libcore.io

Class BufferIterator

java.lang.Object

libcore.io.BufferIterator

Direct Known Subclasses:

HeapBufferIterator, NioBufferIterator

public abstract class BufferIterator
extends Object

Iterates over big- or little-endian bytes. See MemoryMappedFile.bigEndianIterator() and MemoryMappedFile.littleEndianIterator().

Constructor Summary

Constructors

Constructor and Description
BufferIterator()

Method Summary

Modifier and Type	Method and Description
abstract byte	readByte() Returns the byte at the current position, and advances the current position one byte.
abstract void	readByteArray(byte[] dst, int dstOffset, int byteCount) Copies byteCount bytes from the current position into dst, starting at dstOffset, and advances the current position byteCount bytes.
abstract int	readInt() Returns the 32-bit int at the current position, and advances the current position four bytes.
abstract void	readIntArray(int[] dst, int dstOffset, int intCount) Copies intCount 32-bit ints from the current position into dst, starting at dstOffset, and advances the current position 4 * intCount bytes.
abstract short	readShort() Returns the 16-bit short at the current position, and advances the current position two bytes.
abstract void	seek(int offset) Seeks to the absolute position offset, measured in bytes from the start.
abstract void	skip(int byteCount) Skips forwards or backwards byteCount bytes from the current position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BufferIterator

public BufferIterator()

Method Detail

seek

public abstract void seek(int offset)

Seeks to the absolute position offset, measured in bytes from the start.

skip

public abstract void skip(int byteCount)

Skips forwards or backwards byteCount bytes from the current position.

readByteArray

public abstract void readByteArray(byte[] dst,
                                   int dstOffset,
                                   int byteCount)

Copies byteCount bytes from the current position into dst, starting at dstOffset, and advances the current position byteCount bytes.

readByte

public abstract byte readByte()

Returns the byte at the current position, and advances the current position one byte.

readInt

public abstract int readInt()

Returns the 32-bit int at the current position, and advances the current position four bytes.

readIntArray

public abstract void readIntArray(int[] dst,
                                  int dstOffset,
                                  int intCount)

Copies intCount 32-bit ints from the current position into dst, starting at dstOffset, and advances the current position 4 * intCount bytes.

readShort

public abstract short readShort()

Returns the 16-bit short at the current position, and advances the current position two bytes.