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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" | |
7fefda5c | 9 | #include "graph.h" |
8ecae9b0 | 10 | #include "grep.h" |
8860fd42 | 11 | #include "reflog-walk.h" |
d7a17cad | 12 | #include "patch-ids.h" |
f35f5603 | 13 | #include "decorate.h" |
78892e32 | 14 | #include "log-tree.h" |
ae563542 | 15 | |
cdcefbc9 LT |
16 | volatile show_early_output_fn_t show_early_output; |
17 | ||
cf2ab916 | 18 | char *path_name(const struct name_path *path, const char *name) |
ae563542 | 19 | { |
cf2ab916 | 20 | const struct name_path *p; |
ae563542 LT |
21 | char *n, *m; |
22 | int nlen = strlen(name); | |
23 | int len = nlen + 1; | |
24 | ||
25 | for (p = path; p; p = p->up) { | |
26 | if (p->elem_len) | |
27 | len += p->elem_len + 1; | |
28 | } | |
29 | n = xmalloc(len); | |
30 | m = n + len - (nlen + 1); | |
31 | strcpy(m, name); | |
32 | for (p = path; p; p = p->up) { | |
33 | if (p->elem_len) { | |
34 | m -= p->elem_len + 1; | |
35 | memcpy(m, p->elem, p->elem_len); | |
36 | m[p->elem_len] = '/'; | |
37 | } | |
38 | } | |
39 | return n; | |
40 | } | |
41 | ||
1f1e895f LT |
42 | void add_object(struct object *obj, |
43 | struct object_array *p, | |
44 | struct name_path *path, | |
45 | const char *name) | |
ae563542 | 46 | { |
1f1e895f | 47 | add_object_array(obj, path_name(path, name), p); |
ae563542 LT |
48 | } |
49 | ||
50 | static void mark_blob_uninteresting(struct blob *blob) | |
51 | { | |
c1ee9013 MK |
52 | if (!blob) |
53 | return; | |
ae563542 LT |
54 | if (blob->object.flags & UNINTERESTING) |
55 | return; | |
56 | blob->object.flags |= UNINTERESTING; | |
57 | } | |
58 | ||
59 | void mark_tree_uninteresting(struct tree *tree) | |
60 | { | |
f75e53ed | 61 | struct tree_desc desc; |
4c068a98 | 62 | struct name_entry entry; |
ae563542 | 63 | struct object *obj = &tree->object; |
ae563542 | 64 | |
c1ee9013 MK |
65 | if (!tree) |
66 | return; | |
ae563542 LT |
67 | if (obj->flags & UNINTERESTING) |
68 | return; | |
69 | obj->flags |= UNINTERESTING; | |
70 | if (!has_sha1_file(obj->sha1)) | |
71 | return; | |
72 | if (parse_tree(tree) < 0) | |
73 | die("bad tree %s", sha1_to_hex(obj->sha1)); | |
f75e53ed | 74 | |
6fda5e51 | 75 | init_tree_desc(&desc, tree->buffer, tree->size); |
4c068a98 | 76 | while (tree_entry(&desc, &entry)) { |
4d1012c3 LT |
77 | switch (object_type(entry.mode)) { |
78 | case OBJ_TREE: | |
4c068a98 | 79 | mark_tree_uninteresting(lookup_tree(entry.sha1)); |
4d1012c3 LT |
80 | break; |
81 | case OBJ_BLOB: | |
4c068a98 | 82 | mark_blob_uninteresting(lookup_blob(entry.sha1)); |
4d1012c3 LT |
83 | break; |
84 | default: | |
85 | /* Subproject commit - not in this repository */ | |
86 | break; | |
87 | } | |
ae563542 | 88 | } |
f75e53ed LT |
89 | |
90 | /* | |
91 | * We don't care about the tree any more | |
92 | * after it has been marked uninteresting. | |
93 | */ | |
94 | free(tree->buffer); | |
95 | tree->buffer = NULL; | |
ae563542 LT |
96 | } |
97 | ||
98 | void mark_parents_uninteresting(struct commit *commit) | |
99 | { | |
100 | struct commit_list *parents = commit->parents; | |
101 | ||
102 | while (parents) { | |
103 | struct commit *commit = parents->item; | |
d2c4af73 MU |
104 | if (!(commit->object.flags & UNINTERESTING)) { |
105 | commit->object.flags |= UNINTERESTING; | |
ae563542 | 106 | |
d2c4af73 MU |
107 | /* |
108 | * Normally we haven't parsed the parent | |
109 | * yet, so we won't have a parent of a parent | |
110 | * here. However, it may turn out that we've | |
111 | * reached this commit some other way (where it | |
112 | * wasn't uninteresting), in which case we need | |
113 | * to mark its parents recursively too.. | |
114 | */ | |
115 | if (commit->parents) | |
116 | mark_parents_uninteresting(commit); | |
117 | } | |
ae563542 LT |
118 | |
119 | /* | |
120 | * A missing commit is ok iff its parent is marked | |
121 | * uninteresting. | |
122 | * | |
123 | * We just mark such a thing parsed, so that when | |
124 | * it is popped next time around, we won't be trying | |
125 | * to parse it and get an error. | |
126 | */ | |
127 | if (!has_sha1_file(commit->object.sha1)) | |
128 | commit->object.parsed = 1; | |
129 | parents = parents->next; | |
130 | } | |
131 | } | |
132 | ||
2d93b9fa | 133 | static void add_pending_object_with_mode(struct rev_info *revs, struct object *obj, const char *name, unsigned mode) |
ae563542 | 134 | { |
aa27e461 | 135 | if (revs->no_walk && (obj->flags & UNINTERESTING)) |
f222abde | 136 | revs->no_walk = 0; |
7b69b873 JS |
137 | if (revs->reflog_info && obj->type == OBJ_COMMIT && |
138 | add_reflog_for_walk(revs->reflog_info, | |
139 | (struct commit *)obj, name)) | |
140 | return; | |
bb6c2fba | 141 | add_object_array_with_mode(obj, name, &revs->pending, mode); |
ae563542 LT |
142 | } |
143 | ||
2d93b9fa JH |
144 | void add_pending_object(struct rev_info *revs, struct object *obj, const char *name) |
145 | { | |
146 | add_pending_object_with_mode(revs, obj, name, S_IFINVALID); | |
147 | } | |
148 | ||
3384a2df JH |
149 | void add_head_to_pending(struct rev_info *revs) |
150 | { | |
151 | unsigned char sha1[20]; | |
152 | struct object *obj; | |
153 | if (get_sha1("HEAD", sha1)) | |
154 | return; | |
155 | obj = parse_object(sha1); | |
156 | if (!obj) | |
157 | return; | |
158 | add_pending_object(revs, obj, "HEAD"); | |
159 | } | |
160 | ||
cd2bdc53 | 161 | static struct object *get_reference(struct rev_info *revs, const char *name, const unsigned char *sha1, unsigned int flags) |
ae563542 LT |
162 | { |
163 | struct object *object; | |
164 | ||
165 | object = parse_object(sha1); | |
166 | if (!object) | |
167 | die("bad object %s", name); | |
cd2bdc53 LT |
168 | object->flags |= flags; |
169 | return object; | |
170 | } | |
171 | ||
172 | static struct commit *handle_commit(struct rev_info *revs, struct object *object, const char *name) | |
173 | { | |
174 | unsigned long flags = object->flags; | |
ae563542 LT |
175 | |
176 | /* | |
177 | * Tag object? Look what it points to.. | |
178 | */ | |
1974632c | 179 | while (object->type == OBJ_TAG) { |
ae563542 | 180 | struct tag *tag = (struct tag *) object; |
cd2bdc53 | 181 | if (revs->tag_objects && !(flags & UNINTERESTING)) |
ae563542 | 182 | add_pending_object(revs, object, tag->tag); |
9684afd9 MK |
183 | if (!tag->tagged) |
184 | die("bad tag"); | |
ae563542 | 185 | object = parse_object(tag->tagged->sha1); |
aeeae1b7 JH |
186 | if (!object) { |
187 | if (flags & UNINTERESTING) | |
188 | return NULL; | |
ae563542 | 189 | die("bad object %s", sha1_to_hex(tag->tagged->sha1)); |
aeeae1b7 | 190 | } |
ae563542 LT |
191 | } |
192 | ||
193 | /* | |
194 | * Commit object? Just return it, we'll do all the complex | |
195 | * reachability crud. | |
196 | */ | |
1974632c | 197 | if (object->type == OBJ_COMMIT) { |
ae563542 | 198 | struct commit *commit = (struct commit *)object; |
ae563542 LT |
199 | if (parse_commit(commit) < 0) |
200 | die("unable to parse commit %s", name); | |
d9a83684 | 201 | if (flags & UNINTERESTING) { |
4262c1b0 | 202 | commit->object.flags |= UNINTERESTING; |
ae563542 | 203 | mark_parents_uninteresting(commit); |
d9a83684 LT |
204 | revs->limited = 1; |
205 | } | |
0f3a290b LT |
206 | if (revs->show_source && !commit->util) |
207 | commit->util = (void *) name; | |
ae563542 LT |
208 | return commit; |
209 | } | |
210 | ||
211 | /* | |
3ea3c215 | 212 | * Tree object? Either mark it uninteresting, or add it |
ae563542 LT |
213 | * to the list of objects to look at later.. |
214 | */ | |
1974632c | 215 | if (object->type == OBJ_TREE) { |
ae563542 LT |
216 | struct tree *tree = (struct tree *)object; |
217 | if (!revs->tree_objects) | |
218 | return NULL; | |
219 | if (flags & UNINTERESTING) { | |
220 | mark_tree_uninteresting(tree); | |
221 | return NULL; | |
222 | } | |
223 | add_pending_object(revs, object, ""); | |
224 | return NULL; | |
225 | } | |
226 | ||
227 | /* | |
228 | * Blob object? You know the drill by now.. | |
229 | */ | |
1974632c | 230 | if (object->type == OBJ_BLOB) { |
ae563542 LT |
231 | struct blob *blob = (struct blob *)object; |
232 | if (!revs->blob_objects) | |
233 | return NULL; | |
234 | if (flags & UNINTERESTING) { | |
235 | mark_blob_uninteresting(blob); | |
236 | return NULL; | |
237 | } | |
238 | add_pending_object(revs, object, ""); | |
239 | return NULL; | |
240 | } | |
241 | die("%s is unknown object", name); | |
242 | } | |
243 | ||
a4a88b2b LT |
244 | static int everybody_uninteresting(struct commit_list *orig) |
245 | { | |
246 | struct commit_list *list = orig; | |
247 | while (list) { | |
248 | struct commit *commit = list->item; | |
249 | list = list->next; | |
250 | if (commit->object.flags & UNINTERESTING) | |
251 | continue; | |
252 | return 0; | |
253 | } | |
254 | return 1; | |
255 | } | |
256 | ||
0a4ba7f8 JH |
257 | /* |
258 | * The goal is to get REV_TREE_NEW as the result only if the | |
ceff8e7a LT |
259 | * diff consists of all '+' (and no other changes), REV_TREE_OLD |
