1 /* 2 * Copyright (C) 1984-2026 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_TERMINFO && !USE_TERMCAP 72 #define USE_TERMINFO 1 73 #endif 74 75 #if USE_TERMINFO 76 #include <curses.h> 77 #include <term.h> 78 #if HAVE_TPARM2 79 #define LTPARM2(s,p1,p2) tparm(s, p1, p2) 80 #else 81 #if HAVE_TPARM8 82 #define LTPARM2(s,p1,p2) tparm(s, p1, p2, 0, 0, 0, 0, 0, 0) 83 #else 84 #if HAVE_TPARM9 85 #define LTPARM2(s,p1,p2) tparm(s, p1, p2, 0, 0, 0, 0, 0, 0, 0) 86 #else 87 #endif 88 #endif 89 #endif 90 #else 91 #if HAVE_NCURSESW_TERMCAP_H 92 #include <ncursesw/termcap.h> 93 #else 94 #if HAVE_NCURSES_TERMCAP_H 95 #include <ncurses/termcap.h> 96 #else 97 #if HAVE_TERMCAP_H 98 #include <termcap.h> 99 #endif 100 #endif 101 #endif 102 #endif 103 #ifdef _OSK 104 #include <signal.h> 105 #endif 106 #if OS2 107 #include <sys/signal.h> 108 #include "pckeys.h" 109 #endif 110 #if HAVE_SYS_STREAM_H 111 #include <sys/stream.h> 112 #endif 113 #if HAVE_SYS_PTEM_H 114 #include <sys/ptem.h> 115 #endif 116 117 #endif /* MSDOS_COMPILER */ 118 119 /* 120 * Check for broken termios package that forces you to manually 121 * set the line discipline. 122 */ 123 #ifdef __ultrix__ 124 #define MUST_SET_LINE_DISCIPLINE 1 125 #else 126 #define MUST_SET_LINE_DISCIPLINE 0 127 #endif 128 129 #if OS2 130 #define DEFAULT_TERM "ansi" 131 static char *windowid; 132 #else 133 #define DEFAULT_TERM "unknown" 134 #endif 135 136 #if MSDOS_COMPILER==MSOFTC 137 static int videopages; 138 static long msec_loops; 139 static int flash_created = 0; 140 #define SET_FG_COLOR(fg) _settextcolor(fg) 141 #define SET_BG_COLOR(bg) _setbkcolor(bg) 142 #define SETCOLORS(fg,bg) { SET_FG_COLOR(fg); SET_BG_COLOR(bg); } 143 #endif 144 145 #if MSDOS_COMPILER==BORLANDC 146 static unsigned short *whitescreen; 147 static int flash_created = 0; 148 #endif 149 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 150 #define _settextposition(y,x) gotoxy(x,y) 151 #define _clearscreen(m) clrscr() 152 #define _outtext(s) cputs(s) 153 #define SET_FG_COLOR(fg) textcolor(fg) 154 #define SET_BG_COLOR(bg) textbackground(bg) 155 #define SETCOLORS(fg,bg) { SET_FG_COLOR(fg); SET_BG_COLOR(bg); } 156 extern int sc_height; 157 #endif 158 159 #if MSDOS_COMPILER==WIN32C 160 #define UTF8_MAX_LENGTH 4 161 162 static WORD curr_attr; 163 164 static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */ 165 static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */ 166 HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */ 167 168 extern int utf_mode; 169 extern lbool quitting; 170 static void win32_init_term(); 171 static void win32_deinit_term(); 172 173 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING 174 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4 175 #endif 176 177 #define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY) 178 #define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY) 179 #define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4))) 180 #define APPLY_COLORS() { if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \ 181 error("SETCOLORS failed", NULL_PARG); } 182 #define SET_FG_COLOR(fg) { curr_attr &= ~0x0f; curr_attr |= (fg); APPLY_COLORS(); } 183 #define SET_BG_COLOR(bg) { curr_attr &= ~0xf0; curr_attr |= ((bg)<<4); APPLY_COLORS(); } 184 #define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); APPLY_COLORS(); } 185 #endif 186 187 #if MSDOS_COMPILER 188 public int nm_fg_color = CV_ERROR; /* Color of normal text */ 189 public int nm_bg_color = CV_ERROR; 190 public int nm_attr = 0; 191 public int bo_fg_color = CV_ERROR; /* Color of bold text */ 192 public int bo_bg_color = CV_ERROR; 193 public int bo_attr = 0; 194 public int ul_fg_color = CV_ERROR; /* Color of underlined text */ 195 public int ul_bg_color = CV_ERROR; 196 public int ul_attr = 0; 197 public int so_fg_color = CV_ERROR; /* Color of standout text */ 198 public int so_bg_color = CV_ERROR; 199 public int so_attr = 0; 200 public int bl_fg_color = CV_ERROR; /* Color of blinking text */ 201 public int bl_bg_color = CV_ERROR; 202 public int bl_attr = 0; 203 static int sy_fg_color; /* Color of system text (before less) */ 204 static int sy_bg_color; 205 public int sgr_mode; /* Honor ANSI sequences rather than using above */ 206 #if MSDOS_COMPILER==WIN32C 207 static DWORD init_console_output_mode; 208 extern DWORD init_console_input_mode; 209 extern DWORD curr_console_input_mode; 210 extern DWORD base_console_input_mode; 211 extern DWORD mouse_console_input_mode; 212 public int vt_enabled = -1; /* Is virtual terminal processing available? */ 213 #endif 214 #else 215 216 /* 217 * These two variables are sometimes defined in, 218 * and needed by, the termcap library. 219 */ 220 #if USE_TERMINFO 221 #undef HAVE_OSPEED 222 #else 223 #if MUST_DEFINE_OSPEED 224 extern short ospeed; /* Terminal output baud rate */ 225 extern char PC; /* Pad character */ 226 #endif 227 #ifdef _OSK 228 short ospeed; 229 char PC_, *UP, *BC; 230 #endif 231 #endif 232 233 /* 234 * Strings passed to tputs() to do various terminal functions. 235 */ 236 static constant char 237 #if HAVE_OSPEED 238 *sc_pad, /* Pad string */ 239 #endif 240 *sc_home, /* Cursor home */ 241 *sc_addline, /* Add line, scroll down following lines */ 242 *sc_lower_left, /* Cursor to last line, first column */ 243 *sc_return, /* Cursor to beginning of current line */ 244 *sc_move, /* General cursor positioning */ 245 *sc_clear, /* Clear screen */ 246 *sc_eol_clear, /* Clear to end of line */ 247 *sc_eos_clear, /* Clear to end of screen */ 248 *sc_s_in, /* Enter standout (highlighted) mode */ 249 *sc_s_out, /* Exit standout mode */ 250 *sc_u_in, /* Enter underline mode */ 251 *sc_u_out, /* Exit underline mode */ 252 *sc_b_in, /* Enter bold mode */ 253 *sc_b_out, /* Exit bold mode */ 254 *sc_bl_in, /* Enter blink mode */ 255 *sc_bl_out, /* Exit blink mode */ 256 *sc_visual_bell, /* Visual bell (flash screen) sequence */ 257 *sc_backspace, /* Backspace cursor */ 258 *sc_s_keypad, /* Start keypad mode */ 259 *sc_e_keypad, /* End keypad mode */ 260 *sc_s_mousecap, /* Start mouse capture mode */ 261 *sc_e_mousecap, /* End mouse capture mode */ 262 *sc_s_bracketed_paste, /* Start bracketed paste mode */ 263 *sc_e_bracketed_paste, /* End bracketed paste mode */ 264 *sc_suspend, /* Suspend screen updates */ 265 *sc_resume, /* Resume screen updates */ 266 *sc_init, /* Startup terminal initialization */ 267 *sc_deinit; /* Exit terminal de-initialization */ 268 269 /* attrbits is the current attribute mode of the terminal 270 * (AT_UNDERLINE, AT_BOLD, AT_STANDOUT, AT_BLINK). 271 * attrmode is the user-defined mode, which may include AT_COLOR values, 272 * and the mapping of the AT_COLOR value may include the 4 attribute bits. */ 273 static int attrbits = 0; 274 static int attrcolor = -1; 275 #endif 276 277 /* term_init has been called; terminal is ready for use by less */ 278 static lbool term_init_done = FALSE; 279 public lbool term_init_ever = FALSE; 280 281 public int auto_wrap; /* Terminal does \r\n when write past margin */ 282 public int defer_wrap; /* After printing char in last column, doesn't wrap until next char */ 283 public int erase_char; /* The user's erase char */ 284 public int erase2_char; /* The user's other erase char */ 285 public int kill_char; /* The user's line-kill char */ 286 public int werase_char; /* The user's word-erase char */ 287 public int sc_width, sc_height; /* Height & width of screen */ 288 public int bo_s_width, bo_e_width; /* Printing width of boldface seq */ 289 public int ul_s_width, ul_e_width; /* Printing width of underline seq */ 290 public int so_s_width, so_e_width; /* Printing width of standout seq */ 291 public int bl_s_width, bl_e_width; /* Printing width of blink seq */ 292 public int above_mem, below_mem; /* Memory retained above/below screen */ 293 public int can_goto_line; /* Can move cursor to any line */ 294 public int clear_bg; /* Clear fills with background color */ 295 public lbool missing_cap = FALSE; /* Some capability is missing */ 296 public constant char *kent = NULL; /* Keypad ENTER sequence */ 297 public lbool kent_mapped = FALSE; /* Keypad ENTER is mapped to a command */ 298 public lbool term_addrs = FALSE; /* "ti" has been sent to terminal */ 299 public lbool full_screen = TRUE; /* We're using all lines of terminal */ 300 301 static int attrmode = AT_NORMAL; /* current attributes (AT_* bits) */ 302 static int termcap_debug = -1; 303 static int no_alt_screen; /* sc_init does not switch to alt screen */ 304 extern int binattr; 305 extern lbool one_screen; 306 extern int shell_lines; 307 308 #if !MSDOS_COMPILER 309 static constant char *cheaper(constant char *t1, constant char *t2, constant char *def); 310 static void tmodes(constant char *inti, constant char *outti, constant char *intc, constant char *outtc, constant char **instr, 311 constant char **outstr, constant char *def_instr, constant char *def_outstr, char **spp); 312 #endif 313 314 extern int quiet; /* If VERY_QUIET, use visual bell for bell */ 315 extern int no_vbell; 316 extern lbool no_back_scroll; 317 extern int no_init; 318 extern int no_keypad; 319 extern int sigs; 320 extern int top_scroll; 321 extern int quit_if_one_screen; 322 extern int oldbot; 323 extern int emouse; 324 extern lbool is_tty; 325 extern int use_color; 326 extern int no_paste; 327 extern int wscroll; 328 #if HILITE_SEARCH 329 extern int hilite_search; 330 #endif 331 #if MSDOS_COMPILER==WIN32C 332 extern HANDLE tty; 333 #else 334 extern int tty; 335 #endif 336 337 #if (HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS) || defined(TCGETA) 338 /* 339 * Set termio flags for use by less. 340 */ 341 static void set_termio_flags( 342 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 343 struct termios *s 344 #else 345 struct termio *s 346 #endif 347 ) 348 { 349 s->c_lflag &= ~(0 350 #ifdef ICANON 351 | ICANON 352 #endif 353 #ifdef ECHO 354 | ECHO 355 #endif 356 #ifdef ECHOE 357 | ECHOE 358 #endif 359 #ifdef ECHOK 360 | ECHOK 361 #endif 362 #ifdef ECHONL 363 | ECHONL 364 #endif 365 ); 366 367 s->c_oflag |= (0 368 #ifdef OPOST 369 | OPOST 370 #endif 371 #ifdef ONLCR 372 | ONLCR 373 #endif 374 ); 375 376 s->c_oflag &= ~(0 377 #ifdef ONOEOT 378 | ONOEOT 379 #endif 380 #ifdef OCRNL 381 | OCRNL 382 #endif 383 #ifdef ONOCR 384 | ONOCR 385 #endif 386 #ifdef ONLRET 387 | ONLRET 388 #endif 389 ); 390 391 s->c_iflag &= ~(0 392 #ifdef ICRNL 393 | ICRNL 394 #endif 395 #ifdef INLCR 396 | INLCR 397 #endif 398 ); 399 } 400 #endif 401 402 /* 403 * Change terminal to "raw mode", or restore to "normal" mode. 404 * "Raw mode" means 405 * 1. An outstanding read will complete on receipt of a single keystroke. 406 * 2. Input is not echoed. 407 * 3. On output, \n is mapped to \r\n. 408 * 4. \t is NOT expanded into spaces. 409 * 5. Signal-causing characters such as ctrl-C (interrupt), 410 * etc. are NOT disabled. 411 * 6. Input \r is not mapped to \n, nor vice versa. 412 */ 413 public void raw_mode(int on) 414 { 415 static int curr_on = 0; 416 417 if (on == curr_on) 418 return; 419 erase2_char = '\b'; /* in case OS doesn't know about erase2 */ 420 #if LESSTEST 421 if (is_lesstest()) 422 { 423 /* {{ For consistent conditions when running tests. }} */ 424 erase_char = '\b'; 425 kill_char = CONTROL('U'); 426 werase_char = CONTROL('W'); 427 } else 428 #endif /*LESSTEST*/ 429 #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS 430 { 431 struct termios s; 432 static struct termios save_term; 433 static int saved_term = 0; 434 435 if (on) 436 { 437 /* 438 * Get terminal modes. 