struct expire_reflog_cb: a new callback data type

Add a new data type, "struct expire_reflog_cb", for holding the data that expire_reflog() passes to expire_reflog_ent() via for_each_reflog_ent(). For now it only holds a pointer to a "struct expire_reflog_policy_cb", which still contains all of the actual data. In future commits we will move some fields from the latter to the former. Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed Dec 12, 2014 at 09:56 UTC ddd64c566d0b9d110ec51e269b8ce8630fa36348
1 file changed +26 -17
builtin/reflog.c
+26 -17
@@ -50,10 +50,15 @@ struct expire_reflog_policy_cb {
50 struct commit_list *tips;
51 };
52
53 +struct expire_reflog_cb {
54 + void *policy_cb;
55 +};
56 +
57 struct collected_reflog {
58 unsigned char sha1[20];
59 char reflog[FLEX_ARRAY];
60 };
61 +
62 struct collect_reflog_cb {
63 struct collected_reflog **e;
64 int alloc;
@@ -328,28 +333,29 @@ static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
333 const char *email, unsigned long timestamp, int tz,
334 const char *message, void *cb_data)
335 {
331 - struct expire_reflog_policy_cb *cb = cb_data;
336 + struct expire_reflog_cb *cb = cb_data;
337 + struct expire_reflog_policy_cb *policy_cb = cb->policy_cb;
338
333 - if (cb->cmd->rewrite)
334 - osha1 = cb->last_kept_sha1;
339 + if (policy_cb->cmd->rewrite)
340 + osha1 = policy_cb->last_kept_sha1;
341
342 if (should_expire_reflog_ent(osha1, nsha1, email, timestamp, tz,
337 - message, cb_data)) {
338 - if (!cb->newlog)
343 + message, policy_cb)) {
344 + if (!policy_cb->newlog)
345 printf("would prune %s", message);
340 - else if (cb->cmd->verbose)
346 + else if (policy_cb->cmd->verbose)
347 printf("prune %s", message);
348 } else {
343 - if (cb->newlog) {
349 + if (policy_cb->newlog) {
350 char sign = (tz < 0) ? '-' : '+';
351 int zone = (tz < 0) ? (-tz) : tz;
346 - fprintf(cb->newlog, "%s %s %s %lu %c%04d\t%s",
352 + fprintf(policy_cb->newlog, "%s %s %s %lu %c%04d\t%s",
353 sha1_to_hex(osha1), sha1_to_hex(nsha1),
354 email, timestamp, sign, zone,
355 message);
350 - hashcpy(cb->last_kept_sha1, nsha1);
356 + hashcpy(policy_cb->last_kept_sha1, nsha1);
357 }
352 - if (cb->cmd->verbose)
358 + if (policy_cb->cmd->verbose)
359 printf("keep %s", message);
360 }
361 return 0;
@@ -421,12 +427,15 @@ static int expire_reflog(const char *refname, const unsigned char *sha1,
427 unsigned int flags, struct cmd_reflog_expire_cb *cmd)
428 {
429 static struct lock_file reflog_lock;
424 - struct expire_reflog_policy_cb cb;
430 + struct expire_reflog_cb cb;
431 + struct expire_reflog_policy_cb policy_cb;
432 struct ref_lock *lock;
433 char *log_file;
434 int status = 0;
435
436 memset(&cb, 0, sizeof(cb));
437 + memset(&policy_cb, 0, sizeof(policy_cb));
438 + cb.policy_cb = &policy_cb;
439
440 /*
441 * The reflog file is locked by holding the lock on the
@@ -457,19 +466,19 @@ static int expire_reflog(const char *refname, const unsigned char *sha1,
466 strbuf_release(&err);
467 goto failure;
468 }
460 - cb.newlog = fdopen_lock_file(&reflog_lock, "w");
461 - if (!cb.newlog) {
469 + policy_cb.newlog = fdopen_lock_file(&reflog_lock, "w");
470 + if (!policy_cb.newlog) {
471 error("cannot fdopen %s (%s)",
472 reflog_lock.filename.buf, strerror(errno));
473 goto failure;
474 }
475 }
476
468 - cb.cmd = cmd;
477 + policy_cb.cmd = cmd;
478
470 - reflog_expiry_prepare(refname, sha1, &cb);
479 + reflog_expiry_prepare(refname, sha1, &policy_cb);
480 for_each_reflog_ent(refname, expire_reflog_ent, &cb);
472 - reflog_expiry_cleanup(&cb);
481 + reflog_expiry_cleanup(&policy_cb);
482
483 if (!(flags & EXPIRE_REFLOGS_DRY_RUN)) {
484 if (close_lock_file(&reflog_lock)) {
@@ -477,7 +486,7 @@ static int expire_reflog(const char *refname, const unsigned char *sha1,
486 strerror(errno));
487 } else if ((flags & EXPIRE_REFLOGS_UPDATE_REF) &&
488 (write_in_full(lock->lock_fd,
480 - sha1_to_hex(cb.last_kept_sha1), 40) != 40 ||
489 + sha1_to_hex(policy_cb.last_kept_sha1), 40) != 40 ||
490 write_str_in_full(lock->lock_fd, "\n") != 1 ||
491 close_ref(lock) < 0)) {
492 status |= error("couldn't write %s",