Annotation of src/usr.bin/less/screen.c, Revision 1.12
1.1 etheisen 1: /*
1.11 millert 2: * Copyright (C) 1984-2002 Mark Nudelman
1.1 etheisen 3: *
1.11 millert 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.
1.1 etheisen 6: *
1.11 millert 7: * For more information about less, or for information on how to
8: * contact the author, see the README file.
1.1 etheisen 9: */
10:
11:
12: /*
13: * Routines which deal with the characteristics of the terminal.
14: * Uses termcap to be as terminal-independent as possible.
15: */
16:
17: #include "less.h"
18: #include "cmd.h"
19:
1.11 millert 20: #if MSDOS_COMPILER
21: #include "pckeys.h"
22: #if MSDOS_COMPILER==MSOFTC
23: #include <graph.h>
24: #else
25: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
26: #include <conio.h>
27: #if MSDOS_COMPILER==DJGPPC
28: #include <pc.h>
29: extern int fd0;
30: #endif
31: #else
32: #if MSDOS_COMPILER==WIN32C
33: #include <windows.h>
34: #endif
35: #endif
36: #endif
37: #include <time.h>
38:
39: #else
40:
1.1 etheisen 41: #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
42: #include <termios.h>
1.12 ! david 43: #if HAVE_SYS_IOCTL_H
1.1 etheisen 44: #include <sys/ioctl.h>
45: #endif
46: #else
47: #if HAVE_TERMIO_H
48: #include <termio.h>
49: #else
1.11 millert 50: #if HAVE_SGSTAT_H
51: #include <sgstat.h>
52: #else
1.1 etheisen 53: #include <sgtty.h>
1.11 millert 54: #endif
1.1 etheisen 55: #if HAVE_SYS_IOCTL_H && (defined(TIOCGWINSZ) || defined(TCGETA) || defined(TIOCGETP) || defined(WIOCGETD))
56: #include <sys/ioctl.h>
57: #endif
58: #endif
59: #endif
1.11 millert 60:
1.1 etheisen 61: #if HAVE_TERMCAP_H
62: #include <termcap.h>
63: #endif
1.11 millert 64: #ifdef _OSK
65: #include <signal.h>
66: #endif
67: #if OS2
1.1 etheisen 68: #include <sys/signal.h>
1.11 millert 69: #include "pckeys.h"
1.1 etheisen 70: #endif
71: #if HAVE_SYS_STREAM_H
72: #include <sys/stream.h>
73: #endif
74: #if HAVE_SYS_PTEM_H
75: #include <sys/ptem.h>
76: #endif
77:
1.11 millert 78: #endif /* MSDOS_COMPILER */
79:
80: /*
81: * Check for broken termios package that forces you to manually
82: * set the line discipline.
83: */
84: #ifdef __ultrix__
85: #define MUST_SET_LINE_DISCIPLINE 1
86: #else
87: #define MUST_SET_LINE_DISCIPLINE 0
88: #endif
89:
1.1 etheisen 90: #if OS2
91: #define DEFAULT_TERM "ansi"
1.11 millert 92: static char *windowid;
1.1 etheisen 93: #else
94: #define DEFAULT_TERM "unknown"
95: #endif
96:
1.11 millert 97: #if MSDOS_COMPILER==MSOFTC
98: static int videopages;
99: static long msec_loops;
100: static int flash_created = 0;
101: #define SETCOLORS(fg,bg) { _settextcolor(fg); _setbkcolor(bg); }
102: #endif
103:
104: #if MSDOS_COMPILER==BORLANDC
105: static unsigned short *whitescreen;
106: static int flash_created = 0;
107: #endif
108: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
109: #define _settextposition(y,x) gotoxy(x,y)
110: #define _clearscreen(m) clrscr()
111: #define _outtext(s) cputs(s)
112: #define SETCOLORS(fg,bg) { textcolor(fg); textbackground(bg); }
113: extern int sc_height;
114: #endif
115:
116: #if MSDOS_COMPILER==WIN32C
117: struct keyRecord
118: {
119: int ascii;
120: int scan;
121: } currentKey;
122:
123: static int keyCount = 0;
124: static WORD curr_attr;
125: static int pending_scancode = 0;
126: static WORD *whitescreen;
127:
128: static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */
129: static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */
130: HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */
131:
132: extern int quitting;
133: static void win32_init_term();
134: static void win32_deinit_term();
135:
136: #define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY)
137: #define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY)
138: #define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4)))
139: #define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); \
140: if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \
141: error("SETCOLORS failed"); }
142: #endif
143:
144: #if MSDOS_COMPILER
145: public int nm_fg_color; /* Color of normal text */
146: public int nm_bg_color;
147: public int bo_fg_color; /* Color of bold text */
148: public int bo_bg_color;
149: public int ul_fg_color; /* Color of underlined text */
150: public int ul_bg_color;
151: public int so_fg_color; /* Color of standout text */
152: public int so_bg_color;
153: public int bl_fg_color; /* Color of blinking text */
154: public int bl_bg_color;
155: static int sy_fg_color; /* Color of system text (before less) */
156: static int sy_bg_color;
157:
158: #else
159:
1.1 etheisen 160: /*
161: * Strings passed to tputs() to do various terminal functions.
162: */
163: static char
164: *sc_pad, /* Pad string */
165: *sc_home, /* Cursor home */
166: *sc_addline, /* Add line, scroll down following lines */
167: *sc_lower_left, /* Cursor to last line, first column */
168: *sc_move, /* General cursor positioning */
169: *sc_clear, /* Clear screen */
170: *sc_eol_clear, /* Clear to end of line */
171: *sc_eos_clear, /* Clear to end of screen */
172: *sc_s_in, /* Enter standout (highlighted) mode */
173: *sc_s_out, /* Exit standout mode */
174: *sc_u_in, /* Enter underline mode */
175: *sc_u_out, /* Exit underline mode */
176: *sc_b_in, /* Enter bold mode */
177: *sc_b_out, /* Exit bold mode */
178: *sc_bl_in, /* Enter blink mode */
179: *sc_bl_out, /* Exit blink mode */
180: *sc_visual_bell, /* Visual bell (flash screen) sequence */
181: *sc_backspace, /* Backspace cursor */
182: *sc_s_keypad, /* Start keypad mode */
183: *sc_e_keypad, /* End keypad mode */
184: *sc_init, /* Startup terminal initialization */
185: *sc_deinit; /* Exit terminal de-initialization */
1.11 millert 186: #endif
1.1 etheisen 187:
188: static int init_done = 0;
189:
190: public int auto_wrap; /* Terminal does \r\n when write past margin */
191: public int ignaw; /* Terminal ignores \n immediately after wrap */
192: public int erase_char, kill_char; /* The user's erase and line-kill chars */
193: public int werase_char; /* The user's word-erase char */
194: public int sc_width, sc_height; /* Height & width of screen */
195: public int bo_s_width, bo_e_width; /* Printing width of boldface seq */
196: public int ul_s_width, ul_e_width; /* Printing width of underline seq */
197: public int so_s_width, so_e_width; /* Printing width of standout seq */
198: public int bl_s_width, bl_e_width; /* Printing width of blink seq */
199: public int above_mem, below_mem; /* Memory retained above/below screen */
200: public int can_goto_line; /* Can move cursor to any line */
1.11 millert 201: public int clear_bg; /* Clear fills with background color */
202: public int missing_cap = 0; /* Some capability is missing */
203:
204: static int attrmode = AT_NORMAL;
1.1 etheisen 205:
1.11 millert 206: #if !MSDOS_COMPILER
1.1 etheisen 207: static char *cheaper();
1.11 millert 208: static void tmodes();
209: #endif
1.1 etheisen 210:
211: /*
212: * These two variables are sometimes defined in,
213: * and needed by, the termcap library.
214: */
215: #if MUST_DEFINE_OSPEED
216: extern short ospeed; /* Terminal output baud rate */
217: extern char PC; /* Pad character */
218: #endif
1.11 millert 219: #ifdef _OSK
220: short ospeed;
221: char PC_, *UP, *BC;
222: #endif
1.1 etheisen 223:
224: extern int quiet; /* If VERY_QUIET, use visual bell for bell */
1.11 millert 225: extern int no_back_scroll;
1.1 etheisen 226: extern int swindow;
227: extern int no_init;
1.11 millert 228: extern int no_keypad;
229: extern int sigs;
230: extern int wscroll;
231: extern int screen_trashed;
232: extern int tty;
1.2 etheisen 233: extern int quit_at_eof;
1.11 millert 234: extern int ismore;
1.1 etheisen 235: #if HILITE_SEARCH
236: extern int hilite_search;
237: #endif
238:
239: extern char *tgetstr();
240: extern char *tgoto();
241:
242:
243: /*
244: * Change terminal to "raw mode", or restore to "normal" mode.
245: * "Raw mode" means
246: * 1. An outstanding read will complete on receipt of a single keystroke.
247: * 2. Input is not echoed.
248: * 3. On output, \n is mapped to \r\n.
249: * 4. \t is NOT expanded into spaces.
250: * 5. Signal-causing characters such as ctrl-C (interrupt),
251: * etc. are NOT disabled.
252: * It doesn't matter whether an input \n is mapped to \r, or vice versa.
253: */
254: public void
255: raw_mode(on)
256: int on;
257: {
258: static int curr_on = 0;
259:
260: if (on == curr_on)
261: return;
262: #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
263: {
264: struct termios s;
265: static struct termios save_term;
1.11 millert 266: static int saved_term = 0;
1.1 etheisen 267:
268: if (on)
269: {
270: /*
271: * Get terminal modes.
272: */
1.11 millert 273: tcgetattr(tty, &s);
1.1 etheisen 274:
275: /*
276: * Save modes and set certain variables dependent on modes.