439 */ 440 if (tcgetattr(tty, &s) < 0) 441 { 442 erase_char = '\b'; 443 kill_char = CONTROL('U'); 444 werase_char = CONTROL('W'); 445 } else 446 { 447 /* 448 * Save modes and set certain variables dependent on modes. 449 */ 450 if (!saved_term) 451 { 452 save_term = s; 453 saved_term = 1; 454 } 455 #if HAVE_OSPEED 456 switch (cfgetospeed(&s)) 457 { 458 #ifdef B0 459 case B0: ospeed = 0; break; 460 #endif 461 #ifdef B50 462 case B50: ospeed = 1; break; 463 #endif 464 #ifdef B75 465 case B75: ospeed = 2; break; 466 #endif 467 #ifdef B110 468 case B110: ospeed = 3; break; 469 #endif 470 #ifdef B134 471 case B134: ospeed = 4; break; 472 #endif 473 #ifdef B150 474 case B150: ospeed = 5; break; 475 #endif 476 #ifdef B200 477 case B200: ospeed = 6; break; 478 #endif 479 #ifdef B300 480 case B300: ospeed = 7; break; 481 #endif 482 #ifdef B600 483 case B600: ospeed = 8; break; 484 #endif 485 #ifdef B1200 486 case B1200: ospeed = 9; break; 487 #endif 488 #ifdef B1800 489 case B1800: ospeed = 10; break; 490 #endif 491 #ifdef B2400 492 case B2400: ospeed = 11; break; 493 #endif 494 #ifdef B4800 495 case B4800: ospeed = 12; break; 496 #endif 497 #ifdef B9600 498 case B9600: ospeed = 13; break; 499 #endif 500 #ifdef EXTA 501 case EXTA: ospeed = 14; break; 502 #endif 503 #ifdef EXTB 504 case EXTB: ospeed = 15; break; 505 #endif 506 #ifdef B57600 507 case B57600: ospeed = 16; break; 508 #endif 509 #ifdef B115200 510 case B115200: ospeed = 17; break; 511 #endif 512 default: ; 513 } 514 #endif 515 erase_char = s.c_cc[VERASE]; 516 #ifdef VERASE2 517 erase2_char = s.c_cc[VERASE2]; 518 #endif 519 kill_char = s.c_cc[VKILL]; 520 #ifdef VWERASE 521 werase_char = s.c_cc[VWERASE]; 522 #else 523 werase_char = CONTROL('W'); 524 #endif 525 526 /* 527 * Set the modes to the way we want them. 528 */ 529 set_termio_flags(&s); 530 s.c_cc[VMIN] = 1; 531 s.c_cc[VTIME] = 0; 532 #ifdef VLNEXT 533 s.c_cc[VLNEXT] = 0; 534 #endif 535 #ifdef VDSUSP 536 s.c_cc[VDSUSP] = 0; 537 #endif 538 #ifdef VSTOP 539 s.c_cc[VSTOP] = 0; 540 #endif 541 #ifdef VSTART 542 s.c_cc[VSTART] = 0; 543 #endif 544 #ifdef VDISCARD 545 s.c_cc[VDISCARD] = 0; 546 #endif 547 #if MUST_SET_LINE_DISCIPLINE 548 /* 549 * System's termios is broken; need to explicitly 550 * request TERMIODISC line discipline. 551 */ 552 s.c_line = TERMIODISC; 553 #endif 554 } 555 } else 556 { 557 /* 558 * Restore saved modes. 559 */ 560 s = save_term; 561 } 562 #if HAVE_FSYNC 563 fsync(tty); 564 #endif 565 tcsetattr(tty, TCSADRAIN, &s); 566 #if MUST_SET_LINE_DISCIPLINE 567 if (!on) 568 { 569 /* 570 * Broken termios *ignores* any line discipline 571 * except TERMIODISC. A different old line discipline 572 * is therefore not restored, yet. Restore the old 573 * line discipline by hand. 574 */ 575 ioctl(tty, TIOCSETD, &save_term.c_line); 576 } 577 #endif 578 } 579 #else 580 #ifdef TCGETA 581 { 582 struct termio s; 583 static struct termio save_term; 584 static int saved_term = 0; 585 586 if (on) 587 { 588 /* 589 * Get terminal modes. 590 */ 591 ioctl(tty, TCGETA, &s); 592 593 /* 594 * Save modes and set certain variables dependent on modes. 595 */ 596 if (!saved_term) 597 { 598 save_term = s; 599 saved_term = 1; 600 } 601 #if HAVE_OSPEED 602 ospeed = s.c_cflag & CBAUD; 603 #endif 604 erase_char = s.c_cc[VERASE]; 605 kill_char = s.c_cc[VKILL]; 606 #ifdef VWERASE 607 werase_char = s.c_cc[VWERASE]; 608 #else 609 werase_char = CONTROL('W'); 610 #endif 611 612 /* 613 * Set the modes to the way we want them. 614 */ 615 set_termio_flags(&s); 616 s.c_cc[VMIN] = 1; 617 s.c_cc[VTIME] = 0; 618 #ifdef VSTOP 619 s.c_cc[VSTOP] = 0; 620 #endif 621 #ifdef VSTART 622 s.c_cc[VSTART] = 0; 623 #endif 624 } else 625 { 626 /* 627 * Restore saved modes. 628 */ 629 s = save_term; 630 } 631 ioctl(tty, TCSETAW, &s); 632 } 633 #else 634 #ifdef TIOCGETP 635 { 636 struct sgttyb s; 637 static struct sgttyb save_term; 638 static int saved_term = 0; 639 640 if (on) 641 { 642 /* 643 * Get terminal modes. 644 */ 645 ioctl(tty, TIOCGETP, &s); 646 647 /* 648 * Save modes and set certain variables dependent on modes. 649 */ 650 if (!saved_term) 651 { 652 save_term = s; 653 saved_term = 1; 654 } 655 #if HAVE_OSPEED 656 ospeed = s.sg_ospeed; 657 #endif 658 erase_char = s.sg_erase; 659 kill_char = s.sg_kill; 660 werase_char = CONTROL('W'); 661 662 /* 663 * Set the modes to the way we want them. 664 */ 665 s.sg_flags |= CBREAK; 666 s.sg_flags &= ~(ECHO); 667 } else 668 { 669 /* 670 * Restore saved modes. 671 */ 672 s = save_term; 673 } 674 ioctl(tty, TIOCSETN, &s); 675 } 676 #else 677 #ifdef _OSK 678 { 679 struct sgbuf s; 680 static struct sgbuf save_term; 681 static int saved_term = 0; 682 683 if (on) 684 { 685 /* 686 * Get terminal modes. 687 */ 688 _gs_opt(tty, &s); 689 690 /* 691 * Save modes and set certain variables dependent on modes. 692 */ 693 if (!saved_term) 694 { 695 save_term = s; 696 saved_term = 1; 697 } 698 erase_char = s.sg_bspch; 699 kill_char = s.sg_dlnch; 700 werase_char = CONTROL('W'); 701 702 /* 703 * Set the modes to the way we want them. 704 */ 705 s.sg_echo = 0; 706 s.sg_eofch = 0; 707 s.sg_pause = 0; 708 s.sg_psch = 0; 709 } else 710 { 711 /* 712 * Restore saved modes. 713 */ 714 s = save_term; 715 } 716 _ss_opt(tty, &s); 717 } 718 #else 719 /* MS-DOS, Windows, or OS2 */ 720 #if OS2 721 /* OS2 */ 722 LSIGNAL(SIGINT, SIG_IGN); 723 #endif 724 erase_char = '\b'; 725 #if MSDOS_COMPILER==DJGPPC 726 kill_char = CONTROL('U'); 727 /* 728 * So that when we shell out or run another program, its 729 * stdin is in cooked mode. We do not switch stdin to binary 730 * mode if fd0 is zero, since that means we were called before 731 * tty was reopened in open_getchr, in which case we would be 732 * changing the original stdin device outside less. 733 */ 734 if (fd0 != 0) 735 setmode(0, on ? O_BINARY : O_TEXT); 736 #else 737 kill_char = ESC; 738 #endif 739 werase_char = CONTROL('W'); 740 #endif 741 #endif 742 #endif 743 #endif 744 curr_on = on; 745 } 746 747 #if !MSDOS_COMPILER 748 749 /* 750 * Some glue to prevent calling termcap functions if tgetent() failed. 751 */ 752 static int hardcopy; 753 754 static constant char * ltget_env(constant char *tiname, constant char *tcname) 755 { 756 char envname[64]; 757 constant char *s; 758 759 if (termcap_debug) 760 { 761 struct env { struct env *next; char *name; char *value; }; 762 constant char *capname = tcname != NULL ? tcname : tiname; 763 static struct env *envs = NULL; 764 struct env *p; 765 for (p = envs; p != NULL; p = p->next) 766 if (strcmp(p->name, capname) == 0) 767 return p->value; 768 p = (struct env *) ecalloc(1, sizeof(struct env)); 769 p->name = save(capname); 770 p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char)); 771 sprintf(p->value, "<%s>", capname); 772 p->next = envs; 773 envs = p; 774 return p->value; 775 } 776 if (tiname != NULL) 777 { 778 SNPRINTF1(envname, sizeof(envname), "LESS_TERMINFO_%s", tiname); 779 s = lgetenv(envname); 780 if (!isnullenv(s)) 781 return s; 782 } 783 if (tcname != NULL) 784 { 785 SNPRINTF1(envname, sizeof(envname), "LESS_TERMCAP_%s", tcname); 786 s = lgetenv(envname); 787 if (!isnullenv(s)) 788 return s; 789 } 790 return NULL; 791 } 792 793 static int ltgetflag(constant char *tiname, constant char *tcname) 794 { 795 constant char *s; 796 797 if ((s = ltget_env(tiname, tcname)) != NULL) 798 return (*s != '\0' && *s != '0'); 799 if (hardcopy) 800 return (0); 801 #if USE_TERMINFO 802 return tiname == NULL ? 0 : tigetflag(tiname); 803 #else 804 return tcname == NULL ? 0 : tgetflag(tcname); 805 #endif 806 } 807 808 static int ltgetnum(constant char *tiname, constant char *tcname) 809 { 810 constant char *s; 811 812 if ((s = ltget_env(tiname, tcname)) != NULL) 813 return (atoi(s)); 814 if (hardcopy) 815 return (-1); 816 #if USE_TERMINFO 817 return tiname == NULL ? -1 : tigetnum(tiname); 818 #else 819 return tcname == NULL ? -1 : tgetnum(tcname); 820 #endif 821 } 822 823 static constant char * ltgetstr(constant char *tiname, constant char *tcname, char **pp) 824 { 825 constant char *s; 826 827 if ((s = ltget_env(tiname, tcname)) != NULL) 828 return (s); 829 if (hardcopy) 830 return (NULL); 831 #if USE_TERMINFO 832 if (tiname == NULL) 833 return (NULL); 834 s = tigetstr(tiname); 835 if (s == (constant char *)-1) 836 s = NULL; 837 return (s); 838 #else 839 if (tcname == NULL) 840 return (NULL); 841 return tgetstr(tcname, pp); 842 #endif 843 } 844 #endif /* MSDOS_COMPILER */ 845 846 /* 847 * Get size of the output screen. 848 */ 849 public void scrsize(void) 850 { 851 constant char *s; 852 int sys_height; 853 int sys_width; 854 #if !MSDOS_COMPILER 855 int n; 856 #endif 857 858 #define DEF_SC_WIDTH 80 859 #if MSDOS_COMPILER 860 #define DEF_SC_HEIGHT 25 861 #else 862 #define DEF_SC_HEIGHT 24 863 #endif 864 865 sys_width = sys_height = 0; 866 867 #if LESSTEST 868 if (0) /* can't use is_lesstest(): ttyin_name may not be set by scan_option yet */ 869 #endif /*LESSTEST*/ 870 { 871 #if MSDOS_COMPILER==MSOFTC 872 { 873 struct videoconfig w; 874 _getvideoconfig(&w); 875 sys_height = w.numtextrows; 876 sys_width = w.numtextcols; 877 } 878 #else 879 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 880 { 881 struct text_info w; 882 gettextinfo(&w); 883 sys_height = w.screenheight; 884 sys_width = w.screenwidth; 885 } 886 #else 887 #if MSDOS_COMPILER==WIN32C 888 { 889 CONSOLE_SCREEN_BUFFER_INFO scr; 890 GetConsoleScreenBufferInfo(con_out, &scr); 891 sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1; 892 sys_width = scr.srWindow.Right - scr.srWindow.Left + 1; 893 } 894 #else 895 #if OS2 896 { 897 int s[2]; 898 _scrsize(s); 899 sys_width = s[0]; 900 sys_height = s[1]; 901 /* 902 * When using terminal emulators for XFree86/OS2, the 903 * _scrsize function does not work well. 904 * Call the scrsize.exe program to get the window size. 905 */ 906 windowid = getenv("WINDOWID"); 907 if (windowid != NULL) 908 { 909 FILE *fd = popen("scrsize", "rt"); 910 if (fd != NULL) 911 { 912 int w, h; 913 fscanf(fd, "%i %i", &w, &h); 914 if (w > 0 && h > 0) 915 { 916 sys_width = w; 917 sys_height = h; 918 } 919 pclose(fd); 920 } 921 } 922 } 923 #else 924 #ifdef TIOCGWINSZ 925 { 926 struct winsize w; 927 if (ioctl(2, TIOCGWINSZ, &w) == 0 || ioctl(1, TIOCGWINSZ, &w) == 0) 928 { 929 if (w.ws_row > 0) 930 sys_height = w.ws_row; 931 if (w.ws_col > 0) 932 sys_width = w.ws_col; 933 } 934 } 935 #else 936 #ifdef WIOCGETD 937 { 938 struct uwdata w; 939 if (ioctl(2, WIOCGETD, &w) == 0 || ioctl(1, WIOCGETD, &w) == 0) 940 { 941 if (w.uw_height > 0) 942 sys_height = w.uw_height / w.uw_vs; 943 if (w.uw_width > 0) 944 sys_width = w.uw_width / w.uw_hs; 945 } 946 } 947 #endif 948 #endif 949 #endif 950 #endif 951 #endif 952 #endif 953 } 954 955 if (sys_height > 0) 956 sc_height = sys_height; 957 else if ((s = lgetenv("LINES")) != NULL) 958 sc_height = atoi(s); 959 #if !MSDOS_COMPILER 960 else if ((n = ltgetnum("lines", "li")) > 0) 961 sc_height = n; 962 #endif 963 if ((s = lgetenv("LESS_LINES")) != NULL) 964 { 965 int height = atoi(s); 966 sc_height = (height < 0) ? sc_height + height : height; 967 full_screen = FALSE; 968 } 969 if (sc_height <= 0) 970 sc_height = DEF_SC_HEIGHT; 971 972 if (sys_width > 0) 973 sc_width = sys_width; 974 else if ((s = lgetenv("COLUMNS")) != NULL) 975 sc_width = atoi(s); 976 #if !MSDOS_COMPILER 977 else if ((n = ltgetnum("cols", "co")) > 0) 978 sc_width = n; 979 #endif 980 if ((s = lgetenv("LESS_COLUMNS")) != NULL) 981 { 982 int width = atoi(s); 983 sc_width = (width < 0) ? sc_width + width : width; 984 } 985 if (sc_width <= 0) 986 sc_width = DEF_SC_WIDTH; 987 screen_size_changed(); 988 } 989 990 /* 991 * Recalculate things that depend on the screen size. 992 */ 993 public void screen_size_changed(void) 994 { 995 constant char *env = lgetenv("LESS_SHELL_LINES"); 996 shell_lines = isnullenv(env) ? 