Package org.jcodings.unicode

Class FixedWidthUnicodeEncoding

java.lang.Object

org.jcodings.Encoding

org.jcodings.AbstractEncoding

org.jcodings.MultiByteEncoding

org.jcodings.unicode.UnicodeEncoding

org.jcodings.unicode.FixedWidthUnicodeEncoding

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

UTF32BEEncoding, UTF32LEEncoding

public abstract class FixedWidthUnicodeEncoding
extends UnicodeEncoding

Nested Class Summary

Nested classes/interfaces inherited from class org.jcodings.unicode.UnicodeEncoding

UnicodeEncoding.CTypeName

Field Summary

Fields

Modifier and Type	Field	Description
protected int	shift

Fields inherited from class org.jcodings.unicode.UnicodeEncoding

CASE_MAPPING_SLACK, DOT_ABOVE, DOTLESS_i, I_WITH_DOT_ABOVE, UNICODE_ISO_8859_1_CTypeTable

Fields inherited from class org.jcodings.MultiByteEncoding

A, EncLen, F, Trans, TransZero

Fields inherited from class org.jcodings.Encoding

CHAR_INVALID, isUnicode, isUTF8, maxLength, minLength, NEW_LINE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FixedWidthUnicodeEncoding(java.lang.String name, int width)

Method Summary

Modifier and Type	Method	Description
int	codeToMbcLength(int code)	Returns character length given a code point Oniguruma equivalent: code_to_mbclen
int[]	ctypeCodeRange(int ctype, IntHolder sbOut)	onigenc_utf16_32_get_ctype_code_range
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 c)	Returns character length given character head returns 1 for singlebyte encodings or performs direct length table lookup for multibyte ones.
int	length(byte[] bytes, int p, int e)	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 static int	log2(int n)
int	strCodeAt(byte[] bytes, int p, int end, int index)
int	strLength(byte[] bytes, int p, int end)

Methods inherited from class org.jcodings.unicode.UnicodeEncoding

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

Methods inherited from class org.jcodings.MultiByteEncoding

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

Methods inherited from class org.jcodings.AbstractEncoding

asciiApplyAllCaseFold, asciiCaseFoldCodesByString, asciiMbcCaseFold, isCodeCTypeInternal, isNewLine

Methods inherited from class org.jcodings.Encoding

asciiToLower, asciiToUpper, codeToMbc, 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, mbcToCode, minLength, odigitVal, prevCharHead, rightAdjustCharHead, rightAdjustCharHeadWithPrev, setDummy, 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

shift

protected final int shift

Constructor Detail

FixedWidthUnicodeEncoding

protected FixedWidthUnicodeEncoding(java.lang.String name,
                                    int width)

Method Detail

length

public final int length(byte c)

Description copied from class: Encoding

Returns character length given character head returns 1 for singlebyte encodings or performs direct length table lookup for multibyte ones.

Overrides:

length in class MultiByteEncoding

Parameters:

c - Character head Oniguruma equivalent: mbc_enc_len To be deprecated very soon (use length(byte[]bytes, int p, int end) version)

length

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

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,

strLength

public final int strLength(byte[] bytes,
                           int p,
                           int end)

Overrides:

strLength in class MultiByteEncoding

strCodeAt

public final int strCodeAt(byte[] bytes,
                           int p,
                           int end,
                           int index)

Overrides:

strCodeAt in class MultiByteEncoding

codeToMbcLength

public final 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

ctypeCodeRange

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

onigenc_utf16_32_get_ctype_code_range

Specified by:

ctypeCodeRange in class Encoding

leftAdjustCharHead

public final 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 final 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

log2

private static int log2(int n)