net.metanotion.io
Class RAIFile

java.lang.Object
  net.metanotion.io.RAIFile

All Implemented Interfaces:

DataInput, DataOutput, RandomAccessInterface

public class RAIFile
extends Object
implements RandomAccessInterface, DataInput, DataOutput

Constructor Summary

RAIFile(File file, boolean read, boolean write)

RAIFile(RandomAccessFile file)

Method Summary

boolean	canWrite() I2P is the file writable? Only valid if the File constructor was used, not the RAF constructor
void	close()
long	getFilePointer()
long	length()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
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	readUnsignedInt() I2P
int	readUnsignedShort()
String	readUTF() Read a UTF encoded string I would delegate here.
void	seek(long pos)
void	setLength(long newLength)
int	skipBytes(int n)
String	toString()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)
void	writeBoolean(boolean v)
void	writeByte(int v)
void	writeBytes(String s)
void	writeChar(int v)
void	writeChars(String s)
void	writeDouble(double v)
void	writeFloat(float v)
void	writeInt(int v)
void	writeLong(long v)
void	writeShort(int v)
void	writeUTF(String str) Write a UTF encoded string I would delegate here.

Methods inherited from class java.lang.Object

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

Constructor Detail

RAIFile

public RAIFile(RandomAccessFile file)
        throws FileNotFoundException

Throws:

FileNotFoundException

RAIFile

public RAIFile(File file,
               boolean read,
               boolean write)
        throws FileNotFoundException

Parameters:

read - must be true

Throws:

FileNotFoundException

Method Detail

canWrite

public boolean canWrite()

I2P is the file writable? Only valid if the File constructor was used, not the RAF constructor

Specified by:

canWrite in interface RandomAccessInterface

Since:

0.8.8

toString

public String toString()

Overrides:

toString in class Object

Since:

0.8.8

getFilePointer

public long getFilePointer()
                    throws IOException

Specified by:

getFilePointer in interface RandomAccessInterface

Throws:

IOException

length

public long length()
            throws IOException

Specified by:

length in interface RandomAccessInterface

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in interface RandomAccessInterface

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Specified by:

read in interface RandomAccessInterface

Throws:

IOException

read

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

Specified by:

read in interface RandomAccessInterface

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Specified by:

seek in interface RandomAccessInterface

Throws:

IOException

setLength

public void setLength(long newLength)
               throws IOException

Specified by:

setLength in interface RandomAccessInterface

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface RandomAccessInterface

Throws:

IOException

readBoolean

public boolean readBoolean()
                    throws IOException

Specified by:

readBoolean in interface DataInput

Specified by:

readBoolean in interface RandomAccessInterface

Throws:

IOException

readByte

public byte readByte()
              throws IOException

Specified by:

readByte in interface DataInput

Specified by:

readByte in interface RandomAccessInterface

Throws:

IOException

readChar

public char readChar()
              throws IOException

Specified by:

readChar in interface DataInput

Specified by:

readChar in interface RandomAccessInterface

Throws:

IOException

readDouble

public double readDouble()
                  throws IOException

Specified by:

readDouble in interface DataInput

Specified by:

readDouble in interface RandomAccessInterface

Throws:

IOException

readFloat

public float readFloat()
                throws IOException

Specified by:

readFloat in interface DataInput

Specified by:

readFloat in interface RandomAccessInterface

Throws:

IOException

readFully

public void readFully(byte[] b)
               throws IOException

Specified by:

readFully in interface DataInput

Specified by:

readFully in interface RandomAccessInterface

Throws:

IOException

readFully

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

Specified by:

readFully in interface DataInput

Specified by:

readFully in interface RandomAccessInterface

Throws:

IOException

readInt

public int readInt()
            throws IOException

Specified by:

readInt in interface DataInput

Specified by:

readInt in interface RandomAccessInterface

Throws:

IOException

readLine

public String readLine()
                throws IOException

Specified by:

readLine in interface DataInput

Specified by:

readLine in interface RandomAccessInterface

Throws:

IOException

readLong

public long readLong()
              throws IOException

Specified by:

readLong in interface DataInput

Specified by:

readLong in interface RandomAccessInterface

Throws:

