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1 | #include "builtin.h" | |
2 | #include "config.h" | |
3 | #include "lockfile.h" | |
4 | #include "commit.h" | |
5 | #include "refs.h" | |
6 | #include "dir.h" | |
7 | #include "tree-walk.h" | |
8 | #include "diff.h" | |
9 | #include "revision.h" | |
10 | #include "reachable.h" | |
11 | ||
12 | /* NEEDSWORK: switch to using parse_options */ | |
13 | static const char reflog_expire_usage[] = | |
14 | "git reflog expire [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] [--dry-run | -n] [--verbose] [--all] <refs>..."; | |
15 | static const char reflog_delete_usage[] = | |
16 | "git reflog delete [--rewrite] [--updateref] [--dry-run | -n] [--verbose] <refs>..."; | |
17 | static const char reflog_exists_usage[] = | |
18 | "git reflog exists <ref>"; | |
19 | ||
20 | static timestamp_t default_reflog_expire; | |
21 | static timestamp_t default_reflog_expire_unreachable; | |
22 | ||
23 | struct cmd_reflog_expire_cb { | |
24 | struct rev_info revs; | |
25 | int stalefix; | |
26 | timestamp_t expire_total; | |
27 | timestamp_t expire_unreachable; | |
28 | int recno; | |
29 | }; | |
30 | ||
31 | struct expire_reflog_policy_cb { | |
32 | enum { | |
33 | UE_NORMAL, | |
34 | UE_ALWAYS, | |
35 | UE_HEAD | |
36 | } unreachable_expire_kind; | |
37 | struct commit_list *mark_list; | |
38 | unsigned long mark_limit; | |
39 | struct cmd_reflog_expire_cb cmd; | |
40 | struct commit *tip_commit; | |
41 | struct commit_list *tips; | |
42 | }; | |
43 | ||
44 | struct collected_reflog { | |
45 | struct object_id oid; | |
46 | char reflog[FLEX_ARRAY]; | |
47 | }; | |
48 | ||
49 | struct collect_reflog_cb { | |
50 | struct collected_reflog **e; | |
51 | int alloc; | |
52 | int nr; | |
53 | }; | |
54 | ||
55 | #define INCOMPLETE (1u<<10) | |
56 | #define STUDYING (1u<<11) | |
57 | #define REACHABLE (1u<<12) | |
58 | ||
59 | static int tree_is_complete(const struct object_id *oid) | |
60 | { | |
61 | struct tree_desc desc; | |
62 | struct name_entry entry; | |
63 | int complete; | |
64 | struct tree *tree; | |
65 | ||
66 | tree = lookup_tree(oid); | |
67 | if (!tree) | |
68 | return 0; | |
69 | if (tree->object.flags & SEEN) | |
70 | return 1; | |
71 | if (tree->object.flags & INCOMPLETE) | |
72 | return 0; | |
73 | ||
74 | if (!tree->buffer) { | |
75 | enum object_type type; | |
76 | unsigned long size; | |
77 | void *data = read_sha1_file(oid->hash, &type, &size); | |
78 | if (!data) { | |
79 | tree->object.flags |= INCOMPLETE; | |
80 | return 0; | |
81 | } | |
82 | tree->buffer = data; | |
83 | tree->size = size; | |
84 | } | |
85 | init_tree_desc(&desc, tree->buffer, tree->size); | |
86 | complete = 1; | |
87 | while (tree_entry(&desc, &entry)) { | |
88 | if (!has_sha1_file(entry.oid->hash) || | |
89 | (S_ISDIR(entry.mode) && !tree_is_complete(entry.oid))) { | |
90 | tree->object.flags |= INCOMPLETE; | |
91 | complete = 0; | |
92 | } | |
93 | } | |
94 | free_tree_buffer(tree); | |
95 | ||
96 | if (complete) | |
97 | tree->object.flags |= SEEN; | |
98 | return complete; | |
99 | } | |
100 | ||
101 | static int commit_is_complete(struct commit *commit) | |
