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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 | ||
cd2bdc53 | 119 | static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags) |
ae563542 LT |
120 | { |
121 | struct object *object; | |
122 | ||
123 | object = parse_object(sha1); | |
124 | if (!object) | |
125 | die("bad object %s", name); | |
cd2bdc53 LT |
126 | object->flags |= flags; |
127 | return object; | |
128 | } | |
129 | ||
130 | static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name) | |
131 | { | |
132 | unsigned long flags = object->flags; | |
ae563542 LT |
133 | |
134 | /* | |
135 | * Tag object? Look what it points to.. | |
136 | */ | |
137 | while (object->type == tag_type) { | |
138 | struct tag *tag = (struct tag *) object; | |
cd2bdc53 | 139 | if (revs->tag_objects && !(flags & UNINTERESTING)) |
ae563542 LT |
140 | add_pending_object(revs, object, tag->tag); |
141 | object = parse_object(tag->tagged->sha1); | |
142 | if (!object) | |
143 | die("bad object %s", sha1_to_hex(tag->tagged->sha1)); | |
144 | } | |
145 | ||
146 | /* | |
147 | * Commit object? Just return it, we'll do all the complex | |
148 | * reachability crud. | |
149 | */ | |
150 | if (object->type == commit_type) { | |
151 | struct commit *commit = (struct commit *)object; | |
ae563542 LT |
152 | if (parse_commit(commit) < 0) |
153 | die("unable to parse commit %s", name); | |
d9a83684 | 154 | if (flags & UNINTERESTING) { |
ae563542 | 155 | mark_parents_uninteresting(commit); |
d9a83684 LT |
156 | revs->limited = 1; |
157 | } | |
ae563542 LT |
158 | return commit; |
159 | } | |
160 | ||
161 | /* | |
162 | * Tree object? Either mark it uniniteresting, or add it | |
163 | * to the list of objects to look at later.. | |
164 | */ | |
165 | if (object->type == tree_type) { | |
166 | struct tree *tree = (struct tree *)object; | |
167 | if (!revs->tree_objects) | |
168 | return NULL; | |
169 | if (flags & UNINTERESTING) { | |
170 | mark_tree_uninteresting(tree); | |
171 | return NULL; | |
172 | } | |
173 | add_pending_object(revs, object, ""); | |
174 | return NULL; | |
175 | } | |
176 | ||
177 | /* | |
178 | * Blob object? You know the drill by now.. | |
179 | */ | |
180 | if (object->type == blob_type) { | |
181 | struct blob *blob = (struct blob *)object; | |
182 | if (!revs->blob_objects) | |
183 | return NULL; | |
184 | if (flags & UNINTERESTING) { | |
185 | mark_blob_uninteresting(blob); | |
186 | return NULL; | |
187 | } | |
188 | add_pending_object(revs, object, ""); | |
189 | return NULL; | |
190 | } | |
191 | die("%s is unknown object", name); | |
192 | } | |
193 | ||
a4a88b2b LT |
194 | static int everybody_uninteresting(struct commit_list *orig) |
195 | { | |
196 | struct commit_list *list = orig; | |
197 | while (list) { | |
198 | struct commit *commit = list->item; | |
199 | list = list->next; | |
200 | if (commit->object.flags & UNINTERESTING) | |
201 | continue; | |
202 | return 0; | |
203 | } | |
204 | return 1; | |
205 | } | |
206 | ||
8efdc326 | 207 | static int tree_difference = REV_TREE_SAME; |
a4a88b2b LT |
208 | |
