2 * Jexer - Java Text User Interface
4 * The MIT License (MIT)
6 * Copyright (C) 2016 Kevin Lamonte
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
26 * @author Kevin Lamonte [kevin.lamonte@gmail.com]
29 package jexer
.tterminal
;
31 import java
.io
.InputStream
;
32 import java
.io
.InputStreamReader
;
33 import java
.io
.IOException
;
34 import java
.io
.OutputStream
;
35 import java
.io
.OutputStreamWriter
;
36 import java
.io
.Reader
;
37 import java
.io
.UnsupportedEncodingException
;
38 import java
.io
.Writer
;
39 import java
.util
.ArrayList
;
40 import java
.util
.Collections
;
41 import java
.util
.LinkedList
;
42 import java
.util
.List
;
44 import jexer
.TKeypress
;
45 import jexer
.event
.TMouseEvent
;
46 import jexer
.bits
.Color
;
47 import jexer
.bits
.Cell
;
48 import jexer
.bits
.CellAttributes
;
49 import static jexer
.TKeypress
.*;
52 * This implements a complex ANSI ECMA-48/ISO 6429/ANSI X3.64 type consoles,
53 * including a scrollback buffer.
56 * It currently implements VT100, VT102, VT220, and XTERM with the following
60 * - The vttest scenario for VT220 8-bit controls (11.1.2.3) reports a
61 * failure with XTERM. This is due to vttest failing to decode the UTF-8
65 * - Smooth scrolling, printing, keyboard locking, keyboard leds, and tests
66 * from VT100 are not supported.
69 * - User-defined keys (DECUDK), downloadable fonts (DECDLD), and VT100/ANSI
70 * compatibility mode (DECSCL) from VT220 are not supported. (Also,
71 * because DECSCL is not supported, it will fail the last part of the
72 * vttest "Test of VT52 mode" if DeviceType is set to VT220.)
75 * - Numeric/application keys from the number pad are not supported because
76 * they are not exposed from the TKeypress API.
79 * - VT52 HOLD SCREEN mode is not supported.
82 * - In VT52 graphics mode, the 3/, 5/, and 7/ characters (fraction
83 * numerators) are not rendered correctly.
86 * - All data meant for the 'printer' (CSI Pc ? i) is discarded.
88 public class ECMA48
implements Runnable
{
91 * The emulator can emulate several kinds of terminals.
93 public enum DeviceType
{
95 * DEC VT100 but also including the three VT102 functions.
116 * Return the proper primary Device Attributes string.
118 * @return string to send to remote side that is appropriate for the
121 private String
deviceTypeResponse() {
124 // "I am a VT100 with advanced video option" (often VT102)
132 // "I am a VT220" - 7 bit version
134 return "\033[?62;1;6c";
136 // "I am a VT220" - 8 bit version
137 return "\u009b?62;1;6c";
139 // "I am a VT100 with advanced video option" (often VT102)
142 throw new IllegalArgumentException("Invalid device type: " + type
);
147 * Return the proper TERM environment variable for this device type.
149 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
150 * @return "vt100", "xterm", etc.
152 public static String
deviceTypeTerm(final DeviceType deviceType
) {
153 switch (deviceType
) {
167 throw new IllegalArgumentException("Invalid device type: "
173 * Return the proper LANG for this device type. Only XTERM devices know
174 * about UTF-8, the others are defined by their standard to be either
175 * 7-bit or 8-bit characters only.
177 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
178 * @param baseLang a base language without UTF-8 flag such as "C" or
180 * @return "en_US", "en_US.UTF-8", etc.
182 public static String
deviceTypeLang(final DeviceType deviceType
,
183 final String baseLang
) {
185 switch (deviceType
) {
193 return baseLang
+ ".UTF-8";
196 throw new IllegalArgumentException("Invalid device type: "
202 * Write a string directly to the remote side.
204 * @param str string to send
206 private void writeRemote(final String str
) {
207 if (stopReaderThread
) {
208 // Reader hit EOF, bail out now.
213 // System.err.printf("writeRemote() '%s'\n", str);
219 if (outputStream
== null) {
223 for (int i
= 0; i
< str
.length(); i
++) {
224 outputStream
.write(str
.charAt(i
));
226 outputStream
.flush();
227 } catch (IOException e
) {
233 if (output
== null) {
239 } catch (IOException e
) {
245 throw new IllegalArgumentException("Invalid device type: " + type
);
250 * Close the input and output streams and stop the reader thread. Note
251 * that it is safe to call this multiple times.
253 public final void close() {
255 // Synchronize so we don't stomp on the reader thread.
256 synchronized (this) {
258 // Close the input stream
263 if (inputStream
!= null) {
266 } catch (IOException e
) {
276 } catch (IOException e
) {
285 // Tell the reader thread to stop looking at input.
286 if (stopReaderThread
== false) {
287 stopReaderThread
= true;
290 } catch (InterruptedException e
) {
295 // Close the output stream.
300 if (outputStream
!= null) {
302 outputStream
.close();
303 } catch (IOException e
) {
310 if (output
!= null) {
313 } catch (IOException e
) {
320 throw new IllegalArgumentException("Invalid device type: "
323 } // synchronized (this)
327 * When true, the reader thread is expected to exit.
329 private volatile boolean stopReaderThread
= false;
334 private Thread readerThread
= null;
337 * See if the reader thread is still running.
339 * @return if true, we are still connected to / reading from the remote
342 public final boolean isReading() {
343 return (!stopReaderThread
);
347 * The type of emulator to be.
349 private DeviceType type
= DeviceType
.VT102
;
352 * Obtain a new blank display line for an external user
353 * (e.g. TTerminalWindow).
355 * @return new blank line
357 public final DisplayLine
getBlankDisplayLine() {
358 return new DisplayLine(currentState
.attr
);
362 * The scrollback buffer characters + attributes.
364 private volatile List
<DisplayLine
> scrollback
;
367 * Get the scrollback buffer.
369 * @return the scrollback buffer
371 public final List
<DisplayLine
> getScrollbackBuffer() {
376 * The raw display buffer characters + attributes.
378 private volatile List
<DisplayLine
> display
;
381 * Get the display buffer.
383 * @return the display buffer
385 public final List
<DisplayLine
> getDisplayBuffer() {
390 * The terminal's input. For type == XTERM, this is an InputStreamReader
391 * with UTF-8 encoding.
393 private Reader input
;
396 * The terminal's raw InputStream. This is used for type != XTERM.
398 private volatile InputStream inputStream
;
401 * The terminal's output. For type == XTERM, this wraps an
402 * OutputStreamWriter with UTF-8 encoding.
404 private Writer output
;
407 * The terminal's raw OutputStream. This is used for type != XTERM.
409 private OutputStream outputStream
;
412 * Parser character scan states.
429 VT52_DIRECT_CURSOR_ADDRESS
433 * Current scanning state.
435 private ScanState scanState
;
438 * The selected number pad mode (DECKPAM, DECKPNM). We record this, but
439 * can't really use it in keypress() because we do not see number pad
440 * events from TKeypress.
442 private enum KeypadMode
{
448 * Arrow keys can emit three different sequences (DECCKM or VT52
451 private enum ArrowKeyMode
{
458 * Available character sets for GL, GR, G0, G1, G2, G3.
460 private enum CharacterSet
{
481 * Single-shift states used by the C1 control characters SS2 (0x8E) and
484 private enum Singleshift
{
491 * VT220+ lockshift states.
493 private enum LockshiftMode
{
503 * XTERM mouse reporting protocols.
505 private enum MouseProtocol
{
514 * Which mouse protocol is active.
516 private MouseProtocol mouseProtocol
= MouseProtocol
.OFF
;
519 * XTERM mouse reporting encodings.
521 private enum MouseEncoding
{
528 * Which mouse encoding is active.
530 private MouseEncoding mouseEncoding
= MouseEncoding
.X10
;
533 * Physical display width. We start at 80x24, but the user can resize us
539 * Get the display width.
541 * @return the width (usually 80 or 132)
543 public final int getWidth() {
548 * Physical display height. We start at 80x24, but the user can resize
554 * Get the display height.
556 * @return the height (usually 24)
558 public final int getHeight() {
563 * Top margin of the scrolling region.
565 private int scrollRegionTop
;
568 * Bottom margin of the scrolling region.
570 private int scrollRegionBottom
;
573 * Right margin column number. This can be selected by the remote side
574 * to be 80/132 (rightMargin values 79/131), or it can be (width - 1).
576 private int rightMargin
;
579 * Last character printed.
584 * VT100-style line wrapping: a character is placed in column 80 (or
585 * 132), but the line does NOT wrap until another character is written to
586 * column 1 of the next line, after which the cursor moves to column 2.
588 private boolean wrapLineFlag
;
591 * VT220 single shift flag.
593 private Singleshift singleshift
= Singleshift
.NONE
;
596 * true = insert characters, false = overwrite.
598 private boolean insertMode
= false;
601 * VT52 mode as selected by DECANM. True means VT52, false means
602 * ANSI. Default is ANSI.
604 private boolean vt52Mode
= false;
607 * Visible cursor (DECTCEM).
609 private boolean cursorVisible
= true;
612 * Get visible cursor flag.
614 * @return if true, the cursor is visible
616 public final boolean isCursorVisible() {
617 return cursorVisible
;
621 * Screen title as set by the xterm OSC sequence. Lots of applications
622 * send a screenTitle regardless of whether it is an xterm client or not.
624 private String screenTitle
= "";
627 * Get the screen title as set by the xterm OSC sequence. Lots of
628 * applications send a screenTitle regardless of whether it is an xterm
631 * @return screen title
633 public final String
getScreenTitle() {
638 * Parameter characters being collected.
640 private List
<Integer
> csiParams
;
643 * Non-csi collect buffer.
645 private StringBuilder collectBuffer
;
648 * When true, use the G1 character set.
650 private boolean shiftOut
= false;
653 * Horizontal tab stop locations.
655 private List
<Integer
> tabStops
;
658 * S8C1T. True means 8bit controls, false means 7bit controls.
660 private boolean s8c1t
= false;
663 * Printer mode. True means send all output to printer, which discards
666 private boolean printerControllerMode
= false;
669 * LMN line mode. If true, linefeed() puts the cursor on the first
670 * column of the next line. If false, linefeed() puts the cursor one
671 * line down on the current line. The default is false.
673 private boolean newLineMode
= false;
676 * Whether arrow keys send ANSI, VT100, or VT52 sequences.
678 private ArrowKeyMode arrowKeyMode
;
681 * Whether number pad keys send VT100 or VT52, application or numeric
684 @SuppressWarnings("unused")
685 private KeypadMode keypadMode
;
688 * When true, the terminal is in 132-column mode (DECCOLM).
690 private boolean columns132
= false;
693 * Get 132 columns value.
695 * @return if true, the terminal is in 132 column mode
697 public final boolean isColumns132() {
702 * true = reverse video. Set by DECSCNM.
704 private boolean reverseVideo
= false;
707 * false = echo characters locally.
709 private boolean fullDuplex
= true;
712 * DECSC/DECRC save/restore a subset of the total state. This class
713 * encapsulates those specific flags/modes.
715 private class SaveableState
{
718 * When true, cursor positions are relative to the scrolling region.
720 public boolean originMode
= false;
723 * The current editing X position.
725 public int cursorX
= 0;
728 * The current editing Y position.
730 public int cursorY
= 0;
733 * Which character set is currently selected in G0.
735 public CharacterSet g0Charset
= CharacterSet
.US
;
738 * Which character set is currently selected in G1.
740 public CharacterSet g1Charset
= CharacterSet
.DRAWING
;
743 * Which character set is currently selected in G2.
745 public CharacterSet g2Charset
= CharacterSet
.US
;
748 * Which character set is currently selected in G3.
750 public CharacterSet g3Charset
= CharacterSet
.US
;
753 * Which character set is currently selected in GR.
755 public CharacterSet grCharset
= CharacterSet
.DRAWING
;
758 * The current drawing attributes.
760 public CellAttributes attr
;
765 public LockshiftMode glLockshift
= LockshiftMode
.NONE
;
770 public LockshiftMode grLockshift
= LockshiftMode
.NONE
;
775 public boolean lineWrap
= true;
780 public void reset() {
784 g0Charset
= CharacterSet
.US
;
785 g1Charset
= CharacterSet
.DRAWING
;
786 g2Charset
= CharacterSet
.US
;
787 g3Charset
= CharacterSet
.US
;
788 grCharset
= CharacterSet
.DRAWING
;
789 attr
= new CellAttributes();
790 glLockshift
= LockshiftMode
.NONE
;
791 grLockshift
= LockshiftMode
.NONE
;
796 * Copy attributes from another instance.
798 * @param that the other instance to match
800 public void setTo(final SaveableState that
) {
801 this.originMode
= that
.originMode
;
802 this.cursorX
= that
.cursorX
;
803 this.cursorY
= that
.cursorY
;
804 this.g0Charset
= that
.g0Charset
;
805 this.g1Charset
= that
.g1Charset
;
806 this.g2Charset
= that
.g2Charset
;
807 this.g3Charset
= that
.g3Charset
;
808 this.grCharset
= that
.grCharset
;
809 this.attr
= new CellAttributes();
810 this.attr
.setTo(that
.attr
);
811 this.glLockshift
= that
.glLockshift
;
812 this.grLockshift
= that
.grLockshift
;
813 this.lineWrap
= that
.lineWrap
;
817 * Public constructor.
819 public SaveableState() {
825 * The current terminal state.
827 private SaveableState currentState
;
830 * The last saved terminal state.
832 private SaveableState savedState
;
835 * Clear the CSI parameters and flags.
837 private void toGround() {
839 collectBuffer
= new StringBuilder(8);
840 scanState
= ScanState
.GROUND
;
844 * Reset the tab stops list.
846 private void resetTabStops() {
848 for (int i
= 0; (i
* 8) <= rightMargin
; i
++) {
849 tabStops
.add(new Integer(i
* 8));
854 * Reset the emulation state.
856 private void reset() {
858 currentState
= new SaveableState();
859 savedState
= new SaveableState();
860 scanState
= ScanState
.GROUND
;
864 scrollRegionBottom
= height
- 1;
865 rightMargin
= width
- 1;
867 arrowKeyMode
= ArrowKeyMode
.ANSI
;
868 keypadMode
= KeypadMode
.Numeric
;
869 wrapLineFlag
= false;
877 reverseVideo
= false;
879 cursorVisible
= true;
882 singleshift
= Singleshift
.NONE
;
884 printerControllerMode
= false;
887 mouseProtocol
= MouseProtocol
.OFF
;
888 mouseEncoding
= MouseEncoding
.X10
;
898 * Public constructor.
