Annotation of src/usr.bin/less/screen.c, Revision 1.1.1.3
1.1 etheisen 1: /*
1.1.1.3 ! shadchin 2: * Copyright (C) 1984-2011 Mark Nudelman
1.1 etheisen 3: *
1.1.1.2 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: *
1.1.1.2 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:
1.1.1.2 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:
1.1.1.3 ! shadchin 41: #if HAVE_SYS_IOCTL_H
1.1 etheisen 42: #include <sys/ioctl.h>
43: #endif
1.1.1.3 ! shadchin 44:
! 45: #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
! 46: #include <termios.h>
1.1 etheisen 47: #else
48: #if HAVE_TERMIO_H
49: #include <termio.h>
50: #else
1.1.1.2 millert 51: #if HAVE_SGSTAT_H
52: #include <sgstat.h>
53: #else
1.1 etheisen 54: #include <sgtty.h>
1.1.1.2 millert 55: #endif
1.1 etheisen 56: #endif
57: #endif
1.1.1.2 millert 58:
1.1 etheisen 59: #if HAVE_TERMCAP_H
60: #include <termcap.h>
61: #endif
1.1.1.2 millert 62: #ifdef _OSK
63: #include <signal.h>
1.1 etheisen 64: #endif
1.1.1.2 millert 65: #if OS2
66: #include <sys/signal.h>
67: #include "pckeys.h"
1.1 etheisen 68: #endif
69: #if HAVE_SYS_STREAM_H
70: #include <sys/stream.h>
71: #endif
72: #if HAVE_SYS_PTEM_H
73: #include <sys/ptem.h>
74: #endif
75:
1.1.1.2 millert 76: #endif /* MSDOS_COMPILER */
77:
78: /*
79: * Check for broken termios package that forces you to manually
80: * set the line discipline.
81: */
82: #ifdef __ultrix__
83: #define MUST_SET_LINE_DISCIPLINE 1
84: #else
85: #define MUST_SET_LINE_DISCIPLINE 0
86: #endif
87:
1.1 etheisen 88: #if OS2
89: #define DEFAULT_TERM "ansi"
1.1.1.2 millert 90: static char *windowid;
1.1 etheisen 91: #else
92: #define DEFAULT_TERM "unknown"
93: #endif
94:
1.1.1.2 millert 95: #if MSDOS_COMPILER==MSOFTC
96: static int videopages;
97: static long msec_loops;
98: static int flash_created = 0;
99: #define SETCOLORS(fg,bg) { _settextcolor(fg); _setbkcolor(bg); }
100: #endif
101:
102: #if MSDOS_COMPILER==BORLANDC
103: static unsigned short *whitescreen;
104: static int flash_created = 0;
105: #endif
106: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
107: #define _settextposition(y,x) gotoxy(x,y)
108: #define _clearscreen(m) clrscr()
109: #define _outtext(s) cputs(s)
110: #define SETCOLORS(fg,bg) { textcolor(fg); textbackground(bg); }
111: extern int sc_height;
112: #endif
113:
114: #if MSDOS_COMPILER==WIN32C
115: struct keyRecord
116: {
117: int ascii;
118: int scan;
119: } currentKey;
120:
121: static int keyCount = 0;
122: static WORD curr_attr;
123: static int pending_scancode = 0;
124: static WORD *whitescreen;
125:
126: static HANDLE con_out_save = INVALID_HANDLE_VALUE; /* previous console */
127: static HANDLE con_out_ours = INVALID_HANDLE_VALUE; /* our own */
128: HANDLE con_out = INVALID_HANDLE_VALUE; /* current console */
129:
130: extern int quitting;
131: static void win32_init_term();
132: static void win32_deinit_term();
133:
134: #define FG_COLORS (FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY)
135: #define BG_COLORS (BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE | BACKGROUND_INTENSITY)
136: #define MAKEATTR(fg,bg) ((WORD)((fg)|((bg)<<4)))
137: #define SETCOLORS(fg,bg) { curr_attr = MAKEATTR(fg,bg); \
138: if (SetConsoleTextAttribute(con_out, curr_attr) == 0) \
139: error("SETCOLORS failed"); }
140: #endif
141:
142: #if MSDOS_COMPILER
143: public int nm_fg_color; /* Color of normal text */
144: public int nm_bg_color;
145: public int bo_fg_color; /* Color of bold text */
146: public int bo_bg_color;
147: public int ul_fg_color; /* Color of underlined text */
148: public int ul_bg_color;
149: public int so_fg_color; /* Color of standout text */
150: public int so_bg_color;
151: public int bl_fg_color; /* Color of blinking text */
152: public int bl_bg_color;
153: static int sy_fg_color; /* Color of system text (before less) */
154: static int sy_bg_color;
155:
156: #else
157:
1.1 etheisen 158: /*
159: * Strings passed to tputs() to do various terminal functions.
160: */
161: static char
162: *sc_pad, /* Pad string */
163: *sc_home, /* Cursor home */
164: *sc_addline, /* Add line, scroll down following lines */
165: *sc_lower_left, /* Cursor to last line, first column */
1.1.1.3 ! shadchin 166: *sc_return, /* Cursor to beginning of current line */
1.1 etheisen 167: *sc_move, /* General cursor positioning */
168: *sc_clear, /* Clear screen */
169: *sc_eol_clear, /* Clear to end of line */
170: *sc_eos_clear, /* Clear to end of screen */
171: *sc_s_in, /* Enter standout (highlighted) mode */
172: *sc_s_out, /* Exit standout mode */
173: *sc_u_in, /* Enter underline mode */
174: *sc_u_out, /* Exit underline mode */
175: *sc_b_in, /* Enter bold mode */
176: *sc_b_out, /* Exit bold mode */
177: *sc_bl_in, /* Enter blink mode */
178: *sc_bl_out, /* Exit blink mode */
179: *sc_visual_bell, /* Visual bell (flash screen) sequence */
180: *sc_backspace, /* Backspace cursor */
181: *sc_s_keypad, /* Start keypad mode */
182: *sc_e_keypad, /* End keypad mode */
183: *sc_init, /* Startup terminal initialization */
184: *sc_deinit; /* Exit terminal de-initialization */
1.1.1.2 millert 185: #endif
1.1 etheisen 186:
187: static int init_done = 0;
188:
189: public int auto_wrap; /* Terminal does \r\n when write past margin */
190: public int ignaw; /* Terminal ignores \n immediately after wrap */
1.1.1.3 ! shadchin 191: public int erase_char; /* The user's erase char */
! 192: public int erase2_char; /* The user's other erase char */
! 193: public int kill_char; /* The user's line-kill char */
1.1 etheisen 194: public int werase_char; /* The user's word-erase char */
195: public int sc_width, sc_height; /* Height & width of screen */
196: public int bo_s_width, bo_e_width; /* Printing width of boldface seq */
197: public int ul_s_width, ul_e_width; /* Printing width of underline seq */
198: public int so_s_width, so_e_width; /* Printing width of standout seq */
199: public int bl_s_width, bl_e_width; /* Printing width of blink seq */
200: public int above_mem, below_mem; /* Memory retained above/below screen */
201: public int can_goto_line; /* Can move cursor to any line */
1.1.1.2 millert 202: public int clear_bg; /* Clear fills with background color */
203: public int missing_cap = 0; /* Some capability is missing */
1.1 etheisen 204:
1.1.1.2 millert 205: static int attrmode = AT_NORMAL;
1.1.1.3 ! shadchin 206: extern int binattr;
1.1.1.2 millert 207:
208: #if !MSDOS_COMPILER
1.1 etheisen 209: static char *cheaper();
1.1.1.2 millert 210: static void tmodes();
211: #endif
1.1 etheisen 212:
213: /*
214: * These two variables are sometimes defined in,
215: * and needed by, the termcap library.
216: */
217: #if MUST_DEFINE_OSPEED
218: extern short ospeed; /* Terminal output baud rate */
219: extern char PC; /* Pad character */
220: #endif
1.1.1.2 millert 221: #ifdef _OSK
222: short ospeed;
223: char PC_, *UP, *BC;
224: #endif
1.1 etheisen 225:
226: extern int quiet; /* If VERY_QUIET, use visual bell for bell */
1.1.1.2 millert 227: extern int no_back_scroll;
1.1 etheisen 228: extern int swindow;
229: extern int no_init;
1.1.1.2 millert 230: extern int no_keypad;
231: extern int sigs;
232: extern int wscroll;
233: extern int screen_trashed;
234: extern int tty;
1.1.1.3 ! shadchin 235: extern int top_scroll;
! 236: extern int oldbot;
1.1 etheisen 237: #if HILITE_SEARCH
238: extern int hilite_search;
239: #endif
240:
241: extern char *tgetstr();
242: extern char *tgoto();
243:
244:
245: /*
246: * Change terminal to "raw mode", or restore to "normal" mode.
247: * "Raw mode" means
248: * 1. An outstanding read will complete on receipt of a single keystroke.
249: * 2. Input is not echoed.
250: * 3. On output, \n is mapped to \r\n.
251: * 4. \t is NOT expanded into spaces.
252: * 5. Signal-causing characters such as ctrl-C (interrupt),
253: * etc. are NOT disabled.
254: * It doesn't matter whether an input \n is mapped to \r, or vice versa.
255: */
256: public void
257: raw_mode(on)
258: int on;
259: {
260: static int curr_on = 0;
261:
262: if (on == curr_on)
263: return;
1.1.1.3 ! shadchin 264: erase2_char = '\b'; /* in case OS doesn't know about erase2 */
1.1 etheisen 265: #if HAVE_TERMIOS_H && HAVE_TERMIOS_FUNCS
266: {
267: struct termios s;
268: static struct termios save_term;
1.1.1.2 millert 269: static int saved_term = 0;
1.1 etheisen 270:
271: if (on)
272: {
273: /*
274: * Get terminal modes.
275: */
1.1.1.2 millert 276: tcgetattr(tty, &s);
1.1 etheisen 277:
278: /*
279: * Save modes and set certain variables dependent on modes.
280: */
1.1.1.2 millert 281: if (!saved_term)
282: {
283: save_term = s;
284: saved_term = 1;
285: }
1.1 etheisen 286: #if HAVE_OSPEED
287: switch (cfgetospeed(&s))
288: {
289: #ifdef B0
290: case B0: ospeed = 0; break;
291: #endif
292: #ifdef B50
293: case B50: ospeed = 1; break;
294: #endif
295: #ifdef B75
296: case B75: ospeed = 2; break;
297: #endif
298: #ifdef B110
299: case B110: ospeed = 3; break;
300: #endif
301: #ifdef B134
302: case B134: ospeed = 4; break;
303: #endif
304: #ifdef B150
305: case B150: ospeed = 5; break;
306: #endif
307: #ifdef B200
308: case B200: ospeed = 6; break;
309: #endif
310: #ifdef B300
311: case B300: ospeed = 7; break;
312: #endif
313: #ifdef B600
314: case B600: ospeed = 8; break;
315: #endif
316: #ifdef B1200
317: case B1200: ospeed = 9; break;
318: #endif
319: #ifdef B1800
320: case B1800: ospeed = 10; break;
321: #endif
322: #ifdef B2400
323: case B2400: ospeed = 11; break;
324: #endif
325: #ifdef B4800
326: case B4800: ospeed = 12; break;
327: #endif
328: #ifdef B9600
329: case B9600: ospeed = 13; break;
330: #endif
331: #ifdef EXTA
332: case EXTA: ospeed = 14; break;
333: #endif
334: #ifdef EXTB
335: case EXTB: ospeed = 15; break;
336: #endif
337: #ifdef B57600
338: case B57600: ospeed = 16; break;
339: #endif
340: #ifdef B115200
341: case B115200: ospeed = 17; break;
342: #endif
343: default: ;
344: }
345: #endif
346: erase_char = s.c_cc[VERASE];
1.1.1.3 ! shadchin 347: #ifdef VERASE2
! 348: erase2_char = s.c_cc[VERASE2];
! 349: #endif
1.1 etheisen 350: kill_char = s.c_cc[VKILL];
351: #ifdef VWERASE
352: werase_char = s.c_cc[VWERASE];
353: #else
1.1.1.2 millert 354: werase_char = CONTROL('W');
1.1 etheisen 355: #endif
356:
357: /*
358: * Set the modes to the way we want them.
359: */
360: s.c_lflag &= ~(0
361: #ifdef ICANON
362: | ICANON
363: #endif
364: #ifdef ECHO
365: | ECHO
366: #endif
367: #ifdef ECHOE
368: | ECHOE
369: #endif
370: #ifdef ECHOK
371: | ECHOK
372: #endif
373: #if ECHONL
374: | ECHONL
375: #endif
376: );
377:
378: s.c_oflag |= (0
1.1.1.2 millert 379: #ifdef OXTABS
380: | OXTABS
1.1 etheisen 381: #else
382: #ifdef TAB3
383: | TAB3
384: #else
1.1.1.2 millert 385: #ifdef XTABS
386: | XTABS
1.1 etheisen 387: #endif
388: #endif
389: #endif
390: #ifdef OPOST
391: | OPOST
392: #endif
393: #ifdef ONLCR
394: | ONLCR
395: #endif
396: );
397:
398: s.c_oflag &= ~(0
399: #ifdef ONOEOT
400: | ONOEOT
401: #endif
402: #ifdef OCRNL
403: | OCRNL
404: #endif
405: #ifdef ONOCR
406: | ONOCR
407: #endif
408: #ifdef ONLRET
409: | ONLRET
410: #endif
411: );
412: s.c_cc[VMIN] = 1;
413: s.c_cc[VTIME] = 0;
1.1.1.2 millert 414: #ifdef VLNEXT
415: s.c_cc[VLNEXT] = 0;
416: #endif
417: #ifdef VDSUSP
418: s.c_cc[VDSUSP] = 0;
419: #endif
420: #if MUST_SET_LINE_DISCIPLINE
421: /*
422: * System's termios is broken; need to explicitly
423: * request TERMIODISC line discipline.
424: */
425: s.c_line = TERMIODISC;
426: #endif
1.1 etheisen 427: } else
428: {
429: /*
430: * Restore saved modes.
431: */
432: s = save_term;
433: }
1.1.1.2 millert 434: #if HAVE_FSYNC
435: fsync(tty);
436: #endif
437: tcsetattr(tty, TCSADRAIN, &s);
438: #if MUST_SET_LINE_DISCIPLINE
439: if (!on)
440: {
441: /*
442: * Broken termios *ignores* any line discipline
443: * except TERMIODISC. A different old line discipline
444: * is therefore not restored, yet. Restore the old
445: * line discipline by hand.
446: */
447: ioctl(tty, TIOCSETD, &save_term.c_line);
448: }
449: #endif
1.1 etheisen 450: }
451: #else
452: #ifdef TCGETA
453: {
454: struct termio s;
455: static struct termio save_term;
1.1.1.2 millert 456: static int saved_term = 0;
1.1 etheisen 457:
458: if (on)
459: {
460: /*
461: * Get terminal modes.
462: */
1.1.1.2 millert 463: ioctl(tty, TCGETA, &s);
1.1 etheisen 464:
465: /*
466: * Save modes and set certain variables dependent on modes.
467: */
1.1.1.2 millert 468: if (!saved_term)
469: {
470: save_term = s;
471: saved_term = 1;
472: }
1.1 etheisen 473: #if HAVE_OSPEED
474: ospeed = s.c_cflag & CBAUD;
475: #endif
476: erase_char = s.c_cc[VERASE];
477: kill_char = s.c_cc[VKILL];
478: #ifdef VWERASE
479: werase_char = s.c_cc[VWERASE];
480: #else
1.1.1.2 millert 481: werase_char = CONTROL('W');
1.1 etheisen 482: #endif
483:
484: /*
485: * Set the modes to the way we want them.
486: */
487: s.c_lflag &= ~(ICANON|ECHO|ECHOE|ECHOK|ECHONL);
488: s.c_oflag |= (OPOST|ONLCR|TAB3);
489: s.c_oflag &= ~(OCRNL|ONOCR|ONLRET);
490: s.c_cc[VMIN] = 1;
491: s.c_cc[VTIME] = 0;
492: } else
493: {
494: /*
495: * Restore saved modes.
496: */
497: s = save_term;
498: }
1.1.1.2 millert 499: ioctl(tty, TCSETAW, &s);
1.1 etheisen 500: }
501: #else
1.1.1.2 millert 502: #ifdef TIOCGETP
1.1 etheisen 503: {
504: struct sgttyb s;
505: static struct sgttyb save_term;
1.1.1.2 millert 506: static int saved_term = 0;
1.1 etheisen 507:
508: if (on)
509: {
510: /*
511: * Get terminal modes.
512: */
1.1.1.2 millert 513: ioctl(tty, TIOCGETP, &s);
1.1 etheisen 514:
515: /*
516: * Save modes and set certain variables dependent on modes.
517: */
1.1.1.2 millert 518: if (!saved_term)
519: {
520: save_term = s;
521: saved_term = 1;
522: }
1.1 etheisen 523: #if HAVE_OSPEED
524: ospeed = s.sg_ospeed;
525: #endif
526: erase_char = s.sg_erase;
527: kill_char = s.sg_kill;
1.1.1.2 millert 528: werase_char = CONTROL('W');
1.1 etheisen 529:
530: /*
531: * Set the modes to the way we want them.
532: */
533: s.sg_flags |= CBREAK;
534: s.sg_flags &= ~(ECHO|XTABS);
535: } else
536: {
537: /*
538: * Restore saved modes.
539: */
540: s = save_term;
541: }
1.1.1.2 millert 542: ioctl(tty, TIOCSETN, &s);
543: }
544: #else
545: #ifdef _OSK
546: {
547: struct sgbuf s;
548: static struct sgbuf save_term;
549: static int saved_term = 0;
550:
551: if (on)
552: {
553: /*
554: * Get terminal modes.
555: */
556: _gs_opt(tty, &s);
557:
558: /*
559: * Save modes and set certain variables dependent on modes.
560: */
561: if (!saved_term)
562: {
563: save_term = s;
564: saved_term = 1;
565: }
566: erase_char = s.sg_bspch;
567: kill_char = s.sg_dlnch;
568: werase_char = CONTROL('W');
569:
570: /*
571: * Set the modes to the way we want them.
572: */
573: s.sg_echo = 0;
574: s.sg_eofch = 0;
575: s.sg_pause = 0;
576: s.sg_psch = 0;
577: } else
578: {
579: /*
580: * Restore saved modes.
581: */
582: s = save_term;
583: }
584: _ss_opt(tty, &s);
1.1 etheisen 585: }
1.1.1.2 millert 586: #else
587: /* MS-DOS, Windows, or OS2 */
588: #if OS2
589: /* OS2 */
590: LSIGNAL(SIGINT, SIG_IGN);
591: #endif
592: erase_char = '\b';
593: #if MSDOS_COMPILER==DJGPPC
594: kill_char = CONTROL('U');
595: /*
596: * So that when we shell out or run another program, its
597: * stdin is in cooked mode. We do not switch stdin to binary
598: * mode if fd0 is zero, since that means we were called before
599: * tty was reopened in open_getchr, in which case we would be
600: * changing the original stdin device outside less.
601: */
602: if (fd0 != 0)
603: setmode(0, on ? O_BINARY : O_TEXT);
604: #else
605: kill_char = ESC;
606: #endif
607: werase_char = CONTROL('W');
608: #endif
1.1 etheisen 609: #endif
610: #endif
611: #endif
612: curr_on = on;
613: }
614:
1.1.1.2 millert 615: #if !MSDOS_COMPILER
616: /*
617: * Some glue to prevent calling termcap functions if tgetent() failed.
618: */
619: static int hardcopy;
1.1 etheisen 620:
1.1.1.2 millert 621: static char *
622: ltget_env(capname)
623: char *capname;
624: {
625: char name[16];
1.1.1.3 ! shadchin 626: char *s;
1.1 etheisen 627:
1.1.1.3 ! shadchin 628: s = lgetenv("LESS_TERMCAP_DEBUG");
! 629: if (s != NULL && *s != '\0')
! 630: {
! 631: struct env { struct env *next; char *name; char *value; };
! 632: static struct env *envs = NULL;
! 633: struct env *p;
! 634: for (p = envs; p != NULL; p = p->next)
! 635: if (strcmp(p->name, capname) == 0)
! 636: return p->value;
! 637: p = (struct env *) ecalloc(1, sizeof(struct env));
! 638: p->name = save(capname);
! 639: p->value = (char *) ecalloc(strlen(capname)+3, sizeof(char));
! 640: sprintf(p->value, "<%s>", capname);
! 641: p->next = envs;
! 642: envs = p;
! 643: return p->value;
! 644: }
1.1.1.2 millert 645: strcpy(name, "LESS_TERMCAP_");
646: strcat(name, capname);
647: return (lgetenv(name));
1.1 etheisen 648: }
649:
1.1.1.2 millert 650: static int
651: ltgetflag(capname)
652: char *capname;
1.1 etheisen 653: {
1.1.1.2 millert 654: char *s;
1.1 etheisen 655:
1.1.1.2 millert 656: if ((s = ltget_env(capname)) != NULL)
657: return (*s != '\0' && *s != '0');
658: if (hardcopy)
659: return (0);
660: return (tgetflag(capname));
1.1 etheisen 661: }
662:
1.1.1.2 millert 663: static int
664: ltgetnum(capname)
665: char *capname;
1.1 etheisen 666: {
1.1.1.2 millert 667: char *s;
1.1 etheisen 668:
1.1.1.2 millert 669: if ((s = ltget_env(capname)) != NULL)
670: return (atoi(s));
671: if (hardcopy)
672: return (-1);
673: return (tgetnum(capname));
674: }
1.1 etheisen 675:
1.1.1.2 millert 676: static char *
677: ltgetstr(capname, pp)
678: char *capname;
679: char **pp;
680: {
681: char *s;
1.1 etheisen 682:
1.1.1.2 millert 683: if ((s = ltget_env(capname)) != NULL)
684: return (s);
685: if (hardcopy)
686: return (NULL);
687: return (tgetstr(capname, pp));
1.1 etheisen 688: }
1.1.1.2 millert 689: #endif /* MSDOS_COMPILER */
1.1 etheisen 690:
691: /*
1.1.1.2 millert 692: * Get size of the output screen.
1.1 etheisen 693: */
694: public void
1.1.1.2 millert 695: scrsize()
1.1 etheisen 696: {
1.1.1.2 millert 697: register char *s;
698: int sys_height;
699: int sys_width;
700: #if !MSDOS_COMPILER
701: int n;
702: #endif
1.1 etheisen 703:
1.1.1.2 millert 704: #define DEF_SC_WIDTH 80
705: #if MSDOS_COMPILER
706: #define DEF_SC_HEIGHT 25
707: #else
708: #define DEF_SC_HEIGHT 24
709: #endif
1.1 etheisen 710:
711:
1.1.1.2 millert 712: sys_width = sys_height = 0;
1.1 etheisen 713:
1.1.1.2 millert 714: #if MSDOS_COMPILER==MSOFTC
1.1 etheisen 715: {
1.1.1.2 millert 716: struct videoconfig w;
717: _getvideoconfig(&w);
718: sys_height = w.numtextrows;
719: sys_width = w.numtextcols;
1.1 etheisen 720: }
1.1.1.2 millert 721: #else
722: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1.1 etheisen 723: {
1.1.1.2 millert 724: struct text_info w;
725: gettextinfo(&w);
726: sys_height = w.screenheight;
727: sys_width = w.screenwidth;
1.1 etheisen 728: }
1.1.1.2 millert 729: #else
730: #if MSDOS_COMPILER==WIN32C
1.1 etheisen 731: {
1.1.1.2 millert 732: CONSOLE_SCREEN_BUFFER_INFO scr;
733: GetConsoleScreenBufferInfo(con_out, &scr);
734: sys_height = scr.srWindow.Bottom - scr.srWindow.Top + 1;
735: sys_width = scr.srWindow.Right - scr.srWindow.Left + 1;
1.1 etheisen 736: }
1.1.1.2 millert 737: #else
738: #if OS2
1.1 etheisen 739: {
1.1.1.2 millert 740: int s[2];
741: _scrsize(s);
742: sys_width = s[0];
743: sys_height = s[1];
744: /*
745: * When using terminal emulators for XFree86/OS2, the
746: * _scrsize function does not work well.
747: * Call the scrsize.exe program to get the window size.
748: */
749: windowid = getenv("WINDOWID");
750: if (windowid != NULL)
751: {
752: FILE *fd = popen("scrsize", "rt");
753: if (fd != NULL)
754: {
755: int w, h;
756: fscanf(fd, "%i %i", &w, &h);
757: if (w > 0 && h > 0)
758: {
759: sys_width = w;
760: sys_height = h;
761: }
762: pclose(fd);
763: }
764: }
1.1 etheisen 765: }
1.1.1.2 millert 766: #else
767: #ifdef TIOCGWINSZ
1.1 etheisen 768: {
1.1.1.2 millert 769: struct winsize w;
770: if (ioctl(2, TIOCGWINSZ, &w) == 0)
771: {
772: if (w.ws_row > 0)
773: sys_height = w.ws_row;
774: if (w.ws_col > 0)
775: sys_width = w.ws_col;
776: }
1.1 etheisen 777: }
1.1.1.2 millert 778: #else
779: #ifdef WIOCGETD
1.1 etheisen 780: {
1.1.1.2 millert 781: struct uwdata w;
782: if (ioctl(2, WIOCGETD, &w) == 0)
783: {
784: if (w.uw_height > 0)
785: sys_height = w.uw_height / w.uw_vs;
786: if (w.uw_width > 0)
787: sys_width = w.uw_width / w.uw_hs;
788: }
1.1 etheisen 789: }
1.1.1.2 millert 790: #endif
791: #endif
792: #endif
793: #endif
794: #endif
795: #endif
1.1 etheisen 796:
1.1.1.2 millert 797: if (sys_height > 0)
798: sc_height = sys_height;
799: else if ((s = lgetenv("LINES")) != NULL)
800: sc_height = atoi(s);
801: #if !MSDOS_COMPILER
802: else if ((n = ltgetnum("li")) > 0)
803: sc_height = n;
804: #endif
805: else
806: sc_height = DEF_SC_HEIGHT;
1.1 etheisen 807:
1.1.1.2 millert 808: if (sys_width > 0)
809: sc_width = sys_width;
810: else if ((s = lgetenv("COLUMNS")) != NULL)
811: sc_width = atoi(s);
812: #if !MSDOS_COMPILER
813: else if ((n = ltgetnum("co")) > 0)
814: sc_width = n;
815: #endif
816: else
817: sc_width = DEF_SC_WIDTH;
1.1 etheisen 818: }
819:
1.1.1.2 millert 820: #if MSDOS_COMPILER==MSOFTC
821: /*
822: * Figure out how many empty loops it takes to delay a millisecond.
823: */
1.1 etheisen 824: static void
1.1.1.2 millert 825: get_clock()
1.1 etheisen 826: {
1.1.1.2 millert 827: clock_t start;
828:
829: /*
830: * Get synchronized at the start of a tick.
831: */
832: start = clock();
833: while (clock() == start)
834: ;
835: /*
836: * Now count loops till the next tick.
837: */
838: start = clock();
839: msec_loops = 0;
840: while (clock() == start)
841: msec_loops++;
842: /*
843: * Convert from (loops per clock) to (loops per millisecond).
844: */
845: msec_loops *= CLOCKS_PER_SEC;
846: msec_loops /= 1000;
1.1 etheisen 847: }
848:
849: /*
1.1.1.2 millert 850: * Delay for a specified number of milliseconds.
1.1 etheisen 851: */
1.1.1.2 millert 852: static void
853: dummy_func()
1.1 etheisen 854: {
1.1.1.2 millert 855: static long delay_dummy = 0;
856: delay_dummy++;
857: }
1.1 etheisen 858:
1.1.1.2 millert 859: static void
860: delay(msec)
861: int msec;
862: {
863: long i;
864:
865: while (msec-- > 0)
1.1 etheisen 866: {
1.1.1.2 millert 867: for (i = 0; i < msec_loops; i++)
1.1 etheisen 868: {
1.1.1.2 millert 869: /*
870: * Make it look like we're doing something here,
871: * so the optimizer doesn't remove the whole loop.
872: */
873: dummy_func();
1.1 etheisen 874: }
875: }
1.1.1.2 millert 876: }
1.1 etheisen 877: #endif
878:
1.1.1.2 millert 879: /*
880: * Return the characters actually input by a "special" key.
881: */
882: public char *
883: special_key_str(key)
884: int key;
885: {
886: static char tbuf[40];
887: char *s;
888: #if MSDOS_COMPILER || OS2
889: static char k_right[] = { '\340', PCK_RIGHT, 0 };
890: static char k_left[] = { '\340', PCK_LEFT, 0 };
891: static char k_ctl_right[] = { '\340', PCK_CTL_RIGHT, 0 };
892: static char k_ctl_left[] = { '\340', PCK_CTL_LEFT, 0 };
893: static char k_insert[] = { '\340', PCK_INSERT, 0 };
894: static char k_delete[] = { '\340', PCK_DELETE, 0 };
895: static char k_ctl_delete[] = { '\340', PCK_CTL_DELETE, 0 };
896: static char k_ctl_backspace[] = { '\177', 0 };
897: static char k_home[] = { '\340', PCK_HOME, 0 };
898: static char k_end[] = { '\340', PCK_END, 0 };
899: static char k_up[] = { '\340', PCK_UP, 0 };
900: static char k_down[] = { '\340', PCK_DOWN, 0 };
901: static char k_backtab[] = { '\340', PCK_SHIFT_TAB, 0 };
902: static char k_pagedown[] = { '\340', PCK_PAGEDOWN, 0 };
903: static char k_pageup[] = { '\340', PCK_PAGEUP, 0 };
904: static char k_f1[] = { '\340', PCK_F1, 0 };
905: #endif
906: #if !MSDOS_COMPILER
907: char *sp = tbuf;
908: #endif
1.1 etheisen 909:
1.1.1.2 millert 910: switch (key)
911: {
912: #if OS2
1.1 etheisen 913: /*
1.1.1.2 millert 914: * If windowid is not NULL, assume less is executed in
915: * the XFree86 environment.
1.1 etheisen 916: */
1.1.1.2 millert 917: case SK_RIGHT_ARROW:
918: s = windowid ? ltgetstr("kr", &sp) : k_right;
919: break;
920: case SK_LEFT_ARROW:
921: s = windowid ? ltgetstr("kl", &sp) : k_left;
922: break;
923: case SK_UP_ARROW:
924: s = windowid ? ltgetstr("ku", &sp) : k_up;
925: break;
926: case SK_DOWN_ARROW:
927: s = windowid ? ltgetstr("kd", &sp) : k_down;
928: break;
929: case SK_PAGE_UP:
930: s = windowid ? ltgetstr("kP", &sp) : k_pageup;
931: break;
932: case SK_PAGE_DOWN:
933: s = windowid ? ltgetstr("kN", &sp) : k_pagedown;
934: break;
935: case SK_HOME:
936: s = windowid ? ltgetstr("kh", &sp) : k_home;
937: break;
938: case SK_END:
939: s = windowid ? ltgetstr("@7", &sp) : k_end;
940: break;
941: case SK_DELETE:
942: if (windowid)
943: {
944: s = ltgetstr("kD", &sp);
945: if (s == NULL)
946: {
947: tbuf[0] = '\177';
948: tbuf[1] = '\0';
949: s = tbuf;
950: }
951: } else
952: s = k_delete;
953: break;
954: #endif
955: #if MSDOS_COMPILER
956: case SK_RIGHT_ARROW:
957: s = k_right;
958: break;
959: case SK_LEFT_ARROW:
960: s = k_left;
961: break;
962: case SK_UP_ARROW:
963: s = k_up;
964: break;
965: case SK_DOWN_ARROW:
966: s = k_down;
967: break;
968: case SK_PAGE_UP:
969: s = k_pageup;
970: break;
971: case SK_PAGE_DOWN:
972: s = k_pagedown;
973: break;
974: case SK_HOME:
975: s = k_home;
976: break;
977: case SK_END:
978: s = k_end;
979: break;
980: case SK_DELETE:
981: s = k_delete;
982: break;
983: #endif
984: #if MSDOS_COMPILER || OS2
985: case SK_INSERT:
986: s = k_insert;
987: break;
988: case SK_CTL_LEFT_ARROW:
989: s = k_ctl_left;
990: break;
991: case SK_CTL_RIGHT_ARROW:
992: s = k_ctl_right;
993: break;
994: case SK_CTL_BACKSPACE:
995: s = k_ctl_backspace;
996: break;
997: case SK_CTL_DELETE:
998: s = k_ctl_delete;
999: break;
1000: case SK_F1:
1001: s = k_f1;
1002: break;
1003: case SK_BACKTAB:
1004: s = k_backtab;
1005: break;
1006: #else
1007: case SK_RIGHT_ARROW:
1008: s = ltgetstr("kr", &sp);
1009: break;
1010: case SK_LEFT_ARROW:
1011: s = ltgetstr("kl", &sp);
1012: break;
1013: case SK_UP_ARROW:
1014: s = ltgetstr("ku", &sp);
1015: break;
1016: case SK_DOWN_ARROW:
1017: s = ltgetstr("kd", &sp);
1018: break;
1019: case SK_PAGE_UP:
1020: s = ltgetstr("kP", &sp);
1021: break;
1022: case SK_PAGE_DOWN:
1023: s = ltgetstr("kN", &sp);
1024: break;
1025: case SK_HOME:
1026: s = ltgetstr("kh", &sp);
1027: break;
1028: case SK_END:
1029: s = ltgetstr("@7", &sp);
1030: break;
1031: case SK_DELETE:
1032: s = ltgetstr("kD", &sp);
1033: if (s == NULL)
1034: {
1035: tbuf[0] = '\177';
1036: tbuf[1] = '\0';
1037: s = tbuf;
1038: }
1039: break;
1040: #endif
1041: case SK_CONTROL_K:
1042: tbuf[0] = CONTROL('K');
1043: tbuf[1] = '\0';
1044: s = tbuf;
1045: break;
1046: default:
1047: return (NULL);
1048: }
1049: return (s);
1050: }
1051:
1052: /*
1053: * Get terminal capabilities via termcap.
