Merge branch 'revparse'

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>
@@ -185,6 +186,7 @@ static ErlNifFunc geef_funcs[] =
 	{"index_clear",      1, geef_index_clear},
 	{"index_read_tree",  2, geef_index_read_tree},
 	{"signature_default", 1, geef_signature_default},
+	{"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

lib/geef/object.ex

@@ -7,15 +7,11 @@ defrecord Geef.Object, Record.extract(:geef_object, from: "src/geef_records.hrl"
     end
   end
 
-  def from_erl(obj) do
-    do_from_erl(obj, elem(obj, 0))
-  end
-
-  defp do_from_erl(obj, :geef_tree) do
+  def from_erl(obj) when elem(obj, 1) == :tree do
     set_elem(obj, 0, Geef.Tree)
   end
 
-  defp do_from_erl(obj, _) do
+  def rom_erl(obj) do
     set_elem(obj, 0, Geef.Object)
   end
 

lib/geef/revparse.ex

@@ -0,0 +1,17 @@
+defmodule Geef.Revparse do
+  import Geef
+  use Geef
+
+  @spec single(pid, iolist) :: {:ok, Object.t} | {:error, term}
+  def single(repo, str) do
+    case :geef_revparse.single(repo, str) do
+      {:ok, obj} ->
+        {:ok, Object.from_erl(obj)}
+      error -> error
+    end
+  end
+
+  @spec single!(pid, iolist) :: {:ok, Object.t}
+  def single!(repo, str), do: single(repo, str) |> assert_ok
+
+end

src/geef_nif.erl

@@ -182,6 +182,10 @@ signature_new(_Name, _Email) ->
 signature_new(_Name, _Email, _Time) ->
     ?NIF_FN.
 
+-spec revparse_single(term(), iolist()) -> {ok, term(), atom(), geef_oid:oid()} | {error, term()}.
+revparse_single(_Handle, _Str) ->
+    ?NIF_FN.
+
 nif_error(Line) ->
     erlang:nif_error({nif_not_loaded,module,?MODULE,line,Line}).
 

src/geef_revparse.erl

@@ -0,0 +1,15 @@
+-module(geef_revparse).
+
+-include("geef_records.hrl").
+
+-export([single/2]).
+
+-spec single(pid(), iolist()) -> {ok, geef_obj:object()} | {error, term()}.
+single(Repo, Str) ->
+    RepoHandle = geef_repo:handle(Repo),
+    case geef_nif:revparse_single(RepoHandle, Str) of
+	{ok, ObjHandle, Type, Id} ->
+	    {ok, #geef_object{type=Type, id=Id, handle=ObjHandle}};
+	Error = {error, _} ->
+	    Error
+    end.

test/repo_test.erl

@@ -6,7 +6,7 @@
 repo_test_() ->
     {foreach, fun start/0, fun stop/1, [fun bare_test/1, fun odb_write_test/1,
 					fun ref_test/1, fun index_add_test/1,
-					fun ref_iter_test/1]}.
+					fun ref_iter_test/1, fun revparse_test/1]}.
 
 start() ->
     {A, B, C} = now(),
@@ -25,6 +25,12 @@ odb_write_test(Repo) ->
     Expected = geef_oid:parse("c300118399f01fe52b316061b5d32beb27e0adfd"),
     [?_assertEqual(Actual, Expected)].
 
+revparse_test(Repo) ->
+    odb_write_test(Repo),
+    {ok, Obj} = geef_revparse:single(Repo, "c300118399"),
+    [?_assertEqual(Obj#geef_object.type, blob),
+     ?_assertEqual(Obj#geef_object.id, geef_oid:parse("c300118399f01fe52b316061b5d32beb27e0adfd"))].
+
 index_add_test(Repo) ->
     Data = <<"This is some text that will go in a file">>,
     {ok, Odb} = geef_repo:odb(Repo),