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daa4106c | 1 | /* |
b1589621 KL |
2 | * Jexer - Java Text User Interface |
3 | * | |
e16dda65 | 4 | * The MIT License (MIT) |
b1589621 | 5 | * |
a2018e99 | 6 | * Copyright (C) 2017 Kevin Lamonte |
b1589621 | 7 | * |
e16dda65 KL |
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: | |
b1589621 | 14 | * |
e16dda65 KL |
15 | * The above copyright notice and this permission notice shall be included in |
16 | * all copies or substantial portions of the Software. | |
b1589621 | 17 | * |
e16dda65 KL |
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. | |
7b5261bc KL |
25 | * |
26 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] | |
27 | * @version 1 | |
b1589621 | 28 | */ |
42873e30 | 29 | package jexer.backend; |
b1589621 KL |
30 | |
31 | import java.io.BufferedReader; | |
4328bb42 KL |
32 | import java.io.FileDescriptor; |
33 | import java.io.FileInputStream; | |
b1589621 KL |
34 | import java.io.InputStream; |
35 | import java.io.InputStreamReader; | |
36 | import java.io.IOException; | |
37 | import java.io.OutputStream; | |
38 | import java.io.OutputStreamWriter; | |
39 | import java.io.PrintWriter; | |
40 | import java.io.Reader; | |
41 | import java.io.UnsupportedEncodingException; | |
42 | import java.util.ArrayList; | |
43 | import java.util.Date; | |
44 | import java.util.List; | |
45 | import java.util.LinkedList; | |
46 | ||
42873e30 KL |
47 | import jexer.bits.Cell; |
48 | import jexer.bits.CellAttributes; | |
b1589621 KL |
49 | import jexer.bits.Color; |
50 | import jexer.event.TInputEvent; | |
51 | import jexer.event.TKeypressEvent; | |
52 | import jexer.event.TMouseEvent; | |
53 | import jexer.event.TResizeEvent; | |
b1589621 KL |
54 | import static jexer.TKeypress.*; |
55 | ||
56 | /** | |
7b5261bc KL |
57 | * This class reads keystrokes and mouse events and emits output to ANSI |
58 | * X3.64 / ECMA-48 type terminals e.g. xterm, linux, vt100, ansi.sys, etc. | |
b1589621 | 59 | */ |
42873e30 KL |
60 | public final class ECMA48Terminal extends LogicalScreen |
61 | implements TerminalReader, Runnable { | |
62 | ||
63 | /** | |
64 | * Emit debugging to stderr. | |
65 | */ | |
66 | private boolean debugToStderr = false; | |
b1589621 | 67 | |
15ea4d73 KL |
68 | /** |
69 | * If true, emit T.416-style RGB colors. This is a) expensive in | |
70 | * bandwidth, and b) potentially terrible looking for non-xterms. | |
71 | */ | |
72 | private static boolean doRgbColor = false; | |
73 | ||
b1589621 | 74 | /** |
7b5261bc KL |
75 | * The session information. |
76 | */ | |
77 | private SessionInfo sessionInfo; | |
78 | ||
79 | /** | |
80 | * Getter for sessionInfo. | |
81 | * | |
82 | * @return the SessionInfo | |
b1589621 | 83 | */ |
2b9c27db | 84 | public SessionInfo getSessionInfo() { |
7b5261bc KL |
85 | return sessionInfo; |
86 | } | |
b1589621 | 87 | |
4328bb42 | 88 | /** |
7b5261bc | 89 | * The event queue, filled up by a thread reading on input. |
4328bb42 KL |
90 | */ |
91 | private List<TInputEvent> eventQueue; | |
92 | ||
93 | /** | |
94 | * If true, we want the reader thread to exit gracefully. | |
95 | */ | |
96 | private boolean stopReaderThread; | |
97 | ||
98 | /** | |
7b5261bc | 99 | * The reader thread. |
4328bb42 KL |
100 | */ |
101 | private Thread readerThread; | |
102 | ||
b1589621 KL |
103 | /** |
104 | * Parameters being collected. E.g. if the string is \033[1;3m, then | |
105 | * params[0] will be 1 and params[1] will be 3. | |
106 | */ | |
107 | private ArrayList<String> params; | |
108 | ||
b1589621 | 109 | /** |
7b5261bc | 110 | * States in the input parser. |
b1589621 KL |
111 | */ |
112 | private enum ParseState { | |
7b5261bc KL |
113 | GROUND, |
114 | ESCAPE, | |
115 | ESCAPE_INTERMEDIATE, | |
116 | CSI_ENTRY, | |
117 | CSI_PARAM, | |
b5f2a6db KL |
118 | MOUSE, |
119 | MOUSE_SGR, | |
b1589621 KL |
120 | } |
121 | ||
122 | /** | |
7b5261bc | 123 | * Current parsing state. |
b1589621 KL |
124 | */ |
125 | private ParseState state; | |
126 | ||
127 | /** | |
7b5261bc KL |
128 | * The time we entered ESCAPE. If we get a bare escape without a code |
129 | * following it, this is used to return that bare escape. | |
b1589621 KL |
130 | */ |
131 | private long escapeTime; | |
132 | ||
a83fea2b KL |
133 | /** |
134 | * The time we last checked the window size. We try not to spawn stty | |
135 | * more than once per second. | |
136 | */ | |
137 | private long windowSizeTime; | |
138 | ||
b1589621 KL |
139 | /** |
140 | * true if mouse1 was down. Used to report mouse1 on the release event. | |
141 | */ | |
142 | private boolean mouse1; | |
143 | ||
144 | /** | |
145 | * true if mouse2 was down. Used to report mouse2 on the release event. | |
146 | */ | |
147 | private boolean mouse2; | |
148 | ||
149 | /** | |
150 | * true if mouse3 was down. Used to report mouse3 on the release event. | |
151 | */ | |
152 | private boolean mouse3; | |
153 | ||
154 | /** | |
155 | * Cache the cursor visibility value so we only emit the sequence when we | |
156 | * need to. | |
157 | */ | |
158 | private boolean cursorOn = true; | |
159 | ||
160 | /** | |
161 | * Cache the last window size to figure out if a TResizeEvent needs to be | |
162 | * generated. | |
163 | */ | |
164 | private TResizeEvent windowResize = null; | |
165 | ||
166 | /** | |
167 | * If true, then we changed System.in and need to change it back. | |
168 | */ | |
169 | private boolean setRawMode; | |
170 | ||
171 | /** | |
172 | * The terminal's input. If an InputStream is not specified in the | |
4328bb42 KL |
173 | * constructor, then this InputStreamReader will be bound to System.in |
174 | * with UTF-8 encoding. | |
b1589621 KL |
175 | */ |
176 | private Reader input; | |
177 | ||
4328bb42 KL |
178 | /** |
179 | * The terminal's raw InputStream. If an InputStream is not specified in | |
180 | * the constructor, then this InputReader will be bound to System.in. | |
181 | * This is used by run() to see if bytes are available() before calling | |
182 | * (Reader)input.read(). | |
183 | */ | |
184 | private InputStream inputStream; | |
185 | ||
b1589621 KL |
186 | /** |
187 | * The terminal's output. If an OutputStream is not specified in the | |
188 | * constructor, then this PrintWriter will be bound to System.out with | |
189 | * UTF-8 encoding. | |
190 | */ | |
191 | private PrintWriter output; | |
192 | ||
92554d64 KL |
193 | /** |
194 | * The listening object that run() wakes up on new input. | |
195 | */ | |
196 | private Object listener; | |
197 | ||
88a99379 KL |
198 | /** |
199 | * Set listener to a different Object. | |
200 | * | |
201 | * @param listener the new listening object that run() wakes up on new | |
202 | * input | |
203 | */ | |
204 | public void setListener(final Object listener) { | |
205 | this.listener = listener; | |
206 | } | |
207 | ||
217c6107 KL |
208 | /** |
209 | * Get the output writer. | |
210 | * | |
211 | * @return the Writer | |
212 | */ | |
213 | public PrintWriter getOutput() { | |
7b5261bc | 214 | return output; |
217c6107 KL |
215 | } |
216 | ||
623a1bd1 KL |
217 | /** |
218 | * Check if there are events in the queue. | |
219 | * | |
220 | * @return if true, getEvents() has something to return to the backend | |
221 | */ | |
222 | public boolean hasEvents() { | |
7b5261bc KL |
223 | synchronized (eventQueue) { |
224 | return (eventQueue.size() > 0); | |
225 | } | |
623a1bd1 KL |
226 | } |
227 | ||
b1589621 | 228 | /** |
7b5261bc KL |
229 | * Call 'stty' to set cooked mode. |
230 | * | |
231 | * <p>Actually executes '/bin/sh -c stty sane cooked < /dev/tty' | |
b1589621 KL |
232 | */ |
233 | private void sttyCooked() { | |
7b5261bc | 234 | doStty(false); |
b1589621 KL |
235 | } |
236 | ||
237 | /** | |
7b5261bc KL |
238 | * Call 'stty' to set raw mode. |
239 | * | |
240 | * <p>Actually executes '/bin/sh -c stty -ignbrk -brkint -parmrk -istrip | |
241 | * -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten | |
242 | * -parenb cs8 min 1 < /dev/tty' | |
b1589621 KL |
243 | */ |
244 | private void sttyRaw() { | |
7b5261bc | 245 | doStty(true); |
b1589621 KL |
246 | } |
247 | ||
248 | /** | |
249 | * Call 'stty' to set raw or cooked mode. | |
250 | * | |
251 | * @param mode if true, set raw mode, otherwise set cooked mode | |
252 | */ | |
7b5261bc KL |
253 | private void doStty(final boolean mode) { |
254 | String [] cmdRaw = { | |
255 | "/bin/sh", "-c", "stty -ignbrk -brkint -parmrk -istrip -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten -parenb cs8 min 1 < /dev/tty" | |
256 | }; | |
257 | String [] cmdCooked = { | |
258 | "/bin/sh", "-c", "stty sane cooked < /dev/tty" | |
259 | }; | |
260 | try { | |
261 | Process process; | |