1054: */
1055: public void
1056: get_term()
1057: {
1058: #if MSDOS_COMPILER
1059: auto_wrap = 1;
1060: ignaw = 0;
1061: can_goto_line = 1;
1062: clear_bg = 1;
1063: /*
1064: * Set up default colors.
1065: * The xx_s_width and xx_e_width vars are already initialized to 0.
1066: */
1067: #if MSDOS_COMPILER==MSOFTC
1068: sy_bg_color = _getbkcolor();
1069: sy_fg_color = _gettextcolor();
1070: get_clock();
1071: #else
1072: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1073: {
1074: struct text_info w;
1075: gettextinfo(&w);
1076: sy_bg_color = (w.attribute >> 4) & 0x0F;
1077: sy_fg_color = (w.attribute >> 0) & 0x0F;
1078: }
1079: #else
1080: #if MSDOS_COMPILER==WIN32C
1081: {
1082: DWORD nread;
1083: CONSOLE_SCREEN_BUFFER_INFO scr;
1084:
1085: con_out_save = con_out = GetStdHandle(STD_OUTPUT_HANDLE);
1086: /*
1087: * Always open stdin in binary. Note this *must* be done
1088: * before any file operations have been done on fd0.
1089: */
1090: SET_BINARY(0);
1091: GetConsoleScreenBufferInfo(con_out, &scr);
1092: ReadConsoleOutputAttribute(con_out, &curr_attr,
1093: 1, scr.dwCursorPosition, &nread);
1094: sy_bg_color = (curr_attr & BG_COLORS) >> 4; /* normalize */
1095: sy_fg_color = curr_attr & FG_COLORS;
1096: }
1097: #endif
1098: #endif
1099: #endif
1100: nm_fg_color = sy_fg_color;
1101: nm_bg_color = sy_bg_color;
1102: bo_fg_color = 11;
1103: bo_bg_color = 0;
1104: ul_fg_color = 9;
1105: ul_bg_color = 0;
1106: so_fg_color = 15;
1107: so_bg_color = 9;
1108: bl_fg_color = 15;
1109: bl_bg_color = 0;
1110:
1111: /*
1112: * Get size of the screen.
1113: */
1114: scrsize();
1115: pos_init();
1.1 etheisen 1116:
1.1.1.2 millert 1117:
1118: #else /* !MSDOS_COMPILER */
1119:
1120: char *sp;
1121: register char *t1, *t2;
1122: char *term;
1123: char termbuf[TERMBUF_SIZE];
1124:
1125: static char sbuf[TERMSBUF_SIZE];
1126:
1127: #if OS2
1128: /*
1129: * Make sure the termcap database is available.
1130: */
1131: sp = lgetenv("TERMCAP");
1132: if (sp == NULL || *sp == '\0')
1.1 etheisen 1133: {
1.1.1.2 millert 1134: char *termcap;
1135: if ((sp = homefile("termcap.dat")) != NULL)
1136: {
1137: termcap = (char *) ecalloc(strlen(sp)+9, sizeof(char));
1138: sprintf(termcap, "TERMCAP=%s", sp);
1139: free(sp);
1140: putenv(termcap);
1141: }
1.1 etheisen 1142: }
1.1.1.2 millert 1143: #endif
1144: /*
1145: * Find out what kind of terminal this is.
1146: */
1147: if ((term = lgetenv("TERM")) == NULL)
1148: term = DEFAULT_TERM;
1149: hardcopy = 0;
1.1.1.3 ! shadchin 1150: if (tgetent(termbuf, term) != TGETENT_OK)
1.1.1.2 millert 1151: hardcopy = 1;
1152: if (ltgetflag("hc"))
1153: hardcopy = 1;
1154:
1155: /*
1156: * Get size of the screen.
1157: */
1158: scrsize();
1159: pos_init();
1.1 etheisen 1160:
1.1.1.2 millert 1161: auto_wrap = ltgetflag("am");
1162: ignaw = ltgetflag("xn");
1163: above_mem = ltgetflag("da");
1164: below_mem = ltgetflag("db");
1165: clear_bg = ltgetflag("ut");
1.1 etheisen 1166:
1167: /*
1168: * Assumes termcap variable "sg" is the printing width of:
1169: * the standout sequence, the end standout sequence,
1170: * the underline sequence, the end underline sequence,
1171: * the boldface sequence, and the end boldface sequence.
1172: */
1.1.1.2 millert 1173: if ((so_s_width = ltgetnum("sg")) < 0)
1.1 etheisen 1174: so_s_width = 0;
1175: so_e_width = so_s_width;
1176:
1177: bo_s_width = bo_e_width = so_s_width;
1178: ul_s_width = ul_e_width = so_s_width;
1179: bl_s_width = bl_e_width = so_s_width;
1180:
1181: #if HILITE_SEARCH
1182: if (so_s_width > 0 || so_e_width > 0)
1183: /*
1184: * Disable highlighting by default on magic cookie terminals.
1185: * Turning on highlighting might change the displayed width
1186: * of a line, causing the display to get messed up.
1187: * The user can turn it back on with -g,
1188: * but she won't like the results.
1189: */
1190: hilite_search = 0;
1191: #endif
1192:
1193: /*
1194: * Get various string-valued capabilities.
1195: */
1196: sp = sbuf;
1197:
1198: #if HAVE_OSPEED
1.1.1.2 millert 1199: sc_pad = ltgetstr("pc", &sp);
1.1 etheisen 1200: if (sc_pad != NULL)
1201: PC = *sc_pad;
1202: #endif
1203:
1.1.1.2 millert 1204: sc_s_keypad = ltgetstr("ks", &sp);
1.1 etheisen 1205: if (sc_s_keypad == NULL)
1206: sc_s_keypad = "";
1.1.1.2 millert 1207: sc_e_keypad = ltgetstr("ke", &sp);
1.1 etheisen 1208: if (sc_e_keypad == NULL)
1209: sc_e_keypad = "";
1210:
1.1.1.2 millert 1211: sc_init = ltgetstr("ti", &sp);
1.1 etheisen 1212: if (sc_init == NULL)
1213: sc_init = "";
1214:
1.1.1.2 millert 1215: sc_deinit= ltgetstr("te", &sp);
1.1 etheisen 1216: if (sc_deinit == NULL)
1217: sc_deinit = "";
1218:
1.1.1.2 millert 1219: sc_eol_clear = ltgetstr("ce", &sp);
1220: if (sc_eol_clear == NULL || *sc_eol_clear == '\0')
1.1 etheisen 1221: {
1.1.1.2 millert 1222: missing_cap = 1;
1.1 etheisen 1223: sc_eol_clear = "";
1224: }
1225:
1.1.1.2 millert 1226: sc_eos_clear = ltgetstr("cd", &sp);
1227: if (below_mem && (sc_eos_clear == NULL || *sc_eos_clear == '\0'))
1.1 etheisen 1228: {
1.1.1.2 millert 1229: missing_cap = 1;
1.1.1.3 ! shadchin 1230: sc_eos_clear = "";
1.1 etheisen 1231: }
1232:
1.1.1.2 millert 1233: sc_clear = ltgetstr("cl", &sp);
1234: if (sc_clear == NULL || *sc_clear == '\0')
1.1 etheisen 1235: {
1.1.1.2 millert 1236: missing_cap = 1;
1.1 etheisen 1237: sc_clear = "\n\n";
1238: }
1239:
1.1.1.2 millert 1240: sc_move = ltgetstr("cm", &sp);
1241: if (sc_move == NULL || *sc_move == '\0')
1.1 etheisen 1242: {
1243: /*
1244: * This is not an error here, because we don't
1245: * always need sc_move.
1246: * We need it only if we don't have home or lower-left.
1247: */
1248: sc_move = "";
1249: can_goto_line = 0;
1250: } else
1251: can_goto_line = 1;
1252:
1.1.1.2 millert 1253: tmodes("so", "se", &sc_s_in, &sc_s_out, "", "", &sp);
1254: tmodes("us", "ue", &sc_u_in, &sc_u_out, sc_s_in, sc_s_out, &sp);
1255: tmodes("md", "me", &sc_b_in, &sc_b_out, sc_s_in, sc_s_out, &sp);
1256: tmodes("mb", "me", &sc_bl_in, &sc_bl_out, sc_s_in, sc_s_out, &sp);
1.1 etheisen 1257:
1.1.1.2 millert 1258: sc_visual_bell = ltgetstr("vb", &sp);
1259: if (sc_visual_bell == NULL)
1.1 etheisen 1260: sc_visual_bell = "";
1261:
1.1.1.2 millert 1262: if (ltgetflag("bs"))
1.1 etheisen 1263: sc_backspace = "\b";
1264: else
1265: {
1.1.1.2 millert 1266: sc_backspace = ltgetstr("bc", &sp);
1.1 etheisen 1267: if (sc_backspace == NULL || *sc_backspace == '\0')
1268: sc_backspace = "\b";
1269: }
1270:
1271: /*
1272: * Choose between using "ho" and "cm" ("home" and "cursor move")
1273: * to move the cursor to the upper left corner of the screen.
