2 * Jexer - Java Text User Interface
4 * License: LGPLv3 or later
6 * This module is licensed under the GNU Lesser General Public License
7 * Version 3. Please see the file "COPYING" in this directory for more
8 * information about the GNU Lesser General Public License Version 3.
10 * Copyright (C) 2015 Kevin Lamonte
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public License
14 * as published by the Free Software Foundation; either version 3 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with this program; if not, see
24 * http://www.gnu.org/licenses/, or write to the Free Software
25 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
28 * @author Kevin Lamonte [kevin.lamonte@gmail.com]
31 package jexer
.tterminal
;
33 import java
.io
.InputStream
;
34 import java
.io
.InputStreamReader
;
35 import java
.io
.IOException
;
36 import java
.io
.OutputStream
;
37 import java
.io
.OutputStreamWriter
;
38 import java
.io
.Reader
;
39 import java
.io
.UnsupportedEncodingException
;
40 import java
.io
.Writer
;
41 import java
.util
.ArrayList
;
42 import java
.util
.Collections
;
43 import java
.util
.LinkedList
;
44 import java
.util
.List
;
46 import jexer
.TKeypress
;
47 import jexer
.event
.TMouseEvent
;
48 import jexer
.bits
.Color
;
49 import jexer
.bits
.Cell
;
50 import jexer
.bits
.CellAttributes
;
51 import static jexer
.TKeypress
.*;
54 * This implements a complex ANSI ECMA-48/ISO 6429/ANSI X3.64 type consoles,
55 * including a scrollback buffer.
58 * It currently implements VT100, VT102, VT220, and XTERM with the following
62 * - The vttest scenario for VT220 8-bit controls (11.1.2.3) reports a
63 * failure with XTERM. This is due to vttest failing to decode the UTF-8
67 * - Smooth scrolling, printing, keyboard locking, keyboard leds, and tests
68 * from VT100 are not supported.
71 * - User-defined keys (DECUDK), downloadable fonts (DECDLD), and VT100/ANSI
72 * compatibility mode (DECSCL) from VT220 are not supported. (Also,
73 * because DECSCL is not supported, it will fail the last part of the
74 * vttest "Test of VT52 mode" if DeviceType is set to VT220.)
77 * - Numeric/application keys from the number pad are not supported because
78 * they are not exposed from the TKeypress API.
81 * - VT52 HOLD SCREEN mode is not supported.
84 * - In VT52 graphics mode, the 3/, 5/, and 7/ characters (fraction
85 * numerators) are not rendered correctly.
88 * - All data meant for the 'printer' (CSI Pc ? i) is discarded.
90 public class ECMA48
implements Runnable
{
93 * The emulator can emulate several kinds of terminals.
95 public enum DeviceType
{
97 * DEC VT100 but also including the three VT102 functions.
118 * Return the proper primary Device Attributes string.
120 * @return string to send to remote side that is appropriate for the
123 private String
deviceTypeResponse() {
126 // "I am a VT100 with advanced video option" (often VT102)
134 // "I am a VT220" - 7 bit version
136 return "\033[?62;1;6c";
138 // "I am a VT220" - 8 bit version
139 return "\u009b?62;1;6c";
141 // "I am a VT100 with advanced video option" (often VT102)
144 throw new IllegalArgumentException("Invalid device type: " + type
);
149 * Return the proper TERM environment variable for this device type.
151 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
152 * @return "vt100", "xterm", etc.
154 public static String
deviceTypeTerm(final DeviceType deviceType
) {
155 switch (deviceType
) {
169 throw new IllegalArgumentException("Invalid device type: "
175 * Return the proper LANG for this device type. Only XTERM devices know
176 * about UTF-8, the others are defined by their standard to be either
177 * 7-bit or 8-bit characters only.
179 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
180 * @param baseLang a base language without UTF-8 flag such as "C" or
182 * @return "en_US", "en_US.UTF-8", etc.
184 public static String
deviceTypeLang(final DeviceType deviceType
,
185 final String baseLang
) {
187 switch (deviceType
) {
195 return baseLang
+ ".UTF-8";
198 throw new IllegalArgumentException("Invalid device type: "
204 * Write a string directly to the remote side.
206 * @param str string to send
208 private void writeRemote(final String str
) {
209 if (stopReaderThread
) {
210 // Reader hit EOF, bail out now.
215 // System.err.printf("writeRemote() '%s'\n", str);
221 if (outputStream
== null) {
225 for (int i
= 0; i
< str
.length(); i
++) {
226 outputStream
.write(str
.charAt(i
));
228 outputStream
.flush();
229 } catch (IOException e
) {
235 if (output
== null) {
241 } catch (IOException e
) {
247 throw new IllegalArgumentException("Invalid device type: " + type
);
252 * Close the input and output streams and stop the reader thread. Note
253 * that it is safe to call this multiple times.
255 public final void close() {
257 // Synchronize so we don't stomp on the reader thread.
258 synchronized (this) {
260 // Close the input stream
265 if (inputStream
!= null) {
268 } catch (IOException e
) {
278 } catch (IOException e
) {
287 // Tell the reader thread to stop looking at input.
288 if (stopReaderThread
== false) {
289 stopReaderThread
= true;
292 } catch (InterruptedException e
) {
297 // Close the output stream.
302 if (outputStream
!= null) {
304 outputStream
.close();
305 } catch (IOException e
) {
312 if (output
!= null) {
315 } catch (IOException e
) {
322 throw new IllegalArgumentException("Invalid device type: "
325 } // synchronized (this)
329 * When true, the reader thread is expected to exit.
331 private volatile boolean stopReaderThread
= false;
336 private Thread readerThread
= null;
339 * See if the reader thread is still running.
341 * @return if true, we are still connected to / reading from the remote
344 public final boolean isReading() {
345 return (!stopReaderThread
);
349 * The type of emulator to be.
351 private DeviceType type
= DeviceType
.VT102
;
354 * Obtain a new blank display line for an external user
355 * (e.g. TTerminalWindow).
357 * @return new blank line
359 public final DisplayLine
getBlankDisplayLine() {
360 return new DisplayLine(currentState
.attr
);
364 * The scrollback buffer characters + attributes.
366 private volatile List
<DisplayLine
> scrollback
;
369 * Get the scrollback buffer.
371 * @return the scrollback buffer
373 public final List
<DisplayLine
> getScrollbackBuffer() {
378 * The raw display buffer characters + attributes.
380 private volatile List
<DisplayLine
> display
;
383 * Get the display buffer.
385 * @return the display buffer
387 public final List
<DisplayLine
> getDisplayBuffer() {
392 * The terminal's input. For type == XTERM, this is an InputStreamReader
393 * with UTF-8 encoding.
395 private Reader input
;
398 * The terminal's raw InputStream. This is used for type != XTERM.
400 private volatile InputStream inputStream
;
403 * The terminal's output. For type == XTERM, this wraps an
404 * OutputStreamWriter with UTF-8 encoding.
406 private Writer output
;
409 * The terminal's raw OutputStream. This is used for type != XTERM.
411 private OutputStream outputStream
;
414 * Parser character scan states.
431 VT52_DIRECT_CURSOR_ADDRESS
435 * Current scanning state.
437 private ScanState scanState
;
440 * The selected number pad mode (DECKPAM, DECKPNM). We record this, but
441 * can't really use it in keypress() because we do not see number pad
442 * events from TKeypress.
444 private enum KeypadMode
{
450 * Arrow keys can emit three different sequences (DECCKM or VT52
453 private enum ArrowKeyMode
{
460 * Available character sets for GL, GR, G0, G1, G2, G3.
462 private enum CharacterSet
{
483 * Single-shift states used by the C1 control characters SS2 (0x8E) and
486 private enum Singleshift
{
493 * VT220+ lockshift states.
495 private enum LockshiftMode
{
505 * XTERM mouse reporting protocols.
507 private enum MouseProtocol
{
516 * Which mouse protocol is active.
518 private MouseProtocol mouseProtocol
= MouseProtocol
.OFF
;
521 * XTERM mouse reporting encodings.
523 private enum MouseEncoding
{
530 * Which mouse encoding is active.
532 private MouseEncoding mouseEncoding
= MouseEncoding
.X10
;
535 * Physical display width. We start at 80x24, but the user can resize us
541 * Get the display width.
543 * @return the width (usually 80 or 132)
545 public final int getWidth() {
550 * Physical display height. We start at 80x24, but the user can resize
556 * Get the display height.
558 * @return the height (usually 24)
560 public final int getHeight() {
565 * Top margin of the scrolling region.
567 private int scrollRegionTop
;
570 * Bottom margin of the scrolling region.
572 private int scrollRegionBottom
;
575 * Right margin column number. This can be selected by the remote side
576 * to be 80/132 (rightMargin values 79/131), or it can be (width - 1).
578 private int rightMargin
;
581 * Last character printed.
586 * VT100-style line wrapping: a character is placed in column 80 (or
587 * 132), but the line does NOT wrap until another character is written to
588 * column 1 of the next line, after which the cursor moves to column 2.
590 private boolean wrapLineFlag
;
593 * VT220 single shift flag.
595 private Singleshift singleshift
= Singleshift
.NONE
;
598 * true = insert characters, false = overwrite.
600 private boolean insertMode
= false;
603 * VT52 mode as selected by DECANM. True means VT52, false means
604 * ANSI. Default is ANSI.
606 private boolean vt52Mode
= false;
609 * Visible cursor (DECTCEM).
611 private boolean cursorVisible
= true;
614 * Get visible cursor flag.
616 * @return if true, the cursor is visible
618 public final boolean isCursorVisible() {
619 return cursorVisible
;
623 * Screen title as set by the xterm OSC sequence. Lots of applications
624 * send a screenTitle regardless of whether it is an xterm client or not.
626 private String screenTitle
= "";
629 * Get the screen title as set by the xterm OSC sequence. Lots of
630 * applications send a screenTitle regardless of whether it is an xterm
633 * @return screen title
635 public final String
getScreenTitle() {
640 * Parameter characters being collected.
642 private List
<Integer
> csiParams
;
645 * Non-csi collect buffer.
647 private StringBuilder collectBuffer
;
650 * When true, use the G1 character set.
652 private boolean shiftOut
= false;
655 * Horizontal tab stop locations.
657 private List
<Integer
> tabStops
;
660 * S8C1T. True means 8bit controls, false means 7bit controls.
662 private boolean s8c1t
= false;
665 * Printer mode. True means send all output to printer, which discards
668 private boolean printerControllerMode
= false;
671 * LMN line mode. If true, linefeed() puts the cursor on the first
672 * column of the next line. If false, linefeed() puts the cursor one
673 * line down on the current line. The default is false.
675 private boolean newLineMode
= false;
678 * Whether arrow keys send ANSI, VT100, or VT52 sequences.
680 private ArrowKeyMode arrowKeyMode
;
683 * Whether number pad keys send VT100 or VT52, application or numeric
686 private KeypadMode keypadMode
;
689 * When true, the terminal is in 132-column mode (DECCOLM).
691 private boolean columns132
= false;
694 * Get 132 columns value.
696 * @return if true, the terminal is in 132 column mode
698 public final boolean isColumns132() {
703 * true = reverse video. Set by DECSCNM.
705 private boolean reverseVideo
= false;
708 * false = echo characters locally.
710 private boolean fullDuplex
= true;
713 * DECSC/DECRC save/restore a subset of the total state. This class
714 * encapsulates those specific flags/modes.
716 private class SaveableState
{
719 * When true, cursor positions are relative to the scrolling region.
721 public boolean originMode
= false;
724 * The current editing X position.
726 public int cursorX
= 0;
729 * The current editing Y position.
731 public int cursorY
= 0;
734 * Which character set is currently selected in G0.
736 public CharacterSet g0Charset
= CharacterSet
.US
;
739 * Which character set is currently selected in G1.
741 public CharacterSet g1Charset
= CharacterSet
.DRAWING
;
744 * Which character set is currently selected in G2.
746 public CharacterSet g2Charset
= CharacterSet
.US
;
749 * Which character set is currently selected in G3.
751 public CharacterSet g3Charset
= CharacterSet
.US
;
754 * Which character set is currently selected in GR.
756 public CharacterSet grCharset
= CharacterSet
.DRAWING
;
759 * The current drawing attributes.
761 public CellAttributes attr
;
766 public LockshiftMode glLockshift
= LockshiftMode
.NONE
;
771 public LockshiftMode grLockshift
= LockshiftMode
.NONE
;
776 public boolean lineWrap
= true;
781 public void reset() {
785 g0Charset
= CharacterSet
.US
;
786 g1Charset
= CharacterSet
.DRAWING
;
787 g2Charset
= CharacterSet
.US
;
788 g3Charset
= CharacterSet
.US
;
789 grCharset
= CharacterSet
.DRAWING
;
790 attr
= new CellAttributes();
791 glLockshift
= LockshiftMode
.NONE
;
792 grLockshift
= LockshiftMode
.NONE
;
797 * Copy attributes from another instance.
799 * @param that the other instance to match
801 public void setTo(final SaveableState that
) {
802 this.originMode
= that
.originMode
;
803 this.cursorX
= that
.cursorX
;
804 this.cursorY
= that
.cursorY
;
805 this.g0Charset
= that
.g0Charset
;
806 this.g1Charset
= that
.g1Charset
;
807 this.g2Charset
= that
.g2Charset
;
808 this.g3Charset
= that
.g3Charset
;
809 this.grCharset
= that
.grCharset
;
810 this.attr
= new CellAttributes();
811 this.attr
.setTo(that
.attr
);
812 this.glLockshift
= that
.glLockshift
;
813 this.grLockshift
= that
.grLockshift
;
814 this.lineWrap
= that
.lineWrap
;
818 * Public constructor.
