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From: Taylor Blau <me@ttaylorr.com>
To: git@vger.kernel.org
Cc: Chris Torek <chris.torek@gmail.com>,
	Derrick Stolee <derrickstolee@github.com>,
	Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>,
	Patrick Steinhardt <ps@pks.im>
Subject: [PATCH v5 13/16] refs.h: implement `hidden_refs_to_excludes()`
Date: Mon, 10 Jul 2023 17:12:39 -0400	[thread overview]
Message-ID: <f99d89d53b9640db656109de06dd5e084754cc0e.1689023520.git.me@ttaylorr.com> (raw)
In-Reply-To: <cover.1689023520.git.me@ttaylorr.com>

In subsequent commits, we'll teach `receive-pack` and `upload-pack` to
use the new jump list feature in the packed-refs iterator by ignoring
references which are mentioned via its respective hideRefs lists.

However, the packed-ref jump lists cannot handle un-hiding rules (that
begin with '!'), or namespace comparisons (that begin with '^'). Add a
convenience function to the refs.h API to detect when either of these
conditions are met, and returns an appropriate value to pass as excluded
patterns.

Suggested-by: Jeff King <peff@peff.net>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 refs.c | 24 ++++++++++++++++++++++++
 refs.h |  6 ++++++
 2 files changed, 30 insertions(+)

diff --git a/refs.c b/refs.c
index 3065e514fd0..0916a6ba582 100644
--- a/refs.c
+++ b/refs.c
@@ -1482,6 +1482,30 @@ int ref_is_hidden(const char *refname, const char *refname_full,
 	return 0;
 }
 
+const char **hidden_refs_to_excludes(const struct strvec *hide_refs)
+{
+	const char **pattern;
+	for (pattern = hide_refs->v; *pattern; pattern++) {
+		/*
+		 * We can't feed any excludes from hidden refs config
+		 * sections, since later rules may override previous
+		 * ones. For example, with rules "refs/foo" and
+		 * "!refs/foo/bar", we should show "refs/foo/bar" (and
+		 * everything underneath it), but the earlier exclusion
+		 * would cause us to skip all of "refs/foo".  We
+		 * likewise don't implement the namespace stripping
+		 * required for '^' rules.
+		 *
+		 * Both are possible to do, but complicated, so avoid
+		 * populating the jump list at all if we see either of
+		 * these patterns.
+		 */
+		if (**pattern == '!' || **pattern == '^')
+			return NULL;
+	}
+	return hide_refs->v;
+}
+
 const char *find_descendant_ref(const char *dirname,
 				const struct string_list *extras,
 				const struct string_list *skip)
diff --git a/refs.h b/refs.h
index 7871faed632..23211a5ea1c 100644
--- a/refs.h
+++ b/refs.h
@@ -837,6 +837,12 @@ int parse_hide_refs_config(const char *var, const char *value, const char *,
  */
 int ref_is_hidden(const char *, const char *, const struct strvec *);
 
+/*
+ * Returns an array of patterns to use as excluded_patterns, if none of the
+ * hidden references use the token '!' or '^'.
+ */
+const char **hidden_refs_to_excludes(const struct strvec *hide_refs);
+
 /* Is this a per-worktree ref living in the refs/ namespace? */
 int is_per_worktree_ref(const char *refname);
 
-- 
2.41.0.343.gdff068c469f


  parent reply	other threads:[~2023-07-10 21:13 UTC|newest]