260 | * if the whole diff is removal of old data, and otherwise | |
261 | * REV_TREE_DIFFERENT (of course if the trees are the same we | |
262 | * want REV_TREE_SAME). | |
263 | * That means that once we get to REV_TREE_DIFFERENT, we do not | |
264 | * have to look any further. | |
0a4ba7f8 | 265 | */ |
8efdc326 | 266 | static int tree_difference = REV_TREE_SAME; |
a4a88b2b LT |
267 | |
268 | static void file_add_remove(struct diff_options *options, | |
269 | int addremove, unsigned mode, | |
270 | const unsigned char *sha1, | |
fd55a19e | 271 | const char *fullpath) |
a4a88b2b | 272 | { |
ceff8e7a | 273 | int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD; |
a4a88b2b | 274 | |
ceff8e7a | 275 | tree_difference |= diff; |
dd47aa31 | 276 | if (tree_difference == REV_TREE_DIFFERENT) |
8f67f8ae | 277 | DIFF_OPT_SET(options, HAS_CHANGES); |
a4a88b2b LT |
278 | } |
279 | ||
280 | static void file_change(struct diff_options *options, | |
281 | unsigned old_mode, unsigned new_mode, | |
282 | const unsigned char *old_sha1, | |
283 | const unsigned char *new_sha1, | |
fd55a19e | 284 | const char *fullpath) |
a4a88b2b | 285 | { |
8efdc326 | 286 | tree_difference = REV_TREE_DIFFERENT; |
8f67f8ae | 287 | DIFF_OPT_SET(options, HAS_CHANGES); |
a4a88b2b LT |
288 | } |
289 | ||
3a5e8608 | 290 | static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct commit *commit) |
a4a88b2b | 291 | { |
3a5e8608 LT |
292 | struct tree *t1 = parent->tree; |
293 | struct tree *t2 = commit->tree; | |
294 | ||
a4a88b2b | 295 | if (!t1) |
8efdc326 | 296 | return REV_TREE_NEW; |
ceff8e7a LT |
297 | if (!t2) |
298 | return REV_TREE_OLD; | |
78892e32 LT |
299 | |
300 | if (revs->simplify_by_decoration) { | |
301 | /* | |
302 | * If we are simplifying by decoration, then the commit | |
303 | * is worth showing if it has a tag pointing at it. | |
304 | */ | |
305 | if (lookup_decoration(&name_decoration, &commit->object)) | |
306 | return REV_TREE_DIFFERENT; | |
307 | /* | |
308 | * A commit that is not pointed by a tag is uninteresting | |
309 | * if we are not limited by path. This means that you will | |
310 | * see the usual "commits that touch the paths" plus any | |
311 | * tagged commit by specifying both --simplify-by-decoration | |
312 | * and pathspec. | |
313 | */ | |
314 | if (!revs->prune_data) | |
315 | return REV_TREE_SAME; | |
316 | } | |
ceff8e7a | 317 | |
8efdc326 | 318 | tree_difference = REV_TREE_SAME; |
8f67f8ae | 319 | DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES); |
c4e05b1a | 320 | if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", |
cd2bdc53 | 321 | &revs->pruning) < 0) |
8efdc326 | 322 | return REV_TREE_DIFFERENT; |
a4a88b2b LT |
323 | return tree_difference; |
324 | } | |
325 | ||
3a5e8608 | 326 | static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit) |
a4a88b2b LT |
327 | { |
328 | int retval; | |
329 | void *tree; | |
6fda5e51 | 330 | unsigned long size; |
a4a88b2b | 331 | struct tree_desc empty, real; |
3a5e8608 | 332 | struct tree *t1 = commit->tree; |
a4a88b2b LT |
333 | |
334 | if (!t1) | |
335 | return 0; | |
336 | ||
6fda5e51 | 337 | tree = read_object_with_reference(t1->object.sha1, tree_type, &size, NULL); |
a4a88b2b LT |
338 | if (!tree) |
339 | return 0; | |
6fda5e51 LT |
340 | init_tree_desc(&real, tree, size); |
341 | init_tree_desc(&empty, "", 0); | |
a4a88b2b | 342 | |
0a4ba7f8 | 343 | tree_difference = REV_TREE_SAME; |
8f67f8ae | 344 | DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES); |
cd2bdc53 | 345 | retval = diff_tree(&empty, &real, "", &revs->pruning); |
a4a88b2b LT |
346 | free(tree); |
347 | ||
0a4ba7f8 | 348 | return retval >= 0 && (tree_difference == REV_TREE_SAME); |
a4a88b2b LT |
349 | } |
350 | ||
351 | static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) | |
352 | { | |
353 | struct commit_list **pp, *parent; | |
6631c736 | 354 | int tree_changed = 0, tree_same = 0; |
a4a88b2b | 355 | |
53b2c823 LT |
356 | /* |
357 | * If we don't do pruning, everything is interesting | |
358 | */ | |
7dc0fe3b | 359 | if (!revs->prune) |
53b2c823 | 360 | return; |
53b2c823 | 361 | |
a4a88b2b LT |
362 | if (!commit->tree) |
363 | return; | |
364 | ||
365 | if (!commit->parents) { | |
3a5e8608 | 366 | if (rev_same_tree_as_empty(revs, commit)) |
7dc0fe3b | 367 | commit->object.flags |= TREESAME; |
a4a88b2b LT |
368 | return; |
369 | } | |
370 | ||
53b2c823 LT |
371 | /* |
372 | * Normal non-merge commit? If we don't want to make the | |
373 | * history dense, we consider it always to be a change.. | |
374 | */ | |
7dc0fe3b | 375 | if (!revs->dense && !commit->parents->next) |
53b2c823 | 376 | return; |
53b2c823 | 377 | |
a4a88b2b LT |
378 | pp = &commit->parents; |
379 | while ((parent = *pp) != NULL) { | |
380 | struct commit *p = parent->item; | |
381 | ||
cc0e6c5a AR |
382 | if (parse_commit(p) < 0) |
383 | die("cannot simplify commit %s (because of %s)", | |
384 | sha1_to_hex(commit->object.sha1), | |
385 | sha1_to_hex(p->object.sha1)); | |
3a5e8608 | 386 | switch (rev_compare_tree(revs, p, commit)) { |
8efdc326 | 387 | case REV_TREE_SAME: |
6631c736 | 388 | tree_same = 1; |
9202434c | 389 | if (!revs->simplify_history || (p->object.flags & UNINTERESTING)) { |
f3219fbb JH |
390 | /* Even if a merge with an uninteresting |
391 | * side branch brought the entire change | |
392 | * we are interested in, we do not want | |
393 | * to lose the other branches of this | |
394 | * merge, so we just keep going. | |
395 | */ | |
396 | pp = &parent->next; | |
397 | continue; | |
398 | } | |
a4a88b2b LT |
399 | parent->next = NULL; |
400 | commit->parents = parent; | |
7dc0fe3b | 401 | commit->object.flags |= TREESAME; |
a4a88b2b LT |
402 | return; |
403 | ||
8efdc326 FK |
404 | case REV_TREE_NEW: |
405 | if (revs->remove_empty_trees && | |
3a5e8608 | 406 | rev_same_tree_as_empty(revs, p)) { |
c348f31a JH |
407 | /* We are adding all the specified |
408 | * paths from this parent, so the | |
409 | * history beyond this parent is not | |
410 | * interesting. Remove its parents | |
411 | * (they are grandparents for us). | |
412 | * IOW, we pretend this parent is a | |
413 | * "root" commit. | |
a41e109c | 414 | */ |
cc0e6c5a AR |
415 | if (parse_commit(p) < 0) |
416 | die("cannot simplify commit %s (invalid %s)", | |
417 | sha1_to_hex(commit->object.sha1), | |
418 | sha1_to_hex(p->object.sha1)); | |
c348f31a | 419 | p->parents = NULL; |
a4a88b2b LT |
420 | } |
421 | /* fallthrough */ | |
ceff8e7a | 422 | case REV_TREE_OLD: |
8efdc326 | 423 | case REV_TREE_DIFFERENT: |
f3219fbb | 424 | tree_changed = 1; |
a4a88b2b LT |
425 | pp = &parent->next; |
426 | continue; | |
427 | } | |
428 | die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1)); | |
429 | } | |
6631c736 | 430 | if (tree_changed && !tree_same) |
7dc0fe3b LT |
431 | return; |
432 | commit->object.flags |= TREESAME; | |
a4a88b2b LT |
433 | } |
434 | ||
fce87ae5 AG |
435 | static void insert_by_date_cached(struct commit *p, struct commit_list **head, |
436 | struct commit_list *cached_base, struct commit_list **cache) | |
437 | { | |
438 | struct commit_list *new_entry; | |
439 | ||
440 | if (cached_base && p->date < cached_base->item->date) | |
441 | new_entry = insert_by_date(p, &cached_base->next); | |
442 | else | |
443 | new_entry = insert_by_date(p, head); | |
444 | ||
445 | if (cache && (!*cache || p->date < (*cache)->item->date)) | |
446 | *cache = new_entry; | |
447 | } | |
448 | ||
449 | static int add_parents_to_list(struct rev_info *revs, struct commit *commit, | |
450 | struct commit_list **list, struct commit_list **cache_ptr) | |
a4a88b2b LT |
451 | { |
452 | struct commit_list *parent = commit->parents; | |
577ed5c2 | 453 | unsigned left_flag; |
fce87ae5 | 454 | struct commit_list *cached_base = cache_ptr ? *cache_ptr : NULL; |
a4a88b2b | 455 | |
3381c790 | 456 | if (commit->object.flags & ADDED) |
cc0e6c5a | 457 | return 0; |
3381c790 LT |
458 | commit->object.flags |= ADDED; |
459 | ||
a4a88b2b LT |
460 | /* |
461 | * If the commit is uninteresting, don't try to | |
462 | * prune parents - we want the maximal uninteresting | |
463 | * set. | |
464 | * | |
465 | * Normally we haven't parsed the parent | |
466 | * yet, so we won't have a parent of a parent | |
467 | * here. However, it may turn out that we've | |
468 | * reached this commit some other way (where it | |
469 | * wasn't uninteresting), in which case we need | |
470 | * to mark its parents recursively too.. | |
471 | */ | |
472 | if (commit->object.flags & UNINTERESTING) { | |
473 | while (parent) { | |
474 | struct commit *p = parent->item; | |
475 | parent = parent->next; | |
aeeae1b7 JH |
476 | if (p) |
477 | p->object.flags |= UNINTERESTING; | |
cc0e6c5a | 478 | if (parse_commit(p) < 0) |
aeeae1b7 | 479 | continue; |
a4a88b2b LT |
480 | if (p->parents) |
481 | mark_parents_uninteresting(p); | |
482 | if (p->object.flags & SEEN) | |
483 | continue; | |
484 | p->object.flags |= SEEN; | |
fce87ae5 | 485 | insert_by_date_cached(p, list, cached_base, cache_ptr); |
a4a88b2b | 486 | } |