820 public SaveableState() {
826 * The current terminal state.
828 private SaveableState currentState
;
831 * The last saved terminal state.
833 private SaveableState savedState
;
836 * Clear the CSI parameters and flags.
838 private void toGround() {
840 collectBuffer
= new StringBuilder(8);
841 scanState
= ScanState
.GROUND
;
845 * Reset the tab stops list.
847 private void resetTabStops() {
849 for (int i
= 0; (i
* 8) <= rightMargin
; i
++) {
850 tabStops
.add(new Integer(i
* 8));
855 * Reset the emulation state.
857 private void reset() {
859 currentState
= new SaveableState();
860 savedState
= new SaveableState();
861 scanState
= ScanState
.GROUND
;
865 scrollRegionBottom
= height
- 1;
866 rightMargin
= width
- 1;
868 arrowKeyMode
= ArrowKeyMode
.ANSI
;
869 keypadMode
= KeypadMode
.Numeric
;
870 wrapLineFlag
= false;
878 reverseVideo
= false;
880 cursorVisible
= true;
883 singleshift
= Singleshift
.NONE
;
885 printerControllerMode
= false;
888 mouseProtocol
= MouseProtocol
.OFF
;
889 mouseEncoding
= MouseEncoding
.X10
;
899 * Public constructor.
901 * @param type one of the DeviceType constants to select VT100, VT102,
903 * @param inputStream an InputStream connected to the remote side. For
904 * type == XTERM, inputStream is converted to a Reader with UTF-8
906 * @param outputStream an OutputStream connected to the remote user. For
907 * type == XTERM, outputStream is converted to a Writer with UTF-8
909 * @throws UnsupportedEncodingException if an exception is thrown when
910 * creating the InputStreamReader
912 public ECMA48(final DeviceType type
, final InputStream inputStream
,
913 final OutputStream outputStream
) throws UnsupportedEncodingException
{
915 assert (inputStream
!= null);
916 assert (outputStream
!= null);
918 csiParams
= new ArrayList
<Integer
>();
919 tabStops
= new ArrayList
<Integer
>();
920 scrollback
= new LinkedList
<DisplayLine
>();
921 display
= new LinkedList
<DisplayLine
>();
924 this.inputStream
= inputStream
;
925 if (type
== DeviceType
.XTERM
) {
926 this.input
= new InputStreamReader(inputStream
, "UTF-8");
927 this.output
= new OutputStreamWriter(outputStream
, "UTF-8");
928 this.outputStream
= null;
931 this.outputStream
= outputStream
;
935 for (int i
= 0; i
< height
; i
++) {
936 display
.add(new DisplayLine(currentState
.attr
));
939 // Spin up the input reader
940 readerThread
= new Thread(this);
941 readerThread
.start();
945 * Append a new line to the bottom of the display, adding lines off the
946 * top to the scrollback buffer.
948 private void newDisplayLine() {
949 // Scroll the top line off into the scrollback buffer
950 scrollback
.add(display
.get(0));
952 DisplayLine line
= new DisplayLine(currentState
.attr
);
953 line
.setReverseColor(reverseVideo
);
958 * Wraps the current line.
960 private void wrapCurrentLine() {
961 if (currentState
.cursorY
== height
- 1) {
964 if (currentState
.cursorY
< height
- 1) {
965 currentState
.cursorY
++;
967 currentState
.cursorX
= 0;
971 * Handle a carriage return.
973 private void carriageReturn() {
974 currentState
.cursorX
= 0;
975 wrapLineFlag
= false;
979 * Reverse the color of the visible display.
981 private void invertDisplayColors() {
982 for (DisplayLine line
: display
) {
983 line
.setReverseColor(!line
.isReverseColor());
990 private void linefeed() {
992 if (currentState
.cursorY
< scrollRegionBottom
) {
993 // Increment screen y
994 currentState
.cursorY
++;
997 // Screen y does not increment
1000 * Two cases: either we're inside a scrolling region or not. If
1001 * the scrolling region bottom is the bottom of the screen, then
1002 * push the top line into the buffer. Else scroll the scrolling
1005 if ((scrollRegionBottom
== height
- 1) && (scrollRegionTop
== 0)) {
1007 // We're at the bottom of the scroll region, AND the scroll
1008 // region is the entire screen.
1014 // We're at the bottom of the scroll region, AND the scroll
1015 // region is NOT the entire screen.
1016 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
1021 currentState
.cursorX
= 0;
1023 wrapLineFlag
= false;
1027 * Prints one character to the display buffer.
1029 * @param ch character to display
1031 private void printCharacter(final char ch
) {
1032 int rightMargin
= this.rightMargin
;
1034 // Check if we have double-width, and if so chop at 40/66 instead of
1036 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
1037 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
1040 // Check the unusually-complicated line wrapping conditions...
1041 if (currentState
.cursorX
== rightMargin
) {
1043 if (currentState
.lineWrap
== true) {
1045 * This case happens when: the cursor was already on the
1046 * right margin (either through printing or by an explicit
1047 * placement command), and a character was printed.
1049 * The line wraps only when a new character arrives AND the
1050 * cursor is already on the right margin AND has placed a
1051 * character in its cell. Easier to see than to explain.
1053 if (wrapLineFlag
== false) {
1055 * This block marks the case that we are in the margin
1056 * and the first character has been received and printed.
1058 wrapLineFlag
= true;
1061 * This block marks the case that we are in the margin
1062 * and the second character has been received and
1065 wrapLineFlag
= false;
1069 } else if (currentState
.cursorX
<= rightMargin
) {
1071 * This is the normal case: a character came in and was printed
1072 * to the left of the right margin column.
1075 // Turn off VT100 special-case flag
1076 wrapLineFlag
= false;
1079 // "Print" the character
1080 Cell newCell
= new Cell(ch
);
1081 CellAttributes newCellAttributes
= (CellAttributes
) newCell
;
1082 newCellAttributes
.setTo(currentState
.attr
);
1083 DisplayLine line
= display
.get(currentState
.cursorY
);
1084 // Insert mode special case
1085 if (insertMode
== true) {
1086 line
.insert(currentState
.cursorX
, newCell
);
1088 // Replace an existing character
1089 line
.replace(currentState
.cursorX
, newCell
);
1092 // Increment horizontal
1093 if (wrapLineFlag
== false) {
1094 currentState
.cursorX
++;
1095 if (currentState
.cursorX
> rightMargin
) {
1096 currentState
.cursorX
--;
1102 * Translate the mouse event to a VT100, VT220, or XTERM sequence and
1103 * send to the remote side.
1105 * @param mouse mouse event received from the local user
1107 public void mouse(final TMouseEvent mouse
) {
1110 System.err.printf("mouse(): protocol %s encoding %s mouse %s\n",
1111 mouseProtocol, mouseEncoding, mouse);
1114 if (mouseEncoding
== MouseEncoding
.X10
) {
1115 // We will support X10 but only for (160,94) and smaller.
1116 if ((mouse
.getX() >= 160) || (mouse
.getY() >= 94)) {
1121 switch (mouseProtocol
) {
1128 // Only report button presses
1129 if (mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
) {
1135 // Only report button presses and releases
1136 if ((mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
)
1137 && (mouse
.getType() != TMouseEvent
.Type
.MOUSE_UP
)
1145 * Only report button presses, button releases, and motions that
1146 * have a button down (i.e. drag-and-drop).
1148 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1149 if (!mouse
.isMouse1()
1150 && !mouse
.isMouse2()
1151 && !mouse
.isMouse3()
1152 && !mouse
.isMouseWheelUp()
1153 && !mouse
.isMouseWheelDown()
1161 // Report everything
1165 // Now encode the event
1166 StringBuilder sb
= new StringBuilder(6);
1167 if (mouseEncoding
== MouseEncoding
.SGR
) {
1168 sb
.append((char) 0x1B);
1171 if (mouse
.isMouse1()) {
1172 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1177 } else if (mouse
.isMouse2()) {
1178 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1183 } else if (mouse
.isMouse3()) {
1184 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1189 } else if (mouse
.isMouseWheelUp()) {
1191 } else if (mouse
.isMouseWheelDown()) {
1194 // This is motion with no buttons down.
1198 sb
.append(String
.format("%d;%d", mouse
.getX() + 1,
1201 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1208 // X10 and UTF8 encodings
1209 sb
.append((char) 0x1B);
1212 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1213 sb
.append((char) (0x03 + 32));
1214 } else if (mouse
.isMouse1()) {
1215 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1216 sb
.append((char) (0x00 + 32 + 32));
1218 sb
.append((char) (0x00 + 32));
1220 } else if (mouse
.isMouse2()) {
1221 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1222 sb
.append((char) (0x01 + 32 + 32));
1224 sb
.append((char) (0x01 + 32));
1226 } else if (mouse
.isMouse3()) {
1227 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1228 sb
.append((char) (0x02 + 32 + 32));
1230 sb
.append((char) (0x02 + 32));
1232 } else if (mouse
.isMouseWheelUp()) {
1233 sb
.append((char) (0x04 + 64));
1234 } else if (mouse
.isMouseWheelDown()) {
1235 sb
.append((char) (0x05 + 64));
1237 // This is motion with no buttons down.
1238 sb
.append((char) (0x03 + 32));
1241 sb
.append((char) (mouse
.getX() + 33));
1242 sb
.append((char) (mouse
.getY() + 33));
1245 // System.err.printf("Would write: \'%s\'\n", sb.toString());
1246 writeRemote(sb
.toString());
1250 * Translate the keyboard press to a VT100, VT220, or XTERM sequence and
1251 * send to the remote side.
1253 * @param keypress keypress received from the local user
1255 public void keypress(final TKeypress keypress
) {
1256 writeRemote(keypressToString(keypress
));
1260 * Translate the keyboard press to a VT100, VT220, or XTERM sequence.
