Class LimitedInputStream
java.lang.Object
java.io.InputStream
java.io.FilterInputStream
com.vaadin.external.apache.commons.fileupload2.util.LimitedInputStream
- All Implemented Interfaces:
Closeable
,Closeable
,AutoCloseable
An input stream, which limits its data size. This stream is used, if the
content length is unknown.
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Field Summary
Fields inherited from class java.io.FilterInputStream
in
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Constructor Summary
ConstructorDescriptionLimitedInputStream
(InputStream inputStream, long pSizeMax) Creates a new instance. -
Method Summary
Modifier and TypeMethodDescriptionvoid
close()
Closes this input stream and releases any system resources associated with the stream.boolean
isClosed()
Returns, whether this stream is already closed.protected abstract void
raiseError
(long pSizeMax, long pCount) Called to indicate, that the input streams limit has been exceeded.int
read()
Reads the next byte of data from this input stream.int
read
(byte[] b, int off, int len) Reads up tolen
bytes of data from this input stream into an array of bytes.Methods inherited from class java.io.FilterInputStream
available, mark, markSupported, read, reset, skip
Methods inherited from class java.io.InputStream
nullInputStream, readAllBytes, readNBytes, readNBytes, skipNBytes, transferTo
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Constructor Details
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LimitedInputStream
Creates a new instance.- Parameters:
inputStream
- The input stream, which shall be limited.pSizeMax
- The limit; no more than this number of bytes shall be returned by the source stream.
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Method Details
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raiseError
Called to indicate, that the input streams limit has been exceeded.- Parameters:
pSizeMax
- The input streams limit, in bytes.pCount
- The actual number of bytes.- Throws:
IOException
- The called method is expected to raise an IOException.
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read
Reads the next byte of data from this input stream. The value byte is returned as anint
in the range0
to255
. 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.This method simply performs
in.read()
and returns the result.- Overrides:
read
in classFilterInputStream
- Returns:
- the next byte of data, or
-1
if the end of the stream is reached. - Throws:
IOException
- if an I/O error occurs.- See Also:
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read
Reads up tolen
bytes of data from this input stream into an array of bytes. Iflen
is not zero, the method blocks until some input is available; otherwise, no bytes are read and0
is returned.This method simply performs
in.read(b, off, len)
and returns the result.- Overrides:
read
in classFilterInputStream
- Parameters:
b
- the buffer into which the data is read.off
- The start offset in the destination arrayb
.len
- the maximum number of bytes read.- Returns:
- the total number of bytes read into the buffer, or
-1
if there is no more data because the end of the stream has been reached. - Throws:
NullPointerException
- Ifb
isnull
.IndexOutOfBoundsException
- Ifoff
is negative,len
is negative, orlen
is greater thanb.length - off
IOException
- if an I/O error occurs.- See Also:
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isClosed
Returns, whether this stream is already closed.- Specified by:
isClosed
in interfaceCloseable
- Returns:
- True, if the stream is closed, otherwise false.
- Throws:
IOException
- An I/O error occurred.
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close
Closes this input stream and releases any system resources associated with the stream. This method simply performsin.close()
.- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classFilterInputStream
- Throws:
IOException
- if an I/O error occurs.- See Also:
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