102 | { | |
103 | struct object_array study; | |
104 | struct object_array found; | |
105 | int is_incomplete = 0; | |
106 | int i; | |
107 | ||
108 | /* early return */ | |
109 | if (commit->object.flags & SEEN) | |
110 | return 1; | |
111 | if (commit->object.flags & INCOMPLETE) | |
112 | return 0; | |
113 | /* | |
114 | * Find all commits that are reachable and are not marked as | |
115 | * SEEN. Then make sure the trees and blobs contained are | |
116 | * complete. After that, mark these commits also as SEEN. | |
117 | * If some of the objects that are needed to complete this | |
118 | * commit are missing, mark this commit as INCOMPLETE. | |
119 | */ | |
120 | memset(&study, 0, sizeof(study)); | |
121 | memset(&found, 0, sizeof(found)); | |
122 | add_object_array(&commit->object, NULL, &study); | |
123 | add_object_array(&commit->object, NULL, &found); | |
124 | commit->object.flags |= STUDYING; | |
125 | while (study.nr) { | |
126 | struct commit *c; | |
127 | struct commit_list *parent; | |
128 | ||
129 | c = (struct commit *)object_array_pop(&study); | |
130 | if (!c->object.parsed && !parse_object(&c->object.oid)) | |
131 | c->object.flags |= INCOMPLETE; | |
132 | ||
133 | if (c->object.flags & INCOMPLETE) { | |
134 | is_incomplete = 1; | |
135 | break; | |
136 | } | |
137 | else if (c->object.flags & SEEN) | |
138 | continue; | |
139 | for (parent = c->parents; parent; parent = parent->next) { | |
140 | struct commit *p = parent->item; | |
141 | if (p->object.flags & STUDYING) | |
142 | continue; | |
143 | p->object.flags |= STUDYING; | |
144 | add_object_array(&p->object, NULL, &study); | |
145 | add_object_array(&p->object, NULL, &found); | |
146 | } | |
147 | } | |
148 | if (!is_incomplete) { | |
149 | /* | |
150 | * make sure all commits in "found" array have all the | |
151 | * necessary objects. | |
152 | */ | |
153 | for (i = 0; i < found.nr; i++) { | |
154 | struct commit *c = | |
155 | (struct commit *)found.objects[i].item; | |
156 | if (!tree_is_complete(&c->maybe_tree->object.oid)) { | |
157 | is_incomplete = 1; | |
158 | c->object.flags |= INCOMPLETE; | |
159 | } | |
160 | } | |
161 | if (!is_incomplete) { | |
162 | /* mark all found commits as complete, iow SEEN */ | |
163 | for (i = 0; i < found.nr; i++) | |
164 | found.objects[i].item->flags |= SEEN; | |
165 | } | |
166 | } | |
167 | /* clear flags from the objects we traversed */ | |
168 | for (i = 0; i < found.nr; i++) | |
169 | found.objects[i].item->flags &= ~STUDYING; | |
170 | if (is_incomplete) | |
171 | commit->object.flags |= INCOMPLETE; | |
172 | else { | |
173 | /* | |
174 | * If we come here, we have (1) traversed the ancestry chain | |
175 | * from the "commit" until we reach SEEN commits (which are | |
176 | * known to be complete), and (2) made sure that the commits | |
177 | * encountered during the above traversal refer to trees that | |
178 | * are complete. Which means that we know *all* the commits | |
179 | * we have seen during this process are complete. | |
180 | */ | |
181 | for (i = 0; i < found.nr; i++) | |
182 | found.objects[i].item->flags |= SEEN; | |
183 | } | |
