Package de.cardcontact.tlv

Class ByteBuffer

java.lang.Object

de.cardcontact.tlv.ByteBuffer

public class ByteBuffer
extends java.lang.Object

Implements a mutable byte buffer similar to StringBuffer.

Author:

Andreas Schwier (info@cardcontact.de)

Constructor Summary

Constructors

Constructor	Description
ByteBuffer()	Create empty ByteBuffer with initial capacity of 16 bytes
ByteBuffer(byte[] bytes)	Create ByteBuffer which contains a exact copy of the byte array passed as parameter
ByteBuffer(int length)	Create empty ByteBuffer with initial capacity as defined by parameter length

Method Summary

Modifier and Type	Method	Description
ByteBuffer	append(byte _byte)	Append single byte
ByteBuffer	append(byte[] bytes)	Append byte array
ByteBuffer	append(ByteBuffer bb)	Append ByteBuffer
ByteBuffer	clear(int offset, int count)	Clear buffer in specified range and move trailing data behind offset + count
ByteBuffer	copy(int offset, byte[] source)	Copy source into buffer at offset
static int	find(byte[] source, byte[] search, int offset)	Search byte arrays for matching search string and return zero based offset.
int	find(byte[] search, int offset)	Search ByteBuffer for matching search string and return zero based offset.
static int	find(byte[] source, int length, byte[] search, int offset)	Search byte arrays for matching search string and return zero based offset.
byte	getByteAt(int offset)	Return byte at zero based offset
byte[]	getBytes()	Return ByteBuffer as byte arrays
byte[]	getBytes(int offset, int count)	Return part of ByteBuffer as byte arrays
ByteBuffer	insert(int offset, byte _byte)	Insert byte at offset
ByteBuffer	insert(int offset, byte[] bytes)	Insert contents of byte array at offset
ByteBuffer	insert(int offset, byte[] bytes, int length)	Insert bytes at offset
ByteBuffer	insert(int offset, ByteBuffer bb)	Insert contents of ByteBuffer at offset
int	length()	Return length of ByteBuffer
java.lang.String	toString()	Return hexadecimal string for content of ByteBuffer

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteBuffer

public ByteBuffer()

Create empty ByteBuffer with initial capacity of 16 bytes

ByteBuffer

public ByteBuffer(int length)

Create empty ByteBuffer with initial capacity as defined by parameter length

Parameters:

length - Initial capacity of ByteBuffer

ByteBuffer

public ByteBuffer(byte[] bytes)

Create ByteBuffer which contains a exact copy of the byte array passed as parameter

Parameters:

bytes - Byte array to create ByteBuffer from

Method Detail

append

public ByteBuffer append(byte _byte)

Append single byte

Parameters:

_byte -

Returns:

this

append

public ByteBuffer append(byte[] bytes)

Append byte array

Parameters:

bytes -

Returns:

this

append

public ByteBuffer append(ByteBuffer bb)

Append ByteBuffer

Parameters:

bb -

Returns:

this

insert

public ByteBuffer insert(int offset,
                         byte[] bytes,
                         int length)
                  throws java.lang.IndexOutOfBoundsException

Insert bytes at offset

Parameters:

offset -

bytes -

length -

Returns:

Throws:

java.lang.IndexOutOfBoundsException

insert

public ByteBuffer insert(int offset,
                         byte _byte)
                  throws java.lang.IndexOutOfBoundsException

Insert byte at offset

Parameters:

offset - Position at which to insert the bytes

_byte - Byte to insert

Returns:

this

Throws:

java.lang.IndexOutOfBoundsException - If offset is not in range

insert

public ByteBuffer insert(int offset,
                         byte[] bytes)
                  throws java.lang.IndexOutOfBoundsException

Insert contents of byte array at offset

Parameters:

offset - Position at which to insert the bytes

bytes - Byte array to insert

Returns:

this

Throws:

java.lang.IndexOutOfBoundsException - If offset is not in range

insert

public ByteBuffer insert(int offset,
                         ByteBuffer bb)
                  throws java.lang.IndexOutOfBoundsException

Insert contents of ByteBuffer at offset

Parameters:

offset - Position at which to insert the ByteBuffer

bb - ByteBuffer to insert

Returns:

this

Throws:

java.lang.IndexOutOfBoundsException - If offset is not in range

length

public int length()

Return length of ByteBuffer

Returns:

Length of ByteBuffer

getByteAt

public byte getByteAt(int offset)
               throws java.lang.IndexOutOfBoundsException

Return byte at zero based offset

Parameters:

offset -

Returns:

byte at offset

Throws:

java.lang.IndexOutOfBoundsException

clear

public ByteBuffer clear(int offset,
                        int count)
                 throws java.lang.IndexOutOfBoundsException

Clear buffer in specified range and move trailing data behind offset + count

Parameters:

offset -

count -

Returns:

this

Throws:

java.lang.IndexOutOfBoundsException

copy

public ByteBuffer copy(int offset,
                       byte[] source)

Copy source into buffer at offset

Parameters:

offset -

source -

Returns:

this

find

public static int find(byte[] source,
                       int length,
                       byte[] search,
                       int offset)

Search byte arrays for matching search string and return zero based offset. Start search at given offset. An empty search string is always found.

Parameters:

source - Byte array to search in

length - Range in source to search in

search - Byte array to search for

offset - Offset to start at

Returns:

Zero based offset of match or -1

find

public static int find(byte[] source,
                       byte[] search,
                       int offset)

Search byte arrays for matching search string and return zero based offset. Start search at given offset. An empty search string is always found.

Parameters:

source - Byte array to search in

search - Byte array to search for

offset - Offset to start at

Returns:

Zero based offset of match or -1

find

public int find(byte[] search,
                int offset)

Search ByteBuffer for matching search string and return zero based offset. Start search at given offset. An empty search string is always found.

Parameters:

search - Byte array to search for

offset - Offset to start at

Returns:

Zero based offset of match or -1

getBytes

public byte[] getBytes()

Return ByteBuffer as byte arrays

Returns:

Array of bytes

getBytes

public byte[] getBytes(int offset,
                       int count)

Return part of ByteBuffer as byte arrays

Parameters:

offset - Zero based offset in buffer

count - Number of bytes to extract

Returns:

Array of bytes

toString

public java.lang.String toString()

Return hexadecimal string for content of ByteBuffer

Overrides:

toString in class java.lang.Object

Returns:

Hexadecimal string