2b9c27db | 262 | if (mode) { |
7b5261bc KL |
263 | process = Runtime.getRuntime().exec(cmdRaw); |
264 | } else { | |
265 | process = Runtime.getRuntime().exec(cmdCooked); | |
266 | } | |
267 | BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8")); | |
268 | String line = in.readLine(); | |
269 | if ((line != null) && (line.length() > 0)) { | |
270 | System.err.println("WEIRD?! Normal output from stty: " + line); | |
271 | } | |
272 | while (true) { | |
273 | BufferedReader err = new BufferedReader(new InputStreamReader(process.getErrorStream(), "UTF-8")); | |
274 | line = err.readLine(); | |
275 | if ((line != null) && (line.length() > 0)) { | |
276 | System.err.println("Error output from stty: " + line); | |
277 | } | |
278 | try { | |
279 | process.waitFor(); | |
280 | break; | |
281 | } catch (InterruptedException e) { | |
282 | e.printStackTrace(); | |
283 | } | |
284 | } | |
285 | int rc = process.exitValue(); | |
286 | if (rc != 0) { | |
287 | System.err.println("stty returned error code: " + rc); | |
288 | } | |
289 | } catch (IOException e) { | |
290 | e.printStackTrace(); | |
291 | } | |
b1589621 KL |
292 | } |
293 | ||
294 | /** | |
7b5261bc | 295 | * Constructor sets up state for getEvent(). |
b1589621 | 296 | * |
92554d64 KL |
297 | * @param listener the object this backend needs to wake up when new |
298 | * input comes in | |
b1589621 KL |
299 | * @param input an InputStream connected to the remote user, or null for |
300 | * System.in. If System.in is used, then on non-Windows systems it will | |
301 | * be put in raw mode; shutdown() will (blindly!) put System.in in cooked | |
302 | * mode. input is always converted to a Reader with UTF-8 encoding. | |
303 | * @param output an OutputStream connected to the remote user, or null | |
304 | * for System.out. output is always converted to a Writer with UTF-8 | |
305 | * encoding. | |
7b5261bc KL |
306 | * @throws UnsupportedEncodingException if an exception is thrown when |
307 | * creating the InputStreamReader | |
b1589621 | 308 | */ |
92554d64 | 309 | public ECMA48Terminal(final Object listener, final InputStream input, |
7b5261bc KL |
310 | final OutputStream output) throws UnsupportedEncodingException { |
311 | ||
42873e30 | 312 | resetParser(); |
7b5261bc KL |
313 | mouse1 = false; |
314 | mouse2 = false; | |
315 | mouse3 = false; | |
316 | stopReaderThread = false; | |
92554d64 | 317 | this.listener = listener; |
7b5261bc KL |
318 | |
319 | if (input == null) { | |
320 | // inputStream = System.in; | |
321 | inputStream = new FileInputStream(FileDescriptor.in); | |
322 | sttyRaw(); | |
323 | setRawMode = true; | |
324 | } else { | |
325 | inputStream = input; | |
326 | } | |
327 | this.input = new InputStreamReader(inputStream, "UTF-8"); | |
328 | ||
7b5261bc | 329 | if (input instanceof SessionInfo) { |
ea91242c KL |
330 | // This is a TelnetInputStream that exposes window size and |
331 | // environment variables from the telnet layer. | |
7b5261bc KL |
332 | sessionInfo = (SessionInfo) input; |
333 | } | |
334 | if (sessionInfo == null) { | |
335 | if (input == null) { | |
336 | // Reading right off the tty | |
337 | sessionInfo = new TTYSessionInfo(); | |
338 | } else { | |
339 | sessionInfo = new TSessionInfo(); | |
340 | } | |
341 | } | |
342 | ||
343 | if (output == null) { | |
344 | this.output = new PrintWriter(new OutputStreamWriter(System.out, | |
345 | "UTF-8")); | |
346 | } else { | |
347 | this.output = new PrintWriter(new OutputStreamWriter(output, | |
348 | "UTF-8")); | |
349 | } | |
350 | ||
351 | // Enable mouse reporting and metaSendsEscape | |
352 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); | |
55b4f29b | 353 | this.output.flush(); |
7b5261bc | 354 | |
3e074355 KL |
355 | // Query the screen size |
356 | sessionInfo.queryWindowSize(); | |
357 | setDimensions(sessionInfo.getWindowWidth(), | |
358 | sessionInfo.getWindowHeight()); | |
359 | ||
7b5261bc KL |
360 | // Hang onto the window size |
361 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
362 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); | |
363 | ||
15ea4d73 KL |
364 | // Permit RGB colors only if externally requested |
365 | if (System.getProperty("jexer.ECMA48.rgbColor") != null) { | |
366 | if (System.getProperty("jexer.ECMA48.rgbColor").equals("true")) { | |
367 | doRgbColor = true; | |
3e074355 KL |
368 | } else { |
369 | doRgbColor = false; | |
15ea4d73 KL |
370 | } |
371 | } | |
372 | ||
7b5261bc KL |
373 | // Spin up the input reader |
374 | eventQueue = new LinkedList<TInputEvent>(); | |
375 | readerThread = new Thread(this); | |
376 | readerThread.start(); | |
42873e30 | 377 | |
42873e30 KL |
378 | // Clear the screen |
379 | this.output.write(clearAll()); | |
380 | this.output.flush(); | |
b1589621 KL |
381 | } |
382 | ||
6985c572 KL |
383 | /** |
384 | * Constructor sets up state for getEvent(). | |
385 | * | |
386 | * @param listener the object this backend needs to wake up when new | |
387 | * input comes in | |
388 | * @param input the InputStream underlying 'reader'. Its available() | |
389 | * method is used to determine if reader.read() will block or not. | |
390 | * @param reader a Reader connected to the remote user. | |
391 | * @param writer a PrintWriter connected to the remote user. | |
392 | * @param setRawMode if true, set System.in into raw mode with stty. | |
393 | * This should in general not be used. It is here solely for Demo3, | |
394 | * which uses System.in. | |
395 | * @throws IllegalArgumentException if input, reader, or writer are null. | |
396 | */ | |
397 | public ECMA48Terminal(final Object listener, final InputStream input, | |
398 | final Reader reader, final PrintWriter writer, | |
399 | final boolean setRawMode) { | |
400 | ||
401 | if (input == null) { | |
402 | throw new IllegalArgumentException("InputStream must be specified"); | |
403 | } | |
404 | if (reader == null) { | |
405 | throw new IllegalArgumentException("Reader must be specified"); | |
406 | } | |
407 | if (writer == null) { | |
408 | throw new IllegalArgumentException("Writer must be specified"); | |
409 | } | |
42873e30 | 410 | resetParser(); |
6985c572 KL |
411 | mouse1 = false; |
412 | mouse2 = false; | |
413 | mouse3 = false; | |
414 | stopReaderThread = false; | |
415 | this.listener = listener; | |
416 | ||
417 | inputStream = input; | |
418 | this.input = reader; | |
419 | ||
420 | if (setRawMode == true) { | |
421 | sttyRaw(); | |
422 | } | |
423 | this.setRawMode = setRawMode; | |
424 | ||
425 | if (input instanceof SessionInfo) { | |
426 | // This is a TelnetInputStream that exposes window size and | |
427 | // environment variables from the telnet layer. | |
428 | sessionInfo = (SessionInfo) input; | |
429 | } | |
430 | if (sessionInfo == null) { | |
31b7033c KL |
431 | if (setRawMode == true) { |
432 | // Reading right off the tty | |
433 | sessionInfo = new TTYSessionInfo(); | |
434 | } else { | |
435 | sessionInfo = new TSessionInfo(); | |
436 | } | |
6985c572 KL |
437 | } |
438 | ||
439 | this.output = writer; | |
440 | ||
441 | // Enable mouse reporting and metaSendsEscape | |
442 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); | |
443 | this.output.flush(); | |
444 | ||
3e074355 KL |
445 | // Query the screen size |
446 | sessionInfo.queryWindowSize(); | |
447 | setDimensions(sessionInfo.getWindowWidth(), | |
448 | sessionInfo.getWindowHeight()); | |
449 | ||
6985c572 KL |
450 | // Hang onto the window size |
451 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
452 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); | |
453 | ||
15ea4d73 KL |
454 | // Permit RGB colors only if externally requested |
455 | if (System.getProperty("jexer.ECMA48.rgbColor") != null) { | |
456 | if (System.getProperty("jexer.ECMA48.rgbColor").equals("true")) { | |
457 | doRgbColor = true; | |
3e074355 KL |
458 | } else { |
459 | doRgbColor = false; | |
15ea4d73 KL |
460 | } |
461 | } | |
462 | ||
6985c572 KL |
463 | // Spin up the input reader |
464 | eventQueue = new LinkedList<TInputEvent>(); | |
465 | readerThread = new Thread(this); | |
466 | readerThread.start(); | |
42873e30 | 467 | |
42873e30 KL |
468 | // Clear the screen |
469 | this.output.write(clearAll()); | |
470 | this.output.flush(); | |
6985c572 KL |
471 | } |
472 | ||
473 | /** | |
474 | * Constructor sets up state for getEvent(). | |
475 | * | |
476 | * @param listener the object this backend needs to wake up when new | |
477 | * input comes in | |
478 | * @param input the InputStream underlying 'reader'. Its available() | |
479 | * method is used to determine if reader.read() will block or not. | |
