2 * Jexer - Java Text User Interface
4 * The MIT License (MIT)
6 * Copyright (C) 2019 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
.awt
.Graphics2D
;
32 import java
.awt
.image
.BufferedImage
;
33 import java
.io
.BufferedInputStream
;
34 import java
.io
.BufferedOutputStream
;
35 import java
.io
.ByteArrayInputStream
;
36 import java
.io
.CharArrayWriter
;
37 import java
.io
.InputStream
;
38 import java
.io
.InputStreamReader
;
39 import java
.io
.IOException
;
40 import java
.io
.OutputStream
;
41 import java
.io
.OutputStreamWriter
;
42 import java
.io
.PrintWriter
;
43 import java
.io
.Reader
;
44 import java
.io
.UnsupportedEncodingException
;
45 import java
.io
.Writer
;
46 import java
.util
.ArrayList
;
47 import java
.util
.Collections
;
48 import java
.util
.HashMap
;
49 import java
.util
.List
;
50 import javax
.imageio
.ImageIO
;
52 import jexer
.TKeypress
;
53 import jexer
.backend
.GlyphMaker
;
54 import jexer
.bits
.Color
;
55 import jexer
.bits
.Cell
;
56 import jexer
.bits
.CellAttributes
;
57 import jexer
.bits
.StringUtils
;
58 import jexer
.event
.TInputEvent
;
59 import jexer
.event
.TKeypressEvent
;
60 import jexer
.event
.TMouseEvent
;
61 import jexer
.io
.ReadTimeoutException
;
62 import jexer
.io
.TimeoutInputStream
;
63 import static jexer
.TKeypress
.*;
66 * This implements a complex ECMA-48/ISO 6429/ANSI X3.64 type console,
67 * including a scrollback buffer.
70 * It currently implements VT100, VT102, VT220, and XTERM with the following
74 * - The vttest scenario for VT220 8-bit controls (11.1.2.3) reports a
75 * failure with XTERM. This is due to vttest failing to decode the UTF-8
79 * - Smooth scrolling, printing, keyboard locking, keyboard leds, and tests
80 * from VT100 are not supported.
83 * - User-defined keys (DECUDK), downloadable fonts (DECDLD), and VT100/ANSI
84 * compatibility mode (DECSCL) from VT220 are not supported. (Also,
85 * because DECSCL is not supported, it will fail the last part of the
86 * vttest "Test of VT52 mode" if DeviceType is set to VT220.)
89 * - Numeric/application keys from the number pad are not supported because
90 * they are not exposed from the TKeypress API.
93 * - VT52 HOLD SCREEN mode is not supported.
96 * - In VT52 graphics mode, the 3/, 5/, and 7/ characters (fraction
97 * numerators) are not rendered correctly.
100 * - All data meant for the 'printer' (CSI Pc ? i) is discarded.
102 public class ECMA48
implements Runnable
{
104 // ------------------------------------------------------------------------
105 // Constants --------------------------------------------------------------
106 // ------------------------------------------------------------------------
109 * The emulator can emulate several kinds of terminals.
111 public enum DeviceType
{
113 * DEC VT100 but also including the three VT102 functions.
134 * Parser character scan states.
136 private enum ScanState
{
152 VT52_DIRECT_CURSOR_ADDRESS
156 * The selected number pad mode (DECKPAM, DECKPNM). We record this, but
157 * can't really use it in keypress() because we do not see number pad
158 * events from TKeypress.
160 private enum KeypadMode
{
166 * Arrow keys can emit three different sequences (DECCKM or VT52
169 private enum ArrowKeyMode
{
176 * Available character sets for GL, GR, G0, G1, G2, G3.
178 private enum CharacterSet
{
199 * Single-shift states used by the C1 control characters SS2 (0x8E) and
202 private enum Singleshift
{
209 * VT220+ lockshift states.
211 private enum LockshiftMode
{
221 * XTERM mouse reporting protocols.
223 public enum MouseProtocol
{
232 * XTERM mouse reporting encodings.
234 private enum MouseEncoding
{
240 // ------------------------------------------------------------------------
241 // Variables --------------------------------------------------------------
242 // ------------------------------------------------------------------------
245 * The enclosing listening object.
247 private DisplayListener displayListener
;
250 * When true, the reader thread is expected to exit.
252 private volatile boolean stopReaderThread
= false;
257 private Thread readerThread
= null;
260 * The type of emulator to be.
262 private final DeviceType type
;
265 * The scrollback buffer characters + attributes.
267 private volatile ArrayList
<DisplayLine
> scrollback
;
270 * The raw display buffer characters + attributes.
272 private volatile ArrayList
<DisplayLine
> display
;
275 * The maximum number of lines in the scrollback buffer.
277 private int maxScrollback
= 10000;
280 * The terminal's input. For type == XTERM, this is an InputStreamReader
281 * with UTF-8 encoding.
283 private Reader input
;
286 * The terminal's raw InputStream. This is used for type != XTERM.
288 private volatile TimeoutInputStream inputStream
;
291 * The terminal's output. For type == XTERM, this wraps an
292 * OutputStreamWriter with UTF-8 encoding.
294 private Writer output
;
297 * The terminal's raw OutputStream. This is used for type != XTERM.
299 private OutputStream outputStream
;
302 * Current scanning state.
304 private ScanState scanState
;
307 * Which mouse protocol is active.
309 private MouseProtocol mouseProtocol
= MouseProtocol
.OFF
;
312 * Which mouse encoding is active.
314 private MouseEncoding mouseEncoding
= MouseEncoding
.X10
;
317 * A terminal may request that the mouse pointer be hidden using a
318 * Privacy Message containing either "hideMousePointer" or
319 * "showMousePointer". This is currently only used within Jexer by
320 * TTerminalWindow so that only the bottom-most instance of nested
321 * Jexer's draws the mouse within its application window.
323 private boolean hideMousePointer
= false;
326 * Physical display width. We start at 80x24, but the user can resize us
329 private int width
= 80;
332 * Physical display height. We start at 80x24, but the user can resize
335 private int height
= 24;
338 * Top margin of the scrolling region.
340 private int scrollRegionTop
= 0;
343 * Bottom margin of the scrolling region.
345 private int scrollRegionBottom
= height
- 1;
348 * Right margin column number. This can be selected by the remote side
349 * to be 80/132 (rightMargin values 79/131), or it can be (width - 1).
351 private int rightMargin
= 79;
354 * Last character printed.
359 * VT100-style line wrapping: a character is placed in column 80 (or
360 * 132), but the line does NOT wrap until another character is written to
361 * column 1 of the next line, after which the cursor moves to column 2.
363 private boolean wrapLineFlag
= false;
366 * VT220 single shift flag.
368 private Singleshift singleshift
= Singleshift
.NONE
;
371 * true = insert characters, false = overwrite.
373 private boolean insertMode
= false;
376 * VT52 mode as selected by DECANM. True means VT52, false means
377 * ANSI. Default is ANSI.
379 private boolean vt52Mode
= false;
382 * Visible cursor (DECTCEM).
384 private boolean cursorVisible
= true;
387 * Screen title as set by the xterm OSC sequence. Lots of applications
388 * send a screenTitle regardless of whether it is an xterm client or not.
390 private String screenTitle
= "";
393 * Parameter characters being collected.
395 private List
<Integer
> csiParams
;
398 * Non-csi collect buffer.
400 private StringBuilder collectBuffer
= new StringBuilder(128);
403 * When true, use the G1 character set.
405 private boolean shiftOut
= false;
408 * Horizontal tab stop locations.
410 private List
<Integer
> tabStops
;
413 * S8C1T. True means 8bit controls, false means 7bit controls.
415 private boolean s8c1t
= false;
418 * Printer mode. True means send all output to printer, which discards
421 private boolean printerControllerMode
= false;
424 * LMN line mode. If true, linefeed() puts the cursor on the first
425 * column of the next line. If false, linefeed() puts the cursor one
426 * line down on the current line. The default is false.
428 private boolean newLineMode
= false;
431 * Whether arrow keys send ANSI, VT100, or VT52 sequences.
433 private ArrowKeyMode arrowKeyMode
;
436 * Whether number pad keys send VT100 or VT52, application or numeric
439 @SuppressWarnings("unused")
440 private KeypadMode keypadMode
;
443 * When true, the terminal is in 132-column mode (DECCOLM).
445 private boolean columns132
= false;
448 * true = reverse video. Set by DECSCNM.
450 private boolean reverseVideo
= false;
453 * false = echo characters locally.
455 private boolean fullDuplex
= true;
458 * The current terminal state.
460 private SaveableState currentState
;
463 * The last saved terminal state.
465 private SaveableState savedState
;
468 * The 88- or 256-color support RGB colors.
470 private List
<Integer
> colors88
;
473 * Sixel collection buffer.
475 private StringBuilder sixelParseBuffer
= new StringBuilder(2048);
478 * Sixel shared palette.
480 private HashMap
<Integer
, java
.awt
.Color
> sixelPalette
;
483 * The width of a character cell in pixels.
485 private int textWidth
= 16;
488 * The height of a character cell in pixels.
490 private int textHeight
= 20;
493 * The last used height of a character cell in pixels, only used for
496 private int lastTextHeight
= -1;
499 * The glyph drawer for full-width chars.
501 private GlyphMaker glyphMaker
= null;
504 * Input queue for keystrokes and mouse events to send to the remote
507 private ArrayList
<TInputEvent
> userQueue
= new ArrayList
<TInputEvent
>();
510 * DECSC/DECRC save/restore a subset of the total state. This class
511 * encapsulates those specific flags/modes.
513 private class SaveableState
{
516 * When true, cursor positions are relative to the scrolling region.
518 public boolean originMode
= false;
521 * The current editing X position.
523 public int cursorX
= 0;
526 * The current editing Y position.
528 public int cursorY
= 0;
531 * Which character set is currently selected in G0.
533 public CharacterSet g0Charset
= CharacterSet
.US
;
536 * Which character set is currently selected in G1.
538 public CharacterSet g1Charset
= CharacterSet
.DRAWING
;
541 * Which character set is currently selected in G2.
543 public CharacterSet g2Charset
= CharacterSet
.US
;
546 * Which character set is currently selected in G3.
548 public CharacterSet g3Charset
= CharacterSet
.US
;
551 * Which character set is currently selected in GR.
553 public CharacterSet grCharset
= CharacterSet
.DRAWING
;
556 * The current drawing attributes.
558 public CellAttributes attr
;
563 public LockshiftMode glLockshift
= LockshiftMode
.NONE
;
568 public LockshiftMode grLockshift
= LockshiftMode
.NONE
;
573 public boolean lineWrap
= true;
578 public void reset() {
582 g0Charset
= CharacterSet
.US
;
583 g1Charset
= CharacterSet
.DRAWING
;
584 g2Charset
= CharacterSet
.US
;
585 g3Charset
= CharacterSet
.US
;
586 grCharset
= CharacterSet
.DRAWING
;
587 attr
= new CellAttributes();
588 glLockshift
= LockshiftMode
.NONE
;
589 grLockshift
= LockshiftMode
.NONE
;
594 * Copy attributes from another instance.
596 * @param that the other instance to match
598 public void setTo(final SaveableState that
) {
599 this.originMode
= that
.originMode
;
600 this.cursorX
= that
.cursorX
;
601 this.cursorY
= that
.cursorY
;
602 this.g0Charset
= that
.g0Charset
;
603 this.g1Charset
= that
.g1Charset
;
604 this.g2Charset
= that
.g2Charset
;
605 this.g3Charset
= that
.g3Charset
;
606 this.grCharset
= that
.grCharset
;
607 this.attr
= new CellAttributes();
608 this.attr
.setTo(that
.attr
);
609 this.glLockshift
= that
.glLockshift
;
610 this.grLockshift
= that
.grLockshift
;
611 this.lineWrap
= that
.lineWrap
;
615 * Public constructor.
617 public SaveableState() {
622 // ------------------------------------------------------------------------
623 // Constructors -----------------------------------------------------------
624 // ------------------------------------------------------------------------
627 * Public constructor.
629 * @param type one of the DeviceType constants to select VT100, VT102,
631 * @param inputStream an InputStream connected to the remote side. For
632 * type == XTERM, inputStream is converted to a Reader with UTF-8
634 * @param outputStream an OutputStream connected to the remote user. For
635 * type == XTERM, outputStream is converted to a Writer with UTF-8
637 * @param displayListener a callback to the outer display, or null for
638 * default VT100 behavior
639 * @throws UnsupportedEncodingException if an exception is thrown when
640 * creating the InputStreamReader
642 public ECMA48(final DeviceType type
, final InputStream inputStream
,
643 final OutputStream outputStream
, final DisplayListener displayListener
)
644 throws UnsupportedEncodingException
{
646 assert (inputStream
!= null);
647 assert (outputStream
!= null);
649 csiParams
= new ArrayList
<Integer
>();
650 tabStops
= new ArrayList
<Integer
>();
651 scrollback
= new ArrayList
<DisplayLine
>();
652 display
= new ArrayList
<DisplayLine
>();
655 if (inputStream
instanceof TimeoutInputStream
) {
656 this.inputStream
= (TimeoutInputStream
)inputStream
;
658 this.inputStream
= new TimeoutInputStream(inputStream
, 2000);
660 if (type
== DeviceType
.XTERM
) {
661 this.input
= new InputStreamReader(new BufferedInputStream(
662 this.inputStream
, 1024 * 128), "UTF-8");
663 this.output
= new OutputStreamWriter(new
664 BufferedOutputStream(outputStream
), "UTF-8");
665 this.outputStream
= null;
668 this.outputStream
= new BufferedOutputStream(outputStream
);
670 this.displayListener
= displayListener
;
673 for (int i
= 0; i
< height
; i
++) {
674 display
.add(new DisplayLine(currentState
.attr
));
676 assert (currentState
.cursorY
< height
);
677 assert (currentState
.cursorX
< width
);
679 // Spin up the input reader
680 readerThread
= new Thread(this);
681 readerThread
.start();
684 // ------------------------------------------------------------------------
685 // Runnable ---------------------------------------------------------------
686 // ------------------------------------------------------------------------
689 * Read function runs on a separate thread.
691 public final void run() {
692 boolean utf8
= false;
693 boolean done
= false;
695 if (type
== DeviceType
.XTERM
) {
699 // available() will often return > 1, so we need to read in chunks to
701 char [] readBufferUTF8
= null;
702 byte [] readBuffer
= null;
704 readBufferUTF8
= new char[2048];
706 readBuffer
= new byte[2048];
709 while (!done
&& !stopReaderThread
) {
710 synchronized (userQueue
) {
711 while (userQueue
.size() > 0) {
712 handleUserEvent(userQueue
.remove(0));
717 int n
= inputStream
.available();
719 // System.err.printf("available() %d\n", n); System.err.flush();
721 if (readBufferUTF8
.length
< n
) {
722 // The buffer wasn't big enough, make it huger
723 int newSizeHalf
= Math
.max(readBufferUTF8
.length
,
726 readBufferUTF8
= new char[newSizeHalf
* 2];
729 if (readBuffer
.length
< n
) {
730 // The buffer wasn't big enough, make it huger
731 int newSizeHalf
= Math
.max(readBuffer
.length
, n
);
732 readBuffer
= new byte[newSizeHalf
* 2];
738 } catch (InterruptedException e
) {
747 rc
= input
.read(readBufferUTF8
, 0,
748 readBufferUTF8
.length
);
750 rc
= inputStream
.read(readBuffer
, 0,
753 } catch (ReadTimeoutException e
) {
757 // System.err.printf("read() %d\n", rc); System.err.flush();
762 // Don't step on UI events
763 synchronized (this) {
765 for (int i
= 0; i
< rc
;) {
766 int ch
= Character
.codePointAt(readBufferUTF8
,
768 i
+= Character
.charCount(ch
);
770 // Special case for VT10x: 7-bit characters
772 if ((type
== DeviceType
.VT100
)
773 || (type
== DeviceType
.VT102
)
781 for (int i
= 0; i
< rc
; i
++) {
782 // Special case for VT10x: 7-bit characters
784 if ((type
== DeviceType
.VT100
)
785 || (type
== DeviceType
.VT102
)
787 consume(readBuffer
[i
] & 0x7F);
789 consume(readBuffer
[i
]);
794 // Permit my enclosing UI to know that I updated.
795 if (displayListener
!= null) {
796 displayListener
.displayChanged();
799 // System.err.println("end while loop"); System.err.flush();
800 } catch (IOException e
) {
803 // This is an unusual case. We want to see the stack trace,
804 // but it is related to the spawned process rather than the
805 // actual UI. We will generate the stack trace, and consume
806 // it as though it was emitted by the shell.
807 CharArrayWriter writer
= new CharArrayWriter();
808 // Send a ST and RIS to clear the emulator state.
810 writer
.write("\033\\\033c");
811 writer
.write("\n-----------------------------------\n");
812 e
.printStackTrace(new PrintWriter(writer
));
813 writer
.write("\n-----------------------------------\n");
814 } catch (IOException e2
) {
817 char [] stackTrace
= writer
.toCharArray();
818 for (int i
= 0; i
< stackTrace
.length
; i
++) {
819 if (stackTrace
[i
] == '\n') {
822 consume(stackTrace
[i
]);
826 } // while ((done == false) && (stopReaderThread == false))
828 // Let the rest of the world know that I am done.
829 stopReaderThread
= true;
832 inputStream
.cancelRead();
835 } catch (IOException e
) {
841 } catch (IOException e
) {
845 // Permit my enclosing UI to know that I updated.
846 if (displayListener
!= null) {
847 displayListener
.displayChanged();
850 // System.err.println("*** run() exiting..."); System.err.flush();
853 // ------------------------------------------------------------------------
854 // ECMA48 -----------------------------------------------------------------
855 // ------------------------------------------------------------------------
858 * Process keyboard and mouse events from the user.
860 * @param event the input event to consume
862 private void handleUserEvent(final TInputEvent event
) {
863 if (event
instanceof TKeypressEvent
) {
864 keypress(((TKeypressEvent
) event
).getKey());
866 if (event
instanceof TMouseEvent
) {
867 mouse((TMouseEvent
) event
);
872 * Add a keyboard and mouse event from the user to the queue.
874 * @param event the input event to consume
876 public void addUserEvent(final TInputEvent event
) {
877 synchronized (userQueue
) {
878 userQueue
.add(event
);
883 * Return the proper primary Device Attributes string.
885 * @return string to send to remote side that is appropriate for the
888 private String
deviceTypeResponse() {
891 // "I am a VT100 with advanced video option" (often VT102)
900 // "I am a VT220" - 7 bit version, with sixel and Jexer image
903 return "\033[?62;1;6;9;4;22;444c";
905 // "I am a VT220" - 8 bit version, with sixel and Jexer image
907 return "\u009b?62;1;6;9;4;22;444c";
909 throw new IllegalArgumentException("Invalid device type: " + type
);
914 * Return the proper TERM environment variable for this device type.
