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Extract function should_expire_reflog_ent()

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Extract from expire_reflog_ent() a function that is solely responsible
for deciding whether a reflog entry should be expired. By separating
this "business logic" from the mechanics of actually expiring entries,
we are working towards the goal of encapsulating reflog expiry within
the refs API, with policy decided by a callback function passed to it
by its caller.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Haggerty 2014-12-12 09:56:47 +01:00 committed by Junio C Hamano
parent f3b661f766
commit 60cc3c4072
1 changed files with 41 additions and 27 deletions
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44
builtin/reflog.c
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@ -288,7 +288,10 @@ static int unreachable(struct expire_reflog_cb *cb, struct commit *commit, unsig
return !(commit->object.flags & REACHABLE);
}
static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
/*
* Return true iff the specified reflog entry should be expired.
*/
static int should_expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
const char *email, unsigned long timestamp, int tz,
const char *message, void *cb_data)
{
@ -296,26 +299,42 @@ static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
struct commit *old, *new;
if (timestamp < cb->cmd->expire_total)
goto prune;
if (cb->cmd->rewrite)
osha1 = cb->last_kept_sha1;
return 1;
old = new = NULL;
if (cb->cmd->stalefix &&
(!keep_entry(&old, osha1) || !keep_entry(&new, nsha1)))
goto prune;
return 1;
if (timestamp < cb->cmd->expire_unreachable) {
if (cb->unreachable_expire_kind == UE_ALWAYS)
goto prune;
return 1;
if (unreachable(cb, old, osha1) || unreachable(cb, new, nsha1))
goto prune;
return 1;
}
if (cb->cmd->recno && --(cb->cmd->recno) == 0)
goto prune;
return 1;
return 0;
}
static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
const char *email, unsigned long timestamp, int tz,
const char *message, void *cb_data)
{
struct expire_reflog_cb *cb = cb_data;
if (cb->cmd->rewrite)
osha1 = cb->last_kept_sha1;
if (should_expire_reflog_ent(osha1, nsha1, email, timestamp, tz,
message, cb_data)) {
if (!cb->newlog)
printf("would prune %s", message);
else if (cb->cmd->verbose)
printf("prune %s", message);
} else {
if (cb->newlog) {
char sign = (tz < 0) ? '-' : '+';
int zone = (tz < 0) ? (-tz) : tz;
@ -327,12 +346,7 @@ static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
}
if (cb->cmd->verbose)
printf("keep %s", message);
return 0;
prune:
if (!cb->newlog)
printf("would prune %s", message);
else if (cb->cmd->verbose)
printf("prune %s", message);
}
return 0;
}