/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <draw.h> Subfont*readsubfonti(Display*d, char *name, int fd, Image *ai, int dolock){	char hdr[3*12+4+1];	int n;	uchar *p;	Fontchar *fc;	Subfont *f;	Image *i; 	i = ai;	if(i == nil){		i = readimage(d, fd, dolock);		if(i == nil)			return nil;	}	if(read(fd, hdr, 3*12) != 3*12){		if(ai == nil)			freeimage(i);		werrstr("rdsubfonfile: header read error: %r");		return nil;	}	n = atoi(hdr);	p = malloc(6*(n+1));	if(p == nil)		goto Err;	if(read(fd, p, 6*(n+1)) != 6*(n+1)){		werrstr("rdsubfonfile: fontchar read error: %r");    Err:		if(ai == nil)			freeimage(i);		free(p);		return nil;	}	fc = malloc(sizeof(Fontchar)*(n+1));	if(fc == nil)		goto Err;	_unpackinfo(fc, p, n);	if(dolock)		lockdisplay(d);	f = allocsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);	if(dolock)		unlockdisplay(d);	if(f == nil){		free(fc);		goto Err;	}	free(p);	return f;} Subfont*readsubfont(Display *d, char *name, int fd, int dolock){	return readsubfonti(d, name, fd, nil, dolock);}