480 | * @param reader a Reader connected to the remote user. | |
481 | * @param writer a PrintWriter connected to the remote user. | |
482 | * @throws IllegalArgumentException if input, reader, or writer are null. | |
483 | */ | |
484 | public ECMA48Terminal(final Object listener, final InputStream input, | |
485 | final Reader reader, final PrintWriter writer) { | |
486 | ||
487 | this(listener, input, reader, writer, false); | |
488 | } | |
489 | ||
b1589621 | 490 | /** |
7b5261bc | 491 | * Restore terminal to normal state. |
b1589621 | 492 | */ |
42873e30 | 493 | public void closeTerminal() { |
4328bb42 | 494 | |
7b5261bc KL |
495 | // System.err.println("=== shutdown() ==="); System.err.flush(); |
496 | ||
497 | // Tell the reader thread to stop looking at input | |
498 | stopReaderThread = true; | |
499 | try { | |
500 | readerThread.join(); | |
501 | } catch (InterruptedException e) { | |
502 | e.printStackTrace(); | |
503 | } | |
504 | ||
505 | // Disable mouse reporting and show cursor | |
506 | output.printf("%s%s%s", mouse(false), cursor(true), normal()); | |
507 | output.flush(); | |
508 | ||
509 | if (setRawMode) { | |
510 | sttyCooked(); | |
511 | setRawMode = false; | |
512 | // We don't close System.in/out | |
513 | } else { | |
514 | // Shut down the streams, this should wake up the reader thread | |
515 | // and make it exit. | |
516 | try { | |
517 | if (input != null) { | |
518 | input.close(); | |
519 | input = null; | |
520 | } | |
521 | if (output != null) { | |
522 | output.close(); | |
523 | output = null; | |
524 | } | |
525 | } catch (IOException e) { | |
526 | e.printStackTrace(); | |
527 | } | |
528 | } | |
b1589621 KL |
529 | } |
530 | ||
531 | /** | |
7b5261bc | 532 | * Flush output. |
b1589621 KL |
533 | */ |
534 | public void flush() { | |
7b5261bc | 535 | output.flush(); |
b1589621 KL |
536 | } |
537 | ||
42873e30 KL |
538 | /** |
539 | * Perform a somewhat-optimal rendering of a line. | |
540 | * | |
541 | * @param y row coordinate. 0 is the top-most row. | |
542 | * @param sb StringBuilder to write escape sequences to | |
543 | * @param lastAttr cell attributes from the last call to flushLine | |
544 | */ | |
545 | private void flushLine(final int y, final StringBuilder sb, | |
546 | CellAttributes lastAttr) { | |
547 | ||
548 | int lastX = -1; | |
549 | int textEnd = 0; | |
550 | for (int x = 0; x < width; x++) { | |
551 | Cell lCell = logical[x][y]; | |
552 | if (!lCell.isBlank()) { | |
553 | textEnd = x; | |
554 | } | |
555 | } | |
556 | // Push textEnd to first column beyond the text area | |
557 | textEnd++; | |
558 | ||
559 | // DEBUG | |
560 | // reallyCleared = true; | |
561 | ||
562 | for (int x = 0; x < width; x++) { | |
563 | Cell lCell = logical[x][y]; | |
564 | Cell pCell = physical[x][y]; | |
565 | ||
566 | if (!lCell.equals(pCell) || reallyCleared) { | |
567 | ||
568 | if (debugToStderr) { | |
569 | System.err.printf("\n--\n"); | |
570 | System.err.printf(" Y: %d X: %d\n", y, x); | |
571 | System.err.printf(" lCell: %s\n", lCell); | |
572 | System.err.printf(" pCell: %s\n", pCell); | |
573 | System.err.printf(" ==== \n"); | |
574 | } | |
575 | ||
576 | if (lastAttr == null) { | |
577 | lastAttr = new CellAttributes(); | |
578 | sb.append(normal()); | |
579 | } | |
580 | ||
581 | // Place the cell | |
582 | if ((lastX != (x - 1)) || (lastX == -1)) { | |
583 | // Advancing at least one cell, or the first gotoXY | |
584 | sb.append(gotoXY(x, y)); | |
585 | } | |
586 | ||
587 | assert (lastAttr != null); | |
588 | ||
589 | if ((x == textEnd) && (textEnd < width - 1)) { | |
590 | assert (lCell.isBlank()); | |
591 | ||
592 | for (int i = x; i < width; i++) { | |
593 | assert (logical[i][y].isBlank()); | |
594 | // Physical is always updated | |
595 | physical[i][y].reset(); | |
596 | } | |
597 | ||
598 | // Clear remaining line | |
599 | sb.append(clearRemainingLine()); | |
600 | lastAttr.reset(); | |
601 | return; | |
602 | } | |
603 | ||
604 | // Now emit only the modified attributes | |
605 | if ((lCell.getForeColor() != lastAttr.getForeColor()) | |
606 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
607 | && (lCell.isBold() == lastAttr.isBold()) | |
608 | && (lCell.isReverse() == lastAttr.isReverse()) | |
609 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
610 | && (lCell.isBlink() == lastAttr.isBlink()) | |
611 | ) { | |
612 | // Both colors changed, attributes the same | |
613 | sb.append(color(lCell.isBold(), | |
614 | lCell.getForeColor(), lCell.getBackColor())); | |
615 | ||
616 | if (debugToStderr) { | |
617 | System.err.printf("1 Change only fore/back colors\n"); | |
618 | } | |
619 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) | |
620 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
621 | && (lCell.isBold() != lastAttr.isBold()) | |
622 | && (lCell.isReverse() != lastAttr.isReverse()) | |
623 | && (lCell.isUnderline() != lastAttr.isUnderline()) | |
624 | && (lCell.isBlink() != lastAttr.isBlink()) | |
625 | ) { | |
626 | // Everything is different | |
627 | sb.append(color(lCell.getForeColor(), | |
628 | lCell.getBackColor(), | |
629 | lCell.isBold(), lCell.isReverse(), | |
630 | lCell.isBlink(), | |
631 | lCell.isUnderline())); | |
632 | ||
633 | if (debugToStderr) { | |
634 | System.err.printf("2 Set all attributes\n"); | |
635 | } | |
636 | } else if ((lCell.getForeColor() != lastAttr.getForeColor()) | |
637 | && (lCell.getBackColor() == lastAttr.getBackColor()) | |
638 | && (lCell.isBold() == lastAttr.isBold()) | |
639 | && (lCell.isReverse() == lastAttr.isReverse()) | |
640 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
641 | && (lCell.isBlink() == lastAttr.isBlink()) | |
642 | ) { | |
643 | ||
644 | // Attributes same, foreColor different | |
645 | sb.append(color(lCell.isBold(), | |
646 | lCell.getForeColor(), true)); | |
647 | ||
648 | if (debugToStderr) { | |
649 | System.err.printf("3 Change foreColor\n"); | |
650 | } | |
651 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) | |
652 | && (lCell.getBackColor() != lastAttr.getBackColor()) | |
653 | && (lCell.isBold() == lastAttr.isBold()) | |
654 | && (lCell.isReverse() == lastAttr.isReverse()) | |
655 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
656 | && (lCell.isBlink() == lastAttr.isBlink()) | |
657 | ) { | |
658 | // Attributes same, backColor different | |
659 | sb.append(color(lCell.isBold(), | |
660 | lCell.getBackColor(), false)); | |
661 | ||
662 | if (debugToStderr) { | |
663 | System.err.printf("4 Change backColor\n"); | |
664 | } | |
665 | } else if ((lCell.getForeColor() == lastAttr.getForeColor()) | |
666 | && (lCell.getBackColor() == lastAttr.getBackColor()) | |
667 | && (lCell.isBold() == lastAttr.isBold()) | |
668 | && (lCell.isReverse() == lastAttr.isReverse()) | |
669 | && (lCell.isUnderline() == lastAttr.isUnderline()) | |
670 | && (lCell.isBlink() == lastAttr.isBlink()) | |
671 | ) { | |
672 | ||
673 | // All attributes the same, just print the char | |
674 | // NOP | |
675 | ||
676 | if (debugToStderr) { | |
677 | System.err.printf("5 Only emit character\n"); | |
678 | } | |
679 | } else { | |
680 | // Just reset everything again | |
681 | sb.append(color(lCell.getForeColor(), | |
682 | lCell.getBackColor(), | |
683 | lCell.isBold(), | |
684 | lCell.isReverse(), | |
685 | lCell.isBlink(), | |
686 | lCell.isUnderline())); | |
687 | ||
688 | if (debugToStderr) { | |
689 | System.err.printf("6 Change all attributes\n"); | |
690 | } | |
691 | } | |
692 | // Emit the character | |
693 | sb.append(lCell.getChar()); | |
694 | ||
695 | // Save the last rendered cell | |
696 | lastX = x; | |
697 | lastAttr.setTo(lCell); | |
698 | ||
699 | // Physical is always updated | |
700 | physical[x][y].setTo(lCell); | |
701 | ||
702 | } // if (!lCell.equals(pCell) || (reallyCleared == true)) | |
703 | ||
704 | } // for (int x = 0; x < width; x++) | |
705 | } | |
706 | ||
707 | /** | |
708 | * Render the screen to a string that can be emitted to something that | |
709 | * knows how to process ECMA-48/ANSI X3.64 escape sequences. | |
710 | * | |
711 | * @return escape sequences string that provides the updates to the | |
712 | * physical screen | |
713 | */ | |
714 | private String flushString() { | |
715 | if (!dirty) { | |
716 | assert (!reallyCleared); | |
717 | return ""; | |
718 | } | |
719 | ||
720 | CellAttributes attr = null; | |
721 | ||
722 | StringBuilder sb = new StringBuilder(); | |
723 | if (reallyCleared) { | |
724 | attr = new CellAttributes(); | |
725 | sb.append(clearAll()); | |
726 | } | |
727 | ||
728 | for (int y = 0; y < height; y++) { | |
729 | flushLine(y, sb, attr); | |
730 | } | |
731 | ||
732 | dirty = false; | |
733 | reallyCleared = false; | |
