1 /* 2 * Copyright 2001-2013, Haiku, Inc. 3 * Copyright (c) 2003-4 Kian Duffy <myob@users.sourceforge.net> 4 * Parts Copyright (C) 1998,99 Kazuho Okui and Takashi Murai. 5 * Distributed under the terms of the MIT license. 6 * 7 * Authors: 8 * Kian Duffy, myob@users.sourceforge.net 9 * Simon South, simon@simonsouth.net 10 * Siarzhuk Zharski, zharik@gmx.li 11 */ 12 13 14 //! Escape sequence parse and character encoding. 15 16 17 #include "TermParse.h" 18 19 #include <ctype.h> 20 #include <errno.h> 21 #include <stdio.h> 22 #include <stdlib.h> 23 #include <signal.h> 24 #include <string.h> 25 #include <unistd.h> 26 27 #include <Autolock.h> 28 #include <Beep.h> 29 #include <Catalog.h> 30 #include <Locale.h> 31 #include <Message.h> 32 #include <UTF8.h> 33 34 #include "Colors.h" 35 #include "TermConst.h" 36 #include "TerminalBuffer.h" 37 #include "VTparse.h" 38 39 40 extern int gUTF8GroundTable[]; /* UTF8 Ground table */ 41 extern int gISO8859GroundTable[]; /* ISO8859 & EUC Ground table */ 42 extern int gWinCPGroundTable[]; /* Windows cp1252, cp1251, koi-8r */ 43 extern int gSJISGroundTable[]; /* Shift-JIS Ground table */ 44 45 extern int gEscTable[]; /* ESC */ 46 extern int gCsiTable[]; /* ESC [ */ 47 extern int gDecTable[]; /* ESC [ ? */ 48 extern int gScrTable[]; /* ESC # */ 49 extern int gIgnoreTable[]; /* ignore table */ 50 extern int gIesTable[]; /* ignore ESC table */ 51 extern int gEscIgnoreTable[]; /* ESC ignore table */ 52 53 extern const char* gLineDrawGraphSet[]; /* may be used for G0, G1, G2, G3 */ 54 55 #define DEFAULT -1 56 #define NPARAM 10 // Max parameters 57 58 59 //! Get char from pty reader buffer. 60 inline uchar 61 TermParse::_NextParseChar() 62 { 63 if (fParserBufferOffset >= fParserBufferSize) { 64 // parser buffer empty 65 status_t error = _ReadParserBuffer(); 66 if (error != B_OK) 67 throw error; 68 } 69 70 #ifdef USE_DEBUG_SNAPSHOTS 71 fBuffer->CaptureChar(fParserBuffer[fParserBufferOffset]); 72 #endif 73 74 return fParserBuffer[fParserBufferOffset++]; 75 } 76 77 78 TermParse::TermParse(int fd) 79 : 80 fFd(fd), 81 fParseThread(-1), 82 fReaderThread(-1), 83 fReaderSem(-1), 84 fReaderLocker(-1), 85 fBufferPosition(0), 86 fReadBufferSize(0), 87 fParserBufferSize(0), 88 fParserBufferOffset(0), 89 fBuffer(NULL), 90 fQuitting(true) 91 { 92 memset(fReadBuffer, 0, READ_BUF_SIZE); 93 memset(fParserBuffer, 0, ESC_PARSER_BUFFER_SIZE); 94 } 95 96 97 TermParse::~TermParse() 98 { 99 StopThreads(); 100 } 101 102 103 status_t 104 TermParse::StartThreads(TerminalBuffer *buffer) 105 { 106 if (fBuffer != NULL) 107 return B_ERROR; 108 109 fQuitting = false; 110 fBuffer = buffer; 111 112 status_t status = _InitPtyReader(); 113 if (status < B_OK) { 114 fBuffer = NULL; 115 return status; 116 } 117 118 status = _InitTermParse(); 119 if (status < B_OK) { 120 _StopPtyReader(); 121 fBuffer = NULL; 122 return status; 123 } 124 125 return B_OK; 126 } 127 128 129 status_t 130 TermParse::StopThreads() 131 { 132 if (fBuffer == NULL) 133 return B_ERROR; 134 135 fQuitting = true; 136 137 _StopPtyReader(); 138 _StopTermParse(); 139 140 fBuffer = NULL; 141 142 return B_OK; 143 } 144 145 146 //! Initialize and spawn EscParse thread. 147 status_t 148 TermParse::_InitTermParse() 149 { 150 if (fParseThread >= 0) 151 return B_ERROR; // we might want to return B_OK instead ? 152 153 fParseThread = spawn_thread(_escparse_thread, "EscParse", 154 B_DISPLAY_PRIORITY, this); 155 156 if (fParseThread < 0) 157 return fParseThread; 158 159 resume_thread(fParseThread); 160 161 return B_OK; 162 } 163 164 165 //! Initialize and spawn PtyReader thread. 166 status_t 167 TermParse::_InitPtyReader() 168 { 169 if (fReaderThread >= 0) 170 return B_ERROR; // same as above 171 172 fReaderSem = create_sem(0, "pty_reader_sem"); 173 if (fReaderSem < 0) 174 return fReaderSem; 175 176 fReaderLocker = create_sem(0, "pty_locker_sem"); 177 if (fReaderLocker < 0) { 178 delete_sem(fReaderSem); 179 fReaderSem = -1; 180 return fReaderLocker; 181 } 182 183 fReaderThread = spawn_thread(_ptyreader_thread, "PtyReader", 184 B_NORMAL_PRIORITY, this); 185 if (fReaderThread < 0) { 186 delete_sem(fReaderSem); 187 fReaderSem = -1; 188 delete_sem(fReaderLocker); 189 fReaderLocker = -1; 190 return fReaderThread; 191 } 192 193 resume_thread(fReaderThread); 194 195 return B_OK; 196 } 197 198 199 void 200 TermParse::_StopTermParse() 201 { 202 if (fParseThread >= 0) { 203 status_t dummy; 204 wait_for_thread(fParseThread, &dummy); 205 fParseThread = -1; 206 } 207 } 208 209 210 void 211 TermParse::_StopPtyReader() 212 { 213 if (fReaderSem >= 0) { 214 delete_sem(fReaderSem); 215 fReaderSem = -1; 216 } 217 if (fReaderLocker >= 0) { 218 delete_sem(fReaderLocker); 219 fReaderLocker = -1; 220 } 221 222 if (fReaderThread >= 0) { 223 suspend_thread(fReaderThread); 224 225 status_t status; 226 wait_for_thread(fReaderThread, &status); 227 228 fReaderThread = -1; 229 } 230 } 231 232 233 //! Get data from pty device. 