de.quippy.javamod.io

Class RandomAccessInputStreamImpl

java.lang.Object

java.io.InputStream

de.quippy.javamod.io.RandomAccessInputStreamImpl

All Implemented Interfaces:

RandomAccessInputStream, Closeable, AutoCloseable

Direct Known Subclasses:

ModfileInputStream

public class RandomAccessInputStreamImpl
extends InputStream
implements RandomAccessInputStream

This class mappes the RandomAccessFile to an InputStream type of class. You can also instantiate this class with an URL. If this URL is not of protocol type "file://" the ressource will get downloaded and written to a tmp file. The tempfile will be deleted with calling of "close". Furthermore this input stream will also handle zip compressed content If nothing else works the fallback strategy is to use an internal buffer. This will be also used by PowerPacked Modes (see ModfileInputSteam)

Since:

31.12.2007

Author:

Daniel Becker

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buffer
protected int	bufferLength
protected File	localFile
protected int	mark
protected RandomAccessFile	raFile
protected int	readPointer
protected File	tmpFile

Constructor Summary

Constructors

Constructor and Description
RandomAccessInputStreamImpl(File file) Constructor for RandomAccessInputStreamImpl
RandomAccessInputStreamImpl(String fileName) Constructor for RandomAccessInputStreamImpl
RandomAccessInputStreamImpl(URL fromUrl)

Method Summary

Methods

Modifier and Type	Method and Description
int	available()
void	close()
File	getFile() Will return the local file this RandomAccessFile works on or null using local buffer and no file
long	getFilePointer()
long	getLength()
long	length()
void	mark(int readlimit)
boolean	markSupported()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
boolean	readBoolean()
byte	readByte()
char	readChar()
double	readDouble()
float	readFloat()
int	readFully(byte[] b)
int	readFully(byte[] b, int offs, int len)
int	readInt()
String	readLine()
long	readLong()
short	readShort()
int	readUnsignedByte()
int	readUnsignedShort()
String	readUTF()
void	reset()
void	seek(long pos)
long	skip(long n)
int	skipBytes(int n) Mapping to RandomAccessFile

Methods inherited from class java.lang.Object

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

Field Detail

raFile

protected RandomAccessFile raFile

localFile

protected File localFile

tmpFile

protected File tmpFile

mark

protected int mark

buffer

protected byte[] buffer

readPointer

protected int readPointer

bufferLength

protected int bufferLength

Constructor Detail

RandomAccessInputStreamImpl

public RandomAccessInputStreamImpl(File file)
                            throws IOException,
                                   FileNotFoundException

Constructor for RandomAccessInputStreamImpl

Parameters:

file -

Throws:

FileNotFoundException

IOException

RandomAccessInputStreamImpl

public RandomAccessInputStreamImpl(String fileName)
                            throws IOException,
                                   FileNotFoundException

Constructor for RandomAccessInputStreamImpl

Parameters:

fileName -

Throws:

FileNotFoundException

IOException

RandomAccessInputStreamImpl

public RandomAccessInputStreamImpl(URL fromUrl)
                            throws IOException,
                                   FileNotFoundException

Throws:

IOException

FileNotFoundException

Method Detail

getFile

public File getFile()

Will return the local file this RandomAccessFile works on or null using local buffer and no file

Specified by:

getFile in interface RandomAccessInputStream

Returns:

Since:

09.01.2011

available

public int available()
              throws IOException

Specified by:

available in interface RandomAccessInputStream

Overrides:

available in class InputStream

Returns:

Throws:

IOException

See Also:

InputStream.available()

close

public void close()
           throws IOException

Specified by:

close in interface RandomAccessInputStream

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class InputStream

Throws:

IOException

See Also:

InputStream.close()

mark

public void mark(int readlimit)

Specified by:

mark in interface RandomAccessInputStream

Overrides:

mark in class InputStream

Parameters:

readlimit -

See Also:

InputStream.mark(int)

markSupported

public boolean markSupported()

Specified by:

markSupported in interface RandomAccessInputStream

Overrides:

markSupported in class InputStream

Returns:

See Also:

InputStream.markSupported()

read

public int read()
         throws IOException

Specified by:

read in interface RandomAccessInputStream

Specified by:

read in class InputStream

Returns:

Throws:

IOException

See Also:

InputStream.read()

read

public int read(byte[] b,
       int off,
       int len)
         throws IOException

Specified by:

read in interface RandomAccessInputStream

Overrides:

read in class InputStream

Parameters:

b -

off -

len -

Returns:

Throws:

IOException

See Also:

InputStream.read(byte[], int, int)

read

public int read(byte[] b)
         throws IOException

Specified by:

read in interface RandomAccessInputStream

Overrides:

read in class InputStream

Parameters:

b -

Returns:

Throws:

IOException

See Also:

InputStream.read(byte[])

reset

public void reset()
           throws IOException

Specified by:

reset in interface RandomAccessInputStream

Overrides:

reset in class InputStream

Throws:

IOException

See Also:

InputStream.reset()

skip

public long skip(long n)
          throws IOException

Specified by:

skip in interface RandomAccessInputStream

Overrides:

skip in class InputStream

Parameters:

n -

Returns:

Throws:

IOException

See Also:

InputStream.skip(long)

skipBytes

public int skipBytes(int n)
              throws IOException

Mapping to RandomAccessFile

Specified by:

skipBytes in interface RandomAccessInputStream

Throws:

IOException

getFilePointer

public long getFilePointer()
                    throws IOException

Specified by:

getFilePointer in interface RandomAccessInputStream

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in interface RandomAccessInputStream

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface RandomAccessInputStream

Throws:

IOException

getLength

public long getLength()
               throws IOException

Specified by:

getLength in interface RandomAccessInputStream

Throws:

IOException

length

public long length()
            throws IOException

Specified by:

length in interface RandomAccessInputStream

Throws:

IOException

readFully

public int readFully(byte[] b)
              throws IOException

Specified by:

readFully in interface RandomAccessInputStream

Throws:

IOException

readFully

public int readFully(byte[] b,
            int offs,
            int len)
              throws IOException

Specified by:

readFully in interface RandomAccessInputStream

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface RandomAccessInputStream

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface RandomAccessInputStream

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface RandomAccessInputStream

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface RandomAccessInputStream

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface RandomAccessInputStream

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface RandomAccessInputStream

Throws:

IOException

readLine

public String readLine()
                throws IOException

Specified by:

readLine in interface RandomAccessInputStream

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface RandomAccessInputStream

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface RandomAccessInputStream

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface RandomAccessInputStream

Throws:

IOException

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface RandomAccessInputStream

Throws:

IOException