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refs: expose 'for_each_fullref_in_prefixes'

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This function was used in the ref-filter.c code to find the longest
common prefix of among a set of refspecs, and then to iterate all of the
references that descend from that prefix.

A future patch will want to use that same code from ls-refs.c, so
prepare by exposing and moving it to refs.c. Since there is nothing
specific to the ref-filter code here (other than that it was previously
the only caller of this function), this really belongs in the more
generic refs.h header.

The code moved in this patch is identical before and after, with the one
exception of renaming some arguments to be consistent with other
functions exposed in refs.h.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Taylor Blau
2021-01-20 11:04:21 -05:00
committed by Junio C Hamano
parent 71ca53e812
commit 16b1985be5
3 changed files with 98 additions and 72 deletions
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9
refs.h
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@ -347,6 +347,15 @@ int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data,
unsigned int broken);
/**
* iterate all refs in "patterns" by partitioning patterns into disjoint sets
* and iterating the longest-common prefix of each set.
*
* callers should be prepared to ignore references that they did not ask for.
*/
int for_each_fullref_in_prefixes(const char *namespace, const char **patterns,
each_ref_fn fn, void *cb_data,
unsigned int broken);
/**
* iterate refs from the respective area.
*/