com.asakusafw.runtime.io.util

Class BufferedFileInput

java.lang.Object

com.asakusafw.runtime.io.util.BufferedFileInput

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable, RandomAccess

public class BufferedFileInput
extends Object
implements RandomAccess, DataInput, Closeable

An implementation of DataInput for RandomAccessFile.

Since:

0.7.0

Constructor Summary

Constructors

Constructor and Description
BufferedFileInput(RandomAccessFile file, byte[] buffer) Creates a new instance.
BufferedFileInput(RandomAccessFile file, int bufferSize) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
void	close()
long	getPosition() Returns the current file position in bytes.
long	getSize() Returns the file size in bytes.
boolean	readBoolean()
byte	readByte()
char	readChar()
double	readDouble()
float	readFloat()
void	readFully(byte[] b)
void	readFully(byte[] b, int off, int len)
int	readInt()
String	readLine()
long	readLong()
short	readShort()
int	readUnsignedByte()
int	readUnsignedShort()
String	readUTF()
void	seek(long position) Sets cursor in the target file.
int	skipBytes(int n)
void	sync() Resets internal buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferedFileInput

public BufferedFileInput(RandomAccessFile file,
                         int bufferSize)

Creates a new instance.

Parameters:

bufferSize - the buffer size

file - the target file

BufferedFileInput

public BufferedFileInput(RandomAccessFile file,
                         byte[] buffer)

Creates a new instance.

Parameters:

buffer - internal buffer

file - the target file

Method Detail

sync

public void sync()
          throws IOException

Resets internal buffer.

Throws:

IOException - if failed by I/O error

seek

public void seek(long position)
          throws IOException

Sets cursor in the target file.

Parameters:

position - the new position

Throws:

IOException - if failed by I/O error

getPosition

public long getPosition()
                 throws IOException

Returns the current file position in bytes.

Returns:

the current position

Throws:

IOException - if failed by I/O error

getSize

public long getSize()
             throws IOException

Returns the file size in bytes.

Returns:

the file size

Throws:

IOException - if failed by I/O error

readFully

public void readFully(byte[] b)
               throws IOException

Specified by:

readFully in interface DataInput

Throws:

IOException

readFully

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

Specified by:

readFully in interface DataInput

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Specified by:

skipBytes in interface DataInput

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface DataInput

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface DataInput

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface DataInput

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface DataInput

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface DataInput

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface DataInput

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface DataInput

Throws:

IOException

readLine

public String readLine()
                throws IOException

Specified by:

readLine in interface DataInput

Throws:

IOException

readUTF

public String readUTF()
               throws IOException

Specified by:

readUTF in interface DataInput

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException