Class CharsetUTF8

java.lang.Object

java.nio.charset.Charset

com.ibm.icu.charset.CharsetICU

com.ibm.icu.charset.CharsetUTF8

All Implemented Interfaces:

Comparable<Charset>

Direct Known Subclasses:

CharsetCESU8

class CharsetUTF8
extends CharsetICU

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	CharsetUTF8.CharsetDecoderUTF8
(package private) class	CharsetUTF8.CharsetEncoderUTF8

Field Summary

Fields

Modifier and Type	Field	Description
private static final int[]	BITMASK_FROM_UTF8
private static final byte[]	fromUSubstitution
private final boolean	isCESU8

Fields inherited from class CharsetICU

codepage, conversionType, hasFromUnicodeFallback, hasToUnicodeFallback, icuCanonicalName, maxBytesPerChar, maxCharsPerByte, minBytesPerChar, name, options, platform, ROUNDTRIP_AND_FALLBACK_SET, ROUNDTRIP_SET, subChar, subChar1, subCharLen, unicodeMask

Constructor Summary

Constructors

Constructor	Description
CharsetUTF8(String icuCanonicalName, String javaCanonicalName, String[] aliases)

Method Summary

Modifier and Type	Method	Description
private static final byte	encodeHeadOf1(int char32)
private static final byte	encodeHeadOf2(int char32)
private static final byte	encodeHeadOf3(int char32)
private static final byte	encodeHeadOf4(int char32)
private static final byte	encodeLastTail(int char32)
private static final byte	encodeSecondToLastTail(int char32)
private static final byte	encodeThirdToLastTail(int char32)
(package private) void	getUnicodeSetImpl(UnicodeSet setFillIn, int which)	This follows ucnv.c method ucnv_detectUnicodeSignature() to detect the start of the stream for example U+FEFF (the Unicode BOM/signature character) that can be ignored.
CharsetDecoder	newDecoder()
CharsetEncoder	newEncoder()

Methods inherited from class CharsetICU

contains, forNameICU, getCharset, getCompleteUnicodeSet, getNonSurrogateUnicodeSet, getUnicodeSet, isFixedWidth, isSurrogate

Methods inherited from class Charset

aliases, availableCharsets, canEncode, compareTo, decode, defaultCharset, displayName, displayName, encode, encode, equals, forName, hashCode, isRegistered, isSupported, name, toString

Methods inherited from class Object

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

Field Details

fromUSubstitution

private static final byte[] fromUSubstitution

BITMASK_FROM_UTF8

private static final int[] BITMASK_FROM_UTF8

isCESU8

private final boolean isCESU8

Constructor Details

CharsetUTF8

public CharsetUTF8(String icuCanonicalName,
 String javaCanonicalName,
 String[] aliases)

Method Details

encodeHeadOf1

private static final byte encodeHeadOf1(int char32)

encodeHeadOf2

private static final byte encodeHeadOf2(int char32)

encodeHeadOf3

private static final byte encodeHeadOf3(int char32)

encodeHeadOf4

private static final byte encodeHeadOf4(int char32)

encodeThirdToLastTail

private static final byte encodeThirdToLastTail(int char32)

encodeSecondToLastTail

private static final byte encodeSecondToLastTail(int char32)

encodeLastTail

private static final byte encodeLastTail(int char32)

newDecoder

public CharsetDecoder newDecoder()

Specified by:

newDecoder in class Charset

newEncoder

public CharsetEncoder newEncoder()

Specified by:

newEncoder in class Charset

getUnicodeSetImpl

void getUnicodeSetImpl(UnicodeSet setFillIn,
 int which)

Description copied from class: CharsetICU

This follows ucnv.c method ucnv_detectUnicodeSignature() to detect the start of the stream for example U+FEFF (the Unicode BOM/signature character) that can be ignored. Detects Unicode signature byte sequences at the start of the byte stream and returns number of bytes of the BOM of the indicated Unicode charset. 0 is returned when no Unicode signature is recognized.

Specified by:

getUnicodeSetImpl in class CharsetICU