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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" |
894a9d33 | 15 | #include "string-list.h" |
12da1d1f | 16 | #include "line-log.h" |
d72fbe81 | 17 | #include "mailmap.h" |
53d00b39 | 18 | #include "commit-slab.h" |
ae563542 | 19 | |
cdcefbc9 LT |
20 | volatile show_early_output_fn_t show_early_output; |
21 | ||
cf2ab916 | 22 | char *path_name(const struct name_path *path, const char *name) |
ae563542 | 23 | { |
cf2ab916 | 24 | const struct name_path *p; |
ae563542 LT |
25 | char *n, *m; |
26 | int nlen = strlen(name); | |
27 | int len = nlen + 1; | |
28 | ||
29 | for (p = path; p; p = p->up) { | |
30 | if (p->elem_len) | |
31 | len += p->elem_len + 1; | |
32 | } | |
33 | n = xmalloc(len); | |
34 | m = n + len - (nlen + 1); | |
35 | strcpy(m, name); | |
36 | for (p = path; p; p = p->up) { | |
37 | if (p->elem_len) { | |
38 | m -= p->elem_len + 1; | |
39 | memcpy(m, p->elem, p->elem_len); | |
40 | m[p->elem_len] = '/'; | |
41 | } | |
42 | } | |
43 | return n; | |
44 | } | |
45 | ||
beba25ab JH |
46 | static int show_path_component_truncated(FILE *out, const char *name, int len) |
47 | { | |
48 | int cnt; | |
49 | for (cnt = 0; cnt < len; cnt++) { | |
50 | int ch = name[cnt]; | |
51 | if (!ch || ch == '\n') | |
52 | return -1; | |
53 | fputc(ch, out); | |
54 | } | |
55 | return len; | |
56 | } | |
57 | ||
58 | static int show_path_truncated(FILE *out, const struct name_path *path) | |
59 | { | |
60 | int emitted, ours; | |
61 | ||
62 | if (!path) | |
63 | return 0; | |
64 | emitted = show_path_truncated(out, path->up); | |
65 | if (emitted < 0) | |
66 | return emitted; | |
67 | if (emitted) | |
68 | fputc('/', out); | |
69 | ours = show_path_component_truncated(out, path->elem, path->elem_len); | |
70 | if (ours < 0) | |
71 | return ours; | |
72 | return ours || emitted; | |
73 | } | |
74 | ||
ff5f5f26 MH |
75 | void show_object_with_name(FILE *out, struct object *obj, |
76 | const struct name_path *path, const char *component) | |
91f17516 | 77 | { |
beba25ab JH |
78 | struct name_path leaf; |
79 | leaf.up = (struct name_path *)path; | |
80 | leaf.elem = component; | |
81 | leaf.elem_len = strlen(component); | |
91f17516 | 82 | |
beba25ab JH |
83 | fprintf(out, "%s ", sha1_to_hex(obj->sha1)); |
84 | show_path_truncated(out, &leaf); | |
85 | fputc('\n', out); | |
91f17516 JH |
86 | } |
87 | ||
1f1e895f LT |
88 | void add_object(struct object *obj, |
89 | struct object_array *p, | |
90 | struct name_path *path, | |
91 | const char *name) | |
ae563542 | 92 | { |
31faeb20 MH |
93 | char *pn = path_name(path, name); |
94 | add_object_array(obj, pn, p); | |
95 | free(pn); | |
ae563542 LT |
96 | } |
97 | ||
98 | static void mark_blob_uninteresting(struct blob *blob) | |
99 | { | |
c1ee9013 MK |
100 | if (!blob) |
101 | return; | |
ae563542 LT |
102 | if (blob->object.flags & UNINTERESTING) |
103 | return; | |
104 | blob->object.flags |= UNINTERESTING; | |
105 | } | |
106 | ||
107 | void mark_tree_uninteresting(struct tree *tree) | |
108 | { | |
f75e53ed | 109 | struct tree_desc desc; |
4c068a98 | 110 | struct name_entry entry; |
ae563542 | 111 | struct object *obj = &tree->object; |
