1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 
5 /*
6  * Default version: convert to file name
7  */
8 
9 char*
10 subfontname(char *cfname, char *fname, int maxdepth)
11 {
12 	char *t, *u, *tmp1, *tmp2, *base;
13 	int i, scale;
14 	
15 	scale = parsefontscale(fname, &base);
16 
17 	t = strdup(cfname);  /* t is the return string */
18 	if(strcmp(cfname, "*default*") == 0)
19 		return t;
20 	if(t[0] != '/'){
21 		tmp2 = strdup(base);
22 		u = utfrrune(tmp2, '/');
23 		if(u)
24 			u[0] = 0;
25 		else
26 			strcpy(tmp2, ".");
27 		tmp1 = smprint("%s/%s", tmp2, t);
28 		free(tmp2);
29 		free(t);
30 		t = tmp1;
31 	}
32 
33 	if(maxdepth > 8)
34 		maxdepth = 8;
35 
36 	for(i=3; i>=0; i--){
37 		if((1<<i) > maxdepth)
38 			continue;
39 		/* try i-bit grey */
40 		tmp2 = smprint("%s.%d", t, i);
41 		if(access(tmp2, AREAD) == 0) {
42 			free(t);
43 			if(scale > 1) {
44 				t = smprint("%d*%s", scale, tmp2);
45 				free(tmp2);
46 				tmp2 = t;
47 			}
48 			return tmp2;
49 		}
50 	}
51 
52 	/* try default */
53 	if(strncmp(t, "/mnt/font/", 10) == 0 || access(t, AREAD) == 0) {
54 		if(scale > 1) {
55 			tmp2 = smprint("%d*%s", scale, t);
56 			free(t);
57 			t = tmp2;
58 		}
59 		return t;
60 	}
61 
62 	return nil;
63 }