1 /* 2 * Copyright (C) 1984-2023 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 #ifndef FOREGROUND_BLUE 39 #define FOREGROUND_BLUE 0x0001 40 #endif 41 #ifndef FOREGROUND_GREEN 42 #define FOREGROUND_GREEN 0x0002 43 #endif 44 #ifndef FOREGROUND_RED 45 #define FOREGROUND_RED 0x0004 46 #endif 47 #ifndef FOREGROUND_INTENSITY 48 #define FOREGROUND_INTENSITY 0x0008 49 #endif 50 51 #else 52 53 #if HAVE_SYS_IOCTL_H 54 #include <sys/ioctl.h> 55 #endif 56 57 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 58 #include <termios.h> 59 #else 60 #if HAVE_TERMIO_H 61 #include <termio.h> 62 #else 63 #if HAVE_SGSTAT_H 64 #include <sgstat.h> 65 #else 66 #include <sgtty.h> 67 #endif 68 #endif 69 #endif 70 71 #if HAVE_TERMCAP_H 72 #include <termcap.h> 73 #endif 74 #ifdef _OSK 75 #include <signal.h> 76 #endif 77 #if OS2 78 #include <sys/signal.h> 79 #include "pckeys.h" 80 #endif 81 #if HAVE_SYS_STREAM_H 82 #include <sys/stream.h> 83 #endif 84 #if HAVE_SYS_PTEM_H 85 #include <sys/ptem.h> 86 #endif 87 88 #endif /* MSDOS_COMPILER */ 89 90 /* 91 * Check for broken termios package that forces you to manually 92 * set the line discipline. 93 */ 94 #ifdef __ultrix__ 95 #define MUST_SET_LINE_DISCIPLINE 1 96 #else 97 #define MUST_SET_LINE_DISCIPLINE 0 98 #endif 99 100 #if OS2 101 #define DEFAULT_TERM "ansi" 102 static char *windowid; 103 #else 104 #define DEFAULT_TERM "unknown" 105 #endif 106 107 #if MSDOS_COMPILER==MSOFTC 108 static int videopages; 109 static long msec_loops; 110 static int flash_created = 0; 111 #define SET_FG_COLOR(fg) _settextcolor(fg) 112 #define SET_BG_COLOR(bg) _setbkcolor(bg) 113 #define SETCOLORS(fg,bg) { SET_FG_COLOR(fg); SET_BG_COLOR(bg); } 114 #endif 115 116 #if MSDOS_COMPILER==BORLANDC 117 static unsigned short *whitescreen; 118 static int flash_created = 0; 119 #endif 120 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 121 #define _settextposition(y,x) gotoxy(x,y) 122 #define _clearscreen(m) clrscr() 123 #define _outtext(s) cputs(s) 124 #define SET_FG_COLOR(fg) textcolor(fg) 125 #define SET_BG_COLOR(bg) textbackground(bg) 126 #define SETCOLORS(fg,bg) { SET_FG_COLOR(fg); SET_BG_COLOR(bg); } 127 extern int sc_height; 128 #endif 129 130 #if MSDOS_COMPILER==WIN32C 131 #define UTF8_MAX_LENGTH 4 132 struct keyRecord 133 { 134 WCHAR unicode; 135 int ascii; 136 int scan; 137 } currentKey; 138 139 static int keyCount = 0; 140 static WORD curr_attr; 141 static int pending_scancode = 0; 142 static char x11mousebuf[] = "[M???"; /* Mouse report, after ESC */ 143 static int x11mousePos, x11mouseCount; 144 145 static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */ 146 static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */ 147 HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */ 148 149 extern int utf_mode; 150 extern int quitting; 151 static void win32_init_term(); 152 static void win32_deinit_term(); 153 154 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING 155 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4 156 #endif 157 158 #define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY) 159 #define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY) 160 #define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4))) 161 #define APPLY_COLORS() { if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \ 162 error("SETCOLORS failed", NULL_PARG); } 163 #define SET_FG_COLOR(fg) { curr_attr |= (fg); APPLY_COLORS(); } 164 #define SET_BG_COLOR(bg) { curr_attr |= ((bg)<<4); APPLY_COLORS(); } 165 #define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); APPLY_COLORS(); } 166 #endif 167 168 #if MSDOS_COMPILER 169 public int nm_fg_color; /* Color of normal text */ 170 public int nm_bg_color; 171 public int bo_fg_color; /* Color of bold text */ 172 public int bo_bg_color; 173 public int ul_fg_color; /* Color of underlined text */ 174 public int ul_bg_color; 175 public int so_fg_color; /* Color of standout text */ 176 public int so_bg_color; 177 public int bl_fg_color; /* Color of blinking text */ 178 public int bl_bg_color; 179 static int sy_fg_color; /* Color of system text (before less) */ 180 static int sy_bg_color; 181 public int sgr_mode; /* Honor ANSI sequences rather than using above */ 182 #if MSDOS_COMPILER==WIN32C 183 static DWORD init_output_mode; /* The initial console output mode */ 184 public int vt_enabled = -1; /* Is virtual terminal processing available? */ 185 #endif 186 #else 187 188 /* 189 * Strings passed to tputs() to do various terminal functions. 190 */ 191 static char 192 *sc_pad, /* Pad string */ 193 *sc_home, /* Cursor home */ 194 *sc_addline, /* Add line, scroll down following lines */ 195 *sc_lower_left, /* Cursor to last line, first column */ 196 *sc_return, /* Cursor to beginning of current line */ 197 *sc_move, /* General cursor positioning */ 198 *sc_clear, /* Clear screen */ 199 *sc_eol_clear, /* Clear to end of line */ 200 *sc_eos_clear, /* Clear to end of screen */ 201 *sc_s_in, /* Enter standout (highlighted) mode */ 202 *sc_s_out, /* Exit standout mode */ 203 *sc_u_in, /* Enter underline mode */ 204 *sc_u_out, /* Exit underline mode */ 205 *sc_b_in, /* Enter bold mode */ 206 *sc_b_out, /* Exit bold mode */ 207 *sc_bl_in, /* Enter blink mode */ 208 *sc_bl_out, /* Exit blink mode */ 209 *sc_visual_bell, /* Visual bell (flash screen) sequence */ 210 *sc_backspace, /* Backspace cursor */ 211 *sc_s_keypad, /* Start keypad mode */ 212 *sc_e_keypad, /* End keypad mode */ 213 *sc_s_mousecap, /* Start mouse capture mode */ 214 *sc_e_mousecap, /* End mouse capture mode */ 215 *sc_init, /* Startup terminal initialization */ 216 *sc_deinit; /* Exit terminal de-initialization */ 217 218 static int attrcolor = -1; 219 #endif 220 221 static int init_done = 0; 222 223 public int auto_wrap; /* Terminal does \r\n when write past margin */ 224 public int ignaw; /* Terminal ignores \n immediately after wrap */ 225 public int erase_char; /* The user's erase char */ 226 public int erase2_char; /* The user's other erase char */ 227 public int kill_char; /* The user's line-kill char */ 228 public int werase_char; /* The user's word-erase char */ 229 public int sc_width, sc_height; /* Height & width of screen */ 230 public int bo_s_width, bo_e_width; /* Printing width of boldface seq */ 231 public int ul_s_width, ul_e_width; /* Printing width of underline seq */ 232 public int so_s_width, so_e_width; /* Printing width of standout seq */ 233 public int bl_s_width, bl_e_width; /* Printing width of blink seq */ 234 public int above_mem, below_mem; /* Memory retained above/below screen */ 235 public int can_goto_line; /* Can move cursor to any line */ 236 public int clear_bg; /* Clear fills with background color */ 237 public int missing_cap = 0; /* Some capability is missing */ 238 public char *kent = NULL; /* Keypad ENTER sequence */ 239 public int term_init_done = FALSE; 240 public int full_screen = TRUE; 241 242 static int attrmode = AT_NORMAL; 243 static int termcap_debug = -1; 244 static int no_alt_screen; /* sc_init does not switch to alt screen */ 245 extern int binattr; 246 extern int one_screen; 247 #if LESSTEST 248 extern char *ttyin_name; 249 #endif /*LESSTEST*/ 250 251 #if !MSDOS_COMPILER 252 static char *cheaper(char *t1, char *t2, char *def); 253 static void tmodes(char *incap, char *outcap, char **instr, 254 char **outstr, char *def_instr, char *def_outstr, char **spp); 255 #endif 256 257 /* 258 * These two variables are sometimes defined in, 259 * and needed by, the termcap library. 260 */ 261 #if MUST_DEFINE_OSPEED 262 extern short ospeed; /* Terminal output baud rate */ 263 extern char PC; /* Pad character */ 264 #endif 265 #ifdef _OSK 266 short ospeed; 267 char PC_, *UP, *BC; 268 #endif 269 270 extern int quiet; /* If VERY_QUIET, use visual bell for bell */ 271 extern int no_vbell; 272 extern int no_back_scroll; 273 extern int swindow; 274 extern int no_init; 275 extern int no_keypad; 276 extern int sigs; 277 extern int wscroll; 278 extern int screen_trashed; 279 extern int top_scroll; 280 extern int quit_if_one_screen; 281 extern int oldbot; 282 extern int mousecap; 283 extern int is_tty; 284 extern int use_color; 285 #if HILITE_SEARCH 286 extern int hilite_search; 287 #endif 288 #if MSDOS_COMPILER==WIN32C 289 extern HANDLE tty; 290 extern DWORD console_mode; 291 #ifndef ENABLE_EXTENDED_FLAGS 292 #define ENABLE_EXTENDED_FLAGS 0x80 293 #define ENABLE_QUICK_EDIT_MODE 0x40 294 #endif 295 #else 296 extern int tty; 297 #endif 298 299 #if (HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS) || defined(TCGETA) 300 /* 301 * Set termio flags for use by less. 302 */ 303 static void set_termio_flags( 304 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 305 struct termios *s 306 #else 307 struct termio *s 308 #endif 309 ) 310 { 311 s->c_lflag &= ~(0 312 #ifdef ICANON 313 | ICANON 314 #endif 315 #ifdef ECHO 316 | ECHO 317 #endif 318 #ifdef ECHOE 319 | ECHOE 320 #endif 321 #ifdef ECHOK 322 | ECHOK 323 #endif 324 #if ECHONL 325 | ECHONL 326 #endif 327 ); 328 329 s->c_oflag |= (0 330 #ifdef OXTABS 331 | OXTABS 332 #else 333 #ifdef TAB3 334 | TAB3 335 #else 336 #ifdef XTABS 337 | XTABS 338 #endif 339 #endif 340 #endif 341 #ifdef OPOST 342 | OPOST 343 #endif 344 #ifdef ONLCR 345 | ONLCR 346 #endif 347 ); 348 349 s->c_oflag &= ~(0 350 #ifdef ONOEOT 351 | ONOEOT 352 #endif 353 #ifdef OCRNL 354 | OCRNL 355 #endif 356 #ifdef ONOCR 357 | ONOCR 358 #endif 359 #ifdef ONLRET 360 | ONLRET 361 #endif 362 ); 363 } 364 #endif 365 366 /* 367 * Change terminal to "raw mode", or restore to "normal" mode. 368 * "Raw mode" means 369 * 1. An outstanding read will complete on receipt of a single keystroke. 