Wrap git_revparse_single

c_src/geef.c

@@ -11,6 +11,7 @@
 #include "revwalk.h"
 #include "index.h"
 #include "signature.h"
+#include "revparse.h"
 #include "geef.h"
 #include <stdio.h>
 #include <string.h>
@@ -186,6 +187,7 @@ static ErlNifFunc geef_funcs[] =
 	{"index_read_tree",  2, geef_index_read_tree},
 	{"signature_new", 2, geef_signature_new},
 	{"signature_new", 3, geef_signature_new},
+	{"revparse_single", 2, geef_revparse_single},
 };
 
 ERL_NIF_INIT(geef_nif, geef_funcs, load, NULL, upgrade, unload)

c_src/object.c

@@ -71,7 +71,6 @@ geef_object_lookup(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
 		return geef_error(env);
 	}
 
-
 	term_obj = enif_make_resource(env, obj);
 	enif_release_resource(obj);
 

c_src/revparse.c

@@ -0,0 +1,48 @@
+#include <git2.h>
+#include "geef.h"
+#include "repository.h"
+#include "oid.h"
+#include "object.h"
+#include "revparse.h"
+
+ERL_NIF_TERM
+geef_revparse_single(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
+{
+	ErlNifBinary bin, id;
+	geef_repository *repo;
+	geef_object *obj;
+	ERL_NIF_TERM type, term_obj;
+
+	if (!enif_get_resource(env, argv[0], geef_repository_type, (void **) &repo))
+		return enif_make_badarg(env);
+
+	if (!enif_inspect_iolist_as_binary(env, argv[1], &bin))
+		return enif_make_badarg(env);
+
+	if (geef_terminate_binary(&bin) < 0)
+		return geef_oom(env);
+
+	obj = enif_alloc_resource(geef_object_type, sizeof(geef_object));
+	if (!obj)
+		return geef_oom(env);
+
+	if (git_revparse_single(&obj->obj, repo->repo, (char *) bin.data) < 0) {
+		enif_release_binary(&bin);
+		enif_release_resource(obj);
+		return geef_error(env);
+	}
+
+	type = geef_object_type2atom(git_object_type(obj->obj));
+
+	if (geef_oid_bin(&id, git_object_id(obj->obj)) < 0)
+		return geef_oom(env);
+
+
+	term_obj = enif_make_resource(env, obj);
+	enif_release_resource(obj);
+
+	obj->repo = repo;
+	enif_keep_resource(repo);
+
+	return enif_make_tuple4(env, atoms.ok, term_obj, type, enif_make_binary(env, &id));
+}

c_src/revparse.h

@@ -0,0 +1,8 @@
+#ifndef GEEF_REVPARSE_H
+#define GEEF_REVPARSE_H
+
+#include "erl_nif.h"
+
+ERL_NIF_TERM geef_revparse_single(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]);
+
+#endif