org.armedbear.lisp.util

Class DecodingReader

java.lang.Object

java.io.Reader

java.io.FilterReader

java.io.PushbackReader

org.armedbear.lisp.util.DecodingReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class DecodingReader
extends java.io.PushbackReader

Class to support mid-stream change of character encoding to support setExternalFormat operation in Stream.java Note: extends PushbackReader, but only for its interface; all methods are overridden.

Field Summary

Fields inherited from class java.io.FilterReader

in

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
DecodingReader(java.io.InputStream stream, int size, java.nio.charset.Charset cs)

Method Summary

Modifier and Type	Method and Description
void	close()
java.nio.charset.Charset	getCharset() Get the Charset used to decode bytes from the input stream.
void	mark(int readAheadLimit)
boolean	markSupported()
int	read()
int	read(char[] cbuf)
int	read(char[] cbuf, int off, int len)
int	read(java.nio.CharBuffer cb)
boolean	ready()
void	reset()
void	setCharset(java.nio.charset.Charset cs) Change the Charset used to decode bytes from the input stream into characters.
long	skip(long n) Skips 'n' characters, or as many as can be read off the stream before its end.
void	unread(char[] cbuf)
void	unread(char[] cbuf, int off, int len) Unread the character array into the reader.
void	unread(int c) Unread a single code point.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DecodingReader

public DecodingReader(java.io.InputStream stream,
                      int size,
                      java.nio.charset.Charset cs)

Method Detail

setCharset

public final void setCharset(java.nio.charset.Charset cs)

Change the Charset used to decode bytes from the input stream into characters.

getCharset

public final java.nio.charset.Charset getCharset()

Get the Charset used to decode bytes from the input stream.

close

public final void close()
                 throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.PushbackReader

Throws:

java.io.IOException

mark

public final void mark(int readAheadLimit)
                throws java.io.IOException

Overrides:

mark in class java.io.PushbackReader

Throws:

java.io.IOException

markSupported

public final boolean markSupported()

Overrides:

markSupported in class java.io.PushbackReader

ready

public final boolean ready()
                    throws java.io.IOException

Overrides:

ready in class java.io.PushbackReader

Throws:

java.io.IOException

reset

public final void reset()
                 throws java.io.IOException

Overrides:

reset in class java.io.PushbackReader

Throws:

java.io.IOException

skip

public final long skip(long n)
                throws java.io.IOException

Skips 'n' characters, or as many as can be read off the stream before its end. Returns the number of characters actually skipped

Overrides:

skip in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public final void unread(int c)
                  throws java.io.IOException

Unread a single code point. Decomposes the code point into UTF-16 surrogate pairs and unreads them using the char[] unreader function.

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public final void unread(char[] cbuf,
                         int off,
                         int len)
                  throws java.io.IOException

Unread the character array into the reader. Decodes the characters in the array into bytes, allowing the encoding to be changed before reading from the stream again, using a different charset.

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

unread

public final void unread(char[] cbuf)
                  throws java.io.IOException

Overrides:

unread in class java.io.PushbackReader

Throws:

java.io.IOException

read

public final int read()
               throws java.io.IOException

Overrides:

read in class java.io.PushbackReader

Throws:

java.io.IOException

read

public final int read(char[] cbuf,
                      int off,
                      int len)
               throws java.io.IOException

Overrides:

read in class java.io.PushbackReader

Throws:

java.io.IOException

read

public final int read(java.nio.CharBuffer cb)
               throws java.io.IOException

Specified by:

read in interface java.lang.Readable

Overrides:

read in class java.io.Reader

Throws:

java.io.IOException

read

public final int read(char[] cbuf)
               throws java.io.IOException

Overrides:

read in class java.io.Reader

Throws:

java.io.IOException