900 * @param type one of the DeviceType constants to select VT100, VT102,
902 * @param inputStream an InputStream connected to the remote side. For
903 * type == XTERM, inputStream is converted to a Reader with UTF-8
905 * @param outputStream an OutputStream connected to the remote user. For
906 * type == XTERM, outputStream is converted to a Writer with UTF-8
908 * @throws UnsupportedEncodingException if an exception is thrown when
909 * creating the InputStreamReader
911 public ECMA48(final DeviceType type
, final InputStream inputStream
,
912 final OutputStream outputStream
) throws UnsupportedEncodingException
{
914 assert (inputStream
!= null);
915 assert (outputStream
!= null);
917 csiParams
= new ArrayList
<Integer
>();
918 tabStops
= new ArrayList
<Integer
>();
919 scrollback
= new LinkedList
<DisplayLine
>();
920 display
= new LinkedList
<DisplayLine
>();
923 this.inputStream
= inputStream
;
924 if (type
== DeviceType
.XTERM
) {
925 this.input
= new InputStreamReader(inputStream
, "UTF-8");
926 this.output
= new OutputStreamWriter(outputStream
, "UTF-8");
927 this.outputStream
= null;
930 this.outputStream
= outputStream
;
934 for (int i
= 0; i
< height
; i
++) {
935 display
.add(new DisplayLine(currentState
.attr
));
938 // Spin up the input reader
939 readerThread
= new Thread(this);
940 readerThread
.start();
944 * Append a new line to the bottom of the display, adding lines off the
945 * top to the scrollback buffer.
947 private void newDisplayLine() {
948 // Scroll the top line off into the scrollback buffer
949 scrollback
.add(display
.get(0));
951 DisplayLine line
= new DisplayLine(currentState
.attr
);
952 line
.setReverseColor(reverseVideo
);
957 * Wraps the current line.
959 private void wrapCurrentLine() {
960 if (currentState
.cursorY
== height
- 1) {
963 if (currentState
.cursorY
< height
- 1) {
964 currentState
.cursorY
++;
966 currentState
.cursorX
= 0;
970 * Handle a carriage return.
972 private void carriageReturn() {
973 currentState
.cursorX
= 0;
974 wrapLineFlag
= false;
978 * Reverse the color of the visible display.
980 private void invertDisplayColors() {
981 for (DisplayLine line
: display
) {
982 line
.setReverseColor(!line
.isReverseColor());
989 private void linefeed() {
991 if (currentState
.cursorY
< scrollRegionBottom
) {
992 // Increment screen y
993 currentState
.cursorY
++;
996 // Screen y does not increment
999 * Two cases: either we're inside a scrolling region or not. If
1000 * the scrolling region bottom is the bottom of the screen, then
1001 * push the top line into the buffer. Else scroll the scrolling
1004 if ((scrollRegionBottom
== height
- 1) && (scrollRegionTop
== 0)) {
1006 // We're at the bottom of the scroll region, AND the scroll
1007 // region is the entire screen.
1013 // We're at the bottom of the scroll region, AND the scroll
1014 // region is NOT the entire screen.
1015 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
1020 currentState
.cursorX
= 0;
1022 wrapLineFlag
= false;
1026 * Prints one character to the display buffer.
1028 * @param ch character to display
1030 private void printCharacter(final char ch
) {
1031 int rightMargin
= this.rightMargin
;
1033 // Check if we have double-width, and if so chop at 40/66 instead of
1035 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
1036 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
1039 // Check the unusually-complicated line wrapping conditions...
1040 if (currentState
.cursorX
== rightMargin
) {
1042 if (currentState
.lineWrap
== true) {
1044 * This case happens when: the cursor was already on the
1045 * right margin (either through printing or by an explicit
1046 * placement command), and a character was printed.
1048 * The line wraps only when a new character arrives AND the
1049 * cursor is already on the right margin AND has placed a
1050 * character in its cell. Easier to see than to explain.
1052 if (wrapLineFlag
== false) {
1054 * This block marks the case that we are in the margin
1055 * and the first character has been received and printed.
1057 wrapLineFlag
= true;
1060 * This block marks the case that we are in the margin
1061 * and the second character has been received and
1064 wrapLineFlag
= false;
1068 } else if (currentState
.cursorX
<= rightMargin
) {
1070 * This is the normal case: a character came in and was printed
1071 * to the left of the right margin column.
1074 // Turn off VT100 special-case flag
1075 wrapLineFlag
= false;
1078 // "Print" the character
1079 Cell newCell
= new Cell(ch
);
1080 CellAttributes newCellAttributes
= (CellAttributes
) newCell
;
1081 newCellAttributes
.setTo(currentState
.attr
);
1082 DisplayLine line
= display
.get(currentState
.cursorY
);
1083 // Insert mode special case
1084 if (insertMode
== true) {
1085 line
.insert(currentState
.cursorX
, newCell
);
1087 // Replace an existing character
1088 line
.replace(currentState
.cursorX
, newCell
);
1091 // Increment horizontal
1092 if (wrapLineFlag
== false) {
1093 currentState
.cursorX
++;
1094 if (currentState
.cursorX
> rightMargin
) {
1095 currentState
.cursorX
--;
1101 * Translate the mouse event to a VT100, VT220, or XTERM sequence and
1102 * send to the remote side.
1104 * @param mouse mouse event received from the local user
1106 public void mouse(final TMouseEvent mouse
) {
1109 System.err.printf("mouse(): protocol %s encoding %s mouse %s\n",
1110 mouseProtocol, mouseEncoding, mouse);
1113 if (mouseEncoding
== MouseEncoding
.X10
) {
1114 // We will support X10 but only for (160,94) and smaller.
1115 if ((mouse
.getX() >= 160) || (mouse
.getY() >= 94)) {
1120 switch (mouseProtocol
) {
1127 // Only report button presses
1128 if (mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
) {
1134 // Only report button presses and releases
1135 if ((mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
)
1136 && (mouse
.getType() != TMouseEvent
.Type
.MOUSE_UP
)
1144 * Only report button presses, button releases, and motions that
1145 * have a button down (i.e. drag-and-drop).
1147 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1148 if (!mouse
.isMouse1()
1149 && !mouse
.isMouse2()
1150 && !mouse
.isMouse3()
1151 && !mouse
.isMouseWheelUp()
1152 && !mouse
.isMouseWheelDown()
1160 // Report everything
1164 // Now encode the event
1165 StringBuilder sb
= new StringBuilder(6);
1166 if (mouseEncoding
== MouseEncoding
.SGR
) {
1167 sb
.append((char) 0x1B);
1170 if (mouse
.isMouse1()) {
1171 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1176 } else if (mouse
.isMouse2()) {
1177 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1182 } else if (mouse
.isMouse3()) {
1183 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1188 } else if (mouse
.isMouseWheelUp()) {
1190 } else if (mouse
.isMouseWheelDown()) {
1193 // This is motion with no buttons down.
1197 sb
.append(String
.format("%d;%d", mouse
.getX() + 1,
1200 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1207 // X10 and UTF8 encodings
1208 sb
.append((char) 0x1B);
1211 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1212 sb
.append((char) (0x03 + 32));
1213 } else if (mouse
.isMouse1()) {
1214 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1215 sb
.append((char) (0x00 + 32 + 32));
1217 sb
.append((char) (0x00 + 32));
1219 } else if (mouse
.isMouse2()) {
1220 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1221 sb
.append((char) (0x01 + 32 + 32));
1223 sb
.append((char) (0x01 + 32));
1225 } else if (mouse
.isMouse3()) {
1226 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1227 sb
.append((char) (0x02 + 32 + 32));
1229 sb
.append((char) (0x02 + 32));
1231 } else if (mouse
.isMouseWheelUp()) {
1232 sb
.append((char) (0x04 + 64));
1233 } else if (mouse
.isMouseWheelDown()) {
1234 sb
.append((char) (0x05 + 64));
1236 // This is motion with no buttons down.
1237 sb
.append((char) (0x03 + 32));
1240 sb
.append((char) (mouse
.getX() + 33));
1241 sb
.append((char) (mouse
.getY() + 33));
1244 // System.err.printf("Would write: \'%s\'\n", sb.toString());
1245 writeRemote(sb
.toString());
1249 * Translate the keyboard press to a VT100, VT220, or XTERM sequence and
1250 * send to the remote side.
1252 * @param keypress keypress received from the local user
1254 public void keypress(final TKeypress keypress
) {
1255 writeRemote(keypressToString(keypress
));
1259 * Build one of the complex xterm keystroke sequences, storing the result in
1260 * xterm_keystroke_buffer.
1262 * @param ss3 the prefix to use based on VT100 state.
1263 * @param first the first character, usually a number.
1264 * @param first the last character, one of the following: ~ A B C D F H
1265 * @param ctrl whether or not ctrl is down
1266 * @param alt whether or not alt is down
1267 * @param shift whether or not shift is down
1268 * @return the buffer with the full key sequence
1270 private String
xtermBuildKeySequence(final String ss3
, final char first
,
1271 final char last
, boolean ctrl
, boolean alt
, boolean shift
) {
1273 StringBuilder sb
= new StringBuilder(ss3
);
1274 if ((last
== '~') || (ctrl
== true) || (alt
== true)
1278 if ( (ctrl
== false) && (alt
== false) && (shift
== true)) {
1280 } else if ((ctrl
== false) && (alt
== true) && (shift
== false)) {
1282 } else if ((ctrl
== false) && (alt
== true) && (shift
== true)) {
1284 } else if ((ctrl
== true) && (alt
== false) && (shift
== false)) {
1286 } else if ((ctrl
== true) && (alt
== false) && (shift
== true)) {
1288 } else if ((ctrl
== true) && (alt
== true) && (shift
== false)) {
1290 } else if ((ctrl
== true) && (alt
== true) && (shift
== true)) {
1295 return sb
.toString();
1299 * Translate the keyboard press to a VT100, VT220, or XTERM sequence.
