public class CPXInputStream extends FilterInputStream implements CPXConsts
in
MAGIC_NUMBER, XL_PLAIN, XL_ZIP_CRYPT
Constructor and Description |
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CPXInputStream(InputStream in)
Creates a new instance of CPXInputStream
|
Modifier and Type | Method and Description |
---|---|
int |
available()
This method returns 1 if we've not reached EOF, 0 if we have.
|
void |
close()
Closes this input stream and releases any system resources
associated with the stream.
|
protected boolean |
decryptChunk()
Call when inflater indicates that it needs more bytes.
|
boolean |
markSupported()
We do not allow marking
|
int |
read()
Reads the next byte of data from this input stream.
|
int |
read(byte[] b)
Reads up to
byte.length bytes of data from this
input stream into an array of bytes. |
int |
read(byte[] b,
int off,
int len)
Reads up to
len bytes of data from this input stream
into an array of bytes. |
long |
skip(long n)
Skips bytes by reading them into a cached buffer
|
mark, reset
public CPXInputStream(InputStream in) throws IOException
IOException
public boolean markSupported()
markSupported
in class FilterInputStream
public void close() throws IOException
in.close()
.close
in interface Closeable
close
in interface AutoCloseable
close
in class FilterInputStream
IOException
- if an I/O error occurs.FilterInputStream.in
public int read() throws 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.
This method
simply performs in.read()
and returns the result.
read
in class FilterInputStream
-1
if the end of the
stream is reached.IOException
- if an I/O error occurs.FilterInputStream.in
public int read(byte[] b) throws IOException
byte.length
bytes of data from this
input stream into an array of bytes. This method blocks until some
input is available.
This method simply performs the call
read(b, 0, b.length)
and returns
the result. It is important that it does
not do in.read(b)
instead;
certain subclasses of FilterInputStream
depend on the implementation strategy actually
used.
read
in class FilterInputStream
b
- the buffer into which the data is read.-1
if there is no more data because the end of
the stream has been reached.IOException
- if an I/O error occurs.FilterInputStream.read(byte[], int, int)
public int read(byte[] b, int off, int len) throws IOException
len
bytes of data from this input stream
into an array of bytes. This method blocks until some input is
available.
This method simply performs in.read(b, off, len)
and returns the result.
read
in class FilterInputStream
b
- the buffer into which the data is read.off
- the start offset of the data.len
- the maximum number of bytes read.-1
if there is no more data because the end of
the stream has been reached.IOException
- if an I/O error occurs.FilterInputStream.in
protected boolean decryptChunk() throws IOException
IOException
public int available()
available
in class FilterInputStream
public long skip(long n) throws IOException
skip
in class FilterInputStream
IOException
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