1 : atoi(env); 997 if (shell_lines >= sc_height) 998 shell_lines = sc_height - 1; 999 wscroll = (sc_height + 1) / 2; 1000 calc_jump_sline(); 1001 calc_shift_count(); 1002 calc_match_shift(); 1003 } 1004 1005 #if MSDOS_COMPILER==MSOFTC 1006 /* 1007 * Figure out how many empty loops it takes to delay a millisecond. 1008 */ 1009 static void get_clock(void) 1010 { 1011 clock_t start; 1012 1013 /* 1014 * Get synchronized at the start of a tick. 1015 */ 1016 start = clock(); 1017 while (clock() == start) 1018 ; 1019 /* 1020 * Now count loops till the next tick. 1021 */ 1022 start = clock(); 1023 msec_loops = 0; 1024 while (clock() == start) 1025 msec_loops++; 1026 /* 1027 * Convert from (loops per clock) to (loops per millisecond). 1028 */ 1029 msec_loops *= CLOCKS_PER_SEC; 1030 msec_loops /= 1000; 1031 } 1032 1033 /* 1034 * Delay for a specified number of milliseconds. 1035 */ 1036 static void delay(int msec) 1037 { 1038 long i; 1039 1040 while (msec-- > 0) 1041 { 1042 for (i = 0; i < msec_loops; i++) 1043 (void) clock(); 1044 } 1045 } 1046 #endif 1047 1048 /* 1049 * Return the characters actually input by a "special" key. 1050 */ 1051 public constant char * special_key_str(int key) 1052 { 1053 static char tbuf[40]; 1054 constant char *s; 1055 #if MSDOS_COMPILER || OS2 1056 static char k_right[] = { '\340', PCK_RIGHT, 0 }; 1057 static char k_left[] = { '\340', PCK_LEFT, 0 }; 1058 static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 }; 1059 static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 }; 1060 static char k_shift_right[] = { '\340', PCK_SHIFT_RIGHT, 0 }; 1061 static char k_shift_left[] = { '\340', PCK_SHIFT_LEFT, 0 }; 1062 static char k_insert[] = { '\340', PCK_INSERT, 0 }; 1063 static char k_delete[] = { '\340', PCK_DELETE, 0 }; 1064 static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 }; 1065 static char k_ctl_backspace[] = { '\177', 0 }; 1066 static char k_backspace[] = { '\b', 0 }; 1067 static char k_home[] = { '\340', PCK_HOME, 0 }; 1068 static char k_end[] = { '\340', PCK_END, 0 }; 1069 static char k_up[] = { '\340', PCK_UP, 0 }; 1070 static char k_down[] = { '\340', PCK_DOWN, 0 }; 1071 static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 }; 1072 static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 }; 1073 static char k_pageup[] = { '\340', PCK_PAGEUP, 0 }; 1074 static char k_ctl_home[] = { '\340', PCK_CTL_HOME, 0 }; 1075 static char k_ctl_end[] = { '\340', PCK_CTL_END, 0 }; 1076 static char k_shift_home[] = { '\340', PCK_SHIFT_HOME, 0 }; 1077 static char k_shift_end[] = { '\340', PCK_SHIFT_END, 0 }; 1078 static char k_f1[] = { '\340', PCK_F1, 0 }; 1079 #endif 1080 #if !MSDOS_COMPILER 1081 char *sp = tbuf; 1082 #endif 1083 1084 switch (key) 1085 { 1086 #if OS2 1087 /* 1088 * If windowid is not NULL, assume less is executed in 1089 * the XFree86 environment. 1090 */ 1091 case SK_RIGHT_ARROW: 1092 s = windowid ? ltgetstr("kcuf1", "kr", &sp) : k_right; 1093 break; 1094 case SK_LEFT_ARROW: 1095 s = windowid ? ltgetstr("kcub1", "kl", &sp) : k_left; 1096 break; 1097 case SK_UP_ARROW: 1098 s = windowid ? ltgetstr("kcuu1", "ku", &sp) : k_up; 1099 break; 1100 case SK_DOWN_ARROW: 1101 s = windowid ? ltgetstr("kcud1", "kd", &sp) : k_down; 1102 break; 1103 case SK_PAGE_UP: 1104 s = windowid ? ltgetstr("kpp", "kP", &sp) : k_pageup; 1105 break; 1106 case SK_PAGE_DOWN: 1107 s = windowid ? ltgetstr("knp", "kN", &sp) : k_pagedown; 1108 break; 1109 case SK_HOME: 1110 s = windowid ? ltgetstr("khome", "kh", &sp) : k_home; 1111 break; 1112 case SK_END: 1113 s = windowid ? ltgetstr("kend", "@7", &sp) : k_end; 1114 break; 1115 case SK_F1: 1116 s = windowid ? ltgetstr("kf1", "k1", &sp) : k_f1; 1117 break; 1118 case SK_DELETE: 1119 s = windowid ? ltgetstr("kdch1", "kD", &sp) : k_delete; 1120 if (s == NULL) 1121 { 1122 tbuf[0] = '\177'; 1123 tbuf[1] = '\0'; 1124 s = tbuf; 1125 } 1126 break; 1127 #endif 1128 #if MSDOS_COMPILER 1129 case SK_RIGHT_ARROW: 1130 s = k_right; 1131 break; 1132 case SK_LEFT_ARROW: 1133 s = k_left; 1134 break; 1135 case SK_UP_ARROW: 1136 s = k_up; 1137 break; 1138 case SK_DOWN_ARROW: 1139 s = k_down; 1140 break; 1141 case SK_PAGE_UP: 1142 s = k_pageup; 1143 break; 1144 case SK_PAGE_DOWN: 1145 s = k_pagedown; 1146 break; 1147 case SK_HOME: 1148 s = k_home; 1149 break; 1150 case SK_END: 1151 s = k_end; 1152 break; 1153 case SK_DELETE: 1154 s = k_delete; 1155 break; 1156 #endif 1157 #if MSDOS_COMPILER || OS2 1158 case SK_INSERT: 1159 s = k_insert; 1160 break; 1161 case SK_CTL_LEFT_ARROW: 1162 s = k_ctl_left; 1163 break; 1164 case SK_CTL_RIGHT_ARROW: 1165 s = k_ctl_right; 1166 break; 1167 case SK_SHIFT_LEFT_ARROW: 1168 s = k_shift_left; 1169 break; 1170 case SK_SHIFT_RIGHT_ARROW: 1171 s = k_shift_right; 1172 break; 1173 case SK_CTL_BACKSPACE: 1174 s = k_ctl_backspace; 1175 break; 1176 case SK_CTL_DELETE: 1177 s = k_ctl_delete; 1178 break; 1179 case SK_BACKSPACE: 1180 s = k_backspace; 1181 break; 1182 case SK_F1: 1183 s = k_f1; 1184 break; 1185 case SK_BACKTAB: 1186 s = k_backtab; 1187 break; 1188 case SK_SHIFT_HOME: 1189 s = k_shift_home; 1190 break; 1191 case SK_CTL_HOME: 1192 s = k_ctl_home; 1193 break; 1194 case SK_SHIFT_END: 1195 s = k_shift_end; 1196 break; 1197 case SK_CTL_END: 1198 s = k_ctl_end; 1199 break; 1200 #else 1201 case SK_RIGHT_ARROW: 1202 s = ltgetstr("kcuf1", "kr", &sp); 1203 break; 1204 case SK_LEFT_ARROW: 1205 s = ltgetstr("kcub1", "kl", &sp); 1206 break; 1207 case SK_UP_ARROW: 1208 s = ltgetstr("kcuu1", "ku", &sp); 1209 break; 1210 case SK_DOWN_ARROW: 1211 s = ltgetstr("kcud1", "kd", &sp); 1212 break; 1213 case SK_PAGE_UP: 1214 s = ltgetstr("kpp", "kP", &sp); 1215 break; 1216 case SK_PAGE_DOWN: 1217 s = ltgetstr("knp", "kN", &sp); 1218 break; 1219 case SK_HOME: 1220 s = ltgetstr("khome", "kh", &sp); 1221 break; 1222 case SK_SHIFT_HOME: 1223 s = ltgetstr("kHOM", "#2", &sp); 1224 break; 1225 case SK_CTL_HOME: 1226 s = ltgetstr("kHOM5", NULL, &sp); 1227 break; 1228 case SK_END: 1229 s = ltgetstr("kend", "@7", &sp); 1230 break; 1231 case SK_SHIFT_END: 1232 s = ltgetstr("kEND", "#7", &sp); 1233 break; 1234 case SK_CTL_END: 1235 s = ltgetstr("kEND5", NULL, &sp); 1236 break; 1237 case SK_INSERT: 1238 s = ltgetstr("kich1", "kI", &sp); 1239 break; 1240 case SK_BACKTAB: 1241 s = ltgetstr("kcbt", "kB", &sp); 1242 break; 1243 case SK_SHIFT_RIGHT_ARROW: 1244 s = ltgetstr("kRIT", NULL, &sp); 1245 break; 1246 case SK_SHIFT_LEFT_ARROW: 1247 s = ltgetstr("kLFT", NULL, &sp); 1248 break; 1249 case SK_CTL_RIGHT_ARROW: 1250 s = ltgetstr("kRIT5", NULL, &sp); 1251 break; 1252 case SK_CTL_LEFT_ARROW: 1253 s = ltgetstr("kLFT5", NULL, &sp); 1254 break; 1255 case SK_F1: 1256 s = ltgetstr("kf1", "k1", &sp); 1257 break; 1258 case SK_PAD_UL: 1259 s = ltgetstr("ka1", "K1", &sp); 1260 break; 1261 case SK_PAD_U: 1262 s = ltgetstr("ka2", NULL, &sp); 1263 break; 1264 case SK_PAD_UR: 1265 s = ltgetstr("ka3", "K3", &sp); 1266 break; 1267 case SK_PAD_L: 1268 s = ltgetstr("kb1", NULL, &sp); 1269 break; 1270 case SK_PAD_CENTER: 1271 s = ltgetstr("kb2", "K2", &sp); 1272 break; 1273 case SK_PAD_R: 1274 s = ltgetstr("kb3", NULL, &sp); 1275 break; 1276 case SK_PAD_DL: 1277 s = ltgetstr("kc1", "K4", &sp); 1278 break; 1279 case SK_PAD_D: 1280 s = ltgetstr("kc2", NULL, &sp); 1281 break; 1282 case SK_PAD_DR: 1283 s = ltgetstr("kc3", "K5", &sp); 1284 break; 1285 case SK_PAD_STAR: 1286 s = ltgetstr("kpMUL", NULL, &sp); 1287 break; 1288 case SK_PAD_SLASH: 1289 s = ltgetstr("kpDIV", NULL, &sp); 1290 break; 1291 case SK_PAD_DASH: 1292 s = ltgetstr("kpSUB", NULL, &sp); 1293 break; 1294 case SK_PAD_PLUS: 1295 s = ltgetstr("kpADD", NULL, &sp); 1296 break; 1297 case SK_PAD_DOT: 1298 s = ltgetstr("kpDOT", NULL, &sp); 1299 break; 1300 case SK_PAD_COMMA: 1301 s = ltgetstr("kpCMA", NULL, &sp); 1302 break; 1303 case SK_PAD_ZERO: 1304 s = ltgetstr("kpZRO", NULL, &sp); 1305 break; 1306 case SK_PAD_ENTER: 1307 s = kent; 1308 kent_mapped = TRUE; 1309 break; 1310 case SK_DELETE: 1311 s = ltgetstr("kdch1", "kD", &sp); 1312 if (s == NULL) 1313 { 1314 tbuf[0] = '\177'; 1315 tbuf[1] = '\0'; 1316 s = tbuf; 1317 } 1318 break; 1319 case SK_BACKSPACE: 1320 s = ltgetstr("kbs", "kb", &sp); 1321 if (s == NULL) 1322 { 1323 tbuf[0] = '\b'; 1324 tbuf[1] = '\0'; 1325 s = tbuf; 1326 } 1327 break; 1328 #endif 1329 case SK_CONTROL_K: 1330 tbuf[0] = CONTROL('K'); 1331 tbuf[1] = '\0'; 1332 s = tbuf; 1333 break; 1334 default: 1335 return (NULL); 1336 } 1337 if (s != NULL && *s == '\0') 1338 s = NULL; 1339 return (s); 1340 } 1341 1342 #if !MSDOS_COMPILER 1343 static constant char *ltgoto(constant char *cap, int col, int line) 1344 { 1345 #if USE_TERMINFO 1346 return LTPARM2(cap, line, col); 1347 #else 1348 return tgoto(cap, col, line); 1349 #endif 1350 } 1351 #endif /* MSDOS_COMPILER */ 1352 1353 #if MSDOS_COMPILER 1354 public void init_win_colors(void) 1355 { 1356 if (nm_fg_color == CV_ERROR || nm_fg_color == CV_NOCHANGE) nm_fg_color = sy_fg_color; 1357 if (nm_bg_color == CV_ERROR || nm_bg_color == CV_NOCHANGE) nm_bg_color = sy_bg_color; 1358 if (bo_fg_color == CV_NOCHANGE) bo_fg_color = sy_fg_color; else if (bo_fg_color == CV_ERROR) bo_fg_color = sy_fg_color | 8; 1359 if (bo_bg_color == CV_NOCHANGE) bo_bg_color = sy_bg_color; else if (bo_bg_color == CV_ERROR) bo_bg_color = sy_bg_color; 1360 if (ul_fg_color == CV_NOCHANGE) ul_fg_color = sy_fg_color; else if (ul_fg_color == CV_ERROR) ul_fg_color = (sy_bg_color == 3 || sy_bg_color == 11) ? 0 : 11; 1361 if (ul_bg_color == CV_NOCHANGE) ul_bg_color = sy_bg_color; else if (ul_bg_color == CV_ERROR) ul_bg_color = sy_bg_color; 1362 if (so_fg_color == CV_NOCHANGE) so_fg_color = sy_fg_color; else if (so_fg_color == CV_ERROR) so_fg_color = sy_bg_color; 1363 if (so_bg_color == CV_NOCHANGE) so_bg_color = sy_bg_color; else if (so_bg_color == CV_ERROR) so_bg_color = sy_fg_color; 1364 if (bl_fg_color == CV_NOCHANGE) bl_fg_color = sy_fg_color; else if (bl_fg_color == CV_ERROR) bl_fg_color = ul_bg_color; 1365 if (bl_bg_color == CV_NOCHANGE) bl_bg_color = sy_bg_color; else if (bl_bg_color == CV_ERROR) bl_bg_color = ul_fg_color; 1366 nm_fg_color |= nm_attr; 1367 bo_fg_color |= bo_attr; 1368 ul_fg_color |= ul_attr; 1369 so_fg_color |= so_attr; 1370 bl_fg_color |= bl_attr; 1371 } 1372 #endif /* MSDOS_COMPILER */ 1373 1374 /* 1375 * Get terminal capabilities via termcap. 1376 */ 1377 public void get_term(void) 1378 { 1379 termcap_debug = !isnullenv(lgetenv("LESS_TERMCAP_DEBUG")); 1380 #if MSDOS_COMPILER 1381 auto_wrap = 1; 1382 defer_wrap = 0; 1383 can_goto_line = 1; 1384 clear_bg = 1; 1385 /* 1386 * Set up default colors. 1387 * The xx_s_width and xx_e_width vars are already initialized to 0. 