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