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Pack200.Unpacker unpacker = Pack200.newUnpacker();
Based on 12 examples
public static interface Pack200.Unpacker
The unpacker engine converts the packed stream to a JAR file. An instance of the engine can be obtained using {@link #newUnpacker}.
Every JAR file produced by this engine will include the string "PACK200" as a zip file comment. This allows a deployer to detect if a JAR archive was packed and unpacked.
This version of the unpacker is compatible with all previous versions.
Field Summary | |
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static String |
DEFLATE_HINT
Property indicating that the unpacker should ignore all transmitted values for DEFLATE_HINT, replacing them by the given value, java.util.jar.Pack200.Unpacker.TRUE or java.util.jar.Pack200.Unpacker.FALSE. |
static String |
FALSE
The string "false", a possible value for certain properties. |
static String |
KEEP
The string "keep", a possible value for certain properties. |
static String |
PROGRESS
The unpacker's progress as a percentage, as periodically updated by the unpacker. |
static String |
TRUE
The string "true", a possible value for certain properties. |
Method Summary | |
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void |
Registers a listener for PropertyChange events on the properties map. |
SortedMap |
Get the set of this engine's properties. |
void |
Remove a listener for PropertyChange events, added by the java.util.jar.Pack200.Unpacker.addPropertyChangeListener. |
void |
unpack(File in, JarOutputStream out) Read a Pack200 archive, and write the encoded JAR to a JarOutputStream. |
void |
unpack(InputStream in, JarOutputStream out) Read a Pack200 archive, and write the encoded JAR to a JarOutputStream. |
Field Detail |
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public static final String DEFLATE_HINT
public static final String FALSE
public static final String KEEP
public static final String PROGRESS
At a minimum, the unpacker must set progress to 0 at the beginning of a packing operation, and to 100 at the end.
public static final String TRUE
Method Detail |
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public void addPropertyChangeListener(PropertyChangeListener listener)
listener
- An object to be invoked when a property is changed.public SortedMap properties()
The property map may contain pre-defined implementation specific and default properties. Users are encouraged to read the information and fully understand the implications, before modifying pre-existing properties.
Implementation specific properties are prefixed with a package name associated with the implementor, beginning with com. or a similar prefix. All property names beginning with pack. and unpack. are reserved for use by this API.
Unknown properties may be ignored or rejected with an unspecified error, and invalid entries may cause an unspecified error to be thrown.
public void removePropertyChangeListener(PropertyChangeListener listener)
listener
- The PropertyChange listener to be removed.public void unpack(File in, JarOutputStream out) throws IOException
Does not close its output. (The output can accumulate more elements.)
in
- a File.out
- a JarOutputStream.IOException
- if an error is encountered.public void unpack(InputStream in, JarOutputStream out) throws IOException
Closes its input but not its output. (The output can accumulate more elements.)
in
- an InputStream.out
- a JarOutputStream.IOException
- if an error is encountered.
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