1301 * @param keypress keypress received from the local user
1302 * @return string to transmit to the remote side
1304 private String
keypressToString(final TKeypress keypress
) {
1306 if ((fullDuplex
== false) && (!keypress
.isFnKey())) {
1308 * If this is a control character, process it like it came from
1311 if (keypress
.getChar() < 0x20) {
1312 handleControlChar(keypress
.getChar());
1314 // Local echo for everything else
1315 printCharacter(keypress
.getChar());
1319 if ((newLineMode
== true) && (keypress
.equals(kbEnter
))) {
1324 // Handle control characters
1325 if ((keypress
.isCtrl()) && (!keypress
.isFnKey())) {
1326 StringBuilder sb
= new StringBuilder();
1327 char ch
= keypress
.getChar();
1330 return sb
.toString();
1333 // Handle alt characters
1334 if ((keypress
.isAlt()) && (!keypress
.isFnKey())) {
1335 StringBuilder sb
= new StringBuilder("\033");
1336 char ch
= keypress
.getChar();
1338 return sb
.toString();
1341 if (keypress
.equals(kbBackspace
)) {
1354 if (keypress
.equalsWithoutModifiers(kbLeft
)) {
1357 switch (arrowKeyMode
) {
1359 return xtermBuildKeySequence("\033[", '1', 'D',
1360 keypress
.isCtrl(), keypress
.isAlt(),
1361 keypress
.isShift());
1363 return xtermBuildKeySequence("\033", '1', 'D',
1364 keypress
.isCtrl(), keypress
.isAlt(),
1365 keypress
.isShift());
1367 return xtermBuildKeySequence("\033O", '1', 'D',
1368 keypress
.isCtrl(), keypress
.isAlt(),
1369 keypress
.isShift());
1372 switch (arrowKeyMode
) {
1383 if (keypress
.equalsWithoutModifiers(kbRight
)) {
1386 switch (arrowKeyMode
) {
1388 return xtermBuildKeySequence("\033[", '1', 'C',
1389 keypress
.isCtrl(), keypress
.isAlt(),
1390 keypress
.isShift());
1392 return xtermBuildKeySequence("\033", '1', 'C',
1393 keypress
.isCtrl(), keypress
.isAlt(),
1394 keypress
.isShift());
1396 return xtermBuildKeySequence("\033O", '1', 'C',
1397 keypress
.isCtrl(), keypress
.isAlt(),
1398 keypress
.isShift());
1401 switch (arrowKeyMode
) {
1412 if (keypress
.equalsWithoutModifiers(kbUp
)) {
1415 switch (arrowKeyMode
) {
1417 return xtermBuildKeySequence("\033[", '1', 'A',
1418 keypress
.isCtrl(), keypress
.isAlt(),
1419 keypress
.isShift());
1421 return xtermBuildKeySequence("\033", '1', 'A',
1422 keypress
.isCtrl(), keypress
.isAlt(),
1423 keypress
.isShift());
1425 return xtermBuildKeySequence("\033O", '1', 'A',
1426 keypress
.isCtrl(), keypress
.isAlt(),
1427 keypress
.isShift());
1430 switch (arrowKeyMode
) {
1441 if (keypress
.equalsWithoutModifiers(kbDown
)) {
1444 switch (arrowKeyMode
) {
1446 return xtermBuildKeySequence("\033[", '1', 'B',
1447 keypress
.isCtrl(), keypress
.isAlt(),
1448 keypress
.isShift());
1450 return xtermBuildKeySequence("\033", '1', 'B',
1451 keypress
.isCtrl(), keypress
.isAlt(),
1452 keypress
.isShift());
1454 return xtermBuildKeySequence("\033O", '1', 'B',
1455 keypress
.isCtrl(), keypress
.isAlt(),
1456 keypress
.isShift());
1459 switch (arrowKeyMode
) {
1470 if (keypress
.equalsWithoutModifiers(kbHome
)) {
1473 switch (arrowKeyMode
) {
1475 return xtermBuildKeySequence("\033[", '1', 'H',
1476 keypress
.isCtrl(), keypress
.isAlt(),
1477 keypress
.isShift());
1479 return xtermBuildKeySequence("\033", '1', 'H',
1480 keypress
.isCtrl(), keypress
.isAlt(),
1481 keypress
.isShift());
1483 return xtermBuildKeySequence("\033O", '1', 'H',
1484 keypress
.isCtrl(), keypress
.isAlt(),
1485 keypress
.isShift());
1488 switch (arrowKeyMode
) {
1499 if (keypress
.equalsWithoutModifiers(kbEnd
)) {
1502 switch (arrowKeyMode
) {
1504 return xtermBuildKeySequence("\033[", '1', 'F',
1505 keypress
.isCtrl(), keypress
.isAlt(),
1506 keypress
.isShift());
1508 return xtermBuildKeySequence("\033", '1', 'F',
1509 keypress
.isCtrl(), keypress
.isAlt(),
1510 keypress
.isShift());
1512 return xtermBuildKeySequence("\033O", '1', 'F',
1513 keypress
.isCtrl(), keypress
.isAlt(),
1514 keypress
.isShift());
1517 switch (arrowKeyMode
) {
1528 if (keypress
.equals(kbF1
)) {
1536 if (keypress
.equals(kbF2
)) {
1544 if (keypress
.equals(kbF3
)) {
1552 if (keypress
.equals(kbF4
)) {
1560 if (keypress
.equals(kbF5
)) {
1573 if (keypress
.equals(kbF6
)) {
1586 if (keypress
.equals(kbF7
)) {
1599 if (keypress
.equals(kbF8
)) {
1612 if (keypress
.equals(kbF9
)) {
1625 if (keypress
.equals(kbF10
)) {
1638 if (keypress
.equals(kbF11
)) {
1642 if (keypress
.equals(kbF12
)) {
1646 if (keypress
.equals(kbShiftF1
)) {
1651 if (type
== DeviceType
.XTERM
) {
1657 if (keypress
.equals(kbShiftF2
)) {
1662 if (type
== DeviceType
.XTERM
) {
1668 if (keypress
.equals(kbShiftF3
)) {
1673 if (type
== DeviceType
.XTERM
) {
1679 if (keypress
.equals(kbShiftF4
)) {
1684 if (type
== DeviceType
.XTERM
) {
1690 if (keypress
.equals(kbShiftF5
)) {
1692 return "\033[15;2~";
1695 if (keypress
.equals(kbShiftF6
)) {
1697 return "\033[17;2~";
1700 if (keypress
.equals(kbShiftF7
)) {
1702 return "\033[18;2~";
1705 if (keypress
.equals(kbShiftF8
)) {
1707 return "\033[19;2~";
1710 if (keypress
.equals(kbShiftF9
)) {
1712 return "\033[20;2~";
1715 if (keypress
.equals(kbShiftF10
)) {
1717 return "\033[21;2~";
1720 if (keypress
.equals(kbShiftF11
)) {
1722 return "\033[23;2~";
1725 if (keypress
.equals(kbShiftF12
)) {
1727 return "\033[24;2~";
1730 if (keypress
.equals(kbCtrlF1
)) {
1735 if (type
== DeviceType
.XTERM
) {
1741 if (keypress
.equals(kbCtrlF2
)) {
1746 if (type
== DeviceType
.XTERM
) {
1752 if (keypress
.equals(kbCtrlF3
)) {
1757 if (type
== DeviceType
.XTERM
) {
1763 if (keypress
.equals(kbCtrlF4
)) {
1768 if (type
== DeviceType
.XTERM
) {
1774 if (keypress
.equals(kbCtrlF5
)) {
1776 return "\033[15;5~";
1779 if (keypress
.equals(kbCtrlF6
)) {
1781 return "\033[17;5~";
1784 if (keypress
.equals(kbCtrlF7
)) {
1786 return "\033[18;5~";
1789 if (keypress
.equals(kbCtrlF8
)) {
1791 return "\033[19;5~";
1794 if (keypress
.equals(kbCtrlF9
)) {
1796 return "\033[20;5~";
1799 if (keypress
.equals(kbCtrlF10
)) {
1801 return "\033[21;5~";
1804 if (keypress
.equals(kbCtrlF11
)) {
1806 return "\033[23;5~";
1809 if (keypress
.equals(kbCtrlF12
)) {
1811 return "\033[24;5~";
1814 if (keypress
.equalsWithoutModifiers(kbPgUp
)) {
1817 switch (arrowKeyMode
) {
1819 return xtermBuildKeySequence("\033[", '5', '~',
1820 keypress
.isCtrl(), keypress
.isAlt(),
1821 keypress
.isShift());
1823 return xtermBuildKeySequence("\033", '5', '~',
1824 keypress
.isCtrl(), keypress
.isAlt(),
1825 keypress
.isShift());
1827 return xtermBuildKeySequence("\033O", '5', '~',
1828 keypress
.isCtrl(), keypress
.isAlt(),
1829 keypress
.isShift());
1836 if (keypress
.equalsWithoutModifiers(kbPgDn
)) {
1839 switch (arrowKeyMode
) {
1841 return xtermBuildKeySequence("\033[", '6', '~',
1842 keypress
.isCtrl(), keypress
.isAlt(),
1843 keypress
.isShift());
1845 return xtermBuildKeySequence("\033", '6', '~',
1846 keypress
.isCtrl(), keypress
.isAlt(),
1847 keypress
.isShift());
1849 return xtermBuildKeySequence("\033O", '6', '~',
1850 keypress
.isCtrl(), keypress
.isAlt(),
1851 keypress
.isShift());
1858 if (keypress
.equalsWithoutModifiers(kbIns
)) {
1861 switch (arrowKeyMode
) {
1863 return xtermBuildKeySequence("\033[", '2', '~',
1864 keypress
.isCtrl(), keypress
.isAlt(),
1865 keypress
.isShift());
1867 return xtermBuildKeySequence("\033", '2', '~',
1868 keypress
.isCtrl(), keypress
.isAlt(),
1869 keypress
.isShift());
1871 return xtermBuildKeySequence("\033O", '2', '~',
1872 keypress
.isCtrl(), keypress
.isAlt(),
1873 keypress
.isShift());
1880 if (keypress
.equalsWithoutModifiers(kbDel
)) {
1883 switch (arrowKeyMode
) {
1885 return xtermBuildKeySequence("\033[", '3', '~',
1886 keypress
.isCtrl(), keypress
.isAlt(),
1887 keypress
.isShift());
1889 return xtermBuildKeySequence("\033", '3', '~',
1890 keypress
.isCtrl(), keypress
.isAlt(),
1891 keypress
.isShift());
1893 return xtermBuildKeySequence("\033O", '3', '~',
1894 keypress
.isCtrl(), keypress
.isAlt(),
1895 keypress
.isShift());
1898 // Delete sends real delete for VTxxx
1903 if (keypress
.equals(kbEnter
)) {
1907 if (keypress
.equals(kbEsc
)) {
1911 if (keypress
.equals(kbAltEsc
)) {
1915 if (keypress
.equals(kbTab
)) {
1919 if ((keypress
.equalsWithoutModifiers(kbBackTab
)) ||
1920 (keypress
.equals(kbShiftTab
))
1930 // Non-alt, non-ctrl characters
1931 if (!keypress
.isFnKey()) {
1932 StringBuilder sb
= new StringBuilder();
1933 sb
.append(keypress
.getChar());
1934 return sb
.toString();
1940 * Map a symbol in any one of the VT100/VT220 character sets to a Unicode
1943 * @param ch 8-bit character from the remote side
1944 * @param charsetGl character set defined for GL
1945 * @param charsetGr character set defined for GR
1946 * @return character to display on the screen
1948 private char mapCharacterCharset(final char ch
,
1949 final CharacterSet charsetGl
,
1950 final CharacterSet charsetGr
) {
1952 int lookupChar
= ch
;
1953 CharacterSet lookupCharset
= charsetGl
;
1956 assert ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
));
1957 lookupCharset
= charsetGr
;
1961 switch (lookupCharset
) {
1964 return DECCharacterSets
.SPECIAL_GRAPHICS
[lookupChar
];
1967 return DECCharacterSets
.UK
[lookupChar
];
1970 return DECCharacterSets
.US_ASCII
[lookupChar
];
1973 return DECCharacterSets
.NL
[lookupChar
];
1976 return DECCharacterSets
.FI
[lookupChar
];
1979 return DECCharacterSets
.FR
[lookupChar
];
1982 return DECCharacterSets
.FR_CA
[lookupChar
];
1985 return DECCharacterSets
.DE
[lookupChar
];
1988 return DECCharacterSets
.IT
[lookupChar
];
1991 return DECCharacterSets
.NO
[lookupChar
];
1994 return DECCharacterSets
.ES
[lookupChar
];
1997 return DECCharacterSets
.SV
[lookupChar
];
2000 return DECCharacterSets
.SWISS
[lookupChar
];
2002 case DEC_SUPPLEMENTAL
:
2003 return DECCharacterSets
.DEC_SUPPLEMENTAL
[lookupChar
];
2006 return DECCharacterSets
.VT52_SPECIAL_GRAPHICS
[lookupChar
];
2009 return DECCharacterSets
.US_ASCII
[lookupChar
];
2012 return DECCharacterSets
.US_ASCII
[lookupChar
];
2015 throw new IllegalArgumentException("Invalid character set value: "
2021 * Map an 8-bit byte into a printable character.
2023 * @param ch either 8-bit or Unicode character from the remote side
2024 * @return character to display on the screen
2026 private char mapCharacter(final char ch
) {
2028 // Unicode character, just return it
2032 CharacterSet charsetGl
= currentState
.g0Charset
;
2033 CharacterSet charsetGr
= currentState
.grCharset
;
2035 if (vt52Mode
== true) {
2036 if (shiftOut
== true) {
2037 // Shifted out character, pull from VT52 graphics
2038 charsetGl
= currentState
.g1Charset
;
2039 charsetGr
= CharacterSet
.US
;
2042 charsetGl
= currentState
.g0Charset
;
2043 charsetGr
= CharacterSet
.US
;
2046 // Pull the character
2047 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2051 if (shiftOut
== true) {
2052 // Shifted out character, pull from G1
2053 charsetGl
= currentState
.g1Charset
;
2054 charsetGr
= currentState
.grCharset
;
2056 // Pull the character
2057 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2061 if (singleshift
== Singleshift
.SS2
) {
2063 singleshift
= Singleshift
.NONE
;
2065 // Shifted out character, pull from G2
2066 charsetGl
= currentState
.g2Charset
;
2067 charsetGr
= currentState
.grCharset
;
2071 if (singleshift
== Singleshift
.SS3
) {
2073 singleshift
= Singleshift
.NONE
;
2075 // Shifted out character, pull from G3
2076 charsetGl
= currentState
.g3Charset
;
2077 charsetGr
= currentState
.grCharset
;
2080 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2081 // Check for locking shift
2083 switch (currentState
.glLockshift
) {
2096 charsetGl
= currentState
.g2Charset
;
2101 charsetGl
= currentState
.g3Charset
;
2106 charsetGl
= currentState
.g0Charset
;
2110 switch (currentState
.grLockshift
) {
2120 charsetGr
= currentState
.g1Charset
;
2125 charsetGr
= currentState
.g2Charset
;
2130 charsetGr
= currentState
.g3Charset
;
2135 charsetGr
= CharacterSet
.DEC_SUPPLEMENTAL
;
2142 // Pull the character
2143 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2147 * Scroll the text within a scrolling region up n lines.
2149 * @param regionTop top row of the scrolling region
2150 * @param regionBottom bottom row of the scrolling region
2151 * @param n number of lines to scroll
2153 private void scrollingRegionScrollUp(final int regionTop
,
2154 final int regionBottom
, final int n
) {
2156 if (regionTop
>= regionBottom
) {
2160 // Sanity check: see if there will be any characters left after the
2162 if (regionBottom
+ 1 - regionTop
<= n
) {
2163 // There won't be anything left in the region, so just call
2164 // eraseScreen() and return.
2165 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2169 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2170 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2171 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2173 List
<DisplayLine
> displayMiddle
= display
.subList(regionBottom
+ 1
2174 - remaining
, regionBottom
+ 1);
2175 display
= new LinkedList
<DisplayLine
>(displayTop
);
2176 display
.addAll(displayMiddle
);
2177 for (int i
= 0; i
< n
; i
++) {
2178 DisplayLine line
= new DisplayLine(currentState
.attr
);
2179 line
.setReverseColor(reverseVideo
);
2182 display
.addAll(displayBottom
);
2184 assert (display
.size() == height
);
2188 * Scroll the text within a scrolling region down n lines.
2190 * @param regionTop top row of the scrolling region
2191 * @param regionBottom bottom row of the scrolling region
2192 * @param n number of lines to scroll
2194 private void scrollingRegionScrollDown(final int regionTop
,
2195 final int regionBottom
, final int n
) {
2197 if (regionTop
>= regionBottom
) {
2201 // Sanity check: see if there will be any characters left after the
2203 if (regionBottom
+ 1 - regionTop
<= n
) {
2204 // There won't be anything left in the region, so just call
2205 // eraseScreen() and return.
2206 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2210 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2211 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2212 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2214 List
<DisplayLine
> displayMiddle
= display
.subList(regionTop
,
2215 regionTop
+ remaining
);
2216 display
= new LinkedList
<DisplayLine
>(displayTop
);
2217 for (int i
= 0; i
< n
; i
++) {
2218 DisplayLine line
= new DisplayLine(currentState
.attr
);
2219 line
.setReverseColor(reverseVideo
);
2222 display
.addAll(displayMiddle
);
2223 display
.addAll(displayBottom
);
2225 assert (display
.size() == height
);
2229 * Process a control character.
2231 * @param ch 8-bit character from the remote side
2233 private void handleControlChar(final char ch
) {
2234 assert ((ch
<= 0x1F) || ((ch
>= 0x7F) && (ch
<= 0x9F)));
2245 // Transmit the answerback message.
2256 cursorLeft(1, false);
2261 advanceToNextTabStop();
2287 currentState
.glLockshift
= LockshiftMode
.NONE
;
2293 currentState
.glLockshift
= LockshiftMode
.NONE
;
2318 singleshift
= Singleshift
.SS2
;
2323 singleshift
= Singleshift
.SS3
;
2333 * Advance the cursor to the next tab stop.
2335 private void advanceToNextTabStop() {
2336 if (tabStops
.size() == 0) {
2337 // Go to the rightmost column
2338 cursorRight(rightMargin
- currentState
.cursorX
, false);
2341 for (Integer stop
: tabStops
) {
2342 if (stop
> currentState
.cursorX
) {
2343 cursorRight(stop
- currentState
.cursorX
, false);
2348 * We got here, meaning there isn't a tab stop beyond the current
2349 * cursor position. Place the cursor of the right-most edge of the
2352 cursorRight(rightMargin
- currentState
.cursorX
, false);
2356 * Save a character into the collect buffer.