234 int32 235 TermParse::PtyReader() 236 { 237 int32 bufferSize = 0; 238 int32 readPos = 0; 239 while (!fQuitting) { 240 // If Pty Buffer nearly full, snooze this thread, and continue. 241 while (READ_BUF_SIZE - bufferSize < MIN_PTY_BUFFER_SPACE) { 242 status_t status; 243 do { 244 status = acquire_sem(fReaderLocker); 245 } while (status == B_INTERRUPTED); 246 if (status < B_OK) 247 return status; 248 249 bufferSize = fReadBufferSize; 250 } 251 252 // Read PTY 253 uchar buf[READ_BUF_SIZE]; 254 ssize_t nread = read(fFd, buf, READ_BUF_SIZE - bufferSize); 255 if (nread <= 0) { 256 fBuffer->NotifyQuit(errno); 257 return B_OK; 258 } 259 260 // Copy read string to PtyBuffer. 261 262 int32 left = READ_BUF_SIZE - readPos; 263 264 if (nread >= left) { 265 memcpy(fReadBuffer + readPos, buf, left); 266 memcpy(fReadBuffer, buf + left, nread - left); 267 } else 268 memcpy(fReadBuffer + readPos, buf, nread); 269 270 bufferSize = atomic_add(&fReadBufferSize, nread); 271 if (bufferSize == 0) 272 release_sem(fReaderSem); 273 274 bufferSize += nread; 275 readPos = (readPos + nread) % READ_BUF_SIZE; 276 } 277 278 return B_OK; 279 } 280 281 282 void 283 TermParse::DumpState(int *groundtable, int *parsestate, uchar c) 284 { 285 static const struct { 286 int *p; 287 const char *name; 288 } tables[] = { 289 #define T(t) \ 290 { t, #t } 291 T(gUTF8GroundTable), 292 T(gISO8859GroundTable), 293 T(gWinCPGroundTable), 294 T(gSJISGroundTable), 295 T(gEscTable), 296 T(gCsiTable), 297 T(gDecTable), 298 T(gScrTable), 299 T(gIgnoreTable), 300 T(gIesTable), 301 T(gEscIgnoreTable), 302 { NULL, NULL } 303 }; 304 int i; 305 fprintf(stderr, "groundtable: "); 306 for (i = 0; tables[i].p; i++) { 307 if (tables[i].p == groundtable) 308 fprintf(stderr, "%s\t", tables[i].name); 309 } 310 fprintf(stderr, "parsestate: "); 311 for (i = 0; tables[i].p; i++) { 312 if (tables[i].p == parsestate) 313 fprintf(stderr, "%s\t", tables[i].name); 314 } 315 fprintf(stderr, "char: 0x%02x (%d)\n", c, c); 316 } 317 318 319 int * 320 TermParse::_GuessGroundTable(int encoding) 321 { 322 switch (encoding) { 323 case B_ISO1_CONVERSION: 324 case B_ISO2_CONVERSION: 325 case B_ISO3_CONVERSION: 326 case B_ISO4_CONVERSION: 327 case B_ISO5_CONVERSION: 328 case B_ISO6_CONVERSION: 329 case B_ISO7_CONVERSION: 330 case B_ISO8_CONVERSION: 331 case B_ISO9_CONVERSION: 332 case B_ISO10_CONVERSION: 333 case B_ISO13_CONVERSION: 334 case B_ISO14_CONVERSION: 335 case B_ISO15_CONVERSION: 336 case B_EUC_CONVERSION: 337 case B_EUC_KR_CONVERSION: 338 case B_JIS_CONVERSION: 339 case B_BIG5_CONVERSION: 340 return gISO8859GroundTable; 341 342 case B_KOI8R_CONVERSION: 343 case B_MS_WINDOWS_1251_CONVERSION: 344 case B_MS_WINDOWS_CONVERSION: 345 case B_MAC_ROMAN_CONVERSION: 346 case B_MS_DOS_866_CONVERSION: 347 case B_GBK_CONVERSION: 348 case B_MS_DOS_CONVERSION: 349 return gWinCPGroundTable; 350 351 case B_SJIS_CONVERSION: 352 return gSJISGroundTable; 353 354 case M_UTF8: 355 default: 356 break; 357 } 358 359 return gUTF8GroundTable; 360 } 361 362 363 int32 364 TermParse::EscParse() 365 { 366 int top = 0; 367 int bottom = 0; 368 369 char cbuf[4] = { 0 }; 370 char dstbuf[4] = { 0 }; 371 372 int currentEncoding = -1; 373 374 int param[NPARAM]; 375 int nparam = 1; 376 for (int i = 0; i < NPARAM; i++) 377 param[i] = DEFAULT; 378 379 int row = 0; 380 int column = 0; 381 382 // default encoding system is UTF8 383 int *groundtable = gUTF8GroundTable; 384 int *parsestate = gUTF8GroundTable; 385 386 // handle alternative character sets G0 - G4 387 const char** graphSets[4] = { NULL, NULL, NULL, NULL }; 388 int curGL = 0; 389 int curGR = 0; 390 391 BAutolock locker(fBuffer); 392 393 while (!fQuitting) { 394 try { 395 uchar c = _NextParseChar(); 396 397 //DumpState(groundtable, parsestate, c); 398 399 if (currentEncoding != fBuffer->Encoding()) { 400 // Change coding, change parse table. 401 groundtable = _GuessGroundTable(fBuffer->Encoding()); 402 parsestate = groundtable; 403 currentEncoding = fBuffer->Encoding(); 404 } 405 406 //debug_printf("TermParse: char: '%c' (%d), parse state: %d\n", c, c, parsestate[c]); 407 int32 srcLen = 0; 408 int32 dstLen = sizeof(dstbuf); 409 int32 dummyState = 0; 410 411 switch (parsestate[c]) { 412 case CASE_PRINT: 413 { 414 int curGS = c < 128 ? curGL : curGR; 415 const char** curGraphSet = graphSets[curGS]; 416 if (curGraphSet != NULL) { 417 int offset = c - (c < 128 ? 0x20 : 0xA0); 418 if (offset >= 0 && offset < 96 419 && curGraphSet[offset] != 0) { 420 fBuffer->InsertChar(curGraphSet[offset]); 421 break; 422 } 423 } 424 fBuffer->InsertChar((char)c); 425 break; 426 } 427 case CASE_PRINT_GR: 428 { 429 /* case iso8859 gr character, or euc */ 430 switch (currentEncoding) { 431 case B_EUC_CONVERSION: 432 case B_EUC_KR_CONVERSION: 433 case B_JIS_CONVERSION: 434 case B_BIG5_CONVERSION: 435 cbuf[srcLen++] = c; 436 c = _NextParseChar(); 437 cbuf[srcLen++] = c; 438 break; 439 440 case B_GBK_CONVERSION: 441 cbuf[srcLen++] = c; 442 do { 443 // GBK-compatible codepoints are 2-bytes long 444 c = _NextParseChar(); 445 cbuf[srcLen++] = c; 446 447 // GB18030 extends GBK with 4-byte codepoints 448 // using 2nd byte from range 0x30...0x39 449 if (srcLen == 2 && (c < 0x30 || c > 0x39)) 450 break; 451 } while (srcLen < 4); 452 break; 453 454 default: // ISO-8859-1...10 and MacRoman 455 cbuf[srcLen++] = c; 456 break; 457 } 458 459 if (srcLen > 0) { 460 int encoding = currentEncoding == B_JIS_CONVERSION 461 ? B_EUC_CONVERSION : currentEncoding; 462 463 convert_to_utf8(encoding, cbuf, &srcLen, 464 dstbuf, &dstLen, &dummyState, '?'); 465 466 fBuffer->InsertChar(UTF8Char(dstbuf, dstLen)); 467 } 468 break; 469 } 470 471 case CASE_LF: 472 fBuffer->InsertLF(); 473 break; 474 475 case CASE_CR: 476 fBuffer->InsertCR(); 477 break; 478 479 case CASE_INDEX: 480 fBuffer->InsertLF(); 481 parsestate = groundtable; 482 break; 483 484 case CASE_NEXT_LINE: 485 fBuffer->NextLine(); 486 parsestate = groundtable; 487 break; 488 489 case CASE_SJIS_KANA: 490 cbuf[srcLen++] = c; 491 convert_to_utf8(currentEncoding, cbuf, &srcLen, 492 dstbuf, &dstLen, &dummyState, '?'); 493 fBuffer->InsertChar(UTF8Char(dstbuf, dstLen)); 494 break; 495 496 case CASE_SJIS_INSTRING: 497 cbuf[srcLen++] = c; 498 c = _NextParseChar(); 499 cbuf[srcLen++] = c; 500 501 convert_to_utf8(currentEncoding, cbuf, &srcLen, 502 dstbuf, &dstLen, &dummyState, '?'); 503 fBuffer->InsertChar(UTF8Char(dstbuf, dstLen)); 504 break; 505 506 case CASE_UTF8_2BYTE: 507 cbuf[srcLen++] = c; 508 c = _NextParseChar(); 509 if (groundtable[c] != CASE_UTF8_INSTRING) 510 break; 511 cbuf[srcLen++] = c; 512 513 fBuffer->InsertChar(UTF8Char(cbuf, srcLen)); 514 break; 515 516 case CASE_UTF8_3BYTE: 517 cbuf[srcLen++] = c; 518 519 do { 520 c = _NextParseChar(); 521 if (groundtable[c] != CASE_UTF8_INSTRING) { 522 srcLen = 0; 523 break; 524 } 525 cbuf[srcLen++] = c; 526 527 } while (srcLen != 3); 528 529 if (srcLen > 0) 530 fBuffer->InsertChar(UTF8Char(cbuf, srcLen)); 531 break; 532 533 case CASE_SCS_STATE: 534 { 535 int set = -1; 536 switch (c) { 537 case '(': 538 set = 0; 539 break; 540 case ')': 541 case '-': 542 set = 1; 543 break; 544 case '*': 545 case '.': 546 set = 2; 547 break; 548 case '+': 549 case '/': 550 set = 3; 551 break; 552 default: 553 break; 554 } 555 556 if (set > -1) { 557 char page = _NextParseChar(); 558 switch (page) { 559 case '0': 560 graphSets[set] = gLineDrawGraphSet; 561 break; 562 default: 563 graphSets[set] = NULL; 564 break; 565 } 566 } 567 568 parsestate = groundtable; 569 break; 570 } 571 572 case CASE_GROUND_STATE: 573 /* exit ignore mode */ 574 parsestate = groundtable; 575 break; 576 577 case CASE_BELL: 578 beep(); 579 break; 580 581 case CASE_BS: 582 fBuffer->MoveCursorLeft(1); 583 break; 584 585 case CASE_TAB: 586 fBuffer->InsertTab(); 587 break; 588 589 case CASE_ESC: 590 /* escape */ 591 parsestate = gEscTable; 592 break; 593 594 case CASE_IGNORE_STATE: 595 /* Ies: ignore anything else */ 596 parsestate = gIgnoreTable; 597 break; 598 599 case CASE_IGNORE_ESC: 600 /* Ign: escape */ 601 parsestate = gIesTable; 602 break; 603 604 case CASE_IGNORE: 605 /* Ignore character */ 606 break; 607 608 case CASE_LS1: 609 /* select G1 into GL */ 610 curGL = 1; 611 parsestate = groundtable; 612 break; 613 614 case CASE_LS0: 615 /* select G0 into GL */ 616 curGL = 0; 617 parsestate = groundtable; 618 break; 619 620 case CASE_SCR_STATE: // ESC # 621 /* enter scr state */ 622 parsestate = gScrTable; 623 break; 624 625 case CASE_ESC_IGNORE: 626 /* unknown escape sequence */ 627 