1 /* 2 * Copyright (C) 1984-2019 Mark Nudelman 3 * 4 * You may distribute under the terms of either the GNU General Public 5 * License or the Less License, as specified in the README file. 6 * 7 * For more information, see the README file. 8 */ 9 10 11 /* 12 * Routines which deal with the characteristics of the terminal. 13 * Uses termcap to be as terminal-independent as possible. 14 */ 15 16 #include "less.h" 17 #include "cmd.h" 18 19 #if MSDOS_COMPILER 20 #include "pckeys.h" 21 #if MSDOS_COMPILER==MSOFTC 22 #include <graph.h> 23 #else 24 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 25 #include <conio.h> 26 #if MSDOS_COMPILER==DJGPPC 27 #include <pc.h> 28 extern int fd0; 29 #endif 30 #else 31 #if MSDOS_COMPILER==WIN32C 32 #include <windows.h> 33 #endif 34 #endif 35 #endif 36 #include <time.h> 37 38 #else 39 40 #if HAVE_SYS_IOCTL_H 41 #include <sys/ioctl.h> 42 #endif 43 44 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 45 #include <termios.h> 46 #else 47 #if HAVE_TERMIO_H 48 #include <termio.h> 49 #else 50 #if HAVE_SGSTAT_H 51 #include <sgstat.h> 52 #else 53 #include <sgtty.h> 54 #endif 55 #endif 56 #endif 57 58 #if HAVE_TERMCAP_H 59 #include <termcap.h> 60 #endif 61 #ifdef _OSK 62 #include <signal.h> 63 #endif 64 #if OS2 65 #include <sys/signal.h> 66 #include "pckeys.h" 67 #endif 68 #if HAVE_SYS_STREAM_H 69 #include <sys/stream.h> 70 #endif 71 #if HAVE_SYS_PTEM_H 72 #include <sys/ptem.h> 73 #endif 74 75 #endif /* MSDOS_COMPILER */ 76 77 /* 78 * Check for broken termios package that forces you to manually 79 * set the line discipline. 80 */ 81 #ifdef __ultrix__ 82 #define MUST_SET_LINE_DISCIPLINE 1 83 #else 84 #define MUST_SET_LINE_DISCIPLINE 0 85 #endif 86 87 #if OS2 88 #define DEFAULT_TERM "ansi" 89 static char *windowid; 90 #else 91 #define DEFAULT_TERM "unknown" 92 #endif 93 94 #if MSDOS_COMPILER==MSOFTC 95 static int videopages; 96 static long msec_loops; 97 static int flash_created = 0; 98 #define SETCOLORS(fg,bg) { _settextcolor(fg); _setbkcolor(bg); } 99 #endif 100 101 #if MSDOS_COMPILER==BORLANDC 102 static unsigned short *whitescreen; 103 static int flash_created = 0; 104 #endif 105 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 106 #define _settextposition(y,x) gotoxy(x,y) 107 #define _clearscreen(m) clrscr() 108 #define _outtext(s) cputs(s) 109 #define SETCOLORS(fg,bg) { textcolor(fg); textbackground(bg); } 110 extern int sc_height; 111 #endif 112 113 #if MSDOS_COMPILER==WIN32C 114 struct keyRecord 115 { 116 int ascii; 117 int scan; 118 } currentKey; 119 120 static int keyCount = 0; 121 static WORD curr_attr; 122 static int pending_scancode = 0; 123 static char x11mousebuf[] = "[M???"; /* Mouse report, after ESC */ 124 static int x11mousePos, x11mouseCount; 125 126 static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */ 127 static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */ 128 HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */ 129 130 extern int utf_mode; 131 extern int quitting; 132 static void win32_init_term(); 133 static void win32_deinit_term(); 134 135 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING 136 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4 137 #endif 138 139 #define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY) 140 #define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY) 141 #define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4))) 142 #define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); \ 143 if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \ 144 error("SETCOLORS failed", NULL_PARG); } 145 #endif 146 147 #if MSDOS_COMPILER 148 public int nm_fg_color; /* Color of normal text */ 149 public int nm_bg_color; 150 public int bo_fg_color; /* Color of bold text */ 151 public int bo_bg_color; 152 public int ul_fg_color; /* Color of underlined text */ 153 public int ul_bg_color; 154 public int so_fg_color; /* Color of standout text */ 155 public int so_bg_color; 156 public int bl_fg_color; /* Color of blinking text */ 157 public int bl_bg_color; 158 static int sy_fg_color; /* Color of system text (before less) */ 159 static int sy_bg_color; 160 public int sgr_mode; /* Honor ANSI sequences rather than using above */ 161 #if MSDOS_COMPILER==WIN32C 162 public int have_ul; /* Is underline available? */ 163 #endif 164 #else 165 166 /* 167 * Strings passed to tputs() to do various terminal functions. 168 */ 169 static char 170 *sc_pad, /* Pad string */ 171 *sc_home, /* Cursor home */ 172 *sc_addline, /* Add line, scroll down following lines */ 173 *sc_lower_left, /* Cursor to last line, first column */ 174 *sc_return, /* Cursor to beginning of current line */ 175 *sc_move, /* General cursor positioning */ 176 *sc_clear, /* Clear screen */ 177 *sc_eol_clear, /* Clear to end of line */ 178 *sc_eos_clear, /* Clear to end of screen */ 179 *sc_s_in, /* Enter standout (highlighted) mode */ 180 *sc_s_out, /* Exit standout mode */ 181 *sc_u_in, /* Enter underline mode */ 182 *sc_u_out, /* Exit underline mode */ 183 *sc_b_in, /* Enter bold mode */ 184 *sc_b_out, /* Exit bold mode */ 185 *sc_bl_in, /* Enter blink mode */ 186 *sc_bl_out, /* Exit blink mode */ 187 *sc_visual_bell, /* Visual bell (flash screen) sequence */ 188 *sc_backspace, /* Backspace cursor */ 189 *sc_s_keypad, /* Start keypad mode */ 190 *sc_e_keypad, /* End keypad mode */ 191 *sc_s_mousecap, /* Start mouse capture mode */ 192 *sc_e_mousecap, /* End mouse capture mode */ 193 *sc_init, /* Startup terminal initialization */ 194 *sc_deinit; /* Exit terminal de-initialization */ 195 #endif 196 197 static int init_done = 0; 198 199 public int auto_wrap; /* Terminal does \r\n when write past margin */ 200 public int ignaw; /* Terminal ignores \n immediately after wrap */ 201 public int erase_char; /* The user's erase char */ 202 public int erase2_char; /* The user's other erase char */ 203 public int kill_char; /* The user's line-kill char */ 204 public int werase_char; /* The user's word-erase char */ 205 public int sc_width, sc_height; /* Height & width of screen */ 206 public int bo_s_width, bo_e_width; /* Printing width of boldface seq */ 207 public int ul_s_width, ul_e_width; /* Printing width of underline seq */ 208 public int so_s_width, so_e_width; /* Printing width of standout seq */ 209 public int bl_s_width, bl_e_width; /* Printing width of blink seq */ 210 public int above_mem, below_mem; /* Memory retained above/below screen */ 211 public int can_goto_line; /* Can move cursor to any line */ 212 public int clear_bg; /* Clear fills with background color */ 213 public int missing_cap = 0; /* Some capability is missing */ 214 public char *kent = NULL; /* Keypad ENTER sequence */ 215 216 static int attrmode = AT_NORMAL; 217 static int termcap_debug = -1; 218 extern int binattr; 219 extern int one_screen; 220 221 #if !MSDOS_COMPILER 222 static char *cheaper(); 223 static void tmodes(); 224 #endif 225 226 /* 227 * These two variables are sometimes defined in, 228 * and needed by, the termcap library. 229 */ 230 #if MUST_DEFINE_OSPEED 231 extern short ospeed; /* Terminal output baud rate */ 232 extern char PC; /* Pad character */ 233 #endif 234 #ifdef _OSK 235 short ospeed; 236 char PC_, *UP, *BC; 237 #endif 238 239 extern int quiet; /* If VERY_QUIET, use visual bell for bell */ 240 extern int no_back_scroll; 241 extern int swindow; 242 extern int no_init; 243 extern int no_keypad; 244 extern int sigs; 245 extern int wscroll; 246 extern int screen_trashed; 247 extern int top_scroll; 248 extern int quit_if_one_screen; 249 extern int oldbot; 250 extern int mousecap; 251 #if HILITE_SEARCH 252 extern int hilite_search; 253 #endif 254 #if MSDOS_COMPILER==WIN32C 255 extern HANDLE tty; 256 #else 257 extern int tty; 258 #endif 259 260 extern char *tgetstr(); 261 extern char *tgoto(); 262 263 264 /* 265 * Change terminal to "raw mode", or restore to "normal" mode. 266 * "Raw mode" means 267 * 1. An outstanding read will complete on receipt of a single keystroke. 