370 * 2. Input is not echoed. 371 * 3. On output, \n is mapped to \r\n. 372 * 4. \t is NOT expanded into spaces. 373 * 5. Signal-causing characters such as ctrl-C (interrupt), 374 * etc. are NOT disabled. 375 * It doesn't matter whether an input \n is mapped to \r, or vice versa. 376 */ 377 public void raw_mode(int on) 378 { 379 static int curr_on = 0; 380 381 if (on == curr_on) 382 return; 383 erase2_char = '\b'; /* in case OS doesn't know about erase2 */ 384 #if LESSTEST 385 if (ttyin_name != NULL) 386 { 387 /* {{ For consistent conditions when running tests. }} */ 388 erase_char = '\b'; 389 kill_char = CONTROL('U'); 390 werase_char = CONTROL('W'); 391 } else 392 #endif /*LESSTEST*/ 393 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 394 { 395 struct termios s; 396 static struct termios save_term; 397 static int saved_term = 0; 398 399 if (on) 400 { 401 /* 402 * Get terminal modes. 403 */ 404 if (tcgetattr(tty, &s) < 0) 405 { 406 erase_char = '\b'; 407 kill_char = CONTROL('U'); 408 werase_char = CONTROL('W'); 409 } else 410 { 411 /* 412 * Save modes and set certain variables dependent on modes. 413 */ 414 if (!saved_term) 415 { 416 save_term = s; 417 saved_term = 1; 418 } 419 #if HAVE_OSPEED 420 switch (cfgetospeed(&s)) 421 { 422 #ifdef B0 423 case B0: ospeed = 0; break; 424 #endif 425 #ifdef B50 426 case B50: ospeed = 1; break; 427 #endif 428 #ifdef B75 429 case B75: ospeed = 2; break; 430 #endif 431 #ifdef B110 432 case B110: ospeed = 3; break; 433 #endif 434 #ifdef B134 435 case B134: ospeed = 4; break; 436 #endif 437 #ifdef B150 438 case B150: ospeed = 5; break; 439 #endif 440 #ifdef B200 441 case B200: ospeed = 6; break; 442 #endif 443 #ifdef B300 444 case B300: ospeed = 7; break; 445 #endif 446 #ifdef B600 447 case B600: ospeed = 8; break; 448 #endif 449 #ifdef B1200 450 case B1200: ospeed = 9; break; 451 #endif 452 #ifdef B1800 453 case B1800: ospeed = 10; break; 454 #endif 455 #ifdef B2400 456 case B2400: ospeed = 11; break; 457 #endif 458 #ifdef B4800 459 case B4800: ospeed = 12; break; 460 #endif 461 #ifdef B9600 462 case B9600: ospeed = 13; break; 463 #endif 464 #ifdef EXTA 465 case EXTA: ospeed = 14; break; 466 #endif 467 #ifdef EXTB 468 case EXTB: ospeed = 15; break; 469 #endif 470 #ifdef B57600 471 case B57600: ospeed = 16; break; 472 #endif 473 #ifdef B115200 474 case B115200: ospeed = 17; break; 475 #endif 476 default: ; 477 } 478 #endif 479 erase_char = s.c_cc[VERASE]; 480 #ifdef VERASE2 481 erase2_char = s.c_cc[VERASE2]; 482 #endif 483 kill_char = s.c_cc[VKILL]; 484 #ifdef VWERASE 485 werase_char = s.c_cc[VWERASE]; 486 #else 487 werase_char = CONTROL('W'); 488 #endif 489 490 /* 491 * Set the modes to the way we want them. 492 */ 493 set_termio_flags(&s); 494 s.c_cc[VMIN] = 1; 495 s.c_cc[VTIME] = 0; 496 #ifdef VLNEXT 497 s.c_cc[VLNEXT] = 0; 498 #endif 499 #ifdef VDSUSP 500 s.c_cc[VDSUSP] = 0; 501 #endif 502 #ifdef VSTOP 503 s.c_cc[VSTOP] = 0; 504 #endif 505 #ifdef VSTART 506 s.c_cc[VSTART] = 0; 507 #endif 508 #if MUST_SET_LINE_DISCIPLINE 509 /* 510 * System's termios is broken; need to explicitly 511 * request TERMIODISC line discipline. 512 */ 513 s.c_line = TERMIODISC; 514 #endif 515 } 516 } else 517 { 518 /* 519 * Restore saved modes. 520 */ 521 s = save_term; 522 } 523 #if HAVE_FSYNC 524 fsync(tty); 525 #endif 526 tcsetattr(tty, TCSADRAIN, &s); 527 #if MUST_SET_LINE_DISCIPLINE 528 if (!on) 529 { 530 /* 531 * Broken termios *ignores* any line discipline 532 * except TERMIODISC. A different old line discipline 533 * is therefore not restored, yet. Restore the old 534 * line discipline by hand. 535 */ 536 ioctl(tty, TIOCSETD, &save_term.c_line); 537 } 538 #endif 539 } 540 #else 541 #ifdef TCGETA 542 { 543 struct termio s; 544 static struct termio save_term; 545 static int saved_term = 0; 546 547 if (on) 548 { 549 /* 550 * Get terminal modes. 551 */ 552 ioctl(tty, TCGETA, &s); 553 554 /* 555 * Save modes and set certain variables dependent on modes. 556 */ 557 if (!saved_term) 558 { 559 save_term = s; 560 saved_term = 1; 561 } 562 #if HAVE_OSPEED 563 ospeed = s.c_cflag & CBAUD; 564 #endif 565 erase_char = s.c_cc[VERASE]; 566 kill_char = s.c_cc[VKILL]; 567 #ifdef VWERASE 568 werase_char = s.c_cc[VWERASE]; 569 #else 570 werase_char = CONTROL('W'); 571 #endif 572 573 /* 574 * Set the modes to the way we want them. 575 */ 576 set_termio_flags(&s); 577 s.c_cc[VMIN] = 1; 578 s.c_cc[VTIME] = 0; 579 #ifdef VSTOP 580 s.c_cc[VSTOP] = 0; 581 #endif 582 #ifdef VSTART 583 s.c_cc[VSTART] = 0; 584 #endif 585 } else 586 { 587 /* 588 * Restore saved modes. 589 */ 590 s = save_term; 591 } 592 ioctl(tty, TCSETAW, &s); 593 } 594 #else 595 #ifdef TIOCGETP 596 { 597 struct sgttyb s; 598 static struct sgttyb save_term; 599 static int saved_term = 0; 600 601 if (on) 602 { 603 /* 604 * Get terminal modes. 605 */ 606 ioctl(tty, TIOCGETP, &s); 607 608 /* 609 * Save modes and set certain variables dependent on modes. 610 */ 611 if (!saved_term) 612 { 613 save_term = s; 614 saved_term = 1; 615 } 616 #if HAVE_OSPEED 617 ospeed = s.sg_ospeed; 618 #endif 619 erase_char = s.sg_erase; 620 kill_char = s.sg_kill; 621 werase_char = CONTROL('W'); 622 623 /* 624 * Set the modes to the way we want them. 625 */ 626 s.sg_flags |= CBREAK; 627 s.sg_flags &= ~(ECHO|XTABS); 628 } else 629 { 630 /* 631 * Restore saved modes. 632 */ 633 s = save_term; 634 } 635 ioctl(tty, TIOCSETN, &s); 636 } 637 #else 638 #ifdef _OSK 639 { 640 struct sgbuf s; 641 static struct sgbuf save_term; 642 static int saved_term = 0; 643 644 if (on) 645 { 646 /* 647 * Get terminal modes. 648 */ 649 _gs_opt(tty, &s); 650 651 /* 652 * Save modes and set certain variables dependent on modes. 653 */ 654 if (!saved_term) 655 { 656 save_term = s; 657 saved_term = 1; 658 } 659 erase_char = s.sg_bspch; 660 kill_char = s.sg_dlnch; 661 werase_char = CONTROL('W'); 662 663 /* 664 * Set the modes to the way we want them. 665 */ 666 s.sg_echo = 0; 667 s.sg_eofch = 0; 668 s.sg_pause = 0; 669 s.sg_psch = 0; 670 } else 671 { 672 /* 673 * Restore saved modes. 674 */ 675 s = save_term; 676 } 677 _ss_opt(tty, &s); 678 } 679 #else 680 /* MS-DOS, Windows, or OS2 */ 681 #if OS2 682 /* OS2 */ 683 LSIGNAL(SIGINT, SIG_IGN); 684 #endif 685 erase_char = '\b'; 686 #if MSDOS_COMPILER==DJGPPC 687 kill_char = CONTROL('U'); 688 /* 689 * So that when we shell out or run another program, its 690 * stdin is in cooked mode. We do not switch stdin to binary 691 * mode if fd0 is zero, since that means we were called before 692 * tty was reopened in open_getchr, in which case we would be 693 * changing the original stdin device outside less. 694 */ 695 if (fd0 != 0) 696 setmode(0, on ? O_BINARY : O_TEXT); 697 #else 698 kill_char = ESC; 699 #endif 700 werase_char = CONTROL('W'); 701 #endif 702 #endif 703 #endif 704 #endif 705 curr_on = on; 706 } 707 708 #if !MSDOS_COMPILER 709 /* 710 * Some glue to prevent calling termcap functions if tgetent() failed. 711 */ 712 static int hardcopy; 713 714 static char * ltget_env(char *capname) 715 { 716 char name[64]; 717 718 if (termcap_debug) 719 { 720 struct env { struct env *next; char *name; char *value; }; 721 static struct env *envs = NULL; 722 struct env *p; 723 for (p = envs; p != NULL; p = p->next) 724 if (strcmp(p->name, capname) == 0) 725 return p->value; 726 p = (struct env *) ecalloc(1, sizeof(struct env)); 727 p->name = save(capname); 728 p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char)); 729 sprintf(p->value, "<%s>", capname); 730 p->next = envs; 731 envs = p; 732 return p->value; 733 } 734 SNPRINTF1(name, sizeof(name), "LESS_TERMCAP_%s", capname); 735 return (lgetenv(name)); 736 } 737 738 static int ltgetflag(char *capname) 739 { 740 char *s; 741 742 if ((s = ltget_env(capname)) != NULL) 743 return (*s != '\0' && *s != '0'); 744 if (hardcopy) 745 return (0); 746 return (tgetflag(capname)); 747 } 748 749 static int ltgetnum(char *capname) 750 { 751 char *s; 752 753 if ((s = ltget_env(capname)) != NULL) 754 return (atoi(s)); 755 if (hardcopy) 756 return (-1); 757 return (tgetnum(capname)); 758 } 759 760 static char * ltgetstr(char *capname, char **pp) 761 { 762 char *s; 763 764 if ((s = ltget_env(capname)) != NULL) 765 return (s); 766 if (hardcopy) 767 return (NULL); 768 return (tgetstr(capname, pp)); 769 } 770 #endif /* MSDOS_COMPILER */ 771 772 /* 773 * Get size of the output screen. 