209 | static void file_add_remove(struct diff_options *options, | |
210 | int addremove, unsigned mode, | |
211 | const unsigned char *sha1, | |
212 | const char *base, const char *path) | |
213 | { | |
8efdc326 | 214 | int diff = REV_TREE_DIFFERENT; |
a4a88b2b LT |
215 | |
216 | /* | |
8efdc326 FK |
217 | * Is it an add of a new file? It means that the old tree |
218 | * didn't have it at all, so we will turn "REV_TREE_SAME" -> | |
219 | * "REV_TREE_NEW", but leave any "REV_TREE_DIFFERENT" alone | |
220 | * (and if it already was "REV_TREE_NEW", we'll keep it | |
221 | * "REV_TREE_NEW" of course). | |
a4a88b2b LT |
222 | */ |
223 | if (addremove == '+') { | |
224 | diff = tree_difference; | |
8efdc326 | 225 | if (diff != REV_TREE_SAME) |
a4a88b2b | 226 | return; |
8efdc326 | 227 | diff = REV_TREE_NEW; |
a4a88b2b LT |
228 | } |
229 | tree_difference = diff; | |
230 | } | |
231 | ||
232 | static void file_change(struct diff_options *options, | |
233 | unsigned old_mode, unsigned new_mode, | |
234 | const unsigned char *old_sha1, | |
235 | const unsigned char *new_sha1, | |
236 | const char *base, const char *path) | |
237 | { | |
8efdc326 | 238 | tree_difference = REV_TREE_DIFFERENT; |
a4a88b2b LT |
239 | } |
240 | ||
c4e05b1a | 241 | int rev_compare_tree(struct rev_info *revs, struct tree *t1, struct tree *t2) |
a4a88b2b LT |
242 | { |
243 | if (!t1) | |
8efdc326 | 244 | return REV_TREE_NEW; |
a4a88b2b | 245 | if (!t2) |
8efdc326 FK |
246 | return REV_TREE_DIFFERENT; |
247 | tree_difference = REV_TREE_SAME; | |
c4e05b1a | 248 | if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", |
cd2bdc53 | 249 | &revs->pruning) < 0) |
8efdc326 | 250 | return REV_TREE_DIFFERENT; |
a4a88b2b LT |
251 | return tree_difference; |
252 | } | |
253 | ||
c4e05b1a | 254 | int rev_same_tree_as_empty(struct rev_info *revs, 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; | |
cd2bdc53 | 272 | retval = diff_tree(&empty, &real, "", &revs->pruning); |
a4a88b2b LT |
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) { | |
c4e05b1a | 287 | if (!rev_same_tree_as_empty(revs, 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); |
c4e05b1a | 297 | switch (rev_compare_tree(revs, p->tree, commit->tree)) { |
8efdc326 | 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 && | |
c4e05b1a | 315 | rev_same_tree_as_empty(revs, 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 | ||
3381c790 LT |
343 | if (commit->object.flags & ADDED) |
344 | return; | |
345 | commit->object.flags |= ADDED; | |
346 | ||
a4a88b2b LT |
347 | /* |
348 | * If the commit is uninteresting, don't try to | |
349 | * prune parents - we want the maximal uninteresting | |
350 | * set. | |
351 | * | |
352 | * Normally we haven't parsed the parent | |
353 | * yet, so we won't have a parent of a parent | |
354 | * here. However, it may turn out that we've | |
355 | * reached this commit some other way (where it | |
356 | * wasn't uninteresting), in which case we need | |
357 | * to mark its parents recursively too.. | |
358 | */ | |
359 | if (commit->object.flags & UNINTERESTING) { | |
360 | while (parent) { | |
