From: "Victoria Dye via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: derrickstolee@github.com, shaoxuan.yuan02@gmail.com,
newren@gmail.com, gitster@pobox.com,
Victoria Dye <vdye@github.com>, Victoria Dye <vdye@github.com>
Subject: [PATCH v3 3/4] cache.h: create 'index_name_pos_sparse()'
Date: Mon, 08 Aug 2022 19:07:51 +0000 [thread overview]
Message-ID: <d0bdec63286e320a12cca3f0bb8a780ae451caf2.1659985672.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1312.v3.git.1659985672.gitgitgadget@gmail.com>
From: Victoria Dye <vdye@github.com>
Add 'index_name_pos_sparse()', which behaves the same as 'index_name_pos()',
except that it does not expand a sparse index to search for an entry inside
a sparse directory.
'index_entry_exists()' was originally implemented in 20ec2d034c (reset: make
sparse-aware (except --mixed), 2021-11-29) as an alternative to
'index_name_pos()' to allow callers to search for an index entry without
expanding a sparse index. However, that particular use case only required
knowing whether the requested entry existed, so 'index_entry_exists()' does
not return the index positioning information provided by 'index_name_pos()'.
This patch implements 'index_name_pos_sparse()' to accommodate callers that
need the positioning information of 'index_name_pos()', but do not want to
expand the index.
Signed-off-by: Victoria Dye <vdye@github.com>
---
cache.h | 9 +++++++++
read-cache.c | 5 +++++
2 files changed, 14 insertions(+)
diff --git a/cache.h b/cache.h
index 4aa1bd079d5..4fa3be26393 100644
--- a/cache.h
+++ b/cache.h
@@ -830,6 +830,15 @@ struct cache_entry *index_file_exists(struct index_state *istate, const char *na
*/
int index_name_pos(struct index_state *, const char *name, int namelen);
+/*
+ * Like index_name_pos, returns the position of an entry of the given name in
+ * the index if one exists, otherwise returns a negative value where the negated
+ * value minus 1 is the position where the index entry would be inserted. Unlike
+ * index_name_pos, however, a sparse index is not expanded to find an entry
+ * inside a sparse directory.
+ */
+int index_name_pos_sparse(struct index_state *, const char *name, int namelen);
+
/*
* Determines whether an entry with the given name exists within the
* given index. The return value is 1 if an exact match is found, otherwise
diff --git a/read-cache.c b/read-cache.c
index 4de207752dc..b09128b1884 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -620,6 +620,11 @@ int index_name_pos(struct index_state *istate, const char *name, int namelen)
return index_name_stage_pos(istate, name, namelen, 0, EXPAND_SPARSE);
}
+int index_name_pos_sparse(struct index_state *istate, const char *name, int namelen)
+{
+ return index_name_stage_pos(istate, name, namelen, 0, NO_EXPAND_SPARSE);
+}
+
int index_entry_exists(struct index_state *istate, const char *name, int namelen)
{
return index_name_stage_pos(istate, name, namelen, 0, NO_EXPAND_SPARSE) >= 0;
--
gitgitgadget
next prev parent reply other threads:[~2022-08-08 19:08 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-04 20:46 [PATCH 0/4] reset/checkout: fix miscellaneous sparse index bugs Victoria Dye via GitGitGadget
2022-08-04 20:46 ` [PATCH 1/4] checkout: fix nested sparse directory diff in sparse index Victoria Dye via GitGitGadget
2022-08-05 17:59 ` Derrick Stolee
2022-08-04 20:46 ` [PATCH 2/4] oneway_diff: handle removed sparse directories Victoria Dye via GitGitGadget
2022-08-04 20:46 ` [PATCH 3/4] cache.h: replace 'index_entry_exists()' with 'index_name_pos_sparse()' Victoria Dye via GitGitGadget
2022-08-04 22:16 ` Junio C Hamano
2022-08-06 0:09 ` Junio C Hamano
2022-08-04 20:46 ` [PATCH 4/4] unpack-trees: handle missing sparse directories Victoria Dye via GitGitGadget
2022-08-04 23:23 ` Junio C Hamano
2022-08-05 16:36 ` Victoria Dye
2022-08-05 19:24 ` Junio C Hamano
2022-08-07 2:57 ` [PATCH v2 0/4] reset/checkout: fix miscellaneous sparse index bugs Victoria Dye via GitGitGadget
2022-08-07 2:57 ` [PATCH v2 1/4] checkout: fix nested sparse directory diff in sparse index Victoria Dye via GitGitGadget
2022-08-07 2:57 ` [PATCH v2 2/4] oneway_diff: handle removed sparse directories Victoria Dye via GitGitGadget
2022-08-07 2:57 ` [PATCH v2 3/4] cache.h: create 'index_name_pos_sparse()' Victoria Dye via GitGitGadget
2022-08-07 2:57 ` [PATCH v2 4/4] unpack-trees: unpack new trees as sparse directories Victoria Dye via GitGitGadget
2022-08-08 19:07 ` [PATCH v3 0/4] reset/checkout: fix miscellaneous sparse index bugs Victoria Dye via GitGitGadget
2022-08-08 19:07 ` [PATCH v3 1/4] checkout: fix nested sparse directory diff in sparse index Victoria Dye via GitGitGadget
2022-08-08 19:07 ` [PATCH v3 2/4] oneway_diff: handle removed sparse directories Victoria Dye via GitGitGadget
2022-08-08 19:07 ` Victoria Dye via GitGitGadget [this message]
2022-08-08 19:07 ` [PATCH v3 4/4] unpack-trees: unpack new trees as " Victoria Dye via GitGitGadget
2022-08-08 21:17 ` [PATCH v3 0/4] reset/checkout: fix miscellaneous sparse index bugs Junio C Hamano
2022-08-09 13:20 ` Derrick Stolee
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