1388 */ 1389 #if MSDOS_COMPILER==MSOFTC 1390 sy_bg_color = _getbkcolor(); 1391 sy_fg_color = _gettextcolor(); 1392 get_clock(); 1393 #else 1394 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1395 { 1396 struct text_info w; 1397 gettextinfo(&w); 1398 sy_bg_color = (w.attribute >> 4) & 0x0F; 1399 sy_fg_color = (w.attribute >> 0) & 0x0F; 1400 } 1401 #else 1402 #if MSDOS_COMPILER==WIN32C 1403 { 1404 CONSOLE_SCREEN_BUFFER_INFO scr; 1405 1406 con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE); 1407 /* 1408 * Always open stdin in binary. Note this *must* be done 1409 * before any file operations have been done on fd0. 1410 */ 1411 SET_BINARY(0); 1412 GetConsoleMode(con_out, &init_console_output_mode); 1413 GetConsoleScreenBufferInfo(con_out, &scr); 1414 curr_attr = scr.wAttributes; 1415 sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */ 1416 sy_fg_color = curr_attr & FG_COLORS; 1417 } 1418 #endif 1419 #endif 1420 #endif 1421 init_win_colors(); 1422 1423 /* 1424 * Get size of the screen. 1425 */ 1426 scrsize(); 1427 pos_init(); 1428 1429 #else /* !MSDOS_COMPILER */ 1430 { 1431 constant char *t1; 1432 constant char *t2; 1433 constant char *term; 1434 char *sp; 1435 /* 1436 * Some termcap libraries assume termbuf is static 1437 * (accessible after tgetent returns). 1438 */ 1439 #if !USE_TERMINFO 1440 static char termbuf[TERMBUF_SIZE]; 1441 #endif 1442 static char sbuf[TERMSBUF_SIZE]; 1443 1444 #if OS2 1445 /* 1446 * Make sure the termcap database is available. 1447 */ 1448 constant char *cp = lgetenv("TERMCAP"); 1449 if (isnullenv(cp)) 1450 { 1451 char *termcap; 1452 if ((sp = homefile("termcap.dat")) != NULL) 1453 { 1454 termcap = (char *) ecalloc(strlen(sp)+9, sizeof(char)); 1455 sprintf(termcap, "TERMCAP=%s", sp); 1456 free(sp); 1457 putenv(termcap); 1458 } 1459 } 1460 #endif 1461 /* 1462 * Find out what kind of terminal this is. 1463 */ 1464 if ((term = lgetenv("TERM")) == NULL && (term = getenv("TERM")) == NULL) 1465 term = DEFAULT_TERM; 1466 hardcopy = 0; 1467 #if USE_TERMINFO 1468 if (cur_term != NULL) 1469 del_curterm(cur_term); 1470 if (setupterm(term, -1, NULL) != OK) 1471 hardcopy = 1; 1472 #else 1473 if (tgetent(termbuf, term) != TGETENT_OK) 1474 hardcopy = 1; 1475 #endif 1476 if (!hardcopy && ltgetflag("hc", "hc")) 1477 hardcopy = 1; 1478 1479 /* 1480 * Get size of the screen. 1481 */ 1482 scrsize(); 1483 pos_init(); 1484 1485 auto_wrap = ltgetflag("am", "am"); 1486 defer_wrap = ltgetflag("xenl", "xn"); 1487 above_mem = ltgetflag("da", "da"); 1488 below_mem = ltgetflag("db", "db"); 1489 clear_bg = ltgetflag("bce", "ut"); 1490 no_alt_screen = ltgetflag("nrrmc", "NR"); 1491 1492 /* 1493 * Assumes termcap variable "sg" is the printing width of: 1494 * the standout sequence, the end standout sequence, 1495 * the underline sequence, the end underline sequence, 1496 * the boldface sequence, and the end boldface sequence. 1497 */ 1498 if ((so_s_width = ltgetnum("xmc", "sg")) < 0) 1499 so_s_width = 0; 1500 so_e_width = so_s_width; 1501 1502 bo_s_width = bo_e_width = so_s_width; 1503 ul_s_width = ul_e_width = so_s_width; 1504 bl_s_width = bl_e_width = so_s_width; 1505 1506 #if HILITE_SEARCH 1507 if (so_s_width > 0 || so_e_width > 0) 1508 /* 1509 * Disable highlighting by default on magic cookie terminals. 1510 * Turning on highlighting might change the displayed width 1511 * of a line, causing the display to get messed up. 1512 * The user can turn it back on with -g, 1513 * but she won't like the results. 1514 */ 1515 hilite_search = 0; 1516 #endif 1517 1518 /* 1519 * Get various string-valued capabilities. 1520 */ 1521 sp = sbuf; 1522 1523 #if HAVE_OSPEED 1524 sc_pad = ltgetstr("pad", "pc", &sp); 1525 if (sc_pad != NULL) 1526 PC = *sc_pad; 1527 #endif 1528 1529 sc_s_keypad = ltgetstr("smkx", "ks", &sp); 1530 if (sc_s_keypad == NULL) 1531 sc_s_keypad = ""; 1532 sc_e_keypad = ltgetstr("rmkx", "ke", &sp); 1533 if (sc_e_keypad == NULL) 1534 sc_e_keypad = ""; 1535 kent = ltgetstr("kent", "@8", &sp); 1536 1537 sc_s_mousecap = ltgetstr("MOUSE_START", "MOUSE_START", &sp); 1538 if (sc_s_mousecap == NULL) 1539 sc_s_mousecap = ESCS "[?1000h" ESCS "[?1002h" ESCS "[?1006h"; 1540 sc_e_mousecap = ltgetstr("MOUSE_END", "MOUSE_END", &sp); 1541 if (sc_e_mousecap == NULL) 1542 sc_e_mousecap = ESCS "[?1006l" ESCS "[?1002l" ESCS "[?1000l"; 1543 1544 sc_s_bracketed_paste = ltgetstr("BRACKETED_PASTE_START", "BRACKETED_PASTE_START", &sp); 1545 if (sc_s_bracketed_paste == NULL) 1546 sc_s_bracketed_paste = ESCS"[?2004h"; 1547 sc_e_bracketed_paste = ltgetstr("BRACKETED_PASTE_END", "BRACKETED_PASTE_END", &sp); 1548 if (sc_e_bracketed_paste == NULL) 1549 sc_e_bracketed_paste = ESCS"[?2004l"; 1550 1551 sc_suspend = ltgetstr("SUSPEND", "SUSPEND", &sp); 1552 if (sc_suspend == NULL) 1553 sc_suspend = ""; 1554 sc_resume = ltgetstr("RESUME", "RESUME", &sp); 1555 if (sc_resume == NULL) 1556 sc_resume = ""; 1557 1558 sc_init = ltgetstr("smcup", "ti", &sp); 1559 if (sc_init == NULL) 1560 sc_init = ""; 1561 1562 sc_deinit= ltgetstr("rmcup", "te", &sp); 1563 if (sc_deinit == NULL) 1564 sc_deinit = ""; 1565 1566 sc_eol_clear = ltgetstr("el", "ce", &sp); 1567 if (sc_eol_clear == NULL || *sc_eol_clear == '\0') 1568 { 1569 missing_cap = TRUE; 1570 sc_eol_clear = ""; 1571 } 1572 1573 sc_eos_clear = ltgetstr("ed", "cd", &sp); 1574 if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0')) 1575 { 1576 missing_cap = TRUE; 1577 sc_eos_clear = ""; 1578 } 1579 1580 sc_clear = ltgetstr("clear", "cl", &sp); 1581 if (sc_clear == NULL || *sc_clear == '\0') 1582 { 1583 missing_cap = TRUE; 1584 sc_clear = "\n\n"; 1585 } 1586 1587 sc_move = ltgetstr("cup", "cm", &sp); 1588 if (sc_move == NULL || *sc_move == '\0') 1589 { 1590 /* 1591 * This is not an error here, because we don't 1592 * always need sc_move. 1593 * We need it only if we don't have home or lower-left. 1594 */ 1595 sc_move = ""; 1596 can_goto_line = 0; 1597 } else 1598 can_goto_line = 1; 1599 1600 tmodes("smso", "rmso", "so", "se", &sc_s_in, &sc_s_out, "", "", &sp); 1601 tmodes("smul", "rmul", "us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp); 1602 tmodes("bold", "sgr0", "md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp); 1603 tmodes("blink", "sgr0", "mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp); 1604 1605 sc_visual_bell = ltgetstr("flash", "vb", &sp); 1606 if (sc_visual_bell == NULL) 1607 sc_visual_bell = ""; 1608 1609 if (ltgetflag(NULL, "bs")) 1610 sc_backspace = "\b"; 1611 else 1612 { 1613 sc_backspace = ltgetstr("OTbc", "bc", &sp); 1614 if (sc_backspace == NULL || *sc_backspace == '\0') 1615 sc_backspace = "\b"; 1616 } 1617 1618 /* 1619 * Choose between using "ho" and "cm" ("home" and "cursor move") 1620 * to move the cursor to the upper left corner of the screen. 1621 */ 1622 t1 = ltgetstr("home", "ho", &sp); 1623 if (t1 == NULL) 1624 t1 = ""; 1625 if (*sc_move == '\0') 1626 t2 = ""; 1627 else 1628 { 1629 strcpy(sp, ltgoto(sc_move, 0, 0)); 1630 t2 = sp; 1631 sp += strlen(sp) + 1; 1632 } 1633 sc_home = cheaper(t1, t2, "|\b^"); 1634 1635 /* 1636 * Choose between using "ll" and "cm" ("lower left" and "cursor move") 1637 * to move the cursor to the lower left corner of the screen. 1638 */ 1639 t1 = ltgetstr("ll", "ll", &sp); 1640 if (t1 == NULL || !full_screen) 1641 t1 = ""; 1642 if (*sc_move == '\0') 1643 t2 = ""; 1644 else 1645 { 1646 strcpy(sp, ltgoto(sc_move, 0, sc_height-1)); 1647 t2 = sp; 1648 sp += strlen(sp) + 1; 1649 } 1650 sc_lower_left = cheaper(t1, t2, "\r"); 1651 1652 /* 1653 * Get carriage return string. 1654 */ 1655 sc_return = ltgetstr("cr", "cr", &sp); 1656 if (sc_return == NULL) 1657 sc_return = "\r"; 1658 1659 /* 1660 * Choose between using "al" or "sr" ("add line" or "scroll reverse") 1661 * to add a line at the top of the screen. 1662 */ 1663 t1 = ltgetstr("ill", "al", &sp); 1664 if (t1 == NULL) 1665 t1 = ""; 1666 t2 = ltgetstr("ri", "sr", &sp); 1667 if (t2 == NULL) 1668 t2 = ""; 1669 if (*t1 == '\0' && *t2 == '\0') 1670 sc_addline = ""; 1671 else if (above_mem) 1672 sc_addline = t1; 1673 else 1674 sc_addline = cheaper(t1, t2, ""); 1675 if (*sc_addline == '\0') 1676 { 1677 /* 1678 * Force repaint on any backward movement. 1679 */ 1680 no_back_scroll = TRUE; 1681 } 1682 } 1683 #endif /* MSDOS_COMPILER */ 1684 } 1685 1686 #if !MSDOS_COMPILER 1687 /* 1688 * Return the cost of displaying a termcap string. 1689 * We use the trick of calling tputs, but as a char printing function 1690 * we give it inc_costcount, which just increments "costcount". 1691 * This tells us how many chars would be printed by using this string. 1692 */ 1693 static int costcount; 1694 1695 /*ARGSUSED*/ 1696 static int inc_costcount(int c) 1697 { 1698 costcount++; 1699 return (c); 1700 } 1701 1702 static int cost(constant char *t) 1703 { 1704 costcount = 0; 1705 tputs(t, sc_height, inc_costcount); 1706 return (costcount); 1707 } 1708 1709 /* 1710 * Return the "best" of the two given termcap strings. 1711 * The best, if both exist, is the one with the lower 1712 * cost (see cost() function). 1713 */ 1714 static constant char * cheaper(constant char *t1, constant char *t2, constant char *def) 1715 { 1716 if (*t1 == '\0' && *t2 == '\0') 1717 { 1718 missing_cap = TRUE; 1719 return (def); 1720 } 1721 if (*t1 == '\0') 1722 return (t2); 1723 if (*t2 == '\0') 1724 return (t1); 1725 if (cost(t1) < cost(t2)) 1726 return (t1); 1727 return (t2); 1728 } 1729 1730 static void tmodes(constant char *inti, constant char *outti, constant char *intc, constant char *outtc, constant char **instr, constant char **outstr, constant char *def_instr, constant char *def_outstr, char **spp) 1731 { 1732 *instr = ltgetstr(inti, intc, spp); 1733 if (*instr == NULL) 1734 { 1735 /* Use defaults. */ 1736 *instr = def_instr; 1737 *outstr = def_outstr; 1738 return; 1739 } 1740 1741 *outstr = ltgetstr(outti, outtc, spp); 1742 if (*outstr == NULL) 1743 /* No specific out capability; use "me". */ 1744 *outstr = ltgetstr("sgr0", "me", spp); 1745 if (*outstr == NULL) 1746 /* Don't even have "me"; use a null string. */ 1747 *outstr = ""; 1748 } 1749 1750 #endif /* MSDOS_COMPILER */ 1751 1752 1753 /* 1754 * Below are the functions which perform all the 1755 * terminal-specific screen manipulation. 1756 */ 1757 1758 1759 #if MSDOS_COMPILER 1760 1761 #if MSDOS_COMPILER==WIN32C 1762 static void _settextposition(int row, int col) 1763 { 1764 COORD cpos; 1765 CONSOLE_SCREEN_BUFFER_INFO csbi; 1766 1767 GetConsoleScreenBufferInfo(con_out, &csbi); 1768 cpos.X = csbi.srWindow.Left + (col - 1); 1769 cpos.Y = csbi.srWindow.Top + (row - 1); 1770 SetConsoleCursorPosition(con_out, cpos); 1771 } 1772 #endif 1773 1774 /* 1775 * Initialize the screen to the correct color at startup. 1776 */ 1777 static void initcolor(void) 1778 { 1779 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 1780 intensevideo(); 1781 #endif 1782 SETCOLORS(nm_fg_color, nm_bg_color); 1783 #if 0 1784 /* 1785 * This clears the screen at startup. This is different from 1786 * the behavior of other versions of less. Disable it for now. 1787 */ 1788 char *blanks; 1789 int row; 1790 int col; 1791 1792 /* 1793 * Create a complete, blank screen using "normal" colors. 1794 */ 1795 SETCOLORS(nm_fg_color, nm_bg_color); 1796 blanks = (char *) ecalloc(width+1, sizeof(char)); 1797 for (col = 0; col < sc_width; col++) 1798 blanks[col] = ' '; 1799 blanks[sc_width] = '\0'; 1800 for (row = 0; row < sc_height; row++) 1801 _outtext(blanks); 1802 free(blanks); 1803 #endif 1804 } 1805 #endif 1806 1807 #if MSDOS_COMPILER==WIN32C 1808 1809 /* 1810 * Enable virtual terminal processing, if available. 