OpenJDK 27 · jdk.internal.org.jline.utils.InputStreamReader

Modifier and Type	Field and Description
private static final int	BUFFER_SIZE
pack-priv ByteBuffer	bytes
pack-priv CharsetDecoder	decoder
private boolean	endOfInput
private InputStream	in
pack-priv char	pending

Constructor Summary

Access	Constructor and Description
public	InputStreamReader(InputStream the input stream from which to read characters. in) Constructs a new `InputStreamReader` on the `InputStream` `in`.
public	InputStreamReader(InputStream the InputStream from which to read characters. in, final String identifies the character converter to use. enc) Constructs a new InputStreamReader on the InputStream `in`.
public	InputStreamReader(InputStream the source InputStream from which to read characters. in, CharsetDecoder the CharsetDecoder used by the character conversion. dec) Constructs a new InputStreamReader on the InputStream `in` and CharsetDecoder `dec`.
public	InputStreamReader(InputStream the source InputStream from which to read characters. in, Charset the Charset that defines the character converter charset) Constructs a new InputStreamReader on the InputStream `in` and Charset `charset`.

Method Summary

Modifier and Type	Method and Description
public void	close() Implements abstract java.io.Reader.close. Implements java.io.Closeable.close. Closes this reader.
public String	Returns: the name of the character converter or `null` if this reader is closed. getEncoding() Returns the name of the encoding used to convert bytes into characters.
private boolean	isOpen()
public int	Returns: the character read or -1 if the end of the reader has been reached. read() Overrides java.io.Reader.read. Reads a single character from this reader and returns it as an integer with the two higher-order bytes set to 0.
public int	Returns: the number of characters read or -1 if the end of the reader has been reached. read(char[] the array to store the characters read. buf, int the initial position in `buf` to store the characters read from this reader. offset, int the maximum number of characters to read. length) Implements abstract java.io.Reader.read. Reads at most `length` characters from this reader and stores them at position `offset` in the character array `buf`.
public boolean	Returns: `true` if the receiver will not block when `read()` is called, `false` if unknown or blocking will occur. ready() Overrides java.io.Reader.ready. Indicates whether this reader is ready to be read without blocking.

Inherited from java.io.Reader:: mark markSupported nullReader of read read readAllAsString readAllLines reset skip transferTo

Field Detail

BUFFER_SIZE	back to summary
private static final int BUFFER_SIZE

bytes	back to summary
pack-priv ByteBuffer bytes

decoder	back to summary
pack-priv CharsetDecoder decoder

endOfInput	back to summary
private boolean endOfInput

in	back to summary
private InputStream in

pending	back to summary
pack-priv char pending

Constructor Detail

InputStreamReader back to summary

InputStreamReader	back to summary
public InputStreamReader(InputStream in) Constructs a new `InputStreamReader` on the `InputStream` `in`. This constructor sets the character converter to the encoding specified in the "file.encoding" property and falls back to ISO 8859_1 (ISO-Latin-1) if the property doesn't exist. Parameters in:InputStream the input stream from which to read characters.

public InputStreamReader(InputStream in)

Constructs a new InputStreamReader on the InputStream in. This constructor sets the character converter to the encoding specified in the "file.encoding" property and falls back to ISO 8859_1 (ISO-Latin-1) if the property doesn't exist.

Parameters

in:InputStream: the input stream from which to read characters.

InputStreamReader back to summary

InputStreamReader	back to summary
public InputStreamReader(InputStream in, final String enc) throws UnsupportedEncodingException Constructs a new InputStreamReader on the InputStream `in`. The character converter that is used to decode bytes into characters is identified by name by `enc`. If the encoding cannot be found, an UnsupportedEncodingException error is thrown. Parameters in:InputStream the InputStream from which to read characters. enc:String identifies the character converter to use. Exceptions UnsupportedEncodingException: if the encoding specified by `enc` cannot be found. NullPointerException: if `enc` is `null`.

public InputStreamReader(InputStream in, final String enc) throws UnsupportedEncodingException

Constructs a new InputStreamReader on the InputStream in. The character converter that is used to decode bytes into characters is identified by name by enc. If the encoding cannot be found, an UnsupportedEncodingException error is thrown.

Parameters

in:InputStream: the InputStream from which to read characters.
enc:String: identifies the character converter to use.

Exceptions

UnsupportedEncodingException:: if the encoding specified by enc cannot be found.
NullPointerException:: if enc is null.

InputStreamReader back to summary

InputStreamReader	back to summary
public InputStreamReader(InputStream in, CharsetDecoder dec) Constructs a new InputStreamReader on the InputStream `in` and CharsetDecoder `dec`. Parameters in:InputStream the source InputStream from which to read characters. dec:CharsetDecoder the CharsetDecoder used by the character conversion.

public InputStreamReader(InputStream in, CharsetDecoder dec)

Constructs a new InputStreamReader on the InputStream in and CharsetDecoder dec.

Parameters

in:InputStream: the source InputStream from which to read characters.
dec:CharsetDecoder: the CharsetDecoder used by the character conversion.