277: */
1.11 millert 278: if (!saved_term)
279: {
280: save_term = s;
281: saved_term = 1;
282: }
1.1 etheisen 283: #if HAVE_OSPEED
284: switch (cfgetospeed(&s))
285: {
286: #ifdef B0
287: case B0: ospeed = 0; break;
288: #endif
289: #ifdef B50
290: case B50: ospeed = 1; break;
291: #endif
292: #ifdef B75
293: case B75: ospeed = 2; break;
294: #endif
295: #ifdef B110
296: case B110: ospeed = 3; break;
297: #endif
298: #ifdef B134
299: case B134: ospeed = 4; break;
300: #endif
301: #ifdef B150
302: case B150: ospeed = 5; break;
303: #endif
304: #ifdef B200
305: case B200: ospeed = 6; break;
306: #endif
307: #ifdef B300
308: case B300: ospeed = 7; break;
309: #endif
310: #ifdef B600
311: case B600: ospeed = 8; break;
312: #endif
313: #ifdef B1200
314: case B1200: ospeed = 9; break;
315: #endif
316: #ifdef B1800
317: case B1800: ospeed = 10; break;
318: #endif
319: #ifdef B2400
320: case B2400: ospeed = 11; break;
321: #endif
322: #ifdef B4800
323: case B4800: ospeed = 12; break;
324: #endif
325: #ifdef B9600
326: case B9600: ospeed = 13; break;
327: #endif
328: #ifdef EXTA
329: case EXTA: ospeed = 14; break;
330: #endif
331: #ifdef EXTB
332: case EXTB: ospeed = 15; break;
333: #endif
334: #ifdef B57600
335: case B57600: ospeed = 16; break;
336: #endif
337: #ifdef B115200
338: case B115200: ospeed = 17; break;
339: #endif
340: default: ;
341: }
342: #endif
343: erase_char = s.c_cc[VERASE];
344: kill_char = s.c_cc[VKILL];
345: #ifdef VWERASE
346: werase_char = s.c_cc[VWERASE];
347: #else
1.11 millert 348: werase_char = CONTROL('W');
1.1 etheisen 349: #endif
350:
351: /*
352: * Set the modes to the way we want them.
353: */
354: s.c_lflag &= ~(0
355: #ifdef ICANON
356: | ICANON
357: #endif
358: #ifdef ECHO
359: | ECHO
360: #endif
361: #ifdef ECHOE
362: | ECHOE
363: #endif
364: #ifdef ECHOK
365: | ECHOK
366: #endif
367: #if ECHONL
368: | ECHONL
369: #endif
370: );
371:
372: s.c_oflag |= (0
1.11 millert 373: #ifdef OXTABS
374: | OXTABS
1.1 etheisen 375: #else
376: #ifdef TAB3
377: | TAB3
378: #else
1.11 millert 379: #ifdef XTABS
380: | XTABS
1.1 etheisen 381: #endif
382: #endif
383: #endif
384: #ifdef OPOST
385: | OPOST
386: #endif
387: #ifdef ONLCR
388: | ONLCR
389: #endif
390: );
391:
392: s.c_oflag &= ~(0
393: #ifdef ONOEOT
394: | ONOEOT
395: #endif
396: #ifdef OCRNL
397: | OCRNL
398: #endif
399: #ifdef ONOCR
400: | ONOCR
401: #endif
402: #ifdef ONLRET
403: | ONLRET
404: #endif
405: );
406: s.c_cc[VMIN] = 1;
407: s.c_cc[VTIME] = 0;
1.11 millert 408: #ifdef VLNEXT
409: s.c_cc[VLNEXT] = 0;
410: #endif
411: #ifdef VDSUSP
412: s.c_cc[VDSUSP] = 0;
413: #endif
414: #if MUST_SET_LINE_DISCIPLINE
415: /*
416: * System's termios is broken; need to explicitly
417: * request TERMIODISC line discipline.
418: */
419: s.c_line = TERMIODISC;
420: #endif
1.1 etheisen 421: } else
422: {
423: /*
424: * Restore saved modes.
425: */
426: s = save_term;
427: }
1.11 millert 428: #if HAVE_FSYNC
429: fsync(tty);
430: #endif
431: tcsetattr(tty, TCSADRAIN, &s);
432: #if MUST_SET_LINE_DISCIPLINE
433: if (!on)
434: {
435: /*
436: * Broken termios *ignores* any line discipline
437: * except TERMIODISC. A different old line discipline
438: * is therefore not restored, yet. Restore the old
439: * line discipline by hand.
440: */
441: ioctl(tty, TIOCSETD, &save_term.c_line);
442: }
443: #endif
1.1 etheisen 444: }
445: #else
446: #ifdef TCGETA
447: {
448: struct termio s;
449: static struct termio save_term;
1.11 millert 450: static int saved_term = 0;
1.1 etheisen 451:
452: if (on)
453: {
454: /*
455: * Get terminal modes.
456: */
1.11 millert 457: ioctl(tty, TCGETA, &s);
1.1 etheisen 458:
459: /*
460: * Save modes and set certain variables dependent on modes.
461: */
1.11 millert 462: if (!saved_term)
463: {
464: save_term = s;
465: saved_term = 1;
466: }
1.1 etheisen 467: #if HAVE_OSPEED
468: ospeed = s.c_cflag & CBAUD;
469: #endif
470: erase_char = s.c_cc[VERASE];
471: kill_char = s.c_cc[VKILL];
472: #ifdef VWERASE
473: werase_char = s.c_cc[VWERASE];
474: #else
1.11 millert 475: werase_char = CONTROL('W');
1.1 etheisen 476: #endif
477:
478: /*
479: * Set the modes to the way we want them.
480: */
481: s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL);
482: s.c_oflag |= (OPOST|ONLCR|TAB3);
483: s.c_oflag &= ~(OCRNL|ONOCR|ONLRET);
484: s.c_cc[VMIN] = 1;
485: s.c_cc[VTIME] = 0;
486: } else
487: {
488: /*
489: * Restore saved modes.
490: */
491: s = save_term;
492: }
1.11 millert 493: ioctl(tty, TCSETAW, &s);
1.1 etheisen 494: }
495: #else
1.11 millert 496: #ifdef TIOCGETP
1.1 etheisen 497: {
498: struct sgttyb s;
499: static struct sgttyb save_term;
1.11 millert 500: static int saved_term = 0;
1.1 etheisen 501:
502: if (on)
503: {
504: /*
505: * Get terminal modes.
506: */
1.11 millert 507: ioctl(tty, TIOCGETP, &s);
1.1 etheisen 508:
509: /*
510: * Save modes and set certain variables dependent on modes.
511: */
1.11 millert 512: if (!saved_term)
513: {
514: save_term = s;
515: saved_term = 1;
516: }
1.1 etheisen 517: #if HAVE_OSPEED
518: ospeed = s.sg_ospeed;
519: #endif
520: erase_char = s.sg_erase;
521: kill_char = s.sg_kill;
1.11 millert 522: werase_char = CONTROL('W');
1.1 etheisen 523:
524: /*
525: * Set the modes to the way we want them.
526: */
527: s.sg_flags |= CBREAK;
528: s.sg_flags &= ~(ECHO|XTABS);
529: } else
530: {
531: /*
532: * Restore saved modes.
533: */
534: s = save_term;
535: }
1.11 millert 536: ioctl(tty, TIOCSETN, &s);
537: }
538: #else
539: #ifdef _OSK
540: {
541: struct sgbuf s;
542: static struct sgbuf save_term;
543: static int saved_term = 0;
544:
545: if (on)
546: {
547: /*
548: * Get terminal modes.
549: */
550: _gs_opt(tty, &s);
551:
552: /*
553: * Save modes and set certain variables dependent on modes.
554: */
555: if (!saved_term)
556: {
557: save_term = s;
558: saved_term = 1;
559: }
560: erase_char = s.sg_bspch;
561: kill_char = s.sg_dlnch;
562: werase_char = CONTROL('W');
563:
564: /*
565: * Set the modes to the way we want them.
566: */
567: s.sg_echo = 0;
568: s.sg_eofch = 0;
569: s.sg_pause = 0;
570: s.sg_psch = 0;
571: } else
572: {
573: /*
574: * Restore saved modes.
575: */
576: s = save_term;
577: }
578: _ss_opt(tty, &s);
1.1 etheisen 579: }
1.11 millert 580: #else
581: /* MS-DOS, Windows, or OS2 */
582: #if OS2
583: /* OS2 */
584: LSIGNAL(SIGINT, SIG_IGN);
585: #endif
586: erase_char = '\b';
587: #if MSDOS_COMPILER==DJGPPC
588: kill_char = CONTROL('U');
589: /*
590: * So that when we shell out or run another program, its
591: * stdin is in cooked mode. We do not switch stdin to binary
592: * mode if fd0 is zero, since that means we were called before
593: * tty was reopened in open_getchr, in which case we would be
594: * changing the original stdin device outside less.
595: */
596: if (fd0 != 0)
597: setmode(0, on ? O_BINARY : O_TEXT);
598: #else
599: kill_char = ESC;
600: #endif
601: werase_char = CONTROL('W');
602: #endif
1.1 etheisen 603: #endif
604: #endif
605: #endif
606: curr_on = on;
607: }
608:
1.11 millert 609: #if !MSDOS_COMPILER
610: /*
611: * Some glue to prevent calling termcap functions if tgetent() failed.