ae563542 | 112 | |
c1ee9013 MK |
113 | if (!tree) |
114 | return; | |
ae563542 LT |
115 | if (obj->flags & UNINTERESTING) |
116 | return; | |
117 | obj->flags |= UNINTERESTING; | |
118 | if (!has_sha1_file(obj->sha1)) | |
119 | return; | |
120 | if (parse_tree(tree) < 0) | |
121 | die("bad tree %s", sha1_to_hex(obj->sha1)); | |
f75e53ed | 122 | |
6fda5e51 | 123 | init_tree_desc(&desc, tree->buffer, tree->size); |
4c068a98 | 124 | while (tree_entry(&desc, &entry)) { |
4d1012c3 LT |
125 | switch (object_type(entry.mode)) { |
126 | case OBJ_TREE: | |
4c068a98 | 127 | mark_tree_uninteresting(lookup_tree(entry.sha1)); |
4d1012c3 LT |
128 | break; |
129 | case OBJ_BLOB: | |
4c068a98 | 130 | mark_blob_uninteresting(lookup_blob(entry.sha1)); |
4d1012c3 LT |
131 | break; |
132 | default: | |
133 | /* Subproject commit - not in this repository */ | |
134 | break; | |
135 | } | |
ae563542 | 136 | } |
f75e53ed LT |
137 | |
138 | /* | |
139 | * We don't care about the tree any more | |
140 | * after it has been marked uninteresting. | |
141 | */ | |
6e454b9a | 142 | free_tree_buffer(tree); |
ae563542 LT |
143 | } |
144 | ||
145 | void mark_parents_uninteresting(struct commit *commit) | |
146 | { | |
941ba8db NTND |
147 | struct commit_list *parents = NULL, *l; |
148 | ||
149 | for (l = commit->parents; l; l = l->next) | |
150 | commit_list_insert(l->item, &parents); | |
ae563542 LT |
151 | |
152 | while (parents) { | |
153 | struct commit *commit = parents->item; | |
941ba8db NTND |
154 | l = parents; |
155 | parents = parents->next; | |
156 | free(l); | |
157 | ||
158 | while (commit) { | |
159 | /* | |
160 | * A missing commit is ok iff its parent is marked | |
161 | * uninteresting. | |
162 | * | |
163 | * We just mark such a thing parsed, so that when | |
164 | * it is popped next time around, we won't be trying | |
165 | * to parse it and get an error. | |
166 | */ | |
167 | if (!has_sha1_file(commit->object.sha1)) | |
168 | commit->object.parsed = 1; | |
169 | ||
170 | if (commit->object.flags & UNINTERESTING) | |
171 | break; | |
172 | ||
d2c4af73 | 173 | commit->object.flags |= UNINTERESTING; |
ae563542 | 174 | |
d2c4af73 MU |
175 | /* |
176 | * Normally we haven't parsed the parent | |
177 | * yet, so we won't have a parent of a parent | |
178 | * here. However, it may turn out that we've | |
179 | * reached this commit some other way (where it | |
180 | * wasn't uninteresting), in which case we need | |
181 | * to mark its parents recursively too.. | |
182 | */ | |
941ba8db NTND |
183 | if (!commit->parents) |
184 | break; | |
ae563542 | 185 | |
941ba8db NTND |
186 | for (l = commit->parents->next; l; l = l->next) |
187 | commit_list_insert(l->item, &parents); | |
188 | commit = commit->parents->item; | |
189 | } | |
ae563542 LT |
190 | } |
191 | } | |
192 | ||
ff5f5f26 MH |
193 | static void add_pending_object_with_mode(struct rev_info *revs, |
194 | struct object *obj, | |
195 | const char *name, unsigned mode) | |
ae563542 | 196 | { |
cc243c3c JH |
197 | if (!obj) |
198 | return; | |
aa27e461 | 199 | if (revs->no_walk && (obj->flags & UNINTERESTING)) |
f222abde | 200 | revs->no_walk = 0; |
105e4733 JH |
201 | if (revs->reflog_info && obj->type == OBJ_COMMIT) { |
