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:io.advantageous.conekt.dns.impl.netty.decoder.TextDecoder.java

License:Open Source License

/**
 * Returns a decoded TXT (text) resource record, stored as an
 * {@link java.util.ArrayList} of {@code String}s.
 *
 * @param response the DNS response that contains the resource record being
 *                 decoded/* ww  w  .ja  va  2 s  .  c  om*/
 * @param resource the resource record being decoded
 */
@Override
public List<String> decode(DnsResponse response, DnsResource resource) {
    List<String> list = new ArrayList<>();
    ByteBuf data = resource.content().readerIndex(response.originalIndex());
    int index = data.readerIndex();
    while (index < data.writerIndex()) {
        int len = data.getUnsignedByte(index++);
        list.add(data.toString(index, len, CharsetUtil.UTF_8));
        index += len;
    }
    return list;
}

From source file:io.advantageous.conekt.dns.impl.netty.DnsResponseDecoder.java

License:Open Source License

/**
 * Retrieves a domain name given a buffer containing a DNS packet. If the
 * name contains a pointer, the position of the buffer will be set to
 * directly after the pointer's index after the name has been read.
 *
 * @param buf the byte buffer containing the DNS packet
 * @return the domain name for an entry//w w  w  .java 2s . c o  m
 */
public static String readName(ByteBuf buf) {
    int position = -1;
    StringBuilder name = new StringBuilder();
    for (int len = buf.readUnsignedByte(); buf.isReadable() && len != 0; len = buf.readUnsignedByte()) {
        boolean pointer = (len & 0xc0) == 0xc0;
        if (pointer) {
            if (position == -1) {
                position = buf.readerIndex() + 1;
            }
            buf.readerIndex((len & 0x3f) << 8 | buf.readUnsignedByte());
        } else {
            name.append(buf.toString(buf.readerIndex(), len, CharsetUtil.UTF_8)).append(".");
            buf.skipBytes(len);
        }
    }
    if (position != -1) {
        buf.readerIndex(position);
    }
    if (name.length() == 0) {
        return null;
    }
    return name.substring(0, name.length() - 1);
}

From source file:io.advantageous.conekt.dns.impl.netty.DnsResponseDecoder.java

License:Open Source License

/**
 * Retrieves a domain name given a buffer containing a DNS packet without
 * advancing the readerIndex for the buffer.
 *
 * @param buf    the byte buffer containing the DNS packet
 * @param offset the position at which the name begins
 * @return the domain name for an entry//from  w  w w.  j  a  v a2s. co m
 */
public static String getName(ByteBuf buf, int offset) {
    StringBuilder name = new StringBuilder();
    for (int len = buf.getUnsignedByte(offset++); buf.writerIndex() > offset
            && len != 0; len = buf.getUnsignedByte(offset++)) {
        boolean pointer = (len & 0xc0) == 0xc0;
        if (pointer) {
            offset = (len & 0x3f) << 8 | buf.getUnsignedByte(offset++);
        } else {
            name.append(buf.toString(offset, len, CharsetUtil.UTF_8)).append(".");
            offset += len;
        }
    }
    if (name.length() == 0) {
        return null;
    }
    return name.substring(0, name.length() - 1);
}

From source file:io.atomix.cluster.messaging.impl.MessageDecoder.java

License:Apache License

static String readString(ByteBuf buffer, int length, Charset charset) {
    if (buffer.isDirect()) {
        final String result = buffer.toString(buffer.readerIndex(), length, charset);
        buffer.skipBytes(length);//  w  w w  . j  ava 2  s .  co m
        return result;
    } else if (buffer.hasArray()) {
        final String result = new String(buffer.array(), buffer.arrayOffset() + buffer.readerIndex(), length,
                charset);
        buffer.skipBytes(length);
        return result;
    } else {
        final byte[] array = new byte[length];
        buffer.readBytes(array);
        return new String(array, charset);
    }
}

From source file:io.hekate.network.netty.NettyMessage.java

License:Apache License

static String utf(ByteBuf buf) throws IOException {
    try {//from ww w .  j a v  a2 s.c  om
        int len = buf.readInt();

        String string = buf.toString(buf.readerIndex(), len, StandardCharsets.UTF_8);

        buf.skipBytes(len);

        return string;
    } catch (IndexOutOfBoundsException e) {
        throw endOfStream(e);
    }
}

From source file:io.hydramq.core.type.converters.StringConverter.java

License:Open Source License

@Override
public String read(final ConversionContext context, final ByteBuf buffer) {
    int size = buffer.readInt();
    String value = buffer.toString(buffer.readerIndex(), size, CharsetUtil.UTF_8);
    buffer.skipBytes(size);/*from   www .  j a  v a2  s. c  om*/
    return value;
}

From source file:io.jsync.dns.impl.netty.decoder.TextDecoder.java

License:Open Source License

/**
 * Returns a decoded TXT (text) resource record, stored as an
 * {@link ArrayList} of {@code String}s.
 *
 * @param response the DNS response that contains the resource record being
 *                 decoded//from   w ww  .j ava 2  s  .c  o m
 * @param resource the resource record being decoded
 */
@Override
public List<String> decode(DnsResponse response, DnsResource resource) {
    List<String> list = new ArrayList<String>();
    ByteBuf data = resource.content().readerIndex(response.originalIndex());
    int index = data.readerIndex();
    while (index < data.writerIndex()) {
        int len = data.getUnsignedByte(index++);
        list.add(data.toString(index, len, CharsetUtil.UTF_8));
        index += len;
    }
    return list;
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static String utf8Slice(JSObject object, int start, int end) {
    ByteBuf b = extract(object);
    return b.toString(start, (end - start), UTF8);
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static String asciiSlice(JSObject object, int start, int end) {
    ByteBuf b = extract(object);
    return b.toString(start, (end - start), ASCII);
}

From source file:io.nodyn.buffer.Buffer.java

License:Apache License

public static String ucs2Slice(JSObject object, int start, int end) {
    ByteBuf b = extract(object);
    return b.toString(start, (end - start), UCS2);
}