parsestate = gEscIgnoreTable; 628 break; 629 630 case CASE_ESC_DIGIT: // ESC [ number 631 /* digit in csi or dec mode */ 632 if ((row = param[nparam - 1]) == DEFAULT) 633 row = 0; 634 param[nparam - 1] = 10 * row + (c - '0'); 635 break; 636 637 case CASE_ESC_SEMI: // ESC ; 638 /* semicolon in csi or dec mode */ 639 if (nparam < NPARAM) 640 param[nparam++] = DEFAULT; 641 break; 642 643 case CASE_CSI_SP: // ESC [N q 644 // part of change cursor style DECSCUSR 645 if (nparam < NPARAM) 646 param[nparam++] = ' '; 647 break; 648 649 case CASE_DEC_STATE: 650 /* enter dec mode */ 651 parsestate = gDecTable; 652 break; 653 654 case CASE_ICH: // ESC [@ insert charactor 655 /* ICH */ 656 if ((row = param[0]) < 1) 657 row = 1; 658 fBuffer->InsertSpace(row); 659 parsestate = groundtable; 660 break; 661 662 case CASE_CUU: // ESC [A cursor up, up arrow key. 663 /* CUU */ 664 if ((row = param[0]) < 1) 665 row = 1; 666 fBuffer->MoveCursorUp(row); 667 parsestate = groundtable; 668 break; 669 670 case CASE_CUD: // ESC [B cursor down, down arrow key. 671 /* CUD */ 672 if ((row = param[0]) < 1) 673 row = 1; 674 fBuffer->MoveCursorDown(row); 675 parsestate = groundtable; 676 break; 677 678 case CASE_CUF: // ESC [C cursor forword 679 /* CUF */ 680 if ((row = param[0]) < 1) 681 row = 1; 682 fBuffer->MoveCursorRight(row); 683 parsestate = groundtable; 684 break; 685 686 case CASE_CUB: // ESC [D cursor backword 687 /* CUB */ 688 if ((row = param[0]) < 1) 689 row = 1; 690 fBuffer->MoveCursorLeft(row); 691 parsestate = groundtable; 692 break; 693 694 case CASE_CUP: // ESC [...H move cursor 695 /* CUP | HVP */ 696 if ((row = param[0]) < 1) 697 row = 1; 698 if (nparam < 2 || (column = param[1]) < 1) 699 column = 1; 700 701 fBuffer->SetCursor(column - 1, row - 1 ); 702 parsestate = groundtable; 703 break; 704 705 case CASE_ED: // ESC [ ...J clear screen 706 /* ED */ 707 switch (param[0]) { 708 case DEFAULT: 709 case 0: 710 fBuffer->EraseBelow(); 711 break; 712 713 case 1: 714 fBuffer->EraseAbove(); 715 break; 716 717 case 2: 718 fBuffer->EraseAll(); 719 break; 720 } 721 parsestate = groundtable; 722 break; 723 724 case CASE_EL: // ESC [ ...K delete line 725 /* EL */ 726 switch (param[0]) { 727 case DEFAULT: 728 case 0: 729 fBuffer->DeleteColumns(); 730 break; 731 732 case 1: 733 fBuffer->EraseCharsFrom(0, fBuffer->Cursor().x + 1); 734 break; 735 736 case 2: 737 fBuffer->DeleteColumnsFrom(0); 738 break; 739 } 740 parsestate = groundtable; 741 break; 742 743 case CASE_IL: 744 /* IL */ 745 if ((row = param[0]) < 1) 746 row = 1; 747 fBuffer->InsertLines(row); 748 parsestate = groundtable; 749 break; 750 751 case CASE_DL: 752 /* DL */ 753 if ((row = param[0]) < 1) 754 row = 1; 755 fBuffer->DeleteLines(row); 756 parsestate = groundtable; 757 break; 758 759 case CASE_DCH: 760 /* DCH */ 761 if ((row = param[0]) < 1) 762 row = 1; 763 fBuffer->DeleteChars(row); 764 parsestate = groundtable; 765 break; 766 767 case CASE_SET: 768 /* SET */ 769 if (param[0] == 4) 770 fBuffer->SetInsertMode(MODE_INSERT); 771 parsestate = groundtable; 772 break; 773 774 case CASE_RST: 775 /* RST */ 776 if (param[0] == 4) 777 fBuffer->SetInsertMode(MODE_OVER); 778 parsestate = groundtable; 779 break; 780 781 case CASE_SGR: 782 { 783 /* SGR */ 784 uint32 attributes = fBuffer->GetAttributes(); 785 for (row = 0; row < nparam; ++row) { 786 switch (param[row]) { 787 case DEFAULT: 788 case 0: /* Reset attribute */ 789 attributes = 0; 790 break; 791 792 case 1: /* Bold */ 793 case 5: 794 attributes |= BOLD; 795 break; 796 797 case 4: /* Underline */ 798 attributes |= UNDERLINE; 799 break; 800 801 case 7: /* Inverse */ 802 attributes |= INVERSE; 803 break; 804 805 case 22: /* Not Bold */ 806 attributes &= ~BOLD; 807 break; 808 809 case 24: /* Not Underline */ 810 attributes &= ~UNDERLINE; 811 break; 812 813 case 27: /* Not Inverse */ 814 attributes &= ~INVERSE; 815 break; 816 817 case 90: 818 case 91: 819 case 92: 820 case 93: 821 case 94: 822 case 95: 823 case 96: 824 case 97: 825 param[row] -= 60; 826 case 30: 827 case 31: 828 case 32: 829 case 33: 830 case 34: 831 case 35: 832 case 36: 833 case 37: 834 attributes &= ~FORECOLOR; 835 attributes |= FORECOLORED(param[row] - 30); 836 attributes |= FORESET; 837 break; 838 839 case 38: 840 { 841 int color = -1; 842 if (nparam == 3 && param[1] == 5) 843 color = param[2]; 844 else if (nparam == 5 && param[1] == 2) 845 color = fBuffer->GuessPaletteColor( 846 param[2], param[3], param[4]); 847 848 if (color >= 0) { 849 