Thread overview: 149+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-08 21:59 [PATCH 00/15] refs: implement skip lists for packed backend Taylor Blau
2023-05-08 21:59 ` [PATCH 01/15] refs.c: rename `ref_filter` Taylor Blau
2023-05-08 21:59 ` [PATCH 02/15] ref-filter.h: provide `REF_FILTER_INIT` Taylor Blau
2023-05-08 21:59 ` [PATCH 03/15] ref-filter: clear reachable list pointers after freeing Taylor Blau
2023-05-08 21:59 ` [PATCH 04/15] ref-filter: add ref_filter_clear() Taylor Blau
2023-05-08 22:29   ` Junio C Hamano
2023-05-08 22:33     ` Taylor Blau
2023-05-09 15:14   ` Patrick Steinhardt
2023-05-09 19:11     ` Taylor Blau
2023-05-08 21:59 ` [PATCH 05/15] ref-filter.c: parameterize match functions over patterns Taylor Blau
2023-05-08 22:36   ` Junio C Hamano
2023-05-09 20:13     ` Taylor Blau
2023-05-08 21:59 ` [PATCH 06/15] builtin/for-each-ref.c: add `--exclude` option Taylor Blau
2023-05-08 23:22   ` Junio C Hamano
2023-05-09 20:22     ` Taylor Blau
2023-05-08 22:00 ` [PATCH 07/15] refs: plumb `exclude_patterns` argument throughout Taylor Blau
2023-05-09 15:14   ` Patrick Steinhardt
2023-05-09 20:23     ` Taylor Blau
2023-05-08 22:00 ` [PATCH 08/15] refs/packed-backend.c: refactor `find_reference_location()` Taylor Blau
2023-05-08 23:56   ` Junio C Hamano
2023-05-09 20:29     ` Taylor Blau
2023-05-08 22:00 ` [PATCH 09/15] refs/packed-backend.c: implement skip lists to avoid excluded pattern(s) Taylor Blau
2023-05-09  0:10   ` Chris Torek
2023-05-09 20:39     ` Taylor Blau
2023-05-09 15:15   ` Patrick Steinhardt
2023-05-09 20:55     ` Taylor Blau
2023-05-09 21:15       ` Taylor Blau
2023-05-10  7:25       ` Patrick Steinhardt
2023-05-09 23:40   ` Junio C Hamano
2023-05-10  2:30     ` Taylor Blau
2023-05-08 22:00 ` [PATCH 10/15] refs/packed-backend.c: add trace2 counters for skip list Taylor Blau
2023-05-08 22:00 ` [PATCH 11/15] revision.h: store hidden refs in a `strvec` Taylor Blau
2023-05-08 22:00 ` [PATCH 12/15] refs/packed-backend.c: ignore complicated hidden refs rules Taylor Blau
2023-05-08 22:00 ` [PATCH 13/15] refs.h: let `for_each_namespaced_ref()` take excluded patterns Taylor Blau
2023-05-08 22:00 ` [PATCH 14/15] upload-pack.c: avoid enumerating hidden refs where possible Taylor Blau
2023-05-09 15:15   ` Patrick Steinhardt
2023-05-09 21:34     ` Taylor Blau
2023-05-08 22:00 ` [PATCH 15/15] builtin/receive-pack.c: avoid enumerating hidden references Taylor Blau
2023-05-15 19:23 ` [PATCH v2 00/16] refs: implement jump lists for packed backend Taylor Blau
2023-05-15 19:23   ` [PATCH v2 01/16] refs.c: rename `ref_filter` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 02/16] ref-filter.h: provide `REF_FILTER_INIT` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 03/16] ref-filter: clear reachable list pointers after freeing Taylor Blau
2023-05-15 19:23   ` [PATCH v2 04/16] ref-filter: add `ref_filter_clear()` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 05/16] ref-filter.c: parameterize match functions over patterns Taylor Blau
2023-05-15 19:23   ` [PATCH v2 06/16] builtin/for-each-ref.c: add `--exclude` option Taylor Blau
2023-05-15 19:23   ` [PATCH v2 07/16] refs: plumb `exclude_patterns` argument throughout Taylor Blau
2023-05-15 19:23   ` [PATCH v2 08/16] refs/packed-backend.c: refactor `find_reference_location()` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 09/16] refs/packed-backend.c: implement jump lists to avoid excluded pattern(s) Taylor Blau
2023-06-06  7:00     ` Patrick Steinhardt
2023-06-20 12:15       ` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 10/16] refs/packed-backend.c: add trace2 counters for jump list Taylor Blau