268 * 2. Input is not echoed. 269 * 3. On output, \n is mapped to \r\n. 270 * 4. \t is NOT expanded into spaces. 271 * 5. Signal-causing characters such as ctrl-C (interrupt), 272 * etc. are NOT disabled. 273 * It doesn't matter whether an input \n is mapped to \r, or vice versa. 274 */ 275 public void 276 raw_mode(on) 277 int on; 278 { 279 static int curr_on = 0; 280 281 if (on == curr_on) 282 return; 283 erase2_char = '\b'; /* in case OS doesn't know about erase2 */ 284 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 285 { 286 struct termios s; 287 static struct termios save_term; 288 static int saved_term = 0; 289 290 if (on) 291 { 292 /* 293 * Get terminal modes. 294 */ 295 tcgetattr(tty, &s); 296 297 /* 298 * Save modes and set certain variables dependent on modes. 299 */ 300 if (!saved_term) 301 { 302 save_term = s; 303 saved_term = 1; 304 } 305 #if HAVE_OSPEED 306 switch (cfgetospeed(&s)) 307 { 308 #ifdef B0 309 case B0: ospeed = 0; break; 310 #endif 311 #ifdef B50 312 case B50: ospeed = 1; break; 313 #endif 314 #ifdef B75 315 case B75: ospeed = 2; break; 316 #endif 317 #ifdef B110 318 case B110: ospeed = 3; break; 319 #endif 320 #ifdef B134 321 case B134: ospeed = 4; break; 322 #endif 323 #ifdef B150 324 case B150: ospeed = 5; break; 325 #endif 326 #ifdef B200 327 case B200: ospeed = 6; break; 328 #endif 329 #ifdef B300 330 case B300: ospeed = 7; break; 331 #endif 332 #ifdef B600 333 case B600: ospeed = 8; break; 334 #endif 335 #ifdef B1200 336 case B1200: ospeed = 9; break; 337 #endif 338 #ifdef B1800 339 case B1800: ospeed = 10; break; 340 #endif 341 #ifdef B2400 342 case B2400: ospeed = 11; break; 343 #endif 344 #ifdef B4800 345 case B4800: ospeed = 12; break; 346 #endif 347 #ifdef B9600 348 case B9600: ospeed = 13; break; 349 #endif 350 #ifdef EXTA 351 case EXTA: ospeed = 14; break; 352 #endif 353 #ifdef EXTB 354 case EXTB: ospeed = 15; break; 355 #endif 356 #ifdef B57600 357 case B57600: ospeed = 16; break; 358 #endif 359 #ifdef B115200 360 case B115200: ospeed = 17; break; 361 #endif 362 default: ; 363 } 364 #endif 365 erase_char = s.c_cc[VERASE]; 366 #ifdef VERASE2 367 erase2_char = s.c_cc[VERASE2]; 368 #endif 369 kill_char = s.c_cc[VKILL]; 370 #ifdef VWERASE 371 werase_char = s.c_cc[VWERASE]; 372 #else 373 werase_char = CONTROL('W'); 374 #endif 375 376 /* 377 * Set the modes to the way we want them. 378 */ 379 s.c_lflag &= ~(0 380 #ifdef ICANON 381 | ICANON 382 #endif 383 #ifdef ECHO 384 | ECHO 385 #endif 386 #ifdef ECHOE 387 | ECHOE 388 #endif 389 #ifdef ECHOK 390 | ECHOK 391 #endif 392 #if ECHONL 393 | ECHONL 394 #endif 395 ); 396 397 s.c_oflag |= (0 398 #ifdef OXTABS 399 | OXTABS 400 #else 401 #ifdef TAB3 402 | TAB3 403 #else 404 #ifdef XTABS 405 | XTABS 406 #endif 407 #endif 408 #endif 409 #ifdef OPOST 410 | OPOST 411 #endif 412 #ifdef ONLCR 413 | ONLCR 414 #endif 415 ); 416 417 s.c_oflag &= ~(0 418 #ifdef ONOEOT 419 | ONOEOT 420 #endif 421 #ifdef OCRNL 422 | OCRNL 423 #endif 424 #ifdef ONOCR 425 | ONOCR 426 #endif 427 #ifdef ONLRET 428 | ONLRET 429 #endif 430 ); 431 s.c_cc[VMIN] = 1; 432 s.c_cc[VTIME] = 0; 433 #ifdef VLNEXT 434 s.c_cc[VLNEXT] = 0; 435 #endif 436 #ifdef VDSUSP 437 s.c_cc[VDSUSP] = 0; 438 #endif 439 #if MUST_SET_LINE_DISCIPLINE 440 /* 441 * System's termios is broken; need to explicitly 442 * request TERMIODISC line discipline. 443 */ 444 s.c_line = TERMIODISC; 445 #endif 446 } else 447 { 448 /* 449 * Restore saved modes. 450 */ 451 s = save_term; 452 } 453 #if HAVE_FSYNC 454 fsync(tty); 455 #endif 456 tcsetattr(tty, TCSADRAIN, &s); 457 #if MUST_SET_LINE_DISCIPLINE 458 if (!on) 459 { 460 /* 461 * Broken termios *ignores* any line discipline 462 * except TERMIODISC. A different old line discipline 463 * is therefore not restored, yet. Restore the old 464 * line discipline by hand. 465 */ 466 ioctl(tty, TIOCSETD, &save_term.c_line); 467 } 468 #endif 469 } 470 #else 471 #ifdef TCGETA 472 { 473 struct termio s; 474 static struct termio save_term; 475 static int saved_term = 0; 476 477 if (on) 478 { 479 /* 480 * Get terminal modes. 481 */ 482 ioctl(tty, TCGETA, &s); 483 484 /* 485 * Save modes and set certain variables dependent on modes. 486 */ 487 if (!saved_term) 488 { 489 save_term = s; 490 saved_term = 1; 491 } 492 #if HAVE_OSPEED 493 ospeed = s.c_cflag & CBAUD; 494 #endif 495 erase_char = s.c_cc[VERASE]; 496 kill_char = s.c_cc[VKILL]; 497 #ifdef VWERASE 498 werase_char = s.c_cc[VWERASE]; 499 #else 500 werase_char = CONTROL('W'); 501 #endif 502 503 /* 504 * Set the modes to the way we want them. 505 */ 506 s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL); 507 s.c_oflag |= (OPOST|ONLCR|TAB3); 508 s.c_oflag &= ~(OCRNL|ONOCR|ONLRET); 509 s.c_cc[VMIN] = 1; 510 s.c_cc[VTIME] = 0; 511 } else 512 { 513 /* 514 * Restore saved modes. 515 */ 516 s = save_term; 517 } 518 ioctl(tty, TCSETAW, &s); 519 } 520 #else 521 #ifdef TIOCGETP 522 { 523 struct sgttyb s; 524 static struct sgttyb save_term; 525 static int saved_term = 0; 526 527 if (on) 528 { 529 /* 530 * Get terminal modes. 531 */ 532 ioctl(tty, TIOCGETP, &s); 533 534 /* 535 * Save modes and set certain variables dependent on modes. 536 */ 537 if (!saved_term) 538 { 539 save_term = s; 540 saved_term = 1; 541 } 542 #if HAVE_OSPEED 543 ospeed = s.sg_ospeed; 544 #endif 545 erase_char = s.sg_erase; 546 kill_char = s.sg_kill; 547 werase_char = CONTROL('W'); 548 549 /* 550 * Set the modes to the way we want them. 551 */ 552 s.sg_flags |= CBREAK; 553 s.sg_flags &= ~(ECHO|XTABS); 554 } else 555 { 556 /* 557 * Restore saved modes. 558 */ 559 s = save_term; 560 } 561 ioctl(tty, TIOCSETN, &s); 562 } 563 #else 564 #ifdef _OSK 565 { 566 struct sgbuf s; 567 static struct sgbuf save_term; 568 static int saved_term = 0; 569 570 if (on) 571 { 572 /* 573 * Get terminal modes. 574 */ 575 _gs_opt(tty, &s); 576 577 /* 578 * Save modes and set certain variables dependent on modes. 579 */ 580 if (!saved_term) 581 { 582 save_term = s; 583 saved_term = 1; 584 } 585 erase_char = s.sg_bspch; 586 kill_char = s.sg_dlnch; 587 werase_char = CONTROL('W'); 588 589 /* 590 * Set the modes to the way we want them. 591 */ 592 s.sg_echo = 0; 593 s.sg_eofch = 0; 594 s.sg_pause = 0; 595 s.sg_psch = 0; 596 } else 597 { 598 /* 599 * Restore saved modes. 600 */ 601 s = save_term; 602 } 603 _ss_opt(tty, &s); 604 } 605 #else 606 /* MS-DOS, Windows, or OS2 */ 607 #if OS2 608 /* OS2 */ 609 LSIGNAL(SIGINT, SIG_IGN); 610 #endif 611 erase_char = '\b'; 612 #if MSDOS_COMPILER==DJGPPC 613 kill_char = CONTROL('U'); 614 /* 615 * So that when we shell out or run another program, its 616 * stdin is in cooked mode. We do not switch stdin to binary 617 * mode if fd0 is zero, since that means we were called before 618 * tty was reopened in open_getchr, in which case we would be 619 * changing the original stdin device outside less. 620 */ 621 if (fd0 != 0) 622 setmode(0, on ? O_BINARY : O_TEXT); 623 #else 624 kill_char = ESC; 625 #endif 626 werase_char = CONTROL('W'); 627 #endif 628 #endif 629 #endif 630 #endif 631 curr_on = on; 632 } 633 634 #if !MSDOS_COMPILER 635 /* 636 * Some glue to prevent calling termcap functions if tgetent() failed. 