attributes &= ~FORECOLOR; 850 attributes |= FORECOLORED(color); 851 attributes |= FORESET; 852 } 853 854 row = nparam; // force exit of the parsing 855 break; 856 } 857 858 case 39: 859 attributes &= ~FORESET; 860 break; 861 862 case 100: 863 case 101: 864 case 102: 865 case 103: 866 case 104: 867 case 105: 868 case 106: 869 case 107: 870 param[row] -= 60; 871 case 40: 872 case 41: 873 case 42: 874 case 43: 875 case 44: 876 case 45: 877 case 46: 878 case 47: 879 attributes &= ~BACKCOLOR; 880 attributes |= BACKCOLORED(param[row] - 40); 881 attributes |= BACKSET; 882 break; 883 884 case 48: 885 { 886 int color = -1; 887 if (nparam == 3 && param[1] == 5) 888 color = param[2]; 889 else if (nparam == 5 && param[1] == 2) 890 color = fBuffer->GuessPaletteColor( 891 param[2], param[3], param[4]); 892 893 if (color >= 0) { 894 attributes &= ~BACKCOLOR; 895 attributes |= BACKCOLORED(color); 896 attributes |= BACKSET; 897 } 898 899 row = nparam; // force exit of the parsing 900 break; 901 } 902 903 case 49: 904 attributes &= ~BACKSET; 905 break; 906 } 907 } 908 fBuffer->SetAttributes(attributes); 909 parsestate = groundtable; 910 break; 911 } 912 913 case CASE_CPR: 914 // Q & D hack by Y.Hayakawa (hida@sawada.riec.tohoku.ac.jp) 915 // 21-JUL-99 916 _DeviceStatusReport(param[0]); 917 parsestate = groundtable; 918 break; 919 920 case CASE_DA1: 921 // DA - report device attributes 922 if (param[0] < 1) { 923 // claim to be a VT102 924 write(fFd, "\033[?6c", 5); 925 } 926 parsestate = groundtable; 927 break; 928 929 case CASE_DECSTBM: 930 /* DECSTBM - set scrolling region */ 931 932 if ((top = param[0]) < 1) 933 top = 1; 934 935 if (nparam < 2) 936 bottom = fBuffer->Height(); 937 else 938 bottom = param[1]; 939 940 top--; 941 bottom--; 942 943 if (bottom > top) 944 fBuffer->SetScrollRegion(top, bottom); 945 946 parsestate = groundtable; 947 break; 948 949 case CASE_DECSCUSR_ETC: 950 // DECSCUSR - set cursor style VT520 951 if (nparam == 2 && param[1] == ' ') { 952 bool blinking = (param[0] & 0x01) != 0; 953 int style = -1; 954 switch (param[0]) { 955 case 0: 956 blinking = true; 957 case 1: 958 case 2: 959 style = BLOCK_CURSOR; 960 break; 961 case 3: 962 case 4: 963 style = UNDERLINE_CURSOR; 964 break; 965 case 5: 966 case 6: 967 style = IBEAM_CURSOR; 968 break; 969 } 970 971 if (style != -1) 972 fBuffer->SetCursorStyle(style, blinking); 973 } 974 parsestate = groundtable; 975 break; 976 977 case CASE_DECREQTPARM: 978 // DEXREQTPARM - request terminal parameters 979 _DecReqTermParms(param[0]); 980 parsestate = groundtable; 981 break; 982 983 case CASE_DECSET: 984 /* DECSET */ 985 for (int i = 0; i < nparam; i++) 986 _DecPrivateModeSet(param[i]); 987 parsestate = groundtable; 988 break; 989 990 case CASE_DECRST: 991 /* DECRST */ 992 for (int i = 0; i < nparam; i++) 993 _DecPrivateModeReset(param[i]); 994 parsestate = groundtable; 995 break; 996 997 case CASE_DECALN: 998 /* DECALN */ 999 fBuffer->FillScreen(UTF8Char('E'), 0); 1000 parsestate = groundtable; 1001 break; 1002 1003 // case CASE_GSETS: 1004 // screen->gsets[scstype] = GSET(c) | cs96; 1005 // parsestate = groundtable; 1006 // break; 1007 1008 case CASE_DECSC: 1009 /* DECSC */ 1010 fBuffer->SaveCursor(); 1011 parsestate = groundtable; 1012 break; 1013 1014 case CASE_DECRC: 1015 /* DECRC */ 1016 fBuffer->RestoreCursor(); 1017 parsestate = groundtable; 1018 break; 1019 1020 case CASE_HTS: 1021 /* HTS */ 1022 fBuffer->SetTabStop(fBuffer->Cursor().x); 1023 parsestate = groundtable; 1024 break; 1025 1026 case CASE_TBC: 1027 /* TBC */ 1028 if (param[0] < 1) 1029 fBuffer->ClearTabStop(fBuffer->Cursor().x); 1030 else if (param[0] == 3) 1031 fBuffer->ClearAllTabStops(); 1032 parsestate = groundtable; 1033 break; 1034 1035 case CASE_RI: 1036 /* RI */ 1037 fBuffer->InsertRI(); 1038 parsestate = groundtable; 1039 break; 1040 1041 case CASE_SS2: 1042 /* SS2 */ 1043 parsestate = groundtable; 1044 break; 1045 1046 case CASE_SS3: 1047 /* SS3 */ 1048 parsestate = groundtable; 1049 break; 1050 1051 case CASE_CSI_STATE: 1052 /* enter csi state */ 1053 nparam = 1; 1054 param[0] = DEFAULT; 1055 parsestate = gCsiTable; 1056 break; 1057 1058 case CASE_OSC: 1059 { 1060 /* Operating System Command: ESC ] */ 1061 uchar params[512]; 1062 // fill the buffer until BEL, ST or something else. 1063 bool isParsed = false; 1064 int32 skipCount = 0; // take care about UTF-8 characters 1065 for (uint i = 0; !isParsed && i < sizeof(params); i++) { 1066 params[i] = _NextParseChar(); 1067 1068 if (skipCount > 0) { 1069 skipCount--; 1070 continue; 1071 } 1072 1073 skipCount = UTF8Char::ByteCount(params[i]) - 1; 1074 if (skipCount > 0) 1075 continue; 1076 1077 switch (params[i]) { 1078 // BEL 1079 case 0x07: 1080 isParsed = true; 1081 break; 1082 // 8-bit ST 1083 case 0x9c: 1084 isParsed = true; 1085 break; 1086 // 7-bit ST is "ESC \" 1087 case '\\': 1088 // hm... Was \x1b replaced by 0 during parsing? 