184 | /* free object arrays */ | |
185 | object_array_clear(&study); | |
186 | object_array_clear(&found); | |
187 | return !is_incomplete; | |
188 | } | |
189 | ||
190 | static int keep_entry(struct commit **it, struct object_id *oid) | |
191 | { | |
192 | struct commit *commit; | |
193 | ||
194 | if (is_null_oid(oid)) | |
195 | return 1; | |
196 | commit = lookup_commit_reference_gently(oid, 1); | |
197 | if (!commit) | |
198 | return 0; | |
199 | ||
200 | /* | |
201 | * Make sure everything in this commit exists. | |
202 | * | |
203 | * We have walked all the objects reachable from the refs | |
204 | * and cache earlier. The commits reachable by this commit | |
205 | * must meet SEEN commits -- and then we should mark them as | |
206 | * SEEN as well. | |
207 | */ | |
208 | if (!commit_is_complete(commit)) | |
209 | return 0; | |
210 | *it = commit; | |
211 | return 1; | |
212 | } | |
213 | ||
214 | /* | |
215 | * Starting from commits in the cb->mark_list, mark commits that are | |
216 | * reachable from them. Stop the traversal at commits older than | |
217 | * the expire_limit and queue them back, so that the caller can call | |
218 | * us again to restart the traversal with longer expire_limit. | |
219 | */ | |
220 | static void mark_reachable(struct expire_reflog_policy_cb *cb) | |
221 | { | |
222 | struct commit_list *pending; | |
223 | timestamp_t expire_limit = cb->mark_limit; | |
224 | struct commit_list *leftover = NULL; | |
225 | ||
226 | for (pending = cb->mark_list; pending; pending = pending->next) | |
227 | pending->item->object.flags &= ~REACHABLE; | |
228 | ||
229 | pending = cb->mark_list; | |
230 | while (pending) { | |
231 | struct commit_list *parent; | |
232 | struct commit *commit = pop_commit(&pending); | |
233 | if (commit->object.flags & REACHABLE) | |
234 | continue; | |
235 | if (parse_commit(commit)) | |
236 | continue; | |
237 | commit->object.flags |= REACHABLE; | |
238 | if (commit->date < expire_limit) { | |
239 | commit_list_insert(commit, &leftover); | |
240 | continue; | |
241 | } | |
242 | commit->object.flags |= REACHABLE; | |
243 | parent = commit->parents; | |
244 | while (parent) { | |
245 | commit = parent->item; | |
246 | parent = parent->next; | |
247 | if (commit->object.flags & REACHABLE) | |
248 | continue; | |
249 | commit_list_insert(commit, &pending); | |
250 | } | |
251 | } | |
252 | cb->mark_list = leftover; | |
253 | } | |
254 | ||
255 | static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, struct object_id *oid) | |
256 | { | |
257 | /* | |
258 | * We may or may not have the commit yet - if not, look it | |
259 | * up using the supplied sha1. | |
260 | */ | |
261 | if (!commit) { | |
262 | if (is_null_oid(oid)) | |
263 | return 0; | |
264 | ||
265 | commit = lookup_commit_reference_gently(oid, 1); | |
266 | ||
267 | /* Not a commit -- keep it */ | |
268 | if (!commit) | |
269 | return 0; | |
270 | } | |
271 | ||
272 | /* Reachable from the current ref? Don't prune. */ | |
273 | if (commit->object.flags & REACHABLE) | |
274 | return 0; | |
275 | ||
276 | if (cb->mark_list && cb->mark_limit) { | |
277 | cb->mark_limit = 0; /* dig down to the root */ | |
278 | mark_reachable(cb); | |
279 | } | |
280 | ||
281 | return !(commit->object.flags & REACHABLE); | |
282 | } | |
283 | ||
284 | /* | |
285 | * Return true iff the specified reflog entry should be expired. | |
286 | */ | |
287 | static int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid, | |
288 | const char *email, timestamp_t timestamp, int tz, | |
289 | const char *message, void *cb_data) | |
290 | { | |
291 | struct expire_reflog_policy_cb *cb = cb_data; | |
292 | struct commit *old_commit, *new_commit; | |
293 | ||
294 | if (timestamp < cb->cmd.expire_total) | |
295 | return 1; | |
296 | ||
297 | old_commit = new_commit = NULL; | |
298 | if (cb->cmd.stalefix && | |
299 | (!keep_entry(&old_commit, ooid) || !keep_entry(&new_commit, noid))) | |
300 | return 1; | |
301 | ||
302 | if (timestamp < cb->cmd.expire_unreachable) { | |
303 | if (cb->unreachable_expire_kind == UE_ALWAYS) | |
304 | return 1; | |
305 | if (unreachable(cb, old_commit, ooid) || unreachable(cb, new_commit, noid)) | |
306 | return 1; | |
307 | } | |
308 | ||
309 | if (cb->cmd.recno && --(cb->cmd.recno) == 0) | |
310 | return 1; | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | static int push_tip_to_list(const char *refname, const struct object_id *oid, | |
316 | int flags, void *cb_data) | |
317 | { | |
318 | struct commit_list **list = cb_data; | |
319 | struct commit *tip_commit; | |
320 | if (flags & REF_ISSYMREF) | |
321 | return 0; | |
322 | tip_commit = lookup_commit_reference_gently(oid, 1); | |
323 | if (!tip_commit) | |
324 | return 0; | |
325 | commit_list_insert(tip_commit, list); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | static void reflog_expiry_prepare(const char *refname, | |
330 | const struct object_id *oid, | |
331 | void *cb_data) | |
332 | { | |
333 | struct expire_reflog_policy_cb *cb = cb_data; | |
334 | ||
335 | if (!cb->cmd.expire_unreachable || !strcmp(refname, "HEAD")) { | |
336 | cb->tip_commit = NULL; | |
337 | cb->unreachable_expire_kind = UE_HEAD; | |
338 | } else { | |
339 | cb->tip_commit = lookup_commit_reference_gently(oid, 1); | |
340 | if (!cb->tip_commit) | |
341 | cb->unreachable_expire_kind = UE_ALWAYS; | |
342 | else | |
343 | cb->unreachable_expire_kind = UE_NORMAL; | |
344 | } | |
345 | ||
346 | if (cb->cmd.expire_unreachable <= cb->cmd.expire_total) | |
347 | cb->unreachable_expire_kind = UE_ALWAYS; | |
348 | ||
349 | cb->mark_list = NULL; | |
350 | cb->tips = NULL; | |
351 | if (cb->unreachable_expire_kind != UE_ALWAYS) { | |
352 | if (cb->unreachable_expire_kind == UE_HEAD) { | |
353 | struct commit_list *elem; | |
354 | ||
355 | for_each_ref(push_tip_to_list, &cb->tips); | |
356 | for (elem = cb->tips; elem; elem = elem->next) | |
357 | commit_list_insert(elem->item, &cb->mark_list); | |
358 | } else { | |
359 | commit_list_insert(cb->tip_commit, &cb->mark_list); | |
360 | } | |
361 | cb->mark_limit = cb->cmd.expire_total; | |
362 | mark_reachable(cb); | |
363 | } | |
364 | } | |
365 | ||
366 | static void reflog_expiry_cleanup(void *cb_data) | |
367 | { | |
368 | struct expire_reflog_policy_cb *cb = cb_data; | |
369 | ||
370 | if (cb->unreachable_expire_kind != UE_ALWAYS) { | |
371 | if (cb->unreachable_expire_kind == UE_HEAD) { | |
372 | struct commit_list *elem; | |
373 | for (elem = cb->tips; elem; elem = elem->next) | |
374 | clear_commit_marks(elem->item, REACHABLE); | |
375 | free_commit_list(cb->tips); | |
376 | } else { | |
377 | clear_commit_marks(cb->tip_commit, REACHABLE); | |
378 | } | |
379 | } | |
380 | } | |
381 | ||
382 | static int collect_reflog(const char *ref, const struct object_id *oid, int unused, void *cb_data) | |
383 | { | |
384 | struct collected_reflog *e; | |
385 | struct collect_reflog_cb *cb = cb_data; | |
386 | ||
387 | FLEX_ALLOC_STR(e, reflog, ref); | |
388 | oidcpy(&e->oid, oid); | |
389 | ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc); | |
390 | cb->e[cb->nr++] = e; | |
391 | return 0; | |
392 | } | |
393 | ||
394 | static struct reflog_expire_cfg { | |
395 | struct reflog_expire_cfg *next; | |
396 | timestamp_t expire_total; | |
397 | timestamp_t expire_unreachable; | |
398 | char pattern[FLEX_ARRAY]; | |
399 | } *reflog_expire_cfg, **reflog_expire_cfg_tail; | |
400 | ||
401 | static struct reflog_expire_cfg *find_cfg_ent(const char *pattern, size_t len) | |
402 | { | |
403 | struct reflog_expire_cfg *ent; | |
404 | ||
405 | if (!reflog_expire_cfg_tail) | |
406 | reflog_expire_cfg_tail = &reflog_expire_cfg; | |
407 | ||
408 | for (ent = reflog_expire_cfg; ent; ent = ent->next) | |
409 | if (!strncmp(ent->pattern, pattern, len) && | |
410 | ent->pattern[len] == '\0') | |
411 | return ent; | |
412 | ||
413 | FLEX_ALLOC_MEM(ent, pattern, pattern, len); | |
414 | *reflog_expire_cfg_tail = ent; | |
415 | reflog_expire_cfg_tail = &(ent->next); | |
416 | return ent; | |
417 | } | |
418 | ||
419 | /* expiry timer slot */ | |
420 | #define EXPIRE_TOTAL 01 | |
421 | #define EXPIRE_UNREACH 02 | |
422 | ||
423 | static int reflog_expire_config(const char *var, const char *value, void *cb) | |
424 | { | |
425 | const char *pattern, *key; | |
426 | int pattern_len; | |
427 | timestamp_t expire; | |
428 | int slot; | |
429 | struct reflog_expire_cfg *ent; | |
430 | ||
431 | if (parse_config_key(var, "gc", &pattern, &pattern_len, &key) < 0) | |
432 | return git_default_config(var, value, cb); | |
433 | ||
434 | if (!strcmp(key, "reflogexpire")) { | |
435 | slot = EXPIRE_TOTAL; | |
436 | if (git_config_expiry_date(&expire, var, value)) | |
437 | return -1; | |
438 | } else if (!strcmp(key, "reflogexpireunreachable")) { | |
439 | slot = EXPIRE_UNREACH; | |
440 | if (git_config_expiry_date(&expire, var, value)) | |
441 | return -1; | |
442 | } else | |
443 | return git_default_config(var, value, cb); | |
444 | ||
445 | if (!pattern) { | |
446 | switch (slot) { | |
447 | case EXPIRE_TOTAL: | |
448 | default_reflog_expire = expire; | |
449 | break; | |
450 | case EXPIRE_UNREACH: | |
451 | default_reflog_expire_unreachable = expire; | |
452 | break; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
457 | ent = find_cfg_ent(pattern, pattern_len); | |
458 | if (!ent) | |
459 | return -1; | |
460 | switch (slot) { | |
461 | case EXPIRE_TOTAL: | |
462 | ent->expire_total = expire; | |
463 | break; | |
464 | case EXPIRE_UNREACH: | |
465 | ent->expire_unreachable = expire; | |
466 | break; | |
467 | } | |
468 | return 0; | |
469 | } | |
470 | ||
471 | static void set_reflog_expiry_param(struct cmd_reflog_expire_cb *cb, int slot, const char *ref) | |
472 | { | |
473 | struct reflog_expire_cfg *ent; | |
474 | ||
475 | if (slot == (EXPIRE_TOTAL|EXPIRE_UNREACH)) | |
476 | return; /* both given explicitly -- nothing to tweak */ | |
477 | ||
478 | for (ent = reflog_expire_cfg; ent; ent = ent->next) { | |
479 | if (!wildmatch(ent->pattern, ref, 0)) { | |
480 | if (!(slot & EXPIRE_TOTAL)) | |
481 | cb->expire_total = ent->expire_total; | |
482 | if (!(slot & EXPIRE_UNREACH)) | |
483 | cb->expire_unreachable = ent->expire_unreachable; | |
484 | return; | |
485 | } | |
486 | } | |
487 | ||
488 | /* | |
489 | * If unconfigured, make stash never expire | |
490 | */ | |
491 | if (!strcmp(ref, "refs/stash")) { | |
492 | if (!(slot & EXPIRE_TOTAL)) | |
493 | cb->expire_total = 0; | |
494 | if (!(slot & EXPIRE_UNREACH)) | |
495 | cb->expire_unreachable = 0; | |
496 | return; | |
497 | } | |
498 | ||
499 | /* Nothing matched -- use the default value */ | |
500 | if (!(slot & EXPIRE_TOTAL)) | |
501 | cb->expire_total = default_reflog_expire; | |
502 | if (!(slot & EXPIRE_UNREACH)) | |
503 | cb->expire_unreachable = default_reflog_expire_unreachable; | |
504 | } | |
505 | ||
506 | static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) | |
507 | { | |
508 | struct expire_reflog_policy_cb cb; | |
509 | timestamp_t now = time(NULL); | |
510 | int i, status, do_all; | |
511 | int explicit_expiry = 0; | |
512 | unsigned int flags = 0; | |
513 | ||
514 | default_reflog_expire_unreachable = now - 30 * 24 * 3600; | |
515 | default_reflog_expire = now - 90 * 24 * 3600; | |
516 | git_config(reflog_expire_config, NULL); | |
517 | ||
518 | save_commit_buffer = 0; | |
519 | do_all = status = 0; | |
520 | memset(&cb, 0, sizeof(cb)); | |
521 | ||
522 | cb.cmd.expire_total = default_reflog_expire; | |
523 | cb.cmd.expire_unreachable = default_reflog_expire_unreachable; | |
524 | ||
525 | for (i = 1; i < argc; i++) { | |
526 | const char *arg = argv[i]; | |
527 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
528 | flags |= EXPIRE_REFLOGS_DRY_RUN; | |
529 | else if (starts_with(arg, "--expire=")) { | |
530 | if (parse_expiry_date(arg + 9, &cb.cmd.expire_total)) | |
531 | die(_("'%s' is not a valid timestamp"), arg); | |
532 | explicit_expiry |= EXPIRE_TOTAL; | |
533 | } | |
534 | else if (starts_with(arg, "--expire-unreachable=")) { | |
535 | if (parse_expiry_date(arg + 21, &cb.cmd.expire_unreachable)) | |
536 | die(_("'%s' is not a valid timestamp"), arg); | |
537 | explicit_expiry |= EXPIRE_UNREACH; | |
538 | } | |
539 | else if (!strcmp(arg, "--stale-fix")) | |
540 | cb.cmd.stalefix = 1; | |
541 | else if (!strcmp(arg, "--rewrite")) | |
542 | flags |= EXPIRE_REFLOGS_REWRITE; | |
543 | else if (!strcmp(arg, "--updateref")) | |
544 | flags |= EXPIRE_REFLOGS_UPDATE_REF; | |
545 | else if (!strcmp(arg, "--all")) | |
546 | do_all = 1; | |