774 */ 775 public void scrsize(void) 776 { 777 char *s; 778 int sys_height; 779 int sys_width; 780 #if !MSDOS_COMPILER 781 int n; 782 #endif 783 784 #define DEF_SC_WIDTH 80 785 #if MSDOS_COMPILER 786 #define DEF_SC_HEIGHT 25 787 #else 788 #define DEF_SC_HEIGHT 24 789 #endif 790 791 792 sys_width = sys_height = 0; 793 794 #if LESSTEST 795 if (ttyin_name != NULL) 796 #endif /*LESSTEST*/ 797 { 798 #if MSDOS_COMPILER==MSOFTC 799 { 800 struct videoconfig w; 801 _getvideoconfig(&w); 802 sys_height = w.numtextrows; 803 sys_width = w.numtextcols; 804 } 805 #else 806 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 807 { 808 struct text_info w; 809 gettextinfo(&w); 810 sys_height = w.screenheight; 811 sys_width = w.screenwidth; 812 } 813 #else 814 #if MSDOS_COMPILER==WIN32C 815 { 816 CONSOLE_SCREEN_BUFFER_INFO scr; 817 GetConsoleScreenBufferInfo(con_out, &scr); 818 sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1; 819 sys_width = scr.srWindow.Right - scr.srWindow.Left + 1; 820 } 821 #else 822 #if OS2 823 { 824 int s[2]; 825 _scrsize(s); 826 sys_width = s[0]; 827 sys_height = s[1]; 828 /* 829 * When using terminal emulators for XFree86/OS2, the 830 * _scrsize function does not work well. 831 * Call the scrsize.exe program to get the window size. 832 */ 833 windowid = getenv("WINDOWID"); 834 if (windowid != NULL) 835 { 836 FILE *fd = popen("scrsize", "rt"); 837 if (fd != NULL) 838 { 839 int w, h; 840 fscanf(fd, "%i %i", &w, &h); 841 if (w > 0 && h > 0) 842 { 843 sys_width = w; 844 sys_height = h; 845 } 846 pclose(fd); 847 } 848 } 849 } 850 #else 851 #ifdef TIOCGWINSZ 852 { 853 struct winsize w; 854 if (ioctl(2, TIOCGWINSZ, &w) == 0) 855 { 856 if (w.ws_row > 0) 857 sys_height = w.ws_row; 858 if (w.ws_col > 0) 859 sys_width = w.ws_col; 860 } 861 } 862 #else 863 #ifdef WIOCGETD 864 { 865 struct uwdata w; 866 if (ioctl(2, WIOCGETD, &w) == 0) 867 { 868 if (w.uw_height > 0) 869 sys_height = w.uw_height / w.uw_vs; 870 if (w.uw_width > 0) 871 sys_width = w.uw_width / w.uw_hs; 872 } 873 } 874 #endif 875 #endif 876 #endif 877 #endif 878 #endif 879 #endif 880 } 881 882 if (sys_height > 0) 883 sc_height = sys_height; 884 else if ((s = lgetenv("LINES")) != NULL) 885 sc_height = atoi(s); 886 #if !MSDOS_COMPILER 887 else if ((n = ltgetnum("li")) > 0) 888 sc_height = n; 889 #endif 890 if ((s = lgetenv("LESS_LINES")) != NULL) 891 { 892 int height = atoi(s); 893 sc_height = (height < 0) ? sc_height + height : height; 894 full_screen = FALSE; 895 } 896 if (sc_height <= 0) 897 sc_height = DEF_SC_HEIGHT; 898 899 if (sys_width > 0) 900 sc_width = sys_width; 901 else if ((s = lgetenv("COLUMNS")) != NULL) 902 sc_width = atoi(s); 903 #if !MSDOS_COMPILER 904 else if ((n = ltgetnum("co")) > 0) 905 sc_width = n; 906 #endif 907 if ((s = lgetenv("LESS_COLUMNS")) != NULL) 908 { 909 int width = atoi(s); 910 sc_width = (width < 0) ? sc_width + width : width; 911 } 912 if (sc_width <= 0) 913 sc_width = DEF_SC_WIDTH; 914 } 915 916 #if MSDOS_COMPILER==MSOFTC 917 /* 918 * Figure out how many empty loops it takes to delay a millisecond. 919 */ 920 static void get_clock(void) 921 { 922 clock_t start; 923 924 /* 925 * Get synchronized at the start of a tick. 926 */ 927 start = clock(); 928 while (clock() == start) 929 ; 930 /* 931 * Now count loops till the next tick. 932 */ 933 start = clock(); 934 msec_loops = 0; 935 while (clock() == start) 936 msec_loops++; 937 /* 938 * Convert from (loops per clock) to (loops per millisecond). 939 */ 940 msec_loops *= CLOCKS_PER_SEC; 941 msec_loops /= 1000; 942 } 943 944 /* 945 * Delay for a specified number of milliseconds. 946 */ 947 static void delay(int msec) 948 { 949 long i; 950 951 while (msec-- > 0) 952 { 953 for (i = 0; i < msec_loops; i++) 954 (void) clock(); 955 } 956 } 957 #endif 958 959 /* 960 * Return the characters actually input by a "special" key. 961 */ 962 public char * special_key_str(int key) 963 { 964 static char tbuf[40]; 965 char *s; 966 #if MSDOS_COMPILER || OS2 967 static char k_right[] = { '\340', PCK_RIGHT, 0 }; 968 static char k_left[] = { '\340', PCK_LEFT, 0 }; 969 static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 }; 970 static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 }; 971 static char k_insert[] = { '\340', PCK_INSERT, 0 }; 972 static char k_delete[] = { '\340', PCK_DELETE, 0 }; 973 static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 }; 974 static char k_ctl_backspace[] = { '\177', 0 }; 975 static char k_backspace[] = { '\b', 0 }; 976 static char k_home[] = { '\340', PCK_HOME, 0 }; 977 static char k_end[] = { '\340', PCK_END, 0 }; 978 static char k_up[] = { '\340', PCK_UP, 0 }; 979 static char k_down[] = { '\340', PCK_DOWN, 0 }; 980 static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 }; 981 static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 }; 982 static char k_pageup[] = { '\340', PCK_PAGEUP, 0 }; 983 static char k_f1[] = { '\340', PCK_F1, 0 }; 984 #endif 985 #if !MSDOS_COMPILER 986 char *sp = tbuf; 987 #endif 988 989 switch (key) 990 { 991 #if OS2 992 /* 993 * If windowid is not NULL, assume less is executed in 994 * the XFree86 environment. 995 */ 996 case SK_RIGHT_ARROW: 997 s = windowid ? ltgetstr("kr", &sp) : k_right; 998 break; 999 case SK_LEFT_ARROW: 1000 s = windowid ? ltgetstr("kl", &sp) : k_left; 1001 break; 1002 case SK_UP_ARROW: 1003 s = windowid ? ltgetstr("ku", &sp) : k_up; 1004 break; 1005 case SK_DOWN_ARROW: 1006 s = windowid ? ltgetstr("kd", &sp) : k_down; 1007 break; 1008 case SK_PAGE_UP: 1009 s = windowid ? ltgetstr("kP", &sp) : k_pageup; 1010 break; 1011 case SK_PAGE_DOWN: 1012 s = windowid ? ltgetstr("kN", &sp) : k_pagedown; 1013 break; 1014 case SK_HOME: 1015 s = windowid ? ltgetstr("kh", &sp) : k_home; 1016 break; 1017 case SK_END: 1018 s = windowid ? ltgetstr("@7", &sp) : k_end; 1019 break; 1020 case SK_DELETE: 1021 s = windowid ? ltgetstr("kD", &sp) : k_delete; 1022 if (s == NULL) 1023 { 1024 tbuf[0] = '\177'; 1025 tbuf[1] = '\0'; 1026 s = tbuf; 1027 } 1028 break; 1029 #endif 1030 #if MSDOS_COMPILER 1031 case SK_RIGHT_ARROW: 1032 s = k_right; 1033 break; 1034 case SK_LEFT_ARROW: 1035 s = k_left; 1036 break; 1037 case SK_UP_ARROW: 1038 s = k_up; 1039 break; 1040 case SK_DOWN_ARROW: 1041 s = k_down; 1042 break; 1043 case SK_PAGE_UP: 1044 s = k_pageup; 1045 break; 1046 case SK_PAGE_DOWN: 1047 s = k_pagedown; 1048 break; 1049 case SK_HOME: 1050 s = k_home; 1051 break; 1052 case SK_END: 1053 s = k_end; 1054 break; 1055 case SK_DELETE: 1056 s = k_delete; 1057 break; 1058 #endif 1059 #if MSDOS_COMPILER || OS2 1060 case SK_INSERT: 1061 s = k_insert; 1062 break; 1063 case SK_CTL_LEFT_ARROW: 1064 s = k_ctl_left; 1065 break; 1066 case SK_CTL_RIGHT_ARROW: 1067 s = k_ctl_right; 1068 break; 1069 case SK_CTL_BACKSPACE: 1070 s = k_ctl_backspace; 1071 break; 1072 case SK_CTL_DELETE: 1073 s = k_ctl_delete; 1074 break; 1075 case SK_BACKSPACE: 1076 s = k_backspace; 1077 break; 1078 case SK_F1: 1079 s = k_f1; 1080 break; 1081 case SK_BACKTAB: 1082 s = k_backtab; 1083 break; 1084 #else 1085 case SK_RIGHT_ARROW: 1086 s = ltgetstr("kr", &sp); 1087 break; 1088 case SK_LEFT_ARROW: 1089 s = ltgetstr("kl", &sp); 1090 break; 1091 case SK_UP_ARROW: 1092 s = ltgetstr("ku", &sp); 1093 break; 1094 case SK_DOWN_ARROW: 1095 s = ltgetstr("kd", &sp); 1096 break; 1097 case SK_PAGE_UP: 1098 s = ltgetstr("kP", &sp); 1099 break; 1100 case SK_PAGE_DOWN: 1101 s = ltgetstr("kN", &sp); 1102 break; 1103 case SK_HOME: 1104 s = ltgetstr("kh", &sp); 1105 break; 1106 case SK_END: 1107 s = ltgetstr("@7", &sp); 1108 break; 1109 case SK_DELETE: 1110 s = ltgetstr("kD", &sp); 1111 if (s == NULL) 1112 { 1113 tbuf[0] = '\177'; 1114 tbuf[1] = '\0'; 1115 s = tbuf; 1116 } 1117 break; 1118 case SK_BACKSPACE: 1119 s = ltgetstr("kb", &sp); 1120 if (s == NULL) 1121 { 1122 tbuf[0] = '\b'; 1123 tbuf[1] = '\0'; 1124 s = tbuf; 1125 } 1126 break; 1127 #endif 1128 case SK_CONTROL_K: 1129 tbuf[0] = CONTROL('K'); 1130 tbuf[1] = '\0'; 1131 s = tbuf; 1132 break; 1133 default: 1134 return (NULL); 1135 } 1136 return (s); 1137 } 1138 1139 /* 1140 * Get terminal capabilities via termcap. 1141 */ 1142 public void get_term(void) 1143 { 1144 termcap_debug = !isnullenv(lgetenv("LESS_TERMCAP_DEBUG")); 1145 #if MSDOS_COMPILER 1146 auto_wrap = 1; 1147 ignaw = 0; 1148 can_goto_line = 1; 1149 clear_bg = 1; 1150 /* 1151 * Set up default colors. 1152 * The xx_s_width and xx_e_width vars are already initialized to 0. 1153 */ 1154 #if MSDOS_COMPILER==MSOFTC 1155 sy_bg_color = _getbkcolor(); 1156 sy_fg_color = _gettextcolor(); 1157 get_clock(); 1158 #else 1159 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1160 { 1161 struct text_info w; 1162 gettextinfo(&w); 1163 sy_bg_color = (w.attribute >> 4) & 0x0F; 1164 sy_fg_color = (w.attribute >> 0) & 0x0F; 1165 } 1166 #else 1167 #if MSDOS_COMPILER==WIN32C 1168 { 1169 CONSOLE_SCREEN_BUFFER_INFO scr; 1170 1171 con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE); 1172 /* 1173 * Always open stdin in binary. Note this *must* be done 1174 * before any file operations have been done on fd0. 1175 */ 1176 SET_BINARY(0); 1177 GetConsoleMode(con_out, &init_output_mode); 1178 GetConsoleScreenBufferInfo(con_out, &scr); 1179 curr_attr = scr.wAttributes; 1180 sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */ 1181 sy_fg_color = curr_attr & FG_COLORS; 1182 } 1183 #endif 1184 #endif 1185 #endif 1186 nm_fg_color = sy_fg_color; 1187 nm_bg_color = sy_bg_color; 1188 bo_fg_color = 11; 1189 bo_bg_color = 0; 1190 ul_fg_color = 9; 1191 ul_bg_color = 0; 1192 so_fg_color = 15; 1193 so_bg_color = 9; 1194 bl_fg_color = 15; 1195 bl_bg_color = 0; 1196 sgr_mode = 0; 1197 1198 /* 1199 * Get size of the screen. 