1089 if (i > 0 && params[i - 1] == 0) { 1090 isParsed = true; 1091 break; 1092 } 1093 default: 1094 if (!isprint(params[i] & 0x7f)) 1095 break; 1096 continue; 1097 } 1098 params[i] = '\0'; 1099 } 1100 1101 // watchdog for the 'end of buffer' case 1102 params[sizeof(params) - 1] = '\0'; 1103 1104 if (isParsed) 1105 _ProcessOperatingSystemControls(params); 1106 1107 parsestate = groundtable; 1108 break; 1109 } 1110 1111 case CASE_RIS: // ESC c ... Reset terminal. 1112 break; 1113 1114 case CASE_LS2: 1115 /* select G2 into GL */ 1116 curGL = 2; 1117 parsestate = groundtable; 1118 break; 1119 1120 case CASE_LS3: 1121 /* select G3 into GL */ 1122 curGL = 3; 1123 parsestate = groundtable; 1124 break; 1125 1126 case CASE_LS3R: 1127 /* select G3 into GR */ 1128 curGR = 3; 1129 parsestate = groundtable; 1130 break; 1131 1132 case CASE_LS2R: 1133 /* select G2 into GR */ 1134 curGR = 2; 1135 parsestate = groundtable; 1136 break; 1137 1138 case CASE_LS1R: 1139 /* select G1 into GR */ 1140 curGR = 1; 1141 parsestate = groundtable; 1142 break; 1143 1144 case CASE_VPA: // ESC [...d move cursor absolute vertical 1145 /* VPA (CV) */ 1146 if ((row = param[0]) < 1) 1147 row = 1; 1148 1149 // note beterm wants it 1-based unlike usual terminals 1150 fBuffer->SetCursorY(row - 1); 1151 parsestate = groundtable; 1152 break; 1153 1154 case CASE_HPA: // ESC [...G move cursor absolute horizontal 1155 /* HPA (CH) */ 1156 if ((column = param[0]) < 1) 1157 column = 1; 1158 1159 // note beterm wants it 1-based unlike usual terminals 1160 fBuffer->SetCursorX(column - 1); 1161 parsestate = groundtable; 1162 break; 1163 1164 case CASE_SU: // scroll screen up 1165 if ((row = param[0]) < 1) 1166 row = 1; 1167 fBuffer->ScrollBy(row); 1168 parsestate = groundtable; 1169 break; 1170 1171 case CASE_SD: // scroll screen down 1172 if ((row = param[0]) < 1) 1173 row = 1; 1174 fBuffer->ScrollBy(-row); 1175 parsestate = groundtable; 1176 break; 1177 1178 1179 case CASE_ECH: // erase characters 1180 if ((column = param[0]) < 1) 1181 column = 1; 1182 fBuffer->EraseChars(column); 1183 parsestate = groundtable; 1184 break; 1185 1186 case CASE_CBT: // cursor back tab 1187 if ((column = param[0]) < 1) 1188 column = 1; 1189 fBuffer->InsertCursorBackTab(column); 1190 parsestate = groundtable; 1191 break; 1192 1193 case CASE_CFT: // cursor forward tab 1194 if ((column= param[0]) < 1) 1195 column = 1; 1196 for (int32 i = 0; i < column; ++i) 1197 fBuffer->InsertTab(); 1198 parsestate = groundtable; 1199 break; 1200 1201 case CASE_CNL: // cursor next line 1202 if ((row= param[0]) < 1) 1203 row = 1; 1204 fBuffer->SetCursorX(0); 1205 fBuffer->MoveCursorDown(row); 1206 parsestate = groundtable; 1207 break; 1208 1209 case CASE_CPL: // cursor previous line 1210 if ((row= param[0]) < 1) 1211 row = 1; 1212 fBuffer->SetCursorX(0); 1213 fBuffer->MoveCursorUp(row); 1214 parsestate = groundtable; 1215 break; 1216 1217 case CASE_REP: // ESC [...b repeat last graphic char 1218 { 1219 int repetitions = param[0]; 1220 int maxRepetitions = fBuffer->Width() * fBuffer->Height(); 1221 if (repetitions > maxRepetitions) 1222 repetitions = maxRepetitions; 1223 for (int i = 0; i < repetitions; i++) 1224 fBuffer->InsertLastChar(); 1225 parsestate = groundtable; 1226 break; 1227 } 1228 default: 1229 break; 1230 } 1231 } catch (...) { 1232 break; 1233 } 1234 } 1235 1236 return B_OK; 1237 } 1238 1239 1240 /*static*/ int32 1241 TermParse::_ptyreader_thread(void *data) 1242 { 1243 return reinterpret_cast<TermParse *>(data)->PtyReader(); 1244 } 1245 1246 1247 /*static*/ int32 1248 TermParse::_escparse_thread(void *data) 1249 { 1250 return reinterpret_cast<TermParse *>(data)->EscParse(); 1251 } 1252 1253 1254 status_t 1255 TermParse::_ReadParserBuffer() 1256 { 1257 // We have to unlock the terminal buffer while waiting for data from the 1258 // PTY. We don't have to unlock when we don't need to wait, but we do it 1259 // anyway, so that TermView won't be starved when trying to synchronize. 