916 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
917 * @return "vt100", "xterm", etc.
919 public static String
deviceTypeTerm(final DeviceType deviceType
) {
920 switch (deviceType
) {
934 throw new IllegalArgumentException("Invalid device type: "
940 * Return the proper LANG for this device type. Only XTERM devices know
941 * about UTF-8, the others are defined by their standard to be either
942 * 7-bit or 8-bit characters only.
944 * @param deviceType DeviceType.VT100, DeviceType, XTERM, etc.
945 * @param baseLang a base language without UTF-8 flag such as "C" or
947 * @return "en_US", "en_US.UTF-8", etc.
949 public static String
deviceTypeLang(final DeviceType deviceType
,
950 final String baseLang
) {
952 switch (deviceType
) {
960 return baseLang
+ ".UTF-8";
963 throw new IllegalArgumentException("Invalid device type: "
969 * Write a string directly to the remote side.
971 * @param str string to send
973 public void writeRemote(final String str
) {
974 if (stopReaderThread
) {
975 // Reader hit EOF, bail out now.
980 // System.err.printf("writeRemote() '%s'\n", str);
986 if (outputStream
== null) {
990 outputStream
.flush();
991 for (int i
= 0; i
< str
.length(); i
++) {
992 outputStream
.write(str
.charAt(i
));
994 outputStream
.flush();
995 } catch (IOException e
) {
1001 if (output
== null) {
1008 } catch (IOException e
) {
1014 throw new IllegalArgumentException("Invalid device type: " + type
);
1019 * Close the input and output streams and stop the reader thread. Note
1020 * that it is safe to call this multiple times.
1022 public final void close() {
1024 // Tell the reader thread to stop looking at input. It will close
1025 // the input streams.
1026 if (stopReaderThread
== false) {
1027 stopReaderThread
= true;
1029 readerThread
.join(1000);
1030 } catch (InterruptedException e
) {
1035 // Now close the output stream.
1040 if (outputStream
!= null) {
1042 outputStream
.close();
1043 } catch (IOException e
) {
1046 outputStream
= null;
1050 if (outputStream
!= null) {
1052 outputStream
.close();
1053 } catch (IOException e
) {
1056 outputStream
= null;
1058 if (output
!= null) {
1061 } catch (IOException e
) {
1068 throw new IllegalArgumentException("Invalid device type: " +
1074 * See if the reader thread is still running.
1076 * @return if true, we are still connected to / reading from the remote
1079 public final boolean isReading() {
1080 return (!stopReaderThread
);
1084 * Obtain a new blank display line for an external user
1085 * (e.g. TTerminalWindow).
1087 * @return new blank line
1089 public final DisplayLine
getBlankDisplayLine() {
1090 return new DisplayLine(currentState
.attr
);
1094 * Get the scrollback buffer.
1096 * @return the scrollback buffer
1098 public final List
<DisplayLine
> getScrollbackBuffer() {
1103 * Get the display buffer.
1105 * @return the display buffer
1107 public final List
<DisplayLine
> getDisplayBuffer() {
1112 * Get the visible display + scrollback buffer, offset by a specified
1113 * number of rows from the bottom.
1115 * @param visibleHeight the total height of the display to show
1116 * @param scrollBottom the number of rows from the bottom to scroll back
1117 * @return a copy of the display + scrollback buffers
1119 public final List
<DisplayLine
> getVisibleDisplay(final int visibleHeight
,
1120 final int scrollBottom
) {
1122 assert (visibleHeight
>= 0);
1123 assert (scrollBottom
>= 0);
1125 int visibleBottom
= scrollback
.size() + display
.size() - scrollBottom
;
1127 List
<DisplayLine
> preceedingBlankLines
= new ArrayList
<DisplayLine
>();
1128 int visibleTop
= visibleBottom
- visibleHeight
;
1129 if (visibleTop
< 0) {
1130 for (int i
= visibleTop
; i
< 0; i
++) {
1131 preceedingBlankLines
.add(getBlankDisplayLine());
1135 assert (visibleTop
>= 0);
1137 List
<DisplayLine
> displayLines
= new ArrayList
<DisplayLine
>();
1138 displayLines
.addAll(scrollback
);
1139 displayLines
.addAll(display
);
1141 List
<DisplayLine
> visibleLines
= new ArrayList
<DisplayLine
>();
1142 visibleLines
.addAll(preceedingBlankLines
);
1143 visibleLines
.addAll(displayLines
.subList(visibleTop
, visibleBottom
));
1145 // Fill in the blank lines on bottom
1146 int bottomBlankLines
= visibleHeight
- visibleLines
.size();
1147 assert (bottomBlankLines
>= 0);
1148 for (int i
= 0; i
< bottomBlankLines
; i
++) {
1149 visibleLines
.add(getBlankDisplayLine());
1152 return copyBuffer(visibleLines
);
1156 * Copy a display buffer.
1158 * @param buffer the buffer to copy
1159 * @return a deep copy of the buffer's data
1161 private List
<DisplayLine
> copyBuffer(final List
<DisplayLine
> buffer
) {
1162 ArrayList
<DisplayLine
> result
= new ArrayList
<DisplayLine
>(buffer
.size());
1163 for (DisplayLine line
: buffer
) {
1164 result
.add(new DisplayLine(line
));
1170 * Get the display width.
1172 * @return the width (usually 80 or 132)
1174 public final int getWidth() {
1179 * Set the display width.
1181 * @param width the new width
1183 public final synchronized void setWidth(final int width
) {
1185 rightMargin
= width
- 1;
1186 if (currentState
.cursorX
>= width
) {
1187 currentState
.cursorX
= width
- 1;
1189 if (savedState
.cursorX
>= width
) {
1190 savedState
.cursorX
= width
- 1;
1195 * Get the display height.
1197 * @return the height (usually 24)
1199 public final int getHeight() {
1204 * Set the display height.
1206 * @param height the new height
1208 public final synchronized void setHeight(final int height
) {
1209 int delta
= height
- this.height
;
1210 this.height
= height
;
1211 scrollRegionBottom
+= delta
;
1212 if ((scrollRegionBottom
< 0) || (scrollRegionTop
> height
- 1)) {
1213 scrollRegionBottom
= height
- 1;
1215 if (scrollRegionTop
>= scrollRegionBottom
) {
1216 scrollRegionTop
= 0;
1218 if (currentState
.cursorY
>= height
) {
1219 currentState
.cursorY
= height
- 1;
1221 if (savedState
.cursorY
>= height
) {
1222 savedState
.cursorY
= height
- 1;
1224 while (display
.size() < height
) {
1225 DisplayLine line
= new DisplayLine(currentState
.attr
);
1226 line
.setReverseColor(reverseVideo
);
1229 while (display
.size() > height
) {
1230 scrollback
.add(display
.remove(0));
1235 * Get visible cursor flag.
1237 * @return if true, the cursor is visible
1239 public final boolean isCursorVisible() {
1240 return cursorVisible
;
1244 * Get the screen title as set by the xterm OSC sequence. Lots of
1245 * applications send a screenTitle regardless of whether it is an xterm
1248 * @return screen title
1250 public final String
getScreenTitle() {
1255 * Get 132 columns value.
1257 * @return if true, the terminal is in 132 column mode
1259 public final boolean isColumns132() {
1264 * Clear the CSI parameters and flags.
1266 private void toGround() {
1268 collectBuffer
.setLength(0);
1269 scanState
= ScanState
.GROUND
;
1273 * Reset the tab stops list.
1275 private void resetTabStops() {
1277 for (int i
= 0; (i
* 8) <= rightMargin
; i
++) {
1278 tabStops
.add(Integer
.valueOf(i
* 8));
1283 * Reset the 88- or 256-colors.
1285 private void resetColors() {
1286 colors88
= new ArrayList
<Integer
>(256);
1287 for (int i
= 0; i
< 256; i
++) {
1291 // Set default system colors.
1292 colors88
.set(0, 0x00000000);
1293 colors88
.set(1, 0x00a80000);
1294 colors88
.set(2, 0x0000a800);
1295 colors88
.set(3, 0x00a85400);
1296 colors88
.set(4, 0x000000a8);
1297 colors88
.set(5, 0x00a800a8);
1298 colors88
.set(6, 0x0000a8a8);
1299 colors88
.set(7, 0x00a8a8a8);
1301 colors88
.set(8, 0x00545454);
1302 colors88
.set(9, 0x00fc5454);
1303 colors88
.set(10, 0x0054fc54);
1304 colors88
.set(11, 0x00fcfc54);
1305 colors88
.set(12, 0x005454fc);
1306 colors88
.set(13, 0x00fc54fc);
1307 colors88
.set(14, 0x0054fcfc);
1308 colors88
.set(15, 0x00fcfcfc);
1312 * Get the RGB value of one of the indexed colors.
1314 * @param index the color index
1315 * @return the RGB value
1317 private int get88Color(final int index
) {
1318 // System.err.print("get88Color: " + index);
1319 if ((index
< 0) || (index
> colors88
.size())) {
1320 // System.err.println(" -- UNKNOWN");
1323 // System.err.printf(" %08x\n", colors88.get(index));
1324 return colors88
.get(index
);
1328 * Set one of the indexed colors to a color specification.
1330 * @param index the color index
1331 * @param spec the specification, typically something like "rgb:aa/bb/cc"
1333 private void set88Color(final int index
, final String spec
) {
1334 // System.err.println("set88Color: " + index + " '" + spec + "'");
1336 if ((index
< 0) || (index
> colors88
.size())) {
1339 if (spec
.startsWith("rgb:")) {
1340 String
[] rgbTokens
= spec
.substring(4).split("/");
1341 if (rgbTokens
.length
== 3) {
1343 int rgb
= (Integer
.parseInt(rgbTokens
[0], 16) << 16);
1344 rgb
|= Integer
.parseInt(rgbTokens
[1], 16) << 8;
1345 rgb
|= Integer
.parseInt(rgbTokens
[2], 16);
1346 // System.err.printf(" set to %08x\n", rgb);
1347 colors88
.set(index
, rgb
);
1348 } catch (NumberFormatException e
) {
1355 if (spec
.toLowerCase().equals("black")) {
1356 colors88
.set(index
, 0x00000000);
1357 } else if (spec
.toLowerCase().equals("red")) {
1358 colors88
.set(index
, 0x00a80000);
1359 } else if (spec
.toLowerCase().equals("green")) {
1360 colors88
.set(index
, 0x0000a800);
1361 } else if (spec
.toLowerCase().equals("yellow")) {
1362 colors88
.set(index
, 0x00a85400);
1363 } else if (spec
.toLowerCase().equals("blue")) {
1364 colors88
.set(index
, 0x000000a8);
1365 } else if (spec
.toLowerCase().equals("magenta")) {
1366 colors88
.set(index
, 0x00a800a8);
1367 } else if (spec
.toLowerCase().equals("cyan")) {
1368 colors88
.set(index
, 0x0000a8a8);
1369 } else if (spec
.toLowerCase().equals("white")) {
1370 colors88
.set(index
, 0x00a8a8a8);
1376 * Reset the emulation state.
1378 private void reset() {
1380 currentState
= new SaveableState();
1381 savedState
= new SaveableState();
1382 scanState
= ScanState
.GROUND
;
1383 if (displayListener
!= null) {
1384 width
= displayListener
.getDisplayWidth();
1385 height
= displayListener
.getDisplayHeight();
1390 scrollRegionTop
= 0;
1391 scrollRegionBottom
= height
- 1;
1392 rightMargin
= width
- 1;
1393 newLineMode
= false;
1394 arrowKeyMode
= ArrowKeyMode
.ANSI
;
1395 keypadMode
= KeypadMode
.Numeric
;
1396 wrapLineFlag
= false;
1403 newLineMode
= false;
1404 reverseVideo
= false;
1406 cursorVisible
= true;
1409 singleshift
= Singleshift
.NONE
;
1411 printerControllerMode
= false;
1414 mouseProtocol
= MouseProtocol
.OFF
;
1415 mouseEncoding
= MouseEncoding
.X10
;
1420 // Reset extra colors
1428 * Append a new line to the bottom of the display, adding lines off the
1429 * top to the scrollback buffer.
1431 private void newDisplayLine() {
1432 // Scroll the top line off into the scrollback buffer
1433 scrollback
.add(display
.get(0));
1434 if (scrollback
.size() > maxScrollback
) {
1435 scrollback
.remove(0);
1436 scrollback
.trimToSize();
1439 display
.trimToSize();
1440 DisplayLine line
= new DisplayLine(currentState
.attr
);
1441 line
.setReverseColor(reverseVideo
);
1446 * Wraps the current line.
1448 private void wrapCurrentLine() {
1449 if (currentState
.cursorY
== height
- 1) {
1452 if (currentState
.cursorY
< height
- 1) {
1453 currentState
.cursorY
++;
1455 currentState
.cursorX
= 0;
1459 * Handle a carriage return.
1461 private void carriageReturn() {
1462 currentState
.cursorX
= 0;
1463 wrapLineFlag
= false;
1467 * Reverse the color of the visible display.
1469 private void invertDisplayColors() {
1470 for (DisplayLine line
: display
) {
1471 line
.setReverseColor(!line
.isReverseColor());
1476 * Handle a linefeed.
1478 private void linefeed() {
1479 if (currentState
.cursorY
< scrollRegionBottom
) {
1480 // Increment screen y
1481 currentState
.cursorY
++;
1484 // Screen y does not increment
1487 * Two cases: either we're inside a scrolling region or not. If
1488 * the scrolling region bottom is the bottom of the screen, then
1489 * push the top line into the buffer. Else scroll the scrolling
1492 if ((scrollRegionBottom
== height
- 1) && (scrollRegionTop
== 0)) {
1494 // We're at the bottom of the scroll region, AND the scroll
1495 // region is the entire screen.
1501 // We're at the bottom of the scroll region, AND the scroll
1502 // region is NOT the entire screen.
1503 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
1508 currentState
.cursorX
= 0;
1510 wrapLineFlag
= false;
1514 * Prints one character to the display buffer.
1516 * @param ch character to display
1518 private void printCharacter(final int ch
) {
1519 int rightMargin
= this.rightMargin
;
1521 if (StringUtils
.width(ch
) == 2) {
1522 // This is a full-width character. Save two spaces, and then
1523 // draw the character as two image halves.
1524 int x0
= currentState
.cursorX
;
1525 int y0
= currentState
.cursorY
;
1526 printCharacter(' ');
1527 printCharacter(' ');
1528 if ((currentState
.cursorX
== x0
+ 2)
1529 && (currentState
.cursorY
== y0
)
1531 // We can draw both halves of the character.
1532 drawHalves(x0
, y0
, x0
+ 1, y0
, ch
);
1533 } else if ((currentState
.cursorX
== x0
+ 1)
1534 && (currentState
.cursorY
== y0
)
1536 // VT100 line wrap behavior: we should be at the right
1537 // margin. We can draw both halves of the character.
1538 drawHalves(x0
, y0
, x0
+ 1, y0
, ch
);
1540 // The character splits across the line. Draw the entire
1541 // character on the new line, giving one more space for it.
1542 x0
= currentState
.cursorX
- 1;
1543 y0
= currentState
.cursorY
;
1544 printCharacter(' ');
1545 drawHalves(x0
, y0
, x0
+ 1, y0
, ch
);
1550 // Check if we have double-width, and if so chop at 40/66 instead of
1552 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
1553 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
1556 // Check the unusually-complicated line wrapping conditions...
1557 if (currentState
.cursorX
== rightMargin
) {
1559 if (currentState
.lineWrap
== true) {
1561 * This case happens when: the cursor was already on the
1562 * right margin (either through printing or by an explicit
1563 * placement command), and a character was printed.
1565 * The line wraps only when a new character arrives AND the
1566 * cursor is already on the right margin AND has placed a
1567 * character in its cell. Easier to see than to explain.
1569 if (wrapLineFlag
== false) {
1571 * This block marks the case that we are in the margin
1572 * and the first character has been received and printed.
1574 wrapLineFlag
= true;
1577 * This block marks the case that we are in the margin
1578 * and the second character has been received and
1581 wrapLineFlag
= false;
1585 } else if (currentState
.cursorX
<= rightMargin
) {
1587 * This is the normal case: a character came in and was printed
1588 * to the left of the right margin column.
1591 // Turn off VT100 special-case flag
1592 wrapLineFlag
= false;
1595 // "Print" the character
1596 Cell newCell
= new Cell(ch
);
1597 CellAttributes newCellAttributes
= (CellAttributes
) newCell
;
1598 newCellAttributes
.setTo(currentState
.attr
);
1599 DisplayLine line
= display
.get(currentState
.cursorY
);
1601 if (StringUtils
.width(ch
) == 1) {
1602 // Insert mode special case
1603 if (insertMode
== true) {
1604 line
.insert(currentState
.cursorX
, newCell
);
1606 // Replace an existing character
1607 line
.replace(currentState
.cursorX
, newCell
);
1610 // Increment horizontal
1611 if (wrapLineFlag
== false) {
1612 currentState
.cursorX
++;
1613 if (currentState
.cursorX
> rightMargin
) {
1614 currentState
.cursorX
--;
1621 * Translate the mouse event to a VT100, VT220, or XTERM sequence and
1622 * send to the remote side.
1624 * @param mouse mouse event received from the local user
1626 private void mouse(final TMouseEvent mouse
) {
1629 System.err.printf("mouse(): protocol %s encoding %s mouse %s\n",
1630 mouseProtocol, mouseEncoding, mouse);
1633 if (mouseEncoding
== MouseEncoding
.X10
) {
1634 // We will support X10 but only for (160,94) and smaller.
1635 if ((mouse
.getX() >= 160) || (mouse
.getY() >= 94)) {
1640 switch (mouseProtocol
) {
1647 // Only report button presses
1648 if (mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
) {
1654 // Only report button presses and releases
1655 if ((mouse
.getType() != TMouseEvent
.Type
.MOUSE_DOWN
)
1656 && (mouse
.getType() != TMouseEvent
.Type
.MOUSE_UP
)
1664 * Only report button presses, button releases, and motions that
1665 * have a button down (i.e. drag-and-drop).
1667 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1668 if (!mouse
.isMouse1()
1669 && !mouse
.isMouse2()
1670 && !mouse
.isMouse3()
1671 && !mouse
.isMouseWheelUp()
1672 && !mouse
.isMouseWheelDown()
1680 // Report everything
1684 // Now encode the event
1685 StringBuilder sb
= new StringBuilder(6);
1686 if (mouseEncoding
== MouseEncoding
.SGR
) {
1687 sb
.append((char) 0x1B);
1690 if (mouse
.isMouse1()) {
1691 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1696 } else if (mouse
.isMouse2()) {
1697 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1702 } else if (mouse
.isMouse3()) {
1703 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1708 } else if (mouse
.isMouseWheelUp()) {
1710 } else if (mouse
.isMouseWheelDown()) {
1713 // This is motion with no buttons down.
