Add a way to get a blob's size and content

c_src/blob.c

@@ -0,0 +1,47 @@
+#include <git2.h>
+#include <string.h>
+
+#include "geef.h"
+#include "object.h"
+#include "blob.h"
+
+ERL_NIF_TERM
+geef_blob_size(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{
+	geef_object *obj;
+	const git_blob *blob;
+
+	if (!enif_get_resource(env, argv[0], geef_object_type, (void **) &obj))
+		return enif_make_badarg(env);
+
+	blob = (git_blob *)obj->obj;
+
+	return enif_make_uint64(env, git_blob_rawsize(blob)); 
+}
+
+ERL_NIF_TERM
+geef_blob_content(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{
+	geef_object *obj;
+	const git_blob *blob;
+	ErlNifBinary bin;
+	size_t len;
+	const void *content;
+
+	if (!enif_get_resource(env, argv[0], geef_object_type, (void **) &obj))
+		return enif_make_badarg(env);
+
+	blob = (git_blob *)obj->obj;
+
+	len = git_blob_rawsize(blob);
+	content = git_blob_rawcontent(blob);
+	if (!content)
+		return atoms.error;
+
+	if (!enif_alloc_binary(len, &bin))
+		return atoms.error;
+
+	memcpy(bin.data, content, len);
+
+	return enif_make_tuple2(env, atoms.ok, enif_make_binary(env, &bin));
+}