Modifier and Type	Class and Description
private static class	JISAutoDetect.Decoder

Modifier and Type	Field and Description
private static final int	EUCJP_KANA1_MASK
private static final int	EUCJP_KANA2_MASK
private static final int	EUCJP_MASK
private static final int	SJIS1B_MASK
private static final int	SJIS2B_MASK

Access	Constructor and Description
public	JISAutoDetect()

Modifier and Type	Method and Description
public boolean	canEncode() Overrides java.nio.charset.Charset.canEncode. Tells whether or not this charset supports encoding.
public boolean	contains(Charset cs) Implements abstract java.nio.charset.Charset.contains. Tells whether or not this charset contains the given charset.
public String	historicalName() Implements sun.nio.cs.HistoricallyNamedCharset.historicalName.
private static boolean	looksLikeJapanese(CharBuffer cb)
public CharsetDecoder	newDecoder() Implements abstract java.nio.charset.Charset.newDecoder. Constructs a new decoder for this charset.
public CharsetEncoder	newEncoder() Implements abstract java.nio.charset.Charset.newEncoder. Constructs a new encoder for this charset.

EUCJP_KANA1_MASK	back to summary
private static final int EUCJP_KANA1_MASK

EUCJP_KANA2_MASK	back to summary
private static final int EUCJP_KANA2_MASK

EUCJP_MASK	back to summary
private static final int EUCJP_MASK

SJIS1B_MASK	back to summary
private static final int SJIS1B_MASK

SJIS2B_MASK	back to summary
private static final int SJIS2B_MASK

JISAutoDetect	back to summary
public JISAutoDetect()

Method Detail

canEncode back to summary

canEncode	back to summary
public boolean canEncode() Overrides java.nio.charset.Charset.canEncode. Doc from java.nio.charset.Charset.canEncode. Tells whether or not this charset supports encoding. Nearly all charsets support encoding. The primary exceptions are special-purpose auto-detect charsets whose decoders can determine which of several possible encoding schemes is in use by examining the input byte sequence. Such charsets do not support encoding because there is no way to determine which encoding should be used on output. Implementations of such charsets should override this method to return `false`.

public boolean canEncode()

Overrides java.nio.charset.Charset.canEncode.

Doc from java.nio.charset.Charset.canEncode.

Tells whether or not this charset supports encoding.

Nearly all charsets support encoding. The primary exceptions are special-purpose auto-detect charsets whose decoders can determine which of several possible encoding schemes is in use by examining the input byte sequence. Such charsets do not support encoding because there is no way to determine which encoding should be used on output. Implementations of such charsets should override this method to return false.

contains back to summary

contains	back to summary
public boolean contains(Charset cs) Implements abstract java.nio.charset.Charset.contains. Doc from java.nio.charset.Charset.contains. Tells whether or not this charset contains the given charset. A charset C is said to contain a charset D if, and only if, every character representable in D is also representable in C. If this relationship holds then it is guaranteed that every string that can be encoded in D can also be encoded in C without performing any replacements. That C contains D does not imply that each character representable in C by a particular byte sequence is represented in D by the same byte sequence, although sometimes this is the case. Every charset contains itself. This method computes an approximation of the containment relation: If it returns `true` then the given charset is known to be contained by this charset; if it returns `false`, however, then it is not necessarily the case that the given charset is not contained in this charset.

public boolean contains(Charset cs)

Implements abstract java.nio.charset.Charset.contains.

Doc from java.nio.charset.Charset.contains.

Tells whether or not this charset contains the given charset.

A charset C is said to contain a charset D if, and only if, every character representable in D is also representable in C. If this relationship holds then it is guaranteed that every string that can be encoded in D can also be encoded in C without performing any replacements.

That C contains D does not imply that each character representable in C by a particular byte sequence is represented in D by the same byte sequence, although sometimes this is the case.

Every charset contains itself.

This method computes an approximation of the containment relation: If it returns true then the given charset is known to be contained by this charset; if it returns false, however, then it is not necessarily the case that the given charset is not contained in this charset.

historicalName	back to summary
public String historicalName() Implements sun.nio.cs.HistoricallyNamedCharset.historicalName.

looksLikeJapanese	back to summary
private static boolean looksLikeJapanese(CharBuffer cb)

newDecoder	back to summary
public CharsetDecoder newDecoder() Implements abstract java.nio.charset.Charset.newDecoder. Doc from java.nio.charset.Charset.newDecoder. Constructs a new decoder for this charset.

newDecoder

back to summary

public CharsetDecoder newDecoder()

Implements abstract java.nio.charset.Charset.newDecoder.

Doc from java.nio.charset.Charset.newDecoder.

Constructs a new decoder for this charset.

newEncoder	back to summary
public CharsetEncoder newEncoder() Implements abstract java.nio.charset.Charset.newEncoder. Doc from java.nio.charset.Charset.newEncoder. Constructs a new encoder for this charset.

newEncoder

back to summary

public CharsetEncoder newEncoder()

Implements abstract java.nio.charset.Charset.newEncoder.

Doc from java.nio.charset.Charset.newEncoder.

