[unix-history] / usr / src / usr.bin / systat / keyboard.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)keyboard.c	5.1 (Berkeley) %G%";
#endif not lint

/*
 * Keyboard input support.
 */

#include "systat.h"
#include <ctype.h>

keyboard()
{
        char ch, line[80];
	int oldmask;

        for (;;) {
                col = 0;
                move(CMDLINE, 0);
                do {
                        refresh();
                        ch = getch() & 0177;
                        if (ch == 0177 && ferror(stdin)) {
                                clearerr(stdin);
                                continue;
                        }
                        if (ch >= 'A' && ch <= 'Z')
                                ch += 'a' - 'A';
                        if (col == 0) {
#define	mask(s)	(1 << ((s) - 1))
                                if (ch == CTRL(l)) {
					oldmask = sigblock(mask(SIGALRM));
					wrefresh(curscr);
					sigsetmask(oldmask);
                                        continue;
                                }
				if (ch == CTRL(g)) {
					oldmask = sigblock(mask(SIGALRM));
					status();
					sigsetmask(oldmask);
					continue;
				}
                                if (ch != ':')
                                        continue;
                                move(CMDLINE, 0);
                                clrtoeol();
                        }
                        if (ch == _tty.sg_erase && col > 0) {
                                if (col == 1 && line[0] == ':')
                                        continue;
                                col--;
                                goto doerase;
                        }
                        if (ch == CTRL(w) && col > 0) {
                                while (--col >= 0 && isspace(line[col]))
                                        ;
                                col++;
                                while (--col >= 0 && !isspace(line[col]))
                                        if (col == 0 && line[0] == ':')
                                                break;
                                col++;
                                goto doerase;
                        }
                        if (ch == _tty.sg_kill && col > 0) {
                                col = 0;
                                if (line[0] == ':')
                                        col++;
                doerase:
                                move(CMDLINE, col);
                                clrtoeol();
                                continue;
                        }
                        if (isprint(ch) || ch == ' ') {
                                line[col] = ch;
                                mvaddch(CMDLINE, col, ch);
                                col++;
                        }
                } while (col == 0 || (ch != '\r' && ch != '\n'));
                line[col] = '\0';
		oldmask = sigblock(mask(SIGALRM));
                command(line + 1);
		sigsetmask(oldmask);
        }
	/*NOTREACHED*/
}
Commit	Line	Data
07ed1e09 KM	1	/*
	2	* Copyright (c) 1980 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
3d3ef1d9	7	#ifndef lint
07ed1e09 KM	8	static char sccsid[] = "@(#)keyboard.c 5.1 (Berkeley) %G%";
07ed1e09 KM	9	#endif not lint
3d3ef1d9 SL	10
	11	/*
	12	* Keyboard input support.
	13	*/
	14
	15	#include "systat.h"
855ff304	16	#include <ctype.h>
3d3ef1d9 SL	17
	18	keyboard()
	19	{
	20	char ch, line[80];
855ff304	21	int oldmask;
3d3ef1d9 SL	22
	23	for (;;) {
	24	col = 0;
855ff304	25	move(CMDLINE, 0);
3d3ef1d9 SL	26	do {
	27	refresh();
	28	ch = getch() & 0177;
	29	if (ch == 0177 && ferror(stdin)) {
	30	clearerr(stdin);
	31	continue;
	32	}
	33	if (ch >= 'A' && ch <= 'Z')
	34	ch += 'a' - 'A';
	35	if (col == 0) {
	36	#define mask(s) (1 << ((s) - 1))
	37	if (ch == CTRL(l)) {
855ff304	38	oldmask = sigblock(mask(SIGALRM));
3d3ef1d9 SL	39	wrefresh(curscr);
	40	sigsetmask(oldmask);
	41	continue;
	42	}
	43	if (ch == CTRL(g)) {
855ff304	44	oldmask = sigblock(mask(SIGALRM));
3d3ef1d9	45	status();
855ff304	46	sigsetmask(oldmask);
3d3ef1d9 SL	47	continue;
	48	}
	49	if (ch != ':')
	50	continue;
855ff304	51	move(CMDLINE, 0);
3d3ef1d9 SL	52	clrtoeol();
	53	}
	54	if (ch == _tty.sg_erase && col > 0) {
	55	if (col == 1 && line[0] == ':')
	56	continue;
	57	col--;
	58	goto doerase;
	59	}
	60	if (ch == CTRL(w) && col > 0) {
	61	while (--col >= 0 && isspace(line[col]))
	62	;
	63	col++;
	64	while (--col >= 0 && !isspace(line[col]))
	65	if (col == 0 && line[0] == ':')
	66	break;
	67	col++;
	68	goto doerase;
	69	}
	70	if (ch == _tty.sg_kill && col > 0) {
	71	col = 0;
	72	if (line[0] == ':')
	73	col++;
	74	doerase:
855ff304	75	move(CMDLINE, col);
3d3ef1d9 SL	76	clrtoeol();
	77	continue;
	78	}
974755eb	79	if (isprint(ch) \|\| ch == ' ') {
3d3ef1d9	80	line[col] = ch;
855ff304	81	mvaddch(CMDLINE, col, ch);
3d3ef1d9 SL	82	col++;
	83	}
	84	} while (col == 0 \|\| (ch != '\r' && ch != '\n'));
	85	line[col] = '\0';
855ff304	86	oldmask = sigblock(mask(SIGALRM));
3d3ef1d9	87	command(line + 1);
855ff304	88	sigsetmask(oldmask);
3d3ef1d9 SL	89	}
	90	/NOTREACHED/
	91	}