Introduce git_reference_shorthand

Generate a shorthand name out of the full refname.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/refs.c b/src/refs.c
index 8bba3941e..5ed2883d9 100644
--- a/src/refs.c
+++ b/src/refs.c
@@ -1016,3 +1016,20 @@ int git_reference_is_valid_name(
 		refname,
 		GIT_REF_FORMAT_ALLOW_ONELEVEL);
 }
+
+const char *git_reference_shorthand(git_reference *ref)
+{
+	const char *name = ref->name;
+
+	if (!git__prefixcmp(name, GIT_REFS_HEADS_DIR))
+		return name + strlen(GIT_REFS_HEADS_DIR);
+	else if (!git__prefixcmp(name, GIT_REFS_TAGS_DIR))
+		return name + strlen(GIT_REFS_TAGS_DIR);
+	else if (!git__prefixcmp(name, GIT_REFS_REMOTES_DIR))
+		return name + strlen(GIT_REFS_REMOTES_DIR);
+	else if (!git__prefixcmp(name, GIT_REFS_DIR))
+		return name + strlen(GIT_REFS_DIR);
+
+	/* No shorthands are avaiable, so just return the name */
+	return name;
+}