[PATCH 1/6] Introduce a get_oid function.

["brian m. carlson" <sandals@crustytoothpaste.net>]

The get_oid function is equivalent to the get_sha1 function, but uses a
struct object_id instead.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 cache.h     | 2 ++
 sha1_name.c | 9 +++++++++
 2 files changed, 11 insertions(+)

diff --git a/cache.h b/cache.h
index 2711048c..22b73646 100644
--- a/cache.h
+++ b/cache.h
@@ -1156,6 +1156,8 @@ extern int get_sha1_blob(const char *str, unsigned char *sha1);
 extern void maybe_die_on_misspelt_object_name(const char *name, const char *prefix);
 extern int get_sha1_with_context(const char *str, unsigned flags, unsigned char *sha1, struct object_context *orc);
 
+extern int get_oid(const char *str, struct object_id *oid);
+
 typedef int each_abbrev_fn(const unsigned char *sha1, void *);
 extern int for_each_abbrev(const char *prefix, each_abbrev_fn, void *);
 
diff --git a/sha1_name.c b/sha1_name.c
index 776101e8..ca7ddd6f 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -1215,6 +1215,15 @@ int get_sha1(const char *name, unsigned char *sha1)
 }
 
 /*
+ * This is like "get_sha1()", but for struct object_id.
+ */
+int get_oid(const char *name, struct object_id *oid)
+{
+	return get_sha1(name, oid->hash);
+}
+
+
+/*
  * Many callers know that the user meant to name a commit-ish by
  * syntactical positions where the object name appears.  Calling this
  * function allows the machinery to disambiguate shorter-than-unique
-- 
2.8.0.rc3.226.g39d4020