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);
1691 if (mouse
.isMouse1()) {
1692 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1697 } else if (mouse
.isMouse2()) {
1698 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1703 } else if (mouse
.isMouse3()) {
1704 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1709 } else if (mouse
.isMouseWheelUp()) {
1711 } else if (mouse
.isMouseWheelDown()) {
1714 // This is motion with no buttons down.
1717 if (mouse
.isAlt()) {
1720 if (mouse
.isCtrl()) {
1723 if (mouse
.isShift()) {
1727 sb
.append(String
.format("%d;%d;%d", buttons
, mouse
.getX() + 1,
1730 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1737 // X10 and UTF8 encodings
1738 sb
.append((char) 0x1B);
1742 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_UP
) {
1743 buttons
= 0x03 + 32;
1744 } else if (mouse
.isMouse1()) {
1745 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1746 buttons
= 0x00 + 32 + 32;
1748 buttons
= 0x00 + 32;
1750 } else if (mouse
.isMouse2()) {
1751 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1752 buttons
= 0x01 + 32 + 32;
1754 buttons
= 0x01 + 32;
1756 } else if (mouse
.isMouse3()) {
1757 if (mouse
.getType() == TMouseEvent
.Type
.MOUSE_MOTION
) {
1758 buttons
= 0x02 + 32 + 32;
1760 buttons
= 0x02 + 32;
1762 } else if (mouse
.isMouseWheelUp()) {
1763 buttons
= 0x04 + 64;
1764 } else if (mouse
.isMouseWheelDown()) {
1765 buttons
= 0x05 + 64;
1767 // This is motion with no buttons down.
1768 buttons
= 0x03 + 32;
1770 if (mouse
.isAlt()) {
1773 if (mouse
.isCtrl()) {
1776 if (mouse
.isShift()) {
1780 sb
.append((char) (buttons
& 0xFF));
1781 sb
.append((char) (mouse
.getX() + 33));
1782 sb
.append((char) (mouse
.getY() + 33));
1785 // System.err.printf("Would write: \'%s\'\n", sb.toString());
1786 writeRemote(sb
.toString());
1790 * Translate the keyboard press to a VT100, VT220, or XTERM sequence and
1791 * send to the remote side.
1793 * @param keypress keypress received from the local user
1795 private void keypress(final TKeypress keypress
) {
1796 writeRemote(keypressToString(keypress
));
1800 * Build one of the complex xterm keystroke sequences, storing the result in
1801 * xterm_keystroke_buffer.
1803 * @param ss3 the prefix to use based on VT100 state.
1804 * @param first the first character, usually a number.
1805 * @param first the last character, one of the following: ~ A B C D F H
1806 * @param ctrl whether or not ctrl is down
1807 * @param alt whether or not alt is down
1808 * @param shift whether or not shift is down
1809 * @return the buffer with the full key sequence
1811 private String
xtermBuildKeySequence(final String ss3
, final char first
,
1812 final char last
, boolean ctrl
, boolean alt
, boolean shift
) {
1814 StringBuilder sb
= new StringBuilder(ss3
);
1815 if ((last
== '~') || (ctrl
== true) || (alt
== true)
1819 if ( (ctrl
== false) && (alt
== false) && (shift
== true)) {
1821 } else if ((ctrl
== false) && (alt
== true) && (shift
== false)) {
1823 } else if ((ctrl
== false) && (alt
== true) && (shift
== true)) {
1825 } else if ((ctrl
== true) && (alt
== false) && (shift
== false)) {
1827 } else if ((ctrl
== true) && (alt
== false) && (shift
== true)) {
1829 } else if ((ctrl
== true) && (alt
== true) && (shift
== false)) {
1831 } else if ((ctrl
== true) && (alt
== true) && (shift
== true)) {
1836 return sb
.toString();
1840 * Translate the keyboard press to a VT100, VT220, or XTERM sequence.
1842 * @param keypress keypress received from the local user
1843 * @return string to transmit to the remote side
1845 @SuppressWarnings("fallthrough")
1846 private String
keypressToString(final TKeypress keypress
) {
1848 if ((fullDuplex
== false) && (!keypress
.isFnKey())) {
1850 * If this is a control character, process it like it came from
1853 if (keypress
.getChar() < 0x20) {
1854 handleControlChar((char) keypress
.getChar());
1856 // Local echo for everything else
1857 printCharacter(keypress
.getChar());
1859 if (displayListener
!= null) {
1860 displayListener
.displayChanged();
1864 if ((newLineMode
== true) && (keypress
.equals(kbEnter
))) {
1869 // Handle control characters
1870 if ((keypress
.isCtrl()) && (!keypress
.isFnKey())) {
1871 StringBuilder sb
= new StringBuilder();
1872 int ch
= keypress
.getChar();
1874 sb
.append(Character
.toChars(ch
));
1875 return sb
.toString();
1878 // Handle alt characters
1879 if ((keypress
.isAlt()) && (!keypress
.isFnKey())) {
1880 StringBuilder sb
= new StringBuilder("\033");
1881 int ch
= keypress
.getChar();
1882 sb
.append(Character
.toChars(ch
));
1883 return sb
.toString();
1886 if (keypress
.equals(kbBackspaceDel
)) {
1899 if (keypress
.equalsWithoutModifiers(kbLeft
)) {
1902 switch (arrowKeyMode
) {
1904 return xtermBuildKeySequence("\033[", '1', 'D',
1905 keypress
.isCtrl(), keypress
.isAlt(),
1906 keypress
.isShift());
1908 return xtermBuildKeySequence("\033", '1', 'D',
1909 keypress
.isCtrl(), keypress
.isAlt(),
1910 keypress
.isShift());
1912 return xtermBuildKeySequence("\033O", '1', 'D',
1913 keypress
.isCtrl(), keypress
.isAlt(),
1914 keypress
.isShift());
1917 switch (arrowKeyMode
) {
1928 if (keypress
.equalsWithoutModifiers(kbRight
)) {
1931 switch (arrowKeyMode
) {
1933 return xtermBuildKeySequence("\033[", '1', 'C',
1934 keypress
.isCtrl(), keypress
.isAlt(),
1935 keypress
.isShift());
1937 return xtermBuildKeySequence("\033", '1', 'C',
1938 keypress
.isCtrl(), keypress
.isAlt(),
1939 keypress
.isShift());
1941 return xtermBuildKeySequence("\033O", '1', 'C',
1942 keypress
.isCtrl(), keypress
.isAlt(),
1943 keypress
.isShift());
1946 switch (arrowKeyMode
) {
1957 if (keypress
.equalsWithoutModifiers(kbUp
)) {
1960 switch (arrowKeyMode
) {
1962 return xtermBuildKeySequence("\033[", '1', 'A',
1963 keypress
.isCtrl(), keypress
.isAlt(),
1964 keypress
.isShift());
1966 return xtermBuildKeySequence("\033", '1', 'A',
1967 keypress
.isCtrl(), keypress
.isAlt(),
1968 keypress
.isShift());
1970 return xtermBuildKeySequence("\033O", '1', 'A',
1971 keypress
.isCtrl(), keypress
.isAlt(),
1972 keypress
.isShift());
1975 switch (arrowKeyMode
) {
1986 if (keypress
.equalsWithoutModifiers(kbDown
)) {
1989 switch (arrowKeyMode
) {
1991 return xtermBuildKeySequence("\033[", '1', 'B',
1992 keypress
.isCtrl(), keypress
.isAlt(),
1993 keypress
.isShift());
1995 return xtermBuildKeySequence("\033", '1', 'B',
1996 keypress
.isCtrl(), keypress
.isAlt(),
1997 keypress
.isShift());
1999 return xtermBuildKeySequence("\033O", '1', 'B',
2000 keypress
.isCtrl(), keypress
.isAlt(),
2001 keypress
.isShift());
2004 switch (arrowKeyMode
) {
2015 if (keypress
.equalsWithoutModifiers(kbHome
)) {
2018 switch (arrowKeyMode
) {
2020 return xtermBuildKeySequence("\033[", '1', 'H',
2021 keypress
.isCtrl(), keypress
.isAlt(),
2022 keypress
.isShift());
2024 return xtermBuildKeySequence("\033", '1', 'H',
2025 keypress
.isCtrl(), keypress
.isAlt(),
2026 keypress
.isShift());
2028 return xtermBuildKeySequence("\033O", '1', 'H',
2029 keypress
.isCtrl(), keypress
.isAlt(),
2030 keypress
.isShift());
2033 switch (arrowKeyMode
) {
2044 if (keypress
.equalsWithoutModifiers(kbEnd
)) {
2047 switch (arrowKeyMode
) {
2049 return xtermBuildKeySequence("\033[", '1', 'F',
2050 keypress
.isCtrl(), keypress
.isAlt(),
2051 keypress
.isShift());
2053 return xtermBuildKeySequence("\033", '1', 'F',
2054 keypress
.isCtrl(), keypress
.isAlt(),
2055 keypress
.isShift());
2057 return xtermBuildKeySequence("\033O", '1', 'F',
2058 keypress
.isCtrl(), keypress
.isAlt(),
2059 keypress
.isShift());
2062 switch (arrowKeyMode
) {
2073 if (keypress
.equals(kbF1
)) {
2081 if (keypress
.equals(kbF2
)) {
2089 if (keypress
.equals(kbF3
)) {
2097 if (keypress
.equals(kbF4
)) {
2105 if (keypress
.equals(kbF5
)) {
2118 if (keypress
.equals(kbF6
)) {
2131 if (keypress
.equals(kbF7
)) {
2144 if (keypress
.equals(kbF8
)) {
2157 if (keypress
.equals(kbF9
)) {
2170 if (keypress
.equals(kbF10
)) {
2183 if (keypress
.equals(kbF11
)) {
2187 if (keypress
.equals(kbF12
)) {
2191 if (keypress
.equals(kbShiftF1
)) {
2196 if (type
== DeviceType
.XTERM
) {
2202 if (keypress
.equals(kbShiftF2
)) {
2207 if (type
== DeviceType
.XTERM
) {
2213 if (keypress
.equals(kbShiftF3
)) {
2218 if (type
== DeviceType
.XTERM
) {
2224 if (keypress
.equals(kbShiftF4
)) {
2229 if (type
== DeviceType
.XTERM
) {
2235 if (keypress
.equals(kbShiftF5
)) {
2237 return "\033[15;2~";
2240 if (keypress
.equals(kbShiftF6
)) {
2242 return "\033[17;2~";
2245 if (keypress
.equals(kbShiftF7
)) {
2247 return "\033[18;2~";
2250 if (keypress
.equals(kbShiftF8
)) {
2252 return "\033[19;2~";
2255 if (keypress
.equals(kbShiftF9
)) {
2257 return "\033[20;2~";
2260 if (keypress
.equals(kbShiftF10
)) {
2262 return "\033[21;2~";
2265 if (keypress
.equals(kbShiftF11
)) {
2267 return "\033[23;2~";
2270 if (keypress
.equals(kbShiftF12
)) {
2272 return "\033[24;2~";
2275 if (keypress
.equals(kbCtrlF1
)) {
2280 if (type
== DeviceType
.XTERM
) {
2286 if (keypress
.equals(kbCtrlF2
)) {
2291 if (type
== DeviceType
.XTERM
) {
2297 if (keypress
.equals(kbCtrlF3
)) {
2302 if (type
== DeviceType
.XTERM
) {
2308 if (keypress
.equals(kbCtrlF4
)) {
2313 if (type
== DeviceType
.XTERM
) {
2319 if (keypress
.equals(kbCtrlF5
)) {
2321 return "\033[15;5~";
2324 if (keypress
.equals(kbCtrlF6
)) {
2326 return "\033[17;5~";
2329 if (keypress
.equals(kbCtrlF7
)) {
2331 return "\033[18;5~";
2334 if (keypress
.equals(kbCtrlF8
)) {
2336 return "\033[19;5~";
2339 if (keypress
.equals(kbCtrlF9
)) {
2341 return "\033[20;5~";
2344 if (keypress
.equals(kbCtrlF10
)) {
2346 return "\033[21;5~";
2349 if (keypress
.equals(kbCtrlF11
)) {
2351 return "\033[23;5~";
2354 if (keypress
.equals(kbCtrlF12
)) {
2356 return "\033[24;5~";
2359 if (keypress
.equalsWithoutModifiers(kbPgUp
)) {
2362 return xtermBuildKeySequence("\033[", '5', '~',
2363 keypress
.isCtrl(), keypress
.isAlt(),
2364 keypress
.isShift());
2370 if (keypress
.equalsWithoutModifiers(kbPgDn
)) {
2373 return xtermBuildKeySequence("\033[", '6', '~',
2374 keypress
.isCtrl(), keypress
.isAlt(),
2375 keypress
.isShift());
2381 if (keypress
.equalsWithoutModifiers(kbIns
)) {
2384 return xtermBuildKeySequence("\033[", '2', '~',
2385 keypress
.isCtrl(), keypress
.isAlt(),
2386 keypress
.isShift());
2392 if (keypress
.equalsWithoutModifiers(kbDel
)) {
2395 return xtermBuildKeySequence("\033[", '3', '~',
2396 keypress
.isCtrl(), keypress
.isAlt(),
2397 keypress
.isShift());
2399 // Delete sends real delete for VTxxx
2404 if (keypress
.equals(kbEnter
)) {
2408 if (keypress
.equals(kbEsc
)) {
2412 if (keypress
.equals(kbAltEsc
)) {
2416 if (keypress
.equals(kbTab
)) {
2420 if ((keypress
.equalsWithoutModifiers(kbBackTab
)) ||
2421 (keypress
.equals(kbShiftTab
))
2431 // Non-alt, non-ctrl characters
2432 if (!keypress
.isFnKey()) {
2433 StringBuilder sb
= new StringBuilder();
2434 sb
.append(Character
.toChars(keypress
.getChar()));
2435 return sb
.toString();
2441 * Map a symbol in any one of the VT100/VT220 character sets to a Unicode
2444 * @param ch 8-bit character from the remote side
2445 * @param charsetGl character set defined for GL
2446 * @param charsetGr character set defined for GR
2447 * @return character to display on the screen
2449 private char mapCharacterCharset(final int ch
,
2450 final CharacterSet charsetGl
,
2451 final CharacterSet charsetGr
) {
2453 int lookupChar
= ch
;
2454 CharacterSet lookupCharset
= charsetGl
;
2457 assert ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
));
2458 lookupCharset
= charsetGr
;
2462 switch (lookupCharset
) {
2465 return DECCharacterSets
.SPECIAL_GRAPHICS
[lookupChar
];
2468 return DECCharacterSets
.UK
[lookupChar
];
2471 return DECCharacterSets
.US_ASCII
[lookupChar
];
2474 return DECCharacterSets
.NL
[lookupChar
];
2477 return DECCharacterSets
.FI
[lookupChar
];
2480 return DECCharacterSets
.FR
[lookupChar
];
2483 return DECCharacterSets
.FR_CA
[lookupChar
];
2486 return DECCharacterSets
.DE
[lookupChar
];
2489 return DECCharacterSets
.IT
[lookupChar
];
2492 return DECCharacterSets
.NO
[lookupChar
];
2495 return DECCharacterSets
.ES
[lookupChar
];
2498 return DECCharacterSets
.SV
[lookupChar
];
2501 return DECCharacterSets
.SWISS
[lookupChar
];
2503 case DEC_SUPPLEMENTAL
:
2504 return DECCharacterSets
.DEC_SUPPLEMENTAL
[lookupChar
];
2507 return DECCharacterSets
.VT52_SPECIAL_GRAPHICS
[lookupChar
];
2510 return DECCharacterSets
.US_ASCII
[lookupChar
];
2513 return DECCharacterSets
.US_ASCII
[lookupChar
];
2516 throw new IllegalArgumentException("Invalid character set value: "
2522 * Map an 8-bit byte into a printable character.