612: */
613: static int hardcopy;
614:
615: static char *
616: ltget_env(capname)
617: char *capname;
1.1 etheisen 618: {
1.11 millert 619: char name[16];
1.1 etheisen 620:
1.11 millert 621: strlcpy(name, "LESS_TERMCAP_", sizeof(name));
622: strlcat(name, capname, sizeof(name));
623: return (lgetenv(name));
1.1 etheisen 624: }
625:
1.11 millert 626: static int
627: ltgetflag(capname)
628: char *capname;
1.1 etheisen 629: {
1.11 millert 630: char *s;
1.1 etheisen 631:
1.11 millert 632: if ((s = ltget_env(capname)) != NULL)
633: return (*s != '\0' && *s != '0');
634: if (hardcopy)
635: return (0);
636: return (tgetflag(capname));
1.1 etheisen 637: }
638:
1.11 millert 639: static int
640: ltgetnum(capname)
641: char *capname;
1.1 etheisen 642: {
1.8 mpech 643: char *s;
1.1 etheisen 644:
1.11 millert 645: if ((s = ltget_env(capname)) != NULL)
646: return (atoi(s));
647: if (hardcopy)
648: return (-1);
649: return (tgetnum(capname));
650: }
1.5 millert 651:
1.11 millert 652: static char *
653: ltgetstr(capname, pp)
654: char *capname;
655: char **pp;
656: {
657: char *s;
1.1 etheisen 658:
1.11 millert 659: if ((s = ltget_env(capname)) != NULL)
660: return (s);
661: if (hardcopy)
662: return (NULL);
663: return (tgetstr(capname, pp));
1.1 etheisen 664: }
1.11 millert 665: #endif /* MSDOS_COMPILER */
1.1 etheisen 666:
667: /*
1.11 millert 668: * Get size of the output screen.
1.1 etheisen 669: */
670: public void
1.11 millert 671: scrsize()
1.1 etheisen 672: {
1.11 millert 673: register char *s;
674: int sys_height;
675: int sys_width;
676: #if !MSDOS_COMPILER
677: int n;
678: #endif
1.1 etheisen 679:
1.11 millert 680: #define DEF_SC_WIDTH 80
681: #if MSDOS_COMPILER
682: #define DEF_SC_HEIGHT 25
683: #else
684: #define DEF_SC_HEIGHT 24
685: #endif
1.1 etheisen 686:
687:
1.11 millert 688: sys_width = sys_height = 0;
1.1 etheisen 689:
1.11 millert 690: #if MSDOS_COMPILER==MSOFTC
1.1 etheisen 691: {
1.11 millert 692: struct videoconfig w;
693: _getvideoconfig(&w);
694: sys_height = w.numtextrows;
695: sys_width = w.numtextcols;
1.1 etheisen 696: }
1.11 millert 697: #else
698: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1.1 etheisen 699: {
1.11 millert 700: struct text_info w;
701: gettextinfo(&w);
702: sys_height = w.screenheight;
703: sys_width = w.screenwidth;
1.1 etheisen 704: }
1.11 millert 705: #else
706: #if MSDOS_COMPILER==WIN32C
1.1 etheisen 707: {
1.11 millert 708: CONSOLE_SCREEN_BUFFER_INFO scr;
709: GetConsoleScreenBufferInfo(con_out, &scr);
710: sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1;
711: sys_width = scr.srWindow.Right - scr.srWindow.Left + 1;
1.1 etheisen 712: }
1.11 millert 713: #else
714: #if OS2
1.1 etheisen 715: {
1.11 millert 716: int s[2];
717: _scrsize(s);
718: sys_width = s[0];
719: sys_height = s[1];
720: /*
721: * When using terminal emulators for XFree86/OS2, the
722: * _scrsize function does not work well.
723: * Call the scrsize.exe program to get the window size.
724: */
725: windowid = getenv("WINDOWID");
726: if (windowid != NULL)
727: {
728: FILE *fd = popen("scrsize", "rt");
729: if (fd != NULL)
730: {
731: int w, h;
732: fscanf(fd, "%i %i", &w, &h);
733: if (w > 0 && h > 0)
734: {
735: sys_width = w;
736: sys_height = h;
737: }
738: pclose(fd);
739: }
740: }
1.1 etheisen 741: }
1.11 millert 742: #else
743: #ifdef TIOCGWINSZ
1.1 etheisen 744: {
1.11 millert 745: struct winsize w;
746: if (ioctl(2, TIOCGWINSZ, &w) == 0)
747: {
748: if (w.ws_row > 0)
749: sys_height = w.ws_row;
750: if (w.ws_col > 0)
751: sys_width = w.ws_col;
752: }
1.1 etheisen 753: }
1.11 millert 754: #else
755: #ifdef WIOCGETD
1.1 etheisen 756: {
1.11 millert 757: struct uwdata w;
758: if (ioctl(2, WIOCGETD, &w) == 0)
759: {
760: if (w.uw_height > 0)
761: sys_height = w.uw_height / w.uw_vs;
762: if (w.uw_width > 0)
763: sys_width = w.uw_width / w.uw_hs;
764: }
1.1 etheisen 765: }
1.11 millert 766: #endif
767: #endif
768: #endif
769: #endif
770: #endif
771: #endif
1.1 etheisen 772:
1.11 millert 773: if (sys_height > 0)
774: sc_height = sys_height;
775: else if ((s = lgetenv("LINES")) != NULL)
776: sc_height = atoi(s);
777: #if !MSDOS_COMPILER
778: else if ((n = ltgetnum("li")) > 0)
779: sc_height = n;
780: #endif
781: else
782: sc_height = DEF_SC_HEIGHT;
1.1 etheisen 783:
1.11 millert 784: if (sys_width > 0)
785: sc_width = sys_width;
786: else if ((s = lgetenv("COLUMNS")) != NULL)
787: sc_width = atoi(s);
788: #if !MSDOS_COMPILER
789: else if ((n = ltgetnum("co")) > 0)
790: sc_width = n;
791: #endif
792: else
793: sc_width = DEF_SC_WIDTH;
794: }
1.1 etheisen 795:
1.11 millert 796: #if MSDOS_COMPILER==MSOFTC
797: /*
798: * Figure out how many empty loops it takes to delay a millisecond.
799: */
800: static void
801: get_clock()
802: {
803: clock_t start;
804:
805: /*
806: * Get synchronized at the start of a tick.
807: */
808: start = clock();
809: while (clock() == start)
810: ;
811: /*
812: * Now count loops till the next tick.
813: */
814: start = clock();
815: msec_loops = 0;
816: while (clock() == start)
817: msec_loops++;
1.1 etheisen 818: /*
1.11 millert 819: * Convert from (loops per clock) to (loops per millisecond).
1.1 etheisen 820: */
1.11 millert 821: msec_loops *= CLOCKS_PER_SEC;
822: msec_loops /= 1000;
823: }
824:
825: /*
826: * Delay for a specified number of milliseconds.
827: */
828: static void
829: dummy_func()
830: {
831: static long delay_dummy = 0;
832: delay_dummy++;
1.1 etheisen 833: }
834:
835: static void
1.11 millert 836: delay(msec)
837: int msec;
1.1 etheisen 838: {
1.11 millert 839: long i;
840:
841: while (msec-- > 0)
842: {
843: for (i = 0; i < msec_loops; i++)
844: {
845: /*
846: * Make it look like we're doing something here,
847: * so the optimizer doesn't remove the whole loop.
848: */
849: dummy_func();
850: }
851: }
1.1 etheisen 852: }
853: #endif
854:
855: /*
1.11 millert 856: * Return the characters actually input by a "special" key.
1.1 etheisen 857: */
1.11 millert 858: public char *
859: special_key_str(key)
860: int key;
1.1 etheisen 861: {
1.11 millert 862: static char tbuf[40];
863: char *s;
864: #if MSDOS_COMPILER || OS2
865: static char k_right[] = { '\340', PCK_RIGHT, 0 };
866: static char k_left[] = { '\340', PCK_LEFT, 0 };
867: static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 };
868: static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 };
869: static char k_insert[] = { '\340', PCK_INSERT, 0 };
870: static char k_delete[] = { '\340', PCK_DELETE, 0 };
871: static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 };
872: static char k_ctl_backspace[] = { '\177', 0 };
873: static char k_home[] = { '\340', PCK_HOME, 0 };
874: static char k_end[] = { '\340', PCK_END, 0 };
875: static char k_up[] = { '\340', PCK_UP, 0 };
876: static char k_down[] = { '\340', PCK_DOWN, 0 };
877: static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 };
878: static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 };
879: static char k_pageup[] = { '\340', PCK_PAGEUP, 0 };
880: static char k_f1[] = { '\340', PCK_F1, 0 };
881: #endif
882: #if !MSDOS_COMPILER
883: char *sp = tbuf;
884: #endif
1.1 etheisen 885:
1.11 millert 886: switch (key)
887: {
888: #if OS2
1.1 etheisen 889: /*
1.11 millert 890: * If windowid is not NULL, assume less is executed in
891: * the XFree86 environment.
1.1 etheisen 892: */
1.11 millert 893: case SK_RIGHT_ARROW:
894: s = windowid ? ltgetstr("kr", &sp) : k_right;
895: break;
896: case SK_LEFT_ARROW:
897: s = windowid ? ltgetstr("kl", &sp) : k_left;
898: break;
899: case SK_UP_ARROW:
900: s = windowid ? ltgetstr("ku", &sp) : k_up;
901: break;
902: case SK_DOWN_ARROW:
903: s = windowid ? ltgetstr("kd", &sp) : k_down;
904: break;
905: case SK_PAGE_UP:
906: s = windowid ? ltgetstr("kP", &sp) : k_pageup;
907: break;
908: case SK_PAGE_DOWN:
909: s = windowid ? ltgetstr("kN", &sp) : k_pagedown;
910: break;
911: case SK_HOME:
912: s = windowid ? ltgetstr("kh", &sp) : k_home;
913: break;
914: case SK_END:
915: s = windowid ? ltgetstr("@7", &sp) : k_end;
916: break;
917: case SK_DELETE:
918: if (windowid)
919: {
920: s = ltgetstr("kD", &sp);
921: if (s == NULL)
922: {
923: tbuf[0] = '\177';
924: tbuf[1] = '\0';
925: s = tbuf;
926: }
927: } else
928: s = k_delete;
929: break;
930: #endif
931: #if MSDOS_COMPILER
932: case SK_RIGHT_ARROW:
933: s = k_right;
934: break;
935: case SK_LEFT_ARROW:
936: s = k_left;
937: break;
938: case SK_UP_ARROW:
939: s = k_up;
940: break;
941: case SK_DOWN_ARROW:
942: s = k_down;
943: break;
944: case SK_PAGE_UP:
945: s = k_pageup;
946: break;
947: case SK_PAGE_DOWN:
948: s = k_pagedown;
949: break;
950: case SK_HOME:
951: s = k_home;
952: break;
953: case SK_END:
954: s = k_end;
955: break;
956: case SK_DELETE:
957: s = k_delete;
958: break;
959: #endif
960: #if MSDOS_COMPILER || OS2
961: case SK_INSERT:
962: s = k_insert;
963: break;
964: case SK_CTL_LEFT_ARROW:
965: s = k_ctl_left;
966: break;
967: case SK_CTL_RIGHT_ARROW:
968: s = k_ctl_right;
969: break;
970: case SK_CTL_BACKSPACE:
971: s = k_ctl_backspace;
972: break;
973: case SK_CTL_DELETE:
974: s = k_ctl_delete;
975: break;
976: case SK_F1:
977: s = k_f1;
978: break;
979: case SK_BACKTAB:
980: s = k_backtab;
981: break;
982: #else
983: case SK_RIGHT_ARROW:
984: s = ltgetstr("kr", &sp);
985: break;
986: case SK_LEFT_ARROW:
987: s = ltgetstr("kl", &sp);
988: break;
989: case SK_UP_ARROW:
990: s = ltgetstr("ku", &sp);
991: break;
992: case SK_DOWN_ARROW:
993: s = ltgetstr("kd", &sp);
994: break;
995: case SK_PAGE_UP:
996: s = ltgetstr("kP", &sp);
997: break;
998: case SK_PAGE_DOWN:
999: s = ltgetstr("kN", &sp);
1000: break;
1001: case SK_HOME:
1002: s = ltgetstr("kh", &sp);
1003: break;
1004: case SK_END:
1005: s = ltgetstr("@7", &sp);
1006: break;
1007: case SK_DELETE:
1008: s = ltgetstr("kD", &sp);
1009: if (s == NULL)
1.1 etheisen 1010: {
1.11 millert 1011: tbuf[0] = '\177';
1012: tbuf[1] = '\0';
1013: s = tbuf;
1014: }
1015: break;
1016: #endif
1017: case SK_CONTROL_K:
1018: tbuf[0] = CONTROL('K');
1019: tbuf[1] = '\0';
1020: s = tbuf;
1021: break;
1022: default:
1023: return (NULL);
1024: }
1025: return (s);
1026: }
1027:
1028: /*
1029: * Get terminal capabilities via termcap.
1030: */
1031: public void
1032: get_term()
1033: {
1034: #if MSDOS_COMPILER
1035: auto_wrap = 1;
1036: ignaw = 0;
1037: can_goto_line = 1;
1038: clear_bg = 1;
1039: /*
1040: * Set up default colors.
1041: * The xx_s_width and xx_e_width vars are already initialized to 0.
1042: */
1043: #if MSDOS_COMPILER==MSOFTC
1044: sy_bg_color = _getbkcolor();
1045: sy_fg_color = _gettextcolor();
1046: get_clock();
1047: #else
1048: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1049: {
1050: struct text_info w;
1051: gettextinfo(&w);
1052: sy_bg_color = (w.attribute >> 4) & 0x0F;
1053: sy_fg_color = (w.attribute >> 0) & 0x0F;
1054: }
1055: #else
1056: #if MSDOS_COMPILER==WIN32C
1057: {
1058: DWORD nread;
1059: CONSOLE_SCREEN_BUFFER_INFO scr;
1060:
1061: con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE);
1062: /*
1063: * Always open stdin in binary. Note this *must* be done
1064: * before any file operations have been done on fd0.
1065: */
1066: SET_BINARY(0);
1067: GetConsoleScreenBufferInfo(con_out, &scr);
1068: ReadConsoleOutputAttribute(con_out, &curr_attr,
1069: 1, scr.dwCursorPosition, &nread);
1070: sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */
1071: sy_fg_color = curr_attr & FG_COLORS;
1072: }
1073: #endif
1074: #endif
1075: #endif
1076: nm_fg_color = sy_fg_color;
1077: nm_bg_color = sy_bg_color;
1078: bo_fg_color = 11;
1079: bo_bg_color = 0;
1080: ul_fg_color = 9;
1081: ul_bg_color = 0;
1082: so_fg_color = 15;
1083: so_bg_color = 9;
1084: bl_fg_color = 15;
1085: bl_bg_color = 0;
1086:
1087: /*
1088: * Get size of the screen.
1089: */
1090: scrsize();
1091: pos_init();
1092:
1093:
1094: #else /* !MSDOS_COMPILER */
1095:
1096: char *sp;
1097: register char *t1, *t2;
1098: char *term;
1099: char termbuf[TERMBUF_SIZE];
1100:
1101: static char sbuf[TERMSBUF_SIZE];
1102:
1103: #if OS2
1104: /*
1105: * Make sure the termcap database is available.
1106: */
1107: sp = lgetenv("TERMCAP");
1108: if (sp == NULL || *sp == '\0')
1109: {
1110: char *termcap;
1111: if ((sp = homefile("termcap.dat")) != NULL)
1112: {
1113: size_t len = strlen(sp) + 9;
1114: termcap = (char *) ecalloc(len, sizeof(char));
1115: snprintf(termcap, len, "TERMCAP=%s", sp);
1116: free(sp);
1117: putenv(termcap);
1.1 etheisen 1118: }
1119: }
1120: #endif
1121: /*
1122: * Find out what kind of terminal this is.
1123: */
1.11 millert 1124: if ((term = lgetenv("TERM")) == NULL)
1.1 etheisen 1125: term = DEFAULT_TERM;
1.11 millert 1126: hardcopy = 0;
1.1 etheisen 1127: if (tgetent(termbuf, term) <= 0)
1.11 millert 1128: hardcopy = 1;
1129: if (ltgetflag("hc"))
1130: hardcopy = 1;
1.1 etheisen 1131:
1132: /*
1133: * Get size of the screen.
1134: */
1135: scrsize();
1136: pos_init();
1137:
1.11 millert 1138: auto_wrap = ltgetflag("am");
1139: ignaw = ltgetflag("xn");
1140: above_mem = ltgetflag("da");
1141: below_mem = ltgetflag("db");
1142: clear_bg = ltgetflag("ut");
1.1 etheisen 1143:
1144: /*
1145: * Assumes termcap variable "sg" is the printing width of:
1146: * the standout sequence, the end standout sequence,
1147: * the underline sequence, the end underline sequence,
1148: * the boldface sequence, and the end boldface sequence.
1149: */
1.11 millert 1150: if ((so_s_width = ltgetnum("sg")) < 0)
1.1 etheisen 1151: so_s_width = 0;
1152: so_e_width = so_s_width;
1153:
1154: bo_s_width = bo_e_width = so_s_width;
1155: ul_s_width = ul_e_width = so_s_width;
1156: bl_s_width = bl_e_width = so_s_width;
1157:
1158: #if HILITE_SEARCH
1159: if (so_s_width > 0 || so_e_width > 0)
1160: /*
1161: * Disable highlighting by default on magic cookie terminals.
1162: * Turning on highlighting might change the displayed width
1163: * of a line, causing the display to get messed up.
1164: * The user can turn it back on with -g,
1165: * but she won't like the results.
1166: */
1167: hilite_search = 0;
1168: #endif
1169:
1170: /*
1171: * Get various string-valued capabilities.
1172: */
1173: sp = sbuf;
1174:
1175: #if HAVE_OSPEED
1.11 millert 1176: sc_pad = ltgetstr("pc", &sp);
1.1 etheisen 1177: if (sc_pad != NULL)
1178: PC = *sc_pad;
1179: #endif
1180:
1.11 millert 1181: sc_s_keypad = ltgetstr("ks", &sp);
1.1 etheisen 1182: if (sc_s_keypad == NULL)
1183: sc_s_keypad = "";
1.11 millert 1184: sc_e_keypad = ltgetstr("ke", &sp);
1.1 etheisen 1185: if (sc_e_keypad == NULL)
1186: sc_e_keypad = "";
1187:
1.2 etheisen 1188: /*
1189: * This loses for terminals with termcap entries with ti/te strings
1190: * that switch to/from an alternate screen, and we're in quit_at_eof
1191: * (eg, more(1)).
1192: */
1.11 millert 1193: if (!quit_at_eof && !ismore) {
1194: sc_init = ltgetstr("ti", &sp);
1195: sc_deinit= ltgetstr("te", &sp);
1.2 etheisen 1196: }
1.1 etheisen 1197: if (sc_init == NULL)
1198: sc_init = "";
1.11 millert 1199:
1.1 etheisen 1200: if (sc_deinit == NULL)
1201: sc_deinit = "";
1202:
1.11 millert 1203: sc_eol_clear = ltgetstr("ce", &sp);
1204: if (sc_eol_clear == NULL || *sc_eol_clear == '\0')
1.1 etheisen 1205: {
1.11 millert 1206: missing_cap = 1;
1.1 etheisen 1207: sc_eol_clear = "";
1208: }
1209:
1.11 millert 1210: sc_eos_clear = ltgetstr("cd", &sp);
1211: if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0'))
1.1 etheisen 1212: {
1.11 millert 1213: missing_cap = 1;
1.1 etheisen 1214: sc_eol_clear = "";
1215: }
1216:
1.11 millert 1217: sc_clear = ltgetstr("cl", &sp);
1218: if (sc_clear == NULL || *sc_clear == '\0')
1.1 etheisen 1219: {
1.11 millert 1220: missing_cap = 1;
1.1 etheisen 1221: sc_clear = "\n\n";
1222: }
1223:
1.11 millert 1224: sc_move = ltgetstr("cm", &sp);
1225: if (sc_move == NULL || *sc_move == '\0')
1.1 etheisen 1226: {
1227: /*
1228: * This is not an error here, because we don't
1229: * always need sc_move.
1230: * We need it only if we don't have home or lower-left.