1717 sb
.append(String
.format("%d;%d", mouse
.getX() + 1,
1720 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1727 // X10 and UTF8 encodings
1728 sb
.append((char) 0x1B);
1731 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1732 sb
.append((char) (0x03 + 32));
1733 } else if (mouse
.isMouse1()) {
1734 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1735 sb
.append((char) (0x00 + 32 + 32));
1737 sb
.append((char) (0x00 + 32));
1739 } else if (mouse
.isMouse2()) {
1740 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1741 sb
.append((char) (0x01 + 32 + 32));
1743 sb
.append((char) (0x01 + 32));
1745 } else if (mouse
.isMouse3()) {
1746 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1747 sb
.append((char) (0x02 + 32 + 32));
1749 sb
.append((char) (0x02 + 32));
1751 } else if (mouse
.isMouseWheelUp()) {
1752 sb
.append((char) (0x04 + 64));
1753 } else if (mouse
.isMouseWheelDown()) {
1754 sb
.append((char) (0x05 + 64));
1756 // This is motion with no buttons down.
1757 sb
.append((char) (0x03 + 32));
1760 sb
.append((char) (mouse
.getX() + 33));
1761 sb
.append((char) (mouse
.getY() + 33));
1764 // System.err.printf("Would write: \'%s\'\n", sb.toString());
1765 writeRemote(sb
.toString());
1769 * Translate the keyboard press to a VT100, VT220, or XTERM sequence and
1770 * send to the remote side.
1772 * @param keypress keypress received from the local user
1774 private void keypress(final TKeypress keypress
) {
1775 writeRemote(keypressToString(keypress
));
1779 * Build one of the complex xterm keystroke sequences, storing the result in
1780 * xterm_keystroke_buffer.
1782 * @param ss3 the prefix to use based on VT100 state.
1783 * @param first the first character, usually a number.
1784 * @param first the last character, one of the following: ~ A B C D F H
1785 * @param ctrl whether or not ctrl is down
1786 * @param alt whether or not alt is down
1787 * @param shift whether or not shift is down
1788 * @return the buffer with the full key sequence
1790 private String
xtermBuildKeySequence(final String ss3
, final char first
,
1791 final char last
, boolean ctrl
, boolean alt
, boolean shift
) {
1793 StringBuilder sb
= new StringBuilder(ss3
);
1794 if ((last
== '~') || (ctrl
== true) || (alt
== true)
1798 if ( (ctrl
== false) && (alt
== false) && (shift
== true)) {
1800 } else if ((ctrl
== false) && (alt
== true) && (shift
== false)) {
1802 } else if ((ctrl
== false) && (alt
== true) && (shift
== true)) {
1804 } else if ((ctrl
== true) && (alt
== false) && (shift
== false)) {
1806 } else if ((ctrl
== true) && (alt
== false) && (shift
== true)) {
1808 } else if ((ctrl
== true) && (alt
== true) && (shift
== false)) {
1810 } else if ((ctrl
== true) && (alt
== true) && (shift
== true)) {
1815 return sb
.toString();
1819 * Translate the keyboard press to a VT100, VT220, or XTERM sequence.
1821 * @param keypress keypress received from the local user
1822 * @return string to transmit to the remote side
1824 @SuppressWarnings("fallthrough")
1825 private String
keypressToString(final TKeypress keypress
) {
1827 if ((fullDuplex
== false) && (!keypress
.isFnKey())) {
1829 * If this is a control character, process it like it came from
1832 if (keypress
.getChar() < 0x20) {
1833 handleControlChar((char) keypress
.getChar());
1835 // Local echo for everything else
1836 printCharacter(keypress
.getChar());
1838 if (displayListener
!= null) {
1839 displayListener
.displayChanged();
1843 if ((newLineMode
== true) && (keypress
.equals(kbEnter
))) {
1848 // Handle control characters
1849 if ((keypress
.isCtrl()) && (!keypress
.isFnKey())) {
1850 StringBuilder sb
= new StringBuilder();
1851 int ch
= keypress
.getChar();
1853 sb
.append(Character
.toChars(ch
));
1854 return sb
.toString();
1857 // Handle alt characters
1858 if ((keypress
.isAlt()) && (!keypress
.isFnKey())) {
1859 StringBuilder sb
= new StringBuilder("\033");
1860 int ch
= keypress
.getChar();
1861 sb
.append(Character
.toChars(ch
));
1862 return sb
.toString();
1865 if (keypress
.equals(kbBackspaceDel
)) {
1878 if (keypress
.equalsWithoutModifiers(kbLeft
)) {
1881 switch (arrowKeyMode
) {
1883 return xtermBuildKeySequence("\033[", '1', 'D',
1884 keypress
.isCtrl(), keypress
.isAlt(),
1885 keypress
.isShift());
1887 return xtermBuildKeySequence("\033", '1', 'D',
1888 keypress
.isCtrl(), keypress
.isAlt(),
1889 keypress
.isShift());
1891 return xtermBuildKeySequence("\033O", '1', 'D',
1892 keypress
.isCtrl(), keypress
.isAlt(),
1893 keypress
.isShift());
1896 switch (arrowKeyMode
) {
1907 if (keypress
.equalsWithoutModifiers(kbRight
)) {
1910 switch (arrowKeyMode
) {
1912 return xtermBuildKeySequence("\033[", '1', 'C',
1913 keypress
.isCtrl(), keypress
.isAlt(),
1914 keypress
.isShift());
1916 return xtermBuildKeySequence("\033", '1', 'C',
1917 keypress
.isCtrl(), keypress
.isAlt(),
1918 keypress
.isShift());
1920 return xtermBuildKeySequence("\033O", '1', 'C',
1921 keypress
.isCtrl(), keypress
.isAlt(),
1922 keypress
.isShift());
1925 switch (arrowKeyMode
) {
1936 if (keypress
.equalsWithoutModifiers(kbUp
)) {
1939 switch (arrowKeyMode
) {
1941 return xtermBuildKeySequence("\033[", '1', 'A',
1942 keypress
.isCtrl(), keypress
.isAlt(),
1943 keypress
.isShift());
1945 return xtermBuildKeySequence("\033", '1', 'A',
1946 keypress
.isCtrl(), keypress
.isAlt(),
1947 keypress
.isShift());
1949 return xtermBuildKeySequence("\033O", '1', 'A',
1950 keypress
.isCtrl(), keypress
.isAlt(),
1951 keypress
.isShift());
1954 switch (arrowKeyMode
) {
1965 if (keypress
.equalsWithoutModifiers(kbDown
)) {
1968 switch (arrowKeyMode
) {
1970 return xtermBuildKeySequence("\033[", '1', 'B',
1971 keypress
.isCtrl(), keypress
.isAlt(),
1972 keypress
.isShift());
1974 return xtermBuildKeySequence("\033", '1', 'B',
1975 keypress
.isCtrl(), keypress
.isAlt(),
1976 keypress
.isShift());
1978 return xtermBuildKeySequence("\033O", '1', 'B',
1979 keypress
.isCtrl(), keypress
.isAlt(),
1980 keypress
.isShift());
1983 switch (arrowKeyMode
) {
1994 if (keypress
.equalsWithoutModifiers(kbHome
)) {
1997 switch (arrowKeyMode
) {
1999 return xtermBuildKeySequence("\033[", '1', 'H',
2000 keypress
.isCtrl(), keypress
.isAlt(),
2001 keypress
.isShift());
2003 return xtermBuildKeySequence("\033", '1', 'H',
2004 keypress
.isCtrl(), keypress
.isAlt(),
2005 keypress
.isShift());
2007 return xtermBuildKeySequence("\033O", '1', 'H',
2008 keypress
.isCtrl(), keypress
.isAlt(),
2009 keypress
.isShift());
2012 switch (arrowKeyMode
) {
2023 if (keypress
.equalsWithoutModifiers(kbEnd
)) {
2026 switch (arrowKeyMode
) {
2028 return xtermBuildKeySequence("\033[", '1', 'F',
2029 keypress
.isCtrl(), keypress
.isAlt(),
2030 keypress
.isShift());
2032 return xtermBuildKeySequence("\033", '1', 'F',
2033 keypress
.isCtrl(), keypress
.isAlt(),
2034 keypress
.isShift());
2036 return xtermBuildKeySequence("\033O", '1', 'F',
2037 keypress
.isCtrl(), keypress
.isAlt(),
2038 keypress
.isShift());
2041 switch (arrowKeyMode
) {
2052 if (keypress
.equals(kbF1
)) {
2060 if (keypress
.equals(kbF2
)) {
2068 if (keypress
.equals(kbF3
)) {
2076 if (keypress
.equals(kbF4
)) {
2084 if (keypress
.equals(kbF5
)) {
2097 if (keypress
.equals(kbF6
)) {
2110 if (keypress
.equals(kbF7
)) {
2123 if (keypress
.equals(kbF8
)) {
2136 if (keypress
.equals(kbF9
)) {
2149 if (keypress
.equals(kbF10
)) {
2162 if (keypress
.equals(kbF11
)) {
2166 if (keypress
.equals(kbF12
)) {
2170 if (keypress
.equals(kbShiftF1
)) {
2175 if (type
== DeviceType
.XTERM
) {
2181 if (keypress
.equals(kbShiftF2
)) {
2186 if (type
== DeviceType
.XTERM
) {
2192 if (keypress
.equals(kbShiftF3
)) {
2197 if (type
== DeviceType
.XTERM
) {
2203 if (keypress
.equals(kbShiftF4
)) {
2208 if (type
== DeviceType
.XTERM
) {
2214 if (keypress
.equals(kbShiftF5
)) {
2216 return "\033[15;2~";
2219 if (keypress
.equals(kbShiftF6
)) {
2221 return "\033[17;2~";
2224 if (keypress
.equals(kbShiftF7
)) {
2226 return "\033[18;2~";
2229 if (keypress
.equals(kbShiftF8
)) {
2231 return "\033[19;2~";
2234 if (keypress
.equals(kbShiftF9
)) {
2236 return "\033[20;2~";
2239 if (keypress
.equals(kbShiftF10
)) {
2241 return "\033[21;2~";
2244 if (keypress
.equals(kbShiftF11
)) {
2246 return "\033[23;2~";
2249 if (keypress
.equals(kbShiftF12
)) {
2251 return "\033[24;2~";
2254 if (keypress
.equals(kbCtrlF1
)) {
2259 if (type
== DeviceType
.XTERM
) {
2265 if (keypress
.equals(kbCtrlF2
)) {
2270 if (type
== DeviceType
.XTERM
) {
2276 if (keypress
.equals(kbCtrlF3
)) {
2281 if (type
== DeviceType
.XTERM
) {
2287 if (keypress
.equals(kbCtrlF4
)) {
2292 if (type
== DeviceType
.XTERM
) {
2298 if (keypress
.equals(kbCtrlF5
)) {
2300 return "\033[15;5~";
2303 if (keypress
.equals(kbCtrlF6
)) {
2305 return "\033[17;5~";
2308 if (keypress
.equals(kbCtrlF7
)) {
2310 return "\033[18;5~";
2313 if (keypress
.equals(kbCtrlF8
)) {
2315 return "\033[19;5~";
2318 if (keypress
.equals(kbCtrlF9
)) {
2320 return "\033[20;5~";
2323 if (keypress
.equals(kbCtrlF10
)) {
2325 return "\033[21;5~";
2328 if (keypress
.equals(kbCtrlF11
)) {
2330 return "\033[23;5~";
2333 if (keypress
.equals(kbCtrlF12
)) {
2335 return "\033[24;5~";
2338 if (keypress
.equalsWithoutModifiers(kbPgUp
)) {
2341 return xtermBuildKeySequence("\033[", '5', '~',
2342 keypress
.isCtrl(), keypress
.isAlt(),
2343 keypress
.isShift());
2349 if (keypress
.equalsWithoutModifiers(kbPgDn
)) {
2352 return xtermBuildKeySequence("\033[", '6', '~',
2353 keypress
.isCtrl(), keypress
.isAlt(),
2354 keypress
.isShift());
2360 if (keypress
.equalsWithoutModifiers(kbIns
)) {
2363 return xtermBuildKeySequence("\033[", '2', '~',
2364 keypress
.isCtrl(), keypress
.isAlt(),
2365 keypress
.isShift());
2371 if (keypress
.equalsWithoutModifiers(kbDel
)) {
2374 return xtermBuildKeySequence("\033[", '3', '~',
2375 keypress
.isCtrl(), keypress
.isAlt(),
2376 keypress
.isShift());
2378 // Delete sends real delete for VTxxx
2383 if (keypress
.equals(kbEnter
)) {
2387 if (keypress
.equals(kbEsc
)) {
2391 if (keypress
.equals(kbAltEsc
)) {
2395 if (keypress
.equals(kbTab
)) {
2399 if ((keypress
.equalsWithoutModifiers(kbBackTab
)) ||
2400 (keypress
.equals(kbShiftTab
))
2410 // Non-alt, non-ctrl characters
2411 if (!keypress
.isFnKey()) {
2412 StringBuilder sb
= new StringBuilder();
2413 sb
.append(Character
.toChars(keypress
.getChar()));
2414 return sb
.toString();
2420 * Map a symbol in any one of the VT100/VT220 character sets to a Unicode
2423 * @param ch 8-bit character from the remote side
2424 * @param charsetGl character set defined for GL
2425 * @param charsetGr character set defined for GR
2426 * @return character to display on the screen
2428 private char mapCharacterCharset(final int ch
,
2429 final CharacterSet charsetGl
,
2430 final CharacterSet charsetGr
) {
2432 int lookupChar
= ch
;
2433 CharacterSet lookupCharset
= charsetGl
;
2436 assert ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
));
2437 lookupCharset
= charsetGr
;
2441 switch (lookupCharset
) {
2444 return DECCharacterSets
.SPECIAL_GRAPHICS
[lookupChar
];
2447 return DECCharacterSets
.UK
[lookupChar
];
2450 return DECCharacterSets
.US_ASCII
[lookupChar
];
2453 return DECCharacterSets
.NL
[lookupChar
];
2456 return DECCharacterSets
.FI
[lookupChar
];
2459 return DECCharacterSets
.FR
[lookupChar
];
2462 return DECCharacterSets
.FR_CA
[lookupChar
];
2465 return DECCharacterSets
.DE
[lookupChar
];
2468 return DECCharacterSets
.IT
[lookupChar
];
2471 return DECCharacterSets
.NO
[lookupChar
];
2474 return DECCharacterSets
.ES
[lookupChar
];
2477 return DECCharacterSets
.SV
[lookupChar
];
2480 return DECCharacterSets
.SWISS
[lookupChar
];
2482 case DEC_SUPPLEMENTAL
:
2483 return DECCharacterSets
.DEC_SUPPLEMENTAL
[lookupChar
];
2486 return DECCharacterSets
.VT52_SPECIAL_GRAPHICS
[lookupChar
];
2489 return DECCharacterSets
.US_ASCII
[lookupChar
];
2492 return DECCharacterSets
.US_ASCII
[lookupChar
];
2495 throw new IllegalArgumentException("Invalid character set value: "
2501 * Map an 8-bit byte into a printable character.
2503 * @param ch either 8-bit or Unicode character from the remote side
2504 * @return character to display on the screen
2506 private int mapCharacter(final int ch
) {
2508 // Unicode character, just return it
2512 CharacterSet charsetGl
= currentState
.g0Charset
;
2513 CharacterSet charsetGr
= currentState
.grCharset
;
2515 if (vt52Mode
== true) {
2516 if (shiftOut
== true) {
2517 // Shifted out character, pull from VT52 graphics
2518 charsetGl
= currentState
.g1Charset
;
2519 charsetGr
= CharacterSet
.US
;
2522 charsetGl
= currentState
.g0Charset
;
2523 charsetGr
= CharacterSet
.US
;
2526 // Pull the character
2527 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2531 if (shiftOut
== true) {
2532 // Shifted out character, pull from G1
2533 charsetGl
= currentState
.g1Charset
;
2534 charsetGr
= currentState
.grCharset
;
2536 // Pull the character
2537 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2541 if (singleshift
== Singleshift
.SS2
) {
2543 singleshift
= Singleshift
.NONE
;
2545 // Shifted out character, pull from G2
2546 charsetGl
= currentState
.g2Charset
;
2547 charsetGr
= currentState
.grCharset
;
2551 if (singleshift
== Singleshift
.SS3
) {
2553 singleshift
= Singleshift
.NONE
;
2555 // Shifted out character, pull from G3
2556 charsetGl
= currentState
.g3Charset
;
2557 charsetGr
= currentState
.grCharset
;
2560 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2561 // Check for locking shift
2563 switch (currentState
.glLockshift
) {
2566 throw new IllegalArgumentException("programming bug");
2569 throw new IllegalArgumentException("programming bug");
2572 throw new IllegalArgumentException("programming bug");
2576 charsetGl
= currentState
.g2Charset
;
2581 charsetGl
= currentState
.g3Charset
;
2586 charsetGl
= currentState
.g0Charset
;
2590 switch (currentState
.grLockshift
) {
2593 throw new IllegalArgumentException("programming bug");
2596 throw new IllegalArgumentException("programming bug");
2600 charsetGr
= currentState
.g1Charset
;
2605 charsetGr
= currentState
.g2Charset
;
2610 charsetGr
= currentState
.g3Charset
;
2615 charsetGr
= CharacterSet
.DEC_SUPPLEMENTAL
;
2622 // Pull the character
2623 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2627 * Scroll the text within a scrolling region up n lines.
2629 * @param regionTop top row of the scrolling region
2630 * @param regionBottom bottom row of the scrolling region
2631 * @param n number of lines to scroll
2633 private void scrollingRegionScrollUp(final int regionTop
,
2634 final int regionBottom
, final int n
) {
2636 if (regionTop
>= regionBottom
) {
2640 // Sanity check: see if there will be any characters left after the
2642 if (regionBottom
+ 1 - regionTop
<= n
) {
2643 // There won't be anything left in the region, so just call
2644 // eraseScreen() and return.
2645 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2649 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2650 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2651 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2653 List
<DisplayLine
> displayMiddle
= display
.subList(regionBottom
+ 1
2654 - remaining
, regionBottom
+ 1);
2655 display
= new ArrayList
<DisplayLine
>(displayTop
);
2656 display
.addAll(displayMiddle
);
2657 for (int i
= 0; i
< n
; i
++) {
2658 DisplayLine line
= new DisplayLine(currentState
.attr
);
2659 line
.setReverseColor(reverseVideo
);
2662 display
.addAll(displayBottom
);
2664 assert (display
.size() == height
);
2668 * Scroll the text within a scrolling region down n lines.
