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cache.h: create 'index_name_pos_sparse()'

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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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Victoria Dye
2022-08-08 19:07:51 +00:00
committed by Junio C Hamano
parent 56d8a27124
commit 9553aa0f6c
2 changed files with 14 additions and 0 deletions
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5
read-cache.c
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@ -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;