361 | struct commit *p = parent->item; | |
362 | parent = parent->next; | |
363 | parse_commit(p); | |
364 | p->object.flags |= UNINTERESTING; | |
365 | if (p->parents) | |
366 | mark_parents_uninteresting(p); | |
367 | if (p->object.flags & SEEN) | |
368 | continue; | |
369 | p->object.flags |= SEEN; | |
370 | insert_by_date(p, list); | |
371 | } | |
372 | return; | |
373 | } | |
374 | ||
375 | /* | |
376 | * Ok, the commit wasn't uninteresting. Try to | |
377 | * simplify the commit history and find the parent | |
378 | * that has no differences in the path set if one exists. | |
379 | */ | |
8efdc326 FK |
380 | if (revs->prune_fn) |
381 | revs->prune_fn(revs, commit); | |
a4a88b2b LT |
382 | |
383 | parent = commit->parents; | |
384 | while (parent) { | |
385 | struct commit *p = parent->item; | |
386 | ||
387 | parent = parent->next; | |
388 | ||
389 | parse_commit(p); | |
390 | if (p->object.flags & SEEN) | |
391 | continue; | |
392 | p->object.flags |= SEEN; | |
393 | insert_by_date(p, list); | |
394 | } | |
395 | } | |
396 | ||
397 | static void limit_list(struct rev_info *revs) | |
398 | { | |
399 | struct commit_list *list = revs->commits; | |
400 | struct commit_list *newlist = NULL; | |
401 | struct commit_list **p = &newlist; | |
402 | ||
403 | while (list) { | |
404 | struct commit_list *entry = list; | |
405 | struct commit *commit = list->item; | |
406 | struct object *obj = &commit->object; | |
407 | ||
408 | list = list->next; | |
409 | free(entry); | |
410 | ||
411 | if (revs->max_age != -1 && (commit->date < revs->max_age)) | |
412 | obj->flags |= UNINTERESTING; | |
413 | if (revs->unpacked && has_sha1_pack(obj->sha1)) | |
414 | obj->flags |= UNINTERESTING; | |
415 | add_parents_to_list(revs, commit, &list); | |
416 | if (obj->flags & UNINTERESTING) { | |
417 | mark_parents_uninteresting(commit); | |
418 | if (everybody_uninteresting(list)) | |
419 | break; | |
420 | continue; | |
421 | } | |
422 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
423 | continue; | |
424 | p = &commit_list_insert(commit, p)->next; | |
425 | } | |
384e99a4 | 426 | if (revs->boundary) { |
4c0fea0f JH |
427 | /* mark the ones that are on the result list first */ |
428 | for (list = newlist; list; list = list->next) { | |
429 | struct commit *commit = list->item; | |
430 | commit->object.flags |= TMP_MARK; | |
431 | } | |
432 | for (list = newlist; list; list = list->next) { | |
384e99a4 JH |
433 | struct commit *commit = list->item; |
434 | struct object *obj = &commit->object; | |
4c0fea0f JH |
435 | struct commit_list *parent; |
436 | if (obj->flags & UNINTERESTING) | |
384e99a4 | 437 | continue; |
4c0fea0f JH |
438 | for (parent = commit->parents; |
439 | parent; | |
440 | parent = parent->next) { | |
384e99a4 | 441 | struct commit *pcommit = parent->item; |
384e99a4 JH |
442 | if (!(pcommit->object.flags & UNINTERESTING)) |
443 | continue; | |
444 | pcommit->object.flags |= BOUNDARY; | |
4c0fea0f JH |
445 | if (pcommit->object.flags & TMP_MARK) |
446 | continue; | |
447 | pcommit->object.flags |= TMP_MARK; | |
384e99a4 JH |
448 | p = &commit_list_insert(pcommit, p)->next; |
449 | } | |
4c0fea0f JH |
450 | } |
451 | for (list = newlist; list; list = list->next) { | |
452 | struct commit *commit = list->item; | |
453 | commit->object.flags &= ~TMP_MARK; | |
384e99a4 JH |
454 | } |
455 | } | |
a4a88b2b LT |
456 | revs->commits = newlist; |
457 | } | |
458 | ||
ae563542 LT |
459 | static int all_flags; |
460 | static struct rev_info *all_revs; | |
461 | ||
462 | static int handle_one_ref(const char *path, const unsigned char *sha1) | |
463 | { | |
cd2bdc53 LT |
464 | struct object *object = get_reference(all_revs, path, sha1, all_flags); |
465 | add_pending_object(all_revs, object, ""); | |
ae563542 LT |
466 | return 0; |
467 | } | |
468 | ||
469 | static void handle_all(struct rev_info *revs, unsigned flags) | |
470 | { | |
471 | all_revs = revs; | |
472 | all_flags = flags; | |
473 | for_each_ref(handle_one_ref); | |
474 | } | |
475 | ||
8efdc326 FK |
476 | void init_revisions(struct rev_info *revs) |
477 | { | |
478 | memset(revs, 0, sizeof(*revs)); | |
cd2bdc53 LT |
479 | revs->pruning.recursive = 1; |
480 | revs->pruning.add_remove = file_add_remove; | |
481 | revs->pruning.change = file_change; | |
8efdc326 FK |
482 | revs->lifo = 1; |
483 | revs->dense = 1; | |
484 | revs->prefix = setup_git_directory(); | |
485 | revs->max_age = -1; | |
486 | revs->min_age = -1; | |
487 | revs->max_count = -1; | |
488 | ||
489 | revs->prune_fn = NULL; | |
490 | revs->prune_data = NULL; | |
491 | ||
492 | revs->topo_setter = topo_sort_default_setter; | |
493 | revs->topo_getter = topo_sort_default_getter; | |
cd2bdc53 LT |
494 | |
495 | revs->header_prefix = ""; | |
496 | revs->commit_format = CMIT_FMT_DEFAULT; | |
497 | ||
498 | diff_setup(&revs->diffopt); | |
8efdc326 FK |
499 | } |
500 | ||
ae563542 LT |
501 | /* |
502 | * Parse revision information, filling in the "rev_info" structure, | |
503 | * and removing the used arguments from the argument list. | |
504 | * | |
765ac8ec LT |
505 | * Returns the number of arguments left that weren't recognized |
506 | * (which are also moved to the head of the argument list) | |
ae563542 | 507 | */ |
a4a88b2b | 508 | int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def) |
ae563542 LT |
509 | { |
510 | int i, flags, seen_dashdash; | |
765ac8ec | 511 | const char **unrecognized = argv + 1; |
ae563542 LT |
512 | int left = 1; |
513 | ||
8efdc326 | 514 | init_revisions(revs); |
ae563542 LT |
515 | |
516 | /* First, search for "--" */ | |
517 | seen_dashdash = 0; | |
518 | for (i = 1; i < argc; i++) { | |
519 | const char *arg = argv[i]; | |
520 | if (strcmp(arg, "--")) | |
521 | continue; | |
522 | argv[i] = NULL; | |
523 | argc = i; | |
8efdc326 | 524 | revs->prune_data = get_pathspec(revs->prefix, argv + i + 1); |
ae563542 LT |
525 | seen_dashdash = 1; |
526 | break; | |
527 | } | |
528 | ||
529 | flags = 0; | |
530 | for (i = 1; i < argc; i++) { | |
cd2bdc53 | 531 | struct object *object; |
ae563542 LT |
532 | const char *arg = argv[i]; |
533 | unsigned char sha1[20]; | |
534 | char *dotdot; | |
535 | int local_flags; | |
536 | ||
537 | if (*arg == '-') { | |
cd2bdc53 | 538 | int opts; |
ae563542 LT |
539 | if (!strncmp(arg, "--max-count=", 12)) { |
540 | revs->max_count = atoi(arg + 12); | |
541 | continue; | |
542 | } | |
64bc6e3d JH |
543 | /* accept -<digit>, like traditilnal "head" */ |
544 | if ((*arg == '-') && isdigit(arg[1])) { | |
545 | revs->max_count = atoi(arg + 1); | |
546 | continue; | |
547 | } | |
548 | if (!strcmp(arg, "-n")) { | |
549 | if (argc <= i + 1) | |
550 | die("-n requires an argument"); | |
551 | revs->max_count = atoi(argv[++i]); | |
552 | continue; | |
553 | } | |
554 | if (!strncmp(arg,"-n",2)) { | |
555 | revs->max_count = atoi(arg + 2); | |
556 | continue; | |
557 | } | |
ae563542 LT |
558 | if (!strncmp(arg, "--max-age=", 10)) { |
559 | revs->max_age = atoi(arg + 10); | |
ae563542 LT |
560 | continue; |
561 | } | |
fd751667 JH |
562 | if (!strncmp(arg, "--since=", 8)) { |
563 | revs->max_age = approxidate(arg + 8); | |
fd751667 JH |
564 | continue; |
565 | } | |
566 | if (!strncmp(arg, "--after=", 8)) { | |
567 | revs->max_age = approxidate(arg + 8); | |
53069686 JH |
568 | continue; |
569 | } | |
570 | if (!strncmp(arg, "--min-age=", 10)) { | |
571 | revs->min_age = atoi(arg + 10); | |
fd751667 JH |
572 | continue; |
573 | } | |
574 | if (!strncmp(arg, "--before=", 9)) { | |
575 | revs->min_age = approxidate(arg + 9); | |
fd751667 JH |
576 | continue; |
577 | } | |
578 | if (!strncmp(arg, "--until=", 8)) { | |
579 | revs->min_age = approxidate(arg + 8); | |
fd751667 JH |
580 | continue; |
581 | } | |
ae563542 LT |
582 | if (!strcmp(arg, "--all")) { |
583 | handle_all(revs, flags); | |
584 | continue; | |
585 | } | |
586 | if (!strcmp(arg, "--not")) { | |
587 | flags ^= UNINTERESTING; | |
588 | continue; | |
589 | } | |
590 | if (!strcmp(arg, "--default")) { | |
591 | if (++i >= argc) | |
592 | die("bad --default argument"); | |
593 | def = argv[i]; | |
594 | continue; | |
595 | } | |
596 | if (!strcmp(arg, "--topo-order")) { | |
597 | revs->topo_order = 1; | |
598 | continue; | |
599 | } | |
600 | if (!strcmp(arg, "--date-order")) { | |
601 | revs->lifo = 0; | |
602 | revs->topo_order = 1; | |
603 | continue; | |
604 | } | |
7b0c9966 LT |
605 | if (!strcmp(arg, "--parents")) { |
606 | revs->parents = 1; | |
607 | continue; | |
608 | } | |
ae563542 LT |
609 | if (!strcmp(arg, "--dense")) { |
610 | revs->dense = 1; | |
611 | continue; | |
612 | } | |
613 | if (!strcmp(arg, "--sparse")) { | |
614 | revs->dense = 0; | |
615 | continue; | |
616 | } | |
617 | if (!strcmp(arg, "--remove-empty")) { | |
618 | revs->remove_empty_trees = 1; | |
619 | continue; | |
620 | } | |
5cdeae71 | 621 | if (!strcmp(arg, "--no-merges")) { |
765ac8ec LT |
622 | revs->no_merges = 1; |
623 | continue; | |
624 | } | |
384e99a4 JH |
625 | if (!strcmp(arg, "--boundary")) { |
626 | revs->boundary = 1; | |
627 | continue; | |
628 | } | |
ae563542 LT |
629 | if (!strcmp(arg, "--objects")) { |
630 | revs->tag_objects = 1; | |
631 | revs->tree_objects = 1; | |
632 | revs->blob_objects = 1; | |
633 | continue; | |
634 | } | |
635 | if (!strcmp(arg, "--objects-edge")) { | |
636 | revs->tag_objects = 1; | |
637 | revs->tree_objects = 1; | |
638 | revs->blob_objects = 1; | |
639 | revs->edge_hint = 1; | |
640 | continue; | |
641 | } | |
d9a83684 LT |
642 | if (!strcmp(arg, "--unpacked")) { |
643 | revs->unpacked = 1; | |
d9a83684 LT |
644 | continue; |
645 | } | |
cd2bdc53 LT |
646 | if (!strcmp(arg, "-r")) { |
647 | revs->diff = 1; | |
648 | revs->diffopt.recursive = 1; | |
649 | continue; | |
650 | } | |
651 | if (!strcmp(arg, "-t")) { | |
652 | revs->diff = 1; | |
653 | revs->diffopt.recursive = 1; | |
654 | revs->diffopt.tree_in_recursive = 1; | |
655 | continue; | |
656 | } | |
657 | if (!strcmp(arg, "-m")) { | |
658 | revs->ignore_merges = 0; | |
659 | continue; | |
660 | } | |
661 | if (!strcmp(arg, "-c")) { | |
662 | revs->diff = 1; | |
663 | revs->combine_merges = 1; | |
664 | continue; | |
665 | } | |
666 | if (!strcmp(arg, "--cc")) { | |
667 | revs->diff = 1; | |
668 | revs->dense_combined_merges = 1; | |
669 | revs->combine_merges = 1; | |
670 | continue; | |
671 | } | |
672 | if (!strcmp(arg, "-v")) { | |
673 | revs->verbose_header = 1; | |
674 | revs->header_prefix = "diff-tree "; | |
675 | continue; | |
676 | } | |
677 | if (!strncmp(arg, "--pretty", 8)) { | |
678 | revs->verbose_header = 1; | |
679 | revs->header_prefix = "diff-tree "; | |
680 | revs->commit_format = get_commit_format(arg+8); | |
681 | continue; | |
682 | } | |
683 | if (!strcmp(arg, "--root")) { | |
684 | revs->show_root_diff = 1; | |
685 | continue; | |
686 | } | |
687 | if (!strcmp(arg, "--no-commit-id")) { | |
688 | revs->no_commit_id = 1; | |
689 | continue; | |
690 | } | |
691 | if (!strcmp(arg, "--always")) { | |
692 | revs->always_show_header = 1; | |
693 | continue; | |
694 | } | |
695 | if (!strcmp(arg, "--no-abbrev")) { | |
696 | revs->abbrev = 0; | |
697 | continue; | |
698 | } | |
699 | if (!strcmp(arg, "--abbrev")) { | |
700 | revs->abbrev = DEFAULT_ABBREV; | |
701 | continue; | |
702 | } | |
703 | if (!strcmp(arg, "--abbrev-commit")) { | |
704 | revs->abbrev_commit = 1; | |
705 | continue; | |
706 | } | |
707 | if (!strcmp(arg, "--full-diff")) { | |
708 | revs->diff = 1; | |
709 | revs->full_diff = 1; | |
710 | continue; | |
711 | } | |
712 | opts = diff_opt_parse(&revs->diffopt, argv+i, argc-i); | |
713 | if (opts > 0) { | |
714 | revs->diff = 1; | |
715 | i += opts - 1; | |
716 | continue; | |
717 | } | |
ae563542 LT |
718 | *unrecognized++ = arg; |
719 | left++; | |
720 | continue; | |
721 | } | |
722 | dotdot = strstr(arg, ".."); | |
723 | if (dotdot) { | |
724 | unsigned char from_sha1[20]; | |
0c8b106b JH |
725 | const char *next = dotdot + 2; |
726 | const char *this = arg; | |
ae563542 LT |
727 | *dotdot = 0; |
728 | if (!*next) | |
0c8b106b | 729 | next = "HEAD"; |
ce4a7063 | 730 | if (dotdot == arg) |
0c8b106b | 731 | this = "HEAD"; |
ce4a7063 JH |
732 | if (!get_sha1(this, from_sha1) && |
733 | !get_sha1(next, sha1)) { | |
cd2bdc53 LT |
734 | struct object *exclude; |
735 | struct object *include; | |
ae563542 | 736 | |
cd2bdc53 LT |
737 | exclude = get_reference(revs, this, from_sha1, flags ^ UNINTERESTING); |
738 | include = get_reference(revs, next, sha1, flags); | |
ae563542 LT |