202 | struct strbuf buf = STRBUF_INIT; | |
cf99a761 | 203 | int len = interpret_branch_name(name, 0, &buf); |
105e4733 JH |
204 | int st; |
205 | ||
206 | if (0 < len && name[len] && buf.len) | |
207 | strbuf_addstr(&buf, name + len); | |
208 | st = add_reflog_for_walk(revs->reflog_info, | |
209 | (struct commit *)obj, | |
210 | buf.buf[0] ? buf.buf: name); | |
211 | strbuf_release(&buf); | |
212 | if (st) | |
213 | return; | |
214 | } | |
bb6c2fba | 215 | add_object_array_with_mode(obj, name, &revs->pending, mode); |
ae563542 LT |
216 | } |
217 | ||
ff5f5f26 MH |
218 | void add_pending_object(struct rev_info *revs, |
219 | struct object *obj, const char *name) | |
2d93b9fa JH |
220 | { |
221 | add_pending_object_with_mode(revs, obj, name, S_IFINVALID); | |
222 | } | |
223 | ||
3384a2df JH |
224 | void add_head_to_pending(struct rev_info *revs) |
225 | { | |
226 | unsigned char sha1[20]; | |
227 | struct object *obj; | |
228 | if (get_sha1("HEAD", sha1)) | |
229 | return; | |
230 | obj = parse_object(sha1); | |
231 | if (!obj) | |
232 | return; | |
233 | add_pending_object(revs, obj, "HEAD"); | |
234 | } | |
235 | ||
ff5f5f26 MH |
236 | static struct object *get_reference(struct rev_info *revs, const char *name, |
237 | const unsigned char *sha1, | |
238 | unsigned int flags) | |
ae563542 LT |
239 | { |
240 | struct object *object; | |
241 | ||
242 | object = parse_object(sha1); | |
cc243c3c JH |
243 | if (!object) { |
244 | if (revs->ignore_missing) | |
245 | return object; | |
ae563542 | 246 | die("bad object %s", name); |
cc243c3c | 247 | } |
cd2bdc53 LT |
248 | object->flags |= flags; |
249 | return object; | |
250 | } | |
251 | ||
26c3177e RS |
252 | void add_pending_sha1(struct rev_info *revs, const char *name, |
253 | const unsigned char *sha1, unsigned int flags) | |
254 | { | |
255 | struct object *object = get_reference(revs, name, sha1, flags); | |
256 | add_pending_object(revs, object, name); | |
257 | } | |
258 | ||
ff5f5f26 MH |
259 | static struct commit *handle_commit(struct rev_info *revs, |
260 | struct object *object, const char *name) | |
cd2bdc53 LT |
261 | { |
262 | unsigned long flags = object->flags; | |
ae563542 LT |
263 | |
264 | /* | |
265 | * Tag object? Look what it points to.. | |
266 | */ | |
1974632c | 267 | while (object->type == OBJ_TAG) { |
ae563542 | 268 | struct tag *tag = (struct tag *) object; |
cd2bdc53 | 269 | if (revs->tag_objects && !(flags & UNINTERESTING)) |
ae563542 | 270 | add_pending_object(revs, object, tag->tag); |
9684afd9 MK |
271 | if (!tag->tagged) |
272 | die("bad tag"); | |
ae563542 | 273 | object = parse_object(tag->tagged->sha1); |
aeeae1b7 JH |
274 | if (!object) { |
275 | if (flags & UNINTERESTING) | |
276 | return NULL; | |
ae563542 | 277 | die("bad object %s", sha1_to_hex(tag->tagged->sha1)); |
aeeae1b7 | 278 | } |
ae563542 LT |
279 | } |
280 | ||
281 | /* | |
282 | * Commit object? Just return it, we'll do all the complex | |
283 | * reachability crud. | |
284 | */ | |
1974632c | 285 | if (object->type == OBJ_COMMIT) { |
ae563542 | 286 | struct commit *commit = (struct commit *)object; |
ae563542 LT |
287 | if (parse_commit(commit) < 0) |
