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Commit | Line | Data |
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ae563542 LT |
1 | #include "cache.h" |
2 | #include "tag.h" | |
3 | #include "blob.h" | |
4 | #include "tree.h" | |
5 | #include "commit.h" | |
a4a88b2b | 6 | #include "diff.h" |
ae563542 LT |
7 | #include "refs.h" |
8 | #include "revision.h" | |
9 | ||
10 | static char *path_name(struct name_path *path, const char *name) | |
11 | { | |
12 | struct name_path *p; | |
13 | char *n, *m; | |
14 | int nlen = strlen(name); | |
15 | int len = nlen + 1; | |
16 | ||
17 | for (p = path; p; p = p->up) { | |
18 | if (p->elem_len) | |
19 | len += p->elem_len + 1; | |
20 | } | |
21 | n = xmalloc(len); | |
22 | m = n + len - (nlen + 1); | |
23 | strcpy(m, name); | |
24 | for (p = path; p; p = p->up) { | |
25 | if (p->elem_len) { | |
26 | m -= p->elem_len + 1; | |
27 | memcpy(m, p->elem, p->elem_len); | |
28 | m[p->elem_len] = '/'; | |
29 | } | |
30 | } | |
31 | return n; | |
32 | } | |
33 | ||
34 | struct object_list **add_object(struct object *obj, | |
35 | struct object_list **p, | |
36 | struct name_path *path, | |
37 | const char *name) | |
38 | { | |
39 | struct object_list *entry = xmalloc(sizeof(*entry)); | |
40 | entry->item = obj; | |
41 | entry->next = *p; | |
42 | entry->name = path_name(path, name); | |
43 | *p = entry; | |
44 | return &entry->next; | |
45 | } | |
46 | ||
47 | static void mark_blob_uninteresting(struct blob *blob) | |
48 | { | |
49 | if (blob->object.flags & UNINTERESTING) | |
50 | return; | |
51 | blob->object.flags |= UNINTERESTING; | |
52 | } | |
53 | ||
54 | void mark_tree_uninteresting(struct tree *tree) | |
55 | { | |
f75e53ed | 56 | struct tree_desc desc; |
4c068a98 | 57 | struct name_entry entry; |
ae563542 | 58 | struct object *obj = &tree->object; |
ae563542 LT |
59 | |
60 | if (obj->flags & UNINTERESTING) | |
61 | return; | |
62 | obj->flags |= UNINTERESTING; | |
63 | if (!has_sha1_file(obj->sha1)) | |
64 | return; | |
65 | if (parse_tree(tree) < 0) | |
66 | die("bad tree %s", sha1_to_hex(obj->sha1)); | |
f75e53ed LT |
67 | |
68 | desc.buf = tree->buffer; | |
69 | desc.size = tree->size; | |
4c068a98 LT |
70 | while (tree_entry(&desc, &entry)) { |
71 | if (S_ISDIR(entry.mode)) | |
72 | mark_tree_uninteresting(lookup_tree(entry.sha1)); | |
ae563542 | 73 | else |
4c068a98 | 74 | mark_blob_uninteresting(lookup_blob(entry.sha1)); |
ae563542 | 75 | } |
f75e53ed LT |
76 | |
77 | /* | |
78 | * We don't care about the tree any more | |
79 | * after it has been marked uninteresting. | |
80 | */ | |
81 | free(tree->buffer); | |
82 | tree->buffer = NULL; | |
ae563542 LT |
83 | } |
84 | ||
85 | void mark_parents_uninteresting(struct commit *commit) | |
86 | { | |
87 | struct commit_list *parents = commit->parents; | |
88 | ||
89 | while (parents) { | |
90 | struct commit *commit = parents->item; | |
d2c4af73 MU |
91 | if (!(commit->object.flags & UNINTERESTING)) { |
92 | commit->object.flags |= UNINTERESTING; | |
ae563542 | 93 | |
d2c4af73 MU |
94 | /* |
95 | * Normally we haven't parsed the parent | |
96 | * yet, so we won't have a parent of a parent | |
97 | * here. However, it may turn out that we've | |
98 | * reached this commit some other way (where it | |
99 | * wasn't uninteresting), in which case we need | |
100 | * to mark its parents recursively too.. | |
101 | */ | |
102 | if (commit->parents) | |
103 | mark_parents_uninteresting(commit); | |
104 | } | |
ae563542 LT |
105 | |
106 | /* | |
107 | * A missing commit is ok iff its parent is marked | |
108 | * uninteresting. | |
109 | * | |
110 | * We just mark such a thing parsed, so that when | |
111 | * it is popped next time around, we won't be trying | |
112 | * to parse it and get an error. | |
113 | */ | |
114 | if (!has_sha1_file(commit->object.sha1)) | |
115 | commit->object.parsed = 1; | |
116 | parents = parents->next; | |
117 | } | |
118 | } | |
119 | ||
120 | static void add_pending_object(struct rev_info *revs, struct object *obj, const char *name) | |
121 | { | |
122 | add_object(obj, &revs->pending_objects, NULL, name); | |
123 | } | |
124 | ||
cd2bdc53 | 125 | static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags) |
ae563542 LT |
126 | { |
127 | struct object *object; | |
128 | ||
129 | object = parse_object(sha1); | |
130 | if (!object) | |
