revwalk: add convenience function to push/hide HEAD

It's not unusual to want the walker to act on HEAD, so add a
convencience function for the case that the user doesn't already have
a resolved HEAD reference.

1 files changed, 16 insertions, 0 deletions

diff --git a/include/git2/revwalk.h b/include/git2/revwalk.h
index 020c898ca..e7ec2abf3 100644
--- a/include/git2/revwalk.h
+++ b/include/git2/revwalk.h
@@ -117,6 +117,14 @@ GIT_EXTERN(int) git_revwalk_push(git_revwalk *walk, const git_oid *oid);
 GIT_EXTERN(int) git_revwalk_push_glob(git_revwalk *walk, const char *glob);
 
 /**
+ * Push the repository's HEAD
+ *
+ * @param walk the walker being used for the traversal
+ * @return GIT_SUCCESS or an error code
+ */
+GIT_EXTERN(int) git_revwalk_push_head(git_revwalk *walk);
+
+/**
  * Mark a commit (and its ancestors) uninteresting for the output.
  *
  * The given OID must belong to a commit on the walked
@@ -148,6 +156,14 @@ GIT_EXTERN(int) git_revwalk_hide(git_revwalk *walk, const git_oid *oid);
 GIT_EXTERN(int) git_revwalk_hide_glob(git_revwalk *walk, const char *glob);
 
 /**
+ * Hide the repository's HEAD
+ *
+ * @param walk the walker being used for the traversal
+ * @return GIT_SUCCESS or an error code
+ */
+GIT_EXTERN(int) git_revwalk_hide_head(git_revwalk *walk);
+
+/**
  * Get the next commit from the revision walk.
  *
  * The initial call to this method is *not* blocking when