Constructs a new encoder for this charset.

sun.nio.cs.ext back to summary

private Class JISAutoDetect.Decoder

Class Inheritance

extends CharsetDecoder

java.lang.Object
java.nio.charset.CharsetDecoder
sun.nio.cs.ext.JISAutoDetect.Decoder

Field Summary

Modifier and Type	Field and Description
private DelegatableDecoder	detectedDecoder
private static final String	EUCJPName
private static final String	SJISName

Constructor Summary

Access	Constructor and Description
public	Decoder(Charset cs)

Method Summary

Modifier and Type	Method and Description
private static void	copyLeadingASCII(ByteBuffer src, CharBuffer dst)
private CoderResult	decodeLoop(DelegatableDecoder decoder, ByteBuffer src, CharBuffer dst)
protected CoderResult	decodeLoop(ByteBuffer src, CharBuffer dst) Implements abstract java.nio.charset.CharsetDecoder.decodeLoop. Decodes one or more bytes into one or more characters.
public Charset	detectedCharset() Overrides java.nio.charset.CharsetDecoder.detectedCharset. Retrieves the charset that was detected by this decoder (optional operation).
private static String	getSJISName() Returned Shift_JIS Charset name is OS dependent
protected CoderResult	implFlush(CharBuffer out) Overrides java.nio.charset.CharsetDecoder.implFlush. Flushes this decoder.
protected void	implReset() Overrides java.nio.charset.CharsetDecoder.implReset. Resets this decoder, clearing any charset-specific internal state.
public boolean	isAutoDetecting() Overrides java.nio.charset.CharsetDecoder.isAutoDetecting. Tells whether or not this decoder implements an auto-detecting charset.
public boolean	isCharsetDetected() Overrides java.nio.charset.CharsetDecoder.isCharsetDetected. Tells whether or not this decoder has yet detected a charset (optional operation).
private static boolean	isPlainASCII(byte b)

Inherited from java.nio.charset.CharsetDecoder:: averageCharsPerByte charset decode decode flush implOnMalformedInput implOnUnmappableCharacter implReplaceWith malformedInputAction maxCharsPerByte onMalformedInput onUnmappableCharacter replacement replaceWith reset unmappableCharacterAction

Field Detail

detectedDecoder	back to summary
private DelegatableDecoder detectedDecoder

EUCJPName	back to summary
private static final String EUCJPName

SJISName	back to summary
private static final String SJISName

Constructor Detail

Decoder	back to summary
public Decoder(Charset cs)

Method Detail

copyLeadingASCII	back to summary
private static void copyLeadingASCII(ByteBuffer src, CharBuffer dst)

decodeLoop	back to summary
private CoderResult decodeLoop(DelegatableDecoder decoder, ByteBuffer src, CharBuffer dst)

decodeLoop back to summary

decodeLoop	back to summary
protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) Implements abstract java.nio.charset.CharsetDecoder.decodeLoop. Doc from java.nio.charset.CharsetDecoder.decodeLoop. Decodes one or more bytes into one or more characters. This method encapsulates the basic decoding loop, decoding as many bytes as possible until it either runs out of input, runs out of room in the output buffer, or encounters a decoding error. This method is invoked by the `decode` method, which handles result interpretation and error recovery. The buffers are read from, and written to, starting at their current positions. At most `in.remaining()` bytes will be read, and at most `out.remaining()` characters will be written. The buffers' positions will be advanced to reflect the bytes read and the characters written, but their marks and limits will not be modified. This method returns a `CoderResult` object to describe its reason for termination, in the same manner as the `decode` method. Most implementations of this method will handle decoding errors by returning an appropriate result object for interpretation by the `decode` method. An optimized implementation may instead examine the relevant error action and implement that action itself. An implementation of this method may perform arbitrary lookahead by returning `CoderResult#UNDERFLOW` until it receives sufficient input.

protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst)

Implements abstract java.nio.charset.CharsetDecoder.decodeLoop.

Doc from java.nio.charset.CharsetDecoder.decodeLoop.

Decodes one or more bytes into one or more characters.

This method encapsulates the basic decoding loop, decoding as many bytes as possible until it either runs out of input, runs out of room in the output buffer, or encounters a decoding error. This method is invoked by the decode method, which handles result interpretation and error recovery.

The buffers are read from, and written to, starting at their current positions. At most in.remaining() bytes will be read, and at most out.remaining() characters will be written. The buffers' positions will be advanced to reflect the bytes read and the characters written, but their marks and limits will not be modified.

This method returns a CoderResult object to describe its reason for termination, in the same manner as the decode method. Most implementations of this method will handle decoding errors by returning an appropriate result object for interpretation by the decode method. An optimized implementation may instead examine the relevant error action and implement that action itself.

An implementation of this method may perform arbitrary lookahead by returning CoderResult#UNDERFLOW until it receives sufficient input.

detectedCharset back to summary

detectedCharset	back to summary
public Charset detectedCharset() Overrides java.nio.charset.CharsetDecoder.detectedCharset. Doc from java.nio.charset.CharsetDecoder.detectedCharset. Retrieves the charset that was detected by this decoder (optional operation). If this decoder implements an auto-detecting charset then this method returns the actual charset once it has been detected. After that point, this method returns the same value for the duration of the current decoding operation. If not enough input bytes have yet been read to determine the actual charset then this method throws an `IllegalStateException`. The default implementation of this method always throws an `UnsupportedOperationException`; it should be overridden by auto-detecting decoders to return the appropriate value.

public Charset detectedCharset()

Overrides java.nio.charset.CharsetDecoder.detectedCharset.

Doc from java.nio.charset.CharsetDecoder.detectedCharset.

Retrieves the charset that was detected by this decoder (optional operation).

If this decoder implements an auto-detecting charset then this method returns the actual charset once it has been detected. After that point, this method returns the same value for the duration of the current decoding operation. If not enough input bytes have yet been read to determine the actual charset then this method throws an IllegalStateException.

The default implementation of this method always throws an UnsupportedOperationException; it should be overridden by auto-detecting decoders to return the appropriate value.

getSJISName	back to summary
private static String getSJISName() Returned Shift_JIS Charset name is OS dependent

implFlush back to summary

implFlush	back to summary
protected CoderResult implFlush(CharBuffer out) Overrides java.nio.charset.CharsetDecoder.implFlush. Doc from java.nio.charset.CharsetDecoder.implFlush. Flushes this decoder. The default implementation of this method does nothing, and always returns `CoderResult#UNDERFLOW`. This method should be overridden by decoders that may need to write final characters to the output buffer once the entire input sequence has been read.

protected CoderResult implFlush(CharBuffer out)

Overrides java.nio.charset.CharsetDecoder.implFlush.

Doc from java.nio.charset.CharsetDecoder.implFlush.

Flushes this decoder.

The default implementation of this method does nothing, and always returns CoderResult#UNDERFLOW. This method should be overridden by decoders that may need to write final characters to the output buffer once the entire input sequence has been read.

implReset	back to summary
protected void implReset() Overrides java.nio.charset.CharsetDecoder.implReset. Doc from java.nio.charset.CharsetDecoder.implReset. Resets this decoder, clearing any charset-specific internal state. The default implementation of this method does nothing. This method should be overridden by decoders that maintain internal state.

implReset

back to summary

protected void implReset()

Overrides java.nio.charset.CharsetDecoder.implReset.

Doc from java.nio.charset.CharsetDecoder.implReset.

Resets this decoder, clearing any charset-specific internal state.

The default implementation of this method does nothing. This method should be overridden by decoders that maintain internal state.

isAutoDetecting back to summary

isAutoDetecting	back to summary
public boolean isAutoDetecting() Overrides java.nio.charset.CharsetDecoder.isAutoDetecting. Doc from java.nio.charset.CharsetDecoder.isAutoDetecting. Tells whether or not this decoder implements an auto-detecting charset. The default implementation of this method always returns `false`; it should be overridden by auto-detecting decoders to return `true`.

public boolean isAutoDetecting()

Overrides java.nio.charset.CharsetDecoder.isAutoDetecting.

Doc from java.nio.charset.CharsetDecoder.isAutoDetecting.

Tells whether or not this decoder implements an auto-detecting charset.

The default implementation of this method always returns false; it should be overridden by auto-detecting decoders to return true.

isCharsetDetected back to summary

isCharsetDetected	back to summary
public boolean isCharsetDetected() Overrides java.nio.charset.CharsetDecoder.isCharsetDetected. Doc from java.nio.charset.CharsetDecoder.isCharsetDetected. Tells whether or not this decoder has yet detected a charset (optional operation). If this decoder implements an auto-detecting charset then at a single point during a decoding operation this method may start returning `true` to indicate that a specific charset has been detected in the input byte sequence. Once this occurs, the `detectedCharset` method may be invoked to retrieve the detected charset. That this method returns `false` does not imply that no bytes have yet been decoded. Some auto-detecting decoders are capable of decoding some, or even all, of an input byte sequence without fixing on a particular charset. The default implementation of this method always throws an `UnsupportedOperationException`; it should be overridden by auto-detecting decoders to return `true` once the input charset has been determined.

public boolean isCharsetDetected()

Overrides java.nio.charset.CharsetDecoder.isCharsetDetected.

Doc from java.nio.charset.CharsetDecoder.isCharsetDetected.

Tells whether or not this decoder has yet detected a charset (optional operation).

If this decoder implements an auto-detecting charset then at a single point during a decoding operation this method may start returning true to indicate that a specific charset has been detected in the input byte sequence. Once this occurs, the detectedCharset method may be invoked to retrieve the detected charset.

That this method returns false does not imply that no bytes have yet been decoded. Some auto-detecting decoders are capable of decoding some, or even all, of an input byte sequence without fixing on a particular charset.

The default implementation of this method always throws an UnsupportedOperationException; it should be overridden by auto-detecting decoders to return true once the input charset has been determined.

isPlainASCII	back to summary
private static boolean isPlainASCII(byte b)

public Class JISAutoDetect

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class JISAutoDetect.Decoder

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail