dev.advo.fs.fs.Index Class Reference

An Index points to a file in the main_file_cache.dat file. More...

Public Member Functions
int	getBlock ()
	Gets the first block of the file.
int	getSize ()
	Gets the size of the file.
	Index (int size, int block)
	Creates the index.

Static Public Member Functions
static Index	decode (byte[] buffer)
	Decodes a buffer into an index.

Private Attributes
final int	block
	The first block of the file.
final int	size
	The size of the file.

Detailed Description

An Index points to a file in the main_file_cache.dat file.

Author

Graham

Definition at line 7 of file Index.java.

Constructor & Destructor Documentation

Index()

dev.advo.fs.fs.Index.Index	(	int	size,
		int	block )

Creates the index.

Parameters

size	The size of the file.
block	The first block of the file.

Definition at line 41 of file Index.java.

                                      {
        this.size = size;
        this.block = block;
    }

References block, and size.

Referenced by decode().

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Member Function Documentation

decode()

Index dev.advo.fs.fs.Index.decode ( byte[] buffer )

static

Decodes a buffer into an index.

Parameters

buffer

The buffer.

Returns

The decoded Index.

Exceptions

IllegalArgumentException

if the buffer length is invalid.

Definition at line 15 of file Index.java.

                                              {
        if (buffer.length != FileSystemConstants.INDEX_SIZE) {
            throw new IllegalArgumentException("Incorrect buffer length.");
        }
        
        int size = ((buffer[0] & 0xFF) << 16) | ((buffer[1] & 0xFF) << 8) | (buffer[2] & 0xFF);
        int block = ((buffer[3] & 0xFF) << 16) | ((buffer[4] & 0xFF) << 8) | (buffer[5] & 0xFF);
        
        return new Index(size, block);
    }

References block, Index(), dev.advo.fs.fs.FileSystemConstants.INDEX_SIZE, and size.

Referenced by dev.advo.fs.fs.IndexedFileSystem.getIndex().

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getBlock()

int dev.advo.fs.fs.Index.getBlock

(

)

Gets the first block of the file.

Returns

The first block of the file.

Definition at line 58 of file Index.java.

                          {
        return block;
    }

References block.

getSize()

int dev.advo.fs.fs.Index.getSize

(

)

Gets the size of the file.

Returns

The size of the file.

Definition at line 50 of file Index.java.

                         {
        return size;
    }

References size.

Member Data Documentation

block

final int dev.advo.fs.fs.Index.block

private

The first block of the file.

Definition at line 34 of file Index.java.

Referenced by decode(), getBlock(), and Index().

size

final int dev.advo.fs.fs.Index.size

private

The size of the file.

Definition at line 29 of file Index.java.

Referenced by decode(), getSize(), and Index().

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The documentation for this class was generated from the following file:

• java/dev/advo/fs/fs/Index.java