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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) | |
749 | && (cursorY <= height - 1) | |
750 | && (cursorX <= width - 1) | |
751 | ) { | |
752 | result += cursor(true); | |
753 | result += gotoXY(cursorX, cursorY); | |
754 | } else { | |
755 | result += cursor(false); | |
756 | } | |
757 | output.write(result); | |
758 | flush(); | |
759 | } | |
760 | ||
761 | /** | |
762 | * Set the window title. | |
763 | * | |
764 | * @param title the new title | |
765 | */ | |
766 | public void setTitle(final String title) { | |
767 | output.write(getSetTitleString(title)); | |
768 | flush(); | |
769 | } | |
770 | ||
b1589621 | 771 | /** |
7b5261bc | 772 | * Reset keyboard/mouse input parser. |
b1589621 | 773 | */ |
42873e30 | 774 | private void resetParser() { |
7b5261bc KL |
775 | state = ParseState.GROUND; |
776 | params = new ArrayList<String>(); | |
7b5261bc KL |
777 | params.clear(); |
778 | params.add(""); | |
b1589621 KL |
779 | } |
780 | ||
781 | /** | |
782 | * Produce a control character or one of the special ones (ENTER, TAB, | |
7b5261bc | 783 | * etc.). |
b1589621 KL |
784 | * |
785 | * @param ch Unicode code point | |
b299e69c | 786 | * @param alt if true, set alt on the TKeypress |
7b5261bc | 787 | * @return one TKeypress event, either a control character (e.g. isKey == |
b1589621 KL |
788 | * false, ch == 'A', ctrl == true), or a special key (e.g. isKey == true, |
789 | * fnKey == ESC) | |
790 | */ | |
b299e69c | 791 | private TKeypressEvent controlChar(final char ch, final boolean alt) { |
7b5261bc KL |
792 | // System.err.printf("controlChar: %02x\n", ch); |
793 | ||
794 | switch (ch) { | |
795 | case 0x0D: | |
796 | // Carriage return --> ENTER | |
b299e69c | 797 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
798 | case 0x0A: |
799 | // Linefeed --> ENTER | |
b299e69c | 800 | return new TKeypressEvent(kbEnter, alt, false, false); |
7b5261bc KL |
801 | case 0x1B: |
802 | // ESC | |
b299e69c | 803 | return new TKeypressEvent(kbEsc, alt, false, false); |
7b5261bc KL |
804 | case '\t': |
805 | // TAB | |
b299e69c | 806 | return new TKeypressEvent(kbTab, alt, false, false); |
7b5261bc KL |
807 | default: |
808 | // Make all other control characters come back as the alphabetic | |
809 | // character with the ctrl field set. So SOH would be 'A' + | |
810 | // ctrl. | |
b299e69c KL |
811 | return new TKeypressEvent(false, 0, (char)(ch + 0x40), |
812 | alt, true, false); | |
7b5261bc | 813 | } |
b1589621 KL |
814 | } |
815 | ||
816 | /** | |
817 | * Produce special key from CSI Pn ; Pm ; ... ~ | |
818 | * | |
819 | * @return one KEYPRESS event representing a special key | |
820 | */ | |
821 | private TInputEvent csiFnKey() { | |
7b5261bc | 822 | int key = 0; |
7b5261bc KL |
823 | if (params.size() > 0) { |
824 | key = Integer.parseInt(params.get(0)); | |
825 | } | |
b299e69c KL |
826 | boolean alt = false; |
827 | boolean ctrl = false; | |
828 | boolean shift = false; | |
32437017 KL |
829 | if (params.size() > 1) { |
830 | shift = csiIsShift(params.get(1)); | |
831 | alt = csiIsAlt(params.get(1)); | |
832 | ctrl = csiIsCtrl(params.get(1)); | |
b299e69c | 833 | } |
d4a29741 | 834 | |
b299e69c KL |
835 | switch (key) { |
836 | case 1: | |
837 | return new TKeypressEvent(kbHome, alt, ctrl, shift); | |
838 | case 2: | |
839 | return new TKeypressEvent(kbIns, alt, ctrl, shift); | |
840 | case 3: | |
841 | return new TKeypressEvent(kbDel, alt, ctrl, shift); | |
842 | case 4: | |
843 | return new TKeypressEvent(kbEnd, alt, ctrl, shift); | |
844 | case 5: | |
845 | return new TKeypressEvent(kbPgUp, alt, ctrl, shift); | |
846 | case 6: | |
847 | return new TKeypressEvent(kbPgDn, alt, ctrl, shift); | |
848 | case 15: | |
849 | return new TKeypressEvent(kbF5, alt, ctrl, shift); | |
850 | case 17: | |
851 | return new TKeypressEvent(kbF6, alt, ctrl, shift); | |
852 | case 18: | |
853 | return new TKeypressEvent(kbF7, alt, ctrl, shift); | |
854 | case 19: | |
855 | return new TKeypressEvent(kbF8, alt, ctrl, shift); | |
856 | case 20: | |
857 | return new TKeypressEvent(kbF9, alt, ctrl, shift); | |
858 | case 21: | |
859 | return new TKeypressEvent(kbF10, alt, ctrl, shift); | |
860 | case 23: | |
861 | return new TKeypressEvent(kbF11, alt, ctrl, shift); | |
862 | case 24: | |
863 | return new TKeypressEvent(kbF12, alt, ctrl, shift); | |
7b5261bc KL |
864 | default: |
865 | // Unknown | |
866 | return null; | |
867 | } | |
b1589621 KL |
868 | } |
869 | ||
870 | /** | |
871 | * Produce mouse events based on "Any event tracking" and UTF-8 | |
872 | * coordinates. See | |
873 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
874 | * | |
875 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
876 | */ | |
877 | private TInputEvent parseMouse() { | |
7b5261bc KL |
878 | int buttons = params.get(0).charAt(0) - 32; |
879 | int x = params.get(0).charAt(1) - 32 - 1; | |
880 | int y = params.get(0).charAt(2) - 32 - 1; | |
881 | ||
882 | // Clamp X and Y to the physical screen coordinates. | |
883 | if (x >= windowResize.getWidth()) { | |
884 | x = windowResize.getWidth() - 1; | |
885 | } | |
886 | if (y >= windowResize.getHeight()) { | |
887 | y = windowResize.getHeight() - 1; | |
888 | } | |
889 | ||
d4a29741 KL |
890 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
891 | boolean eventMouse1 = false; | |
892 | boolean eventMouse2 = false; | |
