/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h> voidusage(void){	fprint(2, "usage: %s [-q] [-t secs] goodstring [badstring ...]\n", argv0);	exits("usage");} voidcatch(void*, char *s){	exits(s);} intwritewithoutcr(int fd, char *p, int i){	char *q, *e; 	/* dump cr's */	for(e = p+i; p < e; ){		q = memchr(p, '\r', e-p);		if(q == nil)			break;		if(q > p)			if(write(fd, p, q-p) < 0)				return -1;		p = q+1;	}	if(p < e)		if(write(fd, p, e-p) < 0)			return -1;	return i;} voidmain(int argc, char **argv){	int timeout = 5*60;	int quiet = 0;	int ignorecase = 0;	int fd, i, m, n, bsize;	char *good;	char *buf;	int sofar; 	ARGBEGIN {	case 'i':		ignorecase = 1;		break;	case 't':		timeout = atoi(EARGF(usage()));		break;	case 'q':		quiet = 1;		break;	} ARGEND; 	if(argc < 1)		usage(); 	good = argv[0];	n = strlen(good); 	for(i = 1; i < argc; i++){		m = strlen(argv[i]);		if(m > n)			n = m;	} 	fd = open("/dev/cons", ORDWR);	if(fd < 0)		sysfatal("opening /dev/cons: %r"); 	bsize = n+4096;	buf = malloc(bsize+1); 	sofar = 0;	alarm(timeout*1000);	for(;;){		if(sofar > n){			memmove(buf, &buf[sofar-n], n);			sofar = n;		}		i = read(0, buf+sofar, bsize);		if(i <= 0)			exits("EOF");		if(!quiet)			writewithoutcr(fd, buf+sofar, i);		sofar += i;		buf[sofar] = 0;		if(ignorecase){			if(cistrstr(buf, good))				break;			for(i = 1; i < argc; i++)				if(cistrstr(buf, argv[i]))					exits(argv[i]);		} else {			if(strstr(buf, good))				break;			for(i = 1; i < argc; i++)				if(strstr(buf, argv[i]))					exits(argv[i]);		}	} 	exits(0);}