cc0e6c5a | 487 | return 0; |
a4a88b2b LT |
488 | } |
489 | ||
490 | /* | |
491 | * Ok, the commit wasn't uninteresting. Try to | |
492 | * simplify the commit history and find the parent | |
493 | * that has no differences in the path set if one exists. | |
494 | */ | |
53b2c823 | 495 | try_to_simplify_commit(revs, commit); |
a4a88b2b | 496 | |
ba1d4505 | 497 | if (revs->no_walk) |
cc0e6c5a | 498 | return 0; |
ba1d4505 | 499 | |
577ed5c2 | 500 | left_flag = (commit->object.flags & SYMMETRIC_LEFT); |
0053e902 | 501 | |
d9c292e8 | 502 | for (parent = commit->parents; parent; parent = parent->next) { |
a4a88b2b LT |
503 | struct commit *p = parent->item; |
504 | ||
cc0e6c5a AR |
505 | if (parse_commit(p) < 0) |
506 | return -1; | |
0f3a290b LT |
507 | if (revs->show_source && !p->util) |
508 | p->util = commit->util; | |
577ed5c2 | 509 | p->object.flags |= left_flag; |
ad1012eb LH |
510 | if (!(p->object.flags & SEEN)) { |
511 | p->object.flags |= SEEN; | |
fce87ae5 | 512 | insert_by_date_cached(p, list, cached_base, cache_ptr); |
ad1012eb | 513 | } |
60d30b02 | 514 | if (revs->first_parent_only) |
d9c292e8 | 515 | break; |
a4a88b2b | 516 | } |
cc0e6c5a | 517 | return 0; |
a4a88b2b LT |
518 | } |
519 | ||
36d56de6 | 520 | static void cherry_pick_list(struct commit_list *list, struct rev_info *revs) |
d7a17cad JH |
521 | { |
522 | struct commit_list *p; | |
523 | int left_count = 0, right_count = 0; | |
524 | int left_first; | |
525 | struct patch_ids ids; | |
526 | ||
527 | /* First count the commits on the left and on the right */ | |
528 | for (p = list; p; p = p->next) { | |
529 | struct commit *commit = p->item; | |
530 | unsigned flags = commit->object.flags; | |
531 | if (flags & BOUNDARY) | |
532 | ; | |
533 | else if (flags & SYMMETRIC_LEFT) | |
534 | left_count++; | |
535 | else | |
536 | right_count++; | |
537 | } | |
538 | ||
539 | left_first = left_count < right_count; | |
540 | init_patch_ids(&ids); | |
36d56de6 JS |
541 | if (revs->diffopt.nr_paths) { |
542 | ids.diffopts.nr_paths = revs->diffopt.nr_paths; | |
543 | ids.diffopts.paths = revs->diffopt.paths; | |
544 | ids.diffopts.pathlens = revs->diffopt.pathlens; | |
545 | } | |
d7a17cad JH |
546 | |
547 | /* Compute patch-ids for one side */ | |
548 | for (p = list; p; p = p->next) { | |
549 | struct commit *commit = p->item; | |
550 | unsigned flags = commit->object.flags; | |
551 | ||
552 | if (flags & BOUNDARY) | |
553 | continue; | |
554 | /* | |
555 | * If we have fewer left, left_first is set and we omit | |
556 | * commits on the right branch in this loop. If we have | |
557 | * fewer right, we skip the left ones. | |
558 | */ | |
559 | if (left_first != !!(flags & SYMMETRIC_LEFT)) | |
560 | continue; | |
561 | commit->util = add_commit_patch_id(commit, &ids); | |
562 | } | |
563 | ||
564 | /* Check the other side */ | |
565 | for (p = list; p; p = p->next) { | |
566 | struct commit *commit = p->item; | |
567 | struct patch_id *id; | |
568 | unsigned flags = commit->object.flags; | |
569 | ||
570 | if (flags & BOUNDARY) | |
571 | continue; | |
572 | /* | |
573 | * If we have fewer left, left_first is set and we omit | |
574 | * commits on the left branch in this loop. | |
575 | */ | |
576 | if (left_first == !!(flags & SYMMETRIC_LEFT)) | |
577 | continue; | |
578 | ||
579 | /* | |
580 | * Have we seen the same patch id? | |
581 | */ | |
582 | id = has_commit_patch_id(commit, &ids); | |
583 | if (!id) | |
584 | continue; | |
585 | id->seen = 1; | |
586 | commit->object.flags |= SHOWN; | |
587 | } | |
588 | ||
589 | /* Now check the original side for seen ones */ | |
590 | for (p = list; p; p = p->next) { | |
591 | struct commit *commit = p->item; | |
592 | struct patch_id *ent; | |
593 | ||
594 | ent = commit->util; | |
595 | if (!ent) | |
596 | continue; | |
597 | if (ent->seen) | |
598 | commit->object.flags |= SHOWN; | |
599 | commit->util = NULL; | |
600 | } | |
601 | ||
602 | free_patch_ids(&ids); | |
603 | } | |
604 | ||
7d004199 LT |
605 | /* How many extra uninteresting commits we want to see.. */ |
606 | #define SLOP 5 | |
607 | ||
608 | static int still_interesting(struct commit_list *src, unsigned long date, int slop) | |
3131b713 | 609 | { |
7d004199 LT |
610 | /* |
611 | * No source list at all? We're definitely done.. | |
612 | */ | |
613 | if (!src) | |
614 | return 0; | |
615 | ||
616 | /* | |
617 | * Does the destination list contain entries with a date | |
618 | * before the source list? Definitely _not_ done. | |
619 | */ | |
620 | if (date < src->item->date) | |
621 | return SLOP; | |
622 | ||
623 | /* | |
624 | * Does the source list still have interesting commits in | |
625 | * it? Definitely not done.. | |
626 | */ | |
627 | if (!everybody_uninteresting(src)) | |
628 | return SLOP; | |
629 | ||
630 | /* Ok, we're closing in.. */ | |
631 | return slop-1; | |
3131b713 LT |
632 | } |
633 | ||
cc0e6c5a | 634 | static int limit_list(struct rev_info *revs) |
a4a88b2b | 635 | { |
7d004199 LT |
636 | int slop = SLOP; |
637 | unsigned long date = ~0ul; | |
a4a88b2b LT |
638 | struct commit_list *list = revs->commits; |
639 | struct commit_list *newlist = NULL; | |
640 | struct commit_list **p = &newlist; | |
641 | ||
642 | while (list) { | |
643 | struct commit_list *entry = list; | |
644 | struct commit *commit = list->item; | |
645 | struct object *obj = &commit->object; | |
cdcefbc9 | 646 | show_early_output_fn_t show; |
a4a88b2b LT |
647 | |
648 | list = list->next; | |
649 | free(entry); | |
650 | ||
651 | if (revs->max_age != -1 && (commit->date < revs->max_age)) | |
652 | obj->flags |= UNINTERESTING; | |
fce87ae5 | 653 | if (add_parents_to_list(revs, commit, &list, NULL) < 0) |
cc0e6c5a | 654 | return -1; |
a4a88b2b LT |
655 | if (obj->flags & UNINTERESTING) { |
656 | mark_parents_uninteresting(commit); | |
7d004199 LT |
657 | if (revs->show_all) |
658 | p = &commit_list_insert(commit, p)->next; | |
659 | slop = still_interesting(list, date, slop); | |
660 | if (slop) | |
3131b713 | 661 | continue; |
7d004199 LT |
662 | /* If showing all, add the whole pending list to the end */ |
663 | if (revs->show_all) | |
664 | *p = list; | |
665 | break; | |
a4a88b2b LT |
666 | } |
667 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
668 | continue; | |
7d004199 | 669 | date = commit->date; |
a4a88b2b | 670 | p = &commit_list_insert(commit, p)->next; |
cdcefbc9 LT |
671 | |
672 | show = show_early_output; | |
673 | if (!show) | |
674 | continue; | |
675 | ||
676 | show(revs, newlist); | |
677 | show_early_output = NULL; | |
a4a88b2b | 678 | } |
d7a17cad | 679 | if (revs->cherry_pick) |
36d56de6 | 680 | cherry_pick_list(newlist, revs); |
d7a17cad | 681 | |
a4a88b2b | 682 | revs->commits = newlist; |
cc0e6c5a | 683 | return 0; |
a4a88b2b LT |
684 | } |
685 | ||
63049292 JH |
686 | struct all_refs_cb { |
687 | int all_flags; | |
71b03b42 | 688 | int warned_bad_reflog; |
63049292 JH |
689 | struct rev_info *all_revs; |
690 | const char *name_for_errormsg; | |
691 | }; | |
ae563542 | 692 | |
8da19775 | 693 | static int handle_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
ae563542 | 694 | { |
63049292 JH |
695 | struct all_refs_cb *cb = cb_data; |
696 | struct object *object = get_reference(cb->all_revs, path, sha1, | |
697 | cb->all_flags); | |
3d1efd8f | 698 | add_pending_object(cb->all_revs, object, path); |
ae563542 LT |
699 | return 0; |
700 | } | |
701 | ||
a5aa930d UKK |
702 | static void handle_refs(struct rev_info *revs, unsigned flags, |
703 | int (*for_each)(each_ref_fn, void *)) | |
ae563542 | 704 | { |
63049292 JH |
705 | struct all_refs_cb cb; |
706 | cb.all_revs = revs; | |
707 | cb.all_flags = flags; | |
a5aa930d | 708 | for_each(handle_one_ref, &cb); |
63049292 JH |
709 | } |
710 | ||
71b03b42 | 711 | static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data) |
63049292 JH |
712 | { |
713 | struct all_refs_cb *cb = cb_data; | |
71b03b42 SP |
714 | if (!is_null_sha1(sha1)) { |
715 | struct object *o = parse_object(sha1); | |
716 | if (o) { | |
717 | o->flags |= cb->all_flags; | |
718 | add_pending_object(cb->all_revs, o, ""); | |
719 | } | |
720 | else if (!cb->warned_bad_reflog) { | |
46efd2d9 | 721 | warning("reflog of '%s' references pruned commits", |
71b03b42 SP |
722 | cb->name_for_errormsg); |
723 | cb->warned_bad_reflog = 1; | |
724 | } | |
63049292 | 725 | } |
71b03b42 SP |
726 | } |
727 | ||
883d60fa JS |
728 | static int handle_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
729 | const char *email, unsigned long timestamp, int tz, | |
730 | const char *message, void *cb_data) | |
71b03b42 SP |
731 | { |
732 | handle_one_reflog_commit(osha1, cb_data); | |
733 | handle_one_reflog_commit(nsha1, cb_data); | |
63049292 JH |
734 | return 0; |
735 | } | |
736 | ||
737 | static int handle_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data) | |
738 | { | |
739 | struct all_refs_cb *cb = cb_data; | |
71b03b42 | 740 | cb->warned_bad_reflog = 0; |
63049292 JH |
741 | cb->name_for_errormsg = path; |