893 | boolean eventMouse3 = false; | |
894 | boolean eventMouseWheelUp = false; | |
895 | boolean eventMouseWheelDown = false; | |
7b5261bc KL |
896 | |
897 | // System.err.printf("buttons: %04x\r\n", buttons); | |
898 | ||
899 | switch (buttons) { | |
900 | case 0: | |
d4a29741 | 901 | eventMouse1 = true; |
7b5261bc KL |
902 | mouse1 = true; |
903 | break; | |
904 | case 1: | |
d4a29741 | 905 | eventMouse2 = true; |
7b5261bc KL |
906 | mouse2 = true; |
907 | break; | |
908 | case 2: | |
d4a29741 | 909 | eventMouse3 = true; |
7b5261bc KL |
910 | mouse3 = true; |
911 | break; | |
912 | case 3: | |
913 | // Release or Move | |
914 | if (!mouse1 && !mouse2 && !mouse3) { | |
d4a29741 | 915 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc | 916 | } else { |
d4a29741 | 917 | eventType = TMouseEvent.Type.MOUSE_UP; |
7b5261bc KL |
918 | } |
919 | if (mouse1) { | |
920 | mouse1 = false; | |
d4a29741 | 921 | eventMouse1 = true; |
7b5261bc KL |
922 | } |
923 | if (mouse2) { | |
924 | mouse2 = false; | |
d4a29741 | 925 | eventMouse2 = true; |
7b5261bc KL |
926 | } |
927 | if (mouse3) { | |
928 | mouse3 = false; | |
d4a29741 | 929 | eventMouse3 = true; |
7b5261bc KL |
930 | } |
931 | break; | |
932 | ||
933 | case 32: | |
934 | // Dragging with mouse1 down | |
d4a29741 | 935 | eventMouse1 = true; |
7b5261bc | 936 | mouse1 = true; |
d4a29741 | 937 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
938 | break; |
939 | ||
940 | case 33: | |
941 | // Dragging with mouse2 down | |
d4a29741 | 942 | eventMouse2 = true; |
7b5261bc | 943 | mouse2 = true; |
d4a29741 | 944 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
945 | break; |
946 | ||
947 | case 34: | |
948 | // Dragging with mouse3 down | |
d4a29741 | 949 | eventMouse3 = true; |
7b5261bc | 950 | mouse3 = true; |
d4a29741 | 951 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
952 | break; |
953 | ||
954 | case 96: | |
955 | // Dragging with mouse2 down after wheelUp | |
d4a29741 | 956 | eventMouse2 = true; |
7b5261bc | 957 | mouse2 = true; |
d4a29741 | 958 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
959 | break; |
960 | ||
961 | case 97: | |
962 | // Dragging with mouse2 down after wheelDown | |
d4a29741 | 963 | eventMouse2 = true; |
7b5261bc | 964 | mouse2 = true; |
d4a29741 | 965 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
966 | break; |
967 | ||
968 | case 64: | |
d4a29741 | 969 | eventMouseWheelUp = true; |
7b5261bc KL |
970 | break; |
971 | ||
972 | case 65: | |
d4a29741 | 973 | eventMouseWheelDown = true; |
7b5261bc KL |
974 | break; |
975 | ||
976 | default: | |
977 | // Unknown, just make it motion | |
d4a29741 | 978 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
7b5261bc KL |
979 | break; |
980 | } | |
d4a29741 KL |
981 | return new TMouseEvent(eventType, x, y, x, y, |
982 | eventMouse1, eventMouse2, eventMouse3, | |
983 | eventMouseWheelUp, eventMouseWheelDown); | |
b1589621 KL |
984 | } |
985 | ||
b5f2a6db KL |
986 | /** |
987 | * Produce mouse events based on "Any event tracking" and SGR | |
988 | * coordinates. See | |
989 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking | |
990 | * | |
991 | * @param release if true, this was a release ('m') | |
992 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event | |
993 | */ | |
994 | private TInputEvent parseMouseSGR(final boolean release) { | |
995 | // SGR extended coordinates - mode 1006 | |
996 | if (params.size() < 3) { | |
997 | // Invalid position, bail out. | |
998 | return null; | |
999 | } | |
1000 | int buttons = Integer.parseInt(params.get(0)); | |
1001 | int x = Integer.parseInt(params.get(1)) - 1; | |
1002 | int y = Integer.parseInt(params.get(2)) - 1; | |
1003 | ||
1004 | // Clamp X and Y to the physical screen coordinates. | |
1005 | if (x >= windowResize.getWidth()) { | |
1006 | x = windowResize.getWidth() - 1; | |
1007 | } | |
1008 | if (y >= windowResize.getHeight()) { | |
1009 | y = windowResize.getHeight() - 1; | |
1010 | } | |
1011 | ||
1012 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; | |
1013 | boolean eventMouse1 = false; | |
1014 | boolean eventMouse2 = false; | |
1015 | boolean eventMouse3 = false; | |
1016 | boolean eventMouseWheelUp = false; | |
1017 | boolean eventMouseWheelDown = false; | |
1018 | ||
1019 | if (release) { | |
1020 | eventType = TMouseEvent.Type.MOUSE_UP; | |
1021 | } | |
1022 | ||
1023 | switch (buttons) { | |
1024 | case 0: | |
1025 | eventMouse1 = true; | |
1026 | break; | |
1027 | case 1: | |
1028 | eventMouse2 = true; | |
1029 | break; | |
1030 | case 2: | |
1031 | eventMouse3 = true; | |
1032 | break; | |
1033 | case 35: | |
1034 | // Motion only, no buttons down | |
1035 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1036 | break; | |
1037 | ||
1038 | case 32: | |
1039 | // Dragging with mouse1 down | |
1040 | eventMouse1 = true; | |
1041 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1042 | break; | |
1043 | ||
1044 | case 33: | |
1045 | // Dragging with mouse2 down | |
1046 | eventMouse2 = true; | |
1047 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1048 | break; | |
1049 | ||
1050 | case 34: | |
1051 | // Dragging with mouse3 down | |
1052 | eventMouse3 = true; | |
1053 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1054 | break; | |
1055 | ||
1056 | case 96: | |
1057 | // Dragging with mouse2 down after wheelUp | |
1058 | eventMouse2 = true; | |