1200 */ 1201 scrsize(); 1202 pos_init(); 1203 1204 1205 #else /* !MSDOS_COMPILER */ 1206 { 1207 char *sp; 1208 char *t1, *t2; 1209 char *term; 1210 /* 1211 * Some termcap libraries assume termbuf is static 1212 * (accessible after tgetent returns). 1213 */ 1214 static char termbuf[TERMBUF_SIZE]; 1215 static char sbuf[TERMSBUF_SIZE]; 1216 1217 #if OS2 1218 /* 1219 * Make sure the termcap database is available. 1220 */ 1221 sp = lgetenv("TERMCAP"); 1222 if (isnullenv(sp)) 1223 { 1224 char *termcap; 1225 if ((sp = homefile("termcap.dat")) != NULL) 1226 { 1227 termcap = (char *) ecalloc(strlen(sp)+9, sizeof(char)); 1228 sprintf(termcap, "TERMCAP=%s", sp); 1229 free(sp); 1230 putenv(termcap); 1231 } 1232 } 1233 #endif 1234 /* 1235 * Find out what kind of terminal this is. 1236 */ 1237 if ((term = lgetenv("TERM")) == NULL) 1238 term = DEFAULT_TERM; 1239 hardcopy = 0; 1240 /* {{ Should probably just pass NULL instead of termbuf. }} */ 1241 if (tgetent(termbuf, term) != TGETENT_OK) 1242 hardcopy = 1; 1243 if (ltgetflag("hc")) 1244 hardcopy = 1; 1245 1246 /* 1247 * Get size of the screen. 1248 */ 1249 scrsize(); 1250 pos_init(); 1251 1252 auto_wrap = ltgetflag("am"); 1253 ignaw = ltgetflag("xn"); 1254 above_mem = ltgetflag("da"); 1255 below_mem = ltgetflag("db"); 1256 clear_bg = ltgetflag("ut"); 1257 no_alt_screen = ltgetflag("NR"); 1258 1259 /* 1260 * Assumes termcap variable "sg" is the printing width of: 1261 * the standout sequence, the end standout sequence, 1262 * the underline sequence, the end underline sequence, 1263 * the boldface sequence, and the end boldface sequence. 1264 */ 1265 if ((so_s_width = ltgetnum("sg")) < 0) 1266 so_s_width = 0; 1267 so_e_width = so_s_width; 1268 1269 bo_s_width = bo_e_width = so_s_width; 1270 ul_s_width = ul_e_width = so_s_width; 1271 bl_s_width = bl_e_width = so_s_width; 1272 1273 #if HILITE_SEARCH 1274 if (so_s_width > 0 || so_e_width > 0) 1275 /* 1276 * Disable highlighting by default on magic cookie terminals. 1277 * Turning on highlighting might change the displayed width 1278 * of a line, causing the display to get messed up. 1279 * The user can turn it back on with -g, 1280 * but she won't like the results. 1281 */ 1282 hilite_search = 0; 1283 #endif 1284 1285 /* 1286 * Get various string-valued capabilities. 1287 */ 1288 sp = sbuf; 1289 1290 #if HAVE_OSPEED 1291 sc_pad = ltgetstr("pc", &sp); 1292 if (sc_pad != NULL) 1293 PC = *sc_pad; 1294 #endif 1295 1296 sc_s_keypad = ltgetstr("ks", &sp); 1297 if (sc_s_keypad == NULL) 1298 sc_s_keypad = ""; 1299 sc_e_keypad = ltgetstr("ke", &sp); 1300 if (sc_e_keypad == NULL) 1301 sc_e_keypad = ""; 1302 kent = ltgetstr("@8", &sp); 1303 1304 sc_s_mousecap = ltgetstr("MOUSE_START", &sp); 1305 if (sc_s_mousecap == NULL) 1306 sc_s_mousecap = ESCS "[?1000h" ESCS "[?1006h"; 1307 sc_e_mousecap = ltgetstr("MOUSE_END", &sp); 1308 if (sc_e_mousecap == NULL) 1309 sc_e_mousecap = ESCS "[?1006l" ESCS "[?1000l"; 1310 1311 sc_init = ltgetstr("ti", &sp); 1312 if (sc_init == NULL) 1313 sc_init = ""; 1314 1315 sc_deinit= ltgetstr("te", &sp); 1316 if (sc_deinit == NULL) 1317 sc_deinit = ""; 1318 1319 sc_eol_clear = ltgetstr("ce", &sp); 1320 if (sc_eol_clear == NULL || *sc_eol_clear == '\0') 1321 { 1322 missing_cap = 1; 1323 sc_eol_clear = ""; 1324 } 1325 1326 sc_eos_clear = ltgetstr("cd", &sp); 1327 if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0')) 1328 { 1329 missing_cap = 1; 1330 sc_eos_clear = ""; 1331 } 1332 1333 sc_clear = ltgetstr("cl", &sp); 1334 if (sc_clear == NULL || *sc_clear == '\0') 1335 { 1336 missing_cap = 1; 1337 sc_clear = "\n\n"; 1338 } 1339 1340 sc_move = ltgetstr("cm", &sp); 1341 if (sc_move == NULL || *sc_move == '\0') 1342 { 1343 /* 1344 * This is not an error here, because we don't 1345 * always need sc_move. 1346 * We need it only if we don't have home or lower-left. 1347 */ 1348 sc_move = ""; 1349 can_goto_line = 0; 1350 } else 1351 can_goto_line = 1; 1352 1353 tmodes("so", "se", &sc_s_in, &sc_s_out, "", "", &sp); 1354 tmodes("us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp); 1355 tmodes("md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp); 1356 tmodes("mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp); 1357 1358 sc_visual_bell = ltgetstr("vb", &sp); 1359 if (sc_visual_bell == NULL) 1360 sc_visual_bell = ""; 1361 1362 if (ltgetflag("bs")) 1363 sc_backspace = "\b"; 1364 else 1365 { 1366 sc_backspace = ltgetstr("bc", &sp); 1367 if (sc_backspace == NULL || *sc_backspace == '\0') 1368 sc_backspace = "\b"; 1369 } 1370 1371 /* 1372 * Choose between using "ho" and "cm" ("home" and "cursor move") 1373 * to move the cursor to the upper left corner of the screen. 1374 */ 1375 t1 = ltgetstr("ho", &sp); 1376 if (t1 == NULL) 1377 t1 = ""; 1378 if (*sc_move == '\0') 1379 t2 = ""; 1380 else 1381 { 1382 strcpy(sp, tgoto(sc_move, 0, 0)); 1383 t2 = sp; 1384 sp += strlen(sp) + 1; 1385 } 1386 sc_home = cheaper(t1, t2, "|\b^"); 1387 1388 /* 1389 * Choose between using "ll" and "cm" ("lower left" and "cursor move") 1390 * to move the cursor to the lower left corner of the screen. 1391 */ 1392 t1 = ltgetstr("ll", &sp); 1393 if (t1 == NULL || !full_screen) 1394 t1 = ""; 1395 if (*sc_move == '\0') 1396 t2 = ""; 1397 else 1398 { 1399 strcpy(sp, tgoto(sc_move, 0, sc_height-1)); 1400 t2 = sp; 1401 sp += strlen(sp) + 1; 1402 } 1403 sc_lower_left = cheaper(t1, t2, "\r"); 1404 1405 /* 1406 * Get carriage return string. 1407 */ 1408 sc_return = ltgetstr("cr", &sp); 1409 if (sc_return == NULL) 1410 sc_return = "\r"; 1411 1412 /* 1413 * Choose between using "al" or "sr" ("add line" or "scroll reverse") 1414 * to add a line at the top of the screen. 1415 */ 1416 t1 = ltgetstr("al", &sp); 1417 if (t1 == NULL) 1418 t1 = ""; 1419 t2 = ltgetstr("sr", &sp); 1420 if (t2 == NULL) 1421 t2 = ""; 1422 #if OS2 1423 if (*t1 == '\0' && *t2 == '\0') 1424 sc_addline = ""; 1425 else 1426 #endif 1427 if (above_mem) 1428 sc_addline = t1; 1429 else 1430 sc_addline = cheaper(t1, t2, ""); 1431 if (*sc_addline == '\0') 1432 { 1433 /* 1434 * Force repaint on any backward movement. 1435 */ 1436 no_back_scroll = 1; 1437 } 1438 } 1439 #endif /* MSDOS_COMPILER */ 1440 } 1441 1442 #if !MSDOS_COMPILER 1443 /* 1444 * Return the cost of displaying a termcap string. 1445 * We use the trick of calling tputs, but as a char printing function 1446 * we give it inc_costcount, which just increments "costcount". 1447 * This tells us how many chars would be printed by using this string. 1448 * {{ Couldn't we just use strlen? }} 1449 */ 1450 static int costcount; 1451 1452 /*ARGSUSED*/ 1453 static int inc_costcount(int c) 1454 { 1455 costcount++; 1456 return (c); 1457 } 1458 1459 static int cost(char *t) 1460 { 1461 costcount = 0; 1462 tputs(t, sc_height, inc_costcount); 1463 return (costcount); 1464 } 1465 1466 /* 1467 * Return the "best" of the two given termcap strings. 1468 * The best, if both exist, is the one with the lower 1469 * cost (see cost() function). 1470 */ 1471 static char * cheaper(char *t1, char *t2, char *def) 1472 { 1473 if (*t1 == '\0' && *t2 == '\0') 1474 { 1475 missing_cap = 1; 1476 return (def); 1477 } 1478 if (*t1 == '\0') 1479 return (t2); 1480 if (*t2 == '\0') 1481 return (t1); 1482 if (cost(t1) < cost(t2)) 1483 return (t1); 1484 return (t2); 1485 } 1486 1487 static void tmodes(char *incap, char *outcap, char **instr, char **outstr, char *def_instr, char *def_outstr, char **spp) 1488 { 1489 *instr = ltgetstr(incap, spp); 1490 if (*instr == NULL) 1491 { 1492 /* Use defaults. */ 1493 *instr = def_instr; 1494 *outstr = def_outstr; 1495 return; 1496 } 1497 1498 *outstr = ltgetstr(outcap, spp); 1499 if (*outstr == NULL) 1500 /* No specific out capability; use "me". */ 1501 *outstr = ltgetstr("me", spp); 1502 if (*outstr == NULL) 1503 /* Don't even have "me"; use a null string. */ 1504 *outstr = ""; 1505 } 1506 1507 #endif /* MSDOS_COMPILER */ 1508 1509 1510 /* 1511 * Below are the functions which perform all the 1512 * terminal-specific screen manipulation. 1513 */ 1514 1515 1516 #if MSDOS_COMPILER 1517 1518 #if MSDOS_COMPILER==WIN32C 1519 static void _settextposition(int row, int col) 1520 { 1521 COORD cpos; 1522 CONSOLE_SCREEN_BUFFER_INFO csbi; 1523 1524 GetConsoleScreenBufferInfo(con_out, &csbi); 1525 cpos.X = csbi.srWindow.Left + (col - 1); 1526 cpos.Y = csbi.srWindow.Top + (row - 1); 1527 SetConsoleCursorPosition(con_out, cpos); 1528 } 1529 #endif 1530 1531 /* 1532 * Initialize the screen to the correct color at startup. 1533 */ 1534 static void initcolor(void) 1535 { 1536 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1537 intensevideo(); 1538 #endif 1539 SETCOLORS(nm_fg_color, nm_bg_color); 1540 #if 0 1541 /* 1542 * This clears the screen at startup. This is different from 1543 * the behavior of other versions of less. Disable it for now. 1544 */ 1545 char *blanks; 1546 int row; 1547 int col; 1548 1549 /* 1550 * Create a complete, blank screen using "normal" colors. 