org.jouvieje.bass.misc
Class FileReaderUtils

java.lang.Object
  org.jouvieje.bass.misc.FileReaderUtils

All Implemented Interfaces:

org.jouvieje.bass.misc.SizeOfPrimitive

public class FileReaderUtils

extends java.lang.Object

implements org.jouvieje.bass.misc.SizeOfPrimitive

This class allow you to read some datas from a RandomAccessFile object.

Field Summary

static int	SIZEOF_BYTE Size of a byte in bytes !!!
static int	SIZEOF_CHAR Size of a char in bytes
static int	SIZEOF_DOUBLE Size of a double in bytes
static int	SIZEOF_FLOAT Size of a float in bytes
static int	SIZEOF_INT Size of an int in bytes
static int	SIZEOF_LONG Size of a long in bytes
static int	SIZEOF_SHORT Size of a short in bytes

Constructor Summary

FileReaderUtils()

Method Summary

static byte	readByte(java.io.RandomAccessFile file) Read a simple byte into the file.
static void	readByteArray(java.io.RandomAccessFile file, byte[] datas, int offset, int nbBytes) Read a byte[] from a file.
static byte[]	readByteArray(java.io.RandomAccessFile file, int nbBytes) Read a byte[] from a file.
static void	readByteBuffer(java.io.RandomAccessFile file, java.nio.ByteBuffer buffer, int nbBytes) Read a ByteBuffer from a file.
static java.nio.ByteBuffer	readByteBuffer(java.io.RandomAccessFile file, int nbBytes) Read a ByteBuffer from a file.
static char	readChar(java.io.RandomAccessFile file) Read a char from 2 bytes of the file.
static double	readDouble(java.io.RandomAccessFile file) Read a double from 8 bytes of the file.
static float	readFloat(java.io.RandomAccessFile file) Read a float from 4 bytes of the file.
static int	readInt(java.io.RandomAccessFile file) Read an int from 4 bytes of the file.
static long	readLong(java.io.RandomAccessFile file) Read a long from 8 bytes of the file.
static short	readShort(java.io.RandomAccessFile file) Read a short from 2 bytes of the file.

Methods inherited from class java.lang.Object

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

Field Detail

SIZEOF_BYTE

public static final int SIZEOF_BYTE

Size of a byte in bytes !!!

See Also:

Constant Field Values

SIZEOF_CHAR

public static final int SIZEOF_CHAR

Size of a char in bytes

See Also:

Constant Field Values

SIZEOF_SHORT

public static final int SIZEOF_SHORT

Size of a short in bytes

See Also:

Constant Field Values

SIZEOF_INT

public static final int SIZEOF_INT

Size of an int in bytes

See Also:

Constant Field Values

SIZEOF_LONG

public static final int SIZEOF_LONG

Size of a long in bytes

See Also:

Constant Field Values

SIZEOF_FLOAT

public static final int SIZEOF_FLOAT

Size of a float in bytes

See Also:

Constant Field Values

SIZEOF_DOUBLE

public static final int SIZEOF_DOUBLE

Size of a double in bytes

See Also:

Constant Field Values

Constructor Detail

FileReaderUtils

public FileReaderUtils()

Method Detail

readByte

public static byte readByte(java.io.RandomAccessFile file)
                     throws java.io.IOException

Read a simple byte into the file.

Returns:

the byte read from the file

Throws:

java.io.IOException - if an I/O error occures.

readShort

public static short readShort(java.io.RandomAccessFile file)
                       throws java.io.IOException

Read a short from 2 bytes of the file.

Returns:

the short read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readChar

public static char readChar(java.io.RandomAccessFile file)
                     throws java.io.IOException

Read a char from 2 bytes of the file.

Returns:

the char read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readInt

public static int readInt(java.io.RandomAccessFile file)
                   throws java.io.IOException

Read an int from 4 bytes of the file.

Returns:

the int read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readFloat

public static float readFloat(java.io.RandomAccessFile file)
                       throws java.io.IOException

Read a float from 4 bytes of the file.

Returns:

the float read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readLong

public static long readLong(java.io.RandomAccessFile file)
                     throws java.io.IOException

Read a long from 8 bytes of the file.

Returns:

the long read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readDouble

public static double readDouble(java.io.RandomAccessFile file)
                         throws java.io.IOException

Read a double from 8 bytes of the file.

Returns:

the double read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readByteArray

public static byte[] readByteArray(java.io.RandomAccessFile file,
                                   int nbBytes)
                            throws java.io.IOException

Read a byte[] from a file.

Parameters:

nbBytes - number of bytes to read.

Returns:

the byte[] read from the file.

Throws:

java.io.IOException - if an I/O error occures.

readByteArray

public static void readByteArray(java.io.RandomAccessFile file,
                                 byte[] datas,
                                 int offset,
                                 int nbBytes)
                          throws java.io.IOException

Read a byte[] from a file.

Parameters:

datas - byte[] into which the data is read.

offset - offset

nbBytes - number of bytes to be read.

Throws:

java.io.IOException - if an I/O error occures.

readByteBuffer

public static java.nio.ByteBuffer readByteBuffer(java.io.RandomAccessFile file,
                                                 int nbBytes)
                                          throws java.io.IOException

Read a ByteBuffer from a file.

Parameters:

nbBytes - number of bytes to be read.

Returns:

the ByteBuffer read from the file

Throws:

java.io.IOException - if an I/O error occures.

readByteBuffer

public static void readByteBuffer(java.io.RandomAccessFile file,
                                  java.nio.ByteBuffer buffer,
                                  int nbBytes)
                           throws java.io.IOException

Read a ByteBuffer from a file.

Parameters:

buffer - ByteBuffer into which the data is read.

nbBytes - number of bytes to be read.

Throws:

java.io.IOException - if an I/O error occures.