734 | ||
735 | String result = sb.toString(); | |
736 | if (debugToStderr) { | |
737 | System.err.printf("flushString(): %s\n", result); | |
738 | } | |
739 | return result; | |
740 | } | |
741 | ||
742 | /** | |
743 | * Push the logical screen to the physical device. | |
744 | */ | |
745 | @Override | |
746 | public void flushPhysical() { | |
747 | String result = flushString(); | |
748 | if ((cursorVisible) | |
fe0770f9 KL |
749 | && (cursorY >= 0) |
750 | && (cursorX >= 0) | |
42873e30 KL |
751 | && (cursorY <= height - 1) |
752 | && (cursorX <= width - 1) | |
753 | ) { | |
754 | result += cursor(true); | |
755 | result += gotoXY(cursorX, cursorY); | |
756 | } else { | |
757 | result += cursor(false); | |
758 | } | |
759 | output.write(result); | |
760 | flush(); | |
761 | } | |
762 | ||
763 | /** | |
764 | * Set the window title. | |
765 | * | |
766 | * @param title the new title | |
767 | */ | |
768 | public void setTitle(final String title) { | |
769 | output.write(getSetTitleString(title)); | |
770 | flush(); | |
771 | } | |
772 | ||
b1589621 | 773 | /** |
7b5261bc | 774 | * Reset keyboard/mouse input parser. |
b1589621 | 775 | */ |
42873e30 | 776 | private void resetParser() { |
7b5261bc KL |
777 | state = ParseState.GROUND; |
778 | params = new ArrayList<String>(); | |
7b5261bc KL |
779 | params.clear(); |
780 | params.add(""); | |
b1589621 KL |
781 | } |
782 | ||
783 | /** | |
784 | * Produce a control character or one of the special ones (ENTER, TAB, | |
7b5261bc | 785 | * etc.). |
b1589621 KL |
786 | * |
787 | * @param ch Unicode code point | |
b299e69c | 788 | * @param alt if true, set alt on the TKeypress |
7b5261bc | 789 | * @return one TKeypress event, either a control character (e.g. isKey == |
b1589621 KL |
790 | * false, ch == 'A', ctrl == true), or a special key (e.g. isKey == true, |
791 | * fnKey == ESC) | |
792 | */ | |
b299e69c | 793 | private TKeypressEvent controlChar(final char ch, final boolean alt) { |
7b5261bc KL |
794 | // System.err.printf("controlChar: %02x\n", ch); |
795 | ||
796 | switch (ch) { | |
797 | case 0x0D: | |
798 | // Carriage return --> ENTER | |
b299e69c | 799 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
800 | case 0x0A: |
801 | // Linefeed --> ENTER | |
b299e69c | 802 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
803 | case 0x1B: |
804 | // ESC | |
b299e69c | 805 | return new TKeypressEvent(kbEsc, alt, false, false); |
7b5261bc KL |
806 | case '\t': |
807 | // TAB | |
b299e69c | 808 | return new TKeypressEvent(kbTab, alt, false, false); |
7b5261bc KL |
809 | default: |
810 | // Make all other control characters come back as the alphabetic | |
811 | // character with the ctrl field set. So SOH would be 'A' + | |
812 | // ctrl. | |
b299e69c KL |
813 | return new TKeypressEvent(false, 0, (char)(ch + 0x40), |
814 | alt, true, false); | |
7b5261bc | 815 | } |
b1589621 KL |
816 | } |
817 | ||
818 | /** | |
819 | * Produce special key from CSI Pn ; Pm ; ... ~ | |
820 | * | |
821 | * @return one KEYPRESS event representing a special key | |
822 | */ | |
823 | private TInputEvent csiFnKey() { | |
7b5261bc | 824 | int key = 0; |
7b5261bc KL |
825 | if (params.size() > 0) { |
826 | key = Integer.parseInt(params.get(0)); | |
827 | } | |
b299e69c KL |
828 | boolean alt = false; |
829 | boolean ctrl = false; | |
830 | boolean shift = false; | |
32437017 KL |
831 | if (params.size() > 1) { |
832 | shift = csiIsShift(params.get(1)); | |
833 | alt = csiIsAlt(params.get(1)); | |
834 | ctrl = csiIsCtrl(params.get(1)); | |
b299e69c | 835 | } |
d4a29741 | 836 | |
b299e69c KL |
837 | switch (key) { |
838 | case 1: | |
839 | return new TKeypressEvent(kbHome, alt, ctrl, shift); | |
840 | case 2: | |
841 | return new TKeypressEvent(kbIns, alt, ctrl, shift); | |
842 | case 3: | |
843 | return new TKeypressEvent(kbDel, alt, ctrl, shift); | |
844 | case 4: | |
845 | return new TKeypressEvent(kbEnd, alt, ctrl, shift); | |
846 | case 5: | |
847 | return new TKeypressEvent(kbPgUp, alt, ctrl, shift); | |
848 | case 6: | |
849 | return new TKeypressEvent(kbPgDn, alt, ctrl, shift); | |
850 | case 15: | |
851 | return new TKeypressEvent(kbF5, alt, ctrl, shift); | |
852 | case 17: | |
853 | return new TKeypressEvent(kbF6, alt, ctrl, shift); | |
854 | case 18: | |
855 | return new TKeypressEvent(kbF7, alt, ctrl, shift); | |
856 | case 19: | |
857 | return new TKeypressEvent(kbF8, alt, ctrl, shift); | |
858 | case 20: | |
859 | return new TKeypressEvent(kbF9, alt, ctrl, shift); | |
860 | case 21: | |
861 | return new TKeypressEvent(kbF10, alt, ctrl, shift); | |
862 | case 23: | |
863 | return new TKeypressEvent(kbF11, alt, ctrl, shift); | |
864 | case 24: | |
865 | return new TKeypressEvent(kbF12, alt, ctrl, shift); | |
7b5261bc KL |
866 | default: |
867 | // Unknown | |
868 | return null; | |
869 | } | |
b1589621 KL |
870 | } |
871 | ||
872 | /** | |
873 | * Produce mouse events based on "Any event tracking" and UTF-8 | |
874 | * coordinates. See | |
875 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
876 | * | |
877 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
878 | */ | |
879 | private TInputEvent parseMouse() { | |
7b5261bc KL |
880 | int buttons = params.get(0).charAt(0) - 32; |
881 | int x = params.get(0).charAt(1) - 32 - 1; | |
882 | int y = params.get(0).charAt(2) - 32 - 1; | |
883 | ||
884 | // Clamp X and Y to the physical screen coordinates. | |
885 | if (x >= windowResize.getWidth()) { | |
886 | x = windowResize.getWidth() - 1; | |
887 | } | |
888 | if (y >= windowResize.getHeight()) { | |
889 | y = windowResize.getHeight() - 1; | |
890 | } | |
891 | ||
d4a29741 KL |
892 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
893 | boolean eventMouse1 = false; | |
894 | boolean eventMouse2 = false; | |
895 | boolean eventMouse3 = false; | |
896 | boolean eventMouseWheelUp = false; | |
897 | boolean eventMouseWheelDown = false; | |
7b5261bc KL |
898 | |
899 | // System.err.printf("buttons: %04x\r\n", buttons); | |
900 | ||
901 | switch (buttons) { | |
902 | case 0: | |
d4a29741 | 903 | eventMouse1 = true; |
7b5261bc KL |
904 | mouse1 = true; |
905 | break; | |
906 | case 1: | |
d4a29741 | 907 | eventMouse2 = true; |
7b5261bc KL |
908 | mouse2 = true; |
909 | break; | |
910 | case 2: | |
d4a29741 | 911 | eventMouse3 = true; |
7b5261bc KL |
912 | mouse3 = true; |
913 | break; | |
914 | case 3: | |
915 | // Release or Move | |
916 | if (!mouse1 && !mouse2 && !mouse3) { | |
d4a29741 | 917 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc | 918 | } else { |
d4a29741 | 919 | eventType = TMouseEvent.Type.MOUSE_UP; |
7b5261bc KL |
920 | } |
921 | if (mouse1) { | |
922 | mouse1 = false; | |
d4a29741 | 923 | eventMouse1 = true; |
7b5261bc KL |
924 | } |
925 | if (mouse2) { | |
926 | mouse2 = false; | |
d4a29741 | 927 | eventMouse2 = true; |
7b5261bc KL |
928 | } |
929 | if (mouse3) { | |
930 | mouse3 = false; | |
d4a29741 | 931 | eventMouse3 = true; |
7b5261bc KL |
932 | } |
933 | break; | |
934 | ||
935 | case 32: | |
936 | // Dragging with mouse1 down | |
d4a29741 | 937 | eventMouse1 = true; |
7b5261bc | 938 | mouse1 = true; |
d4a29741 | 939 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
940 | break; |
941 | ||
942 | case 33: | |
943 | // Dragging with mouse2 down | |
d4a29741 | 944 | eventMouse2 = true; |
7b5261bc | 945 | mouse2 = true; |
d4a29741 | 946 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
947 | break; |
948 | ||
949 | case 34: | |
950 | // Dragging with mouse3 down | |
d4a29741 | 951 | eventMouse3 = true; |
7b5261bc | 952 | mouse3 = true; |
d4a29741 | 953 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
954 | break; |
955 | ||
956 | case 96: | |
957 | // Dragging with mouse2 down after wheelUp | |
d4a29741 | 958 | eventMouse2 = true; |
7b5261bc | 959 | mouse2 = true; |
d4a29741 | 960 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
961 | break; |
962 | ||
963 | case 97: | |
964 | // Dragging with mouse2 down after wheelDown | |
d4a29741 | 965 | eventMouse2 = true; |
7b5261bc | 966 | mouse2 = true; |
d4a29741 | 967 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
968 | break; |
969 | ||
970 | case 64: | |
d4a29741 | 971 | eventMouseWheelUp = true; |
7b5261bc KL |
972 | break; |
973 | ||
974 | case 65: | |
d4a29741 | 975 | eventMouseWheelDown = true; |
7b5261bc KL |
976 | break; |
977 | ||
978 | default: | |
979 | // Unknown, just make it motion | |
d4a29741 | 980 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
981 | break; |
982 | } | |
d4a29741 KL |
983 | return new TMouseEvent(eventType, x, y, x, y, |
984 | eventMouse1, eventMouse2, eventMouse3, | |
985 | eventMouseWheelUp, eventMouseWheelDown); | |
