weblogic.apache.xerces.impl.io
Class UCSReader

java.lang.Object
  java.io.Reader
      weblogic.apache.xerces.impl.io.UCSReader

All Implemented Interfaces:

Closeable, Readable

Deprecated. please use JDK supplied XML parsers and transformers

public class UCSReader
extends Reader

Reader for UCS-2 and UCS-4 encodings. (i.e., encodings from ISO-10646-UCS-(2|4)).

Field Summary

static int	DEFAULT_BUFFER_SIZE Deprecated. Default byte buffer size (8192, larger than that of ASCIIReader since it's reasonable to surmise that the average UCS-4-encoded file should be 4 times as large as the average ASCII-encoded file).
protected byte[]	fBuffer Deprecated. Byte buffer.
protected short	fEncoding Deprecated.
protected InputStream	fInputStream Deprecated. Input stream.
static short	UCS2BE Deprecated.
static short	UCS2LE Deprecated.
static short	UCS4BE Deprecated.
static short	UCS4LE Deprecated.

Fields inherited from class java.io.Reader

lock

Constructor Summary

UCSReader(InputStream inputStream, int size, short encoding)
Deprecated. Constructs an ASCII reader from the specified input stream and buffer size.

UCSReader(InputStream inputStream, short encoding)
Deprecated. Constructs an ASCII reader from the specified input stream using the default buffer size.

Method Summary

void	close() Deprecated. Close the stream.
void	mark(int readAheadLimit) Deprecated. Mark the present position in the stream.
boolean	markSupported() Deprecated. Tell whether this stream supports the mark() operation.
int	read() Deprecated. Read a single character.
int	read(char[] ch, int offset, int length) Deprecated. Read characters into a portion of an array.
boolean	ready() Deprecated. Tell whether this stream is ready to be read.
void	reset() Deprecated. Reset the stream.
long	skip(long n) Deprecated. 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

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

Deprecated.

Default byte buffer size (8192, larger than that of ASCIIReader since it's reasonable to surmise that the average UCS-4-encoded file should be 4 times as large as the average ASCII-encoded file).

See Also:

Constant Field Values

UCS2LE

public static final short UCS2LE

Deprecated.

See Also:

Constant Field Values

UCS2BE

public static final short UCS2BE

Deprecated.

See Also:

Constant Field Values

UCS4LE

public static final short UCS4LE

Deprecated.

See Also:

Constant Field Values

UCS4BE

public static final short UCS4BE

Deprecated.

See Also:

Constant Field Values

fInputStream

protected InputStream fInputStream

Deprecated.

Input stream.

fBuffer

protected byte[] fBuffer

Deprecated.

Byte buffer.

fEncoding

protected short fEncoding

Deprecated.

Constructor Detail

UCSReader

public UCSReader(InputStream inputStream,
                 short encoding)

Deprecated.

Constructs an ASCII reader from the specified input stream using the default buffer size. The Endian-ness and whether this is UCS-2 or UCS-4 needs also to be known in advance.

Parameters:

inputStream - The input stream.

encoding - One of UCS2LE, UCS2BE, UCS4LE or UCS4BE.

UCSReader

public UCSReader(InputStream inputStream,
                 int size,
                 short encoding)

Deprecated.

Constructs an ASCII reader from the specified input stream and buffer size. The Endian-ness and whether this is UCS-2 or UCS-4 needs also to be known in advance.

Parameters:

inputStream - The input stream.

size - The initial buffer size.

encoding - One of UCS2LE, UCS2BE, UCS4LE or UCS4BE.

Method Detail

read

public int read()
         throws IOException

Deprecated.

Read a single character. This method will block until a character is available, an I/O error occurs, or the end of the stream is reached.

Subclasses that intend to support efficient single-character input should override this method.

Overrides:

read in class Reader

Returns:

The character read, as an integer in the range 0 to 127 (0x00-0x7f), or -1 if the end of the stream has been reached

Throws:

IOException - If an I/O error occurs

read

public int read(char[] ch,
                int offset,
                int length)
         throws IOException

Deprecated.

Read characters into a portion of an array. This method will block until some input is available, an I/O error occurs, or the end of the stream is reached.

Specified by:

read in class Reader

Parameters:

ch - Destination buffer

offset - Offset at which to start storing characters

length - Maximum number of characters to read

Returns:

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

Throws:

IOException - If an I/O error occurs

skip

public long skip(long n)
          throws IOException

Deprecated.

Skip characters. This method will block until some characters are available, an I/O error occurs, or the end of the stream is reached.

Overrides:

skip in class Reader

Parameters:

n - The number of characters to skip

Returns:

The number of characters actually skipped

Throws:

IOException - If an I/O error occurs

ready

public boolean ready()
              throws IOException

Deprecated.

Tell whether this stream is ready to be read.

Overrides:

ready in class Reader

Returns:

True if the next read() is guaranteed not to block for input, false otherwise. Note that returning false does not guarantee that the next read will block.

Throws:

IOException - If an I/O error occurs

markSupported

public boolean markSupported()

Deprecated.

Tell whether this stream supports the mark() operation.

Overrides:

markSupported in class Reader

mark

public void mark(int readAheadLimit)
          throws IOException

Deprecated.

Mark the present position in the stream. Subsequent calls to reset() will attempt to reposition the stream to this point. Not all character-input streams support the mark() operation.

Overrides:

mark in class Reader

Parameters:

readAheadLimit - Limit on the number of characters that may be read while still preserving the mark. After reading this many characters, attempting to reset the stream may fail.

Throws:

IOException - If the stream does not support mark(), or if some other I/O error occurs

reset

public void reset()
           throws IOException

Deprecated.

Reset the stream. If the stream has been marked, then attempt to reposition it at the mark. If the stream has not been marked, then attempt to reset it in some way appropriate to the particular stream, for example by repositioning it to its starting point. Not all character-input streams support the reset() operation, and some support reset() without supporting mark().

Overrides:

reset in class Reader

Throws:

IOException - If the stream has not been marked, or if the mark has been invalidated, or if the stream does not support reset(), or if some other I/O error occurs

close

public void close()
           throws IOException

Deprecated.

Close the stream. Once a stream has been closed, further read(), ready(), mark(), or reset() invocations will throw an IOException. Closing a previously-closed stream, however, has no effect.

Specified by:

close in interface Closeable

Specified by:

close in class Reader

Throws:

IOException - If an I/O error occurs