1 /* 2 * Copyright 2001-2023, Haiku, Inc. All rights reserved. 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 Attributes attributes = fBuffer->GetAttributes(); 785 for (row = 0; row < nparam; ++row) { 786 switch (param[row]) { 787 case DEFAULT: 788 case 0: /* Reset attribute */ 789 attributes.Reset(); 790 break; 791 792 case 1: /* Bold */ 793 case 5: 794 attributes |= BOLD; 795 break; 796 797 case 4: /* Underline */ 798 if ((row + 1) < nparam) { 799 row++; 800 switch (param[row]) { 801 case 0: 802 attributes.UnsetUnder(); 803 break; 804 case 1: 805 attributes.SetUnder(SINGLE_UNDERLINE); 806 break; 807 case 2: 808 attributes.SetUnder(DOUBLE_UNDERLINE); 809 break; 810 case 3: 811 attributes.SetUnder(CURLY_UNDERLINE); 812 break; 813 case 4: 814 attributes.SetUnder(DOTTED_UNDERLINE); 815 break; 816 case 5: 817 attributes.SetUnder(DASHED_UNDERLINE); 818 break; 819 default: 820 row = nparam; // force exit of the parsing 821 break; 822 } 823 } else 824 attributes.SetUnder(SINGLE_UNDERLINE); 825 break; 826 827 case 7: /* Inverse */ 828 attributes |= INVERSE; 829 break; 830 831 case 21: /* Double Underline */ 832 attributes.SetUnder(DOUBLE_UNDERLINE); 833 break; 834 835 case 22: /* Not Bold */ 836 attributes &= ~BOLD; 837 break; 838 839 case 24: /* Not Underline */ 840 attributes.UnsetUnder(); 841 break; 842 843 case 27: /* Not Inverse */ 844 attributes &= ~INVERSE; 845 break; 846 847 case 90: 848 case 91: 849 case 92: 850 case 93: 851 case 94: 852 case 95: 853 case 96: 854 case 97: 855 param[row] -= 60; 856 case 30: 857 case 31: 858 case 32: 859 case 33: 860 case 34: 861 case 35: 862 case 36: 863 case 37: 864 attributes.SetIndexedForeground(param[row] - 30); 865 break; 866 867 case 38: 868 { 869 if (nparam >= 3 && param[row+1] == 5) { 870 attributes.SetIndexedForeground(param[row+2]); 871 row += 2; 872 } else if (nparam >= 5 && param[row+1] == 2) { 873 attributes.SetDirectForeground(param[row+2], param[row+3], param[row+4]); 874 row += 4; 875 } else { 876 row = nparam; // force exit of the parsing 877 } 878 879 break; 880 } 881 882 case 39: 883 attributes.UnsetForeground(); 884 break; 885 886 case 100: 887 case 101: 888 case 102: 889 case 103: 890 case 104: 891 case 105: 892 case 106: 893 case 107: 894 param[row] -= 60; 895 case 40: 896 case 41: 897 case 42: 898 case 43: 899 case 44: 900 case 45: 901 case 46: 902 case 47: 903 attributes.SetIndexedBackground(param[row] - 40); 904 break; 905 906 case 48: 907 { 908 if (nparam >= 3 && param[row+1] == 5) { 909 attributes.SetIndexedBackground(param[row+2]); 910 row += 2; 911 } else if (nparam >= 5 && param[row+1] == 2) { 912 attributes.SetDirectBackground(param[row+2], param[row+3], param[row+4]); 913 row += 4; 914 } else { 915 row = nparam; // force exit of the parsing 916 } 917 918 break; 919 } 920 921 case 49: 922 attributes.UnsetBackground(); 923 break; 924 925 case 58: 926 { 927 if (nparam >= 3 && param[row+1] == 5) { 928 attributes.SetIndexedUnderline(param[row+2]); 929 row += 2; 930 } else if (nparam >= 5 && param[row+1] == 2) { 931 attributes.SetDirectUnderline(param[row+2], param[row+3], param[row+4]); 932 row += 4; 933 } else { 934 row = nparam; // force exit of the parsing 935 } 936 937 break; 938 } 939 940 case 59: 941 attributes.UnsetUnderline(); 942 break; 943 } 944 } 945 fBuffer->SetAttributes(attributes); 946 parsestate = groundtable; 947 break; 948 } 949 950 case CASE_CPR: 951 // Q & D hack by Y.Hayakawa (hida@sawada.riec.tohoku.ac.jp) 952 // 21-JUL-99 953 _DeviceStatusReport(param[0]); 954 parsestate = groundtable; 955 break; 956 957 case CASE_DA1: 958 // DA - report device attributes 959 if (param[0] < 1) { 960 // claim to be a VT102 961 write(fFd, "\033[?6c", 5); 962 } 963 parsestate = groundtable; 964 break; 965 966 case CASE_DECSTBM: 967 /* DECSTBM - set scrolling region */ 968 969 if ((top = param[0]) < 1) 970 top = 1; 971 972 if (nparam < 2) 973 bottom = fBuffer->Height(); 974 else 975 bottom = param[1]; 976 977 top--; 978 bottom--; 979 980 if (bottom > top) 981 fBuffer->SetScrollRegion(top, bottom); 982 983 parsestate = groundtable; 984 break; 985 986 case CASE_DECSCUSR_ETC: 987 // DECSCUSR - set cursor style VT520 988 if (nparam == 2 && param[1] == ' ') { 989 bool blinking = (param[0] & 0x01) != 0; 990 int style = -1; 991 switch (param[0]) { 992 case 0: 993 blinking = true; 994 case 1: 995 case 2: 996 style = BLOCK_CURSOR; 997 break; 998 case 3: 999 case 4: 1000 style = UNDERLINE_CURSOR; 1001 break; 1002 case 5: 1003 case 6: 1004 style = IBEAM_CURSOR; 1005 break; 1006 } 1007 1008 if (style != -1) 1009 fBuffer->SetCursorStyle(style, blinking); 1010 } 1011 parsestate = groundtable; 1012 break; 1013 1014 case CASE_DECREQTPARM: 1015 // DEXREQTPARM - request terminal parameters 1016 _DecReqTermParms(param[0]); 1017 parsestate = groundtable; 1018 break; 1019 1020 case CASE_DECSET: 1021 /* DECSET */ 1022 for (int i = 0; i < nparam; i++) 1023 _DecPrivateModeSet(param[i]); 1024 parsestate = groundtable; 1025 break; 1026 1027 case CASE_DECRST: 1028 /* DECRST */ 1029 for (int i = 0; i < nparam; i++) 1030 _DecPrivateModeReset(param[i]); 1031 parsestate = groundtable; 1032 break; 1033 1034 case CASE_DECALN: 1035 /* DECALN */ 1036 { 1037 Attributes attr; 1038 fBuffer->FillScreen(UTF8Char('E'), attr); 1039 parsestate = groundtable; 1040 } 1041 break; 1042 1043 // case CASE_GSETS: 1044 // screen->gsets[scstype] = GSET(c) | cs96; 1045 // parsestate = groundtable; 1046 // break; 1047 1048 case CASE_DECSC: 1049 /* DECSC */ 1050 fBuffer->SaveCursor(); 1051 parsestate = groundtable; 1052 break; 1053 1054 case CASE_DECRC: 1055 /* DECRC */ 1056 fBuffer->RestoreCursor(); 1057 parsestate = groundtable; 1058 break; 1059 1060 case CASE_HTS: 1061 /* HTS */ 1062 fBuffer->SetTabStop(fBuffer->Cursor().x); 1063 parsestate = groundtable; 1064 break; 1065 1066 case CASE_TBC: 1067 /* TBC */ 1068 if (param[0] < 1) 1069 fBuffer->ClearTabStop(fBuffer->Cursor().x); 1070 else if (param[0] == 3) 1071 fBuffer->ClearAllTabStops(); 1072 parsestate = groundtable; 1073 break; 1074 1075 case CASE_RI: 1076 /* RI */ 1077 fBuffer->InsertRI(); 1078 parsestate = groundtable; 1079 break; 1080 1081 case CASE_SS2: 1082 /* SS2 */ 1083 parsestate = groundtable; 1084 break; 1085 1086 case CASE_SS3: 1087 /* SS3 */ 1088 parsestate = groundtable; 1089 break; 1090 1091 case CASE_CSI_STATE: 1092 /* enter csi state */ 1093 nparam = 1; 1094 param[0] = DEFAULT; 1095 parsestate = gCsiTable; 1096 break; 1097 1098 case CASE_OSC: 1099 { 1100 /* Operating System Command: ESC ] */ 1101 uchar params[512]; 1102 // fill the buffer until BEL, ST or something else. 1103 bool isParsed = false; 1104 int32 skipCount = 0; // take care about UTF-8 characters 1105 for (uint i = 0; !isParsed && i < sizeof(params); i++) { 1106 params[i] = _NextParseChar(); 1107 1108 if (skipCount > 0) { 1109 skipCount--; 1110 continue; 1111 } 1112 1113 skipCount = UTF8Char::ByteCount(params[i]) - 1; 1114 if (skipCount > 0) 1115 continue; 1116 1117 switch (params[i]) { 1118 // BEL 1119 case 0x07: 1120 isParsed = true; 1121 break; 1122 // 8-bit ST 1123 case 0x9c: 1124 isParsed = true; 1125 break; 1126 // 7-bit ST is "ESC \" 1127 case '\\': 1128 // hm... Was \x1b replaced by 0 during parsing? 