547 | else if (!strcmp(arg, "--verbose")) | |
548 | flags |= EXPIRE_REFLOGS_VERBOSE; | |
549 | else if (!strcmp(arg, "--")) { | |
550 | i++; | |
551 | break; | |
552 | } | |
553 | else if (arg[0] == '-') | |
554 | usage(reflog_expire_usage); | |
555 | else | |
556 | break; | |
557 | } | |
558 | ||
559 | /* | |
560 | * We can trust the commits and objects reachable from refs | |
561 | * even in older repository. We cannot trust what's reachable | |
562 | * from reflog if the repository was pruned with older git. | |
563 | */ | |
564 | if (cb.cmd.stalefix) { | |
565 | init_revisions(&cb.cmd.revs, prefix); | |
566 | if (flags & EXPIRE_REFLOGS_VERBOSE) | |
567 | printf("Marking reachable objects..."); | |
568 | mark_reachable_objects(&cb.cmd.revs, 0, 0, NULL); | |
569 | if (flags & EXPIRE_REFLOGS_VERBOSE) | |
570 | putchar('\n'); | |
571 | } | |
572 | ||
573 | if (do_all) { | |
574 | struct collect_reflog_cb collected; | |
575 | int i; | |
576 | ||
577 | memset(&collected, 0, sizeof(collected)); | |
578 | for_each_reflog(collect_reflog, &collected); | |
579 | for (i = 0; i < collected.nr; i++) { | |
580 | struct collected_reflog *e = collected.e[i]; | |
581 | set_reflog_expiry_param(&cb.cmd, explicit_expiry, e->reflog); | |
582 | status |= reflog_expire(e->reflog, &e->oid, flags, | |
583 | reflog_expiry_prepare, | |
584 | should_expire_reflog_ent, | |
585 | reflog_expiry_cleanup, | |
586 | &cb); | |
587 | free(e); | |
588 | } | |
589 | free(collected.e); | |
590 | } | |
591 | ||
592 | for (; i < argc; i++) { | |
593 | char *ref; | |
594 | struct object_id oid; | |
595 | if (!dwim_log(argv[i], strlen(argv[i]), &oid, &ref)) { | |
596 | status |= error("%s points nowhere!", argv[i]); | |
597 | continue; | |
598 | } | |
599 | set_reflog_expiry_param(&cb.cmd, explicit_expiry, ref); | |
600 | status |= reflog_expire(ref, &oid, flags, | |
601 | reflog_expiry_prepare, | |
602 | should_expire_reflog_ent, | |
603 | reflog_expiry_cleanup, | |
604 | &cb); | |
605 | } | |
606 | return status; | |
607 | } | |
608 | ||
609 | static int count_reflog_ent(struct object_id *ooid, struct object_id *noid, | |
610 | const char *email, timestamp_t timestamp, int tz, | |
611 | const char *message, void *cb_data) | |
612 | { | |
613 | struct expire_reflog_policy_cb *cb = cb_data; | |
614 | if (!cb->cmd.expire_total || timestamp < cb->cmd.expire_total) | |
615 | cb->cmd.recno++; | |
616 | return 0; | |
617 | } | |
618 | ||
619 | static int cmd_reflog_delete(int argc, const char **argv, const char *prefix) | |
620 | { | |
621 | struct expire_reflog_policy_cb cb; | |
622 | int i, status = 0; | |
623 | unsigned int flags = 0; | |
624 | ||
625 | memset(&cb, 0, sizeof(cb)); | |
626 | ||
627 | for (i = 1; i < argc; i++) { | |
628 | const char *arg = argv[i]; | |
629 | if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) | |
630 | flags |= EXPIRE_REFLOGS_DRY_RUN; | |
631 | else if (!strcmp(arg, "--rewrite")) | |
632 | flags |= EXPIRE_REFLOGS_REWRITE; | |
633 | else if (!strcmp(arg, "--updateref")) | |
634 | flags |= EXPIRE_REFLOGS_UPDATE_REF; | |
635 | else if (!strcmp(arg, "--verbose")) | |
