Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <memdraw.h>

Memsubfont*
openmemsubfont(char *name)
{
        Memsubfont *sf;
        Memimage *i;
        Fontchar *fc;
        int fd, n;
        char hdr[3*12+4+1];
        uchar *p;

        fd = open(name, OREAD);
        if(fd < 0)
                return nil;
        p = nil;
        i = readmemimage(fd);
        if(i == nil)
                goto Err;
        if(read(fd, hdr, 3*12) != 3*12){
                werrstr("openmemsubfont: header read error: %r");
                goto Err;
        }
        n = atoi(hdr);
        p = malloc(6*(n+1));
        if(p == nil)
                goto Err;
        if(read(fd, p, 6*(n+1)) != 6*(n+1)){
                werrstr("openmemsubfont: fontchar read error: %r");
                goto Err;
        }
        fc = malloc(sizeof(Fontchar)*(n+1));
        if(fc == nil)
                goto Err;
        _unpackinfo(fc, p, n);
        sf = allocmemsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
        if(sf == nil){
                free(fc);
                goto Err;
        }
        free(p);
        return sf;
Err:
        close(fd);
        if (i != nil)
                freememimage(i);
        if (p != nil)
                free(p);
        return nil;
}