedDataTypeException("The given data is not a cif file!");
    }
    eiw.pack(ei, buf);
}

From source file:mysql.client.Session_Old.java

final String readString(ByteBuf buf, String encoding) throws Exception {
    int i = buf.readerIndex();
    int len = 0;/*from  w ww . ja  v a2s  .  c o  m*/
    int maxLen = buf.writerIndex();

    while ((i < maxLen) && (buf.getByte(i) != 0)) {
        len++;
        i++;
    }

    try {
        return StringUtils.toString(buf.array(), buf.readerIndex(), len, encoding);
    } catch (UnsupportedEncodingException uEE) {
        throw uEE;
    } finally {
        buf.readerIndex(buf.readerIndex() + (len + 1));
    }
}

From source file:mysql.client.Session_Old.java

String readString(ByteBuf buf, String encoding, int expectedLength) throws Exception {
    if (buf.readerIndex() + expectedLength > buf.writerIndex()) {
        throw new RuntimeException();
    }/*from  ww  w  .j  a v a2 s.  c o m*/

    try {
        return StringUtils.toString(buf.array(), buf.readerIndex(), expectedLength, encoding);
    } catch (UnsupportedEncodingException uEE) {
        throw uEE;
    } finally {
        buf.readerIndex(buf.readerIndex() + expectedLength);
    }
}

From source file:mysql.client.Session_Old.java

public void send(ByteBuf packet) throws IOException {
    this.packetSequence++;
    int position = packet.writerIndex();
    packet.readerIndex(0);/*w w w  .j  av  a  2 s.  c o m*/
    packet.writerIndex(0);

    int size = position - 4;
    packet.writeByte((byte) (size & 0xff));
    packet.writeByte((byte) (size >>> 8));
    packet.writeByte((byte) (size >>> 16));
    packet.writeByte(packetSequence);

    socket.getOutputStream().write(packet.array());
    socket.getOutputStream().flush();

}

From source file:nenea.client.operation.OperationClientHandler.java

License:Apache License

private ByteBuf initializeProtocol(String msg, Channel ch) throws UnsupportedEncodingException {
    System.out.println("make JOIN Header");
    ByteBuf buf = ch.alloc().heapBuffer(OP_CODE_JOIN.length() + 12 + msg.getBytes("UTF-8").length);

    buf.writeInt(OP_CODE_JOIN.length());
    buf.writeBytes(OP_CODE_JOIN.getBytes());
    buf.writeLong(msg.getBytes("UTF-8").length);
    buf.writeBytes(msg.getBytes("UTF-8"));

    System.out.println("buffer index : " + buf.writerIndex());
    System.out.println("hex : " + ByteBufUtil.hexDump(buf));

    return buf;/*ww w. ja v  a2 s. c o  m*/
}

From source file:net.epsilony.utils.codec.modbus.handler.ModbusMasterRequestEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, ModbusRequest msg, ByteBuf out) throws Exception {
    int from = out.writerIndex();
    out.writeShort(msg.getTransectionId());
    out.writeShort(0);// w w w.  jav a 2  s.c  o m
    out.writeShort(2 + msg.getFunction().getRequestDataLength());
    out.writeByte(msg.getUnitId());
    out.writeByte(msg.getFunction().getCode());
    msg.getFunction().encodeRequestData(out);
    if (withCheckSum) {
        out.writeShort(checkSum(out, from));
    }
}

From source file:net.epsilony.utils.codec.modbus.handler.ModbusMasterRequestEncoder.java

License:Open Source License

private int checkSum(ByteBuf out, int from) {
    return Utils.crc(out, from, out.writerIndex() - from);
}

From source file:net.epsilony.utils.codec.modbus.handler.ModbusSlaveResponseEncoder.java

License:Open Source License

@Override
protected void encode(ChannelHandlerContext ctx, ModbusResponse msg, ByteBuf out) throws Exception {
    int from = out.writerIndex();
    msg.encode(out);//from   w  w  w . j  a  v a  2s.c o m
    if (withCheckSum) {
        out.writeShort(Utils.crc(out, from, out.writerIndex() - from));
    }
}

From source file:net.tomp2p.storage.AlternativeCompositeByteBuf.java

License:Apache License

@Override
public AlternativeCompositeByteBuf getBytes(int index, ByteBuf dst, int length) {
    getBytes(index, dst, dst.writerIndex(), length);
    dst.writerIndex(dst.writerIndex() + length);
    return this;
}