288 | die("unable to parse commit %s", name); | |
d9a83684 | 289 | if (flags & UNINTERESTING) { |
4262c1b0 | 290 | commit->object.flags |= UNINTERESTING; |
ae563542 | 291 | mark_parents_uninteresting(commit); |
d9a83684 LT |
292 | revs->limited = 1; |
293 | } | |
0f3a290b LT |
294 | if (revs->show_source && !commit->util) |
295 | commit->util = (void *) name; | |
ae563542 LT |
296 | return commit; |
297 | } | |
298 | ||
299 | /* | |
3ea3c215 | 300 | * Tree object? Either mark it uninteresting, or add it |
ae563542 LT |
301 | * to the list of objects to look at later.. |
302 | */ | |
1974632c | 303 | if (object->type == OBJ_TREE) { |
ae563542 LT |
304 | struct tree *tree = (struct tree *)object; |
305 | if (!revs->tree_objects) | |
306 | return NULL; | |
307 | if (flags & UNINTERESTING) { | |
308 | mark_tree_uninteresting(tree); | |
309 | return NULL; | |
310 | } | |
311 | add_pending_object(revs, object, ""); | |
312 | return NULL; | |
313 | } | |
314 | ||
315 | /* | |
316 | * Blob object? You know the drill by now.. | |
317 | */ | |
1974632c | 318 | if (object->type == OBJ_BLOB) { |
ae563542 LT |
319 | struct blob *blob = (struct blob *)object; |
320 | if (!revs->blob_objects) | |
321 | return NULL; | |
322 | if (flags & UNINTERESTING) { | |
323 | mark_blob_uninteresting(blob); | |
324 | return NULL; | |
325 | } | |
326 | add_pending_object(revs, object, ""); | |
327 | return NULL; | |
328 | } | |
329 | die("%s is unknown object", name); | |
330 | } | |
331 | ||
a4a88b2b LT |
332 | static int everybody_uninteresting(struct commit_list *orig) |
333 | { | |
334 | struct commit_list *list = orig; | |
335 | while (list) { | |
336 | struct commit *commit = list->item; | |
337 | list = list->next; | |
338 | if (commit->object.flags & UNINTERESTING) | |
339 | continue; | |
340 | return 0; | |
341 | } | |
342 | return 1; | |
343 | } | |
344 | ||
4d826608 KB |
345 | /* |
346 | * A definition of "relevant" commit that we can use to simplify limited graphs | |
347 | * by eliminating side branches. | |
348 | * | |
349 | * A "relevant" commit is one that is !UNINTERESTING (ie we are including it | |
350 | * in our list), or that is a specified BOTTOM commit. Then after computing | |
351 | * a limited list, during processing we can generally ignore boundary merges | |
352 | * coming from outside the graph, (ie from irrelevant parents), and treat | |
353 | * those merges as if they were single-parent. TREESAME is defined to consider | |
354 | * only relevant parents, if any. If we are TREESAME to our on-graph parents, | |
355 | * we don't care if we were !TREESAME to non-graph parents. | |
356 | * | |
357 | * Treating bottom commits as relevant ensures that a limited graph's | |
358 | * connection to the actual bottom commit is not viewed as a side branch, but | |
359 | * treated as part of the graph. For example: | |
360 | * | |
361 | * ....Z...A---X---o---o---B | |
362 | * . / | |
363 | * W---Y | |
364 | * | |
365 | * When computing "A..B", the A-X connection is at least as important as | |
366 | * Y-X, despite A being flagged UNINTERESTING. | |
367 | * | |
368 | * And when computing --ancestry-path "A..B", the A-X connection is more | |