2524 * @param ch either 8-bit or Unicode character from the remote side
2525 * @return character to display on the screen
2527 private int mapCharacter(final int ch
) {
2529 // Unicode character, just return it
2533 CharacterSet charsetGl
= currentState
.g0Charset
;
2534 CharacterSet charsetGr
= currentState
.grCharset
;
2536 if (vt52Mode
== true) {
2537 if (shiftOut
== true) {
2538 // Shifted out character, pull from VT52 graphics
2539 charsetGl
= currentState
.g1Charset
;
2540 charsetGr
= CharacterSet
.US
;
2543 charsetGl
= currentState
.g0Charset
;
2544 charsetGr
= CharacterSet
.US
;
2547 // Pull the character
2548 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2552 if (shiftOut
== true) {
2553 // Shifted out character, pull from G1
2554 charsetGl
= currentState
.g1Charset
;
2555 charsetGr
= currentState
.grCharset
;
2557 // Pull the character
2558 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2562 if (singleshift
== Singleshift
.SS2
) {
2564 singleshift
= Singleshift
.NONE
;
2566 // Shifted out character, pull from G2
2567 charsetGl
= currentState
.g2Charset
;
2568 charsetGr
= currentState
.grCharset
;
2572 if (singleshift
== Singleshift
.SS3
) {
2574 singleshift
= Singleshift
.NONE
;
2576 // Shifted out character, pull from G3
2577 charsetGl
= currentState
.g3Charset
;
2578 charsetGr
= currentState
.grCharset
;
2581 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
2582 // Check for locking shift
2584 switch (currentState
.glLockshift
) {
2587 throw new IllegalArgumentException("programming bug");
2590 throw new IllegalArgumentException("programming bug");
2593 throw new IllegalArgumentException("programming bug");
2597 charsetGl
= currentState
.g2Charset
;
2602 charsetGl
= currentState
.g3Charset
;
2607 charsetGl
= currentState
.g0Charset
;
2611 switch (currentState
.grLockshift
) {
2614 throw new IllegalArgumentException("programming bug");
2617 throw new IllegalArgumentException("programming bug");
2621 charsetGr
= currentState
.g1Charset
;
2626 charsetGr
= currentState
.g2Charset
;
2631 charsetGr
= currentState
.g3Charset
;
2636 charsetGr
= CharacterSet
.DEC_SUPPLEMENTAL
;
2643 // Pull the character
2644 return mapCharacterCharset(ch
, charsetGl
, charsetGr
);
2648 * Scroll the text within a scrolling region up n lines.
2650 * @param regionTop top row of the scrolling region
2651 * @param regionBottom bottom row of the scrolling region
2652 * @param n number of lines to scroll
2654 private void scrollingRegionScrollUp(final int regionTop
,
2655 final int regionBottom
, final int n
) {
2657 if (regionTop
>= regionBottom
) {
2661 // Sanity check: see if there will be any characters left after the
2663 if (regionBottom
+ 1 - regionTop
<= n
) {
2664 // There won't be anything left in the region, so just call
2665 // eraseScreen() and return.
2666 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2670 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2671 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2672 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2674 List
<DisplayLine
> displayMiddle
= display
.subList(regionBottom
+ 1
2675 - remaining
, regionBottom
+ 1);
2676 display
= new ArrayList
<DisplayLine
>(displayTop
);
2677 display
.addAll(displayMiddle
);
2678 for (int i
= 0; i
< n
; i
++) {
2679 DisplayLine line
= new DisplayLine(currentState
.attr
);
2680 line
.setReverseColor(reverseVideo
);
2683 display
.addAll(displayBottom
);
2685 assert (display
.size() == height
);
2689 * Scroll the text within a scrolling region down n lines.
2691 * @param regionTop top row of the scrolling region
2692 * @param regionBottom bottom row of the scrolling region
2693 * @param n number of lines to scroll
2695 private void scrollingRegionScrollDown(final int regionTop
,
2696 final int regionBottom
, final int n
) {
2698 if (regionTop
>= regionBottom
) {
2702 // Sanity check: see if there will be any characters left after the
2704 if (regionBottom
+ 1 - regionTop
<= n
) {
2705 // There won't be anything left in the region, so just call
2706 // eraseScreen() and return.
2707 eraseScreen(regionTop
, 0, regionBottom
, width
- 1, false);
2711 int remaining
= regionBottom
+ 1 - regionTop
- n
;
2712 List
<DisplayLine
> displayTop
= display
.subList(0, regionTop
);
2713 List
<DisplayLine
> displayBottom
= display
.subList(regionBottom
+ 1,
2715 List
<DisplayLine
> displayMiddle
= display
.subList(regionTop
,
2716 regionTop
+ remaining
);
2717 display
= new ArrayList
<DisplayLine
>(displayTop
);
2718 for (int i
= 0; i
< n
; i
++) {
2719 DisplayLine line
= new DisplayLine(currentState
.attr
);
2720 line
.setReverseColor(reverseVideo
);
2723 display
.addAll(displayMiddle
);
2724 display
.addAll(displayBottom
);
2726 assert (display
.size() == height
);
2730 * Process a control character.
2732 * @param ch 8-bit character from the remote side
2734 private void handleControlChar(final char ch
) {
2735 assert ((ch
<= 0x1F) || ((ch
>= 0x7F) && (ch
<= 0x9F)));
2746 // Transmit the answerback message.
2757 cursorLeft(1, false);
2762 advanceToNextTabStop();
2788 currentState
.glLockshift
= LockshiftMode
.NONE
;
2794 currentState
.glLockshift
= LockshiftMode
.NONE
;
2819 singleshift
= Singleshift
.SS2
;
2824 singleshift
= Singleshift
.SS3
;
2834 * Advance the cursor to the next tab stop.
2836 private void advanceToNextTabStop() {
2837 if (tabStops
.size() == 0) {
2838 // Go to the rightmost column
2839 cursorRight(rightMargin
- currentState
.cursorX
, false);
2842 for (Integer stop
: tabStops
) {
2843 if (stop
> currentState
.cursorX
) {
2844 cursorRight(stop
- currentState
.cursorX
, false);
2849 * We got here, meaning there isn't a tab stop beyond the current
2850 * cursor position. Place the cursor of the right-most edge of the
2853 cursorRight(rightMargin
- currentState
.cursorX
, false);
2857 * Save a character into the collect buffer.
2859 * @param ch character to save
2861 private void collect(final char ch
) {
2862 collectBuffer
.append(ch
);
2866 * Save a byte into the CSI parameters buffer.
2868 * @param ch byte to save
2870 private void param(final byte ch
) {
2871 if (csiParams
.size() == 0) {
2872 csiParams
.add(Integer
.valueOf(0));
2874 Integer x
= csiParams
.get(csiParams
.size() - 1);
2875 if ((ch
>= '0') && (ch
<= '9')) {
2878 csiParams
.set(csiParams
.size() - 1, x
);
2881 if ((ch
== ';') && (csiParams
.size() < 16)) {
2882 csiParams
.add(Integer
.valueOf(0));
2887 * Get a CSI parameter value, with a default.
2889 * @param position parameter index. 0 is the first parameter.
2890 * @param defaultValue value to use if csiParams[position] doesn't exist
2891 * @return parameter value
2893 private int getCsiParam(final int position
, final int defaultValue
) {
2894 if (csiParams
.size() < position
+ 1) {
2895 return defaultValue
;
2897 return csiParams
.get(position
).intValue();
2901 * Get a CSI parameter value, clamped to within min/max.
2903 * @param position parameter index. 0 is the first parameter.
2904 * @param defaultValue value to use if csiParams[position] doesn't exist
2905 * @param minValue minimum value inclusive
2906 * @param maxValue maximum value inclusive
2907 * @return parameter value
2909 private int getCsiParam(final int position
, final int defaultValue
,
2910 final int minValue
, final int maxValue
) {
2912 assert (minValue
<= maxValue
);
2913 int value
= getCsiParam(position
, defaultValue
);
2914 if (value
< minValue
) {
2917 if (value
> maxValue
) {
2924 * Set or unset a toggle.
2926 * @param value true for set ('h'), false for reset ('l')
2928 private void setToggle(final boolean value
) {
2929 boolean decPrivateModeFlag
= false;
2931 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
2932 if (collectBuffer
.charAt(i
) == '?') {
2933 decPrivateModeFlag
= true;
2938 for (Integer i
: csiParams
) {
2943 if (decPrivateModeFlag
== true) {
2945 if (value
== true) {
2946 // Use application arrow keys
2947 arrowKeyMode
= ArrowKeyMode
.VT100
;
2949 // Use ANSI arrow keys
2950 arrowKeyMode
= ArrowKeyMode
.ANSI
;
2955 if (decPrivateModeFlag
== true) {
2956 if (value
== false) {
2960 arrowKeyMode
= ArrowKeyMode
.VT52
;
2963 * From the VT102 docs: "You use ANSI mode to select
2964 * most terminal features; the terminal uses the same
2965 * features when it switches to VT52 mode. You
2966 * cannot, however, change most of these features in
2969 * In other words, do not reset any other attributes
2970 * when switching between VT52 submode and ANSI.
2972 * HOWEVER, the real vt100 does switch the character
2973 * set according to Usenet.
2975 currentState
.g0Charset
= CharacterSet
.US
;
2976 currentState
.g1Charset
= CharacterSet
.DRAWING
;
2979 if ((type
== DeviceType
.VT220
)
2980 || (type
== DeviceType
.XTERM
)) {
2982 // VT52 mode is explicitly 7-bit
2984 singleshift
= Singleshift
.NONE
;
2989 if (value
== true) {
2990 // Turn off keyboard
2999 if (decPrivateModeFlag
== true) {
3001 if (value
== true) {
3008 if ((displayListener
!= null)
3009 && (type
== DeviceType
.XTERM
)
3011 // For xterms, reset to the actual width, not 80
3013 width
= displayListener
.getDisplayWidth();
3014 rightMargin
= width
- 1;
3017 width
= rightMargin
+ 1;
3020 // Entire screen is cleared, and scrolling region is
3022 eraseScreen(0, 0, height
- 1, width
- 1, false);
3023 scrollRegionTop
= 0;
3024 scrollRegionBottom
= height
- 1;
3025 // Also home the cursor
3026 cursorPosition(0, 0);
3030 if (decPrivateModeFlag
== true) {
3032 if (value
== true) {
3041 if (value
== true) {
3049 if (decPrivateModeFlag
== true) {
3051 if (value
== true) {
3053 * Set selects reverse screen, a white screen
3054 * background with black characters.
3056 if (reverseVideo
!= true) {
3058 * If in normal video, switch it back
3060 invertDisplayColors();
3062 reverseVideo
= true;
3065 * Reset selects normal screen, a black screen
3066 * background with white characters.
3068 if (reverseVideo
== true) {
3070 * If in reverse video already, switch it back
3072 invertDisplayColors();
3074 reverseVideo
= false;
3079 if (decPrivateModeFlag
== true) {
3081 if (value
== true) {
3082 // Origin is relative to scroll region cursor.
3083 // Cursor can NEVER leave scrolling region.
3084 currentState
.originMode
= true;
3085 cursorPosition(0, 0);
3087 // Origin is absolute to entire screen. Cursor can
3088 // leave the scrolling region via cup() and hvp().
3089 currentState
.originMode
= false;
3090 cursorPosition(0, 0);
3095 if (decPrivateModeFlag
== true) {
3097 if (value
== true) {
3099 currentState
.lineWrap
= true;
3101 // Turn linewrap off
3102 currentState
.lineWrap
= false;
3107 if (decPrivateModeFlag
== true) {
3109 if (value
== true) {
3110 // Keyboard auto-repeat on
3113 // Keyboard auto-repeat off
3119 if (decPrivateModeFlag
== false) {
3121 if (value
== true) {
3131 if (decPrivateModeFlag
== true) {
3137 if (decPrivateModeFlag
== true) {
3143 if (decPrivateModeFlag
== false) {
3145 if (value
== true) {
3147 * Set causes a received linefeed, form feed, or
3148 * vertical tab to move cursor to first column of
3149 * next line. RETURN transmits both a carriage return
3150 * and linefeed. This selection is also called new
3156 * Reset causes a received linefeed, form feed, or
3157 * vertical tab to move cursor to next line in
3158 * current column. RETURN transmits a carriage
3161 newLineMode
= false;
3167 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3168 if (decPrivateModeFlag
== true) {
3170 if (value
== true) {
3172 cursorVisible
= true;
3175 cursorVisible
= false;
3182 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
3183 if (decPrivateModeFlag
== true) {
3185 if (value
== true) {
3186 // Select national mode NRC
3189 // Select multi-national mode
3198 if (type
== DeviceType
.XTERM
) {
3199 if (decPrivateModeFlag
== true) {
3200 if (value
== true) {
3201 // Enable sixel scrolling (default).
3204 // Disable sixel scrolling.