1129 if (i > 0 && params[i - 1] == 0) { 1130 isParsed = true; 1131 break; 1132 } 1133 default: 1134 if (!isprint(params[i] & 0x7f)) 1135 break; 1136 continue; 1137 } 1138 params[i] = '\0'; 1139 } 1140 1141 // watchdog for the 'end of buffer' case 1142 params[sizeof(params) - 1] = '\0'; 1143 1144 if (isParsed) 1145 _ProcessOperatingSystemControls(params); 1146 1147 parsestate = groundtable; 1148 break; 1149 } 1150 1151 case CASE_RIS: // ESC c ... Reset terminal. 1152 break; 1153 1154 case CASE_LS2: 1155 /* select G2 into GL */ 1156 curGL = 2; 1157 parsestate = groundtable; 1158 break; 1159 1160 case CASE_LS3: 1161 /* select G3 into GL */ 1162 curGL = 3; 1163 parsestate = groundtable; 1164 break; 1165 1166 case CASE_LS3R: 1167 /* select G3 into GR */ 1168 curGR = 3; 1169 parsestate = groundtable; 1170 break; 1171 1172 case CASE_LS2R: 1173 /* select G2 into GR */ 1174 curGR = 2; 1175 parsestate = groundtable; 1176 break; 1177 1178 case CASE_LS1R: 1179 /* select G1 into GR */ 1180 curGR = 1; 1181 parsestate = groundtable; 1182 break; 1183 1184 case CASE_VPA: // ESC [...d move cursor absolute vertical 1185 /* VPA (CV) */ 1186 if ((row = param[0]) < 1) 1187 row = 1; 1188 1189 // note beterm wants it 1-based unlike usual terminals 1190 fBuffer->SetCursorY(row - 1); 1191 parsestate = groundtable; 1192 break; 1193 1194 case CASE_HPA: // ESC [...G move cursor absolute horizontal 1195 /* HPA (CH) */ 1196 if ((column = param[0]) < 1) 1197 column = 1; 1198 1199 // note beterm wants it 1-based unlike usual terminals 1200 fBuffer->SetCursorX(column - 1); 1201 parsestate = groundtable; 1202 break; 1203 1204 case CASE_SU: // scroll screen up 1205 if ((row = param[0]) < 1) 1206 row = 1; 1207 fBuffer->ScrollBy(row); 1208 parsestate = groundtable; 1209 break; 1210 1211 case CASE_SD: // scroll screen down 1212 if ((row = param[0]) < 1) 1213 row = 1; 1214 fBuffer->ScrollBy(-row); 1215 parsestate = groundtable; 1216 break; 1217 1218 1219 case CASE_ECH: // erase characters 1220 if ((column = param[0]) < 1) 1221 column = 1; 1222 fBuffer->EraseChars(column); 1223 parsestate = groundtable; 1224 break; 1225 1226 case CASE_CBT: // cursor back tab 1227 if ((column = param[0]) < 1) 1228 column = 1; 1229 fBuffer->InsertCursorBackTab(column); 1230 parsestate = groundtable; 1231 break; 1232 1233 case CASE_CFT: // cursor forward tab 1234 if ((column= param[0]) < 1) 1235 column = 1; 1236 for (int32 i = 0; i < column; ++i) 1237 fBuffer->InsertTab(); 1238 parsestate = groundtable; 1239 break; 1240 1241 case CASE_CNL: // cursor next line 1242 if ((row= param[0]) < 1) 1243 row = 1; 1244 fBuffer->SetCursorX(0); 1245 fBuffer->MoveCursorDown(row); 1246 parsestate = groundtable; 1247 break; 1248 1249 case CASE_CPL: // cursor previous line 1250 if ((row= param[0]) < 1) 1251 row = 1; 1252 fBuffer->SetCursorX(0); 1253 fBuffer->MoveCursorUp(row); 1254 parsestate = groundtable; 1255 break; 1256 1257 case CASE_REP: // ESC [...b repeat last graphic char 1258 { 1259 int repetitions = param[0]; 1260 int maxRepetitions = fBuffer->Width() * fBuffer->Height(); 1261 if (repetitions > maxRepetitions) 1262 repetitions = maxRepetitions; 1263 for (int i = 0; i < repetitions; i++) 1264 fBuffer->InsertLastChar(); 1265 parsestate = groundtable; 1266 break; 1267 } 1268 default: 1269 break; 1270 } 1271 } catch (...) { 1272 break; 1273 } 1274 } 1275 1276 return B_OK; 1277 } 1278 1279 1280 /*static*/ int32 1281 TermParse::_ptyreader_thread(void *data) 1282 { 1283 return reinterpret_cast<TermParse *>(data)->PtyReader(); 1284 } 1285 1286 1287 /*static*/ int32 1288 TermParse::_escparse_thread(void *data) 1289 { 1290 return reinterpret_cast<TermParse *>(data)->EscParse(); 1291 } 1292 1293 1294 status_t 1295 TermParse::_ReadParserBuffer() 1296 { 1297 // We have to unlock the terminal buffer while waiting for data from the 1298 // PTY. We don't have to unlock when we don't need to wait, but we do it 1299 // anyway, so that TermView won't be starved when trying to synchronize. 1300 fBuffer->Unlock(); 1301 1302 // wait for new input from pty 1303 if (atomic_get(&fReadBufferSize) == 0) { 1304 status_t status = B_OK; 1305 while (atomic_get(&fReadBufferSize) == 0 && status == B_OK) { 1306 do { 1307 status = acquire_sem(fReaderSem); 1308 } while (status == B_INTERRUPTED); 1309 1310 // eat any sems that were released unconditionally 1311 int32 semCount; 1312 if (get_sem_count(fReaderSem, &semCount) == B_OK && semCount > 0) 1313 acquire_sem_etc(fReaderSem, semCount, B_RELATIVE_TIMEOUT, 0); 1314 } 1315 1316 if (status < B_OK) { 1317 fBuffer->Lock(); 1318 return status; 1319 } 1320 } 1321 1322 int32 toRead = atomic_get(&fReadBufferSize); 1323 if (toRead > ESC_PARSER_BUFFER_SIZE) 1324 toRead = ESC_PARSER_BUFFER_SIZE; 1325 1326 for (int32 i = 0; i < toRead; i++) { 1327 // TODO: This could be optimized using memcpy instead and 1328 // calculating space left as in the PtyReader(). 1329 fParserBuffer[i] = fReadBuffer[fBufferPosition]; 1330 fBufferPosition = (fBufferPosition + 1) % READ_BUF_SIZE; 1331 } 1332 1333 int32 bufferSize = atomic_add(&fReadBufferSize, -toRead); 1334 1335 // If the pty reader thread waits and we have made enough space in the 1336 // buffer now, let it run again. 1337 if (bufferSize > READ_BUF_SIZE - MIN_PTY_BUFFER_SPACE 1338 && bufferSize - toRead <= READ_BUF_SIZE - MIN_PTY_BUFFER_SPACE) { 1339 release_sem(fReaderLocker); 1340 } 1341 1342 fParserBufferSize = toRead; 1343 fParserBufferOffset = 0; 1344 1345 fBuffer->Lock(); 1346 return B_OK; 1347 } 1348 1349 1350 void 1351 TermParse::_DeviceStatusReport(int n) 1352 { 1353 char sbuf[16] ; 1354 int len; 1355 1356 switch (n) { 1357 case 5: 1358 { 1359 // Device status report requested 1360 // reply with "no malfunction detected" 1361 const char* toWrite = "\033[0n"; 1362 write(fFd, toWrite, strlen(toWrite)); 1363 break ; 1364 } 1365 case 6: 1366 // Cursor position report requested 1367 len = snprintf(sbuf, sizeof(sbuf), 1368 "\033[%" B_PRId32 ";%" B_PRId32 "R", 1369 fBuffer->Cursor().y + 1, 1370 fBuffer->Cursor().x + 1); 1371 write(fFd, sbuf, len); 1372 break ; 1373 default: 1374 return; 1375 } 1376 } 1377 1378 1379 void 1380 TermParse::_DecReqTermParms(int value) 1381 { 1382 // Terminal parameters report: 1383 // type (2 or 3); 1384 // no parity (1); 1385 // 8 bits per character (1); 1386 // transmit speed 38400bps (128); 1387 // receive speed 38400bps (128); 1388 // bit rate multiplier 16 (1); 1389 // no flags (0) 1390 char parms[] = "\033[?;1;1;128;128;1;0x"; 1391 1392 if (value < 1) 1393 parms[2] = '2'; 1394 else if (value == 1) 1395 parms[2] = '3'; 1396 else 1397 return; 1398 1399 write(fFd, parms, strlen(parms)); 1400 } 1401 1402 1403 void 1404 TermParse::_DecPrivateModeSet(int value) 1405 { 1406 switch (value) { 1407 case 1: 1408 // Application Cursor Keys (whatever that means). 