b1589621 KL |
986 | } |
987 | ||
b5f2a6db KL |
988 | /** |
989 | * Produce mouse events based on "Any event tracking" and SGR | |
990 | * coordinates. See | |
991 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
992 | * | |
993 | * @param release if true, this was a release ('m') | |
994 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
995 | */ | |
996 | private TInputEvent parseMouseSGR(final boolean release) { | |
997 | // SGR extended coordinates - mode 1006 | |
998 | if (params.size() < 3) { | |
999 | // Invalid position, bail out. | |
1000 | return null; | |
1001 | } | |
1002 | int buttons = Integer.parseInt(params.get(0)); | |
1003 | int x = Integer.parseInt(params.get(1)) - 1; | |
1004 | int y = Integer.parseInt(params.get(2)) - 1; | |
1005 | ||
1006 | // Clamp X and Y to the physical screen coordinates. | |
1007 | if (x >= windowResize.getWidth()) { | |
1008 | x = windowResize.getWidth() - 1; | |
1009 | } | |
1010 | if (y >= windowResize.getHeight()) { | |
1011 | y = windowResize.getHeight() - 1; | |
1012 | } | |
1013 | ||
1014 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; | |
1015 | boolean eventMouse1 = false; | |
1016 | boolean eventMouse2 = false; | |
1017 | boolean eventMouse3 = false; | |
1018 | boolean eventMouseWheelUp = false; | |
1019 | boolean eventMouseWheelDown = false; | |
1020 | ||
1021 | if (release) { | |
1022 | eventType = TMouseEvent.Type.MOUSE_UP; | |
1023 | } | |
1024 | ||
1025 | switch (buttons) { | |
1026 | case 0: | |
1027 | eventMouse1 = true; | |
1028 | break; | |
1029 | case 1: | |
1030 | eventMouse2 = true; | |
1031 | break; | |
1032 | case 2: | |
1033 | eventMouse3 = true; | |
1034 | break; | |
1035 | case 35: | |
1036 | // Motion only, no buttons down | |
1037 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1038 | break; | |
1039 | ||
1040 | case 32: | |
1041 | // Dragging with mouse1 down | |
1042 | eventMouse1 = true; | |
1043 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1044 | break; | |
1045 | ||
1046 | case 33: | |
1047 | // Dragging with mouse2 down | |
1048 | eventMouse2 = true; | |
1049 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1050 | break; | |
1051 | ||
1052 | case 34: | |
1053 | // Dragging with mouse3 down | |
1054 | eventMouse3 = true; | |
1055 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1056 | break; | |
1057 | ||
1058 | case 96: | |
1059 | // Dragging with mouse2 down after wheelUp | |
1060 | eventMouse2 = true; | |
1061 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1062 | break; | |
1063 | ||
1064 | case 97: | |
1065 | // Dragging with mouse2 down after wheelDown | |
1066 | eventMouse2 = true; | |
1067 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1068 | break; | |
1069 | ||
1070 | case 64: | |
1071 | eventMouseWheelUp = true; | |
1072 | break; | |
1073 | ||
1074 | case 65: | |
1075 | eventMouseWheelDown = true; | |
1076 | break; | |
1077 | ||
1078 | default: | |
1079 | // Unknown, bail out | |
1080 | return null; | |
1081 | } | |
1082 | return new TMouseEvent(eventType, x, y, x, y, | |
1083 | eventMouse1, eventMouse2, eventMouse3, | |
1084 | eventMouseWheelUp, eventMouseWheelDown); | |
1085 | } | |
1086 | ||
b1589621 | 1087 | /** |
05dbb28d | 1088 | * Return any events in the IO queue. |
b1589621 | 1089 | * |
623a1bd1 | 1090 | * @param queue list to append new events to |
05dbb28d | 1091 | */ |
7b5261bc KL |
1092 | public void getEvents(final List<TInputEvent> queue) { |
1093 | synchronized (eventQueue) { | |
1094 | if (eventQueue.size() > 0) { | |
8e688b92 KL |
1095 | synchronized (queue) { |
1096 | queue.addAll(eventQueue); | |
1097 | } | |
7b5261bc KL |
1098 | eventQueue.clear(); |
1099 | } | |
1100 | } | |
05dbb28d KL |
1101 | } |
1102 | ||
1103 | /** | |
623a1bd1 | 1104 | * Return any events in the IO queue due to timeout. |
b1589621 | 1105 | * |
623a1bd1 | 1106 | * @param queue list to append new events to |
b1589621 | 1107 | */ |
a83fea2b KL |
1108 | private void getIdleEvents(final List<TInputEvent> queue) { |
1109 | Date now = new Date(); | |
7b5261bc KL |
1110 | |
1111 | // Check for new window size | |
a83fea2b KL |
1112 | long windowSizeDelay = now.getTime() - windowSizeTime; |
1113 | if (windowSizeDelay > 1000) { | |
1114 | sessionInfo.queryWindowSize(); | |
1115 | int newWidth = sessionInfo.getWindowWidth(); | |
1116 | int newHeight = sessionInfo.getWindowHeight(); | |
1117 | if ((newWidth != windowResize.getWidth()) | |
1118 | || (newHeight != windowResize.getHeight()) | |
1119 | ) { | |
1120 | TResizeEvent event = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1121 | newWidth, newHeight); | |
1122 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1123 | newWidth, newHeight); | |
1124 | queue.add(event); | |
7b5261bc | 1125 | } |
a83fea2b | 1126 | windowSizeTime = now.getTime(); |
7b5261bc KL |
1127 | } |
1128 | ||
a83fea2b KL |
1129 | // ESCDELAY type timeout |
1130 | if (state == ParseState.ESCAPE) { | |
1131 | long escDelay = now.getTime() - escapeTime; | |
1132 | if (escDelay > 100) { | |
1133 | // After 0.1 seconds, assume a true escape character | |
1134 | queue.add(controlChar((char)0x1B, false)); | |
42873e30 | 1135 | resetParser(); |
7b5261bc KL |
1136 | } |
1137 | } | |
b1589621 KL |
1138 | } |
1139 | ||
32437017 KL |
1140 | /** |
1141 | * Returns true if the CSI parameter for a keyboard command means that | |
1142 | * shift was down. | |
1143 | */ | |
1144 | private boolean csiIsShift(final String x) { | |
1145 | if ((x.equals("2")) | |
1146 | || (x.equals("4")) | |
1147 | || (x.equals("6")) | |
1148 | || (x.equals("8")) | |
1149 | ) { | |
1150 | return true; | |
1151 | } | |
1152 | return false; | |
1153 | } | |
1154 | ||
1155 | /** | |
1156 | * Returns true if the CSI parameter for a keyboard command means that | |
1157 | * alt was down. | |
1158 | */ | |
1159 | private boolean csiIsAlt(final String x) { | |
1160 | if ((x.equals("3")) | |
1161 | || (x.equals("4")) | |
1162 | || (x.equals("7")) | |
1163 | || (x.equals("8")) | |
1164 | ) { | |
1165 | return true; | |
1166 | } | |
1167 | return false; | |
1168 | } | |
1169 | ||
1170 | /** | |
1171 | * Returns true if the CSI parameter for a keyboard command means that | |
1172 | * ctrl was down. | |
1173 | */ | |
1174 | private boolean csiIsCtrl(final String x) { | |
1175 | if ((x.equals("5")) | |
1176 | || (x.equals("6")) | |
1177 | || (x.equals("7")) | |
1178 | || (x.equals("8")) | |
1179 | ) { | |
1180 | return true; | |
1181 | } | |
1182 | return false; | |
1183 | } | |
1184 | ||
b1589621 KL |
1185 | /** |
1186 | * Parses the next character of input to see if an InputEvent is | |
1187 | * fully here. | |
1188 | * | |
623a1bd1 | 1189 | * @param events list to append new events to |
05dbb28d | 1190 | * @param ch Unicode code point |
b1589621 | 1191 | */ |
7b5261bc KL |
1192 | private void processChar(final List<TInputEvent> events, final char ch) { |
1193 | ||
7b5261bc | 1194 | // ESCDELAY type timeout |
b299e69c | 1195 | Date now = new Date(); |
7b5261bc KL |
1196 | if (state == ParseState.ESCAPE) { |
1197 | long escDelay = now.getTime() - escapeTime; | |
1198 | if (escDelay > 250) { | |
1199 | // After 0.25 seconds, assume a true escape character | |
b299e69c | 1200 | events.add(controlChar((char)0x1B, false)); |
42873e30 | 1201 | resetParser(); |
7b5261bc KL |
1202 | } |
1203 | } | |
1204 | ||
b299e69c KL |
1205 | // TKeypress fields |
1206 | boolean ctrl = false; | |
1207 | boolean alt = false; | |
1208 | boolean shift = false; | |
b299e69c | 1209 | |
7b5261bc KL |
1210 | // System.err.printf("state: %s ch %c\r\n", state, ch); |
1211 | ||
1212 | switch (state) { | |
1213 | case GROUND: | |
1214 | ||
1215 | if (ch == 0x1B) { | |
1216 | state = ParseState.ESCAPE; | |
1217 | escapeTime = now.getTime(); | |
1218 | return; | |
1219 | } | |
1220 | ||
1221 | if (ch <= 0x1F) { | |
1222 | // Control character | |
b299e69c | 1223 | events.add(controlChar(ch, false)); |
42873e30 | 1224 | resetParser(); |
7b5261bc KL |
1225 | return; |
1226 | } | |
1227 | ||
1228 | if (ch >= 0x20) { | |
1229 | // Normal character | |
b299e69c KL |
1230 | events.add(new TKeypressEvent(false, 0, ch, |
1231 | false, false, false)); | |
42873e30 | 1232 | resetParser(); |
7b5261bc KL |
1233 | return; |
1234 | } | |
1235 | ||
1236 | break; | |
1237 | ||
1238 | case ESCAPE: | |
1239 | if (ch <= 0x1F) { | |
1240 | // ALT-Control character | |
b299e69c | 1241 | events.add(controlChar(ch, true)); |
42873e30 | 1242 | resetParser(); |
7b5261bc KL |
1243 | return; |
1244 | } | |
1245 | ||
1246 | if (ch == 'O') { | |
1247 | // This will be one of the function keys | |
1248 | state = ParseState.ESCAPE_INTERMEDIATE; | |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | // '[' goes to CSI_ENTRY | |