2358 * @param ch character to save
2360 private void collect(final char ch
) {
2361 collectBuffer
.append(ch
);
2365 * Save a byte into the CSI parameters buffer.
2367 * @param ch byte to save
2369 private void param(final byte ch
) {
2370 if (csiParams
.size() == 0) {
2371 csiParams
.add(new Integer(0));
2373 Integer x
= csiParams
.get(csiParams
.size() - 1);
2374 if ((ch
>= '0') && (ch
<= '9')) {
2377 csiParams
.set(csiParams
.size() - 1, x
);
2381 csiParams
.add(new Integer(0));
2386 * Get a CSI parameter value, with a default.
2388 * @param position parameter index. 0 is the first parameter.
2389 * @param defaultValue value to use if csiParams[position] doesn't exist
2390 * @return parameter value
2392 private int getCsiParam(final int position
, final int defaultValue
) {
2393 if (csiParams
.size() < position
+ 1) {
2394 return defaultValue
;
2396 return csiParams
.get(position
).intValue();
2400 * Get a CSI parameter value, clamped to within min/max.
2402 * @param position parameter index. 0 is the first parameter.
2403 * @param defaultValue value to use if csiParams[position] doesn't exist
2404 * @param minValue minimum value inclusive
2405 * @param maxValue maximum value inclusive
2406 * @return parameter value
2408 private int getCsiParam(final int position
, final int defaultValue
,
2409 final int minValue
, final int maxValue
) {
2411 assert (minValue
<= maxValue
);
2412 int value
= getCsiParam(position
, defaultValue
);
2413 if (value
< minValue
) {
2416 if (value
> maxValue
) {
2423 * Set or unset a toggle.
2425 * @param value true for set ('h'), false for reset ('l')
2427 private void setToggle(final boolean value
) {
2428 boolean decPrivateModeFlag
= false;
2429 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2430 if (collectBuffer
.charAt(i
) == '?') {
2431 decPrivateModeFlag
= true;
2436 for (Integer i
: csiParams
) {
2441 if (decPrivateModeFlag
== true) {
2443 if (value
== true) {
2444 // Use application arrow keys
2445 arrowKeyMode
= ArrowKeyMode
.VT100
;
2447 // Use ANSI arrow keys
2448 arrowKeyMode
= ArrowKeyMode
.ANSI
;
2453 if (decPrivateModeFlag
== true) {
2454 if (value
== false) {
2458 arrowKeyMode
= ArrowKeyMode
.VT52
;
2461 * From the VT102 docs: "You use ANSI mode to select
2462 * most terminal features; the terminal uses the same
2463 * features when it switches to VT52 mode. You
2464 * cannot, however, change most of these features in
2467 * In other words, do not reset any other attributes
2468 * when switching between VT52 submode and ANSI.
2470 * HOWEVER, the real vt100 does switch the character
2471 * set according to Usenet.
2473 currentState
.g0Charset
= CharacterSet
.US
;
2474 currentState
.g1Charset
= CharacterSet
.DRAWING
;
2477 if ((type
== DeviceType
.VT220
)
2478 || (type
== DeviceType
.XTERM
)) {
2480 // VT52 mode is explicitly 7-bit
2482 singleshift
= Singleshift
.NONE
;
2487 if (value
== true) {
2488 // Turn off keyboard
2497 if (decPrivateModeFlag
== true) {
2499 if (value
== true) {
2508 width
= rightMargin
+ 1;
2509 // Entire screen is cleared, and scrolling region is
2511 eraseScreen(0, 0, height
- 1, width
- 1, false);
2512 scrollRegionTop
= 0;
2513 scrollRegionBottom
= height
- 1;
2514 // Also home the cursor
2515 cursorPosition(0, 0);
2519 if (decPrivateModeFlag
== true) {
2521 if (value
== true) {
2530 if (value
== true) {
2538 if (decPrivateModeFlag
== true) {
2540 if (value
== true) {
2542 * Set selects reverse screen, a white screen
2543 * background with black characters.
2545 if (reverseVideo
!= true) {
2547 * If in normal video, switch it back
2549 invertDisplayColors();
2551 reverseVideo
= true;
2554 * Reset selects normal screen, a black screen
2555 * background with white characters.
2557 if (reverseVideo
== true) {
2559 * If in reverse video already, switch it back
2561 invertDisplayColors();
2563 reverseVideo
= false;
2568 if (decPrivateModeFlag
== true) {
2570 if (value
== true) {
2571 // Origin is relative to scroll region cursor.
2572 // Cursor can NEVER leave scrolling region.
2573 currentState
.originMode
= true;
2574 cursorPosition(0, 0);
2576 // Origin is absolute to entire screen. Cursor can
2577 // leave the scrolling region via cup() and hvp().
2578 currentState
.originMode
= false;
2579 cursorPosition(0, 0);
2584 if (decPrivateModeFlag
== true) {
2586 if (value
== true) {
2588 currentState
.lineWrap
= true;
2590 // Turn linewrap off
2591 currentState
.lineWrap
= false;
2596 if (decPrivateModeFlag
== true) {
2598 if (value
== true) {
2599 // Keyboard auto-repeat on
2602 // Keyboard auto-repeat off
2608 if (decPrivateModeFlag
== false) {
2610 if (value
== true) {
2620 if (decPrivateModeFlag
== true) {
2626 if (decPrivateModeFlag
== true) {
2632 if (decPrivateModeFlag
== false) {
2634 if (value
== true) {
2636 * Set causes a received linefeed, form feed, or
2637 * vertical tab to move cursor to first column of
2638 * next line. RETURN transmits both a carriage return
2639 * and linefeed. This selection is also called new
2645 * Reset causes a received linefeed, form feed, or
2646 * vertical tab to move cursor to next line in
2647 * current column. RETURN transmits a carriage
2650 newLineMode
= false;
2656 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2657 if (decPrivateModeFlag
== true) {
2659 if (value
== true) {
2661 cursorVisible
= true;
2664 cursorVisible
= false;
2671 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2672 if (decPrivateModeFlag
== true) {
2674 if (value
== true) {
2675 // Select national mode NRC
2678 // Select multi-national mode
2687 if ((type
== DeviceType
.XTERM
)
2688 && (decPrivateModeFlag
== true)
2690 // Mouse: normal tracking mode
2691 if (value
== true) {
2692 mouseProtocol
= MouseProtocol
.NORMAL
;
2694 mouseProtocol
= MouseProtocol
.OFF
;
2700 if ((type
== DeviceType
.XTERM
)
2701 && (decPrivateModeFlag
== true)
2703 // Mouse: normal tracking mode
2704 if (value
== true) {
2705 mouseProtocol
= MouseProtocol
.BUTTONEVENT
;
2707 mouseProtocol
= MouseProtocol
.OFF
;
2713 if ((type
== DeviceType
.XTERM
)
2714 && (decPrivateModeFlag
== true)
2716 // Mouse: Any-event tracking mode
2717 if (value
== true) {
2718 mouseProtocol
= MouseProtocol
.ANYEVENT
;
2720 mouseProtocol
= MouseProtocol
.OFF
;
2726 if ((type
== DeviceType
.XTERM
)
2727 && (decPrivateModeFlag
== true)
2729 // Mouse: UTF-8 coordinates
2730 if (value
== true) {
2731 mouseEncoding
= MouseEncoding
.UTF8
;
2733 mouseEncoding
= MouseEncoding
.X10
;
2739 if ((type
== DeviceType
.XTERM
)
2740 && (decPrivateModeFlag
== true)
2742 // Mouse: SGR coordinates
2743 if (value
== true) {
2744 mouseEncoding
= MouseEncoding
.SGR
;
2746 mouseEncoding
= MouseEncoding
.X10
;
2759 * DECSC - Save cursor.
2761 private void decsc() {
2762 savedState
.setTo(currentState
);
2766 * DECRC - Restore cursor.
2768 private void decrc() {
2769 currentState
.setTo(savedState
);
2775 private void ind() {
2776 // Move the cursor and scroll if necessary. If at the bottom line
2777 // already, a scroll up is supposed to be performed.
2778 if (currentState
.cursorY
== scrollRegionBottom
) {
2779 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
2781 cursorDown(1, true);
2785 * RI - Reverse index.
2788 // Move the cursor and scroll if necessary. If at the top line
2789 // already, a scroll down is supposed to be performed.
2790 if (currentState
.cursorY
== scrollRegionTop
) {
2791 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
, 1);
2799 private void nel() {
2800 // Move the cursor and scroll if necessary. If at the bottom line
2801 // already, a scroll up is supposed to be performed.
2802 if (currentState
.cursorY
== scrollRegionBottom
) {
2803 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
2805 cursorDown(1, true);
2807 // Reset to the beginning of the next line
2808 currentState
.cursorX
= 0;
2812 * DECKPAM - Keypad application mode.
2814 private void deckpam() {
2815 keypadMode
= KeypadMode
.Application
;
2819 * DECKPNM - Keypad numeric mode.
2821 private void deckpnm() {
2822 keypadMode
= KeypadMode
.Numeric
;
2828 * @param n number of spaces to move
2829 * @param honorScrollRegion if true, then do nothing if the cursor is
2830 * outside the scrolling region
2832 private void cursorUp(final int n
, final boolean honorScrollRegion
) {
2836 * Special case: if a user moves the cursor from the right margin, we
2837 * have to reset the VT100 right margin flag.
2840 wrapLineFlag
= false;
2843 for (int i
= 0; i
< n
; i
++) {
2844 if (honorScrollRegion
== true) {
2845 // Honor the scrolling region
2846 if ((currentState
.cursorY
< scrollRegionTop
)
2847 || (currentState
.cursorY
> scrollRegionBottom
)
2849 // Outside region, do nothing
2852 // Inside region, go up
2853 top
= scrollRegionTop
;
2855 // Non-scrolling case
2859 if (currentState
.cursorY
> top
) {
2860 currentState
.cursorY
--;
2866 * Move down n spaces.
2868 * @param n number of spaces to move
2869 * @param honorScrollRegion if true, then do nothing if the cursor is
2870 * outside the scrolling region
2872 private void cursorDown(final int n
, final boolean honorScrollRegion
) {
2876 * Special case: if a user moves the cursor from the right margin, we
2877 * have to reset the VT100 right margin flag.
2880 wrapLineFlag
= false;
2883 for (int i
= 0; i
< n
; i
++) {
2885 if (honorScrollRegion
== true) {
2886 // Honor the scrolling region
2887 if (currentState
.cursorY
> scrollRegionBottom
) {
2888 // Outside region, do nothing
2891 // Inside region, go down
2892 bottom
= scrollRegionBottom
;
2894 // Non-scrolling case
2895 bottom
= height
- 1;
2898 if (currentState
.cursorY
< bottom
) {
2899 currentState
.cursorY
++;
2905 * Move left n spaces.
2907 * @param n number of spaces to move
2908 * @param honorScrollRegion if true, then do nothing if the cursor is
2909 * outside the scrolling region
2911 private void cursorLeft(final int n
, final boolean honorScrollRegion
) {
2913 * Special case: if a user moves the cursor from the right margin, we
2914 * have to reset the VT100 right margin flag.
2917 wrapLineFlag
= false;
2920 for (int i
= 0; i
< n
; i
++) {
2921 if (honorScrollRegion
== true) {
2922 // Honor the scrolling region
2923 if ((currentState
.cursorY
< scrollRegionTop
)
2924 || (currentState
.cursorY
> scrollRegionBottom
)
2926 // Outside region, do nothing
2931 if (currentState
.cursorX
> 0) {
2932 currentState
.cursorX
--;
2938 * Move right n spaces.
2940 * @param n number of spaces to move
2941 * @param honorScrollRegion if true, then do nothing if the cursor is
2942 * outside the scrolling region
2944 private void cursorRight(final int n
, final boolean honorScrollRegion
) {
2945 int rightMargin
= this.rightMargin
;
2948 * Special case: if a user moves the cursor from the right margin, we
2949 * have to reset the VT100 right margin flag.
2952 wrapLineFlag
= false;
2955 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
2956 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
2959 for (int i
= 0; i
< n
; i
++) {
2960 if (honorScrollRegion
== true) {
2961 // Honor the scrolling region
2962 if ((currentState
.cursorY
< scrollRegionTop
)
2963 || (currentState
.cursorY
> scrollRegionBottom
)
2965 // Outside region, do nothing
2970 if (currentState
.cursorX
< rightMargin
) {
2971 currentState
.cursorX
++;
2977 * Move cursor to (col, row) where (0, 0) is the top-left corner.
2979 * @param row row to move to
2980 * @param col column to move to
2982 private void cursorPosition(int row
, final int col
) {
2983 int rightMargin
= this.rightMargin
;
2988 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
2989 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
2992 // Set column number
2993 currentState
.cursorX
= col
;
2995 // Sanity check, bring column back to margin.
2996 if (currentState
.cursorX
> rightMargin
) {
2997 currentState
.cursorX
= rightMargin
;
3001 if (currentState
.originMode
== true) {
3002 row
+= scrollRegionTop
;
3004 if (currentState
.cursorY
< row
) {
3005 cursorDown(row
- currentState
.cursorY
, false);
3006 } else if (currentState
.cursorY
> row
) {
3007 cursorUp(currentState
.cursorY
- row
, false);
3010 wrapLineFlag
= false;
3014 * HTS - Horizontal tabulation set.
3016 private void hts() {
3017 for (Integer stop
: tabStops
) {
3018 if (stop
== currentState
.cursorX
) {
3019 // Already have a tab stop here
3024 // Append a tab stop to the end of the array and resort them
3025 tabStops
.add(currentState
.cursorX
);
3026 Collections
.sort(tabStops
);
3030 * DECSWL - Single-width line.
3032 private void decswl() {
3033 display
.get(currentState
.cursorY
).setDoubleWidth(false);
3034 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3038 * DECDWL - Double-width line.
3040 private void decdwl() {
3041 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3042 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3046 * DECHDL - Double-height + double-width line.
3048 * @param topHalf if true, this sets the row to be the top half row of a
3051 private void dechdl(final boolean topHalf
) {
3052 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3053 if (topHalf
== true) {
3054 display
.get(currentState
.cursorY
).setDoubleHeight(1);
3056 display
.get(currentState
.cursorY
).setDoubleHeight(2);
3061 * DECALN - Screen alignment display.