IOException

readShort

public short readShort()
                throws IOException

Specified by:

readShort in interface DataInput

Specified by:

readShort in interface RandomAccessInterface

Throws:

IOException

readUnsignedByte

public int readUnsignedByte()
                     throws IOException

Specified by:

readUnsignedByte in interface DataInput

Specified by:

readUnsignedByte in interface RandomAccessInterface

Throws:

IOException

readUnsignedShort

public int readUnsignedShort()
                      throws IOException

Specified by:

readUnsignedShort in interface DataInput

Specified by:

readUnsignedShort in interface RandomAccessInterface

Throws:

IOException

readUnsignedInt

public int readUnsignedInt()
                    throws IOException

I2P

Specified by:

readUnsignedInt in interface RandomAccessInterface

Throws:

IOException - if the read value is negative

readUTF

public String readUTF()
               throws IOException

Read a UTF encoded string I would delegate here. But Java's read/writeUTF combo suck. A signed 2 byte length is not enough. This reads a 4 byte length. The upper byte MUST be zero, if its not, then its not this method and has used an extensible length encoding. This is followed by the bytes of the UTF encoded string, as returned by String.getBytes("UTF-8");

Specified by:

readUTF in interface DataInput

Specified by:

readUTF in interface RandomAccessInterface

Throws:

IOException

skipBytes

public int skipBytes(int n)
              throws IOException

Specified by:

skipBytes in interface DataInput

Specified by:

skipBytes in interface RandomAccessInterface

Throws:

IOException

write

public void write(int b)
           throws IOException

Specified by:

write in interface DataOutput

Specified by:

write in interface RandomAccessInterface

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Specified by:

write in interface DataOutput

Specified by:

write in interface RandomAccessInterface

Throws:

IOException

write

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

Specified by:

write in interface DataOutput

Specified by:

write in interface RandomAccessInterface

Throws:

IOException

writeBoolean

public void writeBoolean(boolean v)
                  throws IOException

Specified by:

writeBoolean in interface DataOutput

Specified by:

writeBoolean in interface RandomAccessInterface

Throws:

IOException

writeByte

public void writeByte(int v)
               throws IOException

Specified by:

writeByte in interface DataOutput

Specified by:

writeByte in interface RandomAccessInterface

Throws:

IOException

writeShort

public void writeShort(int v)
                throws IOException

Specified by:

writeShort in interface DataOutput

Specified by:

writeShort in interface RandomAccessInterface

Throws:

IOException

writeChar

public void writeChar(int v)
               throws IOException

Specified by:

writeChar in interface DataOutput

Specified by:

writeChar in interface RandomAccessInterface

Throws:

IOException

writeInt

public void writeInt(int v)
              throws IOException

Specified by:

writeInt in interface DataOutput

Specified by:

writeInt in interface RandomAccessInterface

Throws:

IOException

writeLong

public void writeLong(long v)
               throws IOException

Specified by:

writeLong in interface DataOutput

Specified by:

writeLong in interface RandomAccessInterface

Throws:

IOException

writeFloat

public void writeFloat(float v)
                throws IOException

Specified by:

writeFloat in interface DataOutput

Specified by:

writeFloat in interface RandomAccessInterface

Throws:

IOException

writeDouble

public void writeDouble(double v)
                 throws IOException

Specified by:

writeDouble in interface DataOutput

Specified by:

writeDouble in interface RandomAccessInterface

Throws:

IOException

writeBytes

public void writeBytes(String s)
                throws IOException

Specified by:

writeBytes in interface DataOutput

Specified by:

writeBytes in interface RandomAccessInterface

Throws:

IOException

writeChars

public void writeChars(String s)
                throws IOException

Specified by:

writeChars in interface DataOutput

Specified by:

writeChars in interface RandomAccessInterface

Throws:

IOException

writeUTF

public void writeUTF(String str)
              throws IOException

Write a UTF encoded string I would delegate here. But Java's read/writeUTF combo suck. A signed 2 byte length is not enough. This writes a 4 byte length. The upper byte MUST be zero, if its not, then its not this method and has used an extensible length encoding. This is followed by the bytes of the UTF encoded string, as returned by String.getBytes("UTF-8");

Specified by:

writeUTF in interface DataOutput

Specified by:

writeUTF in interface RandomAccessInterface

Throws:

IOException