369 | * important than Y-X, despite both A and Y being flagged UNINTERESTING. | |
370 | */ | |
371 | static inline int relevant_commit(struct commit *commit) | |
372 | { | |
373 | return (commit->object.flags & (UNINTERESTING | BOTTOM)) != UNINTERESTING; | |
374 | } | |
375 | ||
376 | /* | |
377 | * Return a single relevant commit from a parent list. If we are a TREESAME | |
378 | * commit, and this selects one of our parents, then we can safely simplify to | |
379 | * that parent. | |
380 | */ | |
381 | static struct commit *one_relevant_parent(const struct rev_info *revs, | |
382 | struct commit_list *orig) | |
383 | { | |
384 | struct commit_list *list = orig; | |
385 | struct commit *relevant = NULL; | |
386 | ||
387 | if (!orig) | |
388 | return NULL; | |
389 | ||
390 | /* | |
391 | * For 1-parent commits, or if first-parent-only, then return that | |
392 | * first parent (even if not "relevant" by the above definition). | |
393 | * TREESAME will have been set purely on that parent. | |
394 | */ | |
395 | if (revs->first_parent_only || !orig->next) | |
396 | return orig->item; | |
397 | ||
398 | /* | |
399 | * For multi-parent commits, identify a sole relevant parent, if any. | |
400 | * If we have only one relevant parent, then TREESAME will be set purely | |
401 | * with regard to that parent, and we can simplify accordingly. | |
402 | * | |
403 | * If we have more than one relevant parent, or no relevant parents | |
404 | * (and multiple irrelevant ones), then we can't select a parent here | |
405 | * and return NULL. | |
406 | */ | |
407 | while (list) { | |
408 | struct commit *commit = list->item; | |
409 | list = list->next; | |
410 | if (relevant_commit(commit)) { | |
411 | if (relevant) | |
412 | return NULL; | |
413 | relevant = commit; | |
414 | } | |
415 | } | |
416 | return relevant; | |
417 | } | |
418 | ||
0a4ba7f8 JH |
419 | /* |
420 | * The goal is to get REV_TREE_NEW as the result only if the | |
ceff8e7a LT |
421 | * diff consists of all '+' (and no other changes), REV_TREE_OLD |
422 | * if the whole diff is removal of old data, and otherwise | |
423 | * REV_TREE_DIFFERENT (of course if the trees are the same we | |
424 | * want REV_TREE_SAME). | |
425 | * That means that once we get to REV_TREE_DIFFERENT, we do not | |
426 | * have to look any further. | |
0a4ba7f8 | 427 | */ |
8efdc326 | 428 | static int tree_difference = REV_TREE_SAME; |
a4a88b2b LT |
429 | |
430 | static void file_add_remove(struct diff_options *options, | |
431 | int addremove, unsigned mode, | |
432 | const unsigned char *sha1, | |
e5450100 | 433 | int sha1_valid, |
e3d42c47 | 434 | const char *fullpath, unsigned dirty_submodule) |
a4a88b2b | 435 | { |
ceff8e7a | 436 | int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD; |
a4a88b2b | 437 | |
ceff8e7a | 438 | tree_difference |= diff; |
dd47aa31 | 439 | if (tree_difference == REV_TREE_DIFFERENT) |
8f67f8ae | 440 | DIFF_OPT_SET(options, HAS_CHANGES); |
a4a88b2b LT |
441 | } |
442 | ||
443 | static void file_change(struct diff_options *options, | |
444 | unsigned old_mode, unsigned new_mode, | |
445 | const unsigned char *old_sha1, | |
446 | const unsigned char *new_sha1, | |
e5450100 | 447 | int old_sha1_valid, int new_sha1_valid, |