1059 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1060 | break; | |
1061 | ||
1062 | case 97: | |
1063 | // Dragging with mouse2 down after wheelDown | |
1064 | eventMouse2 = true; | |
1065 | eventType = TMouseEvent.Type.MOUSE_MOTION; | |
1066 | break; | |
1067 | ||
1068 | case 64: | |
1069 | eventMouseWheelUp = true; | |
1070 | break; | |
1071 | ||
1072 | case 65: | |
1073 | eventMouseWheelDown = true; | |
1074 | break; | |
1075 | ||
1076 | default: | |
1077 | // Unknown, bail out | |
1078 | return null; | |
1079 | } | |
1080 | return new TMouseEvent(eventType, x, y, x, y, | |
1081 | eventMouse1, eventMouse2, eventMouse3, | |
1082 | eventMouseWheelUp, eventMouseWheelDown); | |
1083 | } | |
1084 | ||
b1589621 | 1085 | /** |
05dbb28d | 1086 | * Return any events in the IO queue. |
b1589621 | 1087 | * |
623a1bd1 | 1088 | * @param queue list to append new events to |
05dbb28d | 1089 | */ |
7b5261bc KL |
1090 | public void getEvents(final List<TInputEvent> queue) { |
1091 | synchronized (eventQueue) { | |
1092 | if (eventQueue.size() > 0) { | |
8e688b92 KL |
1093 | synchronized (queue) { |
1094 | queue.addAll(eventQueue); | |
1095 | } | |
7b5261bc KL |
1096 | eventQueue.clear(); |
1097 | } | |
1098 | } | |
05dbb28d KL |
1099 | } |
1100 | ||
1101 | /** | |
623a1bd1 | 1102 | * Return any events in the IO queue due to timeout. |
b1589621 | 1103 | * |
623a1bd1 | 1104 | * @param queue list to append new events to |
b1589621 | 1105 | */ |
a83fea2b KL |
1106 | private void getIdleEvents(final List<TInputEvent> queue) { |
1107 | Date now = new Date(); | |
7b5261bc KL |
1108 | |
1109 | // Check for new window size | |
a83fea2b KL |
1110 | long windowSizeDelay = now.getTime() - windowSizeTime; |
1111 | if (windowSizeDelay > 1000) { | |
1112 | sessionInfo.queryWindowSize(); | |
1113 | int newWidth = sessionInfo.getWindowWidth(); | |
1114 | int newHeight = sessionInfo.getWindowHeight(); | |
1115 | if ((newWidth != windowResize.getWidth()) | |
1116 | || (newHeight != windowResize.getHeight()) | |
1117 | ) { | |
1118 | TResizeEvent event = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1119 | newWidth, newHeight); | |
1120 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, | |
1121 | newWidth, newHeight); | |
1122 | queue.add(event); | |
7b5261bc | 1123 | } |
a83fea2b | 1124 | windowSizeTime = now.getTime(); |
7b5261bc KL |
1125 | } |
1126 | ||
a83fea2b KL |
1127 | // ESCDELAY type timeout |
1128 | if (state == ParseState.ESCAPE) { | |
1129 | long escDelay = now.getTime() - escapeTime; | |
1130 | if (escDelay > 100) { | |
1131 | // After 0.1 seconds, assume a true escape character | |
1132 | queue.add(controlChar((char)0x1B, false)); | |
42873e30 | 1133 | resetParser(); |
7b5261bc KL |
1134 | } |
1135 | } | |
b1589621 KL |
1136 | } |
1137 | ||
32437017 KL |
1138 | /** |
1139 | * Returns true if the CSI parameter for a keyboard command means that | |
1140 | * shift was down. | |
1141 | */ | |
1142 | private boolean csiIsShift(final String x) { | |
1143 | if ((x.equals("2")) | |
1144 | || (x.equals("4")) | |
1145 | || (x.equals("6")) | |
1146 | || (x.equals("8")) | |
1147 | ) { | |
1148 | return true; | |
1149 | } | |
1150 | return false; | |
1151 | } | |
1152 | ||
1153 | /** | |
1154 | * Returns true if the CSI parameter for a keyboard command means that | |
1155 | * alt was down. | |
1156 | */ | |
1157 | private boolean csiIsAlt(final String x) { | |
1158 | if ((x.equals("3")) | |
1159 | || (x.equals("4")) | |
1160 | || (x.equals("7")) | |
1161 | || (x.equals("8")) | |
1162 | ) { | |
1163 | return true; | |
1164 | } | |
1165 | return false; | |
1166 | } | |
1167 | ||
1168 | /** | |
1169 | * Returns true if the CSI parameter for a keyboard command means that | |
1170 | * ctrl was down. | |
1171 | */ | |
1172 | private boolean csiIsCtrl(final String x) { | |
1173 | if ((x.equals("5")) | |
1174 | || (x.equals("6")) | |
1175 | || (x.equals("7")) | |
1176 | || (x.equals("8")) | |
1177 | ) { | |
1178 | return true; | |
1179 | } | |
1180 | return false; | |
1181 | } | |
1182 | ||
b1589621 KL |
1183 | /** |
1184 | * Parses the next character of input to see if an InputEvent is | |
1185 | * fully here. | |
1186 | * | |
623a1bd1 | 1187 | * @param events list to append new events to |
05dbb28d | 1188 | * @param ch Unicode code point |
b1589621 | 1189 | */ |
7b5261bc KL |
1190 | private void processChar(final List<TInputEvent> events, final char ch) { |
1191 | ||
7b5261bc | 1192 | // ESCDELAY type timeout |
b299e69c | 1193 | Date now = new Date(); |
7b5261bc KL |
1194 | if (state == ParseState.ESCAPE) { |
1195 | long escDelay = now.getTime() - escapeTime; | |
1196 | if (escDelay > 250) { | |
1197 | // After 0.25 seconds, assume a true escape character | |
b299e69c | 1198 | events.add(controlChar((char)0x1B, false)); |
42873e30 | 1199 | resetParser(); |
7b5261bc KL |
1200 | } |
1201 | } | |
1202 | ||
b299e69c KL |
1203 | // TKeypress fields |
1204 | boolean ctrl = false; | |
1205 | boolean alt = false; | |
1206 | boolean shift = false; | |
b299e69c | 1207 | |
7b5261bc KL |
1208 | // System.err.printf("state: %s ch %c\r\n", state, ch); |
1209 | ||
1210 | switch (state) { | |
1211 | case GROUND: | |
1212 | ||
1213 | if (ch == 0x1B) { | |
1214 | state = ParseState.ESCAPE; | |
1215 | escapeTime = now.getTime(); | |
1216 | return; | |
1217 | } | |
1218 | ||
1219 | if (ch <= 0x1F) { | |