2670 * @param regionTop top row of the scrolling region
2671 * @param regionBottom bottom row of the scrolling region
2672 * @param n number of lines to scroll
2674 private void scrollingRegionScrollDown(final int regionTop
,
2675 final int regionBottom
, final int n
) {
2677 if (regionTop
>= regionBottom
) {
2681 // Sanity check: see if there will be any characters left after the
2683 if (regionBottom
+ 1 - regionTop
<= n
) {
2684 // There won't be anything left in the region, so just call
2685 // eraseScreen() and return.
2686 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2690 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2691 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2692 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2694 List
<DisplayLine
> displayMiddle
= display
.subList(regionTop
,
2695 regionTop
+ remaining
);
2696 display
= new ArrayList
<DisplayLine
>(displayTop
);
2697 for (int i
= 0; i
< n
; i
++) {
2698 DisplayLine line
= new DisplayLine(currentState
.attr
);
2699 line
.setReverseColor(reverseVideo
);
2702 display
.addAll(displayMiddle
);
2703 display
.addAll(displayBottom
);
2705 assert (display
.size() == height
);
2709 * Process a control character.
2711 * @param ch 8-bit character from the remote side
2713 private void handleControlChar(final char ch
) {
2714 assert ((ch
<= 0x1F) || ((ch
>= 0x7F) && (ch
<= 0x9F)));
2725 // Transmit the answerback message.
2736 cursorLeft(1, false);
2741 advanceToNextTabStop();
2767 currentState
.glLockshift
= LockshiftMode
.NONE
;
2773 currentState
.glLockshift
= LockshiftMode
.NONE
;
2798 singleshift
= Singleshift
.SS2
;
2803 singleshift
= Singleshift
.SS3
;
2813 * Advance the cursor to the next tab stop.
2815 private void advanceToNextTabStop() {
2816 if (tabStops
.size() == 0) {
2817 // Go to the rightmost column
2818 cursorRight(rightMargin
- currentState
.cursorX
, false);
2821 for (Integer stop
: tabStops
) {
2822 if (stop
> currentState
.cursorX
) {
2823 cursorRight(stop
- currentState
.cursorX
, false);
2828 * We got here, meaning there isn't a tab stop beyond the current
2829 * cursor position. Place the cursor of the right-most edge of the
2832 cursorRight(rightMargin
- currentState
.cursorX
, false);
2836 * Save a character into the collect buffer.
2838 * @param ch character to save
2840 private void collect(final char ch
) {
2841 collectBuffer
.append(ch
);
2845 * Save a byte into the CSI parameters buffer.
2847 * @param ch byte to save
2849 private void param(final byte ch
) {
2850 if (csiParams
.size() == 0) {
2851 csiParams
.add(Integer
.valueOf(0));
2853 Integer x
= csiParams
.get(csiParams
.size() - 1);
2854 if ((ch
>= '0') && (ch
<= '9')) {
2857 csiParams
.set(csiParams
.size() - 1, x
);
2860 if ((ch
== ';') && (csiParams
.size() < 16)) {
2861 csiParams
.add(Integer
.valueOf(0));
2866 * Get a CSI parameter value, with a default.
2868 * @param position parameter index. 0 is the first parameter.
2869 * @param defaultValue value to use if csiParams[position] doesn't exist
2870 * @return parameter value
2872 private int getCsiParam(final int position
, final int defaultValue
) {
2873 if (csiParams
.size() < position
+ 1) {
2874 return defaultValue
;
2876 return csiParams
.get(position
).intValue();
2880 * Get a CSI parameter value, clamped to within min/max.
2882 * @param position parameter index. 0 is the first parameter.
2883 * @param defaultValue value to use if csiParams[position] doesn't exist
2884 * @param minValue minimum value inclusive
2885 * @param maxValue maximum value inclusive
2886 * @return parameter value
2888 private int getCsiParam(final int position
, final int defaultValue
,
2889 final int minValue
, final int maxValue
) {
2891 assert (minValue
<= maxValue
);
2892 int value
= getCsiParam(position
, defaultValue
);
2893 if (value
< minValue
) {
2896 if (value
> maxValue
) {
2903 * Set or unset a toggle.
2905 * @param value true for set ('h'), false for reset ('l')
2907 private void setToggle(final boolean value
) {
2908 boolean decPrivateModeFlag
= false;
2910 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2911 if (collectBuffer
.charAt(i
) == '?') {
2912 decPrivateModeFlag
= true;
2917 for (Integer i
: csiParams
) {
2922 if (decPrivateModeFlag
== true) {
2924 if (value
== true) {
2925 // Use application arrow keys
2926 arrowKeyMode
= ArrowKeyMode
.VT100
;
2928 // Use ANSI arrow keys
2929 arrowKeyMode
= ArrowKeyMode
.ANSI
;
2934 if (decPrivateModeFlag
== true) {
2935 if (value
== false) {
2939 arrowKeyMode
= ArrowKeyMode
.VT52
;
2942 * From the VT102 docs: "You use ANSI mode to select
2943 * most terminal features; the terminal uses the same
2944 * features when it switches to VT52 mode. You
2945 * cannot, however, change most of these features in
2948 * In other words, do not reset any other attributes
2949 * when switching between VT52 submode and ANSI.
2951 * HOWEVER, the real vt100 does switch the character
2952 * set according to Usenet.
2954 currentState
.g0Charset
= CharacterSet
.US
;
2955 currentState
.g1Charset
= CharacterSet
.DRAWING
;
2958 if ((type
== DeviceType
.VT220
)
2959 || (type
== DeviceType
.XTERM
)) {
2961 // VT52 mode is explicitly 7-bit
2963 singleshift
= Singleshift
.NONE
;
2968 if (value
== true) {
2969 // Turn off keyboard
2978 if (decPrivateModeFlag
== true) {
2980 if (value
== true) {
2987 if ((displayListener
!= null)
2988 && (type
== DeviceType
.XTERM
)
2990 // For xterms, reset to the actual width, not 80
2992 width
= displayListener
.getDisplayWidth();
2993 rightMargin
= width
- 1;
2996 width
= rightMargin
+ 1;
2999 // Entire screen is cleared, and scrolling region is
3001 eraseScreen(0, 0, height
- 1, width
- 1, false);
3002 scrollRegionTop
= 0;
3003 scrollRegionBottom
= height
- 1;
3004 // Also home the cursor
3005 cursorPosition(0, 0);
3009 if (decPrivateModeFlag
== true) {
3011 if (value
== true) {
3020 if (value
== true) {
3028 if (decPrivateModeFlag
== true) {
3030 if (value
== true) {
3032 * Set selects reverse screen, a white screen
3033 * background with black characters.
3035 if (reverseVideo
!= true) {
3037 * If in normal video, switch it back
3039 invertDisplayColors();
3041 reverseVideo
= true;
3044 * Reset selects normal screen, a black screen
3045 * background with white characters.
3047 if (reverseVideo
== true) {
3049 * If in reverse video already, switch it back
3051 invertDisplayColors();
3053 reverseVideo
= false;
3058 if (decPrivateModeFlag
== true) {
3060 if (value
== true) {
3061 // Origin is relative to scroll region cursor.
3062 // Cursor can NEVER leave scrolling region.
3063 currentState
.originMode
= true;
3064 cursorPosition(0, 0);
3066 // Origin is absolute to entire screen. Cursor can
3067 // leave the scrolling region via cup() and hvp().
3068 currentState
.originMode
= false;
3069 cursorPosition(0, 0);
3074 if (decPrivateModeFlag
== true) {
3076 if (value
== true) {
3078 currentState
.lineWrap
= true;
3080 // Turn linewrap off
3081 currentState
.lineWrap
= false;
3086 if (decPrivateModeFlag
== true) {
3088 if (value
== true) {
3089 // Keyboard auto-repeat on
3092 // Keyboard auto-repeat off
3098 if (decPrivateModeFlag
== false) {
3100 if (value
== true) {
3110 if (decPrivateModeFlag
== true) {
3116 if (decPrivateModeFlag
== true) {
3122 if (decPrivateModeFlag
== false) {
3124 if (value
== true) {
3126 * Set causes a received linefeed, form feed, or
3127 * vertical tab to move cursor to first column of
3128 * next line. RETURN transmits both a carriage return
3129 * and linefeed. This selection is also called new
3135 * Reset causes a received linefeed, form feed, or
3136 * vertical tab to move cursor to next line in
3137 * current column. RETURN transmits a carriage
3140 newLineMode
= false;
3146 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3147 if (decPrivateModeFlag
== true) {
3149 if (value
== true) {
3151 cursorVisible
= true;
3154 cursorVisible
= false;
3161 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3162 if (decPrivateModeFlag
== true) {
3164 if (value
== true) {
3165 // Select national mode NRC
3168 // Select multi-national mode
3177 if (type
== DeviceType
.XTERM
) {
3178 if (decPrivateModeFlag
== true) {
3179 if (value
== true) {
3180 // Enable sixel scrolling (default).
3183 // Disable sixel scrolling.
3192 if ((type
== DeviceType
.XTERM
)
3193 && (decPrivateModeFlag
== true)
3195 // Mouse: normal tracking mode
3196 if (value
== true) {
3197 mouseProtocol
= MouseProtocol
.NORMAL
;
3199 mouseProtocol
= MouseProtocol
.OFF
;
3205 if ((type
== DeviceType
.XTERM
)
3206 && (decPrivateModeFlag
== true)
3208 // Mouse: normal tracking mode
3209 if (value
== true) {
3210 mouseProtocol
= MouseProtocol
.BUTTONEVENT
;
3212 mouseProtocol
= MouseProtocol
.OFF
;
3218 if ((type
== DeviceType
.XTERM
)
3219 && (decPrivateModeFlag
== true)
3221 // Mouse: Any-event tracking mode
3222 if (value
== true) {
3223 mouseProtocol
= MouseProtocol
.ANYEVENT
;
3225 mouseProtocol
= MouseProtocol
.OFF
;
3231 if ((type
== DeviceType
.XTERM
)
3232 && (decPrivateModeFlag
== true)
3234 // Mouse: UTF-8 coordinates
3235 if (value
== true) {
3236 mouseEncoding
= MouseEncoding
.UTF8
;
3238 mouseEncoding
= MouseEncoding
.X10
;
3244 if ((type
== DeviceType
.XTERM
)
3245 && (decPrivateModeFlag
== true)
3247 // Mouse: SGR coordinates
3248 if (value
== true) {
3249 mouseEncoding
= MouseEncoding
.SGR
;
3251 mouseEncoding
= MouseEncoding
.X10
;
3257 if (type
== DeviceType
.XTERM
) {
3258 if (decPrivateModeFlag
== true) {
3259 if (value
== true) {
3260 // Use private color registers for each sixel
3261 // graphic (default).
3262 sixelPalette
= null;
3264 // Use shared color registers for each sixel
3266 sixelPalette
= new HashMap
<Integer
, java
.awt
.Color
>();
3280 * DECSC - Save cursor.
3282 private void decsc() {
3283 savedState
.setTo(currentState
);
3287 * DECRC - Restore cursor.
3289 private void decrc() {
3290 currentState
.setTo(savedState
);
3296 private void ind() {
3297 // Move the cursor and scroll if necessary. If at the bottom line
3298 // already, a scroll up is supposed to be performed.
3299 if (currentState
.cursorY
== scrollRegionBottom
) {
3300 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
3302 cursorDown(1, true);
3306 * RI - Reverse index.
3309 // Move the cursor and scroll if necessary. If at the top line
3310 // already, a scroll down is supposed to be performed.
3311 if (currentState
.cursorY
== scrollRegionTop
) {
3312 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
, 1);
3320 private void nel() {
3321 // Move the cursor and scroll if necessary. If at the bottom line
3322 // already, a scroll up is supposed to be performed.
3323 if (currentState
.cursorY
== scrollRegionBottom
) {
3324 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
3326 cursorDown(1, true);
3328 // Reset to the beginning of the next line
3329 currentState
.cursorX
= 0;
3333 * DECKPAM - Keypad application mode.
3335 private void deckpam() {
3336 keypadMode
= KeypadMode
.Application
;
3340 * DECKPNM - Keypad numeric mode.
3342 private void deckpnm() {
3343 keypadMode
= KeypadMode
.Numeric
;
3349 * @param n number of spaces to move
3350 * @param honorScrollRegion if true, then do nothing if the cursor is
3351 * outside the scrolling region
3353 private void cursorUp(final int n
, final boolean honorScrollRegion
) {
3357 * Special case: if a user moves the cursor from the right margin, we
3358 * have to reset the VT100 right margin flag.
3361 wrapLineFlag
= false;
3364 for (int i
= 0; i
< n
; i
++) {
3365 if (honorScrollRegion
== true) {
3366 // Honor the scrolling region
3367 if ((currentState
.cursorY
< scrollRegionTop
)
3368 || (currentState
.cursorY
> scrollRegionBottom
)
3370 // Outside region, do nothing
3373 // Inside region, go up
3374 top
= scrollRegionTop
;
3376 // Non-scrolling case
3380 if (currentState
.cursorY
> top
) {
3381 currentState
.cursorY
--;
3387 * Move down n spaces.
3389 * @param n number of spaces to move
3390 * @param honorScrollRegion if true, then do nothing if the cursor is
3391 * outside the scrolling region
3393 private void cursorDown(final int n
, final boolean honorScrollRegion
) {
3397 * Special case: if a user moves the cursor from the right margin, we
3398 * have to reset the VT100 right margin flag.
3401 wrapLineFlag
= false;
3404 for (int i
= 0; i
< n
; i
++) {
3406 if (honorScrollRegion
== true) {
3407 // Honor the scrolling region
3408 if (currentState
.cursorY
> scrollRegionBottom
) {
3409 // Outside region, do nothing
3412 // Inside region, go down
3413 bottom
= scrollRegionBottom
;
3415 // Non-scrolling case
3416 bottom
= height
- 1;
3419 if (currentState
.cursorY
< bottom
) {
3420 currentState
.cursorY
++;
3426 * Move left n spaces.
3428 * @param n number of spaces to move
3429 * @param honorScrollRegion if true, then do nothing if the cursor is
3430 * outside the scrolling region
3432 private void cursorLeft(final int n
, final boolean honorScrollRegion
) {
3434 * Special case: if a user moves the cursor from the right margin, we
3435 * have to reset the VT100 right margin flag.
3438 wrapLineFlag
= false;
3441 for (int i
= 0; i
< n
; i
++) {
3442 if (honorScrollRegion
== true) {
3443 // Honor the scrolling region
3444 if ((currentState
.cursorY
< scrollRegionTop
)
3445 || (currentState
.cursorY
> scrollRegionBottom
)
3447 // Outside region, do nothing
3452 if (currentState
.cursorX
> 0) {
3453 currentState
.cursorX
--;
3459 * Move right n spaces.
3461 * @param n number of spaces to move
3462 * @param honorScrollRegion if true, then do nothing if the cursor is
3463 * outside the scrolling region
3465 private void cursorRight(final int n
, final boolean honorScrollRegion
) {
3466 int rightMargin
= this.rightMargin
;
3469 * Special case: if a user moves the cursor from the right margin, we
3470 * have to reset the VT100 right margin flag.
3473 wrapLineFlag
= false;
3476 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
3477 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
3480 for (int i
= 0; i
< n
; i
++) {
3481 if (honorScrollRegion
== true) {
3482 // Honor the scrolling region
3483 if ((currentState
.cursorY
< scrollRegionTop
)
3484 || (currentState
.cursorY
> scrollRegionBottom
)
3486 // Outside region, do nothing
3491 if (currentState
.cursorX
< rightMargin
) {
3492 currentState
.cursorX
++;
3498 * Move cursor to (col, row) where (0, 0) is the top-left corner.
3500 * @param row row to move to
3501 * @param col column to move to
3503 private void cursorPosition(int row
, final int col
) {
3504 int rightMargin
= this.rightMargin
;
3509 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
3510 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
3513 // Set column number
3514 currentState
.cursorX
= col
;
3516 // Sanity check, bring column back to margin.
3517 if (currentState
.cursorX
> rightMargin
) {
3518 currentState
.cursorX
= rightMargin
;
3522 if (currentState
.originMode
== true) {
3523 row
+= scrollRegionTop
;
3525 if (currentState
.cursorY
< row
) {
3526 cursorDown(row
- currentState
.cursorY
, false);
3527 } else if (currentState
.cursorY
> row
) {
3528 cursorUp(currentState
.cursorY
- row
, false);
3531 wrapLineFlag
= false;
3535 * HTS - Horizontal tabulation set.
3537 private void hts() {
3538 for (Integer stop
: tabStops
) {
3539 if (stop
== currentState
.cursorX
) {
3540 // Already have a tab stop here
3545 // Append a tab stop to the end of the array and resort them
3546 tabStops
.add(currentState
.cursorX
);
3547 Collections
.sort(tabStops
);
3551 * DECSWL - Single-width line.
3553 private void decswl() {
3554 display
.get(currentState
.cursorY
).setDoubleWidth(false);
3555 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3559 * DECDWL - Double-width line.
3561 private void decdwl() {
3562 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3563 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3567 * DECHDL - Double-height + double-width line.
3569 * @param topHalf if true, this sets the row to be the top half row of a
3572 private void dechdl(final boolean topHalf
) {
3573 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3574 if (topHalf
== true) {
3575 display
.get(currentState
.cursorY
).setDoubleHeight(1);
3577 display
.get(currentState
.cursorY
).setDoubleHeight(2);
3582 * DECALN - Screen alignment display.
3584 private void decaln() {
3585 Cell newCell
= new Cell('E');
3586 for (DisplayLine line
: display
) {
3587 for (int i
= 0; i
< line
.length(); i
++) {
3588 line
.replace(i
, newCell
);
3594 * DECSCL - Compatibility level.
3596 private void decscl() {
3597 int i
= getCsiParam(0, 0);
3598 int j
= getCsiParam(1, 0);
3602 currentState
.g0Charset
= CharacterSet
.US
;
3603 currentState
.g1Charset
= CharacterSet
.DRAWING
;
3605 } else if (i
== 62) {
3607 if ((j
== 0) || (j
== 2)) {
3609 } else if (j
== 1) {
3616 * CUD - Cursor down.
3618 private void cud() {
3619 cursorDown(getCsiParam(0, 1, 1, height
), true);
3623 * CUF - Cursor forward.
3625 private void cuf() {
3626 cursorRight(getCsiParam(0, 1, 1, rightMargin
+ 1), true);
3630 * CUB - Cursor backward.
3632 private void cub() {
3633 cursorLeft(getCsiParam(0, 1, 1, currentState
.cursorX
+ 1), true);
3639 private void cuu() {
3640 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3644 * CUP - Cursor position.