131 | die("bad object %s", name); | |
cd2bdc53 LT |
132 | object->flags |= flags; |
133 | return object; | |
134 | } | |
135 | ||
136 | static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name) | |
137 | { | |
138 | unsigned long flags = object->flags; | |
ae563542 LT |
139 | |
140 | /* | |
141 | * Tag object? Look what it points to.. | |
142 | */ | |
885a86ab | 143 | while (object->type == TYPE_TAG) { |
ae563542 | 144 | struct tag *tag = (struct tag *) object; |
cd2bdc53 | 145 | if (revs->tag_objects && !(flags & UNINTERESTING)) |
ae563542 LT |
146 | add_pending_object(revs, object, tag->tag); |
147 | object = parse_object(tag->tagged->sha1); | |
148 | if (!object) | |
149 | die("bad object %s", sha1_to_hex(tag->tagged->sha1)); | |
150 | } | |
151 | ||
152 | /* | |
153 | * Commit object? Just return it, we'll do all the complex | |
154 | * reachability crud. | |
155 | */ | |
885a86ab | 156 | if (object->type == TYPE_COMMIT) { |
ae563542 | 157 | struct commit *commit = (struct commit *)object; |
ae563542 LT |
158 | if (parse_commit(commit) < 0) |
159 | die("unable to parse commit %s", name); | |
d9a83684 | 160 | if (flags & UNINTERESTING) { |
4262c1b0 | 161 | commit->object.flags |= UNINTERESTING; |
ae563542 | 162 | mark_parents_uninteresting(commit); |
d9a83684 LT |
163 | revs->limited = 1; |
164 | } | |
ae563542 LT |
165 | return commit; |
166 | } | |
167 | ||
168 | /* | |
169 | * Tree object? Either mark it uniniteresting, or add it | |
170 | * to the list of objects to look at later.. | |
171 | */ | |
885a86ab | 172 | if (object->type == TYPE_TREE) { |
ae563542 LT |
173 | struct tree *tree = (struct tree *)object; |
174 | if (!revs->tree_objects) | |
175 | return NULL; | |
176 | if (flags & UNINTERESTING) { | |
177 | mark_tree_uninteresting(tree); | |
178 | return NULL; | |
179 | } | |
180 | add_pending_object(revs, object, ""); | |
181 | return NULL; | |
182 | } | |
183 | ||
184 | /* | |
185 | * Blob object? You know the drill by now.. | |
186 | */ | |
885a86ab | 187 | if (object->type == TYPE_BLOB) { |
ae563542 LT |
188 | struct blob *blob = (struct blob *)object; |
189 | if (!revs->blob_objects) | |
190 | return NULL; | |
191 | if (flags & UNINTERESTING) { | |
192 | mark_blob_uninteresting(blob); | |
193 | return NULL; | |
194 | } | |
195 | add_pending_object(revs, object, ""); | |
196 | return NULL; | |
197 | } | |
198 | die("%s is unknown object", name); | |
199 | } | |
200 | ||
a4a88b2b LT |
201 | static int everybody_uninteresting(struct commit_list *orig) |
202 | { | |
203 | struct commit_list *list = orig; | |
204 | while (list) { | |
205 | struct commit *commit = list->item; | |
206 | list = list->next; | |
207 | if (commit->object.flags & UNINTERESTING) | |
208 | continue; | |
209 | return 0; | |
210 | } | |
211 | return 1; | |
212 | } | |
213 | ||
8efdc326 | 214 | static int tree_difference = REV_TREE_SAME; |
a4a88b2b LT |
215 | |
216 | static void file_add_remove(struct diff_options *options, | |
217 | int addremove, unsigned mode, | |
218 | const unsigned char *sha1, | |
219 | const char *base, const char *path) | |
220 | { | |
8efdc326 | 221 | int diff = REV_TREE_DIFFERENT; |
a4a88b2b LT |
222 | |
223 | /* | |
8efdc326 FK |
224 | * Is it an add of a new file? It means that the old tree |
225 | * didn't have it at all, so we will turn "REV_TREE_SAME" -> | |
226 | * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone | |
227 | * (and if it already was "REV_TREE_NEW", we'll keep it | |
228 | * "REV_TREE_NEW" of course). | |
a4a88b2b LT |
229 | */ |
230 | if (addremove == '+') { | |
231 | diff = tree_difference; | |
8efdc326 | 232 | if (diff != REV_TREE_SAME) |
a4a88b2b | 233 | return; |
8efdc326 | 234 | diff = REV_TREE_NEW; |
a4a88b2b LT |
235 | } |
236 | tree_difference = diff; | |
237 | } | |
238 | ||
239 | static void file_change(struct diff_options *options, | |
240 | unsigned old_mode, unsigned new_mode, | |
241 | const unsigned char *old_sha1, | |
242 | const unsigned char *new_sha1, | |
243 | const char *base, const char *path) | |
244 | { | |
8efdc326 | 245 | tree_difference = REV_TREE_DIFFERENT; |
a4a88b2b LT |
246 | } |
247 | ||
c4e05b1a | 248 | int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2) |
a4a88b2b LT |
249 | { |
250 | if (!t1) | |
8efdc326 | 251 | return REV_TREE_NEW; |
a4a88b2b | 252 | if (!t2) |
8efdc326 FK |
