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