1220 | // Control character | |
b299e69c | 1221 | events.add(controlChar(ch, false)); |
42873e30 | 1222 | resetParser(); |
7b5261bc KL |
1223 | return; |
1224 | } | |
1225 | ||
1226 | if (ch >= 0x20) { | |
1227 | // Normal character | |
b299e69c KL |
1228 | events.add(new TKeypressEvent(false, 0, ch, |
1229 | false, false, false)); | |
42873e30 | 1230 | resetParser(); |
7b5261bc KL |
1231 | return; |
1232 | } | |
1233 | ||
1234 | break; | |
1235 | ||
1236 | case ESCAPE: | |
1237 | if (ch <= 0x1F) { | |
1238 | // ALT-Control character | |
b299e69c | 1239 | events.add(controlChar(ch, true)); |
42873e30 | 1240 | resetParser(); |
7b5261bc KL |
1241 | return; |
1242 | } | |
1243 | ||
1244 | if (ch == 'O') { | |
1245 | // This will be one of the function keys | |
1246 | state = ParseState.ESCAPE_INTERMEDIATE; | |
1247 | return; | |
1248 | } | |
1249 | ||
1250 | // '[' goes to CSI_ENTRY | |
1251 | if (ch == '[') { | |
1252 | state = ParseState.CSI_ENTRY; | |
1253 | return; | |
1254 | } | |
1255 | ||
1256 | // Everything else is assumed to be Alt-keystroke | |
7b5261bc | 1257 | if ((ch >= 'A') && (ch <= 'Z')) { |
b299e69c | 1258 | shift = true; |
7b5261bc | 1259 | } |
b299e69c KL |
1260 | alt = true; |
1261 | events.add(new TKeypressEvent(false, 0, ch, alt, ctrl, shift)); | |
42873e30 | 1262 | resetParser(); |
7b5261bc KL |
1263 | return; |
1264 | ||
1265 | case ESCAPE_INTERMEDIATE: | |
1266 | if ((ch >= 'P') && (ch <= 'S')) { | |
1267 | // Function key | |
7b5261bc KL |
1268 | switch (ch) { |
1269 | case 'P': | |
b299e69c | 1270 | events.add(new TKeypressEvent(kbF1)); |
7b5261bc KL |
1271 | break; |
1272 | case 'Q': | |
b299e69c | 1273 | events.add(new TKeypressEvent(kbF2)); |
7b5261bc KL |
1274 | break; |
1275 | case 'R': | |
b299e69c | 1276 | events.add(new TKeypressEvent(kbF3)); |
7b5261bc KL |
1277 | break; |
1278 | case 'S': | |
b299e69c | 1279 | events.add(new TKeypressEvent(kbF4)); |
7b5261bc KL |
1280 | break; |
1281 | default: | |
1282 | break; | |
1283 | } | |
42873e30 | 1284 | resetParser(); |
7b5261bc KL |
1285 | return; |
1286 | } | |
1287 | ||
1288 | // Unknown keystroke, ignore | |
42873e30 | 1289 | resetParser(); |
7b5261bc KL |
1290 | return; |
1291 | ||
1292 | case CSI_ENTRY: | |
1293 | // Numbers - parameter values | |
1294 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
1295 | params.set(params.size() - 1, |
1296 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
1297 | state = ParseState.CSI_PARAM; |
1298 | return; | |
1299 | } | |
1300 | // Parameter separator | |
1301 | if (ch == ';') { | |
a83fea2b | 1302 | params.add(""); |
7b5261bc KL |
1303 | return; |
1304 | } | |
1305 | ||
1306 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
1307 | switch (ch) { | |
1308 | case 'A': | |
1309 | // Up | |
b299e69c | 1310 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 1311 | resetParser(); |
7b5261bc KL |
1312 | return; |
1313 | case 'B': | |
1314 | // Down | |
b299e69c | 1315 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 1316 | resetParser(); |
7b5261bc KL |
1317 | return; |
1318 | case 'C': | |
1319 | // Right | |
b299e69c | 1320 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 1321 | resetParser(); |
7b5261bc KL |
1322 | return; |
1323 | case 'D': | |
1324 | // Left | |
b299e69c | 1325 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 1326 | resetParser(); |
7b5261bc KL |
1327 | return; |
1328 | case 'H': | |
1329 | // Home | |
b299e69c | 1330 | events.add(new TKeypressEvent(kbHome)); |
42873e30 | 1331 | resetParser(); |
7b5261bc KL |
1332 | return; |
1333 | case 'F': | |
1334 | // End | |
b299e69c | 1335 | events.add(new TKeypressEvent(kbEnd)); |
42873e30 | 1336 | resetParser(); |
7b5261bc KL |
1337 | return; |
1338 | case 'Z': | |
1339 | // CBT - Cursor backward X tab stops (default 1) | |
b299e69c | 1340 | events.add(new TKeypressEvent(kbBackTab)); |
42873e30 | 1341 | resetParser(); |
7b5261bc KL |
1342 | return; |
1343 | case 'M': | |
1344 | // Mouse position | |
1345 | state = ParseState.MOUSE; | |
1346 | return; | |
b5f2a6db KL |
1347 | case '<': |
1348 | // Mouse position, SGR (1006) coordinates | |
1349 | state = ParseState.MOUSE_SGR; | |
1350 | return; | |
7b5261bc KL |
1351 | default: |
1352 | break; | |
1353 | } | |
1354 | } | |
1355 | ||
1356 | // Unknown keystroke, ignore | |
42873e30 | 1357 | resetParser(); |
7b5261bc KL |
1358 | return; |
1359 | ||
b5f2a6db KL |
1360 | case MOUSE_SGR: |
1361 | // Numbers - parameter values | |
1362 | if ((ch >= '0') && (ch <= '9')) { | |
1363 | params.set(params.size() - 1, | |
1364 | params.get(params.size() - 1) + ch); | |
1365 | return; | |
1366 | } | |
1367 | // Parameter separator | |
1368 | if (ch == ';') { | |
1369 | params.add(""); | |
1370 | return; | |
1371 | } | |
1372 | ||
1373 | switch (ch) { | |
1374 | case 'M': | |
1375 | // Generate a mouse press event | |
1376 | TInputEvent event = parseMouseSGR(false); | |
1377 | if (event != null) { | |
1378 | events.add(event); | |
1379 | } | |
42873e30 | 1380 | resetParser(); |
b5f2a6db KL |
1381 | return; |
1382 | case 'm': | |
1383 | // Generate a mouse release event | |
1384 | event = parseMouseSGR(true); | |
1385 | if (event != null) { | |
1386 | events.add(event); | |
1387 | } | |
42873e30 | 1388 | resetParser(); |
b5f2a6db KL |
1389 | return; |
1390 | default: | |
1391 | break; | |
1392 | } | |
1393 | ||
1394 | // Unknown keystroke, ignore | |
