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:
Closeable,AutoCloseable,Readable
@Deprecated public class UCSReader extends 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(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.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voidclose()Deprecated.Close the stream.voidmark(int readAheadLimit)Deprecated.Mark the present position in the stream.booleanmarkSupported()Deprecated.Tell whether this stream supports the mark() operation.intread()Deprecated.Read a single character.intread(char[] ch, int offset, int length)Deprecated.Read characters into a portion of an array.booleanready()Deprecated.Tell whether this stream is ready to be read.voidreset()Deprecated.Reset the stream.longskip(long n)Deprecated.Skip characters.-
Methods inherited from class java.io.Reader
nullReader, read, read, transferTo
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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(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(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 IOExceptionDeprecated.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:
readin classReader- 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
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read
public int read(char[] ch, int offset, int length) throws IOExceptionDeprecated.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:
readin classReader- 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:
IOException- If an I/O error occurs
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skip
public long skip(long n) throws IOExceptionDeprecated.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:
skipin classReader- Parameters:
n- The number of characters to skip- Returns:
- The number of characters actually skipped
- Throws:
IOException- If an I/O error occurs
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ready
public boolean ready() throws IOExceptionDeprecated.Tell whether this stream is ready to be read.- Overrides:
readyin classReader- 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
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markSupported
public boolean markSupported()
Deprecated.Tell whether this stream supports the mark() operation.- Overrides:
markSupportedin classReader
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mark
public void mark(int readAheadLimit) throws IOExceptionDeprecated.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:
markin classReader- 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
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reset
public void reset() throws IOExceptionDeprecated.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:
resetin classReader- 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
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close
public void close() throws IOExceptionDeprecated.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:
closein interfaceAutoCloseable- Specified by:
closein interfaceCloseable- Specified by:
closein classReader- Throws:
IOException- If an I/O error occurs
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