1262 * @param keypress keypress received from the local user
1263 * @return string to transmit to the remote side
1265 private String
keypressToString(final TKeypress keypress
) {
1267 if ((fullDuplex
== false) && (!keypress
.isFnKey())) {
1269 * If this is a control character, process it like it came from
1272 if (keypress
.getChar() < 0x20) {
1273 handleControlChar(keypress
.getChar());
1275 // Local echo for everything else
1276 printCharacter(keypress
.getChar());
1280 if ((newLineMode
== true) && (keypress
.equals(kbEnter
))) {
1285 // Handle control characters
1286 if ((keypress
.isCtrl()) && (!keypress
.isFnKey())) {
1287 StringBuilder sb
= new StringBuilder();
1288 char ch
= keypress
.getChar();
1291 return sb
.toString();
1294 // Handle alt characters
1295 if ((keypress
.isAlt()) && (!keypress
.isFnKey())) {
1296 StringBuilder sb
= new StringBuilder("\033");
1297 char ch
= keypress
.getChar();
1299 return sb
.toString();
1302 if (keypress
.equals(kbBackspace
)) {
1315 if (keypress
.equals(kbLeft
)) {
1316 switch (arrowKeyMode
) {
1326 if (keypress
.equals(kbRight
)) {
1327 switch (arrowKeyMode
) {
1337 if (keypress
.equals(kbUp
)) {
1338 switch (arrowKeyMode
) {
1348 if (keypress
.equals(kbDown
)) {
1349 switch (arrowKeyMode
) {
1359 if (keypress
.equals(kbHome
)) {
1360 switch (arrowKeyMode
) {
1370 if (keypress
.equals(kbEnd
)) {
1371 switch (arrowKeyMode
) {
1381 if (keypress
.equals(kbF1
)) {
1389 if (keypress
.equals(kbF2
)) {
1397 if (keypress
.equals(kbF3
)) {
1405 if (keypress
.equals(kbF4
)) {
1413 if (keypress
.equals(kbF5
)) {
1426 if (keypress
.equals(kbF6
)) {
1439 if (keypress
.equals(kbF7
)) {
1452 if (keypress
.equals(kbF8
)) {
1465 if (keypress
.equals(kbF9
)) {
1478 if (keypress
.equals(kbF10
)) {
1491 if (keypress
.equals(kbF11
)) {
1495 if (keypress
.equals(kbF12
)) {
1499 if (keypress
.equals(kbShiftF1
)) {
1507 if (keypress
.equals(kbShiftF2
)) {
1515 if (keypress
.equals(kbShiftF3
)) {
1523 if (keypress
.equals(kbShiftF4
)) {
1531 if (keypress
.equals(kbShiftF5
)) {
1533 return "\033[15;2~";
1536 if (keypress
.equals(kbShiftF6
)) {
1538 return "\033[17;2~";
1541 if (keypress
.equals(kbShiftF7
)) {
1543 return "\033[18;2~";
1546 if (keypress
.equals(kbShiftF8
)) {
1548 return "\033[19;2~";
1551 if (keypress
.equals(kbShiftF9
)) {
1553 return "\033[20;2~";
1556 if (keypress
.equals(kbShiftF10
)) {
1558 return "\033[21;2~";
1561 if (keypress
.equals(kbShiftF11
)) {
1563 return "\033[23;2~";
1566 if (keypress
.equals(kbShiftF12
)) {
1568 return "\033[24;2~";
1571 if (keypress
.equals(kbCtrlF1
)) {
1579 if (keypress
.equals(kbCtrlF2
)) {
1587 if (keypress
.equals(kbCtrlF3
)) {
1595 if (keypress
.equals(kbCtrlF4
)) {
1603 if (keypress
.equals(kbCtrlF5
)) {
1605 return "\033[15;5~";
1608 if (keypress
.equals(kbCtrlF6
)) {
1610 return "\033[17;5~";
1613 if (keypress
.equals(kbCtrlF7
)) {
1615 return "\033[18;5~";
1618 if (keypress
.equals(kbCtrlF8
)) {
1620 return "\033[19;5~";
1623 if (keypress
.equals(kbCtrlF9
)) {
1625 return "\033[20;5~";
1628 if (keypress
.equals(kbCtrlF10
)) {
1630 return "\033[21;5~";
1633 if (keypress
.equals(kbCtrlF11
)) {
1635 return "\033[23;5~";
1638 if (keypress
.equals(kbCtrlF12
)) {
1640 return "\033[24;5~";
1643 if (keypress
.equals(kbPgUp
)) {
1648 if (keypress
.equals(kbPgDn
)) {
1653 if (keypress
.equals(kbIns
)) {
1658 if (keypress
.equals(kbShiftIns
)) {
1659 // This is what xterm sends for SHIFT-INS
1661 // This is what xterm sends for CTRL-INS
1662 // return "\033[2;5~";
1665 if (keypress
.equals(kbShiftDel
)) {
1666 // This is what xterm sends for SHIFT-DEL
1668 // This is what xterm sends for CTRL-DEL
1669 // return "\033[3;5~";
1672 if (keypress
.equals(kbDel
)) {
1673 // Delete sends real delete for VTxxx
1675 // return "\033[3~";
1678 if (keypress
.equals(kbEnter
)) {
1682 if (keypress
.equals(kbEsc
)) {
1686 if (keypress
.equals(kbAltEsc
)) {
1690 if (keypress
.equals(kbTab
)) {
1694 // Non-alt, non-ctrl characters
1695 if (!keypress
.isFnKey()) {
1696 StringBuilder sb
= new StringBuilder();
1697 sb
.append(keypress
.getChar());
1698 return sb
.toString();
1704 * Map a symbol in any one of the VT100/VT220 character sets to a Unicode
1707 * @param ch 8-bit character from the remote side
1708 * @param charsetGl character set defined for GL
1709 * @param charsetGr character set defined for GR
1710 * @return character to display on the screen
1712 private char mapCharacterCharset(final char ch
,
1713 final CharacterSet charsetGl
,
1714 final CharacterSet charsetGr
) {
1716 int lookupChar
= ch
;
1717 CharacterSet lookupCharset
= charsetGl
;
1720 assert ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
));
1721 lookupCharset
= charsetGr
;
1725 switch (lookupCharset
) {
1728 return DECCharacterSets
.SPECIAL_GRAPHICS
[lookupChar
];
1731 return DECCharacterSets
.UK
[lookupChar
];
1734 return DECCharacterSets
.US_ASCII
[lookupChar
];
1737 return DECCharacterSets
.NL
[lookupChar
];
1740 return DECCharacterSets
.FI
[lookupChar
];
1743 return DECCharacterSets
.FR
[lookupChar
];
1746 return DECCharacterSets
.FR_CA
[lookupChar
];
1749 return DECCharacterSets
.DE
[lookupChar
];
1752 return DECCharacterSets
.IT
[lookupChar
];
1755 return DECCharacterSets
.NO
[lookupChar
];
1758 return DECCharacterSets
.ES
[lookupChar
];
1761 return DECCharacterSets
.SV
[lookupChar
];
1764 return DECCharacterSets
.SWISS
[lookupChar
];
1766 case DEC_SUPPLEMENTAL
:
1767 return DECCharacterSets
.DEC_SUPPLEMENTAL
[lookupChar
];
1770 return DECCharacterSets
.VT52_SPECIAL_GRAPHICS
[lookupChar
];
1773 return DECCharacterSets
.US_ASCII
[lookupChar
];
1776 return DECCharacterSets
.US_ASCII
[lookupChar
];
1779 throw new IllegalArgumentException("Invalid character set value: "
1785 * Map an 8-bit byte into a printable character.
1787 * @param ch either 8-bit or Unicode character from the remote side
1788 * @return character to display on the screen
1790 private char mapCharacter(final char ch
) {
1792 // Unicode character, just return it
1796 CharacterSet charsetGl
= currentState
.g0Charset
;
1797 CharacterSet charsetGr
= currentState
.grCharset
;
1799 if (vt52Mode
== true) {
1800 if (shiftOut
== true) {
1801 // Shifted out character, pull from VT52 graphics
1802 charsetGl
= currentState
.g1Charset
;
1803 charsetGr
= CharacterSet
.US
;
1806 charsetGl
= currentState
.g0Charset
;
1807 charsetGr
= CharacterSet
.US
;
1810 // Pull the character
1811 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
1815 if (shiftOut
== true) {
1816 // Shifted out character, pull from G1
1817 charsetGl
= currentState
.g1Charset
;
1818 charsetGr
= currentState
.grCharset
;
1820 // Pull the character
1821 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
1825 if (singleshift
== Singleshift
.SS2
) {
1827 singleshift
= Singleshift
.NONE
;
1829 // Shifted out character, pull from G2
1830 charsetGl
= currentState
.g2Charset
;
1831 charsetGr
= currentState
.grCharset
;
1835 if (singleshift
== Singleshift
.SS3
) {
1837 singleshift
= Singleshift
.NONE
;
1839 // Shifted out character, pull from G3
1840 charsetGl
= currentState
.g3Charset
;
1841 charsetGr
= currentState
.grCharset
;
1844 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
1845 // Check for locking shift
1847 switch (currentState
.glLockshift
) {
1860 charsetGl
= currentState
.g2Charset
;
1865 charsetGl
= currentState
.g3Charset
;
1870 charsetGl
= currentState
.g0Charset
;
1874 switch (currentState
.grLockshift
) {
1884 charsetGr
= currentState
.g1Charset
;
1889 charsetGr
= currentState
.g2Charset
;
1894 charsetGr
= currentState
.g3Charset
;
1899 charsetGr
= CharacterSet
.DEC_SUPPLEMENTAL
;
1906 // Pull the character
1907 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
1911 * Scroll the text within a scrolling region up n lines.
1913 * @param regionTop top row of the scrolling region
1914 * @param regionBottom bottom row of the scrolling region
1915 * @param n number of lines to scroll
1917 private void scrollingRegionScrollUp(final int regionTop
,
1918 final int regionBottom
, final int n
) {
1920 if (regionTop
>= regionBottom
) {
1924 // Sanity check: see if there will be any characters left after the
1926 if (regionBottom
+ 1 - regionTop
<= n
) {
1927 // There won't be anything left in the region, so just call
1928 // eraseScreen() and return.
1929 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
1933 int remaining
= regionBottom
+ 1 - regionTop
- n
;
1934 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
1935 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
1937 List
<DisplayLine
> displayMiddle
= display
.subList(regionBottom
+ 1
1938 - remaining
, regionBottom
+ 1);
1939 display
= new LinkedList
<DisplayLine
>(displayTop
);
1940 display
.addAll(displayMiddle
);
1941 for (int i
= 0; i
< n
; i
++) {
1942 DisplayLine line
= new DisplayLine(currentState
.attr
);
1943 line
.setReverseColor(reverseVideo
);
1946 display
.addAll(displayBottom
);
1948 assert (display
.size() == height
);
1952 * Scroll the text within a scrolling region down n lines.
1954 * @param regionTop top row of the scrolling region
1955 * @param regionBottom bottom row of the scrolling region
1956 * @param n number of lines to scroll
1958 private void scrollingRegionScrollDown(final int regionTop
,
1959 final int regionBottom
, final int n
) {
1961 if (regionTop
>= regionBottom
) {
1965 // Sanity check: see if there will be any characters left after the
1967 if (regionBottom
+ 1 - regionTop
<= n
) {
1968 // There won't be anything left in the region, so just call
1969 // eraseScreen() and return.
1970 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
1974 int remaining
= regionBottom
+ 1 - regionTop
- n
;
1975 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
1976 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
1978 List
<DisplayLine
> displayMiddle
= display
.subList(regionTop
,
1979 regionTop
+ remaining
);
1980 display
= new LinkedList
<DisplayLine
>(displayTop
);
1981 for (int i
= 0; i
< n
; i
++) {
1982 DisplayLine line
= new DisplayLine(currentState
.attr
);
1983 line
.setReverseColor(reverseVideo
);
1986 display
.addAll(displayMiddle
);
1987 display
.addAll(displayBottom
);
1989 assert (display
.size() == height
);
1993 * Process a control character.
1995 * @param ch 8-bit character from the remote side
1997 private void handleControlChar(final char ch
) {
1998 assert ((ch
<= 0x1F) || ((ch
>= 0x7F) && (ch
<= 0x9F)));
2009 // Transmit the answerback message.
2020 cursorLeft(1, false);
2025 advanceToNextTabStop();
2051 currentState
.glLockshift
= LockshiftMode
.NONE
;
2057 currentState
.glLockshift
= LockshiftMode
.NONE
;
2082 singleshift
= Singleshift
.SS2
;
2087 singleshift
= Singleshift
.SS3
;
2097 * Advance the cursor to the next tab stop.
2099 private void advanceToNextTabStop() {
2100 if (tabStops
.size() == 0) {
2101 // Go to the rightmost column
2102 cursorRight(rightMargin
- currentState
.cursorX
, false);
2105 for (Integer stop
: tabStops
) {
2106 if (stop
> currentState
.cursorX
) {
2107 cursorRight(stop
- currentState
.cursorX
, false);
2112 * We got here, meaning there isn't a tab stop beyond the current
2113 * cursor position. Place the cursor of the right-most edge of the
2116 cursorRight(rightMargin
- currentState
.cursorX
, false);
2120 * Save a character into the collect buffer.
2122 * @param ch character to save
2124 private void collect(final char ch
) {
2125 collectBuffer
.append(ch
);
2129 * Save a byte into the CSI parameters buffer.
2131 * @param ch byte to save
2133 private void param(final byte ch
) {
2134 if (csiParams
.size() == 0) {
2135 csiParams
.add(new Integer(0));
2137 Integer x
= csiParams
.get(csiParams
.size() - 1);
2138 if ((ch
>= '0') && (ch
<= '9')) {
2141 csiParams
.set(csiParams
.size() - 1, x
);
2145 csiParams
.add(new Integer(0));
2150 * Get a CSI parameter value, with a default.
2152 * @param position parameter index. 0 is the first parameter.
2153 * @param defaultValue value to use if csiParams[position] doesn't exist
2154 * @return parameter value
2156 private int getCsiParam(final int position
, final int defaultValue
) {
2157 if (csiParams
.size() < position
+ 1) {
2158 return defaultValue
;
2160 return csiParams
.get(position
).intValue();
2164 * Get a CSI parameter value, clamped to within min/max.
2166 * @param position parameter index. 0 is the first parameter.
2167 * @param defaultValue value to use if csiParams[position] doesn't exist
2168 * @param minValue minimum value inclusive
2169 * @param maxValue maximum value inclusive
2170 * @return parameter value
2172 private int getCsiParam(final int position
, final int defaultValue
,
2173 final int minValue
, final int maxValue
) {
2175 assert (minValue
<= maxValue
);
2176 int value
= getCsiParam(position
, defaultValue
);
2177 if (value
< minValue
) {
2180 if (value
> maxValue
) {
2187 * Set or unset a toggle. value is 'true' for set ('h'), false for reset
2190 private void setToggle(final boolean value
) {
2191 boolean decPrivateModeFlag
= false;
2192 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2193 if (collectBuffer
.charAt(i
) == '?') {
2194 decPrivateModeFlag
= true;
2199 for (Integer i
: csiParams
) {
2204 if (decPrivateModeFlag
== true) {
2206 if (value
== true) {
2207 // Use application arrow keys
2208 arrowKeyMode
= ArrowKeyMode
.VT100
;
2210 // Use ANSI arrow keys
2211 arrowKeyMode
= ArrowKeyMode
.ANSI
;
2216 if (decPrivateModeFlag
== true) {
2217 if (value
== false) {
2221 arrowKeyMode
= ArrowKeyMode
.VT52
;
2224 * From the VT102 docs: "You use ANSI mode to select
2225 * most terminal features; the terminal uses the same
2226 * features when it switches to VT52 mode. You
2227 * cannot, however, change most of these features in
2230 * In other words, do not reset any other attributes
2231 * when switching between VT52 submode and ANSI.
2233 * HOWEVER, the real vt100 does switch the character
2234 * set according to Usenet.
2236 currentState
.g0Charset
= CharacterSet
.US
;
2237 currentState
.g1Charset
= CharacterSet
.DRAWING
;
2240 if ((type
== DeviceType
.VT220
)
2241 || (type
== DeviceType
.XTERM
)) {
2243 // VT52 mode is explicitly 7-bit
2245 singleshift
= Singleshift
.NONE
;
2250 if (value
== true) {
2251 // Turn off keyboard
2260 if (decPrivateModeFlag
== true) {
2262 if (value
== true) {
2271 width
= rightMargin
+ 1;
2272 // Entire screen is cleared, and scrolling region is
2274 eraseScreen(0, 0, height
- 1, width
- 1, false);
2275 scrollRegionTop
= 0;
2276 scrollRegionBottom
= height
- 1;
2277 // Also home the cursor
2278 cursorPosition(0, 0);
2282 if (decPrivateModeFlag
== true) {
2284 if (value
== true) {
2293 if (value
== true) {
2301 if (decPrivateModeFlag
== true) {
2303 if (value
== true) {
2305 * Set selects reverse screen, a white screen
2306 * background with black characters.
