org.htmlparser.lexer

类 Stream

java.lang.Object

java.io.InputStream

org.htmlparser.lexer.Stream

所有已实现的接口:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Runnable

public class Stream
extends java.io.InputStream
implements java.lang.Runnable

Provides for asynchronous fetching from a stream.

字段概要

字段

限定符和类型	字段和说明
int	fills The number of calls to fill.
byte[]	mBuffer The bytes read so far.
int	mLevel The number of valid bytes in the buffer.
int	reallocations The number of reallocations.
int	synchronous The number of synchronous (blocking) fills.

构造器概要

构造器

构造器和说明
Stream(java.io.InputStream in) Construct a stream with no assumptions about the number of bytes available.
Stream(java.io.InputStream in, int bytes) Construct a stream to read the given number of bytes.

方法概要

限定符和类型	方法和说明
int	available() Returns the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream.
void	close() Closes this input stream and releases any system resources associated with the stream.
void	mark(int readlimit) Marks the current position in this input stream.
boolean	markSupported() Tests if this input stream supports the mark and reset methods.
int	read() Reads the next byte of data from the input stream.
void	reset() Repositions this stream to the position at the time the mark method was last called on this input stream.
void	run() Continually read the underlying stream untill exhausted.

从类继承的方法 java.io.InputStream

read, read, skip

从类继承的方法 java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

fills

public int fills

The number of calls to fill. Note: to be removed.

reallocations

public int reallocations

The number of reallocations. Note: to be removed.

synchronous

public int synchronous

The number of synchronous (blocking) fills. Note: to be removed.

mBuffer

public volatile byte[] mBuffer

The bytes read so far.

mLevel

public volatile int mLevel

The number of valid bytes in the buffer.

构造器详细资料

Stream

public Stream(java.io.InputStream in)

Construct a stream with no assumptions about the number of bytes available.

参数:

in - The input stream to use.

Stream

public Stream(java.io.InputStream in,
              int bytes)

Construct a stream to read the given number of bytes.

参数:

in - The input stream to use.

bytes - The maximum number of bytes to read. This should be set to the ContentLength from the HTTP header. A negative or zero value indicates an unknown number of bytes.

方法详细资料

run

public void run()

Continually read the underlying stream untill exhausted.

指定者:

run 在接口中 java.lang.Runnable

另请参阅:

Thread.run()

read

public int read()
         throws java.io.IOException

Reads the next byte of data from the input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.

指定者:

read 在类中 java.io.InputStream

返回:

The next byte of data, or -1 if the end of the stream is reached.

抛出:

java.io.IOException - If an I/O error occurs.

available

public int available()
              throws java.io.IOException

Returns the number of bytes that can be read (or skipped over) from this input stream without blocking by the next caller of a method for this input stream. The next caller might be the same thread or or another thread.

覆盖:

available 在类中 java.io.InputStream

返回:

The number of bytes that can be read from this input stream without blocking.

抛出:

java.io.IOException - If an I/O error occurs.

close

public void close()
           throws java.io.IOException

Closes this input stream and releases any system resources associated with the stream.

指定者:

close 在接口中 java.io.Closeable

指定者:

close 在接口中 java.lang.AutoCloseable

覆盖:

close 在类中 java.io.InputStream

抛出:

java.io.IOException - If an I/O error occurs.

reset

public void reset()
           throws java.io.IOException

Repositions this stream to the position at the time the mark method was last called on this input stream. The general contract of reset is:

• If the method markSupported returns true, then:
  • If the method mark has not been called since the stream was created, or the number of bytes read from the stream since mark was last called is larger than the argument to mark at that last call, then an IOException might be thrown.
  • If such an IOException is not thrown, then the stream is reset to a state such that all the bytes read since the most recent call to mark (or since the start of the file, if mark has not been called) will be resupplied to subsequent callers of the read method, followed by any bytes that otherwise would have been the next input data as of the time of the call to reset.
• If the method markSupported returns false, then:
  • The call to reset may throw an IOException.
  • If an IOException is not thrown, then the stream is reset to a fixed state that depends on the particular type of the input stream and how it was created. The bytes that will be supplied to subsequent callers of the read method depend on the particular type of the input stream.

覆盖:

reset 在类中 java.io.InputStream

抛出:

java.io.IOException - Never thrown. Just for subclassers.

另请参阅:

InputStream.mark(int), IOException

markSupported

public boolean markSupported()

Tests if this input stream supports the mark and reset methods. Whether or not mark and reset are supported is an invariant property of a particular input stream instance. The markSupported method of InputStream returns false.

覆盖:

markSupported 在类中 java.io.InputStream

返回:

true.

另请参阅:

InputStream.mark(int), InputStream.reset()

mark

public void mark(int readlimit)

Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.

The readlimit arguments tells this input stream to allow that many bytes to be read before the mark position gets invalidated.

The general contract of mark is that, if the method markSupported returns true, the stream somehow remembers all the bytes read after the call to mark and stands ready to supply those same bytes again if and whenever the method reset is called. However, the stream is not required to remember any data at all if more than readlimit bytes are read from the stream before reset is called.

覆盖:

mark 在类中 java.io.InputStream

参数:

readlimit - Not used.

另请参阅:

InputStream.reset()