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