2308 if (reverseVideo
!= true) {
2310 * If in normal video, switch it back
2312 invertDisplayColors();
2314 reverseVideo
= true;
2317 * Reset selects normal screen, a black screen
2318 * background with white characters.
2320 if (reverseVideo
== true) {
2322 * If in reverse video already, switch it back
2324 invertDisplayColors();
2326 reverseVideo
= false;
2331 if (decPrivateModeFlag
== true) {
2333 if (value
== true) {
2334 // Origin is relative to scroll region cursor.
2335 // Cursor can NEVER leave scrolling region.
2336 currentState
.originMode
= true;
2337 cursorPosition(0, 0);
2339 // Origin is absolute to entire screen. Cursor can
2340 // leave the scrolling region via cup() and hvp().
2341 currentState
.originMode
= false;
2342 cursorPosition(0, 0);
2347 if (decPrivateModeFlag
== true) {
2349 if (value
== true) {
2351 currentState
.lineWrap
= true;
2353 // Turn linewrap off
2354 currentState
.lineWrap
= false;
2359 if (decPrivateModeFlag
== true) {
2361 if (value
== true) {
2362 // Keyboard auto-repeat on
2365 // Keyboard auto-repeat off
2371 if (decPrivateModeFlag
== false) {
2373 if (value
== true) {
2383 if (decPrivateModeFlag
== true) {
2389 if (decPrivateModeFlag
== true) {
2395 if (decPrivateModeFlag
== false) {
2397 if (value
== true) {
2399 * Set causes a received linefeed, form feed, or
2400 * vertical tab to move cursor to first column of
2401 * next line. RETURN transmits both a carriage return
2402 * and linefeed. This selection is also called new
2408 * Reset causes a received linefeed, form feed, or
2409 * vertical tab to move cursor to next line in
2410 * current column. RETURN transmits a carriage
2413 newLineMode
= false;
2419 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2420 if (decPrivateModeFlag
== true) {
2422 if (value
== true) {
2424 cursorVisible
= true;
2427 cursorVisible
= false;
2434 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2435 if (decPrivateModeFlag
== true) {
2437 if (value
== true) {
2438 // Select national mode NRC
2441 // Select multi-national mode
2450 if ((type
== DeviceType
.XTERM
)
2451 && (decPrivateModeFlag
== true)
2453 // Mouse: normal tracking mode
2454 if (value
== true) {
2455 mouseProtocol
= MouseProtocol
.NORMAL
;
2457 mouseProtocol
= MouseProtocol
.OFF
;
2463 if ((type
== DeviceType
.XTERM
)
2464 && (decPrivateModeFlag
== true)
2466 // Mouse: normal tracking mode
2467 if (value
== true) {
2468 mouseProtocol
= MouseProtocol
.BUTTONEVENT
;
2470 mouseProtocol
= MouseProtocol
.OFF
;
2476 if ((type
== DeviceType
.XTERM
)
2477 && (decPrivateModeFlag
== true)
2479 // Mouse: Any-event tracking mode
2480 if (value
== true) {
2481 mouseProtocol
= MouseProtocol
.ANYEVENT
;
2483 mouseProtocol
= MouseProtocol
.OFF
;
2489 if ((type
== DeviceType
.XTERM
)
2490 && (decPrivateModeFlag
== true)
2492 // Mouse: UTF-8 coordinates
2493 if (value
== true) {
2494 mouseEncoding
= MouseEncoding
.UTF8
;
2496 mouseEncoding
= MouseEncoding
.X10
;
2502 if ((type
== DeviceType
.XTERM
)
2503 && (decPrivateModeFlag
== true)
2505 // Mouse: SGR coordinates
2506 if (value
== true) {
2507 mouseEncoding
= MouseEncoding
.SGR
;
2509 mouseEncoding
= MouseEncoding
.X10
;
2522 * DECSC - Save cursor.
2524 private void decsc() {
2525 savedState
.setTo(currentState
);
2529 * DECRC - Restore cursor.
2531 private void decrc() {
2532 currentState
.setTo(savedState
);
2538 private void ind() {
2539 // Move the cursor and scroll if necessary. If at the bottom line
2540 // already, a scroll up is supposed to be performed.
2541 if (currentState
.cursorY
== scrollRegionBottom
) {
2542 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
2544 cursorDown(1, true);
2548 * RI - Reverse index.
2551 // Move the cursor and scroll if necessary. If at the top line
2552 // already, a scroll down is supposed to be performed.
2553 if (currentState
.cursorY
== scrollRegionTop
) {
2554 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
, 1);
2562 private void nel() {
2563 // Move the cursor and scroll if necessary. If at the bottom line
2564 // already, a scroll up is supposed to be performed.
2565 if (currentState
.cursorY
== scrollRegionBottom
) {
2566 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
2568 cursorDown(1, true);
2570 // Reset to the beginning of the next line
2571 currentState
.cursorX
= 0;
2575 * DECKPAM - Keypad application mode.
2577 private void deckpam() {
2578 keypadMode
= KeypadMode
.Application
;
2582 * DECKPNM - Keypad numeric mode.
2584 private void deckpnm() {
2585 keypadMode
= KeypadMode
.Numeric
;
2591 * @param n number of spaces to move
2592 * @param honorScrollRegion if true, then do nothing if the cursor is
2593 * outside the scrolling region
2595 private void cursorUp(final int n
, final boolean honorScrollRegion
) {
2599 * Special case: if a user moves the cursor from the right margin, we
2600 * have to reset the VT100 right margin flag.
2603 wrapLineFlag
= false;
2606 for (int i
= 0; i
< n
; i
++) {
2607 if (honorScrollRegion
== true) {
2608 // Honor the scrolling region
2609 if ((currentState
.cursorY
< scrollRegionTop
)
2610 || (currentState
.cursorY
> scrollRegionBottom
)
2612 // Outside region, do nothing
2615 // Inside region, go up
2616 top
= scrollRegionTop
;
2618 // Non-scrolling case
2622 if (currentState
.cursorY
> top
) {
2623 currentState
.cursorY
--;
2629 * Move down n spaces.
2631 * @param n number of spaces to move
2632 * @param honorScrollRegion if true, then do nothing if the cursor is
2633 * outside the scrolling region
2635 private void cursorDown(final int n
, final boolean honorScrollRegion
) {
2639 * Special case: if a user moves the cursor from the right margin, we
2640 * have to reset the VT100 right margin flag.
2643 wrapLineFlag
= false;
2646 for (int i
= 0; i
< n
; i
++) {
2648 if (honorScrollRegion
== true) {
2649 // Honor the scrolling region
2650 if (currentState
.cursorY
> scrollRegionBottom
) {
2651 // Outside region, do nothing
2654 // Inside region, go down
2655 bottom
= scrollRegionBottom
;
2657 // Non-scrolling case
2658 bottom
= height
- 1;
2661 if (currentState
.cursorY
< bottom
) {
2662 currentState
.cursorY
++;
2668 * Move left n spaces.
2670 * @param n number of spaces to move
2671 * @param honorScrollRegion if true, then do nothing if the cursor is
2672 * outside the scrolling region
2674 private void cursorLeft(final int n
, final boolean honorScrollRegion
) {
2676 * Special case: if a user moves the cursor from the right margin, we
2677 * have to reset the VT100 right margin flag.
2680 wrapLineFlag
= false;
2683 for (int i
= 0; i
< n
; i
++) {
2684 if (honorScrollRegion
== true) {
2685 // Honor the scrolling region
2686 if ((currentState
.cursorY
< scrollRegionTop
)
2687 || (currentState
.cursorY
> scrollRegionBottom
)
2689 // Outside region, do nothing
2694 if (currentState
.cursorX
> 0) {
2695 currentState
.cursorX
--;
2701 * Move right n spaces.
2703 * @param n number of spaces to move
2704 * @param honorScrollRegion if true, then do nothing if the cursor is
2705 * outside the scrolling region
2707 private void cursorRight(final int n
, final boolean honorScrollRegion
) {
2708 int rightMargin
= this.rightMargin
;
2711 * Special case: if a user moves the cursor from the right margin, we
2712 * have to reset the VT100 right margin flag.
2715 wrapLineFlag
= false;
2718 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
2719 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
2722 for (int i
= 0; i
< n
; i
++) {
2723 if (honorScrollRegion
== true) {
2724 // Honor the scrolling region
2725 if ((currentState
.cursorY
< scrollRegionTop
)
2726 || (currentState
.cursorY
> scrollRegionBottom
)
2728 // Outside region, do nothing
2733 if (currentState
.cursorX
< rightMargin
) {
2734 currentState
.cursorX
++;
2740 * Move cursor to (col, row) where (0, 0) is the top-left corner.
2742 * @param row row to move to
2743 * @param col column to move to
2745 private void cursorPosition(int row
, final int col
) {
2746 int rightMargin
= this.rightMargin
;
2751 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
2752 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
2755 // Set column number
2756 currentState
.cursorX
= col
;
2758 // Sanity check, bring column back to margin.
2759 if (currentState
.cursorX
> rightMargin
) {
2760 currentState
.cursorX
= rightMargin
;
2764 if (currentState
.originMode
== true) {
2765 row
+= scrollRegionTop
;
2767 if (currentState
.cursorY
< row
) {
2768 cursorDown(row
- currentState
.cursorY
, false);
2769 } else if (currentState
.cursorY
> row
) {
2770 cursorUp(currentState
.cursorY
- row
, false);
2773 wrapLineFlag
= false;
2777 * HTS - Horizontal tabulation set.
2779 private void hts() {
2780 for (Integer stop
: tabStops
) {
2781 if (stop
== currentState
.cursorX
) {
2782 // Already have a tab stop here
2787 // Append a tab stop to the end of the array and resort them
2788 tabStops
.add(currentState
.cursorX
);
2789 Collections
.sort(tabStops
);
2793 * DECSWL - Single-width line.
2795 private void decswl() {
2796 display
.get(currentState
.cursorY
).setDoubleWidth(false);
2797 display
.get(currentState
.cursorY
).setDoubleHeight(0);
2801 * DECDWL - Double-width line.
2803 private void decdwl() {
2804 display
.get(currentState
.cursorY
).setDoubleWidth(true);
2805 display
.get(currentState
.cursorY
).setDoubleHeight(0);
2809 * DECHDL - Double-height + double-width line.
2811 * @param topHalf if true, this sets the row to be the top half row of a
2814 private void dechdl(final boolean topHalf
) {
2815 display
.get(currentState
.cursorY
).setDoubleWidth(true);
2816 if (topHalf
== true) {
2817 display
.get(currentState
.cursorY
).setDoubleHeight(1);
2819 display
.get(currentState
.cursorY
).setDoubleHeight(2);
2824 * DECALN - Screen alignment display.
2826 private void decaln() {
2827 Cell newCell
= new Cell();
2828 newCell
.setChar('E');
2829 for (DisplayLine line
: display
) {
2830 for (int i
= 0; i
< line
.length(); i
++) {
2831 line
.replace(i
, newCell
);
2837 * DECSCL - Compatibility level.
2839 private void decscl() {
2840 int i
= getCsiParam(0, 0);
2841 int j
= getCsiParam(1, 0);
2845 currentState
.g0Charset
= CharacterSet
.US
;
2846 currentState
.g1Charset
= CharacterSet
.DRAWING
;
2848 } else if (i
== 62) {
2850 if ((j
== 0) || (j
== 2)) {
2852 } else if (j
== 1) {
2859 * CUD - Cursor down.
2861 private void cud() {
2862 cursorDown(getCsiParam(0, 1, 1, height
), true);
2866 * CUF - Cursor forward.
2868 private void cuf() {
2869 cursorRight(getCsiParam(0, 1, 1, rightMargin
+ 1), true);
2873 * CUB - Cursor backward.
2875 private void cub() {
2876 cursorLeft(getCsiParam(0, 1, 1, currentState
.cursorX
+ 1), true);
2882 private void cuu() {
2883 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
2887 * CUP - Cursor position.
2889 private void cup() {
2890 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
2891 getCsiParam(1, 1, 1, rightMargin
+ 1) - 1);
2895 * CNL - Cursor down and to column 1.
2897 private void cnl() {
2898 cursorDown(getCsiParam(0, 1, 1, height
), true);
2900 cursorLeft(currentState
.cursorX
, true);
2904 * CPL - Cursor up and to column 1.
2906 private void cpl() {
2907 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
2909 cursorLeft(currentState
.cursorX
, true);
2913 * CHA - Cursor to column # in current row.
2915 private void cha() {
2916 cursorPosition(currentState
.cursorY
,
2917 getCsiParam(0, 1, 1, rightMargin
+ 1) - 1);
2921 * VPA - Cursor to row #, same column.
2923 private void vpa() {
2924 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
2925 currentState
.cursorX
);
2929 * ED - Erase in display.