3213 if ((type
== DeviceType
.XTERM
)
3214 && (decPrivateModeFlag
== true)
3216 // Mouse: normal tracking mode
3217 if (value
== true) {
3218 mouseProtocol
= MouseProtocol
.NORMAL
;
3220 mouseProtocol
= MouseProtocol
.OFF
;
3226 if ((type
== DeviceType
.XTERM
)
3227 && (decPrivateModeFlag
== true)
3229 // Mouse: normal tracking mode
3230 if (value
== true) {
3231 mouseProtocol
= MouseProtocol
.BUTTONEVENT
;
3233 mouseProtocol
= MouseProtocol
.OFF
;
3239 if ((type
== DeviceType
.XTERM
)
3240 && (decPrivateModeFlag
== true)
3242 // Mouse: Any-event tracking mode
3243 if (value
== true) {
3244 mouseProtocol
= MouseProtocol
.ANYEVENT
;
3246 mouseProtocol
= MouseProtocol
.OFF
;
3252 if ((type
== DeviceType
.XTERM
)
3253 && (decPrivateModeFlag
== true)
3255 // Mouse: UTF-8 coordinates
3256 if (value
== true) {
3257 mouseEncoding
= MouseEncoding
.UTF8
;
3259 mouseEncoding
= MouseEncoding
.X10
;
3265 if ((type
== DeviceType
.XTERM
)
3266 && (decPrivateModeFlag
== true)
3268 // Mouse: SGR coordinates
3269 if (value
== true) {
3270 mouseEncoding
= MouseEncoding
.SGR
;
3272 mouseEncoding
= MouseEncoding
.X10
;
3278 if (type
== DeviceType
.XTERM
) {
3279 if (decPrivateModeFlag
== true) {
3280 if (value
== true) {
3281 // Use private color registers for each sixel
3282 // graphic (default).
3283 sixelPalette
= null;
3285 // Use shared color registers for each sixel
3287 sixelPalette
= new HashMap
<Integer
, java
.awt
.Color
>();
3301 * DECSC - Save cursor.
3303 private void decsc() {
3304 savedState
.setTo(currentState
);
3308 * DECRC - Restore cursor.
3310 private void decrc() {
3311 currentState
.setTo(savedState
);
3317 private void ind() {
3318 // Move the cursor and scroll if necessary. If at the bottom line
3319 // already, a scroll up is supposed to be performed.
3320 if (currentState
.cursorY
== scrollRegionBottom
) {
3321 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
3323 cursorDown(1, true);
3327 * RI - Reverse index.
3330 // Move the cursor and scroll if necessary. If at the top line
3331 // already, a scroll down is supposed to be performed.
3332 if (currentState
.cursorY
== scrollRegionTop
) {
3333 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
, 1);
3341 private void nel() {
3342 // Move the cursor and scroll if necessary. If at the bottom line
3343 // already, a scroll up is supposed to be performed.
3344 if (currentState
.cursorY
== scrollRegionBottom
) {
3345 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
, 1);
3347 cursorDown(1, true);
3349 // Reset to the beginning of the next line
3350 currentState
.cursorX
= 0;
3354 * DECKPAM - Keypad application mode.
3356 private void deckpam() {
3357 keypadMode
= KeypadMode
.Application
;
3361 * DECKPNM - Keypad numeric mode.
3363 private void deckpnm() {
3364 keypadMode
= KeypadMode
.Numeric
;
3370 * @param n number of spaces to move
3371 * @param honorScrollRegion if true, then do nothing if the cursor is
3372 * outside the scrolling region
3374 private void cursorUp(final int n
, final boolean honorScrollRegion
) {
3378 * Special case: if a user moves the cursor from the right margin, we
3379 * have to reset the VT100 right margin flag.
3382 wrapLineFlag
= false;
3385 for (int i
= 0; i
< n
; i
++) {
3386 if (honorScrollRegion
== true) {
3387 // Honor the scrolling region
3388 if ((currentState
.cursorY
< scrollRegionTop
)
3389 || (currentState
.cursorY
> scrollRegionBottom
)
3391 // Outside region, do nothing
3394 // Inside region, go up
3395 top
= scrollRegionTop
;
3397 // Non-scrolling case
3401 if (currentState
.cursorY
> top
) {
3402 currentState
.cursorY
--;
3408 * Move down n spaces.
3410 * @param n number of spaces to move
3411 * @param honorScrollRegion if true, then do nothing if the cursor is
3412 * outside the scrolling region
3414 private void cursorDown(final int n
, final boolean honorScrollRegion
) {
3418 * Special case: if a user moves the cursor from the right margin, we
3419 * have to reset the VT100 right margin flag.
3422 wrapLineFlag
= false;
3425 for (int i
= 0; i
< n
; i
++) {
3427 if (honorScrollRegion
== true) {
3428 // Honor the scrolling region
3429 if (currentState
.cursorY
> scrollRegionBottom
) {
3430 // Outside region, do nothing
3433 // Inside region, go down
3434 bottom
= scrollRegionBottom
;
3436 // Non-scrolling case
3437 bottom
= height
- 1;
3440 if (currentState
.cursorY
< bottom
) {
3441 currentState
.cursorY
++;
3447 * Move left n spaces.
3449 * @param n number of spaces to move
3450 * @param honorScrollRegion if true, then do nothing if the cursor is
3451 * outside the scrolling region
3453 private void cursorLeft(final int n
, final boolean honorScrollRegion
) {
3455 * Special case: if a user moves the cursor from the right margin, we
3456 * have to reset the VT100 right margin flag.
3459 wrapLineFlag
= false;
3462 for (int i
= 0; i
< n
; i
++) {
3463 if (honorScrollRegion
== true) {
3464 // Honor the scrolling region
3465 if ((currentState
.cursorY
< scrollRegionTop
)
3466 || (currentState
.cursorY
> scrollRegionBottom
)
3468 // Outside region, do nothing
3473 if (currentState
.cursorX
> 0) {
3474 currentState
.cursorX
--;
3480 * Move right n spaces.
3482 * @param n number of spaces to move
3483 * @param honorScrollRegion if true, then do nothing if the cursor is
3484 * outside the scrolling region
3486 private void cursorRight(final int n
, final boolean honorScrollRegion
) {
3487 int rightMargin
= this.rightMargin
;
3490 * Special case: if a user moves the cursor from the right margin, we
3491 * have to reset the VT100 right margin flag.
3494 wrapLineFlag
= false;
3497 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
3498 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
3501 for (int i
= 0; i
< n
; i
++) {
3502 if (honorScrollRegion
== true) {
3503 // Honor the scrolling region
3504 if ((currentState
.cursorY
< scrollRegionTop
)
3505 || (currentState
.cursorY
> scrollRegionBottom
)
3507 // Outside region, do nothing
3512 if (currentState
.cursorX
< rightMargin
) {
3513 currentState
.cursorX
++;
3519 * Move cursor to (col, row) where (0, 0) is the top-left corner.
3521 * @param row row to move to
3522 * @param col column to move to
3524 private void cursorPosition(int row
, final int col
) {
3525 int rightMargin
= this.rightMargin
;
3530 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
3531 rightMargin
= ((rightMargin
+ 1) / 2) - 1;
3534 // Set column number
3535 currentState
.cursorX
= col
;
3537 // Sanity check, bring column back to margin.
3538 if (currentState
.cursorX
> rightMargin
) {
3539 currentState
.cursorX
= rightMargin
;
3543 if (currentState
.originMode
== true) {
3544 row
+= scrollRegionTop
;
3546 if (currentState
.cursorY
< row
) {
3547 cursorDown(row
- currentState
.cursorY
, false);
3548 } else if (currentState
.cursorY
> row
) {
3549 cursorUp(currentState
.cursorY
- row
, false);
3552 wrapLineFlag
= false;
3556 * HTS - Horizontal tabulation set.
3558 private void hts() {
3559 for (Integer stop
: tabStops
) {
3560 if (stop
== currentState
.cursorX
) {
3561 // Already have a tab stop here
3566 // Append a tab stop to the end of the array and resort them
3567 tabStops
.add(currentState
.cursorX
);
3568 Collections
.sort(tabStops
);
3572 * DECSWL - Single-width line.
3574 private void decswl() {
3575 display
.get(currentState
.cursorY
).setDoubleWidth(false);
3576 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3580 * DECDWL - Double-width line.
3582 private void decdwl() {
3583 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3584 display
.get(currentState
.cursorY
).setDoubleHeight(0);
3588 * DECHDL - Double-height + double-width line.
3590 * @param topHalf if true, this sets the row to be the top half row of a
3593 private void dechdl(final boolean topHalf
) {
3594 display
.get(currentState
.cursorY
).setDoubleWidth(true);
3595 if (topHalf
== true) {
3596 display
.get(currentState
.cursorY
).setDoubleHeight(1);
3598 display
.get(currentState
.cursorY
).setDoubleHeight(2);
3603 * DECALN - Screen alignment display.
3605 private void decaln() {
3606 Cell newCell
= new Cell('E');
3607 for (DisplayLine line
: display
) {
3608 for (int i
= 0; i
< line
.length(); i
++) {
3609 line
.replace(i
, newCell
);
3615 * DECSCL - Compatibility level.
3617 private void decscl() {
3618 int i
= getCsiParam(0, 0);
3619 int j
= getCsiParam(1, 0);
3623 currentState
.g0Charset
= CharacterSet
.US
;
3624 currentState
.g1Charset
= CharacterSet
.DRAWING
;
3626 } else if (i
== 62) {
3628 if ((j
== 0) || (j
== 2)) {
3630 } else if (j
== 1) {
3637 * CUD - Cursor down.
3639 private void cud() {
3640 cursorDown(getCsiParam(0, 1, 1, height
), true);
3644 * CUF - Cursor forward.
3646 private void cuf() {
3647 cursorRight(getCsiParam(0, 1, 1, rightMargin
+ 1), true);
3651 * CUB - Cursor backward.
3653 private void cub() {
3654 cursorLeft(getCsiParam(0, 1, 1, currentState
.cursorX
+ 1), true);
3660 private void cuu() {
3661 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3665 * CUP - Cursor position.
3667 private void cup() {
3668 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3669 getCsiParam(1, 1, 1, rightMargin
+ 1) - 1);
3673 * CNL - Cursor down and to column 1.
3675 private void cnl() {
3676 cursorDown(getCsiParam(0, 1, 1, height
), true);
3678 cursorLeft(currentState
.cursorX
, true);
3682 * CPL - Cursor up and to column 1.
3684 private void cpl() {
3685 cursorUp(getCsiParam(0, 1, 1, currentState
.cursorY
+ 1), true);
3687 cursorLeft(currentState
.cursorX
, true);
3691 * CHA - Cursor to column # in current row.
3693 private void cha() {
3694 cursorPosition(currentState
.cursorY
,
3695 getCsiParam(0, 1, 1, rightMargin
+ 1) - 1);
3699 * VPA - Cursor to row #, same column.
3701 private void vpa() {
3702 cursorPosition(getCsiParam(0, 1, 1, height
) - 1,
3703 currentState
.cursorX
);
3707 * ED - Erase in display.
3710 boolean honorProtected
= false;
3711 boolean decPrivateModeFlag
= false;
3713 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3714 if (collectBuffer
.charAt(i
) == '?') {
3715 decPrivateModeFlag
= true;
3720 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3721 && (decPrivateModeFlag
== true)
3723 honorProtected
= true;
3726 int i
= getCsiParam(0, 0);
3729 // Erase from here to end of screen
3730 if (currentState
.cursorY
< height
- 1) {
3731 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1, width
- 1,
3734 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3735 } else if (i
== 1) {
3736 // Erase from beginning of screen to here
3737 eraseScreen(0, 0, currentState
.cursorY
- 1, width
- 1,
3739 eraseLine(0, currentState
.cursorX
, honorProtected
);
3740 } else if (i
== 2) {
3741 // Erase entire screen
3742 eraseScreen(0, 0, height
- 1, width
- 1, honorProtected
);
3747 * EL - Erase in line.
3750 boolean honorProtected
= false;
3751 boolean decPrivateModeFlag
= false;
3753 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
3754 if (collectBuffer
.charAt(i
) == '?') {
3755 decPrivateModeFlag
= true;
3760 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
3761 && (decPrivateModeFlag
== true)
3763 honorProtected
= true;
3766 int i
= getCsiParam(0, 0);
3769 // Erase from here to end of line
3770 eraseLine(currentState
.cursorX
, width
- 1, honorProtected
);
3771 } else if (i
== 1) {
3772 // Erase from beginning of line to here
3773 eraseLine(0, currentState
.cursorX
, honorProtected
);
3774 } else if (i
== 2) {
3775 // Erase entire line
3776 eraseLine(0, width
- 1, honorProtected
);
3781 * ECH - Erase # of characters in current row.
3783 private void ech() {
3784 int i
= getCsiParam(0, 1, 1, width
);
3786 // Erase from here to i characters
3787 eraseLine(currentState
.cursorX
, currentState
.cursorX
+ i
- 1, false);
3794 int i
= getCsiParam(0, 1);
3796 if ((currentState
.cursorY
>= scrollRegionTop
)
3797 && (currentState
.cursorY
<= scrollRegionBottom
)
3800 // I can get the same effect with a scroll-down
3801 scrollingRegionScrollDown(currentState
.cursorY
,
3802 scrollRegionBottom
, i
);
3807 * DCH - Delete char.
3809 private void dch() {
3810 int n
= getCsiParam(0, 1);
3811 DisplayLine line
= display
.get(currentState
.cursorY
);
3812 Cell blank
= new Cell();
3813 for (int i
= 0; i
< n
; i
++) {
3814 line
.delete(currentState
.cursorX
, blank
);
3819 * ICH - Insert blank char at cursor.
3821 private void ich() {
3822 int n
= getCsiParam(0, 1);
3823 DisplayLine line
= display
.get(currentState
.cursorY
);
3824 Cell blank
= new Cell();
3825 for (int i
= 0; i
< n
; i
++) {
3826 line
.insert(currentState
.cursorX
, blank
);
3834 int i
= getCsiParam(0, 1);
3836 if ((currentState
.cursorY
>= scrollRegionTop
)
3837 && (currentState
.cursorY
<= scrollRegionBottom
)) {
3839 // I can get the same effect with a scroll-down
3840 scrollingRegionScrollUp(currentState
.cursorY
,
3841 scrollRegionBottom
, i
);
3846 * HVP - Horizontal and vertical position.
3848 private void hvp() {
3853 * REP - Repeat character.
3855 private void rep() {
3856 int n
= getCsiParam(0, 1);
3857 for (int i
= 0; i
< n
; i
++) {
3858 printCharacter(repCh
);
3866 scrollingRegionScrollUp(scrollRegionTop
, scrollRegionBottom
,
3867 getCsiParam(0, 1, 1, height
));
3874 scrollingRegionScrollDown(scrollRegionTop
, scrollRegionBottom
,
3875 getCsiParam(0, 1, 1, height
));
3879 * CBT - Go back X tab stops.
