1 files changed, 24 insertions, 0 deletions
diff --git a/blob.c b/blob.c
new file mode 100644
index 0000000000..35031af62b
--- /dev/null
+++ b/blob.c
@@ -0,0 +1,24 @@
+#include "blob.h"
+#include "cache.h"
+#include <stdlib.h>
+
+const char *blob_type = "blob";
+
+struct blob *lookup_blob(unsigned char *sha1)
+{
+	struct object *obj = lookup_object(sha1);
+	if (!obj) {
+		struct blob *ret = malloc(sizeof(struct blob));
+		memset(ret, 0, sizeof(struct blob));
+		created_object(sha1, &ret->object);
+		ret->object.type = blob_type;
+		ret->object.parsed = 1;
+		return ret;
+	}
+	if (obj->parsed && obj->type != blob_type) {
+		error("Object %s is a %s, not a blob", 
+		      sha1_to_hex(sha1), obj->type);
+		return NULL;
+	}
+	return (struct blob *) obj;
+}