3646 private void cup() {
3647 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3648 getCsiParam(1, 1, 1, rightMargin
+ 1) - 1);
3652 * CNL - Cursor down and to column 1.
3654 private void cnl() {
3655 cursorDown(getCsiParam(0, 1, 1, height
), true);
3657 cursorLeft(currentState
.cursorX
, true);
3661 * CPL - Cursor up and to column 1.
3663 private void cpl() {
3664 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3666 cursorLeft(currentState
.cursorX
, true);
3670 * CHA - Cursor to column # in current row.
3672 private void cha() {
3673 cursorPosition(currentState
.cursorY
,
3674 getCsiParam(0, 1, 1, rightMargin
+ 1) - 1);
3678 * VPA - Cursor to row #, same column.
3680 private void vpa() {
3681 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3682 currentState
.cursorX
);
3686 * ED - Erase in display.
3689 boolean honorProtected
= false;
3690 boolean decPrivateModeFlag
= false;
3692 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3693 if (collectBuffer
.charAt(i
) == '?') {
3694 decPrivateModeFlag
= true;
3699 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3700 && (decPrivateModeFlag
== true)
3702 honorProtected
= true;
3705 int i
= getCsiParam(0, 0);
3708 // Erase from here to end of screen
3709 if (currentState
.cursorY
< height
- 1) {
3710 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1, width
- 1,
3713 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3714 } else if (i
== 1) {
3715 // Erase from beginning of screen to here
3716 eraseScreen(0, 0, currentState
.cursorY
- 1, width
- 1,
3718 eraseLine(0, currentState
.cursorX
, honorProtected
);
3719 } else if (i
== 2) {
3720 // Erase entire screen
3721 eraseScreen(0, 0, height
- 1, width
- 1, honorProtected
);
3726 * EL - Erase in line.
3729 boolean honorProtected
= false;
3730 boolean decPrivateModeFlag
= false;
3732 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3733 if (collectBuffer
.charAt(i
) == '?') {
3734 decPrivateModeFlag
= true;
3739 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3740 && (decPrivateModeFlag
== true)
3742 honorProtected
= true;
3745 int i
= getCsiParam(0, 0);
3748 // Erase from here to end of line
3749 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3750 } else if (i
== 1) {
3751 // Erase from beginning of line to here
3752 eraseLine(0, currentState
.cursorX
, honorProtected
);
3753 } else if (i
== 2) {
3754 // Erase entire line
3755 eraseLine(0, width
- 1, honorProtected
);
3760 * ECH - Erase # of characters in current row.
3762 private void ech() {
3763 int i
= getCsiParam(0, 1, 1, width
);
3765 // Erase from here to i characters
3766 eraseLine(currentState
.cursorX
, currentState
.cursorX
+ i
- 1, false);
3773 int i
= getCsiParam(0, 1);
3775 if ((currentState
.cursorY
>= scrollRegionTop
)
3776 && (currentState
.cursorY
<= scrollRegionBottom
)
3779 // I can get the same effect with a scroll-down
3780 scrollingRegionScrollDown(currentState
.cursorY
,
3781 scrollRegionBottom
, i
);
3786 * DCH - Delete char.
3788 private void dch() {
3789 int n
= getCsiParam(0, 1);
3790 DisplayLine line
= display
.get(currentState
.cursorY
);
3791 Cell blank
= new Cell();
3792 for (int i
= 0; i
< n
; i
++) {
3793 line
.delete(currentState
.cursorX
, blank
);
3798 * ICH - Insert blank char at cursor.
3800 private void ich() {
3801 int n
= getCsiParam(0, 1);
3802 DisplayLine line
= display
.get(currentState
.cursorY
);
3803 Cell blank
= new Cell();
3804 for (int i
= 0; i
< n
; i
++) {
3805 line
.insert(currentState
.cursorX
, blank
);
3813 int i
= getCsiParam(0, 1);
3815 if ((currentState
.cursorY
>= scrollRegionTop
)
3816 && (currentState
.cursorY
<= scrollRegionBottom
)) {
3818 // I can get the same effect with a scroll-down
3819 scrollingRegionScrollUp(currentState
.cursorY
,
3820 scrollRegionBottom
, i
);
3825 * HVP - Horizontal and vertical position.
3827 private void hvp() {
3832 * REP - Repeat character.
3834 private void rep() {
3835 int n
= getCsiParam(0, 1);
3836 for (int i
= 0; i
< n
; i
++) {
3837 printCharacter(repCh
);
3845 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
,
3846 getCsiParam(0, 1, 1, height
));
3853 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
,
3854 getCsiParam(0, 1, 1, height
));
3858 * CBT - Go back X tab stops.
3860 private void cbt() {
3861 int tabsToMove
= getCsiParam(0, 1);
3864 for (int i
= 0; i
< tabsToMove
; i
++) {
3865 int j
= currentState
.cursorX
;
3866 for (tabI
= 0; tabI
< tabStops
.size(); tabI
++) {
3867 if (tabStops
.get(tabI
) >= currentState
.cursorX
) {
3875 j
= tabStops
.get(tabI
);
3877 cursorPosition(currentState
.cursorY
, j
);
3882 * CHT - Advance X tab stops.
3884 private void cht() {
3885 int n
= getCsiParam(0, 1);
3886 for (int i
= 0; i
< n
; i
++) {
3887 advanceToNextTabStop();
3892 * SGR - Select graphics rendition.
3894 private void sgr() {
3896 if (csiParams
.size() == 0) {
3897 currentState
.attr
.reset();
3901 int sgrColorMode
= -1;
3902 boolean idx88Color
= false;
3903 boolean rgbColor
= false;
3907 for (Integer i
: csiParams
) {
3909 if ((sgrColorMode
== 38) || (sgrColorMode
== 48)) {
3911 assert (type
== DeviceType
.XTERM
);
3915 * Indexed color mode, we now have the index number.
3917 if (sgrColorMode
== 38) {
3918 currentState
.attr
.setForeColorRGB(get88Color(i
));
3920 assert (sgrColorMode
== 48);
3921 currentState
.attr
.setBackColorRGB(get88Color(i
));
3930 * RGB color mode, we are collecting tokens.
3934 } else if (rgbGreen
== -1) {
3935 rgbGreen
= i
& 0xFF;
3937 int rgb
= rgbRed
<< 16;
3938 rgb
|= rgbGreen
<< 8;
3941 // System.err.printf("RGB: %08x\n", rgb);
3943 if (sgrColorMode
== 38) {
3944 currentState
.attr
.setForeColorRGB(rgb
);
3946 assert (sgrColorMode
== 48);
3947 currentState
.attr
.setBackColorRGB(rgb
);
3968 * Indexed color mode.
3975 * This is neither indexed nor RGB color. Bail out.
3980 } // if ((sgrColorMode == 38) || (sgrColorMode == 48))
3986 currentState
.attr
.reset();
3991 currentState
.attr
.setBold(true);
3996 currentState
.attr
.setUnderline(true);
4001 currentState
.attr
.setBlink(true);
4006 currentState
.attr
.setReverse(true);
4013 if (type
== DeviceType
.XTERM
) {
4023 // Set black foreground
4024 currentState
.attr
.setForeColorRGB(get88Color(8));
4027 // Set red foreground
4028 currentState
.attr
.setForeColorRGB(get88Color(9));
4031 // Set green foreground
4032 currentState
.attr
.setForeColorRGB(get88Color(10));
4035 // Set yellow foreground
4036 currentState
.attr
.setForeColorRGB(get88Color(11));
4039 // Set blue foreground
4040 currentState
.attr
.setForeColorRGB(get88Color(12));
4043 // Set magenta foreground
4044 currentState
.attr
.setForeColorRGB(get88Color(13));
4047 // Set cyan foreground
4048 currentState
.attr
.setForeColorRGB(get88Color(14));
4051 // Set white foreground
4052 currentState
.attr
.setForeColorRGB(get88Color(15));
4056 // Set black background
4057 currentState
.attr
.setBackColorRGB(get88Color(8));
4060 // Set red background
4061 currentState
.attr
.setBackColorRGB(get88Color(9));
4064 // Set green background
4065 currentState
.attr
.setBackColorRGB(get88Color(10));
4068 // Set yellow background
4069 currentState
.attr
.setBackColorRGB(get88Color(11));
4072 // Set blue background
4073 currentState
.attr
.setBackColorRGB(get88Color(12));
4076 // Set magenta background
4077 currentState
.attr
.setBackColorRGB(get88Color(13));
4080 // Set cyan background
4081 currentState
.attr
.setBackColorRGB(get88Color(14));
4084 // Set white background
4085 currentState
.attr
.setBackColorRGB(get88Color(15));
4093 if ((type
== DeviceType
.VT220
)
4094 || (type
== DeviceType
.XTERM
)) {
4100 currentState
.attr
.setBold(false);
4105 currentState
.attr
.setUnderline(false);
4110 currentState
.attr
.setBlink(false);
4115 currentState
.attr
.setReverse(false);
4123 // A true VT100/102/220 does not support color, however everyone
4124 // is used to their terminal emulator supporting color so we will
4125 // unconditionally support color for all DeviceType's.
4130 // Set black foreground
4131 currentState
.attr
.setForeColor(Color
.BLACK
);
4132 currentState
.attr
.setForeColorRGB(-1);
4135 // Set red foreground
4136 currentState
.attr
.setForeColor(Color
.RED
);
4137 currentState
.attr
.setForeColorRGB(-1);
4140 // Set green foreground
4141 currentState
.attr
.setForeColor(Color
.GREEN
);
4142 currentState
.attr
.setForeColorRGB(-1);
4145 // Set yellow foreground
4146 currentState
.attr
.setForeColor(Color
.YELLOW
);
4147 currentState
.attr
.setForeColorRGB(-1);
4150 // Set blue foreground
4151 currentState
.attr
.setForeColor(Color
.BLUE
);
4152 currentState
.attr
.setForeColorRGB(-1);
4155 // Set magenta foreground
4156 currentState
.attr
.setForeColor(Color
.MAGENTA
);
4157 currentState
.attr
.setForeColorRGB(-1);
4160 // Set cyan foreground
4161 currentState
.attr
.setForeColor(Color
.CYAN
);
4162 currentState
.attr
.setForeColorRGB(-1);
4165 // Set white foreground
4166 currentState
.attr
.setForeColor(Color
.WHITE
);
4167 currentState
.attr
.setForeColorRGB(-1);
4170 if (type
== DeviceType
.XTERM
) {
4172 * Xterm supports T.416 / ISO-8613-3 codes to select
4173 * either an indexed color or an RGB value. (It also
4174 * permits these ISO-8613-3 SGR sequences to be separated
4175 * by colons rather than semicolons.)
4177 * We will support only the following:
4179 * 1. Indexed color mode (88- or 256-color modes).
4183 * These cover most of the use cases in the real world.
4185 * HOWEVER, note that this is an awful broken "standard",
4186 * with no way to do it "right". See
4187 * http://invisible-island.net/ncurses/ncurses.faq.html#xterm_16MegaColors
4188 * for a detailed discussion of the current state of RGB
4189 * in various terminals, the point of which is that none
4190 * of them really do the same thing despite all appearing
4194 * https://bugs.kde.org/show_bug.cgi?id=107487#c3 .
4195 * where it is assumed that supporting just the "indexed
4196 * mode" of these sequences (which could align easily
4197 * with existing SGR colors) is assumed to mean full
4198 * support of 24-bit RGB. So it is all or nothing.
4200 * Finally, these sequences break the assumptions of
4201 * standard ECMA-48 style parsers as pointed out at
4202 * https://bugs.kde.org/show_bug.cgi?id=107487#c11 .
4203 * Therefore in order to keep a clean display, we cannot
4204 * parse anything else in this sequence.
4209 // Underscore on, default foreground color
4210 currentState
.attr
.setUnderline(true);
4211 currentState
.attr
.setForeColor(Color
.WHITE
);
4215 // Underscore off, default foreground color
4216 currentState
.attr
.setUnderline(false);
4217 currentState
.attr
.setForeColor(Color
.WHITE
);
4218 currentState
.attr
.setForeColorRGB(-1);
4221 // Set black background
4222 currentState
.attr
.setBackColor(Color
.BLACK
);
4223 currentState
.attr
.setBackColorRGB(-1);
4226 // Set red background
4227 currentState
.attr
.setBackColor(Color
.RED
);
4228 currentState
.attr
.setBackColorRGB(-1);
4231 // Set green background
4232 currentState
.attr
.setBackColor(Color
.GREEN
);
4233 currentState
.attr
.setBackColorRGB(-1);
4236 // Set yellow background
4237 currentState
.attr
.setBackColor(Color
.YELLOW
);
4238 currentState
.attr
.setBackColorRGB(-1);
4241 // Set blue background
4242 currentState
.attr
.setBackColor(Color
.BLUE
);
4243 currentState
.attr
.setBackColorRGB(-1);
4246 // Set magenta background
4247 currentState
.attr
.setBackColor(Color
.MAGENTA
);
4248 currentState
.attr
.setBackColorRGB(-1);
4251 // Set cyan background
4252 currentState
.attr
.setBackColor(Color
.CYAN
);
4253 currentState
.attr
.setBackColorRGB(-1);
4256 // Set white background
4257 currentState
.attr
.setBackColor(Color
.WHITE
);
4258 currentState
.attr
.setBackColorRGB(-1);
4261 if (type
== DeviceType
.XTERM
) {
4263 * Xterm supports T.416 / ISO-8613-3 codes to select
4264 * either an indexed color or an RGB value. (It also
4265 * permits these ISO-8613-3 SGR sequences to be separated
4266 * by colons rather than semicolons.)
4268 * We will support only the following:
4270 * 1. Indexed color mode (88- or 256-color modes).
4274 * These cover most of the use cases in the real world.
4276 * HOWEVER, note that this is an awful broken "standard",
4277 * with no way to do it "right". See
4278 * http://invisible-island.net/ncurses/ncurses.faq.html#xterm_16MegaColors
4279 * for a detailed discussion of the current state of RGB
4280 * in various terminals, the point of which is that none
4281 * of them really do the same thing despite all appearing
4285 * https://bugs.kde.org/show_bug.cgi?id=107487#c3 .
4286 * where it is assumed that supporting just the "indexed
4287 * mode" of these sequences (which could align easily
4288 * with existing SGR colors) is assumed to mean full
4289 * support of 24-bit RGB. So it is all or nothing.
4291 * Finally, these sequences break the assumptions of
4292 * standard ECMA-48 style parsers as pointed out at
4293 * https://bugs.kde.org/show_bug.cgi?id=107487#c11 .
4294 * Therefore in order to keep a clean display, we cannot
4295 * parse anything else in this sequence.
4302 // Default background
4303 currentState
.attr
.setBackColor(Color
.BLACK
);
4304 currentState
.attr
.setBackColorRGB(-1);
4314 * DA - Device attributes.
4317 int extendedFlag
= 0;
4319 if (collectBuffer
.length() > 0) {
4320 String args
= collectBuffer
.substring(1);
4321 if (collectBuffer
.charAt(0) == '>') {
4323 if (collectBuffer
.length() >= 2) {
4324 i
= Integer
.parseInt(args
);
4326 } else if (collectBuffer
.charAt(0) == '=') {
4328 if (collectBuffer
.length() >= 2) {
4329 i
= Integer
.parseInt(args
);
4332 // Unknown code, bail out
4337 if ((i
!= 0) && (i
!= 1)) {
4341 if ((extendedFlag
== 0) && (i
== 0)) {
4342 // Send string directly to remote side
4343 writeRemote(deviceTypeResponse());
4347 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
4349 if ((extendedFlag
== 1) && (i
== 0)) {
4351 * Request "What type of terminal are you, what is your
4352 * firmware version, and what hardware options do you have
4355 * Respond: "I am a VT220 (identification code of 1), my
4356 * firmware version is _____ (Pv), and I have _____ Po
4357 * options installed."
4363 if (s8c1t
== true) {
4364 writeRemote("\u009b>1;10;0c");
4366 writeRemote("\033[>1;10;0c");
4372 if ((extendedFlag
== 2) && (i
== 0)) {
4375 * Request "What is your unit ID?"
4377 * Respond: "I was manufactured at site 00 and have a unique ID
4381 writeRemote("\033P!|00010203\033\\");
4386 * DECSTBM - Set top and bottom margins.
4388 private void decstbm() {
4389 boolean decPrivateModeFlag
= false;
4391 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4392 if (collectBuffer
.charAt(i
) == '?') {
4393 decPrivateModeFlag
= true;
4397 if (decPrivateModeFlag
) {
4398 // This could be restore DEC private mode values.
4402 int top
= getCsiParam(0, 1, 1, height
) - 1;
4403 int bottom
= getCsiParam(1, height
, 1, height
) - 1;
4404 if (bottom
> height
- 1) {
4405 bottom
= height
- 1;
4411 scrollRegionTop
= top
;
4412 scrollRegionBottom
= bottom
;
4415 cursorPosition(0, 0);
4420 * DECREQTPARM - Request terminal parameters.
4422 private void decreqtparm() {
4423 int i
= getCsiParam(0, 0);
4425 if ((i
!= 0) && (i
!= 1)) {
4432 * Request terminal parameters.
4436 * Parity NONE, 8 bits, xmitspeed 38400, recvspeed 38400.
4437 * (CLoCk MULtiplier = 1, STP option flags = 0)
4441 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4444 str
= String
.format("\u009b%d;1;1;128;128;1;0x", i
+ 2);
4446 str
= String
.format("\033[%d;1;1;128;128;1;0x", i
+ 2);
4452 * DECSCA - Select Character Attributes.
4454 private void decsca() {
4455 int i
= getCsiParam(0, 0);
4457 if ((i
== 0) || (i
== 2)) {
4459 currentState
.attr
.setProtect(false);
4463 currentState
.attr
.setProtect(true);
4468 * DECSTR - Soft Terminal Reset.
4470 private void decstr() {
4471 // Do exactly like RIS - Reset to initial state
4473 // Do I clear screen too? I think so...
4474 eraseScreen(0, 0, height
- 1, width
- 1, false);
4475 cursorPosition(0, 0);
4479 * DSR - Device status report.
4481 private void dsr() {
4482 boolean decPrivateModeFlag
= false;
4483 int row
= currentState
.cursorY
;
4485 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4486 if (collectBuffer
.charAt(i
) == '?') {
4487 decPrivateModeFlag
= true;
4492 int i
= getCsiParam(0, 0);
4497 // Request status report. Respond with "OK, no malfunction."
4499 // Send string directly to remote side
4500 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4503 writeRemote("\u009b0n");
4505 writeRemote("\033[0n");
4510 // Request cursor position. Respond with current position.