1811 */ 1812 static void win32_init_vt_term(void) 1813 { 1814 if (vt_enabled == 0 || (vt_enabled == 1 && con_out == con_out_ours)) 1815 return; /* already initialized */ 1816 1817 /* don't care about the initial mode, and win VT hard-enables am+xn */ 1818 vt_enabled = SetConsoleMode(con_out, ENABLE_PROCESSED_OUTPUT | 1819 ENABLE_VIRTUAL_TERMINAL_PROCESSING | 1820 ENABLE_WRAP_AT_EOL_OUTPUT); 1821 if (vt_enabled) 1822 { 1823 auto_wrap = 1; 1824 defer_wrap = 1; 1825 } 1826 } 1827 1828 static void win32_deinit_vt_term(void) 1829 { 1830 if (vt_enabled == 1 && con_out == con_out_save) 1831 SetConsoleMode(con_out, init_console_output_mode); 1832 } 1833 1834 /* 1835 * Termcap-like init with a private win32 console. 1836 */ 1837 static void win32_init_term(void) 1838 { 1839 CONSOLE_SCREEN_BUFFER_INFO scr; 1840 COORD size; 1841 1842 if (con_out_save == INVALID_HANDLE_VALUE) 1843 return; 1844 1845 GetConsoleScreenBufferInfo(con_out_save, &scr); 1846 1847 if (con_out_ours == INVALID_HANDLE_VALUE) 1848 { 1849 /* 1850 * Create our own screen buffer, so that we 1851 * may restore the original when done. 1852 */ 1853 con_out_ours = CreateConsoleScreenBuffer( 1854 GENERIC_WRITE | GENERIC_READ, 1855 FILE_SHARE_WRITE | FILE_SHARE_READ, 1856 (LPSECURITY_ATTRIBUTES) NULL, 1857 CONSOLE_TEXTMODE_BUFFER, 1858 (LPVOID) NULL); 1859 1860 /* 1861 * We don't care about the initial state. We need processed 1862 * output without anything else (no wrap at EOL, no VT, 1863 * no disabled auto-return). 1864 */ 1865 if (SetConsoleMode(con_out_ours, ENABLE_PROCESSED_OUTPUT)) 1866 auto_wrap = 0; 1867 } 1868 1869 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 1870 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 1871 SetConsoleScreenBufferSize(con_out_ours, size); 1872 SetConsoleActiveScreenBuffer(con_out_ours); 1873 con_out = con_out_ours; 1874 } 1875 1876 /* 1877 * Restore the startup console. 1878 */ 1879 static void win32_deinit_term(void) 1880 { 1881 if (con_out_save == INVALID_HANDLE_VALUE) 1882 return; 1883 if (quitting) 1884 (void) CloseHandle(con_out_ours); 1885 SetConsoleActiveScreenBuffer(con_out_save); 1886 con_out = con_out_save; 1887 } 1888 1889 #endif 1890 1891 #if !MSDOS_COMPILER 1892 static void do_tputs(constant char *str, int affcnt, int (*f_putc)(int)) 1893 { 1894 #if LESSTEST 1895 if (is_lesstest() && f_putc == putchr) 1896 putstr(str); 1897 else 1898 #endif /*LESSTEST*/ 1899 tputs(str, affcnt, f_putc); 1900 } 1901 1902 /* 1903 * Like tputs but we handle $<...> delay strings here because 1904 * some implementations of tputs don't perform delays correctly. 1905 */ 1906 static void ltputs(constant char *str, int affcnt, int (*f_putc)(int)) 1907 { 1908 while (str != NULL && *str != '\0') 1909 { 1910 constant char *obrac = strstr(str, "$<"); 1911 if (obrac != NULL) 1912 { 1913 char str2[64]; 1914 size_t slen = ptr_diff(obrac, str); 1915 if (slen < sizeof(str2)) 1916 { 1917 int delay; 1918 /* Output first part of string (before "$<"). */ 1919 memcpy(str2, str, slen); 1920 str2[slen] = '\0'; 1921 do_tputs(str2, affcnt, f_putc); 1922 str += slen + 2; 1923 /* Perform the delay. */ 1924 delay = lstrtoic(str, &str, 10); 1925 if (*str == '*') 1926 if (ckd_mul(&delay, delay, affcnt)) 1927 delay = INT_MAX; 1928 flush(); 1929 sleep_ms(delay); 1930 /* Skip past closing ">" at end of delay string. */ 1931 str = strstr(str, ">"); 1932 if (str != NULL) 1933 str++; 1934 continue; 1935 } 1936 } 1937 /* Pass the rest of the string to tputs and we're done. */ 1938 do_tputs(str, affcnt, f_putc); 1939 break; 1940 } 1941 } 1942 #endif /* MSDOS_COMPILER */ 1943 1944 /* 1945 * Configure the terminal so mouse clicks and wheel moves 1946 * produce input to less. 1947 */ 1948 public void init_mouse(void) 1949 { 1950 #if !MSDOS_COMPILER 1951 ltputs(sc_s_mousecap, sc_height, putchr); 1952 #else 1953 #if MSDOS_COMPILER==WIN32C 1954 curr_console_input_mode = mouse_console_input_mode; 1955 SetConsoleMode(tty, curr_console_input_mode); 1956 #endif 1957 #endif 1958 } 1959 1960 /* 1961 * Configure the terminal so mouse clicks and wheel moves 1962 * are handled by the system (so text can be selected, etc). 1963 */ 1964 public void deinit_mouse(void) 1965 { 1966 #if !MSDOS_COMPILER 1967 ltputs(sc_e_mousecap, sc_height, putchr); 1968 #else 1969 #if MSDOS_COMPILER==WIN32C 1970 curr_console_input_mode = base_console_input_mode; 1971 SetConsoleMode(tty, curr_console_input_mode); 1972 #endif 1973 #endif 1974 } 1975 1976 /* 1977 * Suspend screen updates. 1978 */ 1979 public void suspend_screen(void) 1980 { 1981 #if !MSDOS_COMPILER 1982 ltputs(sc_suspend, 1, putchr); 1983 #endif 1984 } 1985 1986 /* 1987 * Resume screen updates. 1988 */ 1989 public void resume_screen(void) 1990 { 1991 #if !MSDOS_COMPILER 1992 ltputs(sc_resume, 1, putchr); 1993 #endif 1994 } 1995 1996 /* 1997 * Initialize terminal 1998 */ 1999 public void term_init(void) 2000 { 2001 if (term_init_done) 2002 return; 2003 term_init_done = term_init_ever = TRUE; 2004 clear_bot_if_needed(); 2005 #if !MSDOS_COMPILER 2006 if (!(quit_if_one_screen && one_screen)) 2007 { 2008 if (!no_init) 2009 { 2010 ltputs(sc_init, sc_height, putchr); 2011 /* 2012 * Some terminals leave the cursor unmoved when switching 2013 * to the alt screen. To avoid having the text appear at 2014 * a seemingly random line on the alt screen, move to 2015 * lower left if we are using an alt screen. 2016 */ 2017 if (*sc_init != '\0' && *sc_deinit != '\0' && !no_alt_screen) 2018 lower_left(); 2019 term_addrs = TRUE; 2020 } 2021 if (!no_keypad) 2022 ltputs(sc_s_keypad, sc_height, putchr); 2023 if (emouse != 0) 2024 init_mouse(); 2025 if (no_paste) 2026 init_bracketed_paste(); 2027 } 2028 if (top_scroll) 2029 { 2030 int i; 2031 2032 /* 2033 * This is nice to terminals with no alternate screen, 2034 * but with saved scrolled-off-the-top lines. This way, 2035 * no previous line is lost, but we start with a whole 2036 * screen to ourself. 2037 */ 2038 for (i = 1; i < sc_height; i++) 2039 putchr('\n'); 2040 } else 2041 line_left(); 2042 #else 2043 #if MSDOS_COMPILER==WIN32C 2044 if (!(quit_if_one_screen && one_screen)) 2045 { 2046 if (!no_init) 2047 { 2048 win32_init_term(); 2049 term_addrs = TRUE; 2050 } 2051 if (emouse != 0) 2052 init_mouse(); 2053 2054 } 2055 win32_init_vt_term(); 2056 #endif 2057 initcolor(); 2058 flush(); 2059 #endif 2060 } 2061 2062 /* 2063 * Deinitialize terminal 2064 */ 2065 public void term_deinit(void) 2066 { 2067 if (!term_init_done) 2068 return; 2069 #if !MSDOS_COMPILER 2070 if (!(quit_if_one_screen && one_screen)) 2071 { 2072 if (emouse != 0) 2073 deinit_mouse(); 2074 if (no_paste) 2075 deinit_bracketed_paste(); 2076 if (!no_keypad) 2077 ltputs(sc_e_keypad, sc_height, putchr); 2078 if (!no_init) 2079 ltputs(sc_deinit, sc_height, putchr); 2080 } 2081 #else 2082 /* Restore system colors. */ 2083 SETCOLORS(sy_fg_color, sy_bg_color); 2084 #if MSDOS_COMPILER==WIN32C 2085 win32_deinit_vt_term(); 2086 if (!(quit_if_one_screen && one_screen)) 2087 { 2088 if (emouse != 0) 2089 deinit_mouse(); 2090 if (!no_init) 2091 win32_deinit_term(); 2092 } 2093 #else 2094 /* Need clreol to make SETCOLORS take effect. */ 2095 clreol(); 2096 #endif 2097 #endif 2098 term_init_done = FALSE; 2099 } 2100 2101 /* 2102 * Are we interactive (ie. writing to an initialized tty)? 2103 */ 2104 public lbool interactive(void) 2105 { 2106 return (is_tty && term_init_done); 2107 } 2108 2109 static void assert_interactive(void) 2110 { 2111 } 2112 2113 /* 2114 * Home cursor (move to upper left corner of screen). 2115 */ 2116 public void home(void) 2117 { 2118 assert_interactive(); 2119 #if !MSDOS_COMPILER 2120 ltputs(sc_home, 1, putchr); 2121 #else 2122 flush(); 2123 _settextposition(1,1); 2124 #endif 2125 } 2126 2127 #if LESSTEST 2128 public void dump_screen(void) 2129 { 2130 char dump_cmd[32]; 2131 SNPRINTF1(dump_cmd, sizeof(dump_cmd), ESCS"0;0;%dR", sc_width * sc_height); 2132 ltputs(dump_cmd, sc_height, putchr); 2133 flush(); 2134 } 2135 #endif /*LESSTEST*/ 2136 2137 /* 2138 * Add a blank line (called with cursor at home). 2139 * Should scroll the display down. 2140 */ 2141 public void add_line(void) 2142 { 2143 assert_interactive(); 2144 #if !MSDOS_COMPILER 2145 ltputs(sc_addline, sc_height, putchr); 2146 #else 2147 flush(); 2148 #if MSDOS_COMPILER==MSOFTC 2149 _scrolltextwindow(_GSCROLLDOWN); 2150 _settextposition(1,1); 2151 #else 2152 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2153 movetext(1,1, sc_width,sc_height-1, 1,2); 2154 gotoxy(1,1); 2155 clreol(); 2156 #else 2157 #if MSDOS_COMPILER==WIN32C 2158 { 2159 CHAR_INFO fillchar; 2160 SMALL_RECT rcSrc, rcClip; 2161 COORD new_org; 2162 CONSOLE_SCREEN_BUFFER_INFO csbi; 2163 2164 GetConsoleScreenBufferInfo(con_out,&csbi); 2165 2166 /* The clip rectangle is the entire visible screen. */ 2167 rcClip.Left = csbi.srWindow.Left; 2168 rcClip.Top = csbi.srWindow.Top; 2169 rcClip.Right = csbi.srWindow.Right; 2170 rcClip.Bottom = csbi.srWindow.Bottom; 2171 2172 /* The source rectangle is the visible screen minus the last line. */ 2173 rcSrc = rcClip; 2174 rcSrc.Bottom--; 2175 2176 /* Move the top left corner of the source window down one row. */ 2177 new_org.X = rcSrc.Left; 2178 new_org.Y = rcSrc.Top + 1; 2179 2180 /* Fill the right character and attributes. */ 2181 fillchar.Char.AsciiChar = ' '; 2182 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2183 fillchar.Attributes = curr_attr; 2184 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 2185 _settextposition(1,1); 2186 } 2187 #endif 2188 #endif 2189 #endif 2190 #endif 2191 } 2192 2193 #if 0 2194 /* 2195 * Remove the n topmost lines and scroll everything below it in the 2196 * window upward. This is needed to stop leaking the topmost line 2197 * into the scrollback buffer when we go down-one-line (in WIN32). 2198 */ 2199 public void remove_top(int n) 2200 { 2201 #if MSDOS_COMPILER==WIN32C 2202 SMALL_RECT rcSrc, rcClip; 2203 CHAR_INFO fillchar; 2204 COORD new_org; 2205 CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ 2206 2207 if (n >= sc_height - 1) 2208 { 2209 lclear(); 2210 home(); 2211 return; 2212 } 2213 2214 flush(); 2215 2216 GetConsoleScreenBufferInfo(con_out, &csbi); 2217 2218 /* Get the extent of all-visible-rows-but-the-last. */ 2219 rcSrc.Left = csbi.srWindow.Left; 2220 rcSrc.Top = csbi.srWindow.Top + n; 2221 rcSrc.Right = csbi.srWindow.Right; 2222 rcSrc.Bottom = csbi.srWindow.Bottom; 2223 2224 /* Get the clip rectangle. */ 2225 rcClip.Left = rcSrc.Left; 2226 rcClip.Top = csbi.srWindow.Top; 2227 rcClip.Right = rcSrc.Right; 2228 rcClip.Bottom = rcSrc.Bottom ; 2229 2230 /* Move the source window up n rows. */ 2231 new_org.X = rcSrc.Left; 2232 new_org.Y = rcSrc.Top - n; 2233 2234 /* Fill the right character and attributes. */ 2235 fillchar.Char.AsciiChar = ' '; 2236 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2237 fillchar.Attributes = curr_attr; 2238 2239 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 2240 2241 /* Position cursor on first blank line. */ 2242 goto_line(sc_height - n - 1); 2243 #endif 2244 } 2245 #endif 2246 2247 #if MSDOS_COMPILER==WIN32C 2248 /* 2249 * Clear the screen. 