com.ibm.commons.util.io
Class ReaderInputStream

java.lang.Object
  java.io.InputStream
      com.ibm.commons.util.io.ReaderInputStream

All Implemented Interfaces:

java.io.Closeable

public class ReaderInputStream
extends java.io.InputStream

InputStream that reads its data from a reader.

Constructor Summary

ReaderInputStream(java.io.Reader reader)
Construct a ReaderInputStream for the specified Reader.

ReaderInputStream(java.io.Reader reader, java.lang.String encoding)
Construct a ReaderInputStream for the specified Reader, with the specified encoding.

Method Summary

int	available()
void	close() Closes the reader.
void	mark(int limit) Marks the read limit of the StringReader.
boolean	markSupported()
int	read() Reads from the Reader, returning the same value.
int	read(byte[] b, int off, int len) Reads from the Reader into a byte array
void	reset() Resets the StringReader.

Methods inherited from class java.io.InputStream

read, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

ReaderInputStream

public ReaderInputStream(java.io.Reader reader)

Construct a ReaderInputStream for the specified Reader.

Parameters:

reader - Reader. Must not be null.

ReaderInputStream

public ReaderInputStream(java.io.Reader reader,
                         java.lang.String encoding)

Construct a ReaderInputStream for the specified Reader, with the specified encoding.

Parameters:

reader - non-null Reader.

encoding - non-null String encoding.

Method Detail

read

public int read()
         throws java.io.IOException

Reads from the Reader, returning the same value.

Specified by:

read in class java.io.InputStream

Returns:

the value of the next character in the Reader.

Throws:

java.io.IOException - if the original Reader fails to be read

read

public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException

Reads from the Reader into a byte array

Overrides:

read in class java.io.InputStream

Parameters:

b - the byte array to read into

off - the offset in the byte array

len - the length in the byte array to fill

Returns:

the actual number read into the byte array, -1 at the end of the stream

Throws:

java.io.IOException - if an error occurs

mark

public void mark(int limit)

Marks the read limit of the StringReader.

Overrides:

mark in class java.io.InputStream

Parameters:

limit - the maximum limit of bytes that can be read before the mark position becomes invalid

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Returns:

the current number of bytes ready for reading

Throws:

java.io.IOException - if an error occurs

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.InputStream

Returns:

false - mark is not supported

reset

public void reset()
           throws java.io.IOException

Resets the StringReader.

Overrides:

reset in class java.io.InputStream

Throws:

java.io.IOException - if the StringReader fails to be reset

close

public void close()
           throws java.io.IOException

Closes the reader.

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException - if the original StringReader fails to be closed