1274: */
1.1.1.2 millert 1275: t1 = ltgetstr("ho", &sp);
1276: if (t1 == NULL)
1.1 etheisen 1277: t1 = "";
1278: if (*sc_move == '\0')
1279: t2 = "";
1280: else
1281: {
1282: strcpy(sp, tgoto(sc_move, 0, 0));
1283: t2 = sp;
1284: sp += strlen(sp) + 1;
1285: }
1.1.1.2 millert 1286: sc_home = cheaper(t1, t2, "|\b^");
1.1 etheisen 1287:
1288: /*
1289: * Choose between using "ll" and "cm" ("lower left" and "cursor move")
1290: * to move the cursor to the lower left corner of the screen.
1291: */
1.1.1.2 millert 1292: t1 = ltgetstr("ll", &sp);
1293: if (t1 == NULL)
1.1 etheisen 1294: t1 = "";
1295: if (*sc_move == '\0')
1296: t2 = "";
1297: else
1298: {
1299: strcpy(sp, tgoto(sc_move, 0, sc_height-1));
1300: t2 = sp;
1301: sp += strlen(sp) + 1;
1302: }
1.1.1.2 millert 1303: sc_lower_left = cheaper(t1, t2, "\r");
1.1 etheisen 1304:
1305: /*
1.1.1.3 ! shadchin 1306: * Get carriage return string.
! 1307: */
! 1308: sc_return = ltgetstr("cr", &sp);
! 1309: if (sc_return == NULL)
! 1310: sc_return = "\r";
! 1311:
! 1312: /*
1.1 etheisen 1313: * Choose between using "al" or "sr" ("add line" or "scroll reverse")
1314: * to add a line at the top of the screen.
1315: */
1.1.1.2 millert 1316: t1 = ltgetstr("al", &sp);
1317: if (t1 == NULL)
1.1 etheisen 1318: t1 = "";
1.1.1.2 millert 1319: t2 = ltgetstr("sr", &sp);
1320: if (t2 == NULL)
1.1 etheisen 1321: t2 = "";
1322: #if OS2
1323: if (*t1 == '\0' && *t2 == '\0')
1324: sc_addline = "";
1325: else
1326: #endif
1327: if (above_mem)
1328: sc_addline = t1;
1329: else
1.1.1.2 millert 1330: sc_addline = cheaper(t1, t2, "");
1.1 etheisen 1331: if (*sc_addline == '\0')
1332: {
1333: /*
1334: * Force repaint on any backward movement.
1335: */
1.1.1.2 millert 1336: no_back_scroll = 1;
1.1 etheisen 1337: }
1.1.1.2 millert 1338: #endif /* MSDOS_COMPILER */
1.1 etheisen 1339: }
1340:
1.1.1.2 millert 1341: #if !MSDOS_COMPILER
1.1 etheisen 1342: /*
1343: * Return the cost of displaying a termcap string.
1344: * We use the trick of calling tputs, but as a char printing function
1345: * we give it inc_costcount, which just increments "costcount".
1346: * This tells us how many chars would be printed by using this string.
1347: * {{ Couldn't we just use strlen? }}
1348: */
1349: static int costcount;
1350:
1351: /*ARGSUSED*/
1352: static int
1353: inc_costcount(c)
1354: int c;
1355: {
1356: costcount++;
1357: return (c);
1358: }
1359:
1360: static int
1361: cost(t)
1362: char *t;
1363: {
1364: costcount = 0;
1365: tputs(t, sc_height, inc_costcount);
1366: return (costcount);
1367: }
1368:
1369: /*
1370: * Return the "best" of the two given termcap strings.
1371: * The best, if both exist, is the one with the lower
1372: * cost (see cost() function).
1373: */
1374: static char *
1.1.1.2 millert 1375: cheaper(t1, t2, def)
1.1 etheisen 1376: char *t1, *t2;
1377: char *def;
1378: {
1379: if (*t1 == '\0' && *t2 == '\0')
1380: {
1.1.1.2 millert 1381: missing_cap = 1;
1.1 etheisen 1382: return (def);
1383: }
1384: if (*t1 == '\0')
1385: return (t2);
1386: if (*t2 == '\0')
1387: return (t1);
1388: if (cost(t1) < cost(t2))
1389: return (t1);
1390: return (t2);
1391: }
1392:
1.1.1.2 millert 1393: static void
1394: tmodes(incap, outcap, instr, outstr, def_instr, def_outstr, spp)
1395: char *incap;
1396: char *outcap;
1397: char **instr;
1398: char **outstr;
1399: char *def_instr;
1400: char *def_outstr;
1401: char **spp;
1402: {
1403: *instr = ltgetstr(incap, spp);
1404: if (*instr == NULL)
1405: {
1406: /* Use defaults. */
1407: *instr = def_instr;
1408: *outstr = def_outstr;
1409: return;
1410: }
1411:
1412: *outstr = ltgetstr(outcap, spp);
1413: if (*outstr == NULL)
1414: /* No specific out capability; use "me". */
1415: *outstr = ltgetstr("me", spp);
1416: if (*outstr == NULL)
1417: /* Don't even have "me"; use a null string. */
1418: *outstr = "";
1419: }
1420:
1421: #endif /* MSDOS_COMPILER */
1422:
1.1 etheisen 1423:
1424: /*
1425: * Below are the functions which perform all the
1426: * terminal-specific screen manipulation.
1427: */
1428:
1429:
1.1.1.2 millert 1430: #if MSDOS_COMPILER
1431:
1432: #if MSDOS_COMPILER==WIN32C
1433: static void
1434: _settextposition(int row, int col)
1435: {
1436: COORD cpos;
1437: CONSOLE_SCREEN_BUFFER_INFO csbi;
1438:
1439: GetConsoleScreenBufferInfo(con_out, &csbi);
1440: cpos.X = csbi.srWindow.Left + (col - 1);
1441: cpos.Y = csbi.srWindow.Top + (row - 1);
1442: SetConsoleCursorPosition(con_out, cpos);
1443: }
1444: #endif
1445:
1446: /*
1447: * Initialize the screen to the correct color at startup.
1448: */
1449: static void
1450: initcolor()
1451: {
1452: SETCOLORS(nm_fg_color, nm_bg_color);
1453: #if 0
1454: /*
1455: * This clears the screen at startup. This is different from
1456: * the behavior of other versions of less. Disable it for now.
1457: */
1458: char *blanks;
1459: int row;
1460: int col;
1461:
1462: /*
1463: * Create a complete, blank screen using "normal" colors.
1464: */
1465: SETCOLORS(nm_fg_color, nm_bg_color);
1466: blanks = (char *) ecalloc(width+1, sizeof(char));
1467: for (col = 0; col < sc_width; col++)
1468: blanks[col] = ' ';
1469: blanks[sc_width] = '\0';
1470: for (row = 0; row < sc_height; row++)
1471: _outtext(blanks);
1472: free(blanks);
1473: #endif
1474: }
1475: #endif
1476:
1477: #if MSDOS_COMPILER==WIN32C
1478:
1479: /*
1480: * Termcap-like init with a private win32 console.
1481: */
1482: static void
1483: win32_init_term()
1484: {
1485: CONSOLE_SCREEN_BUFFER_INFO scr;
1486: COORD size;
1487:
1488: if (con_out_save == INVALID_HANDLE_VALUE)
1489: return;
1490:
1491: GetConsoleScreenBufferInfo(con_out_save, &scr);
1492:
1493: if (con_out_ours == INVALID_HANDLE_VALUE)
1494: {
1495: /*
1496: * Create our own screen buffer, so that we
1497: * may restore the original when done.
1498: */
1499: con_out_ours = CreateConsoleScreenBuffer(
1500: GENERIC_WRITE | GENERIC_READ,
1501: FILE_SHARE_WRITE | FILE_SHARE_READ,
1502: (LPSECURITY_ATTRIBUTES) NULL,
1503: CONSOLE_TEXTMODE_BUFFER,
1504: (LPVOID) NULL);
1505: }
1506:
1507: size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
1508: size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
1509: SetConsoleScreenBufferSize(con_out_ours, size);
1510: SetConsoleActiveScreenBuffer(con_out_ours);
1511: con_out = con_out_ours;
1512: }
1513:
1514: /*
1515: * Restore the startup console.
1516: */
1517: static void
1518: win32_deinit_term()
1519: {
1520: if (con_out_save == INVALID_HANDLE_VALUE)
1521: return;
1522: if (quitting)
1523: (void) CloseHandle(con_out_ours);
1524: SetConsoleActiveScreenBuffer(con_out_save);
1525: con_out = con_out_save;
1526: }
1527:
1528: #endif
1529:
1.1 etheisen 1530: /*
1531: * Initialize terminal
1532: */
1533: public void
1534: init()
1535: {
1.1.1.2 millert 1536: #if !MSDOS_COMPILER
1537: if (!no_init)
1538: tputs(sc_init, sc_height, putchr);
1539: if (!no_keypad)
1540: tputs(sc_s_keypad, sc_height, putchr);
1.1.1.3 ! shadchin 1541: if (top_scroll)
! 1542: {
! 1543: int i;
! 1544:
! 1545: /*
! 1546: * This is nice to terminals with no alternate screen,
! 1547: * but with saved scrolled-off-the-top lines. This way,
! 1548: * no previous line is lost, but we start with a whole
! 1549: * screen to ourself.
! 1550: */
! 1551: for (i = 1; i < sc_height; i++)
! 1552: putchr('\n');
! 1553: } else
! 1554: line_left();
1.1.1.2 millert 1555: #else
1556: #if MSDOS_COMPILER==WIN32C
1557: if (!no_init)
1558: win32_init_term();
1559: #endif
1560: initcolor();
1561: flush();
1562: #endif
1.1 etheisen 1563: init_done = 1;
1564: }
1565:
1566: /*
1567: * Deinitialize terminal
1568: */
1569: public void
1570: deinit()
1571: {
1572: if (!init_done)
1573: return;
1.1.1.2 millert 1574: #if !MSDOS_COMPILER
1575: if (!no_keypad)
1576: tputs(sc_e_keypad, sc_height, putchr);
1577: if (!no_init)
1578: tputs(sc_deinit, sc_height, putchr);
1579: #else
1580: /* Restore system colors. */
1581: SETCOLORS(sy_fg_color, sy_bg_color);
1582: #if MSDOS_COMPILER==WIN32C
1583: if (!no_init)
1584: win32_deinit_term();
1585: #else
1586: /* Need clreol to make SETCOLORS take effect. */
1587: clreol();
1588: #endif
1589: #endif
1.1 etheisen 1590: init_done = 0;
1591: }
1592:
1593: /*
1594: * Home cursor (move to upper left corner of screen).
