Class GB18030Encoding

java.lang.Object

org.jcodings.Encoding

org.jcodings.AbstractEncoding

org.jcodings.MultiByteEncoding

org.jcodings.specific.GB18030Encoding

All Implemented Interfaces:

Cloneable

public final class GB18030Encoding
extends MultiByteEncoding

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static enum	GB18030Encoding.State

Field Summary

Fields

Modifier and Type	Field	Description
private static final int	C1
private static final int	C2
private static final int	C4
private static final int	CM
private static final String	GB18030
private static final int[]	GB18030_MAP
private static final int[][]	GB18030Trans
static final GB18030Encoding	INSTANCE

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	GB18030Encoding()

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	isCodeCType(int code, int ctype)	Perform a check whether given code is of given character type (e.g.
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 start, 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	lengthForThreeUptoFour(byte[] bytes, int p, int end, int s)
private int	lengthForTwoUptoFour(byte[] bytes, int p, int end, int s)
int	mbcCaseFold(int flag, byte[] bytes, IntHolder pp, int end, byte[] lower)	onigenc_ascii_mbc_case_fold
int	mbcToCode(byte[] bytes, int p, int end)	Returns code point for a character Oniguruma equivalent: mbc_to_code

Methods inherited from class MultiByteEncoding

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

Methods inherited from class AbstractEncoding

applyAllCaseFold, asciiApplyAllCaseFold, asciiCaseFoldCodesByString, asciiMbcCaseFold, caseFoldCodesByString, isCodeCTypeInternal, isNewLine, propertyNameToCType

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

GB18030

private static final String GB18030

See Also:

• Constant Field Values

C1

private static final int C1

See Also:

• Constant Field Values

C2

private static final int C2

See Also:

• Constant Field Values

C4

private static final int C4

See Also:

• Constant Field Values

CM

private static final int CM

See Also:

• Constant Field Values

GB18030_MAP

private static final int[] GB18030_MAP

GB18030Trans

private static final int[][] GB18030Trans

INSTANCE

public static final GB18030Encoding INSTANCE

Constructor Details

GB18030Encoding

protected GB18030Encoding()

Method Details

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,

lengthForTwoUptoFour

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

lengthForThreeUptoFour

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

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

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

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[] lower)

Description copied from class: AbstractEncoding

onigenc_ascii_mbc_case_fold

Overrides:

mbcCaseFold in class AbstractEncoding

Parameters:

flag - case fold flag

pp - an IntHolder that points at character head

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

isCodeCType

public boolean isCodeCType(int code,
 int ctype)

Description copied from class: Encoding

Perform a check whether given code is of given character type (e.g. used by isWord(someByte) and similar methods)

Specified by:

isCodeCType in class Encoding

Parameters:

code - a code point of a character

ctype - a character type to check against Oniguruma equivalent: is_code_ctype

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

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 Encoding

Returns:

the name of the equivalent Java Charset for this encoding

leftAdjustCharHead

public int leftAdjustCharHead(byte[] bytes,
 int start,
 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

start - 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