com.facebook.soloader

Class ElfZipFileChannel

java.lang.Object

com.facebook.soloader.ElfZipFileChannel

All Implemented Interfaces:

ElfByteChannel, java.io.Closeable, java.lang.AutoCloseable, java.nio.channels.ByteChannel, java.nio.channels.Channel, java.nio.channels.ReadableByteChannel, java.nio.channels.WritableByteChannel

public class ElfZipFileChannel
extends java.lang.Object
implements ElfByteChannel

Constructor Summary

Constructors

Constructor and Description
ElfZipFileChannel(java.util.zip.ZipFile zipFile, java.util.zip.ZipEntry zipEntry)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	isOpen()
long	position()
ElfByteChannel	position(long newPosition)
int	read(java.nio.ByteBuffer dst) Reads a sequence of bytes from this channel into the given buffer.
int	read(java.nio.ByteBuffer dst, long position) Reads a sequence of bytes from this channel into the given buffer, starting at the given file position.
long	size()
ElfByteChannel	truncate(long size)
int	write(java.nio.ByteBuffer src)

Methods inherited from class java.lang.Object

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

Constructor Detail

ElfZipFileChannel

public ElfZipFileChannel(java.util.zip.ZipFile zipFile,
                         java.util.zip.ZipEntry zipEntry)
                  throws java.io.IOException

Throws:

java.io.IOException

Method Detail

position

public long position()
              throws java.io.IOException

Specified by:

position in interface ElfByteChannel

Throws:

java.io.IOException

position

public ElfByteChannel position(long newPosition)
                        throws java.io.IOException

Specified by:

position in interface ElfByteChannel

Throws:

java.io.IOException

read

public int read(java.nio.ByteBuffer dst)
         throws java.io.IOException

Reads a sequence of bytes from this channel into the given buffer. Bytes are read starting at this channel's current file position, and then the file position is updated with the number of bytes actually read.

Specified by:

read in interface ElfByteChannel

Specified by:

read in interface java.nio.channels.ReadableByteChannel

Returns:

The number of bytes read, possibly zero, or -1 if the channel has reached end-of-stream

Throws:

java.io.IOException

read

public int read(java.nio.ByteBuffer dst,
                long position)
         throws java.io.IOException

Reads a sequence of bytes from this channel into the given buffer, starting at the given file position.

N.B. The file position is updated with the number of bytes actually read. It's different from FileChannel.html#read(java.nio.ByteBuffer, long).

Specified by:

read in interface ElfByteChannel

Returns:

The number of bytes read, possibly zero, or -1 if the given position is greater than or equal to the file's current size

Throws:

java.io.IOException

size

public long size()
          throws java.io.IOException

Specified by:

size in interface ElfByteChannel

Throws:

java.io.IOException

truncate

public ElfByteChannel truncate(long size)
                        throws java.io.IOException

Specified by:

truncate in interface ElfByteChannel

Throws:

java.io.IOException

write

public int write(java.nio.ByteBuffer src)
          throws java.io.IOException

Specified by:

write in interface ElfByteChannel

Specified by:

write in interface java.nio.channels.WritableByteChannel

Throws:

java.io.IOException

isOpen

public boolean isOpen()

Specified by:

isOpen in interface java.nio.channels.Channel

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.nio.channels.Channel

Throws:

java.io.IOException