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worktree: teach worktree to lazy-load "prunable" reason

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Add worktree_prune_reason() to allow a caller to discover whether a
worktree is prunable and the reason that it is, much like
worktree_lock_reason() indicates whether a worktree is locked and the
reason for the lock. As with worktree_lock_reason(), retrieve the
prunable reason lazily and cache it in the `worktree` structure.

Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Rafael Silva <rafaeloliveira.cs@gmail.com>
Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Rafael Silva
2021-01-19 22:27:34 +01:00
committed by Junio C Hamano
parent a29a8b7574
commit fc0c7d5e9e
2 changed files with 29 additions and 0 deletions
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20
worktree.c
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@@ -15,6 +15,7 @@ void free_worktrees(struct worktree **worktrees)
free(worktrees[i]->id);
free(worktrees[i]->head_ref);
free(worktrees[i]->lock_reason);
free(worktrees[i]->prune_reason);
free(worktrees[i]);
}
free (worktrees);
@@ -245,6 +246,25 @@ const char *worktree_lock_reason(struct worktree *wt)
return wt->lock_reason;
}
const char *worktree_prune_reason(struct worktree *wt, timestamp_t expire)
{
struct strbuf reason = STRBUF_INIT;
char *path = NULL;
if (is_main_worktree(wt))
return NULL;
if (wt->prune_reason_valid)
return wt->prune_reason;
if (should_prune_worktree(wt->id, &reason, &path, expire))
wt->prune_reason = strbuf_detach(&reason, NULL);
wt->prune_reason_valid = 1;
strbuf_release(&reason);
free(path);
return wt->prune_reason;
}
/* convenient wrapper to deal with NULL strbuf */
static void strbuf_addf_gently(struct strbuf *buf, const char *fmt, ...)
{