1231: */
1232: sc_move = "";
1233: can_goto_line = 0;
1234: } else
1235: can_goto_line = 1;
1236:
1.11 millert 1237: tmodes("so", "se", &sc_s_in, &sc_s_out, "", "", &sp);
1238: tmodes("us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp);
1239: tmodes("md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp);
1240: tmodes("mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp);
1.1 etheisen 1241:
1.11 millert 1242: sc_visual_bell = ltgetstr("vb", &sp);
1243: if (sc_visual_bell == NULL)
1.1 etheisen 1244: sc_visual_bell = "";
1245:
1.11 millert 1246: if (ltgetflag("bs"))
1.1 etheisen 1247: sc_backspace = "\b";
1248: else
1249: {
1.11 millert 1250: sc_backspace = ltgetstr("bc", &sp);
1.1 etheisen 1251: if (sc_backspace == NULL || *sc_backspace == '\0')
1252: sc_backspace = "\b";
1253: }
1254:
1255: /*
1256: * Choose between using "ho" and "cm" ("home" and "cursor move")
1257: * to move the cursor to the upper left corner of the screen.
1258: */
1.11 millert 1259: t1 = ltgetstr("ho", &sp);
1260: if (t1 == NULL)
1.1 etheisen 1261: t1 = "";
1262: if (*sc_move == '\0')
1263: t2 = "";
1264: else
1265: {
1.11 millert 1266: strlcpy(sp, tgoto(sc_move, 0, 0), sbuf + sizeof(sbuf) - sp);
1.1 etheisen 1267: t2 = sp;
1268: sp += strlen(sp) + 1;
1269: }
1.11 millert 1270: sc_home = cheaper(t1, t2, "|\b^");
1.1 etheisen 1271:
1272: /*
1273: * Choose between using "ll" and "cm" ("lower left" and "cursor move")
1274: * to move the cursor to the lower left corner of the screen.
1275: */
1.11 millert 1276: t1 = ltgetstr("ll", &sp);
1277: if (t1 == NULL)
1.1 etheisen 1278: t1 = "";
1279: if (*sc_move == '\0')
1280: t2 = "";
1281: else
1282: {
1.11 millert 1283: strlcpy(sp, tgoto(sc_move, 0, sc_height-1),
1284: sbuf + sizeof(sbuf) - sp);
1.1 etheisen 1285: t2 = sp;
1286: sp += strlen(sp) + 1;
1287: }
1.11 millert 1288: sc_lower_left = cheaper(t1, t2, "\r");
1.1 etheisen 1289:
1290: /*
1291: * Choose between using "al" or "sr" ("add line" or "scroll reverse")
1292: * to add a line at the top of the screen.
1293: */
1.11 millert 1294: t1 = ltgetstr("al", &sp);
1295: if (t1 == NULL)
1.1 etheisen 1296: t1 = "";
1.11 millert 1297: t2 = ltgetstr("sr", &sp);
1298: if (t2 == NULL)
1.1 etheisen 1299: t2 = "";
1300: #if OS2
1301: if (*t1 == '\0' && *t2 == '\0')
1302: sc_addline = "";
1303: else
1304: #endif
1305: if (above_mem)
1306: sc_addline = t1;
1307: else
1.11 millert 1308: sc_addline = cheaper(t1, t2, "");
1.1 etheisen 1309: if (*sc_addline == '\0')
1310: {
1311: /*
1312: * Force repaint on any backward movement.
1313: */
1.11 millert 1314: no_back_scroll = 1;
1.1 etheisen 1315: }
1.11 millert 1316: #endif /* MSDOS_COMPILER */
1.1 etheisen 1317: }
1318:
1.11 millert 1319: #if !MSDOS_COMPILER
1.1 etheisen 1320: /*
1321: * Return the cost of displaying a termcap string.
1322: * We use the trick of calling tputs, but as a char printing function
1323: * we give it inc_costcount, which just increments "costcount".
1324: * This tells us how many chars would be printed by using this string.
1325: * {{ Couldn't we just use strlen? }}
1326: */
1327: static int costcount;
1328:
1329: /*ARGSUSED*/
1330: static int
1331: inc_costcount(c)
1332: int c;
1333: {
1334: costcount++;
1335: return (c);
1336: }
1337:
1338: static int
1339: cost(t)
1340: char *t;
1341: {
1342: costcount = 0;
1343: tputs(t, sc_height, inc_costcount);
1344: return (costcount);
1345: }
1346:
1347: /*
1348: * Return the "best" of the two given termcap strings.
1349: * The best, if both exist, is the one with the lower
1350: * cost (see cost() function).
1351: */
1352: static char *
1.11 millert 1353: cheaper(t1, t2, def)
1.1 etheisen 1354: char *t1, *t2;
1355: char *def;
1356: {
1357: if (*t1 == '\0' && *t2 == '\0')
1358: {
1.11 millert 1359: missing_cap = 1;
1.1 etheisen 1360: return (def);
1361: }
1362: if (*t1 == '\0')
1363: return (t2);
1364: if (*t2 == '\0')
1365: return (t1);
1366: if (cost(t1) < cost(t2))
1367: return (t1);
1368: return (t2);
1369: }
1370:
1.11 millert 1371: static void
1372: tmodes(incap, outcap, instr, outstr, def_instr, def_outstr, spp)
1373: char *incap;
1374: char *outcap;
1375: char **instr;
1376: char **outstr;
1377: char *def_instr;
1378: char *def_outstr;
1379: char **spp;
1380: {
1381: *instr = ltgetstr(incap, spp);
1382: if (*instr == NULL)
1383: {
1384: /* Use defaults. */
1385: *instr = def_instr;
1386: *outstr = def_outstr;
1387: return;
1388: }
1389:
1390: *outstr = ltgetstr(outcap, spp);
1391: if (*outstr == NULL)
1392: /* No specific out capability; use "me". */
1393: *outstr = ltgetstr("me", spp);
1394: if (*outstr == NULL)
1395: /* Don't even have "me"; use a null string. */
1396: *outstr = "";
1397: }
1398:
1399: #endif /* MSDOS_COMPILER */
1400:
1.1 etheisen 1401:
1402: /*
1403: * Below are the functions which perform all the
1404: * terminal-specific screen manipulation.
1405: */
1406:
1407:
1.11 millert 1408: #if MSDOS_COMPILER
1409:
1410: #if MSDOS_COMPILER==WIN32C
1411: static void
1412: _settextposition(int row, int col)
1413: {
1414: COORD cpos;
1415: CONSOLE_SCREEN_BUFFER_INFO csbi;
1416:
1417: GetConsoleScreenBufferInfo(con_out, &csbi);
1418: cpos.X = csbi.srWindow.Left + (col - 1);
1419: cpos.Y = csbi.srWindow.Top + (row - 1);
1420: SetConsoleCursorPosition(con_out, cpos);
1421: }
1422: #endif
1423:
1424: /*
1425: * Initialize the screen to the correct color at startup.
1426: */
1427: static void
1428: initcolor()
1429: {
1430: SETCOLORS(nm_fg_color, nm_bg_color);
1431: #if 0
1432: /*
1433: * This clears the screen at startup. This is different from
1434: * the behavior of other versions of less. Disable it for now.
1435: */
1436: char *blanks;
1437: int row;
1438: int col;
1439:
1440: /*
1441: * Create a complete, blank screen using "normal" colors.
1442: */
1443: SETCOLORS(nm_fg_color, nm_bg_color);
1444: blanks = (char *) ecalloc(width+1, sizeof(char));
1445: for (col = 0; col < sc_width; col++)
1446: blanks[col] = ' ';
1447: blanks[sc_width] = '\0';
1448: for (row = 0; row < sc_height; row++)
1449: _outtext(blanks);
1450: free(blanks);
1451: #endif
1452: }
1453: #endif
1454:
1455: #if MSDOS_COMPILER==WIN32C
1456:
1457: /*
1458: * Termcap-like init with a private win32 console.
1459: */
1460: static void
1461: win32_init_term()
1462: {
1463: CONSOLE_SCREEN_BUFFER_INFO scr;
1464: COORD size;
1465:
1466: if (con_out_save == INVALID_HANDLE_VALUE)
1467: return;
1468:
1469: GetConsoleScreenBufferInfo(con_out_save, &scr);
1470:
1471: if (con_out_ours == INVALID_HANDLE_VALUE)
1472: {
1473: /*
1474: * Create our own screen buffer, so that we
1475: * may restore the original when done.
1476: */
1477: con_out_ours = CreateConsoleScreenBuffer(
1478: GENERIC_WRITE | GENERIC_READ,
1479: FILE_SHARE_WRITE | FILE_SHARE_READ,
1480: (LPSECURITY_ATTRIBUTES) NULL,
1481: CONSOLE_TEXTMODE_BUFFER,
1482: (LPVOID) NULL);
1483: }
1484:
1485: size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
1486: size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
1487: SetConsoleScreenBufferSize(con_out_ours, size);
1488: SetConsoleActiveScreenBuffer(con_out_ours);
1489: con_out = con_out_ours;
1490: }
1491:
1492: /*
1493: * Restore the startup console.
