1 #include <u.h>
2 #include <libc.h>
3 #include <bio.h>
4 
5 char *argv0;
6 
7 int
8 openlog(char *name)
9 {
10 	int fd;
11 
12 	fd = open(name, OWRITE);
13 	if(fd < 0)
14 		fd = create(name, OWRITE, DMAPPEND|0666);
15 	if(fd < 0){
16 		fprint(2, "%s: can't open %s: %r\n", argv0, name);
17 		return -1;
18 	}
19 	seek(fd, 0, 2);
20 	return fd;
21 }
22 
23 void
24 main(int argc, char **argv)
25 {
26 	Biobuf in;
27 	int fd;
28 	char *p, *t;
29 	char buf[8192];
30 
31 	argv0 = argv[0];
32 	if(argc !=  3){
33 		fprint(2, "usage: %s console logfile \n", argv0);
34 		exits("usage");
35 	}
36 
37 	if(strcmp(argv[1], "-") == 0)
38 		fd = 1;
39 	else
40 		fd = open(argv[1], OREAD);
41 	if(fd < 0){
42 		fprint(2, "%s: can't open %s: %r\n", argv0, argv[1]);
43 		exits("open");
44 	}
45 	Binit(&in, fd, OREAD);
46 
47 	fd = openlog(argv[2]);
48 
49 	for(;;){
50 		if(p = Brdline(&in, '\n')){
51 			p[Blinelen(&in)-1] = 0;
52 			t = ctime(time(0));
53 			t[19] = 0;
54 			if(fprint(fd, "%s: %s\n", t, p) < 0){
55 				close(fd);
56 				fd = openlog(argv[2]);
57 				fprint(fd, "%s: %s\n", t, p);
58 			}
59 		} else if(Blinelen(&in) == 0)	// true eof
60 			break;
61 		else {
62 			Bread(&in, buf, sizeof buf);
63 		}
64 	}
65 	exits(0);
66 }