e3d42c47 JL |
448 | const char *fullpath, |
449 | unsigned old_dirty_submodule, unsigned new_dirty_submodule) | |
a4a88b2b | 450 | { |
8efdc326 | 451 | tree_difference = REV_TREE_DIFFERENT; |
8f67f8ae | 452 | DIFF_OPT_SET(options, HAS_CHANGES); |
a4a88b2b LT |
453 | } |
454 | ||
ff5f5f26 MH |
455 | static int rev_compare_tree(struct rev_info *revs, |
456 | struct commit *parent, struct commit *commit) | |
a4a88b2b | 457 | { |
3a5e8608 LT |
458 | struct tree *t1 = parent->tree; |
459 | struct tree *t2 = commit->tree; | |
460 | ||
a4a88b2b | 461 | if (!t1) |
8efdc326 | 462 | return REV_TREE_NEW; |
ceff8e7a LT |
463 | if (!t2) |
464 | return REV_TREE_OLD; | |
78892e32 LT |
465 | |
466 | if (revs->simplify_by_decoration) { | |
467 | /* | |
468 | * If we are simplifying by decoration, then the commit | |
469 | * is worth showing if it has a tag pointing at it. | |
470 | */ | |
471 | if (lookup_decoration(&name_decoration, &commit->object)) | |
472 | return REV_TREE_DIFFERENT; | |
473 | /* | |
474 | * A commit that is not pointed by a tag is uninteresting | |
475 | * if we are not limited by path. This means that you will | |
476 | * see the usual "commits that touch the paths" plus any | |
477 | * tagged commit by specifying both --simplify-by-decoration | |
478 | * and pathspec. | |
479 | */ | |
afe069d1 | 480 | if (!revs->prune_data.nr) |
78892e32 LT |
481 | return REV_TREE_SAME; |
482 | } | |
ceff8e7a | 483 | |
8efdc326 | 484 | tree_difference = REV_TREE_SAME; |
8f67f8ae | 485 | DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES); |
c4e05b1a | 486 | if (diff_tree_sha1(t1->object.sha1, t2->object.sha1, "", |
cd2bdc53 | 487 | &revs->pruning) < 0) |
8efdc326 | 488 | return REV_TREE_DIFFERENT; |
a4a88b2b LT |
489 | return tree_difference; |
490 | } | |
491 | ||
3a5e8608 | 492 | static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit) |
a4a88b2b LT |
493 | { |
494 | int retval; | |
495 | void *tree; | |
6fda5e51 | 496 | unsigned long size; |
a4a88b2b | 497 | struct tree_desc empty, real; |
3a5e8608 | 498 | struct tree *t1 = commit->tree; |
a4a88b2b LT |
499 | |
500 | if (!t1) | |
501 | return 0; | |
502 | ||
6fda5e51 | 503 | tree = read_object_with_reference(t1->object.sha1, tree_type, &size, NULL); |
a4a88b2b LT |
504 | if (!tree) |
505 | return 0; | |
6fda5e51 LT |
506 | init_tree_desc(&real, tree, size); |
507 | init_tree_desc(&empty, "", 0); | |
a4a88b2b | 508 | |
0a4ba7f8 | 509 | tree_difference = REV_TREE_SAME; |
8f67f8ae | 510 | DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES); |
cd2bdc53 | 511 | retval = diff_tree(&empty, &real, "", &revs->pruning); |
a4a88b2b LT |
512 | free(tree); |
513 | ||
0a4ba7f8 | 514 | return retval >= 0 && (tree_difference == REV_TREE_SAME); |
a4a88b2b LT |
515 | } |
516 | ||
d0af663e KB |
517 | struct treesame_state { |
518 | unsigned int nparents; | |
519 | unsigned char treesame[FLEX_ARRAY]; | |
520 | }; | |
521 | ||
522 | static struct treesame_state *initialise_treesame(struct rev_info *revs, struct commit *commit) | |
523 | { | |
524 | unsigned n = commit_list_count(commit->parents); | |
525 | struct treesame_state *st = xcalloc(1, sizeof(*st) + n); | |
526 | st->nparents = n; | |