3881 private void cbt() {
3882 int tabsToMove
= getCsiParam(0, 1);
3885 for (int i
= 0; i
< tabsToMove
; i
++) {
3886 int j
= currentState
.cursorX
;
3887 for (tabI
= 0; tabI
< tabStops
.size(); tabI
++) {
3888 if (tabStops
.get(tabI
) >= currentState
.cursorX
) {
3896 j
= tabStops
.get(tabI
);
3898 cursorPosition(currentState
.cursorY
, j
);
3903 * CHT - Advance X tab stops.
3905 private void cht() {
3906 int n
= getCsiParam(0, 1);
3907 for (int i
= 0; i
< n
; i
++) {
3908 advanceToNextTabStop();
3913 * SGR - Select graphics rendition.
3915 private void sgr() {
3917 if (csiParams
.size() == 0) {
3918 currentState
.attr
.reset();
3922 int sgrColorMode
= -1;
3923 boolean idx88Color
= false;
3924 boolean rgbColor
= false;
3928 for (Integer i
: csiParams
) {
3930 if ((sgrColorMode
== 38) || (sgrColorMode
== 48)) {
3932 assert (type
== DeviceType
.XTERM
);
3936 * Indexed color mode, we now have the index number.
3938 if (sgrColorMode
== 38) {
3939 currentState
.attr
.setForeColorRGB(get88Color(i
));
3941 assert (sgrColorMode
== 48);
3942 currentState
.attr
.setBackColorRGB(get88Color(i
));
3951 * RGB color mode, we are collecting tokens.
3955 } else if (rgbGreen
== -1) {
3956 rgbGreen
= i
& 0xFF;
3958 int rgb
= rgbRed
<< 16;
3959 rgb
|= rgbGreen
<< 8;
3962 // System.err.printf("RGB: %08x\n", rgb);
3964 if (sgrColorMode
== 38) {
3965 currentState
.attr
.setForeColorRGB(rgb
);
3967 assert (sgrColorMode
== 48);
3968 currentState
.attr
.setBackColorRGB(rgb
);
3989 * Indexed color mode.
3996 * This is neither indexed nor RGB color. Bail out.
4001 } // if ((sgrColorMode == 38) || (sgrColorMode == 48))
4007 currentState
.attr
.reset();
4012 currentState
.attr
.setBold(true);
4017 currentState
.attr
.setUnderline(true);
4022 currentState
.attr
.setBlink(true);
4027 currentState
.attr
.setReverse(true);
4034 if (type
== DeviceType
.XTERM
) {
4044 // Set black foreground
4045 currentState
.attr
.setForeColorRGB(get88Color(8));
4048 // Set red foreground
4049 currentState
.attr
.setForeColorRGB(get88Color(9));
4052 // Set green foreground
4053 currentState
.attr
.setForeColorRGB(get88Color(10));
4056 // Set yellow foreground
4057 currentState
.attr
.setForeColorRGB(get88Color(11));
4060 // Set blue foreground
4061 currentState
.attr
.setForeColorRGB(get88Color(12));
4064 // Set magenta foreground
4065 currentState
.attr
.setForeColorRGB(get88Color(13));
4068 // Set cyan foreground
4069 currentState
.attr
.setForeColorRGB(get88Color(14));
4072 // Set white foreground
4073 currentState
.attr
.setForeColorRGB(get88Color(15));
4077 // Set black background
4078 currentState
.attr
.setBackColorRGB(get88Color(8));
4081 // Set red background
4082 currentState
.attr
.setBackColorRGB(get88Color(9));
4085 // Set green background
4086 currentState
.attr
.setBackColorRGB(get88Color(10));
4089 // Set yellow background
4090 currentState
.attr
.setBackColorRGB(get88Color(11));
4093 // Set blue background
4094 currentState
.attr
.setBackColorRGB(get88Color(12));
4097 // Set magenta background
4098 currentState
.attr
.setBackColorRGB(get88Color(13));
4101 // Set cyan background
4102 currentState
.attr
.setBackColorRGB(get88Color(14));
4105 // Set white background
4106 currentState
.attr
.setBackColorRGB(get88Color(15));
4114 if ((type
== DeviceType
.VT220
)
4115 || (type
== DeviceType
.XTERM
)) {
4121 currentState
.attr
.setBold(false);
4126 currentState
.attr
.setUnderline(false);
4131 currentState
.attr
.setBlink(false);
4136 currentState
.attr
.setReverse(false);
4144 // A true VT100/102/220 does not support color, however everyone
4145 // is used to their terminal emulator supporting color so we will
4146 // unconditionally support color for all DeviceType's.
4151 // Set black foreground
4152 currentState
.attr
.setForeColor(Color
.BLACK
);
4153 currentState
.attr
.setForeColorRGB(-1);
4156 // Set red foreground
4157 currentState
.attr
.setForeColor(Color
.RED
);
4158 currentState
.attr
.setForeColorRGB(-1);
4161 // Set green foreground
4162 currentState
.attr
.setForeColor(Color
.GREEN
);
4163 currentState
.attr
.setForeColorRGB(-1);
4166 // Set yellow foreground
4167 currentState
.attr
.setForeColor(Color
.YELLOW
);
4168 currentState
.attr
.setForeColorRGB(-1);
4171 // Set blue foreground
4172 currentState
.attr
.setForeColor(Color
.BLUE
);
4173 currentState
.attr
.setForeColorRGB(-1);
4176 // Set magenta foreground
4177 currentState
.attr
.setForeColor(Color
.MAGENTA
);
4178 currentState
.attr
.setForeColorRGB(-1);
4181 // Set cyan foreground
4182 currentState
.attr
.setForeColor(Color
.CYAN
);
4183 currentState
.attr
.setForeColorRGB(-1);
4186 // Set white foreground
4187 currentState
.attr
.setForeColor(Color
.WHITE
);
4188 currentState
.attr
.setForeColorRGB(-1);
4191 if (type
== DeviceType
.XTERM
) {
4193 * Xterm supports T.416 / ISO-8613-3 codes to select
4194 * either an indexed color or an RGB value. (It also
4195 * permits these ISO-8613-3 SGR sequences to be separated
4196 * by colons rather than semicolons.)
4198 * We will support only the following:
4200 * 1. Indexed color mode (88- or 256-color modes).
4204 * These cover most of the use cases in the real world.
4206 * HOWEVER, note that this is an awful broken "standard",
4207 * with no way to do it "right". See
4208 * http://invisible-island.net/ncurses/ncurses.faq.html#xterm_16MegaColors
4209 * for a detailed discussion of the current state of RGB
4210 * in various terminals, the point of which is that none
4211 * of them really do the same thing despite all appearing
4215 * https://bugs.kde.org/show_bug.cgi?id=107487#c3 .
4216 * where it is assumed that supporting just the "indexed
4217 * mode" of these sequences (which could align easily
4218 * with existing SGR colors) is assumed to mean full
4219 * support of 24-bit RGB. So it is all or nothing.
4221 * Finally, these sequences break the assumptions of
4222 * standard ECMA-48 style parsers as pointed out at
4223 * https://bugs.kde.org/show_bug.cgi?id=107487#c11 .
4224 * Therefore in order to keep a clean display, we cannot
4225 * parse anything else in this sequence.
4230 // Underscore on, default foreground color
4231 currentState
.attr
.setUnderline(true);
4232 currentState
.attr
.setForeColor(Color
.WHITE
);
4236 // Underscore off, default foreground color
4237 currentState
.attr
.setUnderline(false);
4238 currentState
.attr
.setForeColor(Color
.WHITE
);
4239 currentState
.attr
.setForeColorRGB(-1);
4242 // Set black background
4243 currentState
.attr
.setBackColor(Color
.BLACK
);
4244 currentState
.attr
.setBackColorRGB(-1);
4247 // Set red background
4248 currentState
.attr
.setBackColor(Color
.RED
);
4249 currentState
.attr
.setBackColorRGB(-1);
4252 // Set green background
4253 currentState
.attr
.setBackColor(Color
.GREEN
);
4254 currentState
.attr
.setBackColorRGB(-1);
4257 // Set yellow background
4258 currentState
.attr
.setBackColor(Color
.YELLOW
);
4259 currentState
.attr
.setBackColorRGB(-1);
4262 // Set blue background
4263 currentState
.attr
.setBackColor(Color
.BLUE
);
4264 currentState
.attr
.setBackColorRGB(-1);
4267 // Set magenta background
4268 currentState
.attr
.setBackColor(Color
.MAGENTA
);
4269 currentState
.attr
.setBackColorRGB(-1);
4272 // Set cyan background
4273 currentState
.attr
.setBackColor(Color
.CYAN
);
4274 currentState
.attr
.setBackColorRGB(-1);
4277 // Set white background
4278 currentState
.attr
.setBackColor(Color
.WHITE
);
4279 currentState
.attr
.setBackColorRGB(-1);
4282 if (type
== DeviceType
.XTERM
) {
4284 * Xterm supports T.416 / ISO-8613-3 codes to select
4285 * either an indexed color or an RGB value. (It also
4286 * permits these ISO-8613-3 SGR sequences to be separated
4287 * by colons rather than semicolons.)
4289 * We will support only the following:
4291 * 1. Indexed color mode (88- or 256-color modes).
4295 * These cover most of the use cases in the real world.
4297 * HOWEVER, note that this is an awful broken "standard",
4298 * with no way to do it "right". See
4299 * http://invisible-island.net/ncurses/ncurses.faq.html#xterm_16MegaColors
4300 * for a detailed discussion of the current state of RGB
4301 * in various terminals, the point of which is that none
4302 * of them really do the same thing despite all appearing
4306 * https://bugs.kde.org/show_bug.cgi?id=107487#c3 .
4307 * where it is assumed that supporting just the "indexed
4308 * mode" of these sequences (which could align easily
4309 * with existing SGR colors) is assumed to mean full
4310 * support of 24-bit RGB. So it is all or nothing.
4312 * Finally, these sequences break the assumptions of
4313 * standard ECMA-48 style parsers as pointed out at
4314 * https://bugs.kde.org/show_bug.cgi?id=107487#c11 .
4315 * Therefore in order to keep a clean display, we cannot
4316 * parse anything else in this sequence.
4323 // Default background
4324 currentState
.attr
.setBackColor(Color
.BLACK
);
4325 currentState
.attr
.setBackColorRGB(-1);
4335 * DA - Device attributes.
4338 int extendedFlag
= 0;
4340 if (collectBuffer
.length() > 0) {
4341 String args
= collectBuffer
.substring(1);
4342 if (collectBuffer
.charAt(0) == '>') {
4344 if (collectBuffer
.length() >= 2) {
4345 i
= Integer
.parseInt(args
);
4347 } else if (collectBuffer
.charAt(0) == '=') {
4349 if (collectBuffer
.length() >= 2) {
4350 i
= Integer
.parseInt(args
);
4353 // Unknown code, bail out
4358 if ((i
!= 0) && (i
!= 1)) {
4362 if ((extendedFlag
== 0) && (i
== 0)) {
4363 // Send string directly to remote side
4364 writeRemote(deviceTypeResponse());
4368 if ((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
)) {
4370 if ((extendedFlag
== 1) && (i
== 0)) {
4372 * Request "What type of terminal are you, what is your
4373 * firmware version, and what hardware options do you have
4376 * Respond: "I am a VT220 (identification code of 1), my
4377 * firmware version is _____ (Pv), and I have _____ Po
4378 * options installed."
4384 if (s8c1t
== true) {
4385 writeRemote("\u009b>1;10;0c");
4387 writeRemote("\033[>1;10;0c");
4393 if ((extendedFlag
== 2) && (i
== 0)) {
4396 * Request "What is your unit ID?"
4398 * Respond: "I was manufactured at site 00 and have a unique ID
4402 writeRemote("\033P!|00010203\033\\");
4407 * DECSTBM - Set top and bottom margins.
4409 private void decstbm() {
4410 boolean decPrivateModeFlag
= false;
4412 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4413 if (collectBuffer
.charAt(i
) == '?') {
4414 decPrivateModeFlag
= true;
4418 if (decPrivateModeFlag
) {
4419 // This could be restore DEC private mode values.
4423 int top
= getCsiParam(0, 1, 1, height
) - 1;
4424 int bottom
= getCsiParam(1, height
, 1, height
) - 1;
4425 if (bottom
> height
- 1) {
4426 bottom
= height
- 1;
4432 scrollRegionTop
= top
;
4433 scrollRegionBottom
= bottom
;
4436 cursorPosition(0, 0);
4441 * DECREQTPARM - Request terminal parameters.
4443 private void decreqtparm() {
4444 int i
= getCsiParam(0, 0);
4446 if ((i
!= 0) && (i
!= 1)) {
4453 * Request terminal parameters.
4457 * Parity NONE, 8 bits, xmitspeed 38400, recvspeed 38400.
4458 * (CLoCk MULtiplier = 1, STP option flags = 0)
4462 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4465 str
= String
.format("\u009b%d;1;1;128;128;1;0x", i
+ 2);
4467 str
= String
.format("\033[%d;1;1;128;128;1;0x", i
+ 2);
4473 * DECSCA - Select Character Attributes.
4475 private void decsca() {
4476 int i
= getCsiParam(0, 0);
4478 if ((i
== 0) || (i
== 2)) {
4480 currentState
.attr
.setProtect(false);
4484 currentState
.attr
.setProtect(true);
4489 * DECSTR - Soft Terminal Reset.
4491 private void decstr() {
4492 // Do exactly like RIS - Reset to initial state
4494 // Do I clear screen too? I think so...
4495 eraseScreen(0, 0, height
- 1, width
- 1, false);
4496 cursorPosition(0, 0);
4500 * DSR - Device status report.
4502 private void dsr() {
4503 boolean decPrivateModeFlag
= false;
4504 int row
= currentState
.cursorY
;
4506 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4507 if (collectBuffer
.charAt(i
) == '?') {
4508 decPrivateModeFlag
= true;
4513 int i
= getCsiParam(0, 0);
4518 // Request status report. Respond with "OK, no malfunction."
4520 // Send string directly to remote side
4521 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4524 writeRemote("\u009b0n");
4526 writeRemote("\033[0n");
4531 // Request cursor position. Respond with current position.
4532 if (currentState
.originMode
== true) {
4533 row
-= scrollRegionTop
;
4536 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4539 str
= String
.format("\u009b%d;%dR", row
+ 1,
4540 currentState
.cursorX
+ 1);
4542 str
= String
.format("\033[%d;%dR", row
+ 1,
4543 currentState
.cursorX
+ 1);
4546 // Send string directly to remote side
4551 if (decPrivateModeFlag
== true) {
4553 // Request printer status report. Respond with "Printer not
4556 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4557 && (s8c1t
== true)) {
4558 writeRemote("\u009b?13n");
4560 writeRemote("\033[?13n");
4566 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4567 && (decPrivateModeFlag
== true)
4570 // Request user-defined keys are locked or unlocked. Respond
4571 // with "User-defined keys are locked."
