Class BEncoder

java.lang.Object

com.biglybt.core.util.BEncoder

public class BEncoder
extends Object

A set of utility methods to encode a Map into a bencoded array of byte. integer are represented as Long, String as byte[], dictionaries as Map, and list as List.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	BEncoder.XMLEncoder

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	BUFFER_DOUBLE_LIMIT
private byte[]	current_buffer
private int	current_buffer_pos
private OutputStream	current_os
(package private) static final byte[]	DigitOnes
(package private) static final byte[]	digits
(package private) static final byte[]	DigitTens
private final byte[]	int_buffer
private static final byte[]	MINUS_1_BYTES
private static int	non_ascii_logs
private byte[][]	old_buffers

Constructor Summary

Constructors

Constructor	Description
BEncoder()

Method Summary

Modifier and Type	Method	Description
static Object	clone(Object obj)
static List	cloneList(List list)
static Map	cloneMap(Map map)
static byte[]	encode(Map object)
static byte[]	encodeIfLessThan(Map map, long max_size)
private boolean	encodeObject(Object object, boolean utf_key_expected)
private void	encodeObject(Object object, OutputStream os, boolean utf_key_expected)
static String	encodeToJSON(Map b_map)
static JSONArray	encodeToJSONArray(List b_list)
private static Object	encodeToJSONGeneric(Object obj)
static JSONObject	encodeToJSONObject(Map<Object,Object> b_map)
static void	encodeToStream(Map object, OutputStream os)
static StringBuffer	encodeToXML(Map map, boolean simple)
static long	getEncodedSize(Map map)
private String	getEncodedSoFar()
private int	intToBytes(int i)	writes to int_buffer and returns start position in buffer (always runs to end of buffer)
static boolean	isEncodable(Object toCheck)
static boolean	listsAreIdentical(List list1, List list2)
static void	main(String[] args)
static boolean	mapsAreIdentical(Map map1, Map map2)
private static Object	normaliseObject(Object o)
static boolean	objectsAreIdentical(Object o1, Object o2)
private byte[]	toByteArray()
private void	writeByteBuffer(ByteBuffer bb)
private void	writeBytes(byte[] bytes)
private void	writeBytes(byte[] bytes, int offset, int length)
private void	writeChar(char c)
private void	writeInt(int i)
private void	writeLong(long l)

Methods inherited from class Object

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

Field Details

BUFFER_DOUBLE_LIMIT

private static final int BUFFER_DOUBLE_LIMIT

See Also:

• Constant Field Values

MINUS_1_BYTES

private static final byte[] MINUS_1_BYTES

non_ascii_logs

private static volatile int non_ascii_logs

current_buffer

private byte[] current_buffer

current_buffer_pos

private int current_buffer_pos

old_buffers

private byte[][] old_buffers

current_os

private OutputStream current_os

int_buffer

private final byte[] int_buffer

digits

static final byte[] digits

DigitTens

static final byte[] DigitTens

DigitOnes

static final byte[] DigitOnes

Constructor Details

BEncoder

public BEncoder()

Method Details

encode

public static byte[] encode(Map object)
                     throws IOException

Throws:

IOException

encodeToStream

public static void encodeToStream(Map object,
 OutputStream os)
                           throws IOException

Throws:

IOException

encodeObject

private void encodeObject(Object object,
 OutputStream os,
 boolean utf_key_expected)
                   throws IOException

Throws:

IOException

encodeObject

private boolean encodeObject(Object object,
 boolean utf_key_expected)
                      throws IOException

Throws:

IOException

writeChar

private void writeChar(char c)
                throws IOException

Throws:

IOException

writeInt

private void writeInt(int i)
               throws IOException

Throws:

IOException

writeLong

private void writeLong(long l)
                throws IOException

Throws:

IOException

writeBytes

private void writeBytes(byte[] bytes)
                 throws IOException

Throws:

IOException

writeBytes

private void writeBytes(byte[] bytes,
 int offset,
 int length)
                 throws IOException

Throws:

IOException

writeByteBuffer

private void writeByteBuffer(ByteBuffer bb)
                      throws IOException

Throws:

IOException

getEncodedSoFar

private String getEncodedSoFar()

toByteArray

private byte[] toByteArray()

normaliseObject

private static Object normaliseObject(Object o)

isEncodable

public static boolean isEncodable(Object toCheck)

objectsAreIdentical

public static boolean objectsAreIdentical(Object o1,
 Object o2)

listsAreIdentical

public static boolean listsAreIdentical(List list1,
 List list2)

mapsAreIdentical

public static boolean mapsAreIdentical(Map map1,
 Map map2)

getEncodedSize

public static long getEncodedSize(Map map)

encodeIfLessThan

public static byte[] encodeIfLessThan(Map map,
 long max_size)

cloneMap

public static Map cloneMap(Map map)

cloneList

public static List cloneList(List list)

clone

public static Object clone(Object obj)

encodeToXML

public static StringBuffer encodeToXML(Map map,
 boolean simple)

encodeToJSONGeneric

private static Object encodeToJSONGeneric(Object obj)

encodeToJSONArray

public static JSONArray encodeToJSONArray(List b_list)

encodeToJSONObject

public static JSONObject encodeToJSONObject(Map<Object,Object> b_map)

encodeToJSON

public static String encodeToJSON(Map b_map)

intToBytes

private int intToBytes(int i)

writes to int_buffer and returns start position in buffer (always runs to end of buffer)

Parameters:

i -

Returns:

main

public static void main(String[] args)