1595: */
1596: public void
1597: home()
1598: {
1.1.1.2 millert 1599: #if !MSDOS_COMPILER
1.1 etheisen 1600: tputs(sc_home, 1, putchr);
1.1.1.2 millert 1601: #else
1602: flush();
1603: _settextposition(1,1);
1604: #endif
1.1 etheisen 1605: }
1606:
1607: /*
1608: * Add a blank line (called with cursor at home).
1609: * Should scroll the display down.
1610: */
1611: public void
1612: add_line()
1613: {
1.1.1.2 millert 1614: #if !MSDOS_COMPILER
1.1 etheisen 1615: tputs(sc_addline, sc_height, putchr);
1.1.1.2 millert 1616: #else
1617: flush();
1618: #if MSDOS_COMPILER==MSOFTC
1619: _scrolltextwindow(_GSCROLLDOWN);
1620: _settextposition(1,1);
1621: #else
1622: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
1623: movetext(1,1, sc_width,sc_height-1, 1,2);
1624: gotoxy(1,1);
1625: clreol();
1626: #else
1627: #if MSDOS_COMPILER==WIN32C
1628: {
1629: CHAR_INFO fillchar;
1630: SMALL_RECT rcSrc, rcClip;
1631: COORD new_org;
1632: CONSOLE_SCREEN_BUFFER_INFO csbi;
1633:
1634: GetConsoleScreenBufferInfo(con_out,&csbi);
1635:
1636: /* The clip rectangle is the entire visible screen. */
1637: rcClip.Left = csbi.srWindow.Left;
1638: rcClip.Top = csbi.srWindow.Top;
1639: rcClip.Right = csbi.srWindow.Right;
1640: rcClip.Bottom = csbi.srWindow.Bottom;
1641:
1642: /* The source rectangle is the visible screen minus the last line. */
1643: rcSrc = rcClip;
1644: rcSrc.Bottom--;
1645:
1646: /* Move the top left corner of the source window down one row. */
1647: new_org.X = rcSrc.Left;
1648: new_org.Y = rcSrc.Top + 1;
1649:
1650: /* Fill the right character and attributes. */
1651: fillchar.Char.AsciiChar = ' ';
1652: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1653: fillchar.Attributes = curr_attr;
1654: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1655: _settextposition(1,1);
1656: }
1657: #endif
1658: #endif
1659: #endif
1660: #endif
1661: }
1662:
1663: #if 0
1664: /*
1665: * Remove the n topmost lines and scroll everything below it in the
1666: * window upward. This is needed to stop leaking the topmost line
1667: * into the scrollback buffer when we go down-one-line (in WIN32).
1668: */
1669: public void
1670: remove_top(n)
1671: int n;
1672: {
1673: #if MSDOS_COMPILER==WIN32C
1674: SMALL_RECT rcSrc, rcClip;
1675: CHAR_INFO fillchar;
1676: COORD new_org;
1677: CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */
1678:
1679: if (n >= sc_height - 1)
1680: {
1681: clear();
1682: home();
1683: return;
1684: }
1685:
1686: flush();
1687:
1688: GetConsoleScreenBufferInfo(con_out, &csbi);
1689:
1690: /* Get the extent of all-visible-rows-but-the-last. */
1691: rcSrc.Left = csbi.srWindow.Left;
1692: rcSrc.Top = csbi.srWindow.Top + n;
1693: rcSrc.Right = csbi.srWindow.Right;
1694: rcSrc.Bottom = csbi.srWindow.Bottom;
1695:
1696: /* Get the clip rectangle. */
1697: rcClip.Left = rcSrc.Left;
1698: rcClip.Top = csbi.srWindow.Top;
1699: rcClip.Right = rcSrc.Right;
1700: rcClip.Bottom = rcSrc.Bottom ;
1701:
1702: /* Move the source window up n rows. */
1703: new_org.X = rcSrc.Left;
1704: new_org.Y = rcSrc.Top - n;
1705:
1706: /* Fill the right character and attributes. */
1707: fillchar.Char.AsciiChar = ' ';
1708: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1709: fillchar.Attributes = curr_attr;
1710:
1711: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1712:
1713: /* Position cursor on first blank line. */
1714: goto_line(sc_height - n - 1);
1715: #endif
1716: }
1717: #endif
1718:
1719: #if MSDOS_COMPILER==WIN32C
1720: /*
1721: * Clear the screen.
1722: */
1723: static void
1724: win32_clear()
1725: {
1726: /*
1727: * This will clear only the currently visible rows of the NT
1728: * console buffer, which means none of the precious scrollback
1729: * rows are touched making for faster scrolling. Note that, if
1730: * the window has fewer columns than the console buffer (i.e.
1731: * there is a horizontal scrollbar as well), the entire width
1732: * of the visible rows will be cleared.
1733: */
1734: COORD topleft;
1735: DWORD nchars;
1736: DWORD winsz;
1737: CONSOLE_SCREEN_BUFFER_INFO csbi;
1738:
1739: /* get the number of cells in the current buffer */
1740: GetConsoleScreenBufferInfo(con_out, &csbi);
1741: winsz = csbi.dwSize.X * (csbi.srWindow.Bottom - csbi.srWindow.Top + 1);
1742: topleft.X = 0;
1743: topleft.Y = csbi.srWindow.Top;
1744:
1745: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
1746: FillConsoleOutputCharacter(con_out, ' ', winsz, topleft, &nchars);
1747: FillConsoleOutputAttribute(con_out, curr_attr, winsz, topleft, &nchars);
1748: }
1749:
1750: /*
1751: * Remove the n topmost lines and scroll everything below it in the
1752: * window upward.
1753: */
1754: public void
1755: win32_scroll_up(n)
1756: int n;
1757: {
1758: SMALL_RECT rcSrc, rcClip;
1759: CHAR_INFO fillchar;
1760: COORD topleft;
1761: COORD new_org;
1762: DWORD nchars;
1763: DWORD size;
1764: CONSOLE_SCREEN_BUFFER_INFO csbi;
1765:
1766: if (n <= 0)
1767: return;
1768:
1769: if (n >= sc_height - 1)
1770: {
1771: win32_clear();
1772: _settextposition(1,1);
1773: return;
1774: }
1775:
1776: /* Get the extent of what will remain visible after scrolling. */
1777: GetConsoleScreenBufferInfo(con_out, &csbi);
1778: rcSrc.Left = csbi.srWindow.Left;
1779: rcSrc.Top = csbi.srWindow.Top + n;
1780: rcSrc.Right = csbi.srWindow.Right;
1781: rcSrc.Bottom = csbi.srWindow.Bottom;
1782:
1783: /* Get the clip rectangle. */
1784: rcClip.Left = rcSrc.Left;
1785: rcClip.Top = csbi.srWindow.Top;
1786: rcClip.Right = rcSrc.Right;
1787: rcClip.Bottom = rcSrc.Bottom ;
1788:
1789: /* Move the source text to the top of the screen. */
1790: new_org.X = rcSrc.Left;
1.1.1.3 ! shadchin 1791: new_org.Y = rcClip.Top;
1.1.1.2 millert 1792:
1793: /* Fill the right character and attributes. */
1794: fillchar.Char.AsciiChar = ' ';
1795: fillchar.Attributes = MAKEATTR(nm_fg_color, nm_bg_color);
1796:
1797: /* Scroll the window. */
1798: SetConsoleTextAttribute(con_out, fillchar.Attributes);
1799: ScrollConsoleScreenBuffer(con_out, &rcSrc, &rcClip, new_org, &fillchar);
1800:
1801: /* Clear remaining lines at bottom. */
1802: topleft.X = csbi.dwCursorPosition.X;
1803: topleft.Y = rcSrc.Bottom - n;
1804: size = (n * csbi.dwSize.X) + (rcSrc.Right - topleft.X);
1805: FillConsoleOutputCharacter(con_out, ' ', size, topleft,
1806: &nchars);
1807: FillConsoleOutputAttribute(con_out, fillchar.Attributes, size, topleft,
1808: &nchars);
1809: SetConsoleTextAttribute(con_out, curr_attr);
1810:
1811: /* Move cursor n lines up from where it was. */
1812: csbi.dwCursorPosition.Y -= n;
1813: SetConsoleCursorPosition(con_out, csbi.dwCursorPosition);
1.1 etheisen 1814: }
1.1.1.2 millert 1815: #endif
1.1 etheisen 1816:
1817: /*
1818: * Move cursor to lower left corner of screen.
1819: */
1820: public void
1821: lower_left()
1822: {
1.1.1.2 millert 1823: #if !MSDOS_COMPILER
1.1 etheisen 1824: tputs(sc_lower_left, 1, putchr);
1.1.1.2 millert 1825: #else
1826: flush();
1827: _settextposition(sc_height, 1);
1828: #endif
1829: }
1830:
1831: /*
1.1.1.3 ! shadchin 1832: * Move cursor to left position of current line.
! 1833: */
! 1834: public void
! 1835: line_left()
! 1836: {
! 1837: #if !MSDOS_COMPILER
! 1838: tputs(sc_return, 1, putchr);
! 1839: #else
! 1840: int row;
! 1841: flush();
! 1842: #if MSDOS_COMPILER==WIN32C
! 1843: {
! 1844: CONSOLE_SCREEN_BUFFER_INFO scr;
! 1845: GetConsoleScreenBufferInfo(con_out, &scr);
! 1846: row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
! 1847: }
! 1848: #else
! 1849: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
! 1850: row = wherey();
! 1851: #else
! 1852: {
! 1853: struct rccoord tpos = _gettextposition();
! 1854: row = tpos.row;
! 1855: }
! 1856: #endif
! 1857: #endif
! 1858: _settextposition(row, 1);
! 1859: #endif
! 1860: }
! 1861:
! 1862: /*
1.1.1.2 millert 1863: * Check if the console size has changed and reset internals
1864: * (in lieu of SIGWINCH for WIN32).
1865: */
1866: public void
1867: check_winch()
1868: {
1869: #if MSDOS_COMPILER==WIN32C
1870: CONSOLE_SCREEN_BUFFER_INFO scr;
1871: COORD size;
1872:
1873: if (con_out == INVALID_HANDLE_VALUE)
1874: return;
1875:
1876: flush();
1877: GetConsoleScreenBufferInfo(con_out, &scr);
1878: size.Y = scr.srWindow.Bottom - scr.srWindow.Top + 1;
1879: size.X = scr.srWindow.Right - scr.srWindow.Left + 1;
1880: if (size.Y != sc_height || size.X != sc_width)
1881: {
1882: sc_height = size.Y;
1883: sc_width = size.X;
1884: if (!no_init && con_out_ours == con_out)
1885: SetConsoleScreenBufferSize(con_out, size);
1886: pos_init();
1887: wscroll = (sc_height + 1) / 2;
1888: screen_trashed = 1;
1889: }
1890: #endif
1.1 etheisen 1891: }
1892:
1893: /*
1894: * Goto a specific line on the screen.
