1 #include "lib9.h"
2 #include "draw.h"
3 #include "memdraw.h"
4
5 Memsubfont*
openmemsubfont(char * name)6 openmemsubfont(char *name)
7 {
8 Memsubfont *sf;
9 Memimage *i;
10 Fontchar *fc;
11 int fd, n;
12 char hdr[3*12+4+1];
13 uchar *p = nil;
14
15 fd = open(name, OREAD);
16 if(fd < 0)
17 return nil;
18 i = readmemimage(fd);
19 if(i == nil)
20 goto Err;
21 if(read(fd, hdr, 3*12) != 3*12){
22 werrstr("openmemsubfont: header read error: %r");
23 goto Err;
24 }
25 n = atoi(hdr);
26 p = malloc(6*(n+1));
27 if(p == nil)
28 goto Err;
29 if(read(fd, p, 6*(n+1)) != 6*(n+1)){
30 werrstr("openmemsubfont: fontchar read error: %r");
31 goto Err;
32 }
33 fc = malloc(sizeof(Fontchar)*(n+1));
34 if(fc == nil)
35 goto Err;
36 _unpackinfo(fc, p, n);
37 sf = allocmemsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
38 if(sf == nil){
39 free(fc);
40 goto Err;
41 }
42 free(p);
43 return sf;
44 Err:
45 close(fd);
46 if (i != nil)
47 freememimage(i);
48 if (p != nil)
49 free(p);
50 return nil;
51 }
52