1551 */ 1552 SETCOLORS(nm_fg_color, nm_bg_color); 1553 blanks = (char *) ecalloc(width+1, sizeof(char)); 1554 for (col = 0; col < sc_width; col++) 1555 blanks[col] = ' '; 1556 blanks[sc_width] = '\0'; 1557 for (row = 0; row < sc_height; row++) 1558 _outtext(blanks); 1559 free(blanks); 1560 #endif 1561 } 1562 #endif 1563 1564 #if MSDOS_COMPILER==WIN32C 1565 1566 /* 1567 * Enable virtual terminal processing, if available. 1568 */ 1569 static void win32_init_vt_term(void) 1570 { 1571 DWORD output_mode; 1572 1573 if (vt_enabled == 0 || (vt_enabled == 1 && con_out == con_out_ours)) 1574 return; 1575 1576 GetConsoleMode(con_out, &output_mode); 1577 vt_enabled = SetConsoleMode(con_out, 1578 output_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING); 1579 if (vt_enabled) 1580 { 1581 auto_wrap = 0; 1582 ignaw = 1; 1583 } 1584 } 1585 1586 static void win32_deinit_vt_term(void) 1587 { 1588 if (vt_enabled == 1 && con_out == con_out_save) 1589 SetConsoleMode(con_out, init_output_mode); 1590 } 1591 1592 /* 1593 * Termcap-like init with a private win32 console. 1594 */ 1595 static void win32_init_term(void) 1596 { 1597 CONSOLE_SCREEN_BUFFER_INFO scr; 1598 COORD size; 1599 1600 if (con_out_save == INVALID_HANDLE_VALUE) 1601 return; 1602 1603 GetConsoleScreenBufferInfo(con_out_save, &scr); 1604 1605 if (con_out_ours == INVALID_HANDLE_VALUE) 1606 { 1607 /* 1608 * Create our own screen buffer, so that we 1609 * may restore the original when done. 1610 */ 1611 con_out_ours = CreateConsoleScreenBuffer( 1612 GENERIC_WRITE | GENERIC_READ, 1613 FILE_SHARE_WRITE | FILE_SHARE_READ, 1614 (LPSECURITY_ATTRIBUTES) NULL, 1615 CONSOLE_TEXTMODE_BUFFER, 1616 (LPVOID) NULL); 1617 } 1618 1619 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 1620 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 1621 SetConsoleScreenBufferSize(con_out_ours, size); 1622 SetConsoleActiveScreenBuffer(con_out_ours); 1623 con_out = con_out_ours; 1624 } 1625 1626 /* 1627 * Restore the startup console. 1628 */ 1629 static void win32_deinit_term(void) 1630 { 1631 if (con_out_save == INVALID_HANDLE_VALUE) 1632 return; 1633 if (quitting) 1634 (void) CloseHandle(con_out_ours); 1635 SetConsoleActiveScreenBuffer(con_out_save); 1636 con_out = con_out_save; 1637 } 1638 1639 #endif 1640 1641 #if !MSDOS_COMPILER 1642 static void do_tputs(char *str, int affcnt, int (*f_putc)(int)) 1643 { 1644 #if LESSTEST 1645 if (ttyin_name != NULL && f_putc == putchr) 1646 putstr(str); 1647 else 1648 #endif /*LESSTEST*/ 1649 tputs(str, affcnt, f_putc); 1650 } 1651 1652 /* 1653 * Like tputs but we handle $<...> delay strings here because 1654 * some implementations of tputs don't perform delays correctly. 1655 */ 1656 static void ltputs(char *str, int affcnt, int (*f_putc)(int)) 1657 { 1658 while (str != NULL && *str != '\0') 1659 { 1660 #if HAVE_STRSTR 1661 char *obrac = strstr(str, "$<"); 1662 if (obrac != NULL) 1663 { 1664 char str2[64]; 1665 int slen = obrac - str; 1666 if (slen < sizeof(str2)) 1667 { 1668 int delay; 1669 /* Output first part of string (before "$<"). */ 1670 memcpy(str2, str, slen); 1671 str2[slen] = '\0'; 1672 do_tputs(str2, affcnt, f_putc); 1673 str += slen + 2; 1674 /* Perform the delay. */ 1675 delay = lstrtoi(str, &str, 10); 1676 if (*str == '*') 1677 if (ckd_mul(&delay, delay, affcnt)) 1678 delay = INT_MAX; 1679 flush(); 1680 sleep_ms(delay); 1681 /* Skip past closing ">" at end of delay string. */ 1682 str = strstr(str, ">"); 1683 if (str != NULL) 1684 str++; 1685 continue; 1686 } 1687 } 1688 #endif 1689 /* Pass the rest of the string to tputs and we're done. */ 1690 do_tputs(str, affcnt, f_putc); 1691 break; 1692 } 1693 } 1694 #endif /* MSDOS_COMPILER */ 1695 1696 /* 1697 * Configure the termimal so mouse clicks and wheel moves 1698 * produce input to less. 1699 */ 1700 public void init_mouse(void) 1701 { 1702 #if !MSDOS_COMPILER 1703 ltputs(sc_s_mousecap, sc_height, putchr); 1704 #else 1705 #if MSDOS_COMPILER==WIN32C 1706 SetConsoleMode(tty, ENABLE_PROCESSED_INPUT | ENABLE_MOUSE_INPUT 1707 | ENABLE_EXTENDED_FLAGS /* disable quick edit */); 1708 1709 #endif 1710 #endif 1711 } 1712 1713 /* 1714 * Configure the terminal so mouse clicks and wheel moves 1715 * are handled by the system (so text can be selected, etc). 1716 */ 1717 public void deinit_mouse(void) 1718 { 1719 #if !MSDOS_COMPILER 1720 ltputs(sc_e_mousecap, sc_height, putchr); 1721 #else 1722 #if MSDOS_COMPILER==WIN32C 1723 SetConsoleMode(tty, ENABLE_PROCESSED_INPUT | ENABLE_EXTENDED_FLAGS 1724 | (console_mode & ENABLE_QUICK_EDIT_MODE)); 1725 #endif 1726 #endif 1727 } 1728 1729 /* 1730 * Initialize terminal 1731 */ 1732 public void init(void) 1733 { 1734 clear_bot_if_needed(); 1735 #if !MSDOS_COMPILER 1736 if (!(quit_if_one_screen && one_screen)) 1737 { 1738 if (!no_init) 1739 { 1740 ltputs(sc_init, sc_height, putchr); 1741 /* 1742 * Some terminals leave the cursor unmoved when switching 1743 * to the alt screen. To avoid having the text appear at 1744 * a seemingly random line on the alt screen, move to 1745 * lower left if we are using an alt screen. 1746 */ 1747 if (*sc_init != '\0' && *sc_deinit != '\0' && !no_alt_screen) 1748 lower_left(); 1749 term_init_done = 1; 1750 } 1751 if (!no_keypad) 1752 ltputs(sc_s_keypad, sc_height, putchr); 1753 if (mousecap) 1754 init_mouse(); 1755 } 1756 init_done = 1; 1757 if (top_scroll) 1758 { 1759 int i; 1760 1761 /* 1762 * This is nice to terminals with no alternate screen, 1763 * but with saved scrolled-off-the-top lines. This way, 1764 * no previous line is lost, but we start with a whole 1765 * screen to ourself. 1766 */ 1767 for (i = 1; i < sc_height; i++) 1768 putchr('\n'); 1769 } else 1770 line_left(); 1771 #else 1772 #if MSDOS_COMPILER==WIN32C 1773 if (!(quit_if_one_screen && one_screen)) 1774 { 1775 if (!no_init) 1776 { 1777 win32_init_term(); 1778 term_init_done = 1; 1779 } 1780 if (mousecap) 1781 init_mouse(); 1782 1783 } 1784 win32_init_vt_term(); 1785 #endif 1786 init_done = 1; 1787 initcolor(); 1788 flush(); 1789 #endif 1790 } 1791 1792 /* 1793 * Deinitialize terminal 1794 */ 1795 public void deinit(void) 1796 { 1797 if (!init_done) 1798 return; 1799 #if !MSDOS_COMPILER 1800 if (!(quit_if_one_screen && one_screen)) 1801 { 1802 if (mousecap) 1803 deinit_mouse(); 1804 if (!no_keypad) 1805 ltputs(sc_e_keypad, sc_height, putchr); 1806 if (!no_init) 1807 ltputs(sc_deinit, sc_height, putchr); 1808 } 1809 #else 1810 /* Restore system colors. */ 1811 SETCOLORS(sy_fg_color, sy_bg_color); 1812 #if MSDOS_COMPILER==WIN32C 1813 win32_deinit_vt_term(); 1814 if (!(quit_if_one_screen && one_screen)) 1815 { 1816 if (mousecap) 1817 deinit_mouse(); 1818 if (!no_init) 1819 win32_deinit_term(); 1820 } 1821 #else 1822 /* Need clreol to make SETCOLORS take effect. */ 1823 clreol(); 1824 #endif 1825 #endif 1826 init_done = 0; 1827 } 1828 1829 /* 1830 * Are we interactive (ie. writing to an initialized tty)? 1831 */ 1832 public int interactive(void) 1833 { 1834 return (is_tty && init_done); 1835 } 1836 1837 static void assert_interactive(void) 1838 { 1839 if (interactive()) return; 1840 /* abort(); */ 1841 } 1842 1843 /* 1844 * Home cursor (move to upper left corner of screen). 1845 */ 1846 public void home(void) 1847 { 1848 assert_interactive(); 1849 #if !MSDOS_COMPILER 1850 ltputs(sc_home, 1, putchr); 1851 #else 1852 flush(); 1853 _settextposition(1,1); 1854 #endif 1855 } 1856 1857 #if LESSTEST 1858 public void dump_screen(void) 1859 { 1860 char dump_cmd[32]; 1861 SNPRINTF1(dump_cmd, sizeof(dump_cmd), ESCS"0;0;%dR", sc_width * sc_height); 1862 ltputs(dump_cmd, sc_height, putchr); 1863 flush(); 1864 } 1865 #endif /*LESSTEST*/ 1866 1867 /* 1868 * Add a blank line (called with cursor at home). 1869 * Should scroll the display down. 1870 */ 1871 public void add_line(void) 1872 { 1873 assert_interactive(); 1874 #if !MSDOS_COMPILER 1875 ltputs(sc_addline, sc_height, putchr); 1876 #else 1877 flush(); 1878 #if MSDOS_COMPILER==MSOFTC 1879 _scrolltextwindow(_GSCROLLDOWN); 1880 _settextposition(1,1); 1881 #else 1882 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1883 movetext(1,1, sc_width,sc_height-1, 1,2); 1884 gotoxy(1,1); 1885 clreol(); 1886 #else 1887 #if MSDOS_COMPILER==WIN32C 1888 { 1889 CHAR_INFO fillchar; 1890 SMALL_RECT rcSrc, rcClip; 1891 COORD new_org; 1892 CONSOLE_SCREEN_BUFFER_INFO csbi; 1893 1894 GetConsoleScreenBufferInfo(con_out,&csbi); 1895 1896 /* The clip rectangle is the entire visible screen. */ 1897 rcClip.Left = csbi.srWindow.Left; 1898 rcClip.Top = csbi.srWindow.Top; 1899 rcClip.Right = csbi.srWindow.Right; 1900 rcClip.Bottom = csbi.srWindow.Bottom; 1901 1902 /* The source rectangle is the visible screen minus the last line. */ 1903 rcSrc = rcClip; 1904 rcSrc.Bottom--; 1905 1906 /* Move the top left corner of the source window down one row. */ 1907 new_org.X = rcSrc.Left; 1908 new_org.Y = rcSrc.Top + 1; 1909 1910 /* Fill the right character and attributes. */ 1911 fillchar.Char.AsciiChar = ' '; 1912 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 1913 fillchar.Attributes = curr_attr; 1914 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 1915 _settextposition(1,1); 1916 } 1917 #endif 1918 #endif 1919 #endif 1920 #endif 1921 } 1922 1923 #if 0 1924 /* 1925 * Remove the n topmost lines and scroll everything below it in the 1926 * window upward. This is needed to stop leaking the topmost line 1927 * into the scrollback buffer when we go down-one-line (in WIN32). 