2932 boolean honorProtected
= false;
2933 boolean decPrivateModeFlag
= false;
2935 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2936 if (collectBuffer
.charAt(i
) == '?') {
2937 decPrivateModeFlag
= true;
2942 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
2943 && (decPrivateModeFlag
== true)
2945 honorProtected
= true;
2948 int i
= getCsiParam(0, 0);
2951 // Erase from here to end of screen
2952 if (currentState
.cursorY
< height
- 1) {
2953 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1, width
- 1,
2956 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
2957 } else if (i
== 1) {
2958 // Erase from beginning of screen to here
2959 eraseScreen(0, 0, currentState
.cursorY
- 1, width
- 1,
2961 eraseLine(0, currentState
.cursorX
, honorProtected
);
2962 } else if (i
== 2) {
2963 // Erase entire screen
2964 eraseScreen(0, 0, height
- 1, width
- 1, honorProtected
);
2969 * EL - Erase in line.
2972 boolean honorProtected
= false;
2973 boolean decPrivateModeFlag
= false;
2975 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2976 if (collectBuffer
.charAt(i
) == '?') {
2977 decPrivateModeFlag
= true;
2982 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
2983 && (decPrivateModeFlag
== true)
2985 honorProtected
= true;
2988 int i
= getCsiParam(0, 0);
2991 // Erase from here to end of line
2992 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
2993 } else if (i
== 1) {
2994 // Erase from beginning of line to here
2995 eraseLine(0, currentState
.cursorX
, honorProtected
);
2996 } else if (i
== 2) {
2997 // Erase entire line
2998 eraseLine(0, width
- 1, honorProtected
);
3003 * ECH - Erase # of characters in current row.
3005 private void ech() {
3006 int i
= getCsiParam(0, 1, 1, width
);
3008 // Erase from here to i characters
3009 eraseLine(currentState
.cursorX
, currentState
.cursorX
+ i
- 1, false);
3016 int i
= getCsiParam(0, 1);
3018 if ((currentState
.cursorY
>= scrollRegionTop
)
3019 && (currentState
.cursorY
<= scrollRegionBottom
)
3022 // I can get the same effect with a scroll-down
3023 scrollingRegionScrollDown(currentState
.cursorY
,
3024 scrollRegionBottom
, i
);
3029 * DCH - Delete char.
3031 private void dch() {
3032 int n
= getCsiParam(0, 1);
3033 DisplayLine line
= display
.get(currentState
.cursorY
);
3034 Cell blank
= new Cell();
3035 for (int i
= 0; i
< n
; i
++) {
3036 line
.delete(currentState
.cursorX
, blank
);
3041 * ICH - Insert blank char at cursor.
3043 private void ich() {
3044 int n
= getCsiParam(0, 1);
3045 DisplayLine line
= display
.get(currentState
.cursorY
);
3046 Cell blank
= new Cell();
3047 for (int i
= 0; i
< n
; i
++) {
3048 line
.insert(currentState
.cursorX
, blank
);
3056 int i
= getCsiParam(0, 1);
3058 if ((currentState
.cursorY
>= scrollRegionTop
)
3059 && (currentState
.cursorY
<= scrollRegionBottom
)) {
3061 // I can get the same effect with a scroll-down
3062 scrollingRegionScrollUp(currentState
.cursorY
,
3063 scrollRegionBottom
, i
);
3068 * HVP - Horizontal and vertical position.
3070 private void hvp() {
3075 * REP - Repeat character.
3077 private void rep() {
3078 int n
= getCsiParam(0, 1);
3079 for (int i
= 0; i
< n
; i
++) {
3080 printCharacter(repCh
);
3088 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
,
3089 getCsiParam(0, 1, 1, height
));
3096 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
,
3097 getCsiParam(0, 1, 1, height
));
3101 * CBT - Go back X tab stops.
3103 private void cbt() {
3104 int tabsToMove
= getCsiParam(0, 1);
3107 for (int i
= 0; i
< tabsToMove
; i
++) {
3108 int j
= currentState
.cursorX
;
3109 for (tabI
= 0; tabI
< tabStops
.size(); tabI
++) {
3110 if (tabStops
.get(tabI
) >= currentState
.cursorX
) {
3118 j
= tabStops
.get(tabI
);
3120 cursorPosition(currentState
.cursorY
, j
);
3125 * CHT - Advance X tab stops.
3127 private void cht() {
3128 int n
= getCsiParam(0, 1);
3129 for (int i
= 0; i
< n
; i
++) {
3130 advanceToNextTabStop();
3135 * SGR - Select graphics rendition.
3137 private void sgr() {
3139 if (csiParams
.size() == 0) {
3140 currentState
.attr
.reset();
3144 for (Integer i
: csiParams
) {
3150 currentState
.attr
.reset();
3155 currentState
.attr
.setBold(true);
3160 currentState
.attr
.setUnderline(true);
3165 currentState
.attr
.setBlink(true);
3170 currentState
.attr
.setReverse(true);
3177 if (type
== DeviceType
.XTERM
) {
3191 if ((type
== DeviceType
.VT220
)
3192 || (type
== DeviceType
.XTERM
)) {
3198 currentState
.attr
.setBold(false);
3203 currentState
.attr
.setUnderline(false);
3208 currentState
.attr
.setBlink(false);
3213 currentState
.attr
.setReverse(false);
3221 // A true VT100/102/220 does not support color, however everyone
3222 // is used to their terminal emulator supporting color so we will
3223 // unconditionally support color for all DeviceType's.
3228 // Set black foreground
3229 currentState
.attr
.setForeColor(Color
.BLACK
);
3232 // Set red foreground
3233 currentState
.attr
.setForeColor(Color
.RED
);
3236 // Set green foreground
3237 currentState
.attr
.setForeColor(Color
.GREEN
);
3240 // Set yellow foreground
3241 currentState
.attr
.setForeColor(Color
.YELLOW
);
3244 // Set blue foreground
3245 currentState
.attr
.setForeColor(Color
.BLUE
);
3248 // Set magenta foreground
3249 currentState
.attr
.setForeColor(Color
.MAGENTA
);
3252 // Set cyan foreground
3253 currentState
.attr
.setForeColor(Color
.CYAN
);
3256 // Set white foreground
3257 currentState
.attr
.setForeColor(Color
.WHITE
);
3260 // Underscore on, default foreground color
3261 currentState
.attr
.setUnderline(true);
3262 currentState
.attr
.setForeColor(Color
.WHITE
);
3265 // Underscore off, default foreground color
3266 currentState
.attr
.setUnderline(false);
3267 currentState
.attr
.setForeColor(Color
.WHITE
);
3270 // Set black background
3271 currentState
.attr
.setBackColor(Color
.BLACK
);
3274 // Set red background
3275 currentState
.attr
.setBackColor(Color
.RED
);
3278 // Set green background
3279 currentState
.attr
.setBackColor(Color
.GREEN
);
3282 // Set yellow background
3283 currentState
.attr
.setBackColor(Color
.YELLOW
);
3286 // Set blue background
3287 currentState
.attr
.setBackColor(Color
.BLUE
);
3290 // Set magenta background
3291 currentState
.attr
.setBackColor(Color
.MAGENTA
);
3294 // Set cyan background
3295 currentState
.attr
.setBackColor(Color
.CYAN
);
3298 // Set white background
3299 currentState
.attr
.setBackColor(Color
.WHITE
);
3302 // Default background
3303 currentState
.attr
.setBackColor(Color
.BLACK
);
3313 * DA - Device attributes.
3316 int extendedFlag
= 0;
3318 if (collectBuffer
.length() > 0) {
3319 String args
= collectBuffer
.substring(1);
3320 if (collectBuffer
.charAt(0) == '>') {
3322 if (collectBuffer
.length() >= 2) {
3323 i
= Integer
.parseInt(args
.toString());
3325 } else if (collectBuffer
.charAt(0) == '=') {
3327 if (collectBuffer
.length() >= 2) {
3328 i
= Integer
.parseInt(args
.toString());
3331 // Unknown code, bail out
3336 if ((i
!= 0) && (i
!= 1)) {
3340 if ((extendedFlag
== 0) && (i
== 0)) {
3341 // Send string directly to remote side
3342 writeRemote(deviceTypeResponse());
3346 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3348 if ((extendedFlag
== 1) && (i
== 0)) {
3350 * Request "What type of terminal are you, what is your
3351 * firmware version, and what hardware options do you have
3354 * Respond: "I am a VT220 (identification code of 1), my
3355 * firmware version is _____ (Pv), and I have _____ Po
3356 * options installed."
3362 if (s8c1t
== true) {
3363 writeRemote("\u009b>1;10;0c");
3365 writeRemote("\033[>1;10;0c");
3371 if ((extendedFlag
== 2) && (i
== 0)) {
3374 * Request "What is your unit ID?"
3376 * Respond: "I was manufactured at site 00 and have a unique ID
3380 writeRemote("\033P!|00010203\033\\");
3385 * DECSTBM - Set top and bottom margins.
3387 private void decstbm() {
3388 boolean decPrivateModeFlag
= false;
3390 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3391 if (collectBuffer
.charAt(i
) == '?') {
3392 decPrivateModeFlag
= true;
3396 if (decPrivateModeFlag
) {
3397 // This could be restore DEC private mode values.
3401 int top
= getCsiParam(0, 1, 1, height
) - 1;
3402 int bottom
= getCsiParam(1, height
, 1, height
) - 1;
3407 scrollRegionTop
= top
;
3408 scrollRegionBottom
= bottom
;
3411 cursorPosition(0, 0);
3416 * DECREQTPARM - Request terminal parameters.
3418 private void decreqtparm() {
3419 int i
= getCsiParam(0, 0);
3421 if ((i
!= 0) && (i
!= 1)) {
3428 * Request terminal parameters.
3432 * Parity NONE, 8 bits, xmitspeed 38400, recvspeed 38400.
3433 * (CLoCk MULtiplier = 1, STP option flags = 0)
3437 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3440 str
= String
.format("\u009b%d;1;1;128;128;1;0x", i
+ 2);
3442 str
= String
.format("\033[%d;1;1;128;128;1;0x", i
+ 2);
3448 * DECSCA - Select Character Attributes.
3450 private void decsca() {
3451 int i
= getCsiParam(0, 0);
3453 if ((i
== 0) || (i
== 2)) {
3455 currentState
.attr
.setProtect(false);
3459 currentState
.attr
.setProtect(true);
3464 * DECSTR - Soft Terminal Reset.
3466 private void decstr() {
3467 // Do exactly like RIS - Reset to initial state
3469 // Do I clear screen too? I think so...
3470 eraseScreen(0, 0, height
- 1, width
- 1, false);
3471 cursorPosition(0, 0);
3475 * DSR - Device status report.
3477 private void dsr() {
3478 boolean decPrivateModeFlag
= false;
3480 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3481 if (collectBuffer
.charAt(i
) == '?') {
3482 decPrivateModeFlag
= true;
3487 int i
= getCsiParam(0, 0);
3492 // Request status report. Respond with "OK, no malfunction."
3494 // Send string directly to remote side
3495 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3498 writeRemote("\u009b0n");
3500 writeRemote("\033[0n");
3505 // Request cursor position. Respond with current position.
3507 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3510 str
= String
.format("\u009b%d;%dR",
3511 currentState
.cursorY
+ 1, currentState
.cursorX
+ 1);
3513 str
= String
.format("\033[%d;%dR",
3514 currentState
.cursorY
+ 1, currentState
.cursorX
+ 1);
3517 // Send string directly to remote side
3522 if (decPrivateModeFlag
== true) {
3524 // Request printer status report. Respond with "Printer not
3527 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3528 && (s8c1t
== true)) {
3529 writeRemote("\u009b?13n");
3531 writeRemote("\033[?13n");
3537 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3538 && (decPrivateModeFlag
== true)
3541 // Request user-defined keys are locked or unlocked. Respond
3542 // with "User-defined keys are locked."
3544 if (s8c1t
== true) {
3545 writeRemote("\u009b?21n");
3547 writeRemote("\033[?21n");
3553 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3554 && (decPrivateModeFlag
== true)
3557 // Request keyboard language. Respond with "Keyboard
3558 // language is North American."
3560 if (s8c1t
== true) {
3561 writeRemote("\u009b?27;1n");
3563 writeRemote("\033[?27;1n");
3570 // Some other option, ignore
3576 * TBC - Tabulation clear.
3578 private void tbc() {
3579 int i
= getCsiParam(0, 0);
3581 List
<Integer
> newStops
= new ArrayList
<Integer
>();
3582 for (Integer stop
: tabStops
) {
3583 if (stop
== currentState
.cursorX
) {
3588 tabStops
= newStops
;
3596 * Erase the characters in the current line from the start column to the
3597 * end column, inclusive.
3599 * @param start starting column to erase (between 0 and width - 1)
3600 * @param end ending column to erase (between 0 and width - 1)
3601 * @param honorProtected if true, do not erase characters with the
3602 * protected attribute set
3604 private void eraseLine(int start
, int end
, final boolean honorProtected
) {
3609 if (end
> width
- 1) {
3616 for (int i
= start
; i
<= end
; i
++) {
3617 DisplayLine line
= display
.get(currentState
.cursorY
);
3618 if ((!honorProtected
)
3619 || ((honorProtected
) && (!line
.charAt(i
).isProtect()))) {
3626 * From the VT102 manual:
3628 * Erasing a character also erases any character
3629 * attribute of the character.