1494: */
1495: static void
1496: win32_deinit_term()
1497: {
1498: if (con_out_save == INVALID_HANDLE_VALUE)
1499: return;
1500: if (quitting)
1501: (void) CloseHandle(con_out_ours);
1502: SetConsoleActiveScreenBuffer(con_out_save);
1503: con_out = con_out_save;
1504: }
1505:
1506: #endif
1507:
1.1 etheisen 1508: /*
1509: * Initialize terminal
1510: */
1511: public void
1512: init()
1513: {
1.11 millert 1514: #if !MSDOS_COMPILER
1515: if (!no_init)
1516: tputs(sc_init, sc_height, putchr);
1517: if (!no_keypad)
1518: tputs(sc_s_keypad, sc_height, putchr);
1519: #else
1520: #if MSDOS_COMPILER==WIN32C
1521: if (!no_init)
1522: win32_init_term();
1523: #endif
1524: initcolor();
1525: flush();
1526: #endif
1.1 etheisen 1527: init_done = 1;
1528: }
1529:
1530: /*
1531: * Deinitialize terminal
1532: */
1533: public void
1534: deinit()
1535: {
1536: if (!init_done)
1537: return;
1.11 millert 1538: #if !MSDOS_COMPILER
1539: if (!no_keypad)
1540: tputs(sc_e_keypad, sc_height, putchr);
1541: if (!no_init)
1542: tputs(sc_deinit, sc_height, putchr);
1543: #else
1544: /* Restore system colors. */
1545: SETCOLORS(sy_fg_color, sy_bg_color);
1546: #if MSDOS_COMPILER==WIN32C
1547: if (!no_init)
1548: win32_deinit_term();
1549: #else
1550: /* Need clreol to make SETCOLORS take effect. */
1551: clreol();
1552: #endif
1553: #endif
1.1 etheisen 1554: init_done = 0;
1555: }
1556:
1557: /*
1558: * Home cursor (move to upper left corner of screen).
1559: */
1560: public void
1561: home()
1562: {
1.11 millert 1563: #if !MSDOS_COMPILER
1.1 etheisen 1564: tputs(sc_home, 1, putchr);
1.11 millert 1565: #else
1566: flush();
1567: _settextposition(1,1);
1568: #endif
1.1 etheisen 1569: }
1570:
1571: /*
1572: * Add a blank line (called with cursor at home).
1573: * Should scroll the display down.
1574: */
1575: public void
1576: add_line()
1577: {
1.11 millert 1578: #if !MSDOS_COMPILER
1.1 etheisen 1579: tputs(sc_addline, sc_height, putchr);
1.11 millert 1580: #else
1581: flush();
1582: #if MSDOS_COMPILER==MSOFTC
1583: _scrolltextwindow(_GSCROLLDOWN);
1584: _settextposition(1,1);
1585: #else
1586: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1587: movetext(1,1, sc_width,sc_height-1, 1,2);
1588: gotoxy(1,1);
1589: clreol();
1590: #else
1591: #if MSDOS_COMPILER==WIN32C
1592: {
1593: CHAR_INFO fillchar;
1594: SMALL_RECT rcSrc, rcClip;
1595: COORD new_org;
1596: CONSOLE_SCREEN_BUFFER_INFO csbi;
1597:
1598: GetConsoleScreenBufferInfo(con_out,&csbi);
1599:
1600: /* The clip rectangle is the entire visible screen. */
1601: rcClip.Left = csbi.srWindow.Left;
1602: rcClip.Top = csbi.srWindow.Top;
1603: rcClip.Right = csbi.srWindow.Right;
1604: rcClip.Bottom = csbi.srWindow.Bottom;
1605:
1606: /* The source rectangle is the visible screen minus the last line. */
1607: rcSrc = rcClip;
1608: rcSrc.Bottom--;
1609:
1610: /* Move the top left corner of the source window down one row. */
1611: new_org.X = rcSrc.Left;
1612: new_org.Y = rcSrc.Top + 1;
1613:
1614: /* Fill the right character and attributes. */
1615: fillchar.Char.AsciiChar = ' ';
1616: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1617: fillchar.Attributes = curr_attr;
1618: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1619: _settextposition(1,1);
1620: }
1621: #endif
1622: #endif
1623: #endif
1624: #endif
1625: }
1626:
1627: #if 0
1628: /*
1629: * Remove the n topmost lines and scroll everything below it in the
1630: * window upward. This is needed to stop leaking the topmost line
1631: * into the scrollback buffer when we go down-one-line (in WIN32).
1632: */
1633: public void
1634: remove_top(n)
1635: int n;
1636: {
1637: #if MSDOS_COMPILER==WIN32C
1638: SMALL_RECT rcSrc, rcClip;
1639: CHAR_INFO fillchar;
1640: COORD new_org;
1641: CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */
1642:
1643: if (n >= sc_height - 1)
1644: {
1645: clear();
1646: home();
1647: return;
1648: }
1649:
1650: flush();
1651:
1652: GetConsoleScreenBufferInfo(con_out, &csbi);
1653:
1654: /* Get the extent of all-visible-rows-but-the-last. */
1655: rcSrc.Left = csbi.srWindow.Left;
1656: rcSrc.Top = csbi.srWindow.Top + n;
1657: rcSrc.Right = csbi.srWindow.Right;
1658: rcSrc.Bottom = csbi.srWindow.Bottom;
1659:
1660: /* Get the clip rectangle. */
1661: rcClip.Left = rcSrc.Left;
1662: rcClip.Top = csbi.srWindow.Top;
1663: rcClip.Right = rcSrc.Right;
1664: rcClip.Bottom = rcSrc.Bottom ;
1665:
1666: /* Move the source window up n rows. */
1667: new_org.X = rcSrc.Left;
1668: new_org.Y = rcSrc.Top - n;
1669:
1670: /* Fill the right character and attributes. */
1671: fillchar.Char.AsciiChar = ' ';
1672: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1673: fillchar.Attributes = curr_attr;
1674:
1675: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1676:
1677: /* Position cursor on first blank line. */
1678: goto_line(sc_height - n - 1);
1679: #endif
1.1 etheisen 1680: }
1.11 millert 1681: #endif
1682:
1683: #if MSDOS_COMPILER==WIN32C
1684: /*
1685: * Clear the screen.
1686: */
1687: static void
1688: win32_clear()
1689: {
1690: /*
1691: * This will clear only the currently visible rows of the NT
1692: * console buffer, which means none of the precious scrollback
1693: * rows are touched making for faster scrolling. Note that, if
1694: * the window has fewer columns than the console buffer (i.e.
1695: * there is a horizontal scrollbar as well), the entire width
1696: * of the visible rows will be cleared.
1697: */
1698: COORD topleft;
1699: DWORD nchars;
1700: DWORD winsz;
1701: CONSOLE_SCREEN_BUFFER_INFO csbi;
1702:
1703: /* get the number of cells in the current buffer */
1704: GetConsoleScreenBufferInfo(con_out, &csbi);
1705: winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1);
1706: topleft.X = 0;
1707: topleft.Y = csbi.srWindow.Top;
1708:
1709: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1710: FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars);
1711: FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars);
1712: }
1713:
1714: /*
1715: * Remove the n topmost lines and scroll everything below it in the
1716: * window upward.
1717: */
1718: public void
1719: win32_scroll_up(n)
1720: int n;
1721: {
1722: SMALL_RECT rcSrc, rcClip;
1723: CHAR_INFO fillchar;
1724: COORD topleft;
1725: COORD new_org;
1726: DWORD nchars;
1727: DWORD size;
1728: CONSOLE_SCREEN_BUFFER_INFO csbi;
1729:
1730: if (n <= 0)
1731: return;
1732:
1733: if (n >= sc_height - 1)
1734: {
1735: win32_clear();
1736: _settextposition(1,1);
1737: return;
1738: }
1739:
1740: /* Get the extent of what will remain visible after scrolling. */
1741: GetConsoleScreenBufferInfo(con_out, &csbi);
1742: rcSrc.Left = csbi.srWindow.Left;
1743: rcSrc.Top = csbi.srWindow.Top + n;
1744: rcSrc.Right = csbi.srWindow.Right;
1745: rcSrc.Bottom = csbi.srWindow.Bottom;
1746:
1747: /* Get the clip rectangle. */
1748: rcClip.Left = rcSrc.Left;
1749: rcClip.Top = csbi.srWindow.Top;
1750: rcClip.Right = rcSrc.Right;
1751: rcClip.Bottom = rcSrc.Bottom ;
1752:
1753: /* Move the source text to the top of the screen. */
1754: new_org.X = rcSrc.Left;
1755: new_org.Y = 0;
1756:
1757: /* Fill the right character and attributes. */
1758: fillchar.Char.AsciiChar = ' ';
1759: fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color);
1760:
1761: /* Scroll the window. */
1762: SetConsoleTextAttribute(con_out, fillchar.Attributes);
1763: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1764:
1765: /* Clear remaining lines at bottom. */
1766: topleft.X = csbi.dwCursorPosition.X;
1767: topleft.Y = rcSrc.Bottom - n;
1768: size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X);
1769: FillConsoleOutputCharacter(con_out, ' ', size, topleft,
1770: &nchars);
1771: FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft,
1772: &nchars);
1773: SetConsoleTextAttribute(con_out, curr_attr);
1774:
1775: /* Move cursor n lines up from where it was. */
1776: csbi.dwCursorPosition.Y -= n;
1777: SetConsoleCursorPosition(con_out, csbi.dwCursorPosition);
1778: }
1779: #endif
1.1 etheisen 1780:
1781: /*
1782: * Move cursor to lower left corner of screen.
1783: */
1784: public void
1785: lower_left()
1786: {
1.11 millert 1787: #if !MSDOS_COMPILER
1.1 etheisen 1788: tputs(sc_lower_left, 1, putchr);
1.11 millert 1789: #else
1790: flush();
1791: _settextposition(sc_height, 1);
1792: #endif
1793: }
1794:
1795: /*
1796: * Check if the console size has changed and reset internals
1797: * (in lieu of SIGWINCH for WIN32).
1798: */
1799: public void
1800: check_winch()
1801: {
1802: #if MSDOS_COMPILER==WIN32C
1803: CONSOLE_SCREEN_BUFFER_INFO scr;
1804: COORD size;
1805:
1806: if (con_out == INVALID_HANDLE_VALUE)
1807: return;
1808:
1809: flush();
1810: GetConsoleScreenBufferInfo(con_out, &scr);
1811: size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
1812: size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
1813: if (size.Y != sc_height || size.X != sc_width)
1814: {
1815: sc_height = size.Y;
1816: sc_width = size.X;
1817: if (!no_init && con_out_ours == con_out)
1818: SetConsoleScreenBufferSize(con_out, size);
1819: pos_init();
1820: wscroll = (sc_height + 1) / 2;
1821: screen_trashed = 1;
1822: }
1823: #endif
1.1 etheisen 1824: }
1825:
1826: /*
1827: * Goto a specific line on the screen.
1828: */
1829: public void
1830: goto_line(slinenum)
1831: int slinenum;
1832: {
1.11 millert 1833: #if !MSDOS_COMPILER
1834: tputs(tgoto(sc_move, 0, slinenum), 1, putchr);
1835: #else
1836: flush();
1837: _settextposition(slinenum+1, 1);
1838: #endif
1.1 etheisen 1839: }
1840:
1.11 millert 1841: #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC
1.1 etheisen 1842: /*
1.11 millert 1843: * Create an alternate screen which is all white.
1844: * This screen is used to create a "flash" effect, by displaying it
1845: * briefly and then switching back to the normal screen.
1846: * {{ Yuck! There must be a better way to get a visual bell. }}
1.1 etheisen 1847: */
1.11 millert 1848: static void
1849: create_flash()
1.1 etheisen 1850: {
1.11 millert 1851: #if MSDOS_COMPILER==MSOFTC
1852: struct videoconfig w;
1853: char *blanks;
1854: int row, col;
1855:
1856: _getvideoconfig(&w);
1857: videopages = w.numvideopages;
1858: if (videopages < 2)
1859: {
1860: so_enter();
1861: so_exit();
1862: } else
1863: {
1864: _setactivepage(1);
1865: so_enter();
1866: blanks = (char *) ecalloc(w.numtextcols, sizeof(char));
1867: for (col = 0; col < w.numtextcols; col++)
1868: blanks[col] = ' ';
1869: for (row = w.numtextrows; row > 0; row--)
1870: _outmem(blanks, w.numtextcols);
1871: _setactivepage(0);
1872: _setvisualpage(0);
1873: free(blanks);
1874: so_exit();
1875: }
1876: #else
1877: #if MSDOS_COMPILER==BORLANDC
1878: register int n;
1879:
1880: whitescreen = (unsigned short *)
1881: malloc(sc_width * sc_height * sizeof(short));
1882: if (whitescreen == NULL)
1883: return;
1884: for (n = 0; n < sc_width * sc_height; n++)
1885: whitescreen[n] = 0x7020;
1886: #else
1887: #if MSDOS_COMPILER==WIN32C
1888: register int n;
1889:
1890: whitescreen = (WORD *)
1891: malloc(sc_height * sc_width * sizeof(WORD));
1892: if (whitescreen == NULL)
1893: return;
1894: /* Invert the standard colors. */
1895: for (n = 0; n < sc_width * sc_height; n++)
1896: whitescreen[n] = (WORD)((nm_fg_color << 4) | nm_bg_color);
1897: #endif
1898: #endif
1899: #endif
1900: flash_created = 1;
1.1 etheisen 1901: }
1.11 millert 1902: #endif /* MSDOS_COMPILER */
1.1 etheisen 1903:
1904: /*
1905: * Output the "visual bell", if there is one.
1906: */
1907: public void
1908: vbell()
1909: {
1.11 millert 1910: #if !MSDOS_COMPILER
1.1 etheisen 1911: if (*sc_visual_bell == '\0')
1912: return;
1913: tputs(sc_visual_bell, sc_height, putchr);
1.11 millert 1914: #else
1915: #if MSDOS_COMPILER==DJGPPC
1916: ScreenVisualBell();
1917: #else
1918: #if MSDOS_COMPILER==MSOFTC
1919: /*
1920: * Create a flash screen on the second video page.
1921: * Switch to that page, then switch back.
1922: */
1923: if (!flash_created)
1924: create_flash();
1925: if (videopages < 2)
1926: return;
1927: _setvisualpage(1);
1928: delay(100);
1929: _setvisualpage(0);
1930: #else
1931: #if MSDOS_COMPILER==BORLANDC
1932: unsigned short *currscreen;
1933:
1934: /*
1935: * Get a copy of the current screen.
1936: * Display the flash screen.
1937: * Then restore the old screen.
1938: */
1939: if (!flash_created)
1940: create_flash();
1941: if (whitescreen == NULL)
1942: return;
1943: currscreen = (unsigned short *)
1944: malloc(sc_width * sc_height * sizeof(short));
1945: if (currscreen == NULL) return;
1946: gettext(1, 1, sc_width, sc_height, currscreen);
1947: puttext(1, 1, sc_width, sc_height, whitescreen);
1948: delay(100);
1949: puttext(1, 1, sc_width, sc_height, currscreen);
1950: free(currscreen);
1951: #else
1952: #if MSDOS_COMPILER==WIN32C
1953: /* paint screen with an inverse color */
1954: clear();
1955:
1956: /* leave it displayed for 100 msec. */
1957: Sleep(100);
1958:
1959: /* restore with a redraw */
1960: repaint();
1961: #endif
1962: #endif
1963: #endif
1964: #endif
1965: #endif
1966: }
1967:
1968: /*
1969: * Make a noise.
1970: */
1971: static void
1972: beep()
1973: {
1974: #if !MSDOS_COMPILER
1975: putchr(CONTROL('G'));
1976: #else
1977: #if MSDOS_COMPILER==WIN32C
1978: MessageBeep(0);
1979: #else
1980: write(1, "\7", 1);
1981: #endif
1982: #endif
1983: }
1984:
1985: /*
1986: * Ring the terminal bell.
1987: */
1988: public void
1989: bell()
1990: {
1991: if (quiet == VERY_QUIET)
1992: vbell();
1993: else
1994: beep();
1.1 etheisen 1995: }
1996:
1997: /*
1998: * Clear the screen.
1999: */
2000: public void
2001: clear()
2002: {
1.11 millert 2003: #if !MSDOS_COMPILER
1.1 etheisen 2004: tputs(sc_clear, sc_height, putchr);
1.11 millert 2005: #else
2006: flush();
2007: #if MSDOS_COMPILER==WIN32C
2008: win32_clear();
2009: #else
2010: _clearscreen(_GCLEARSCREEN);
2011: #endif
2012: #endif
1.1 etheisen 2013: }
2014:
2015: /*
2016: * Clear from the cursor to the end of the cursor's line.
2017: * {{ This must not move the cursor. }}
2018: */
2019: public void
2020: clear_eol()
2021: {
1.11 millert 2022: #if !MSDOS_COMPILER
1.1 etheisen 2023: tputs(sc_eol_clear, 1, putchr);
1.11 millert 2024: #else
2025: #if MSDOS_COMPILER==MSOFTC
2026: short top, left;
2027: short bot, right;
2028: struct rccoord tpos;
2029:
2030: flush();
2031: /*
2032: * Save current state.
2033: */
2034: tpos = _gettextposition();
2035: _gettextwindow(&top, &left, &bot, &right);
2036: /*
2037: * Set a temporary window to the current line,
2038: * from the cursor's position to the right edge of the screen.
2039: * Then clear that window.
2040: */
2041: _settextwindow(tpos.row, tpos.col, tpos.row, sc_width);
2042: _clearscreen(_GWINDOW);
2043: /*
2044: * Restore state.
2045: */
2046: _settextwindow(top, left, bot, right);
2047: _settextposition(tpos.row, tpos.col);
2048: #else
2049: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2050: flush();
2051: clreol();
2052: #else
2053: #if MSDOS_COMPILER==WIN32C
2054: DWORD nchars;
2055: COORD cpos;
2056: CONSOLE_SCREEN_BUFFER_INFO scr;
2057:
2058: flush();
2059: memset(&scr, 0, sizeof(scr));
2060: GetConsoleScreenBufferInfo(con_out, &scr);
2061: cpos.X = scr.dwCursorPosition.X;
2062: cpos.Y = scr.dwCursorPosition.Y;
2063: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
2064: FillConsoleOutputAttribute(con_out, curr_attr,
2065: scr.dwSize.X - cpos.X, cpos, &nchars);
2066: FillConsoleOutputCharacter(con_out, ' ',
2067: scr.dwSize.X - cpos.X, cpos, &nchars);
2068: #endif
2069: #endif
2070: #endif
2071: #endif
2072: }
2073:
2074: /*
2075: * Clear the current line.
2076: * Clear the screen if there's off-screen memory below the display.
2077: */
2078: static void
2079: clear_eol_bot()
2080: {
2081: #if MSDOS_COMPILER
2082: clear_eol();
2083: #else
2084: if (below_mem)
2085: tputs(sc_eos_clear, 1, putchr);
2086: else
2087: tputs(sc_eol_clear, 1, putchr);
2088: #endif
1.1 etheisen 2089: }
2090:
2091: /*
2092: * Clear the bottom line of the display.
2093: * Leave the cursor at the beginning of the bottom line.
2094: */
2095: public void
2096: clear_bot()
2097: {
1.11 millert 2098: /*
2099: * If we're in a non-normal attribute mode, temporarily exit
2100: * the mode while we do the clear. Some terminals fill the
2101: * cleared area with the current attribute.
2102: */
1.1 etheisen 2103: lower_left();
1.11 millert 2104: switch (attrmode)
2105: {
2106: case AT_STANDOUT:
2107: so_exit();
2108: clear_eol_bot();
2109: so_enter();
2110: break;
2111: case AT_UNDERLINE:
2112: ul_exit();
2113: clear_eol_bot();
2114: ul_enter();
2115: break;
2116: case AT_BOLD:
2117: bo_exit();
2118: clear_eol_bot();
2119: bo_enter();
2120: break;
2121: case AT_BLINK:
2122: bl_exit();
2123: clear_eol_bot();
2124: bl_enter();
2125: break;
2126: default:
2127: clear_eol_bot();
2128: break;
2129: }
1.1 etheisen 2130: }
2131:
2132: /*
2133: * Begin "standout" (bold, underline, or whatever).