4573 if (s8c1t
== true) {
4574 writeRemote("\u009b?21n");
4576 writeRemote("\033[?21n");
4582 if (((type
== DeviceType
.VT220
) || (type
== DeviceType
.XTERM
))
4583 && (decPrivateModeFlag
== true)
4586 // Request keyboard language. Respond with "Keyboard
4587 // language is North American."
4589 if (s8c1t
== true) {
4590 writeRemote("\u009b?27;1n");
4592 writeRemote("\033[?27;1n");
4599 // Some other option, ignore
4605 * TBC - Tabulation clear.
4607 private void tbc() {
4608 int i
= getCsiParam(0, 0);
4610 List
<Integer
> newStops
= new ArrayList
<Integer
>();
4611 for (Integer stop
: tabStops
) {
4612 if (stop
== currentState
.cursorX
) {
4617 tabStops
= newStops
;
4625 * Erase the characters in the current line from the start column to the
4626 * end column, inclusive.
4628 * @param start starting column to erase (between 0 and width - 1)
4629 * @param end ending column to erase (between 0 and width - 1)
4630 * @param honorProtected if true, do not erase characters with the
4631 * protected attribute set
4633 private void eraseLine(int start
, int end
, final boolean honorProtected
) {
4638 if (end
> width
- 1) {
4645 for (int i
= start
; i
<= end
; i
++) {
4646 DisplayLine line
= display
.get(currentState
.cursorY
);
4647 if ((!honorProtected
)
4648 || ((honorProtected
) && (!line
.charAt(i
).isProtect()))) {
4655 * From the VT102 manual:
4657 * Erasing a character also erases any character
4658 * attribute of the character.
4664 * Erase with the current color a.k.a. back-color erase
4667 line
.setChar(i
, ' ');
4668 line
.setAttr(i
, currentState
.attr
);
4676 * Erase a rectangular section of the screen, inclusive. end column,
4679 * @param startRow starting row to erase (between 0 and height - 1)
4680 * @param startCol starting column to erase (between 0 and width - 1)
4681 * @param endRow ending row to erase (between 0 and height - 1)
4682 * @param endCol ending column to erase (between 0 and width - 1)
4683 * @param honorProtected if true, do not erase characters with the
4684 * protected attribute set
4686 private void eraseScreen(final int startRow
, final int startCol
,
4687 final int endRow
, final int endCol
, final boolean honorProtected
) {
4695 || (endRow
< startRow
)
4696 || (endCol
< startCol
)
4701 oldCursorY
= currentState
.cursorY
;
4702 for (int i
= startRow
; i
<= endRow
; i
++) {
4703 currentState
.cursorY
= i
;
4704 eraseLine(startCol
, endCol
, honorProtected
);
4706 // Erase display clears the double attributes
4707 display
.get(i
).setDoubleWidth(false);
4708 display
.get(i
).setDoubleHeight(0);
4710 currentState
.cursorY
= oldCursorY
;
4714 * VT220 printer functions. All of these are parsed, but won't do
4717 private void printerFunctions() {
4718 boolean decPrivateModeFlag
= false;
4719 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4720 if (collectBuffer
.charAt(i
) == '?') {
4721 decPrivateModeFlag
= true;
4726 int i
= getCsiParam(0, 0);
4731 if (decPrivateModeFlag
== false) {
4737 if (decPrivateModeFlag
== true) {
4738 // Print cursor line
4743 if (decPrivateModeFlag
== true) {
4744 // Auto print mode OFF
4746 // Printer controller OFF
4748 // Characters re-appear on the screen
4749 printerControllerMode
= false;
4754 if (decPrivateModeFlag
== true) {
4758 // Printer controller
4760 // Characters get sucked into oblivion
4761 printerControllerMode
= true;
4772 * Handle the SCAN_OSC_STRING state. Handle this in VT100 because lots
4773 * of remote systems will send an XTerm title sequence even if TERM isn't
4776 * @param xtermChar the character received from the remote side
4778 private void oscPut(final char xtermChar
) {
4779 // System.err.println("oscPut: " + xtermChar);
4781 boolean oscEnd
= false;
4783 if (xtermChar
== 0x07) {
4786 if ((xtermChar
== '\\')
4787 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\033')
4793 collectBuffer
.append(xtermChar
);
4798 if (xtermChar
== 0x07) {
4799 args
= collectBuffer
.substring(0, collectBuffer
.length() - 1);
4801 args
= collectBuffer
.substring(0, collectBuffer
.length() - 2);
4804 String
[] p
= args
.split(";");
4806 if ((p
[0].equals("0")) || (p
[0].equals("2"))) {
4813 if (p
[0].equals("4")) {
4814 for (int i
= 1; i
+ 1 < p
.length
; i
+= 2) {
4815 // Set a color index value
4817 set88Color(Integer
.parseInt(p
[i
]), p
[i
+ 1]);
4818 } catch (NumberFormatException e
) {
4824 if (p
[0].equals("10")) {
4825 if (p
[1].equals("?")) {
4826 // Respond with foreground color.
4827 java
.awt
.Color color
= jexer
.backend
.SwingTerminal
.attrToForegroundColor(currentState
.attr
);
4829 writeRemote(String
.format(
4830 "\033]10;rgb:%04x/%04x/%04x\033\\",
4831 color
.getRed() << 8,
4832 color
.getGreen() << 8,
4833 color
.getBlue() << 8));
4837 if (p
[0].equals("11")) {
4838 if (p
[1].equals("?")) {
4839 // Respond with background color.
4840 java
.awt
.Color color
= jexer
.backend
.SwingTerminal
.attrToBackgroundColor(currentState
.attr
);
4842 writeRemote(String
.format(
4843 "\033]11;rgb:%04x/%04x/%04x\033\\",
4844 color
.getRed() << 8,
4845 color
.getGreen() << 8,
4846 color
.getBlue() << 8));
4850 if (p
[0].equals("444")) {
4851 if (p
[1].equals("0") && (p
.length
== 6)) {
4852 // Jexer image - RGB
4853 parseJexerImageRGB(p
[2], p
[3], p
[4], p
[5]);
4854 } else if (p
[1].equals("1") && (p
.length
== 4)) {
4855 // Jexer image - PNG
4856 parseJexerImageFile(1, p
[2], p
[3]);
4857 } else if (p
[1].equals("2") && (p
.length
== 4)) {
4858 // Jexer image - JPG
4859 parseJexerImageFile(2, p
[2], p
[3]);
4864 // Go to SCAN_GROUND state
4871 * Handle the SCAN_SOSPMAPC_STRING state. This is currently only used by
4872 * Jexer ECMA48Terminal to talk to ECMA48.
4874 * @param pmChar the character received from the remote side
4876 private void pmPut(final char pmChar
) {
4877 // System.err.println("pmPut: " + pmChar);
4879 boolean pmEnd
= false;
4881 if ((pmChar
== '\\')
4882 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\033')
4888 collectBuffer
.append(pmChar
);
4893 arg
= collectBuffer
.substring(0, collectBuffer
.length() - 2);
4895 // System.err.println("arg: '" + arg + "'");
4897 if (arg
.equals("hideMousePointer")) {
4898 hideMousePointer
= true;
4900 if (arg
.equals("showMousePointer")) {
4901 hideMousePointer
= false;
4904 // Go to SCAN_GROUND state
4911 * Perform xterm window operations.
4913 private void xtermWindowOps() {
4914 boolean xtermPrivateModeFlag
= false;
4916 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
4917 if (collectBuffer
.charAt(i
) == '?') {
4918 xtermPrivateModeFlag
= true;
4923 int i
= getCsiParam(0, 0);
4925 if (!xtermPrivateModeFlag
) {
4928 // Report xterm text area size in pixels as CSI 4 ; height ;
4930 writeRemote(String
.format("\033[4;%d;%dt", textHeight
* height
,
4931 textWidth
* width
));
4934 // Report character size in pixels as CSI 6 ; height ; width
4936 writeRemote(String
.format("\033[6;%d;%dt", textHeight
,
4940 // Report the text are size in characters as CSI 8 ; height ;
4942 writeRemote(String
.format("\033[8;%d;%dt", height
, width
));
4951 * Respond to xterm sixel query.
4953 private void xtermSixelQuery() {
4954 int item
= getCsiParam(0, 0);
4955 int action
= getCsiParam(1, 0);
4956 int value
= getCsiParam(2, 0);
4961 // Report number of color registers.
4962 writeRemote(String
.format("\033[?%d;%d;%dS", item
, 0, 1024));
4969 // We will not support this option.
4970 writeRemote(String
.format("\033[?%d;%dS", item
, action
));
4974 * Run this input character through the ECMA48 state machine.
4976 * @param ch character from the remote side
4978 private void consume(final int ch
) {
4981 // System.err.printf("%c STATE = %s\n", ch, scanState);
4983 // Special "anywhere" states
4985 // 18, 1A --> execute, then switch to SCAN_GROUND
4986 if ((ch
== 0x18) || (ch
== 0x1A)) {
4987 // CAN and SUB abort escape sequences
4992 // 80-8F, 91-97, 99, 9A, 9C --> execute, then switch to SCAN_GROUND
4996 if ((type
== DeviceType
.XTERM
)
4997 && ((scanState
== ScanState
.OSC_STRING
)
4998 || (scanState
== ScanState
.DCS_SIXEL
)
4999 || (scanState
== ScanState
.SOSPMAPC_STRING
))
5001 // Xterm can pass ESCAPE to its OSC sequence.
5002 // Xterm can pass ESCAPE to its DCS sequence.
5003 // Jexer can pass ESCAPE to its PM sequence.
5004 } else if ((scanState
!= ScanState
.DCS_ENTRY
)
5005 && (scanState
!= ScanState
.DCS_INTERMEDIATE
)
5006 && (scanState
!= ScanState
.DCS_IGNORE
)
5007 && (scanState
!= ScanState
.DCS_PARAM
)
5008 && (scanState
!= ScanState
.DCS_PASSTHROUGH
)
5010 scanState
= ScanState
.ESCAPE
;
5015 // 0x9B == CSI 8-bit sequence
5017 scanState
= ScanState
.CSI_ENTRY
;
5021 // 0x9D goes to ScanState.OSC_STRING
5023 scanState
= ScanState
.OSC_STRING
;
5027 // 0x90 goes to DCS_ENTRY
5029 scanState
= ScanState
.DCS_ENTRY
;
5033 // 0x98, 0x9E, and 0x9F go to SOSPMAPC_STRING
5034 if ((ch
== 0x98) || (ch
== 0x9E) || (ch
== 0x9F)) {
5035 scanState
= ScanState
.SOSPMAPC_STRING
;
5039 // 0x7F (DEL) is always discarded
5044 switch (scanState
) {
5047 // 00-17, 19, 1C-1F --> execute
5048 // 80-8F, 91-9A, 9C --> execute
5049 if ((ch
<= 0x1F) || ((ch
>= 0x80) && (ch
<= 0x9F))) {
5050 handleControlChar((char) ch
);
5054 if (((ch
>= 0x20) && (ch
<= 0x7F))
5058 // VT220 printer --> trash bin
5059 if (((type
== DeviceType
.VT220
)
5060 || (type
== DeviceType
.XTERM
))
5061 && (printerControllerMode
== true)
5066 // Hang onto this character
5067 repCh
= mapCharacter(ch
);
5069 // Print this character
5070 printCharacter(repCh
);
5075 // 00-17, 19, 1C-1F --> execute
5077 handleControlChar((char) ch
);
5081 // 20-2F --> collect, then switch to ESCAPE_INTERMEDIATE
5082 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5084 scanState
= ScanState
.ESCAPE_INTERMEDIATE
;
5088 // 30-4F, 51-57, 59, 5A, 5C, 60-7E --> dispatch, then switch to GROUND
5089 if ((ch
>= 0x30) && (ch
<= 0x4F)) {
5100 // DECSC - Save cursor
5101 // Note this code overlaps both ANSI and VT52 mode
5106 // DECRC - Restore cursor
5107 // Note this code overlaps both ANSI and VT52 mode
5116 if (vt52Mode
== true) {
5117 // DECANM - Enter ANSI mode
5119 arrowKeyMode
= ArrowKeyMode
.VT100
;
5122 * From the VT102 docs: "You use ANSI mode to select
5123 * most terminal features; the terminal uses the same
5124 * features when it switches to VT52 mode. You
5125 * cannot, however, change most of these features in
5128 * In other words, do not reset any other attributes
5129 * when switching between VT52 submode and ANSI.
5133 currentState
.g0Charset
= CharacterSet
.US
;
5134 currentState
.g1Charset
= CharacterSet
.DRAWING
;
5136 singleshift
= Singleshift
.NONE
;
5137 currentState
.glLockshift
= LockshiftMode
.NONE
;
5138 currentState
.grLockshift
= LockshiftMode
.NONE
;
5142 // DECKPAM - Keypad application mode
5143 // Note this code overlaps both ANSI and VT52 mode
5147 // DECKPNM - Keypad numeric mode
5148 // Note this code overlaps both ANSI and VT52 mode
5155 if (vt52Mode
== true) {
5156 // Cursor up, and stop at the top without scrolling
5161 if (vt52Mode
== true) {
5162 // Cursor down, and stop at the bottom without scrolling
5163 cursorDown(1, false);
5167 if (vt52Mode
== true) {
5168 // Cursor right, and stop at the right without scrolling
5169 cursorRight(1, false);
5173 if (vt52Mode
== true) {
5174 // Cursor left, and stop at the left without scrolling
5175 cursorLeft(1, false);
5182 if (vt52Mode
== true) {
5190 if (vt52Mode
== true) {
5191 // G0 --> Special graphics
5192 currentState
.g0Charset
= CharacterSet
.VT52_GRAPHICS
;
5196 if (vt52Mode
== true) {
5198 currentState
.g0Charset
= CharacterSet
.US
;
5202 if (vt52Mode
== true) {
5204 cursorPosition(0, 0);
5206 // HTS - Horizontal tabulation set
5211 if (vt52Mode
== true) {
5212 // Reverse line feed. Same as RI.
