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java.lang.Objectjava.io.InputStream
org.tukaani.xz.DeltaInputStream
public class DeltaInputStream
Decodes raw Delta-filtered data (no XZ headers).
The delta filter doesn't change the size of the data and thus it cannot have an end-of-payload marker. It will simply decode until its input stream indicates end of input.
Field Summary | |
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static int |
DISTANCE_MAX
Largest supported delta calculation distance. |
static int |
DISTANCE_MIN
Smallest supported delta calculation distance. |
Constructor Summary | |
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DeltaInputStream(java.io.InputStream in,
int distance)
Creates a new Delta decoder with the given delta calculation distance. |
Method Summary | |
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int |
available()
Calls in.available() . |
void |
close()
Closes the stream and calls in.close() . |
int |
read()
Decode the next byte from this input stream. |
int |
read(byte[] buf,
int off,
int len)
Decode into an array of bytes. |
Methods inherited from class java.io.InputStream |
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mark, markSupported, read, reset, skip |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int DISTANCE_MIN
public static final int DISTANCE_MAX
Constructor Detail |
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public DeltaInputStream(java.io.InputStream in, int distance)
in
- input stream from which Delta filtered data
is readdistance
- delta calculation distance, must be in the
range [DISTANCE_MIN
,
DISTANCE_MAX
]Method Detail |
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public int read() throws java.io.IOException
read
in class java.io.InputStream
-1
to indicate
the end of input on the input stream in
java.io.IOException
- may be thrown by in
public int read(byte[] buf, int off, int len) throws java.io.IOException
This calls in.read(buf, off, len)
and defilters the
returned data.
read
in class java.io.InputStream
buf
- target buffer for decoded dataoff
- start offset in buf
len
- maximum number of bytes to read
-1
to indicate
the end of the input stream in
XZIOException
- if the stream has been closed
java.io.IOException
- may be thrown by underlaying input
stream in
public int available() throws java.io.IOException
in.available()
.
available
in class java.io.InputStream
in.available()
java.io.IOException
public void close() throws java.io.IOException
in.close()
.
If the stream was already closed, this does nothing.
close
in interface java.io.Closeable
close
in class java.io.InputStream
java.io.IOException
- if thrown by in.close()
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