OpenJDK 27 · com.sun.org.apache.xerces.internal.impl.io.UTF8Reader

Modifier and Type	Field and Description
private static final boolean	DEBUG_READ Debug read.
public static final int	DEFAULT_BUFFER_SIZE Default byte buffer size (2048).
protected byte[]	fBuffer Byte buffer.
private MessageFormatter	fFormatter
protected InputStream	fInputStream Input stream.
private Locale	fLocale
protected int	fOffset Offset into buffer.
private int	fSurrogate Surrogate character.

Access	Constructor and Description
public	UTF8Reader(InputStream The input stream. inputStream) Constructs a UTF-8 reader from the specified input stream using the default buffer size.
public	UTF8Reader(InputStream The input stream. inputStream, MessageFormatter given MessageFormatter messageFormatter, Locale Locale to use for messages locale) Constructs a UTF-8 reader from the specified input stream using the default buffer size and the given MessageFormatter.
public	UTF8Reader(InputStream The input stream. inputStream, int The initial buffer size. size, MessageFormatter the formatter for localizing/formatting errors. messageFormatter, Locale the Locale to use for messages locale) Constructs a UTF-8 reader from the specified input stream, buffer size and MessageFormatter.

Method Summary

Modifier and Type	Method and Description
public void	close() Implements abstract java.io.Reader.close. Implements java.io.Closeable.close. Close the stream.
private void	expectedByte(int position, int count) Throws an exception for expected byte.
private void	invalidByte(int position, int count, int c) Throws an exception for invalid byte.
private void	invalidSurrogate(int uuuuu) Throws an exception for invalid surrogate bits.
public void	mark(int 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. readAheadLimit) Overrides java.io.Reader.mark. Mark the present position in the stream.
public boolean	markSupported() Overrides java.io.Reader.markSupported. Tell whether this stream supports the mark() operation.
public int	Returns: The character read, as an integer in the range 0 to 16383 (`0x00-0xffff`), or -1 if the end of the stream has been reached read() Overrides java.io.Reader.read. Read a single character.
public int	Returns: The number of characters read, or -1 if the end of the stream has been reached read(char[] Destination buffer ch, int Offset at which to start storing characters offset, int Maximum number of characters to read length) Implements abstract java.io.Reader.read. Read characters into a portion of an array.
public boolean	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. ready() Overrides java.io.Reader.ready. Tell whether this stream is ready to be read.
public void	reset() Overrides java.io.Reader.reset. Reset the stream.
public long	Returns: The number of characters actually skipped skip(long The number of characters to skip n) Overrides java.io.Reader.skip. Skip characters.

Inherited from java.io.Reader:: nullReader of read read readAllAsString readAllLines transferTo

Field Detail

DEBUG_READ	back to summary
private static final boolean DEBUG_READ Debug read.

DEFAULT_BUFFER_SIZE	back to summary
public static final int DEFAULT_BUFFER_SIZE Default byte buffer size (2048).

fBuffer	back to summary
protected byte[] fBuffer Byte buffer.

fFormatter	back to summary
private MessageFormatter fFormatter

fInputStream	back to summary
protected InputStream fInputStream Input stream.

fLocale	back to summary
private Locale fLocale

fOffset	back to summary
protected int fOffset Offset into buffer.

fSurrogate	back to summary
private int fSurrogate Surrogate character.

Constructor Detail

UTF8Reader	back to summary
public UTF8Reader(InputStream inputStream) Constructs a UTF-8 reader from the specified input stream using the default buffer size. Primarily for testing. Parameters inputStream:InputStream The input stream.

UTF8Reader

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public UTF8Reader(InputStream inputStream)

Constructs a UTF-8 reader from the specified input stream using the default buffer size. Primarily for testing.

Parameters

inputStream:InputStream: The input stream.

UTF8Reader	back to summary
public UTF8Reader(InputStream inputStream, MessageFormatter messageFormatter, Locale locale) Constructs a UTF-8 reader from the specified input stream using the default buffer size and the given MessageFormatter. Parameters inputStream:InputStream The input stream. messageFormatter:MessageFormatter given MessageFormatter locale:Locale Locale to use for messages

UTF8Reader

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public UTF8Reader(InputStream inputStream, MessageFormatter messageFormatter, Locale locale)

Constructs a UTF-8 reader from the specified input stream using the default buffer size and the given MessageFormatter.

