java.nio.Buffer.hasRemaining()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.nio.Buffer.hasRemaining()方法的一些代码示例，展示了Buffer.hasRemaining()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Buffer.hasRemaining()方法的具体详情如下：
包路径：java.nio.Buffer
类名称：Buffer
方法名：hasRemaining

Buffer.hasRemaining介绍

[英]Indicates if there are elements remaining in this buffer, that is if position < limit.
[中]指示此缓冲区中是否还有元素，即位置<限制。

代码示例

代码示例来源：origin: wildfly/wildfly

/**
 * Determine whether any of the buffers has remaining data.
 *
 * @param buffers the buffers
 * @param offs the offset into the buffers array
 * @param len the number of buffers to check
 * @return {@code true} if any of the selected buffers has remaining data
 */
public static boolean hasRemaining(final Buffer[] buffers, final int offs, final int len) {
  for (int i = 0; i < len; i ++) {
    if (buffers[i + offs].hasRemaining()) {
      return true;
    }
  }
  return false;
}

代码示例来源：origin: stackoverflow.com

ByteBuffer bb = ByteBuffer.wrap(byteArray);
bb.order( ByteOrder.LITTLE_ENDIAN);
while( bb.hasRemaining()) {
  short v = bb.getShort();
  /* Do something with v... */
}

代码示例来源：origin: Rajawali/Rajawali

public static int[] getIntArrayFromBuffer(Buffer buffer) {
  int[] array = new int[0];
  if (buffer != null) {
    if (buffer.hasArray()) {
      array = (int[]) buffer.array();
    } else {
      buffer.rewind();
      array = new int[buffer.capacity()];
      if (buffer instanceof IntBuffer) {
        ((IntBuffer) buffer).get(array);
      } else if (buffer instanceof ShortBuffer) {
        int count = 0;
        while (buffer.hasRemaining()) {
          array[count] = (int) (((ShortBuffer) buffer).get());
          ++count;
        }
      }
    }
  }
  return array;
}

代码示例来源：origin: Rajawali/Rajawali

/**
   * Creates an int array from the provided {@link IntBuffer} or {@link ShortBuffer}.
   * 
   * @param buffer {@link Buffer} the data source. Should be either a {@link IntBuffer} 
   * or {@link ShortBuffer}.
   * @return int array containing the data of the buffer.
   */
  public static int[] getIntArrayFromBuffer(Buffer buffer) {
    int[] array = null;
    if (buffer.hasArray()) {
      array = (int[]) buffer.array();
    } else {
      buffer.rewind();
      array = new int[buffer.capacity()];
      if (buffer instanceof IntBuffer) {
        ((IntBuffer) buffer).get(array);
      } else if (buffer instanceof ShortBuffer) {
        int count = 0;
        while (buffer.hasRemaining()) {
          array[count] = (int) (((ShortBuffer) buffer).get());
          ++count;
        }
      }
    }
    return array;
  }
}

代码示例来源：origin: wildfly/wildfly

private boolean writeWrappedBuffer(boolean writeFinal) throws IOException {
  synchronized (sslEngine.getWrapLock()) {
    final ByteBuffer wrapBuffer = sslEngine.getWrappedBuffer();
    for (;;) {
      try {
        if (!wrapBuffer.flip().hasRemaining()) {
          if (writeFinal) {
            terminateWrites();
          }
          return true;
        }
        if(writeFinal) {
          if (super.writeFinal(wrapBuffer) == 0) {
            return false;
          }
        } else {
          if (super.write(wrapBuffer) == 0) {
            return false;
          }
        }
      } finally {
        wrapBuffer.compact();
      }
    }
  }
}

代码示例来源：origin: stackoverflow.com

// 4k buffer size.
static final int SIZE = 4 * 1024;
static byte[] buffer = new byte[SIZE];

// Fastest because a FileInputStream has an associated channel.
private static void ScanDataFile(Hunter p, FileInputStream f) throws FileNotFoundException, IOException {
  // Use a mapped and buffered stream for best speed.
  // See: http://nadeausoftware.com/articles/2008/02/java_tip_how_read_files_quickly
  final FileChannel ch = f.getChannel();
  long red = 0L;
  do {
    final long read = Math.min(Integer.MAX_VALUE, ch.size() - red);
    final MappedByteBuffer mb = ch.map(FileChannel.MapMode.READ_ONLY, red, read);
    int nGet;
    while (mb.hasRemaining() && p.ok()) {
      nGet = Math.min(mb.remaining(), SIZE);
      mb.get(buffer, 0, nGet);
      for (int i = 0; i < nGet && p.ok(); i++) {
        p.check(buffer[i]);
        //size += 1;
      }
    }
    red += read;
  } while (red < ch.size() && p.ok());
  // Finish off.
  p.close();
  ch.close();
  f.close();
}

代码示例来源：origin: stackoverflow.com

final MappedByteBuffer mb = ch.map(FileChannel.MapMode.READ_ONLY, red, read);
int nGet;
while (mb.hasRemaining()) {
  nGet = Math.min(mb.remaining(), SIZE);
  mb.get(buffer, 0, nGet);

代码示例来源：origin: stackoverflow.com

ByteBuffer buf = ButeBuffer.wrap( bytes );
buf.order( ByteOrder.BIG_ENDIAN );

while ( buf.hasRemaining() ) {
  int num = buf.getInt();
  // do something with num...
}

