Package java.nio

Examples of java.nio.ByteBuffer.mark()

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            // And now, write the bytes until we have none
            while ( nbStored > 0 )
            {
                if ( remaining > nbStored )
                {
                    pageData.mark();
                    pageData.position( pagePos );
                    pageData.put( bytes, bytes.length - nbStored, nbStored );
                    pageData.reset();
                    nbStored = 0;
                }
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      src.position(start);
         
      while (src.hasRemaining()) {
        if (b == src.get()) { // matching first byte
          src.mark(); // save position in loop
          tgt.mark(); // save position in target
          boolean found = true;
          int pos = src.position()-1;
          while (tgt.hasRemaining()) {
            if (!src.hasRemaining()) { // src expired first
              tgt.reset();
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  }

  private static ByteBuffer directify(ByteBuffer dataBuf) {
    ByteBuffer newBuf = ByteBuffer.allocateDirect(dataBuf.capacity());
    newBuf.position(dataBuf.position());
    newBuf.mark();
    newBuf.put(dataBuf);
    newBuf.reset();
    newBuf.limit(dataBuf.limit());
    return newBuf;
  }
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                            int c = safeGet(encode);
                            if (c != '=') {
                                lElem[index++] = (byte)c;
                            } else {
                                if (!encode.hasRemaining()) break;
                                encode.mark();
                                int c1 = safeGet(encode);
                                if (c1 == '\n' || (c1 == '\r' && (c1 = safeGet(encode)) == '\n')) continue;
                                int d1 = Character.digit(c1, 16);
                                if (d1 == -1) {
                                    encode.reset();
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                                int d1 = Character.digit(c1, 16);
                                if (d1 == -1) {
                                    encode.reset();
                                    break;
                                }
                                encode.mark();
                                if (!encode.hasRemaining()) break;
                                int c2 = safeGet(encode);
                                int d2 = Character.digit(c2, 16);
                                if (d2 == -1) {
                                    encode.reset();
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   * important.
   */
  public ByteBuffer decodeKeyValues(DataInputStream source, int allocateHeaderLength,
      int skipLastBytes, HFileBlockDecodingContext decodingCtx) throws IOException {
    ByteBuffer sourceAsBuffer = ByteBufferUtils.drainInputStreamToBuffer(source);// waste
    sourceAsBuffer.mark();
    PrefixTreeBlockMeta blockMeta = new PrefixTreeBlockMeta(sourceAsBuffer);
    sourceAsBuffer.rewind();
    int numV1BytesWithHeader = allocateHeaderLength + blockMeta.getNumKeyValueBytes();
    byte[] keyValueBytesWithHeader = new byte[numV1BytesWithHeader];
    ByteBuffer result = ByteBuffer.wrap(keyValueBytesWithHeader);
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      // Need to use ByteBuffer.slice() to make sure position starts at 0, which the toStringBinary requires.
      out.value(Bytes.toStringBinary(body.slice()));
    } else {
      // Slow path, if the byte buffer doesn't have array
      byte[] bytes = new byte[body.remaining()];
      body.mark();
      body.get(bytes);
      body.reset();
      out.value(Bytes.toStringBinary(bytes));
    }
    out.endObject();
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            this.current = getPreallocation0();
            dst = new PooledSendBuffer(current, current.buffer);
        }

        ByteBuffer dstbuf = dst.buffer;
        dstbuf.mark();
        src.getBytes(src.readerIndex(), dstbuf);
        dstbuf.reset();
        return dst;
    }
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   */
  public static String decodeNoFallback(final Charset cs,
      final byte[] buffer, final int start, final int end)
      throws CharacterCodingException {
    final ByteBuffer b = ByteBuffer.wrap(buffer, start, end - start);
    b.mark();

    // Try our built-in favorite. The assumption here is that
    // decoding will fail if the data is not actually encoded
    // using that encoder.
    //
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      if(capacity < (metasize+dataSize)) {
        // try to allocate less meta space, because we have sample data
        metasize = METASIZE*(capacity/(perItem+METASIZE));
      }
      ByteBuffer reserved = source.duplicate();
      reserved.mark();
      LOG.info("reserved.remaining() = "+reserved.remaining());
      LOG.info("reserved.size = "+metasize);
      reserved.position(metasize);
      kvbuffer = reserved.slice();
      reserved.flip();
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