usr.bin/systat/keyboard.c

9b50d902SRodney W. Grimes/*-
9b50d902SRodney W. Grimes * Copyright (c) 1980, 1992, 1993
9b50d902SRodney W. Grimes *	The Regents of the University of California.  All rights reserved.
9b50d902SRodney W. Grimes *
9b50d902SRodney W. Grimes * Redistribution and use in source and binary forms, with or without
9b50d902SRodney W. Grimes * modification, are permitted provided that the following conditions
9b50d902SRodney W. Grimes * are met:
9b50d902SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright
9b50d902SRodney W. Grimes *    notice, this list of conditions and the following disclaimer.
9b50d902SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright
9b50d902SRodney W. Grimes *    notice, this list of conditions and the following disclaimer in the
9b50d902SRodney W. Grimes *    documentation and/or other materials provided with the distribution.
9b50d902SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software
9b50d902SRodney W. Grimes *    must display the following acknowledgement:
9b50d902SRodney W. Grimes *	This product includes software developed by the University of
9b50d902SRodney W. Grimes *	California, Berkeley and its contributors.
9b50d902SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors
9b50d902SRodney W. Grimes *    may be used to endorse or promote products derived from this software
9b50d902SRodney W. Grimes *    without specific prior written permission.
9b50d902SRodney W. Grimes *
9b50d902SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
9b50d902SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
9b50d902SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
9b50d902SRodney W. Grimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
9b50d902SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
9b50d902SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
9b50d902SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
9b50d902SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
9b50d902SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
9b50d902SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
9b50d902SRodney W. Grimes * SUCH DAMAGE.
9b50d902SRodney W. Grimes */
9b50d902SRodney W. Grimes
9ff712b0SMark Murray#include <sys/cdefs.h>
9ff712b0SMark Murray
9ff712b0SMark Murray__FBSDID("$FreeBSD$");
9ff712b0SMark Murray
9ff712b0SMark Murray#ifdef lint
9ff712b0SMark Murraystatic const char sccsid[] = "@(#)keyboard.c	8.1 (Berkeley) 6/6/93";
9ff712b0SMark Murray#endif
9b50d902SRodney W. Grimes
9b50d902SRodney W. Grimes#include <ctype.h>
9b50d902SRodney W. Grimes#include <signal.h>
9b50d902SRodney W. Grimes#include <termios.h>
9b50d902SRodney W. Grimes
9b50d902SRodney W. Grimes#include "systat.h"
9b50d902SRodney W. Grimes#include "extern.h"
9b50d902SRodney W. Grimes
9b50d902SRodney W. Grimesint
93b9f504SXin LIkeyboard(void)
9b50d902SRodney W. Grimes{
9b50d902SRodney W. Grimes        char ch, line[80];
9b50d902SRodney W. Grimes	int oldmask;
9b50d902SRodney W. Grimes
9b50d902SRodney W. Grimes        for (;;) {
9b50d902SRodney W. Grimes                col = 0;
9b50d902SRodney W. Grimes                move(CMDLINE, 0);
9b50d902SRodney W. Grimes                do {
9b50d902SRodney W. Grimes                        refresh();
9b50d902SRodney W. Grimes                        ch = getch() & 0177;
9b50d902SRodney W. Grimes                        if (ch == 0177 && ferror(stdin)) {
9b50d902SRodney W. Grimes                                clearerr(stdin);
9b50d902SRodney W. Grimes                                continue;
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                        if (ch >= 'A' && ch <= 'Z')
9b50d902SRodney W. Grimes                                ch += 'a' - 'A';
9b50d902SRodney W. Grimes                        if (col == 0) {
9b50d902SRodney W. Grimes#define	mask(s)	(1 << ((s) - 1))
9b50d902SRodney W. Grimes                                if (ch == CTRL('l')) {
9b50d902SRodney W. Grimes					oldmask = sigblock(mask(SIGALRM));
9b50d902SRodney W. Grimes					wrefresh(curscr);
9b50d902SRodney W. Grimes					sigsetmask(oldmask);
9b50d902SRodney W. Grimes                                        continue;
9b50d902SRodney W. Grimes                                }
9b50d902SRodney W. Grimes				if (ch == CTRL('g')) {
9b50d902SRodney W. Grimes					oldmask = sigblock(mask(SIGALRM));
9b50d902SRodney W. Grimes					status();
9b50d902SRodney W. Grimes					sigsetmask(oldmask);
9b50d902SRodney W. Grimes					continue;
9b50d902SRodney W. Grimes				}
9b50d902SRodney W. Grimes                                if (ch != ':')
9b50d902SRodney W. Grimes                                        continue;
9b50d902SRodney W. Grimes                                move(CMDLINE, 0);
9b50d902SRodney W. Grimes                                clrtoeol();
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                        if (ch == erasechar() && col > 0) {
9b50d902SRodney W. Grimes                                if (col == 1 && line[0] == ':')
9b50d902SRodney W. Grimes                                        continue;
9b50d902SRodney W. Grimes                                col--;
9b50d902SRodney W. Grimes                                goto doerase;
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                        if (ch == CTRL('w') && col > 0) {
9b50d902SRodney W. Grimes                                while (--col >= 0 && isspace(line[col]))
9b50d902SRodney W. Grimes                                        ;
9b50d902SRodney W. Grimes                                col++;
9b50d902SRodney W. Grimes                                while (--col >= 0 && !isspace(line[col]))
9b50d902SRodney W. Grimes                                        if (col == 0 && line[0] == ':')
9b50d902SRodney W. Grimes                                                break;
9b50d902SRodney W. Grimes                                col++;
9b50d902SRodney W. Grimes                                goto doerase;
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                        if (ch == killchar() && col > 0) {
9b50d902SRodney W. Grimes                                col = 0;
9b50d902SRodney W. Grimes                                if (line[0] == ':')
9b50d902SRodney W. Grimes                                        col++;
9b50d902SRodney W. Grimes                doerase:
9b50d902SRodney W. Grimes                                move(CMDLINE, col);
9b50d902SRodney W. Grimes                                clrtoeol();
9b50d902SRodney W. Grimes                                continue;
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                        if (isprint(ch) || ch == ' ') {
9b50d902SRodney W. Grimes                                line[col] = ch;
9b50d902SRodney W. Grimes                                mvaddch(CMDLINE, col, ch);
9b50d902SRodney W. Grimes                                col++;
9b50d902SRodney W. Grimes                        }
9b50d902SRodney W. Grimes                } while (col == 0 || (ch != '\r' && ch != '\n'));
9b50d902SRodney W. Grimes                line[col] = '\0';
9b50d902SRodney W. Grimes		oldmask = sigblock(mask(SIGALRM));
9b50d902SRodney W. Grimes                command(line + 1);
9b50d902SRodney W. Grimes		sigsetmask(oldmask);
9b50d902SRodney W. Grimes        }
9b50d902SRodney W. Grimes	/*NOTREACHED*/
9b50d902SRodney W. Grimes}