ref: b47c096c8ceb7b96820ec886146a674eb9ad2c7b
dir: /sys/src/libdraw/getsubfont.c/
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Default version: treat as file name
*/
Subfont*
_getsubfont(Display *d, char *name)
{
int dolock, fd;
Subfont *f;
/*
* unlock display so i/o happens with display released, unless
* user is doing his own locking, in which case this could break things.
* _getsubfont is called only from string.c and stringwidth.c,
* which are known to be safe to have this done.
*/
dolock = d != nil && d->locking == 0;
if(dolock)
unlockdisplay(d);
fd = open(name, OREAD);
if(fd < 0) {
fprint(2, "getsubfont: can't open %s: %r\n", name);
f = nil;
} else {
f = readsubfont(d, name, fd, dolock);
if(f == nil)
fprint(2, "getsubfont: can't read %s: %r\n", name);
close(fd);
}
if(dolock)
lockdisplay(d);
return f;
}