253 | return REV_TREE_DIFFERENT; |
254 | tree_difference = REV_TREE_SAME; | |
c4e05b1a | 255 | if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", |
cd2bdc53 | 256 | &revs->pruning) < 0) |
8efdc326 | 257 | return REV_TREE_DIFFERENT; |
a4a88b2b LT |
258 | return tree_difference; |
259 | } | |
260 | ||
c4e05b1a | 261 | int rev_same_tree_as_empty(struct rev_info *revs, struct tree *t1) |
a4a88b2b LT |
262 | { |
263 | int retval; | |
264 | void *tree; | |
265 | struct tree_desc empty, real; | |
266 | ||
267 | if (!t1) | |
268 | return 0; | |
269 | ||
8e440259 | 270 | tree = read_object_with_reference(t1->object.sha1, tree_type, &real.size, NULL); |
a4a88b2b LT |
271 | if (!tree) |
272 | return 0; | |
273 | real.buf = tree; | |
274 | ||
275 | empty.buf = ""; | |
276 | empty.size = 0; | |
277 | ||
278 | tree_difference = 0; | |
cd2bdc53 | 279 | retval = diff_tree(&empty, &real, "", &revs->pruning); |
a4a88b2b LT |
280 | free(tree); |
281 | ||
282 | return retval >= 0 && !tree_difference; | |
283 | } | |
284 | ||
285 | static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) | |
286 | { | |
287 | struct commit_list **pp, *parent; | |
f3219fbb | 288 | int tree_changed = 0; |
a4a88b2b LT |
289 | |
290 | if (!commit->tree) | |
291 | return; | |
292 | ||
293 | if (!commit->parents) { | |
c4e05b1a | 294 | if (!rev_same_tree_as_empty(revs, commit->tree)) |
a4a88b2b LT |
295 | commit->object.flags |= TREECHANGE; |
296 | return; | |
297 | } | |
298 | ||
299 | pp = &commit->parents; | |
300 | while ((parent = *pp) != NULL) { | |
301 | struct commit *p = parent->item; | |
302 | ||
a4a88b2b | 303 | parse_commit(p); |
c4e05b1a | 304 | switch (rev_compare_tree(revs, p->tree, commit->tree)) { |
8efdc326 | 305 | case REV_TREE_SAME: |
9202434c | 306 | if (!revs->simplify_history || (p->object.flags & UNINTERESTING)) { |
f3219fbb JH |
307 | /* Even if a merge with an uninteresting |
308 | * side branch brought the entire change | |
309 | * we are interested in, we do not want | |
310 | * to lose the other branches of this | |
311 | * merge, so we just keep going. | |
312 | */ | |
313 | pp = &parent->next; | |
314 | continue; | |
315 | } | |
a4a88b2b LT |
316 | parent->next = NULL; |
317 | commit->parents = parent; | |
318 | return; | |
319 | ||
8efdc326 FK |
320 | case REV_TREE_NEW: |
321 | if (revs->remove_empty_trees && | |
c4e05b1a | 322 | rev_same_tree_as_empty(revs, p->tree)) { |
c348f31a JH |
323 | /* We are adding all the specified |
324 | * paths from this parent, so the | |
325 | * history beyond this parent is not | |
326 | * interesting. Remove its parents | |
327 | * (they are grandparents for us). | |
328 | * IOW, we pretend this parent is a | |
329 | * "root" commit. | |
a41e109c | 330 | */ |
c348f31a JH |
331 | parse_commit(p); |
332 | p->parents = NULL; | |
a4a88b2b LT |
333 | } |
334 | /* fallthrough */ | |
8efdc326 | 335 | case REV_TREE_DIFFERENT: |
f3219fbb | 336 | tree_changed = 1; |
a4a88b2b LT |
337 | pp = &parent->next; |
338 | continue; | |
339 | } | |
340 | die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1)); | |
341 | } | |
f3219fbb JH |
342 | if (tree_changed) |
343 | commit->object.flags |= TREECHANGE; | |
a4a88b2b LT |
344 | } |
345 | ||
346 | static void add_parents_to_list(struct rev_info *revs, struct commit *commit, struct commit_list **list) | |
347 | { | |
348 | struct commit_list *parent = commit->parents; | |
349 | ||
3381c790 LT |
350 | if (commit->object.flags & ADDED) |
351 | return; | |
352 | commit->object.flags |= ADDED; | |
353 | ||
a4a88b2b LT |
354 | /* |
355 | * If the commit is uninteresting, don't try to | |
356 | * prune parents - we want the maximal uninteresting | |
357 | * set. | |
358 | * | |
359 | * Normally we haven't parsed the parent | |
360 | * yet, so we won't have a parent of a parent | |
361 | * here. However, it may turn out that we've | |
362 | * reached this commit some other way (where it | |
363 | * wasn't uninteresting), in which case we need | |
364 | * to mark its parents recursively too.. | |
365 | */ | |
366 | if (commit->object.flags & UNINTERESTING) { | |
367 | while (parent) { | |
368 | struct commit *p = parent->item; | |
369 | parent = parent->next; | |
370 | parse_commit(p); | |
371 | p->object.flags |= UNINTERESTING; | |
372 | if (p->parents) | |
373 | mark_parents_uninteresting(p); | |
