Added error for ambiguous oid prefixes. Added methods to compare the first nth hexadecimal characters (i.e. packets of 4 bits) of OIDs.

1 files changed, 10 insertions, 0 deletions

diff --git a/include/git2/oid.h b/include/git2/oid.h
index 4538c6147..e8803ced8 100644
--- a/include/git2/oid.h
+++ b/include/git2/oid.h
@@ -133,6 +133,16 @@ GIT_EXTERN(void) git_oid_cpy(git_oid *out, const git_oid *src);
 GIT_EXTERN(int) git_oid_cmp(const git_oid *a, const git_oid *b);
 
 /**
+ * Compare the first 'len' hexadecimal characters (packets of 4 bits)
+ * of two oid structures.
+ * @param len the number of hex chars to compare
+ * @param a first oid structure.
+ * @param b second oid structure.
+ * @return 1 in case of a match
+ */
+GIT_EXTERN(int) gid_oid_match(unsigned int len, git_oid *a, git_oid *b);
+
+/**
  * OID Shortener object
  */
 typedef struct git_oid_shorten git_oid_shorten;