2250 */ 2251 static void win32_clear(void) 2252 { 2253 /* 2254 * This will clear only the currently visible rows of the NT 2255 * console buffer, which means none of the precious scrollback 2256 * rows are touched making for faster scrolling. Note that, if 2257 * the window has fewer columns than the console buffer (i.e. 2258 * there is a horizontal scrollbar as well), the entire width 2259 * of the visible rows will be cleared. 2260 */ 2261 COORD topleft; 2262 DWORD nchars; 2263 DWORD winsz; 2264 CONSOLE_SCREEN_BUFFER_INFO csbi; 2265 2266 /* get the number of cells in the current buffer */ 2267 GetConsoleScreenBufferInfo(con_out, &csbi); 2268 winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1); 2269 topleft.X = 0; 2270 topleft.Y = csbi.srWindow.Top; 2271 2272 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2273 FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars); 2274 FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars); 2275 } 2276 2277 /* 2278 * Remove the n topmost lines and scroll everything below it in the 2279 * window upward. 2280 */ 2281 public void win32_scroll_up(int n) 2282 { 2283 SMALL_RECT rcSrc, rcClip; 2284 CHAR_INFO fillchar; 2285 COORD topleft; 2286 COORD new_org; 2287 DWORD nchars; 2288 DWORD size; 2289 CONSOLE_SCREEN_BUFFER_INFO csbi; 2290 2291 if (n <= 0) 2292 return; 2293 2294 if (n >= sc_height - 1) 2295 { 2296 win32_clear(); 2297 _settextposition(1,1); 2298 return; 2299 } 2300 2301 /* Get the extent of what will remain visible after scrolling. */ 2302 GetConsoleScreenBufferInfo(con_out, &csbi); 2303 rcSrc.Left = csbi.srWindow.Left; 2304 rcSrc.Top = csbi.srWindow.Top + n; 2305 rcSrc.Right = csbi.srWindow.Right; 2306 rcSrc.Bottom = csbi.srWindow.Bottom; 2307 2308 /* Get the clip rectangle. */ 2309 rcClip.Left = rcSrc.Left; 2310 rcClip.Top = csbi.srWindow.Top; 2311 rcClip.Right = rcSrc.Right; 2312 rcClip.Bottom = rcSrc.Bottom ; 2313 2314 /* Move the source text to the top of the screen. */ 2315 new_org.X = rcSrc.Left; 2316 new_org.Y = rcClip.Top; 2317 2318 /* Fill the right character and attributes. */ 2319 fillchar.Char.AsciiChar = ' '; 2320 fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color); 2321 2322 /* Scroll the window. */ 2323 SetConsoleTextAttribute(con_out, fillchar.Attributes); 2324 ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar); 2325 2326 /* Clear remaining lines at bottom. */ 2327 topleft.X = csbi.dwCursorPosition.X; 2328 topleft.Y = rcSrc.Bottom - n; 2329 size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X); 2330 FillConsoleOutputCharacter(con_out, ' ', size, topleft, 2331 &nchars); 2332 FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft, 2333 &nchars); 2334 SetConsoleTextAttribute(con_out, curr_attr); 2335 2336 /* Move cursor n lines up from where it was. */ 2337 csbi.dwCursorPosition.Y -= n; 2338 SetConsoleCursorPosition(con_out, csbi.dwCursorPosition); 2339 } 2340 #endif 2341 2342 /* 2343 * Move cursor to lower left corner of screen. 2344 */ 2345 public void lower_left(void) 2346 { 2347 assert_interactive(); 2348 #if !MSDOS_COMPILER 2349 ltputs(sc_lower_left, 1, putchr); 2350 #else 2351 flush(); 2352 _settextposition(sc_height, 1); 2353 #endif 2354 } 2355 2356 /* 2357 * Move cursor to left position of current line. 2358 */ 2359 public void line_left(void) 2360 { 2361 assert_interactive(); 2362 #if !MSDOS_COMPILER 2363 ltputs(sc_return, 1, putchr); 2364 #else 2365 { 2366 int row; 2367 flush(); 2368 #if MSDOS_COMPILER==WIN32C 2369 { 2370 CONSOLE_SCREEN_BUFFER_INFO scr; 2371 GetConsoleScreenBufferInfo(con_out, &scr); 2372 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 2373 } 2374 #else 2375 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2376 row = wherey(); 2377 #else 2378 { 2379 struct rccoord tpos = _gettextposition(); 2380 row = tpos.row; 2381 } 2382 #endif 2383 #endif 2384 _settextposition(row, 1); 2385 } 2386 #endif 2387 } 2388 2389 /* 2390 * Check if the console size has changed and reset internals 2391 * (in lieu of SIGWINCH for WIN32). 2392 */ 2393 public void check_winch(void) 2394 { 2395 #if MSDOS_COMPILER==WIN32C 2396 CONSOLE_SCREEN_BUFFER_INFO scr; 2397 COORD size; 2398 2399 if (con_out == INVALID_HANDLE_VALUE) 2400 return; 2401 2402 flush(); 2403 GetConsoleScreenBufferInfo(con_out, &scr); 2404 size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1; 2405 size.X = scr.srWindow.Right - scr.srWindow.Left + 1; 2406 if (size.Y != sc_height || size.X != sc_width) 2407 { 2408 sc_height = size.Y; 2409 sc_width = size.X; 2410 if (!no_init && con_out_ours == con_out) 2411 SetConsoleScreenBufferSize(con_out, size); 2412 pos_init(); 2413 screen_size_changed(); 2414 screen_trashed(); 2415 } 2416 #endif 2417 } 2418 2419 /* 2420 * Goto a specific line on the screen. 2421 */ 2422 public void goto_line(int sindex) 2423 { 2424 assert_interactive(); 2425 #if !MSDOS_COMPILER 2426 ltputs(ltgoto(sc_move, 0, sindex), 1, putchr); 2427 #else 2428 flush(); 2429 _settextposition(sindex+1, 1); 2430 #endif 2431 } 2432 2433 #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC 2434 /* 2435 * Create an alternate screen which is all white. 2436 * This screen is used to create a "flash" effect, by displaying it 2437 * briefly and then switching back to the normal screen. 2438 * {{ Yuck! There must be a better way to get a visual bell. }} 2439 */ 2440 static void create_flash(void) 2441 { 2442 #if MSDOS_COMPILER==MSOFTC 2443 struct videoconfig w; 2444 char *blanks; 2445 int row, col; 2446 2447 _getvideoconfig(&w); 2448 videopages = w.numvideopages; 2449 if (videopages < 2) 2450 { 2451 at_enter(AT_STANDOUT); 2452 at_exit(); 2453 } else 2454 { 2455 _setactivepage(1); 2456 at_enter(AT_STANDOUT); 2457 blanks = (char *) ecalloc(w.numtextcols, sizeof(char)); 2458 for (col = 0; col < w.numtextcols; col++) 2459 blanks[col] = ' '; 2460 for (row = w.numtextrows; row > 0; row--) 2461 _outmem(blanks, w.numtextcols); 2462 _setactivepage(0); 2463 _setvisualpage(0); 2464 free(blanks); 2465 at_exit(); 2466 } 2467 #else 2468 #if MSDOS_COMPILER==BORLANDC 2469 int n; 2470 2471 whitescreen = (unsigned short *) 2472 malloc(sc_width * sc_height * sizeof(short)); 2473 if (whitescreen == NULL) 2474 return; 2475 for (n = 0; n < sc_width * sc_height; n++) 2476 whitescreen[n] = 0x7020; 2477 #endif 2478 #endif 2479 flash_created = 1; 2480 } 2481 #endif /* MSDOS_COMPILER */ 2482 2483 /* 2484 * Output the "visual bell", if there is one. 2485 */ 2486 public void vbell(void) 2487 { 2488 if (no_vbell) 2489 return; 2490 #if !MSDOS_COMPILER 2491 if (*sc_visual_bell == '\0') 2492 return; 2493 ltputs(sc_visual_bell, sc_height, putchr); 2494 #else 2495 #if MSDOS_COMPILER==DJGPPC 2496 ScreenVisualBell(); 2497 #else 2498 #if MSDOS_COMPILER==MSOFTC 2499 /* 2500 * Create a flash screen on the second video page. 2501 * Switch to that page, then switch back. 2502 */ 2503 if (!flash_created) 2504 create_flash(); 2505 if (videopages < 2) 2506 return; 2507 _setvisualpage(1); 2508 delay(100); 2509 _setvisualpage(0); 2510 #else 2511 #if MSDOS_COMPILER==BORLANDC 2512 unsigned short *currscreen; 2513 2514 /* 2515 * Get a copy of the current screen. 2516 * Display the flash screen. 2517 * Then restore the old screen. 2518 */ 2519 if (!flash_created) 2520 create_flash(); 2521 if (whitescreen == NULL) 2522 return; 2523 currscreen = (unsigned short *) 2524 malloc(sc_width * sc_height * sizeof(short)); 2525 if (currscreen == NULL) return; 2526 gettext(1, 1, sc_width, sc_height, currscreen); 2527 puttext(1, 1, sc_width, sc_height, whitescreen); 2528 delay(100); 2529 puttext(1, 1, sc_width, sc_height, currscreen); 2530 free(currscreen); 2531 #else 2532 #if MSDOS_COMPILER==WIN32C 2533 /* paint screen with an inverse color */ 2534 lclear(); 2535 2536 /* leave it displayed for 100 msec. */ 2537 Sleep(100); 2538 2539 /* restore with a redraw */ 2540 repaint(); 2541 #endif 2542 #endif 2543 #endif 2544 #endif 2545 #endif 2546 } 2547 2548 /* 2549 * Make a noise. 2550 */ 2551 static void lbeep(void) 2552 { 2553 #if !MSDOS_COMPILER 2554 putchr(CONTROL('G')); 2555 #else 2556 #if MSDOS_COMPILER==WIN32C 2557 MessageBeep(0); 2558 #else 2559 write(1, "\7", 1); 2560 #endif 2561 #endif 2562 } 2563 2564 /* 2565 * Ring the terminal bell. 2566 */ 2567 public void lbell(void) 2568 { 2569 if (quiet == VERY_QUIET) 2570 vbell(); 2571 else 2572 lbeep(); 2573 } 2574 2575 /* 2576 * Clear the screen. 2577 */ 2578 public void lclear(void) 2579 { 2580 assert_interactive(); 2581 suspend_screen(); 2582 #if !MSDOS_COMPILER 2583 ltputs(sc_clear, sc_height, putchr); 2584 #else 2585 flush(); 2586 #if MSDOS_COMPILER==WIN32C 2587 win32_clear(); 2588 #else 2589 _clearscreen(_GCLEARSCREEN); 2590 #endif 2591 #endif 2592 } 2593 2594 /* 2595 * Clear from the cursor to the end of the cursor's line. 2596 * {{ This must not move the cursor. }} 2597 */ 2598 public void clear_eol(void) 2599 { 2600 /* assert_interactive();*/ 2601 #if !MSDOS_COMPILER 2602 ltputs(sc_eol_clear, 1, putchr); 2603 #else 2604 #if MSDOS_COMPILER==MSOFTC 2605 short top, left; 2606 short bot, right; 2607 struct rccoord tpos; 2608 2609 flush(); 2610 /* 2611 * Save current state. 2612 */ 2613 tpos = _gettextposition(); 2614 _gettextwindow(&top, &left, &bot, &right); 2615 /* 2616 * Set a temporary window to the current line, 2617 * from the cursor's position to the right edge of the screen. 2618 * Then clear that window. 2619 */ 2620 _settextwindow(tpos.row, tpos.col, tpos.row, sc_width); 2621 _clearscreen(_GWINDOW); 2622 /* 2623 * Restore state. 2624 */ 2625 _settextwindow(top, left, bot, right); 2626 _settextposition(tpos.row, tpos.col); 2627 #else 2628 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 2629 flush(); 2630 clreol(); 2631 #else 2632 #if MSDOS_COMPILER==WIN32C 2633 DWORD nchars; 2634 COORD cpos; 2635 CONSOLE_SCREEN_BUFFER_INFO scr; 2636 2637 flush(); 2638 memset(&scr, 0, sizeof(scr)); 2639 GetConsoleScreenBufferInfo(con_out, &scr); 2640 cpos.X = scr.dwCursorPosition.X; 2641 cpos.Y = scr.dwCursorPosition.Y; 2642 curr_attr = MAKEATTR(nm_fg_color, nm_bg_color); 2643 FillConsoleOutputAttribute(con_out, curr_attr, 2644 scr.dwSize.X - cpos.X, cpos, &nchars); 2645 FillConsoleOutputCharacter(con_out, ' ', 2646 scr.dwSize.X - cpos.X, cpos, &nchars); 2647 #endif 2648 #endif 2649 #endif 2650 #endif 2651 } 2652 2653 /* 2654 * Clear the current line. 2655 * Clear the screen if there's off-screen memory below the display. 2656 */ 2657 static void clear_eol_bot(void) 2658 { 2659 assert_interactive(); 2660 #if MSDOS_COMPILER 2661 clear_eol(); 2662 #else 2663 if (below_mem) 2664 ltputs(sc_eos_clear, 1, putchr); 2665 else 2666 ltputs(sc_eol_clear, 1, putchr); 2667 #endif 2668 } 2669 2670 /* 2671 * Clear the bottom line of the display. 2672 * Leave the cursor at the beginning of the bottom line. 2673 */ 2674 public void clear_bot(void) 2675 { 2676 /* 2677 * If we're in a non-normal attribute mode, temporarily exit 2678 * the mode while we do the clear. Some terminals fill the 2679 * cleared area with the current attribute. 2680 */ 2681 if (oldbot) 2682 lower_left(); 2683 else 2684 line_left(); 2685 2686 if (attrmode == AT_NORMAL) 2687 clear_eol_bot(); 2688 else 2689 { 2690 int saved_attrmode = attrmode; 2691 2692 at_exit(); 2693 clear_eol_bot(); 2694 at_enter(saved_attrmode); 2695 } 2696 } 2697 2698 /* 2699 * Enable or disable bracketed paste mode. 2700 * When enabled, the terminal sends an "open bracket" sequence 2701 * before pasted content and "close bracket" after it. 2702 */ 2703 public void init_bracketed_paste(void) 2704 { 2705 #if !MSDOS_COMPILER 2706 ltputs(sc_s_bracketed_paste, 1, putchr); 2707 #endif 2708 } 2709 2710 public void deinit_bracketed_paste(void) 2711 { 2712 #if !MSDOS_COMPILER 2713 ltputs(sc_e_bracketed_paste, 1, putchr); 2714 #endif 2715 } 2716 2717 /* 2718 * Color string may be "x[y]" where x and y are 4-bit color chars, 2719 * or "N[.M]" where N and M are decimal integers> 2720 * Any of x,y,N,M may also be "-" to mean "unchanged". 