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java.lang.Object | +--java.io.Reader | +--weblogic.apache.xerces.impl.io.UCSReader
Reader for UCS-2 and UCS-4 encodings. (i.e., encodings from ISO-10646-UCS-(2|4)).
Field Summary | |
static int |
DEFAULT_BUFFER_SIZE
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
Byte buffer. |
protected short |
fEncoding
|
protected java.io.InputStream |
fInputStream
Input stream. |
static short |
UCS2BE
|
static short |
UCS2LE
|
static short |
UCS4BE
|
static short |
UCS4LE
|
Fields inherited from class java.io.Reader |
lock |
Constructor Summary | |
UCSReader(java.io.InputStream inputStream,
int size,
short encoding)
Constructs an ASCII reader from the specified input stream and buffer size. |
|
UCSReader(java.io.InputStream inputStream,
short encoding)
Constructs an ASCII reader from the specified input stream using the default buffer size. |
Method Summary | |
void |
close()
Close the stream. |
void |
mark(int readAheadLimit)
Mark the present position in the stream. |
boolean |
markSupported()
Tell whether this stream supports the mark() operation. |
int |
read()
Read a single character. |
int |
read(char[] ch,
int offset,
int length)
Read characters into a portion of an array. |
boolean |
ready()
Tell whether this stream is ready to be read. |
void |
reset()
Reset the stream. |
long |
skip(long n)
Skip characters. |
Methods inherited from class java.io.Reader |
read |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
Field Detail |
public static final int DEFAULT_BUFFER_SIZE
public static final short UCS2LE
public static final short UCS2BE
public static final short UCS4LE
public static final short UCS4BE
protected java.io.InputStream fInputStream
protected byte[] fBuffer
protected short fEncoding
Constructor Detail |
public UCSReader(java.io.InputStream inputStream, short encoding)
inputStream
- The input stream.encoding
- One of UCS2LE, UCS2BE, UCS4LE or UCS4BE.public UCSReader(java.io.InputStream inputStream, int size, short encoding)
inputStream
- The input stream.size
- The initial buffer size.encoding
- One of UCS2LE, UCS2BE, UCS4LE or UCS4BE.Method Detail |
public int read() throws java.io.IOException
Subclasses that intend to support efficient single-character input should override this method.
public int read(char[] ch, int offset, int length) throws java.io.IOException
ch
- Destination bufferoffset
- Offset at which to start storing characterslength
- Maximum number of characters to readpublic long skip(long n) throws java.io.IOException
n
- The number of characters to skippublic boolean ready() throws java.io.IOException
public boolean markSupported()
public void mark(int readAheadLimit) throws java.io.IOException
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.public void reset() throws java.io.IOException
public void close() throws java.io.IOException
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Documentation is available at http://download.oracle.com/docs/cd/E13222_01/wls/docs81 |
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