3063 private void decaln() {
3064 Cell newCell
= new Cell();
3065 newCell
.setChar('E');
3066 for (DisplayLine line
: display
) {
3067 for (int i
= 0; i
< line
.length(); i
++) {
3068 line
.replace(i
, newCell
);
3074 * DECSCL - Compatibility level.
3076 private void decscl() {
3077 int i
= getCsiParam(0, 0);
3078 int j
= getCsiParam(1, 0);
3082 currentState
.g0Charset
= CharacterSet
.US
;
3083 currentState
.g1Charset
= CharacterSet
.DRAWING
;
3085 } else if (i
== 62) {
3087 if ((j
== 0) || (j
== 2)) {
3089 } else if (j
== 1) {
3096 * CUD - Cursor down.
3098 private void cud() {
3099 cursorDown(getCsiParam(0, 1, 1, height
), true);
3103 * CUF - Cursor forward.
3105 private void cuf() {
3106 cursorRight(getCsiParam(0, 1, 1, rightMargin
+ 1), true);
3110 * CUB - Cursor backward.
3112 private void cub() {
3113 cursorLeft(getCsiParam(0, 1, 1, currentState
.cursorX
+ 1), true);
3119 private void cuu() {
3120 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3124 * CUP - Cursor position.
3126 private void cup() {
3127 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3128 getCsiParam(1, 1, 1, rightMargin
+ 1) - 1);
3132 * CNL - Cursor down and to column 1.
3134 private void cnl() {
3135 cursorDown(getCsiParam(0, 1, 1, height
), true);
3137 cursorLeft(currentState
.cursorX
, true);
3141 * CPL - Cursor up and to column 1.
3143 private void cpl() {
3144 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3146 cursorLeft(currentState
.cursorX
, true);
3150 * CHA - Cursor to column # in current row.
3152 private void cha() {
3153 cursorPosition(currentState
.cursorY
,
3154 getCsiParam(0, 1, 1, rightMargin
+ 1) - 1);
3158 * VPA - Cursor to row #, same column.
3160 private void vpa() {
3161 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3162 currentState
.cursorX
);
3166 * ED - Erase in display.
3169 boolean honorProtected
= false;
3170 boolean decPrivateModeFlag
= false;
3172 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3173 if (collectBuffer
.charAt(i
) == '?') {
3174 decPrivateModeFlag
= true;
3179 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3180 && (decPrivateModeFlag
== true)
3182 honorProtected
= true;
3185 int i
= getCsiParam(0, 0);
3188 // Erase from here to end of screen
3189 if (currentState
.cursorY
< height
- 1) {
3190 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1, width
- 1,
3193 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3194 } else if (i
== 1) {
3195 // Erase from beginning of screen to here
3196 eraseScreen(0, 0, currentState
.cursorY
- 1, width
- 1,
3198 eraseLine(0, currentState
.cursorX
, honorProtected
);
3199 } else if (i
== 2) {
3200 // Erase entire screen
3201 eraseScreen(0, 0, height
- 1, width
- 1, honorProtected
);
3206 * EL - Erase in line.
3209 boolean honorProtected
= false;
3210 boolean decPrivateModeFlag
= false;
3212 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3213 if (collectBuffer
.charAt(i
) == '?') {
3214 decPrivateModeFlag
= true;
3219 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3220 && (decPrivateModeFlag
== true)
3222 honorProtected
= true;
3225 int i
= getCsiParam(0, 0);
3228 // Erase from here to end of line
3229 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3230 } else if (i
== 1) {
3231 // Erase from beginning of line to here
3232 eraseLine(0, currentState
.cursorX
, honorProtected
);
3233 } else if (i
== 2) {
3234 // Erase entire line
3235 eraseLine(0, width
- 1, honorProtected
);
3240 * ECH - Erase # of characters in current row.
3242 private void ech() {
3243 int i
= getCsiParam(0, 1, 1, width
);
3245 // Erase from here to i characters
3246 eraseLine(currentState
.cursorX
, currentState
.cursorX
+ i
- 1, false);
3253 int i
= getCsiParam(0, 1);
3255 if ((currentState
.cursorY
>= scrollRegionTop
)
3256 && (currentState
.cursorY
<= scrollRegionBottom
)
3259 // I can get the same effect with a scroll-down
3260 scrollingRegionScrollDown(currentState
.cursorY
,
3261 scrollRegionBottom
, i
);
3266 * DCH - Delete char.
3268 private void dch() {
3269 int n
= getCsiParam(0, 1);
3270 DisplayLine line
= display
.get(currentState
.cursorY
);
3271 Cell blank
= new Cell();
3272 for (int i
= 0; i
< n
; i
++) {
3273 line
.delete(currentState
.cursorX
, blank
);
3278 * ICH - Insert blank char at cursor.
3280 private void ich() {
3281 int n
= getCsiParam(0, 1);
3282 DisplayLine line
= display
.get(currentState
.cursorY
);
3283 Cell blank
= new Cell();
3284 for (int i
= 0; i
< n
; i
++) {
3285 line
.insert(currentState
.cursorX
, blank
);
3293 int i
= getCsiParam(0, 1);
3295 if ((currentState
.cursorY
>= scrollRegionTop
)
3296 && (currentState
.cursorY
<= scrollRegionBottom
)) {
3298 // I can get the same effect with a scroll-down
3299 scrollingRegionScrollUp(currentState
.cursorY
,
3300 scrollRegionBottom
, i
);
3305 * HVP - Horizontal and vertical position.
3307 private void hvp() {
3312 * REP - Repeat character.
3314 private void rep() {
3315 int n
= getCsiParam(0, 1);
3316 for (int i
= 0; i
< n
; i
++) {
3317 printCharacter(repCh
);
3325 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
,
3326 getCsiParam(0, 1, 1, height
));
3333 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
,
3334 getCsiParam(0, 1, 1, height
));
3338 * CBT - Go back X tab stops.
3340 private void cbt() {
3341 int tabsToMove
= getCsiParam(0, 1);
3344 for (int i
= 0; i
< tabsToMove
; i
++) {
3345 int j
= currentState
.cursorX
;
3346 for (tabI
= 0; tabI
< tabStops
.size(); tabI
++) {
3347 if (tabStops
.get(tabI
) >= currentState
.cursorX
) {
3355 j
= tabStops
.get(tabI
);
3357 cursorPosition(currentState
.cursorY
, j
);
3362 * CHT - Advance X tab stops.
3364 private void cht() {
3365 int n
= getCsiParam(0, 1);
3366 for (int i
= 0; i
< n
; i
++) {
3367 advanceToNextTabStop();
3372 * SGR - Select graphics rendition.
3374 private void sgr() {
3376 if (csiParams
.size() == 0) {
3377 currentState
.attr
.reset();
3381 for (Integer i
: csiParams
) {
3387 currentState
.attr
.reset();
3392 currentState
.attr
.setBold(true);
3397 currentState
.attr
.setUnderline(true);
3402 currentState
.attr
.setBlink(true);
3407 currentState
.attr
.setReverse(true);
3414 if (type
== DeviceType
.XTERM
) {
3428 if ((type
== DeviceType
.VT220
)
3429 || (type
== DeviceType
.XTERM
)) {
3435 currentState
.attr
.setBold(false);
3440 currentState
.attr
.setUnderline(false);
3445 currentState
.attr
.setBlink(false);
3450 currentState
.attr
.setReverse(false);
3458 // A true VT100/102/220 does not support color, however everyone
3459 // is used to their terminal emulator supporting color so we will
3460 // unconditionally support color for all DeviceType's.
3465 // Set black foreground
3466 currentState
.attr
.setForeColor(Color
.BLACK
);
3469 // Set red foreground
3470 currentState
.attr
.setForeColor(Color
.RED
);
3473 // Set green foreground
3474 currentState
.attr
.setForeColor(Color
.GREEN
);
3477 // Set yellow foreground
3478 currentState
.attr
.setForeColor(Color
.YELLOW
);
3481 // Set blue foreground
3482 currentState
.attr
.setForeColor(Color
.BLUE
);
3485 // Set magenta foreground
3486 currentState
.attr
.setForeColor(Color
.MAGENTA
);
3489 // Set cyan foreground
3490 currentState
.attr
.setForeColor(Color
.CYAN
);
3493 // Set white foreground
3494 currentState
.attr
.setForeColor(Color
.WHITE
);
3497 if (type
== DeviceType
.XTERM
) {
3499 * Xterm supports T.416 / ISO-8613-3 codes to select
3500 * either an indexed color or an RGB value. (It also
3501 * permits these ISO-8613-3 SGR sequences to be separated
3502 * by colons rather than semicolons.)
3504 * We will not support any of these additional color
3505 * codes at this time:
3507 * 1. http://invisible-island.net/ncurses/ncurses.faq.html#xterm_16MegaColors
3508 * has a detailed discussion of the current state of
3509 * RGB in various terminals, the point of which is
3510 * that none of them really do the same thing despite
3511 * all appearing to be "xterm".
3514 * https://bugs.kde.org/show_bug.cgi?id=107487#c3,
3515 * even supporting just the "indexed mode" of these
3516 * sequences (which could align easily with existing
3517 * SGR colors) is assumed to mean full support of
3518 * 24-bit RGB. So it is all or nothing.
3520 * Finally, these sequences break the assumptions of
3521 * standard ECMA-48 style parsers as pointed out at
3522 * https://bugs.kde.org/show_bug.cgi?id=107487#c11 .
3523 * Therefore in order to keep a clean display, we cannot
3524 * parse anything else in this sequence.
3528 // Underscore on, default foreground color
3529 currentState
.attr
.setUnderline(true);
3530 currentState
.attr
.setForeColor(Color
.WHITE
);
3534 // Underscore off, default foreground color
3535 currentState
.attr
.setUnderline(false);
3536 currentState
.attr
.setForeColor(Color
.WHITE
);
3539 // Set black background
3540 currentState
.attr
.setBackColor(Color
.BLACK
);
3543 // Set red background
3544 currentState
.attr
.setBackColor(Color
.RED
);
3547 // Set green background
3548 currentState
.attr
.setBackColor(Color
.GREEN
);
3551 // Set yellow background
3552 currentState
.attr
.setBackColor(Color
.YELLOW
);
3555 // Set blue background
3556 currentState
.attr
.setBackColor(Color
.BLUE
);
3559 // Set magenta background
3560 currentState
.attr
.setBackColor(Color
.MAGENTA
);
3563 // Set cyan background
3564 currentState
.attr
.setBackColor(Color
.CYAN
);
3567 // Set white background
3568 currentState
.attr
.setBackColor(Color
.WHITE
);
3571 if (type
== DeviceType
.XTERM
) {
3573 * Xterm supports T.416 / ISO-8613-3 codes to select
3574 * either an indexed color or an RGB value. (It also
3575 * permits these ISO-8613-3 SGR sequences to be separated
3576 * by colons rather than semicolons.)
3578 * We will not support this at this time. Also, in order
3579 * to keep a clean display, we cannot parse anything else
3586 // Default background
3587 currentState
.attr
.setBackColor(Color
.BLACK
);
3597 * DA - Device attributes.
3600 int extendedFlag
= 0;
3602 if (collectBuffer
.length() > 0) {
3603 String args
= collectBuffer
.substring(1);
3604 if (collectBuffer
.charAt(0) == '>') {
3606 if (collectBuffer
.length() >= 2) {
3607 i
= Integer
.parseInt(args
.toString());
3609 } else if (collectBuffer
.charAt(0) == '=') {
3611 if (collectBuffer
.length() >= 2) {
3612 i
= Integer
.parseInt(args
.toString());
3615 // Unknown code, bail out
3620 if ((i
!= 0) && (i
!= 1)) {
3624 if ((extendedFlag
== 0) && (i
== 0)) {
3625 // Send string directly to remote side
3626 writeRemote(deviceTypeResponse());
3630 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3632 if ((extendedFlag
== 1) && (i
== 0)) {
3634 * Request "What type of terminal are you, what is your
3635 * firmware version, and what hardware options do you have
3638 * Respond: "I am a VT220 (identification code of 1), my
3639 * firmware version is _____ (Pv), and I have _____ Po
3640 * options installed."
3646 if (s8c1t
== true) {
3647 writeRemote("\u009b>1;10;0c");
3649 writeRemote("\033[>1;10;0c");
3655 if ((extendedFlag
== 2) && (i
== 0)) {
3658 * Request "What is your unit ID?"
3660 * Respond: "I was manufactured at site 00 and have a unique ID
3664 writeRemote("\033P!|00010203\033\\");
3669 * DECSTBM - Set top and bottom margins.
3671 private void decstbm() {
3672 boolean decPrivateModeFlag
= false;
3674 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3675 if (collectBuffer
.charAt(i
) == '?') {
3676 decPrivateModeFlag
= true;
3680 if (decPrivateModeFlag
) {
3681 // This could be restore DEC private mode values.
3685 int top
= getCsiParam(0, 1, 1, height
) - 1;
3686 int bottom
= getCsiParam(1, height
, 1, height
) - 1;
3691 scrollRegionTop
= top
;
3692 scrollRegionBottom
= bottom
;
3695 cursorPosition(0, 0);
3700 * DECREQTPARM - Request terminal parameters.
3702 private void decreqtparm() {
3703 int i
= getCsiParam(0, 0);
3705 if ((i
!= 0) && (i
!= 1)) {
3712 * Request terminal parameters.
3716 * Parity NONE, 8 bits, xmitspeed 38400, recvspeed 38400.
3717 * (CLoCk MULtiplier = 1, STP option flags = 0)
3721 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3724 str
= String
.format("\u009b%d;1;1;128;128;1;0x", i
+ 2);
3726 str
= String
.format("\033[%d;1;1;128;128;1;0x", i
+ 2);
3732 * DECSCA - Select Character Attributes.
3734 private void decsca() {
3735 int i
= getCsiParam(0, 0);
3737 if ((i
== 0) || (i
== 2)) {
3739 currentState
.attr
.setProtect(false);
3743 currentState
.attr
.setProtect(true);
3748 * DECSTR - Soft Terminal Reset.
3750 private void decstr() {
3751 // Do exactly like RIS - Reset to initial state
3753 // Do I clear screen too? I think so...
3754 eraseScreen(0, 0, height
- 1, width
- 1, false);
3755 cursorPosition(0, 0);
3759 * DSR - Device status report.