636 | flags |= EXPIRE_REFLOGS_VERBOSE; | |
637 | else if (!strcmp(arg, "--")) { | |
638 | i++; | |
639 | break; | |
640 | } | |
641 | else if (arg[0] == '-') | |
642 | usage(reflog_delete_usage); | |
643 | else | |
644 | break; | |
645 | } | |
646 | ||
647 | if (argc - i < 1) | |
648 | return error("Nothing to delete?"); | |
649 | ||
650 | for ( ; i < argc; i++) { | |
651 | const char *spec = strstr(argv[i], "@{"); | |
652 | struct object_id oid; | |
653 | char *ep, *ref; | |
654 | int recno; | |
655 | ||
656 | if (!spec) { | |
657 | status |= error("Not a reflog: %s", argv[i]); | |
658 | continue; | |
659 | } | |
660 | ||
661 | if (!dwim_log(argv[i], spec - argv[i], &oid, &ref)) { | |
662 | status |= error("no reflog for '%s'", argv[i]); | |
663 | continue; | |
664 | } | |
665 | ||
666 | recno = strtoul(spec + 2, &ep, 10); | |
667 | if (*ep == '}') { | |
668 | cb.cmd.recno = -recno; | |
669 | for_each_reflog_ent(ref, count_reflog_ent, &cb); | |
670 | } else { | |
671 | cb.cmd.expire_total = approxidate(spec + 2); | |
672 | for_each_reflog_ent(ref, count_reflog_ent, &cb); | |
673 | cb.cmd.expire_total = 0; | |
674 | } | |
675 | ||
676 | status |= reflog_expire(ref, &oid, flags, | |
677 | reflog_expiry_prepare, | |
678 | should_expire_reflog_ent, | |
679 | reflog_expiry_cleanup, | |
680 | &cb); | |
681 | free(ref); | |
682 | } | |
683 | return status; | |
684 | } | |
685 | ||
686 | static int cmd_reflog_exists(int argc, const char **argv, const char *prefix) | |
687 | { | |
688 | int i, start = 0; | |
689 | ||
690 | for (i = 1; i < argc; i++) { | |
691 | const char *arg = argv[i]; | |
692 | if (!strcmp(arg, "--")) { | |
693 | i++; | |
694 | break; | |
695 | } | |
696 | else if (arg[0] == '-') | |
697 | usage(reflog_exists_usage); | |
698 | else | |
699 | break; | |
700 | } | |
701 | ||
702 | start = i; | |
703 | ||
704 | if (argc - start != 1) | |
705 | usage(reflog_exists_usage); | |
706 | ||
707 | if (check_refname_format(argv[start], REFNAME_ALLOW_ONELEVEL)) | |
708 | die("invalid ref format: %s", argv[start]); | |
709 | return !reflog_exists(argv[start]); | |
710 | } | |
711 | ||
712 | /* | |
713 | * main "reflog" | |
714 | */ | |
715 | ||
716 | static const char reflog_usage[] = | |
717 | "git reflog [ show | expire | delete | exists ]"; | |
718 | ||
719 | int cmd_reflog(int argc, const char **argv, const char *prefix) | |
720 | { | |
721 | if (argc > 1 && !strcmp(argv[1], "-h")) | |
722 | usage(reflog_usage); | |
723 | ||
724 | /* With no command, we default to showing it. */ | |
725 | if (argc < 2 || *argv[1] == '-') | |
726 | return cmd_log_reflog(argc, argv, prefix); | |
727 | ||
728 | if (!strcmp(argv[1], "show")) | |
729 | return cmd_log_reflog(argc - 1, argv + 1, prefix); | |
730 | ||
731 | if (!strcmp(argv[1], "expire")) | |
732 | return cmd_reflog_expire(argc - 1, argv + 1, prefix); | |
733 | ||
734 | if (!strcmp(argv[1], "delete")) | |
735 | return cmd_reflog_delete(argc - 1, argv + 1, prefix); | |
736 | ||
737 | if (!strcmp(argv[1], "exists")) | |
738 | return cmd_reflog_exists(argc - 1, argv + 1, prefix); | |
739 | ||
740 | return cmd_log_reflog(argc, argv, prefix); | |
741 | } |