4511 if (currentState
.originMode
== true) {
4512 row
-= scrollRegionTop
;
4515 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4518 str
= String
.format("\u009b%d;%dR", row
+ 1,
4519 currentState
.cursorX
+ 1);
4521 str
= String
.format("\033[%d;%dR", row
+ 1,
4522 currentState
.cursorX
+ 1);
4525 // Send string directly to remote side
4530 if (decPrivateModeFlag
== true) {
4532 // Request printer status report. Respond with "Printer not
4535 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4536 && (s8c1t
== true)) {
4537 writeRemote("\u009b?13n");
4539 writeRemote("\033[?13n");
4545 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4546 && (decPrivateModeFlag
== true)
4549 // Request user-defined keys are locked or unlocked. Respond
4550 // with "User-defined keys are locked."
4552 if (s8c1t
== true) {
4553 writeRemote("\u009b?21n");
4555 writeRemote("\033[?21n");
4561 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4562 && (decPrivateModeFlag
== true)
4565 // Request keyboard language. Respond with "Keyboard
4566 // language is North American."
4568 if (s8c1t
== true) {
4569 writeRemote("\u009b?27;1n");
4571 writeRemote("\033[?27;1n");
4578 // Some other option, ignore
4584 * TBC - Tabulation clear.
4586 private void tbc() {
4587 int i
= getCsiParam(0, 0);
4589 List
<Integer
> newStops
= new ArrayList
<Integer
>();
4590 for (Integer stop
: tabStops
) {
4591 if (stop
== currentState
.cursorX
) {
4596 tabStops
= newStops
;
4604 * Erase the characters in the current line from the start column to the
4605 * end column, inclusive.
4607 * @param start starting column to erase (between 0 and width - 1)
4608 * @param end ending column to erase (between 0 and width - 1)
4609 * @param honorProtected if true, do not erase characters with the
4610 * protected attribute set
4612 private void eraseLine(int start
, int end
, final boolean honorProtected
) {
4617 if (end
> width
- 1) {
4624 for (int i
= start
; i
<= end
; i
++) {
4625 DisplayLine line
= display
.get(currentState
.cursorY
);
4626 if ((!honorProtected
)
4627 || ((honorProtected
) && (!line
.charAt(i
).isProtect()))) {
4634 * From the VT102 manual:
4636 * Erasing a character also erases any character
4637 * attribute of the character.
4643 * Erase with the current color a.k.a. back-color erase
4646 line
.setChar(i
, ' ');
4647 line
.setAttr(i
, currentState
.attr
);
4655 * Erase a rectangular section of the screen, inclusive. end column,
4658 * @param startRow starting row to erase (between 0 and height - 1)
4659 * @param startCol starting column to erase (between 0 and width - 1)
4660 * @param endRow ending row to erase (between 0 and height - 1)
4661 * @param endCol ending column to erase (between 0 and width - 1)
4662 * @param honorProtected if true, do not erase characters with the
4663 * protected attribute set
4665 private void eraseScreen(final int startRow
, final int startCol
,
4666 final int endRow
, final int endCol
, final boolean honorProtected
) {
4674 || (endRow
< startRow
)
4675 || (endCol
< startCol
)
4680 oldCursorY
= currentState
.cursorY
;
4681 for (int i
= startRow
; i
<= endRow
; i
++) {
4682 currentState
.cursorY
= i
;
4683 eraseLine(startCol
, endCol
, honorProtected
);
4685 // Erase display clears the double attributes
4686 display
.get(i
).setDoubleWidth(false);
4687 display
.get(i
).setDoubleHeight(0);
4689 currentState
.cursorY
= oldCursorY
;
4693 * VT220 printer functions. All of these are parsed, but won't do
4696 private void printerFunctions() {
4697 boolean decPrivateModeFlag
= false;
4698 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4699 if (collectBuffer
.charAt(i
) == '?') {
4700 decPrivateModeFlag
= true;
4705 int i
= getCsiParam(0, 0);
4710 if (decPrivateModeFlag
== false) {
4716 if (decPrivateModeFlag
== true) {
4717 // Print cursor line
4722 if (decPrivateModeFlag
== true) {
4723 // Auto print mode OFF
4725 // Printer controller OFF
4727 // Characters re-appear on the screen
4728 printerControllerMode
= false;
4733 if (decPrivateModeFlag
== true) {
4737 // Printer controller
4739 // Characters get sucked into oblivion
4740 printerControllerMode
= true;
4751 * Handle the SCAN_OSC_STRING state. Handle this in VT100 because lots
4752 * of remote systems will send an XTerm title sequence even if TERM isn't
4755 * @param xtermChar the character received from the remote side
4757 private void oscPut(final char xtermChar
) {
4758 // System.err.println("oscPut: " + xtermChar);
4761 collectBuffer
.append(xtermChar
);
4764 if ((xtermChar
== 0x07)
4765 || (collectBuffer
.toString().endsWith("\033\\"))
4768 if (xtermChar
== 0x07) {
4769 args
= collectBuffer
.substring(0, collectBuffer
.length() - 1);
4771 args
= collectBuffer
.substring(0, collectBuffer
.length() - 2);
4774 String
[] p
= args
.split(";");
4776 if ((p
[0].equals("0")) || (p
[0].equals("2"))) {
4783 if (p
[0].equals("4")) {
4784 for (int i
= 1; i
+ 1 < p
.length
; i
+= 2) {
4785 // Set a color index value
4787 set88Color(Integer
.parseInt(p
[i
]), p
[i
+ 1]);
4788 } catch (NumberFormatException e
) {
4794 if (p
[0].equals("10")) {
4795 if (p
[1].equals("?")) {
4796 // Respond with foreground color.
4797 java
.awt
.Color color
= jexer
.backend
.SwingTerminal
.attrToForegroundColor(currentState
.attr
);
4799 writeRemote(String
.format(
4800 "\033]10;rgb:%04x/%04x/%04x\033\\",
4801 color
.getRed() << 8,
4802 color
.getGreen() << 8,
4803 color
.getBlue() << 8));
4807 if (p
[0].equals("11")) {
4808 if (p
[1].equals("?")) {
4809 // Respond with background color.
4810 java
.awt
.Color color
= jexer
.backend
.SwingTerminal
.attrToBackgroundColor(currentState
.attr
);
4812 writeRemote(String
.format(
4813 "\033]11;rgb:%04x/%04x/%04x\033\\",
4814 color
.getRed() << 8,
4815 color
.getGreen() << 8,
4816 color
.getBlue() << 8));
4820 if (p
[0].equals("444")) {
4821 if (p
[1].equals("0") && (p
.length
== 6)) {
4822 // Jexer image - RGB
4823 parseJexerImageRGB(p
[2], p
[3], p
[4], p
[5]);
4824 } else if (p
[1].equals("1") && (p
.length
== 4)) {
4825 // Jexer image - PNG
4826 parseJexerImageFile(1, p
[2], p
[3]);
4827 } else if (p
[1].equals("2") && (p
.length
== 4)) {
4828 // Jexer image - JPG
4829 parseJexerImageFile(2, p
[2], p
[3]);
4834 // Go to SCAN_GROUND state
4841 * Handle the SCAN_SOSPMAPC_STRING state. This is currently only used by
4842 * Jexer ECMA48Terminal to talk to ECMA48.
4844 * @param pmChar the character received from the remote side
4846 private void pmPut(final char pmChar
) {
4847 // System.err.println("pmPut: " + pmChar);
4850 collectBuffer
.append(pmChar
);
4853 if (collectBuffer
.toString().endsWith("\033\\")) {
4855 arg
= collectBuffer
.substring(0, collectBuffer
.length() - 2);
4857 // System.err.println("arg: '" + arg + "'");
4859 if (arg
.equals("hideMousePointer")) {
4860 hideMousePointer
= true;
4862 if (arg
.equals("showMousePointer")) {
4863 hideMousePointer
= false;
4866 // Go to SCAN_GROUND state
4873 * Perform xterm window operations.
4875 private void xtermWindowOps() {
4876 boolean xtermPrivateModeFlag
= false;
4878 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4879 if (collectBuffer
.charAt(i
) == '?') {
4880 xtermPrivateModeFlag
= true;
4885 int i
= getCsiParam(0, 0);
4887 if (!xtermPrivateModeFlag
) {
4890 // Report xterm text area size in pixels as CSI 4 ; height ;
4892 writeRemote(String
.format("\033[4;%d;%dt", textHeight
* height
,
4893 textWidth
* width
));
4896 // Report character size in pixels as CSI 6 ; height ; width
4898 writeRemote(String
.format("\033[6;%d;%dt", textHeight
,
4902 // Report the text are size in characters as CSI 8 ; height ;
4904 writeRemote(String
.format("\033[8;%d;%dt", height
, width
));
4913 * Respond to xterm sixel query.
4915 private void xtermSixelQuery() {
4916 int item
= getCsiParam(0, 0);
4917 int action
= getCsiParam(1, 0);
4918 int value
= getCsiParam(2, 0);
4923 // Report number of color registers.
4924 writeRemote(String
.format("\033[?%d;%d;%dS", item
, 0, 1024));
4931 // We will not support this option.
4932 writeRemote(String
.format("\033[?%d;%dS", item
, action
));
4936 * Run this input character through the ECMA48 state machine.
4938 * @param ch character from the remote side
4940 private void consume(final int ch
) {
4943 // System.err.printf("%c STATE = %s\n", ch, scanState);
4945 // Special "anywhere" states
4947 // 18, 1A --> execute, then switch to SCAN_GROUND
4948 if ((ch
== 0x18) || (ch
== 0x1A)) {
4949 // CAN and SUB abort escape sequences
4954 // 80-8F, 91-97, 99, 9A, 9C --> execute, then switch to SCAN_GROUND
4958 if ((type
== DeviceType
.XTERM
)
4959 && ((scanState
== ScanState
.OSC_STRING
)
4960 || (scanState
== ScanState
.DCS_SIXEL
)
4961 || (scanState
== ScanState
.SOSPMAPC_STRING
))
4963 // Xterm can pass ESCAPE to its OSC sequence.
4964 // Xterm can pass ESCAPE to its DCS sequence.
4965 // Jexer can pass ESCAPE to its PM sequence.
4966 } else if ((scanState
!= ScanState
.DCS_ENTRY
)
4967 && (scanState
!= ScanState
.DCS_INTERMEDIATE
)
4968 && (scanState
!= ScanState
.DCS_IGNORE
)
4969 && (scanState
!= ScanState
.DCS_PARAM
)
4970 && (scanState
!= ScanState
.DCS_PASSTHROUGH
)
4972 scanState
= ScanState
.ESCAPE
;
4977 // 0x9B == CSI 8-bit sequence
4979 scanState
= ScanState
.CSI_ENTRY
;
4983 // 0x9D goes to ScanState.OSC_STRING
4985 scanState
= ScanState
.OSC_STRING
;
4989 // 0x90 goes to DCS_ENTRY
4991 scanState
= ScanState
.DCS_ENTRY
;
4995 // 0x98, 0x9E, and 0x9F go to SOSPMAPC_STRING
4996 if ((ch
== 0x98) || (ch
== 0x9E) || (ch
== 0x9F)) {
4997 scanState
= ScanState
.SOSPMAPC_STRING
;
5001 // 0x7F (DEL) is always discarded
5006 switch (scanState
) {
5009 // 00-17, 19, 1C-1F --> execute
5010 // 80-8F, 91-9A, 9C --> execute
5011 if ((ch
<= 0x1F) || ((ch
>= 0x80) && (ch
<= 0x9F))) {
5012 handleControlChar((char) ch
);
5016 if (((ch
>= 0x20) && (ch
<= 0x7F))
5020 // VT220 printer --> trash bin
5021 if (((type
== DeviceType
.VT220
)
5022 || (type
== DeviceType
.XTERM
))
5023 && (printerControllerMode
== true)
5028 // Hang onto this character
5029 repCh
= mapCharacter(ch
);
5031 // Print this character
5032 printCharacter(repCh
);
5037 // 00-17, 19, 1C-1F --> execute
5039 handleControlChar((char) ch
);
5043 // 20-2F --> collect, then switch to ESCAPE_INTERMEDIATE
5044 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5046 scanState
= ScanState
.ESCAPE_INTERMEDIATE
;
5050 // 30-4F, 51-57, 59, 5A, 5C, 60-7E --> dispatch, then switch to GROUND
5051 if ((ch
>= 0x30) && (ch
<= 0x4F)) {
5062 // DECSC - Save cursor
5063 // Note this code overlaps both ANSI and VT52 mode
5068 // DECRC - Restore cursor
5069 // Note this code overlaps both ANSI and VT52 mode
5078 if (vt52Mode
== true) {
5079 // DECANM - Enter ANSI mode
5081 arrowKeyMode
= ArrowKeyMode
.VT100
;
5084 * From the VT102 docs: "You use ANSI mode to select
5085 * most terminal features; the terminal uses the same
5086 * features when it switches to VT52 mode. You
5087 * cannot, however, change most of these features in
5090 * In other words, do not reset any other attributes
5091 * when switching between VT52 submode and ANSI.
5095 currentState
.g0Charset
= CharacterSet
.US
;
5096 currentState
.g1Charset
= CharacterSet
.DRAWING
;
5098 singleshift
= Singleshift
.NONE
;
5099 currentState
.glLockshift
= LockshiftMode
.NONE
;
5100 currentState
.grLockshift
= LockshiftMode
.NONE
;
5104 // DECKPAM - Keypad application mode
5105 // Note this code overlaps both ANSI and VT52 mode
5109 // DECKPNM - Keypad numeric mode
5110 // Note this code overlaps both ANSI and VT52 mode
5117 if (vt52Mode
== true) {
5118 // Cursor up, and stop at the top without scrolling
5123 if (vt52Mode
== true) {
5124 // Cursor down, and stop at the bottom without scrolling
5125 cursorDown(1, false);
5129 if (vt52Mode
== true) {
5130 // Cursor right, and stop at the right without scrolling
5131 cursorRight(1, false);
5135 if (vt52Mode
== true) {
5136 // Cursor left, and stop at the left without scrolling
5137 cursorLeft(1, false);
5144 if (vt52Mode
== true) {
5152 if (vt52Mode
== true) {
5153 // G0 --> Special graphics
5154 currentState
.g0Charset
= CharacterSet
.VT52_GRAPHICS
;
5158 if (vt52Mode
== true) {
5160 currentState
.g0Charset
= CharacterSet
.US
;
5164 if (vt52Mode
== true) {
5166 cursorPosition(0, 0);
5168 // HTS - Horizontal tabulation set
5173 if (vt52Mode
== true) {
5174 // Reverse line feed. Same as RI.
5179 if (vt52Mode
== true) {
5180 // Erase to end of screen
5181 eraseLine(currentState
.cursorX
, width
- 1, false);
5182 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1,
5187 if (vt52Mode
== true) {
5188 // Erase to end of line
5189 eraseLine(currentState
.cursorX
, width
- 1, false);
5195 if (vt52Mode
== true) {
5198 // RI - Reverse index
5203 if (vt52Mode
== false) {
5205 singleshift
= Singleshift
.SS2
;
5209 if (vt52Mode
== false) {
5211 singleshift
= Singleshift
.SS3
;
5218 if ((ch
>= 0x51) && (ch
<= 0x57)) {
5234 if (vt52Mode
== true) {
5235 scanState
= ScanState
.VT52_DIRECT_CURSOR_ADDRESS
;
5243 if (vt52Mode
== true) {
5245 // Send string directly to remote side
5246 writeRemote("\033/Z");
5249 // Send string directly to remote side
5250 writeRemote(deviceTypeResponse());
5261 // VT52 cannot get to any of these other states
5262 if (vt52Mode
== true) {
5267 if ((ch
>= 0x60) && (ch
<= 0x7E)) {
5274 // RIS - Reset to initial state
5276 // Do I clear screen too? I think so...