3761 private void dsr() {
3762 boolean decPrivateModeFlag
= false;
3764 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3765 if (collectBuffer
.charAt(i
) == '?') {
3766 decPrivateModeFlag
= true;
3771 int i
= getCsiParam(0, 0);
3776 // Request status report. Respond with "OK, no malfunction."
3778 // Send string directly to remote side
3779 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3782 writeRemote("\u009b0n");
3784 writeRemote("\033[0n");
3789 // Request cursor position. Respond with current position.
3791 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3794 str
= String
.format("\u009b%d;%dR",
3795 currentState
.cursorY
+ 1, currentState
.cursorX
+ 1);
3797 str
= String
.format("\033[%d;%dR",
3798 currentState
.cursorY
+ 1, currentState
.cursorX
+ 1);
3801 // Send string directly to remote side
3806 if (decPrivateModeFlag
== true) {
3808 // Request printer status report. Respond with "Printer not
3811 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3812 && (s8c1t
== true)) {
3813 writeRemote("\u009b?13n");
3815 writeRemote("\033[?13n");
3821 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3822 && (decPrivateModeFlag
== true)
3825 // Request user-defined keys are locked or unlocked. Respond
3826 // with "User-defined keys are locked."
3828 if (s8c1t
== true) {
3829 writeRemote("\u009b?21n");
3831 writeRemote("\033[?21n");
3837 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3838 && (decPrivateModeFlag
== true)
3841 // Request keyboard language. Respond with "Keyboard
3842 // language is North American."
3844 if (s8c1t
== true) {
3845 writeRemote("\u009b?27;1n");
3847 writeRemote("\033[?27;1n");
3854 // Some other option, ignore
3860 * TBC - Tabulation clear.
3862 private void tbc() {
3863 int i
= getCsiParam(0, 0);
3865 List
<Integer
> newStops
= new ArrayList
<Integer
>();
3866 for (Integer stop
: tabStops
) {
3867 if (stop
== currentState
.cursorX
) {
3872 tabStops
= newStops
;
3880 * Erase the characters in the current line from the start column to the
3881 * end column, inclusive.
3883 * @param start starting column to erase (between 0 and width - 1)
3884 * @param end ending column to erase (between 0 and width - 1)
3885 * @param honorProtected if true, do not erase characters with the
3886 * protected attribute set
3888 private void eraseLine(int start
, int end
, final boolean honorProtected
) {
3893 if (end
> width
- 1) {
3900 for (int i
= start
; i
<= end
; i
++) {
3901 DisplayLine line
= display
.get(currentState
.cursorY
);
3902 if ((!honorProtected
)
3903 || ((honorProtected
) && (!line
.charAt(i
).isProtect()))) {
3910 * From the VT102 manual:
3912 * Erasing a character also erases any character
3913 * attribute of the character.
3919 * Erase with the current color a.k.a. back-color erase
3922 line
.setChar(i
, ' ');
3923 line
.setAttr(i
, currentState
.attr
);
3931 * Erase a rectangular section of the screen, inclusive. end column,
3934 * @param startRow starting row to erase (between 0 and height - 1)
3935 * @param startCol starting column to erase (between 0 and width - 1)
3936 * @param endRow ending row to erase (between 0 and height - 1)
3937 * @param endCol ending column to erase (between 0 and width - 1)
3938 * @param honorProtected if true, do not erase characters with the
3939 * protected attribute set
3941 private void eraseScreen(final int startRow
, final int startCol
,
3942 final int endRow
, final int endCol
, final boolean honorProtected
) {
3950 || (endRow
< startRow
)
3951 || (endCol
< startCol
)
3956 oldCursorY
= currentState
.cursorY
;
3957 for (int i
= startRow
; i
<= endRow
; i
++) {
3958 currentState
.cursorY
= i
;
3959 eraseLine(startCol
, endCol
, honorProtected
);
3961 // Erase display clears the double attributes
3962 display
.get(i
).setDoubleWidth(false);
3963 display
.get(i
).setDoubleHeight(0);
3965 currentState
.cursorY
= oldCursorY
;
3969 * VT220 printer functions. All of these are parsed, but won't do
3972 private void printerFunctions() {
3973 boolean decPrivateModeFlag
= false;
3974 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3975 if (collectBuffer
.charAt(i
) == '?') {
3976 decPrivateModeFlag
= true;
3981 int i
= getCsiParam(0, 0);
3986 if (decPrivateModeFlag
== false) {
3992 if (decPrivateModeFlag
== true) {
3993 // Print cursor line
3998 if (decPrivateModeFlag
== true) {
3999 // Auto print mode OFF
4001 // Printer controller OFF
4003 // Characters re-appear on the screen
4004 printerControllerMode
= false;
4009 if (decPrivateModeFlag
== true) {
4013 // Printer controller
4015 // Characters get sucked into oblivion
4016 printerControllerMode
= true;
4027 * Handle the SCAN_OSC_STRING state. Handle this in VT100 because lots
4028 * of remote systems will send an XTerm title sequence even if TERM isn't
4031 * @param xtermChar the character received from the remote side
4033 private void oscPut(final char xtermChar
) {
4035 collectBuffer
.append(xtermChar
);
4038 if (xtermChar
== 0x07) {
4039 String args
= collectBuffer
.substring(0,
4040 collectBuffer
.length() - 1);
4041 String
[] p
= args
.toString().split(";");
4043 if ((p
[0].equals("0")) || (p
[0].equals("2"))) {
4051 // Go to SCAN_GROUND state
4058 * Run this input character through the ECMA48 state machine.
4060 * @param ch character from the remote side
4062 private void consume(char ch
) {
4065 // System.err.printf("%c", ch);
4067 // Special case for VT10x: 7-bit characters only
4068 if ((type
== DeviceType
.VT100
) || (type
== DeviceType
.VT102
)) {
4069 ch
= (char)(ch
& 0x7F);
4072 // Special "anywhere" states
4074 // 18, 1A --> execute, then switch to SCAN_GROUND
4075 if ((ch
== 0x18) || (ch
== 0x1A)) {
4076 // CAN and SUB abort escape sequences
4081 // 80-8F, 91-97, 99, 9A, 9C --> execute, then switch to SCAN_GROUND
4085 && (scanState
!= ScanState
.DCS_ENTRY
)
4086 && (scanState
!= ScanState
.DCS_INTERMEDIATE
)
4087 && (scanState
!= ScanState
.DCS_IGNORE
)
4088 && (scanState
!= ScanState
.DCS_PARAM
)
4089 && (scanState
!= ScanState
.DCS_PASSTHROUGH
)
4092 scanState
= ScanState
.ESCAPE
;
4096 // 0x9B == CSI 8-bit sequence
4098 scanState
= ScanState
.CSI_ENTRY
;
4102 // 0x9D goes to ScanState.OSC_STRING
4104 scanState
= ScanState
.OSC_STRING
;
4108 // 0x90 goes to DCS_ENTRY
4110 scanState
= ScanState
.DCS_ENTRY
;
4114 // 0x98, 0x9E, and 0x9F go to SOSPMAPC_STRING
4115 if ((ch
== 0x98) || (ch
== 0x9E) || (ch
== 0x9F)) {
4116 scanState
= ScanState
.SOSPMAPC_STRING
;
4120 // 0x7F (DEL) is always discarded
4125 switch (scanState
) {
4128 // 00-17, 19, 1C-1F --> execute
4129 // 80-8F, 91-9A, 9C --> execute
4130 if ((ch
<= 0x1F) || ((ch
>= 0x80) && (ch
<= 0x9F))) {
4131 handleControlChar(ch
);
4135 if (((ch
>= 0x20) && (ch
<= 0x7F))
4139 // VT220 printer --> trash bin
4140 if (((type
== DeviceType
.VT220
)
4141 || (type
== DeviceType
.XTERM
))
4142 && (printerControllerMode
== true)
4147 // Hang onto this character
4148 repCh
= mapCharacter(ch
);
4150 // Print this character
4151 printCharacter(repCh
);
4156 // 00-17, 19, 1C-1F --> execute
4158 handleControlChar(ch
);
4162 // 20-2F --> collect, then switch to ESCAPE_INTERMEDIATE
4163 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
4165 scanState
= ScanState
.ESCAPE_INTERMEDIATE
;
4169 // 30-4F, 51-57, 59, 5A, 5C, 60-7E --> dispatch, then switch to GROUND
4170 if ((ch
>= 0x30) && (ch
<= 0x4F)) {
4181 // DECSC - Save cursor
4182 // Note this code overlaps both ANSI and VT52 mode
4187 // DECRC - Restore cursor
4188 // Note this code overlaps both ANSI and VT52 mode
4197 if (vt52Mode
== true) {
4198 // DECANM - Enter ANSI mode
4200 arrowKeyMode
= ArrowKeyMode
.VT100
;
4203 * From the VT102 docs: "You use ANSI mode to select
4204 * most terminal features; the terminal uses the same
4205 * features when it switches to VT52 mode. You
4206 * cannot, however, change most of these features in
4209 * In other words, do not reset any other attributes
4210 * when switching between VT52 submode and ANSI.
4214 currentState
.g0Charset
= CharacterSet
.US
;
4215 currentState
.g1Charset
= CharacterSet
.DRAWING
;
4217 singleshift
= Singleshift
.NONE
;
4218 currentState
.glLockshift
= LockshiftMode
.NONE
;
4219 currentState
.grLockshift
= LockshiftMode
.NONE
;
4223 // DECKPAM - Keypad application mode
4224 // Note this code overlaps both ANSI and VT52 mode
4228 // DECKPNM - Keypad numeric mode
4229 // Note this code overlaps both ANSI and VT52 mode
4236 if (vt52Mode
== true) {
4237 // Cursor up, and stop at the top without scrolling
4242 if (vt52Mode
== true) {
4243 // Cursor down, and stop at the bottom without scrolling
4244 cursorDown(1, false);
4248 if (vt52Mode
== true) {
4249 // Cursor right, and stop at the right without scrolling
4250 cursorRight(1, false);
4254 if (vt52Mode
== true) {
4255 // Cursor left, and stop at the left without scrolling
4256 cursorLeft(1, false);
4263 if (vt52Mode
== true) {
4271 if (vt52Mode
== true) {
4272 // G0 --> Special graphics
4273 currentState
.g0Charset
= CharacterSet
.VT52_GRAPHICS
;
4277 if (vt52Mode
== true) {
4279 currentState
.g0Charset
= CharacterSet
.US
;
4283 if (vt52Mode
== true) {
4285 cursorPosition(0, 0);
4287 // HTS - Horizontal tabulation set
4292 if (vt52Mode
== true) {
4293 // Reverse line feed. Same as RI.
4298 if (vt52Mode
== true) {
4299 // Erase to end of screen
4300 eraseLine(currentState
.cursorX
, width
- 1, false);
4301 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1,
4306 if (vt52Mode
== true) {
4307 // Erase to end of line
4308 eraseLine(currentState
.cursorX
, width
- 1, false);
4314 if (vt52Mode
== true) {
4317 // RI - Reverse index
4322 if (vt52Mode
== false) {
4324 singleshift
= Singleshift
.SS2
;
4328 if (vt52Mode
== false) {
4330 singleshift
= Singleshift
.SS3
;
4337 if ((ch
>= 0x51) && (ch
<= 0x57)) {
4353 if (vt52Mode
== true) {
4354 scanState
= ScanState
.VT52_DIRECT_CURSOR_ADDRESS
;
4362 if (vt52Mode
== true) {
4364 // Send string directly to remote side
4365 writeRemote("\033/Z");
4368 // Send string directly to remote side
4369 writeRemote(deviceTypeResponse());
4380 // VT52 cannot get to any of these other states
4381 if (vt52Mode
== true) {
4386 if ((ch
>= 0x60) && (ch
<= 0x7E)) {
4393 // RIS - Reset to initial state
4395 // Do I clear screen too? I think so...