42873e30 | 1395 | resetParser(); |
b5f2a6db KL |
1396 | return; |
1397 | ||
7b5261bc KL |
1398 | case CSI_PARAM: |
1399 | // Numbers - parameter values | |
1400 | if ((ch >= '0') && (ch <= '9')) { | |
92554d64 KL |
1401 | params.set(params.size() - 1, |
1402 | params.get(params.size() - 1) + ch); | |
7b5261bc KL |
1403 | state = ParseState.CSI_PARAM; |
1404 | return; | |
1405 | } | |
1406 | // Parameter separator | |
1407 | if (ch == ';') { | |
92554d64 | 1408 | params.add(""); |
7b5261bc KL |
1409 | return; |
1410 | } | |
1411 | ||
1412 | if (ch == '~') { | |
1413 | events.add(csiFnKey()); | |
42873e30 | 1414 | resetParser(); |
7b5261bc KL |
1415 | return; |
1416 | } | |
1417 | ||
1418 | if ((ch >= 0x30) && (ch <= 0x7E)) { | |
1419 | switch (ch) { | |
1420 | case 'A': | |
1421 | // Up | |
7b5261bc | 1422 | if (params.size() > 1) { |
32437017 KL |
1423 | shift = csiIsShift(params.get(1)); |
1424 | alt = csiIsAlt(params.get(1)); | |
1425 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1426 | } |
b299e69c | 1427 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
42873e30 | 1428 | resetParser(); |
7b5261bc KL |
1429 | return; |
1430 | case 'B': | |
1431 | // Down | |
7b5261bc | 1432 | if (params.size() > 1) { |
32437017 KL |
1433 | shift = csiIsShift(params.get(1)); |
1434 | alt = csiIsAlt(params.get(1)); | |
1435 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1436 | } |
b299e69c | 1437 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
42873e30 | 1438 | resetParser(); |
7b5261bc KL |
1439 | return; |
1440 | case 'C': | |
1441 | // Right | |
7b5261bc | 1442 | if (params.size() > 1) { |
32437017 KL |
1443 | shift = csiIsShift(params.get(1)); |
1444 | alt = csiIsAlt(params.get(1)); | |
1445 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1446 | } |
b299e69c | 1447 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
42873e30 | 1448 | resetParser(); |
7b5261bc KL |
1449 | return; |
1450 | case 'D': | |
1451 | // Left | |
7b5261bc | 1452 | if (params.size() > 1) { |
32437017 KL |
1453 | shift = csiIsShift(params.get(1)); |
1454 | alt = csiIsAlt(params.get(1)); | |
1455 | ctrl = csiIsCtrl(params.get(1)); | |
7b5261bc | 1456 | } |
b299e69c | 1457 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
42873e30 | 1458 | resetParser(); |
7b5261bc | 1459 | return; |
32437017 KL |
1460 | case 'H': |
1461 | // Home | |
1462 | if (params.size() > 1) { | |
1463 | shift = csiIsShift(params.get(1)); | |
1464 | alt = csiIsAlt(params.get(1)); | |
1465 | ctrl = csiIsCtrl(params.get(1)); | |
1466 | } | |
1467 | events.add(new TKeypressEvent(kbHome, alt, ctrl, shift)); | |
42873e30 | 1468 | resetParser(); |
32437017 KL |
1469 | return; |
1470 | case 'F': | |
1471 | // End | |
1472 | if (params.size() > 1) { | |
1473 | shift = csiIsShift(params.get(1)); | |
1474 | alt = csiIsAlt(params.get(1)); | |
1475 | ctrl = csiIsCtrl(params.get(1)); | |
1476 | } | |
1477 | events.add(new TKeypressEvent(kbEnd, alt, ctrl, shift)); | |
42873e30 | 1478 | resetParser(); |
32437017 | 1479 | return; |
7b5261bc KL |
1480 | default: |
1481 | break; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | // Unknown keystroke, ignore | |
42873e30 | 1486 | resetParser(); |
7b5261bc KL |
1487 | return; |
1488 | ||
1489 | case MOUSE: | |
92554d64 | 1490 | params.set(0, params.get(params.size() - 1) + ch); |
7b5261bc KL |
1491 | if (params.get(0).length() == 3) { |
1492 | // We have enough to generate a mouse event | |
1493 | events.add(parseMouse()); | |
42873e30 | 1494 | resetParser(); |
7b5261bc KL |
1495 | } |
1496 | return; | |
1497 | ||
1498 | default: | |
1499 | break; | |
1500 | } | |
1501 | ||
1502 | // This "should" be impossible to reach | |
1503 | return; | |
b1589621 KL |
1504 | } |
1505 | ||
1506 | /** | |
05dbb28d KL |
1507 | * Tell (u)xterm that we want alt- keystrokes to send escape + character |
1508 | * rather than set the 8th bit. Anyone who wants UTF8 should want this | |
1509 | * enabled. | |
b1589621 | 1510 | * |
05dbb28d KL |
1511 | * @param on if true, enable metaSendsEscape |
1512 | * @return the string to emit to xterm | |
b1589621 | 1513 | */ |
b5f2a6db | 1514 | private String xtermMetaSendsEscape(final boolean on) { |
7b5261bc KL |
1515 | if (on) { |
1516 | return "\033[?1036h\033[?1034l"; | |
1517 | } | |
1518 | return "\033[?1036l"; | |
b1589621 KL |
1519 | } |
1520 | ||
55d2b2c2 | 1521 | /** |
42873e30 | 1522 | * Create an xterm OSC sequence to change the window title. |
55d2b2c2 KL |
1523 | * |
1524 | * @param title the new title | |
1525 | * @return the string to emit to xterm | |
1526 | */ | |
42873e30 | 1527 | private String getSetTitleString(final String title) { |
55d2b2c2 KL |
1528 | return "\033]2;" + title + "\007"; |
1529 | } | |
1530 | ||
b1589621 | 1531 | /** |
42873e30 | 1532 | * Create a SGR parameter sequence for a single color change. |
b1589621 | 1533 | * |
15ea4d73 | 1534 | * @param bold if true, set bold |
05dbb28d KL |
1535 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
1536 | * @param foreground if true, this is a foreground color | |
1537 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1538 | * e.g. "\033[42m" | |
b1589621 | 1539 | */ |
42873e30 | 1540 | private String color(final boolean bold, final Color color, |
15ea4d73 KL |
1541 | final boolean foreground) { |
1542 | return color(color, foreground, true) + | |
1543 | rgbColor(bold, color, foreground); | |
1544 | } | |
1545 | ||
1546 | /** | |
1547 | * Create a T.416 RGB parameter sequence for a single color change. | |
1548 | * | |
1549 | * @param bold if true, set bold | |
1550 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants | |
1551 | * @param foreground if true, this is a foreground color | |
1552 | * @return the string to emit to an xterm terminal with RGB support, | |
1553 | * e.g. "\033[38;2;RR;GG;BBm" | |
1554 | */ | |
1555 | private String rgbColor(final boolean bold, final Color color, | |
1556 | final boolean foreground) { | |
1557 | if (doRgbColor == false) { | |
1558 | return ""; | |
1559 | } | |
1560 | StringBuilder sb = new StringBuilder("\033["); | |
1561 | if (bold) { | |
1562 | // Bold implies foreground only | |
1563 | sb.append("38;2;"); | |
1564 | if (color.equals(Color.BLACK)) { | |
6ba187ac | 1565 | sb.append("84;84;84"); |
15ea4d73 | 1566 | } else if (color.equals(Color.RED)) { |
6ba187ac | 1567 | sb.append("252;84;84"); |
15ea4d73 | 1568 | } else if (color.equals(Color.GREEN)) { |
6ba187ac | 1569 | sb.append("84;252;84"); |
15ea4d73 | 1570 | } else if (color.equals(Color.YELLOW)) { |
6ba187ac | 1571 | sb.append("252;252;84"); |
15ea4d73 | 1572 | } else if (color.equals(Color.BLUE)) { |
6ba187ac | 1573 | sb.append("84;84;252"); |
15ea4d73 | 1574 | } else if (color.equals(Color.MAGENTA)) { |
6ba187ac | 1575 | sb.append("252;84;252"); |
15ea4d73 | 1576 | } else if (color.equals(Color.CYAN)) { |
6ba187ac | 1577 | sb.append("84;252;252"); |
15ea4d73 KL |
1578 | } else if (color.equals(Color.WHITE)) { |
1579 | sb.append("252;252;252"); | |
1580 | } | |
1581 | } else { | |
1582 | if (foreground) { | |
1583 | sb.append("38;2;"); | |
1584 | } else { | |
1585 | sb.append("48;2;"); | |
1586 | } | |
1587 | if (color.equals(Color.BLACK)) { | |
1588 | sb.append("0;0;0"); | |
1589 | } else if (color.equals(Color.RED)) { | |
1590 | sb.append("168;0;0"); | |
1591 | } else if (color.equals(Color.GREEN)) { | |
1592 | sb.append("0;168;0"); | |
1593 | } else if (color.equals(Color.YELLOW)) { | |
6ba187ac | 1594 | sb.append("168;84;0"); |
15ea4d73 KL |
1595 | } else if (color.equals(Color.BLUE)) { |
1596 | sb.append("0;0;168"); | |
1597 | } else if (color.equals(Color.MAGENTA)) { | |
1598 | sb.append("168;0;168"); | |
1599 | } else if (color.equals(Color.CYAN)) { | |
1600 | sb.append("0;168;168"); | |
1601 | } else if (color.equals(Color.WHITE)) { | |
1602 | sb.append("168;168;168"); | |
1603 | } | |
1604 | } | |
1605 | sb.append("m"); | |
1606 | return sb.toString(); | |
1607 | } | |
1608 | ||
1609 | /** | |
1610 | * Create a T.416 RGB parameter sequence for both foreground and | |
1611 | * background color change. | |
1612 | * | |
1613 | * @param bold if true, set bold | |
1614 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1615 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1616 | * @return the string to emit to an xterm terminal with RGB support, | |
1617 | * e.g. "\033[38;2;RR;GG;BB;48;2;RR;GG;BBm" | |
1618 | */ | |
1619 | private String rgbColor(final boolean bold, final Color foreColor, | |
1620 | final Color backColor) { | |
1621 | if (doRgbColor == false) { | |
1622 | return ""; | |
1623 | } | |
1624 | ||
1625 | return rgbColor(bold, foreColor, true) + | |
1626 | rgbColor(false, backColor, false); | |
b1589621 KL |
1627 | } |
1628 | ||
1629 | /** | |
1630 | * Create a SGR parameter sequence for a single color change. | |
1631 | * | |
05dbb28d KL |
1632 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
1633 | * @param foreground if true, this is a foreground color | |
1634 | * @param header if true, make the full header, otherwise just emit the | |
1635 | * color parameter e.g. "42;" | |
1636 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1637 | * e.g. "\033[42m" | |
b1589621 | 1638 | */ |
b5f2a6db | 1639 | private String color(final Color color, final boolean foreground, |
7b5261bc KL |
1640 | final boolean header) { |
1641 | ||
1642 | int ecmaColor = color.getValue(); | |
1643 | ||
1644 | // Convert Color.* values to SGR numerics | |
1645 | if (foreground) { | |
1646 | ecmaColor += 30; | |
1647 | } else { | |
1648 | ecmaColor += 40; | |
1649 | } | |
1650 | ||
1651 | if (header) { | |
1652 | return String.format("\033[%dm", ecmaColor); | |
1653 | } else { | |
1654 | return String.format("%d;", ecmaColor); | |
1655 | } | |
b1589621 KL |
1656 | } |
1657 | ||
1658 | /** | |
b5f2a6db | 1659 | * Create a SGR parameter sequence for both foreground and background |
42873e30 | 1660 | * color change. |
b1589621 | 1661 | * |
15ea4d73 | 1662 | * @param bold if true, set bold |
05dbb28d KL |
1663 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1664 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1665 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1666 | * e.g. "\033[31;42m" | |
b1589621 | 1667 | */ |
42873e30 | 1668 | private String color(final boolean bold, final Color foreColor, |
15ea4d73 KL |
1669 | final Color backColor) { |
1670 | return color(foreColor, backColor, true) + | |
1671 | rgbColor(bold, foreColor, backColor); | |
b1589621 KL |
1672 | } |
1673 | ||
1674 | /** | |
1675 | * Create a SGR parameter sequence for both foreground and | |
1676 | * background color change. | |
1677 | * | |
05dbb28d KL |
1678 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1679 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1680 | * @param header if true, make the full header, otherwise just emit the | |
