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reference: add id() to get the sha

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This commit is contained in:
Carlos Martín Nieto
2013-01-21 15:23:21 +01:00
parent 9e8052c6b0
commit 880d7b76fb
5 changed files with 39 additions and 4 deletions
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30
c_src/reference.c
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@@ -160,6 +160,33 @@ geef_reference_glob(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
return data.list;
}
static int bin_from_oid(ErlNifBinary *bin, const git_oid *id)
{
if (!enif_alloc_binary(GIT_OID_RAWSZ, bin))
return -1;
memcpy(bin->data, id, GIT_OID_RAWSZ);
return 0;
}
ERL_NIF_TERM
geef_reference_id(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
{
geef_ref *ref;
ErlNifBinary bin;
const git_oid *id;
if (!enif_get_resource(env, argv[0], geef_ref_type, (void **) &ref))
return enif_make_badarg(env);
id = git_reference_target(ref->ref);
if (bin_from_oid(&bin, id) < 0)
return atoms.error;
return enif_make_binary(env, &bin);
}
ERL_NIF_TERM
geef_reference_to_id(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
{
@@ -186,9 +213,8 @@ geef_reference_to_id(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[])
return geef_error(env);
}
if (!enif_alloc_binary(GIT_OID_RAWSZ, &bin))
if (bin_from_oid(&bin, &id) < 0)
return atoms.error;
memcpy(bin.data, &id, GIT_OID_RAWSZ);
return enif_make_binary(env, &bin);
}