2134: */
2135: public void
2136: so_enter()
2137: {
1.11 millert 2138: #if !MSDOS_COMPILER
1.1 etheisen 2139: tputs(sc_s_in, 1, putchr);
1.11 millert 2140: #else
2141: flush();
2142: SETCOLORS(so_fg_color, so_bg_color);
2143: #endif
2144: attrmode = AT_STANDOUT;
1.1 etheisen 2145: }
2146:
2147: /*
2148: * End "standout".
2149: */
2150: public void
2151: so_exit()
2152: {
1.11 millert 2153: #if !MSDOS_COMPILER
1.1 etheisen 2154: tputs(sc_s_out, 1, putchr);
1.11 millert 2155: #else
2156: flush();
2157: SETCOLORS(nm_fg_color, nm_bg_color);
2158: #endif
2159: attrmode = AT_NORMAL;
1.1 etheisen 2160: }
2161:
2162: /*
2163: * Begin "underline" (hopefully real underlining,
2164: * otherwise whatever the terminal provides).
2165: */
2166: public void
2167: ul_enter()
2168: {
1.11 millert 2169: #if !MSDOS_COMPILER
1.1 etheisen 2170: tputs(sc_u_in, 1, putchr);
1.11 millert 2171: #else
2172: flush();
2173: SETCOLORS(ul_fg_color, ul_bg_color);
2174: #endif
2175: attrmode = AT_UNDERLINE;
1.1 etheisen 2176: }
2177:
2178: /*
2179: * End "underline".
2180: */
2181: public void
2182: ul_exit()
2183: {
1.11 millert 2184: #if !MSDOS_COMPILER
1.1 etheisen 2185: tputs(sc_u_out, 1, putchr);
1.11 millert 2186: #else
2187: flush();
2188: SETCOLORS(nm_fg_color, nm_bg_color);
2189: #endif
2190: attrmode = AT_NORMAL;
1.1 etheisen 2191: }
2192:
2193: /*
2194: * Begin "bold"
2195: */
2196: public void
2197: bo_enter()
2198: {
1.11 millert 2199: #if !MSDOS_COMPILER
1.1 etheisen 2200: tputs(sc_b_in, 1, putchr);
1.11 millert 2201: #else
2202: flush();
2203: SETCOLORS(bo_fg_color, bo_bg_color);
2204: #endif
2205: attrmode = AT_BOLD;
1.1 etheisen 2206: }
2207:
2208: /*
2209: * End "bold".
2210: */
2211: public void
2212: bo_exit()
2213: {
1.11 millert 2214: #if !MSDOS_COMPILER
1.1 etheisen 2215: tputs(sc_b_out, 1, putchr);
1.11 millert 2216: #else
2217: flush();
2218: SETCOLORS(nm_fg_color, nm_bg_color);
2219: #endif
2220: attrmode = AT_NORMAL;
1.1 etheisen 2221: }
2222:
2223: /*
2224: * Begin "blink"
2225: */
2226: public void
2227: bl_enter()
2228: {
1.11 millert 2229: #if !MSDOS_COMPILER
1.1 etheisen 2230: tputs(sc_bl_in, 1, putchr);
1.11 millert 2231: #else
2232: flush();
2233: SETCOLORS(bl_fg_color, bl_bg_color);
2234: #endif
2235: attrmode = AT_BLINK;
1.1 etheisen 2236: }
2237:
2238: /*
2239: * End "blink".
2240: */
2241: public void
2242: bl_exit()
2243: {
1.11 millert 2244: #if !MSDOS_COMPILER
1.1 etheisen 2245: tputs(sc_bl_out, 1, putchr);
1.11 millert 2246: #else
2247: flush();
2248: SETCOLORS(nm_fg_color, nm_bg_color);
2249: #endif
2250: attrmode = AT_NORMAL;
1.1 etheisen 2251: }
2252:
1.11 millert 2253: #if 0 /* No longer used */
1.1 etheisen 2254: /*
2255: * Erase the character to the left of the cursor
2256: * and move the cursor left.
2257: */
2258: public void
2259: backspace()
2260: {
1.11 millert 2261: #if !MSDOS_COMPILER
1.1 etheisen 2262: /*
1.11 millert 2263: * Erase the previous character by overstriking with a space.
1.1 etheisen 2264: */
2265: tputs(sc_backspace, 1, putchr);
2266: putchr(' ');
2267: tputs(sc_backspace, 1, putchr);
1.11 millert 2268: #else
2269: #if MSDOS_COMPILER==MSOFTC
2270: struct rccoord tpos;
2271:
2272: flush();
2273: tpos = _gettextposition();
2274: if (tpos.col <= 1)
2275: return;
2276: _settextposition(tpos.row, tpos.col-1);
2277: _outtext(" ");
2278: _settextposition(tpos.row, tpos.col-1);
2279: #else
2280: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2281: cputs("\b");
2282: #else
2283: #if MSDOS_COMPILER==WIN32C
2284: COORD cpos;
2285: DWORD cChars;
2286: CONSOLE_SCREEN_BUFFER_INFO scr;
2287:
2288: flush();
2289: GetConsoleScreenBufferInfo(con_out, &scr);
2290: cpos = scr.dwCursorPosition;
2291: if (cpos.X <= 0)
2292: return;
2293: cpos.X--;
2294: SetConsoleCursorPosition(con_out, cpos);
2295: FillConsoleOutputCharacter(con_out, (TCHAR)' ', 1, cpos, &cChars);
2296: SetConsoleCursorPosition(con_out, cpos);
2297: #endif
2298: #endif
2299: #endif
2300: #endif
1.1 etheisen 2301: }
1.11 millert 2302: #endif /* 0 */
1.1 etheisen 2303:
2304: /*
2305: * Output a plain backspace, without erasing the previous char.
2306: */
2307: public void
2308: putbs()
2309: {
1.11 millert 2310: #if !MSDOS_COMPILER
1.1 etheisen 2311: tputs(sc_backspace, 1, putchr);
1.11 millert 2312: #else
2313: int row, col;
2314:
2315: flush();
2316: {
2317: #if MSDOS_COMPILER==MSOFTC
2318: struct rccoord tpos;
2319: tpos = _gettextposition();
2320: row = tpos.row;
2321: col = tpos.col;
2322: #else
2323: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2324: row = wherey();
2325: col = wherex();
2326: #else
2327: #if MSDOS_COMPILER==WIN32C
2328: CONSOLE_SCREEN_BUFFER_INFO scr;
2329: GetConsoleScreenBufferInfo(con_out, &scr);
2330: row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
2331: col = scr.dwCursorPosition.X - scr.srWindow.Left + 1;
2332: #endif
2333: #endif
2334: #endif
2335: }
2336: if (col <= 1)
2337: return;
2338: _settextposition(row, col-1);
2339: #endif /* MSDOS_COMPILER */
1.1 etheisen 2340: }
1.11 millert 2341:
2342: #if MSDOS_COMPILER==WIN32C
2343: /*
2344: * Determine whether an input character is waiting to be read.
2345: */
2346: static int
2347: win32_kbhit(tty)
2348: HANDLE tty;
2349: {
2350: INPUT_RECORD ip;
2351: DWORD read;
2352:
2353: if (keyCount > 0)
2354: return (TRUE);
2355:
2356: currentKey.ascii = 0;
2357: currentKey.scan = 0;
2358:
2359: /*
2360: * Wait for a real key-down event, but
2361: * ignore SHIFT and CONTROL key events.
2362: */
2363: do
2364: {
2365: PeekConsoleInput(tty, &ip, 1, &read);
2366: if (read == 0)
2367: return (FALSE);
2368: ReadConsoleInput(tty, &ip, 1, &read);
2369: } while (ip.EventType != KEY_EVENT ||
2370: ip.Event.KeyEvent.bKeyDown != TRUE ||
2371: ip.Event.KeyEvent.wVirtualScanCode == 0 ||
2372: ip.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT ||
2373: ip.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL ||
2374: ip.Event.KeyEvent.wVirtualKeyCode == VK_MENU);
2375:
2376: currentKey.ascii = ip.Event.KeyEvent.uChar.AsciiChar;
2377: currentKey.scan = ip.Event.KeyEvent.wVirtualScanCode;
2378: keyCount = ip.Event.KeyEvent.wRepeatCount;
2379:
2380: if (ip.Event.KeyEvent.dwControlKeyState &
2381: (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED))
2382: {
2383: switch (currentKey.scan)
2384: {
2385: case PCK_ALT_E: /* letter 'E' */
2386: currentKey.ascii = 0;
2387: break;
2388: }
2389: } else if (ip.Event.KeyEvent.dwControlKeyState &
2390: (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
2391: {
2392: switch (currentKey.scan)
2393: {
2394: case PCK_RIGHT: /* right arrow */
2395: currentKey.scan = PCK_CTL_RIGHT;
2396: break;
2397: case PCK_LEFT: /* left arrow */
2398: currentKey.scan = PCK_CTL_LEFT;
2399: break;
2400: case PCK_DELETE: /* delete */
2401: currentKey.scan = PCK_CTL_DELETE;
2402: break;
2403: }
2404: }
2405: return (TRUE);
2406: }
2407:
2408: /*
2409: * Read a character from the keyboard.
2410: */
2411: public char
2412: WIN32getch(tty)
2413: int tty;
2414: {
2415: int ascii;
2416:
2417: if (pending_scancode)
2418: {
2419: pending_scancode = 0;
2420: return ((char)(currentKey.scan & 0x00FF));
2421: }
2422:
2423: while (win32_kbhit((HANDLE)tty) == FALSE)
2424: {
2425: Sleep(20);
2426: if (ABORT_SIGS())
2427: return ('\003');
2428: continue;
2429: }
2430: keyCount --;
2431: ascii = currentKey.ascii;
2432: /*
2433: * On PC's, the extended keys return a 2 byte sequence beginning
2434: * with '00', so if the ascii code is 00, the next byte will be
2435: * the lsb of the scan code.
2436: */
2437: pending_scancode = (ascii == 0x00);
2438: return ((char)ascii);
2439: }
2440: #endif
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