java.io.Closeable
, java.lang.AutoCloseable
, java.lang.Runnable
public class Stream
extends java.io.InputStream
implements java.lang.Runnable
Modifier and Type | Field | Description |
---|---|---|
protected static int |
BUFFER_SIZE |
An initial buffer size.
|
protected static int |
EOF |
Return value when no more characters are left.
|
int |
fills |
The number of calls to fill.
|
byte[] |
mBuffer |
The bytes read so far.
|
protected int |
mContentLength |
The content length from the HTTP header.
|
protected java.io.InputStream |
mIn |
The underlying stream.
|
int |
mLevel |
The number of valid bytes in the buffer.
|
protected int |
mMark |
The bookmark.
|
protected int |
mOffset |
The offset of the next byte returned by read().
|
int |
reallocations |
The number of reallocations.
|
int |
synchronous |
The number of synchronous (blocking) fills.
|
Constructor | Description |
---|---|
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.
|
Modifier and Type | Method | Description |
---|---|---|
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.
|
protected boolean |
fill(boolean force) |
Fetch more bytes from the underlying 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.
|
public int fills
public int reallocations
public int synchronous
protected static final int BUFFER_SIZE
protected static final int EOF
protected volatile java.io.InputStream mIn
public volatile byte[] mBuffer
public volatile int mLevel
protected int mOffset
protected int mContentLength
protected int mMark
public Stream(java.io.InputStream in)
in
- The input stream to use.public Stream(java.io.InputStream in, int bytes)
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.protected boolean fill(boolean force) throws java.io.IOException
force
- If true
, an attempt is made to read from the
underlying stream, even if bytes are available, If false
,
a read of the underlying stream will not occur if there are already
bytes available.true
if not at the end of the input stream.java.io.IOException
- If the underlying stream read() or available() throws one.public void run()
run
in interface java.lang.Runnable
Thread.run()
public int read() throws java.io.IOException
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.read
in class java.io.InputStream
-1
if the end of the
stream is reached.java.io.IOException
- If an I/O error occurs.public int available() throws java.io.IOException
available
in class java.io.InputStream
java.io.IOException
- If an I/O error occurs.public void close() throws java.io.IOException
close
in interface java.lang.AutoCloseable
close
in interface java.io.Closeable
close
in class java.io.InputStream
java.io.IOException
- If an I/O error occurs.public void reset() throws java.io.IOException
mark
method was last called on this input stream.
The general contract of reset
is:
markSupported
returns
true
, then:
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.
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
. markSupported
returns
false
, then:
reset
may throw an
IOException
.
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. reset
in class java.io.InputStream
java.io.IOException
- Never thrown. Just for subclassers.InputStream.mark(int)
,
IOException
public boolean markSupported()
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
.markSupported
in class java.io.InputStream
true
.InputStream.mark(int)
,
InputStream.reset()
public void mark(int readlimit)
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.
mark
in class java.io.InputStream
readlimit
- Not used.InputStream.reset()
HTML Parser is an open source library released under LGPL.