Package edu.uiuc.ncsa.sas

Class StringIO

java.lang.Object

edu.uiuc.ncsa.sas.StringIO

All Implemented Interfaces:

IOInterface

public class StringIO
extends Object
implements IOInterface

An IO class backed by strings. This is used in e.g. web apps as a dummy where the actual control flow is managed by something else. Call flush() between calls to reset everything.

Created by Jeff Gaynor
on 8/15/22 at 2:14 PM

Constructor Summary

Constructors

Constructor	Description
StringIO(String input)

Method Summary

Modifier and Type	Method	Description
void	clearQueue()	Some implementations will have a queue e.g.
void	flush()	Flush anything waiting to be printed.
String	getInput()
StringBuilder	getOutput()
boolean	isBufferingOn()	return current state of buffering.
boolean	isQueueEmpty()	Check if the queue is empty.
void	print(Object x)	Print the string representation of an object, without a carriage return.
void	println(Object x)	Print the string representation of an object with a carriage return.
String	readline()	Read a line of input with no prompt.
String	readline(String prompt)	read a line of input, printing the prompt (on the left) first.
void	setBufferingOn(boolean bufferOn)	If this object supports buffering of commands, this will toggle it.
void	setInput(String input)
void	setOutput(StringBuilder output)

Methods inherited from class java.lang.Object

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

Constructor Detail

StringIO

public StringIO(String input)

Method Detail

getInput

public String getInput()

setInput

public void setInput(String input)

getOutput

public StringBuilder getOutput()

setOutput

public void setOutput(StringBuilder output)

readline

public String readline(String prompt)
                throws IOException

Description copied from interface: IOInterface

read a line of input, printing the prompt (on the left) first. The prompt is not returned.

Specified by:

readline in interface IOInterface

Returns:

Throws:

IOException

readline

public String readline()
                throws IOException

Description copied from interface: IOInterface

Read a line of input with no prompt.

Specified by:

readline in interface IOInterface

Returns:

Throws:

IOException

print

public void print(Object x)

Description copied from interface: IOInterface

Print the string representation of an object, without a carriage return.

Specified by:

print in interface IOInterface

println

public void println(Object x)

Description copied from interface: IOInterface

Print the string representation of an object with a carriage return.

Specified by:

println in interface IOInterface

flush

public void flush()

Description copied from interface: IOInterface

Flush anything waiting to be printed. Normally this is done with the print methods.

Specified by:

flush in interface IOInterface

clearQueue

public void clearQueue()

Description copied from interface: IOInterface

Some implementations will have a queue e.g. if the user paste text from the clipboard). The IOInterface.readline(String) methods will queue these up and return them in sequence -- this is done silently. If for some reason you need only a single line and want to discard anything else, invoke this.

Specified by:

clearQueue in interface IOInterface

isQueueEmpty

public boolean isQueueEmpty()

Description copied from interface: IOInterface

Check if the queue is empty.

Specified by:

isQueueEmpty in interface IOInterface

Returns:

setBufferingOn

public void setBufferingOn(boolean bufferOn)

Description copied from interface: IOInterface

If this object supports buffering of commands, this will toggle it. Buffering means that every result of IOInterface.readline(String) will be stored and up down arrows will cycle through them.

Specified by:

setBufferingOn in interface IOInterface

isBufferingOn

public boolean isBufferingOn()

Description copied from interface: IOInterface

return current state of buffering.

Specified by:

isBufferingOn in interface IOInterface

Returns: