| 1 | /** |
| 2 | * Jexer - Java Text User Interface |
| 3 | * |
| 4 | * License: LGPLv3 or later |
| 5 | * |
| 6 | * This module is licensed under the GNU Lesser General Public License |
| 7 | * Version 3. Please see the file "COPYING" in this directory for more |
| 8 | * information about the GNU Lesser General Public License Version 3. |
| 9 | * |
| 10 | * Copyright (C) 2015 Kevin Lamonte |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU Lesser General Public License |
| 14 | * as published by the Free Software Foundation; either version 3 of |
| 15 | * the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, but |
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Lesser General Public |
| 23 | * License along with this program; if not, see |
| 24 | * http://www.gnu.org/licenses/, or write to the Free Software |
| 25 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 26 | * 02110-1301 USA |
| 27 | * |
| 28 | * @author Kevin Lamonte [kevin.lamonte@gmail.com] |
| 29 | * @version 1 |
| 30 | */ |
| 31 | package jexer.io; |
| 32 | |
| 33 | import java.io.BufferedReader; |
| 34 | import java.io.FileDescriptor; |
| 35 | import java.io.FileInputStream; |
| 36 | import java.io.InputStream; |
| 37 | import java.io.InputStreamReader; |
| 38 | import java.io.IOException; |
| 39 | import java.io.OutputStream; |
| 40 | import java.io.OutputStreamWriter; |
| 41 | import java.io.PrintWriter; |
| 42 | import java.io.Reader; |
| 43 | import java.io.UnsupportedEncodingException; |
| 44 | import java.util.ArrayList; |
| 45 | import java.util.Date; |
| 46 | import java.util.List; |
| 47 | import java.util.LinkedList; |
| 48 | |
| 49 | import jexer.TKeypress; |
| 50 | import jexer.bits.Color; |
| 51 | import jexer.event.TInputEvent; |
| 52 | import jexer.event.TKeypressEvent; |
| 53 | import jexer.event.TMouseEvent; |
| 54 | import jexer.event.TResizeEvent; |
| 55 | import jexer.session.SessionInfo; |
| 56 | import jexer.session.TSessionInfo; |
| 57 | import jexer.session.TTYSessionInfo; |
| 58 | import static jexer.TKeypress.*; |
| 59 | |
| 60 | /** |
| 61 | * This class reads keystrokes and mouse events and emits output to ANSI |
| 62 | * X3.64 / ECMA-48 type terminals e.g. xterm, linux, vt100, ansi.sys, etc. |
| 63 | */ |
| 64 | public final class ECMA48Terminal implements Runnable { |
| 65 | |
| 66 | /** |
| 67 | * The session information. |
| 68 | */ |
| 69 | private SessionInfo sessionInfo; |
| 70 | |
| 71 | /** |
| 72 | * Getter for sessionInfo. |
| 73 | * |
| 74 | * @return the SessionInfo |
| 75 | */ |
| 76 | public SessionInfo getSessionInfo() { |
| 77 | return sessionInfo; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * The event queue, filled up by a thread reading on input. |
| 82 | */ |
| 83 | private List<TInputEvent> eventQueue; |
| 84 | |
| 85 | /** |
| 86 | * If true, we want the reader thread to exit gracefully. |
| 87 | */ |
| 88 | private boolean stopReaderThread; |
| 89 | |
| 90 | /** |
| 91 | * The reader thread. |
| 92 | */ |
| 93 | private Thread readerThread; |
| 94 | |
| 95 | /** |
| 96 | * Parameters being collected. E.g. if the string is \033[1;3m, then |
| 97 | * params[0] will be 1 and params[1] will be 3. |
| 98 | */ |
| 99 | private ArrayList<String> params; |
| 100 | |
| 101 | /** |
| 102 | * params[paramI] is being appended to. |
| 103 | */ |
| 104 | private int paramI; |
| 105 | |
| 106 | /** |
| 107 | * States in the input parser. |
| 108 | */ |
| 109 | private enum ParseState { |
| 110 | GROUND, |
| 111 | ESCAPE, |
| 112 | ESCAPE_INTERMEDIATE, |
| 113 | CSI_ENTRY, |
| 114 | CSI_PARAM, |
| 115 | // CSI_INTERMEDIATE, |
| 116 | MOUSE |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Current parsing state. |
| 121 | */ |
| 122 | private ParseState state; |
| 123 | |
| 124 | /** |
| 125 | * The time we entered ESCAPE. If we get a bare escape without a code |
| 126 | * following it, this is used to return that bare escape. |
| 127 | */ |
| 128 | private long escapeTime; |
| 129 | |
| 130 | /** |
| 131 | * true if mouse1 was down. Used to report mouse1 on the release event. |
| 132 | */ |
| 133 | private boolean mouse1; |
| 134 | |
| 135 | /** |
| 136 | * true if mouse2 was down. Used to report mouse2 on the release event. |
| 137 | */ |
| 138 | private boolean mouse2; |
| 139 | |
| 140 | /** |
| 141 | * true if mouse3 was down. Used to report mouse3 on the release event. |
| 142 | */ |
| 143 | private boolean mouse3; |
| 144 | |
| 145 | /** |
| 146 | * Cache the cursor visibility value so we only emit the sequence when we |
| 147 | * need to. |
| 148 | */ |
| 149 | private boolean cursorOn = true; |
| 150 | |
| 151 | /** |
| 152 | * Cache the last window size to figure out if a TResizeEvent needs to be |
| 153 | * generated. |
| 154 | */ |
| 155 | private TResizeEvent windowResize = null; |
| 156 | |
| 157 | /** |
| 158 | * If true, then we changed System.in and need to change it back. |
| 159 | */ |
| 160 | private boolean setRawMode; |
| 161 | |
| 162 | /** |
| 163 | * The terminal's input. If an InputStream is not specified in the |
| 164 | * constructor, then this InputStreamReader will be bound to System.in |
| 165 | * with UTF-8 encoding. |
| 166 | */ |
| 167 | private Reader input; |
| 168 | |
| 169 | /** |
| 170 | * The terminal's raw InputStream. If an InputStream is not specified in |
| 171 | * the constructor, then this InputReader will be bound to System.in. |
| 172 | * This is used by run() to see if bytes are available() before calling |
| 173 | * (Reader)input.read(). |
| 174 | */ |
| 175 | private InputStream inputStream; |
| 176 | |
| 177 | /** |
| 178 | * The terminal's output. If an OutputStream is not specified in the |
| 179 | * constructor, then this PrintWriter will be bound to System.out with |
| 180 | * UTF-8 encoding. |
| 181 | */ |
| 182 | private PrintWriter output; |
| 183 | |
| 184 | /** |
| 185 | * When true, the terminal is sending non-UTF8 bytes when reporting mouse |
| 186 | * events. |
| 187 | * |
| 188 | * TODO: Add broken mouse detection back into the reader. |
| 189 | */ |
| 190 | private boolean brokenTerminalUTFMouse = false; |
| 191 | |
| 192 | /** |
| 193 | * Get the output writer. |
| 194 | * |
| 195 | * @return the Writer |
| 196 | */ |
| 197 | public PrintWriter getOutput() { |
| 198 | return output; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Check if there are events in the queue. |
| 203 | * |
| 204 | * @return if true, getEvents() has something to return to the backend |
| 205 | */ |
| 206 | public boolean hasEvents() { |
| 207 | synchronized (eventQueue) { |
| 208 | return (eventQueue.size() > 0); |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Call 'stty' to set cooked mode. |
| 214 | * |
| 215 | * <p>Actually executes '/bin/sh -c stty sane cooked < /dev/tty' |
| 216 | */ |
| 217 | private void sttyCooked() { |
| 218 | doStty(false); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Call 'stty' to set raw mode. |
| 223 | * |
| 224 | * <p>Actually executes '/bin/sh -c stty -ignbrk -brkint -parmrk -istrip |
| 225 | * -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten |
| 226 | * -parenb cs8 min 1 < /dev/tty' |
| 227 | */ |
| 228 | private void sttyRaw() { |
| 229 | doStty(true); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Call 'stty' to set raw or cooked mode. |
| 234 | * |
| 235 | * @param mode if true, set raw mode, otherwise set cooked mode |
| 236 | */ |
| 237 | private void doStty(final boolean mode) { |
| 238 | String [] cmdRaw = { |
| 239 | "/bin/sh", "-c", "stty -ignbrk -brkint -parmrk -istrip -inlcr -igncr -icrnl -ixon -opost -echo -echonl -icanon -isig -iexten -parenb cs8 min 1 < /dev/tty" |
| 240 | }; |
| 241 | String [] cmdCooked = { |
| 242 | "/bin/sh", "-c", "stty sane cooked < /dev/tty" |
| 243 | }; |
| 244 | try { |
| 245 | Process process; |
| 246 | if (mode) { |
| 247 | process = Runtime.getRuntime().exec(cmdRaw); |
| 248 | } else { |
| 249 | process = Runtime.getRuntime().exec(cmdCooked); |
| 250 | } |
| 251 | BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream(), "UTF-8")); |
| 252 | String line = in.readLine(); |
| 253 | if ((line != null) && (line.length() > 0)) { |
| 254 | System.err.println("WEIRD?! Normal output from stty: " + line); |
| 255 | } |
| 256 | while (true) { |
| 257 | BufferedReader err = new BufferedReader(new InputStreamReader(process.getErrorStream(), "UTF-8")); |
| 258 | line = err.readLine(); |
| 259 | if ((line != null) && (line.length() > 0)) { |
| 260 | System.err.println("Error output from stty: " + line); |
| 261 | } |
| 262 | try { |
| 263 | process.waitFor(); |
| 264 | break; |
| 265 | } catch (InterruptedException e) { |
| 266 | e.printStackTrace(); |
| 267 | } |
| 268 | } |
| 269 | int rc = process.exitValue(); |
| 270 | if (rc != 0) { |
| 271 | System.err.println("stty returned error code: " + rc); |
| 272 | } |
| 273 | } catch (IOException e) { |
| 274 | e.printStackTrace(); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Constructor sets up state for getEvent(). |
| 280 | * |
| 281 | * @param input an InputStream connected to the remote user, or null for |
| 282 | * System.in. If System.in is used, then on non-Windows systems it will |
| 283 | * be put in raw mode; shutdown() will (blindly!) put System.in in cooked |
| 284 | * mode. input is always converted to a Reader with UTF-8 encoding. |
| 285 | * @param output an OutputStream connected to the remote user, or null |
| 286 | * for System.out. output is always converted to a Writer with UTF-8 |
| 287 | * encoding. |
| 288 | * @throws UnsupportedEncodingException if an exception is thrown when |
| 289 | * creating the InputStreamReader |
| 290 | */ |
| 291 | public ECMA48Terminal(final InputStream input, |
| 292 | final OutputStream output) throws UnsupportedEncodingException { |
| 293 | |
| 294 | reset(); |
| 295 | mouse1 = false; |
| 296 | mouse2 = false; |
| 297 | mouse3 = false; |
| 298 | stopReaderThread = false; |
| 299 | |
| 300 | if (input == null) { |
| 301 | // inputStream = System.in; |
| 302 | inputStream = new FileInputStream(FileDescriptor.in); |
| 303 | sttyRaw(); |
| 304 | setRawMode = true; |
| 305 | } else { |
| 306 | inputStream = input; |
| 307 | } |
| 308 | this.input = new InputStreamReader(inputStream, "UTF-8"); |
| 309 | |
| 310 | // TODO: include TelnetSocket from NIB and have it implement |
| 311 | // SessionInfo |
| 312 | if (input instanceof SessionInfo) { |
| 313 | sessionInfo = (SessionInfo) input; |
| 314 | } |
| 315 | if (sessionInfo == null) { |
| 316 | if (input == null) { |
| 317 | // Reading right off the tty |
| 318 | sessionInfo = new TTYSessionInfo(); |
| 319 | } else { |
| 320 | sessionInfo = new TSessionInfo(); |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | if (output == null) { |
| 325 | this.output = new PrintWriter(new OutputStreamWriter(System.out, |
| 326 | "UTF-8")); |
| 327 | } else { |
| 328 | this.output = new PrintWriter(new OutputStreamWriter(output, |
| 329 | "UTF-8")); |
| 330 | } |
| 331 | |
| 332 | // Enable mouse reporting and metaSendsEscape |
| 333 | this.output.printf("%s%s", mouse(true), xtermMetaSendsEscape(true)); |
| 334 | |
| 335 | // Hang onto the window size |
| 336 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 337 | sessionInfo.getWindowWidth(), sessionInfo.getWindowHeight()); |
| 338 | |
| 339 | // Spin up the input reader |
| 340 | eventQueue = new LinkedList<TInputEvent>(); |
| 341 | readerThread = new Thread(this); |
| 342 | readerThread.start(); |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Restore terminal to normal state. |
| 347 | */ |
| 348 | public void shutdown() { |
| 349 | |
| 350 | // System.err.println("=== shutdown() ==="); System.err.flush(); |
| 351 | |
| 352 | // Tell the reader thread to stop looking at input |
| 353 | stopReaderThread = true; |
| 354 | try { |
| 355 | readerThread.join(); |
| 356 | } catch (InterruptedException e) { |
| 357 | e.printStackTrace(); |
| 358 | } |
| 359 | |
| 360 | // Disable mouse reporting and show cursor |
| 361 | output.printf("%s%s%s", mouse(false), cursor(true), normal()); |
| 362 | output.flush(); |
| 363 | |
| 364 | if (setRawMode) { |
| 365 | sttyCooked(); |
| 366 | setRawMode = false; |
| 367 | // We don't close System.in/out |
| 368 | } else { |
| 369 | // Shut down the streams, this should wake up the reader thread |
| 370 | // and make it exit. |
| 371 | try { |
| 372 | if (input != null) { |
| 373 | input.close(); |
| 374 | input = null; |
| 375 | } |
| 376 | if (output != null) { |
| 377 | output.close(); |
| 378 | output = null; |
| 379 | } |
| 380 | } catch (IOException e) { |
| 381 | e.printStackTrace(); |
| 382 | } |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Flush output. |
| 388 | */ |
| 389 | public void flush() { |
| 390 | output.flush(); |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * Reset keyboard/mouse input parser. |
| 395 | */ |
| 396 | private void reset() { |
| 397 | state = ParseState.GROUND; |
| 398 | params = new ArrayList<String>(); |
| 399 | paramI = 0; |
| 400 | params.clear(); |
| 401 | params.add(""); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Produce a control character or one of the special ones (ENTER, TAB, |
| 406 | * etc.). |
| 407 | * |
| 408 | * @param ch Unicode code point |
| 409 | * @param alt if true, set alt on the TKeypress |
| 410 | * @return one TKeypress event, either a control character (e.g. isKey == |
| 411 | * false, ch == 'A', ctrl == true), or a special key (e.g. isKey == true, |
| 412 | * fnKey == ESC) |
| 413 | */ |
| 414 | private TKeypressEvent controlChar(final char ch, final boolean alt) { |
| 415 | // System.err.printf("controlChar: %02x\n", ch); |
| 416 | |
| 417 | switch (ch) { |
| 418 | case 0x0D: |
| 419 | // Carriage return --> ENTER |
| 420 | return new TKeypressEvent(kbEnter, alt, false, false); |
| 421 | case 0x0A: |
| 422 | // Linefeed --> ENTER |
| 423 | return new TKeypressEvent(kbEnter, alt, false, false); |
| 424 | case 0x1B: |
| 425 | // ESC |
| 426 | return new TKeypressEvent(kbEsc, alt, false, false); |
| 427 | case '\t': |
| 428 | // TAB |
| 429 | return new TKeypressEvent(kbTab, alt, false, false); |
| 430 | default: |
| 431 | // Make all other control characters come back as the alphabetic |
| 432 | // character with the ctrl field set. So SOH would be 'A' + |
| 433 | // ctrl. |
| 434 | return new TKeypressEvent(false, 0, (char)(ch + 0x40), |
| 435 | alt, true, false); |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Produce special key from CSI Pn ; Pm ; ... ~ |
| 441 | * |
| 442 | * @return one KEYPRESS event representing a special key |
| 443 | */ |
| 444 | private TInputEvent csiFnKey() { |
| 445 | int key = 0; |
| 446 | int modifier = 0; |
| 447 | if (params.size() > 0) { |
| 448 | key = Integer.parseInt(params.get(0)); |
| 449 | } |
| 450 | if (params.size() > 1) { |
| 451 | modifier = Integer.parseInt(params.get(1)); |
| 452 | } |
| 453 | boolean alt = false; |
| 454 | boolean ctrl = false; |
| 455 | boolean shift = false; |
| 456 | |
| 457 | switch (modifier) { |
| 458 | case 0: |
| 459 | // No modifier |
| 460 | break; |
| 461 | case 2: |
| 462 | // Shift |
| 463 | shift = true; |
| 464 | break; |
| 465 | case 3: |
| 466 | // Alt |
| 467 | alt = true; |
| 468 | break; |
| 469 | case 5: |
| 470 | // Ctrl |
| 471 | ctrl = true; |
| 472 | break; |
| 473 | default: |
| 474 | // Unknown modifier, bail out |
| 475 | return null; |
| 476 | } |
| 477 | |
| 478 | switch (key) { |
| 479 | case 1: |
| 480 | return new TKeypressEvent(kbHome, alt, ctrl, shift); |
| 481 | case 2: |
| 482 | return new TKeypressEvent(kbIns, alt, ctrl, shift); |
| 483 | case 3: |
| 484 | return new TKeypressEvent(kbDel, alt, ctrl, shift); |
| 485 | case 4: |
| 486 | return new TKeypressEvent(kbEnd, alt, ctrl, shift); |
| 487 | case 5: |
| 488 | return new TKeypressEvent(kbPgUp, alt, ctrl, shift); |
| 489 | case 6: |
| 490 | return new TKeypressEvent(kbPgDn, alt, ctrl, shift); |
| 491 | case 15: |
| 492 | return new TKeypressEvent(kbF5, alt, ctrl, shift); |
| 493 | case 17: |
| 494 | return new TKeypressEvent(kbF6, alt, ctrl, shift); |
| 495 | case 18: |
| 496 | return new TKeypressEvent(kbF7, alt, ctrl, shift); |
| 497 | case 19: |
| 498 | return new TKeypressEvent(kbF8, alt, ctrl, shift); |
| 499 | case 20: |
| 500 | return new TKeypressEvent(kbF9, alt, ctrl, shift); |
| 501 | case 21: |
| 502 | return new TKeypressEvent(kbF10, alt, ctrl, shift); |
| 503 | case 23: |
| 504 | return new TKeypressEvent(kbF11, alt, ctrl, shift); |
| 505 | case 24: |
| 506 | return new TKeypressEvent(kbF12, alt, ctrl, shift); |
| 507 | default: |
| 508 | // Unknown |
| 509 | return null; |
| 510 | } |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * Produce mouse events based on "Any event tracking" and UTF-8 |
| 515 | * coordinates. See |
| 516 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
| 517 | * |
| 518 | * @return a MOUSE_MOTION, MOUSE_UP, or MOUSE_DOWN event |
| 519 | */ |
| 520 | private TInputEvent parseMouse() { |
| 521 | int buttons = params.get(0).charAt(0) - 32; |
| 522 | int x = params.get(0).charAt(1) - 32 - 1; |
| 523 | int y = params.get(0).charAt(2) - 32 - 1; |
| 524 | |
| 525 | // Clamp X and Y to the physical screen coordinates. |
| 526 | if (x >= windowResize.getWidth()) { |
| 527 | x = windowResize.getWidth() - 1; |
| 528 | } |
| 529 | if (y >= windowResize.getHeight()) { |
| 530 | y = windowResize.getHeight() - 1; |
| 531 | } |
| 532 | |
| 533 | TMouseEvent.Type eventType = TMouseEvent.Type.MOUSE_DOWN; |
| 534 | boolean eventMouse1 = false; |
| 535 | boolean eventMouse2 = false; |
| 536 | boolean eventMouse3 = false; |
| 537 | boolean eventMouseWheelUp = false; |
| 538 | boolean eventMouseWheelDown = false; |
| 539 | |
| 540 | // System.err.printf("buttons: %04x\r\n", buttons); |
| 541 | |
| 542 | switch (buttons) { |
| 543 | case 0: |
| 544 | eventMouse1 = true; |
| 545 | mouse1 = true; |
| 546 | break; |
| 547 | case 1: |
| 548 | eventMouse2 = true; |
| 549 | mouse2 = true; |
| 550 | break; |
| 551 | case 2: |
| 552 | eventMouse3 = true; |
| 553 | mouse3 = true; |
| 554 | break; |
| 555 | case 3: |
| 556 | // Release or Move |
| 557 | if (!mouse1 && !mouse2 && !mouse3) { |
| 558 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 559 | } else { |
| 560 | eventType = TMouseEvent.Type.MOUSE_UP; |
| 561 | } |
| 562 | if (mouse1) { |
| 563 | mouse1 = false; |
| 564 | eventMouse1 = true; |
| 565 | } |
| 566 | if (mouse2) { |
| 567 | mouse2 = false; |
| 568 | eventMouse2 = true; |
| 569 | } |
| 570 | if (mouse3) { |
| 571 | mouse3 = false; |
| 572 | eventMouse3 = true; |
| 573 | } |
| 574 | break; |
| 575 | |
| 576 | case 32: |
| 577 | // Dragging with mouse1 down |
| 578 | eventMouse1 = true; |
| 579 | mouse1 = true; |
| 580 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 581 | break; |
| 582 | |
| 583 | case 33: |
| 584 | // Dragging with mouse2 down |
| 585 | eventMouse2 = true; |
| 586 | mouse2 = true; |
| 587 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 588 | break; |
| 589 | |
| 590 | case 34: |
| 591 | // Dragging with mouse3 down |
| 592 | eventMouse3 = true; |
| 593 | mouse3 = true; |
| 594 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 595 | break; |
| 596 | |
| 597 | case 96: |
| 598 | // Dragging with mouse2 down after wheelUp |
| 599 | eventMouse2 = true; |
| 600 | mouse2 = true; |
| 601 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 602 | break; |
| 603 | |
| 604 | case 97: |
| 605 | // Dragging with mouse2 down after wheelDown |
| 606 | eventMouse2 = true; |
| 607 | mouse2 = true; |
| 608 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 609 | break; |
| 610 | |
| 611 | case 64: |
| 612 | eventMouseWheelUp = true; |
| 613 | break; |
| 614 | |
| 615 | case 65: |
| 616 | eventMouseWheelDown = true; |
| 617 | break; |
| 618 | |
| 619 | default: |
| 620 | // Unknown, just make it motion |
| 621 | eventType = TMouseEvent.Type.MOUSE_MOTION; |
| 622 | break; |
| 623 | } |
| 624 | return new TMouseEvent(eventType, x, y, x, y, |
| 625 | eventMouse1, eventMouse2, eventMouse3, |
| 626 | eventMouseWheelUp, eventMouseWheelDown); |
| 627 | } |
| 628 | |
| 629 | /** |
| 630 | * Return any events in the IO queue. |
| 631 | * |
| 632 | * @param queue list to append new events to |
| 633 | */ |
| 634 | public void getEvents(final List<TInputEvent> queue) { |
| 635 | synchronized (eventQueue) { |
| 636 | if (eventQueue.size() > 0) { |
| 637 | synchronized (queue) { |
| 638 | queue.addAll(eventQueue); |
| 639 | } |
| 640 | eventQueue.clear(); |
| 641 | } |
| 642 | } |
| 643 | } |
| 644 | |
| 645 | /** |
| 646 | * Return any events in the IO queue due to timeout. |
| 647 | * |
| 648 | * @param queue list to append new events to |
| 649 | */ |
| 650 | public void getIdleEvents(final List<TInputEvent> queue) { |
| 651 | |
| 652 | // Check for new window size |
| 653 | sessionInfo.queryWindowSize(); |
| 654 | int newWidth = sessionInfo.getWindowWidth(); |
| 655 | int newHeight = sessionInfo.getWindowHeight(); |
| 656 | if ((newWidth != windowResize.getWidth()) |
| 657 | || (newHeight != windowResize.getHeight()) |
| 658 | ) { |
| 659 | TResizeEvent event = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 660 | newWidth, newHeight); |
| 661 | windowResize = new TResizeEvent(TResizeEvent.Type.SCREEN, |
| 662 | newWidth, newHeight); |
| 663 | synchronized (eventQueue) { |
| 664 | eventQueue.add(event); |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | synchronized (eventQueue) { |
| 669 | if (eventQueue.size() > 0) { |
| 670 | synchronized (queue) { |
| 671 | queue.addAll(eventQueue); |
| 672 | } |
| 673 | eventQueue.clear(); |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | /** |
| 679 | * Parses the next character of input to see if an InputEvent is |
| 680 | * fully here. |
| 681 | * |
| 682 | * @param events list to append new events to |
| 683 | * @param ch Unicode code point |
| 684 | */ |
| 685 | private void processChar(final List<TInputEvent> events, final char ch) { |
| 686 | |
| 687 | // ESCDELAY type timeout |
| 688 | Date now = new Date(); |
| 689 | if (state == ParseState.ESCAPE) { |
| 690 | long escDelay = now.getTime() - escapeTime; |
| 691 | if (escDelay > 250) { |
| 692 | // After 0.25 seconds, assume a true escape character |
| 693 | events.add(controlChar((char)0x1B, false)); |
| 694 | reset(); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | // TKeypress fields |
| 699 | boolean ctrl = false; |
| 700 | boolean alt = false; |
| 701 | boolean shift = false; |
| 702 | char keyCh = ch; |
| 703 | TKeypress key; |
| 704 | |
| 705 | // System.err.printf("state: %s ch %c\r\n", state, ch); |
| 706 | |
| 707 | switch (state) { |
| 708 | case GROUND: |
| 709 | |
| 710 | if (ch == 0x1B) { |
| 711 | state = ParseState.ESCAPE; |
| 712 | escapeTime = now.getTime(); |
| 713 | return; |
| 714 | } |
| 715 | |
| 716 | if (ch <= 0x1F) { |
| 717 | // Control character |
| 718 | events.add(controlChar(ch, false)); |
| 719 | reset(); |
| 720 | return; |
| 721 | } |
| 722 | |
| 723 | if (ch >= 0x20) { |
| 724 | // Normal character |
| 725 | events.add(new TKeypressEvent(false, 0, ch, |
| 726 | false, false, false)); |
| 727 | reset(); |
| 728 | return; |
| 729 | } |
| 730 | |
| 731 | break; |
| 732 | |
| 733 | case ESCAPE: |
| 734 | if (ch <= 0x1F) { |
| 735 | // ALT-Control character |
| 736 | events.add(controlChar(ch, true)); |
| 737 | reset(); |
| 738 | return; |
| 739 | } |
| 740 | |
| 741 | if (ch == 'O') { |
| 742 | // This will be one of the function keys |
| 743 | state = ParseState.ESCAPE_INTERMEDIATE; |
| 744 | return; |
| 745 | } |
| 746 | |
| 747 | // '[' goes to CSI_ENTRY |
| 748 | if (ch == '[') { |
| 749 | state = ParseState.CSI_ENTRY; |
| 750 | return; |
| 751 | } |
| 752 | |
| 753 | // Everything else is assumed to be Alt-keystroke |
| 754 | if ((ch >= 'A') && (ch <= 'Z')) { |
| 755 | shift = true; |
| 756 | } |
| 757 | alt = true; |
| 758 | events.add(new TKeypressEvent(false, 0, ch, alt, ctrl, shift)); |
| 759 | reset(); |
| 760 | return; |
| 761 | |
| 762 | case ESCAPE_INTERMEDIATE: |
| 763 | if ((ch >= 'P') && (ch <= 'S')) { |
| 764 | // Function key |
| 765 | switch (ch) { |
| 766 | case 'P': |
| 767 | events.add(new TKeypressEvent(kbF1)); |
| 768 | break; |
| 769 | case 'Q': |
| 770 | events.add(new TKeypressEvent(kbF2)); |
| 771 | break; |
| 772 | case 'R': |
| 773 | events.add(new TKeypressEvent(kbF3)); |
| 774 | break; |
| 775 | case 'S': |
| 776 | events.add(new TKeypressEvent(kbF4)); |
| 777 | break; |
| 778 | default: |
| 779 | break; |
| 780 | } |
| 781 | reset(); |
| 782 | return; |
| 783 | } |
| 784 | |
| 785 | // Unknown keystroke, ignore |
| 786 | reset(); |
| 787 | return; |
| 788 | |
| 789 | case CSI_ENTRY: |
| 790 | // Numbers - parameter values |
| 791 | if ((ch >= '0') && (ch <= '9')) { |
| 792 | params.set(paramI, params.get(paramI) + ch); |
| 793 | state = ParseState.CSI_PARAM; |
| 794 | return; |
| 795 | } |
| 796 | // Parameter separator |
| 797 | if (ch == ';') { |
| 798 | paramI++; |
| 799 | params.set(paramI, ""); |
| 800 | return; |
| 801 | } |
| 802 | |
| 803 | if ((ch >= 0x30) && (ch <= 0x7E)) { |
| 804 | switch (ch) { |
| 805 | case 'A': |
| 806 | // Up |
| 807 | if (params.size() > 1) { |
| 808 | if (params.get(1).equals("2")) { |
| 809 | shift = true; |
| 810 | } |
| 811 | if (params.get(1).equals("5")) { |
| 812 | ctrl = true; |
| 813 | } |
| 814 | if (params.get(1).equals("3")) { |
| 815 | alt = true; |
| 816 | } |
| 817 | } |
| 818 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
| 819 | reset(); |
| 820 | return; |
| 821 | case 'B': |
| 822 | // Down |
| 823 | if (params.size() > 1) { |
| 824 | if (params.get(1).equals("2")) { |
| 825 | shift = true; |
| 826 | } |
| 827 | if (params.get(1).equals("5")) { |
| 828 | ctrl = true; |
| 829 | } |
| 830 | if (params.get(1).equals("3")) { |
| 831 | alt = true; |
| 832 | } |
| 833 | } |
| 834 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
| 835 | reset(); |
| 836 | return; |
| 837 | case 'C': |
| 838 | // Right |
| 839 | if (params.size() > 1) { |
| 840 | if (params.get(1).equals("2")) { |
| 841 | shift = true; |
| 842 | } |
| 843 | if (params.get(1).equals("5")) { |
| 844 | ctrl = true; |
| 845 | } |
| 846 | if (params.get(1).equals("3")) { |
| 847 | alt = true; |
| 848 | } |
| 849 | } |
| 850 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
| 851 | reset(); |
| 852 | return; |
| 853 | case 'D': |
| 854 | // Left |
| 855 | if (params.size() > 1) { |
| 856 | if (params.get(1).equals("2")) { |
| 857 | shift = true; |
| 858 | } |
| 859 | if (params.get(1).equals("5")) { |
| 860 | ctrl = true; |
| 861 | } |
| 862 | if (params.get(1).equals("3")) { |
| 863 | alt = true; |
| 864 | } |
| 865 | } |
| 866 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
| 867 | reset(); |
| 868 | return; |
| 869 | case 'H': |
| 870 | // Home |
| 871 | events.add(new TKeypressEvent(kbHome)); |
| 872 | reset(); |
| 873 | return; |
| 874 | case 'F': |
| 875 | // End |
| 876 | events.add(new TKeypressEvent(kbEnd)); |
| 877 | reset(); |
| 878 | return; |
| 879 | case 'Z': |
| 880 | // CBT - Cursor backward X tab stops (default 1) |
| 881 | events.add(new TKeypressEvent(kbBackTab)); |
| 882 | reset(); |
| 883 | return; |
| 884 | case 'M': |
| 885 | // Mouse position |
| 886 | state = ParseState.MOUSE; |
| 887 | return; |
| 888 | default: |
| 889 | break; |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | // Unknown keystroke, ignore |
| 894 | reset(); |
| 895 | return; |
| 896 | |
| 897 | case CSI_PARAM: |
| 898 | // Numbers - parameter values |
| 899 | if ((ch >= '0') && (ch <= '9')) { |
| 900 | params.set(paramI, params.get(paramI) + ch); |
| 901 | state = ParseState.CSI_PARAM; |
| 902 | return; |
| 903 | } |
| 904 | // Parameter separator |
| 905 | if (ch == ';') { |
| 906 | paramI++; |
| 907 | params.set(paramI, ""); |
| 908 | return; |
| 909 | } |
| 910 | |
| 911 | if (ch == '~') { |
| 912 | events.add(csiFnKey()); |
| 913 | reset(); |
| 914 | return; |
| 915 | } |
| 916 | |
| 917 | if ((ch >= 0x30) && (ch <= 0x7E)) { |
| 918 | switch (ch) { |
| 919 | case 'A': |
| 920 | // Up |
| 921 | if (params.size() > 1) { |
| 922 | if (params.get(1).equals("2")) { |
| 923 | shift = true; |
| 924 | } |
| 925 | if (params.get(1).equals("5")) { |
| 926 | ctrl = true; |
| 927 | } |
| 928 | if (params.get(1).equals("3")) { |
| 929 | alt = true; |
| 930 | } |
| 931 | } |
| 932 | events.add(new TKeypressEvent(kbUp, alt, ctrl, shift)); |
| 933 | reset(); |
| 934 | return; |
| 935 | case 'B': |
| 936 | // Down |
| 937 | if (params.size() > 1) { |
| 938 | if (params.get(1).equals("2")) { |
| 939 | shift = true; |
| 940 | } |
| 941 | if (params.get(1).equals("5")) { |
| 942 | ctrl = true; |
| 943 | } |
| 944 | if (params.get(1).equals("3")) { |
| 945 | alt = true; |
| 946 | } |
| 947 | } |
| 948 | events.add(new TKeypressEvent(kbDown, alt, ctrl, shift)); |
| 949 | reset(); |
| 950 | return; |
| 951 | case 'C': |
| 952 | // Right |
| 953 | if (params.size() > 1) { |
| 954 | if (params.get(1).equals("2")) { |
| 955 | shift = true; |
| 956 | } |
| 957 | if (params.get(1).equals("5")) { |
| 958 | ctrl = true; |
| 959 | } |
| 960 | if (params.get(1).equals("3")) { |
| 961 | alt = true; |
| 962 | } |
| 963 | } |
| 964 | events.add(new TKeypressEvent(kbRight, alt, ctrl, shift)); |
| 965 | reset(); |
| 966 | return; |
| 967 | case 'D': |
| 968 | // Left |
| 969 | if (params.size() > 1) { |
| 970 | if (params.get(1).equals("2")) { |
| 971 | shift = true; |
| 972 | } |
| 973 | if (params.get(1).equals("5")) { |
| 974 | ctrl = true; |
| 975 | } |
| 976 | if (params.get(1).equals("3")) { |
| 977 | alt = true; |
| 978 | } |
| 979 | } |
| 980 | events.add(new TKeypressEvent(kbLeft, alt, ctrl, shift)); |
| 981 | reset(); |
| 982 | return; |
| 983 | default: |
| 984 | break; |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | // Unknown keystroke, ignore |
| 989 | reset(); |
| 990 | return; |
| 991 | |
| 992 | case MOUSE: |
| 993 | params.set(0, params.get(paramI) + ch); |
| 994 | if (params.get(0).length() == 3) { |
| 995 | // We have enough to generate a mouse event |
| 996 | events.add(parseMouse()); |
| 997 | reset(); |
| 998 | } |
| 999 | return; |
| 1000 | |
| 1001 | default: |
| 1002 | break; |
| 1003 | } |
| 1004 | |
| 1005 | // This "should" be impossible to reach |
| 1006 | return; |
| 1007 | } |
| 1008 | |
| 1009 | /** |
| 1010 | * Tell (u)xterm that we want alt- keystrokes to send escape + character |
| 1011 | * rather than set the 8th bit. Anyone who wants UTF8 should want this |
| 1012 | * enabled. |
| 1013 | * |
| 1014 | * @param on if true, enable metaSendsEscape |
| 1015 | * @return the string to emit to xterm |
| 1016 | */ |
| 1017 | public String xtermMetaSendsEscape(final boolean on) { |
| 1018 | if (on) { |
| 1019 | return "\033[?1036h\033[?1034l"; |
| 1020 | } |
| 1021 | return "\033[?1036l"; |
| 1022 | } |
| 1023 | |
| 1024 | /** |
| 1025 | * Convert a list of SGR parameters into a full escape sequence. This |
| 1026 | * also eliminates a trailing ';' which would otherwise reset everything |
| 1027 | * to white-on-black not-bold. |
| 1028 | * |
| 1029 | * @param str string of parameters, e.g. "31;1;" |
| 1030 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1031 | * e.g. "\033[31;1m" |
| 1032 | */ |
| 1033 | public String addHeaderSGR(String str) { |
| 1034 | if (str.length() > 0) { |
| 1035 | // Nix any trailing ';' because that resets all attributes |
| 1036 | while (str.endsWith(":")) { |
| 1037 | str = str.substring(0, str.length() - 1); |
| 1038 | } |
| 1039 | } |
| 1040 | return "\033[" + str + "m"; |
| 1041 | } |
| 1042 | |
| 1043 | /** |
| 1044 | * Create a SGR parameter sequence for a single color change. |
| 1045 | * |
| 1046 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
| 1047 | * @param foreground if true, this is a foreground color |
| 1048 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1049 | * e.g. "\033[42m" |
| 1050 | */ |
| 1051 | public String color(final Color color, final boolean foreground) { |
| 1052 | return color(color, foreground, true); |
| 1053 | } |
| 1054 | |
| 1055 | /** |
| 1056 | * Create a SGR parameter sequence for a single color change. |
| 1057 | * |
| 1058 | * @param color one of the Color.WHITE, Color.BLUE, etc. constants |
| 1059 | * @param foreground if true, this is a foreground color |
| 1060 | * @param header if true, make the full header, otherwise just emit the |
| 1061 | * color parameter e.g. "42;" |
| 1062 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1063 | * e.g. "\033[42m" |
| 1064 | */ |
| 1065 | public String color(final Color color, final boolean foreground, |
| 1066 | final boolean header) { |
| 1067 | |
| 1068 | int ecmaColor = color.getValue(); |
| 1069 | |
| 1070 | // Convert Color.* values to SGR numerics |
| 1071 | if (foreground) { |
| 1072 | ecmaColor += 30; |
| 1073 | } else { |
| 1074 | ecmaColor += 40; |
| 1075 | } |
| 1076 | |
| 1077 | if (header) { |
| 1078 | return String.format("\033[%dm", ecmaColor); |
| 1079 | } else { |
| 1080 | return String.format("%d;", ecmaColor); |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | /** |
| 1085 | * Create a SGR parameter sequence for both foreground and |
| 1086 | * background color change. |
| 1087 | * |
| 1088 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1089 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1090 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1091 | * e.g. "\033[31;42m" |
| 1092 | */ |
| 1093 | public String color(final Color foreColor, final Color backColor) { |
| 1094 | return color(foreColor, backColor, true); |
| 1095 | } |
| 1096 | |
| 1097 | /** |
| 1098 | * Create a SGR parameter sequence for both foreground and |
| 1099 | * background color change. |
| 1100 | * |
| 1101 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1102 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1103 | * @param header if true, make the full header, otherwise just emit the |
| 1104 | * color parameter e.g. "31;42;" |
| 1105 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1106 | * e.g. "\033[31;42m" |
| 1107 | */ |
| 1108 | public String color(final Color foreColor, final Color backColor, |
| 1109 | final boolean header) { |
| 1110 | |
| 1111 | int ecmaForeColor = foreColor.getValue(); |
| 1112 | int ecmaBackColor = backColor.getValue(); |
| 1113 | |
| 1114 | // Convert Color.* values to SGR numerics |
| 1115 | ecmaBackColor += 40; |
| 1116 | ecmaForeColor += 30; |
| 1117 | |
| 1118 | if (header) { |
| 1119 | return String.format("\033[%d;%dm", ecmaForeColor, ecmaBackColor); |
| 1120 | } else { |
| 1121 | return String.format("%d;%d;", ecmaForeColor, ecmaBackColor); |
| 1122 | } |
| 1123 | } |
| 1124 | |
| 1125 | /** |
| 1126 | * Create a SGR parameter sequence for foreground, background, and |
| 1127 | * several attributes. This sequence first resets all attributes to |
| 1128 | * default, then sets attributes as per the parameters. |
| 1129 | * |
| 1130 | * @param foreColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1131 | * @param backColor one of the Color.WHITE, Color.BLUE, etc. constants |
| 1132 | * @param bold if true, set bold |
| 1133 | * @param reverse if true, set reverse |
| 1134 | * @param blink if true, set blink |
| 1135 | * @param underline if true, set underline |
| 1136 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1137 | * e.g. "\033[0;1;31;42m" |
| 1138 | */ |
| 1139 | public String color(final Color foreColor, final Color backColor, |
| 1140 | final boolean bold, final boolean reverse, final boolean blink, |
| 1141 | final boolean underline) { |
| 1142 | |
| 1143 | int ecmaForeColor = foreColor.getValue(); |
| 1144 | int ecmaBackColor = backColor.getValue(); |
| 1145 | |
| 1146 | // Convert Color.* values to SGR numerics |
| 1147 | ecmaBackColor += 40; |
| 1148 | ecmaForeColor += 30; |
| 1149 | |
| 1150 | StringBuilder sb = new StringBuilder(); |
| 1151 | if ( bold && reverse && blink && !underline ) { |
| 1152 | sb.append("\033[0;1;7;5;"); |
| 1153 | } else if ( bold && reverse && !blink && !underline ) { |
| 1154 | sb.append("\033[0;1;7;"); |
| 1155 | } else if ( !bold && reverse && blink && !underline ) { |
| 1156 | sb.append("\033[0;7;5;"); |
| 1157 | } else if ( bold && !reverse && blink && !underline ) { |
| 1158 | sb.append("\033[0;1;5;"); |
| 1159 | } else if ( bold && !reverse && !blink && !underline ) { |
| 1160 | sb.append("\033[0;1;"); |
| 1161 | } else if ( !bold && reverse && !blink && !underline ) { |
| 1162 | sb.append("\033[0;7;"); |
| 1163 | } else if ( !bold && !reverse && blink && !underline) { |
| 1164 | sb.append("\033[0;5;"); |
| 1165 | } else if ( bold && reverse && blink && underline ) { |
| 1166 | sb.append("\033[0;1;7;5;4;"); |
| 1167 | } else if ( bold && reverse && !blink && underline ) { |
| 1168 | sb.append("\033[0;1;7;4;"); |
| 1169 | } else if ( !bold && reverse && blink && underline ) { |
| 1170 | sb.append("\033[0;7;5;4;"); |
| 1171 | } else if ( bold && !reverse && blink && underline ) { |
| 1172 | sb.append("\033[0;1;5;4;"); |
| 1173 | } else if ( bold && !reverse && !blink && underline ) { |
| 1174 | sb.append("\033[0;1;4;"); |
| 1175 | } else if ( !bold && reverse && !blink && underline ) { |
| 1176 | sb.append("\033[0;7;4;"); |
| 1177 | } else if ( !bold && !reverse && blink && underline) { |
| 1178 | sb.append("\033[0;5;4;"); |
| 1179 | } else if ( !bold && !reverse && !blink && underline) { |
| 1180 | sb.append("\033[0;4;"); |
| 1181 | } else { |
| 1182 | assert (!bold && !reverse && !blink && !underline); |
| 1183 | sb.append("\033[0;"); |
| 1184 | } |
| 1185 | sb.append(String.format("%d;%dm", ecmaForeColor, ecmaBackColor)); |
| 1186 | return sb.toString(); |
| 1187 | } |
| 1188 | |
| 1189 | /** |
| 1190 | * Create a SGR parameter sequence for enabling reverse color. |
| 1191 | * |
| 1192 | * @param on if true, turn on reverse |
| 1193 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1194 | * e.g. "\033[7m" |
| 1195 | */ |
| 1196 | public String reverse(final boolean on) { |
| 1197 | if (on) { |
| 1198 | return "\033[7m"; |
| 1199 | } |
| 1200 | return "\033[27m"; |
| 1201 | } |
| 1202 | |
| 1203 | /** |
| 1204 | * Create a SGR parameter sequence to reset to defaults. |
| 1205 | * |
| 1206 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1207 | * e.g. "\033[0m" |
| 1208 | */ |
| 1209 | public String normal() { |
| 1210 | return normal(true); |
| 1211 | } |
| 1212 | |
| 1213 | /** |
| 1214 | * Create a SGR parameter sequence to reset to defaults. |
| 1215 | * |
| 1216 | * @param header if true, make the full header, otherwise just emit the |
| 1217 | * bare parameter e.g. "0;" |
| 1218 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1219 | * e.g. "\033[0m" |
| 1220 | */ |
| 1221 | public String normal(final boolean header) { |
| 1222 | if (header) { |
| 1223 | return "\033[0;37;40m"; |
| 1224 | } |
| 1225 | return "0;37;40"; |
| 1226 | } |
| 1227 | |
| 1228 | /** |
| 1229 | * Create a SGR parameter sequence for enabling boldface. |
| 1230 | * |
| 1231 | * @param on if true, turn on bold |
| 1232 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1233 | * e.g. "\033[1m" |
| 1234 | */ |
| 1235 | public String bold(final boolean on) { |
| 1236 | return bold(on, true); |
| 1237 | } |
| 1238 | |
| 1239 | /** |
| 1240 | * Create a SGR parameter sequence for enabling boldface. |
| 1241 | * |
| 1242 | * @param on if true, turn on bold |
| 1243 | * @param header if true, make the full header, otherwise just emit the |
| 1244 | * bare parameter e.g. "1;" |
| 1245 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1246 | * e.g. "\033[1m" |
| 1247 | */ |
| 1248 | public String bold(final boolean on, final boolean header) { |
| 1249 | if (header) { |
| 1250 | if (on) { |
| 1251 | return "\033[1m"; |
| 1252 | } |
| 1253 | return "\033[22m"; |
| 1254 | } |
| 1255 | if (on) { |
| 1256 | return "1;"; |
| 1257 | } |
| 1258 | return "22;"; |
| 1259 | } |
| 1260 | |
| 1261 | /** |
| 1262 | * Create a SGR parameter sequence for enabling blinking text. |
| 1263 | * |
| 1264 | * @param on if true, turn on blink |
| 1265 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1266 | * e.g. "\033[5m" |
| 1267 | */ |
| 1268 | public String blink(final boolean on) { |
| 1269 | return blink(on, true); |
| 1270 | } |
| 1271 | |
| 1272 | /** |
| 1273 | * Create a SGR parameter sequence for enabling blinking text. |
| 1274 | * |
| 1275 | * @param on if true, turn on blink |
| 1276 | * @param header if true, make the full header, otherwise just emit the |
| 1277 | * bare parameter e.g. "5;" |
| 1278 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1279 | * e.g. "\033[5m" |
| 1280 | */ |
| 1281 | public String blink(final boolean on, final boolean header) { |
| 1282 | if (header) { |
| 1283 | if (on) { |
| 1284 | return "\033[5m"; |
| 1285 | } |
| 1286 | return "\033[25m"; |
| 1287 | } |
| 1288 | if (on) { |
| 1289 | return "5;"; |
| 1290 | } |
| 1291 | return "25;"; |
| 1292 | } |
| 1293 | |
| 1294 | /** |
| 1295 | * Create a SGR parameter sequence for enabling underline / underscored |
| 1296 | * text. |
| 1297 | * |
| 1298 | * @param on if true, turn on underline |
| 1299 | * @return the string to emit to an ANSI / ECMA-style terminal, |
| 1300 | * e.g. "\033[4m" |
| 1301 | */ |
| 1302 | public String underline(final boolean on) { |
| 1303 | if (on) { |
| 1304 | return "\033[4m"; |
| 1305 | } |
| 1306 | return "\033[24m"; |
| 1307 | } |
| 1308 | |
| 1309 | /** |
| 1310 | * Create a SGR parameter sequence for enabling the visible cursor. |
| 1311 | * |
| 1312 | * @param on if true, turn on cursor |
| 1313 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1314 | */ |
| 1315 | public String cursor(final boolean on) { |
| 1316 | if (on && !cursorOn) { |
| 1317 | cursorOn = true; |
| 1318 | return "\033[?25h"; |
| 1319 | } |
| 1320 | if (!on && cursorOn) { |
| 1321 | cursorOn = false; |
| 1322 | return "\033[?25l"; |
| 1323 | } |
| 1324 | return ""; |
| 1325 | } |
| 1326 | |
| 1327 | /** |
| 1328 | * Clear the entire screen. Because some terminals use back-color-erase, |
| 1329 | * set the color to white-on-black beforehand. |
| 1330 | * |
| 1331 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1332 | */ |
| 1333 | public String clearAll() { |
| 1334 | return "\033[0;37;40m\033[2J"; |
| 1335 | } |
| 1336 | |
| 1337 | /** |
| 1338 | * Clear the line from the cursor (inclusive) to the end of the screen. |
| 1339 | * Because some terminals use back-color-erase, set the color to |
| 1340 | * white-on-black beforehand. |
| 1341 | * |
| 1342 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1343 | */ |
| 1344 | public String clearRemainingLine() { |
| 1345 | return "\033[0;37;40m\033[K"; |
| 1346 | } |
| 1347 | |
| 1348 | /** |
| 1349 | * Clear the line up the cursor (inclusive). Because some terminals use |
| 1350 | * back-color-erase, set the color to white-on-black beforehand. |
| 1351 | * |
| 1352 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1353 | */ |
| 1354 | public String clearPreceedingLine() { |
| 1355 | return "\033[0;37;40m\033[1K"; |
| 1356 | } |
| 1357 | |
| 1358 | /** |
| 1359 | * Clear the line. Because some terminals use back-color-erase, set the |
| 1360 | * color to white-on-black beforehand. |
| 1361 | * |
| 1362 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1363 | */ |
| 1364 | public String clearLine() { |
| 1365 | return "\033[0;37;40m\033[2K"; |
| 1366 | } |
| 1367 | |
| 1368 | /** |
| 1369 | * Move the cursor to the top-left corner. |
| 1370 | * |
| 1371 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1372 | */ |
| 1373 | public String home() { |
| 1374 | return "\033[H"; |
| 1375 | } |
| 1376 | |
| 1377 | /** |
| 1378 | * Move the cursor to (x, y). |
| 1379 | * |
| 1380 | * @param x column coordinate. 0 is the left-most column. |
| 1381 | * @param y row coordinate. 0 is the top-most row. |
| 1382 | * @return the string to emit to an ANSI / ECMA-style terminal |
| 1383 | */ |
| 1384 | public String gotoXY(final int x, final int y) { |
| 1385 | return String.format("\033[%d;%dH", y + 1, x + 1); |
| 1386 | } |
| 1387 | |
| 1388 | /** |
| 1389 | * Tell (u)xterm that we want to receive mouse events based on "Any event |
| 1390 | * tracking" and UTF-8 coordinates. See |
| 1391 | * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking |
| 1392 | * |
| 1393 | * Note that this also sets the alternate/primary screen buffer. |
| 1394 | * |
| 1395 | * @param on If true, enable mouse report and use the alternate screen |
| 1396 | * buffer. If false disable mouse reporting and use the primary screen |
| 1397 | * buffer. |
| 1398 | * @return the string to emit to xterm |
| 1399 | */ |
| 1400 | public String mouse(final boolean on) { |
| 1401 | if (on) { |
| 1402 | return "\033[?1003;1005h\033[?1049h"; |
| 1403 | } |
| 1404 | return "\033[?1003;1005l\033[?1049l"; |
| 1405 | } |
| 1406 | |
| 1407 | /** |
| 1408 | * Read function runs on a separate thread. |
| 1409 | */ |
| 1410 | public void run() { |
| 1411 | boolean done = false; |
| 1412 | // available() will often return > 1, so we need to read in chunks to |
| 1413 | // stay caught up. |
| 1414 | char [] readBuffer = new char[128]; |
| 1415 | List<TInputEvent> events = new LinkedList<TInputEvent>(); |
| 1416 | |
| 1417 | while (!done && !stopReaderThread) { |
| 1418 | try { |
| 1419 | // We assume that if inputStream has bytes available, then |
| 1420 | // input won't block on read(). |
| 1421 | int n = inputStream.available(); |
| 1422 | if (n > 0) { |
| 1423 | if (readBuffer.length < n) { |
| 1424 | // The buffer wasn't big enough, make it huger |
| 1425 | readBuffer = new char[readBuffer.length * 2]; |
| 1426 | } |
| 1427 | |
| 1428 | int rc = input.read(readBuffer, 0, n); |
| 1429 | // System.err.printf("read() %d", rc); System.err.flush(); |
| 1430 | if (rc == -1) { |
| 1431 | // This is EOF |
| 1432 | done = true; |
| 1433 | } else { |
| 1434 | for (int i = 0; i < rc; i++) { |
| 1435 | int ch = readBuffer[i]; |
| 1436 | processChar(events, (char)ch); |
| 1437 | if (events.size() > 0) { |
| 1438 | // Add to the queue for the backend thread to |
| 1439 | // be able to obtain. |
| 1440 | synchronized (eventQueue) { |
| 1441 | eventQueue.addAll(events); |
| 1442 | } |
| 1443 | // Now wake up the backend |
| 1444 | synchronized (this) { |
| 1445 | this.notifyAll(); |
| 1446 | } |
| 1447 | events.clear(); |
| 1448 | } |
| 1449 | } |
| 1450 | } |
| 1451 | } else { |
| 1452 | // Wait 10 millis for more data |
| 1453 | Thread.sleep(10); |
| 1454 | } |
| 1455 | // System.err.println("end while loop"); System.err.flush(); |
| 1456 | } catch (InterruptedException e) { |
| 1457 | // SQUASH |
| 1458 | } catch (IOException e) { |
| 1459 | e.printStackTrace(); |
| 1460 | done = true; |
| 1461 | } |
| 1462 | } // while ((done == false) && (stopReaderThread == false)) |
| 1463 | // System.err.println("*** run() exiting..."); System.err.flush(); |
| 1464 | } |
| 1465 | |
| 1466 | } |