1253 | if (ch == '[') { | |
1254 | state = ParseState.CSI_ENTRY; | |
1255 | return; | |
1256 | } | |
1257 | ||
1258 | // Everything else is assumed to be Alt-keystroke | |
7b5261bc | 1259 | if ((ch >= 'A') && (ch <= 'Z')) { |
b299e69c | 1260 | shift = true; |
7b5261bc | 1261 | } |
b299e69c KL |
1262 | alt = true; |
1263 | events.add(new TKeypressEvent(false, 0, ch, alt, ctrl, shift)); | |
42873e30 | 1264 | resetParser(); |
7b5261bc KL |
1265 | return; |
1266 | ||
1267 | case ESCAPE_INTERMEDIATE: | |
1268 | if ((ch >= 'P') && (ch <= 'S')) { | |
1269 | // Function key | |
7b5261bc KL |
1270 | switch (ch) { |
1271 | case 'P': | |
b299e69c | 1272 | events.add(new TKeypressEvent(kbF1)); |
7b5261bc KL |
1273 | break; |
1274 | case 'Q': | |
b299e69c | 1275 | events.add(new TKeypressEvent(kbF2)); |
7b5261bc KL |
1276 | break; |
1277 | case 'R': | |
b299e69c | 1278 | events.add(new TKeypressEvent(kbF3)); |
7b5261bc KL |
1279 | break; |
1280 | case 'S': | |
b299e69c | 1281 | events.add(new TKeypressEvent(kbF4)); |
7b5261bc KL |
1282 | break; |
1283 | default: | |
1284 | break; | |
1285 | } | |
42873e30 | 1286 | resetParser(); |
7b5261bc KL |
1287 | return; |
1288 | } | |
1289 | ||
1290 | // Unknown keystroke, ignore | |
42873e30 | 1291 | resetParser(); |
7b5261bc KL |
1292 | return; |
1293 | ||
1294 | case CSI_ENTRY: | |
1295 | // Numbers - parameter values | |
1296 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
1297 | params.set(params.size() - 1, |
1298 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
1299 | state = ParseState.CSI_PARAM; |
1300 | return; | |
1301 | } | |
1302 | // Parameter separator | |
1303 | if (ch == ';') { | |
a83fea2b | 1304 | params.add(""); |
7b5261bc KL |
1305 | return; |
1306 | } | |
1307 | ||
1308 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
1309 | switch (ch) { | |
1310 | case 'A': | |
1311 | // Up | |
b299e69c | 1312 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 1313 | resetParser(); |
7b5261bc KL |
1314 | return; |
1315 | case 'B': | |
1316 | // Down | |
b299e69c | 1317 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 1318 | resetParser(); |
7b5261bc KL |
1319 | return; |
1320 | case 'C': | |
1321 | // Right | |
b299e69c | 1322 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 1323 | resetParser(); |
7b5261bc KL |
1324 | return; |
1325 | case 'D': | |
1326 | // Left | |
b299e69c | 1327 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 1328 | resetParser(); |
7b5261bc KL |
1329 | return; |
1330 | case 'H': | |
1331 | // Home | |
b299e69c | 1332 | events.add(new TKeypressEvent(kbHome)); |
42873e30 | 1333 | resetParser(); |
7b5261bc KL |
1334 | return; |
1335 | case 'F': | |
1336 | // End | |
b299e69c | 1337 | events.add(new TKeypressEvent(kbEnd)); |
42873e30 | 1338 | resetParser(); |
7b5261bc KL |
1339 | return; |
1340 | case 'Z': | |
1341 | // CBT - Cursor backward X tab stops (default 1) | |
b299e69c | 1342 | events.add(new TKeypressEvent(kbBackTab)); |
42873e30 | 1343 | resetParser(); |
7b5261bc KL |
1344 | return; |
1345 | case 'M': | |
1346 | // Mouse position | |
1347 | state = ParseState.MOUSE; | |
1348 | return; | |
b5f2a6db KL |
1349 | case '<': |
1350 | // Mouse position, SGR (1006) coordinates | |
1351 | state = ParseState.MOUSE_SGR; | |
1352 | return; | |
7b5261bc KL |
1353 | default: |
1354 | break; | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | // Unknown keystroke, ignore | |
42873e30 | 1359 | resetParser(); |
7b5261bc KL |
1360 | return; |
1361 | ||
b5f2a6db KL |
1362 | case MOUSE_SGR: |
1363 | // Numbers - parameter values | |
1364 | if ((ch >= '0') && (ch <= '9')) { | |
1365 | params.set(params.size() - 1, | |
1366 | params.get(params.size() - 1) + ch); | |
1367 | return; | |
1368 | } | |
1369 | // Parameter separator | |
1370 | if (ch == ';') { | |
1371 | params.add(""); | |
1372 | return; | |
1373 | } | |
1374 | ||
1375 | switch (ch) { | |
1376 | case 'M': | |
1377 | // Generate a mouse press event | |
1378 | TInputEvent event = parseMouseSGR(false); | |
1379 | if (event != null) { | |
1380 | events.add(event); | |
1381 | } | |
42873e30 | 1382 | resetParser(); |
b5f2a6db KL |
1383 | return; |
1384 | case 'm': | |
1385 | // Generate a mouse release event | |
1386 | event = parseMouseSGR(true); | |
1387 | if (event != null) { | |
1388 | events.add(event); | |
1389 | } | |
42873e30 | 1390 | resetParser(); |
b5f2a6db KL |
1391 | return; |
1392 | default: | |
1393 | break; | |
1394 | } | |
1395 | ||
1396 | // Unknown keystroke, ignore | |
42873e30 | 1397 | resetParser(); |
b5f2a6db KL |
1398 | return; |
1399 | ||
7b5261bc KL |
1400 | case CSI_PARAM: |
1401 | // Numbers - parameter values | |
1402 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
1403 | params.set(params.size() - 1, |
1404 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
1405 | state = ParseState.CSI_PARAM; |
1406 | return; | |
1407 | } | |
1408 | // Parameter separator | |
1409 | if (ch == ';') { | |
92554d64 | 1410 | params.add(""); |
7b5261bc KL |
1411 | return; |
1412 | } | |
1413 | ||
1414 | if (ch == '~') { | |
1415 | events.add(csiFnKey()); | |
42873e30 | 1416 | resetParser(); |
7b5261bc KL |
1417 | return; |
1418 | } | |
1419 | ||
1420 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
1421 | switch (ch) { | |
1422 | case 'A': | |
1423 | // Up | |
7b5261bc | 1424 | if (params.size() > 1) { |
32437017 KL |
1425 | shift = csiIsShift(params.get(1)); |
1426 | alt = csiIsAlt(params.get(1)); | |
1427 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1428 | } |
b299e69c | 1429 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 1430 | resetParser(); |
7b5261bc KL |
1431 | return; |
1432 | case 'B': | |
1433 | // Down | |
7b5261bc | 1434 | if (params.size() > 1) { |
32437017 KL |
1435 | shift = csiIsShift(params.get(1)); |
1436 | alt = csiIsAlt(params.get(1)); | |
1437 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1438 | } |
b299e69c | 1439 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 1440 | resetParser(); |
7b5261bc KL |
1441 | return; |
1442 | case 'C': | |
1443 | // Right | |
7b5261bc | 1444 | if (params.size() > 1) { |
32437017 KL |
1445 | shift = csiIsShift(params.get(1)); |
1446 | alt = csiIsAlt(params.get(1)); | |
1447 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1448 | } |
b299e69c | 1449 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 1450 | resetParser(); |
7b5261bc KL |
1451 | return; |
1452 | case 'D': | |
1453 | // Left | |
7b5261bc | 1454 | if (params.size() > 1) { |
32437017 KL |
1455 | shift = csiIsShift(params.get(1)); |
1456 | alt = csiIsAlt(params.get(1)); | |
1457 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1458 | } |
b299e69c | 1459 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 1460 | resetParser(); |
7b5261bc | 1461 | return; |
32437017 KL |
1462 | case 'H': |
1463 | // Home | |
1464 | if (params.size() > 1) { | |
1465 | shift = csiIsShift(params.get(1)); | |
1466 | alt = csiIsAlt(params.get(1)); | |
1467 | ctrl = csiIsCtrl(params.get(1)); | |
1468 | } | |
1469 | events.add(new TKeypressEvent(kbHome, alt, ctrl, shift)); | |
42873e30 | 1470 | resetParser(); |
32437017 KL |
1471 | return; |
1472 | case 'F': | |
1473 | // End | |
1474 | if (params.size() > 1) { | |
1475 | shift = csiIsShift(params.get(1)); | |
1476 | alt = csiIsAlt(params.get(1)); | |
1477 | ctrl = csiIsCtrl(params.get(1)); | |
1478 | } | |
1479 | events.add(new TKeypressEvent(kbEnd, alt, ctrl, shift)); | |
42873e30 | 1480 | resetParser(); |
32437017 | 1481 | return; |
7b5261bc KL |
1482 | default: |
1483 | break; | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | // Unknown keystroke, ignore | |
42873e30 | 1488 | resetParser(); |
7b5261bc KL |
1489 | return; |
1490 | ||
1491 | case MOUSE: | |
92554d64 | 1492 | params.set(0, params.get(params.size() - 1) + ch); |
7b5261bc KL |
1493 | if (params.get(0).length() == 3) { |
1494 | // We have enough to generate a mouse event | |
1495 | events.add(parseMouse()); | |
42873e30 | 1496 | resetParser(); |
7b5261bc KL |
1497 | } |
1498 | return; | |
1499 | ||
1500 | default: | |
1501 | break; | |
1502 | } | |
1503 | ||
1504 | // This "should" be impossible to reach | |
1505 | return; | |
b1589621 KL |
1506 | } |
1507 | ||
1508 | /** | |
05dbb28d KL |
1509 | * Tell (u)xterm that we want alt- keystrokes to send escape + character |
1510 | * rather than set the 8th bit. Anyone who wants UTF8 should want this | |
1511 | * enabled. | |
b1589621 | 1512 | * |
05dbb28d KL |
1513 | * @param on if true, enable metaSendsEscape |
1514 | * @return the string to emit to xterm | |
b1589621 | 1515 | */ |