2023-05-15 19:23   ` [PATCH v2 11/16] revision.h: store hidden refs in a `strvec` Taylor Blau
2023-06-06  7:00     ` Patrick Steinhardt
2023-06-20 12:16       ` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 12/16] refs/packed-backend.c: ignore complicated hidden refs rules Taylor Blau
2023-05-15 19:23   ` [PATCH v2 13/16] refs.h: let `for_each_namespaced_ref()` take excluded patterns Taylor Blau
2023-06-06  7:01     ` Patrick Steinhardt
2023-06-20 12:18       ` Taylor Blau
2023-05-15 19:23   ` [PATCH v2 14/16] builtin/receive-pack.c: avoid enumerating hidden references Taylor Blau
2023-05-15 19:23   ` [PATCH v2 15/16] upload-pack.c: avoid enumerating hidden refs where possible Taylor Blau
2023-05-15 19:23   ` [PATCH v2 16/16] ls-refs.c: " Taylor Blau
2023-06-06  7:01   ` [PATCH v2 00/16] refs: implement jump lists for packed backend Patrick Steinhardt
2023-06-20 12:22     ` Taylor Blau
2023-06-07 10:40 ` [PATCH v3 " Taylor Blau
2023-06-07 10:40   ` [PATCH v3 01/16] refs.c: rename `ref_filter` Taylor Blau
2023-06-13 22:19     ` Junio C Hamano
2023-06-07 10:40   ` [PATCH v3 02/16] ref-filter.h: provide `REF_FILTER_INIT` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 03/16] ref-filter: clear reachable list pointers after freeing Taylor Blau
2023-06-07 10:41   ` [PATCH v3 04/16] ref-filter: add `ref_filter_clear()` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 05/16] ref-filter.c: parameterize match functions over patterns Taylor Blau
2023-06-13 22:37     ` Junio C Hamano
2023-06-07 10:41   ` [PATCH v3 06/16] builtin/for-each-ref.c: add `--exclude` option Taylor Blau
2023-06-07 10:41   ` [PATCH v3 07/16] refs: plumb `exclude_patterns` argument throughout Taylor Blau
2023-06-13 23:42     ` Junio C Hamano
2023-06-20 11:52       ` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 08/16] refs/packed-backend.c: refactor `find_reference_location()` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 09/16] refs/packed-backend.c: implement jump lists to avoid excluded pattern(s) Taylor Blau
2023-06-14  0:27     ` Junio C Hamano
2023-06-20 12:05       ` Taylor Blau
2023-06-20 18:49         ` Junio C Hamano
2023-06-07 10:41   ` [PATCH v3 10/16] refs/packed-backend.c: add trace2 counters for jump list Taylor Blau
2023-06-14  0:32     ` Junio C Hamano
2023-06-20 12:08       ` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 11/16] revision.h: store hidden refs in a `strvec` Taylor Blau
2023-06-07 10:41   ` [PATCH v3 12/16] refs/packed-backend.c: ignore complicated hidden refs rules Taylor Blau
2023-06-14  0:40     ` Junio C Hamano
2023-06-07 10:41   ` [PATCH v3 13/16] refs.h: let `for_each_namespaced_ref()` take excluded patterns Taylor Blau
2023-06-07 10:42   ` [PATCH v3 14/16] builtin/receive-pack.c: avoid enumerating hidden references Taylor Blau
2023-06-07 10:42   ` [PATCH v3 15/16] upload-pack.c: avoid enumerating hidden refs where possible Taylor Blau
2023-06-07 10:42   ` [PATCH v3 16/16] ls-refs.c: " Taylor Blau
2023-06-12 21:05   ` [PATCH v3 00/16] refs: implement jump lists for packed backend Junio C Hamano
2023-06-20 14:20 ` [PATCH v4 " Taylor Blau
2023-06-20 14:21   ` [PATCH v4 01/16] refs.c: rename `ref_filter` Taylor Blau
2023-07-03  5:13     ` Jeff King
2023-06-20 14:21   ` [PATCH v4 02/16] ref-filter.h: provide `REF_FILTER_INIT` Taylor Blau
2023-07-03  5:15     ` Jeff King
2023-07-03 17:07       ` Taylor Blau
2023-06-20 14:21   ` [PATCH v4 03/16] ref-filter: clear reachable list pointers after freeing Taylor Blau
2023-07-03  5:16     ` Jeff King
2023-06-20 14:21   ` [PATCH v4 04/16] ref-filter: add `ref_filter_clear()` Taylor Blau
2023-07-03  5:19     ` Jeff King
2023-07-03 17:13       ` Taylor Blau