374 | if (p->object.flags & SEEN) | |
375 | continue; | |
376 | p->object.flags |= SEEN; | |
377 | insert_by_date(p, list); | |
378 | } | |
379 | return; | |
380 | } | |
381 | ||
382 | /* | |
383 | * Ok, the commit wasn't uninteresting. Try to | |
384 | * simplify the commit history and find the parent | |
385 | * that has no differences in the path set if one exists. | |
386 | */ | |
8efdc326 FK |
387 | if (revs->prune_fn) |
388 | revs->prune_fn(revs, commit); | |
a4a88b2b | 389 | |
ba1d4505 LT |
390 | if (revs->no_walk) |
391 | return; | |
392 | ||
a4a88b2b LT |
393 | parent = commit->parents; |
394 | while (parent) { | |
395 | struct commit *p = parent->item; | |
396 | ||
397 | parent = parent->next; | |
398 | ||
399 | parse_commit(p); | |
400 | if (p->object.flags & SEEN) | |
401 | continue; | |
402 | p->object.flags |= SEEN; | |
403 | insert_by_date(p, list); | |
404 | } | |
405 | } | |
406 | ||
407 | static void limit_list(struct rev_info *revs) | |
408 | { | |
409 | struct commit_list *list = revs->commits; | |
410 | struct commit_list *newlist = NULL; | |
411 | struct commit_list **p = &newlist; | |
412 | ||
413 | while (list) { | |
414 | struct commit_list *entry = list; | |
415 | struct commit *commit = list->item; | |
416 | struct object *obj = &commit->object; | |
417 | ||
418 | list = list->next; | |
419 | free(entry); | |
420 | ||
421 | if (revs->max_age != -1 && (commit->date < revs->max_age)) | |
422 | obj->flags |= UNINTERESTING; | |
423 | if (revs->unpacked && has_sha1_pack(obj->sha1)) | |
424 | obj->flags |= UNINTERESTING; | |
425 | add_parents_to_list(revs, commit, &list); | |
426 | if (obj->flags & UNINTERESTING) { | |
427 | mark_parents_uninteresting(commit); | |
428 | if (everybody_uninteresting(list)) | |
429 | break; | |
430 | continue; | |
431 | } | |
432 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
433 | continue; | |
434 | p = &commit_list_insert(commit, p)->next; | |
435 | } | |
384e99a4 | 436 | if (revs->boundary) { |
4c0fea0f JH |
437 | /* mark the ones that are on the result list first */ |
438 | for (list = newlist; list; list = list->next) { | |
439 | struct commit *commit = list->item; | |
440 | commit->object.flags |= TMP_MARK; | |
441 | } | |
442 | for (list = newlist; list; list = list->next) { | |
384e99a4 JH |
443 | struct commit *commit = list->item; |
444 | struct object *obj = &commit->object; | |
4c0fea0f JH |
445 | struct commit_list *parent; |
446 | if (obj->flags & UNINTERESTING) | |
384e99a4 | 447 | continue; |
4c0fea0f JH |
448 | for (parent = commit->parents; |
449 | parent; | |
450 | parent = parent->next) { | |
384e99a4 | 451 | struct commit *pcommit = parent->item; |
384e99a4 JH |
452 | if (!(pcommit->object.flags & UNINTERESTING)) |
453 | continue; | |
454 | pcommit->object.flags |= BOUNDARY; | |
4c0fea0f JH |
455 | if (pcommit->object.flags & TMP_MARK) |
456 | continue; | |
457 | pcommit->object.flags |= TMP_MARK; | |
384e99a4 JH |
458 | p = &commit_list_insert(pcommit, p)->next; |
459 | } | |
4c0fea0f JH |
460 | } |
461 | for (list = newlist; list; list = list->next) { | |
462 | struct commit *commit = list->item; | |
463 | commit->object.flags &= ~TMP_MARK; | |
384e99a4 JH |
464 | } |
465 | } | |
a4a88b2b LT |
466 | revs->commits = newlist; |
467 | } | |
468 | ||
ae563542 LT |
469 | static int all_flags; |
470 | static struct rev_info *all_revs; | |
471 | ||
472 | static int handle_one_ref(const char *path, const unsigned char *sha1) | |
473 | { | |
cd2bdc53 LT |
474 | struct object *object = get_reference(all_revs, path, sha1, all_flags); |
475 | add_pending_object(all_revs, object, ""); | |
ae563542 LT |
476 | return 0; |
477 | } | |
478 | ||
479 | static void handle_all(struct rev_info *revs, unsigned flags) | |
480 | { | |
481 | all_revs = revs; | |
482 | all_flags = flags; | |
483 | for_each_ref(handle_one_ref); | |
484 | } | |
485 | ||
ea4a19e1 JH |
486 | static int add_parents_only(struct rev_info *revs, const char *arg, int flags) |
487 | { | |
488 | unsigned char sha1[20]; | |
489 | struct object *it; | |
490 | struct commit *commit; | |
491 | struct commit_list *parents; | |
492 | ||
493 | if (*arg == '^') { | |
494 | flags ^= UNINTERESTING; | |
495 | arg++; | |
496 | } | |
497 | if (get_sha1(arg, sha1)) | |
498 | return 0; | |
499 | while (1) { | |
500 | it = get_reference(revs, arg, sha1, 0); | |
