store max possible glyphs bound

2 files changed, 2 insertions, 1 deletions

diff --git a/ucf.c b/ucf.c
index 94caa40..8c4a487 100644
--- a/ucf.c
+++ b/ucf.c
@@ -29,6 +29,7 @@ int ucf_init(struct ucf *f, const unsigned char *map, size_t len)
 	f->ranges = map + U32(map+20) + 4;
 	f->gmap = map + U32(map+24);
 	f->glyphs = map + U32(map+28);
+	f->nglyphs = (len - (f->glyphs - map)) / f->S;
 	f->ctab = f->ranges + 8*(f->nranges = U32(f->ranges - 4));
 	return 0;
 }
diff --git a/ucf.h b/ucf.h
index da238cd..1429cd3 100644
--- a/ucf.h
+++ b/ucf.h
@@ -6,7 +6,7 @@ struct ucf
 {
 	int w, h, s, S;
 	const unsigned char *ranges, *ctab, *gmap, *glyphs;
-	unsigned nranges;
+	unsigned nranges, nglyphs;
 };
 
 int ucf_init(struct ucf *, const unsigned char *, size_t);