742 | for_each_reflog_ent(path, handle_one_reflog_ent, cb_data); | |
743 | return 0; | |
744 | } | |
745 | ||
746 | static void handle_reflog(struct rev_info *revs, unsigned flags) | |
747 | { | |
748 | struct all_refs_cb cb; | |
749 | cb.all_revs = revs; | |
750 | cb.all_flags = flags; | |
25b51e2c | 751 | for_each_reflog(handle_one_reflog, &cb); |
ae563542 LT |
752 | } |
753 | ||
ea4a19e1 JH |
754 | static int add_parents_only(struct rev_info *revs, const char *arg, int flags) |
755 | { | |
756 | unsigned char sha1[20]; | |
757 | struct object *it; | |
758 | struct commit *commit; | |
759 | struct commit_list *parents; | |
760 | ||
761 | if (*arg == '^') { | |
762 | flags ^= UNINTERESTING; | |
763 | arg++; | |
764 | } | |
765 | if (get_sha1(arg, sha1)) | |
766 | return 0; | |
767 | while (1) { | |
768 | it = get_reference(revs, arg, sha1, 0); | |
1974632c | 769 | if (it->type != OBJ_TAG) |
ea4a19e1 | 770 | break; |
9684afd9 MK |
771 | if (!((struct tag*)it)->tagged) |
772 | return 0; | |
e702496e | 773 | hashcpy(sha1, ((struct tag*)it)->tagged->sha1); |
ea4a19e1 | 774 | } |
1974632c | 775 | if (it->type != OBJ_COMMIT) |
ea4a19e1 JH |
776 | return 0; |
777 | commit = (struct commit *)it; | |
778 | for (parents = commit->parents; parents; parents = parents->next) { | |
779 | it = &parents->item->object; | |
780 | it->flags |= flags; | |
781 | add_pending_object(revs, it, arg); | |
782 | } | |
783 | return 1; | |
784 | } | |
785 | ||
db6296a5 | 786 | void init_revisions(struct rev_info *revs, const char *prefix) |
8efdc326 FK |
787 | { |
788 | memset(revs, 0, sizeof(*revs)); | |
8e8f9987 | 789 | |
6b9c58f4 | 790 | revs->abbrev = DEFAULT_ABBREV; |
8e8f9987 | 791 | revs->ignore_merges = 1; |
9202434c | 792 | revs->simplify_history = 1; |
8f67f8ae PH |
793 | DIFF_OPT_SET(&revs->pruning, RECURSIVE); |
794 | DIFF_OPT_SET(&revs->pruning, QUIET); | |
cd2bdc53 LT |
795 | revs->pruning.add_remove = file_add_remove; |
796 | revs->pruning.change = file_change; | |
8efdc326 FK |
797 | revs->lifo = 1; |
798 | revs->dense = 1; | |
db6296a5 | 799 | revs->prefix = prefix; |
8efdc326 FK |
800 | revs->max_age = -1; |
801 | revs->min_age = -1; | |
d5db6c9e | 802 | revs->skip_count = -1; |
8efdc326 FK |
803 | revs->max_count = -1; |
804 | ||
cd2bdc53 LT |
805 | revs->commit_format = CMIT_FMT_DEFAULT; |
806 | ||
0843acfd JK |
807 | revs->grep_filter.status_only = 1; |
808 | revs->grep_filter.pattern_tail = &(revs->grep_filter.pattern_list); | |
809 | revs->grep_filter.regflags = REG_NEWLINE; | |
810 | ||
cd2bdc53 | 811 | diff_setup(&revs->diffopt); |
c0cb4a06 | 812 | if (prefix && !revs->diffopt.prefix) { |
cd676a51 JH |
813 | revs->diffopt.prefix = prefix; |
814 | revs->diffopt.prefix_length = strlen(prefix); | |
815 | } | |
8efdc326 FK |
816 | } |
817 | ||
0d2c9d67 RS |
818 | static void add_pending_commit_list(struct rev_info *revs, |
819 | struct commit_list *commit_list, | |
820 | unsigned int flags) | |
821 | { | |
822 | while (commit_list) { | |
823 | struct object *object = &commit_list->item->object; | |
824 | object->flags |= flags; | |
825 | add_pending_object(revs, object, sha1_to_hex(object->sha1)); | |
826 | commit_list = commit_list->next; | |
827 | } | |
828 | } | |
829 | ||
ae3e5e1e JH |
830 | static void prepare_show_merge(struct rev_info *revs) |
831 | { | |
832 | struct commit_list *bases; | |
833 | struct commit *head, *other; | |
834 | unsigned char sha1[20]; | |
835 | const char **prune = NULL; | |
836 | int i, prune_num = 1; /* counting terminating NULL */ | |
837 | ||
838 | if (get_sha1("HEAD", sha1) || !(head = lookup_commit(sha1))) | |
839 | die("--merge without HEAD?"); | |
840 | if (get_sha1("MERGE_HEAD", sha1) || !(other = lookup_commit(sha1))) | |
841 | die("--merge without MERGE_HEAD?"); | |
842 | add_pending_object(revs, &head->object, "HEAD"); | |
843 | add_pending_object(revs, &other->object, "MERGE_HEAD"); | |
844 | bases = get_merge_bases(head, other, 1); | |
e82447b1 JH |
845 | add_pending_commit_list(revs, bases, UNINTERESTING); |
846 | free_commit_list(bases); | |
847 | head->object.flags |= SYMMETRIC_LEFT; | |
ae3e5e1e JH |
848 | |
849 | if (!active_nr) | |
850 | read_cache(); | |
851 | for (i = 0; i < active_nr; i++) { | |
852 | struct cache_entry *ce = active_cache[i]; | |
853 | if (!ce_stage(ce)) | |
854 | continue; | |
855 | if (ce_path_match(ce, revs->prune_data)) { | |
856 | prune_num++; | |
857 | prune = xrealloc(prune, sizeof(*prune) * prune_num); | |
858 | prune[prune_num-2] = ce->name; | |
859 | prune[prune_num-1] = NULL; | |
860 | } | |
861 | while ((i+1 < active_nr) && | |
862 | ce_same_name(ce, active_cache[i+1])) | |
863 | i++; | |
864 | } | |
865 | revs->prune_data = prune; | |
e82447b1 | 866 | revs->limited = 1; |
ae3e5e1e JH |
867 | } |
868 | ||
5d6f0935 JH |
869 | int handle_revision_arg(const char *arg, struct rev_info *revs, |
870 | int flags, | |
871 | int cant_be_filename) | |
872 | { | |
bb6c2fba | 873 | unsigned mode; |
5d6f0935 JH |
874 | char *dotdot; |
875 | struct object *object; | |
876 | unsigned char sha1[20]; | |
877 | int local_flags; | |
878 | ||
879 | dotdot = strstr(arg, ".."); | |
880 | if (dotdot) { | |
881 | unsigned char from_sha1[20]; | |
882 | const char *next = dotdot + 2; | |
883 | const char *this = arg; | |
884 | int symmetric = *next == '.'; | |
885 | unsigned int flags_exclude = flags ^ UNINTERESTING; | |
886 | ||
887 | *dotdot = 0; | |
888 | next += symmetric; | |
889 | ||
890 | if (!*next) | |
891 | next = "HEAD"; | |
892 | if (dotdot == arg) | |
893 | this = "HEAD"; | |
894 | if (!get_sha1(this, from_sha1) && | |
895 | !get_sha1(next, sha1)) { | |
896 | struct commit *a, *b; | |
897 | struct commit_list *exclude; | |
898 | ||
899 | a = lookup_commit_reference(from_sha1); | |
900 | b = lookup_commit_reference(sha1); | |
901 | if (!a || !b) { | |
902 | die(symmetric ? | |
903 | "Invalid symmetric difference expression %s...%s" : | |
904 | "Invalid revision range %s..%s", | |
905 | arg, next); | |
906 | } | |
907 | ||
908 | if (!cant_be_filename) { | |
909 | *dotdot = '.'; | |
910 | verify_non_filename(revs->prefix, arg); | |
911 | } | |
912 | ||
913 | if (symmetric) { | |
914 | exclude = get_merge_bases(a, b, 1); | |
915 | add_pending_commit_list(revs, exclude, | |
916 | flags_exclude); | |
917 | free_commit_list(exclude); | |
577ed5c2 | 918 | a->object.flags |= flags | SYMMETRIC_LEFT; |
5d6f0935 JH |
919 | } else |
920 | a->object.flags |= flags_exclude; | |
921 | b->object.flags |= flags; | |
922 | add_pending_object(revs, &a->object, this); | |
923 | add_pending_object(revs, &b->object, next); | |
924 | return 0; | |
925 | } | |
926 | *dotdot = '.'; | |
927 | } | |
928 | dotdot = strstr(arg, "^@"); | |
929 | if (dotdot && !dotdot[2]) { | |
930 | *dotdot = 0; | |
931 | if (add_parents_only(revs, arg, flags)) | |
932 | return 0; | |
933 | *dotdot = '^'; | |
934 | } | |
62476c8e JH |
935 | dotdot = strstr(arg, "^!"); |
936 | if (dotdot && !dotdot[2]) { | |
937 | *dotdot = 0; | |
938 | if (!add_parents_only(revs, arg, flags ^ UNINTERESTING)) | |
939 | *dotdot = '^'; | |
940 | } | |
941 | ||
5d6f0935 JH |
942 | local_flags = 0; |
943 | if (*arg == '^') { | |
944 | local_flags = UNINTERESTING; | |
945 | arg++; | |
946 | } | |
bb6c2fba | 947 | if (get_sha1_with_mode(arg, sha1, &mode)) |
5d6f0935 JH |
948 | return -1; |
949 | if (!cant_be_filename) | |
950 | verify_non_filename(revs->prefix, arg); | |
951 | object = get_reference(revs, arg, sha1, flags ^ local_flags); | |
bb6c2fba | 952 | add_pending_object_with_mode(revs, object, arg, mode); |
5d6f0935 JH |
953 | return 0; |
954 | } | |
955 | ||
1fc561d1 AB |
956 | void read_revisions_from_stdin(struct rev_info *revs) |
957 | { | |
958 | char line[1000]; | |
959 | ||
960 | while (fgets(line, sizeof(line), stdin) != NULL) { | |
961 | int len = strlen(line); | |
962 | if (len && line[len - 1] == '\n') | |
963 | line[--len] = '\0'; | |
964 | if (!len) | |
965 | break; | |
966 | if (line[0] == '-') | |
967 | die("options not supported in --stdin mode"); | |
968 | if (handle_revision_arg(line, revs, 0, 1)) | |
969 | die("bad revision '%s'", line); | |
970 | } | |
971 | } | |
972 | ||
2d10c555 | 973 | static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what) |
bd95fcd3 | 974 | { |
0843acfd | 975 | append_grep_pattern(&revs->grep_filter, ptn, "command line", 0, what); |
2d10c555 JH |
976 | } |
977 | ||
a4d7d2c6 | 978 | static void add_header_grep(struct rev_info *revs, enum grep_header_field field, const char *pattern) |
2d10c555 | 979 | { |
a4d7d2c6 | 980 | append_header_grep_pattern(&revs->grep_filter, field, pattern); |
bd95fcd3 JH |
981 | } |
982 | ||
983 | static void add_message_grep(struct rev_info *revs, const char *pattern) | |
984 | { | |
2d10c555 | 985 | add_grep(revs, pattern, GREP_PATTERN_BODY); |
bd95fcd3 JH |
986 | } |
987 | ||
6b61ec05 PH |
988 | static int handle_revision_opt(struct rev_info *revs, int argc, const char **argv, |
989 | int *unkc, const char **unkv) | |
02e54220 PH |
990 | { |
991 | const char *arg = argv[0]; | |
992 | ||
