org.jcodings.specific
Class UTF8Encoding

java.lang.Object
  org.jcodings.Encoding
      org.jcodings.MultiByteEncoding
          org.jcodings.unicode.UnicodeEncoding
              org.jcodings.specific.UTF8Encoding

All Implemented Interfaces:

Cloneable

public final class UTF8Encoding
extends UnicodeEncoding

Field Summary

protected static CaseFoldCodeItem[]	EMPTY_FOLD_CODES
static UTF8Encoding	INSTANCE

Fields inherited from class org.jcodings.MultiByteEncoding

A, EncLen, F, Trans, TransZero

Fields inherited from class org.jcodings.Encoding

CHAR_INVALID, hashCode, isAsciiCompatible, isDummy, isFixedWidth, isSingleByte, maxLength, minLength, name, NEW_LINE

Constructor Summary

protected

UTF8Encoding()

Method Summary

protected void	asciiApplyAllCaseFold(int flag, ApplyAllCaseFoldFunction fun, Object arg)
protected CaseFoldCodeItem[]	asciiCaseFoldCodesByString(int flag, byte[] bytes, int p, int end)
protected int	asciiMbcCaseFold(int flag, byte[] bytes, IntHolder pp, int end, byte[] lower)
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) utf8_get_ctype_code_range
protected boolean	isCodeCTypeInternal(int code, int ctype) ONIGENC_IS_XXXXXX_CODE_CTYPE
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) onigenc_always_true_is_allowed_reverse_match
int	leftAdjustCharHead(byte[] bytes, int p, int s, int end) utf8_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
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

Methods inherited from class org.jcodings.unicode.UnicodeEncoding

applyAllCaseFold, caseFoldCodesByString, ctypeCodeRange, isCodeCType, propertyNameToCType

Methods inherited from class org.jcodings.MultiByteEncoding

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

Methods inherited from class org.jcodings.Encoding

asciiToLower, asciiToUpper, digitVal, equals, 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, isUpper, isWord, isWordGraphPrint, isXDigit, load, maxLength, maxLengthDistance, mbcodeStartPosition, minLength, odigitVal, prevCharHead, replicate, rightAdjustCharHead, rightAdjustCharHeadWithPrev, setName, setName, step, stepBack, strByteLengthNull, strLengthNull, strNCmp, toLowerCaseTable, toString, xdigitVal

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final UTF8Encoding INSTANCE

EMPTY_FOLD_CODES

protected static final CaseFoldCodeItem[] EMPTY_FOLD_CODES

Constructor Detail

UTF8Encoding

protected UTF8Encoding()

Method Detail

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,

isNewLine

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

onigenc_is_mbc_newline_0x0a / used also by multibyte encodings

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

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)

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)

utf8_get_ctype_code_range

Specified by:

ctypeCodeRange in class Encoding

leftAdjustCharHead

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

utf8_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)

onigenc_always_true_is_allowed_reverse_match

Specified by:

isReverseMatchAllowed in class Encoding

isCodeCTypeInternal

protected final boolean isCodeCTypeInternal(int code,
                                            int ctype)

ONIGENC_IS_XXXXXX_CODE_CTYPE

asciiMbcCaseFold

protected final int asciiMbcCaseFold(int flag,
                                     byte[] bytes,
                                     IntHolder pp,
                                     int end,
                                     byte[] lower)

asciiApplyAllCaseFold

protected final void asciiApplyAllCaseFold(int flag,
                                           ApplyAllCaseFoldFunction fun,
                                           Object arg)

asciiCaseFoldCodesByString

protected final CaseFoldCodeItem[] asciiCaseFoldCodesByString(int flag,
                                                              byte[] bytes,
                                                              int p,
                                                              int end)