5217 if (vt52Mode
== true) {
5218 // Erase to end of screen
5219 eraseLine(currentState
.cursorX
, width
- 1, false);
5220 eraseScreen(currentState
.cursorY
+ 1, 0, height
- 1,
5225 if (vt52Mode
== true) {
5226 // Erase to end of line
5227 eraseLine(currentState
.cursorX
, width
- 1, false);
5233 if (vt52Mode
== true) {
5236 // RI - Reverse index
5241 if (vt52Mode
== false) {
5243 singleshift
= Singleshift
.SS2
;
5247 if (vt52Mode
== false) {
5249 singleshift
= Singleshift
.SS3
;
5256 if ((ch
>= 0x51) && (ch
<= 0x57)) {
5272 if (vt52Mode
== true) {
5273 scanState
= ScanState
.VT52_DIRECT_CURSOR_ADDRESS
;
5281 if (vt52Mode
== true) {
5283 // Send string directly to remote side
5284 writeRemote("\033/Z");
5287 // Send string directly to remote side
5288 writeRemote(deviceTypeResponse());
5299 // VT52 cannot get to any of these other states
5300 if (vt52Mode
== true) {
5305 if ((ch
>= 0x60) && (ch
<= 0x7E)) {
5312 // RIS - Reset to initial state
5314 // Do I clear screen too? I think so...
5315 eraseScreen(0, 0, height
- 1, width
- 1, false);
5316 cursorPosition(0, 0);
5330 if ((type
== DeviceType
.VT220
)
5331 || (type
== DeviceType
.XTERM
)) {
5333 // VT220 lockshift G2 into GL
5334 currentState
.glLockshift
= LockshiftMode
.G2_GL
;
5339 if ((type
== DeviceType
.VT220
)
5340 || (type
== DeviceType
.XTERM
)) {
5342 // VT220 lockshift G3 into GL
5343 currentState
.glLockshift
= LockshiftMode
.G3_GL
;
5361 if ((type
== DeviceType
.VT220
)
5362 || (type
== DeviceType
.XTERM
)) {
5364 // VT220 lockshift G3 into GR
5365 currentState
.grLockshift
= LockshiftMode
.G3_GR
;
5370 if ((type
== DeviceType
.VT220
)
5371 || (type
== DeviceType
.XTERM
)) {
5373 // VT220 lockshift G2 into GR
5374 currentState
.grLockshift
= LockshiftMode
.G2_GR
;
5380 if ((type
== DeviceType
.VT220
)
5381 || (type
== DeviceType
.XTERM
)) {
5383 // VT220 lockshift G1 into GR
5384 currentState
.grLockshift
= LockshiftMode
.G1_GR
;
5394 // 0x5B goes to CSI_ENTRY
5396 scanState
= ScanState
.CSI_ENTRY
;
5399 // 0x5D goes to OSC_STRING
5401 scanState
= ScanState
.OSC_STRING
;
5404 // 0x50 goes to DCS_ENTRY
5406 scanState
= ScanState
.DCS_ENTRY
;
5409 // 0x58, 0x5E, and 0x5F go to SOSPMAPC_STRING
5410 if ((ch
== 0x58) || (ch
== 0x5E) || (ch
== 0x5F)) {
5411 scanState
= ScanState
.SOSPMAPC_STRING
;
5416 case ESCAPE_INTERMEDIATE
:
5417 // 00-17, 19, 1C-1F --> execute
5419 handleControlChar((char) ch
);
5422 // 20-2F --> collect
5423 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
5427 // 30-7E --> dispatch, then switch to GROUND
5428 if ((ch
>= 0x30) && (ch
<= 0x7E)) {
5431 if ((collectBuffer
.length() == 1)
5432 && (collectBuffer
.charAt(0) == '(')) {
5433 // G0 --> Special graphics
5434 currentState
.g0Charset
= CharacterSet
.DRAWING
;
5436 if ((collectBuffer
.length() == 1)
5437 && (collectBuffer
.charAt(0) == ')')) {
5438 // G1 --> Special graphics
5439 currentState
.g1Charset
= CharacterSet
.DRAWING
;
5441 if ((type
== DeviceType
.VT220
)
5442 || (type
== DeviceType
.XTERM
)) {
5444 if ((collectBuffer
.length() == 1)
5445 && (collectBuffer
.charAt(0) == '*')) {
5446 // G2 --> Special graphics
5447 currentState
.g2Charset
= CharacterSet
.DRAWING
;
5449 if ((collectBuffer
.length() == 1)
5450 && (collectBuffer
.charAt(0) == '+')) {
5451 // G3 --> Special graphics
5452 currentState
.g3Charset
= CharacterSet
.DRAWING
;
5457 if ((collectBuffer
.length() == 1)
5458 && (collectBuffer
.charAt(0) == '(')) {
5459 // G0 --> Alternate character ROM standard character set
5460 currentState
.g0Charset
= CharacterSet
.ROM
;
5462 if ((collectBuffer
.length() == 1)
5463 && (collectBuffer
.charAt(0) == ')')) {
5464 // G1 --> Alternate character ROM standard character set
5465 currentState
.g1Charset
= CharacterSet
.ROM
;
5469 if ((collectBuffer
.length() == 1)
5470 && (collectBuffer
.charAt(0) == '(')) {
5471 // G0 --> Alternate character ROM special graphics
5472 currentState
.g0Charset
= CharacterSet
.ROM_SPECIAL
;
5474 if ((collectBuffer
.length() == 1)
5475 && (collectBuffer
.charAt(0) == ')')) {
5476 // G1 --> Alternate character ROM special graphics
5477 currentState
.g1Charset
= CharacterSet
.ROM_SPECIAL
;
5481 if ((collectBuffer
.length() == 1)
5482 && (collectBuffer
.charAt(0) == '#')) {
5483 // DECDHL - Double-height line (top half)
5488 if ((collectBuffer
.length() == 1)
5489 && (collectBuffer
.charAt(0) == '#')) {
5490 // DECDHL - Double-height line (bottom half)
5493 if ((type
== DeviceType
.VT220
)
5494 || (type
== DeviceType
.XTERM
)) {
5496 if ((collectBuffer
.length() == 1)
5497 && (collectBuffer
.charAt(0) == '(')) {
5499 currentState
.g0Charset
= CharacterSet
.NRC_DUTCH
;
5501 if ((collectBuffer
.length() == 1)
5502 && (collectBuffer
.charAt(0) == ')')) {
5504 currentState
.g1Charset
= CharacterSet
.NRC_DUTCH
;
5506 if ((collectBuffer
.length() == 1)
5507 && (collectBuffer
.charAt(0) == '*')) {
5509 currentState
.g2Charset
= CharacterSet
.NRC_DUTCH
;
5511 if ((collectBuffer
.length() == 1)
5512 && (collectBuffer
.charAt(0) == '+')) {
5514 currentState
.g3Charset
= CharacterSet
.NRC_DUTCH
;
5519 if ((collectBuffer
.length() == 1)
5520 && (collectBuffer
.charAt(0) == '#')) {
5521 // DECSWL - Single-width line
5524 if ((type
== DeviceType
.VT220
)
5525 || (type
== DeviceType
.XTERM
)) {
5527 if ((collectBuffer
.length() == 1)
5528 && (collectBuffer
.charAt(0) == '(')) {
5530 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
5532 if ((collectBuffer
.length() == 1)
5533 && (collectBuffer
.charAt(0) == ')')) {
5535 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
5537 if ((collectBuffer
.length() == 1)
5538 && (collectBuffer
.charAt(0) == '*')) {
5540 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
5542 if ((collectBuffer
.length() == 1)
5543 && (collectBuffer
.charAt(0) == '+')) {
5545 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
5550 if ((collectBuffer
.length() == 1)
5551 && (collectBuffer
.charAt(0) == '#')) {
5552 // DECDWL - Double-width line
5555 if ((type
== DeviceType
.VT220
)
5556 || (type
== DeviceType
.XTERM
)) {
5558 if ((collectBuffer
.length() == 1)
5559 && (collectBuffer
.charAt(0) == '(')) {
5561 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
5563 if ((collectBuffer
.length() == 1)
5564 && (collectBuffer
.charAt(0) == ')')) {
5566 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
5568 if ((collectBuffer
.length() == 1)
5569 && (collectBuffer
.charAt(0) == '*')) {
5571 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
5573 if ((collectBuffer
.length() == 1)
5574 && (collectBuffer
.charAt(0) == '+')) {
5576 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
5581 if ((type
== DeviceType
.VT220
)
5582 || (type
== DeviceType
.XTERM
)) {
5584 if ((collectBuffer
.length() == 1)
5585 && (collectBuffer
.charAt(0) == '(')) {
5587 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
5589 if ((collectBuffer
.length() == 1)
5590 && (collectBuffer
.charAt(0) == ')')) {
5592 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
5594 if ((collectBuffer
.length() == 1)
5595 && (collectBuffer
.charAt(0) == '*')) {
5597 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
5599 if ((collectBuffer
.length() == 1)
5600 && (collectBuffer
.charAt(0) == '+')) {
5602 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
5607 if ((collectBuffer
.length() == 1)
5608 && (collectBuffer
.charAt(0) == '#')) {
5609 // DECALN - Screen alignment display
5618 if ((type
== DeviceType
.VT220
)
5619 || (type
== DeviceType
.XTERM
)) {
5621 if ((collectBuffer
.length() == 1)
5622 && (collectBuffer
.charAt(0) == '(')) {
5623 // G0 --> DEC_SUPPLEMENTAL
5624 currentState
.g0Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5626 if ((collectBuffer
.length() == 1)
5627 && (collectBuffer
.charAt(0) == ')')) {
5628 // G1 --> DEC_SUPPLEMENTAL
5629 currentState
.g1Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5631 if ((collectBuffer
.length() == 1)
5632 && (collectBuffer
.charAt(0) == '*')) {
5633 // G2 --> DEC_SUPPLEMENTAL
5634 currentState
.g2Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5636 if ((collectBuffer
.length() == 1)
5637 && (collectBuffer
.charAt(0) == '+')) {
5638 // G3 --> DEC_SUPPLEMENTAL
5639 currentState
.g3Charset
= CharacterSet
.DEC_SUPPLEMENTAL
;
5644 if ((type
== DeviceType
.VT220
)
5645 || (type
== DeviceType
.XTERM
)) {
5647 if ((collectBuffer
.length() == 1)
5648 && (collectBuffer
.charAt(0) == '(')) {
5650 currentState
.g0Charset
= CharacterSet
.NRC_SWISS
;
5652 if ((collectBuffer
.length() == 1)
5653 && (collectBuffer
.charAt(0) == ')')) {
5655 currentState
.g1Charset
= CharacterSet
.NRC_SWISS
;
5657 if ((collectBuffer
.length() == 1)
5658 && (collectBuffer
.charAt(0) == '*')) {
5660 currentState
.g2Charset
= CharacterSet
.NRC_SWISS
;
5662 if ((collectBuffer
.length() == 1)
5663 && (collectBuffer
.charAt(0) == '+')) {
5665 currentState
.g3Charset
= CharacterSet
.NRC_SWISS
;
5674 if ((collectBuffer
.length() == 1)
5675 && (collectBuffer
.charAt(0) == '(')) {
5676 // G0 --> United Kingdom set
5677 currentState
.g0Charset
= CharacterSet
.UK
;
5679 if ((collectBuffer
.length() == 1)
5680 && (collectBuffer
.charAt(0) == ')')) {
5681 // G1 --> United Kingdom set
5682 currentState
.g1Charset
= CharacterSet
.UK
;
5684 if ((type
== DeviceType
.VT220
)
5685 || (type
== DeviceType
.XTERM
)) {
5687 if ((collectBuffer
.length() == 1)
5688 && (collectBuffer
.charAt(0) == '*')) {
5689 // G2 --> United Kingdom set
5690 currentState
.g2Charset
= CharacterSet
.UK
;
5692 if ((collectBuffer
.length() == 1)
5693 && (collectBuffer
.charAt(0) == '+')) {
5694 // G3 --> United Kingdom set
5695 currentState
.g3Charset
= CharacterSet
.UK
;
5700 if ((collectBuffer
.length() == 1)
5701 && (collectBuffer
.charAt(0) == '(')) {
5703 currentState
.g0Charset
= CharacterSet
.US
;
5705 if ((collectBuffer
.length() == 1)
5706 && (collectBuffer
.charAt(0) == ')')) {
5708 currentState
.g1Charset
= CharacterSet
.US
;
5710 if ((type
== DeviceType
.VT220
)
5711 || (type
== DeviceType
.XTERM
)) {
5713 if ((collectBuffer
.length() == 1)
5714 && (collectBuffer
.charAt(0) == '*')) {
5716 currentState
.g2Charset
= CharacterSet
.US
;
5718 if ((collectBuffer
.length() == 1)
5719 && (collectBuffer
.charAt(0) == '+')) {
5721 currentState
.g3Charset
= CharacterSet
.US
;
5726 if ((type
== DeviceType
.VT220
)
5727 || (type
== DeviceType
.XTERM
)) {
5729 if ((collectBuffer
.length() == 1)
5730 && (collectBuffer
.charAt(0) == '(')) {
5732 currentState
.g0Charset
= CharacterSet
.NRC_FINNISH
;
5734 if ((collectBuffer
.length() == 1)
5735 && (collectBuffer
.charAt(0) == ')')) {
5737 currentState
.g1Charset
= CharacterSet
.NRC_FINNISH
;
5739 if ((collectBuffer
.length() == 1)
5740 && (collectBuffer
.charAt(0) == '*')) {
5742 currentState
.g2Charset
= CharacterSet
.NRC_FINNISH
;
5744 if ((collectBuffer
.length() == 1)
5745 && (collectBuffer
.charAt(0) == '+')) {
5747 currentState
.g3Charset
= CharacterSet
.NRC_FINNISH
;
5754 if ((type
== DeviceType
.VT220
)
5755 || (type
== DeviceType
.XTERM
)) {
5757 if ((collectBuffer
.length() == 1)
5758 && (collectBuffer
.charAt(0) == '(')) {
5760 currentState
.g0Charset
= CharacterSet
.NRC_NORWEGIAN
;
5762 if ((collectBuffer
.length() == 1)
5763 && (collectBuffer
.charAt(0) == ')')) {
5765 currentState
.g1Charset
= CharacterSet