637 */ 638 static int hardcopy; 639 640 static char * 641 ltget_env(capname) 642 char *capname; 643 { 644 char name[64]; 645 646 if (termcap_debug) 647 { 648 struct env { struct env *next; char *name; char *value; }; 649 static struct env *envs = NULL; 650 struct env *p; 651 for (p = envs; p != NULL; p = p->next) 652 if (strcmp(p->name, capname) == 0) 653 return p->value; 654 p = (struct env *) ecalloc(1, sizeof(struct env)); 655 p->name = save(capname); 656 p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char)); 657 sprintf(p->value, "<%s>", capname); 658 p->next = envs; 659 envs = p; 660 return p->value; 661 } 662 SNPRINTF1(name, sizeof(name), "LESS_TERMCAP_%s", capname); 663 return (lgetenv(name)); 664 } 665 666 static int 667 ltgetflag(capname) 668 char *capname; 669 { 670 char *s; 671 672 if ((s = ltget_env(capname)) != NULL) 673 return (*s != '\0' && *s != '0'); 674 if (hardcopy) 675 return (0); 676 return (tgetflag(capname)); 677 } 678 679 static int 680 ltgetnum(capname) 681 char *capname; 682 { 683 char *s; 684 685 if ((s = ltget_env(capname)) != NULL) 686 return (atoi(s)); 687 if (hardcopy) 688 return (-1); 689 return (tgetnum(capname)); 690 } 691 692 static char * 693 ltgetstr(capname, pp) 694 char *capname; 695 char **pp; 696 { 697 char *s; 698 699 if ((s = ltget_env(capname)) != NULL) 700 return (s); 701 if (hardcopy) 702 return (NULL); 703 return (tgetstr(capname, pp)); 704 } 705 #endif /* MSDOS_COMPILER */ 706 707 /* 708 * Get size of the output screen. 709 */ 710 public void 711 scrsize(VOID_PARAM) 712 { 713 char *s; 714 int sys_height; 715 int sys_width; 716 #if !MSDOS_COMPILER 717 int n; 718 #endif 719 720 #define DEF_SC_WIDTH 80 721 #if MSDOS_COMPILER 722 #define DEF_SC_HEIGHT 25 723 #else 724 #define DEF_SC_HEIGHT 24 725 #endif 726 727 728 sys_width = sys_height = 0; 729 730 #if MSDOS_COMPILER==MSOFTC 731 { 732 struct videoconfig w; 733 _getvideoconfig(&w); 734 sys_height = w.numtextrows; 735 sys_width = w.numtextcols; 736 } 737 #else 738 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 739 { 740 struct text_info w; 741 gettextinfo(&w); 742 sys_height = w.screenheight; 743 sys_width = w.screenwidth; 744 } 745 #else 746 #if MSDOS_COMPILER==WIN32C 747 { 748 CONSOLE_SCREEN_BUFFER_INFO scr; 749 GetConsoleScreenBufferInfo(con_out, &scr); 750 sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1; 751 sys_width = scr.srWindow.Right - scr.srWindow.Left + 1; 752 } 753 #else 754 #if OS2 755 { 756 int s[2]; 757 _scrsize(s); 758 sys_width = s[0]; 759 sys_height = s[1]; 760 /* 761 * When using terminal emulators for XFree86/OS2, the 762 * _scrsize function does not work well. 763 * Call the scrsize.exe program to get the window size. 764 */ 765 windowid = getenv("WINDOWID"); 766 if (windowid != NULL) 767 { 768 FILE *fd = popen("scrsize", "rt"); 769 if (fd != NULL) 770 { 771 int w, h; 772 fscanf(fd, "%i %i", &w, &h); 773 if (w > 0 && h > 0) 774 { 775 sys_width = w; 776 sys_height = h; 777 } 778 pclose(fd); 779 } 780 } 781 } 782 #else 783 #ifdef TIOCGWINSZ 784 { 785 struct winsize w; 786 if (ioctl(2, TIOCGWINSZ, &w) == 0) 787 { 788 if (w.ws_row > 0) 789 sys_height = w.ws_row; 790 if (w.ws_col > 0) 791 sys_width = w.ws_col; 792 } 793 } 794 #else 795 #ifdef WIOCGETD 796 { 797 struct uwdata w; 798 if (ioctl(2, WIOCGETD, &w) == 0) 799 { 800 if (w.uw_height > 0) 801 sys_height = w.uw_height / w.uw_vs; 802 if (w.uw_width > 0) 803 sys_width = w.uw_width / w.uw_hs; 804 } 805 } 806 #endif 807 #endif 808 #endif 809 #endif 810 #endif 811 #endif 812 813 if (sys_height > 0) 814 sc_height = sys_height; 815 else if ((s = lgetenv("LINES")) != NULL) 816 sc_height = atoi(s); 817 #if !MSDOS_COMPILER 818 else if ((n = ltgetnum("li")) > 0) 819 sc_height = n; 820 #endif 821 if (sc_height <= 0) 822 sc_height = DEF_SC_HEIGHT; 823 824 if (sys_width > 0) 825 sc_width = sys_width; 826 else if ((s = lgetenv("COLUMNS")) != NULL) 827 sc_width = atoi(s); 828 #if !MSDOS_COMPILER 829 else if ((n = ltgetnum("co")) > 0) 830 sc_width = n; 831 #endif 832 if (sc_width <= 0) 833 sc_width = DEF_SC_WIDTH; 834 } 835 836 #if MSDOS_COMPILER==MSOFTC 837 /* 838 * Figure out how many empty loops it takes to delay a millisecond. 839 */ 840 static void 841 get_clock(VOID_PARAM) 842 { 843 clock_t start; 844 845 /* 846 * Get synchronized at the start of a tick. 847 */ 848 start = clock(); 849 while (clock() == start) 850 ; 851 /* 852 * Now count loops till the next tick. 853 */ 854 start = clock(); 855 msec_loops = 0; 856 while (clock() == start) 857 msec_loops++; 858 /* 859 * Convert from (loops per clock) to (loops per millisecond). 860 */ 861 msec_loops *= CLOCKS_PER_SEC; 862 msec_loops /= 1000; 863 } 864 865 /* 866 * Delay for a specified number of milliseconds. 867 */ 868 static void 869 delay(msec) 870 int msec; 871 { 872 long i; 873 874 while (msec-- > 0) 875 { 876 for (i = 0; i < msec_loops; i++) 877 (void) clock(); 878 } 879 } 880 #endif 881 882 /* 883 * Return the characters actually input by a "special" key. 884 */ 885 public char * 886 special_key_str(key) 887 int key; 888 { 889 static char tbuf[40]; 890 char *s; 891 #if MSDOS_COMPILER || OS2 892 static char k_right[] = { '\340', PCK_RIGHT, 0 }; 893 static char k_left[] = { '\340', PCK_LEFT, 0 }; 894 static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 }; 895 static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 }; 896 static char k_insert[] = { '\340', PCK_INSERT, 0 }; 897 static char k_delete[] = { '\340', PCK_DELETE, 0 }; 898 static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 }; 899 static char k_ctl_backspace[] = { '\177', 0 }; 900 static char k_home[] = { '\340', PCK_HOME, 0 }; 901 static char k_end[] = { '\340', PCK_END, 0 }; 902 static char k_up[] = { '\340', PCK_UP, 0 }; 903 static char k_down[] = { '\340', PCK_DOWN, 0 }; 904 static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 }; 905 static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 }; 906 static char k_pageup[] = { '\340', PCK_PAGEUP, 0 }; 907 static char k_f1[] = { '\340', PCK_F1, 0 }; 908 #endif 909 #if !MSDOS_COMPILER 910 char *sp = tbuf; 911 #endif 912 913 switch (key) 914 { 915 #if OS2 916 /* 917 * If windowid is not NULL, assume less is executed in 918 * the XFree86 environment. 919 */ 920 case SK_RIGHT_ARROW: 921 s = windowid ? ltgetstr("kr", &sp) : k_right; 922 break; 923 case SK_LEFT_ARROW: 924 s = windowid ? ltgetstr("kl", &sp) : k_left; 925 break; 926 case SK_UP_ARROW: 927 s = windowid ? ltgetstr("ku", &sp) : k_up; 928 break; 929 case SK_DOWN_ARROW: 930 s = windowid ? ltgetstr("kd", &sp) : k_down; 931 break; 932 case SK_PAGE_UP: 933 s = windowid ? ltgetstr("kP", &sp) : k_pageup; 934 break; 935 case SK_PAGE_DOWN: 936 s = windowid ? ltgetstr("kN", &sp) : k_pagedown; 937 break; 938 case SK_HOME: 939 s = windowid ? ltgetstr("kh", &sp) : k_home; 940 break; 941 case SK_END: 942 s = windowid ? ltgetstr("@7", &sp) : k_end; 943 break; 944 case SK_DELETE: 945 s = windowid ? ltgetstr("kD", &sp) : k_delete; 946 if (s == NULL) 947 { 948 tbuf[0] = '\177'; 949 tbuf[1] = '\0'; 950 s = tbuf; 951 } 952 break; 953 #endif 954 #if MSDOS_COMPILER 955 case SK_RIGHT_ARROW: 956 s = k_right; 957 break; 958 case SK_LEFT_ARROW: 959 s = k_left; 960 break; 961 case SK_UP_ARROW: 962 s = k_up; 963 break; 964 case SK_DOWN_ARROW: 965 s = k_down; 966 break; 967 case SK_PAGE_UP: 968 s = k_pageup; 969 break; 970 case SK_PAGE_DOWN: 971 s = k_pagedown; 972 break; 973 case SK_HOME: 974 s = k_home; 975 break; 976 case SK_END: 977 s = k_end; 978 break; 979 case SK_DELETE: 980 s = k_delete; 981 break; 982 #endif 983 #if MSDOS_COMPILER || OS2 984 case SK_INSERT: 985 s = k_insert; 986 break; 987 case SK_CTL_LEFT_ARROW: 988 s = k_ctl_left; 989 break; 990 case SK_CTL_RIGHT_ARROW: 991 s = k_ctl_right; 992 break; 993 case SK_CTL_BACKSPACE: 994 s = k_ctl_backspace; 995 break; 996 case SK_CTL_DELETE: 997 s = k_ctl_delete; 998 break; 999 case SK_F1: 1000 s = k_f1; 1001 break; 1002 case SK_BACKTAB: 1003 s = k_backtab; 1004 break; 1005 #else 1006 case SK_RIGHT_ARROW: 1007 s = ltgetstr("kr", &sp); 1008 break; 1009 case SK_LEFT_ARROW: 1010 s = ltgetstr("kl", &sp); 1011 break; 1012 case SK_UP_ARROW: 1013 s = ltgetstr("ku", &sp); 1014 break; 1015 case SK_DOWN_ARROW: 1016 s = ltgetstr("kd", &sp); 1017 break; 1018 case SK_PAGE_UP: 1019 s = ltgetstr("kP", &sp); 1020 break; 1021 case SK_PAGE_DOWN: 1022 s = ltgetstr("kN", &sp); 1023 break; 1024 case SK_HOME: 1025 s = ltgetstr("kh", &sp); 1026 break; 1027 case SK_END: 1028 s = ltgetstr("@7", &sp); 1029 break; 1030 case SK_DELETE: 1031 s = ltgetstr("kD", &sp); 1032 if (s == NULL) 1033 { 1034 tbuf[0] = '\177'; 1035 tbuf[1] = '\0'; 1036 s = tbuf; 1037 } 1038 break; 1039 #endif 1040 case SK_CONTROL_K: 1041 tbuf[0] = CONTROL('K'); 1042 tbuf[1] = '\0'; 1043 s = tbuf; 1044 break; 1045 default: 1046 return (NULL); 1047 } 1048 return (s); 1049 } 1050 1051 /* 1052 * Get terminal capabilities via termcap. 