b5f2a6db | 1516 | private String xtermMetaSendsEscape(final boolean on) { |
7b5261bc KL |
1517 | if (on) { |
1518 | return "\033[?1036h\033[?1034l"; | |
1519 | } | |
1520 | return "\033[?1036l"; | |
b1589621 KL |
1521 | } |
1522 | ||
55d2b2c2 | 1523 | /** |
42873e30 | 1524 | * Create an xterm OSC sequence to change the window title. |
55d2b2c2 KL |
1525 | * |
1526 | * @param title the new title | |
1527 | * @return the string to emit to xterm | |
1528 | */ | |
42873e30 | 1529 | private String getSetTitleString(final String title) { |
55d2b2c2 KL |
1530 | return "\033]2;" + title + "\007"; |
1531 | } | |
1532 | ||
b1589621 | 1533 | /** |
42873e30 | 1534 | * Create a SGR parameter sequence for a single color change. |
b1589621 | 1535 | * |
15ea4d73 | 1536 | * @param bold if true, set bold |
05dbb28d KL |
1537 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
1538 | * @param foreground if true, this is a foreground color | |
1539 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1540 | * e.g. "\033[42m" | |
b1589621 | 1541 | */ |
42873e30 | 1542 | private String color(final boolean bold, final Color color, |
15ea4d73 KL |
1543 | final boolean foreground) { |
1544 | return color(color, foreground, true) + | |
1545 | rgbColor(bold, color, foreground); | |
1546 | } | |
1547 | ||
1548 | /** | |
1549 | * Create a T.416 RGB parameter sequence for a single color change. | |
1550 | * | |
1551 | * @param bold if true, set bold | |
1552 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants | |
1553 | * @param foreground if true, this is a foreground color | |
1554 | * @return the string to emit to an xterm terminal with RGB support, | |
1555 | * e.g. "\033[38;2;RR;GG;BBm" | |
1556 | */ | |
1557 | private String rgbColor(final boolean bold, final Color color, | |
1558 | final boolean foreground) { | |
1559 | if (doRgbColor == false) { | |
1560 | return ""; | |
1561 | } | |
1562 | StringBuilder sb = new StringBuilder("\033["); | |
1563 | if (bold) { | |
1564 | // Bold implies foreground only | |
1565 | sb.append("38;2;"); | |
1566 | if (color.equals(Color.BLACK)) { | |
6ba187ac | 1567 | sb.append("84;84;84"); |
15ea4d73 | 1568 | } else if (color.equals(Color.RED)) { |
6ba187ac | 1569 | sb.append("252;84;84"); |
15ea4d73 | 1570 | } else if (color.equals(Color.GREEN)) { |
6ba187ac | 1571 | sb.append("84;252;84"); |
15ea4d73 | 1572 | } else if (color.equals(Color.YELLOW)) { |
6ba187ac | 1573 | sb.append("252;252;84"); |
15ea4d73 | 1574 | } else if (color.equals(Color.BLUE)) { |
6ba187ac | 1575 | sb.append("84;84;252"); |
15ea4d73 | 1576 | } else if (color.equals(Color.MAGENTA)) { |
6ba187ac | 1577 | sb.append("252;84;252"); |
15ea4d73 | 1578 | } else if (color.equals(Color.CYAN)) { |
6ba187ac | 1579 | sb.append("84;252;252"); |
15ea4d73 KL |
1580 | } else if (color.equals(Color.WHITE)) { |
1581 | sb.append("252;252;252"); | |
1582 | } | |
1583 | } else { | |
1584 | if (foreground) { | |
1585 | sb.append("38;2;"); | |
1586 | } else { | |
1587 | sb.append("48;2;"); | |
1588 | } | |
1589 | if (color.equals(Color.BLACK)) { | |
1590 | sb.append("0;0;0"); | |
1591 | } else if (color.equals(Color.RED)) { | |
1592 | sb.append("168;0;0"); | |
1593 | } else if (color.equals(Color.GREEN)) { | |
1594 | sb.append("0;168;0"); | |
1595 | } else if (color.equals(Color.YELLOW)) { | |
6ba187ac | 1596 | sb.append("168;84;0"); |
15ea4d73 KL |
1597 | } else if (color.equals(Color.BLUE)) { |
1598 | sb.append("0;0;168"); | |
1599 | } else if (color.equals(Color.MAGENTA)) { | |
1600 | sb.append("168;0;168"); | |
1601 | } else if (color.equals(Color.CYAN)) { | |
1602 | sb.append("0;168;168"); | |
1603 | } else if (color.equals(Color.WHITE)) { | |
1604 | sb.append("168;168;168"); | |
1605 | } | |
1606 | } | |
1607 | sb.append("m"); | |
1608 | return sb.toString(); | |
1609 | } | |
1610 | ||
1611 | /** | |
1612 | * Create a T.416 RGB parameter sequence for both foreground and | |
1613 | * background color change. | |
1614 | * | |
1615 | * @param bold if true, set bold | |
1616 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1617 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1618 | * @return the string to emit to an xterm terminal with RGB support, | |
1619 | * e.g. "\033[38;2;RR;GG;BB;48;2;RR;GG;BBm" | |
1620 | */ | |
1621 | private String rgbColor(final boolean bold, final Color foreColor, | |
1622 | final Color backColor) { | |
1623 | if (doRgbColor == false) { | |
1624 | return ""; | |
1625 | } | |
1626 | ||
1627 | return rgbColor(bold, foreColor, true) + | |
1628 | rgbColor(false, backColor, false); | |
b1589621 KL |
1629 | } |
1630 | ||
1631 | /** | |
1632 | * Create a SGR parameter sequence for a single color change. | |
1633 | * | |
05dbb28d KL |
1634 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
1635 | * @param foreground if true, this is a foreground color | |
1636 | * @param header if true, make the full header, otherwise just emit the | |
1637 | * color parameter e.g. "42;" | |
1638 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1639 | * e.g. "\033[42m" | |
b1589621 | 1640 | */ |
b5f2a6db | 1641 | private String color(final Color color, final boolean foreground, |
7b5261bc KL |
1642 | final boolean header) { |
1643 | ||
1644 | int ecmaColor = color.getValue(); | |
1645 | ||
1646 | // Convert Color.* values to SGR numerics | |
1647 | if (foreground) { | |
1648 | ecmaColor += 30; | |
1649 | } else { | |
1650 | ecmaColor += 40; | |
1651 | } | |
1652 | ||
1653 | if (header) { | |
1654 | return String.format("\033[%dm", ecmaColor); | |
1655 | } else { | |
1656 | return String.format("%d;", ecmaColor); | |
1657 | } | |
b1589621 KL |
1658 | } |
1659 | ||
1660 | /** | |
b5f2a6db | 1661 | * Create a SGR parameter sequence for both foreground and background |
42873e30 | 1662 | * color change. |
b1589621 | 1663 | * |
15ea4d73 | 1664 | * @param bold if true, set bold |
05dbb28d KL |
1665 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1666 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1667 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1668 | * e.g. "\033[31;42m" | |
b1589621 | 1669 | */ |
42873e30 | 1670 | private String color(final boolean bold, final Color foreColor, |
15ea4d73 KL |
1671 | final Color backColor) { |
1672 | return color(foreColor, backColor, true) + | |
1673 | rgbColor(bold, foreColor, backColor); | |
b1589621 KL |
1674 | } |
1675 | ||
1676 | /** | |
1677 | * Create a SGR parameter sequence for both foreground and | |
1678 | * background color change. | |
1679 | * | |
05dbb28d KL |
1680 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1681 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1682 | * @param header if true, make the full header, otherwise just emit the | |
1683 | * color parameter e.g. "31;42;" | |
1684 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1685 | * e.g. "\033[31;42m" | |
b1589621 | 1686 | */ |
b5f2a6db | 1687 | private String color(final Color foreColor, final Color backColor, |
7b5261bc | 1688 | final boolean header) { |
b1589621 | 1689 | |
7b5261bc KL |
1690 | int ecmaForeColor = foreColor.getValue(); |
1691 | int ecmaBackColor = backColor.getValue(); | |
b1589621 | 1692 | |
7b5261bc KL |
1693 | // Convert Color.* values to SGR numerics |
1694 | ecmaBackColor += 40; | |
1695 | ecmaForeColor += 30; | |
b1589621 | 1696 | |
7b5261bc KL |
1697 | if (header) { |
1698 | return String.format("\033[%d;%dm", ecmaForeColor, ecmaBackColor); | |
1699 | } else { | |
1700 | return String.format("%d;%d;", ecmaForeColor, ecmaBackColor); | |
1701 | } | |
b1589621 KL |
1702 | } |
1703 | ||
1704 | /** | |
1705 | * Create a SGR parameter sequence for foreground, background, and | |
05dbb28d | 1706 | * several attributes. This sequence first resets all attributes to |
42873e30 | 1707 | * default, then sets attributes as per the parameters. |
b1589621 | 1708 | * |
05dbb28d KL |
1709 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1710 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1711 | * @param bold if true, set bold | |
1712 | * @param reverse if true, set reverse | |
1713 | * @param blink if true, set blink | |
1714 | * @param underline if true, set underline | |
1715 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1716 | * e.g. "\033[0;1;31;42m" | |
b1589621 | 1717 | */ |
42873e30 | 1718 | private String color(final Color foreColor, final Color backColor, |
7b5261bc KL |
1719 | final boolean bold, final boolean reverse, final boolean blink, |
1720 | final boolean underline) { | |
1721 | ||
1722 | int ecmaForeColor = foreColor.getValue(); | |
1723 | int ecmaBackColor = backColor.getValue(); | |
1724 | ||
1725 | // Convert Color.* values to SGR numerics | |
