1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 
5 /*
6  * Default version: treat as file name
7  */
8 
9 int _fontpipe(char*);
10 
11 Subfont*
12 _getsubfont(Display *d, char *name)
13 {
14 	int fd;
15 	Subfont *f;
16 
17 	fd = open(name, OREAD);
18 	if(fd < 0 && strncmp(name, "/mnt/font/", 10) == 0)
19 		fd = _fontpipe(name+10);
20 
21 	if(fd < 0){
22 		fprint(2, "getsubfont: can't open %s: %r\n", name);
23 		return 0;
24 	}
25 	/*
26 	 * unlock display so i/o happens with display released, unless
27 	 * user is doing his own locking, in which case this could break things.
28 	 * _getsubfont is called only from string.c and stringwidth.c,
29 	 * which are known to be safe to have this done.
30 	 */
31 	if(d && d->locking == 0)
32 		unlockdisplay(d);
33 	f = readsubfont(d, name, fd, d && d->locking==0);
34 	if(d && d->locking == 0)
35 		lockdisplay(d);
36 	if(f == 0)
37 		fprint(2, "getsubfont: can't read %s: %r\n", name);
38 	close(fd);
39 	return f;
40 }