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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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Subfont*
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readsubfonti(Display*d, char *name, int fd, Image *ai, int dolock)
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{
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	char hdr[3*12+4+1];
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	int n;
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	uchar *p;
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	Fontchar *fc;
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	Subfont *f;
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	Image *i;
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	i = ai;
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	if(i == nil){
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		i = readimage(d, fd, dolock);
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		if(i == nil)
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			return nil;
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	}
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	if(read(fd, hdr, 3*12) != 3*12){
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		if(ai == nil)
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			freeimage(i);
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		werrstr("rdsubfonfile: header read error: %r");
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		return nil;
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	}
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	n = atoi(hdr);
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	p = malloc(6*(n+1));
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	if(p == nil)
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		goto Err;
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	if(read(fd, p, 6*(n+1)) != 6*(n+1)){
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		werrstr("rdsubfonfile: fontchar read error: %r");
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    Err:
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		if(ai == nil)
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			freeimage(i);
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		free(p);
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		return nil;
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	}
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	fc = malloc(sizeof(Fontchar)*(n+1));
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	if(fc == nil)
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		goto Err;
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	_unpackinfo(fc, p, n);
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	if(dolock)
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		lockdisplay(d);
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	f = allocsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
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	if(dolock)
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		unlockdisplay(d);
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	if(f == nil){
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		free(fc);
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		goto Err;
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	}
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	free(p);
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	return f;
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}
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Subfont*
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readsubfont(Display *d, char *name, int fd, int dolock)
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{
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	return readsubfonti(d, name, fd, nil, dolock);
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}