1681 | * color parameter e.g. "31;42;" | |
1682 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1683 | * e.g. "\033[31;42m" | |
b1589621 | 1684 | */ |
b5f2a6db | 1685 | private String color(final Color foreColor, final Color backColor, |
7b5261bc | 1686 | final boolean header) { |
b1589621 | 1687 | |
7b5261bc KL |
1688 | int ecmaForeColor = foreColor.getValue(); |
1689 | int ecmaBackColor = backColor.getValue(); | |
b1589621 | 1690 | |
7b5261bc KL |
1691 | // Convert Color.* values to SGR numerics |
1692 | ecmaBackColor += 40; | |
1693 | ecmaForeColor += 30; | |
b1589621 | 1694 | |
7b5261bc KL |
1695 | if (header) { |
1696 | return String.format("\033[%d;%dm", ecmaForeColor, ecmaBackColor); | |
1697 | } else { | |
1698 | return String.format("%d;%d;", ecmaForeColor, ecmaBackColor); | |
1699 | } | |
b1589621 KL |
1700 | } |
1701 | ||
1702 | /** | |
1703 | * Create a SGR parameter sequence for foreground, background, and | |
05dbb28d | 1704 | * several attributes. This sequence first resets all attributes to |
42873e30 | 1705 | * default, then sets attributes as per the parameters. |
b1589621 | 1706 | * |
05dbb28d KL |
1707 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
1708 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants | |
1709 | * @param bold if true, set bold | |
1710 | * @param reverse if true, set reverse | |
1711 | * @param blink if true, set blink | |
1712 | * @param underline if true, set underline | |
1713 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1714 | * e.g. "\033[0;1;31;42m" | |
b1589621 | 1715 | */ |
42873e30 | 1716 | private String color(final Color foreColor, final Color backColor, |
7b5261bc KL |
1717 | final boolean bold, final boolean reverse, final boolean blink, |
1718 | final boolean underline) { | |
1719 | ||
1720 | int ecmaForeColor = foreColor.getValue(); | |
1721 | int ecmaBackColor = backColor.getValue(); | |
1722 | ||
1723 | // Convert Color.* values to SGR numerics | |
1724 | ecmaBackColor += 40; | |
1725 | ecmaForeColor += 30; | |
1726 | ||
1727 | StringBuilder sb = new StringBuilder(); | |
1728 | if ( bold && reverse && blink && !underline ) { | |
1729 | sb.append("\033[0;1;7;5;"); | |
1730 | } else if ( bold && reverse && !blink && !underline ) { | |
1731 | sb.append("\033[0;1;7;"); | |
1732 | } else if ( !bold && reverse && blink && !underline ) { | |
1733 | sb.append("\033[0;7;5;"); | |
1734 | } else if ( bold && !reverse && blink && !underline ) { | |
1735 | sb.append("\033[0;1;5;"); | |
1736 | } else if ( bold && !reverse && !blink && !underline ) { | |
1737 | sb.append("\033[0;1;"); | |
1738 | } else if ( !bold && reverse && !blink && !underline ) { | |
1739 | sb.append("\033[0;7;"); | |
1740 | } else if ( !bold && !reverse && blink && !underline) { | |
1741 | sb.append("\033[0;5;"); | |
1742 | } else if ( bold && reverse && blink && underline ) { | |
1743 | sb.append("\033[0;1;7;5;4;"); | |
1744 | } else if ( bold && reverse && !blink && underline ) { | |
1745 | sb.append("\033[0;1;7;4;"); | |
1746 | } else if ( !bold && reverse && blink && underline ) { | |
1747 | sb.append("\033[0;7;5;4;"); | |
1748 | } else if ( bold && !reverse && blink && underline ) { | |
1749 | sb.append("\033[0;1;5;4;"); | |
1750 | } else if ( bold && !reverse && !blink && underline ) { | |
1751 | sb.append("\033[0;1;4;"); | |
1752 | } else if ( !bold && reverse && !blink && underline ) { | |
1753 | sb.append("\033[0;7;4;"); | |
1754 | } else if ( !bold && !reverse && blink && underline) { | |
1755 | sb.append("\033[0;5;4;"); | |
1756 | } else if ( !bold && !reverse && !blink && underline) { | |
1757 | sb.append("\033[0;4;"); | |
1758 | } else { | |
1759 | assert (!bold && !reverse && !blink && !underline); | |
1760 | sb.append("\033[0;"); | |
1761 | } | |
1762 | sb.append(String.format("%d;%dm", ecmaForeColor, ecmaBackColor)); | |
8a632d71 KL |
1763 | sb.append(rgbColor(bold, foreColor, backColor)); |
1764 | return sb.toString(); | |
b1589621 KL |
1765 | } |
1766 | ||
b1589621 | 1767 | /** |
42873e30 | 1768 | * Create a SGR parameter sequence to reset to defaults. |
b1589621 | 1769 | * |
05dbb28d KL |
1770 | * @return the string to emit to an ANSI / ECMA-style terminal, |
1771 | * e.g. "\033[0m" | |
b1589621 | 1772 | */ |
42873e30 | 1773 | private String normal() { |
8a632d71 | 1774 | return normal(true) + rgbColor(false, Color.WHITE, Color.BLACK); |
b1589621 KL |
1775 | } |
1776 | ||
1777 | /** | |
1778 | * Create a SGR parameter sequence to reset to defaults. | |
1779 | * | |
05dbb28d KL |
1780 | * @param header if true, make the full header, otherwise just emit the |
1781 | * bare parameter e.g. "0;" | |
1782 | * @return the string to emit to an ANSI / ECMA-style terminal, | |
1783 | * e.g. "\033[0m" | |
b1589621 | 1784 | */ |
b5f2a6db | 1785 | private String normal(final boolean header) { |
7b5261bc KL |
1786 | if (header) { |
1787 | return "\033[0;37;40m"; | |
1788 | } | |
1789 | return "0;37;40"; | |
b1589621 KL |
1790 | } |
1791 | ||
b1589621 | 1792 | /** |
42873e30 | 1793 | * Create a SGR parameter sequence for enabling the visible cursor. |
b1589621 | 1794 | * |
05dbb28d KL |
1795 | * @param on if true, turn on cursor |
1796 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 1797 | */ |
42873e30 | 1798 | private String cursor(final boolean on) { |