代码示例来源：origin: stackoverflow.com

ByteBuffer bb = ... // Byte buffer with your frame or h.264 NAL stream

int marker = 0xffffffff;
while (bb.hasRemaining()) {
  int b = bb.get() & 0xff;
  if (marker == 1) {
    if ((b & 0x1f) == 5)
      System.out.println("IDR slice!! " + (bb.position() - 1));
  }
  marker = (marker << 8) | b;
}

代码示例来源：origin: stackoverflow.com

FileInputStream f = new FileInputStream(fileName);
FileChannel ch = f.getChannel( );
MappedByteBuffer mbb = ch.map( ch.MapMode.READ_ONLY, 0L, ch.size( ) );
while ( mbb.hasRemaining( ) )  {
   // Access the data using the mbb
}

代码示例来源：origin: stackoverflow.com

byte[] payload = new byte[]{0x7F,0x1B,0x10,0x11};
ByteBuffer bb = ByteBuffer.wrap(payload).order(ByteOrder.BIG_ENDIAN);
ShortBuffer sb = bb.asShortBuffer();
while(sb.hasRemaining()){
 System.out.println(sb.get());
}

代码示例来源：origin: stackoverflow.com

final ByteBuffer orig = ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN)
  .asReadOnlyBuffer();

final ByteBuffer transformed = ByteBuffer.wrap(bytes.length)
  .order(ByteOrder.LITTLE_ENDIAN);

while (orig.hasRemaining())
  transformed.putShort(orig.getShort() >>> 1);

return transformed.array();

代码示例来源：origin: stackoverflow.com

public static BigInteger parityWordChecksum(BigInteger key) {
  LongBuffer buffer = ByteBuffer.wrap(key.toByteArray()).asLongBuffer();
  long xor = 0;

  while (buffer.hasRemaining()) {
    xor ^= buffer.get();
  }

  ByteBuffer result = ByteBuffer.allocate(8);
  result.putLong(xor);

  return new BigInteger(1, result.array()); // Signum 1 for unsigned
}

代码示例来源：origin: stackoverflow.com

ByteBuffer buf = ByteBuffer.allocate(BUF_SIZE);
FileChannel fileChannel = fileInputStream.getChannel();
int readCount = 0;
while ( (readCount = fileChannel.read(buf)) > 0) {
 buf.flip();
 while (buf.hasRemaining()) {
  byte b = buf.get();
 }
 buf.clear();
}

代码示例来源：origin: com.gitee.l0km/common-base

public static final void notEmptyElement(Buffer[] t,String arg){
  notEmpty(t,arg);
  for(int i=0;i<t.length;i++){			
    if (null == t[i] || !t[i].hasRemaining()) {
      throw new IllegalArgumentException(String.format("%s:%s[%d] is null or empty",getLocation(),arg,i));
    }
  }
}
public static final void notEmptyElement(Collection<Buffer> t,String arg){

代码示例来源：origin: com.gitee.l0km/common-base

public static final void notEmptyElement(Collection<Buffer> t,String arg){
  notEmpty(t,arg);
  for(Buffer buffer:t){			
    if (null == buffer || !buffer.hasRemaining()) {
      throw new IllegalArgumentException(String.format("%s:%s have null or empty element",getLocation(),arg));
    }
  }
}
public static final <T extends Collection<?>>void notEmpty(T t,String arg){

代码示例来源：origin: gov.nasa.gsfc.heasarc/nom-tam-fits

@Override
public void appendToByteBuffer(ByteBuffer byteBuffer, B dataToAppend) {
  byte[] temp = new byte[Math.min(COPY_BLOCK_SIZE * this.size, dataToAppend.remaining() * this.size)];
  B typedBuffer = asTypedBuffer(ByteBuffer.wrap(temp));
  Object array = newArray(Math.min(COPY_BLOCK_SIZE, dataToAppend.remaining()));
  while (dataToAppend.hasRemaining()) {
    int part = Math.min(COPY_BLOCK_SIZE, dataToAppend.remaining());
    getArray(dataToAppend, array, part);
    putArray(typedBuffer, array, part);
    byteBuffer.put(temp, 0, part * this.size);
  }
}

代码示例来源：origin: com.ardor3d/ardor3d-core

@Override
public void put(final IndexBufferData<?> buf) {
  if (buf instanceof ShortBufferData) {
    _buffer.put((ShortBuffer) buf.getBuffer());
  } else {
    while (buf.getBuffer().hasRemaining()) {
      put(buf.get());
    }
  }
}

代码示例来源：origin: com.ardor3d/ardor3d-core

@Override
public void put(final IndexBufferData<?> buf) {
  if (buf instanceof ByteBufferData) {
    _buffer.put((ByteBuffer) buf.getBuffer());
  } else {
    while (buf.getBuffer().hasRemaining()) {
      put(buf.get());
    }
  }
}

代码示例来源：origin: Renanse/Ardor3D

@Override
public void put(final IndexBufferData<?> buf) {
  if (buf instanceof ByteBufferData) {
    _buffer.put((ByteBuffer) buf.getBuffer());
  } else {
    while (buf.getBuffer().hasRemaining()) {
      put(buf.get());
    }
  }
}

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