.NRC_NORWEGIAN
;
5767 if ((collectBuffer
.length() == 1)
5768 && (collectBuffer
.charAt(0) == '*')) {
5770 currentState
.g2Charset
= CharacterSet
.NRC_NORWEGIAN
;
5772 if ((collectBuffer
.length() == 1)
5773 && (collectBuffer
.charAt(0) == '+')) {
5775 currentState
.g3Charset
= CharacterSet
.NRC_NORWEGIAN
;
5780 if ((type
== DeviceType
.VT220
)
5781 || (type
== DeviceType
.XTERM
)) {
5783 if ((collectBuffer
.length() == 1)
5784 && (collectBuffer
.charAt(0) == ' ')) {
5791 if ((type
== DeviceType
.VT220
)
5792 || (type
== DeviceType
.XTERM
)) {
5794 if ((collectBuffer
.length() == 1)
5795 && (collectBuffer
.charAt(0) == ' ')) {
5802 if ((type
== DeviceType
.VT220
)
5803 || (type
== DeviceType
.XTERM
)) {
5805 if ((collectBuffer
.length() == 1)
5806 && (collectBuffer
.charAt(0) == '(')) {
5808 currentState
.g0Charset
= CharacterSet
.NRC_SWEDISH
;
5810 if ((collectBuffer
.length() == 1)
5811 && (collectBuffer
.charAt(0) == ')')) {
5813 currentState
.g1Charset
= CharacterSet
.NRC_SWEDISH
;
5815 if ((collectBuffer
.length() == 1)
5816 && (collectBuffer
.charAt(0) == '*')) {
5818 currentState
.g2Charset
= CharacterSet
.NRC_SWEDISH
;
5820 if ((collectBuffer
.length() == 1)
5821 && (collectBuffer
.charAt(0) == '+')) {
5823 currentState
.g3Charset
= CharacterSet
.NRC_SWEDISH
;
5831 if ((type
== DeviceType
.VT220
)
5832 || (type
== DeviceType
.XTERM
)) {
5834 if ((collectBuffer
.length() == 1)
5835 && (collectBuffer
.charAt(0) == '(')) {
5837 currentState
.g0Charset
= CharacterSet
.NRC_GERMAN
;
5839 if ((collectBuffer
.length() == 1)
5840 && (collectBuffer
.charAt(0) == ')')) {
5842 currentState
.g1Charset
= CharacterSet
.NRC_GERMAN
;
5844 if ((collectBuffer
.length() == 1)
5845 && (collectBuffer
.charAt(0) == '*')) {
5847 currentState
.g2Charset
= CharacterSet
.NRC_GERMAN
;
5849 if ((collectBuffer
.length() == 1)
5850 && (collectBuffer
.charAt(0) == '+')) {
5852 currentState
.g3Charset
= CharacterSet
.NRC_GERMAN
;
5863 if ((type
== DeviceType
.VT220
)
5864 || (type
== DeviceType
.XTERM
)) {
5866 if ((collectBuffer
.length() == 1)
5867 && (collectBuffer
.charAt(0) == '(')) {
5869 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH_CA
;
5871 if ((collectBuffer
.length() == 1)
5872 && (collectBuffer
.charAt(0) == ')')) {
5874 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH_CA
;
5876 if ((collectBuffer
.length() == 1)
5877 && (collectBuffer
.charAt(0) == '*')) {
5879 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH_CA
;
5881 if ((collectBuffer
.length() == 1)
5882 && (collectBuffer
.charAt(0) == '+')) {
5884 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH_CA
;
5889 if ((type
== DeviceType
.VT220
)
5890 || (type
== DeviceType
.XTERM
)) {
5892 if ((collectBuffer
.length() == 1)
5893 && (collectBuffer
.charAt(0) == '(')) {
5895 currentState
.g0Charset
= CharacterSet
.NRC_FRENCH
;
5897 if ((collectBuffer
.length() == 1)
5898 && (collectBuffer
.charAt(0) == ')')) {
5900 currentState
.g1Charset
= CharacterSet
.NRC_FRENCH
;
5902 if ((collectBuffer
.length() == 1)
5903 && (collectBuffer
.charAt(0) == '*')) {
5905 currentState
.g2Charset
= CharacterSet
.NRC_FRENCH
;
5907 if ((collectBuffer
.length() == 1)
5908 && (collectBuffer
.charAt(0) == '+')) {
5910 currentState
.g3Charset
= CharacterSet
.NRC_FRENCH
;
5922 if ((type
== DeviceType
.VT220
)
5923 || (type
== DeviceType
.XTERM
)) {
5925 if ((collectBuffer
.length() == 1)
5926 && (collectBuffer
.charAt(0) == '(')) {
5928 currentState
.g0Charset
= CharacterSet
.NRC_ITALIAN
;
5930 if ((collectBuffer
.length() == 1)
5931 && (collectBuffer
.charAt(0) == ')')) {
5933 currentState
.g1Charset
= CharacterSet
.NRC_ITALIAN
;
5935 if ((collectBuffer
.length() == 1)
5936 && (collectBuffer
.charAt(0) == '*')) {
5938 currentState
.g2Charset
= CharacterSet
.NRC_ITALIAN
;
5940 if ((collectBuffer
.length() == 1)
5941 && (collectBuffer
.charAt(0) == '+')) {
5943 currentState
.g3Charset
= CharacterSet
.NRC_ITALIAN
;
5948 if ((type
== DeviceType
.VT220
)
5949 || (type
== DeviceType
.XTERM
)) {
5951 if ((collectBuffer
.length() == 1)
5952 && (collectBuffer
.charAt(0) == '(')) {
5954 currentState
.g0Charset
= CharacterSet
.NRC_SPANISH
;
5956 if ((collectBuffer
.length() == 1)
5957 && (collectBuffer
.charAt(0) == ')')) {
5959 currentState
.g1Charset
= CharacterSet
.NRC_SPANISH
;
5961 if ((collectBuffer
.length() == 1)
5962 && (collectBuffer
.charAt(0) == '*')) {
5964 currentState
.g2Charset
= CharacterSet
.NRC_SPANISH
;
5966 if ((collectBuffer
.length() == 1)
5967 && (collectBuffer
.charAt(0) == '+')) {
5969 currentState
.g3Charset
= CharacterSet
.NRC_SPANISH
;
6016 // 0x9C goes to GROUND
6024 // 00-17, 19, 1C-1F --> execute
6026 handleControlChar((char) ch
);
6029 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
6030 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6032 scanState
= ScanState
.CSI_INTERMEDIATE
;
6035 // 30-39, 3B --> param, then switch to CSI_PARAM
6036 if ((ch
>= '0') && (ch
<= '9')) {
6038 scanState
= ScanState
.CSI_PARAM
;
6042 scanState
= ScanState
.CSI_PARAM
;
6045 // 3C-3F --> collect, then switch to CSI_PARAM
6046 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6048 scanState
= ScanState
.CSI_PARAM
;
6051 // 40-7E --> dispatch, then switch to GROUND
6052 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6055 // ICH - Insert character
6063 // CUD - Cursor down
6067 // CUF - Cursor forward
6071 // CUB - Cursor backward
6075 // CNL - Cursor down and to column 1
6076 if (type
== DeviceType
.XTERM
) {
6081 // CPL - Cursor up and to column 1
6082 if (type
== DeviceType
.XTERM
) {
6087 // CHA - Cursor to column # in current row
6088 if (type
== DeviceType
.XTERM
) {
6093 // CUP - Cursor position
6097 // CHT - Cursor forward X tab stops (default 1)
6098 if (type
== DeviceType
.XTERM
) {
6103 // ED - Erase in display
6107 // EL - Erase in line
6122 // DCH - Delete character
6129 // Scroll up X lines (default 1)
6130 if (type
== DeviceType
.XTERM
) {
6131 boolean xtermPrivateModeFlag
= false;
6132 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
6133 if (collectBuffer
.charAt(i
) == '?') {
6134 xtermPrivateModeFlag
= true;
6138 if (xtermPrivateModeFlag
) {
6146 // Scroll down X lines (default 1)
6147 if (type
== DeviceType
.XTERM
) {
6156 if ((type
== DeviceType
.VT220
)
6157 || (type
== DeviceType
.XTERM
)) {
6159 // ECH - Erase character
6166 // CBT - Cursor backward X tab stops (default 1)
6167 if (type
== DeviceType
.XTERM
) {
6178 // HPA - Cursor to column # in current row. Same as CHA
6179 if (type
== DeviceType
.XTERM
) {
6184 // HPR - Cursor right. Same as CUF
6185 if (type
== DeviceType
.XTERM
) {
6190 // REP - Repeat last char X times
6191 if (type
== DeviceType
.XTERM
) {
6196 // DA - Device attributes
6200 // VPA - Cursor to row, current column.
6201 if (type
== DeviceType
.XTERM
) {
6206 // VPR - Cursor down. Same as CUD
6207 if (type
== DeviceType
.XTERM
) {
6212 // HVP - Horizontal and vertical position
6216 // TBC - Tabulation clear
6220 // Sets an ANSI or DEC private toggle
6224 if ((type
== DeviceType
.VT220
)
6225 || (type
== DeviceType
.XTERM
)) {
6227 // Printer functions
6235 // Sets an ANSI or DEC private toggle
6239 // SGR - Select graphics rendition
6243 // DSR - Device status report
6250 // DECLL - Load leds
6254 // DECSTBM - Set top and bottom margins
6258 // Save cursor (ANSI.SYS)
6259 if (type
== DeviceType
.XTERM
) {
6260 savedState
.cursorX
= currentState
.cursorX
;
6261 savedState
.cursorY
= currentState
.cursorY
;
6265 if (type
== DeviceType
.XTERM
) {
6266 // Window operations
6271 // Restore cursor (ANSI.SYS)
6272 if (type
== DeviceType
.XTERM
) {
6273 cursorPosition(savedState
.cursorY
, savedState
.cursorX
);
6280 // DECREQTPARM - Request terminal parameters
6296 // 0x9C goes to GROUND
6301 // 0x3A goes to CSI_IGNORE
6303 scanState
= ScanState
.CSI_IGNORE
;
6308 // 00-17, 19, 1C-1F --> execute
6310 handleControlChar((char) ch
);
6313 // 20-2F --> collect, then switch to CSI_INTERMEDIATE
6314 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6316 scanState
= ScanState
.CSI_INTERMEDIATE
;
6319 // 30-39, 3B --> param
6320 if ((ch
>= '0') && (ch
<= '9')) {
6327 // 0x3A goes to CSI_IGNORE
6329 scanState
= ScanState
.CSI_IGNORE
;
6331 // 0x3C-3F goes to CSI_IGNORE
6332 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6333 scanState
= ScanState
.CSI_IGNORE
;
6336 // 40-7E --> dispatch, then switch to GROUND
6337 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6340 // ICH - Insert character
6348 // CUD - Cursor down
6352 // CUF - Cursor forward
6356 // CUB - Cursor backward
6360 // CNL - Cursor down and to column 1
6361 if (type
== DeviceType
.XTERM
) {
6366 // CPL - Cursor up and to column 1
6367 if (type
== DeviceType
.XTERM
) {
6372 // CHA - Cursor to column # in current row
6373 if (type
== DeviceType
.XTERM
) {
6378 // CUP - Cursor position
6382 // CHT - Cursor forward X tab stops (default 1)
6383 if (type
== DeviceType
.XTERM
) {
6388 // ED - Erase in display
6392 // EL - Erase in line
6407 // DCH - Delete character
6414 // Scroll up X lines (default 1)
6415 if (type
== DeviceType
.XTERM
) {
6416 boolean xtermPrivateModeFlag
= false;
6417 for (int i
= 0; i
< collectBuffer
.length(); i
++) {
6418 if (collectBuffer
.charAt(i
) == '?') {
6419 xtermPrivateModeFlag
= true;
6423 if (xtermPrivateModeFlag
) {
6431 // Scroll down X lines (default 1)
6432 if (type
== DeviceType
.XTERM
) {
6441 if ((type
== DeviceType
.VT220
)
6442 || (type
== DeviceType
.XTERM
)) {
6444 // ECH - Erase character
6451 // CBT - Cursor backward X tab stops (default 1)
6452 if (type
== DeviceType
.XTERM
) {
6463 // HPA - Cursor to column # in current row. Same as CHA
6464 if (type
== DeviceType
.XTERM
) {
6469 // HPR - Cursor right. Same as CUF
6470 if (type
== DeviceType
.XTERM
) {
6475 // REP - Repeat last char X times
6476 if (type
== DeviceType
.XTERM
) {
6481 // DA - Device attributes
6485 // VPA - Cursor to row, current column.
6486 if (type
== DeviceType
.XTERM
) {
6491 // VPR - Cursor down. Same as CUD
6492 if (type
== DeviceType
.XTERM
) {
6497 // HVP - Horizontal and vertical position
6501 // TBC - Tabulation clear
6505 // Sets an ANSI or DEC private toggle
6509 if ((type
== DeviceType
.VT220
)
6510 || (type
== DeviceType
.XTERM
)) {
6512 // Printer functions
6520 // Sets an ANSI or DEC private toggle
6524 // SGR - Select graphics rendition
6528 // DSR - Device status report
6535 // DECLL - Load leds
6539 // DECSTBM - Set top and bottom margins
6545 if (type
== DeviceType
.XTERM
) {
6546 // Window operations
6555 // DECREQTPARM - Request terminal parameters
6572 case CSI_INTERMEDIATE
:
6573 // 00-17, 19, 1C-1F --> execute
6575 handleControlChar((char) ch
);
6578 // 20-2F --> collect
6579 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6583 // 0x30-3F goes to CSI_IGNORE
6584 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
6585 scanState
= ScanState
.CSI_IGNORE
;
6588 // 40-7E --> dispatch, then switch to GROUND
6589 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6641 if (((type
== DeviceType
.VT220
)
6642 || (type
== DeviceType
.XTERM
))
6643 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
6645 // DECSCL - compatibility level
6648 if ((type
== DeviceType
.XTERM
)
6649 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '!')