1928 */ 1929 public void remove_top(int n) 1930 { 1931 #if MSDOS_COMPILER==WIN32C 1932 SMALL_RECT rcSrc, rcClip; 1933 CHAR_INFO fillchar; 1934 COORD new_org; 1935 CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ 1936 1937 if (n >= sc_height - 1) 1938 { 1939 clear(); 1940 home(); 1941 return; 1942 } 1943 1944 flush(); 1945 1946 GetConsoleScreenBufferInfo(con_out, &csbi); 1947 1948 /* Get the extent of all-visible-rows-but-the-last. */ 1949 rcSrc.Left = csbi.srWindow.Left; 1950 rcSrc.Top = csbi.srWindow.Top + n; 1951 rcSrc.Right = csbi.srWindow.Right; 1952 rcSrc.Bottom = csbi.srWindow.Bottom; 1953 1954 /* Get the clip rectangle. */ 1955 rcClip.Left = rcSrc.Left; 1956 rcClip.Top = csbi.srWindow.Top; 1957 rcClip.Right = rcSrc.Right; 1958 rcClip.Bottom = rcSrc.Bottom ; 1959 1960 /* Move the source window up n rows. */ 1961 new_org.X = rcSrc.Left; 1962 new_org.Y = rcSrc.Top - n; 1963 1964 /* Fill the right character and attributes. */ 1965 fillchar.Char.AsciiChar = ' '; 1966 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 1967 fillchar.Attributes = curr_attr; 1968 1969 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 1970 1971 /* Position cursor on first blank line. */ 1972 goto_line(sc_height - n - 1); 1973 #endif 1974 } 1975 #endif 1976 1977 #if MSDOS_COMPILER==WIN32C 1978 /* 1979 * Clear the screen. 1980 */ 1981 static void win32_clear(void) 1982 { 1983 /* 1984 * This will clear only the currently visible rows of the NT 1985 * console buffer, which means none of the precious scrollback 1986 * rows are touched making for faster scrolling. Note that, if 1987 * the window has fewer columns than the console buffer (i.e. 1988 * there is a horizontal scrollbar as well), the entire width 1989 * of the visible rows will be cleared. 1990 */ 1991 COORD topleft; 1992 DWORD nchars; 1993 DWORD winsz; 1994 CONSOLE_SCREEN_BUFFER_INFO csbi; 1995 1996 /* get the number of cells in the current buffer */ 1997 GetConsoleScreenBufferInfo(con_out, &csbi); 1998 winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1); 1999 topleft.X = 0; 2000 topleft.Y = csbi.srWindow.Top; 2001 2002 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2003 FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars); 2004 FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars); 2005 } 2006 2007 /* 2008 * Remove the n topmost lines and scroll everything below it in the 2009 * window upward. 2010 */ 2011 public void win32_scroll_up(int n) 2012 { 2013 SMALL_RECT rcSrc, rcClip; 2014 CHAR_INFO fillchar; 2015 COORD topleft; 2016 COORD new_org; 2017 DWORD nchars; 2018 DWORD size; 2019 CONSOLE_SCREEN_BUFFER_INFO csbi; 2020 2021 if (n <= 0) 2022 return; 2023 2024 if (n >= sc_height - 1) 2025 { 2026 win32_clear(); 2027 _settextposition(1,1); 2028 return; 2029 } 2030 2031 /* Get the extent of what will remain visible after scrolling. */ 2032 GetConsoleScreenBufferInfo(con_out, &csbi); 2033 rcSrc.Left = csbi.srWindow.Left; 2034 rcSrc.Top = csbi.srWindow.Top + n; 2035 rcSrc.Right = csbi.srWindow.Right; 2036 rcSrc.Bottom = csbi.srWindow.Bottom; 2037 2038 /* Get the clip rectangle. */ 2039 rcClip.Left = rcSrc.Left; 2040 rcClip.Top = csbi.srWindow.Top; 2041 rcClip.Right = rcSrc.Right; 2042 rcClip.Bottom = rcSrc.Bottom ; 2043 2044 /* Move the source text to the top of the screen. */ 2045 new_org.X = rcSrc.Left; 2046 new_org.Y = rcClip.Top; 2047 2048 /* Fill the right character and attributes. */ 2049 fillchar.Char.AsciiChar = ' '; 2050 fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color); 2051 2052 /* Scroll the window. */ 2053 SetConsoleTextAttribute(con_out, fillchar.Attributes); 2054 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 2055 2056 /* Clear remaining lines at bottom. */ 2057 topleft.X = csbi.dwCursorPosition.X; 2058 topleft.Y = rcSrc.Bottom - n; 2059 size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X); 2060 FillConsoleOutputCharacter(con_out, ' ', size, topleft, 2061 &nchars); 2062 FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft, 2063 &nchars); 2064 SetConsoleTextAttribute(con_out, curr_attr); 2065 2066 /* Move cursor n lines up from where it was. */ 2067 csbi.dwCursorPosition.Y -= n; 2068 SetConsoleCursorPosition(con_out, csbi.dwCursorPosition); 2069 } 2070 #endif 2071 2072 /* 2073 * Move cursor to lower left corner of screen. 2074 */ 2075 public void lower_left(void) 2076 { 2077 assert_interactive(); 2078 #if !MSDOS_COMPILER 2079 ltputs(sc_lower_left, 1, putchr); 2080 #else 2081 flush(); 2082 _settextposition(sc_height, 1); 2083 #endif 2084 } 2085 2086 /* 2087 * Move cursor to left position of current line. 2088 */ 2089 public void line_left(void) 2090 { 2091 assert_interactive(); 2092 #if !MSDOS_COMPILER 2093 ltputs(sc_return, 1, putchr); 2094 #else 2095 { 2096 int row; 2097 flush(); 2098 #if MSDOS_COMPILER==WIN32C 2099 { 2100 CONSOLE_SCREEN_BUFFER_INFO scr; 2101 GetConsoleScreenBufferInfo(con_out, &scr); 2102 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 2103 } 2104 #else 2105 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2106 row = wherey(); 2107 #else 2108 { 2109 struct rccoord tpos = _gettextposition(); 2110 row = tpos.row; 2111 } 2112 #endif 2113 #endif 2114 _settextposition(row, 1); 2115 } 2116 #endif 2117 } 2118 2119 /* 2120 * Check if the console size has changed and reset internals 2121 * (in lieu of SIGWINCH for WIN32). 2122 */ 2123 public void check_winch(void) 2124 { 2125 #if MSDOS_COMPILER==WIN32C 2126 CONSOLE_SCREEN_BUFFER_INFO scr; 2127 COORD size; 2128 2129 if (con_out == INVALID_HANDLE_VALUE) 2130 return; 2131 2132 flush(); 2133 GetConsoleScreenBufferInfo(con_out, &scr); 2134 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 2135 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 2136 if (size.Y != sc_height || size.X != sc_width) 2137 { 2138 sc_height = size.Y; 2139 sc_width = size.X; 2140 if (!no_init && con_out_ours == con_out) 2141 SetConsoleScreenBufferSize(con_out, size); 2142 pos_init(); 2143 wscroll = (sc_height + 1) / 2; 2144 screen_trashed = 1; 2145 } 2146 #endif 2147 } 2148 2149 /* 2150 * Goto a specific line on the screen. 2151 */ 2152 public void goto_line(int sindex) 2153 { 2154 assert_interactive(); 2155 #if !MSDOS_COMPILER 2156 ltputs(tgoto(sc_move, 0, sindex), 1, putchr); 2157 #else 2158 flush(); 2159 _settextposition(sindex+1, 1); 2160 #endif 2161 } 2162 2163 #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC 2164 /* 2165 * Create an alternate screen which is all white. 2166 * This screen is used to create a "flash" effect, by displaying it 2167 * briefly and then switching back to the normal screen. 2168 * {{ Yuck! There must be a better way to get a visual bell. }} 2169 */ 2170 static void create_flash(void) 2171 { 2172 #if MSDOS_COMPILER==MSOFTC 2173 struct videoconfig w; 2174 char *blanks; 2175 int row, col; 2176 2177 _getvideoconfig(&w); 2178 videopages = w.numvideopages; 2179 if (videopages < 2) 2180 { 2181 at_enter(AT_STANDOUT); 2182 at_exit(); 2183 } else 2184 { 2185 _setactivepage(1); 2186 at_enter(AT_STANDOUT); 2187 blanks = (char *) ecalloc(w.numtextcols, sizeof(char)); 2188 for (col = 0; col < w.numtextcols; col++) 2189 blanks[col] = ' '; 2190 for (row = w.numtextrows; row > 0; row--) 2191 _outmem(blanks, w.numtextcols); 2192 _setactivepage(0); 2193 _setvisualpage(0); 2194 free(blanks); 2195 at_exit(); 2196 } 2197 #else 2198 #if MSDOS_COMPILER==BORLANDC 2199 int n; 2200 2201 whitescreen = (unsigned short *) 2202 malloc(sc_width * sc_height * sizeof(short)); 2203 if (whitescreen == NULL) 2204 return; 2205 for (n = 0; n < sc_width * sc_height; n++) 2206 whitescreen[n] = 0x7020; 2207 #endif 2208 #endif 2209 flash_created = 1; 2210 } 2211 #endif /* MSDOS_COMPILER */ 2212 2213 /* 2214 * Output the "visual bell", if there is one. 2215 */ 2216 public void vbell(void) 2217 { 2218 if (no_vbell) 2219 return; 2220 #if !MSDOS_COMPILER 2221 if (*sc_visual_bell == '\0') 2222 return; 2223 ltputs(sc_visual_bell, sc_height, putchr); 2224 #else 2225 #if MSDOS_COMPILER==DJGPPC 2226 ScreenVisualBell(); 2227 #else 2228 #if MSDOS_COMPILER==MSOFTC 2229 /* 2230 * Create a flash screen on the second video page. 2231 * Switch to that page, then switch back. 2232 */ 2233 if (!flash_created) 2234 create_flash(); 2235 if (videopages < 2) 2236 return; 2237 _setvisualpage(1); 2238 delay(100); 2239 _setvisualpage(0); 2240 #else 2241 #if MSDOS_COMPILER==BORLANDC 2242 unsigned short *currscreen; 2243 2244 /* 2245 * Get a copy of the current screen. 2246 * Display the flash screen. 2247 * Then restore the old screen. 2248 */ 2249 if (!flash_created) 2250 create_flash(); 2251 if (whitescreen == NULL) 2252 return; 2253 currscreen = (unsigned short *) 2254 malloc(sc_width * sc_height * sizeof(short)); 2255 if (currscreen == NULL) return; 2256 gettext(1, 1, sc_width, sc_height, currscreen); 2257 puttext(1, 1, sc_width, sc_height, whitescreen); 2258 delay(100); 2259 puttext(1, 1, sc_width, sc_height, currscreen); 2260 free(currscreen); 2261 #else 2262 #if MSDOS_COMPILER==WIN32C 2263 /* paint screen with an inverse color */ 2264 clear(); 2265 2266 /* leave it displayed for 100 msec. */ 2267 Sleep(100); 2268 2269 /* restore with a redraw */ 2270 repaint(); 2271 #endif 2272 #endif 2273 #endif 2274 #endif 2275 #endif 2276 } 2277 2278 /* 2279 * Make a noise. 