1053 */ 1054 public void 1055 get_term(VOID_PARAM) 1056 { 1057 termcap_debug = !isnullenv(lgetenv("LESS_TERMCAP_DEBUG")); 1058 #if MSDOS_COMPILER 1059 auto_wrap = 1; 1060 ignaw = 0; 1061 can_goto_line = 1; 1062 clear_bg = 1; 1063 /* 1064 * Set up default colors. 1065 * The xx_s_width and xx_e_width vars are already initialized to 0. 1066 */ 1067 #if MSDOS_COMPILER==MSOFTC 1068 sy_bg_color = _getbkcolor(); 1069 sy_fg_color = _gettextcolor(); 1070 get_clock(); 1071 #else 1072 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1073 { 1074 struct text_info w; 1075 gettextinfo(&w); 1076 sy_bg_color = (w.attribute >> 4) & 0x0F; 1077 sy_fg_color = (w.attribute >> 0) & 0x0F; 1078 } 1079 #else 1080 #if MSDOS_COMPILER==WIN32C 1081 { 1082 DWORD nread; 1083 CONSOLE_SCREEN_BUFFER_INFO scr; 1084 1085 con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE); 1086 /* 1087 * Always open stdin in binary. Note this *must* be done 1088 * before any file operations have been done on fd0. 1089 */ 1090 SET_BINARY(0); 1091 GetConsoleScreenBufferInfo(con_out, &scr); 1092 ReadConsoleOutputAttribute(con_out, &curr_attr, 1093 1, scr.dwCursorPosition, &nread); 1094 sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */ 1095 sy_fg_color = curr_attr & FG_COLORS; 1096 } 1097 #endif 1098 #endif 1099 #endif 1100 nm_fg_color = sy_fg_color; 1101 nm_bg_color = sy_bg_color; 1102 bo_fg_color = 11; 1103 bo_bg_color = 0; 1104 ul_fg_color = 9; 1105 ul_bg_color = 0; 1106 so_fg_color = 15; 1107 so_bg_color = 9; 1108 bl_fg_color = 15; 1109 bl_bg_color = 0; 1110 sgr_mode = 0; 1111 1112 /* 1113 * Get size of the screen. 1114 */ 1115 scrsize(); 1116 pos_init(); 1117 1118 1119 #else /* !MSDOS_COMPILER */ 1120 { 1121 char *sp; 1122 char *t1, *t2; 1123 char *term; 1124 char termbuf[TERMBUF_SIZE]; 1125 1126 static char sbuf[TERMSBUF_SIZE]; 1127 1128 #if OS2 1129 /* 1130 * Make sure the termcap database is available. 1131 */ 1132 sp = lgetenv("TERMCAP"); 1133 if (isnullenv(sp)) 1134 { 1135 char *termcap; 1136 if ((sp = homefile("termcap.dat")) != NULL) 1137 { 1138 termcap = (char *) ecalloc(strlen(sp)+9, sizeof(char)); 1139 sprintf(termcap, "TERMCAP=%s", sp); 1140 free(sp); 1141 putenv(termcap); 1142 } 1143 } 1144 #endif 1145 /* 1146 * Find out what kind of terminal this is. 1147 */ 1148 if ((term = lgetenv("TERM")) == NULL) 1149 term = DEFAULT_TERM; 1150 hardcopy = 0; 1151 if (tgetent(termbuf, term) != TGETENT_OK) 1152 hardcopy = 1; 1153 if (ltgetflag("hc")) 1154 hardcopy = 1; 1155 1156 /* 1157 * Get size of the screen. 1158 */ 1159 scrsize(); 1160 pos_init(); 1161 1162 auto_wrap = ltgetflag("am"); 1163 ignaw = ltgetflag("xn"); 1164 above_mem = ltgetflag("da"); 1165 below_mem = ltgetflag("db"); 1166 clear_bg = ltgetflag("ut"); 1167 1168 /* 1169 * Assumes termcap variable "sg" is the printing width of: 1170 * the standout sequence, the end standout sequence, 1171 * the underline sequence, the end underline sequence, 1172 * the boldface sequence, and the end boldface sequence. 1173 */ 1174 if ((so_s_width = ltgetnum("sg")) < 0) 1175 so_s_width = 0; 1176 so_e_width = so_s_width; 1177 1178 bo_s_width = bo_e_width = so_s_width; 1179 ul_s_width = ul_e_width = so_s_width; 1180 bl_s_width = bl_e_width = so_s_width; 1181 1182 #if HILITE_SEARCH 1183 if (so_s_width > 0 || so_e_width > 0) 1184 /* 1185 * Disable highlighting by default on magic cookie terminals. 1186 * Turning on highlighting might change the displayed width 1187 * of a line, causing the display to get messed up. 1188 * The user can turn it back on with -g, 1189 * but she won't like the results. 1190 */ 1191 hilite_search = 0; 1192 #endif 1193 1194 /* 1195 * Get various string-valued capabilities. 1196 */ 1197 sp = sbuf; 1198 1199 #if HAVE_OSPEED 1200 sc_pad = ltgetstr("pc", &sp); 1201 if (sc_pad != NULL) 1202 PC = *sc_pad; 1203 #endif 1204 1205 sc_s_keypad = ltgetstr("ks", &sp); 1206 if (sc_s_keypad == NULL) 1207 sc_s_keypad = ""; 1208 sc_e_keypad = ltgetstr("ke", &sp); 1209 if (sc_e_keypad == NULL) 1210 sc_e_keypad = ""; 1211 kent = ltgetstr("@8", &sp); 1212 1213 sc_s_mousecap = ltgetstr("MOUSE_START", &sp); 1214 if (sc_s_mousecap == NULL) 1215 sc_s_mousecap = ESCS "[?1000h" ESCS "[?1006h"; 1216 sc_e_mousecap = ltgetstr("MOUSE_END", &sp); 1217 if (sc_e_mousecap == NULL) 1218 sc_e_mousecap = ESCS "[?1006l" ESCS "[?1000l"; 1219 1220 sc_init = ltgetstr("ti", &sp); 1221 if (sc_init == NULL) 1222 sc_init = ""; 1223 1224 sc_deinit= ltgetstr("te", &sp); 1225 if (sc_deinit == NULL) 1226 sc_deinit = ""; 1227 1228 sc_eol_clear = ltgetstr("ce", &sp); 1229 if (sc_eol_clear == NULL || *sc_eol_clear == '\0') 1230 { 1231 missing_cap = 1; 1232 sc_eol_clear = ""; 1233 } 1234 1235 sc_eos_clear = ltgetstr("cd", &sp); 1236 if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0')) 1237 { 1238 missing_cap = 1; 1239 sc_eos_clear = ""; 1240 } 1241 1242 sc_clear = ltgetstr("cl", &sp); 1243 if (sc_clear == NULL || *sc_clear == '\0') 1244 { 1245 missing_cap = 1; 1246 sc_clear = "\n\n"; 1247 } 1248 1249 sc_move = ltgetstr("cm", &sp); 1250 if (sc_move == NULL || *sc_move == '\0') 1251 { 1252 /* 1253 * This is not an error here, because we don't 1254 * always need sc_move. 1255 * We need it only if we don't have home or lower-left. 1256 */ 1257 sc_move = ""; 1258 can_goto_line = 0; 1259 } else 1260 can_goto_line = 1; 1261 1262 tmodes("so", "se", &sc_s_in, &sc_s_out, "", "", &sp); 1263 tmodes("us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp); 1264 tmodes("md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp); 1265 tmodes("mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp); 1266 1267 sc_visual_bell = ltgetstr("vb", &sp); 1268 if (sc_visual_bell == NULL) 1269 sc_visual_bell = ""; 1270 1271 if (ltgetflag("bs")) 1272 sc_backspace = "\b"; 1273 else 1274 { 1275 sc_backspace = ltgetstr("bc", &sp); 1276 if (sc_backspace == NULL || *sc_backspace == '\0') 1277 sc_backspace = "\b"; 1278 } 1279 1280 /* 1281 * Choose between using "ho" and "cm" ("home" and "cursor move") 1282 * to move the cursor to the upper left corner of the screen. 1283 */ 1284 t1 = ltgetstr("ho", &sp); 1285 if (t1 == NULL) 1286 t1 = ""; 1287 if (*sc_move == '\0') 1288 t2 = ""; 1289 else 1290 { 1291 strcpy(sp, tgoto(sc_move, 0, 0)); 1292 t2 = sp; 1293 sp += strlen(sp) + 1; 1294 } 1295 sc_home = cheaper(t1, t2, "|\b^"); 1296 1297 /* 1298 * Choose between using "ll" and "cm" ("lower left" and "cursor move") 1299 * to move the cursor to the lower left corner of the screen. 1300 */ 1301 t1 = ltgetstr("ll", &sp); 1302 if (t1 == NULL) 1303 t1 = ""; 1304 if (*sc_move == '\0') 1305 t2 = ""; 1306 else 1307 { 1308 strcpy(sp, tgoto(sc_move, 0, sc_height-1)); 1309 t2 = sp; 1310 sp += strlen(sp) + 1; 1311 } 1312 sc_lower_left = cheaper(t1, t2, "\r"); 1313 1314 /* 1315 * Get carriage return string. 1316 */ 1317 sc_return = ltgetstr("cr", &sp); 1318 if (sc_return == NULL) 1319 sc_return = "\r"; 1320 1321 /* 1322 * Choose between using "al" or "sr" ("add line" or "scroll reverse") 1323 * to add a line at the top of the screen. 1324 */ 1325 t1 = ltgetstr("al", &sp); 1326 if (t1 == NULL) 1327 t1 = ""; 1328 t2 = ltgetstr("sr", &sp); 1329 if (t2 == NULL) 1330 t2 = ""; 1331 #if OS2 1332 if (*t1 == '\0' && *t2 == '\0') 1333 sc_addline = ""; 1334 else 1335 #endif 1336 if (above_mem) 1337 sc_addline = t1; 1338 else 1339 sc_addline = cheaper(t1, t2, ""); 1340 if (*sc_addline == '\0') 1341 { 1342 /* 1343 * Force repaint on any backward movement. 