993 | /* pseudo revision arguments */ | |
994 | if (!strcmp(arg, "--all") || !strcmp(arg, "--branches") || | |
995 | !strcmp(arg, "--tags") || !strcmp(arg, "--remotes") || | |
996 | !strcmp(arg, "--reflog") || !strcmp(arg, "--not") || | |
997 | !strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk")) | |
998 | { | |
999 | unkv[(*unkc)++] = arg; | |
0fe8c138 | 1000 | return 1; |
02e54220 PH |
1001 | } |
1002 | ||
1003 | if (!prefixcmp(arg, "--max-count=")) { | |
1004 | revs->max_count = atoi(arg + 12); | |
1005 | } else if (!prefixcmp(arg, "--skip=")) { | |
1006 | revs->skip_count = atoi(arg + 7); | |
1007 | } else if ((*arg == '-') && isdigit(arg[1])) { | |
1008 | /* accept -<digit>, like traditional "head" */ | |
1009 | revs->max_count = atoi(arg + 1); | |
1010 | } else if (!strcmp(arg, "-n")) { | |
1011 | if (argc <= 1) | |
1012 | return error("-n requires an argument"); | |
1013 | revs->max_count = atoi(argv[1]); | |
1014 | return 2; | |
1015 | } else if (!prefixcmp(arg, "-n")) { | |
1016 | revs->max_count = atoi(arg + 2); | |
1017 | } else if (!prefixcmp(arg, "--max-age=")) { | |
1018 | revs->max_age = atoi(arg + 10); | |
1019 | } else if (!prefixcmp(arg, "--since=")) { | |
1020 | revs->max_age = approxidate(arg + 8); | |
1021 | } else if (!prefixcmp(arg, "--after=")) { | |
1022 | revs->max_age = approxidate(arg + 8); | |
1023 | } else if (!prefixcmp(arg, "--min-age=")) { | |
1024 | revs->min_age = atoi(arg + 10); | |
1025 | } else if (!prefixcmp(arg, "--before=")) { | |
1026 | revs->min_age = approxidate(arg + 9); | |
1027 | } else if (!prefixcmp(arg, "--until=")) { | |
1028 | revs->min_age = approxidate(arg + 8); | |
1029 | } else if (!strcmp(arg, "--first-parent")) { | |
1030 | revs->first_parent_only = 1; | |
1031 | } else if (!strcmp(arg, "-g") || !strcmp(arg, "--walk-reflogs")) { | |
1032 | init_reflog_walk(&revs->reflog_info); | |
1033 | } else if (!strcmp(arg, "--default")) { | |
1034 | if (argc <= 1) | |
1035 | return error("bad --default argument"); | |
1036 | revs->def = argv[1]; | |
1037 | return 2; | |
1038 | } else if (!strcmp(arg, "--merge")) { | |
1039 | revs->show_merge = 1; | |
1040 | } else if (!strcmp(arg, "--topo-order")) { | |
1041 | revs->lifo = 1; | |
1042 | revs->topo_order = 1; | |
6546b593 JH |
1043 | } else if (!strcmp(arg, "--simplify-merges")) { |
1044 | revs->simplify_merges = 1; | |
1045 | revs->rewrite_parents = 1; | |
1046 | revs->simplify_history = 0; | |
1047 | revs->limited = 1; | |
78892e32 LT |
1048 | } else if (!strcmp(arg, "--simplify-by-decoration")) { |
1049 | revs->simplify_merges = 1; | |
1050 | revs->rewrite_parents = 1; | |
1051 | revs->simplify_history = 0; | |
1052 | revs->simplify_by_decoration = 1; | |
1053 | revs->limited = 1; | |
1054 | revs->prune = 1; | |
33e7018c | 1055 | load_ref_decorations(DECORATE_SHORT_REFS); |
02e54220 PH |
1056 | } else if (!strcmp(arg, "--date-order")) { |
1057 | revs->lifo = 0; | |
1058 | revs->topo_order = 1; | |
1059 | } else if (!prefixcmp(arg, "--early-output")) { | |
1060 | int count = 100; | |
1061 | switch (arg[14]) { | |
1062 | case '=': | |
1063 | count = atoi(arg+15); | |
1064 | /* Fallthrough */ | |
1065 | case 0: | |
1066 | revs->topo_order = 1; | |
1067 | revs->early_output = count; | |
1068 | } | |
1069 | } else if (!strcmp(arg, "--parents")) { | |
1070 | revs->rewrite_parents = 1; | |
1071 | revs->print_parents = 1; | |
1072 | } else if (!strcmp(arg, "--dense")) { | |
1073 | revs->dense = 1; | |
1074 | } else if (!strcmp(arg, "--sparse")) { | |
1075 | revs->dense = 0; | |
1076 | } else if (!strcmp(arg, "--show-all")) { | |
1077 | revs->show_all = 1; | |
1078 | } else if (!strcmp(arg, "--remove-empty")) { | |
1079 | revs->remove_empty_trees = 1; | |
b8e8db28 LT |
1080 | } else if (!strcmp(arg, "--merges")) { |
1081 | revs->merges_only = 1; | |
02e54220 PH |
1082 | } else if (!strcmp(arg, "--no-merges")) { |
1083 | revs->no_merges = 1; | |
1084 | } else if (!strcmp(arg, "--boundary")) { | |
1085 | revs->boundary = 1; | |
1086 | } else if (!strcmp(arg, "--left-right")) { | |
1087 | revs->left_right = 1; | |
1088 | } else if (!strcmp(arg, "--cherry-pick")) { | |
1089 | revs->cherry_pick = 1; | |
1090 | revs->limited = 1; | |
1091 | } else if (!strcmp(arg, "--objects")) { | |
1092 | revs->tag_objects = 1; | |
1093 | revs->tree_objects = 1; | |
1094 | revs->blob_objects = 1; | |
1095 | } else if (!strcmp(arg, "--objects-edge")) { | |
1096 | revs->tag_objects = 1; | |
1097 | revs->tree_objects = 1; | |
1098 | revs->blob_objects = 1; | |
1099 | revs->edge_hint = 1; | |
1100 | } else if (!strcmp(arg, "--unpacked")) { | |
1101 | revs->unpacked = 1; | |
03a9683d JH |
1102 | } else if (!prefixcmp(arg, "--unpacked=")) { |
1103 | die("--unpacked=<packfile> no longer supported."); | |
02e54220 PH |
1104 | } else if (!strcmp(arg, "-r")) { |
1105 | revs->diff = 1; | |
1106 | DIFF_OPT_SET(&revs->diffopt, RECURSIVE); | |
1107 | } else if (!strcmp(arg, "-t")) { | |
1108 | revs->diff = 1; | |
1109 | DIFF_OPT_SET(&revs->diffopt, RECURSIVE); | |
1110 | DIFF_OPT_SET(&revs->diffopt, TREE_IN_RECURSIVE); | |
1111 | } else if (!strcmp(arg, "-m")) { | |
1112 | revs->ignore_merges = 0; | |
1113 | } else if (!strcmp(arg, "-c")) { | |
1114 | revs->diff = 1; | |
1115 | revs->dense_combined_merges = 0; | |
1116 | revs->combine_merges = 1; | |
1117 | } else if (!strcmp(arg, "--cc")) { | |
1118 | revs->diff = 1; | |
1119 | revs->dense_combined_merges = 1; | |
1120 | revs->combine_merges = 1; | |
1121 | } else if (!strcmp(arg, "-v")) { | |
1122 | revs->verbose_header = 1; | |
1123 | } else if (!strcmp(arg, "--pretty")) { | |
1124 | revs->verbose_header = 1; | |
1125 | get_commit_format(arg+8, revs); | |
3a4c1a5e | 1126 | } else if (!prefixcmp(arg, "--pretty=") || !prefixcmp(arg, "--format=")) { |
02e54220 PH |
1127 | revs->verbose_header = 1; |
1128 | get_commit_format(arg+9, revs); | |
de84accc NS |
1129 | } else if (!strcmp(arg, "--oneline")) { |
1130 | revs->verbose_header = 1; | |
1131 | get_commit_format("oneline", revs); | |
1132 | revs->abbrev_commit = 1; | |
02e54220 PH |
1133 | } else if (!strcmp(arg, "--graph")) { |
1134 | revs->topo_order = 1; | |
1135 | revs->rewrite_parents = 1; | |
1136 | revs->graph = graph_init(revs); | |
1137 | } else if (!strcmp(arg, "--root")) { | |
1138 | revs->show_root_diff = 1; | |
1139 | } else if (!strcmp(arg, "--no-commit-id")) { | |
1140 | revs->no_commit_id = 1; | |
1141 | } else if (!strcmp(arg, "--always")) { | |
1142 | revs->always_show_header = 1; | |
1143 | } else if (!strcmp(arg, "--no-abbrev")) { | |
1144 | revs->abbrev = 0; | |
1145 | } else if (!strcmp(arg, "--abbrev")) { | |
1146 | revs->abbrev = DEFAULT_ABBREV; | |
1147 | } else if (!prefixcmp(arg, "--abbrev=")) { | |
1148 | revs->abbrev = strtoul(arg + 9, NULL, 10); | |
1149 | if (revs->abbrev < MINIMUM_ABBREV) | |
1150 | revs->abbrev = MINIMUM_ABBREV; | |
1151 | else if (revs->abbrev > 40) | |
1152 | revs->abbrev = 40; | |
1153 | } else if (!strcmp(arg, "--abbrev-commit")) { | |
1154 | revs->abbrev_commit = 1; | |
1155 | } else if (!strcmp(arg, "--full-diff")) { | |
1156 | revs->diff = 1; | |
1157 | revs->full_diff = 1; | |
1158 | } else if (!strcmp(arg, "--full-history")) { | |
1159 | revs->simplify_history = 0; | |
1160 | } else if (!strcmp(arg, "--relative-date")) { | |
1161 | revs->date_mode = DATE_RELATIVE; | |
1162 | } else if (!strncmp(arg, "--date=", 7)) { | |
1163 | revs->date_mode = parse_date_format(arg + 7); | |
1164 | } else if (!strcmp(arg, "--log-size")) { | |
1165 | revs->show_log_size = 1; | |
1166 | } | |
1167 | /* | |
1168 | * Grepping the commit log | |
1169 | */ | |
1170 | else if (!prefixcmp(arg, "--author=")) { | |
a4d7d2c6 | 1171 | add_header_grep(revs, GREP_HEADER_AUTHOR, arg+9); |
02e54220 | 1172 | } else if (!prefixcmp(arg, "--committer=")) { |
a4d7d2c6 | 1173 | add_header_grep(revs, GREP_HEADER_COMMITTER, arg+12); |
02e54220 PH |
1174 | } else if (!prefixcmp(arg, "--grep=")) { |
1175 | add_message_grep(revs, arg+7); | |
1176 | } else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) { | |
0843acfd | 1177 | revs->grep_filter.regflags |= REG_EXTENDED; |
02e54220 | 1178 | } else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) { |
0843acfd | 1179 | revs->grep_filter.regflags |= REG_ICASE; |
02e54220 | 1180 | } else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) { |
0843acfd | 1181 | revs->grep_filter.fixed = 1; |
02e54220 | 1182 | } else if (!strcmp(arg, "--all-match")) { |
0843acfd | 1183 | revs->grep_filter.all_match = 1; |
02e54220 PH |
1184 | } else if (!prefixcmp(arg, "--encoding=")) { |
1185 | arg += 11; | |
1186 | if (strcmp(arg, "none")) | |
1187 | git_log_output_encoding = xstrdup(arg); | |
1188 | else | |
1189 | git_log_output_encoding = ""; | |
1190 | } else if (!strcmp(arg, "--reverse")) { | |
1191 | revs->reverse ^= 1; | |
1192 | } else if (!strcmp(arg, "--children")) { | |
1193 | revs->children.name = "children"; | |
1194 | revs->limited = 1; | |
1195 | } else { | |
1196 | int opts = diff_opt_parse(&revs->diffopt, argv, argc); | |