2721 */ 2722 2723 /* 2724 * Parse a 4-bit color char. 2725 */ 2726 static int parse_color4(char ch) 2727 { 2728 switch (ch) 2729 { 2730 case 'k': return 0; 2731 case 'r': return CV_RED; 2732 case 'g': return CV_GREEN; 2733 case 'y': return CV_RED|CV_GREEN; 2734 case 'b': return CV_BLUE; 2735 case 'm': return CV_RED|CV_BLUE; 2736 case 'c': return CV_GREEN|CV_BLUE; 2737 case 'w': return CV_RED|CV_GREEN|CV_BLUE; 2738 case 'K': return 0|CV_BRIGHT; 2739 case 'R': return CV_RED|CV_BRIGHT; 2740 case 'G': return CV_GREEN|CV_BRIGHT; 2741 case 'Y': return CV_RED|CV_GREEN|CV_BRIGHT; 2742 case 'B': return CV_BLUE|CV_BRIGHT; 2743 case 'M': return CV_RED|CV_BLUE|CV_BRIGHT; 2744 case 'C': return CV_GREEN|CV_BLUE|CV_BRIGHT; 2745 case 'W': return CV_RED|CV_GREEN|CV_BLUE|CV_BRIGHT; 2746 case '-': return CV_NOCHANGE; 2747 default: return CV_ERROR; 2748 } 2749 } 2750 2751 /* 2752 * Parse a color as a decimal integer. 2753 */ 2754 static int parse_color6(constant char **ps) 2755 { 2756 if (**ps == '-') 2757 { 2758 (*ps)++; 2759 return CV_NOCHANGE; 2760 } else 2761 { 2762 constant char *os = *ps; 2763 int color = lstrtoic(os, ps, 10); 2764 if (color < 0 || *ps == os) 2765 return CV_ERROR; 2766 return color; 2767 } 2768 } 2769 2770 /* 2771 * Parse a color pair and return the foreground/background/attribute values. 2772 * Return type of color specifier: 2773 * CV_4BIT: fg/bg values are OR of CV_{RGB} bits. 2774 * CV_6BIT: fg/bg values are integers entered by user. 2775 */ 2776 public COLOR_TYPE parse_color(constant char *str, mutable int *p_fg, mutable int *p_bg, mutable CHAR_ATTR *p_cattr) 2777 { 2778 int fg; 2779 int bg = CV_ERROR; 2780 CHAR_ATTR cattr = CATTR_NULL; 2781 COLOR_TYPE type = CT_NULL; 2782 2783 if (str == NULL || *str == '\0') 2784 return CT_NULL; 2785 if (*str == '+') 2786 str++; /* ignore leading + */ 2787 2788 fg = parse_color4(*str); 2789 if (fg != CV_ERROR) 2790 { 2791 if (str[1] == '\0' || strchr("*~_&dsul", str[1]) != NULL) 2792 { 2793 bg = CV_NOCHANGE; 2794 str++; /* skip the fg char */ 2795 } else 2796 { 2797 bg = parse_color4(str[1]); 2798 if (bg != CV_ERROR) 2799 str += 2; /* skip both fg and bg chars */ 2800 } 2801 } 2802 if (fg != CV_ERROR && bg != CV_ERROR) 2803 type = CT_4BIT; 2804 else 2805 { 2806 fg = (*str == '.') ? CV_NOCHANGE : parse_color6(&str); 2807 if (fg != CV_ERROR) 2808 { 2809 if (*str != '.') 2810 bg = CV_NOCHANGE; 2811 else 2812 { 2813 str++; /* skip the dot */ 2814 bg = parse_color6(&str); 2815 } 2816 } 2817 if (fg != CV_ERROR && bg != CV_ERROR) 2818 type = CT_6BIT; 2819 } 2820 if (type != CT_NULL) 2821 { 2822 for (;; str++) 2823 { 2824 if (*str == '*' || *str == 'd') 2825 cattr |= CATTR_BOLD; 2826 else if (*str == '~' || *str == 's') 2827 cattr |= CATTR_STANDOUT; 2828 else if (*str == '_' || *str == 'u') 2829 cattr |= CATTR_UNDERLINE; 2830 else if (*str == '&' || *str == 'l') /* can't use 'k' because of conflict with "black" */ 2831 cattr |= CATTR_BLINK; 2832 else 2833 break; 2834 } 2835 if (p_fg != NULL) *p_fg = fg; 2836 if (p_bg != NULL) *p_bg = bg; 2837 if (p_cattr != NULL) *p_cattr = cattr; 2838 } 2839 return type; 2840 } 2841 2842 #if !MSDOS_COMPILER 2843 2844 static int sgr_color(int color) 2845 { 2846 switch (color) 2847 { 2848 case 0: return 30; 2849 case CV_RED: return 31; 2850 case CV_GREEN: return 32; 2851 case CV_RED|CV_GREEN: return 33; 2852 case CV_BLUE: return 34; 2853 case CV_RED|CV_BLUE: return 35; 2854 case CV_GREEN|CV_BLUE: return 36; 2855 case CV_RED|CV_GREEN|CV_BLUE: return 37; 2856 2857 case CV_BRIGHT: return 90; 2858 case CV_RED|CV_BRIGHT: return 91; 2859 case CV_GREEN|CV_BRIGHT: return 92; 2860 case CV_RED|CV_GREEN|CV_BRIGHT: return 93; 2861 case CV_BLUE|CV_BRIGHT: return 94; 2862 case CV_RED|CV_BLUE|CV_BRIGHT: return 95; 2863 case CV_GREEN|CV_BLUE|CV_BRIGHT: return 96; 2864 case CV_RED|CV_GREEN|CV_BLUE|CV_BRIGHT: return 97; 2865 2866 default: return color; 2867 } 2868 } 2869 2870 static void tput_fmt(constant char *fmt, int color, int (*f_putc)(int)) 2871 { 2872 char buf[INT_STRLEN_BOUND(int)+16]; 2873 if (color == attrcolor) 2874 return; 2875 SNPRINTF1(buf, sizeof(buf), fmt, color); 2876 ltputs(buf, 1, f_putc); 2877 attrcolor = color; 2878 } 2879 2880 static void tput_char_cattr(CHAR_ATTR cattr, int (*f_putc)(int)) 2881 { 2882 if (cattr & CATTR_UNDERLINE) 2883 { 2884 ltputs(sc_u_in, 1, f_putc); 2885 attrbits |= AT_UNDERLINE; 2886 } 2887 if (cattr & CATTR_BOLD) 2888 { 2889 ltputs(sc_b_in, 1, f_putc); 2890 attrbits |= AT_BOLD; 2891 } 2892 if (cattr & CATTR_BLINK) 2893 { 2894 ltputs(sc_bl_in, 1, f_putc); 2895 attrbits |= AT_BLINK; 2896 } 2897 if (cattr & CATTR_STANDOUT) 2898 { 2899 ltputs(sc_s_in, 1, f_putc); 2900 attrbits |= AT_STANDOUT; 2901 } 2902 } 2903 2904 static void tput_color(constant char *str, int (*f_putc)(int)) 2905 { 2906 int fg; 2907 int bg; 2908 CHAR_ATTR cattr; 2909 2910 if (str != NULL && strcmp(str, "*") == 0) 2911 { 2912 /* Special case: reset to normal */ 2913 tput_fmt(ESCS"[m", -1, f_putc); 2914 return; 2915 } 2916 switch (parse_color(str, &fg, &bg, &cattr)) 2917 { 2918 case CT_4BIT: 2919 if (fg >= 0) 2920 tput_fmt(ESCS"[%dm", sgr_color(fg), f_putc); 2921 if (bg >= 0) 2922 tput_fmt(ESCS"[%dm", sgr_color(bg)+10, f_putc); 2923 tput_char_cattr(cattr, f_putc); 2924 break; 2925 case CT_6BIT: 2926 if (fg >= 0) 2927 tput_fmt(ESCS"[38;5;%dm", fg, f_putc); 2928 if (bg >= 0) 2929 tput_fmt(ESCS"[48;5;%dm", bg, f_putc); 2930 tput_char_cattr(cattr, f_putc); 2931 break; 2932 default: 2933 break; 2934 } 2935 } 2936 2937 static void tput_inmode(constant char *mode_str, int attr, int attr_bit, int (*f_putc)(int)) 2938 { 2939 constant char *color_str; 2940 if ((attr & attr_bit) == 0) 2941 return; 2942 color_str = get_color_map(attr_bit); 2943 if (color_str == NULL || *color_str == '\0' || *color_str == '+') 2944 { 2945 ltputs(mode_str, 1, f_putc); 2946 attrbits |= attr_bit; 2947 if (color_str == NULL || *color_str++ != '+') 2948 return; 2949 } 2950 /* Color overrides mode string */ 2951 tput_color(color_str, f_putc); 2952 } 2953 2954 static void tput_outmode(constant char *mode_str, int attr_bit, int (*f_putc)(int)) 2955 { 2956 if ((attrbits & attr_bit) == 0) 2957 return; 2958 ltputs(mode_str, 1, f_putc); 2959 attrbits &= ~attr_bit; 2960 } 2961 2962 #else /* MSDOS_COMPILER */ 2963 2964 #if MSDOS_COMPILER==WIN32C 2965 static lbool WIN32put_fmt(constant char *fmt, int color) 2966 { 2967 char buf[INT_STRLEN_BOUND(int)+16]; 2968 int len = (size_t) SNPRINTF1(buf, sizeof(buf), fmt, color); 2969 if (len > 0) 2970 WIN32textout(buf, (size_t) len); 2971 return TRUE; 2972 } 2973 2974 static void win_set_cattr(CHAR_ATTR cattr) 2975 { 2976 if (cattr & CATTR_UNDERLINE) 2977 WIN32textout(ESCS"[4m", 4); 2978 if (cattr & CATTR_BOLD) 2979 WIN32textout(ESCS"[1m", 4); 2980 if (cattr & CATTR_BLINK) 2981 WIN32textout(ESCS"[5m", 4); 2982 if (cattr & CATTR_STANDOUT) 2983 WIN32textout(ESCS"[7m", 4); 2984 } 2985 #endif 2986 2987 static lbool win_set_color(int attr) 2988 { 2989 int fg; 2990 int bg; 2991 CHAR_ATTR cattr; 2992 lbool out = FALSE; 2993 constant char *str = get_color_map(attr); 2994 if (str == NULL || str[0] == '\0') 2995 return FALSE; 2996 switch (parse_color(str, &fg, &bg, &cattr)) 2997 { 2998 case CT_4BIT: 2999 if (fg >= 0 && bg >= 0) 3000 { 3001 SETCOLORS(fg, bg); 3002 out = TRUE; 3003 } else if (fg >= 0) 3004 { 3005 SET_FG_COLOR(fg); 3006 out = TRUE; 3007 } else if (bg >= 0) 3008 { 3009 SET_BG_COLOR(bg); 3010 out = TRUE; 3011 } 3012 #if MSDOS_COMPILER==WIN32C 3013 if (vt_enabled) 3014 win_set_cattr(cattr); 3015 #endif 3016 break; 3017 #if MSDOS_COMPILER==WIN32C 3018 case CT_6BIT: 3019 if (vt_enabled) 3020 { 3021 if (fg > 0) 3022 out = WIN32put_fmt(ESCS"[38;5;%dm", fg); 3023 if (bg > 0) 3024 out = WIN32put_fmt(ESCS"[48;5;%dm", bg); 3025 win_set_cattr(cattr); 3026 } 3027 break; 3028 #endif 3029 default: 3030 break; 3031 } 3032 return out; 3033 } 3034 3035 #endif /* MSDOS_COMPILER */ 3036 3037 public void at_enter(int attr) 3038 { 3039 attr = apply_at_specials(attr); 3040 #if !MSDOS_COMPILER 3041 /* The one with the most priority is last. */ 3042 tput_inmode(sc_u_in, attr, AT_UNDERLINE, putchr); 3043 tput_inmode(sc_b_in, attr, AT_BOLD, putchr); 3044 tput_inmode(sc_bl_in, attr, AT_BLINK, putchr); 3045 /* Don't use standout and color at the same time. */ 3046 if (use_color && (attr & AT_COLOR)) 3047 tput_color(get_color_map(attr), putchr); 3048 else 3049 tput_inmode(sc_s_in, attr, AT_STANDOUT, putchr); 3050 #else 3051 flush(); 3052 /* The one with the most priority is first. */ 3053 if ((attr & AT_COLOR) && use_color) 3054 { 3055 win_set_color(attr); 3056 } else if (attr & AT_STANDOUT) 3057 { 3058 SETCOLORS(so_fg_color, so_bg_color); 3059 } else if (attr & AT_BLINK) 3060 { 3061 SETCOLORS(bl_fg_color, bl_bg_color); 3062 } else if (attr & AT_BOLD) 3063 { 3064 SETCOLORS(bo_fg_color, bo_bg_color); 3065 } else if (attr & AT_UNDERLINE) 3066 { 3067 SETCOLORS(ul_fg_color, ul_bg_color); 3068 } 3069 #endif 3070 attrmode = attr; 3071 } 3072 3073 public void at_exit(void) 3074 { 3075 #if !MSDOS_COMPILER 3076 /* Undo things in the reverse order we did them. */ 3077 tput_color("*", putchr); 3078 tput_outmode(sc_s_out, AT_STANDOUT, putchr); 3079 tput_outmode(sc_bl_out, AT_BLINK, putchr); 3080 tput_outmode(sc_b_out, AT_BOLD, putchr); 3081 tput_outmode(sc_u_out, AT_UNDERLINE, putchr); 3082 #else 3083 flush(); 3084 SETCOLORS(nm_fg_color, nm_bg_color); 3085 #endif 3086 attrmode = AT_NORMAL; 3087 } 3088 3089 public void at_switch(int attr) 3090 { 3091 int new_attrmode = apply_at_specials(attr); 3092 int ignore_modes = AT_ANSI; 3093 3094 if ((new_attrmode & ~ignore_modes) != (attrmode & ~ignore_modes)) 3095 { 3096 at_exit(); 3097 at_enter(attr); 3098 } 3099 } 3100 3101 public lbool is_at_equiv(int attr1, int attr2) 3102 { 3103 attr1 = apply_at_specials(attr1); 3104 attr2 = apply_at_specials(attr2); 3105 3106 return (attr1 == attr2); 3107 } 3108 3109 public int apply_at_specials(int attr) 3110 { 3111 if (attr & AT_BINARY) 3112 attr |= binattr; 3113 if (attr & AT_HILITE) 3114 attr |= AT_STANDOUT; 3115 attr &= ~(AT_BINARY|AT_HILITE); 3116 3117 return attr; 3118 } 3119 3120 /* 3121 * Output a plain backspace, without erasing the previous char. 3122 */ 3123 public void putbs(void) 3124 { 3125 if (termcap_debug) 3126 putstr("<bs>"); 3127 else 3128 { 3129 #if !MSDOS_COMPILER 3130 ltputs(sc_backspace, 1, putchr); 3131 #else 3132 int row, col; 3133 3134 flush(); 3135 { 3136 #if MSDOS_COMPILER==MSOFTC 3137 struct rccoord tpos; 3138 tpos = _gettextposition(); 3139 row = tpos.row; 3140 col = tpos.col; 3141 #else 3142 #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC 3143 row = wherey(); 3144 col = wherex(); 3145 #else 3146 #if MSDOS_COMPILER==WIN32C 3147 CONSOLE_SCREEN_BUFFER_INFO scr; 3148 GetConsoleScreenBufferInfo(con_out, &scr); 3149 row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1; 3150 col = scr.dwCursorPosition.X - scr.srWindow.Left + 1; 3151 #endif 3152 #endif 3153 #endif 3154 } 3155 if (col <= 1) 3156 return; 3157 _settextposition(row, col-1); 3158 #endif /* MSDOS_COMPILER */ 3159 } 3160 } 3161 3162 #if MSDOS_COMPILER==WIN32C 3163 3164 #define WIN32_MAX_REPEAT 3 3165 #define LAST_DOWN_COUNT 8 3166 static LWCHAR last_downs[LAST_DOWN_COUNT] = { 0 }; 3167 static int last_down_index = 0; 3168 static LWCHAR hi_surr = 0; 3169 3170 typedef struct XINPUT_RECORD { 3171 INPUT_RECORD ir; 3172 LWCHAR ichar; /* because ir...UnicodeChar is only 16 bits */ 3173 } XINPUT_RECORD; 3174 3175 typedef struct WIN32_CHAR { 3176 struct WIN32_CHAR *wc_next; 3177 int wc_ch; 3178 } WIN32_CHAR; 3179 3180 static WIN32_CHAR *win32_queue = NULL; 3181 3182 /* 3183 * Is the win32_queue nonempty? 