org.globus.wsrf.utils
Class StringBufferReader

java.lang.Object
  java.io.Reader
      org.globus.wsrf.utils.StringBufferReader

All Implemented Interfaces:

java.io.Closeable, java.lang.Readable

public class StringBufferReader
extends java.io.Reader

StringBufferReader based on StringReader (Sun's code) code in Java.

Field Summary

private int	length
private int	mark
private int	next
private java.lang.StringBuffer	str

Fields inherited from class java.io.Reader

lock

Constructor Summary

StringBufferReader(java.lang.StringBuffer s)
Create a new string buffer reader.

Method Summary

void	close() Close the stream.
private void	ensureOpen() Check to make sure that the stream has not been closed
void	mark(int readAheadLimit) Mark the present position in the stream.
boolean	markSupported() Tell whether this stream supports the mark() operation, which it does.
int	read() Read a single character.
int	read(char[] cbuf, int off, int len) Read characters into a portion of an array.
boolean	ready() Tell whether this stream is ready to be read.
void	reset() Reset the stream to the most recent mark, or to the beginning of the string if it has never been marked.
long	skip(long ns) Skip characters.

Methods inherited from class java.io.Reader

read, read

Methods inherited from class java.lang.Object

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

Field Detail

str

private java.lang.StringBuffer str

length

private int length

next

private int next

mark

private int mark

Constructor Detail

StringBufferReader

public StringBufferReader(java.lang.StringBuffer s)

Create a new string buffer reader.

Parameters:

s - StringBuffer providing the character stream.

Method Detail

ensureOpen

private void ensureOpen()
                 throws java.io.IOException

Check to make sure that the stream has not been closed

Throws:

java.io.IOException

read

public int read()
         throws java.io.IOException

Read a single character.

Overrides:

read in class java.io.Reader

Returns:

The character read, or -1 if the end of the stream has been reached

Throws:

java.io.IOException - If an I/O error occurs

read

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

Read characters into a portion of an array.

Specified by:

read in class java.io.Reader

Parameters:

cbuf - Destination buffer

off - Offset at which to start writing characters

len - Maximum number of characters to read

Returns:

The number of characters read, or -1 if the end of the stream has been reached

Throws:

java.io.IOException - If an I/O error occurs

skip

public long skip(long ns)
          throws java.io.IOException

Skip characters.

Overrides:

skip in class java.io.Reader

Throws:

java.io.IOException - If an I/O error occurs

ready

public boolean ready()
              throws java.io.IOException

Tell whether this stream is ready to be read.

Overrides:

ready in class java.io.Reader

Returns:

True if the next read() is guaranteed not to block for input

Throws:

java.io.IOException - If the stream is closed

markSupported

public boolean markSupported()

Tell whether this stream supports the mark() operation, which it does.

Overrides:

markSupported in class java.io.Reader

mark

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

Mark the present position in the stream. Subsequent calls to reset() will reposition the stream to this point.

Overrides:

mark in class java.io.Reader

Parameters:

readAheadLimit - Limit on the number of characters that may be read while still preserving the mark. Because the stream's input comes from a string, there is no actual limit, so this argument must not be negative, but is otherwise ignored.

Throws:

java.lang.IllegalArgumentException - If readAheadLimit is < 0

java.io.IOException - If an I/O error occurs

reset

public void reset()
           throws java.io.IOException

Reset the stream to the most recent mark, or to the beginning of the string if it has never been marked.

Overrides:

reset in class java.io.Reader

Throws:

java.io.IOException - If an I/O error occurs

close

public void close()

Close the stream.

Specified by:

close in interface java.io.Closeable

Specified by:

close in class java.io.Reader