885a86ab | 501 | if (it->type != TYPE_TAG) |
ea4a19e1 JH |
502 | break; |
503 | memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20); | |
504 | } | |
885a86ab | 505 | if (it->type != TYPE_COMMIT) |
ea4a19e1 JH |
506 | return 0; |
507 | commit = (struct commit *)it; | |
508 | for (parents = commit->parents; parents; parents = parents->next) { | |
509 | it = &parents->item->object; | |
510 | it->flags |= flags; | |
511 | add_pending_object(revs, it, arg); | |
512 | } | |
513 | return 1; | |
514 | } | |
515 | ||
8efdc326 FK |
516 | void init_revisions(struct rev_info *revs) |
517 | { | |
518 | memset(revs, 0, sizeof(*revs)); | |
8e8f9987 | 519 | |
6b9c58f4 | 520 | revs->abbrev = DEFAULT_ABBREV; |
8e8f9987 | 521 | revs->ignore_merges = 1; |
9202434c | 522 | revs->simplify_history = 1; |
cd2bdc53 LT |
523 | revs->pruning.recursive = 1; |
524 | revs->pruning.add_remove = file_add_remove; | |
525 | revs->pruning.change = file_change; | |
8efdc326 FK |
526 | revs->lifo = 1; |
527 | revs->dense = 1; | |
528 | revs->prefix = setup_git_directory(); | |
529 | revs->max_age = -1; | |
530 | revs->min_age = -1; | |
531 | revs->max_count = -1; | |
532 | ||
533 | revs->prune_fn = NULL; | |
534 | revs->prune_data = NULL; | |
535 | ||
536 | revs->topo_setter = topo_sort_default_setter; | |
537 | revs->topo_getter = topo_sort_default_getter; | |
cd2bdc53 | 538 | |
cd2bdc53 LT |
539 | revs->commit_format = CMIT_FMT_DEFAULT; |
540 | ||
541 | diff_setup(&revs->diffopt); | |
8efdc326 FK |
542 | } |
543 | ||
ae563542 LT |
544 | /* |
545 | * Parse revision information, filling in the "rev_info" structure, | |
546 | * and removing the used arguments from the argument list. | |
547 | * | |
765ac8ec LT |
548 | * Returns the number of arguments left that weren't recognized |
549 | * (which are also moved to the head of the argument list) | |
ae563542 | 550 | */ |
a4a88b2b | 551 | int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def) |
ae563542 LT |
552 | { |
553 | int i, flags, seen_dashdash; | |
765ac8ec | 554 | const char **unrecognized = argv + 1; |
ae563542 LT |
555 | int left = 1; |
556 | ||
ae563542 LT |
557 | /* First, search for "--" */ |
558 | seen_dashdash = 0; | |
559 | for (i = 1; i < argc; i++) { | |
560 | const char *arg = argv[i]; | |
561 | if (strcmp(arg, "--")) | |
562 | continue; | |
563 | argv[i] = NULL; | |
564 | argc = i; | |
8efdc326 | 565 | revs->prune_data = get_pathspec(revs->prefix, argv + i + 1); |
ae563542 LT |
566 | seen_dashdash = 1; |
567 | break; | |
568 | } | |
569 | ||
570 | flags = 0; | |
571 | for (i = 1; i < argc; i++) { | |
cd2bdc53 | 572 | struct object *object; |
ae563542 LT |
573 | const char *arg = argv[i]; |
574 | unsigned char sha1[20]; | |
575 | char *dotdot; | |
576 | int local_flags; | |
577 | ||
578 | if (*arg == '-') { | |
cd2bdc53 | 579 | int opts; |
ae563542 LT |
580 | if (!strncmp(arg, "--max-count=", 12)) { |
581 | revs->max_count = atoi(arg + 12); | |
582 | continue; | |
583 | } | |
de5f2bf3 | 584 | /* accept -<digit>, like traditional "head" */ |
64bc6e3d JH |
585 | if ((*arg == '-') && isdigit(arg[1])) { |
586 | revs->max_count = atoi(arg + 1); | |
587 | continue; | |
588 | } | |
589 | if (!strcmp(arg, "-n")) { | |
590 | if (argc <= i + 1) | |
591 | die("-n requires an argument"); | |
592 | revs->max_count = atoi(argv[++i]); | |
593 | continue; | |
594 | } | |
595 | if (!strncmp(arg,"-n",2)) { | |
596 | revs->max_count = atoi(arg + 2); | |
597 | continue; | |
598 | } | |
ae563542 LT |
599 | if (!strncmp(arg, "--max-age=", 10)) { |
600 | revs->max_age = atoi(arg + 10); | |
ae563542 LT |
601 | continue; |
602 | } | |
fd751667 JH |
603 | if (!strncmp(arg, "--since=", 8)) { |
604 | revs->max_age = approxidate(arg + 8); | |
fd751667 JH |
605 | continue; |
606 | } | |
607 | if (!strncmp(arg, "--after=", 8)) { | |
608 | revs->max_age = approxidate(arg + 8); | |
53069686 JH |
609 | continue; |
610 | } | |
611 | if (!strncmp(arg, "--min-age=", 10)) { | |
612 | revs->min_age = atoi(arg + 10); | |
fd751667 JH |
613 | continue; |
614 | } | |
615 | if (!strncmp(arg, "--before=", 9)) { | |
616 | revs->min_age = approxidate(arg + 9); | |
fd751667 JH |
617 | continue; |
618 | } | |
619 | if (!strncmp(arg, "--until=", 8)) { | |
620 | revs->min_age = approxidate(arg + 8); | |
fd751667 JH |
621 | continue; |
622 | } | |
ae563542 LT |
