1 files changed, 58 insertions, 0 deletions
diff --git a/libdraw/readsubfont.c b/libdraw/readsubfont.c
new file mode 100644
index 00000000..50933b7d
--- /dev/null
+++ b/libdraw/readsubfont.c
@@ -0,0 +1,58 @@
+#include "lib9.h"
+#include "kernel.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|2);
+		if(i == nil)
+			return nil;
+	}
+	if(libreadn(fd, hdr, 3*12) != 3*12){
+		if(ai == nil)
+			freeimage(i);
+		kwerrstr("rdsubfonfile: header read error: %r");
+		return nil;
+	}
+	n = atoi(hdr);
+	p = malloc(6*(n+1));
+	if(p == nil)
+		return nil;
+	if(libreadn(fd, p, 6*(n+1)) != 6*(n+1)){
+		kwerrstr("rdsubfonfile: fontchar read error: %r");
+    Err:
+		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);
+}