1260 fBuffer->Unlock(); 1261 1262 // wait for new input from pty 1263 if (atomic_get(&fReadBufferSize) == 0) { 1264 status_t status = B_OK; 1265 while (atomic_get(&fReadBufferSize) == 0 && status == B_OK) { 1266 do { 1267 status = acquire_sem(fReaderSem); 1268 } while (status == B_INTERRUPTED); 1269 1270 // eat any sems that were released unconditionally 1271 int32 semCount; 1272 if (get_sem_count(fReaderSem, &semCount) == B_OK && semCount > 0) 1273 acquire_sem_etc(fReaderSem, semCount, B_RELATIVE_TIMEOUT, 0); 1274 } 1275 1276 if (status < B_OK) { 1277 fBuffer->Lock(); 1278 return status; 1279 } 1280 } 1281 1282 int32 toRead = atomic_get(&fReadBufferSize); 1283 if (toRead > ESC_PARSER_BUFFER_SIZE) 1284 toRead = ESC_PARSER_BUFFER_SIZE; 1285 1286 for (int32 i = 0; i < toRead; i++) { 1287 // TODO: This could be optimized using memcpy instead and 1288 // calculating space left as in the PtyReader(). 1289 fParserBuffer[i] = fReadBuffer[fBufferPosition]; 1290 fBufferPosition = (fBufferPosition + 1) % READ_BUF_SIZE; 1291 } 1292 1293 int32 bufferSize = atomic_add(&fReadBufferSize, -toRead); 1294 1295 // If the pty reader thread waits and we have made enough space in the 1296 // buffer now, let it run again. 1297 if (bufferSize > READ_BUF_SIZE - MIN_PTY_BUFFER_SPACE 1298 && bufferSize - toRead <= READ_BUF_SIZE - MIN_PTY_BUFFER_SPACE) { 1299 release_sem(fReaderLocker); 1300 } 1301 1302 fParserBufferSize = toRead; 1303 fParserBufferOffset = 0; 1304 1305 fBuffer->Lock(); 1306 return B_OK; 1307 } 1308 1309 1310 void 1311 TermParse::_DeviceStatusReport(int n) 1312 { 1313 char sbuf[16] ; 1314 int len; 1315 1316 switch (n) { 1317 case 5: 1318 { 1319 // Device status report requested 1320 // reply with "no malfunction detected" 1321 const char* toWrite = "\033[0n"; 1322 write(fFd, toWrite, strlen(toWrite)); 1323 break ; 1324 } 1325 case 6: 1326 // Cursor position report requested 1327 len = snprintf(sbuf, sizeof(sbuf), 1328 "\033[%" B_PRId32 ";%" B_PRId32 "R", 1329 fBuffer->Cursor().y + 1, 1330 fBuffer->Cursor().x + 1); 1331 write(fFd, sbuf, len); 1332 break ; 1333 default: 1334 return; 1335 } 1336 } 1337 1338 1339 void 1340 TermParse::_DecReqTermParms(int value) 1341 { 1342 // Terminal parameters report: 1343 // type (2 or 3); 1344 // no parity (1); 1345 // 8 bits per character (1); 1346 // transmit speed 38400bps (128); 1347 // receive speed 38400bps (128); 1348 // bit rate multiplier 16 (1); 1349 // no flags (0) 1350 char parms[] = "\033[?;1;1;128;128;1;0x"; 1351 1352 if (value < 1) 1353 parms[2] = '2'; 1354 else if (value == 1) 1355 parms[2] = '3'; 1356 else 1357 return; 1358 1359 write(fFd, parms, strlen(parms)); 1360 } 1361 1362 1363 void 1364 TermParse::_DecPrivateModeSet(int value) 1365 { 1366 switch (value) { 1367 case 1: 1368 // Application Cursor Keys (whatever that means). 1369 // Not supported yet. 1370 break; 1371 case 5: 1372 // Reverse Video (inverses colors for the complete screen 1373 // -- when followed by normal video, that's shortly flashes the 1374 // screen). 1375 // Not supported yet. 1376 break; 1377 case 6: 1378 // Set Origin Mode. 1379 fBuffer->SetOriginMode(true); 1380 break; 1381 case 9: 1382 // Set Mouse X and Y on button press. 1383 fBuffer->ReportX10MouseEvent(true); 1384 break; 1385 case 12: 1386 // Start Blinking Cursor. 1387 fBuffer->SetCursorBlinking(true); 1388 break; 1389 case 25: 1390 // Show Cursor. 1391 fBuffer->SetCursorHidden(false); 1392 break; 1393 case 47: 1394 // Use Alternate Screen Buffer. 1395 fBuffer->UseAlternateScreenBuffer(false); 1396 break; 1397 case 1000: 1398 // Send Mouse X & Y on button press and release. 1399 fBuffer->ReportNormalMouseEvent(true); 1400 break; 1401 case 1002: 1402 // Send Mouse X and Y on button press and release, and on motion 1403 // when the mouse enter a new cell 1404 fBuffer->ReportButtonMouseEvent(true); 1405 break; 1406 case 1003: 1407 // Use All Motion Mouse Tracking 1408 fBuffer->ReportAnyMouseEvent(true); 1409 break; 1410 case 1006: 1411 // Enable extended mouse coordinates with SGR scheme 1412 fBuffer->EnableExtendedMouseCoordinates(true); 1413 break; 1414 case 1034: 1415 // Interpret "meta" key, sets eighth bit. 1416 fBuffer->EnableInterpretMetaKey(true); 1417 break; 1418 case 1036: 1419 // Send ESC when Meta modifies a key 1420 fBuffer->EnableMetaKeySendsEscape(true); 1421 break; 1422 case 1039: 1423 // TODO: Send ESC when Alt modifies a key 1424 // Not supported yet. 1425 break; 1426 case 1049: 1427 // Save cursor as in DECSC and use Alternate Screen Buffer, clearing 1428 // it first. 