623 | if (!strcmp(arg, "--all")) { |
624 | handle_all(revs, flags); | |
625 | continue; | |
626 | } | |
627 | if (!strcmp(arg, "--not")) { | |
628 | flags ^= UNINTERESTING; | |
629 | continue; | |
630 | } | |
631 | if (!strcmp(arg, "--default")) { | |
632 | if (++i >= argc) | |
633 | die("bad --default argument"); | |
634 | def = argv[i]; | |
635 | continue; | |
636 | } | |
637 | if (!strcmp(arg, "--topo-order")) { | |
638 | revs->topo_order = 1; | |
639 | continue; | |
640 | } | |
641 | if (!strcmp(arg, "--date-order")) { | |
642 | revs->lifo = 0; | |
643 | revs->topo_order = 1; | |
644 | continue; | |
645 | } | |
7b0c9966 LT |
646 | if (!strcmp(arg, "--parents")) { |
647 | revs->parents = 1; | |
648 | continue; | |
649 | } | |
ae563542 LT |
650 | if (!strcmp(arg, "--dense")) { |
651 | revs->dense = 1; | |
652 | continue; | |
653 | } | |
654 | if (!strcmp(arg, "--sparse")) { | |
655 | revs->dense = 0; | |
656 | continue; | |
657 | } | |
658 | if (!strcmp(arg, "--remove-empty")) { | |
659 | revs->remove_empty_trees = 1; | |
660 | continue; | |
661 | } | |
5cdeae71 | 662 | if (!strcmp(arg, "--no-merges")) { |
765ac8ec LT |
663 | revs->no_merges = 1; |
664 | continue; | |
665 | } | |
384e99a4 JH |
666 | if (!strcmp(arg, "--boundary")) { |
667 | revs->boundary = 1; | |
668 | continue; | |
669 | } | |
ae563542 LT |
670 | if (!strcmp(arg, "--objects")) { |
671 | revs->tag_objects = 1; | |
672 | revs->tree_objects = 1; | |
673 | revs->blob_objects = 1; | |
674 | continue; | |
675 | } | |
676 | if (!strcmp(arg, "--objects-edge")) { | |
677 | revs->tag_objects = 1; | |
678 | revs->tree_objects = 1; | |
679 | revs->blob_objects = 1; | |
680 | revs->edge_hint = 1; | |
681 | continue; | |
682 | } | |
d9a83684 LT |
683 | if (!strcmp(arg, "--unpacked")) { |
684 | revs->unpacked = 1; | |
d9a83684 LT |
685 | continue; |
686 | } | |
cd2bdc53 LT |
687 | if (!strcmp(arg, "-r")) { |
688 | revs->diff = 1; | |
689 | revs->diffopt.recursive = 1; | |
690 | continue; | |
691 | } | |
692 | if (!strcmp(arg, "-t")) { | |
693 | revs->diff = 1; | |
694 | revs->diffopt.recursive = 1; | |
695 | revs->diffopt.tree_in_recursive = 1; | |
696 | continue; | |
697 | } | |
698 | if (!strcmp(arg, "-m")) { | |
699 | revs->ignore_merges = 0; | |
700 | continue; | |
701 | } | |
702 | if (!strcmp(arg, "-c")) { | |
703 | revs->diff = 1; | |
0fe7c1de | 704 | revs->dense_combined_merges = 0; |
cd2bdc53 LT |
705 | revs->combine_merges = 1; |
706 | continue; | |
707 | } | |
708 | if (!strcmp(arg, "--cc")) { | |
709 | revs->diff = 1; | |
710 | revs->dense_combined_merges = 1; | |
711 | revs->combine_merges = 1; | |
712 | continue; | |
713 | } | |
714 | if (!strcmp(arg, "-v")) { | |
715 | revs->verbose_header = 1; | |
cd2bdc53 LT |
716 | continue; |
717 | } | |
718 | if (!strncmp(arg, "--pretty", 8)) { | |
719 | revs->verbose_header = 1; | |
cd2bdc53 LT |
720 | revs->commit_format = get_commit_format(arg+8); |
721 | continue; | |
722 | } | |
723 | if (!strcmp(arg, "--root")) { | |
724 | revs->show_root_diff = 1; | |
725 | continue; | |
726 | } | |
727 | if (!strcmp(arg, "--no-commit-id")) { | |
728 | revs->no_commit_id = 1; | |
729 | continue; | |
730 | } | |
731 | if (!strcmp(arg, "--always")) { | |
732 | revs->always_show_header = 1; | |
733 | continue; | |
734 | } | |
735 | if (!strcmp(arg, "--no-abbrev")) { | |
736 | revs->abbrev = 0; | |
737 | continue; | |
738 | } | |
739 | if (!strcmp(arg, "--abbrev")) { | |
740 | revs->abbrev = DEFAULT_ABBREV; | |
741 | continue; | |
742 | } | |
508d9e37 LT |
743 | if (!strncmp(arg, "--abbrev=", 9)) { |
744 | revs->abbrev = strtoul(arg + 9, NULL, 10); | |
745 | if (revs->abbrev < MINIMUM_ABBREV) | |
746 | revs->abbrev = MINIMUM_ABBREV; | |
747 | else if (revs->abbrev > 40) | |
748 | revs->abbrev = 40; | |
749 | continue; | |
750 | } | |
cd2bdc53 LT |
751 | if (!strcmp(arg, "--abbrev-commit")) { |
752 | revs->abbrev_commit = 1; | |
753 | continue; | |
754 | } | |
755 | if (!strcmp(arg, "--full-diff")) { | |
756 | revs->diff = 1; | |
757 | revs->full_diff = 1; | |
758 | continue; | |
759 | } | |
9202434c LT |
760 | if (!strcmp(arg, "--full-history")) { |
761 | revs->simplify_history = 0; | |
762 | continue; | |
763 | } | |
cd2bdc53 LT |
764 | opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i); |
765 | if (opts > 0) { | |
766 | revs->diff = 1; | |
