Class DirectBytefile

java.lang.Object

svm.env.dataset.Dataset

svm.env.dataset.ByteFile

svm.env.dataset.DirectBytefile

public class DirectBytefile
extends ByteFile

DirectBytefile Bridge.

Link to GitHub: Source File.

Author:

Simula Standard, S-Port: The Environment Interface, Øystein Myhre Andersen

Field Summary

Fields

Modifier and Type	Field	Description
int	MAXLOC	The variable MAXLOC indicates the maximum possible location on the external file.
private RandomAccessFile	randomAccessFile	The underlying RandomAccessFile used.

Fields inherited from class Dataset

FIL_DIRECTBYTEFILE, FIL_DIRECTFILE, FIL_INBYTEFILE, FIL_INFILE, FIL_OUTBYTEFILE, FIL_OUTFILE, FIL_PRINTFILE, fileAction, fileName, fileType, KEY_SYSIN, KEY_SYSOUT, KEY_SYSTRACE

Constructor Summary

Constructors

Constructor	Description
DirectBytefile(String fileName, int type, String action)	Construct a new DirectBytefileSpec with the given arguments.

Method Summary

Modifier and Type	Method	Description
void	clfile()	Close the underlying file
int	inbyte()	Returns a byte from the underlying RandomAccessFile
int	lastloc()	Returns the last location
void	locate(int pos)	Locate the given 'pos' on the underlying RandomAccessFile
void	outbyte(int b)	Writes a byte through the underlying RandomAccessFile

Methods inherited from class Dataset

edFileType, toString

Methods inherited from class Object

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

Field Details

randomAccessFile

private RandomAccessFile randomAccessFile

The underlying RandomAccessFile used.

MAXLOC

public int MAXLOC

The variable MAXLOC indicates the maximum possible location on the external file.

If this is not meaningful MAXLOC has the value of "maxint"-1.

The procedure "maxloc" gives access to the current MAXLOC value.

Constructor Details

DirectBytefile

public DirectBytefile(String fileName,
 int type,
 String action)

Construct a new DirectBytefileSpec with the given arguments.

Parameters:

fileName - the fileName

type - the fileType

action - the action string

Method Details

clfile

public void clfile()

Description copied from class: Dataset

Close the underlying file

Overrides:

clfile in class Dataset

inbyte

public int inbyte()

Returns a byte from the underlying RandomAccessFile

Returns:

a byte from the underlying RandomAccessFile

outbyte

public void outbyte(int b)

Writes a byte through the underlying RandomAccessFile

Parameters:

b - the byte to be written

locate

public void locate(int pos)

Locate the given 'pos' on the underlying RandomAccessFile

Parameters:

pos - the position to locate

lastloc

public int lastloc()

Returns the last location

Returns:

the last location