3635 * Erase with the current color a.k.a. back-color erase
3638 line
.setChar(i
, ' ');
3639 line
.setAttr(i
, currentState
.attr
);
3647 * Erase a rectangular section of the screen, inclusive. end column,
3650 * @param startRow starting row to erase (between 0 and height - 1)
3651 * @param startCol starting column to erase (between 0 and width - 1)
3652 * @param endRow ending row to erase (between 0 and height - 1)
3653 * @param endCol ending column to erase (between 0 and width - 1)
3654 * @param honorProtected if true, do not erase characters with the
3655 * protected attribute set
3657 private void eraseScreen(final int startRow
, final int startCol
,
3658 final int endRow
, final int endCol
, final boolean honorProtected
) {
3666 || (endRow
< startRow
)
3667 || (endCol
< startCol
)
3672 oldCursorY
= currentState
.cursorY
;
3673 for (int i
= startRow
; i
<= endRow
; i
++) {
3674 currentState
.cursorY
= i
;
3675 eraseLine(startCol
, endCol
, honorProtected
);
3677 // Erase display clears the double attributes
3678 display
.get(i
).setDoubleWidth(false);
3679 display
.get(i
).setDoubleHeight(0);
3681 currentState
.cursorY
= oldCursorY
;
3685 * VT220 printer functions. All of these are parsed, but won't do
3688 private void printerFunctions() {
3689 boolean decPrivateModeFlag
= false;
3690 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3691 if (collectBuffer
.charAt(i
) == '?') {
3692 decPrivateModeFlag
= true;
3697 int i
= getCsiParam(0, 0);
3702 if (decPrivateModeFlag
== false) {
3708 if (decPrivateModeFlag
== true) {
3709 // Print cursor line
3714 if (decPrivateModeFlag
== true) {
3715 // Auto print mode OFF
3717 // Printer controller OFF
3719 // Characters re-appear on the screen
3720 printerControllerMode
= false;
3725 if (decPrivateModeFlag
== true) {
3729 // Printer controller
3731 // Characters get sucked into oblivion
3732 printerControllerMode
= true;
3743 * Handle the SCAN_OSC_STRING state. Handle this in VT100 because lots
3744 * of remote systems will send an XTerm title sequence even if TERM isn't
3747 * @param xtermChar the character received from the remote side
3749 private void oscPut(final char xtermChar
) {
3751 collectBuffer
.append(xtermChar
);
3754 if (xtermChar
== 0x07) {
3755 String args
= collectBuffer
.substring(0,
3756 collectBuffer
.length() - 1);
3757 String
[] p
= args
.toString().split(";");
3759 if ((p
[0].equals("0")) || (p
[0].equals("2"))) {
3767 // Go to SCAN_GROUND state
3774 * Run this input character through the ECMA48 state machine.
3776 * @param ch character from the remote side
3778 private void consume(char ch
) {
3781 // System.err.printf("%c", ch);
3783 // Special case for VT10x: 7-bit characters only
3784 if ((type
== DeviceType
.VT100
) || (type
== DeviceType
.VT102
)) {
3785 ch
= (char)(ch
& 0x7F);
3788 // Special "anywhere" states
3790 // 18, 1A --> execute, then switch to SCAN_GROUND
3791 if ((ch
== 0x18) || (ch
== 0x1A)) {
3792 // CAN and SUB abort escape sequences
3797 // 80-8F, 91-97, 99, 9A, 9C --> execute, then switch to SCAN_GROUND
3801 && (scanState
!= ScanState
.DCS_ENTRY
)
3802 && (scanState
!= ScanState
.DCS_INTERMEDIATE
)
3803 && (scanState
!= ScanState
.DCS_IGNORE
)
3804 && (scanState
!= ScanState
.DCS_PARAM
)
3805 && (scanState
!= ScanState
.DCS_PASSTHROUGH
)
3808 scanState
= ScanState
.ESCAPE
;
3812 // 0x9B == CSI 8-bit sequence
3814 scanState
= ScanState
.CSI_ENTRY
;
3818 // 0x9D goes to ScanState.OSC_STRING
3820 scanState
= ScanState
.OSC_STRING
;
3824 // 0x90 goes to DCS_ENTRY
3826 scanState
= ScanState
.DCS_ENTRY
;
3830 // 0x98, 0x9E, and 0x9F go to SOSPMAPC_STRING
3831 if ((ch
== 0x98) || (ch
== 0x9E) || (ch
== 0x9F)) {
3832 scanState
= ScanState
.SOSPMAPC_STRING
;
3836 // 0x7F (DEL) is always discarded
3841 switch (scanState
) {
3844 // 00-17, 19, 1C-1F --> execute
3845 // 80-8F, 91-9A, 9C --> execute
3846 if ((ch
<= 0x1F) || ((ch
>= 0x80) && (ch
<= 0x9F))) {
3847 handleControlChar(ch
);
3851 if (((ch
>= 0x20) && (ch
<= 0x7F))
3855 // VT220 printer --> trash bin
3856 if (((type
== DeviceType
.VT220
)
3857 || (type
== DeviceType
.XTERM
))
3858 && (printerControllerMode
== true)
3863 // Hang onto this character
3864 repCh
= mapCharacter(ch
);
3866 // Print this character
3867 printCharacter(repCh
);
3872 // 00-17, 19, 1C-1F --> execute
3874 handleControlChar(ch
);
3878 // 20-2F --> collect, then switch to ESCAPE_INTERMEDIATE
3879 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
3881 scanState
= ScanState
.ESCAPE_INTERMEDIATE
;
3885 // 30-4F, 51-57, 59, 5A, 5C, 60-7E --> dispatch, then switch to GROUND
3886 if ((ch
>= 0x30) && (ch
<= 0x4F)) {
3897 // DECSC - Save cursor
3898 // Note this code overlaps both ANSI and VT52 mode
3903 // DECRC - Restore cursor
3904 // Note this code overlaps both ANSI and VT52 mode
3913 if (vt52Mode
== true) {
3914 // DECANM - Enter ANSI mode
3916 arrowKeyMode
= ArrowKeyMode
.VT100
;
3919 * From the VT102 docs: "You use ANSI mode to select
3920 * most terminal features; the terminal uses the same
3921 * features when it switches to VT52 mode. You
3922 * cannot, however, change most of these features in
3925 * In other words, do not reset any other attributes
3926 * when switching between VT52 submode and ANSI.
3930 currentState
.g0Charset
= CharacterSet
.US
;
3931 currentState
.g1Charset
= CharacterSet
.DRAWING
;
3933 singleshift
= Singleshift
.NONE
;
3934 currentState
.glLockshift
= LockshiftMode
.NONE
;
3935 currentState
.grLockshift
= LockshiftMode
.NONE
;
3939 // DECKPAM - Keypad application mode
3940 // Note this code overlaps both ANSI and VT52 mode
3944 // DECKPNM - Keypad numeric mode
3945 // Note this code overlaps both ANSI and VT52 mode
3952 if (vt52Mode
== true) {
3953 // Cursor up, and stop at the top without scrolling
3958 if (vt52Mode
== true) {
3959 // Cursor down, and stop at the bottom without scrolling
3960 cursorDown(1, false);
3964 if (vt52Mode
== true) {
3965 // Cursor right, and stop at the right without scrolling
3966 cursorRight(1, false);
3970 if (vt52Mode
== true) {
3971 // Cursor left, and stop at the left without scrolling
3972 cursorLeft(1, false);
3979 if (vt52Mode
== true) {
3987 if (vt52Mode
== true) {
3988 // G0 --> Special graphics
3989 currentState
.g0Charset
= CharacterSet
.VT52_GRAPHICS
;
3993 if (vt52Mode
== true) {
3995 currentState
.g0Charset
= CharacterSet
.US
;
3999 if (vt52Mode
== true) {
4001 cursorPosition(0, 0);
4003 // HTS - Horizontal tabulation set
4008 if (vt52Mode
== true) {
4009 // Reverse line feed. Same as RI.
4014 if (vt52Mode
== true) {
4015 // Erase to end of screen
4016 eraseLine(currentState
.cursorX
, width
- 1, false);
4017 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1,
4022 if (vt52Mode
== true) {
4023 // Erase to end of line
4024 eraseLine(currentState
.cursorX
, width
- 1, false);
4030 if (vt52Mode
== true) {
4033 // RI - Reverse index
4038 if (vt52Mode
== false) {
4040 singleshift
= Singleshift
.SS2
;
4044 if (vt52Mode
== false) {
4046 singleshift
= Singleshift
.SS3
;
4053 if ((ch
>= 0x51) && (ch
<= 0x57)) {
4069 if (vt52Mode
== true) {
4070 scanState
= ScanState
.VT52_DIRECT_CURSOR_ADDRESS
;
4078 if (vt52Mode
== true) {
4080 // Send string directly to remote side
4081 writeRemote("\033/Z");
4084 // Send string directly to remote side
4085 writeRemote(deviceTypeResponse());
4096 // VT52 cannot get to any of these other states
4097 if (vt52Mode
== true) {
4102 if ((ch
>= 0x60) && (ch
<= 0x7E)) {
4109 // RIS - Reset to initial state
4111 // Do I clear screen too? I think so...
4112 eraseScreen(0, 0, height
- 1, width
- 1, false);
4113 cursorPosition(0, 0);
4127 if ((type
== DeviceType
.VT220
)
4128 || (type
== DeviceType
.XTERM
)) {
4130 // VT220 lockshift G2 into GL
4131 currentState
.glLockshift
= LockshiftMode
.G2_GL
;
4136 if ((type
== DeviceType
.VT220
)
4137 || (type
== DeviceType
.XTERM
)) {
4139 // VT220 lockshift G3 into GL
4140 currentState
.glLockshift
= LockshiftMode
.G3_GL
;
4158 if ((type
== DeviceType
.VT220
)
4159 || (type
== DeviceType
.XTERM
)) {
4161 // VT220 lockshift G3 into GR
4162 currentState
.grLockshift
= LockshiftMode
.G3_GR
;
4167 if ((type
== DeviceType
.VT220
)
4168 || (type
== DeviceType
.XTERM
)) {
4170 // VT220 lockshift G2 into GR
4171 currentState
.grLockshift
= LockshiftMode
.G2_GR
;
4177 if ((type
== DeviceType
.VT220
)
4178 || (type
== DeviceType
.XTERM
)) {
4180 // VT220 lockshift G1 into GR
4181 currentState
.grLockshift
= LockshiftMode
.G1_GR
;
4191 // 0x5B goes to CSI_ENTRY
4193 scanState
= ScanState
.CSI_ENTRY
;
4196 // 0x5D goes to OSC_STRING
4198 scanState
= ScanState
.OSC_STRING
;
4201 // 0x50 goes to DCS_ENTRY
4203 scanState
= ScanState
.DCS_ENTRY
;
4206 // 0x58, 0x5E, and 0x5F go to SOSPMAPC_STRING
4207 if ((ch
== 0x58) || (ch
== 0x5E) || (ch
== 0x5F)) {
4208 scanState
= ScanState
.SOSPMAPC_STRING
;
4213 case ESCAPE_INTERMEDIATE
:
4214 // 00-17, 19, 1C-1F --> execute
4216 handleControlChar(ch
);
4219 // 20-2F --> collect
4220 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
4224 // 30-7E --> dispatch, then switch to GROUND
4225 if ((ch
>= 0x30) && (ch
<= 0x7E)) {
4228 if ((collectBuffer
.length() == 1)
4229 && (collectBuffer
.charAt(0) == '(')) {
4230 // G0 --> Special graphics
4231 currentState
.g0Charset
= CharacterSet
.DRAWING
;
4233 if ((collectBuffer
.length() == 1)
4234 && (collectBuffer
.charAt(0) == ')')) {
4235 // G1 --> Special graphics
4236 currentState
.g1Charset
= CharacterSet
.DRAWING
;
4238 if ((type
== DeviceType
.VT220
)
4239 || (type
== DeviceType
.XTERM
)) {
4241 if ((collectBuffer
.length() == 1)
4242 && (collectBuffer
.charAt(0) == '*')) {
4243 // G2 --> Special graphics
4244 currentState
.g2Charset
= CharacterSet
.DRAWING
;
4246 if ((collectBuffer
.length() == 1)
4247 && (collectBuffer
.charAt(0) == '+')) {
4248 // G3 --> Special graphics
4249 currentState
.g3Charset
= CharacterSet
.DRAWING
;
4254 if ((collectBuffer
.length() == 1)
4255 && (collectBuffer
.charAt(0) == '(')) {
4256 // G0 --> Alternate character ROM standard character set
4257 currentState
.g0Charset
= CharacterSet
.ROM
;
4259 if ((collectBuffer
.length() == 1)
4260 && (collectBuffer
.charAt(0) == ')')) {
4261 // G1 --> Alternate character ROM standard character set
4262 currentState
.g1Charset
= CharacterSet
.ROM
;
4266 if ((collectBuffer
.length() == 1)
4267 && (collectBuffer
.charAt(0) == '(')) {
4268 // G0 --> Alternate character ROM special graphics
4269 currentState
.g0Charset
= CharacterSet
.ROM_SPECIAL
;
4271 if ((collectBuffer
.length() == 1)
4272 && (collectBuffer
.charAt(0) == ')')) {
4273 // G1 --> Alternate character ROM special graphics
4274 currentState
.g1Charset
= CharacterSet
.ROM_SPECIAL
;
4278 if ((collectBuffer
.length() == 1)
4279 && (collectBuffer
.charAt(0) == '#')) {
4280 // DECDHL - Double-height line (top half)
4285 if ((collectBuffer
.length() == 1)
4286 && (collectBuffer
.charAt(0) == '#')) {
4287 // DECDHL - Double-height line (bottom half)
4290 if ((type
== DeviceType
.VT220
)
4291 || (type
== DeviceType
.XTERM
)) {
4293 if ((collectBuffer
.length() == 1)
4294 && (collectBuffer
.charAt(0) == '(')) {
4296 currentState
.g0Charset
= CharacterSet
.NRC_DUTCH
;
4298 if ((collectBuffer
.length() == 1)
4299 && (collectBuffer
.charAt(0) == ')')) {
4301 currentState
.g1Charset
= CharacterSet
.NRC_DUTCH
;
4303 if ((collectBuffer
.length() == 1)
4304 && (collectBuffer
.charAt(0) == '*')) {
4306 currentState
.g2Charset
= CharacterSet
.NRC_DUTCH
;
4308 if ((collectBuffer
.length() == 1)
4309 && (collectBuffer
.charAt(0) == '+')) {
4311 currentState
.g3Charset
= CharacterSet
.NRC_DUTCH
;
4316 if ((collectBuffer
.length() == 1)
4317 && (collectBuffer
.charAt(0) == '#')) {
4318 // DECSWL - Single-width line
4321 if ((type
== DeviceType
.VT220
)
4322 || (type
== DeviceType
.XTERM
)) {
4324 if ((collectBuffer
.length() == 1)
4325 && (collectBuffer
.charAt(0) == '(')) {
4327 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
4329 if ((collectBuffer
.length() == 1)
4330 && (collectBuffer
.charAt(0) == ')')) {
4332 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
4334 if ((collectBuffer
.length() == 1)
4335 && (collectBuffer
.charAt(0) == '*')) {