InputStreamReader back to summary

InputStreamReader	back to summary
public InputStreamReader(InputStream in, Charset charset) Constructs a new InputStreamReader on the InputStream `in` and Charset `charset`. Parameters in:InputStream the source InputStream from which to read characters. charset:Charset the Charset that defines the character converter

public InputStreamReader(InputStream in, Charset charset)

Constructs a new InputStreamReader on the InputStream in and Charset charset.

Parameters

in:InputStream: the source InputStream from which to read characters.
charset:Charset: the Charset that defines the character converter

Method Detail

close	back to summary
public void close() throws IOException Implements abstract java.io.Reader.close. Implements java.io.Closeable.close. Closes this reader. This implementation closes the source InputStream and releases all local storage. Annotations @Override Exceptions IOException: if an error occurs attempting to close this reader.

back to summary

public void close() throws IOException

Implements abstract java.io.Reader.close.

Implements java.io.Closeable.close.

Closes this reader. This implementation closes the source InputStream and releases all local storage.

Annotations

@Override

Exceptions

IOException:: if an error occurs attempting to close this reader.

getEncoding back to summary

getEncoding	back to summary
public String getEncoding() Returns the name of the encoding used to convert bytes into characters. The value `null` is returned if this reader has been closed. Returns:String the name of the character converter or `null` if this reader is closed.

public String getEncoding()

Returns the name of the encoding used to convert bytes into characters. The value null is returned if this reader has been closed.

Returns:String: the name of the character converter or null if this reader is closed.

isOpen	back to summary
private boolean isOpen()

read	back to summary
public int read() throws IOException Overrides java.io.Reader.read. Reads a single character from this reader and returns it as an integer with the two higher-order bytes set to 0. Returns -1 if the end of the reader has been reached. The byte value is either obtained from converting bytes in this reader's buffer or by first filling the buffer from the source InputStream and then reading from the buffer. Returns:int the character read or -1 if the end of the reader has been reached. Annotations @Override Exceptions IOException: if this reader is closed or some other I/O error occurs.

read

back to summary

public int read() throws IOException

Overrides java.io.Reader.read.

Reads a single character from this reader and returns it as an integer with the two higher-order bytes set to 0. Returns -1 if the end of the reader has been reached. The byte value is either obtained from converting bytes in this reader's buffer or by first filling the buffer from the source InputStream and then reading from the buffer.

Returns:int

the character read or -1 if the end of the reader has been reached.

Annotations

@Override

Exceptions

IOException:: if this reader is closed or some other I/O error occurs.

read back to summary

read	back to summary
public int read(char[] buf, int offset, int length) throws IOException Implements abstract java.io.Reader.read. Reads at most `length` characters from this reader and stores them at position `offset` in the character array `buf`. Returns the number of characters actually read or -1 if the end of the reader has been reached. The bytes are either obtained from converting bytes in this reader's buffer or by first filling the buffer from the source InputStream and then reading from the buffer. Parameters buf:char[] the array to store the characters read. offset:int the initial position in `buf` to store the characters read from this reader. length:int the maximum number of characters to read. Returns:int the number of characters read or -1 if the end of the reader has been reached. Annotations @Override Exceptions IOException: if this reader is closed or some other I/O error occurs. IndexOutOfBoundsException: if `offset < 0` or `length < 0`, or if `offset + length` is greater than the length of `buf`.

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

Implements abstract java.io.Reader.read.

Reads at most length characters from this reader and stores them at position offset in the character array buf. Returns the number of characters actually read or -1 if the end of the reader has been reached. The bytes are either obtained from converting bytes in this reader's buffer or by first filling the buffer from the source InputStream and then reading from the buffer.

Parameters

buf:char[]: the array to store the characters read.
offset:int: the initial position in buf to store the characters read from this reader.
length:int: the maximum number of characters to read.

Returns:int

the number of characters read or -1 if the end of the reader has been reached.

Annotations

@Override

Exceptions

IOException:: if this reader is closed or some other I/O error occurs.
IndexOutOfBoundsException:: if offset < 0 or length < 0, or if offset + length is greater than the length of buf.

ready back to summary

ready	back to summary
public boolean ready() throws IOException Overrides java.io.Reader.ready. Indicates whether this reader is ready to be read without blocking. If the result is `true`, the next `read()` will not block. If the result is `false` then this reader may or may not block when `read()` is called. This implementation returns `true` if there are bytes available in the buffer or the source stream has bytes available. Returns:boolean `true` if the receiver will not block when `read()` is called, `false` if unknown or blocking will occur. Annotations @Override Exceptions IOException: if this reader is closed or some other I/O error occurs.

public boolean ready() throws IOException

Overrides java.io.Reader.ready.

Indicates whether this reader is ready to be read without blocking. If the result is true, the next read() will not block. If the result is false then this reader may or may not block when read() is called. This implementation returns true if there are bytes available in the buffer or the source stream has bytes available.

Returns:boolean

true if the receiver will not block when read() is called, false if unknown or blocking will occur.

Annotations

@Override

Exceptions

IOException:: if this reader is closed or some other I/O error occurs.

public Class InputStreamReader

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail