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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 | { | |
56 | struct object *obj = &tree->object; | |
57 | struct tree_entry_list *entry; | |
58 | ||
59 | if (obj->flags & UNINTERESTING) | |
60 | return; | |
61 | obj->flags |= UNINTERESTING; | |
62 | if (!has_sha1_file(obj->sha1)) | |
63 | return; | |
64 | if (parse_tree(tree) < 0) | |
65 | die("bad tree %s", sha1_to_hex(obj->sha1)); | |
66 | entry = tree->entries; | |
67 | tree->entries = NULL; | |
68 | while (entry) { | |
69 | struct tree_entry_list *next = entry->next; | |
70 | if (entry->directory) | |
71 | mark_tree_uninteresting(entry->item.tree); | |
72 | else | |
73 | mark_blob_uninteresting(entry->item.blob); | |
74 | free(entry); | |
75 | entry = next; | |
76 | } | |
77 | } | |
78 | ||
79 | void mark_parents_uninteresting(struct commit *commit) | |
80 | { | |
81 | struct commit_list *parents = commit->parents; | |
82 | ||
83 | while (parents) { | |
84 | struct commit *commit = parents->item; | |
d2c4af73 MU |
85 | if (!(commit->object.flags & UNINTERESTING)) { |
86 | commit->object.flags |= UNINTERESTING; | |
ae563542 | 87 | |
d2c4af73 MU |
88 | /* |
89 | * Normally we haven't parsed the parent | |
90 | * yet, so we won't have a parent of a parent | |
91 | * here. However, it may turn out that we've | |
92 | * reached this commit some other way (where it | |
93 | * wasn't uninteresting), in which case we need | |
94 | * to mark its parents recursively too.. | |
95 | */ | |
96 | if (commit->parents) | |
97 | mark_parents_uninteresting(commit); | |
98 | } | |
ae563542 LT |
99 | |
100 | /* | |
101 | * A missing commit is ok iff its parent is marked | |
102 | * uninteresting. | |
103 | * | |
104 | * We just mark such a thing parsed, so that when | |
105 | * it is popped next time around, we won't be trying | |
106 | * to parse it and get an error. | |
107 | */ | |
108 | if (!has_sha1_file(commit->object.sha1)) | |
109 | commit->object.parsed = 1; | |
110 | parents = parents->next; | |
111 | } | |
112 | } | |
113 | ||
114 | static void add_pending_object(struct rev_info *revs, struct object *obj, const char *name) | |
115 | { | |
116 | add_object(obj, &revs->pending_objects, NULL, name); | |
117 | } | |
118 | ||
119 | static struct commit *get_commit_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags) | |
120 | { | |
121 | struct object *object; | |
122 | ||
123 | object = parse_object(sha1); | |
124 | if (!object) | |
125 | die("bad object %s", name); | |
126 | ||
127 | /* | |
128 | * Tag object? Look what it points to.. | |
129 | */ | |
130 | while (object->type == tag_type) { | |
131 | struct tag *tag = (struct tag *) object; | |
132 | object->flags |= flags; | |
133 | if (revs->tag_objects && !(object->flags & UNINTERESTING)) | |
134 | add_pending_object(revs, object, tag->tag); | |
135 | object = parse_object(tag->tagged->sha1); | |
136 | if (!object) | |
137 | die("bad object %s", sha1_to_hex(tag->tagged->sha1)); | |
138 | } | |
139 | ||
140 | /* | |
141 | * Commit object? Just return it, we'll do all the complex | |
142 | * reachability crud. | |
143 | */ | |
144 | if (object->type == commit_type) { | |
145 | struct commit *commit = (struct commit *)object; | |
146 | object->flags |= flags; | |
147 | if (parse_commit(commit) < 0) | |
148 | die("unable to parse commit %s", name); | |
d9a83684 | 149 | if (flags & UNINTERESTING) { |
ae563542 | 150 | mark_parents_uninteresting(commit); |
d9a83684 LT |
151 | revs->limited = 1; |
152 | } | |
ae563542 LT |
153 | return commit; |
154 | } | |
155 | ||
156 | /* | |
157 | * Tree object? Either mark it uniniteresting, or add it | |
158 | * to the list of objects to look at later.. | |
159 | */ | |
160 | if (object->type == tree_type) { | |
161 | struct tree *tree = (struct tree *)object; | |
162 | if (!revs->tree_objects) | |
163 | return NULL; | |
164 | if (flags & UNINTERESTING) { | |
165 | mark_tree_uninteresting(tree); | |
166 | return NULL; | |
167 | } | |
168 | add_pending_object(revs, object, ""); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | /* | |
173 | * Blob object? You know the drill by now.. | |
174 | */ | |
175 | if (object->type == blob_type) { | |
176 | struct blob *blob = (struct blob *)object; | |
177 | if (!revs->blob_objects) | |
178 | return NULL; | |
179 | if (flags & UNINTERESTING) { | |
180 | mark_blob_uninteresting(blob); | |
181 | return NULL; | |
182 | } | |
183 | add_pending_object(revs, object, ""); | |
184 | return NULL; | |
185 | } | |
186 | die("%s is unknown object", name); | |
187 | } | |
188 | ||
a4a88b2b LT |
189 | static int everybody_uninteresting(struct commit_list *orig) |
190 | { | |
191 | struct commit_list *list = orig; | |
192 | while (list) { | |
193 | struct commit *commit = list->item; | |
194 | list = list->next; | |
195 | if (commit->object.flags & UNINTERESTING) | |
196 | continue; | |
197 | return 0; | |
198 | } | |
199 | return 1; | |
200 | } | |
201 | ||
8efdc326 | 202 | static int tree_difference = REV_TREE_SAME; |
a4a88b2b LT |
203 | |
204 | static void file_add_remove(struct diff_options *options, | |
205 | int addremove, unsigned mode, | |
206 | const unsigned char *sha1, | |
207 | const char *base, const char *path) | |
208 | { | |
8efdc326 | 209 | int diff = REV_TREE_DIFFERENT; |
a4a88b2b LT |
210 | |
211 | /* | |
8efdc326 FK |
212 | * Is it an add of a new file? It means that the old tree |
213 | * didn't have it at all, so we will turn "REV_TREE_SAME" -> | |
214 | * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone | |
215 | * (and if it already was "REV_TREE_NEW", we'll keep it | |
216 | * "REV_TREE_NEW" of course). | |
a4a88b2b LT |
217 | */ |
218 | if (addremove == '+') { | |
219 | diff = tree_difference; | |
8efdc326 | 220 | if (diff != REV_TREE_SAME) |
a4a88b2b | 221 | return; |
8efdc326 | 222 | diff = REV_TREE_NEW; |
a4a88b2b LT |
223 | } |
224 | tree_difference = diff; | |
225 | } | |
226 | ||
227 | static void file_change(struct diff_options *options, | |
228 | unsigned old_mode, unsigned new_mode, | |
229 | const unsigned char *old_sha1, | |
230 | const unsigned char *new_sha1, | |
231 | const char *base, const char *path) | |
232 | { | |
8efdc326 | 233 | tree_difference = REV_TREE_DIFFERENT; |
a4a88b2b LT |
234 | } |
235 | ||
236 | static struct diff_options diff_opt = { | |
237 | .recursive = 1, | |
238 | .add_remove = file_add_remove, | |
239 | .change = file_change, | |
240 | }; | |
241 | ||
8efdc326 | 242 | int rev_compare_tree(struct tree *t1, struct tree *t2) |
a4a88b2b LT |
243 | { |
244 | if (!t1) | |
8efdc326 | 245 | return REV_TREE_NEW; |
a4a88b2b | 246 | if (!t2) |
8efdc326 FK |
247 | return REV_TREE_DIFFERENT; |
248 | tree_difference = REV_TREE_SAME; | |
a4a88b2b | 249 | if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", &diff_opt) < 0) |
8efdc326 | 250 | return REV_TREE_DIFFERENT; |
a4a88b2b LT |
251 | return tree_difference; |
252 | } | |
253 | ||
8efdc326 | 254 | int rev_same_tree_as_empty(struct tree *t1) |
a4a88b2b LT |
255 | { |
256 | int retval; | |
257 | void *tree; | |
258 | struct tree_desc empty, real; | |
259 | ||
260 | if (!t1) | |
261 | return 0; | |
262 | ||
8e440259 | 263 | tree = read_object_with_reference(t1->object.sha1, tree_type, &real.size, NULL); |
a4a88b2b LT |
264 | if (!tree) |
265 | return 0; | |
266 | real.buf = tree; | |
267 | ||
268 | empty.buf = ""; | |
269 | empty.size = 0; | |
270 | ||
271 | tree_difference = 0; | |
272 | retval = diff_tree(&empty, &real, "", &diff_opt); | |
273 | free(tree); | |
274 | ||
275 | return retval >= 0 && !tree_difference; | |
276 | } | |
277 | ||
278 | static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) | |
279 | { | |
280 | struct commit_list **pp, *parent; | |
f3219fbb | 281 | int tree_changed = 0; |
a4a88b2b LT |
282 | |
283 | if (!commit->tree) | |
284 | return; | |
285 | ||
286 | if (!commit->parents) { | |
8efdc326 | 287 | if (!rev_same_tree_as_empty(commit->tree)) |
a4a88b2b LT |
288 | commit->object.flags |= TREECHANGE; |
289 | return; | |
290 | } | |
291 | ||
292 | pp = &commit->parents; | |
293 | while ((parent = *pp) != NULL) { | |
294 | struct commit *p = parent->item; | |
295 | ||
a4a88b2b | 296 | parse_commit(p); |
8efdc326 FK |
297 | switch (rev_compare_tree(p->tree, commit->tree)) { |
298 | case REV_TREE_SAME: | |
f3219fbb JH |
299 | if (p->object.flags & UNINTERESTING) { |
300 | /* Even if a merge with an uninteresting | |
301 | * side branch brought the entire change | |
302 | * we are interested in, we do not want | |
303 | * to lose the other branches of this | |
304 | * merge, so we just keep going. | |
305 | */ | |
306 | pp = &parent->next; | |
307 | continue; | |
308 | } | |
a4a88b2b LT |
309 | parent->next = NULL; |
310 | commit->parents = parent; | |
311 | return; | |
312 | ||
8efdc326 FK |
313 | case REV_TREE_NEW: |
314 | if (revs->remove_empty_trees && | |
315 | rev_same_tree_as_empty(p->tree)) { | |
c348f31a JH |
316 | /* We are adding all the specified |
317 | * paths from this parent, so the | |
318 | * history beyond this parent is not | |
319 | * interesting. Remove its parents | |
320 | * (they are grandparents for us). | |
321 | * IOW, we pretend this parent is a | |
322 | * "root" commit. | |
a41e109c | 323 | */ |
c348f31a JH |
324 | parse_commit(p); |
325 | p->parents = NULL; | |
a4a88b2b LT |
326 | } |
327 | /* fallthrough */ | |
8efdc326 | 328 | case REV_TREE_DIFFERENT: |
f3219fbb | 329 | tree_changed = 1; |
a4a88b2b LT |
330 | pp = &parent->next; |
331 | continue; | |
332 | } | |
333 | die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1)); | |
334 | } | |
f3219fbb JH |
335 | if (tree_changed) |
336 | commit->object.flags |= TREECHANGE; | |
a4a88b2b LT |
337 | } |
338 | ||
339 | static void add_parents_to_list(struct rev_info *revs, struct commit *commit, struct commit_list **list) | |
340 | { | |
341 | struct commit_list *parent = commit->parents; | |
342 | ||
343 | /* | |
344 | * If the commit is uninteresting, don't try to | |
345 | * prune parents - we want the maximal uninteresting | |
346 | * set. | |
347 | * | |
348 | * Normally we haven't parsed the parent | |
349 | * yet, so we won't have a parent of a parent | |
350 | * here. However, it may turn out that we've | |
351 | * reached this commit some other way (where it | |
352 | * wasn't uninteresting), in which case we need | |
353 | * to mark its parents recursively too.. | |
354 | */ | |
355 | if (commit->object.flags & UNINTERESTING) { | |
356 | while (parent) { | |
357 | struct commit *p = parent->item; | |
358 | parent = parent->next; | |
359 | parse_commit(p); | |
360 | p->object.flags |= UNINTERESTING; | |
361 | if (p->parents) | |
362 | mark_parents_uninteresting(p); | |
363 | if (p->object.flags & SEEN) | |
364 | continue; | |
365 | p->object.flags |= SEEN; | |
366 | insert_by_date(p, list); | |
367 | } | |
368 | return; | |
369 | } | |
370 | ||
371 | /* | |
372 | * Ok, the commit wasn't uninteresting. Try to | |
373 | * simplify the commit history and find the parent | |
374 | * that has no differences in the path set if one exists. | |
375 | */ | |
8efdc326 FK |
376 | if (revs->prune_fn) |
377 | revs->prune_fn(revs, commit); | |
a4a88b2b LT |
378 | |
379 | parent = commit->parents; | |
380 | while (parent) { | |
381 | struct commit *p = parent->item; | |
382 | ||
383 | parent = parent->next; | |
384 | ||
385 | parse_commit(p); | |
386 | if (p->object.flags & SEEN) | |
387 | continue; | |
388 | p->object.flags |= SEEN; | |
389 | insert_by_date(p, list); | |
390 | } | |
391 | } | |
392 | ||
393 | static void limit_list(struct rev_info *revs) | |
394 | { | |
395 | struct commit_list *list = revs->commits; | |
396 | struct commit_list *newlist = NULL; | |
397 | struct commit_list **p = &newlist; | |
398 | ||
399 | while (list) { | |
400 | struct commit_list *entry = list; | |
401 | struct commit *commit = list->item; | |
402 | struct object *obj = &commit->object; | |
403 | ||
404 | list = list->next; | |
405 | free(entry); | |
406 | ||
407 | if (revs->max_age != -1 && (commit->date < revs->max_age)) | |
408 | obj->flags |= UNINTERESTING; | |
409 | if (revs->unpacked && has_sha1_pack(obj->sha1)) | |
410 | obj->flags |= UNINTERESTING; | |
411 | add_parents_to_list(revs, commit, &list); | |
412 | if (obj->flags & UNINTERESTING) { | |
413 | mark_parents_uninteresting(commit); | |
414 | if (everybody_uninteresting(list)) | |
415 | break; | |
416 | continue; | |
417 | } | |
418 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
419 | continue; | |
420 | p = &commit_list_insert(commit, p)->next; | |
421 | } | |
384e99a4 | 422 | if (revs->boundary) { |
4c0fea0f JH |
423 | /* mark the ones that are on the result list first */ |
424 | for (list = newlist; list; list = list->next) { | |
425 | struct commit *commit = list->item; | |
426 | commit->object.flags |= TMP_MARK; | |
427 | } | |
428 | for (list = newlist; list; list = list->next) { | |
384e99a4 JH |
429 | struct commit *commit = list->item; |
430 | struct object *obj = &commit->object; | |
4c0fea0f JH |
431 | struct commit_list *parent; |
432 | if (obj->flags & UNINTERESTING) | |
384e99a4 | 433 | continue; |
4c0fea0f JH |
434 | for (parent = commit->parents; |
435 | parent; | |
436 | parent = parent->next) { | |
384e99a4 | 437 | struct commit *pcommit = parent->item; |
384e99a4 JH |
438 | if (!(pcommit->object.flags & UNINTERESTING)) |
439 | continue; | |
440 | pcommit->object.flags |= BOUNDARY; | |
4c0fea0f JH |
441 | if (pcommit->object.flags & TMP_MARK) |
442 | continue; | |
443 | pcommit->object.flags |= TMP_MARK; | |
384e99a4 JH |
444 | p = &commit_list_insert(pcommit, p)->next; |
445 | } | |
4c0fea0f JH |
446 | } |
447 | for (list = newlist; list; list = list->next) { | |
448 | struct commit *commit = list->item; | |
449 | commit->object.flags &= ~TMP_MARK; | |
384e99a4 JH |
450 | } |
451 | } | |
a4a88b2b LT |
452 | revs->commits = newlist; |
453 | } | |
454 | ||
ae563542 LT |
455 | static void add_one_commit(struct commit *commit, struct rev_info *revs) |
456 | { | |
457 | if (!commit || (commit->object.flags & SEEN)) | |
458 | return; | |
459 | commit->object.flags |= SEEN; | |
460 | commit_list_insert(commit, &revs->commits); | |
461 | } | |
462 | ||
463 | static int all_flags; | |
464 | static struct rev_info *all_revs; | |
465 | ||
466 | static int handle_one_ref(const char *path, const unsigned char *sha1) | |
467 | { | |
468 | struct commit *commit = get_commit_reference(all_revs, path, sha1, all_flags); | |
469 | add_one_commit(commit, all_revs); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static void handle_all(struct rev_info *revs, unsigned flags) | |
474 | { | |
475 | all_revs = revs; | |
476 | all_flags = flags; | |
477 | for_each_ref(handle_one_ref); | |
478 | } | |
479 | ||
8efdc326 FK |
480 | void init_revisions(struct rev_info *revs) |
481 | { | |
482 | memset(revs, 0, sizeof(*revs)); | |
483 | revs->lifo = 1; | |
484 | revs->dense = 1; | |
485 | revs->prefix = setup_git_directory(); | |
486 | revs->max_age = -1; | |
487 | revs->min_age = -1; | |
488 | revs->max_count = -1; | |
489 | ||
490 | revs->prune_fn = NULL; | |
491 | revs->prune_data = NULL; | |
492 | ||
493 | revs->topo_setter = topo_sort_default_setter; | |
494 | revs->topo_getter = topo_sort_default_getter; | |
495 | } | |
496 | ||
ae563542 LT |
497 | /* |
498 | * Parse revision information, filling in the "rev_info" structure, | |
499 | * and removing the used arguments from the argument list. | |
500 | * | |
765ac8ec LT |
501 | * Returns the number of arguments left that weren't recognized |
502 | * (which are also moved to the head of the argument list) | |
ae563542 | 503 | */ |
a4a88b2b | 504 | int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def) |
ae563542 LT |
505 | { |
506 | int i, flags, seen_dashdash; | |
765ac8ec | 507 | const char **unrecognized = argv + 1; |
ae563542 LT |
508 | int left = 1; |
509 | ||
8efdc326 | 510 | init_revisions(revs); |
ae563542 LT |
511 | |
512 | /* First, search for "--" */ | |
513 | seen_dashdash = 0; | |
514 | for (i = 1; i < argc; i++) { | |
515 | const char *arg = argv[i]; | |
516 | if (strcmp(arg, "--")) | |
517 | continue; | |
518 | argv[i] = NULL; | |
519 | argc = i; | |
8efdc326 | 520 | revs->prune_data = get_pathspec(revs->prefix, argv + i + 1); |
ae563542 LT |
521 | seen_dashdash = 1; |
522 | break; | |
523 | } | |
524 | ||
525 | flags = 0; | |
526 | for (i = 1; i < argc; i++) { | |
527 | struct commit *commit; | |
528 | const char *arg = argv[i]; | |
529 | unsigned char sha1[20]; | |
530 | char *dotdot; | |
531 | int local_flags; | |
532 | ||
533 | if (*arg == '-') { | |
534 | if (!strncmp(arg, "--max-count=", 12)) { | |
535 | revs->max_count = atoi(arg + 12); | |
536 | continue; | |
537 | } | |
64bc6e3d JH |
538 | /* accept -<digit>, like traditilnal "head" */ |
539 | if ((*arg == '-') && isdigit(arg[1])) { | |
540 | revs->max_count = atoi(arg + 1); | |
541 | continue; | |
542 | } | |
543 | if (!strcmp(arg, "-n")) { | |
544 | if (argc <= i + 1) | |
545 | die("-n requires an argument"); | |
546 | revs->max_count = atoi(argv[++i]); | |
547 | continue; | |
548 | } | |
549 | if (!strncmp(arg,"-n",2)) { | |
550 | revs->max_count = atoi(arg + 2); | |
551 | continue; | |
552 | } | |
ae563542 LT |
553 | if (!strncmp(arg, "--max-age=", 10)) { |
554 | revs->max_age = atoi(arg + 10); | |
ae563542 LT |
555 | continue; |
556 | } | |
fd751667 JH |
557 | if (!strncmp(arg, "--since=", 8)) { |
558 | revs->max_age = approxidate(arg + 8); | |
fd751667 JH |
559 | continue; |
560 | } | |
561 | if (!strncmp(arg, "--after=", 8)) { | |
562 | revs->max_age = approxidate(arg + 8); | |
53069686 JH |
563 | continue; |
564 | } | |
565 | if (!strncmp(arg, "--min-age=", 10)) { | |
566 | revs->min_age = atoi(arg + 10); | |
fd751667 JH |
567 | continue; |
568 | } | |
569 | if (!strncmp(arg, "--before=", 9)) { | |
570 | revs->min_age = approxidate(arg + 9); | |
fd751667 JH |
571 | continue; |
572 | } | |
573 | if (!strncmp(arg, "--until=", 8)) { | |
574 | revs->min_age = approxidate(arg + 8); | |
fd751667 JH |
575 | continue; |
576 | } | |
ae563542 LT |
577 | if (!strcmp(arg, "--all")) { |
578 | handle_all(revs, flags); | |
579 | continue; | |
580 | } | |
581 | if (!strcmp(arg, "--not")) { | |
582 | flags ^= UNINTERESTING; | |
583 | continue; | |
584 | } | |
585 | if (!strcmp(arg, "--default")) { | |
586 | if (++i >= argc) | |
587 | die("bad --default argument"); | |
588 | def = argv[i]; | |
589 | continue; | |
590 | } | |
591 | if (!strcmp(arg, "--topo-order")) { | |
592 | revs->topo_order = 1; | |
593 | continue; | |
594 | } | |
595 | if (!strcmp(arg, "--date-order")) { | |
596 | revs->lifo = 0; | |
597 | revs->topo_order = 1; | |
598 | continue; | |
599 | } | |
7b0c9966 LT |
600 | if (!strcmp(arg, "--parents")) { |
601 | revs->parents = 1; | |
602 | continue; | |
603 | } | |
ae563542 LT |
604 | if (!strcmp(arg, "--dense")) { |
605 | revs->dense = 1; | |
606 | continue; | |
607 | } | |
608 | if (!strcmp(arg, "--sparse")) { | |
609 | revs->dense = 0; | |
610 | continue; | |
611 | } | |
612 | if (!strcmp(arg, "--remove-empty")) { | |
613 | revs->remove_empty_trees = 1; | |
614 | continue; | |
615 | } | |
5cdeae71 | 616 | if (!strcmp(arg, "--no-merges")) { |
765ac8ec LT |
617 | revs->no_merges = 1; |
618 | continue; | |
619 | } | |
384e99a4 JH |
620 | if (!strcmp(arg, "--boundary")) { |
