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[PATCH v2 18/25] should_pack_ref(): new function, extracted from `files_pack_refs()`

From
Michael Haggerty <mhagger@alum.mit.edu>
Date
May 22, 2017, 14:17 UTC
Message-ID
<b7786f0cc9664fe86580f4296b4916f450b068d0.1495460199.git.mhagger@alum.mit.edu>
In-Reply-To
<cover.1495460199.git.mhagger@alum.mit.edu>

Extract a function for deciding whether a reference should be packed. It is a self-contained bit of logic, so splitting it out improves readability.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs/files-backend.c | 42 ++++++++++++++++++++++++++++--------------
 1 file changed, 28 insertions(+), 14 deletions(-)
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 8d0ce739a6..29514392b0 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1455,6 +1455,32 @@ static void prune_refs(struct files_ref_store *refs, struct ref_to_prune *r)
 	}
 }
 
+/*
+ * Return true if the specified reference should be packed.
+ */
+static int should_pack_ref(const char *refname,
+			   const struct object_id *oid, unsigned int ref_flags,
+			   unsigned int pack_flags)
+{
+	/* Do not pack per-worktree refs: */
+	if (ref_type(refname) != REF_TYPE_NORMAL)
+		return 0;
+
+	/* Do not pack non-tags unless PACK_REFS_ALL is set: */
+	if (!(pack_flags & PACK_REFS_ALL) && !starts_with(refname, "refs/tags/"))
+		return 0;
+
+	/* Do not pack symbolic refs: */
+	if (ref_flags & REF_ISSYMREF)
+		return 0;
+
+	/* Do not pack broken refs: */
+	if (!ref_resolves_to_object(refname, oid, ref_flags))
+		return 0;
+
+	return 1;
+}
+
 static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
 {
 	struct files_ref_store *refs =
@@ -1476,21 +1502,9 @@ static int files_pack_refs(struct ref_store *ref_store, unsigned int flags)
 		 * pruned, also add it to refs_to_prune.
 		 */
 		struct ref_entry *packed_entry;
-		int is_tag_ref = starts_with(iter->refname, "refs/tags/");
-
-		/* Do not pack per-worktree refs: */
-		if (ref_type(iter->refname) != REF_TYPE_NORMAL)
-			continue;
-
-		/* ALWAYS pack tags */
-		if (!(flags & PACK_REFS_ALL) && !is_tag_ref)
-			continue;
-
-		/* Do not pack symbolic or broken refs: */
-		if (iter->flags & REF_ISSYMREF)
-			continue;
 
-		if (!ref_resolves_to_object(iter->refname, iter->oid, iter->flags))
+		if (!should_pack_ref(iter->refname, iter->oid, iter->flags,
+				     flags))
 			continue;
 
 		/*
-- 
2.11.0
Previous: Michael HaggertyNext: Stefan Beller
Message 29 of 31 in “Prepare to separate out a packed_ref_store”
  1. 00/25 Prepare to separate out a packed_ref_storeMichael Haggerty, May 22, 2017
  2. 01/25 t3600: clean up permissions test properlyMichael Haggerty, May 22, 2017
  3. 02/25 refs.h: clarify docstring for the ref_transaction_update()-related fnsMichael Haggerty, May 22, 2017
  4. 03/25 ref_iterator_begin_fn(): fix docstringMichael Haggerty, May 22, 2017
  5. 04/25 files-backend: use `die("BUG: ...")`, not `die("internal error: ...")`Michael Haggerty, May 22, 2017
  6. 05/25 prefix_ref_iterator: don't trim too muchMichael Haggerty, May 22, 2017
  7. 06/25 refs_ref_iterator_begin(): don't check prefixes redundantlyMichael Haggerty, May 22, 2017
  8. 07/25 refs: use `size_t` indexes when iterating over ref transaction updatesMichael Haggerty, May 22, 2017
  9. 08/25 ref_store: take a `msg` parameter when deleting referencesMichael Haggerty, May 22, 2017
  10. 10/25 files-backend: move `lock` member to `files_ref_store`Michael Haggerty, May 22, 2017
  11. 12/25 files_transaction_cleanup(): new helper functionMichael Haggerty, May 22, 2017
  12. 11/25 files_ref_store: put the packed files lock directly in this structMichael Haggerty, May 22, 2017
  13. 09/25 lockfile: add a new method, is_lock_file_locked()Michael Haggerty, May 22, 2017
  14. 14/25 ref_transaction_prepare(): new optional step for reference updatesMichael Haggerty, May 22, 2017
  15. 16/25 ref_update_reject_duplicates(): use `size_t` rather than `int`Michael Haggerty, May 22, 2017
  16. 15/25 ref_update_reject_duplicates(): expose function to whole refs moduleMichael Haggerty, May 22, 2017
  17. 17/25 ref_update_reject_duplicates(): add a sanity checkMichael Haggerty, May 22, 2017
  18. 19/25 get_packed_ref_cache(): assume "packed-refs" won't change while lockedMichael Haggerty, May 22, 2017
  19. 20/25 read_packed_refs(): do more of the work of reading packed refsMichael Haggerty, May 22, 2017
  20. 22/25 refs_ref_iterator_begin(): handle `GIT_REF_PARANOIA`Michael Haggerty, May 22, 2017
  21. 23/25 create_ref_entry(): remove `check_name` optionMichael Haggerty, May 22, 2017
  22. 24/25 ref-filter: limit traversal to prefixMichael Haggerty, May 22, 2017
  23. 25/25 cache_ref_iterator_begin(): avoid priming unneeded directoriesMichael Haggerty, May 22, 2017
  24. Jeff KingMay 23, 2017
  25. Michael HaggertyMay 24, 2017
  26. Junio C HamanoMay 24, 2017
  27. 21/25 read_packed_refs(): report unexpected fopen() failuresMichael Haggerty, May 22, 2017
  28. 13/25 ref_transaction_commit(): check for valid `transaction->state`Michael Haggerty, May 22, 2017
  29. 18/25 should_pack_ref(): new function, extracted from `files_pack_refs()`Michael Haggerty, May 22, 2017
  30. Stefan BellerMay 22, 2017
  31. Junio C HamanoMay 24, 2017

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