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 		if(scale > 1) {
20 			free(t);
21 			return smprint("%d*%s", scale, cfname);
22 		}
23 		return t;
24 	}
25 	if(t[0] != '/'){
26 		tmp2 = strdup(base);
27 		u = utfrrune(tmp2, '/');
28 		if(u)
29 			u[0] = 0;
30 		else
31 			strcpy(tmp2, ".");
32 		tmp1 = smprint("%s/%s", tmp2, t);
33 		free(tmp2);
34 		free(t);
35 		t = tmp1;
36 	}
37 
38 	if(maxdepth > 8)
39 		maxdepth = 8;
40 
41 	for(i=3; i>=0; i--){
42 		if((1<<i) > maxdepth)
43 			continue;
44 		/* try i-bit grey */
45 		tmp2 = smprint("%s.%d", t, i);
46 		if(access(tmp2, AREAD) == 0) {
47 			free(t);
48 			if(scale > 1) {
49 				t = smprint("%d*%s", scale, tmp2);
50 				free(tmp2);
51 				tmp2 = t;
52 			}
53 			return tmp2;
54 		}
55 		free(tmp2);
56 	}
57 
58 	/* try default */
59 	if(strncmp(t, "/mnt/font/", 10) == 0 || access(t, AREAD) == 0) {
60 		if(scale > 1) {
61 			tmp2 = smprint("%d*%s", scale, t);
62 			free(t);
63 			t = tmp2;
64 		}
65 		return t;
66 	}
67 
68 	return nil;
69 }