1 324891a5 2006-06-25 devnull #include <u.h>
 2 324891a5 2006-06-25 devnull #include <libc.h>
 3 324891a5 2006-06-25 devnull #include <draw.h>
 4 324891a5 2006-06-25 devnull #include <memdraw.h>
 5 324891a5 2006-06-25 devnull 
 6 324891a5 2006-06-25 devnull Memsubfont*
 7 324891a5 2006-06-25 devnull openmemsubfont(char *name)
 8 324891a5 2006-06-25 devnull {
 9 324891a5 2006-06-25 devnull 	Memsubfont *sf;
10 324891a5 2006-06-25 devnull 	Memimage *i;
11 324891a5 2006-06-25 devnull 	Fontchar *fc;
12 324891a5 2006-06-25 devnull 	int fd, n;
13 324891a5 2006-06-25 devnull 	char hdr[3*12+4+1];
14 324891a5 2006-06-25 devnull 	uchar *p;
15 324891a5 2006-06-25 devnull 
16 324891a5 2006-06-25 devnull 	fd = open(name, OREAD);
17 324891a5 2006-06-25 devnull 	if(fd < 0)
18 324891a5 2006-06-25 devnull 		return nil;
19 324891a5 2006-06-25 devnull 	p = nil;
20 324891a5 2006-06-25 devnull 	i = readmemimage(fd);
21 324891a5 2006-06-25 devnull 	if(i == nil)
22 324891a5 2006-06-25 devnull 		goto Err;
23 324891a5 2006-06-25 devnull 	if(read(fd, hdr, 3*12) != 3*12){
24 324891a5 2006-06-25 devnull 		werrstr("openmemsubfont: header read error: %r");
25 324891a5 2006-06-25 devnull 		goto Err;
26 324891a5 2006-06-25 devnull 	}
27 324891a5 2006-06-25 devnull 	n = atoi(hdr);
28 324891a5 2006-06-25 devnull 	p = malloc(6*(n+1));
29 324891a5 2006-06-25 devnull 	if(p == nil)
30 324891a5 2006-06-25 devnull 		goto Err;
31 324891a5 2006-06-25 devnull 	if(read(fd, p, 6*(n+1)) != 6*(n+1)){
32 324891a5 2006-06-25 devnull 		werrstr("openmemsubfont: fontchar read error: %r");
33 324891a5 2006-06-25 devnull 		goto Err;
34 324891a5 2006-06-25 devnull 	}
35 324891a5 2006-06-25 devnull 	fc = malloc(sizeof(Fontchar)*(n+1));
36 324891a5 2006-06-25 devnull 	if(fc == nil)
37 324891a5 2006-06-25 devnull 		goto Err;
38 324891a5 2006-06-25 devnull 	_unpackinfo(fc, p, n);
39 324891a5 2006-06-25 devnull 	sf = allocmemsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
40 324891a5 2006-06-25 devnull 	if(sf == nil){
41 324891a5 2006-06-25 devnull 		free(fc);
42 324891a5 2006-06-25 devnull 		goto Err;
43 324891a5 2006-06-25 devnull 	}
44 324891a5 2006-06-25 devnull 	free(p);
45 324891a5 2006-06-25 devnull 	return sf;
46 324891a5 2006-06-25 devnull Err:
47 324891a5 2006-06-25 devnull 	close(fd);
48 324891a5 2006-06-25 devnull 	if (i != nil)
49 324891a5 2006-06-25 devnull 		freememimage(i);
50 324891a5 2006-06-25 devnull 	if (p != nil)
51 324891a5 2006-06-25 devnull 		free(p);
52 324891a5 2006-06-25 devnull 	return nil;
53 324891a5 2006-06-25 devnull }