Package org.jline.reader.impl

Class BufferImpl

java.lang.Object

org.jline.reader.impl.BufferImpl

All Implemented Interfaces:

Buffer

public class BufferImpl
extends Object
implements Buffer

A holder for a StringBuilder that also contains the current cursor position.

Since:

2.0

Author:

Marc Prud'hommeaux, Jason Dillon

Constructor Summary

Constructors

Constructor	Description
BufferImpl()
BufferImpl(int size)

Method Summary

Modifier and Type	Method	Description
int	atChar(int i)
boolean	backspace()	Issue a backspace.
int	backspace(int num)	Issue num backspaces.
boolean	clear()
BufferImpl	copy()
void	copyFrom(Buffer buf)
int	currChar()
boolean	currChar(int ch)
int	cursor()
boolean	cursor(int position)	Move the cursor position to the specified absolute index.
boolean	delete()
int	delete(int num)
boolean	down()
int	length()
int	move(int num)	Move the cursor where characters.
boolean	moveXY(int dx, int dy)
int	nextChar()
int	prevChar()
String	substring(int start)
String	substring(int start, int end)
String	toString()
boolean	up()
String	upToCursor()
void	write(int c)	Write the specific character into the buffer, setting the cursor position ahead one.
void	write(int c, boolean overTyping)	Write the specific character into the buffer, setting the cursor position ahead one.
void	write(CharSequence str)	Insert the specified chars into the buffer, setting the cursor to the end of the insertion point.
void	write(CharSequence str, boolean overTyping)
void	zeroOut()	Clear any internal buffer.

Methods inherited from class java.lang.Object

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

Constructor Details

BufferImpl

public BufferImpl()

BufferImpl

public BufferImpl(int size)

Method Details

copy

public BufferImpl copy()

Specified by:

copy in interface Buffer

cursor

public int cursor()

Specified by:

cursor in interface Buffer

length

public int length()

Specified by:

length in interface Buffer

currChar

public boolean currChar(int ch)

Specified by:

currChar in interface Buffer

currChar

public int currChar()

Specified by:

currChar in interface Buffer

prevChar

public int prevChar()

Specified by:

prevChar in interface Buffer

nextChar

public int nextChar()

Specified by:

nextChar in interface Buffer

atChar

public int atChar(int i)

Specified by:

atChar in interface Buffer

write

public void write(int c)

Write the specific character into the buffer, setting the cursor position ahead one.

Specified by:

write in interface Buffer

Parameters:

c - the character to insert

write

public void write(int c,
 boolean overTyping)

Write the specific character into the buffer, setting the cursor position ahead one. The text may overwrite or insert based on the current setting of overTyping.

Specified by:

write in interface Buffer

Parameters:

c - the character to insert

write

public void write(CharSequence str)

Insert the specified chars into the buffer, setting the cursor to the end of the insertion point.

Specified by:

write in interface Buffer

write

public void write(CharSequence str,
 boolean overTyping)

Specified by:

write in interface Buffer

clear

public boolean clear()

Specified by:

clear in interface Buffer

substring

public String substring(int start)

Specified by:

substring in interface Buffer

substring

public String substring(int start,
 int end)

Specified by:

substring in interface Buffer

upToCursor

public String upToCursor()

Specified by:

upToCursor in interface Buffer

cursor

public boolean cursor(int position)

Move the cursor position to the specified absolute index.

Specified by:

cursor in interface Buffer

move

public int move(int num)

Move the cursor where characters.

Specified by:

move in interface Buffer

Parameters:

num - If less than 0, move abs(where) to the left, otherwise move where to the right.

Returns:

The number of spaces we moved

up

public boolean up()

Specified by:

up in interface Buffer

down

public boolean down()

Specified by:

down in interface Buffer

moveXY

public boolean moveXY(int dx,
 int dy)

Specified by:

moveXY in interface Buffer

backspace

public int backspace(int num)

Issue num backspaces.

Specified by:

backspace in interface Buffer

Returns:

the number of characters backed up

backspace

public boolean backspace()

Issue a backspace.

Specified by:

backspace in interface Buffer

Returns:

true if successful

delete

public int delete(int num)

Specified by:

delete in interface Buffer

delete

public boolean delete()

Specified by:

delete in interface Buffer

toString

public String toString()

Specified by:

toString in interface Buffer

Overrides:

toString in class Object

copyFrom

public void copyFrom(Buffer buf)

Specified by:

copyFrom in interface Buffer

zeroOut

public void zeroOut()

Description copied from interface: Buffer

Clear any internal buffer.

Specified by:

zeroOut in interface Buffer