public class UtfOps
extends java.lang.Object
Constructor and Description |
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UtfOps() |
Modifier and Type | Method and Description |
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static int |
bytesToChars(byte[] bytes,
int byteOffset,
char[] chars,
int charOffset,
int len,
boolean isByteLen)
Converts byte arrays into character arrays.
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static java.lang.String |
bytesToString(byte[] bytes,
int offset,
int length)
Converts byte arrays into strings.
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static void |
charsToBytes(char[] chars,
int charOffset,
byte[] bytes,
int byteOffset,
int charLength)
Converts character arrays into byte arrays.
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static int |
getByteLength(char[] chars)
Returns the byte length of the UTF string that would be created by
converting the given characters to UTF.
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static int |
getByteLength(char[] chars,
int offset,
int length)
Returns the byte length of the UTF string that would be created by
converting the given characters to UTF.
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static int |
getCharLength(byte[] bytes)
Returns the number of characters represented by the given UTF string.
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static int |
getCharLength(byte[] bytes,
int offset,
int length)
Returns the number of characters represented by the given UTF string.
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static int |
getZeroTerminatedByteLength(byte[] bytes,
int offset)
Returns the byte length of a null terminated UTF string, not including
the terminator.
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static byte[] |
stringToBytes(java.lang.String string)
Converts strings to byte arrays.
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public static int getZeroTerminatedByteLength(byte[] bytes, int offset) throws java.lang.IndexOutOfBoundsException
bytes
- the data containing the UTF string.offset
- the beginning of the string the measure.java.lang.IndexOutOfBoundsException
- if no zero terminator is found.public static int getByteLength(char[] chars)
chars
- the characters that would be converted.public static int getByteLength(char[] chars, int offset, int length)
chars
- the characters that would be converted.offset
- the first character to be converted.length
- the number of characters to be converted.public static int getCharLength(byte[] bytes) throws java.lang.IllegalArgumentException, java.lang.IndexOutOfBoundsException
bytes
- the UTF string.java.lang.IndexOutOfBoundsException
- if a UTF character sequence at the end
of the data is not complete.java.lang.IllegalArgumentException
- if an illegal UTF sequence is
encountered.public static int getCharLength(byte[] bytes, int offset, int length) throws java.lang.IllegalArgumentException, java.lang.IndexOutOfBoundsException
bytes
- the data containing the UTF string.offset
- the first byte to be converted.length
- the number of byte to be converted.java.lang.IndexOutOfBoundsException
- if a UTF character sequence at the end
of the data is not complete.java.lang.IllegalArgumentException
- if an illegal UTF sequence is
encountered.public static int bytesToChars(byte[] bytes, int byteOffset, char[] chars, int charOffset, int len, boolean isByteLen) throws java.lang.IllegalArgumentException, java.lang.IndexOutOfBoundsException
bytes
- the source byte data to convertbyteOffset
- the offset into the byte array at which
to start the conversionchars
- the destination arraycharOffset
- the offset into chars at which to begin the copylen
- the amount of information to copy into charsisByteLen
- if true then len is a measure of bytes, otherwise
len is a measure of charactersjava.lang.IndexOutOfBoundsException
- if a UTF character sequence at the end
of the data is not complete.java.lang.IllegalArgumentException
- if an illegal UTF sequence is
encountered.public static void charsToBytes(char[] chars, int charOffset, byte[] bytes, int byteOffset, int charLength)
chars
- the source character data to convertcharOffset
- the offset into the character array at which
to start the conversionbytes
- the destination arraybyteOffset
- the offset into bytes at which to begin the copycharLength
- the length of characters to copy into bytespublic static java.lang.String bytesToString(byte[] bytes, int offset, int length) throws java.lang.IllegalArgumentException, java.lang.IndexOutOfBoundsException
bytes
- the source byte data to convertoffset
- the offset into the byte array at which
to start the conversionlength
- the number of bytes to be converted.java.lang.IndexOutOfBoundsException
- if a UTF character sequence at the end
of the data is not complete.java.lang.IllegalArgumentException
- if an illegal UTF sequence is
encountered.public static byte[] stringToBytes(java.lang.String string)
string
- the string to convert.Copyright (c) 1996, 2019 Oracle and/or its affiliates. All rights reserved.