3184 */ 3185 static lbool win32_queued_char(void) 3186 { 3187 return (win32_queue != NULL); 3188 } 3189 3190 /* 3191 * Push a char onto the back of the win32_queue. 3192 */ 3193 public void win32_enqueue(int ch) 3194 { 3195 WIN32_CHAR *wch = (WIN32_CHAR *) ecalloc(1, sizeof(WIN32_CHAR)); 3196 wch->wc_ch = ch; 3197 wch->wc_next = NULL; 3198 if (win32_queue == NULL) 3199 win32_queue = wch; 3200 else 3201 { 3202 WIN32_CHAR *pch; 3203 for (pch = win32_queue; pch->wc_next != NULL; pch = pch->wc_next) 3204 continue; 3205 pch->wc_next = wch; 3206 } 3207 } 3208 3209 /* 3210 * Push a char onto the front of the win32_queue. 3211 * Makes the next call to WIN32getch return ch. 3212 */ 3213 public void WIN32ungetch(int ch) 3214 { 3215 WIN32_CHAR *wch = (WIN32_CHAR *) ecalloc(1, sizeof(WIN32_CHAR)); 3216 wch->wc_ch = ch; 3217 wch->wc_next = win32_queue; 3218 win32_queue = wch; 3219 } 3220 3221 /* 3222 * Get a char from the front of the win32_queue. 3223 */ 3224 static int win32_get_queue(void) 3225 { 3226 WIN32_CHAR *wch = win32_queue; 3227 int ch = wch->wc_ch; 3228 win32_queue = wch->wc_next; 3229 free(wch); 3230 return ch; 3231 } 3232 3233 public void win32_clear_queue(void) 3234 { 3235 while (win32_queued_char()) 3236 (void) win32_get_queue(); 3237 } 3238 3239 /* 3240 * Handle a mouse input event. 3241 */ 3242 static lbool win32_mouse_event(XINPUT_RECORD *xip) 3243 { 3244 char b; 3245 3246 if (emouse == 0 || xip->ir.EventType != MOUSE_EVENT) 3247 return (FALSE); 3248 3249 /* Generate an X11 mouse sequence from the mouse event. */ 3250 /* TODO: switch to the 1006 protocol to allow specific-button-up reports */ 3251 switch (xip->ir.Event.MouseEvent.dwEventFlags) 3252 { 3253 case 0: /* press or release */ 3254 if (xip->ir.Event.MouseEvent.dwButtonState == 0) 3255 b = X11MOUSE_OFFSET + X11MOUSE_BUTTON_REL; 3256 else if (xip->ir.Event.MouseEvent.dwButtonState == 1) /* leftmost */ 3257 b = X11MOUSE_OFFSET + X11MOUSE_BUTTON1; 3258 else if (xip->ir.Event.MouseEvent.dwButtonState == 2) /* rightmost */ 3259 b = X11MOUSE_OFFSET + X11MOUSE_BUTTON3; 3260 else if (xip->ir.Event.MouseEvent.dwButtonState == 4) /* middle ("next-to-leftmost") */ 3261 b = X11MOUSE_OFFSET + X11MOUSE_BUTTON2; 3262 else /* don't bother to figure out what changed */ 3263 return (FALSE); 3264 break; 3265 case MOUSE_WHEELED: 3266 b = X11MOUSE_OFFSET + (((int)xip->ir.Event.MouseEvent.dwButtonState < 0) ? X11MOUSE_WHEEL_DOWN : X11MOUSE_WHEEL_UP); 3267 break; 3268 case MOUSE_MOVED: 3269 if (xip->ir.Event.MouseEvent.dwButtonState != 1) 3270 return (FALSE); 3271 /* Drag with left button down. */ 3272 b = X11MOUSE_OFFSET + X11MOUSE_DRAG; 3273 break; 3274 default: 3275 return (FALSE); 3276 } 3277 /* {{ TODO: change to X11 1006 format. }} */ 3278 win32_enqueue(ESC); 3279 win32_enqueue('['); 3280 win32_enqueue('M'); 3281 win32_enqueue(b); 3282 win32_enqueue(X11MOUSE_OFFSET + xip->ir.Event.MouseEvent.dwMousePosition.X + 1); 3283 win32_enqueue(X11MOUSE_OFFSET + xip->ir.Event.MouseEvent.dwMousePosition.Y + 1); 3284 return (TRUE); 3285 } 3286 3287 static void set_last_down(LWCHAR ch) 3288 { 3289 if (ch == 0) return; 3290 last_downs[last_down_index] = ch; 3291 if (++last_down_index >= LAST_DOWN_COUNT) 3292 last_down_index = 0; 3293 } 3294 3295 static LWCHAR *find_last_down(LWCHAR ch) 3296 { 3297 int i; 3298 for (i = 0; i < LAST_DOWN_COUNT; ++i) 3299 if (last_downs[i] == ch) 3300 return &last_downs[i]; 3301 return NULL; 3302 } 3303 3304 /* 3305 * Get an input char from an INPUT_RECORD and store in xip->ichar. 3306 * Handles surrogate chars, and KeyUp without previous corresponding KeyDown. 3307 */ 3308 static lbool win32_get_ichar(XINPUT_RECORD *xip) 3309 { 3310 LWCHAR ch = xip->ir.Event.KeyEvent.uChar.UnicodeChar; 3311 xip->ichar = ch; 3312 if (!is_ascii_char(ch)) 3313 { 3314 int is_down = xip->ir.Event.KeyEvent.bKeyDown; 3315 LWCHAR *last_down = find_last_down(ch); 3316 if (last_down == NULL) { /* key was up */ 3317 if (is_down) { /* key was up, now is down */ 3318 set_last_down(ch); 3319 } else { /* key up without previous down: pretend this is a down. */ 3320 xip->ir.Event.KeyEvent.bKeyDown = 1; 3321 } 3322 } else if (!is_down) { /* key was down, now is up */ 3323 *last_down = 0; /* use this last_down only once */ 3324 } 3325 3326 if (ch >= 0xD800 && ch < 0xDC00) { /* high surrogate */ 3327 hi_surr = 0x10000 + ((ch - 0xD800) << 10); 3328 return (FALSE); /* get next input, which should be the low surrogate */ 3329 } 3330 if (ch >= 0xDC00 && ch < 0xE000) { /* low surrogate */ 3331 xip->ichar = hi_surr + (ch - 0xDC00); 3332 hi_surr = 0; 3333 } 3334 } 3335 return (TRUE); 3336 } 3337 3338 /* 3339 * Handle a scan code (non-ASCII) key input. 3340 */ 3341 static lbool win32_scan_code(XINPUT_RECORD *xip) 3342 { 3343 int scan = -1; 3344 if (xip->ir.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) 3345 { 3346 switch (xip->ir.Event.KeyEvent.wVirtualScanCode) 3347 { 3348 case PCK_RIGHT: /* right arrow */ 3349 scan = PCK_CTL_RIGHT; 3350 break; 3351 case PCK_LEFT: /* left arrow */ 3352 scan = PCK_CTL_LEFT; 3353 break; 3354 case PCK_DELETE: /* delete */ 3355 scan = PCK_CTL_DELETE; 3356 break; 3357 case PCK_HOME: 3358 scan = PCK_CTL_HOME; 3359 break; 3360 case PCK_END: 3361 scan = PCK_CTL_END; 3362 break; 3363 } 3364 } else if (xip->ir.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED) 3365 { 3366 if (xip->ichar == '\t') 3367 scan = PCK_SHIFT_TAB; 3368 else 3369 { 3370 switch (xip->ir.Event.KeyEvent.wVirtualScanCode) 3371 { 3372 case PCK_RIGHT: 3373 scan = PCK_SHIFT_RIGHT; 3374 break; 3375 case PCK_LEFT: 3376 scan = PCK_SHIFT_LEFT; 3377 break; 3378 case PCK_HOME: 3379 scan = PCK_SHIFT_HOME; 3380 break; 3381 case PCK_END: 3382 scan = PCK_SHIFT_END; 3383 break; 3384 } 3385 } 3386 } 3387 if (scan < 0 && xip->ichar == 0) 3388 scan = xip->ir.Event.KeyEvent.wVirtualScanCode; 3389 if (scan < 0) 3390 return (FALSE); 3391 /* 3392 * An extended key returns a 2 byte sequence consisting of 3393 * a zero byte followed by the scan code. 3394 */ 3395 win32_enqueue('\0'); 3396 win32_enqueue(scan); 3397 return (TRUE); 3398 } 3399 3400 /* 3401 * Handle a key input event. 3402 */ 3403 static lbool win32_key_event(XINPUT_RECORD *xip, char *pch) 3404 { 3405 int repeat; 3406 char utf8[UTF8_MAX_LENGTH]; 3407 char *up; 3408 3409 if (xip->ir.EventType != KEY_EVENT || 3410 ((xip->ir.Event.KeyEvent.dwControlKeyState & (RIGHT_ALT_PRESSED|LEFT_CTRL_PRESSED)) == (RIGHT_ALT_PRESSED|LEFT_CTRL_PRESSED) && xip->ir.Event.KeyEvent.uChar.UnicodeChar == 0) || 3411 (xip->ir.Event.KeyEvent.wVirtualScanCode == 0 && xip->ir.Event.KeyEvent.uChar.UnicodeChar == 0) || 3412 xip->ir.Event.KeyEvent.wVirtualScanCode == PCK_CAPS_LOCK || 3413 xip->ir.Event.KeyEvent.wVirtualScanCode == PCK_NUM_LOCK || 3414 (xip->ir.Event.KeyEvent.wVirtualKeyCode == VK_MENU && xip->ir.Event.KeyEvent.uChar.UnicodeChar == 0) || 3415 xip->ir.Event.KeyEvent.wVirtualKeyCode == VK_KANJI || 3416 xip->ir.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT || 3417 xip->ir.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL) 3418 return (FALSE); 3419 3420 if (!win32_get_ichar(xip)) 3421 return (FALSE); 3422 if (!xip->ir.Event.KeyEvent.bKeyDown) 3423 return (FALSE); 3424 3425 /* 3426 * If caller wants to see an immediate (unqueued) ASCII char from the 3427 * keyboard, return it now. Otherwise queue the char for WIN32getch to read. 3428 */ 3429 if (pch != NULL && xip->ichar != '\0' && is_ascii_char(xip->ichar)) 3430 { 3431 *pch = (char) xip->ichar; 3432 return (TRUE); 3433 } 3434 3435 if (win32_scan_code(xip)) 3436 return (pch == NULL); 3437 3438 repeat = xip->ir.Event.KeyEvent.wRepeatCount; 3439 if (repeat > WIN32_MAX_REPEAT) 3440 repeat = WIN32_MAX_REPEAT; 3441 up = utf8; 3442 put_wchar(&up, xip->ichar); 3443 for (; repeat > 0; --repeat) 3444 { 3445 constant char *p; 3446 for (p = utf8; p < up; ++p) 3447 win32_enqueue((unsigned char) *p); 3448 } 3449 return (pch == NULL); 3450 } 3451 3452 /* 3453 * Handle a window input event. 3454 */ 3455 static lbool win32_window_event(XINPUT_RECORD *xip) 3456 { 3457 if (xip->ir.EventType != WINDOW_BUFFER_SIZE_EVENT) 3458 return (FALSE); 3459 win32_enqueue(READ_AGAIN); 3460 return (TRUE); 3461 } 3462 3463 /* 3464 * Determine whether an input character is waiting to be read. 3465 */ 3466 public lbool win32_kbhit2(char *pch) 3467 { 3468 XINPUT_RECORD xip; 3469 3470 if (pch == NULL && win32_queued_char()) 3471 return (TRUE); 3472 3473 for (;;) 3474 { 3475 DWORD nread; 3476 DWORD console_input_mode; 3477 /* 3478 * When an input pipe closes, cmd may reset the console mode, 3479 * so set the mode every time we read input. 3480 */ 3481 if (GetConsoleMode(tty, &console_input_mode) && console_input_mode != curr_console_input_mode) 3482 SetConsoleMode(tty, curr_console_input_mode); 3483 PeekConsoleInputW(tty, &xip.ir, 1, &nread); 3484 if (nread == 0) 3485 return (FALSE); 3486 ReadConsoleInputW(tty, &xip.ir, 1, &nread); 3487 if (nread == 0) 3488 return (FALSE); 3489 if (win32_key_event(&xip, pch)) 3490 return (TRUE); 3491 if (win32_mouse_event(&xip) || win32_window_event(&xip)) 3492 return (pch == NULL); 3493 } 3494 } 3495 3496 public lbool win32_kbhit(void) 3497 { 3498 return win32_kbhit2(NULL); 3499 } 3500 3501 /* 3502 * Read a character from the keyboard. 3503 */ 3504 public int WIN32getch(void) 3505 { 3506 while (!win32_kbhit()) 3507 { 3508 Sleep(20); 3509 if (ABORT_SIGS()) 3510 return ('\003'); 3511 } 3512 return (win32_get_queue()); 3513 } 3514 3515 public void win32_getch_clear(void) 3516 { 3517 while (win32_kbhit()) 3518 (void) WIN32getch(); 3519 } 3520 3521 #endif /* MSDOS_COMPILER==WIN32C */ 3522 3523 #if MSDOS_COMPILER 3524 /* 3525 */ 3526 public void WIN32setcolors(int fg, int bg) 3527 { 3528 SETCOLORS(fg, bg); 3529 } 3530 3531 /* 3532 */ 3533 public void WIN32textout(constant char *text, size_t len) 3534 { 3535 #if MSDOS_COMPILER==WIN32C 3536 DWORD written; 3537 if (utf_mode == 2) 3538 { 3539 /* 3540 * We've got UTF-8 text in a non-UTF-8 console. Convert it to 3541 * wide and use WriteConsoleW. 3542 * Biggest input len is OUTBUF_SIZE of obuf from win_flush, 3543 * which is also the biggest output count if it's ASCII. 3544 * "static" wtext is not a state - only avoid 16K on stack. 3545 */ 3546 static WCHAR wtext[OUTBUF_SIZE]; 3547 len = MultiByteToWideChar(CP_UTF8, 0, text, len, wtext, countof(wtext)); 3548 WriteConsoleW(con_out, wtext, len, &written, NULL); 3549 } else 3550 WriteConsole(con_out, text, (DWORD) len, &written, NULL); 3551 #else 3552 char buf[2048]; 3553 if (len >= sizeof(buf)) 3554 len = sizeof(buf) - 1; 3555 memcpy(buf, text, len); 3556 buf[len] = 0; 3557 cputs(buf); 3558 #endif 3559 } 3560 #endif 3561