1344 */ 1345 no_back_scroll = 1; 1346 } 1347 } 1348 #endif /* MSDOS_COMPILER */ 1349 } 1350 1351 #if !MSDOS_COMPILER 1352 /* 1353 * Return the cost of displaying a termcap string. 1354 * We use the trick of calling tputs, but as a char printing function 1355 * we give it inc_costcount, which just increments "costcount". 1356 * This tells us how many chars would be printed by using this string. 1357 * {{ Couldn't we just use strlen? }} 1358 */ 1359 static int costcount; 1360 1361 /*ARGSUSED*/ 1362 static int 1363 inc_costcount(c) 1364 int c; 1365 { 1366 costcount++; 1367 return (c); 1368 } 1369 1370 static int 1371 cost(t) 1372 char *t; 1373 { 1374 costcount = 0; 1375 tputs(t, sc_height, inc_costcount); 1376 return (costcount); 1377 } 1378 1379 /* 1380 * Return the "best" of the two given termcap strings. 1381 * The best, if both exist, is the one with the lower 1382 * cost (see cost() function). 1383 */ 1384 static char * 1385 cheaper(t1, t2, def) 1386 char *t1, *t2; 1387 char *def; 1388 { 1389 if (*t1 == '\0' && *t2 == '\0') 1390 { 1391 missing_cap = 1; 1392 return (def); 1393 } 1394 if (*t1 == '\0') 1395 return (t2); 1396 if (*t2 == '\0') 1397 return (t1); 1398 if (cost(t1) < cost(t2)) 1399 return (t1); 1400 return (t2); 1401 } 1402 1403 static void 1404 tmodes(incap, outcap, instr, outstr, def_instr, def_outstr, spp) 1405 char *incap; 1406 char *outcap; 1407 char **instr; 1408 char **outstr; 1409 char *def_instr; 1410 char *def_outstr; 1411 char **spp; 1412 { 1413 *instr = ltgetstr(incap, spp); 1414 if (*instr == NULL) 1415 { 1416 /* Use defaults. */ 1417 *instr = def_instr; 1418 *outstr = def_outstr; 1419 return; 1420 } 1421 1422 *outstr = ltgetstr(outcap, spp); 1423 if (*outstr == NULL) 1424 /* No specific out capability; use "me". */ 1425 *outstr = ltgetstr("me", spp); 1426 if (*outstr == NULL) 1427 /* Don't even have "me"; use a null string. */ 1428 *outstr = ""; 1429 } 1430 1431 #endif /* MSDOS_COMPILER */ 1432 1433 1434 /* 1435 * Below are the functions which perform all the 1436 * terminal-specific screen manipulation. 1437 */ 1438 1439 1440 #if MSDOS_COMPILER 1441 1442 #if MSDOS_COMPILER==WIN32C 1443 static void 1444 _settextposition(int row, int col) 1445 { 1446 COORD cpos; 1447 CONSOLE_SCREEN_BUFFER_INFO csbi; 1448 1449 GetConsoleScreenBufferInfo(con_out, &csbi); 1450 cpos.X = csbi.srWindow.Left + (col - 1); 1451 cpos.Y = csbi.srWindow.Top + (row - 1); 1452 SetConsoleCursorPosition(con_out, cpos); 1453 } 1454 #endif 1455 1456 /* 1457 * Initialize the screen to the correct color at startup. 1458 */ 1459 static void 1460 initcolor(VOID_PARAM) 1461 { 1462 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1463 intensevideo(); 1464 #endif 1465 SETCOLORS(nm_fg_color, nm_bg_color); 1466 #if 0 1467 /* 1468 * This clears the screen at startup. This is different from 1469 * the behavior of other versions of less. Disable it for now. 1470 */ 1471 char *blanks; 1472 int row; 1473 int col; 1474 1475 /* 1476 * Create a complete, blank screen using "normal" colors. 1477 */ 1478 SETCOLORS(nm_fg_color, nm_bg_color); 1479 blanks = (char *) ecalloc(width+1, sizeof(char)); 1480 for (col = 0; col < sc_width; col++) 1481 blanks[col] = ' '; 1482 blanks[sc_width] = '\0'; 1483 for (row = 0; row < sc_height; row++) 1484 _outtext(blanks); 1485 free(blanks); 1486 #endif 1487 } 1488 #endif 1489 1490 #if MSDOS_COMPILER==WIN32C 1491 1492 /* 1493 * Termcap-like init with a private win32 console. 1494 */ 1495 static void 1496 win32_init_term(VOID_PARAM) 1497 { 1498 CONSOLE_SCREEN_BUFFER_INFO scr; 1499 COORD size; 1500 1501 if (con_out_save == INVALID_HANDLE_VALUE) 1502 return; 1503 1504 GetConsoleScreenBufferInfo(con_out_save, &scr); 1505 1506 if (con_out_ours == INVALID_HANDLE_VALUE) 1507 { 1508 DWORD output_mode; 1509 1510 /* 1511 * Create our own screen buffer, so that we 1512 * may restore the original when done. 1513 */ 1514 con_out_ours = CreateConsoleScreenBuffer( 1515 GENERIC_WRITE | GENERIC_READ, 1516 FILE_SHARE_WRITE | FILE_SHARE_READ, 1517 (LPSECURITY_ATTRIBUTES) NULL, 1518 CONSOLE_TEXTMODE_BUFFER, 1519 (LPVOID) NULL); 1520 /* 1521 * Enable underline, if available. 1522 */ 1523 GetConsoleMode(con_out_ours, &output_mode); 1524 have_ul = SetConsoleMode(con_out_ours, 1525 output_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING); 1526 } 1527 1528 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 1529 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 1530 SetConsoleScreenBufferSize(con_out_ours, size); 1531 SetConsoleActiveScreenBuffer(con_out_ours); 1532 con_out = con_out_ours; 1533 } 1534 1535 /* 1536 * Restore the startup console. 1537 */ 1538 static void 1539 win32_deinit_term(VOID_PARAM) 1540 { 1541 if (con_out_save == INVALID_HANDLE_VALUE) 1542 return; 1543 if (quitting) 1544 (void) CloseHandle(con_out_ours); 1545 SetConsoleActiveScreenBuffer(con_out_save); 1546 con_out = con_out_save; 1547 } 1548 1549 #endif 1550 1551 /* 1552 * Configure the termimal so mouse clicks and wheel moves 1553 * produce input to less. 1554 */ 1555 public void 1556 init_mouse(VOID_PARAM) 1557 { 1558 if (!mousecap) 1559 return; 1560 #if !MSDOS_COMPILER 1561 tputs(sc_s_mousecap, sc_height, putchr); 1562 #else 1563 #if MSDOS_COMPILER==WIN32C 1564 SetConsoleMode(tty, ENABLE_PROCESSED_INPUT | ENABLE_MOUSE_INPUT); 1565 #endif 1566 #endif 1567 } 1568 1569 /* 1570 * Configure the terminal so mouse clicks and wheel moves 1571 * are handled by the system (so text can be selected, etc). 1572 */ 1573 public void 1574 deinit_mouse(VOID_PARAM) 1575 { 1576 if (!mousecap) 1577 return; 1578 #if !MSDOS_COMPILER 1579 tputs(sc_e_mousecap, sc_height, putchr); 1580 #else 1581 #if MSDOS_COMPILER==WIN32C 1582 SetConsoleMode(tty, ENABLE_PROCESSED_INPUT); 1583 #endif 1584 #endif 1585 } 1586 1587 /* 1588 * Initialize terminal 1589 */ 1590 public void 1591 init(VOID_PARAM) 1592 { 1593 #if !MSDOS_COMPILER 1594 if (!(quit_if_one_screen && one_screen)) 1595 { 1596 if (!no_init) 1597 tputs(sc_init, sc_height, putchr); 1598 if (!no_keypad) 1599 tputs(sc_s_keypad, sc_height, putchr); 1600 init_mouse(); 1601 } 1602 if (top_scroll) 1603 { 1604 int i; 1605 1606 /* 1607 * This is nice to terminals with no alternate screen, 1608 * but with saved scrolled-off-the-top lines. This way, 1609 * no previous line is lost, but we start with a whole 1610 * screen to ourself. 1611 */ 1612 for (i = 1; i < sc_height; i++) 1613 putchr('\n'); 1614 } else 1615 line_left(); 1616 #else 1617 #if MSDOS_COMPILER==WIN32C 1618 if (!no_init) 1619 win32_init_term(); 1620 #endif 1621 initcolor(); 1622 flush(); 1623 #endif 1624 init_done = 1; 1625 } 1626 1627 /* 1628 * Deinitialize terminal 1629 */ 1630 public void 1631 deinit(VOID_PARAM) 1632 { 1633 if (!init_done) 1634 return; 1635 #if !MSDOS_COMPILER 1636 if (!(quit_if_one_screen && one_screen)) 1637 { 1638 deinit_mouse(); 1639 if (!no_keypad) 1640 tputs(sc_e_keypad, sc_height, putchr); 1641 if (!no_init) 1642 tputs(sc_deinit, sc_height, putchr); 1643 } 1644 #else 1645 /* Restore system colors. */ 1646 SETCOLORS(sy_fg_color, sy_bg_color); 1647 #if MSDOS_COMPILER==WIN32C 1648 if (!no_init) 1649 win32_deinit_term(); 1650 #else 1651 /* Need clreol to make SETCOLORS take effect. */ 1652 clreol(); 1653 #endif 1654 #endif 1655 init_done = 0; 1656 } 1657 1658 /* 1659 * Home cursor (move to upper left corner of screen). 1660 */ 1661 public void 1662 home(VOID_PARAM) 1663 { 1664 #if !MSDOS_COMPILER 1665 tputs(sc_home, 1, putchr); 1666 #else 1667 flush(); 1668 _settextposition(1,1); 1669 #endif 1670 } 1671 1672 /* 1673 * Add a blank line (called with cursor at home). 