739 | if (!exclude || !include) |
740 | die("Invalid revision range %s..%s", arg, next); | |
cd2bdc53 LT |
741 | add_pending_object(revs, exclude, this); |
742 | add_pending_object(revs, include, next); | |
ae563542 LT |
743 | continue; |
744 | } | |
745 | *dotdot = '.'; | |
746 | } | |
747 | local_flags = 0; | |
748 | if (*arg == '^') { | |
749 | local_flags = UNINTERESTING; | |
750 | arg++; | |
751 | } | |
752 | if (get_sha1(arg, sha1) < 0) { | |
753 | struct stat st; | |
754 | int j; | |
755 | ||
756 | if (seen_dashdash || local_flags) | |
757 | die("bad revision '%s'", arg); | |
758 | ||
759 | /* If we didn't have a "--", all filenames must exist */ | |
760 | for (j = i; j < argc; j++) { | |
761 | if (lstat(argv[j], &st) < 0) | |
fb18a2ed | 762 | die("'%s': %s", argv[j], strerror(errno)); |
ae563542 | 763 | } |
8efdc326 | 764 | revs->prune_data = get_pathspec(revs->prefix, argv + i); |
ae563542 LT |
765 | break; |
766 | } | |
cd2bdc53 LT |
767 | object = get_reference(revs, arg, sha1, flags ^ local_flags); |
768 | add_pending_object(revs, object, arg); | |
ae563542 | 769 | } |
cd2bdc53 | 770 | if (def && !revs->pending_objects) { |
ae563542 | 771 | unsigned char sha1[20]; |
cd2bdc53 | 772 | struct object *object; |
ae563542 LT |
773 | if (get_sha1(def, sha1) < 0) |
774 | die("bad default revision '%s'", def); | |
cd2bdc53 LT |
775 | object = get_reference(revs, def, sha1, 0); |
776 | add_pending_object(revs, object, def); | |
ae563542 | 777 | } |
8efdc326 | 778 | |
bbbc8c3a | 779 | if (revs->topo_order || revs->unpacked) |
53069686 JH |
780 | revs->limited = 1; |
781 | ||
8efdc326 | 782 | if (revs->prune_data) { |
cd2bdc53 | 783 | diff_tree_setup_paths(revs->prune_data, &revs->pruning); |
8efdc326 | 784 | revs->prune_fn = try_to_simplify_commit; |
cd2bdc53 LT |
785 | if (!revs->full_diff) |
786 | diff_tree_setup_paths(revs->prune_data, &revs->diffopt); | |
8efdc326 | 787 | } |
cd2bdc53 LT |
788 | if (revs->combine_merges) { |
789 | revs->ignore_merges = 0; | |
790 | if (revs->dense_combined_merges) | |
791 | revs->diffopt.output_format = DIFF_FORMAT_PATCH; | |
792 | } | |
793 | if (revs->diffopt.output_format == DIFF_FORMAT_PATCH) | |
794 | revs->diffopt.recursive = 1; | |
795 | revs->diffopt.abbrev = revs->abbrev; | |
796 | diff_setup_done(&revs->diffopt); | |
8efdc326 | 797 | |
ae563542 LT |
798 | return left; |
799 | } | |
a4a88b2b LT |
800 | |
801 | void prepare_revision_walk(struct rev_info *revs) | |
802 | { | |
cd2bdc53 LT |
803 | struct object_list *list; |
804 | ||
805 | list = revs->pending_objects; | |
806 | revs->pending_objects = NULL; | |
807 | while (list) { | |
808 | struct commit *commit = handle_commit(revs, list->item, list->name); | |
809 | if (commit) { | |
810 | if (!(commit->object.flags & SEEN)) { | |
811 | commit->object.flags |= SEEN; | |
812 | insert_by_date(commit, &revs->commits); | |
813 | } | |
814 | } | |
815 | list = list->next; | |
816 | } | |
817 | ||
a4a88b2b LT |
818 | if (revs->limited) |
819 | limit_list(revs); | |
820 | if (revs->topo_order) | |
8efdc326 FK |
821 | sort_in_topological_order_fn(&revs->commits, revs->lifo, |
