1 #include <fmt.h>
2 #include "bio.h"
3 
4 Biobuf bout;
5 
6 void
7 bcat(Biobuf *b, char *name)
8 {
9 	char buf[1000];
10 	int n;
11 
12 	while((n = Bread(b, buf, sizeof buf)) > 0){
13 		if(Bwrite(&bout, buf, n) < 0)
14 			fprint(2, "writing during %s: %r\n", name);
15 	}
16 	if(n < 0)
17 		fprint(2, "reading %s: %r\n", name);
18 }
19 
20 int
21 main(int argc, char **argv)
22 {
23 	int i;
24 	Biobuf b, *bp;
25 	Fmt fmt;
26 
27 	Binit(&bout, 1, O_WRONLY);
28 	Bfmtinit(&fmt, &bout);
29 	fmtprint(&fmt, "hello, world\n");
30 	Bfmtflush(&fmt);
31 
32 	if(argc == 1){
33 		Binit(&b, 0, O_RDONLY);
34 		bcat(&b, "<stdin>");
35 	}else{
36 		for(i=1; i<argc; i++){
37 			if((bp = Bopen(argv[i], O_RDONLY)) == 0){
38 				fprint(2, "Bopen %s: %r\n", argv[i]);
39 				continue;
40 			}
41 			bcat(bp, argv[i]);
42 			Bterm(bp);
43 		}
44 	}
45 	exit(0);
46 }