527 | add_decoration(&revs->treesame, &commit->object, st); | |
528 | return st; | |
529 | } | |
530 | ||
531 | /* | |
532 | * Must be called immediately after removing the nth_parent from a commit's | |
533 | * parent list, if we are maintaining the per-parent treesame[] decoration. | |
534 | * This does not recalculate the master TREESAME flag - update_treesame() | |
535 | * should be called to update it after a sequence of treesame[] modifications | |
536 | * that may have affected it. | |
537 | */ | |
538 | static int compact_treesame(struct rev_info *revs, struct commit *commit, unsigned nth_parent) | |
539 | { | |
540 | struct treesame_state *st; | |
541 | int old_same; | |
542 | ||
543 | if (!commit->parents) { | |
544 | /* | |
545 | * Have just removed the only parent from a non-merge. | |
546 | * Different handling, as we lack decoration. | |
547 | */ | |
548 | if (nth_parent != 0) | |
549 | die("compact_treesame %u", nth_parent); | |
550 | old_same = !!(commit->object.flags & TREESAME); | |
551 | if (rev_same_tree_as_empty(revs, commit)) | |
552 | commit->object.flags |= TREESAME; | |
553 | else | |
554 | commit->object.flags &= ~TREESAME; | |
555 | return old_same; | |
556 | } | |
557 | ||
558 | st = lookup_decoration(&revs->treesame, &commit->object); | |
559 | if (!st || nth_parent >= st->nparents) | |
560 | die("compact_treesame %u", nth_parent); | |
561 | ||
562 | old_same = st->treesame[nth_parent]; | |
563 | memmove(st->treesame + nth_parent, | |
564 | st->treesame + nth_parent + 1, | |
565 | st->nparents - nth_parent - 1); | |
566 | ||
567 | /* | |
568 | * If we've just become a non-merge commit, update TREESAME | |
569 | * immediately, and remove the no-longer-needed decoration. | |
570 | * If still a merge, defer update until update_treesame(). | |
571 | */ | |
572 | if (--st->nparents == 1) { | |
573 | if (commit->parents->next) | |
574 | die("compact_treesame parents mismatch"); | |
575 | if (st->treesame[0] && revs->dense) | |
576 | commit->object.flags |= TREESAME; | |
577 | else | |
578 | commit->object.flags &= ~TREESAME; | |
579 | free(add_decoration(&revs->treesame, &commit->object, NULL)); | |
580 | } | |
581 | ||
582 | return old_same; | |
583 | } | |
584 | ||
585 | static unsigned update_treesame(struct rev_info *revs, struct commit *commit) | |
586 | { | |
587 | if (commit->parents && commit->parents->next) { | |
588 | unsigned n; | |
589 | struct treesame_state *st; | |
4d826608 KB |
590 | struct commit_list *p; |
591 | unsigned relevant_parents; | |
592 | unsigned relevant_change, irrelevant_change; | |
d0af663e KB |
593 | |
594 | st = lookup_decoration(&revs->treesame, &commit->object); | |
595 | if (!st) | |
596 | die("update_treesame %s", sha1_to_hex(commit->object.sha1)); | |
4d826608 KB |
597 | relevant_parents = 0; |
598 | relevant_change = irrelevant_change = 0; | |
599 | for (p = commit->parents, n = 0; p; n++, p = p->next) { | |
600 | if (relevant_commit(p->item)) { | |
601 | relevant_change |= !st->treesame[n]; | |
602 | relevant_parents++; | |
603 | } else | |
604 | irrelevant_change |= !st->treesame[n]; | |
d0af663e | 605 | } |
4d826608 KB |
606 | if (relevant_parents ? relevant_change : irrelevant_change) |