Parameters

inputStream:InputStream: The input stream.
messageFormatter:MessageFormatter: given MessageFormatter
locale:Locale: Locale to use for messages

UTF8Reader	back to summary
public UTF8Reader(InputStream inputStream, int size, MessageFormatter messageFormatter, Locale locale) Constructs a UTF-8 reader from the specified input stream, buffer size and MessageFormatter. Parameters inputStream:InputStream The input stream. size:int The initial buffer size. messageFormatter:MessageFormatter the formatter for localizing/formatting errors. locale:Locale the Locale to use for messages

UTF8Reader

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public UTF8Reader(InputStream inputStream, int size, MessageFormatter messageFormatter, Locale locale)

Constructs a UTF-8 reader from the specified input stream, buffer size and MessageFormatter.

Parameters

inputStream:InputStream: The input stream.
size:int: The initial buffer size.
messageFormatter:MessageFormatter: the formatter for localizing/formatting errors.
locale:Locale: the Locale to use for messages

Method Detail

close	back to summary
public void close() throws IOException Implements abstract java.io.Reader.close. Implements java.io.Closeable.close. 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. Exceptions IOException: If an I/O error occurs

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public void close() throws IOException

Implements abstract java.io.Reader.close.

Implements java.io.Closeable.close.

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.

Exceptions

IOException:: If an I/O error occurs

expectedByte	back to summary
private void expectedByte(int position, int count) throws MalformedByteSequenceException Throws an exception for expected byte.

invalidByte	back to summary
private void invalidByte(int position, int count, int c) throws MalformedByteSequenceException Throws an exception for invalid byte.

invalidSurrogate	back to summary
private void invalidSurrogate(int uuuuu) throws MalformedByteSequenceException Throws an exception for invalid surrogate bits.

mark	back to summary
public void mark(int readAheadLimit) throws IOException Overrides java.io.Reader.mark. 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. Parameters readAheadLimit:int 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. Exceptions IOException: If the stream does not support mark(), or if some other I/O error occurs

mark

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public void mark(int readAheadLimit) throws IOException

Overrides java.io.Reader.mark.

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.

Parameters

readAheadLimit:int: 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.

Exceptions

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

markSupported	back to summary
public boolean markSupported() Overrides java.io.Reader.markSupported. Tell whether this stream supports the mark() operation.

markSupported

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public boolean markSupported()

Overrides java.io.Reader.markSupported.

Tell whether this stream supports the mark() operation.

read back to summary

read	back to summary
public int read() throws IOException Overrides java.io.Reader.read. 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. Returns:int The character read, as an integer in the range 0 to 16383 (`0x00-0xffff`), or -1 if the end of the stream has been reached Exceptions IOException: If an I/O error occurs

public int read() throws IOException

Overrides java.io.Reader.read.

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.

Returns:int

The character read, as an integer in the range 0 to 16383 (0x00-0xffff), or -1 if the end of the stream has been reached

Exceptions

IOException:: If an I/O error occurs

read	back to summary
public int read(char[] ch, int offset, int length) throws IOException Implements abstract java.io.Reader.read. 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. Parameters ch:char[] Destination buffer offset:int Offset at which to start storing characters length:int Maximum number of characters to read Returns:int The number of characters read, or -1 if the end of the stream has been reached Exceptions IOException: If an I/O error occurs

read

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

Implements abstract java.io.Reader.read.

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.

Parameters

ch:char[]: Destination buffer
offset:int: Offset at which to start storing characters
length:int: Maximum number of characters to read

Returns:int

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

Exceptions

IOException:: If an I/O error occurs

ready	back to summary
public boolean ready() throws IOException Overrides java.io.Reader.ready. Tell whether this stream is ready to be read. Returns:boolean 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. Exceptions IOException: If an I/O error occurs

ready

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public boolean ready() throws IOException

Overrides java.io.Reader.ready.

Tell whether this stream is ready to be read.

Returns:boolean

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.

Exceptions

IOException:: If an I/O error occurs

reset	back to summary
public void reset() throws IOException Overrides java.io.Reader.reset. 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(). Exceptions 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

reset

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public void reset() throws IOException

Overrides java.io.Reader.reset.

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().

Exceptions

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

skip	back to summary
public long skip(long n) throws IOException Overrides java.io.Reader.skip. Skip characters. This method will block until some characters are available, an I/O error occurs, or the end of the stream is reached. Parameters n:long The number of characters to skip Returns:long The number of characters actually skipped Exceptions IOException: If an I/O error occurs

skip

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public long skip(long n) throws IOException

Overrides java.io.Reader.skip.

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

Parameters

n:long: The number of characters to skip

Returns:long

The number of characters actually skipped

Exceptions

IOException:: If an I/O error occurs

public Class UTF8Reader

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