1197 | if (!opts) | |
1198 | unkv[(*unkc)++] = arg; | |
1199 | return opts; | |
1200 | } | |
1201 | ||
1202 | return 1; | |
1203 | } | |
1204 | ||
6b61ec05 PH |
1205 | void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx, |
1206 | const struct option *options, | |
1207 | const char * const usagestr[]) | |
1208 | { | |
1209 | int n = handle_revision_opt(revs, ctx->argc, ctx->argv, | |
1210 | &ctx->cpidx, ctx->out); | |
1211 | if (n <= 0) { | |
1212 | error("unknown option `%s'", ctx->argv[0]); | |
1213 | usage_with_options(usagestr, options); | |
1214 | } | |
1215 | ctx->argv += n; | |
1216 | ctx->argc -= n; | |
1217 | } | |
1218 | ||
ae563542 LT |
1219 | /* |
1220 | * Parse revision information, filling in the "rev_info" structure, | |
1221 | * and removing the used arguments from the argument list. | |
1222 | * | |
765ac8ec LT |
1223 | * Returns the number of arguments left that weren't recognized |
1224 | * (which are also moved to the head of the argument list) | |
ae563542 | 1225 | */ |
a4a88b2b | 1226 | int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def) |
ae563542 | 1227 | { |
02e54220 | 1228 | int i, flags, left, seen_dashdash; |
ae563542 | 1229 | |
ae563542 LT |
1230 | /* First, search for "--" */ |
1231 | seen_dashdash = 0; | |
1232 | for (i = 1; i < argc; i++) { | |
1233 | const char *arg = argv[i]; | |
1234 | if (strcmp(arg, "--")) | |
1235 | continue; | |
1236 | argv[i] = NULL; | |
1237 | argc = i; | |
a65f2005 JH |
1238 | if (argv[i + 1]) |
1239 | revs->prune_data = get_pathspec(revs->prefix, argv + i + 1); | |
ae563542 LT |
1240 | seen_dashdash = 1; |
1241 | break; | |
1242 | } | |
1243 | ||
02e54220 PH |
1244 | /* Second, deal with arguments and options */ |
1245 | flags = 0; | |
1246 | for (left = i = 1; i < argc; i++) { | |
ae563542 | 1247 | const char *arg = argv[i]; |
ae563542 | 1248 | if (*arg == '-') { |
cd2bdc53 | 1249 | int opts; |
02e54220 | 1250 | |
ae563542 | 1251 | if (!strcmp(arg, "--all")) { |
a5aa930d | 1252 | handle_refs(revs, flags, for_each_ref); |
f0298cf1 | 1253 | handle_refs(revs, flags, head_ref); |
a5aa930d UKK |
1254 | continue; |
1255 | } | |
1256 | if (!strcmp(arg, "--branches")) { | |
1257 | handle_refs(revs, flags, for_each_branch_ref); | |
1258 | continue; | |
1259 | } | |
1260 | if (!strcmp(arg, "--tags")) { | |
1261 | handle_refs(revs, flags, for_each_tag_ref); | |
1262 | continue; | |
1263 | } | |
1264 | if (!strcmp(arg, "--remotes")) { | |
1265 | handle_refs(revs, flags, for_each_remote_ref); | |
ae563542 LT |
1266 | continue; |
1267 | } | |
63049292 JH |
1268 | if (!strcmp(arg, "--reflog")) { |
1269 | handle_reflog(revs, flags); | |
1270 | continue; | |
1271 | } | |
ae563542 LT |
1272 | if (!strcmp(arg, "--not")) { |
1273 | flags ^= UNINTERESTING; | |
1274 | continue; | |
1275 | } | |
8e64006e JS |
1276 | if (!strcmp(arg, "--no-walk")) { |
1277 | revs->no_walk = 1; | |
1278 | continue; | |
1279 | } | |
1280 | if (!strcmp(arg, "--do-walk")) { | |
1281 | revs->no_walk = 0; | |
1282 | continue; | |
1283 | } | |
2d10c555 | 1284 | |
02e54220 | 1285 | opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv); |
cd2bdc53 | 1286 | if (opts > 0) { |
cd2bdc53 LT |
1287 | i += opts - 1; |
1288 | continue; | |
1289 | } | |
02e54220 PH |
1290 | if (opts < 0) |
1291 | exit(128); | |
ae563542 LT |
1292 | continue; |
1293 | } | |
ae563542 | 1294 | |
5d6f0935 JH |
1295 | if (handle_revision_arg(arg, revs, flags, seen_dashdash)) { |
1296 | int j; | |
1297 | if (seen_dashdash || *arg == '^') | |
ae563542 LT |
1298 | die("bad revision '%s'", arg); |
1299 | ||
ea92f41f JH |
1300 | /* If we didn't have a "--": |
1301 | * (1) all filenames must exist; | |
1302 | * (2) all rev-args must not be interpretable | |
1303 | * as a valid filename. | |
1304 | * but the latter we have checked in the main loop. | |
1305 | */ | |
e23d0b4a LT |
1306 | for (j = i; j < argc; j++) |
1307 | verify_filename(revs->prefix, argv[j]); | |
1308 | ||
5d6f0935 JH |
1309 | revs->prune_data = get_pathspec(revs->prefix, |
1310 | argv + i); | |
ae563542 LT |
1311 | break; |
1312 | } | |
ae563542 | 1313 | } |
5d6f0935 | 1314 | |
02e54220 PH |
1315 | if (revs->def == NULL) |
1316 | revs->def = def; | |
1317 | if (revs->show_merge) | |
ae3e5e1e | 1318 | prepare_show_merge(revs); |
02e54220 | 1319 | if (revs->def && !revs->pending.nr) { |
ae563542 | 1320 | unsigned char sha1[20]; |
cd2bdc53 | 1321 | struct object *object; |
bb6c2fba | 1322 | unsigned mode; |
02e54220 PH |
1323 | if (get_sha1_with_mode(revs->def, sha1, &mode)) |
1324 | die("bad default revision '%s'", revs->def); | |
1325 | object = get_reference(revs, revs->def, sha1, 0); | |
1326 | add_pending_object_with_mode(revs, object, revs->def, mode); | |
ae563542 | 1327 | } |
8efdc326 | 1328 | |
b7bb760d LT |
1329 | /* Did the user ask for any diff output? Run the diff! */ |
1330 | if (revs->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) | |
1331 | revs->diff = 1; | |
1332 | ||
0faf2da7 AL |
1333 | /* Pickaxe, diff-filter and rename following need diffs */ |
1334 | if (revs->diffopt.pickaxe || | |
1335 | revs->diffopt.filter || | |
1336 | DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES)) | |
b7bb760d LT |
1337 | revs->diff = 1; |
1338 | ||
9dad9d2e | 1339 | if (revs->topo_order) |
53069686 JH |
1340 | revs->limited = 1; |
1341 | ||
8efdc326 | 1342 | if (revs->prune_data) { |
cd2bdc53 | 1343 | diff_tree_setup_paths(revs->prune_data, &revs->pruning); |
750f7b66 | 1344 | /* Can't prune commits with rename following: the paths change.. */ |
8f67f8ae | 1345 | if (!DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES)) |
53b2c823 | 1346 | revs->prune = 1; |
cd2bdc53 LT |
1347 | if (!revs->full_diff) |
1348 | diff_tree_setup_paths(revs->prune_data, &revs->diffopt); | |
8efdc326 | 1349 | } |
cd2bdc53 LT |
1350 | if (revs->combine_merges) { |
1351 | revs->ignore_merges = 0; | |
0e677e1a | 1352 | if (revs->dense_combined_merges && !revs->diffopt.output_format) |
cd2bdc53 LT |
1353 | revs->diffopt.output_format = DIFF_FORMAT_PATCH; |
1354 | } | |
cd2bdc53 | 1355 | revs->diffopt.abbrev = revs->abbrev; |
72ee96c0 JH |
1356 | if (diff_setup_done(&revs->diffopt) < 0) |
1357 | die("diff_setup_done failed"); | |
8efdc326 | 1358 | |
0843acfd | 1359 | compile_grep_patterns(&revs->grep_filter); |
bd95fcd3 | 1360 | |
d56651c0 SP |
1361 | if (revs->reverse && revs->reflog_info) |
1362 | die("cannot combine --reverse with --walk-reflogs"); | |
8bb65883 | 1363 | if (revs->rewrite_parents && revs->children.name) |
f35f5603 | 1364 | die("cannot combine --parents and --children"); |
d56651c0 | 1365 | |
7fefda5c AS |
1366 | /* |
1367 | * Limitations on the graph functionality | |
1368 | */ | |
1369 | if (revs->reverse && revs->graph) | |
1370 | die("cannot combine --reverse with --graph"); | |
1371 | ||
1372 | if (revs->reflog_info && revs->graph) | |
1373 | die("cannot combine --walk-reflogs with --graph"); | |
1374 | ||
ae563542 LT |
1375 | return left; |
1376 | } | |
a4a88b2b | 1377 | |
f35f5603 JH |
1378 | static void add_child(struct rev_info *revs, struct commit *parent, struct commit *child) |
1379 | { | |
1380 | struct commit_list *l = xcalloc(1, sizeof(*l)); | |
1381 | ||
1382 | l->item = child; | |
1383 | l->next = add_decoration(&revs->children, &parent->object, l); | |
1384 | } | |
1385 | ||
6546b593 JH |
1386 | static int remove_duplicate_parents(struct commit *commit) |
1387 | { | |
1388 | struct commit_list **pp, *p; | |
1389 | int surviving_parents; | |
1390 | ||
1391 | /* Examine existing parents while marking ones we have seen... */ | |
1392 | pp = &commit->parents; | |
1393 | while ((p = *pp) != NULL) { | |
1394 | struct commit *parent = p->item; | |
1395 | if (parent->object.flags & TMP_MARK) { | |
1396 | *pp = p->next; | |
1397 | continue; | |
1398 | } | |
1399 | parent->object.flags |= TMP_MARK; | |
1400 | pp = &p->next; | |
1401 | } | |
1402 | /* count them while clearing the temporary mark */ | |
1403 | surviving_parents = 0; | |
1404 | for (p = commit->parents; p; p = p->next) { | |
1405 | p->item->object.flags &= ~TMP_MARK; | |
1406 | surviving_parents++; | |
1407 | } | |
1408 | return surviving_parents; | |
1409 | } | |
1410 | ||
faf0156b JH |
1411 | struct merge_simplify_state { |
1412 | struct commit *simplified; | |
1413 | }; | |
1414 | ||
1415 | static struct merge_simplify_state *locate_simplify_state(struct rev_info *revs, struct commit *commit) | |
1416 | { | |
1417 | struct merge_simplify_state *st; | |
1418 | ||
1419 | st = lookup_decoration(&revs->merge_simplification, &commit->object); | |
1420 | if (!st) { | |
1421 | st = xcalloc(1, sizeof(*st)); | |
1422 | add_decoration(&revs->merge_simplification, &commit->object, st); | |
1423 | } | |
1424 | return st; | |
1425 | } | |
1426 | ||
1427 | static struct commit_list **simplify_one(struct rev_info *revs, struct commit *commit, struct commit_list **tail) | |
6546b593 JH |
1428 | { |
1429 | struct commit_list *p; | |
faf0156b | 1430 | struct merge_simplify_state *st, *pst; |
6546b593 JH |
1431 | int cnt; |
1432 | ||
faf0156b JH |
1433 | st = locate_simplify_state(revs, commit); |
1434 | ||
6546b593 | 1435 | /* |
6546b593 JH |
1436 | * Have we handled this one? |
1437 | */ | |
faf0156b | 1438 | if (st->simplified) |
6546b593 JH |
1439 | return tail; |
1440 | ||
1441 | /* | |
1442 | * An UNINTERESTING commit simplifies to itself, so does a | |
1443 | * root commit. We do not rewrite parents of such commit | |
1444 | * anyway. | |
1445 | */ | |
1446 | if ((commit->object.flags & UNINTERESTING) || !commit->parents) { | |
faf0156b | 1447 | st->simplified = commit; |
6546b593 JH |
1448 | return tail; |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Do we know what commit all of our parents should be rewritten to? | |
1453 | * Otherwise we are not ready to rewrite this one yet. | |
1454 | */ | |
1455 | for (cnt = 0, p = commit->parents; p; p = p->next) { | |
faf0156b JH |
1456 | pst = locate_simplify_state(revs, p->item); |
1457 | if (!pst->simplified) { | |
6546b593 JH |
1458 | tail = &commit_list_insert(p->item, tail)->next; |
1459 | cnt++; | |
1460 | } | |
1461 | } | |
53030f8d JH |
1462 | if (cnt) { |
1463 | tail = &commit_list_insert(commit, tail)->next; | |
6546b593 | 1464 | return tail; |
53030f8d | 1465 | } |
6546b593 JH |
1466 | |
1467 | /* | |
1468 | * Rewrite our list of parents. | |
1469 | */ | |
faf0156b JH |
1470 | for (p = commit->parents; p; p = p->next) { |
1471 | pst = locate_simplify_state(revs, p->item); | |
1472 | p->item = pst->simplified; | |
1473 | } | |
6546b593 JH |
1474 | cnt = remove_duplicate_parents(commit); |
1475 | ||
1476 | /* | |
1477 | * It is possible that we are a merge and one side branch | |
1478 | * does not have any commit that touches the given paths; | |
1479 | * in such a case, the immediate parents will be rewritten | |
1480 | * to different commits. | |
1481 | * | |
1482 | * o----X X: the commit we are looking at; | |
1483 | * / / o: a commit that touches the paths; | |
1484 | * ---o----' | |
1485 | * | |
1486 | * Further reduce the parents by removing redundant parents. | |
1487 | */ | |
1488 | if (1 < cnt) { | |
1489 | struct commit_list *h = reduce_heads(commit->parents); | |
1490 | cnt = commit_list_count(h); | |
1491 | free_commit_list(commit->parents); | |
1492 | commit->parents = h; | |
1493 | } | |
1494 | ||
1495 | /* | |
1496 | * A commit simplifies to itself if it is a root, if it is | |
1497 | * UNINTERESTING, if it touches the given paths, or if it is a | |
1498 | * merge and its parents simplifies to more than one commits | |
1499 | * (the first two cases are already handled at the beginning of | |
1500 | * this function). | |
1501 | * | |
1502 | * Otherwise, it simplifies to what its sole parent simplifies to. | |
1503 | */ | |
1504 | if (!cnt || | |
1505 | (commit->object.flags & UNINTERESTING) || | |
1506 | !(commit->object.flags & TREESAME) || | |
1507 | (1 < cnt)) | |
faf0156b JH |
1508 | st->simplified = commit; |
1509 | else { | |
1510 | pst = locate_simplify_state(revs, commit->parents->item); | |
1511 | st->simplified = pst->simplified; | |
1512 | } | |
6546b593 JH |
1513 | return tail; |
1514 | } | |
1515 | ||
1516 | static void simplify_merges(struct rev_info *revs) | |
1517 | { | |
1518 | struct commit_list *list; | |
1519 | struct commit_list *yet_to_do, **tail; | |
1520 | ||
5eac739e JH |
1521 | if (!revs->topo_order) |
1522 | sort_in_topological_order(&revs->commits, revs->lifo); | |
1523 | if (!revs->prune) | |
1524 | return; | |
65347030 | 1525 | |
6546b593 JH |
1526 | /* feed the list reversed */ |
1527 | yet_to_do = NULL; | |
1528 | for (list = revs->commits; list; list = list->next) | |
1529 | commit_list_insert(list->item, &yet_to_do); | |
1530 | while (yet_to_do) { | |
1531 | list = yet_to_do; | |
1532 | yet_to_do = NULL; | |
1533 | tail = &yet_to_do; | |
1534 | while (list) { | |
1535 | struct commit *commit = list->item; | |
1536 | struct commit_list *next = list->next; | |
1537 | free(list); | |
1538 | list = next; | |
faf0156b | 1539 | tail = simplify_one(revs, commit, tail); |
6546b593 JH |
1540 | } |
1541 | } | |
1542 | ||
1543 | /* clean up the result, removing the simplified ones */ | |
1544 | list = revs->commits; | |
1545 | revs->commits = NULL; | |
1546 | tail = &revs->commits; | |
1547 | while (list) { | |
1548 | struct commit *commit = list->item; | |
1549 | struct commit_list *next = list->next; | |
faf0156b | 1550 | struct merge_simplify_state *st; |
6546b593 JH |
1551 | free(list); |
1552 | list = next; | |
faf0156b JH |
1553 | st = locate_simplify_state(revs, commit); |
1554 | if (st->simplified == commit) | |
6546b593 JH |
1555 | tail = &commit_list_insert(commit, tail)->next; |
1556 | } | |
6546b593 JH |
1557 | } |
1558 | ||
f35f5603 JH |
1559 | static void set_children(struct rev_info *revs) |
1560 | { | |
1561 | struct commit_list *l; | |
1562 | for (l = revs->commits; l; l = l->next) { | |
1563 | struct commit *commit = l->item; | |
1564 | struct commit_list *p; | |
1565 | ||
1566 | for (p = commit->parents; p; p = p->next) | |
1567 | add_child(revs, p->item, commit); | |
1568 | } | |
1569 | } | |
1570 | ||
cc0e6c5a | 1571 | int prepare_revision_walk(struct rev_info *revs) |
a4a88b2b | 1572 | { |
1f1e895f | 1573 | int nr = revs->pending.nr; |
94d23673 | 1574 | struct object_array_entry *e, *list; |
cd2bdc53 | 1575 | |
94d23673 | 1576 | e = list = revs->pending.objects; |
1f1e895f LT |
1577 | revs->pending.nr = 0; |
1578 | revs->pending.alloc = 0; | |
1579 | revs->pending.objects = NULL; | |
1580 | while (--nr >= 0) { | |
94d23673 | 1581 | struct commit *commit = handle_commit(revs, e->item, e->name); |
cd2bdc53 LT |
1582 | if (commit) { |
1583 | if (!(commit->object.flags & SEEN)) { | |
1584 | commit->object.flags |= SEEN; | |
1585 | insert_by_date(commit, &revs->commits); | |
1586 | } | |
1587 | } | |
94d23673 | 1588 | e++; |
cd2bdc53 | 1589 | } |
94d23673 | 1590 | free(list); |
cd2bdc53 | 1591 | |
ba1d4505 | 1592 | if (revs->no_walk) |
cc0e6c5a | 1593 | return 0; |
a4a88b2b | 1594 | if (revs->limited) |
cc0e6c5a AR |
1595 | if (limit_list(revs) < 0) |
1596 | return -1; | |
a4a88b2b | 1597 | if (revs->topo_order) |
23c17d4a | 1598 | sort_in_topological_order(&revs->commits, revs->lifo); |
6546b593 JH |
1599 | if (revs->simplify_merges) |
1600 | simplify_merges(revs); | |
f35f5603 JH |
1601 | if (revs->children.name) |
1602 | set_children(revs); | |
cc0e6c5a | 1603 | return 0; |
a4a88b2b LT |
1604 | } |
1605 | ||
cc0e6c5a AR |
1606 | enum rewrite_result { |
1607 | rewrite_one_ok, | |
1608 | rewrite_one_noparents, | |
1609 | rewrite_one_error, | |
1610 | }; | |
1611 | ||
1612 | static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp) | |
765ac8ec | 1613 | { |
fce87ae5 AG |
1614 | struct commit_list *cache = NULL; |
1615 | ||
765ac8ec LT |
1616 | for (;;) { |
1617 | struct commit *p = *pp; | |
3381c790 | 1618 | if (!revs->limited) |
fce87ae5 | 1619 | if (add_parents_to_list(revs, p, &revs->commits, &cache) < 0) |
cc0e6c5a | 1620 | return rewrite_one_error; |
6631c736 | 1621 | if (p->parents && p->parents->next) |
cc0e6c5a | 1622 | return rewrite_one_ok; |
7dc0fe3b LT |
1623 | if (p->object.flags & UNINTERESTING) |
1624 | return rewrite_one_ok; | |
1625 | if (!(p->object.flags & TREESAME)) | |
cc0e6c5a | 1626 | return rewrite_one_ok; |
765ac8ec | 1627 | if (!p->parents) |
cc0e6c5a | 1628 | return rewrite_one_noparents; |
765ac8ec LT |
1629 | *pp = p->parents->item; |
1630 | } | |
1631 | } | |
1632 | ||
cc0e6c5a | 1633 | static int rewrite_parents(struct rev_info *revs, struct commit *commit) |
765ac8ec LT |
1634 | { |
1635 | struct commit_list **pp = &commit->parents; | |
1636 | while (*pp) { | |
1637 | struct commit_list *parent = *pp; | |
cc0e6c5a AR |
1638 | switch (rewrite_one(revs, &parent->item)) { |
1639 | case rewrite_one_ok: | |
1640 | break; | |
1641 | case rewrite_one_noparents: | |
765ac8ec LT |
1642 | *pp = parent->next; |
1643 | continue; | |
cc0e6c5a AR |
1644 | case rewrite_one_error: |
1645 | return -1; | |
765ac8ec LT |
1646 | } |
1647 | pp = &parent->next; | |
1648 | } | |
11d65967 | 1649 | remove_duplicate_parents(commit); |
cc0e6c5a | 1650 | return 0; |
765ac8ec LT |
1651 | } |
1652 | ||
8ecae9b0 JH |
1653 | static int commit_match(struct commit *commit, struct rev_info *opt) |
1654 | { | |
0843acfd | 1655 | if (!opt->grep_filter.pattern_list) |
8ecae9b0 | 1656 | return 1; |
0843acfd | 1657 | return grep_buffer(&opt->grep_filter, |
2d10c555 JH |
1658 | NULL, /* we say nothing, not even filename */ |
1659 | commit->buffer, strlen(commit->buffer)); | |
8ecae9b0 JH |
1660 | } |
1661 | ||
f35f5603 JH |
1662 | static inline int want_ancestry(struct rev_info *revs) |
1663 | { | |
8bb65883 | 1664 | return (revs->rewrite_parents || revs->children.name); |
f35f5603 JH |
1665 | } |
1666 | ||
beb5af43 | 1667 | enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit) |
252a7c02 LT |
1668 | { |
1669 | if (commit->object.flags & SHOWN) | |
1670 | return commit_ignore; | |
4d6acb70 | 1671 | if (revs->unpacked && has_sha1_pack(commit->object.sha1)) |