6651 // DECSTR - Soft terminal reset
6656 if (((type
== DeviceType
.VT220
)
6657 || (type
== DeviceType
.XTERM
))
6658 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == '\"')
6686 // 00-17, 19, 1C-1F --> execute
6688 handleControlChar((char) ch
);
6691 // 20-2F --> collect
6692 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6696 // 40-7E --> ignore, then switch to GROUND
6697 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6701 // 20-3F, 7F --> ignore
6707 // 0x9C goes to GROUND
6712 // 0x1B 0x5C goes to GROUND
6717 if ((collectBuffer
.length() > 0)
6718 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6724 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
6725 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6727 scanState
= ScanState
.DCS_INTERMEDIATE
;
6730 // 30-39, 3B --> param, then switch to DCS_PARAM
6731 if ((ch
>= '0') && (ch
<= '9')) {
6733 scanState
= ScanState
.DCS_PARAM
;
6737 scanState
= ScanState
.DCS_PARAM
;
6740 // 3C-3F --> collect, then switch to DCS_PARAM
6741 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6743 scanState
= ScanState
.DCS_PARAM
;
6746 // 00-17, 19, 1C-1F, 7F --> ignore
6748 // 0x3A goes to DCS_IGNORE
6750 scanState
= ScanState
.DCS_IGNORE
;
6753 // 0x71 goes to DCS_SIXEL
6755 sixelParseBuffer
.setLength(0);
6756 scanState
= ScanState
.DCS_SIXEL
;
6757 } else if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6758 // 0x40-7E goes to DCS_PASSTHROUGH
6759 scanState
= ScanState
.DCS_PASSTHROUGH
;
6763 case DCS_INTERMEDIATE
:
6765 // 0x9C goes to GROUND
6770 // 0x1B 0x5C goes to GROUND
6775 if ((collectBuffer
.length() > 0)
6776 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6782 // 0x30-3F goes to DCS_IGNORE
6783 if ((ch
>= 0x30) && (ch
<= 0x3F)) {
6784 scanState
= ScanState
.DCS_IGNORE
;
6787 // 0x40-7E goes to DCS_PASSTHROUGH
6788 if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6789 scanState
= ScanState
.DCS_PASSTHROUGH
;
6792 // 00-17, 19, 1C-1F, 7F --> ignore
6797 // 0x9C goes to GROUND
6802 // 0x1B 0x5C goes to GROUND
6807 if ((collectBuffer
.length() > 0)
6808 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6814 // 20-2F --> collect, then switch to DCS_INTERMEDIATE
6815 if ((ch
>= 0x20) && (ch
<= 0x2F)) {
6817 scanState
= ScanState
.DCS_INTERMEDIATE
;
6820 // 30-39, 3B --> param
6821 if ((ch
>= '0') && (ch
<= '9')) {
6828 // 00-17, 19, 1C-1F, 7F --> ignore
6830 // 0x3A, 3C-3F goes to DCS_IGNORE
6832 scanState
= ScanState
.DCS_IGNORE
;
6834 if ((ch
>= 0x3C) && (ch
<= 0x3F)) {
6835 scanState
= ScanState
.DCS_IGNORE
;
6838 // 0x71 goes to DCS_SIXEL
6840 sixelParseBuffer
.setLength(0);
6841 scanState
= ScanState
.DCS_SIXEL
;
6842 } else if ((ch
>= 0x40) && (ch
<= 0x7E)) {
6843 // 0x40-7E goes to DCS_PASSTHROUGH
6844 scanState
= ScanState
.DCS_PASSTHROUGH
;
6848 case DCS_PASSTHROUGH
:
6849 // 0x9C goes to GROUND
6854 // 0x1B 0x5C goes to GROUND
6859 if ((collectBuffer
.length() > 0)
6860 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6866 // 00-17, 19, 1C-1F, 20-7E --> put
6868 // We ignore all DCS except sixel.
6872 // We ignore all DCS except sixel.
6875 if ((ch
>= 0x1C) && (ch
<= 0x1F)) {
6876 // We ignore all DCS except sixel.
6879 if ((ch
>= 0x20) && (ch
<= 0x7E)) {
6880 // We ignore all DCS except sixel.
6889 // 00-17, 19, 1C-1F, 20-7F --> ignore
6891 // 0x9C goes to GROUND
6899 // 0x9C goes to GROUND
6906 // 0x1B 0x5C goes to GROUND
6912 if ((collectBuffer
.length() > 0)
6913 && (collectBuffer
.charAt(collectBuffer
.length() - 1) == 0x1B)
6921 // 00-17, 19, 1C-1F, 20-7E --> put
6924 || ((ch
>= 0x1C) && (ch
<= 0x1F))
6925 || ((ch
>= 0x20) && (ch
<= 0x7E))
6927 sixelParseBuffer
.append((char) ch
);
6933 case SOSPMAPC_STRING
:
6934 // 00-17, 19, 1C-1F, 20-7F --> ignore
6936 // Special case for Jexer: PM can pass one control character
6941 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
6945 // 0x9C goes to GROUND
6953 // Special case for Xterm: OSC can pass control characters
6954 if ((ch
== 0x9C) || (ch
== 0x07) || (ch
== 0x1B)) {
6958 // 00-17, 19, 1C-1F --> ignore
6960 // 20-7F --> osc_put
6961 if ((ch
>= 0x20) && (ch
<= 0x7F)) {
6965 // 0x9C goes to GROUND
6972 case VT52_DIRECT_CURSOR_ADDRESS
:
6973 // This is a special case for the VT52 sequence "ESC Y l c"
6974 if (collectBuffer
.length() == 0) {
6976 } else if (collectBuffer
.length() == 1) {
6977 // We've got the two characters, one in the buffer and the
6979 cursorPosition(collectBuffer
.charAt(0) - '\040', ch
- '\040');
6988 * Expose current cursor X to outside world.
6990 * @return current cursor X
6992 public final int getCursorX() {
6993 if (display
.get(currentState
.cursorY
).isDoubleWidth()) {
6994 return currentState
.cursorX
* 2;
6996 return currentState
.cursorX
;
7000 * Expose current cursor Y to outside world.
7002 * @return current cursor Y
7004 public final int getCursorY() {
7005 return currentState
.cursorY
;
7009 * Returns true if this terminal has requested the mouse pointer be
7012 * @return true if this terminal has requested the mouse pointer be
7015 public final boolean hasHiddenMousePointer() {
7016 return hideMousePointer
;
7020 * Get the mouse protocol.
7022 * @return MouseProtocol.OFF, MouseProtocol.X10, etc.
7024 public MouseProtocol
getMouseProtocol() {
7025 return mouseProtocol
;
7029 * Draw the left and right cells of a two-cell-wide (full-width) glyph.
7031 * @param leftX the x position to draw the left half to
7032 * @param leftY the y position to draw the left half to
7033 * @param rightX the x position to draw the right half to
7034 * @param rightY the y position to draw the right half to
7035 * @param ch the character to draw
7037 private void drawHalves(final int leftX
, final int leftY
,
7038 final int rightX
, final int rightY
, final int ch
) {
7040 // System.err.println("drawHalves(): " + Integer.toHexString(ch));
7042 if (lastTextHeight
!= textHeight
) {
7043 glyphMaker
= GlyphMaker
.getInstance(textHeight
);
7044 lastTextHeight
= textHeight
;
7047 Cell cell
= new Cell(ch
, currentState
.attr
);
7048 BufferedImage image
= glyphMaker
.getImage(cell
, textWidth
* 2,
7050 BufferedImage leftImage
= image
.getSubimage(0, 0, textWidth
,
7052 BufferedImage rightImage
= image
.getSubimage(textWidth
, 0, textWidth
,
7055 Cell left
= new Cell(cell
);
7056 left
.setImage(leftImage
);
7057 left
.setWidth(Cell
.Width
.LEFT
);
7058 display
.get(leftY
).replace(leftX
, left
);
7060 Cell right
= new Cell(cell
);
7061 right
.setImage(rightImage
);
7062 right
.setWidth(Cell
.Width
.RIGHT
);
7063 display
.get(rightY
).replace(rightX
, right
);
7067 * Set the width of a character cell in pixels.
7069 * @param textWidth the width in pixels of a character cell
7071 public void setTextWidth(final int textWidth
) {
7072 this.textWidth
= textWidth
;
7076 * Set the height of a character cell in pixels.
7078 * @param textHeight the height in pixels of a character cell
7080 public void setTextHeight(final int textHeight
) {
7081 this.textHeight
= textHeight
;
7085 * Parse a sixel string into a bitmap image, and overlay that image onto
7088 private void parseSixel() {
7091 System.err.println("parseSixel(): '" + sixelParseBuffer.toString()
7095 Sixel sixel
= new Sixel(sixelParseBuffer
.toString(), sixelPalette
);
7096 BufferedImage image
= sixel
.getImage();
7098 // System.err.println("parseSixel(): image " + image);
7100 if (image
== null) {
7101 // Sixel data was malformed in some way, bail out.
7104 if ((image
.getWidth() < 1)
7105 || (image
.getWidth() > 10000)
7106 || (image
.getHeight() < 1)
7107 || (image
.getHeight() > 10000)
7112 imageToCells(image
, true);
7116 * Parse a "Jexer" RGB image string into a bitmap image, and overlay that
7117 * image onto the text cells.
7119 * @param pw width token
7120 * @param ph height token
7121 * @param ps scroll token
7122 * @param data pixel data
7124 private void parseJexerImageRGB(final String pw
, final String ph
,
7125 final String ps
, final String data
) {
7128 int imageHeight
= 0;
7129 boolean scroll
= false;
7131 imageWidth
= Integer
.parseInt(pw
);
7132 imageHeight
= Integer
.parseInt(ph
);
7133 } catch (NumberFormatException e
) {
7137 if ((imageWidth
< 1)
7138 || (imageWidth
> 10000)
7139 || (imageHeight
< 1)
7140 || (imageHeight
> 10000)
7144 if (ps
.equals("1")) {
7146 } else if (ps
.equals("0")) {
7152 byte [] bytes
= StringUtils
.fromBase64(data
.getBytes());
7153 if (bytes
.length
!= (imageWidth
* imageHeight
* 3)) {
7157 BufferedImage image
= new BufferedImage(imageWidth
, imageHeight
,
7158 BufferedImage
.TYPE_INT_ARGB
);
7160 for (int x
= 0; x
< imageWidth
; x
++) {
7161 for (int y
= 0; y
< imageHeight
; y
++) {
7162 int red
= bytes
[(y
* imageWidth
* 3) + (x
* 3) ];
7166 int green
= bytes
[(y
* imageWidth
* 3) + (x
* 3) + 1];
7170 int blue
= bytes
[(y
* imageWidth
* 3) + (x
* 3) + 2];
7174 int rgb
= 0xFF000000 | (red
<< 16) | (green
<< 8) | blue
;
7175 image
.setRGB(x
, y
, rgb
);
7179 imageToCells(image
, scroll
);
7183 * Parse a "Jexer" PNG or JPG image string into a bitmap image, and
7184 * overlay that image onto the text cells.
7186 * @param type 1 for PNG, 2 for JPG
7187 * @param ps scroll token
7188 * @param data pixel data
7190 private void parseJexerImageFile(final int type
, final String ps
,
7191 final String data
) {
7194 int imageHeight
= 0;
7195 boolean scroll
= false;
7196 BufferedImage image
= null;
7198 byte [] bytes
= StringUtils
.fromBase64(data
.getBytes());
7202 if ((bytes
[0] != (byte) 0x89)
7203 || (bytes
[1] != 'P')
7204 || (bytes
[2] != 'N')
7205 || (bytes
[3] != 'G')
7206 || (bytes
[4] != (byte) 0x0D)
7207 || (bytes
[5] != (byte) 0x0A)
7208 || (bytes
[6] != (byte) 0x1A)
7209 || (bytes
[7] != (byte) 0x0A)
7211 // File does not have PNG header, bail out.
7217 if ((bytes
[0] != (byte) 0XFF)
7218 || (bytes
[1] != (byte) 0xD8)
7219 || (bytes
[2] != (byte) 0xFF)
7221 // File does not have JPG header, bail out.
7227 // Unsupported type, bail out.
7231 image
= ImageIO
.read(new ByteArrayInputStream(bytes
));
7232 } catch (IOException e
) {
7236 assert (image
!= null);
7237 imageWidth
= image
.getWidth();
7238 imageHeight
= image
.getHeight();
7239 if ((imageWidth
< 1)
7240 || (imageWidth
> 10000)
7241 || (imageHeight
< 1)
7242 || (imageHeight
> 10000)
7246 if (ps
.equals("1")) {
7248 } else if (ps
.equals("0")) {
7254 imageToCells(image
, scroll
);
7258 * Break up an image into the cells at the current cursor.
7260 * @param image the image to display
7261 * @param scroll if true, scroll the image and move the cursor
7263 private void imageToCells(final BufferedImage image
, final boolean scroll
) {
7264 assert (image
!= null);
7269 * Break up the image into text cell sized pieces as a new array of
7272 * Note original column position x0.
7276 * 1. Advance (printCharacter(' ')) for horizontal increment, or
7277 * index (linefeed() + cursorPosition(y, x0)) for vertical
7280 * 2. Set (x, y) cell image data.
7282 * 3. For the right and bottom edges:
7284 * a. Render the text to pixels using Terminus font.
7286 * b. Blit the image on top of the text, using alpha channel.
7288 int cellColumns
= image
.getWidth() / textWidth
;
7289 if (cellColumns
* textWidth
< image
.getWidth()) {
7292 int cellRows
= image
.getHeight() / textHeight
;
7293 if (cellRows
* textHeight
< image
.getHeight()) {
7297 // Break the image up into an array of cells.
7298 Cell
[][] cells
= new Cell
[cellColumns
][cellRows
];
7300 for (int x
= 0; x
< cellColumns
; x
++) {
7301 for (int y
= 0; y
< cellRows
; y
++) {
7303 int width
= textWidth
;
7304 if ((x
+ 1) * textWidth
> image
.getWidth()) {
7305 width
= image
.getWidth() - (x
* textWidth
);
7307 int height
= textHeight
;
7308 if ((y
+ 1) * textHeight
> image
.getHeight()) {
7309 height
= image
.getHeight() - (y
* textHeight
);
7312 Cell cell
= new Cell();
7313 cell
.setImage(image
.getSubimage(x
* textWidth
,
7314 y
* textHeight
, width
, height
));
7320 int x0
= currentState
.cursorX
;
7321 int y0
= currentState
.cursorY
;
7322 for (int y
= 0; y
< cellRows
; y
++) {
7323 for (int x
= 0; x
< cellColumns
; x
++) {
7324 assert (currentState
.cursorX
<= rightMargin
);
7326 // A real sixel terminal would render the text of the current
7327 // cell first, then image over it (accounting for blank
7328 // pixels). We do not support that. A cell is either text,
7329 // or image, but not a mix of image-over-text.
7330 DisplayLine line
= display
.get(currentState
.cursorY
);
7331 line
.replace(currentState
.cursorX
, cells
[x
][y
]);
7333 // If at the end of the visible screen, stop.
7334 if (currentState
.cursorX
== rightMargin
) {
7337 // Room for more image on the visible screen.
7338 currentState
.cursorX
++;
7340 if (currentState
.cursorY
< scrollRegionBottom
- 1) {
7341 // Not at the bottom, down a line.
7343 } else if (scroll
== true) {
7344 // At the bottom, scroll as needed.
7347 // At the bottom, no more scrolling, done.
7351 cursorPosition(currentState
.cursorY
, x0
);
7354 if (scroll
== false) {
7355 cursorPosition(y0
, x0
);