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keyboard.c revision 1.2 
      1 /*	$NetBSD: keyboard.c,v 1.2 1995/01/20 08:51:59 jtc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)keyboard.c	8.1 (Berkeley) 6/6/93";
     39 #endif
     40 static char rcsid[] = "$NetBSD: keyboard.c,v 1.2 1995/01/20 08:51:59 jtc Exp $";
     41 #endif /* not lint */
     42 
     43 #include <ctype.h>
     44 #include <signal.h>
     45 #include <termios.h>
     46 
     47 #include "systat.h"
     48 #include "extern.h"
     49 
     50 int
     51 keyboard()
     52 {
     53         char ch, line[80];
     54 	int oldmask;
     55 
     56         for (;;) {
     57                 col = 0;
     58                 move(CMDLINE, 0);
     59                 do {
     60                         refresh();
     61                         ch = getch() & 0177;
     62                         if (ch == 0177 && ferror(stdin)) {
     63                                 clearerr(stdin);
     64                                 continue;
     65                         }
     66                         if (ch >= 'A' && ch <= 'Z')
     67                                 ch += 'a' - 'A';
     68                         if (col == 0) {
     69 #define	mask(s)	(1 << ((s) - 1))
     70                                 if (ch == CTRL('l')) {
     71 					oldmask = sigblock(mask(SIGALRM));
     72 					wrefresh(curscr);
     73 					sigsetmask(oldmask);
     74                                         continue;
     75                                 }
     76 				if (ch == CTRL('g')) {
     77 					oldmask = sigblock(mask(SIGALRM));
     78 					status();
     79 					sigsetmask(oldmask);
     80 					continue;
     81 				}
     82                                 if (ch != ':')
     83                                         continue;
     84                                 move(CMDLINE, 0);
     85                                 clrtoeol();
     86                         }
     87                         if (ch == erasechar() && col > 0) {
     88                                 if (col == 1 && line[0] == ':')
     89                                         continue;
     90                                 col--;
     91                                 goto doerase;
     92                         }
     93                         if (ch == CTRL('w') && col > 0) {
     94                                 while (--col >= 0 && isspace(line[col]))
     95                                         ;
     96                                 col++;
     97                                 while (--col >= 0 && !isspace(line[col]))
     98                                         if (col == 0 && line[0] == ':')
     99                                                 break;
    100                                 col++;
    101                                 goto doerase;
    102                         }
    103                         if (ch == killchar() && col > 0) {
    104                                 col = 0;
    105                                 if (line[0] == ':')
    106                                         col++;
    107                 doerase:
    108                                 move(CMDLINE, col);
    109                                 clrtoeol();
    110                                 continue;
    111                         }
    112                         if (isprint(ch) || ch == ' ') {
    113                                 line[col] = ch;
    114                                 mvaddch(CMDLINE, col, ch);
    115                                 col++;
    116                         }
    117                 } while (col == 0 || (ch != '\r' && ch != '\n'));
    118                 line[col] = '\0';
    119 		oldmask = sigblock(mask(SIGALRM));
    120                 command(line + 1);
    121 		sigsetmask(oldmask);
    122         }
    123 	/*NOTREACHED*/
    124 }
    125