621 | revs->boundary = 1; | |
622 | continue; | |
623 | } | |
ae563542 LT |
624 | if (!strcmp(arg, "--objects")) { |
625 | revs->tag_objects = 1; | |
626 | revs->tree_objects = 1; | |
627 | revs->blob_objects = 1; | |
628 | continue; | |
629 | } | |
630 | if (!strcmp(arg, "--objects-edge")) { | |
631 | revs->tag_objects = 1; | |
632 | revs->tree_objects = 1; | |
633 | revs->blob_objects = 1; | |
634 | revs->edge_hint = 1; | |
635 | continue; | |
636 | } | |
d9a83684 LT |
637 | if (!strcmp(arg, "--unpacked")) { |
638 | revs->unpacked = 1; | |
d9a83684 LT |
639 | continue; |
640 | } | |
ae563542 LT |
641 | *unrecognized++ = arg; |
642 | left++; | |
643 | continue; | |
644 | } | |
645 | dotdot = strstr(arg, ".."); | |
646 | if (dotdot) { | |
647 | unsigned char from_sha1[20]; | |
0c8b106b JH |
648 | const char *next = dotdot + 2; |
649 | const char *this = arg; | |
ae563542 LT |
650 | *dotdot = 0; |
651 | if (!*next) | |
0c8b106b | 652 | next = "HEAD"; |
ce4a7063 | 653 | if (dotdot == arg) |
0c8b106b | 654 | this = "HEAD"; |
ce4a7063 JH |
655 | if (!get_sha1(this, from_sha1) && |
656 | !get_sha1(next, sha1)) { | |
ae563542 LT |
657 | struct commit *exclude; |
658 | struct commit *include; | |
659 | ||
ce4a7063 | 660 | exclude = get_commit_reference(revs, this, from_sha1, flags ^ UNINTERESTING); |
ae563542 LT |
661 | include = get_commit_reference(revs, next, sha1, flags); |
662 | if (!exclude || !include) | |
663 | die("Invalid revision range %s..%s", arg, next); | |
664 | add_one_commit(exclude, revs); | |
665 | add_one_commit(include, revs); | |
666 | continue; | |
667 | } | |
668 | *dotdot = '.'; | |
669 | } | |
670 | local_flags = 0; | |
671 | if (*arg == '^') { | |
672 | local_flags = UNINTERESTING; | |
673 | arg++; | |
674 | } | |
675 | if (get_sha1(arg, sha1) < 0) { | |
676 | struct stat st; | |
677 | int j; | |
678 | ||
679 | if (seen_dashdash || local_flags) | |
680 | die("bad revision '%s'", arg); | |
681 | ||
682 | /* If we didn't have a "--", all filenames must exist */ | |
683 | for (j = i; j < argc; j++) { | |
684 | if (lstat(argv[j], &st) < 0) | |
fb18a2ed | 685 | die("'%s': %s", argv[j], strerror(errno)); |
ae563542 | 686 | } |
8efdc326 | 687 | revs->prune_data = get_pathspec(revs->prefix, argv + i); |
ae563542 LT |
688 | break; |
689 | } | |
690 | commit = get_commit_reference(revs, arg, sha1, flags ^ local_flags); | |
691 | add_one_commit(commit, revs); | |
692 | } | |
693 | if (def && !revs->commits) { | |
694 | unsigned char sha1[20]; | |
695 | struct commit *commit; | |
696 | if (get_sha1(def, sha1) < 0) | |
697 | die("bad default revision '%s'", def); | |
698 | commit = get_commit_reference(revs, def, sha1, 0); | |
699 | add_one_commit(commit, revs); | |
700 | } | |
8efdc326 | 701 | |
bbbc8c3a | 702 | if (revs->topo_order || revs->unpacked) |
53069686 JH |
703 | revs->limited = 1; |
704 | ||
8efdc326 FK |
705 | if (revs->prune_data) { |
706 | diff_tree_setup_paths(revs->prune_data); | |
707 | revs->prune_fn = try_to_simplify_commit; | |
2a0925be LT |
708 | |
709 | /* | |
710 | * If we fix up parent data, we currently cannot | |
711 | * do that on-the-fly. | |
712 | */ | |
713 | if (revs->parents) | |
714 | revs->limited = 1; | |
8efdc326 FK |
715 | } |
716 | ||
