nxt.util

Class Convert

java.lang.Object

nxt.util.Convert

public final class Convert
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Comparator<byte[]>	byteArrayComparator
static byte[]	EMPTY_BYTE
static byte[][]	EMPTY_BYTES
static long[]	EMPTY_LONG
static java.math.BigInteger	two64

Method Summary

Modifier and Type	Method and Description
static java.lang.String	bigIntegerToHexString(java.math.BigInteger bigInteger, int expectedLength)
static long	bytesToLong(byte[] b)
static byte[]	compress(byte[] bytes)
static long	decimalMultiplier(int decimals)
static byte[]	emptyToNull(byte[] bytes)
static java.lang.String	emptyToNull(java.lang.String s)
static long	fromEpochTime(int epochTime)
static long	fullHashToId(byte[] hash)
static int	getMaxStringSize(int length)
static byte[]	intToLittleEndian(int pathComponent)
static boolean	isUtf8Text(byte[] message)
static byte[]	longToBytes(long l)
static long	longValueExact(java.math.BigInteger bigInteger)
static byte[][]	nullToEmpty(byte[][] bytes)
static long[]	nullToEmpty(long[] array)
static java.lang.String	nullToEmpty(java.lang.String s)
static long	nullToZero(java.lang.Long l)
static long	parseAccountId(java.lang.String account)
static byte[]	parseHexString(java.lang.String hex)
static int	parseInt(java.lang.Object o)
static long	parseLong(java.lang.Object o)
static long	parseUnsignedLong(java.lang.String number)
static byte[]	pkcs7Pad(byte[] plaintext)
static byte[]	pkcs7Unpad(byte[] padded)
static java.lang.String	readString(java.nio.ByteBuffer buffer, int numBytes, int maxLength)
static java.lang.String	rsAccount(long accountId)
static long	rsDecode(java.lang.String rsString)
static java.lang.String	rsEncode(long id)
static byte[]	switchEndian(byte[] b) Converts an array in place from big to little endian and vice versa
static long[]	toArray(java.util.List<java.lang.Long> list)
static java.lang.Long[]	toArray(long[] array)
static long[]	toArray(java.lang.Long[] array)
static java.math.BigDecimal	toBigDecimal(long amount, byte decimals)
static byte[]	toBytes(long n)
static byte[]	toBytes(java.lang.String s)
static byte[]	toBytes(java.lang.String s, boolean isText)
static int	toEpochTime(long currentTime)
static java.lang.String	toHexString(byte[] bytes)
static java.util.List<java.lang.Long>	toList(long[] array)
static java.util.Set<java.lang.Long>	toSet(long[] array)
static byte[]	toSignedBytes(short[] s)
static java.lang.String	toString(byte[] bytes)
static java.lang.String	toString(byte[] bytes, boolean isText)
static short[]	toUnsignedBytes(byte[] b)
static java.lang.String	truncate(java.lang.String s, java.lang.String replaceNull, int limit, boolean dots)
static byte[]	uncompress(byte[] bytes)
static long	unitRateToAmount(long unitsQNT, int unitsDecimals, long rateNQT, int rateDecimals)

Methods inherited from class java.lang.Object

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

Field Detail

two64

public static final java.math.BigInteger two64

EMPTY_LONG

public static final long[] EMPTY_LONG

EMPTY_BYTE

public static final byte[] EMPTY_BYTE

EMPTY_BYTES

public static final byte[][] EMPTY_BYTES

byteArrayComparator

public static final java.util.Comparator<byte[]> byteArrayComparator

Method Detail

parseHexString

public static byte[] parseHexString(java.lang.String hex)

toHexString

public static java.lang.String toHexString(byte[] bytes)

parseUnsignedLong

public static long parseUnsignedLong(java.lang.String number)

parseInt

public static int parseInt(java.lang.Object o)

parseLong

public static long parseLong(java.lang.Object o)

parseAccountId

public static long parseAccountId(java.lang.String account)

rsAccount

public static java.lang.String rsAccount(long accountId)

rsEncode

public static java.lang.String rsEncode(long id)

rsDecode

public static long rsDecode(java.lang.String rsString)

fullHashToId

public static long fullHashToId(byte[] hash)

fromEpochTime

public static long fromEpochTime(int epochTime)

toEpochTime

public static int toEpochTime(long currentTime)

emptyToNull

public static java.lang.String emptyToNull(java.lang.String s)

nullToEmpty

public static java.lang.String nullToEmpty(java.lang.String s)

emptyToNull

public static byte[] emptyToNull(byte[] bytes)

nullToEmpty

public static byte[][] nullToEmpty(byte[][] bytes)

nullToEmpty

public static long[] nullToEmpty(long[] array)

nullToZero

public static long nullToZero(java.lang.Long l)

toArray

public static long[] toArray(java.util.List<java.lang.Long> list)

toList

public static java.util.List<java.lang.Long> toList(long[] array)

toArray

public static java.lang.Long[] toArray(long[] array)

toArray

public static long[] toArray(java.lang.Long[] array)

toSet

public static java.util.Set<java.lang.Long> toSet(long[] array)

toBytes

public static byte[] toBytes(java.lang.String s)

toBytes

public static byte[] toBytes(java.lang.String s,
                             boolean isText)

toString

public static java.lang.String toString(byte[] bytes)

toString

public static java.lang.String toString(byte[] bytes,
                                        boolean isText)

toBytes

public static byte[] toBytes(long n)

readString

public static java.lang.String readString(java.nio.ByteBuffer buffer,
                                          int numBytes,
                                          int maxLength)
                                   throws NxtException.NotValidException

Throws:

NxtException.NotValidException

getMaxStringSize

public static int getMaxStringSize(int length)

truncate

public static java.lang.String truncate(java.lang.String s,
                                        java.lang.String replaceNull,
                                        int limit,
                                        boolean dots)

decimalMultiplier

public static long decimalMultiplier(int decimals)

compress

public static byte[] compress(byte[] bytes)

uncompress

public static byte[] uncompress(byte[] bytes)

unitRateToAmount

public static long unitRateToAmount(long unitsQNT,
                                    int unitsDecimals,
                                    long rateNQT,
                                    int rateDecimals)

longToBytes

public static byte[] longToBytes(long l)

bytesToLong

public static long bytesToLong(byte[] b)

longValueExact

public static long longValueExact(java.math.BigInteger bigInteger)

pkcs7Pad

public static byte[] pkcs7Pad(byte[] plaintext)

pkcs7Unpad

public static byte[] pkcs7Unpad(byte[] padded)

toSignedBytes

public static byte[] toSignedBytes(short[] s)

toUnsignedBytes

public static short[] toUnsignedBytes(byte[] b)

intToLittleEndian

public static byte[] intToLittleEndian(int pathComponent)

switchEndian

public static byte[] switchEndian(byte[] b)

Converts an array in place from big to little endian and vice versa

Parameters:

b - input/output array modified in place, use Arrays.copy() when calling to avoid modification

Returns:

the converted array

isUtf8Text

public static boolean isUtf8Text(byte[] message)

bigIntegerToHexString

public static java.lang.String bigIntegerToHexString(java.math.BigInteger bigInteger,
                                                     int expectedLength)

toBigDecimal

public static java.math.BigDecimal toBigDecimal(long amount,
                                                byte decimals)