4396 eraseScreen(0, 0, height
- 1, width
- 1, false);
4397 cursorPosition(0, 0);
4411 if ((type
== DeviceType
.VT220
)
4412 || (type
== DeviceType
.XTERM
)) {
4414 // VT220 lockshift G2 into GL
4415 currentState
.glLockshift
= LockshiftMode
.G2_GL
;
4420 if ((type
== DeviceType
.VT220
)
4421 || (type
== DeviceType
.XTERM
)) {
4423 // VT220 lockshift G3 into GL
4424 currentState
.glLockshift
= LockshiftMode
.G3_GL
;
4442 if ((type
== DeviceType
.VT220
)
4443 || (type
== DeviceType
.XTERM
)) {
4445 // VT220 lockshift G3 into GR
4446 currentState
.grLockshift
= LockshiftMode
.G3_GR
;
4451 if ((type
== DeviceType
.VT220
)
4452 || (type
== DeviceType
.XTERM
)) {
4454 // VT220 lockshift G2 into GR
4455 currentState
.grLockshift
= LockshiftMode
.G2_GR
;
4461 if ((type
== DeviceType
.VT220
)
4462 || (type
== DeviceType
.XTERM
)) {
4464 // VT220 lockshift G1 into GR
4465 currentState
.grLockshift
= LockshiftMode
.G1_GR
;
4475 // 0x5B goes to CSI_ENTRY
4477 scanState
= ScanState
.CSI_ENTRY
;
4480 // 0x5D goes to OSC_STRING
4482 scanState
= ScanState
.OSC_STRING
;
4485 // 0x50 goes to DCS_ENTRY
4487 scanState
= ScanState
.DCS_ENTRY
;
4490 // 0x58, 0x5E, and 0x5F go to SOSPMAPC_STRING
4491 if ((ch
== 0x58) || (ch
== 0x5E) || (ch
== 0x5F)) {
4492 scanState
= ScanState
.SOSPMAPC_STRING
;
4497 case ESCAPE_INTERMEDIATE
:
4498 // 00-17, 19, 1C-1F --> execute
4500 handleControlChar(ch
);
4503 // 20-2F --> collect
4504 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
4508 // 30-7E --> dispatch, then switch to GROUND
4509 if ((ch
>= 0x30) && (ch
<= 0x7E)) {
4512 if ((collectBuffer
.length() == 1)
4513 && (collectBuffer
.charAt(0) == '(')) {
4514 // G0 --> Special graphics
4515 currentState
.g0Charset
= CharacterSet
.DRAWING
;
4517 if ((collectBuffer
.length() == 1)
4518 && (collectBuffer
.charAt(0) == ')')) {
4519 // G1 --> Special graphics
4520 currentState
.g1Charset
= CharacterSet
.DRAWING
;
4522 if ((type
== DeviceType
.VT220
)
4523 || (type
== DeviceType
.XTERM
)) {
4525 if ((collectBuffer
.length() == 1)
4526 && (collectBuffer
.charAt(0) == '*')) {
4527 // G2 --> Special graphics
4528 currentState
.g2Charset
= CharacterSet
.DRAWING
;
4530 if ((collectBuffer
.length() == 1)
4531 && (collectBuffer
.charAt(0) == '+')) {
4532 // G3 --> Special graphics
4533 currentState
.g3Charset
= CharacterSet
.DRAWING
;
4538 if ((collectBuffer
.length() == 1)
4539 && (collectBuffer
.charAt(0) == '(')) {
4540 // G0 --> Alternate character ROM standard character set
4541 currentState
.g0Charset
= CharacterSet
.ROM
;
4543 if ((collectBuffer
.length() == 1)
4544 && (collectBuffer
.charAt(0) == ')')) {
4545 // G1 --> Alternate character ROM standard character set
4546 currentState
.g1Charset
= CharacterSet
.ROM
;
4550 if ((collectBuffer
.length() == 1)
4551 && (collectBuffer
.charAt(0) == '(')) {
4552 // G0 --> Alternate character ROM special graphics
4553 currentState
.g0Charset
= CharacterSet
.ROM_SPECIAL
;
4555 if ((collectBuffer
.length() == 1)
4556 && (collectBuffer
.charAt(0) == ')')) {
4557 // G1 --> Alternate character ROM special graphics
4558 currentState
.g1Charset
= CharacterSet
.ROM_SPECIAL
;
4562 if ((collectBuffer
.length() == 1)
4563 && (collectBuffer
.charAt(0) == '#')) {
4564 // DECDHL - Double-height line (top half)
4569 if ((collectBuffer
.length() == 1)
4570 && (collectBuffer
.charAt(0) == '#')) {
4571 // DECDHL - Double-height line (bottom half)
4574 if ((type
== DeviceType
.VT220
)
4575 || (type
== DeviceType
.XTERM
)) {
4577 if ((collectBuffer
.length() == 1)
4578 && (collectBuffer
.charAt(0) == '(')) {
4580 currentState
.g0Charset
= CharacterSet
.NRC_DUTCH
;
4582 if ((collectBuffer
.length() == 1)
4583 && (collectBuffer
.charAt(0) == ')')) {
4585 currentState
.g1Charset
= CharacterSet
.NRC_DUTCH
;
4587 if ((collectBuffer
.length() == 1)
4588 && (collectBuffer
.charAt(0) == '*')) {
4590 currentState
.g2Charset
= CharacterSet
.NRC_DUTCH
;
4592 if ((collectBuffer
.length() == 1)
4593 && (collectBuffer
.charAt(0) == '+')) {
4595 currentState
.g3Charset
= CharacterSet
.NRC_DUTCH
;
4600 if ((collectBuffer
.length() == 1)
4601 && (collectBuffer
.charAt(0) == '#')) {
4602 // DECSWL - Single-width line
4605 if ((type
== DeviceType
.VT220
)
4606 || (type
== DeviceType
.XTERM
)) {
4608 if ((collectBuffer
.length() == 1)
4609 && (collectBuffer
.charAt(0) == '(')) {
4611 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
4613 if ((collectBuffer
.length() == 1)
4614 && (collectBuffer
.charAt(0) == ')')) {
4616 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
4618 if ((collectBuffer
.length() == 1)
4619 && (collectBuffer
.charAt(0) == '*')) {
4621 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
4623 if ((collectBuffer
.length() == 1)
4624 && (collectBuffer
.charAt(0) == '+')) {
4626 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
4631 if ((collectBuffer
.length() == 1)
4632 && (collectBuffer
.charAt(0) == '#')) {
4633 // DECDWL - Double-width line
4636 if ((type
== DeviceType
.VT220
)
4637 || (type
== DeviceType
.XTERM
)) {
4639 if ((collectBuffer
.length() == 1)
4640 && (collectBuffer
.charAt(0) == '(')) {
4642 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
4644 if ((collectBuffer
.length() == 1)
4645 && (collectBuffer
.charAt(0) == ')')) {
4647 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
4649 if ((collectBuffer
.length() == 1)
4650 && (collectBuffer
.charAt(0) == '*')) {
4652 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
4654 if ((collectBuffer
.length() == 1)
4655 && (collectBuffer
.charAt(0) == '+')) {
4657 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
4662 if ((type
== DeviceType
.VT220
)
4663 || (type
== DeviceType
.XTERM
)) {
4665 if ((collectBuffer
.length() == 1)
4666 && (collectBuffer
.charAt(0) == '(')) {
4668 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
4670 if ((collectBuffer
.length() == 1)
4671 && (collectBuffer
.charAt(0) == ')')) {
4673 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
4675 if ((collectBuffer
.length() == 1)
4676 && (collectBuffer
.charAt(0) == '*')) {
4678 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
4680 if ((collectBuffer
.length() == 1)
4681 && (collectBuffer
.charAt(0) == '+')) {
4683 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
4688 if ((collectBuffer
.length() == 1)
4689 && (collectBuffer
.charAt(0) == '#')) {
4690 // DECALN - Screen alignment display
4699 if ((type
== DeviceType
.VT220
)
4700 || (type
== DeviceType
.XTERM
)) {
4702 if ((collectBuffer
.length() == 1)
4703 && (collectBuffer
.charAt(0) == '(')) {
4704 // G0 --> DEC_SUPPLEMENTAL
4705 currentState
.g0Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4707 if ((collectBuffer
.length() == 1)
4708 && (collectBuffer
.charAt(0) == ')')) {
4709 // G1 --> DEC_SUPPLEMENTAL
4710 currentState
.g1Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4712 if ((collectBuffer
.length() == 1)
4713 && (collectBuffer
.charAt(0) == '*')) {
4714 // G2 --> DEC_SUPPLEMENTAL
4715 currentState
.g2Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4717 if ((collectBuffer
.length() == 1)
4718 && (collectBuffer
.charAt(0) == '+')) {
4719 // G3 --> DEC_SUPPLEMENTAL
4720 currentState
.g3Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
4725 if ((type
== DeviceType
.VT220
)
4726 || (type
== DeviceType
.XTERM
)) {
4728 if ((collectBuffer
.length() == 1)
4729 && (collectBuffer
.charAt(0) == '(')) {
4731 currentState
.g0Charset
= CharacterSet
.NRC_SWISS
;
4733 if ((collectBuffer
.length() == 1)
4734 && (collectBuffer
.charAt(0) == ')')) {
4736 currentState
.g1Charset
= CharacterSet
.NRC_SWISS
;
4738 if ((collectBuffer
.length() == 1)
4739 && (collectBuffer
.charAt(0) == '*')) {
4741 currentState
.g2Charset
= CharacterSet
.NRC_SWISS
;
4743 if ((collectBuffer
.length() == 1)
4744 && (collectBuffer
.charAt(0) == '+')) {
4746 currentState
.g3Charset
= CharacterSet
.NRC_SWISS
;
4755 if ((collectBuffer
.length() == 1)
4756 && (collectBuffer
.charAt(0) == '(')) {
4757 // G0 --> United Kingdom set
4758 currentState
.g0Charset
= CharacterSet
.UK
;
4760 if ((collectBuffer
.length() == 1)
4761 && (collectBuffer
.charAt(0) == ')')) {
4762 // G1 --> United Kingdom set
4763 currentState
.g1Charset
= CharacterSet
.UK
;
4765 if ((type
== DeviceType
.VT220
)
4766 || (type
== DeviceType
.XTERM
)) {
4768 if ((collectBuffer
.length() == 1)
4769 && (collectBuffer
.charAt(0) == '*')) {
4770 // G2 --> United Kingdom set
4771 currentState
.g2Charset
= CharacterSet
.UK
;
4773 if ((collectBuffer
.length() == 1)
4774 && (collectBuffer
.charAt(0) == '+')) {
4775 // G3 --> United Kingdom set
4776 currentState
.g3Charset
= CharacterSet
.UK
;
4781 if ((collectBuffer
.length() == 1)
4782 && (collectBuffer
.charAt(0) == '(')) {
4784 currentState
.g0Charset
= CharacterSet
.US
;
4786 if ((collectBuffer
.length() == 1)
4787 && (collectBuffer
.charAt(0) == ')')) {
4789 currentState
.g1Charset
= CharacterSet
.US
;
4791 if ((type
== DeviceType
.VT220
)
4792 || (type
== DeviceType
.XTERM
)) {
4794 if ((collectBuffer
.length() == 1)
4795 && (collectBuffer
.charAt(0) == '*')) {
4797 currentState
.g2Charset
= CharacterSet
.US
;
4799 if ((collectBuffer
.length() == 1)
4800 && (collectBuffer
.charAt(0) == '+')) {
4802 currentState
.g3Charset
= CharacterSet
.US
;
4807 if ((type
== DeviceType
.VT220
)
4808 || (type
== DeviceType
.XTERM
)) {
4810 if ((collectBuffer
.length() == 1)
4811 && (collectBuffer
.charAt(0) == '(')) {
4813 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
4815 if ((collectBuffer
.length() == 1)
4816 && (collectBuffer
.charAt(0) == ')')) {
4818 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
4820 if ((collectBuffer
.length() == 1)
4821 && (collectBuffer
.charAt(0) == '*')) {
4823 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
4825 if ((collectBuffer
.length() == 1)
4826 && (collectBuffer
.charAt(0) == '+')) {
4828 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
4835 if ((type
== DeviceType
.VT220
)
4836 || (type
== DeviceType
.XTERM
)) {
4838 if ((collectBuffer
.length() == 1)
4839 && (collectBuffer
.charAt(0) == '(')) {
4841 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
4843 if ((collectBuffer
.length() == 1)
4844 && (collectBuffer
.charAt(0) == ')')) {
4846 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
4848 if ((collectBuffer
.length() == 1)
4849 && (collectBuffer
.charAt(0) == '*')) {
4851 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
4853 if ((collectBuffer
.length() == 1)
4854 && (collectBuffer
.charAt(0) == '+')) {
4856 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
4861 if ((type
== DeviceType
.VT220
)
4862 || (type
== DeviceType
.XTERM
)) {
4864 if ((collectBuffer
.length() == 1)
4865 && (collectBuffer
.charAt(0) == ' ')) {
4872 if ((type
== DeviceType
.VT220
)
4873 || (type
== DeviceType
.XTERM
)) {
4875 if ((collectBuffer
.length() == 1)
4876 && (collectBuffer
.charAt(0) == ' ')) {
4883 if ((type
== DeviceType
.VT220
)
4884 || (type
== DeviceType
.XTERM
)) {
4886 if ((collectBuffer
.length() == 1)
4887 && (collectBuffer
.charAt(0) == '(')) {
4889 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
4891 if ((collectBuffer
.length() == 1)
4892 && (collectBuffer
.charAt(0) == ')')) {
4894 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
4896 if ((collectBuffer
.length() == 1)
4897 && (collectBuffer
.charAt(0) == '*')) {
4899 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
4901 if ((collectBuffer
.length() == 1)
4902 && (collectBuffer
.charAt(0) == '+')) {
4904 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
4912 if ((type
== DeviceType
.VT220
)
4913 || (type
== DeviceType
.XTERM
)) {
4915 if ((collectBuffer
.length() == 1)
4916 && (collectBuffer
.charAt(0) == '(')) {
4918 currentState
.g0Charset
= CharacterSet
.NRC_GERMAN
;
4920 if ((collectBuffer
.length() == 1)
4921 && (collectBuffer
.charAt(0) == ')')) {
4923 currentState
.g1Charset
= CharacterSet
.NRC_GERMAN
;
4925 if ((collectBuffer
.length() == 1)
4926 && (collectBuffer
.charAt(0) == '*')) {
4928 currentState
.g2Charset
= CharacterSet
.NRC_GERMAN
;
4930 if ((collectBuffer
.length() == 1)
4931 && (collectBuffer
.charAt(0) == '+')) {
4933 currentState
.g3Charset
= CharacterSet
.NRC_GERMAN
;
4944 if ((type
== DeviceType
.VT220
)
4945 || (type
== DeviceType
.XTERM
)) {
4947 if ((collectBuffer
.length() == 1)
4948 && (collectBuffer
.charAt(0) == '(')) {
4950 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH_CA
;
4952 if ((collectBuffer
.length() == 1)
4953 && (collectBuffer
.charAt(0) == ')')) {
4955 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH_CA
;
4957 if ((collectBuffer
.length() == 1)
4958 && (collectBuffer
.charAt(0) == '*')) {
4960 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH_CA
;
4962 if ((collectBuffer
.length() == 1)
4963 && (collectBuffer
.charAt(0) == '+')) {
4965 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH_CA
;
4970 if ((type
== DeviceType
.VT220
)
4971 || (type
== DeviceType
.XTERM
)) {
4973 if ((collectBuffer
.length() == 1)
4974 && (collectBuffer
.charAt(0) == '(')) {
4976 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH
;
4978 if ((collectBuffer
.length() == 1)
4979 && (collectBuffer
.charAt(0) == ')')) {
4981 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH
;
4983 if ((collectBuffer
.length() == 1)
4984 && (collectBuffer
.charAt(0) == '*')) {
4986 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH
;
4988 if ((collectBuffer
.length() == 1)
4989 && (collectBuffer
.charAt(0) == '+')) {
4991 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH
;
5003 if ((type
== DeviceType
.VT220
)
5004 || (type
== DeviceType
.XTERM
)) {
5006 if ((collectBuffer
.length() == 1)
5007 && (collectBuffer
.charAt(0) == '(')) {
5009 currentState
.g0Charset
= CharacterSet
.NRC_ITALIAN
;
5011 if ((collectBuffer
.length() == 1)
5012 && (collectBuffer
.charAt(0) == ')')) {
5014 currentState
.g1Charset
= CharacterSet
.NRC_ITALIAN
;
5016 if ((collectBuffer
.length() == 1)
5017 && (collectBuffer
.charAt(0) == '*')) {
5019 currentState
.g2Charset
= CharacterSet
.NRC_ITALIAN
;
5021 if ((collectBuffer
.length() == 1)
5022 && (collectBuffer
.charAt(0) == '+')) {
5024 currentState
.g3Charset
= CharacterSet
.NRC_ITALIAN
;
5029 if ((type
== DeviceType
.VT220
)
5030 || (type
== DeviceType
.XTERM
)) {
5032 if ((collectBuffer
.length() == 1)
5033 && (collectBuffer
.charAt(0) == '(')) {
5035 currentState
.g0Charset
= CharacterSet
.NRC_SPANISH
;
5037 if ((collectBuffer
.length() == 1)
5038 && (collectBuffer
.charAt(0) == ')')) {
5040 currentState
.g1Charset
= CharacterSet
.NRC_SPANISH
;
5042 if ((collectBuffer
.length() == 1)
5043 && (collectBuffer
.charAt(0) == '*')) {
5045 currentState
.g2Charset
= CharacterSet
.NRC_SPANISH
;
5047 if ((collectBuffer
.length() == 1)
5048 && (collectBuffer
.charAt(0) == '+')) {
5050 currentState
.g3Charset
= CharacterSet
.NRC_SPANISH
;
5097 // 0x9C goes to GROUND
5105 // 00-17, 19, 1C-1F --> execute
5107 handleControlChar(ch
);
5110 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
5111 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5113 scanState
= ScanState
.CSI_INTERMEDIATE
;
5116 // 30-39, 3B --> param, then switch to CSI_PARAM
5117 if ((ch
>= '0') && (ch
<= '9')) {
5119 scanState
= ScanState
.CSI_PARAM
;
5123 scanState
= ScanState
.CSI_PARAM
;
5126 // 3C-3F --> collect, then switch to CSI_PARAM
5127 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5129 scanState
= ScanState
.CSI_PARAM
;
5132 // 40-7E --> dispatch, then switch to GROUND
5133 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5136 // ICH - Insert character
5144 // CUD - Cursor down
5148 // CUF - Cursor forward
5152 // CUB - Cursor backward
5156 // CNL - Cursor down and to column 1
5157 if (type
== DeviceType
.XTERM
) {
5162 // CPL - Cursor up and to column 1
5163 if (type
== DeviceType
.XTERM
) {
5168 // CHA - Cursor to column # in current row
5169 if (type
== DeviceType
.XTERM
) {
5174 // CUP - Cursor position
5178 // CHT - Cursor forward X tab stops (default 1)
5179 if (type
== DeviceType
.XTERM
) {
5184 // ED - Erase in display
5188 // EL - Erase in line
5203 // DCH - Delete character
5210 // Scroll up X lines (default 1)
5211 if (type
== DeviceType
.XTERM
) {
5216 // Scroll down X lines (default 1)
5217 if (type
== DeviceType
.XTERM
) {
5226 if ((type
== DeviceType
.VT220
)
5227 || (type
== DeviceType
.XTERM
)) {
5229 // ECH - Erase character
5236 // CBT - Cursor backward X tab stops (default 1)
5237 if (type
== DeviceType
.XTERM
) {
5248 // HPA - Cursor to column # in current row. Same as CHA
5249 if (type
== DeviceType
.XTERM
) {
5254 // HPR - Cursor right. Same as CUF
5255 if (type
== DeviceType
.XTERM
) {
5260 // REP - Repeat last char X times
5261 if (type
== DeviceType
.XTERM
) {
5266 // DA - Device attributes
5270 // VPA - Cursor to row, current column.