4337 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
4339 if ((collectBuffer
.length() == 1)
4340 && (collectBuffer
.charAt(0) == '+')) {
4342 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
4347 if ((collectBuffer
.length() == 1)
4348 && (collectBuffer
.charAt(0) == '#')) {
4349 // DECDWL - Double-width line
4352 if ((type
== DeviceType
.VT220
)
4353 || (type
== DeviceType
.XTERM
)) {
4355 if ((collectBuffer
.length() == 1)
4356 && (collectBuffer
.charAt(0) == '(')) {
4358 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
4360 if ((collectBuffer
.length() == 1)
4361 && (collectBuffer
.charAt(0) == ')')) {
4363 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
4365 if ((collectBuffer
.length() == 1)
4366 && (collectBuffer
.charAt(0) == '*')) {
4368 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
4370 if ((collectBuffer
.length() == 1)
4371 && (collectBuffer
.charAt(0) == '+')) {
4373 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
4378 if ((type
== DeviceType
.VT220
)
4379 || (type
== DeviceType
.XTERM
)) {
4381 if ((collectBuffer
.length() == 1)
4382 && (collectBuffer
.charAt(0) == '(')) {
4384 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
4386 if ((collectBuffer
.length() == 1)
4387 && (collectBuffer
.charAt(0) == ')')) {
4389 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
4391 if ((collectBuffer
.length() == 1)
4392 && (collectBuffer
.charAt(0) == '*')) {
4394 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
4396 if ((collectBuffer
.length() == 1)
4397 && (collectBuffer
.charAt(0) == '+')) {
4399 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
4404 if ((collectBuffer
.length() == 1)
4405 && (collectBuffer
.charAt(0) == '#')) {
4406 // DECALN - Screen alignment display
4415 if ((type
== DeviceType
.VT220
)
4416 || (type
== DeviceType
.XTERM
)) {
4418 if ((collectBuffer
.length() == 1)
4419 && (collectBuffer
.charAt(0) == '(')) {
4420 // G0 --> DEC_SUPPLEMENTAL
4421 currentState
.g0Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4423 if ((collectBuffer
.length() == 1)
4424 && (collectBuffer
.charAt(0) == ')')) {
4425 // G1 --> DEC_SUPPLEMENTAL
4426 currentState
.g1Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4428 if ((collectBuffer
.length() == 1)
4429 && (collectBuffer
.charAt(0) == '*')) {
4430 // G2 --> DEC_SUPPLEMENTAL
4431 currentState
.g2Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4433 if ((collectBuffer
.length() == 1)
4434 && (collectBuffer
.charAt(0) == '+')) {
4435 // G3 --> DEC_SUPPLEMENTAL
4436 currentState
.g3Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4441 if ((type
== DeviceType
.VT220
)
4442 || (type
== DeviceType
.XTERM
)) {
4444 if ((collectBuffer
.length() == 1)
4445 && (collectBuffer
.charAt(0) == '(')) {
4447 currentState
.g0Charset
= CharacterSet
.NRC_SWISS
;
4449 if ((collectBuffer
.length() == 1)
4450 && (collectBuffer
.charAt(0) == ')')) {
4452 currentState
.g1Charset
= CharacterSet
.NRC_SWISS
;
4454 if ((collectBuffer
.length() == 1)
4455 && (collectBuffer
.charAt(0) == '*')) {
4457 currentState
.g2Charset
= CharacterSet
.NRC_SWISS
;
4459 if ((collectBuffer
.length() == 1)
4460 && (collectBuffer
.charAt(0) == '+')) {
4462 currentState
.g3Charset
= CharacterSet
.NRC_SWISS
;
4471 if ((collectBuffer
.length() == 1)
4472 && (collectBuffer
.charAt(0) == '(')) {
4473 // G0 --> United Kingdom set
4474 currentState
.g0Charset
= CharacterSet
.UK
;
4476 if ((collectBuffer
.length() == 1)
4477 && (collectBuffer
.charAt(0) == ')')) {
4478 // G1 --> United Kingdom set
4479 currentState
.g1Charset
= CharacterSet
.UK
;
4481 if ((type
== DeviceType
.VT220
)
4482 || (type
== DeviceType
.XTERM
)) {
4484 if ((collectBuffer
.length() == 1)
4485 && (collectBuffer
.charAt(0) == '*')) {
4486 // G2 --> United Kingdom set
4487 currentState
.g2Charset
= CharacterSet
.UK
;
4489 if ((collectBuffer
.length() == 1)
4490 && (collectBuffer
.charAt(0) == '+')) {
4491 // G3 --> United Kingdom set
4492 currentState
.g3Charset
= CharacterSet
.UK
;
4497 if ((collectBuffer
.length() == 1)
4498 && (collectBuffer
.charAt(0) == '(')) {
4500 currentState
.g0Charset
= CharacterSet
.US
;
4502 if ((collectBuffer
.length() == 1)
4503 && (collectBuffer
.charAt(0) == ')')) {
4505 currentState
.g1Charset
= CharacterSet
.US
;
4507 if ((type
== DeviceType
.VT220
)
4508 || (type
== DeviceType
.XTERM
)) {
4510 if ((collectBuffer
.length() == 1)
4511 && (collectBuffer
.charAt(0) == '*')) {
4513 currentState
.g2Charset
= CharacterSet
.US
;
4515 if ((collectBuffer
.length() == 1)
4516 && (collectBuffer
.charAt(0) == '+')) {
4518 currentState
.g3Charset
= CharacterSet
.US
;
4523 if ((type
== DeviceType
.VT220
)
4524 || (type
== DeviceType
.XTERM
)) {
4526 if ((collectBuffer
.length() == 1)
4527 && (collectBuffer
.charAt(0) == '(')) {
4529 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
4531 if ((collectBuffer
.length() == 1)
4532 && (collectBuffer
.charAt(0) == ')')) {
4534 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
4536 if ((collectBuffer
.length() == 1)
4537 && (collectBuffer
.charAt(0) == '*')) {
4539 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
4541 if ((collectBuffer
.length() == 1)
4542 && (collectBuffer
.charAt(0) == '+')) {
4544 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
4551 if ((type
== DeviceType
.VT220
)
4552 || (type
== DeviceType
.XTERM
)) {
4554 if ((collectBuffer
.length() == 1)
4555 && (collectBuffer
.charAt(0) == '(')) {
4557 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
4559 if ((collectBuffer
.length() == 1)
4560 && (collectBuffer
.charAt(0) == ')')) {
4562 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
4564 if ((collectBuffer
.length() == 1)
4565 && (collectBuffer
.charAt(0) == '*')) {
4567 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
4569 if ((collectBuffer
.length() == 1)
4570 && (collectBuffer
.charAt(0) == '+')) {
4572 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
4577 if ((type
== DeviceType
.VT220
)
4578 || (type
== DeviceType
.XTERM
)) {
4580 if ((collectBuffer
.length() == 1)
4581 && (collectBuffer
.charAt(0) == ' ')) {
4588 if ((type
== DeviceType
.VT220
)
4589 || (type
== DeviceType
.XTERM
)) {
4591 if ((collectBuffer
.length() == 1)
4592 && (collectBuffer
.charAt(0) == ' ')) {
4599 if ((type
== DeviceType
.VT220
)
4600 || (type
== DeviceType
.XTERM
)) {
4602 if ((collectBuffer
.length() == 1)
4603 && (collectBuffer
.charAt(0) == '(')) {
4605 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
4607 if ((collectBuffer
.length() == 1)
4608 && (collectBuffer
.charAt(0) == ')')) {
4610 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
4612 if ((collectBuffer
.length() == 1)
4613 && (collectBuffer
.charAt(0) == '*')) {
4615 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
4617 if ((collectBuffer
.length() == 1)
4618 && (collectBuffer
.charAt(0) == '+')) {
4620 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
4628 if ((type
== DeviceType
.VT220
)
4629 || (type
== DeviceType
.XTERM
)) {
4631 if ((collectBuffer
.length() == 1)
4632 && (collectBuffer
.charAt(0) == '(')) {
4634 currentState
.g0Charset
= CharacterSet
.NRC_GERMAN
;
4636 if ((collectBuffer
.length() == 1)
4637 && (collectBuffer
.charAt(0) == ')')) {
4639 currentState
.g1Charset
= CharacterSet
.NRC_GERMAN
;
4641 if ((collectBuffer
.length() == 1)
4642 && (collectBuffer
.charAt(0) == '*')) {
4644 currentState
.g2Charset
= CharacterSet
.NRC_GERMAN
;
4646 if ((collectBuffer
.length() == 1)
4647 && (collectBuffer
.charAt(0) == '+')) {
4649 currentState
.g3Charset
= CharacterSet
.NRC_GERMAN
;
4660 if ((type
== DeviceType
.VT220
)
4661 || (type
== DeviceType
.XTERM
)) {
4663 if ((collectBuffer
.length() == 1)
4664 && (collectBuffer
.charAt(0) == '(')) {
4666 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH_CA
;
4668 if ((collectBuffer
.length() == 1)
4669 && (collectBuffer
.charAt(0) == ')')) {
4671 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH_CA
;
4673 if ((collectBuffer
.length() == 1)
4674 && (collectBuffer
.charAt(0) == '*')) {
4676 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH_CA
;
4678 if ((collectBuffer
.length() == 1)
4679 && (collectBuffer
.charAt(0) == '+')) {
4681 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH_CA
;
4686 if ((type
== DeviceType
.VT220
)
4687 || (type
== DeviceType
.XTERM
)) {
4689 if ((collectBuffer
.length() == 1)
4690 && (collectBuffer
.charAt(0) == '(')) {
4692 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH
;
4694 if ((collectBuffer
.length() == 1)
4695 && (collectBuffer
.charAt(0) == ')')) {
4697 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH
;
4699 if ((collectBuffer
.length() == 1)
4700 && (collectBuffer
.charAt(0) == '*')) {
4702 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH
;
4704 if ((collectBuffer
.length() == 1)
4705 && (collectBuffer
.charAt(0) == '+')) {
4707 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH
;
4719 if ((type
== DeviceType
.VT220
)
4720 || (type
== DeviceType
.XTERM
)) {
4722 if ((collectBuffer
.length() == 1)
4723 && (collectBuffer
.charAt(0) == '(')) {
4725 currentState
.g0Charset
= CharacterSet
.NRC_ITALIAN
;
4727 if ((collectBuffer
.length() == 1)
4728 && (collectBuffer
.charAt(0) == ')')) {
4730 currentState
.g1Charset
= CharacterSet
.NRC_ITALIAN
;
4732 if ((collectBuffer
.length() == 1)
4733 && (collectBuffer
.charAt(0) == '*')) {
4735 currentState
.g2Charset
= CharacterSet
.NRC_ITALIAN
;
4737 if ((collectBuffer
.length() == 1)
4738 && (collectBuffer
.charAt(0) == '+')) {
4740 currentState
.g3Charset
= CharacterSet
.NRC_ITALIAN
;
4745 if ((type
== DeviceType
.VT220
)
4746 || (type
== DeviceType
.XTERM
)) {
4748 if ((collectBuffer
.length() == 1)
4749 && (collectBuffer
.charAt(0) == '(')) {
4751 currentState
.g0Charset
= CharacterSet
.NRC_SPANISH
;
4753 if ((collectBuffer
.length() == 1)
4754 && (collectBuffer
.charAt(0) == ')')) {
4756 currentState
.g1Charset
= CharacterSet
.NRC_SPANISH
;
4758 if ((collectBuffer
.length() == 1)
4759 && (collectBuffer
.charAt(0) == '*')) {
4761 currentState
.g2Charset
= CharacterSet
.NRC_SPANISH
;
4763 if ((collectBuffer
.length() == 1)
4764 && (collectBuffer
.charAt(0) == '+')) {
4766 currentState
.g3Charset
= CharacterSet
.NRC_SPANISH
;
4813 // 0x9C goes to GROUND
4821 // 00-17, 19, 1C-1F --> execute
4823 handleControlChar(ch
);
4826 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
4827 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
4829 scanState
= ScanState
.CSI_INTERMEDIATE
;
4832 // 30-39, 3B --> param, then switch to CSI_PARAM
4833 if ((ch
>= '0') && (ch
<= '9')) {
4835 scanState
= ScanState
.CSI_PARAM
;
4839 scanState
= ScanState
.CSI_PARAM
;
4842 // 3C-3F --> collect, then switch to CSI_PARAM
4843 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
4845 scanState
= ScanState
.CSI_PARAM
;
4848 // 40-7E --> dispatch, then switch to GROUND
4849 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
4852 // ICH - Insert character
4860 // CUD - Cursor down
4864 // CUF - Cursor forward
4868 // CUB - Cursor backward
4872 // CNL - Cursor down and to column 1
4873 if (type
== DeviceType
.XTERM
) {
4878 // CPL - Cursor up and to column 1
4879 if (type
== DeviceType
.XTERM
) {
4884 // CHA - Cursor to column # in current row
4885 if (type
== DeviceType
.XTERM
) {
4890 // CUP - Cursor position
4894 // CHT - Cursor forward X tab stops (default 1)
4895 if (type
== DeviceType
.XTERM
) {
4900 // ED - Erase in display
4904 // EL - Erase in line
4919 // DCH - Delete character
4926 // Scroll up X lines (default 1)
4927 if (type
== DeviceType
.XTERM
) {
4932 // Scroll down X lines (default 1)
4933 if (type
== DeviceType
.XTERM
) {
4942 if ((type
== DeviceType
.VT220
)
4943 || (type
== DeviceType
.XTERM
)) {
4945 // ECH - Erase character
4952 // CBT - Cursor backward X tab stops (default 1)
4953 if (type
== DeviceType
.XTERM
) {
4964 // HPA - Cursor to column # in current row. Same as CHA
4965 if (type
== DeviceType
.XTERM
) {
4970 // HPR - Cursor right. Same as CUF
4971 if (type
== DeviceType
.XTERM
) {
4976 // REP - Repeat last char X times
4977 if (type
== DeviceType
.XTERM
) {
4982 // DA - Device attributes
4986 // VPA - Cursor to row, current column.
