Class CESU8Encoding

java.lang.Object

org.jcodings.Encoding

org.jcodings.AbstractEncoding

org.jcodings.MultiByteEncoding

org.jcodings.unicode.UnicodeEncoding

org.jcodings.specific.CESU8Encoding

All Implemented Interfaces:

Cloneable

public final class CESU8Encoding
extends UnicodeEncoding

Field Summary

Fields

Modifier and Type	Field	Description
private static final int[]	CESU8EncLen
(package private) static final int[][]	CESU8Trans
static final CESU8Encoding	INSTANCE
private static final int	INVALID_CODE_FE
private static final int	INVALID_CODE_FF
(package private) static final boolean	USE_INVALID_CODE_SCHEME
private static final int	VALID_CODE_LIMIT

Fields inherited from class MultiByteEncoding

A, EncLen, F, Trans, TransZero

Fields inherited from class Encoding

CHAR_INVALID, isUnicode, isUTF8, maxLength, minLength, NEW_LINE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CESU8Encoding()

Method Summary

Modifier and Type	Method	Description
int	codeToMbc(int code, byte[] bytes, int p)	Extracts code point into it's multibyte representation
int	codeToMbcLength(int code)	Returns character length given a code point Oniguruma equivalent: code_to_mbclen
int[]	ctypeCodeRange(int ctype, IntHolder sbOut)	Returns code range for a given character type Oniguruma equivalent: get_ctype_code_range
String	getCharsetName()	The name of the equivalent Java Charset for this encoding.
boolean	isNewLine(byte[] bytes, int p, int end)	onigenc_is_mbc_newline_0x0a / used also by multibyte encodings
boolean	isReverseMatchAllowed(byte[] bytes, int p, int end)	Returns true if it's safe to use reversal Boyer-Moore search fail fast algorithm Oniguruma equivalent: is_allowed_reverse_match
int	leftAdjustCharHead(byte[] bytes, int p, int s, int end)	Seeks the previous character head in a stream Oniguruma equivalent: left_adjust_char_head
int	length(byte[] bytes, int p, int end)	Returns character length given stream, character position and stream end returns 1 for singlebyte encodings or performs sanity validations for multibyte ones and returns the character length, missing characters in the stream otherwise
private int	lengthForOneUptoSix(byte[] bytes, int p, int end, int b, int s)
int	mbcCaseFold(int flag, byte[] bytes, IntHolder pp, int end, byte[] fold)	onigenc_ascii_mbc_case_fold
int	mbcToCode(byte[] bytes, int p, int end)	Returns code point for a character Oniguruma equivalent: mbc_to_code
(package private) static byte	trail0(int code)
(package private) static byte	trail0(long code)
(package private) static byte	trailS(int code, int shift)
(package private) static byte	trailS(long code, int shift)
private static boolean	utf8IsLead(int c)

Methods inherited from class UnicodeEncoding

applyAllCaseFold, caseFoldCodesByString, caseMap, ctypeCodeRange, isCodeCType, isInCodeRange, propertyNameToCType

Methods inherited from class MultiByteEncoding

isInRange, length, lengthForTwoUptoFour, mb2CodeToMbc, mb2CodeToMbcLength, mb2IsCodeCType, mb4CodeToMbc, mb4CodeToMbcLength, mb4IsCodeCType, mbnMbcCaseFold, mbnMbcToCode, missing, missing, safeLengthForUptoFour, safeLengthForUptoThree, safeLengthForUptoTwo, strCodeAt, strLength

Methods inherited from class AbstractEncoding

asciiApplyAllCaseFold, asciiCaseFoldCodesByString, asciiMbcCaseFold, isCodeCTypeInternal

Methods inherited from class Encoding

asciiToLower, asciiToUpper, digitVal, equals, getCharset, getIndex, getName, hashCode, isAlnum, isAlpha, isAscii, isAscii, isAsciiCompatible, isBlank, isCntrl, isDigit, isDummy, isFixedWidth, isGraph, isLower, isMbcAscii, isMbcCrnl, isMbcHead, isMbcWord, isNewLine, isPrint, isPunct, isSbWord, isSingleByte, isSpace, isUnicode, isUpper, isUTF8, isWord, isWordGraphPrint, isXDigit, load, load, maxLength, maxLengthDistance, mbcodeStartPosition, minLength, odigitVal, prevCharHead, rightAdjustCharHead, rightAdjustCharHeadWithPrev, setDummy, setName, setName, step, stepBack, strByteLengthNull, strLengthNull, strNCmp, toLowerCaseTable, toString, xdigitVal