5277 eraseScreen(0, 0, height
- 1, width
- 1, false);
5278 cursorPosition(0, 0);
5292 if ((type
== DeviceType
.VT220
)
5293 || (type
== DeviceType
.XTERM
)) {
5295 // VT220 lockshift G2 into GL
5296 currentState
.glLockshift
= LockshiftMode
.G2_GL
;
5301 if ((type
== DeviceType
.VT220
)
5302 || (type
== DeviceType
.XTERM
)) {
5304 // VT220 lockshift G3 into GL
5305 currentState
.glLockshift
= LockshiftMode
.G3_GL
;
5323 if ((type
== DeviceType
.VT220
)
5324 || (type
== DeviceType
.XTERM
)) {
5326 // VT220 lockshift G3 into GR
5327 currentState
.grLockshift
= LockshiftMode
.G3_GR
;
5332 if ((type
== DeviceType
.VT220
)
5333 || (type
== DeviceType
.XTERM
)) {
5335 // VT220 lockshift G2 into GR
5336 currentState
.grLockshift
= LockshiftMode
.G2_GR
;
5342 if ((type
== DeviceType
.VT220
)
5343 || (type
== DeviceType
.XTERM
)) {
5345 // VT220 lockshift G1 into GR
5346 currentState
.grLockshift
= LockshiftMode
.G1_GR
;
5356 // 0x5B goes to CSI_ENTRY
5358 scanState
= ScanState
.CSI_ENTRY
;
5361 // 0x5D goes to OSC_STRING
5363 scanState
= ScanState
.OSC_STRING
;
5366 // 0x50 goes to DCS_ENTRY
5368 scanState
= ScanState
.DCS_ENTRY
;
5371 // 0x58, 0x5E, and 0x5F go to SOSPMAPC_STRING
5372 if ((ch
== 0x58) || (ch
== 0x5E) || (ch
== 0x5F)) {
5373 scanState
= ScanState
.SOSPMAPC_STRING
;
5378 case ESCAPE_INTERMEDIATE
:
5379 // 00-17, 19, 1C-1F --> execute
5381 handleControlChar((char) ch
);
5384 // 20-2F --> collect
5385 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5389 // 30-7E --> dispatch, then switch to GROUND
5390 if ((ch
>= 0x30) && (ch
<= 0x7E)) {
5393 if ((collectBuffer
.length() == 1)
5394 && (collectBuffer
.charAt(0) == '(')) {
5395 // G0 --> Special graphics
5396 currentState
.g0Charset
= CharacterSet
.DRAWING
;
5398 if ((collectBuffer
.length() == 1)
5399 && (collectBuffer
.charAt(0) == ')')) {
5400 // G1 --> Special graphics
5401 currentState
.g1Charset
= CharacterSet
.DRAWING
;
5403 if ((type
== DeviceType
.VT220
)
5404 || (type
== DeviceType
.XTERM
)) {
5406 if ((collectBuffer
.length() == 1)
5407 && (collectBuffer
.charAt(0) == '*')) {
5408 // G2 --> Special graphics
5409 currentState
.g2Charset
= CharacterSet
.DRAWING
;
5411 if ((collectBuffer
.length() == 1)
5412 && (collectBuffer
.charAt(0) == '+')) {
5413 // G3 --> Special graphics
5414 currentState
.g3Charset
= CharacterSet
.DRAWING
;
5419 if ((collectBuffer
.length() == 1)
5420 && (collectBuffer
.charAt(0) == '(')) {
5421 // G0 --> Alternate character ROM standard character set
5422 currentState
.g0Charset
= CharacterSet
.ROM
;
5424 if ((collectBuffer
.length() == 1)
5425 && (collectBuffer
.charAt(0) == ')')) {
5426 // G1 --> Alternate character ROM standard character set
5427 currentState
.g1Charset
= CharacterSet
.ROM
;
5431 if ((collectBuffer
.length() == 1)
5432 && (collectBuffer
.charAt(0) == '(')) {
5433 // G0 --> Alternate character ROM special graphics
5434 currentState
.g0Charset
= CharacterSet
.ROM_SPECIAL
;
5436 if ((collectBuffer
.length() == 1)
5437 && (collectBuffer
.charAt(0) == ')')) {
5438 // G1 --> Alternate character ROM special graphics
5439 currentState
.g1Charset
= CharacterSet
.ROM_SPECIAL
;
5443 if ((collectBuffer
.length() == 1)
5444 && (collectBuffer
.charAt(0) == '#')) {
5445 // DECDHL - Double-height line (top half)
5450 if ((collectBuffer
.length() == 1)
5451 && (collectBuffer
.charAt(0) == '#')) {
5452 // DECDHL - Double-height line (bottom half)
5455 if ((type
== DeviceType
.VT220
)
5456 || (type
== DeviceType
.XTERM
)) {
5458 if ((collectBuffer
.length() == 1)
5459 && (collectBuffer
.charAt(0) == '(')) {
5461 currentState
.g0Charset
= CharacterSet
.NRC_DUTCH
;
5463 if ((collectBuffer
.length() == 1)
5464 && (collectBuffer
.charAt(0) == ')')) {
5466 currentState
.g1Charset
= CharacterSet
.NRC_DUTCH
;
5468 if ((collectBuffer
.length() == 1)
5469 && (collectBuffer
.charAt(0) == '*')) {
5471 currentState
.g2Charset
= CharacterSet
.NRC_DUTCH
;
5473 if ((collectBuffer
.length() == 1)
5474 && (collectBuffer
.charAt(0) == '+')) {
5476 currentState
.g3Charset
= CharacterSet
.NRC_DUTCH
;
5481 if ((collectBuffer
.length() == 1)
5482 && (collectBuffer
.charAt(0) == '#')) {
5483 // DECSWL - Single-width line
5486 if ((type
== DeviceType
.VT220
)
5487 || (type
== DeviceType
.XTERM
)) {
5489 if ((collectBuffer
.length() == 1)
5490 && (collectBuffer
.charAt(0) == '(')) {
5492 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
5494 if ((collectBuffer
.length() == 1)
5495 && (collectBuffer
.charAt(0) == ')')) {
5497 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
5499 if ((collectBuffer
.length() == 1)
5500 && (collectBuffer
.charAt(0) == '*')) {
5502 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
5504 if ((collectBuffer
.length() == 1)
5505 && (collectBuffer
.charAt(0) == '+')) {
5507 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
5512 if ((collectBuffer
.length() == 1)
5513 && (collectBuffer
.charAt(0) == '#')) {
5514 // DECDWL - Double-width line
5517 if ((type
== DeviceType
.VT220
)
5518 || (type
== DeviceType
.XTERM
)) {
5520 if ((collectBuffer
.length() == 1)
5521 && (collectBuffer
.charAt(0) == '(')) {
5523 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
5525 if ((collectBuffer
.length() == 1)
5526 && (collectBuffer
.charAt(0) == ')')) {
5528 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
5530 if ((collectBuffer
.length() == 1)
5531 && (collectBuffer
.charAt(0) == '*')) {
5533 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
5535 if ((collectBuffer
.length() == 1)
5536 && (collectBuffer
.charAt(0) == '+')) {
5538 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
5543 if ((type
== DeviceType
.VT220
)
5544 || (type
== DeviceType
.XTERM
)) {
5546 if ((collectBuffer
.length() == 1)
5547 && (collectBuffer
.charAt(0) == '(')) {
5549 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
5551 if ((collectBuffer
.length() == 1)
5552 && (collectBuffer
.charAt(0) == ')')) {
5554 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
5556 if ((collectBuffer
.length() == 1)
5557 && (collectBuffer
.charAt(0) == '*')) {
5559 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
5561 if ((collectBuffer
.length() == 1)
5562 && (collectBuffer
.charAt(0) == '+')) {
5564 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
5569 if ((collectBuffer
.length() == 1)
5570 && (collectBuffer
.charAt(0) == '#')) {
5571 // DECALN - Screen alignment display
5580 if ((type
== DeviceType
.VT220
)
5581 || (type
== DeviceType
.XTERM
)) {
5583 if ((collectBuffer
.length() == 1)
5584 && (collectBuffer
.charAt(0) == '(')) {
5585 // G0 --> DEC_SUPPLEMENTAL
5586 currentState
.g0Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5588 if ((collectBuffer
.length() == 1)
5589 && (collectBuffer
.charAt(0) == ')')) {
5590 // G1 --> DEC_SUPPLEMENTAL
5591 currentState
.g1Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5593 if ((collectBuffer
.length() == 1)
5594 && (collectBuffer
.charAt(0) == '*')) {
5595 // G2 --> DEC_SUPPLEMENTAL
5596 currentState
.g2Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5598 if ((collectBuffer
.length() == 1)
5599 && (collectBuffer
.charAt(0) == '+')) {
5600 // G3 --> DEC_SUPPLEMENTAL
5601 currentState
.g3Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5606 if ((type
== DeviceType
.VT220
)
5607 || (type
== DeviceType
.XTERM
)) {
5609 if ((collectBuffer
.length() == 1)
5610 && (collectBuffer
.charAt(0) == '(')) {
5612 currentState
.g0Charset
= CharacterSet
.NRC_SWISS
;
5614 if ((collectBuffer
.length() == 1)
5615 && (collectBuffer
.charAt(0) == ')')) {
5617 currentState
.g1Charset
= CharacterSet
.NRC_SWISS
;
5619 if ((collectBuffer
.length() == 1)
5620 && (collectBuffer
.charAt(0) == '*')) {
5622 currentState
.g2Charset
= CharacterSet
.NRC_SWISS
;
5624 if ((collectBuffer
.length() == 1)
5625 && (collectBuffer
.charAt(0) == '+')) {
5627 currentState
.g3Charset
= CharacterSet
.NRC_SWISS
;
5636 if ((collectBuffer
.length() == 1)
5637 && (collectBuffer
.charAt(0) == '(')) {
5638 // G0 --> United Kingdom set
5639 currentState
.g0Charset
= CharacterSet
.UK
;
5641 if ((collectBuffer
.length() == 1)
5642 && (collectBuffer
.charAt(0) == ')')) {
5643 // G1 --> United Kingdom set
5644 currentState
.g1Charset
= CharacterSet
.UK
;
5646 if ((type
== DeviceType
.VT220
)
5647 || (type
== DeviceType
.XTERM
)) {
5649 if ((collectBuffer
.length() == 1)
5650 && (collectBuffer
.charAt(0) == '*')) {
5651 // G2 --> United Kingdom set
5652 currentState
.g2Charset
= CharacterSet
.UK
;
5654 if ((collectBuffer
.length() == 1)
5655 && (collectBuffer
.charAt(0) == '+')) {
5656 // G3 --> United Kingdom set
5657 currentState
.g3Charset
= CharacterSet
.UK
;
5662 if ((collectBuffer
.length() == 1)
5663 && (collectBuffer
.charAt(0) == '(')) {
5665 currentState
.g0Charset
= CharacterSet
.US
;
5667 if ((collectBuffer
.length() == 1)
5668 && (collectBuffer
.charAt(0) == ')')) {
5670 currentState
.g1Charset
= CharacterSet
.US
;
5672 if ((type
== DeviceType
.VT220
)
5673 || (type
== DeviceType
.XTERM
)) {
5675 if ((collectBuffer
.length() == 1)
5676 && (collectBuffer
.charAt(0) == '*')) {
5678 currentState
.g2Charset
= CharacterSet
.US
;
5680 if ((collectBuffer
.length() == 1)
5681 && (collectBuffer
.charAt(0) == '+')) {
5683 currentState
.g3Charset
= CharacterSet
.US
;
5688 if ((type
== DeviceType
.VT220
)
5689 || (type
== DeviceType
.XTERM
)) {
5691 if ((collectBuffer
.length() == 1)
5692 && (collectBuffer
.charAt(0) == '(')) {
5694 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
5696 if ((collectBuffer
.length() == 1)
5697 && (collectBuffer
.charAt(0) == ')')) {
5699 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
5701 if ((collectBuffer
.length() == 1)
5702 && (collectBuffer
.charAt(0) == '*')) {
5704 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
5706 if ((collectBuffer
.length() == 1)
5707 && (collectBuffer
.charAt(0) == '+')) {
5709 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
5716 if ((type
== DeviceType
.VT220
)
5717 || (type
== DeviceType
.XTERM
)) {
5719 if ((collectBuffer
.length() == 1)
5720 && (collectBuffer
.charAt(0) == '(')) {
5722 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
5724 if ((collectBuffer
.length() == 1)
5725 && (collectBuffer
.charAt(0) == ')')) {
5727 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
5729 if ((collectBuffer
.length() == 1)
5730 && (collectBuffer
.charAt(0) == '*')) {
5732 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
5734 if ((collectBuffer
.length() == 1)
5735 && (collectBuffer
.charAt(0) == '+')) {
5737 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
5742 if ((type
== DeviceType
.VT220
)
5743 || (type
== DeviceType
.XTERM
)) {
5745 if ((collectBuffer
.length() == 1)
5746 && (collectBuffer
.charAt(0) == ' ')) {
5753 if ((type
== DeviceType
.VT220
)
5754 || (type
== DeviceType
.XTERM
)) {
5756 if ((collectBuffer
.length() == 1)
5757 && (collectBuffer
.charAt(0) == ' ')) {
5764 if ((type
== DeviceType
.VT220
)
5765 || (type
== DeviceType
.XTERM
)) {
5767 if ((collectBuffer
.length() == 1)
5768 && (collectBuffer
.charAt(0) == '(')) {
5770 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
5772 if ((collectBuffer
.length() == 1)
5773 && (collectBuffer
.charAt(0) == ')')) {
5775 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
5777 if ((collectBuffer
.length() == 1)
5778 && (collectBuffer
.charAt(0) == '*')) {
5780 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
5782 if ((collectBuffer
.length() == 1)
5783 && (collectBuffer
.charAt(0) == '+')) {
5785 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
5793 if ((type
== DeviceType
.VT220
)
5794 || (type
== DeviceType
.XTERM
)) {
5796 if ((collectBuffer
.length() == 1)
5797 && (collectBuffer
.charAt(0) == '(')) {
5799 currentState
.g0Charset
= CharacterSet
.NRC_GERMAN
;
5801 if ((collectBuffer
.length() == 1)
5802 && (collectBuffer
.charAt(0) == ')')) {
5804 currentState
.g1Charset
= CharacterSet
.NRC_GERMAN
;
5806 if ((collectBuffer
.length() == 1)
5807 && (collectBuffer
.charAt(0) == '*')) {
5809 currentState
.g2Charset
= CharacterSet
.NRC_GERMAN
;
5811 if ((collectBuffer
.length() == 1)
5812 && (collectBuffer
.charAt(0) == '+')) {
5814 currentState
.g3Charset
= CharacterSet
.NRC_GERMAN
;
5825 if ((type
== DeviceType
.VT220
)
5826 || (type
== DeviceType
.XTERM
)) {
5828 if ((collectBuffer
.length() == 1)
5829 && (collectBuffer
.charAt(0) == '(')) {
5831 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH_CA
;
5833 if ((collectBuffer
.length() == 1)
5834 && (collectBuffer
.charAt(0) == ')')) {
5836 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH_CA
;
5838 if ((collectBuffer
.length() == 1)
5839 && (collectBuffer
.charAt(0) == '*')) {
5841 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH_CA
;
5843 if ((collectBuffer
.length() == 1)
5844 && (collectBuffer
.charAt(0) == '+')) {
5846 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH_CA
;
5851 if ((type
== DeviceType
.VT220
)
5852 || (type
== DeviceType
.XTERM
)) {
5854 if ((collectBuffer
.length() == 1)
5855 && (collectBuffer
.charAt(0) == '(')) {
5857 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH
;
5859 if ((collectBuffer
.length() == 1)
5860 && (collectBuffer
.charAt(0) == ')')) {
5862 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH
;
5864 if ((collectBuffer
.length() == 1)
5865 && (collectBuffer
.charAt(0) == '*')) {
5867 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH
;
5869 if ((collectBuffer
.length() == 1)
5870 && (collectBuffer
.charAt(0) == '+')) {
5872 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH
;
5884 if ((type
== DeviceType
.VT220
)
5885 || (type
== DeviceType
.XTERM
)) {
5887 if ((collectBuffer
.length() == 1)
5888 && (collectBuffer
.charAt(0) == '(')) {
5890 currentState
.g0Charset
= CharacterSet
.NRC_ITALIAN
;
5892 if ((collectBuffer
.length() == 1)
5893 && (collectBuffer
.charAt(0) == ')')) {
5895 currentState
.g1Charset
= CharacterSet
.NRC_ITALIAN
;
5897 if ((collectBuffer
.length() == 1)
5898 && (collectBuffer
.charAt(0) == '*')) {
5900 currentState
.g2Charset
= CharacterSet
.NRC_ITALIAN
;
5902 if ((collectBuffer
.length() == 1)
5903 && (collectBuffer
.charAt(0) == '+')) {
5905 currentState
.g3Charset
= CharacterSet
.NRC_ITALIAN
;
5910 if ((type
== DeviceType
.VT220
)
5911 || (type
== DeviceType
.XTERM
)) {
5913 if ((collectBuffer
.length() == 1)
5914 && (collectBuffer
.charAt(0) == '(')) {
5916 currentState
.g0Charset
= CharacterSet
.NRC_SPANISH
;
5918 if ((collectBuffer
.length() == 1)
5919 && (collectBuffer
.charAt(0) == ')')) {
5921 currentState
.g1Charset
= CharacterSet
.NRC_SPANISH
;
5923 if ((collectBuffer
.length() == 1)
5924 && (collectBuffer
.charAt(0) == '*')) {
5926 currentState
.g2Charset
= CharacterSet
.NRC_SPANISH
;
5928 if ((collectBuffer
.length() == 1)
5929 && (collectBuffer
.charAt(0) == '+')) {
5931 currentState
.g3Charset
= CharacterSet
.NRC_SPANISH
;
5978 // 0x9C goes to GROUND
5986 // 00-17, 19, 1C-1F --> execute
5988 handleControlChar((char) ch
);
5991 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
5992 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5994 scanState
= ScanState
.CSI_INTERMEDIATE
;
5997 // 30-39, 3B --> param, then switch to CSI_PARAM
5998 if ((ch
>= '0') && (ch
<= '9')) {
6000 scanState
= ScanState
.CSI_PARAM
;
6004 scanState
= ScanState
.CSI_PARAM
;
6007 // 3C-3F --> collect, then switch to CSI_PARAM
6008 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6010 scanState
= ScanState
.CSI_PARAM
;
6013 // 40-7E --> dispatch, then switch to GROUND
6014 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6017 // ICH - Insert character
6025 // CUD - Cursor down
6029 // CUF - Cursor forward
6033 // CUB - Cursor backward
6037 // CNL - Cursor down and to column 1
6038 if (type
== DeviceType
.XTERM
) {
6043 // CPL - Cursor up and to column 1
6044 if (type
== DeviceType
.XTERM
) {
6049 // CHA - Cursor to column # in current row
6050 if (type
== DeviceType
.XTERM
) {
6055 // CUP - Cursor position
6059 // CHT - Cursor forward X tab stops (default 1)
6060 if (type
== DeviceType
.XTERM
) {
6065 // ED - Erase in display
6069 // EL - Erase in line
6084 // DCH - Delete character
6091 // Scroll up X lines (default 1)
6092 if (type
== DeviceType
.XTERM
) {
6093 boolean xtermPrivateModeFlag
= false;
6094 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
6095 if (collectBuffer
.charAt(i
) == '?') {
6096 xtermPrivateModeFlag
= true;
6100 if (xtermPrivateModeFlag
) {
6108 // Scroll down X lines (default 1)
6109 if (type
== DeviceType
.XTERM
) {
6118 if ((type
== DeviceType
.VT220
)
6119 || (type
== DeviceType
.XTERM
)) {
6121 // ECH - Erase character
6128 // CBT - Cursor backward X tab stops (default 1)
6129 if (type
== DeviceType
.XTERM
) {
6140 // HPA - Cursor to column # in current row. Same as CHA
6141 if (type
== DeviceType
.XTERM
) {
6146 // HPR - Cursor right. Same as CUF
6147 if (type
== DeviceType
.XTERM
) {
6152 // REP - Repeat last char X times
6153 if (type
== DeviceType
.XTERM
) {
6158 // DA - Device attributes
6162 // VPA - Cursor to row, current column.