1429 fBuffer->SaveCursor(); 1430 fBuffer->UseAlternateScreenBuffer(true); 1431 break; 1432 } 1433 } 1434 1435 1436 void 1437 TermParse::_DecPrivateModeReset(int value) 1438 { 1439 switch (value) { 1440 case 1: 1441 // Normal Cursor Keys (whatever that means). 1442 // Not supported yet. 1443 break; 1444 case 3: 1445 // 80 Column Mode. 1446 // Not supported yet. 1447 break; 1448 case 4: 1449 // Jump (Fast) Scroll. 1450 // Not supported yet. 1451 break; 1452 case 5: 1453 // Normal Video (Leaves Reverse Video, cf. there). 1454 // Not supported yet. 1455 break; 1456 case 6: 1457 // Reset Origin Mode. 1458 fBuffer->SetOriginMode(false); 1459 break; 1460 case 9: 1461 // Disable Mouse X and Y on button press. 1462 fBuffer->ReportX10MouseEvent(false); 1463 break; 1464 case 12: 1465 // Stop Blinking Cursor. 1466 fBuffer->SetCursorBlinking(false); 1467 break; 1468 case 25: 1469 // Hide Cursor 1470 fBuffer->SetCursorHidden(true); 1471 break; 1472 case 47: 1473 // Use Normal Screen Buffer. 1474 fBuffer->UseNormalScreenBuffer(); 1475 break; 1476 case 1000: 1477 // Don't send Mouse X & Y on button press and release. 1478 fBuffer->ReportNormalMouseEvent(false); 1479 break; 1480 case 1002: 1481 // Don't send Mouse X and Y on button press and release, and on motion 1482 // when the mouse enter a new cell 1483 fBuffer->ReportButtonMouseEvent(false); 1484 break; 1485 case 1003: 1486 // Disable All Motion Mouse Tracking. 1487 fBuffer->ReportAnyMouseEvent(false); 1488 break; 1489 case 1006: 1490 // Disable extended mouse coordinates with SGR scheme 1491 fBuffer->EnableExtendedMouseCoordinates(false); 1492 break; 1493 case 1034: 1494 // Don't interpret "meta" key. 1495 fBuffer->EnableInterpretMetaKey(false); 1496 break; 1497 case 1036: 1498 // Don't send ESC when Meta modifies a key 1499 fBuffer->EnableMetaKeySendsEscape(false); 1500 break; 1501 case 1039: 1502 // TODO: Don't send ESC when Alt modifies a key 1503 // Not supported yet. 1504 break; 1505 case 1049: 1506 // Use Normal Screen Buffer and restore cursor as in DECRC. 1507 fBuffer->UseNormalScreenBuffer(); 1508 fBuffer->RestoreCursor(); 1509 break; 1510 } 1511 } 1512 1513 1514 void 1515 TermParse::_ProcessOperatingSystemControls(uchar* params) 1516 { 1517 int mode = 0; 1518 for (uchar c = *params; c != ';' && c != '\0'; c = *(++params)) { 1519 mode *= 10; 1520 mode += c - '0'; 1521 } 1522 1523 // eat the separator 1524 if (*params == ';') 1525 params++; 1526 1527 static uint8 indexes[kTermColorCount]; 1528 static rgb_color colors[kTermColorCount]; 1529 1530 switch (mode) { 1531 case 0: // icon name and window title 1532 case 2: // window title 1533 fBuffer->SetTitle((const char*)params); 1534 break; 1535 case 4: // set colors (0 - 255) 1536 case 104: // reset colors (0 - 255) 1537 { 1538 bool reset = (mode / 100) == 1; 1539 1540 // colors can be in "idx1:name1;...;idxN:nameN;" sequence too! 1541 uint32 count = 0; 1542 char* p = strtok((char*)params, ";"); 1543 while (p != NULL && count < kTermColorCount) { 1544 indexes[count] = atoi(p); 1545 1546 if (!reset) { 1547 p = strtok(NULL, ";"); 1548 if (p == NULL) 1549 break; 1550 1551 if (gXColorsTable.LookUpColor(p, &colors[count]) == B_OK) 1552 count++; 1553 } else 1554 count++; 1555 1556 p = strtok(NULL, ";"); 1557 }; 1558 1559 if (count > 0) { 1560 if (!reset) 1561 fBuffer->SetColors(indexes, colors, count); 1562 else 1563 fBuffer->ResetColors(indexes, count); 1564 } 1565 } 1566 break; 1567 // set dynamic colors (10 - 19) 1568 case 10: // text foreground 1569 case 11: // text background 1570 case 12: // cursor back 1571 { 1572 int32 offset = mode - 10; 1573 int32 count = 0; 1574 if (strcmp((char*)params, "?") == 0) { 1575 fBuffer->GetColor(mode); 1576 break; 1577 } 1578 char* p = strtok((char*)params, ";"); 1579 do { 1580 if (gXColorsTable.LookUpColor(p, &colors[count]) != B_OK) { 1581 // dyna-colors are pos-sensitive - no chance to continue 1582 break; 1583 } 1584 1585 indexes[count] = 10 + offset + count; 1586 count++; 1587 p = strtok(NULL, ";"); 1588 1589 } while (p != NULL && (offset + count) < 10); 1590 1591 if (count > 0) { 1592 fBuffer->SetColors(indexes, colors, count, true); 1593 } 1594 } 1595 break; 1596 // reset dynamic colors (10 - 19) 1597 case 110: // text foreground 1598 case 111: // text background 1599 case 112: // cursor back 1600 { 1601 indexes[0] = mode; 1602 fBuffer->ResetColors(indexes, 1, true); 1603 } 1604 break; 1605 default: 1606 // printf("%d -> %s\n", mode, params); 1607 break; 1608 } 1609 } 1610