Class Pack200CompressorInputStream
- java.lang.Object
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- java.io.InputStream
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- org.apache.commons.compress.compressors.CompressorInputStream
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- org.apache.commons.compress.compressors.pack200.Pack200CompressorInputStream
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- All Implemented Interfaces:
Closeable
,AutoCloseable
public class Pack200CompressorInputStream extends CompressorInputStream
An input stream that decompresses from the Pack200 format to be read as any other stream.The
getCount
andgetBytesRead
methods always return 0.- Since:
- 1.3
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Constructor Summary
Constructors Constructor Description Pack200CompressorInputStream(File f)
Decompresses the given file, caching the decompressed data in memory.Pack200CompressorInputStream(File f, Map<String,String> props)
Decompresses the given file, caching the decompressed data in memory and using the given properties.Pack200CompressorInputStream(File f, Pack200Strategy mode)
Decompresses the given file using the given strategy to cache the results.Pack200CompressorInputStream(File f, Pack200Strategy mode, Map<String,String> props)
Decompresses the given file using the given strategy to cache the results and the given properties.Pack200CompressorInputStream(InputStream in)
Decompresses the given stream, caching the decompressed data in memory.Pack200CompressorInputStream(InputStream in, Map<String,String> props)
Decompresses the given stream, caching the decompressed data in memory and using the given properties.Pack200CompressorInputStream(InputStream in, Pack200Strategy mode)
Decompresses the given stream using the given strategy to cache the results.Pack200CompressorInputStream(InputStream in, Pack200Strategy mode, Map<String,String> props)
Decompresses the given stream using the given strategy to cache the results and the given properties.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description int
available()
void
close()
void
mark(int limit)
boolean
markSupported()
static boolean
matches(byte[] signature, int length)
Checks if the signature matches what is expected for a pack200 file (0xCAFED00D).int
read()
int
read(byte[] b)
int
read(byte[] b, int off, int count)
void
reset()
long
skip(long count)
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Methods inherited from class org.apache.commons.compress.compressors.CompressorInputStream
getBytesRead, getCount, getUncompressedCount
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Methods inherited from class java.io.InputStream
nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo
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Constructor Detail
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Pack200CompressorInputStream
public Pack200CompressorInputStream(InputStream in) throws IOException
Decompresses the given stream, caching the decompressed data in memory.When reading from a file the File-arg constructor may provide better performance.
- Parameters:
in
- the InputStream from which this object should be created- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(InputStream in, Pack200Strategy mode) throws IOException
Decompresses the given stream using the given strategy to cache the results.When reading from a file the File-arg constructor may provide better performance.
- Parameters:
in
- the InputStream from which this object should be createdmode
- the strategy to use- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(InputStream in, Map<String,String> props) throws IOException
Decompresses the given stream, caching the decompressed data in memory and using the given properties.When reading from a file the File-arg constructor may provide better performance.
- Parameters:
in
- the InputStream from which this object should be createdprops
- Pack200 properties to use- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(InputStream in, Pack200Strategy mode, Map<String,String> props) throws IOException
Decompresses the given stream using the given strategy to cache the results and the given properties.When reading from a file the File-arg constructor may provide better performance.
- Parameters:
in
- the InputStream from which this object should be createdmode
- the strategy to useprops
- Pack200 properties to use- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(File f) throws IOException
Decompresses the given file, caching the decompressed data in memory.- Parameters:
f
- the file to decompress- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(File f, Pack200Strategy mode) throws IOException
Decompresses the given file using the given strategy to cache the results.- Parameters:
f
- the file to decompressmode
- the strategy to use- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(File f, Map<String,String> props) throws IOException
Decompresses the given file, caching the decompressed data in memory and using the given properties.- Parameters:
f
- the file to decompressprops
- Pack200 properties to use- Throws:
IOException
- if reading fails
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Pack200CompressorInputStream
public Pack200CompressorInputStream(File f, Pack200Strategy mode, Map<String,String> props) throws IOException
Decompresses the given file using the given strategy to cache the results and the given properties.- Parameters:
f
- the file to decompressmode
- the strategy to useprops
- Pack200 properties to use- Throws:
IOException
- if reading fails
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Method Detail
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read
public int read() throws IOException
- Specified by:
read
in classInputStream
- Throws:
IOException
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read
public int read(byte[] b) throws IOException
- Overrides:
read
in classInputStream
- Throws:
IOException
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read
public int read(byte[] b, int off, int count) throws IOException
- Overrides:
read
in classInputStream
- Throws:
IOException
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available
public int available() throws IOException
- Overrides:
available
in classInputStream
- Throws:
IOException
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markSupported
public boolean markSupported()
- Overrides:
markSupported
in classInputStream
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mark
public void mark(int limit)
- Overrides:
mark
in classInputStream
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reset
public void reset() throws IOException
- Overrides:
reset
in classInputStream
- Throws:
IOException
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skip
public long skip(long count) throws IOException
- Overrides:
skip
in classInputStream
- Throws:
IOException
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close
public void close() throws IOException
- Specified by:
close
in interfaceAutoCloseable
- Specified by:
close
in interfaceCloseable
- Overrides:
close
in classInputStream
- Throws:
IOException
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matches
public static boolean matches(byte[] signature, int length)
Checks if the signature matches what is expected for a pack200 file (0xCAFED00D).- Parameters:
signature
- the bytes to checklength
- the number of bytes to check- Returns:
- true, if this stream is a pack200 compressed stream, false otherwise
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