7b5261bc KL |
1799 | if (on && !cursorOn) { |
1800 | cursorOn = true; | |
1801 | return "\033[?25h"; | |
1802 | } | |
1803 | if (!on && cursorOn) { | |
1804 | cursorOn = false; | |
1805 | return "\033[?25l"; | |
1806 | } | |
1807 | return ""; | |
b1589621 KL |
1808 | } |
1809 | ||
1810 | /** | |
1811 | * Clear the entire screen. Because some terminals use back-color-erase, | |
1812 | * set the color to white-on-black beforehand. | |
1813 | * | |
05dbb28d | 1814 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 1815 | */ |
42873e30 | 1816 | private String clearAll() { |
7b5261bc | 1817 | return "\033[0;37;40m\033[2J"; |
b1589621 KL |
1818 | } |
1819 | ||
1820 | /** | |
1821 | * Clear the line from the cursor (inclusive) to the end of the screen. | |
1822 | * Because some terminals use back-color-erase, set the color to | |
42873e30 | 1823 | * white-on-black beforehand. |
b1589621 | 1824 | * |
05dbb28d | 1825 | * @return the string to emit to an ANSI / ECMA-style terminal |
b1589621 | 1826 | */ |
42873e30 | 1827 | private String clearRemainingLine() { |
7b5261bc | 1828 | return "\033[0;37;40m\033[K"; |
b1589621 KL |
1829 | } |
1830 | ||
b1589621 | 1831 | /** |
42873e30 | 1832 | * Move the cursor to (x, y). |
b1589621 | 1833 | * |
05dbb28d KL |
1834 | * @param x column coordinate. 0 is the left-most column. |
1835 | * @param y row coordinate. 0 is the top-most row. | |
1836 | * @return the string to emit to an ANSI / ECMA-style terminal | |
b1589621 | 1837 | */ |
42873e30 | 1838 | private String gotoXY(final int x, final int y) { |
7b5261bc | 1839 | return String.format("\033[%d;%dH", y + 1, x + 1); |
b1589621 KL |
1840 | } |
1841 | ||
1842 | /** | |
05dbb28d | 1843 | * Tell (u)xterm that we want to receive mouse events based on "Any event |
b5f2a6db KL |
1844 | * tracking", UTF-8 coordinates, and then SGR coordinates. Ideally we |
1845 | * will end up with SGR coordinates with UTF-8 coordinates as a fallback. | |
1846 | * See | |
b1589621 KL |
1847 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
1848 | * | |
05dbb28d | 1849 | * Note that this also sets the alternate/primary screen buffer. |
b1589621 | 1850 | * |
05dbb28d KL |
1851 | * @param on If true, enable mouse report and use the alternate screen |
1852 | * buffer. If false disable mouse reporting and use the primary screen | |
1853 | * buffer. | |
1854 | * @return the string to emit to xterm | |
b1589621 | 1855 | */ |
b5f2a6db | 1856 | private String mouse(final boolean on) { |
7b5261bc | 1857 | if (on) { |
32437017 | 1858 | return "\033[?1002;1003;1005;1006h\033[?1049h"; |
7b5261bc | 1859 | } |
32437017 | 1860 | return "\033[?1002;1003;1006;1005l\033[?1049l"; |
b1589621 KL |
1861 | } |
1862 | ||
4328bb42 KL |
1863 | /** |
1864 | * Read function runs on a separate thread. | |
1865 | */ | |
1866 | public void run() { | |
7b5261bc KL |
1867 | boolean done = false; |
1868 | // available() will often return > 1, so we need to read in chunks to | |
1869 | // stay caught up. | |
1870 | char [] readBuffer = new char[128]; | |
1871 | List<TInputEvent> events = new LinkedList<TInputEvent>(); | |
1872 | ||
1873 | while (!done && !stopReaderThread) { | |
1874 | try { | |
1875 | // We assume that if inputStream has bytes available, then | |
1876 | // input won't block on read(). | |
1877 | int n = inputStream.available(); | |
1878 | if (n > 0) { | |
1879 | if (readBuffer.length < n) { | |
1880 | // The buffer wasn't big enough, make it huger | |
1881 | readBuffer = new char[readBuffer.length * 2]; | |
1882 | } | |
1883 | ||
bb35d919 | 1884 | int rc = input.read(readBuffer, 0, readBuffer.length); |
7b5261bc KL |
1885 | // System.err.printf("read() %d", rc); System.err.flush(); |
1886 | if (rc == -1) { | |
1887 | // This is EOF | |
1888 | done = true; | |
1889 | } else { | |
1890 | for (int i = 0; i < rc; i++) { | |
1891 | int ch = readBuffer[i]; | |
1892 | processChar(events, (char)ch); | |
9b1afdde KL |
1893 | } |
1894 | getIdleEvents(events); | |
1895 | if (events.size() > 0) { | |
1896 | // Add to the queue for the backend thread to | |
1897 | // be able to obtain. | |
1898 | synchronized (eventQueue) { | |
1899 | eventQueue.addAll(events); | |
1900 | } | |
3e074355 KL |
1901 | if (listener != null) { |
1902 | synchronized (listener) { | |
1903 | listener.notifyAll(); | |
1904 | } | |
7b5261bc | 1905 | } |
9b1afdde | 1906 | events.clear(); |
7b5261bc KL |
1907 | } |
1908 | } | |
1909 | } else { | |
a83fea2b KL |
1910 | getIdleEvents(events); |
1911 | if (events.size() > 0) { | |
1912 | synchronized (eventQueue) { | |
1913 | eventQueue.addAll(events); | |
1914 | } | |
1915 | events.clear(); | |
3e074355 KL |
1916 | if (listener != null) { |
1917 | synchronized (listener) { | |
1918 | listener.notifyAll(); | |
1919 | } | |
92554d64 | 1920 | } |
a83fea2b KL |
1921 | } |
1922 | ||
8dc20d38 KL |
1923 | // Wait 10 millis for more data |
1924 | Thread.sleep(10); | |
7b5261bc KL |
1925 | } |
1926 | // System.err.println("end while loop"); System.err.flush(); | |
1927 | } catch (InterruptedException e) { | |
1928 | // SQUASH | |
1929 | } catch (IOException e) { | |
1930 | e.printStackTrace(); | |
1931 | done = true; | |
1932 | } | |
1933 | } // while ((done == false) && (stopReaderThread == false)) | |
1934 | // System.err.println("*** run() exiting..."); System.err.flush(); | |
4328bb42 KL |
1935 | } |
1936 | ||
b1589621 | 1937 | } |