2280 */ 2281 static void beep(void) 2282 { 2283 #if !MSDOS_COMPILER 2284 putchr(CONTROL('G')); 2285 #else 2286 #if MSDOS_COMPILER==WIN32C 2287 MessageBeep(0); 2288 #else 2289 write(1, "\7", 1); 2290 #endif 2291 #endif 2292 } 2293 2294 /* 2295 * Ring the terminal bell. 2296 */ 2297 public void bell(void) 2298 { 2299 if (quiet == VERY_QUIET) 2300 vbell(); 2301 else 2302 beep(); 2303 } 2304 2305 /* 2306 * Clear the screen. 2307 */ 2308 public void clear(void) 2309 { 2310 assert_interactive(); 2311 #if !MSDOS_COMPILER 2312 ltputs(sc_clear, sc_height, putchr); 2313 #else 2314 flush(); 2315 #if MSDOS_COMPILER==WIN32C 2316 win32_clear(); 2317 #else 2318 _clearscreen(_GCLEARSCREEN); 2319 #endif 2320 #endif 2321 } 2322 2323 /* 2324 * Clear from the cursor to the end of the cursor's line. 2325 * {{ This must not move the cursor. }} 2326 */ 2327 public void clear_eol(void) 2328 { 2329 /* assert_interactive();*/ 2330 #if !MSDOS_COMPILER 2331 ltputs(sc_eol_clear, 1, putchr); 2332 #else 2333 #if MSDOS_COMPILER==MSOFTC 2334 short top, left; 2335 short bot, right; 2336 struct rccoord tpos; 2337 2338 flush(); 2339 /* 2340 * Save current state. 2341 */ 2342 tpos = _gettextposition(); 2343 _gettextwindow(&top, &left, &bot, &right); 2344 /* 2345 * Set a temporary window to the current line, 2346 * from the cursor's position to the right edge of the screen. 2347 * Then clear that window. 2348 */ 2349 _settextwindow(tpos.row, tpos.col, tpos.row, sc_width); 2350 _clearscreen(_GWINDOW); 2351 /* 2352 * Restore state. 2353 */ 2354 _settextwindow(top, left, bot, right); 2355 _settextposition(tpos.row, tpos.col); 2356 #else 2357 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2358 flush(); 2359 clreol(); 2360 #else 2361 #if MSDOS_COMPILER==WIN32C 2362 DWORD nchars; 2363 COORD cpos; 2364 CONSOLE_SCREEN_BUFFER_INFO scr; 2365 2366 flush(); 2367 memset(&scr, 0, sizeof(scr)); 2368 GetConsoleScreenBufferInfo(con_out, &scr); 2369 cpos.X = scr.dwCursorPosition.X; 2370 cpos.Y = scr.dwCursorPosition.Y; 2371 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2372 FillConsoleOutputAttribute(con_out, curr_attr, 2373 scr.dwSize.X - cpos.X, cpos, &nchars); 2374 FillConsoleOutputCharacter(con_out, ' ', 2375 scr.dwSize.X - cpos.X, cpos, &nchars); 2376 #endif 2377 #endif 2378 #endif 2379 #endif 2380 } 2381 2382 /* 2383 * Clear the current line. 2384 * Clear the screen if there's off-screen memory below the display. 2385 */ 2386 static void clear_eol_bot(void) 2387 { 2388 assert_interactive(); 2389 #if MSDOS_COMPILER 2390 clear_eol(); 2391 #else 2392 if (below_mem) 2393 ltputs(sc_eos_clear, 1, putchr); 2394 else 2395 ltputs(sc_eol_clear, 1, putchr); 2396 #endif 2397 } 2398 2399 /* 2400 * Clear the bottom line of the display. 2401 * Leave the cursor at the beginning of the bottom line. 2402 */ 2403 public void clear_bot(void) 2404 { 2405 /* 2406 * If we're in a non-normal attribute mode, temporarily exit 2407 * the mode while we do the clear. Some terminals fill the 2408 * cleared area with the current attribute. 2409 */ 2410 if (oldbot) 2411 lower_left(); 2412 else 2413 line_left(); 2414 2415 if (attrmode == AT_NORMAL) 2416 clear_eol_bot(); 2417 else 2418 { 2419 int saved_attrmode = attrmode; 2420 2421 at_exit(); 2422 clear_eol_bot(); 2423 at_enter(saved_attrmode); 2424 } 2425 } 2426 2427 /* 2428 * Color string may be "x[y]" where x and y are 4-bit color chars, 2429 * or "N[.M]" where N and M are decimal integers> 2430 * Any of x,y,N,M may also be "-" to mean "unchanged". 2431 */ 2432 2433 /* 2434 * Parse a 4-bit color char. 2435 */ 2436 static int parse_color4(char ch) 2437 { 2438 switch (ch) 2439 { 2440 case 'k': return 0; 2441 case 'r': return CV_RED; 2442 case 'g': return CV_GREEN; 2443 case 'y': return CV_RED|CV_GREEN; 2444 case 'b': return CV_BLUE; 2445 case 'm': return CV_RED|CV_BLUE; 2446 case 'c': return CV_GREEN|CV_BLUE; 2447 case 'w': return CV_RED|CV_GREEN|CV_BLUE; 2448 case 'K': return 0|CV_BRIGHT; 2449 case 'R': return CV_RED|CV_BRIGHT; 2450 case 'G': return CV_GREEN|CV_BRIGHT; 2451 case 'Y': return CV_RED|CV_GREEN|CV_BRIGHT; 2452 case 'B': return CV_BLUE|CV_BRIGHT; 2453 case 'M': return CV_RED|CV_BLUE|CV_BRIGHT; 2454 case 'C': return CV_GREEN|CV_BLUE|CV_BRIGHT; 2455 case 'W': return CV_RED|CV_GREEN|CV_BLUE|CV_BRIGHT; 2456 case '-': return CV_NOCHANGE; 2457 default: return CV_ERROR; 2458 } 2459 } 2460 2461 /* 2462 * Parse a color as a decimal integer. 2463 */ 2464 static int parse_color6(char **ps) 2465 { 2466 if (**ps == '-') 2467 { 2468 (*ps)++; 2469 return CV_NOCHANGE; 2470 } else 2471 { 2472 char *ops = *ps; 2473 int color = lstrtoi(ops, ps, 10); 2474 if (color < 0 || *ps == ops) 2475 return CV_ERROR; 2476 return color; 2477 } 2478 } 2479 2480 /* 2481 * Parse a color pair and return the foreground/background values. 2482 * Return type of color specifier: 2483 * CV_4BIT: fg/bg values are OR of CV_{RGB} bits. 2484 * CV_6BIT: fg/bg values are integers entered by user. 2485 */ 2486 public COLOR_TYPE parse_color(char *str, int *p_fg, int *p_bg) 2487 { 2488 int fg; 2489 int bg; 2490 COLOR_TYPE type = CT_NULL; 2491 2492 if (str == NULL || *str == '\0') 2493 return CT_NULL; 2494 if (*str == '+') 2495 str++; /* ignore leading + */ 2496 2497 fg = parse_color4(str[0]); 2498 bg = parse_color4((strlen(str) < 2) ? '-' : str[1]); 2499 if (fg != CV_ERROR && bg != CV_ERROR) 2500 type = CT_4BIT; 2501 else 2502 { 2503 fg = parse_color6(&str); 2504 bg = (fg != CV_ERROR && *str++ == '.') ? parse_color6(&str) : CV_NOCHANGE; 2505 if (fg != CV_ERROR && bg != CV_ERROR) 2506 type = CT_6BIT; 2507 } 2508 if (p_fg != NULL) *p_fg = fg; 2509 if (p_bg != NULL) *p_bg = bg; 2510 return type; 2511 } 2512 2513 #if !MSDOS_COMPILER 2514 2515 static int sgr_color(int color) 2516 { 2517 switch (color) 2518 { 2519 case 0: return 30; 2520 case CV_RED: return 31; 2521 case CV_GREEN: return 32; 2522 case CV_RED|CV_GREEN: return 33; 2523 case CV_BLUE: return 34; 2524 case CV_RED|CV_BLUE: return 35; 2525 case CV_GREEN|CV_BLUE: return 36; 2526 case CV_RED|CV_GREEN|CV_BLUE: return 37; 2527 2528 case CV_BRIGHT: return 90; 2529 case CV_RED|CV_BRIGHT: return 91; 2530 case CV_GREEN|CV_BRIGHT: return 92; 2531 case CV_RED|CV_GREEN|CV_BRIGHT: return 93; 2532 case CV_BLUE|CV_BRIGHT: return 94; 2533 case CV_RED|CV_BLUE|CV_BRIGHT: return 95; 2534 case CV_GREEN|CV_BLUE|CV_BRIGHT: return 96; 2535 case CV_RED|CV_GREEN|CV_BLUE|CV_BRIGHT: return 97; 2536 2537 default: return color; 2538 } 2539 } 2540 2541 static void tput_fmt(char *fmt, int color, int (*f_putc)(int)) 2542 { 2543 char buf[INT_STRLEN_BOUND(int)+16]; 2544 if (color == attrcolor) 2545 return; 2546 SNPRINTF1(buf, sizeof(buf), fmt, color); 2547 ltputs(buf, 1, f_putc); 2548 attrcolor = color; 2549 } 2550 2551 static void tput_color(char *str, int (*f_putc)(int)) 2552 { 2553 int fg; 2554 int bg; 2555 2556 if (str != NULL && strcmp(str, "*") == 0) 2557 { 2558 /* Special case: reset to normal */ 2559 tput_fmt(ESCS"[m", -1, f_putc); 2560 return; 2561 } 2562 switch (parse_color(str, &fg, &bg)) 2563 { 2564 case CT_4BIT: 2565 if (fg >= 0) 2566 tput_fmt(ESCS"[%dm", sgr_color(fg), f_putc); 2567 if (bg >= 0) 2568 tput_fmt(ESCS"[%dm", sgr_color(bg)+10, f_putc); 2569 break; 2570 case CT_6BIT: 2571 if (fg >= 0) 2572 tput_fmt(ESCS"[38;5;%dm", fg, f_putc); 2573 if (bg >= 0) 2574 tput_fmt(ESCS"[48;5;%dm", bg, f_putc); 2575 break; 2576 default: 2577 break; 2578 } 2579 } 2580 2581 static void tput_inmode(char *mode_str, int attr, int attr_bit, int (*f_putc)(int)) 2582 { 2583 char *color_str; 2584 if ((attr & attr_bit) == 0) 2585 return; 2586 color_str = get_color_map(attr_bit); 2587 if (color_str == NULL || *color_str == '\0' || *color_str == '+') 2588 { 2589 ltputs(mode_str, 1, f_putc); 2590 if (color_str == NULL || *color_str++ != '+') 2591 return; 2592 } 2593 /* Color overrides mode string */ 2594 tput_color(color_str, f_putc); 2595 } 2596 2597 static void tput_outmode(char *mode_str, int attr_bit, int (*f_putc)(int)) 2598 { 2599 if ((attrmode & attr_bit) == 0) 2600 return; 2601 ltputs(mode_str, 1, f_putc); 2602 } 2603 2604 #else /* MSDOS_COMPILER */ 2605 2606 #if MSDOS_COMPILER==WIN32C 2607 static int WIN32put_fmt(char *fmt, int color) 2608 { 2609 char buf[INT_STRLEN_BOUND(int)+16]; 2610 int len = SNPRINTF1(buf, sizeof(buf), fmt, color); 2611 WIN32textout(buf, len); 2612 return TRUE; 2613 } 2614 #endif 2615 2616 static int win_set_color(int attr) 2617 { 2618 int fg; 2619 int bg; 2620 int out = FALSE; 2621 char *str = get_color_map(attr); 2622 if (str == NULL || str[0] == '\0') 2623 return FALSE; 2624 switch (parse_color(str, &fg, &bg)) 2625 { 2626 case CT_4BIT: 2627 if (fg >= 0 && bg >= 0) 2628 { 2629 SETCOLORS(fg, bg); 2630 out = TRUE; 2631 } else if (fg >= 0) 2632 { 2633 SET_FG_COLOR(fg); 2634 out = TRUE; 2635 } else if (bg >= 0) 2636 { 2637 SET_BG_COLOR(bg); 2638 out = TRUE; 2639 } 2640 break; 2641 #if MSDOS_COMPILER==WIN32C 2642 case CT_6BIT: 2643 if (vt_enabled) 2644 { 2645 if (fg > 0) 2646 out = WIN32put_fmt(ESCS"[38;5;%dm", fg); 