jline
Class UnixTerminal

java.lang.Object
  jline.Terminal
      jline.UnixTerminal

All Implemented Interfaces:

ConsoleOperations

public class UnixTerminal
extends Terminal

Terminal that is used for unix platforms. Terminal initialization is handled by issuing the stty command against the /dev/tty file to disable character echoing and enable character input. All known unix systems (including Linux and Macintosh OS X) support the stty), so this implementation should work for an reasonable POSIX system.

Field Summary

static short	ARROW_DOWN
static short	ARROW_LEFT
static short	ARROW_PREFIX
static short	ARROW_RIGHT
static short	ARROW_START
static short	ARROW_UP

Fields inherited from interface jline.ConsoleOperations

ADD, BACKSPACE, CHANGE_CASE, CHANGE_META, CLEAR_SCREEN, COMPLETE, CR, CTRL_B, CTRL_F, CTRL_N, CTRL_P, DELETE_META, DELETE_NEXT_CHAR, DELETE_PREV_CHAR, DELETE_PREV_WORD, END_WORD, EXIT, INSERT, KEYBOARD_BELL, KILL_LINE, KILL_LINE_PREV, MOVE_TO_BEG, MOVE_TO_END, NEWLINE, NEXT_CHAR, NEXT_HISTORY, NEXT_SPACE_WORD, NEXT_WORD, PASTE, PASTE_NEXT, PASTE_PREV, PREV_CHAR, PREV_HISTORY, PREV_SPACE_WORD, PREV_WORD, REDISPLAY, REPEAT_NEXT_CHAR, REPEAT_PREV_CHAR, REPEAT_SEARCH_NEXT, REPEAT_SEARCH_PREV, REPLACE_CHAR, REPLACE_MODE, RESET_LINE, SEARCH_NEXT, SEARCH_PREV, SUBSTITUTE_CHAR, SUBSTITUTE_LINE, TO_END_WORD, TO_NEXT_CHAR, TO_PREV_CHAR, UNDO, UNKNOWN

Constructor Summary

UnixTerminal()

Method Summary

boolean	getEcho() Returns true if the terminal will echo all characters type.
int	getTerminalHeight() Returns the value of "stty size" height param.
int	getTerminalWidth() Returns the value of "stty size" width param.
void	initializeTerminal() Remove line-buffered input by invoking "stty -icanon min 1" against the current terminal.
boolean	isSupported() Returns true if this terminal is capable of initializing the terminal to use jline.
int	readVirtualKey(InputStream in) Reads a virtual key from the console.

Methods inherited from class jline.Terminal

afterReadLine, beforeReadLine, getTerminal, isANSISupported, readCharacter, setupTerminal

Methods inherited from class java.lang.Object

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

Field Detail

ARROW_START

public static final short ARROW_START

See Also:

Constant Field Values

ARROW_PREFIX

public static final short ARROW_PREFIX

See Also:

Constant Field Values

ARROW_LEFT

public static final short ARROW_LEFT

See Also:

Constant Field Values

ARROW_RIGHT

public static final short ARROW_RIGHT

See Also:

Constant Field Values

ARROW_UP

public static final short ARROW_UP

See Also:

Constant Field Values

ARROW_DOWN

public static final short ARROW_DOWN

See Also:

Constant Field Values

Constructor Detail

UnixTerminal

public UnixTerminal()

Method Detail

initializeTerminal

public void initializeTerminal()
                        throws IOException,
                               InterruptedException

Remove line-buffered input by invoking "stty -icanon min 1" against the current terminal.

Specified by:

initializeTerminal in class Terminal

Throws:

IOException

InterruptedException

readVirtualKey

public int readVirtualKey(InputStream in)
                   throws IOException

Description copied from class: Terminal

Reads a virtual key from the console. Typically, this will just be the raw character that was entered, but in some cases, multiple input keys will need to be translated into a single virtual key.

Overrides:

readVirtualKey in class Terminal

Parameters:

in - the InputStream to read from

Returns:

the virtual key (e.g., ConsoleOperations#VK_UP)

Throws:

IOException

isSupported

public boolean isSupported()

Description copied from class: Terminal

Returns true if this terminal is capable of initializing the terminal to use jline.

Specified by:

isSupported in class Terminal

getEcho

public boolean getEcho()

Description copied from class: Terminal

Returns true if the terminal will echo all characters type.

Specified by:

getEcho in class Terminal

getTerminalWidth

public int getTerminalWidth()

Returns the value of "stty size" width param. Note: this method caches the value from the first time it is called in order to increase speed, which means that changing to size of the terminal will not be reflected in the console.

Specified by:

getTerminalWidth in class Terminal

getTerminalHeight

public int getTerminalHeight()

Returns the value of "stty size" height param. Note: this method caches the value from the first time it is called in order to increase speed, which means that changing to size of the terminal will not be reflected in the console.

Specified by:

getTerminalHeight in class Terminal