com.android.tools.build.apkzlib.bytestorage

Class ChunkBasedByteStorage

java.lang.Object

com.android.tools.build.apkzlib.bytestorage.ChunkBasedByteStorage

All Implemented Interfaces:

ByteStorage, java.io.Closeable, java.lang.AutoCloseable

public class ChunkBasedByteStorage
extends java.lang.Object
implements ByteStorage

Byte storage that breaks byte sources into smaller byte sources. This storage uses another storage as a delegate and, when a source is requested, it will allocate one or more sources from the delegate to build the requested source.

Method Summary

Modifier and Type	Method and Description
void	close()
CloseableByteSource	fromSource(com.google.common.io.ByteSource source) Creates a new byte source from another byte source.
CloseableByteSource	fromStream(java.io.InputStream stream) Creates a new byte source by fully reading an input stream.
long	getBytesUsed() Obtains the number of bytes currently used.
ByteStorage	getDelegate() Obtains the byte storage chunks are allocated from.
long	getMaxBytesUsed() Obtains the maximum number of bytes ever used by this tracker.
CloseableByteSourceFromOutputStreamBuilder	makeBuilder() Creates a builder that is an output stream and can create a byte source.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getDelegate

public ByteStorage getDelegate()

Obtains the byte storage chunks are allocated from.

fromStream

public CloseableByteSource fromStream(java.io.InputStream stream)
                               throws java.io.IOException

Description copied from interface: ByteStorage

Creates a new byte source by fully reading an input stream.

Specified by:

fromStream in interface ByteStorage

Parameters:

stream - the input stream

Returns:

a byte source containing the cached data from the given stream

Throws:

java.io.IOException - failed to read the stream

makeBuilder

public CloseableByteSourceFromOutputStreamBuilder makeBuilder()
                                                       throws java.io.IOException

Description copied from interface: ByteStorage

Creates a builder that is an output stream and can create a byte source.

Specified by:

makeBuilder in interface ByteStorage

Returns:

a builder where data can be written to and a CloseableByteSource can eventually be obtained from

Throws:

java.io.IOException - failed to create the builder; this may happen if the builder require some preparation such as temporary storage allocation that may fail

fromSource

public CloseableByteSource fromSource(com.google.common.io.ByteSource source)
                               throws java.io.IOException

Description copied from interface: ByteStorage

Creates a new byte source from another byte source.

Specified by:

fromSource in interface ByteStorage

Parameters:

source - the byte source to copy data from

Returns:

the tracked byte source

Throws:

java.io.IOException - failed to read data from the byte source

getBytesUsed

public long getBytesUsed()

Description copied from interface: ByteStorage

Obtains the number of bytes currently used.

Specified by:

getBytesUsed in interface ByteStorage

Returns:

the number of bytes

getMaxBytesUsed

public long getMaxBytesUsed()

Description copied from interface: ByteStorage

Obtains the maximum number of bytes ever used by this tracker.

Specified by:

getMaxBytesUsed in interface ByteStorage

Returns:

the number of bytes

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException