Package org.apache.commons.io.input

Class CharSequenceInputStream

java.lang.Object

java.io.InputStream

org.apache.commons.io.input.CharSequenceInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

public class CharSequenceInputStream
extends InputStream

InputStream implementation that can read from String, StringBuffer, StringBuilder or CharBuffer.

Note: Supports mark(int) and reset().

Since:

2.2

Field Summary

Fields

Modifier and Type	Field	Description
private final ByteBuffer	bbuf
private static final int	BUFFER_SIZE
private final CharBuffer	cbuf
private final CharsetEncoder	encoder
private int	mark_bbuf
private int	mark_cbuf
private static final int	NO_MARK

Constructor Summary

Constructors

Constructor	Description
CharSequenceInputStream(CharSequence cs, String charset)	Constructor, calls CharSequenceInputStream(CharSequence, String, int) with a buffer size of 2048.
CharSequenceInputStream(CharSequence cs, String charset, int bufferSize)	Constructor, calls CharSequenceInputStream(CharSequence, Charset, int).
CharSequenceInputStream(CharSequence cs, Charset charset)	Constructor, calls CharSequenceInputStream(CharSequence, Charset, int) with a buffer size of 2048.
CharSequenceInputStream(CharSequence cs, Charset charset, int bufferSize)	Constructor.

Method Summary

Modifier and Type	Method	Description
int	available()	Return an estimate of the number of bytes remaining in the byte stream.
void	close()
private void	fillBuffer()	Fills the byte output buffer from the input char buffer.
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] array, int off, int len)
void	reset()
long	skip(long n)

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Details

BUFFER_SIZE

private static final int BUFFER_SIZE

See Also:

• Constant Field Values

NO_MARK

private static final int NO_MARK

See Also:

• Constant Field Values

encoder

private final CharsetEncoder encoder

cbuf

private final CharBuffer cbuf

bbuf

private final ByteBuffer bbuf

mark_cbuf

private int mark_cbuf

mark_bbuf

private int mark_bbuf

Constructor Details

CharSequenceInputStream

public CharSequenceInputStream(CharSequence cs,
 Charset charset,
 int bufferSize)

Constructor.

Parameters:

cs - the input character sequence

charset - the character set name to use

bufferSize - the buffer size to use.

Throws:

IllegalArgumentException - if the buffer is not large enough to hold a complete character

CharSequenceInputStream

public CharSequenceInputStream(CharSequence cs,
 String charset,
 int bufferSize)

Constructor, calls CharSequenceInputStream(CharSequence, Charset, int).

Parameters:

cs - the input character sequence

charset - the character set name to use

bufferSize - the buffer size to use.

Throws:

IllegalArgumentException - if the buffer is not large enough to hold a complete character

CharSequenceInputStream

public CharSequenceInputStream(CharSequence cs,
 Charset charset)

Constructor, calls CharSequenceInputStream(CharSequence, Charset, int) with a buffer size of 2048.

Parameters:

cs - the input character sequence

charset - the character set name to use

Throws:

IllegalArgumentException - if the buffer is not large enough to hold a complete character

CharSequenceInputStream

public CharSequenceInputStream(CharSequence cs,
 String charset)

Constructor, calls CharSequenceInputStream(CharSequence, String, int) with a buffer size of 2048.

Parameters:

cs - the input character sequence

charset - the character set name to use

Throws:

IllegalArgumentException - if the buffer is not large enough to hold a complete character

Method Details

fillBuffer

private void fillBuffer()
                 throws CharacterCodingException

Fills the byte output buffer from the input char buffer.

Throws:

CharacterCodingException - an error encoding data

read

public int read(byte[] array,
 int off,
 int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

skip

public long skip(long n)
          throws IOException

Overrides:

skip in class InputStream

Throws:

IOException

available

public int available()
              throws IOException

Return an estimate of the number of bytes remaining in the byte stream.

Overrides:

available in class InputStream

Returns:

the count of bytes that can be read without blocking (or returning EOF).

Throws:

IOException - if an error occurs (probably not possible)

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

mark

public void mark(int readlimit)

Overrides:

mark in class InputStream

Parameters:

readlimit - max read limit (ignored)

reset

public void reset()
           throws IOException

Overrides:

reset in class InputStream

Throws:

IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class InputStream