1674 * Should scroll the display down. 1675 */ 1676 public void 1677 add_line(VOID_PARAM) 1678 { 1679 #if !MSDOS_COMPILER 1680 tputs(sc_addline, sc_height, putchr); 1681 #else 1682 flush(); 1683 #if MSDOS_COMPILER==MSOFTC 1684 _scrolltextwindow(_GSCROLLDOWN); 1685 _settextposition(1,1); 1686 #else 1687 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1688 movetext(1,1, sc_width,sc_height-1, 1,2); 1689 gotoxy(1,1); 1690 clreol(); 1691 #else 1692 #if MSDOS_COMPILER==WIN32C 1693 { 1694 CHAR_INFO fillchar; 1695 SMALL_RECT rcSrc, rcClip; 1696 COORD new_org; 1697 CONSOLE_SCREEN_BUFFER_INFO csbi; 1698 1699 GetConsoleScreenBufferInfo(con_out,&csbi); 1700 1701 /* The clip rectangle is the entire visible screen. */ 1702 rcClip.Left = csbi.srWindow.Left; 1703 rcClip.Top = csbi.srWindow.Top; 1704 rcClip.Right = csbi.srWindow.Right; 1705 rcClip.Bottom = csbi.srWindow.Bottom; 1706 1707 /* The source rectangle is the visible screen minus the last line. */ 1708 rcSrc = rcClip; 1709 rcSrc.Bottom--; 1710 1711 /* Move the top left corner of the source window down one row. */ 1712 new_org.X = rcSrc.Left; 1713 new_org.Y = rcSrc.Top + 1; 1714 1715 /* Fill the right character and attributes. */ 1716 fillchar.Char.AsciiChar = ' '; 1717 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 1718 fillchar.Attributes = curr_attr; 1719 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 1720 _settextposition(1,1); 1721 } 1722 #endif 1723 #endif 1724 #endif 1725 #endif 1726 } 1727 1728 #if 0 1729 /* 1730 * Remove the n topmost lines and scroll everything below it in the 1731 * window upward. This is needed to stop leaking the topmost line 1732 * into the scrollback buffer when we go down-one-line (in WIN32). 1733 */ 1734 public void 1735 remove_top(n) 1736 int n; 1737 { 1738 #if MSDOS_COMPILER==WIN32C 1739 SMALL_RECT rcSrc, rcClip; 1740 CHAR_INFO fillchar; 1741 COORD new_org; 1742 CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ 1743 1744 if (n >= sc_height - 1) 1745 { 1746 clear(); 1747 home(); 1748 return; 1749 } 1750 1751 flush(); 1752 1753 GetConsoleScreenBufferInfo(con_out, &csbi); 1754 1755 /* Get the extent of all-visible-rows-but-the-last. */ 1756 rcSrc.Left = csbi.srWindow.Left; 1757 rcSrc.Top = csbi.srWindow.Top + n; 1758 rcSrc.Right = csbi.srWindow.Right; 1759 rcSrc.Bottom = csbi.srWindow.Bottom; 1760 1761 /* Get the clip rectangle. */ 1762 rcClip.Left = rcSrc.Left; 1763 rcClip.Top = csbi.srWindow.Top; 1764 rcClip.Right = rcSrc.Right; 1765 rcClip.Bottom = rcSrc.Bottom ; 1766 1767 /* Move the source window up n rows. */ 1768 new_org.X = rcSrc.Left; 1769 new_org.Y = rcSrc.Top - n; 1770 1771 /* Fill the right character and attributes. */ 1772 fillchar.Char.AsciiChar = ' '; 1773 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 1774 fillchar.Attributes = curr_attr; 1775 1776 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 1777 1778 /* Position cursor on first blank line. */ 1779 goto_line(sc_height - n - 1); 1780 #endif 1781 } 1782 #endif 1783 1784 #if MSDOS_COMPILER==WIN32C 1785 /* 1786 * Clear the screen. 1787 */ 1788 static void 1789 win32_clear(VOID_PARAM) 1790 { 1791 /* 1792 * This will clear only the currently visible rows of the NT 1793 * console buffer, which means none of the precious scrollback 1794 * rows are touched making for faster scrolling. Note that, if 1795 * the window has fewer columns than the console buffer (i.e. 1796 * there is a horizontal scrollbar as well), the entire width 1797 * of the visible rows will be cleared. 1798 */ 1799 COORD topleft; 1800 DWORD nchars; 1801 DWORD winsz; 1802 CONSOLE_SCREEN_BUFFER_INFO csbi; 1803 1804 /* get the number of cells in the current buffer */ 1805 GetConsoleScreenBufferInfo(con_out, &csbi); 1806 winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1); 1807 topleft.X = 0; 1808 topleft.Y = csbi.srWindow.Top; 1809 1810 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 1811 FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars); 1812 FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars); 1813 } 1814 1815 /* 1816 * Remove the n topmost lines and scroll everything below it in the 1817 * window upward. 1818 */ 1819 public void 1820 win32_scroll_up(n) 1821 int n; 1822 { 1823 SMALL_RECT rcSrc, rcClip; 1824 CHAR_INFO fillchar; 1825 COORD topleft; 1826 COORD new_org; 1827 DWORD nchars; 1828 DWORD size; 1829 CONSOLE_SCREEN_BUFFER_INFO csbi; 1830 1831 if (n <= 0) 1832 return; 1833 1834 if (n >= sc_height - 1) 1835 { 1836 win32_clear(); 1837 _settextposition(1,1); 1838 return; 1839 } 1840 1841 /* Get the extent of what will remain visible after scrolling. */ 1842 GetConsoleScreenBufferInfo(con_out, &csbi); 1843 rcSrc.Left = csbi.srWindow.Left; 1844 rcSrc.Top = csbi.srWindow.Top + n; 1845 rcSrc.Right = csbi.srWindow.Right; 1846 rcSrc.Bottom = csbi.srWindow.Bottom; 1847 1848 /* Get the clip rectangle. */ 1849 rcClip.Left = rcSrc.Left; 1850 rcClip.Top = csbi.srWindow.Top; 1851 rcClip.Right = rcSrc.Right; 1852 rcClip.Bottom = rcSrc.Bottom ; 1853 1854 /* Move the source text to the top of the screen. */ 1855 new_org.X = rcSrc.Left; 1856 new_org.Y = rcClip.Top; 1857 1858 /* Fill the right character and attributes. */ 1859 fillchar.Char.AsciiChar = ' '; 1860 fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color); 1861 1862 /* Scroll the window. */ 1863 SetConsoleTextAttribute(con_out, fillchar.Attributes); 1864 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 1865 1866 /* Clear remaining lines at bottom. */ 1867 topleft.X = csbi.dwCursorPosition.X; 1868 topleft.Y = rcSrc.Bottom - n; 1869 size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X); 1870 FillConsoleOutputCharacter(con_out, ' ', size, topleft, 1871 &nchars); 1872 FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft, 1873 &nchars); 1874 SetConsoleTextAttribute(con_out, curr_attr); 1875 1876 /* Move cursor n lines up from where it was. */ 1877 csbi.dwCursorPosition.Y -= n; 1878 SetConsoleCursorPosition(con_out, csbi.dwCursorPosition); 1879 } 1880 #endif 1881 1882 /* 1883 * Move cursor to lower left corner of screen. 1884 */ 1885 public void 1886 lower_left(VOID_PARAM) 1887 { 1888 if (!init_done) 1889 return; 1890 #if !MSDOS_COMPILER 1891 tputs(sc_lower_left, 1, putchr); 1892 #else 1893 flush(); 1894 _settextposition(sc_height, 1); 1895 #endif 1896 } 1897 1898 /* 1899 * Move cursor to left position of current line. 1900 */ 1901 public void 1902 line_left(VOID_PARAM) 1903 { 1904 #if !MSDOS_COMPILER 1905 tputs(sc_return, 1, putchr); 1906 #else 1907 int row; 1908 flush(); 1909 #if MSDOS_COMPILER==WIN32C 1910 { 1911 CONSOLE_SCREEN_BUFFER_INFO scr; 1912 GetConsoleScreenBufferInfo(con_out, &scr); 1913 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 1914 } 1915 #else 1916 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1917 row = wherey(); 1918 #else 1919 { 1920 struct rccoord tpos = _gettextposition(); 1921 row = tpos.row; 1922 } 1923 #endif 1924 #endif 1925 _settextposition(row, 1); 1926 #endif 1927 } 1928 1929 /* 1930 * Check if the console size has changed and reset internals 1931 * (in lieu of SIGWINCH for WIN32). 1932 */ 1933 public void 1934 check_winch(VOID_PARAM) 1935 { 1936 #if MSDOS_COMPILER==WIN32C 1937 CONSOLE_SCREEN_BUFFER_INFO scr; 1938 COORD size; 1939 1940 if (con_out == INVALID_HANDLE_VALUE) 1941 return; 1942 1943 flush(); 1944 GetConsoleScreenBufferInfo(con_out, &scr); 1945 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 1946 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 1947 if (size.Y != sc_height || size.X != sc_width) 1948 { 1949 sc_height = size.Y; 1950 sc_width = size.X; 1951 if (!no_init && con_out_ours == con_out) 1952 SetConsoleScreenBufferSize(con_out, size); 1953 pos_init(); 1954 wscroll = (sc_height + 1) / 2; 1955 screen_trashed = 1; 1956 } 1957 #endif 1958 } 1959 1960 /* 1961 * Goto a specific line on the screen. 