com.dpsframework.util

Class CommandLineReader

java.lang.Object

java.io.Reader

java.io.FilterReader

com.dpsframework.util.CommandLineReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Readable

public class CommandLineReader
extends java.io.FilterReader

This is a quick hack to turn empty lines entered interactively on the command line into ';\n' empty lines for the interpreter. It's just more pleasant to be able to hit return on an empty line and see the prompt reappear.

Since:

2015, update at: 2018-07-15

Version:

1.7 (Build.1814)

Author:

Francisco J. Aguayo (Leon University / IEEE Power & Energy Systems Society Member)

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	lastCharNL
(package private) static int	normal
(package private) static int	sentSemi
(package private) int	state

Fields inherited from class java.io.FilterReader

in

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor and Description
CommandLineReader(java.io.Reader in)

Method Summary

Methods

Modifier and Type	Method and Description
int	read()
int	read(char[] buff, int off, int len) This is a degenerate implementation.

Methods inherited from class java.io.FilterReader

close, mark, markSupported, ready, reset, skip

Methods inherited from class java.io.Reader

read, read

Methods inherited from class java.lang.Object

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

Field Detail

normal

static final int normal

See Also:

Constant Field Values

lastCharNL

static final int lastCharNL

See Also:

Constant Field Values

sentSemi

static final int sentSemi

See Also:

Constant Field Values

state

int state

Constructor Detail

CommandLineReader

public CommandLineReader(java.io.Reader in)

Method Detail

read

public int read()
         throws java.io.IOException

Overrides:

read in class java.io.FilterReader

Throws:

java.io.IOException

read

public int read(char[] buff,
       int off,
       int len)
         throws java.io.IOException

This is a degenerate implementation. I don't know how to keep this from blocking if we try to read more than one char... There is no available() for Readers ??

Overrides:

read in class java.io.FilterReader

Throws:

java.io.IOException