252a7c02 | 1672 | return commit_ignore; |
3131b713 LT |
1673 | if (revs->show_all) |
1674 | return commit_show; | |
252a7c02 LT |
1675 | if (commit->object.flags & UNINTERESTING) |
1676 | return commit_ignore; | |
1677 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
1678 | return commit_ignore; | |
1679 | if (revs->no_merges && commit->parents && commit->parents->next) | |
1680 | return commit_ignore; | |
b8e8db28 LT |
1681 | if (revs->merges_only && !(commit->parents && commit->parents->next)) |
1682 | return commit_ignore; | |
252a7c02 LT |
1683 | if (!commit_match(commit, revs)) |
1684 | return commit_ignore; | |
53b2c823 | 1685 | if (revs->prune && revs->dense) { |
252a7c02 | 1686 | /* Commit without changes? */ |
7dc0fe3b | 1687 | if (commit->object.flags & TREESAME) { |
252a7c02 | 1688 | /* drop merges unless we want parenthood */ |
f35f5603 | 1689 | if (!want_ancestry(revs)) |
252a7c02 LT |
1690 | return commit_ignore; |
1691 | /* non-merge - always ignore it */ | |
1692 | if (!commit->parents || !commit->parents->next) | |
1693 | return commit_ignore; | |
1694 | } | |
252a7c02 LT |
1695 | } |
1696 | return commit_show; | |
1697 | } | |
1698 | ||
beb5af43 AS |
1699 | enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit) |
1700 | { | |
1701 | enum commit_action action = get_commit_action(revs, commit); | |
1702 | ||
1703 | if (action == commit_show && | |
1704 | !revs->show_all && | |
1705 | revs->prune && revs->dense && want_ancestry(revs)) { | |
1706 | if (rewrite_parents(revs, commit) < 0) | |
1707 | return commit_error; | |
1708 | } | |
1709 | return action; | |
1710 | } | |
1711 | ||
d5db6c9e | 1712 | static struct commit *get_revision_1(struct rev_info *revs) |
a4a88b2b | 1713 | { |
d5db6c9e | 1714 | if (!revs->commits) |
a4a88b2b | 1715 | return NULL; |
a4a88b2b | 1716 | |
765ac8ec | 1717 | do { |
cb115748 LT |
1718 | struct commit_list *entry = revs->commits; |
1719 | struct commit *commit = entry->item; | |
ea5ed3ab | 1720 | |
cb115748 LT |
1721 | revs->commits = entry->next; |
1722 | free(entry); | |
2a0925be | 1723 | |
8860fd42 JS |
1724 | if (revs->reflog_info) |
1725 | fake_reflog_parent(revs->reflog_info, commit); | |
1726 | ||
2a0925be LT |
1727 | /* |
1728 | * If we haven't done the list limiting, we need to look at | |
be7db6e5 LT |
1729 | * the parents here. We also need to do the date-based limiting |
1730 | * that we'd otherwise have done in limit_list(). | |
2a0925be | 1731 | */ |
be7db6e5 | 1732 | if (!revs->limited) { |
744f4985 | 1733 | if (revs->max_age != -1 && |
86ab4906 JH |
1734 | (commit->date < revs->max_age)) |
1735 | continue; | |
fce87ae5 | 1736 | if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) |
ed62089c JH |
1737 | die("Failed to traverse parents of commit %s", |
1738 | sha1_to_hex(commit->object.sha1)); | |
be7db6e5 | 1739 | } |
744f4985 | 1740 | |
252a7c02 LT |
1741 | switch (simplify_commit(revs, commit)) { |
1742 | case commit_ignore: | |
8ecae9b0 | 1743 | continue; |
252a7c02 | 1744 | case commit_error: |
ed62089c JH |
1745 | die("Failed to simplify parents of commit %s", |
1746 | sha1_to_hex(commit->object.sha1)); | |
252a7c02 LT |
1747 | default: |
1748 | return commit; | |
384e99a4 | 1749 | } |
765ac8ec LT |
1750 | } while (revs->commits); |
1751 | return NULL; | |
1752 | } | |
d5db6c9e | 1753 | |
86ab4906 JH |
1754 | static void gc_boundary(struct object_array *array) |
1755 | { | |
1756 | unsigned nr = array->nr; | |
1757 | unsigned alloc = array->alloc; | |
1758 | struct object_array_entry *objects = array->objects; | |
1759 | ||
1760 | if (alloc <= nr) { | |
1761 | unsigned i, j; | |
1762 | for (i = j = 0; i < nr; i++) { | |
1763 | if (objects[i].item->flags & SHOWN) | |
1764 | continue; | |
1765 | if (i != j) | |
1766 | objects[j] = objects[i]; | |
1767 | j++; | |
1768 | } | |
892ae6bf | 1769 | for (i = j; i < nr; i++) |
86ab4906 JH |
1770 | objects[i].item = NULL; |
1771 | array->nr = j; | |
1772 | } | |
1773 | } | |
1774 | ||
4603ec0f AS |
1775 | static void create_boundary_commit_list(struct rev_info *revs) |
1776 | { | |
1777 | unsigned i; | |
1778 | struct commit *c; | |
1779 | struct object_array *array = &revs->boundary_commits; | |
1780 | struct object_array_entry *objects = array->objects; | |
1781 | ||
1782 | /* | |
1783 | * If revs->commits is non-NULL at this point, an error occurred in | |
1784 | * get_revision_1(). Ignore the error and continue printing the | |
1785 | * boundary commits anyway. (This is what the code has always | |
1786 | * done.) | |
1787 | */ | |
1788 | if (revs->commits) { | |
1789 | free_commit_list(revs->commits); | |
1790 | revs->commits = NULL; | |
1791 | } | |
1792 | ||
1793 | /* | |
1794 | * Put all of the actual boundary commits from revs->boundary_commits | |
1795 | * into revs->commits | |
1796 | */ | |
1797 | for (i = 0; i < array->nr; i++) { | |
1798 | c = (struct commit *)(objects[i].item); | |
1799 | if (!c) | |
1800 | continue; | |
1801 | if (!(c->object.flags & CHILD_SHOWN)) | |
1802 | continue; | |
1803 | if (c->object.flags & (SHOWN | BOUNDARY)) | |
1804 | continue; | |
1805 | c->object.flags |= BOUNDARY; | |
1806 | commit_list_insert(c, &revs->commits); | |
1807 | } | |
1808 | ||
1809 | /* | |
1810 | * If revs->topo_order is set, sort the boundary commits | |
1811 | * in topological order | |
1812 | */ | |
1813 | sort_in_topological_order(&revs->commits, revs->lifo); | |
1814 | } | |
1815 | ||
7fefda5c | 1816 | static struct commit *get_revision_internal(struct rev_info *revs) |
d5db6c9e JH |
1817 | { |
1818 | struct commit *c = NULL; | |
86ab4906 JH |
1819 | struct commit_list *l; |
1820 | ||
1821 | if (revs->boundary == 2) { | |
4603ec0f AS |
1822 | /* |
1823 | * All of the normal commits have already been returned, | |
1824 | * and we are now returning boundary commits. | |
1825 | * create_boundary_commit_list() has populated | |
1826 | * revs->commits with the remaining commits to return. | |
1827 | */ | |
1828 | c = pop_commit(&revs->commits); | |
1829 | if (c) | |
1830 | c->object.flags |= SHOWN; | |
9c5e66e9 JS |
1831 | return c; |
1832 | } | |
1833 | ||
86ab4906 JH |
1834 | /* |
1835 | * Now pick up what they want to give us | |
1836 | */ | |
8839ac94 JH |
1837 | c = get_revision_1(revs); |
1838 | if (c) { | |
1839 | while (0 < revs->skip_count) { | |
1840 | revs->skip_count--; | |
1841 | c = get_revision_1(revs); | |
1842 | if (!c) | |
1843 | break; | |
1844 | } | |
86ab4906 JH |
1845 | } |
1846 | ||
1847 | /* | |
1848 | * Check the max_count. | |
1849 | */ | |
d5db6c9e JH |
1850 | switch (revs->max_count) { |
1851 | case -1: | |
1852 | break; | |
1853 | case 0: | |
86ab4906 JH |
1854 | c = NULL; |
1855 | break; | |
d5db6c9e JH |
1856 | default: |
1857 | revs->max_count--; | |
1858 | } | |
86ab4906 | 1859 | |
c33d8593 JH |
1860 | if (c) |
1861 | c->object.flags |= SHOWN; | |
1862 | ||
1863 | if (!revs->boundary) { | |
d5db6c9e | 1864 | return c; |
c33d8593 | 1865 | } |
86ab4906 JH |
1866 | |
1867 | if (!c) { | |
1868 | /* | |
1869 | * get_revision_1() runs out the commits, and | |
1870 | * we are done computing the boundaries. | |
1871 | * switch to boundary commits output mode. | |
1872 | */ | |
1873 | revs->boundary = 2; | |
4603ec0f AS |
1874 | |
1875 | /* | |
1876 | * Update revs->commits to contain the list of | |
1877 | * boundary commits. | |
1878 | */ | |
1879 | create_boundary_commit_list(revs); | |
1880 | ||
3c68d67b | 1881 | return get_revision_internal(revs); |
86ab4906 JH |
1882 | } |
1883 | ||
1884 | /* | |
1885 | * boundary commits are the commits that are parents of the | |
1886 | * ones we got from get_revision_1() but they themselves are | |
1887 | * not returned from get_revision_1(). Before returning | |
1888 | * 'c', we need to mark its parents that they could be boundaries. | |
1889 | */ | |
1890 | ||
1891 | for (l = c->parents; l; l = l->next) { | |
1892 | struct object *p; | |
1893 | p = &(l->item->object); | |
c33d8593 | 1894 | if (p->flags & (CHILD_SHOWN | SHOWN)) |
86ab4906 JH |
1895 | continue; |
1896 | p->flags |= CHILD_SHOWN; | |
1897 | gc_boundary(&revs->boundary_commits); | |
1898 | add_object_array(p, NULL, &revs->boundary_commits); | |
1899 | } | |
1900 | ||
1901 | return c; | |
d5db6c9e | 1902 | } |
7fefda5c AS |
1903 | |
1904 | struct commit *get_revision(struct rev_info *revs) | |
1905 | { | |
498bcd31 TR |
1906 | struct commit *c; |
1907 | struct commit_list *reversed; | |
1908 | ||
1909 | if (revs->reverse) { | |
1910 | reversed = NULL; | |
1911 | while ((c = get_revision_internal(revs))) { | |
1912 | commit_list_insert(c, &reversed); | |
1913 | } | |
1914 | revs->commits = reversed; | |
1915 | revs->reverse = 0; | |
1916 | revs->reverse_output_stage = 1; | |
1917 | } | |
1918 | ||
1919 | if (revs->reverse_output_stage) | |
1920 | return pop_commit(&revs->commits); | |
1921 | ||
1922 | c = get_revision_internal(revs); | |
7fefda5c AS |
1923 | if (c && revs->graph) |
1924 | graph_update(revs->graph, c); | |
1925 | return c; | |
1926 | } |