822 | revs->topo_setter, | |
823 | revs->topo_getter); | |
a4a88b2b LT |
824 | } |
825 | ||
3381c790 | 826 | static int rewrite_one(struct rev_info *revs, struct commit **pp) |
765ac8ec LT |
827 | { |
828 | for (;;) { | |
829 | struct commit *p = *pp; | |
3381c790 LT |
830 | if (!revs->limited) |
831 | add_parents_to_list(revs, p, &revs->commits); | |
765ac8ec LT |
832 | if (p->object.flags & (TREECHANGE | UNINTERESTING)) |
833 | return 0; | |
834 | if (!p->parents) | |
835 | return -1; | |
836 | *pp = p->parents->item; | |
837 | } | |
838 | } | |
839 | ||
3381c790 | 840 | static void rewrite_parents(struct rev_info *revs, struct commit *commit) |
765ac8ec LT |
841 | { |
842 | struct commit_list **pp = &commit->parents; | |
843 | while (*pp) { | |
844 | struct commit_list *parent = *pp; | |
3381c790 | 845 | if (rewrite_one(revs, &parent->item) < 0) { |
765ac8ec LT |
846 | *pp = parent->next; |
847 | continue; | |
848 | } | |
849 | pp = &parent->next; | |
850 | } | |
851 | } | |
852 | ||
a4a88b2b LT |
853 | struct commit *get_revision(struct rev_info *revs) |
854 | { | |
765ac8ec | 855 | struct commit_list *list = revs->commits; |
765ac8ec LT |
856 | |
857 | if (!list) | |
a4a88b2b | 858 | return NULL; |
a4a88b2b | 859 | |
765ac8ec | 860 | /* Check the max_count ... */ |
765ac8ec LT |
861 | switch (revs->max_count) { |
862 | case -1: | |
863 | break; | |
864 | case 0: | |
865 | return NULL; | |
866 | default: | |
867 | revs->max_count--; | |
868 | } | |
a4a88b2b | 869 | |
765ac8ec | 870 | do { |
ea5ed3ab LT |
871 | struct commit *commit = revs->commits->item; |
872 | ||
2a0925be LT |
873 | revs->commits = revs->commits->next; |
874 | ||
875 | /* | |
876 | * If we haven't done the list limiting, we need to look at | |
be7db6e5 LT |
877 | * the parents here. We also need to do the date-based limiting |
878 | * that we'd otherwise have done in limit_list(). | |
2a0925be | 879 | */ |
be7db6e5 | 880 | if (!revs->limited) { |
22c31bf1 JH |
881 | if ((revs->unpacked && |
882 | has_sha1_pack(commit->object.sha1)) || | |
883 | (revs->max_age != -1 && | |
884 | (commit->date < revs->max_age))) | |
be7db6e5 | 885 | continue; |
2a0925be | 886 | add_parents_to_list(revs, commit, &revs->commits); |
be7db6e5 | 887 | } |
384e99a4 | 888 | if (commit->object.flags & SHOWN) |
2a0925be | 889 | continue; |
384e99a4 JH |
890 | if (!(commit->object.flags & BOUNDARY) && |
891 | (commit->object.flags & UNINTERESTING)) | |
2a0925be | 892 | continue; |
765ac8ec | 893 | if (revs->min_age != -1 && (commit->date > revs->min_age)) |
2a0925be | 894 | continue; |
384e99a4 JH |
895 | if (revs->no_merges && |
896 | commit->parents && commit->parents->next) | |
2a0925be | 897 | continue; |
8efdc326 | 898 | if (revs->prune_fn && revs->dense) { |
765ac8ec | 899 | if (!(commit->object.flags & TREECHANGE)) |
2a0925be LT |
900 | continue; |
901 | if (revs->parents) | |
3381c790 | 902 | rewrite_parents(revs, commit); |
384e99a4 | 903 | } |
765ac8ec LT |
904 | commit->object.flags |= SHOWN; |
905 | return commit; | |
906 | } while (revs->commits); | |
907 | return NULL; | |
908 | } |