| rsc | 324891a | 2006-06-25 18:58:06 +0000 | [diff] [blame] | 1 | #include <u.h> |
| 2 | #include <libc.h> |
| 3 | #include <draw.h> |
| 4 | #include <memdraw.h> |
| 5 | |
| 6 | Memsubfont* |
| 7 | openmemsubfont(char *name) |
| 8 | { |
| 9 | Memsubfont *sf; |
| 10 | Memimage *i; |
| 11 | Fontchar *fc; |
| 12 | int fd, n; |
| 13 | char hdr[3*12+4+1]; |
| 14 | uchar *p; |
| 15 | |
| 16 | fd = open(name, OREAD); |
| 17 | if(fd < 0) |
| 18 | return nil; |
| 19 | p = nil; |
| 20 | i = readmemimage(fd); |
| 21 | if(i == nil) |
| 22 | goto Err; |
| 23 | if(read(fd, hdr, 3*12) != 3*12){ |
| 24 | werrstr("openmemsubfont: header read error: %r"); |
| 25 | goto Err; |
| 26 | } |
| 27 | n = atoi(hdr); |
| 28 | p = malloc(6*(n+1)); |
| 29 | if(p == nil) |
| 30 | goto Err; |
| 31 | if(read(fd, p, 6*(n+1)) != 6*(n+1)){ |
| 32 | werrstr("openmemsubfont: fontchar read error: %r"); |
| 33 | goto Err; |
| 34 | } |
| 35 | fc = malloc(sizeof(Fontchar)*(n+1)); |
| 36 | if(fc == nil) |
| 37 | goto Err; |
| 38 | _unpackinfo(fc, p, n); |
| 39 | sf = allocmemsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i); |
| 40 | if(sf == nil){ |
| 41 | free(fc); |
| 42 | goto Err; |
| 43 | } |
| 44 | free(p); |
| 45 | return sf; |
| 46 | Err: |
| 47 | close(fd); |
| 48 | if (i != nil) |
| 49 | freememimage(i); |
| 50 | if (p != nil) |
| 51 | free(p); |
| 52 | return nil; |
| 53 | } |