2647 if (bg > 0) 2648 out = WIN32put_fmt(ESCS"[48;5;%dm", bg); 2649 } 2650 break; 2651 #endif 2652 default: 2653 break; 2654 } 2655 return out; 2656 } 2657 2658 #endif /* MSDOS_COMPILER */ 2659 2660 public void at_enter(int attr) 2661 { 2662 attr = apply_at_specials(attr); 2663 #if !MSDOS_COMPILER 2664 /* The one with the most priority is last. */ 2665 tput_inmode(sc_u_in, attr, AT_UNDERLINE, putchr); 2666 tput_inmode(sc_b_in, attr, AT_BOLD, putchr); 2667 tput_inmode(sc_bl_in, attr, AT_BLINK, putchr); 2668 /* Don't use standout and color at the same time. */ 2669 if (use_color && (attr & AT_COLOR)) 2670 tput_color(get_color_map(attr), putchr); 2671 else 2672 tput_inmode(sc_s_in, attr, AT_STANDOUT, putchr); 2673 #else 2674 flush(); 2675 /* The one with the most priority is first. */ 2676 if ((attr & AT_COLOR) && use_color) 2677 { 2678 win_set_color(attr); 2679 } else if (attr & AT_STANDOUT) 2680 { 2681 SETCOLORS(so_fg_color, so_bg_color); 2682 } else if (attr & AT_BLINK) 2683 { 2684 SETCOLORS(bl_fg_color, bl_bg_color); 2685 } else if (attr & AT_BOLD) 2686 { 2687 SETCOLORS(bo_fg_color, bo_bg_color); 2688 } else if (attr & AT_UNDERLINE) 2689 { 2690 SETCOLORS(ul_fg_color, ul_bg_color); 2691 } 2692 #endif 2693 attrmode = attr; 2694 } 2695 2696 public void at_exit(void) 2697 { 2698 #if !MSDOS_COMPILER 2699 /* Undo things in the reverse order we did them. */ 2700 tput_color("*", putchr); 2701 tput_outmode(sc_s_out, AT_STANDOUT, putchr); 2702 tput_outmode(sc_bl_out, AT_BLINK, putchr); 2703 tput_outmode(sc_b_out, AT_BOLD, putchr); 2704 tput_outmode(sc_u_out, AT_UNDERLINE, putchr); 2705 #else 2706 flush(); 2707 SETCOLORS(nm_fg_color, nm_bg_color); 2708 #endif 2709 attrmode = AT_NORMAL; 2710 } 2711 2712 public void at_switch(int attr) 2713 { 2714 int new_attrmode = apply_at_specials(attr); 2715 int ignore_modes = AT_ANSI; 2716 2717 if ((new_attrmode & ~ignore_modes) != (attrmode & ~ignore_modes)) 2718 { 2719 at_exit(); 2720 at_enter(attr); 2721 } 2722 } 2723 2724 public int is_at_equiv(int attr1, int attr2) 2725 { 2726 attr1 = apply_at_specials(attr1); 2727 attr2 = apply_at_specials(attr2); 2728 2729 return (attr1 == attr2); 2730 } 2731 2732 public int apply_at_specials(int attr) 2733 { 2734 if (attr & AT_BINARY) 2735 attr |= binattr; 2736 if (attr & AT_HILITE) 2737 attr |= AT_STANDOUT; 2738 attr &= ~(AT_BINARY|AT_HILITE); 2739 2740 return attr; 2741 } 2742 2743 /* 2744 * Output a plain backspace, without erasing the previous char. 2745 */ 2746 public void putbs(void) 2747 { 2748 if (termcap_debug) 2749 putstr("<bs>"); 2750 else 2751 { 2752 #if !MSDOS_COMPILER 2753 ltputs(sc_backspace, 1, putchr); 2754 #else 2755 int row, col; 2756 2757 flush(); 2758 { 2759 #if MSDOS_COMPILER==MSOFTC 2760 struct rccoord tpos; 2761 tpos = _gettextposition(); 2762 row = tpos.row; 2763 col = tpos.col; 2764 #else 2765 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2766 row = wherey(); 2767 col = wherex(); 2768 #else 2769 #if MSDOS_COMPILER==WIN32C 2770 CONSOLE_SCREEN_BUFFER_INFO scr; 2771 GetConsoleScreenBufferInfo(con_out, &scr); 2772 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 2773 col = scr.dwCursorPosition.X - scr.srWindow.Left + 1; 2774 #endif 2775 #endif 2776 #endif 2777 } 2778 if (col <= 1) 2779 return; 2780 _settextposition(row, col-1); 2781 #endif /* MSDOS_COMPILER */ 2782 } 2783 } 2784 2785 #if MSDOS_COMPILER==WIN32C 2786 /* 2787 * Determine whether an input character is waiting to be read. 2788 */ 2789 public int win32_kbhit(void) 2790 { 2791 INPUT_RECORD ip; 2792 DWORD read; 2793 2794 if (keyCount > 0) 2795 return (TRUE); 2796 2797 currentKey.ascii = 0; 2798 currentKey.scan = 0; 2799 2800 if (x11mouseCount > 0) 2801 { 2802 currentKey.ascii = x11mousebuf[x11mousePos++]; 2803 --x11mouseCount; 2804 keyCount = 1; 2805 return (TRUE); 2806 } 2807 2808 /* 2809 * Wait for a real key-down event, but 2810 * ignore SHIFT and CONTROL key events. 2811 */ 2812 do 2813 { 2814 PeekConsoleInputW(tty, &ip, 1, &read); 2815 if (read == 0) 2816 return (FALSE); 2817 ReadConsoleInputW(tty, &ip, 1, &read); 2818 /* generate an X11 mouse sequence from the mouse event */ 2819 if (mousecap && ip.EventType == MOUSE_EVENT && 2820 ip.Event.MouseEvent.dwEventFlags != MOUSE_MOVED) 2821 { 2822 x11mousebuf[3] = X11MOUSE_OFFSET + ip.Event.MouseEvent.dwMousePosition.X + 1; 2823 x11mousebuf[4] = X11MOUSE_OFFSET + ip.Event.MouseEvent.dwMousePosition.Y + 1; 2824 switch (ip.Event.MouseEvent.dwEventFlags) 2825 { 2826 case 0: /* press or release */ 2827 if (ip.Event.MouseEvent.dwButtonState == 0) 2828 x11mousebuf[2] = X11MOUSE_OFFSET + X11MOUSE_BUTTON_REL; 2829 else if (ip.Event.MouseEvent.dwButtonState & (FROM_LEFT_3RD_BUTTON_PRESSED | FROM_LEFT_4TH_BUTTON_PRESSED)) 2830 continue; 2831 else 2832 x11mousebuf[2] = X11MOUSE_OFFSET + X11MOUSE_BUTTON1 + ((int)ip.Event.MouseEvent.dwButtonState << 1); 2833 break; 2834 case MOUSE_WHEELED: 2835 x11mousebuf[2] = X11MOUSE_OFFSET + (((int)ip.Event.MouseEvent.dwButtonState < 0) ? X11MOUSE_WHEEL_DOWN : X11MOUSE_WHEEL_UP); 2836 break; 2837 default: 2838 continue; 2839 } 2840 x11mousePos = 0; 2841 x11mouseCount = 5; 2842 currentKey.ascii = ESC; 2843 keyCount = 1; 2844 return (TRUE); 2845 } 2846 } while (ip.EventType != KEY_EVENT || 2847 ip.Event.KeyEvent.bKeyDown != TRUE || 2848 (ip.Event.KeyEvent.wVirtualScanCode == 0 && ip.Event.KeyEvent.uChar.UnicodeChar == 0) || 2849 ((ip.Event.KeyEvent.dwControlKeyState & (RIGHT_ALT_PRESSED|LEFT_CTRL_PRESSED)) == (RIGHT_ALT_PRESSED|LEFT_CTRL_PRESSED) && ip.Event.KeyEvent.uChar.UnicodeChar == 0) || 2850 ip.Event.KeyEvent.wVirtualKeyCode == VK_KANJI || 2851 ip.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT || 2852 ip.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL || 2853 ip.Event.KeyEvent.wVirtualKeyCode == VK_MENU); 2854 2855 currentKey.unicode = ip.Event.KeyEvent.uChar.UnicodeChar; 2856 currentKey.ascii = ip.Event.KeyEvent.uChar.AsciiChar; 2857 currentKey.scan = ip.Event.KeyEvent.wVirtualScanCode; 2858 keyCount = ip.Event.KeyEvent.wRepeatCount; 2859 2860 if (ip.Event.KeyEvent.dwControlKeyState & 2861 (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED)) 2862 { 2863 switch (currentKey.scan) 2864 { 2865 case PCK_ALT_E: /* letter 'E' */ 2866 currentKey.ascii = 0; 2867 break; 2868 } 2869 } else if (ip.Event.KeyEvent.dwControlKeyState & 2870 (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) 2871 { 2872 switch (currentKey.scan) 2873 { 2874 case PCK_RIGHT: /* right arrow */ 2875 currentKey.scan = PCK_CTL_RIGHT; 2876 break; 2877 case PCK_LEFT: /* left arrow */ 2878 currentKey.scan = PCK_CTL_LEFT; 2879 break; 2880 case PCK_DELETE: /* delete */ 2881 currentKey.scan = PCK_CTL_DELETE; 2882 break; 2883 } 2884 } else if (ip.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED) 2885 { 2886 switch (currentKey.scan) 2887 { 2888 case PCK_SHIFT_TAB: /* tab */ 2889 currentKey.ascii = 0; 2890 break; 2891 } 2892 } 2893 2894 return (TRUE); 2895 } 2896 2897 /* 2898 * Read a character from the keyboard. 2899 */ 2900 public char WIN32getch(void) 2901 { 2902 char ascii; 2903 static unsigned char utf8[UTF8_MAX_LENGTH]; 2904 static int utf8_size = 0; 2905 static int utf8_next_byte = 0; 2906 2907 // Return the rest of multibyte character from the prior call 2908 if (utf8_next_byte < utf8_size) 2909 { 2910 ascii = utf8[utf8_next_byte++]; 2911 return ascii; 2912 } 2913 utf8_size = 0; 2914 2915 if (pending_scancode) 2916 { 2917 pending_scancode = 0; 2918 return ((char)(currentKey.scan & 0x00FF)); 2919 } 2920 2921 do { 2922 while (win32_kbhit() == FALSE) 2923 { 2924 Sleep(20); 2925 if (ABORT_SIGS()) 2926 return ('\003'); 2927 continue; 2928 } 2929 keyCount --; 2930 // If multibyte character, return its first byte 2931 if (currentKey.ascii != currentKey.unicode) 2932 { 2933 utf8_size = WideCharToMultiByte(CP_UTF8, 0, ¤tKey.unicode, 1, &utf8, sizeof(utf8), NULL, NULL); 2934 if (utf8_size == 0 ) 2935 return '\0'; 2936 ascii = utf8[0]; 2937 utf8_next_byte = 1; 2938 } else 2939 ascii = currentKey.ascii; 2940 /* 2941 * On PC's, the extended keys return a 2 byte sequence beginning 2942 * with '00', so if the ascii code is 00, the next byte will be 2943 * the lsb of the scan code. 2944 */ 2945 pending_scancode = (ascii == 0x00); 2946 } while (pending_scancode && 2947 (currentKey.scan == PCK_CAPS_LOCK || currentKey.scan == PCK_NUM_LOCK)); 2948 2949 return ascii; 2950 } 2951 #endif 2952 2953 #if MSDOS_COMPILER 2954 /* 2955 */ 2956 public void WIN32setcolors(int fg, int bg) 2957 { 2958 SETCOLORS(fg, bg); 2959 } 2960 2961 /* 2962 */ 2963 public void WIN32textout(char *text, int len) 2964 { 2965 #if MSDOS_COMPILER==WIN32C 2966 DWORD written; 2967 if (utf_mode == 2) 2968 { 2969 /* 2970 * We've got UTF-8 text in a non-UTF-8 console. Convert it to 2971 * wide and use WriteConsoleW. 2972 */ 2973 WCHAR wtext[1024]; 2974 len = MultiByteToWideChar(CP_UTF8, 0, text, len, wtext, 2975 sizeof(wtext)/sizeof(*wtext)); 2976 WriteConsoleW(con_out, wtext, len, &written, NULL); 2977 } else 2978 WriteConsole(con_out, text, len, &written, NULL); 2979 #else 2980 char c = text[len]; 2981 text[len] = '\0'; 2982 cputs(text); 2983 text[len] = c; 2984 #endif 2985 } 2986 #endif 2987 2988