1409 // Not supported yet. 1410 break; 1411 case 5: 1412 // Reverse Video (inverses colors for the complete screen 1413 // -- when followed by normal video, that's shortly flashes the 1414 // screen). 1415 // Not supported yet. 1416 break; 1417 case 6: 1418 // Set Origin Mode. 1419 fBuffer->SetOriginMode(true); 1420 break; 1421 case 9: 1422 // Set Mouse X and Y on button press. 1423 fBuffer->ReportX10MouseEvent(true); 1424 break; 1425 case 12: 1426 // Start Blinking Cursor. 1427 fBuffer->SetCursorBlinking(true); 1428 break; 1429 case 25: 1430 // Show Cursor. 1431 fBuffer->SetCursorHidden(false); 1432 break; 1433 case 47: 1434 // Use Alternate Screen Buffer. 1435 fBuffer->UseAlternateScreenBuffer(false); 1436 break; 1437 case 1000: 1438 // Send Mouse X & Y on button press and release. 1439 fBuffer->ReportNormalMouseEvent(true); 1440 break; 1441 case 1002: 1442 // Send Mouse X and Y on button press and release, and on motion 1443 // when the mouse enter a new cell 1444 fBuffer->ReportButtonMouseEvent(true); 1445 break; 1446 case 1003: 1447 // Use All Motion Mouse Tracking 1448 fBuffer->ReportAnyMouseEvent(true); 1449 break; 1450 case 1006: 1451 // Enable extended mouse coordinates with SGR scheme 1452 fBuffer->EnableExtendedMouseCoordinates(true); 1453 break; 1454 case 1034: 1455 // Interpret "meta" key, sets eighth bit. 1456 fBuffer->EnableInterpretMetaKey(true); 1457 break; 1458 case 1036: 1459 // Send ESC when Meta modifies a key 1460 fBuffer->EnableMetaKeySendsEscape(true); 1461 break; 1462 case 1039: 1463 // TODO: Send ESC when Alt modifies a key 1464 // Not supported yet. 1465 break; 1466 case 1049: 1467 // Save cursor as in DECSC and use Alternate Screen Buffer, clearing 1468 // it first. 1469 fBuffer->SaveCursor(); 1470 fBuffer->UseAlternateScreenBuffer(true); 1471 break; 1472 case 2004: 1473 // Enable bracketed paste mode 1474 fBuffer->EnableBracketedPasteMode(true); 1475 break; 1476 } 1477 } 1478 1479 1480 void 1481 TermParse::_DecPrivateModeReset(int value) 1482 { 1483 switch (value) { 1484 case 1: 1485 // Normal Cursor Keys (whatever that means). 1486 // Not supported yet. 1487 break; 1488 case 3: 1489 // 80 Column Mode. 1490 // Not supported yet. 1491 break; 1492 case 4: 1493 // Jump (Fast) Scroll. 1494 // Not supported yet. 1495 break; 1496 case 5: 1497 // Normal Video (Leaves Reverse Video, cf. there). 1498 // Not supported yet. 1499 break; 1500 case 6: 1501 // Reset Origin Mode. 1502 fBuffer->SetOriginMode(false); 1503 break; 1504 case 9: 1505 // Disable Mouse X and Y on button press. 1506 fBuffer->ReportX10MouseEvent(false); 1507 break; 1508 case 12: 1509 // Stop Blinking Cursor. 1510 fBuffer->SetCursorBlinking(false); 1511 break; 1512 case 25: 1513 // Hide Cursor 1514 fBuffer->SetCursorHidden(true); 1515 break; 1516 case 47: 1517 // Use Normal Screen Buffer. 1518 fBuffer->UseNormalScreenBuffer(); 1519 break; 1520 case 1000: 1521 // Don't send Mouse X & Y on button press and release. 