org.archive.util.ms
Interface BlockFileSystem

All Known Implementing Classes:

DefaultBlockFileSystem

public interface BlockFileSystem

Describes the internal file system contained in .doc files.

Field Summary

static int

BLOCK_SIZE The size of a block in bytes.

Method Summary

int	getNextBlock(int block) Returns the number of the block that follows the given block.
SeekInputStream	getRawInput() Returns the raw input stream for this file system.
Entry	getRoot() Returns the root entry of the file system.

Field Detail

BLOCK_SIZE

static final int BLOCK_SIZE

The size of a block in bytes.

See Also:

Constant Field Values

Method Detail

getRoot

Entry getRoot()
              throws java.io.IOException

Returns the root entry of the file system. Subfiles and directories can be found by searching the returned entry.

Returns:

the root entry

Throws:

java.io.IOException - if an IO error occurs

getNextBlock

int getNextBlock(int block)
                 throws java.io.IOException

Returns the number of the block that follows the given block. The internal block allocation tables are consulted to determine the next block. A return value that is less than zero indicates that there is no next block.

Parameters:

block - the number of block whose successor to return

Returns:

the successor of that block

Throws:

java.io.IOException - if an IO error occurs

getRawInput

SeekInputStream getRawInput()

Returns the raw input stream for this file system. Typically this will be the random access file containing the .doc.

Returns:

the raw input stream for this file system