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

USE_INVALID_CODE_SCHEME

static final boolean USE_INVALID_CODE_SCHEME

See Also:

• Constant Field Values

INVALID_CODE_FE

private static final int INVALID_CODE_FE

See Also:

• Constant Field Values

INVALID_CODE_FF

private static final int INVALID_CODE_FF

See Also:

• Constant Field Values

VALID_CODE_LIMIT

private static final int VALID_CODE_LIMIT

See Also:

• Constant Field Values

CESU8EncLen

private static final int[] CESU8EncLen

CESU8Trans

static final int[][] CESU8Trans

INSTANCE

public static final CESU8Encoding INSTANCE

Constructor Details

CESU8Encoding

protected CESU8Encoding()

Method Details

getCharsetName

public String getCharsetName()

Description copied from class: Encoding

The name of the equivalent Java Charset for this encoding. Defaults to the name of the encoding. Subclasses can override this to provide a different name.

Overrides:

getCharsetName in class UnicodeEncoding

Returns:

the name of the equivalent Java Charset for this encoding

length

public int length(byte[] bytes,
 int p,
 int end)

Description copied from class: Encoding

Returns character length given stream, character position and stream end returns 1 for singlebyte encodings or performs sanity validations for multibyte ones and returns the character length, missing characters in the stream otherwise

Specified by:

length in class Encoding

Returns:

0 Never > 0 Valid character, length returned -1 Illegal/malformed character < -1 (-1 - n) Number of missing bytes for character in p...end range Oniguruma equivalent: mbc_enc_len modified for 1.9 purposes,

lengthForOneUptoSix

private int lengthForOneUptoSix(byte[] bytes,
 int p,
 int end,
 int b,
 int s)

isNewLine

public boolean isNewLine(byte[] bytes,
 int p,
 int end)

Description copied from class: AbstractEncoding

onigenc_is_mbc_newline_0x0a / used also by multibyte encodings

Overrides:

isNewLine in class AbstractEncoding

codeToMbcLength

public int codeToMbcLength(int code)

Description copied from class: Encoding

Returns character length given a code point Oniguruma equivalent: code_to_mbclen

Specified by:

codeToMbcLength in class Encoding

mbcToCode

public int mbcToCode(byte[] bytes,
 int p,
 int end)

Description copied from class: Encoding

Returns code point for a character Oniguruma equivalent: mbc_to_code

Specified by:

mbcToCode in class Encoding

trailS

static byte trailS(int code,
 int shift)

trail0

static byte trail0(int code)

trailS

static byte trailS(long code,
 int shift)

trail0

static byte trail0(long code)

codeToMbc

public int codeToMbc(int code,
 byte[] bytes,
 int p)

Description copied from class: Encoding

Extracts code point into it's multibyte representation

Specified by:

codeToMbc in class Encoding

Returns:

character length for the given code point Oniguruma equivalent: code_to_mbc

mbcCaseFold

public int mbcCaseFold(int flag,
 byte[] bytes,
 IntHolder pp,
 int end,
 byte[] fold)

Description copied from class: AbstractEncoding

onigenc_ascii_mbc_case_fold

Overrides:

mbcCaseFold in class UnicodeEncoding

Parameters:

flag - case fold flag

pp - an IntHolder that points at character head

fold - a buffer where to extract case folded character Oniguruma equivalent: mbc_case_fold

ctypeCodeRange

public int[] ctypeCodeRange(int ctype,
 IntHolder sbOut)

Description copied from class: Encoding

Returns code range for a given character type Oniguruma equivalent: get_ctype_code_range

Specified by:

ctypeCodeRange in class Encoding

utf8IsLead

private static boolean utf8IsLead(int c)

leftAdjustCharHead

public int leftAdjustCharHead(byte[] bytes,
 int p,
 int s,
 int end)

Description copied from class: Encoding

Seeks the previous character head in a stream Oniguruma equivalent: left_adjust_char_head

Specified by:

leftAdjustCharHead in class Encoding

Parameters:

bytes - byte stream

p - position

s - stop

end - end

isReverseMatchAllowed

public boolean isReverseMatchAllowed(byte[] bytes,
 int p,
 int end)

Description copied from class: Encoding

Returns true if it's safe to use reversal Boyer-Moore search fail fast algorithm Oniguruma equivalent: is_allowed_reverse_match

Specified by:

isReverseMatchAllowed in class Encoding