4987 if (type
== DeviceType
.XTERM
) {
4992 // VPR - Cursor down. Same as CUD
4993 if (type
== DeviceType
.XTERM
) {
4998 // HVP - Horizontal and vertical position
5002 // TBC - Tabulation clear
5006 // Sets an ANSI or DEC private toggle
5010 if ((type
== DeviceType
.VT220
)
5011 || (type
== DeviceType
.XTERM
)) {
5013 // Printer functions
5021 // Sets an ANSI or DEC private toggle
5025 // SGR - Select graphics rendition
5029 // DSR - Device status report
5036 // DECLL - Load leds
5040 // DECSTBM - Set top and bottom margins
5044 // Save cursor (ANSI.SYS)
5045 if (type
== DeviceType
.XTERM
) {
5046 savedState
.cursorX
= currentState
.cursorX
;
5047 savedState
.cursorY
= currentState
.cursorY
;
5053 // Restore cursor (ANSI.SYS)
5054 if (type
== DeviceType
.XTERM
) {
5055 cursorPosition(savedState
.cursorY
, savedState
.cursorX
);
5062 // DECREQTPARM - Request terminal parameters
5078 // 0x9C goes to GROUND
5083 // 0x3A goes to CSI_IGNORE
5085 scanState
= ScanState
.CSI_IGNORE
;
5090 // 00-17, 19, 1C-1F --> execute
5092 handleControlChar(ch
);
5095 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
5096 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5098 scanState
= ScanState
.CSI_INTERMEDIATE
;
5101 // 30-39, 3B --> param
5102 if ((ch
>= '0') && (ch
<= '9')) {
5109 // 0x3A goes to CSI_IGNORE
5111 scanState
= ScanState
.CSI_IGNORE
;
5113 // 0x3C-3F goes to CSI_IGNORE
5114 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5115 scanState
= ScanState
.CSI_IGNORE
;
5118 // 40-7E --> dispatch, then switch to GROUND
5119 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5122 // ICH - Insert character
5130 // CUD - Cursor down
5134 // CUF - Cursor forward
5138 // CUB - Cursor backward
5142 // CNL - Cursor down and to column 1
5143 if (type
== DeviceType
.XTERM
) {
5148 // CPL - Cursor up and to column 1
5149 if (type
== DeviceType
.XTERM
) {
5154 // CHA - Cursor to column # in current row
5155 if (type
== DeviceType
.XTERM
) {
5160 // CUP - Cursor position
5164 // CHT - Cursor forward X tab stops (default 1)
5165 if (type
== DeviceType
.XTERM
) {
5170 // ED - Erase in display
5174 // EL - Erase in line
5189 // DCH - Delete character
5196 // Scroll up X lines (default 1)
5197 if (type
== DeviceType
.XTERM
) {
5202 // Scroll down X lines (default 1)
5203 if (type
== DeviceType
.XTERM
) {
5212 if ((type
== DeviceType
.VT220
)
5213 || (type
== DeviceType
.XTERM
)) {
5215 // ECH - Erase character
5222 // CBT - Cursor backward X tab stops (default 1)
5223 if (type
== DeviceType
.XTERM
) {
5234 // HPA - Cursor to column # in current row. Same as CHA
5235 if (type
== DeviceType
.XTERM
) {
5240 // HPR - Cursor right. Same as CUF
5241 if (type
== DeviceType
.XTERM
) {
5246 // REP - Repeat last char X times
5247 if (type
== DeviceType
.XTERM
) {
5252 // DA - Device attributes
5256 // VPA - Cursor to row, current column.
5257 if (type
== DeviceType
.XTERM
) {
5262 // VPR - Cursor down. Same as CUD
5263 if (type
== DeviceType
.XTERM
) {
5268 // HVP - Horizontal and vertical position
5272 // TBC - Tabulation clear
5276 // Sets an ANSI or DEC private toggle
5280 if ((type
== DeviceType
.VT220
)
5281 || (type
== DeviceType
.XTERM
)) {
5283 // Printer functions
5291 // Sets an ANSI or DEC private toggle
5295 // SGR - Select graphics rendition
5299 // DSR - Device status report
5306 // DECLL - Load leds
5310 // DECSTBM - Set top and bottom margins
5320 // DECREQTPARM - Request terminal parameters
5337 case CSI_INTERMEDIATE
:
5338 // 00-17, 19, 1C-1F --> execute
5340 handleControlChar(ch
);
5343 // 20-2F --> collect
5344 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5348 // 0x30-3F goes to CSI_IGNORE
5349 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
5350 scanState
= ScanState
.CSI_IGNORE
;
5353 // 40-7E --> dispatch, then switch to GROUND
5354 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5406 if (((type
== DeviceType
.VT220
)
5407 || (type
== DeviceType
.XTERM
))
5408 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
5410 // DECSCL - compatibility level
5413 if ((type
== DeviceType
.XTERM
)
5414 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '!')
5416 // DECSTR - Soft terminal reset
5421 if (((type
== DeviceType
.VT220
)
5422 || (type
== DeviceType
.XTERM
))
5423 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
5451 // 00-17, 19, 1C-1F --> execute
5453 handleControlChar(ch
);
5456 // 20-2F --> collect
5457 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5461 // 40-7E --> ignore, then switch to GROUND
5462 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5466 // 20-3F, 7F --> ignore
5472 // 0x9C goes to GROUND
5477 // 0x1B 0x5C goes to GROUND
5482 if ((collectBuffer
.length() > 0)
5483 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5489 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
5490 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5492 scanState
= ScanState
.DCS_INTERMEDIATE
;
5495 // 30-39, 3B --> param, then switch to DCS_PARAM
5496 if ((ch
>= '0') && (ch
<= '9')) {
5498 scanState
= ScanState
.DCS_PARAM
;
5502 scanState
= ScanState
.DCS_PARAM
;
5505 // 3C-3F --> collect, then switch to DCS_PARAM
5506 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5508 scanState
= ScanState
.DCS_PARAM
;
5511 // 00-17, 19, 1C-1F, 7F --> ignore
5513 // 0x3A goes to DCS_IGNORE
5515 scanState
= ScanState
.DCS_IGNORE
;
5518 // 0x40-7E goes to DCS_PASSTHROUGH
5519 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5520 scanState
= ScanState
.DCS_PASSTHROUGH
;
5524 case DCS_INTERMEDIATE
:
5526 // 0x9C goes to GROUND
5531 // 0x1B 0x5C goes to GROUND
5536 if ((collectBuffer
.length() > 0) &&
5537 (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5543 // 0x30-3F goes to DCS_IGNORE
5544 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
5545 scanState
= ScanState
.DCS_IGNORE
;
5548 // 0x40-7E goes to DCS_PASSTHROUGH
5549 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5550 scanState
= ScanState
.DCS_PASSTHROUGH
;
5553 // 00-17, 19, 1C-1F, 7F --> ignore
5558 // 0x9C goes to GROUND
5563 // 0x1B 0x5C goes to GROUND
5568 if ((collectBuffer
.length() > 0) &&
5569 (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5575 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
5576 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5578 scanState
= ScanState
.DCS_INTERMEDIATE
;
5581 // 30-39, 3B --> param
5582 if ((ch
>= '0') && (ch
<= '9')) {
5589 // 00-17, 19, 1C-1F, 7F --> ignore
5591 // 0x3A, 3C-3F goes to DCS_IGNORE
5593 scanState
= ScanState
.DCS_IGNORE
;
5595 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5596 scanState
= ScanState
.DCS_IGNORE
;
5599 // 0x40-7E goes to DCS_PASSTHROUGH
5600 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5601 scanState
= ScanState
.DCS_PASSTHROUGH
;
5605 case DCS_PASSTHROUGH
:
5606 // 0x9C goes to GROUND
5611 // 0x1B 0x5C goes to GROUND
5616 if ((collectBuffer
.length() > 0)
5617 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5623 // 00-17, 19, 1C-1F, 20-7E --> put
5631 if ((ch
>= 0x1C) && (ch
<= 0x1F)) {
5634 if ((ch
>= 0x20) && (ch
<= 0x7E)) {
5643 // 00-17, 19, 1C-1F, 20-7F --> ignore
5645 // 0x9C goes to GROUND
5652 case SOSPMAPC_STRING
:
5653 // 00-17, 19, 1C-1F, 20-7F --> ignore
5655 // 0x9C goes to GROUND
5663 // Special case for Xterm: OSC can pass control characters
5664 if ((ch
== 0x9C) || (ch
<= 0x07)) {
5668 // 00-17, 19, 1C-1F --> ignore
5670 // 20-7F --> osc_put
5671 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
5675 // 0x9C goes to GROUND
5682 case VT52_DIRECT_CURSOR_ADDRESS
:
5683 // This is a special case for the VT52 sequence "ESC Y l c"
5684 if (collectBuffer
.length() == 0) {
5686 } else if (collectBuffer
.length() == 1) {
5687 // We've got the two characters, one in the buffer and the
5689 cursorPosition(collectBuffer
.charAt(0) - '\040', ch
- '\040');
5698 * Expose current cursor X to outside world.
5700 * @return current cursor X
5702 public final int getCursorX() {
5703 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
5704 return currentState
.cursorX
* 2;
5706 return currentState
.cursorX
;
5710 * Expose current cursor Y to outside world.
5712 * @return current cursor Y
5714 public final int getCursorY() {
5715 return currentState
.cursorY
;
5719 * Read function runs on a separate thread.
5722 boolean utf8
= false;
5723 boolean done
= false;
5725 if (type
== DeviceType
.XTERM
) {
5729 // available() will often return > 1, so we need to read in chunks to
5731 char [] readBufferUTF8
= null;
5732 byte [] readBuffer
= null;
5734 readBufferUTF8
= new char[128];
5736 readBuffer
= new byte[128];
5739 while (!done
&& !stopReaderThread
) {
5741 int n
= inputStream
.available();
5742 // System.err.printf("available() %d\n", n); System.err.flush();
5744 if (readBufferUTF8
.length
< n
) {
5745 // The buffer wasn't big enough, make it huger
5746 int newSizeHalf
= Math
.max(readBufferUTF8
.length
, n
);
5748 readBufferUTF8
= new char[newSizeHalf
* 2];
5751 if (readBuffer
.length
< n
) {
5752 // The buffer wasn't big enough, make it huger
5753 int newSizeHalf
= Math
.max(readBuffer
.length
, n
);
5754 readBuffer
= new byte[newSizeHalf
* 2];
5760 rc
= input
.read(readBufferUTF8
, 0,
5761 readBufferUTF8
.length
);
5763 rc
= inputStream
.read(readBuffer
, 0,
5766 // System.err.printf("read() %d\n", rc); System.err.flush();
5771 for (int i
= 0; i
< rc
; i
++) {
5774 ch
= readBufferUTF8
[i
];
5778 // Don't step on UI events
5779 synchronized (this) {
5784 // System.err.println("end while loop"); System.err.flush();
5785 } catch (IOException e
) {
5786 e
.printStackTrace();
5789 } // while ((done == false) && (stopReaderThread == false))
5791 // Let the rest of the world know that I am done.
5792 stopReaderThread
= true;
5794 // System.err.println("*** run() exiting..."); System.err.flush();