2023-07-03 17:32         ` Jeff King
2023-06-20 14:21   ` [PATCH v4 05/16] ref-filter.c: parameterize match functions over patterns Taylor Blau
2023-07-03  5:27     ` Jeff King
2023-07-03 17:18       ` Taylor Blau
2023-07-03 17:22         ` Taylor Blau
2023-07-03 17:33           ` Jeff King
2023-06-20 14:21   ` [PATCH v4 06/16] builtin/for-each-ref.c: add `--exclude` option Taylor Blau
2023-06-20 14:21   ` [PATCH v4 07/16] refs: plumb `exclude_patterns` argument throughout Taylor Blau
2023-06-20 14:21   ` [PATCH v4 08/16] refs/packed-backend.c: refactor `find_reference_location()` Taylor Blau
2023-06-20 14:21   ` [PATCH v4 09/16] refs/packed-backend.c: implement jump lists to avoid excluded pattern(s) Taylor Blau
2023-07-03  5:56     ` Jeff King
2023-07-03 17:38       ` Taylor Blau
2023-06-20 14:21   ` [PATCH v4 10/16] refs/packed-backend.c: add trace2 counters for jump list Taylor Blau
2023-06-20 14:21   ` [PATCH v4 11/16] revision.h: store hidden refs in a `strvec` Taylor Blau
2023-07-03  5:59     ` Jeff King
2023-06-20 14:22   ` [PATCH v4 12/16] refs/packed-backend.c: ignore complicated hidden refs rules Taylor Blau
2023-07-03  6:18     ` Jeff King
2023-07-04 18:22       ` Taylor Blau
2023-06-20 14:22   ` [PATCH v4 13/16] refs.h: let `for_each_namespaced_ref()` take excluded patterns Taylor Blau
2023-06-20 14:22   ` [PATCH v4 14/16] builtin/receive-pack.c: avoid enumerating hidden references Taylor Blau
2023-06-20 14:22   ` [PATCH v4 15/16] upload-pack.c: avoid enumerating hidden refs where possible Taylor Blau
2023-07-03  6:26     ` Jeff King
2023-07-04 18:43       ` Taylor Blau
2023-06-20 14:22   ` [PATCH v4 16/16] ls-refs.c: " Taylor Blau
2023-07-03  6:27     ` Jeff King
2023-07-03  6:29   ` [PATCH v4 00/16] refs: implement jump lists for packed backend Jeff King
2023-07-10 21:12 ` [PATCH v5 " Taylor Blau
2023-07-10 21:12   ` [PATCH v5 01/16] refs.c: rename `ref_filter` Taylor Blau
2023-07-10 21:12   ` [PATCH v5 02/16] ref-filter.h: provide `REF_FILTER_INIT` Taylor Blau
2023-07-10 21:12   ` [PATCH v5 03/16] ref-filter: clear reachable list pointers after freeing Taylor Blau
2023-07-10 21:12   ` [PATCH v5 04/16] ref-filter: add `ref_filter_clear()` Taylor Blau
2023-07-10 21:12   ` [PATCH v5 05/16] ref-filter.c: parameterize match functions over patterns Taylor Blau
2023-07-10 21:12   ` [PATCH v5 06/16] builtin/for-each-ref.c: add `--exclude` option Taylor Blau
2023-07-10 21:12   ` [PATCH v5 07/16] refs: plumb `exclude_patterns` argument throughout Taylor Blau
2023-07-10 21:12   ` [PATCH v5 08/16] refs/packed-backend.c: refactor `find_reference_location()` Taylor Blau
2023-07-10 21:12   ` [PATCH v5 09/16] refs/packed-backend.c: implement jump lists to avoid excluded pattern(s) Taylor Blau
2023-07-10 21:12   ` [PATCH v5 10/16] refs/packed-backend.c: add trace2 counters for jump list Taylor Blau
2023-07-10 21:12   ` [PATCH v5 11/16] revision.h: store hidden refs in a `strvec` Taylor Blau
2023-07-10 21:12   ` [PATCH v5 12/16] refs.h: let `for_each_namespaced_ref()` take excluded patterns Taylor Blau
2023-07-10 21:12   ` Taylor Blau [this message]
2023-07-10 21:12   ` [PATCH v5 14/16] builtin/receive-pack.c: avoid enumerating hidden references Taylor Blau
2023-07-10 21:12   ` [PATCH v5 15/16] upload-pack.c: avoid enumerating hidden refs where possible Taylor Blau
2023-07-10 21:12   ` [PATCH v5 16/16] ls-refs.c: " Taylor Blau
2023-07-10 22:35   ` [PATCH v5 00/16] refs: implement jump lists for packed backend Junio C Hamano
2023-07-11  9:37     ` Patrick Steinhardt
2023-07-11 15:56       ` Junio C Hamano
2023-07-11 17:19         ` Taylor Blau

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