1962 */ 1963 public void 1964 goto_line(sindex) 1965 int sindex; 1966 { 1967 #if !MSDOS_COMPILER 1968 tputs(tgoto(sc_move, 0, sindex), 1, putchr); 1969 #else 1970 flush(); 1971 _settextposition(sindex+1, 1); 1972 #endif 1973 } 1974 1975 #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC 1976 /* 1977 * Create an alternate screen which is all white. 1978 * This screen is used to create a "flash" effect, by displaying it 1979 * briefly and then switching back to the normal screen. 1980 * {{ Yuck! There must be a better way to get a visual bell. }} 1981 */ 1982 static void 1983 create_flash(VOID_PARAM) 1984 { 1985 #if MSDOS_COMPILER==MSOFTC 1986 struct videoconfig w; 1987 char *blanks; 1988 int row, col; 1989 1990 _getvideoconfig(&w); 1991 videopages = w.numvideopages; 1992 if (videopages < 2) 1993 { 1994 at_enter(AT_STANDOUT); 1995 at_exit(); 1996 } else 1997 { 1998 _setactivepage(1); 1999 at_enter(AT_STANDOUT); 2000 blanks = (char *) ecalloc(w.numtextcols, sizeof(char)); 2001 for (col = 0; col < w.numtextcols; col++) 2002 blanks[col] = ' '; 2003 for (row = w.numtextrows; row > 0; row--) 2004 _outmem(blanks, w.numtextcols); 2005 _setactivepage(0); 2006 _setvisualpage(0); 2007 free(blanks); 2008 at_exit(); 2009 } 2010 #else 2011 #if MSDOS_COMPILER==BORLANDC 2012 int n; 2013 2014 whitescreen = (unsigned short *) 2015 malloc(sc_width * sc_height * sizeof(short)); 2016 if (whitescreen == NULL) 2017 return; 2018 for (n = 0; n < sc_width * sc_height; n++) 2019 whitescreen[n] = 0x7020; 2020 #endif 2021 #endif 2022 flash_created = 1; 2023 } 2024 #endif /* MSDOS_COMPILER */ 2025 2026 /* 2027 * Output the "visual bell", if there is one. 2028 */ 2029 public void 2030 vbell(VOID_PARAM) 2031 { 2032 #if !MSDOS_COMPILER 2033 if (*sc_visual_bell == '\0') 2034 return; 2035 tputs(sc_visual_bell, sc_height, putchr); 2036 #else 2037 #if MSDOS_COMPILER==DJGPPC 2038 ScreenVisualBell(); 2039 #else 2040 #if MSDOS_COMPILER==MSOFTC 2041 /* 2042 * Create a flash screen on the second video page. 2043 * Switch to that page, then switch back. 2044 */ 2045 if (!flash_created) 2046 create_flash(); 2047 if (videopages < 2) 2048 return; 2049 _setvisualpage(1); 2050 delay(100); 2051 _setvisualpage(0); 2052 #else 2053 #if MSDOS_COMPILER==BORLANDC 2054 unsigned short *currscreen; 2055 2056 /* 2057 * Get a copy of the current screen. 2058 * Display the flash screen. 2059 * Then restore the old screen. 2060 */ 2061 if (!flash_created) 2062 create_flash(); 2063 if (whitescreen == NULL) 2064 return; 2065 currscreen = (unsigned short *) 2066 malloc(sc_width * sc_height * sizeof(short)); 2067 if (currscreen == NULL) return; 2068 gettext(1, 1, sc_width, sc_height, currscreen); 2069 puttext(1, 1, sc_width, sc_height, whitescreen); 2070 delay(100); 2071 puttext(1, 1, sc_width, sc_height, currscreen); 2072 free(currscreen); 2073 #else 2074 #if MSDOS_COMPILER==WIN32C 2075 /* paint screen with an inverse color */ 2076 clear(); 2077 2078 /* leave it displayed for 100 msec. */ 2079 Sleep(100); 2080 2081 /* restore with a redraw */ 2082 repaint(); 2083 #endif 2084 #endif 2085 #endif 2086 #endif 2087 #endif 2088 } 2089 2090 /* 2091 * Make a noise. 2092 */ 2093 static void 2094 beep(VOID_PARAM) 2095 { 2096 #if !MSDOS_COMPILER 2097 putchr(CONTROL('G')); 2098 #else 2099 #if MSDOS_COMPILER==WIN32C 2100 MessageBeep(0); 2101 #else 2102 write(1, "\7", 1); 2103 #endif 2104 #endif 2105 } 2106 2107 /* 2108 * Ring the terminal bell. 2109 */ 2110 public void 2111 bell(VOID_PARAM) 2112 { 2113 if (quiet == VERY_QUIET) 2114 vbell(); 2115 else 2116 beep(); 2117 } 2118 2119 /* 2120 * Clear the screen. 2121 */ 2122 public void 2123 clear(VOID_PARAM) 2124 { 2125 #if !MSDOS_COMPILER 2126 tputs(sc_clear, sc_height, putchr); 2127 #else 2128 flush(); 2129 #if MSDOS_COMPILER==WIN32C 2130 win32_clear(); 2131 #else 2132 _clearscreen(_GCLEARSCREEN); 2133 #endif 2134 #endif 2135 } 2136 2137 /* 2138 * Clear from the cursor to the end of the cursor's line. 2139 * {{ This must not move the cursor. }} 2140 */ 2141 public void 2142 clear_eol(VOID_PARAM) 2143 { 2144 #if !MSDOS_COMPILER 2145 tputs(sc_eol_clear, 1, putchr); 2146 #else 2147 #if MSDOS_COMPILER==MSOFTC 2148 short top, left; 2149 short bot, right; 2150 struct rccoord tpos; 2151 2152 flush(); 2153 /* 2154 * Save current state. 2155 */ 2156 tpos = _gettextposition(); 2157 _gettextwindow(&top, &left, &bot, &right); 2158 /* 2159 * Set a temporary window to the current line, 2160 * from the cursor's position to the right edge of the screen. 2161 * Then clear that window. 2162 */ 2163 _settextwindow(tpos.row, tpos.col, tpos.row, sc_width); 2164 _clearscreen(_GWINDOW); 2165 /* 2166 * Restore state. 2167 */ 2168 _settextwindow(top, left, bot, right); 2169 _settextposition(tpos.row, tpos.col); 2170 #else 2171 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2172 flush(); 2173 clreol(); 2174 #else 2175 #if MSDOS_COMPILER==WIN32C 2176 DWORD nchars; 2177 COORD cpos; 2178 CONSOLE_SCREEN_BUFFER_INFO scr; 2179 2180 flush(); 2181 memset(&scr, 0, sizeof(scr)); 2182 GetConsoleScreenBufferInfo(con_out, &scr); 2183 cpos.X = scr.dwCursorPosition.X; 2184 cpos.Y = scr.dwCursorPosition.Y; 2185 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2186 FillConsoleOutputAttribute(con_out, curr_attr, 2187 scr.dwSize.X - cpos.X, cpos, &nchars); 2188 FillConsoleOutputCharacter(con_out, ' ', 2189 scr.dwSize.X - cpos.X, cpos, &nchars); 2190 #endif 2191 #endif 2192 #endif 2193 #endif 2194 } 2195 2196 /* 2197 * Clear the current line. 2198 * Clear the screen if there's off-screen memory below the display. 2199 */ 2200 static void 2201 clear_eol_bot(VOID_PARAM) 2202 { 2203 #if MSDOS_COMPILER 2204 clear_eol(); 2205 #else 2206 if (below_mem) 2207 tputs(sc_eos_clear, 1, putchr); 2208 else 2209 tputs(sc_eol_clear, 1, putchr); 2210 #endif 2211 } 2212 2213 /* 2214 * Clear the bottom line of the display. 2215 * Leave the cursor at the beginning of the bottom line. 2216 */ 2217 public void 2218 clear_bot(VOID_PARAM) 2219 { 2220 /* 2221 * If we're in a non-normal attribute mode, temporarily exit 2222 * the mode while we do the clear. Some terminals fill the 2223 * cleared area with the current attribute. 2224 */ 2225 if (oldbot) 2226 lower_left(); 2227 else 2228 line_left(); 2229 2230 if (attrmode == AT_NORMAL) 2231 clear_eol_bot(); 2232 else 2233 { 2234 int saved_attrmode = attrmode; 2235 2236 at_exit(); 2237 clear_eol_bot(); 2238 at_enter(saved_attrmode); 2239 } 2240 } 2241 2242 public void 2243 at_enter(attr) 2244 int attr; 2245 { 2246 attr = apply_at_specials(attr); 2247 2248 #if !MSDOS_COMPILER 2249 /* The one with the most priority is last. */ 2250 if (attr & AT_UNDERLINE) 2251 tputs(sc_u_in, 1, putchr); 2252 if (attr & AT_BOLD) 2253 tputs(sc_b_in, 1, putchr); 2254 if (attr & AT_BLINK) 2255 tputs(sc_bl_in, 1, putchr); 2256 if (attr & AT_STANDOUT) 2257 tputs(sc_s_in, 1, putchr); 2258 #else 2259 flush(); 2260 /* The one with the most priority is first. */ 2261 if (attr & AT_STANDOUT) 2262 { 2263 SETCOLORS(so_fg_color, so_bg_color); 2264 } else if (attr & AT_BLINK) 2265 { 2266 SETCOLORS(bl_fg_color, bl_bg_color); 2267 } 2268 else if (attr & AT_BOLD) 2269 { 2270 SETCOLORS(bo_fg_color, bo_bg_color); 2271 } 2272 else if (attr & AT_UNDERLINE) 2273 { 2274 SETCOLORS(ul_fg_color, ul_bg_color); 2275 } 2276 #endif 2277 2278 attrmode = attr; 2279 } 2280 2281 public void 2282 at_exit(VOID_PARAM) 2283 { 2284 #if !MSDOS_COMPILER 2285 /* Undo things in the reverse order we did them. */ 2286 if (attrmode & AT_STANDOUT) 2287 tputs(sc_s_out, 1, putchr); 2288 if (attrmode & AT_BLINK) 2289 tputs(sc_bl_out, 1, putchr); 2290 if (attrmode & AT_BOLD) 2291 tputs(sc_b_out, 1, putchr); 2292 if (attrmode & AT_UNDERLINE) 2293 tputs(sc_u_out, 1, putchr); 2294 #else 2295 flush(); 2296 SETCOLORS(nm_fg_color, nm_bg_color); 2297 #endif 2298 2299 attrmode = AT_NORMAL; 2300 } 2301 2302 public void 2303 at_switch(attr) 2304 int attr; 2305 { 2306 int new_attrmode = apply_at_specials(attr); 2307 int ignore_modes = AT_ANSI; 2308 2309 if ((new_attrmode & ~ignore_modes) != (attrmode & ~ignore_modes)) 2310 { 2311 at_exit(); 2312 at_enter(attr); 2313 } 2314 } 2315 2316 public int 2317 is_at_equiv(attr1, attr2) 2318 int attr1; 2319 int attr2; 2320 { 2321 attr1 = apply_at_specials(attr1); 2322 attr2 = apply_at_specials(attr2); 2323 2324 return (attr1 == attr2); 2325 } 2326 2327 public int 2328 apply_at_specials(attr) 2329 int attr; 2330 { 2331 if (attr & AT_BINARY) 2332 attr |= binattr; 2333 if (attr & AT_HILITE) 2334 attr |= AT_STANDOUT; 2335 attr &= ~(AT_BINARY|AT_HILITE); 2336 2337 return attr; 2338 } 2339 2340 #if 0 /* No longer used */ 2341 /* 2342 * Erase the character to the left of the cursor 2343 * and move the cursor left. 2344 */ 2345 public void 2346 backspace(VOID_PARAM) 2347 { 2348 #if !MSDOS_COMPILER 2349 /* 2350 * Erase the previous character by overstriking with a space. 