767 | i += opts - 1; | |
768 | continue; | |
769 | } | |
ae563542 LT |
770 | *unrecognized++ = arg; |
771 | left++; | |
772 | continue; | |
773 | } | |
774 | dotdot = strstr(arg, ".."); | |
775 | if (dotdot) { | |
776 | unsigned char from_sha1[20]; | |
0c8b106b JH |
777 | const char *next = dotdot + 2; |
778 | const char *this = arg; | |
ae563542 LT |
779 | *dotdot = 0; |
780 | if (!*next) | |
0c8b106b | 781 | next = "HEAD"; |
ce4a7063 | 782 | if (dotdot == arg) |
0c8b106b | 783 | this = "HEAD"; |
ce4a7063 JH |
784 | if (!get_sha1(this, from_sha1) && |
785 | !get_sha1(next, sha1)) { | |
cd2bdc53 LT |
786 | struct object *exclude; |
787 | struct object *include; | |
ae563542 | 788 | |
cd2bdc53 LT |
789 | exclude = get_reference(revs, this, from_sha1, flags ^ UNINTERESTING); |
790 | include = get_reference(revs, next, sha1, flags); | |
ae563542 LT |
791 | if (!exclude || !include) |
792 | die("Invalid revision range %s..%s", arg, next); | |
ea92f41f JH |
793 | |
794 | if (!seen_dashdash) { | |
795 | *dotdot = '.'; | |
796 | verify_non_filename(revs->prefix, arg); | |
797 | } | |
cd2bdc53 LT |
798 | add_pending_object(revs, exclude, this); |
799 | add_pending_object(revs, include, next); | |
ae563542 LT |
800 | continue; |
801 | } | |
802 | *dotdot = '.'; | |
803 | } | |
ea4a19e1 JH |
804 | dotdot = strstr(arg, "^@"); |
805 | if (dotdot && !dotdot[2]) { | |
806 | *dotdot = 0; | |
807 | if (add_parents_only(revs, arg, flags)) | |
808 | continue; | |
809 | *dotdot = '^'; | |
810 | } | |
ae563542 LT |
811 | local_flags = 0; |
812 | if (*arg == '^') { | |
813 | local_flags = UNINTERESTING; | |
814 | arg++; | |
815 | } | |
31fff305 | 816 | if (get_sha1(arg, sha1)) { |
ae563542 LT |
817 | int j; |
818 | ||
819 | if (seen_dashdash || local_flags) | |
820 | die("bad revision '%s'", arg); | |
821 | ||
ea92f41f JH |
822 | /* If we didn't have a "--": |
823 | * (1) all filenames must exist; | |
824 | * (2) all rev-args must not be interpretable | |
825 | * as a valid filename. | |
826 | * but the latter we have checked in the main loop. | |
827 | */ | |
e23d0b4a LT |
828 | for (j = i; j < argc; j++) |
829 | verify_filename(revs->prefix, argv[j]); | |
830 | ||
8efdc326 | 831 | revs->prune_data = get_pathspec(revs->prefix, argv + i); |
ae563542 LT |
832 | break; |
833 | } | |
ea92f41f JH |
834 | if (!seen_dashdash) |
835 | verify_non_filename(revs->prefix, arg); | |
cd2bdc53 LT |
836 | object = get_reference(revs, arg, sha1, flags ^ local_flags); |
837 | add_pending_object(revs, object, arg); | |
ae563542 | 838 | } |
cd2bdc53 | 839 | if (def && !revs->pending_objects) { |
ae563542 | 840 | unsigned char sha1[20]; |
cd2bdc53 | 841 | struct object *object; |
31fff305 | 842 | if (get_sha1(def, sha1)) |
ae563542 | 843 | die("bad default revision '%s'", def); |
cd2bdc53 LT |
844 | object = get_reference(revs, def, sha1, 0); |
845 | add_pending_object(revs, object, def); | |
ae563542 | 846 | } |
8efdc326 | 847 | |
bbbc8c3a | 848 | if (revs->topo_order || revs->unpacked) |
53069686 JH |
849 | revs->limited = 1; |
850 | ||
8efdc326 | 851 | if (revs->prune_data) { |
cd2bdc53 | 852 | diff_tree_setup_paths(revs->prune_data, &revs->pruning); |
8efdc326 | 853 | revs->prune_fn = try_to_simplify_commit; |
cd2bdc53 LT |
854 | if (!revs->full_diff) |
855 | diff_tree_setup_paths(revs->prune_data, &revs->diffopt); | |
8efdc326 | 856 | } |
cd2bdc53 LT |
857 | if (revs->combine_merges) { |
858 | revs->ignore_merges = 0; | |
96ab4f4e JH |
859 | if (revs->dense_combined_merges && |
860 | (revs->diffopt.output_format != DIFF_FORMAT_DIFFSTAT)) | |
cd2bdc53 LT |
861 | revs->diffopt.output_format = DIFF_FORMAT_PATCH; |
862 | } | |
cd2bdc53 LT |
863 | revs->diffopt.abbrev = revs->abbrev; |
864 | diff_setup_done(&revs->diffopt); | |
8efdc326 | 865 | |
ae563542 LT |
866 | return left; |
867 | } | |
a4a88b2b LT |
868 | |
869 | void prepare_revision_walk(struct rev_info *revs) | |
870 | { | |
cd2bdc53 LT |
871 | struct object_list *list; |
872 | ||
873 | list = revs->pending_objects; | |
874 | revs->pending_objects = NULL; | |
875 | while (list) { | |
876 | struct commit *commit = handle_commit(revs, list->item, list->name); | |
877 | if (commit) { | |
878 | if (!(commit->object.flags & SEEN)) { | |
879 | commit->object.flags |= SEEN; | |
880 | insert_by_date(commit, &revs->commits); | |
881 | } | |
882 | } | |