ae563542 LT |
717 | return left; |
718 | } | |
a4a88b2b LT |
719 | |
720 | void prepare_revision_walk(struct rev_info *revs) | |
721 | { | |
a4a88b2b LT |
722 | sort_by_date(&revs->commits); |
723 | if (revs->limited) | |
724 | limit_list(revs); | |
725 | if (revs->topo_order) | |
8efdc326 FK |
726 | sort_in_topological_order_fn(&revs->commits, revs->lifo, |
727 | revs->topo_setter, | |
728 | revs->topo_getter); | |
a4a88b2b LT |
729 | } |
730 | ||
765ac8ec LT |
731 | static int rewrite_one(struct commit **pp) |
732 | { | |
733 | for (;;) { | |
734 | struct commit *p = *pp; | |
735 | if (p->object.flags & (TREECHANGE | UNINTERESTING)) | |
736 | return 0; | |
737 | if (!p->parents) | |
738 | return -1; | |
739 | *pp = p->parents->item; | |
740 | } | |
741 | } | |
742 | ||
743 | static void rewrite_parents(struct commit *commit) | |
744 | { | |
745 | struct commit_list **pp = &commit->parents; | |
746 | while (*pp) { | |
747 | struct commit_list *parent = *pp; | |
748 | if (rewrite_one(&parent->item) < 0) { | |
749 | *pp = parent->next; | |
750 | continue; | |
751 | } | |
752 | pp = &parent->next; | |
753 | } | |
754 | } | |
755 | ||
a4a88b2b LT |
756 | struct commit *get_revision(struct rev_info *revs) |
757 | { | |
765ac8ec | 758 | struct commit_list *list = revs->commits; |
765ac8ec LT |
759 | |
760 | if (!list) | |
a4a88b2b | 761 | return NULL; |
a4a88b2b | 762 | |
765ac8ec | 763 | /* Check the max_count ... */ |
765ac8ec LT |
764 | switch (revs->max_count) { |
765 | case -1: | |
766 | break; | |
767 | case 0: | |
768 | return NULL; | |
769 | default: | |
770 | revs->max_count--; | |
771 | } | |
a4a88b2b | 772 | |
765ac8ec | 773 | do { |
ea5ed3ab LT |
774 | struct commit *commit = revs->commits->item; |
775 | ||
2a0925be LT |
776 | revs->commits = revs->commits->next; |
777 | ||
778 | /* | |
779 | * If we haven't done the list limiting, we need to look at | |
be7db6e5 LT |
780 | * the parents here. We also need to do the date-based limiting |
781 | * that we'd otherwise have done in limit_list(). | |
2a0925be | 782 | */ |
be7db6e5 | 783 | if (!revs->limited) { |
22c31bf1 JH |
784 | if ((revs->unpacked && |
785 | has_sha1_pack(commit->object.sha1)) || | |
786 | (revs->max_age != -1 && | |
787 | (commit->date < revs->max_age))) | |
be7db6e5 | 788 | continue; |
2a0925be | 789 | add_parents_to_list(revs, commit, &revs->commits); |
be7db6e5 | 790 | } |
384e99a4 | 791 | if (commit->object.flags & SHOWN) |
2a0925be | 792 | continue; |
384e99a4 JH |
793 | if (!(commit->object.flags & BOUNDARY) && |
794 | (commit->object.flags & UNINTERESTING)) | |
2a0925be | 795 | continue; |
765ac8ec | 796 | if (revs->min_age != -1 && (commit->date > revs->min_age)) |
2a0925be | 797 | continue; |
384e99a4 JH |
798 | if (revs->no_merges && |
799 | commit->parents && commit->parents->next) | |
2a0925be | 800 | continue; |
8efdc326 | 801 | if (revs->prune_fn && revs->dense) { |
765ac8ec | 802 | if (!(commit->object.flags & TREECHANGE)) |
2a0925be LT |
803 | continue; |
804 | if (revs->parents) | |
805 | rewrite_parents(commit); | |
384e99a4 | 806 | } |
765ac8ec LT |
807 | commit->object.flags |= SHOWN; |
808 | return commit; | |
809 | } while (revs->commits); | |
810 | return NULL; | |
811 | } |