1522 fBuffer->ReportNormalMouseEvent(false); 1523 break; 1524 case 1002: 1525 // Don't send Mouse X and Y on button press and release, and on motion 1526 // when the mouse enter a new cell 1527 fBuffer->ReportButtonMouseEvent(false); 1528 break; 1529 case 1003: 1530 // Disable All Motion Mouse Tracking. 1531 fBuffer->ReportAnyMouseEvent(false); 1532 break; 1533 case 1006: 1534 // Disable extended mouse coordinates with SGR scheme 1535 fBuffer->EnableExtendedMouseCoordinates(false); 1536 break; 1537 case 1034: 1538 // Don't interpret "meta" key. 1539 fBuffer->EnableInterpretMetaKey(false); 1540 break; 1541 case 1036: 1542 // Don't send ESC when Meta modifies a key 1543 fBuffer->EnableMetaKeySendsEscape(false); 1544 break; 1545 case 1039: 1546 // TODO: Don't send ESC when Alt modifies a key 1547 // Not supported yet. 1548 break; 1549 case 1049: 1550 // Use Normal Screen Buffer and restore cursor as in DECRC. 1551 fBuffer->UseNormalScreenBuffer(); 1552 fBuffer->RestoreCursor(); 1553 break; 1554 case 2004: 1555 // Disable bracketed paste mode 1556 fBuffer->EnableBracketedPasteMode(false); 1557 break; 1558 } 1559 } 1560 1561 1562 void 1563 TermParse::_ProcessOperatingSystemControls(uchar* params) 1564 { 1565 int mode = 0; 1566 for (uchar c = *params; c != ';' && c != '\0'; c = *(++params)) { 1567 mode *= 10; 1568 mode += c - '0'; 1569 } 1570 1571 // eat the separator 1572 if (*params == ';') 1573 params++; 1574 1575 static uint8 indexes[kTermColorCount]; 1576 static rgb_color colors[kTermColorCount]; 1577 1578 switch (mode) { 1579 case 0: // icon name and window title 1580 case 2: // window title 1581 fBuffer->SetTitle((const char*)params); 1582 break; 1583 case 4: // set colors (0 - 255) 1584 case 104: // reset colors (0 - 255) 1585 { 1586 bool reset = (mode / 100) == 1; 1587 1588 // colors can be in "idx1:name1;...;idxN:nameN;" sequence too! 1589 uint32 count = 0; 1590 char* p = strtok((char*)params, ";"); 1591 while (p != NULL && count < kTermColorCount) { 1592 indexes[count] = atoi(p); 1593 1594 if (!reset) { 1595 p = strtok(NULL, ";"); 1596 if (p == NULL) 1597 break; 1598 1599 if (gXColorsTable.LookUpColor(p, &colors[count]) == B_OK) 1600 count++; 1601 } else 1602 count++; 1603 1604 p = strtok(NULL, ";"); 1605 }; 1606 1607 if (count > 0) { 1608 if (!reset) 1609 fBuffer->SetColors(indexes, colors, count); 1610 else 1611 fBuffer->ResetColors(indexes, count); 1612 } 1613 } 1614 break; 1615 // set dynamic colors (10 - 19) 1616 case 10: // text foreground 1617 case 11: // text background 1618 case 12: // cursor back 1619 { 1620 int32 offset = mode - 10; 1621 int32 count = 0; 1622 if (strcmp((char*)params, "?") == 0) { 1623 fBuffer->GetColor(mode); 1624 break; 1625 } 1626 char* p = strtok((char*)params, ";"); 1627 do { 1628 if (gXColorsTable.LookUpColor(p, &colors[count]) != B_OK) { 1629 // dyna-colors are pos-sensitive - no chance to continue 1630 break; 1631 } 1632 1633 indexes[count] = 10 + offset + count; 1634 count++; 1635 p = strtok(NULL, ";"); 1636 1637 } while (p != NULL && (offset + count) < 10); 1638 1639 if (count > 0) { 1640 fBuffer->SetColors(indexes, colors, count, true); 1641 } 1642 } 1643 break; 1644 // reset dynamic colors (10 - 19) 1645 case 110: // text foreground 1646 case 111: // text background 1647 case 112: // cursor back 1648 { 1649 indexes[0] = mode; 1650 fBuffer->ResetColors(indexes, 1, true); 1651 } 1652 break; 1653 default: 1654 // printf("%d -> %s\n", mode, params); 1655 break; 1656 } 1657 } 1658