2351 */ 2352 tputs(sc_backspace, 1, putchr); 2353 putchr(' '); 2354 tputs(sc_backspace, 1, putchr); 2355 #else 2356 #if MSDOS_COMPILER==MSOFTC 2357 struct rccoord tpos; 2358 2359 flush(); 2360 tpos = _gettextposition(); 2361 if (tpos.col <= 1) 2362 return; 2363 _settextposition(tpos.row, tpos.col-1); 2364 _outtext(" "); 2365 _settextposition(tpos.row, tpos.col-1); 2366 #else 2367 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2368 cputs("\b"); 2369 #else 2370 #if MSDOS_COMPILER==WIN32C 2371 COORD cpos; 2372 DWORD cChars; 2373 CONSOLE_SCREEN_BUFFER_INFO scr; 2374 2375 flush(); 2376 GetConsoleScreenBufferInfo(con_out, &scr); 2377 cpos = scr.dwCursorPosition; 2378 if (cpos.X <= 0) 2379 return; 2380 cpos.X--; 2381 SetConsoleCursorPosition(con_out, cpos); 2382 FillConsoleOutputCharacter(con_out, (TCHAR)' ', 1, cpos, &cChars); 2383 SetConsoleCursorPosition(con_out, cpos); 2384 #endif 2385 #endif 2386 #endif 2387 #endif 2388 } 2389 #endif /* 0 */ 2390 2391 /* 2392 * Output a plain backspace, without erasing the previous char. 2393 */ 2394 public void 2395 putbs(VOID_PARAM) 2396 { 2397 if (termcap_debug) 2398 putstr("<bs>"); 2399 else 2400 { 2401 #if !MSDOS_COMPILER 2402 tputs(sc_backspace, 1, putchr); 2403 #else 2404 int row, col; 2405 2406 flush(); 2407 { 2408 #if MSDOS_COMPILER==MSOFTC 2409 struct rccoord tpos; 2410 tpos = _gettextposition(); 2411 row = tpos.row; 2412 col = tpos.col; 2413 #else 2414 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2415 row = wherey(); 2416 col = wherex(); 2417 #else 2418 #if MSDOS_COMPILER==WIN32C 2419 CONSOLE_SCREEN_BUFFER_INFO scr; 2420 GetConsoleScreenBufferInfo(con_out, &scr); 2421 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 2422 col = scr.dwCursorPosition.X - scr.srWindow.Left + 1; 2423 #endif 2424 #endif 2425 #endif 2426 } 2427 if (col <= 1) 2428 return; 2429 _settextposition(row, col-1); 2430 #endif /* MSDOS_COMPILER */ 2431 } 2432 } 2433 2434 #if MSDOS_COMPILER==WIN32C 2435 /* 2436 * Determine whether an input character is waiting to be read. 2437 */ 2438 public int 2439 win32_kbhit(VOID_PARAM) 2440 { 2441 INPUT_RECORD ip; 2442 DWORD read; 2443 2444 if (keyCount > 0) 2445 return (TRUE); 2446 2447 currentKey.ascii = 0; 2448 currentKey.scan = 0; 2449 2450 if (x11mouseCount > 0) 2451 { 2452 currentKey.ascii = x11mousebuf[x11mousePos++]; 2453 --x11mouseCount; 2454 keyCount = 1; 2455 return (TRUE); 2456 } 2457 2458 /* 2459 * Wait for a real key-down event, but 2460 * ignore SHIFT and CONTROL key events. 2461 */ 2462 do 2463 { 2464 PeekConsoleInput(tty, &ip, 1, &read); 2465 if (read == 0) 2466 return (FALSE); 2467 ReadConsoleInput(tty, &ip, 1, &read); 2468 /* generate an X11 mouse sequence from the mouse event */ 2469 if (mousecap && ip.EventType == MOUSE_EVENT && 2470 ip.Event.MouseEvent.dwEventFlags != MOUSE_MOVED) 2471 { 2472 x11mousebuf[3] = X11MOUSE_OFFSET + ip.Event.MouseEvent.dwMousePosition.X + 1; 2473 x11mousebuf[4] = X11MOUSE_OFFSET + ip.Event.MouseEvent.dwMousePosition.Y + 1; 2474 switch (ip.Event.MouseEvent.dwEventFlags) 2475 { 2476 case 0: /* press or release */ 2477 if (ip.Event.MouseEvent.dwButtonState == 0) 2478 x11mousebuf[2] = X11MOUSE_OFFSET + X11MOUSE_BUTTON_REL; 2479 else if (ip.Event.MouseEvent.dwButtonState & (FROM_LEFT_3RD_BUTTON_PRESSED | FROM_LEFT_4TH_BUTTON_PRESSED)) 2480 continue; 2481 else 2482 x11mousebuf[2] = X11MOUSE_OFFSET + X11MOUSE_BUTTON1 + ((int)ip.Event.MouseEvent.dwButtonState << 1); 2483 break; 2484 case MOUSE_WHEELED: 2485 x11mousebuf[2] = X11MOUSE_OFFSET + (((int)ip.Event.MouseEvent.dwButtonState < 0) ? X11MOUSE_WHEEL_DOWN : X11MOUSE_WHEEL_UP); 2486 break; 2487 default: 2488 continue; 2489 } 2490 x11mousePos = 0; 2491 x11mouseCount = 5; 2492 currentKey.ascii = ESC; 2493 keyCount = 1; 2494 return (TRUE); 2495 } 2496 } while (ip.EventType != KEY_EVENT || 2497 ip.Event.KeyEvent.bKeyDown != TRUE || 2498 ip.Event.KeyEvent.wVirtualScanCode == 0 || 2499 ip.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT || 2500 ip.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL || 2501 ip.Event.KeyEvent.wVirtualKeyCode == VK_MENU); 2502 2503 currentKey.ascii = ip.Event.KeyEvent.uChar.AsciiChar; 2504 currentKey.scan = ip.Event.KeyEvent.wVirtualScanCode; 2505 keyCount = ip.Event.KeyEvent.wRepeatCount; 2506 2507 if (ip.Event.KeyEvent.dwControlKeyState & 2508 (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED)) 2509 { 2510 switch (currentKey.scan) 2511 { 2512 case PCK_ALT_E: /* letter 'E' */ 2513 currentKey.ascii = 0; 2514 break; 2515 } 2516 } else if (ip.Event.KeyEvent.dwControlKeyState & 2517 (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) 2518 { 2519 switch (currentKey.scan) 2520 { 2521 case PCK_RIGHT: /* right arrow */ 2522 currentKey.scan = PCK_CTL_RIGHT; 2523 break; 2524 case PCK_LEFT: /* left arrow */ 2525 currentKey.scan = PCK_CTL_LEFT; 2526 break; 2527 case PCK_DELETE: /* delete */ 2528 currentKey.scan = PCK_CTL_DELETE; 2529 break; 2530 } 2531 } else if (ip.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED) 2532 { 2533 switch (currentKey.scan) 2534 { 2535 case PCK_SHIFT_TAB: /* tab */ 2536 currentKey.ascii = 0; 2537 break; 2538 } 2539 } 2540 2541 return (TRUE); 2542 } 2543 2544 /* 2545 * Read a character from the keyboard. 2546 */ 2547 public char 2548 WIN32getch(VOID_PARAM) 2549 { 2550 int ascii; 2551 2552 if (pending_scancode) 2553 { 2554 pending_scancode = 0; 2555 return ((char)(currentKey.scan & 0x00FF)); 2556 } 2557 2558 do { 2559 while (win32_kbhit() == FALSE) 2560 { 2561 Sleep(20); 2562 if (ABORT_SIGS()) 2563 return ('\003'); 2564 continue; 2565 } 2566 keyCount --; 2567 ascii = currentKey.ascii; 2568 /* 2569 * On PC's, the extended keys return a 2 byte sequence beginning 2570 * with '00', so if the ascii code is 00, the next byte will be 2571 * the lsb of the scan code. 2572 */ 2573 pending_scancode = (ascii == 0x00); 2574 } while (pending_scancode && 2575 (currentKey.scan == PCK_CAPS_LOCK || currentKey.scan == PCK_NUM_LOCK)); 2576 2577 return ((char)ascii); 2578 } 2579 #endif 2580 2581 #if MSDOS_COMPILER 2582 /* 2583 */ 2584 public void 2585 WIN32setcolors(fg, bg) 2586 int fg; 2587 int bg; 2588 { 2589 SETCOLORS(fg, bg); 2590 } 2591 2592 /* 2593 */ 2594 public void 2595 WIN32textout(text, len) 2596 char *text; 2597 int len; 2598 { 2599 #if MSDOS_COMPILER==WIN32C 2600 DWORD written; 2601 if (utf_mode == 2) 2602 { 2603 /* 2604 * We've got UTF-8 text in a non-UTF-8 console. Convert it to 2605 * wide and use WriteConsoleW. 2606 */ 2607 WCHAR wtext[1024]; 2608 len = MultiByteToWideChar(CP_UTF8, 0, text, len, wtext, 2609 sizeof(wtext)/sizeof(*wtext)); 2610 WriteConsoleW(con_out, wtext, len, &written, NULL); 2611 } else 2612 WriteConsole(con_out, text, len, &written, NULL); 2613 #else 2614 char c = text[len]; 2615 text[len] = '\0'; 2616 cputs(text); 2617 text[len] = c; 2618 #endif 2619 } 2620 #endif 2621