1726 | ecmaBackColor += 40; | |
1727 | ecmaForeColor += 30; | |
1728 | ||
1729 | StringBuilder sb = new StringBuilder(); | |
1730 | if ( bold && reverse && blink && !underline ) { | |
1731 | sb.append("\033[0;1;7;5;"); | |
1732 | } else if ( bold && reverse && !blink && !underline ) { | |
1733 | sb.append("\033[0;1;7;"); | |
1734 | } else if ( !bold && reverse && blink && !underline ) { | |
1735 | sb.append("\033[0;7;5;"); | |
1736 | } else if ( bold && !reverse && blink && !underline ) { | |
1737 | sb.append("\033[0;1;5;"); | |
1738 | } else if ( bold && !reverse && !blink && !underline ) { | |
1739 | sb.append("\033[0;1;"); | |
1740 | } else if ( !bold && reverse && !blink && !underline ) { | |
1741 | sb.append("\033[0;7;"); | |
1742 | } else if ( !bold && !reverse && blink && !underline) { | |
1743 | sb.append("\033[0;5;"); | |
1744 | } else if ( bold && reverse && blink && underline ) { | |
1745 | sb.append("\033[0;1;7;5;4;"); | |
1746 | } else if ( bold && reverse && !blink && underline ) { | |
1747 | sb.append("\033[0;1;7;4;"); | |
1748 | } else if ( !bold && reverse && blink && underline ) { | |
1749 | sb.append("\033[0;7;5;4;"); | |
1750 | } else if ( bold && !reverse && blink && underline ) { | |
1751 | sb.append("\033[0;1;5;4;"); | |
1752 | } else if ( bold && !reverse && !blink && underline ) { | |
1753 | sb.append("\033[0;1;4;"); | |
1754 | } else if ( !bold && reverse && !blink && underline ) { | |
1755 | sb.append("\033[0;7;4;"); | |
1756 | } else if ( !bold && !reverse && blink && underline) { | |
1757 | sb.append("\033[0;5;4;"); | |
1758 | } else if ( !bold && !reverse && !blink && underline) { | |
1759 | sb.append("\033[0;4;"); | |
1760 | } else { | |
1761 | assert (!bold && !reverse && !blink && !underline); | |
1762 | sb.append("\033[0;"); | |
1763 | } | |
1764 | sb.append(String.format("%d;%dm", ecmaForeColor, ecmaBackColor)); | |
8a632d71 KL |
1765 | sb.append(rgbColor(bold, foreColor, backColor)); |
1766 | return sb.toString(); | |
b1589621 KL |
1767 | } |
1768 | ||
b1589621 | 1769 | /** |
42873e30 | 1770 | * Create a SGR parameter sequence to reset to defaults. |
b1589621 | 1771 | * |
05dbb28d KL |
1772 | * @return the string to emit to an ANSI / ECMA-style terminal, |
1773 | * e.g. "\033[0m" | |
b1589621 | 1774 | */ |
42873e30 | 1775 | private String normal() { |
8a632d71 | 1776 | return normal(true) + rgbColor(false, Color.WHITE, Color.BLACK); |
b1589621 KL |
1777 | } |
1778 | ||
1779 | /** | |
1780 | * Create a SGR parameter sequence to reset to defaults. | |
1781 | * | |
05dbb28d KL |
1782 | * @param header if true, make the full header, otherwise just emit the |
1783 | * bare parameter e.g. "0;" | |
1784 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1785 | * e.g. "\033[0m" | |
b1589621 | 1786 | */ |
b5f2a6db | 1787 | private String normal(final boolean header) { |
7b5261bc KL |
1788 | if (header) { |
1789 | return "\033[0;37;40m"; | |
1790 | } | |
1791 | return "0;37;40"; | |
b1589621 KL |
1792 | } |
1793 | ||
b1589621 | 1794 | /** |
42873e30 | 1795 | * Create a SGR parameter sequence for enabling the visible cursor. |
b1589621 | 1796 | * |
05dbb28d KL |
1797 | * @param on if true, turn on cursor |
1798 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 1799 | */ |
42873e30 | 1800 | private String cursor(final boolean on) { |
7b5261bc KL |
1801 | if (on && !cursorOn) { |
1802 | cursorOn = true; | |
1803 | return "\033[?25h"; | |
1804 | } | |
1805 | if (!on && cursorOn) { | |
1806 | cursorOn = false; | |
1807 | return "\033[?25l"; | |
1808 | } | |
1809 | return ""; | |
b1589621 KL |
1810 | } |
1811 | ||
1812 | /** | |
1813 | * Clear the entire screen. Because some terminals use back-color-erase, | |
1814 | * set the color to white-on-black beforehand. | |
1815 | * | |
05dbb28d | 1816 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 1817 | */ |
42873e30 | 1818 | private String clearAll() { |
7b5261bc | 1819 | return "\033[0;37;40m\033[2J"; |
b1589621 KL |
1820 | } |
1821 | ||
1822 | /** | |
1823 | * Clear the line from the cursor (inclusive) to the end of the screen. | |
1824 | * Because some terminals use back-color-erase, set the color to | |
42873e30 | 1825 | * white-on-black beforehand. |
b1589621 | 1826 | * |
05dbb28d | 1827 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 1828 | */ |
42873e30 | 1829 | private String clearRemainingLine() { |
7b5261bc | 1830 | return "\033[0;37;40m\033[K"; |
b1589621 KL |
1831 | } |
1832 | ||
b1589621 | 1833 | /** |
42873e30 | 1834 | * Move the cursor to (x, y). |
b1589621 | 1835 | * |
05dbb28d KL |
1836 | * @param x column coordinate. 0 is the left-most column. |
1837 | * @param y row coordinate. 0 is the top-most row. | |
1838 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 1839 | */ |
42873e30 | 1840 | private String gotoXY(final int x, final int y) { |
7b5261bc | 1841 | return String.format("\033[%d;%dH", y + 1, x + 1); |
b1589621 KL |
1842 | } |
1843 | ||
1844 | /** | |
05dbb28d | 1845 | * Tell (u)xterm that we want to receive mouse events based on "Any event |
b5f2a6db KL |
1846 | * tracking", UTF-8 coordinates, and then SGR coordinates. Ideally we |
1847 | * will end up with SGR coordinates with UTF-8 coordinates as a fallback. | |
1848 | * See | |
b1589621 KL |
1849 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
1850 | * | |
05dbb28d | 1851 | * Note that this also sets the alternate/primary screen buffer. |
b1589621 | 1852 | * |
05dbb28d KL |
1853 | * @param on If true, enable mouse report and use the alternate screen |
1854 | * buffer. If false disable mouse reporting and use the primary screen | |
1855 | * buffer. | |
1856 | * @return the string to emit to xterm | |
b1589621 | 1857 | */ |
b5f2a6db | 1858 | private String mouse(final boolean on) { |
7b5261bc | 1859 | if (on) { |
32437017 | 1860 | return "\033[?1002;1003;1005;1006h\033[?1049h"; |
7b5261bc | 1861 | } |
32437017 | 1862 | return "\033[?1002;1003;1006;1005l\033[?1049l"; |
b1589621 KL |
1863 | } |
1864 | ||
4328bb42 KL |
1865 | /** |
1866 | * Read function runs on a separate thread. | |
1867 | */ | |
1868 | public void run() { | |
7b5261bc KL |
1869 | boolean done = false; |
1870 | // available() will often return > 1, so we need to read in chunks to | |
1871 | // stay caught up. | |
1872 | char [] readBuffer = new char[128]; | |
1873 | List<TInputEvent> events = new LinkedList<TInputEvent>(); | |
1874 | ||
1875 | while (!done && !stopReaderThread) { | |
1876 | try { | |
1877 | // We assume that if inputStream has bytes available, then | |
1878 | // input won't block on read(). | |
1879 | int n = inputStream.available(); | |
1880 | if (n > 0) { | |
1881 | if (readBuffer.length < n) { | |
1882 | // The buffer wasn't big enough, make it huger | |
1883 | readBuffer = new char[readBuffer.length * 2]; | |
1884 | } | |
1885 | ||
bb35d919 | 1886 | int rc = input.read(readBuffer, 0, readBuffer.length); |
7b5261bc KL |
1887 | // System.err.printf("read() %d", rc); System.err.flush(); |
1888 | if (rc == -1) { | |
1889 | // This is EOF | |
1890 | done = true; | |
1891 | } else { | |
1892 | for (int i = 0; i < rc; i++) { | |
1893 | int ch = readBuffer[i]; | |
1894 | processChar(events, (char)ch); | |
9b1afdde KL |
1895 | } |
1896 | getIdleEvents(events); | |
1897 | if (events.size() > 0) { | |
1898 | // Add to the queue for the backend thread to | |
1899 | // be able to obtain. | |
1900 | synchronized (eventQueue) { | |
1901 | eventQueue.addAll(events); | |
1902 | } | |
3e074355 KL |
1903 | if (listener != null) { |
1904 | synchronized (listener) { | |
1905 | listener.notifyAll(); | |
1906 | } | |
7b5261bc | 1907 | } |
9b1afdde | 1908 | events.clear(); |
7b5261bc KL |
1909 | } |
1910 | } | |
1911 | } else { | |
a83fea2b KL |
1912 | getIdleEvents(events); |
1913 | if (events.size() > 0) { | |
1914 | synchronized (eventQueue) { | |
1915 | eventQueue.addAll(events); | |
1916 | } | |
1917 | events.clear(); | |
3e074355 KL |
1918 | if (listener != null) { |
1919 | synchronized (listener) { | |
1920 | listener.notifyAll(); | |
1921 | } | |
92554d64 | 1922 | } |
a83fea2b KL |
1923 | } |
1924 | ||
8dc20d38 KL |
1925 | // Wait 10 millis for more data |
1926 | Thread.sleep(10); | |
7b5261bc KL |
1927 | } |
1928 | // System.err.println("end while loop"); System.err.flush(); | |
1929 | } catch (InterruptedException e) { | |
1930 | // SQUASH | |
1931 | } catch (IOException e) { | |
1932 | e.printStackTrace(); | |
1933 | done = true; | |
1934 | } | |
1935 | } // while ((done == false) && (stopReaderThread == false)) | |
1936 | // System.err.println("*** run() exiting..."); System.err.flush(); | |
4328bb42 KL |
1937 | } |
1938 | ||
b1589621 | 1939 | } |