883 | list = list->next; | |
884 | } | |
885 | ||
ba1d4505 LT |
886 | if (revs->no_walk) |
887 | return; | |
a4a88b2b LT |
888 | if (revs->limited) |
889 | limit_list(revs); | |
890 | if (revs->topo_order) | |
8efdc326 FK |
891 | sort_in_topological_order_fn(&revs->commits, revs->lifo, |
892 | revs->topo_setter, | |
893 | revs->topo_getter); | |
a4a88b2b LT |
894 | } |
895 | ||
3381c790 | 896 | static int rewrite_one(struct rev_info *revs, struct commit **pp) |
765ac8ec LT |
897 | { |
898 | for (;;) { | |
899 | struct commit *p = *pp; | |
3381c790 LT |
900 | if (!revs->limited) |
901 | add_parents_to_list(revs, p, &revs->commits); | |
765ac8ec LT |
902 | if (p->object.flags & (TREECHANGE | UNINTERESTING)) |
903 | return 0; | |
904 | if (!p->parents) | |
905 | return -1; | |
906 | *pp = p->parents->item; | |
907 | } | |
908 | } | |
909 | ||
3381c790 | 910 | static void rewrite_parents(struct rev_info *revs, struct commit *commit) |
765ac8ec LT |
911 | { |
912 | struct commit_list **pp = &commit->parents; | |
913 | while (*pp) { | |
914 | struct commit_list *parent = *pp; | |
3381c790 | 915 | if (rewrite_one(revs, &parent->item) < 0) { |
765ac8ec LT |
916 | *pp = parent->next; |
917 | continue; | |
918 | } | |
919 | pp = &parent->next; | |
920 | } | |
921 | } | |
922 | ||
1b65a5aa JH |
923 | static void mark_boundary_to_show(struct commit *commit) |
924 | { | |
925 | struct commit_list *p = commit->parents; | |
926 | while (p) { | |
927 | commit = p->item; | |
928 | p = p->next; | |
929 | if (commit->object.flags & BOUNDARY) | |
930 | commit->object.flags |= BOUNDARY_SHOW; | |
931 | } | |
932 | } | |
933 | ||
a4a88b2b LT |
934 | struct commit *get_revision(struct rev_info *revs) |
935 | { | |
765ac8ec | 936 | struct commit_list *list = revs->commits; |
765ac8ec LT |
937 | |
938 | if (!list) | |
a4a88b2b | 939 | return NULL; |
a4a88b2b | 940 | |
765ac8ec | 941 | /* Check the max_count ... */ |
765ac8ec LT |
942 | switch (revs->max_count) { |
943 | case -1: | |
944 | break; | |
945 | case 0: | |
946 | return NULL; | |
947 | default: | |
948 | revs->max_count--; | |
949 | } | |
a4a88b2b | 950 | |
765ac8ec | 951 | do { |
ea5ed3ab LT |
952 | struct commit *commit = revs->commits->item; |
953 | ||
2a0925be LT |
954 | revs->commits = revs->commits->next; |
955 | ||
956 | /* | |
957 | * If we haven't done the list limiting, we need to look at | |
be7db6e5 LT |
958 | * the parents here. We also need to do the date-based limiting |
959 | * that we'd otherwise have done in limit_list(). | |
2a0925be | 960 | */ |
be7db6e5 | 961 | if (!revs->limited) { |
22c31bf1 JH |
962 | if ((revs->unpacked && |
963 | has_sha1_pack(commit->object.sha1)) || | |
964 | (revs->max_age != -1 && | |
965 | (commit->date < revs->max_age))) | |
be7db6e5 | 966 | continue; |
2a0925be | 967 | add_parents_to_list(revs, commit, &revs->commits); |
be7db6e5 | 968 | } |
384e99a4 | 969 | if (commit->object.flags & SHOWN) |
2a0925be | 970 | continue; |
1b65a5aa JH |
971 | |
972 | /* We want to show boundary commits only when their | |
973 | * children are shown. When path-limiter is in effect, | |
974 | * rewrite_parents() drops some commits from getting shown, | |
975 | * and there is no point showing boundary parents that | |
976 | * are not shown. After rewrite_parents() rewrites the | |
977 | * parents of a commit that is shown, we mark the boundary | |
978 | * parents with BOUNDARY_SHOW. | |
979 | */ | |
980 | if (commit->object.flags & BOUNDARY_SHOW) { | |
981 | commit->object.flags |= SHOWN; | |
982 | return commit; | |
983 | } | |
984 | if (commit->object.flags & UNINTERESTING) | |
2a0925be | 985 | continue; |
765ac8ec | 986 | if (revs->min_age != -1 && (commit->date > revs->min_age)) |
2a0925be | 987 | continue; |
384e99a4 JH |
988 | if (revs->no_merges && |
989 | commit->parents && commit->parents->next) | |
2a0925be | 990 | continue; |
8efdc326 | 991 | if (revs->prune_fn && revs->dense) { |
765ac8ec | 992 | if (!(commit->object.flags & TREECHANGE)) |
2a0925be LT |
993 | continue; |
994 | if (revs->parents) | |
3381c790 | 995 | rewrite_parents(revs, commit); |
384e99a4 | 996 | } |
1b65a5aa JH |
997 | if (revs->boundary) |
998 | mark_boundary_to_show(commit); | |
765ac8ec LT |
999 | commit->object.flags |= SHOWN; |
1000 | return commit; | |
1001 | } while (revs->commits); | |
1002 | return NULL; | |
1003 | } |