1 b3994ec5 2003-12-11 devnull #include <u.h>
 2 b3994ec5 2003-12-11 devnull #include <libc.h>
 3 b3994ec5 2003-12-11 devnull 
 4 b3994ec5 2003-12-11 devnull /*
 5 b3994ec5 2003-12-11 devnull  * I don't want too many of these,
 6 b3994ec5 2003-12-11 devnull  * but the ones we have are just too useful. 
 7 b3994ec5 2003-12-11 devnull  */
 8 b3994ec5 2003-12-11 devnull static struct {
 9 b3994ec5 2003-12-11 devnull 	char *old;
10 b3994ec5 2003-12-11 devnull 	char *new;
11 b3994ec5 2003-12-11 devnull } replace[] = {
12 b3994ec5 2003-12-11 devnull 	"#9", nil,	/* must be first */
13 b3994ec5 2003-12-11 devnull 	"#d", "/dev/fd",
14 b3994ec5 2003-12-11 devnull };
15 b3994ec5 2003-12-11 devnull 
16 b3994ec5 2003-12-11 devnull char*
17 8ad51794 2004-03-25 devnull plan9translate(char *old)
18 b3994ec5 2003-12-11 devnull {
19 b3994ec5 2003-12-11 devnull 	char *new;
20 b3994ec5 2003-12-11 devnull 	int i, olen, nlen, len;
21 b3994ec5 2003-12-11 devnull 
22 b3994ec5 2003-12-11 devnull 	if(replace[0].new == nil){
23 b3994ec5 2003-12-11 devnull 		replace[0].new = getenv("PLAN9");
24 b3994ec5 2003-12-11 devnull 		if(replace[0].new == nil)
25 b3994ec5 2003-12-11 devnull 			replace[0].new = "/usr/local/plan9";
26 b3994ec5 2003-12-11 devnull 	}
27 b3994ec5 2003-12-11 devnull 
28 b3994ec5 2003-12-11 devnull 	for(i=0; i<nelem(replace); i++){
29 b3994ec5 2003-12-11 devnull 		if(!replace[i].new)
30 b3994ec5 2003-12-11 devnull 			continue;
31 b3994ec5 2003-12-11 devnull 		olen = strlen(replace[i].old);
32 b3994ec5 2003-12-11 devnull 		if(strncmp(old, replace[i].old, olen) != 0
33 b3994ec5 2003-12-11 devnull 		|| (old[olen] != '\0' && old[olen] != '/'))
34 b3994ec5 2003-12-11 devnull 			continue;
35 b3994ec5 2003-12-11 devnull 		nlen = strlen(replace[i].new);
36 b3994ec5 2003-12-11 devnull 		len = strlen(old)+nlen-olen;
37 b3994ec5 2003-12-11 devnull 		new = malloc(len+1);
38 b3994ec5 2003-12-11 devnull 		if(new == nil)
39 8ad51794 2004-03-25 devnull 			return "<out of memory>";
40 b3994ec5 2003-12-11 devnull 		strcpy(new, replace[i].new);
41 b3994ec5 2003-12-11 devnull 		strcpy(new+nlen, old+olen);
42 b3994ec5 2003-12-11 devnull 		assert(strlen(new) == len);
43 b3994ec5 2003-12-11 devnull 		return new;
44 b3994ec5 2003-12-11 devnull 	}
45 b3994ec5 2003-12-11 devnull 	return old;
46 b3994ec5 2003-12-11 devnull }