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## org.ka2ddo.yaac.io
Class NonshareableBufferedReader

    java.lang.Object
      java.io.Reader
          org.ka2ddo.yaac.io.NonshareableBufferedReader

All Implemented Interfaces:
  java.io.Closeable, java.lang.Readable

    public class NonshareableBufferedReader

extends java.io.Reader

This class implements a version of BufferedReader that can only be used by one thread. It has no synchronization, and it doesn't have all the extra features of BufferedReader that slow it down.

Field Summary

Fields inherited from class java.io.Reader
`lock`

Constructor Summary
`NonshareableBufferedReader(java.io.Reader in, int sz)` Creates a buffering character-input stream that uses an input buffer of the specified size.

Method Summary
`void` | `close()` Close the Reader.
`void` | `mark(int readAheadLimit)` Marks the present position in the stream.
`boolean` | `markSupported()` Tells whether this stream supports the mark() operation, which it does.
`int` | `read()` Reads a single character.
`int` | `read(char[] cbuf, int off, int len)` Reads characters into a portion of an array.
`boolean` | `ready()` Tells whether this stream is ready to be read.
`void` | `reset()` Resets the stream to the most recent mark.
`long` | `skip(long n)` Skips 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`

Constructor Detail

### NonshareableBufferedReader

    public NonshareableBufferedReader(java.io.Reader in,
                                      int sz)

  Creates a buffering character-input stream that uses an input buffer of the specified size.

  Parameters:
    `in` - A Reader
    `sz` - Input-buffer size
  Throws:
    `java.lang.IllegalArgumentException` - If sz is <= 0

Method Detail

### read

    public int read()
             throws java.io.IOException

  Reads a single character.

  Overrides:
    `read` in class `java.io.Reader`
  Returns:
    The character read, as an integer in the range 0 to 65535 (`0x00-0xffff`), 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

  Reads characters into a portion of an array.

  This method implements the general contract of the corresponding ``read`` method of the ``Reader`` class. As an additional convenience, it attempts to read as many characters as possible by repeatedly invoking the `read` method of the underlying stream. This iterated `read` continues until one of the following conditions becomes true:

  - The specified number of characters have been read,
  - The `read` method of the underlying stream returns `-1`, indicating end-of-file, or
  - The `ready` method of the underlying stream returns `false`, indicating that further input requests would block.
  If the first `read` on the underlying stream returns `-1` to indicate end-of-file then this method returns `-1`. Otherwise this method returns the number of characters actually read.

  Subclasses of this class are encouraged, but not required, to attempt to read as many characters as possible in the same fashion.

  Ordinarily this method takes characters from this stream's character buffer, filling it from the underlying stream as necessary. If, however, the buffer is empty, the mark is not valid, and the requested length is at least as large as the buffer, then this method will read characters directly from the underlying stream into the given array. Thus redundant `BufferedReader`s will not copy data unnecessarily.

  Specified by:
    `read` in class `java.io.Reader`
  Parameters:
    `cbuf` - Destination buffer
    `off` - Offset at which to start storing 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 n)
              throws java.io.IOException

  Skips characters.

  Overrides:
    `skip` in class `java.io.Reader`
  Parameters:
    `n` - The number of characters to skip
  Returns:
    The number of characters actually skipped
  Throws:
    `java.lang.IllegalArgumentException` - If `n` is negative.
    `java.io.IOException` - If an I/O error occurs

### ready

    public boolean ready()
                  throws java.io.IOException

  Tells whether this stream is ready to be read. A buffered character stream is ready if the buffer is not empty, or if the underlying character stream is ready.

  Overrides:
    `ready` in class `java.io.Reader`
  Throws:
    `java.io.IOException` - If an I/O error occurs

### markSupported

    public boolean markSupported()

  Tells 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

  Marks the present position in the stream. Subsequent calls to reset() will attempt to 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. An attempt to reset the stream after reading characters up to this limit or beyond may fail. A limit value larger than the size of the input buffer will cause a new buffer to be allocated whose size is no smaller than limit. Therefore large values should be used with care.
  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

  Resets the stream to the most recent mark.

  Overrides:
    `reset` in class `java.io.Reader`
  Throws:
    `java.io.IOException` - If the stream has never been marked, or if the mark has been invalidated

### close

    public void close()
               throws java.io.IOException

  Close the Reader.

  Specified by:
    `close` in interface `java.io.Closeable`
  Specified by:
    `close` in class `java.io.Reader`
  Throws:
    `java.io.IOException` - if the wrapped Reader cannot be closed

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