Package org.apache.jasper.xmlparser
Class UCSReader
- java.lang.Object
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- java.io.Reader
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- org.apache.jasper.xmlparser.UCSReader
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- All Implemented Interfaces:
java.io.Closeable
,java.lang.AutoCloseable
,java.lang.Readable
@Deprecated public class UCSReader extends java.io.Reader
Deprecated.Will be removed in Tomcat 9.0.x onwardsReader for UCS-2 and UCS-4 encodings. (i.e., encodings from ISO-10646-UCS-(2|4)).- Author:
- Neil Graham, IBM
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Constructor Summary
Constructors Constructor Description UCSReader(java.io.InputStream inputStream, int size, short encoding)
Deprecated.Constructs an ASCII reader from the specified input stream and buffer size.UCSReader(java.io.InputStream inputStream, short encoding)
Deprecated.Constructs an ASCII reader from the specified input stream using the default buffer size.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description 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.
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Field Detail
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UCS2LE
public static final short UCS2LE
Deprecated.- See Also:
- Constant Field Values
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UCS2BE
public static final short UCS2BE
Deprecated.- See Also:
- Constant Field Values
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UCS4LE
public static final short UCS4LE
Deprecated.- See Also:
- Constant Field Values
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UCS4BE
public static final short UCS4BE
Deprecated.- See Also:
- Constant Field Values
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Constructor Detail
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UCSReader
public UCSReader(java.io.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.
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UCSReader
public UCSReader(java.io.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.
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Method Detail
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read
public int read() throws java.io.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 classjava.io.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:
java.io.IOException
- If an I/O error occurs
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read
public int read(char[] ch, int offset, int length) throws java.io.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 classjava.io.Reader
- Parameters:
ch
- Destination bufferoffset
- Offset at which to start storing characterslength
- 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
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skip
public long skip(long n) throws java.io.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 classjava.io.Reader
- Parameters:
n
- The number of characters to skip- Returns:
- The number of characters actually skipped
- Throws:
java.io.IOException
- If an I/O error occurs
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ready
public boolean ready() throws java.io.IOException
Deprecated.Tell whether this stream is ready to be read.- Overrides:
ready
in classjava.io.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:
java.io.IOException
- If an I/O error occurs
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markSupported
public boolean markSupported()
Deprecated.Tell whether this stream supports the mark() operation.- Overrides:
markSupported
in classjava.io.Reader
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mark
public void mark(int readAheadLimit) throws java.io.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 classjava.io.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:
java.io.IOException
- If the stream does not support mark(), or if some other I/O error occurs
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reset
public void reset() throws java.io.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 classjava.io.Reader
- Throws:
java.io.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
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close
public void close() throws java.io.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 interfacejava.lang.AutoCloseable
- Specified by:
close
in interfacejava.io.Closeable
- Specified by:
close
in classjava.io.Reader
- Throws:
java.io.IOException
- If an I/O error occurs
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