5271 if (type
== DeviceType
.XTERM
) {
5276 // VPR - Cursor down. Same as CUD
5277 if (type
== DeviceType
.XTERM
) {
5282 // HVP - Horizontal and vertical position
5286 // TBC - Tabulation clear
5290 // Sets an ANSI or DEC private toggle
5294 if ((type
== DeviceType
.VT220
)
5295 || (type
== DeviceType
.XTERM
)) {
5297 // Printer functions
5305 // Sets an ANSI or DEC private toggle
5309 // SGR - Select graphics rendition
5313 // DSR - Device status report
5320 // DECLL - Load leds
5324 // DECSTBM - Set top and bottom margins
5328 // Save cursor (ANSI.SYS)
5329 if (type
== DeviceType
.XTERM
) {
5330 savedState
.cursorX
= currentState
.cursorX
;
5331 savedState
.cursorY
= currentState
.cursorY
;
5337 // Restore cursor (ANSI.SYS)
5338 if (type
== DeviceType
.XTERM
) {
5339 cursorPosition(savedState
.cursorY
, savedState
.cursorX
);
5346 // DECREQTPARM - Request terminal parameters
5362 // 0x9C goes to GROUND
5367 // 0x3A goes to CSI_IGNORE
5369 scanState
= ScanState
.CSI_IGNORE
;
5374 // 00-17, 19, 1C-1F --> execute
5376 handleControlChar(ch
);
5379 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
5380 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5382 scanState
= ScanState
.CSI_INTERMEDIATE
;
5385 // 30-39, 3B --> param
5386 if ((ch
>= '0') && (ch
<= '9')) {
5393 // 0x3A goes to CSI_IGNORE
5395 scanState
= ScanState
.CSI_IGNORE
;
5397 // 0x3C-3F goes to CSI_IGNORE
5398 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5399 scanState
= ScanState
.CSI_IGNORE
;
5402 // 40-7E --> dispatch, then switch to GROUND
5403 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5406 // ICH - Insert character
5414 // CUD - Cursor down
5418 // CUF - Cursor forward
5422 // CUB - Cursor backward
5426 // CNL - Cursor down and to column 1
5427 if (type
== DeviceType
.XTERM
) {
5432 // CPL - Cursor up and to column 1
5433 if (type
== DeviceType
.XTERM
) {
5438 // CHA - Cursor to column # in current row
5439 if (type
== DeviceType
.XTERM
) {
5444 // CUP - Cursor position
5448 // CHT - Cursor forward X tab stops (default 1)
5449 if (type
== DeviceType
.XTERM
) {
5454 // ED - Erase in display
5458 // EL - Erase in line
5473 // DCH - Delete character
5480 // Scroll up X lines (default 1)
5481 if (type
== DeviceType
.XTERM
) {
5486 // Scroll down X lines (default 1)
5487 if (type
== DeviceType
.XTERM
) {
5496 if ((type
== DeviceType
.VT220
)
5497 || (type
== DeviceType
.XTERM
)) {
5499 // ECH - Erase character
5506 // CBT - Cursor backward X tab stops (default 1)
5507 if (type
== DeviceType
.XTERM
) {
5518 // HPA - Cursor to column # in current row. Same as CHA
5519 if (type
== DeviceType
.XTERM
) {
5524 // HPR - Cursor right. Same as CUF
5525 if (type
== DeviceType
.XTERM
) {
5530 // REP - Repeat last char X times
5531 if (type
== DeviceType
.XTERM
) {
5536 // DA - Device attributes
5540 // VPA - Cursor to row, current column.
5541 if (type
== DeviceType
.XTERM
) {
5546 // VPR - Cursor down. Same as CUD
5547 if (type
== DeviceType
.XTERM
) {
5552 // HVP - Horizontal and vertical position
5556 // TBC - Tabulation clear
5560 // Sets an ANSI or DEC private toggle
5564 if ((type
== DeviceType
.VT220
)
5565 || (type
== DeviceType
.XTERM
)) {
5567 // Printer functions
5575 // Sets an ANSI or DEC private toggle
5579 // SGR - Select graphics rendition
5583 // DSR - Device status report
5590 // DECLL - Load leds
5594 // DECSTBM - Set top and bottom margins
5604 // DECREQTPARM - Request terminal parameters
5621 case CSI_INTERMEDIATE
:
5622 // 00-17, 19, 1C-1F --> execute
5624 handleControlChar(ch
);
5627 // 20-2F --> collect
5628 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5632 // 0x30-3F goes to CSI_IGNORE
5633 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
5634 scanState
= ScanState
.CSI_IGNORE
;
5637 // 40-7E --> dispatch, then switch to GROUND
5638 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5690 if (((type
== DeviceType
.VT220
)
5691 || (type
== DeviceType
.XTERM
))
5692 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
5694 // DECSCL - compatibility level
5697 if ((type
== DeviceType
.XTERM
)
5698 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '!')
5700 // DECSTR - Soft terminal reset
5705 if (((type
== DeviceType
.VT220
)
5706 || (type
== DeviceType
.XTERM
))
5707 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
5735 // 00-17, 19, 1C-1F --> execute
5737 handleControlChar(ch
);
5740 // 20-2F --> collect
5741 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5745 // 40-7E --> ignore, then switch to GROUND
5746 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5750 // 20-3F, 7F --> ignore
5756 // 0x9C goes to GROUND
5761 // 0x1B 0x5C goes to GROUND
5766 if ((collectBuffer
.length() > 0)
5767 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5773 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
5774 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5776 scanState
= ScanState
.DCS_INTERMEDIATE
;
5779 // 30-39, 3B --> param, then switch to DCS_PARAM
5780 if ((ch
>= '0') && (ch
<= '9')) {
5782 scanState
= ScanState
.DCS_PARAM
;
5786 scanState
= ScanState
.DCS_PARAM
;
5789 // 3C-3F --> collect, then switch to DCS_PARAM
5790 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5792 scanState
= ScanState
.DCS_PARAM
;
5795 // 00-17, 19, 1C-1F, 7F --> ignore
5797 // 0x3A goes to DCS_IGNORE
5799 scanState
= ScanState
.DCS_IGNORE
;
5802 // 0x40-7E goes to DCS_PASSTHROUGH
5803 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5804 scanState
= ScanState
.DCS_PASSTHROUGH
;
5808 case DCS_INTERMEDIATE
:
5810 // 0x9C goes to GROUND
5815 // 0x1B 0x5C goes to GROUND
5820 if ((collectBuffer
.length() > 0)
5821 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5827 // 0x30-3F goes to DCS_IGNORE
5828 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
5829 scanState
= ScanState
.DCS_IGNORE
;
5832 // 0x40-7E goes to DCS_PASSTHROUGH
5833 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5834 scanState
= ScanState
.DCS_PASSTHROUGH
;
5837 // 00-17, 19, 1C-1F, 7F --> ignore
5842 // 0x9C goes to GROUND
5847 // 0x1B 0x5C goes to GROUND
5852 if ((collectBuffer
.length() > 0)
5853 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5859 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
5860 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5862 scanState
= ScanState
.DCS_INTERMEDIATE
;
5865 // 30-39, 3B --> param
5866 if ((ch
>= '0') && (ch
<= '9')) {
5873 // 00-17, 19, 1C-1F, 7F --> ignore
5875 // 0x3A, 3C-3F goes to DCS_IGNORE
5877 scanState
= ScanState
.DCS_IGNORE
;
5879 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
5880 scanState
= ScanState
.DCS_IGNORE
;
5883 // 0x40-7E goes to DCS_PASSTHROUGH
5884 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
5885 scanState
= ScanState
.DCS_PASSTHROUGH
;
5889 case DCS_PASSTHROUGH
:
5890 // 0x9C goes to GROUND
5895 // 0x1B 0x5C goes to GROUND
5900 if ((collectBuffer
.length() > 0)
5901 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
5907 // 00-17, 19, 1C-1F, 20-7E --> put
5915 if ((ch
>= 0x1C) && (ch
<= 0x1F)) {
5918 if ((ch
>= 0x20) && (ch
<= 0x7E)) {
5927 // 00-17, 19, 1C-1F, 20-7F --> ignore
5929 // 0x9C goes to GROUND
5936 case SOSPMAPC_STRING
:
5937 // 00-17, 19, 1C-1F, 20-7F --> ignore
5939 // 0x9C goes to GROUND
5947 // Special case for Xterm: OSC can pass control characters
5948 if ((ch
== 0x9C) || (ch
<= 0x07)) {
5952 // 00-17, 19, 1C-1F --> ignore
5954 // 20-7F --> osc_put
5955 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
5959 // 0x9C goes to GROUND
5966 case VT52_DIRECT_CURSOR_ADDRESS
:
5967 // This is a special case for the VT52 sequence "ESC Y l c"
5968 if (collectBuffer
.length() == 0) {
5970 } else if (collectBuffer
.length() == 1) {
5971 // We've got the two characters, one in the buffer and the
5973 cursorPosition(collectBuffer
.charAt(0) - '\040', ch
- '\040');
5982 * Expose current cursor X to outside world.
5984 * @return current cursor X
5986 public final int getCursorX() {
5987 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
5988 return currentState
.cursorX
* 2;
5990 return currentState
.cursorX
;
5994 * Expose current cursor Y to outside world.
5996 * @return current cursor Y
5998 public final int getCursorY() {
5999 return currentState
.cursorY
;
6003 * Read function runs on a separate thread.
6005 public final void run() {
6006 boolean utf8
= false;
6007 boolean done
= false;
6009 if (type
== DeviceType
.XTERM
) {
6013 // available() will often return > 1, so we need to read in chunks to
6015 char [] readBufferUTF8
= null;
6016 byte [] readBuffer
= null;
6018 readBufferUTF8
= new char[128];
6020 readBuffer
= new byte[128];
6023 while (!done
&& !stopReaderThread
) {
6025 int n
= inputStream
.available();
6026 // System.err.printf("available() %d\n", n); System.err.flush();
6028 if (readBufferUTF8
.length
< n
) {
6029 // The buffer wasn't big enough, make it huger
6030 int newSizeHalf
= Math
.max(readBufferUTF8
.length
, n
);
6032 readBufferUTF8
= new char[newSizeHalf
* 2];
6035 if (readBuffer
.length
< n
) {
6036 // The buffer wasn't big enough, make it huger
6037 int newSizeHalf
= Math
.max(readBuffer
.length
, n
);
6038 readBuffer
= new byte[newSizeHalf
* 2];
6044 rc
= input
.read(readBufferUTF8
, 0,
6045 readBufferUTF8
.length
);
6047 rc
= inputStream
.read(readBuffer
, 0,
6050 // System.err.printf("read() %d\n", rc); System.err.flush();
6055 for (int i
= 0; i
< rc
; i
++) {
6058 ch
= readBufferUTF8
[i
];
6062 // Don't step on UI events
6063 synchronized (this) {
6068 // System.err.println("end while loop"); System.err.flush();
6069 } catch (IOException e
) {
6070 e
.printStackTrace();
6073 } // while ((done == false) && (stopReaderThread == false))
6075 // Let the rest of the world know that I am done.
6076 stopReaderThread
= true;
6078 // System.err.println("*** run() exiting..."); System.err.flush();