6163 if (type
== DeviceType
.XTERM
) {
6168 // VPR - Cursor down. Same as CUD
6169 if (type
== DeviceType
.XTERM
) {
6174 // HVP - Horizontal and vertical position
6178 // TBC - Tabulation clear
6182 // Sets an ANSI or DEC private toggle
6186 if ((type
== DeviceType
.VT220
)
6187 || (type
== DeviceType
.XTERM
)) {
6189 // Printer functions
6197 // Sets an ANSI or DEC private toggle
6201 // SGR - Select graphics rendition
6205 // DSR - Device status report
6212 // DECLL - Load leds
6216 // DECSTBM - Set top and bottom margins
6220 // Save cursor (ANSI.SYS)
6221 if (type
== DeviceType
.XTERM
) {
6222 savedState
.cursorX
= currentState
.cursorX
;
6223 savedState
.cursorY
= currentState
.cursorY
;
6227 if (type
== DeviceType
.XTERM
) {
6228 // Window operations
6233 // Restore cursor (ANSI.SYS)
6234 if (type
== DeviceType
.XTERM
) {
6235 cursorPosition(savedState
.cursorY
, savedState
.cursorX
);
6242 // DECREQTPARM - Request terminal parameters
6258 // 0x9C goes to GROUND
6263 // 0x3A goes to CSI_IGNORE
6265 scanState
= ScanState
.CSI_IGNORE
;
6270 // 00-17, 19, 1C-1F --> execute
6272 handleControlChar((char) ch
);
6275 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
6276 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6278 scanState
= ScanState
.CSI_INTERMEDIATE
;
6281 // 30-39, 3B --> param
6282 if ((ch
>= '0') && (ch
<= '9')) {
6289 // 0x3A goes to CSI_IGNORE
6291 scanState
= ScanState
.CSI_IGNORE
;
6293 // 0x3C-3F goes to CSI_IGNORE
6294 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6295 scanState
= ScanState
.CSI_IGNORE
;
6298 // 40-7E --> dispatch, then switch to GROUND
6299 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6302 // ICH - Insert character
6310 // CUD - Cursor down
6314 // CUF - Cursor forward
6318 // CUB - Cursor backward
6322 // CNL - Cursor down and to column 1
6323 if (type
== DeviceType
.XTERM
) {
6328 // CPL - Cursor up and to column 1
6329 if (type
== DeviceType
.XTERM
) {
6334 // CHA - Cursor to column # in current row
6335 if (type
== DeviceType
.XTERM
) {
6340 // CUP - Cursor position
6344 // CHT - Cursor forward X tab stops (default 1)
6345 if (type
== DeviceType
.XTERM
) {
6350 // ED - Erase in display
6354 // EL - Erase in line
6369 // DCH - Delete character
6376 // Scroll up X lines (default 1)
6377 if (type
== DeviceType
.XTERM
) {
6378 boolean xtermPrivateModeFlag
= false;
6379 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
6380 if (collectBuffer
.charAt(i
) == '?') {
6381 xtermPrivateModeFlag
= true;
6385 if (xtermPrivateModeFlag
) {
6393 // Scroll down X lines (default 1)
6394 if (type
== DeviceType
.XTERM
) {
6403 if ((type
== DeviceType
.VT220
)
6404 || (type
== DeviceType
.XTERM
)) {
6406 // ECH - Erase character
6413 // CBT - Cursor backward X tab stops (default 1)
6414 if (type
== DeviceType
.XTERM
) {
6425 // HPA - Cursor to column # in current row. Same as CHA
6426 if (type
== DeviceType
.XTERM
) {
6431 // HPR - Cursor right. Same as CUF
6432 if (type
== DeviceType
.XTERM
) {
6437 // REP - Repeat last char X times
6438 if (type
== DeviceType
.XTERM
) {
6443 // DA - Device attributes
6447 // VPA - Cursor to row, current column.
6448 if (type
== DeviceType
.XTERM
) {
6453 // VPR - Cursor down. Same as CUD
6454 if (type
== DeviceType
.XTERM
) {
6459 // HVP - Horizontal and vertical position
6463 // TBC - Tabulation clear
6467 // Sets an ANSI or DEC private toggle
6471 if ((type
== DeviceType
.VT220
)
6472 || (type
== DeviceType
.XTERM
)) {
6474 // Printer functions
6482 // Sets an ANSI or DEC private toggle
6486 // SGR - Select graphics rendition
6490 // DSR - Device status report
6497 // DECLL - Load leds
6501 // DECSTBM - Set top and bottom margins
6507 if (type
== DeviceType
.XTERM
) {
6508 // Window operations
6517 // DECREQTPARM - Request terminal parameters
6534 case CSI_INTERMEDIATE
:
6535 // 00-17, 19, 1C-1F --> execute
6537 handleControlChar((char) ch
);
6540 // 20-2F --> collect
6541 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6545 // 0x30-3F goes to CSI_IGNORE
6546 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
6547 scanState
= ScanState
.CSI_IGNORE
;
6550 // 40-7E --> dispatch, then switch to GROUND
6551 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6603 if (((type
== DeviceType
.VT220
)
6604 || (type
== DeviceType
.XTERM
))
6605 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
6607 // DECSCL - compatibility level
6610 if ((type
== DeviceType
.XTERM
)
6611 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '!')
6613 // DECSTR - Soft terminal reset
6618 if (((type
== DeviceType
.VT220
)
6619 || (type
== DeviceType
.XTERM
))
6620 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
6648 // 00-17, 19, 1C-1F --> execute
6650 handleControlChar((char) ch
);
6653 // 20-2F --> collect
6654 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6658 // 40-7E --> ignore, then switch to GROUND
6659 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6663 // 20-3F, 7F --> ignore
6669 // 0x9C goes to GROUND
6674 // 0x1B 0x5C goes to GROUND
6679 if ((collectBuffer
.length() > 0)
6680 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6686 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
6687 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6689 scanState
= ScanState
.DCS_INTERMEDIATE
;
6692 // 30-39, 3B --> param, then switch to DCS_PARAM
6693 if ((ch
>= '0') && (ch
<= '9')) {
6695 scanState
= ScanState
.DCS_PARAM
;
6699 scanState
= ScanState
.DCS_PARAM
;
6702 // 3C-3F --> collect, then switch to DCS_PARAM
6703 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6705 scanState
= ScanState
.DCS_PARAM
;
6708 // 00-17, 19, 1C-1F, 7F --> ignore
6710 // 0x3A goes to DCS_IGNORE
6712 scanState
= ScanState
.DCS_IGNORE
;
6715 // 0x71 goes to DCS_SIXEL
6717 sixelParseBuffer
.setLength(0);
6718 scanState
= ScanState
.DCS_SIXEL
;
6719 } else if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6720 // 0x40-7E goes to DCS_PASSTHROUGH
6721 scanState
= ScanState
.DCS_PASSTHROUGH
;
6725 case DCS_INTERMEDIATE
:
6727 // 0x9C goes to GROUND
6732 // 0x1B 0x5C goes to GROUND
6737 if ((collectBuffer
.length() > 0)
6738 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6744 // 0x30-3F goes to DCS_IGNORE
6745 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
6746 scanState
= ScanState
.DCS_IGNORE
;
6749 // 0x40-7E goes to DCS_PASSTHROUGH
6750 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6751 scanState
= ScanState
.DCS_PASSTHROUGH
;
6754 // 00-17, 19, 1C-1F, 7F --> ignore
6759 // 0x9C goes to GROUND
6764 // 0x1B 0x5C goes to GROUND
6769 if ((collectBuffer
.length() > 0)
6770 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6776 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
6777 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6779 scanState
= ScanState
.DCS_INTERMEDIATE
;
6782 // 30-39, 3B --> param
6783 if ((ch
>= '0') && (ch
<= '9')) {
6790 // 00-17, 19, 1C-1F, 7F --> ignore
6792 // 0x3A, 3C-3F goes to DCS_IGNORE
6794 scanState
= ScanState
.DCS_IGNORE
;
6796 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6797 scanState
= ScanState
.DCS_IGNORE
;
6800 // 0x71 goes to DCS_SIXEL
6802 sixelParseBuffer
.setLength(0);
6803 scanState
= ScanState
.DCS_SIXEL
;
6804 } else if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6805 // 0x40-7E goes to DCS_PASSTHROUGH
6806 scanState
= ScanState
.DCS_PASSTHROUGH
;
6810 case DCS_PASSTHROUGH
:
6811 // 0x9C goes to GROUND
6816 // 0x1B 0x5C goes to GROUND
6821 if ((collectBuffer
.length() > 0)
6822 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6828 // 00-17, 19, 1C-1F, 20-7E --> put
6830 // We ignore all DCS except sixel.
6834 // We ignore all DCS except sixel.
6837 if ((ch
>= 0x1C) && (ch
<= 0x1F)) {
6838 // We ignore all DCS except sixel.
6841 if ((ch
>= 0x20) && (ch
<= 0x7E)) {
6842 // We ignore all DCS except sixel.
6851 // 00-17, 19, 1C-1F, 20-7F --> ignore
6853 // 0x9C goes to GROUND
6861 // 0x9C goes to GROUND
6868 // 0x1B 0x5C goes to GROUND
6874 if ((collectBuffer
.length() > 0)
6875 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6883 // 00-17, 19, 1C-1F, 20-7E --> put
6886 || ((ch
>= 0x1C) && (ch
<= 0x1F))
6887 || ((ch
>= 0x20) && (ch
<= 0x7E))
6889 sixelParseBuffer
.append((char) ch
);
6895 case SOSPMAPC_STRING
:
6896 // 00-17, 19, 1C-1F, 20-7F --> ignore
6898 // Special case for Jexer: PM can pass one control character
6903 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
6907 // 0x9C goes to GROUND
6915 // Special case for Xterm: OSC can pass control characters
6916 if ((ch
== 0x9C) || (ch
== 0x07) || (ch
== 0x1B)) {
6920 // 00-17, 19, 1C-1F --> ignore
6922 // 20-7F --> osc_put
6923 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
6927 // 0x9C goes to GROUND
6934 case VT52_DIRECT_CURSOR_ADDRESS
:
6935 // This is a special case for the VT52 sequence "ESC Y l c"
6936 if (collectBuffer
.length() == 0) {
6938 } else if (collectBuffer
.length() == 1) {
6939 // We've got the two characters, one in the buffer and the
6941 cursorPosition(collectBuffer
.charAt(0) - '\040', ch
- '\040');
6950 * Expose current cursor X to outside world.
6952 * @return current cursor X
6954 public final int getCursorX() {
6955 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
6956 return currentState
.cursorX
* 2;
6958 return currentState
.cursorX
;
6962 * Expose current cursor Y to outside world.
6964 * @return current cursor Y
6966 public final int getCursorY() {
6967 return currentState
.cursorY
;
6971 * Returns true if this terminal has requested the mouse pointer be
6974 * @return true if this terminal has requested the mouse pointer be
6977 public final boolean hasHiddenMousePointer() {
6978 return hideMousePointer
;
6982 * Get the mouse protocol.
6984 * @return MouseProtocol.OFF, MouseProtocol.X10, etc.
6986 public MouseProtocol
getMouseProtocol() {
6987 return mouseProtocol
;
6991 * Draw the left and right cells of a two-cell-wide (full-width) glyph.
6993 * @param leftX the x position to draw the left half to
6994 * @param leftY the y position to draw the left half to
6995 * @param rightX the x position to draw the right half to
6996 * @param rightY the y position to draw the right half to
6997 * @param ch the character to draw
6999 private void drawHalves(final int leftX
, final int leftY
,
7000 final int rightX
, final int rightY
, final int ch
) {
7002 // System.err.println("drawHalves(): " + Integer.toHexString(ch));
7004 if (lastTextHeight
!= textHeight
) {
7005 glyphMaker
= GlyphMaker
.getInstance(textHeight
);
7006 lastTextHeight
= textHeight
;
7009 Cell cell
= new Cell(ch
, currentState
.attr
);
7010 BufferedImage image
= glyphMaker
.getImage(cell
, textWidth
* 2,
7012 BufferedImage leftImage
= image
.getSubimage(0, 0, textWidth
,
7014 BufferedImage rightImage
= image
.getSubimage(textWidth
, 0, textWidth
,
7017 Cell left
= new Cell(cell
);
7018 left
.setImage(leftImage
);
7019 left
.setWidth(Cell
.Width
.LEFT
);
7020 display
.get(leftY
).replace(leftX
, left
);
7022 Cell right
= new Cell(cell
);
7023 right
.setImage(rightImage
);
7024 right
.setWidth(Cell
.Width
.RIGHT
);
7025 display
.get(rightY
).replace(rightX
, right
);
7029 * Set the width of a character cell in pixels.
7031 * @param textWidth the width in pixels of a character cell
7033 public void setTextWidth(final int textWidth
) {
7034 this.textWidth
= textWidth
;
7038 * Set the height of a character cell in pixels.
7040 * @param textHeight the height in pixels of a character cell
7042 public void setTextHeight(final int textHeight
) {
7043 this.textHeight
= textHeight
;
7047 * Parse a sixel string into a bitmap image, and overlay that image onto
7050 private void parseSixel() {
7053 System.err.println("parseSixel(): '" + sixelParseBuffer.toString()
7057 Sixel sixel
= new Sixel(sixelParseBuffer
.toString(), sixelPalette
);
7058 BufferedImage image
= sixel
.getImage();
7060 // System.err.println("parseSixel(): image " + image);
7062 if (image
== null) {
7063 // Sixel data was malformed in some way, bail out.
7066 if ((image
.getWidth() < 1)
7067 || (image
.getWidth() > 10000)
7068 || (image
.getHeight() < 1)
7069 || (image
.getHeight() > 10000)
7074 imageToCells(image
, true);
7078 * Parse a "Jexer" RGB image string into a bitmap image, and overlay that
7079 * image onto the text cells.
7081 * @param pw width token
7082 * @param ph height token
7083 * @param ps scroll token
7084 * @param data pixel data
7086 private void parseJexerImageRGB(final String pw
, final String ph
,
7087 final String ps
, final String data
) {
7090 int imageHeight
= 0;
7091 boolean scroll
= false;
7093 imageWidth
= Integer
.parseInt(pw
);
7094 imageHeight
= Integer
.parseInt(ph
);
7095 } catch (NumberFormatException e
) {
7099 if ((imageWidth
< 1)
7100 || (imageWidth
> 10000)
7101 || (imageHeight
< 1)
7102 || (imageHeight
> 10000)
7106 if (ps
.equals("1")) {
7108 } else if (ps
.equals("0")) {
7114 byte [] bytes
= StringUtils
.fromBase64(data
.getBytes());
7115 if (bytes
.length
!= (imageWidth
* imageHeight
* 3)) {
7119 BufferedImage image
= new BufferedImage(imageWidth
, imageHeight
,
7120 BufferedImage
.TYPE_INT_ARGB
);
7122 for (int x
= 0; x
< imageWidth
; x
++) {
7123 for (int y
= 0; y
< imageHeight
; y
++) {
7124 int red
= bytes
[(y
* imageWidth
* 3) + (x
* 3) ];
7128 int green
= bytes
[(y
* imageWidth
* 3) + (x
* 3) + 1];
7132 int blue
= bytes
[(y
* imageWidth
* 3) + (x
* 3) + 2];
7136 int rgb
= 0xFF000000 | (red
<< 16) | (green
<< 8) | blue
;
7137 image
.setRGB(x
, y
, rgb
);
7141 imageToCells(image
, scroll
);
7145 * Parse a "Jexer" PNG or JPG image string into a bitmap image, and
7146 * overlay that image onto the text cells.
7148 * @param type 1 for PNG, 2 for JPG
7149 * @param ps scroll token
7150 * @param data pixel data
7152 private void parseJexerImageFile(final int type
, final String ps
,
7153 final String data
) {
7156 int imageHeight
= 0;
7157 boolean scroll
= false;
7158 BufferedImage image
= null;
7160 byte [] bytes
= StringUtils
.fromBase64(data
.getBytes());
7164 if ((bytes
[0] != (byte) 0x89)
7165 || (bytes
[1] != 'P')
7166 || (bytes
[2] != 'N')
7167 || (bytes
[3] != 'G')
7168 || (bytes
[4] != (byte) 0x0D)
7169 || (bytes
[5] != (byte) 0x0A)
7170 || (bytes
[6] != (byte) 0x1A)
7171 || (bytes
[7] != (byte) 0x0A)
7173 // File does not have PNG header, bail out.
7179 if ((bytes
[0] != (byte) 0XFF)
7180 || (bytes
[1] != (byte) 0xD8)
7181 || (bytes
[2] != (byte) 0xFF)
7183 // File does not have JPG header, bail out.
7189 // Unsupported type, bail out.
7193 image
= ImageIO
.read(new ByteArrayInputStream(bytes
));
7194 } catch (IOException e
) {
7198 assert (image
!= null);
7199 imageWidth
= image
.getWidth();
7200 imageHeight
= image
.getHeight();
7201 if ((imageWidth
< 1)
7202 || (imageWidth
> 10000)
7203 || (imageHeight
< 1)
7204 || (imageHeight
> 10000)
7208 if (ps
.equals("1")) {
7210 } else if (ps
.equals("0")) {
7216 imageToCells(image
, scroll
);
7220 * Break up an image into the cells at the current cursor.
7222 * @param image the image to display
7223 * @param scroll if true, scroll the image and move the cursor
7225 private void imageToCells(final BufferedImage image
, final boolean scroll
) {
7226 assert (image
!= null);
7231 * Break up the image into text cell sized pieces as a new array of
7234 * Note original column position x0.
7238 * 1. Advance (printCharacter(' ')) for horizontal increment, or
7239 * index (linefeed() + cursorPosition(y, x0)) for vertical
7242 * 2. Set (x, y) cell image data.
7244 * 3. For the right and bottom edges:
7246 * a. Render the text to pixels using Terminus font.
7248 * b. Blit the image on top of the text, using alpha channel.
7250 int cellColumns
= image
.getWidth() / textWidth
;
7251 if (cellColumns
* textWidth
< image
.getWidth()) {
7254 int cellRows
= image
.getHeight() / textHeight
;
7255 if (cellRows
* textHeight
< image
.getHeight()) {
7259 // Break the image up into an array of cells.
7260 Cell
[][] cells
= new Cell
[cellColumns
][cellRows
];
7262 for (int x
= 0; x
< cellColumns
; x
++) {
7263 for (int y
= 0; y
< cellRows
; y
++) {
7265 int width
= textWidth
;
7266 if ((x
+ 1) * textWidth
> image
.getWidth()) {
7267 width
= image
.getWidth() - (x
* textWidth
);
7269 int height
= textHeight
;
7270 if ((y
+ 1) * textHeight
> image
.getHeight()) {
7271 height
= image
.getHeight() - (y
* textHeight
);
7274 Cell cell
= new Cell();
7275 cell
.setImage(image
.getSubimage(x
* textWidth
,
7276 y
* textHeight
, width
, height
));
7282 int x0
= currentState
.cursorX
;
7283 int y0
= currentState
.cursorY
;
7284 for (int y
= 0; y
< cellRows
; y
++) {
7285 for (int x
= 0; x
< cellColumns
; x
++) {
7286 assert (currentState
.cursorX
<= rightMargin
);
7288 // TODO: Render text of current cell first, then image over
7289 // it (accounting for blank pixels). For now, just copy the
7291 DisplayLine line
= display
.get(currentState
.cursorY
);
7292 line
.replace(currentState
.cursorX
, cells
[x
][y
]);
7294 // If at the end of the visible screen, stop.
7295 if (currentState
.cursorX
== rightMargin
) {
7298 // Room for more image on the visible screen.
7299 currentState
.cursorX
++;
7301 if (currentState
.cursorY
< scrollRegionBottom
- 1) {
7302 // Not at the bottom, down a line.
7304 } else if (scroll
== true) {
7305 // At the bottom, scroll as needed.
7308 // At the bottom, no more scrolling, done.
7312 cursorPosition(currentState
.cursorY
, x0
);
7315 if (scroll
== false) {
7316 cursorPosition(y0
, x0
);