1895: */
1896: public void
1897: goto_line(slinenum)
1898: int slinenum;
1899: {
1.1.1.2 millert 1900: #if !MSDOS_COMPILER
1901: tputs(tgoto(sc_move, 0, slinenum), 1, putchr);
1902: #else
1903: flush();
1904: _settextposition(slinenum+1, 1);
1905: #endif
1.1 etheisen 1906: }
1907:
1.1.1.2 millert 1908: #if MSDOS_COMPILER==MSOFTC || MSDOS_COMPILER==BORLANDC
1.1 etheisen 1909: /*
1.1.1.2 millert 1910: * Create an alternate screen which is all white.
1911: * This screen is used to create a "flash" effect, by displaying it
1912: * briefly and then switching back to the normal screen.
1913: * {{ Yuck! There must be a better way to get a visual bell. }}
1.1 etheisen 1914: */
1.1.1.2 millert 1915: static void
1916: create_flash()
1.1 etheisen 1917: {
1.1.1.2 millert 1918: #if MSDOS_COMPILER==MSOFTC
1919: struct videoconfig w;
1920: char *blanks;
1921: int row, col;
1922:
1923: _getvideoconfig(&w);
1924: videopages = w.numvideopages;
1925: if (videopages < 2)
1926: {
1.1.1.3 ! shadchin 1927: at_enter(AT_STANDOUT);
! 1928: at_exit();
1.1.1.2 millert 1929: } else
1930: {
1931: _setactivepage(1);
1.1.1.3 ! shadchin 1932: at_enter(AT_STANDOUT);
1.1.1.2 millert 1933: blanks = (char *) ecalloc(w.numtextcols, sizeof(char));
1934: for (col = 0; col < w.numtextcols; col++)
1935: blanks[col] = ' ';
1936: for (row = w.numtextrows; row > 0; row--)
1937: _outmem(blanks, w.numtextcols);
1938: _setactivepage(0);
1939: _setvisualpage(0);
1940: free(blanks);
1.1.1.3 ! shadchin 1941: at_exit();
1.1.1.2 millert 1942: }
1943: #else
1944: #if MSDOS_COMPILER==BORLANDC
1945: register int n;
1946:
1947: whitescreen = (unsigned short *)
1948: malloc(sc_width * sc_height * sizeof(short));
1949: if (whitescreen == NULL)
1950: return;
1951: for (n = 0; n < sc_width * sc_height; n++)
1952: whitescreen[n] = 0x7020;
1953: #else
1954: #if MSDOS_COMPILER==WIN32C
1955: register int n;
1956:
1957: whitescreen = (WORD *)
1958: malloc(sc_height * sc_width * sizeof(WORD));
1959: if (whitescreen == NULL)
1960: return;
1961: /* Invert the standard colors. */
1962: for (n = 0; n < sc_width * sc_height; n++)
1963: whitescreen[n] = (WORD)((nm_fg_color << 4) | nm_bg_color);
1964: #endif
1965: #endif
1966: #endif
1967: flash_created = 1;
1.1 etheisen 1968: }
1.1.1.2 millert 1969: #endif /* MSDOS_COMPILER */
1.1 etheisen 1970:
1971: /*
1972: * Output the "visual bell", if there is one.
1973: */
1974: public void
1975: vbell()
1976: {
1.1.1.2 millert 1977: #if !MSDOS_COMPILER
1.1 etheisen 1978: if (*sc_visual_bell == '\0')
1979: return;
1980: tputs(sc_visual_bell, sc_height, putchr);
1.1.1.2 millert 1981: #else
1982: #if MSDOS_COMPILER==DJGPPC
1983: ScreenVisualBell();
1984: #else
1985: #if MSDOS_COMPILER==MSOFTC
1986: /*
1987: * Create a flash screen on the second video page.
1988: * Switch to that page, then switch back.
1989: */
1990: if (!flash_created)
1991: create_flash();
1992: if (videopages < 2)
1993: return;
1994: _setvisualpage(1);
1995: delay(100);
1996: _setvisualpage(0);
1997: #else
1998: #if MSDOS_COMPILER==BORLANDC
1999: unsigned short *currscreen;
2000:
2001: /*
2002: * Get a copy of the current screen.
2003: * Display the flash screen.
2004: * Then restore the old screen.
2005: */
2006: if (!flash_created)
2007: create_flash();
2008: if (whitescreen == NULL)
2009: return;
2010: currscreen = (unsigned short *)
2011: malloc(sc_width * sc_height * sizeof(short));
2012: if (currscreen == NULL) return;
2013: gettext(1, 1, sc_width, sc_height, currscreen);
2014: puttext(1, 1, sc_width, sc_height, whitescreen);
2015: delay(100);
2016: puttext(1, 1, sc_width, sc_height, currscreen);
2017: free(currscreen);
2018: #else
2019: #if MSDOS_COMPILER==WIN32C
2020: /* paint screen with an inverse color */
2021: clear();
2022:
2023: /* leave it displayed for 100 msec. */
2024: Sleep(100);
2025:
2026: /* restore with a redraw */
2027: repaint();
2028: #endif
2029: #endif
2030: #endif
2031: #endif
2032: #endif
2033: }
2034:
2035: /*
2036: * Make a noise.
2037: */
2038: static void
2039: beep()
2040: {
2041: #if !MSDOS_COMPILER
2042: putchr(CONTROL('G'));
2043: #else
2044: #if MSDOS_COMPILER==WIN32C
2045: MessageBeep(0);
2046: #else
2047: write(1, "\7", 1);
2048: #endif
2049: #endif
2050: }
2051:
2052: /*
2053: * Ring the terminal bell.
2054: */
2055: public void
2056: bell()
2057: {
2058: if (quiet == VERY_QUIET)
2059: vbell();
2060: else
2061: beep();
1.1 etheisen 2062: }
2063:
2064: /*
2065: * Clear the screen.
2066: */
2067: public void
2068: clear()
2069: {
1.1.1.2 millert 2070: #if !MSDOS_COMPILER
1.1 etheisen 2071: tputs(sc_clear, sc_height, putchr);
1.1.1.2 millert 2072: #else
2073: flush();
2074: #if MSDOS_COMPILER==WIN32C
2075: win32_clear();
2076: #else
2077: _clearscreen(_GCLEARSCREEN);
2078: #endif
2079: #endif
1.1 etheisen 2080: }
2081:
2082: /*
2083: * Clear from the cursor to the end of the cursor's line.
2084: * {{ This must not move the cursor. }}
2085: */
2086: public void
2087: clear_eol()
2088: {
1.1.1.2 millert 2089: #if !MSDOS_COMPILER
1.1 etheisen 2090: tputs(sc_eol_clear, 1, putchr);
1.1.1.2 millert 2091: #else
2092: #if MSDOS_COMPILER==MSOFTC
2093: short top, left;
2094: short bot, right;
2095: struct rccoord tpos;
2096:
2097: flush();
2098: /*
2099: * Save current state.
2100: */
2101: tpos = _gettextposition();
2102: _gettextwindow(&top, &left, &bot, &right);
2103: /*
2104: * Set a temporary window to the current line,
2105: * from the cursor's position to the right edge of the screen.
2106: * Then clear that window.
2107: */
2108: _settextwindow(tpos.row, tpos.col, tpos.row, sc_width);
2109: _clearscreen(_GWINDOW);
2110: /*
2111: * Restore state.
2112: */
2113: _settextwindow(top, left, bot, right);
2114: _settextposition(tpos.row, tpos.col);
2115: #else
2116: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2117: flush();
2118: clreol();
2119: #else
2120: #if MSDOS_COMPILER==WIN32C
2121: DWORD nchars;
2122: COORD cpos;
2123: CONSOLE_SCREEN_BUFFER_INFO scr;
2124:
2125: flush();
2126: memset(&scr, 0, sizeof(scr));
2127: GetConsoleScreenBufferInfo(con_out, &scr);
2128: cpos.X = scr.dwCursorPosition.X;
2129: cpos.Y = scr.dwCursorPosition.Y;
2130: curr_attr = MAKEATTR(nm_fg_color, nm_bg_color);
2131: FillConsoleOutputAttribute(con_out, curr_attr,
2132: scr.dwSize.X - cpos.X, cpos, &nchars);
2133: FillConsoleOutputCharacter(con_out, ' ',
2134: scr.dwSize.X - cpos.X, cpos, &nchars);
2135: #endif
2136: #endif
2137: #endif
2138: #endif
2139: }
2140:
2141: /*
2142: * Clear the current line.
2143: * Clear the screen if there's off-screen memory below the display.
2144: */
2145: static void
2146: clear_eol_bot()
2147: {
2148: #if MSDOS_COMPILER
2149: clear_eol();
2150: #else
2151: if (below_mem)
2152: tputs(sc_eos_clear, 1, putchr);
2153: else
2154: tputs(sc_eol_clear, 1, putchr);
2155: #endif
1.1 etheisen 2156: }
2157:
2158: /*
2159: * Clear the bottom line of the display.
2160: * Leave the cursor at the beginning of the bottom line.
2161: */
2162: public void
2163: clear_bot()
2164: {
1.1.1.2 millert 2165: /*
2166: * If we're in a non-normal attribute mode, temporarily exit
2167: * the mode while we do the clear. Some terminals fill the
2168: * cleared area with the current attribute.
