From 83869e15fa9ef3b0ea2adbfe2fe68a309f95b856 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Fri, 20 Mar 2026 08:07:40 +0100 Subject: odb: introduce generic `odb_find_abbrev_len()` Introduce a new generic `odb_find_abbrev_len()` function as well as source-specific callback functions. This makes the logic to compute the required prefix length to make a given object unique fully pluggable. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- odb.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'odb.h') diff --git a/odb.h b/odb.h index e80fd8f7ab..984bafca9d 100644 --- a/odb.h +++ b/odb.h @@ -545,6 +545,22 @@ int odb_count_objects(struct object_database *odb, enum odb_count_objects_flags flags, unsigned long *out); +/* + * Given an object ID, find the minimum required length required to make the + * object ID unique across the whole object database. + * + * The `min_len` determines the minimum abbreviated length that'll be returned + * by this function. If `min_len < 0`, then the function will set a sensible + * default minimum abbreviation length. + * + * Returns 0 on success, a negative error code otherwise. The computed length + * will be assigned to `*out`. + */ +int odb_find_abbrev_len(struct object_database *odb, + const struct object_id *oid, + int min_len, + unsigned *out); + enum { /* * By default, `odb_write_object()` does not actually write anything -- cgit v1.3-5-g9baa