2169: */
1.1.1.3 ! shadchin 2170: if (oldbot)
! 2171: lower_left();
! 2172: else
! 2173: line_left();
! 2174:
! 2175: if (attrmode == AT_NORMAL)
1.1.1.2 millert 2176: clear_eol_bot();
1.1.1.3 ! shadchin 2177: else
! 2178: {
! 2179: int saved_attrmode = attrmode;
! 2180:
! 2181: at_exit();
1.1.1.2 millert 2182: clear_eol_bot();
1.1.1.3 ! shadchin 2183: at_enter(saved_attrmode);
1.1.1.2 millert 2184: }
1.1 etheisen 2185: }
2186:
2187: public void
1.1.1.3 ! shadchin 2188: at_enter(attr)
! 2189: int attr;
1.1 etheisen 2190: {
1.1.1.3 ! shadchin 2191: attr = apply_at_specials(attr);
1.1 etheisen 2192:
1.1.1.2 millert 2193: #if !MSDOS_COMPILER
1.1.1.3 ! shadchin 2194: /* The one with the most priority is last. */
! 2195: if (attr & AT_UNDERLINE)
! 2196: tputs(sc_u_in, 1, putchr);
! 2197: if (attr & AT_BOLD)
! 2198: tputs(sc_b_in, 1, putchr);
! 2199: if (attr & AT_BLINK)
! 2200: tputs(sc_bl_in, 1, putchr);
! 2201: if (attr & AT_STANDOUT)
! 2202: tputs(sc_s_in, 1, putchr);
1.1.1.2 millert 2203: #else
2204: flush();
1.1.1.3 ! shadchin 2205: /* The one with the most priority is first. */
! 2206: if (attr & AT_STANDOUT)
! 2207: {
! 2208: SETCOLORS(so_fg_color, so_bg_color);
! 2209: } else if (attr & AT_BLINK)
! 2210: {
! 2211: SETCOLORS(bl_fg_color, bl_bg_color);
! 2212: }
! 2213: else if (attr & AT_BOLD)
! 2214: {
! 2215: SETCOLORS(bo_fg_color, bo_bg_color);
! 2216: }
! 2217: else if (attr & AT_UNDERLINE)
! 2218: {
! 2219: SETCOLORS(ul_fg_color, ul_bg_color);
! 2220: }
1.1.1.2 millert 2221: #endif
1.1 etheisen 2222:
1.1.1.3 ! shadchin 2223: attrmode = attr;
1.1 etheisen 2224: }
2225:
2226: public void
1.1.1.3 ! shadchin 2227: at_exit()
1.1 etheisen 2228: {
1.1.1.2 millert 2229: #if !MSDOS_COMPILER
1.1.1.3 ! shadchin 2230: /* Undo things in the reverse order we did them. */
! 2231: if (attrmode & AT_STANDOUT)
! 2232: tputs(sc_s_out, 1, putchr);
! 2233: if (attrmode & AT_BLINK)
! 2234: tputs(sc_bl_out, 1, putchr);
! 2235: if (attrmode & AT_BOLD)
! 2236: tputs(sc_b_out, 1, putchr);
! 2237: if (attrmode & AT_UNDERLINE)
! 2238: tputs(sc_u_out, 1, putchr);
1.1.1.2 millert 2239: #else
2240: flush();
2241: SETCOLORS(nm_fg_color, nm_bg_color);
2242: #endif
1.1.1.3 ! shadchin 2243:
1.1.1.2 millert 2244: attrmode = AT_NORMAL;
1.1 etheisen 2245: }
2246:
2247: public void
1.1.1.3 ! shadchin 2248: at_switch(attr)
! 2249: int attr;
1.1 etheisen 2250: {
1.1.1.3 ! shadchin 2251: int new_attrmode = apply_at_specials(attr);
! 2252: int ignore_modes = AT_ANSI;
1.1 etheisen 2253:
1.1.1.3 ! shadchin 2254: if ((new_attrmode & ~ignore_modes) != (attrmode & ~ignore_modes))
! 2255: {
! 2256: at_exit();
! 2257: at_enter(attr);
! 2258: }
1.1 etheisen 2259: }
2260:
1.1.1.3 ! shadchin 2261: public int
! 2262: is_at_equiv(attr1, attr2)
! 2263: int attr1;
! 2264: int attr2;
1.1 etheisen 2265: {
1.1.1.3 ! shadchin 2266: attr1 = apply_at_specials(attr1);
! 2267: attr2 = apply_at_specials(attr2);
! 2268:
! 2269: return (attr1 == attr2);
1.1 etheisen 2270: }
2271:
1.1.1.3 ! shadchin 2272: public int
! 2273: apply_at_specials(attr)
! 2274: int attr;
1.1 etheisen 2275: {
1.1.1.3 ! shadchin 2276: if (attr & AT_BINARY)
! 2277: attr |= binattr;
! 2278: if (attr & AT_HILITE)
! 2279: attr |= AT_STANDOUT;
! 2280: attr &= ~(AT_BINARY|AT_HILITE);
! 2281:
! 2282: return attr;
1.1 etheisen 2283: }
2284:
1.1.1.2 millert 2285: #if 0 /* No longer used */
1.1 etheisen 2286: /*
2287: * Erase the character to the left of the cursor
2288: * and move the cursor left.
2289: */
2290: public void
2291: backspace()
2292: {
1.1.1.2 millert 2293: #if !MSDOS_COMPILER
1.1 etheisen 2294: /*
1.1.1.2 millert 2295: * Erase the previous character by overstriking with a space.
1.1 etheisen 2296: */
2297: tputs(sc_backspace, 1, putchr);
2298: putchr(' ');
2299: tputs(sc_backspace, 1, putchr);
1.1.1.2 millert 2300: #else
2301: #if MSDOS_COMPILER==MSOFTC
2302: struct rccoord tpos;
2303:
2304: flush();
2305: tpos = _gettextposition();
2306: if (tpos.col <= 1)
2307: return;
2308: _settextposition(tpos.row, tpos.col-1);
2309: _outtext(" ");
2310: _settextposition(tpos.row, tpos.col-1);
2311: #else
2312: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2313: cputs("\b");
2314: #else
2315: #if MSDOS_COMPILER==WIN32C
2316: COORD cpos;
2317: DWORD cChars;
2318: CONSOLE_SCREEN_BUFFER_INFO scr;
2319:
2320: flush();
2321: GetConsoleScreenBufferInfo(con_out, &scr);
2322: cpos = scr.dwCursorPosition;
2323: if (cpos.X <= 0)
2324: return;
2325: cpos.X--;
2326: SetConsoleCursorPosition(con_out, cpos);
2327: FillConsoleOutputCharacter(con_out, (TCHAR)' ', 1, cpos, &cChars);
2328: SetConsoleCursorPosition(con_out, cpos);
2329: #endif
2330: #endif
2331: #endif
2332: #endif
1.1 etheisen 2333: }
1.1.1.2 millert 2334: #endif /* 0 */
1.1 etheisen 2335:
2336: /*
2337: * Output a plain backspace, without erasing the previous char.
2338: */
2339: public void
2340: putbs()
2341: {
1.1.1.2 millert 2342: #if !MSDOS_COMPILER
1.1 etheisen 2343: tputs(sc_backspace, 1, putchr);
1.1.1.2 millert 2344: #else
2345: int row, col;
2346:
2347: flush();
2348: {
2349: #if MSDOS_COMPILER==MSOFTC
2350: struct rccoord tpos;
2351: tpos = _gettextposition();
2352: row = tpos.row;
2353: col = tpos.col;
2354: #else
2355: #if MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
2356: row = wherey();
2357: col = wherex();
2358: #else
2359: #if MSDOS_COMPILER==WIN32C
2360: CONSOLE_SCREEN_BUFFER_INFO scr;
2361: GetConsoleScreenBufferInfo(con_out, &scr);
2362: row = scr.dwCursorPosition.Y - scr.srWindow.Top + 1;
2363: col = scr.dwCursorPosition.X - scr.srWindow.Left + 1;
2364: #endif
2365: #endif
2366: #endif
2367: }
2368: if (col <= 1)
2369: return;
2370: _settextposition(row, col-1);
2371: #endif /* MSDOS_COMPILER */
1.1 etheisen 2372: }
1.1.1.2 millert 2373:
2374: #if MSDOS_COMPILER==WIN32C
2375: /*
2376: * Determine whether an input character is waiting to be read.
2377: */
2378: static int
2379: win32_kbhit(tty)
2380: HANDLE tty;
2381: {
2382: INPUT_RECORD ip;
2383: DWORD read;
2384:
2385: if (keyCount > 0)
2386: return (TRUE);
2387:
2388: currentKey.ascii = 0;
2389: currentKey.scan = 0;
2390:
2391: /*
2392: * Wait for a real key-down event, but
2393: * ignore SHIFT and CONTROL key events.
2394: */
2395: do
2396: {
2397: PeekConsoleInput(tty, &ip, 1, &read);
2398: if (read == 0)
2399: return (FALSE);
2400: ReadConsoleInput(tty, &ip, 1, &read);
2401: } while (ip.EventType != KEY_EVENT ||
2402: ip.Event.KeyEvent.bKeyDown != TRUE ||
2403: ip.Event.KeyEvent.wVirtualScanCode == 0 ||
2404: ip.Event.KeyEvent.wVirtualKeyCode == VK_SHIFT ||
2405: ip.Event.KeyEvent.wVirtualKeyCode == VK_CONTROL ||
2406: ip.Event.KeyEvent.wVirtualKeyCode == VK_MENU);
2407:
2408: currentKey.ascii = ip.Event.KeyEvent.uChar.AsciiChar;
2409: currentKey.scan = ip.Event.KeyEvent.wVirtualScanCode;
2410: keyCount = ip.Event.KeyEvent.wRepeatCount;
2411:
2412: if (ip.Event.KeyEvent.dwControlKeyState &
2413: (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED))
2414: {
2415: switch (currentKey.scan)
2416: {
2417: case PCK_ALT_E: /* letter 'E' */
2418: currentKey.ascii = 0;
2419: break;
2420: }
2421: } else if (ip.Event.KeyEvent.dwControlKeyState &
2422: (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
2423: {
2424: switch (currentKey.scan)
2425: {
2426: case PCK_RIGHT: /* right arrow */
2427: currentKey.scan = PCK_CTL_RIGHT;
2428: break;
2429: case PCK_LEFT: /* left arrow */
2430: currentKey.scan = PCK_CTL_LEFT;
2431: break;
2432: case PCK_DELETE: /* delete */
2433: currentKey.scan = PCK_CTL_DELETE;
2434: break;
2435: }
2436: }
2437: return (TRUE);
2438: }
2439:
2440: /*
2441: * Read a character from the keyboard.
2442: */
2443: public char
2444: WIN32getch(tty)
2445: int tty;
2446: {
2447: int ascii;
2448:
2449: if (pending_scancode)
2450: {
2451: pending_scancode = 0;
2452: return ((char)(currentKey.scan & 0x00FF));
2453: }
2454:
2455: while (win32_kbhit((HANDLE)tty) == FALSE)
2456: {
2457: Sleep(20);
2458: if (ABORT_SIGS())
2459: return ('\003');
2460: continue;
2461: }
2462: keyCount --;
2463: ascii = currentKey.ascii;
2464: /*
2465: * On PC's, the extended keys return a 2 byte sequence beginning
2466: * with '00', so if the ascii code is 00, the next byte will be
2467: * the lsb of the scan code.
2468: */
2469: pending_scancode = (ascii == 0x00);
2470: return ((char)ascii);
1.1.1.3 ! shadchin 2471: }
! 2472: #endif
! 2473:
! 2474: #if MSDOS_COMPILER
! 2475: /*
! 2476: */
! 2477: public void
! 2478: WIN32setcolors(fg, bg)
! 2479: int fg;
! 2480: int bg;
! 2481: {
! 2482: SETCOLORS(fg, bg);
! 2483: }
! 2484:
! 2485: /*
! 2486: */
! 2487: public void
! 2488: WIN32textout(text, len)
! 2489: char *text;
! 2490: int len;
! 2491: {
! 2492: #if MSDOS_COMPILER==WIN32C
! 2493: DWORD written;
! 2494: WriteConsole(con_out, text, len, &written, NULL);
! 2495: #else
! 2496: char c = text[len];
! 2497: text[len] = '\0';
! 2498: cputs(text);
! 2499: text[len] = c;
! 2500: #endif
1.1.1.2 millert 2501: }
2502: #endif