607 | commit->object.flags &= ~TREESAME; | |
608 | else | |
609 | commit->object.flags |= TREESAME; | |
d0af663e KB |
610 | } |
611 | ||
612 | return commit->object.flags & TREESAME; | |
613 | } | |
614 | ||
4d826608 KB |
615 | static inline int limiting_can_increase_treesame(const struct rev_info *revs) |
616 | { | |
617 | /* | |
618 | * TREESAME is irrelevant unless prune && dense; | |
619 | * if simplify_history is set, we can't have a mixture of TREESAME and | |
620 | * !TREESAME INTERESTING parents (and we don't have treesame[] | |
621 | * decoration anyway); | |
622 | * if first_parent_only is set, then the TREESAME flag is locked | |
623 | * against the first parent (and again we lack treesame[] decoration). | |
624 | */ | |
625 | return revs->prune && revs->dense && | |
626 | !revs->simplify_history && | |
627 | !revs->first_parent_only; | |
628 | } | |
629 | ||
a4a88b2b LT |
630 | static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit) |
631 | { | |
632 | struct commit_list **pp, *parent; | |
d0af663e | 633 | struct treesame_state *ts = NULL; |
4d826608 KB |
634 | int relevant_change = 0, irrelevant_change = 0; |
635 | int relevant_parents, nth_parent; | |
a4a88b2b | 636 | |
53b2c823 LT |
637 | /* |
638 | * If we don't do pruning, everything is interesting | |
639 | */ | |
7dc0fe3b | 640 | if (!revs->prune) |
53b2c823 | 641 | return; |
53b2c823 | 642 | |
a4a88b2b LT |
643 | if (!commit->tree) |
644 | return; | |
645 | ||
646 | if (!commit->parents) { | |
3a5e8608 | 647 | if (rev_same_tree_as_empty(revs, commit)) |
7dc0fe3b | 648 | commit->object.flags |= TREESAME; |
a4a88b2b LT |
649 | return; |
650 | } | |
651 | ||
53b2c823 LT |
652 | /* |
653 | * Normal non-merge commit? If we don't want to make the | |
654 | * history dense, we consider it always to be a change.. | |
655 | */ | |
7dc0fe3b | 656 | if (!revs->dense && !commit->parents->next) |
53b2c823 | 657 | return; |
53b2c823 | 658 | |
4d826608 | 659 | for (pp = &commit->parents, nth_parent = 0, relevant_parents = 0; |
d0af663e KB |
660 | (parent = *pp) != NULL; |
661 | pp = &parent->next, nth_parent++) { | |
a4a88b2b | 662 | struct commit *p = parent->item; |
4d826608 KB |
663 | if (relevant_commit(p)) |
664 | relevant_parents++; | |
a4a88b2b | 665 | |
d0af663e KB |
666 | if (nth_parent == 1) { |
667 | /* | |
668 | * This our second loop iteration - so we now know | |
669 | * we're dealing with a merge. | |
670 | * | |
671 | * Do not compare with later parents when we care only about | |
672 | * the first parent chain, in order to avoid derailing the | |
673 | * traversal to follow a side branch that brought everything | |
674 | * in the path we are limited to by the pathspec. | |
675 | */ | |
676 | if (revs->first_parent_only) | |
677 | break; | |
678 | /* | |
679 | * If this will remain a potentially-simplifiable | |
680 | * merge, remember per-parent treesame if needed. | |
681 | * Initialise the array with the comparison from our | |
682 | * first iteration. | |
683 | */ | |
684 | if (revs->treesame.name && | |
685 | !revs->simplify_history && | |
686 | !(commit->object.flags & UNINTERESTING)) { | |
687 | ts = initialise_treesame(revs, commit); | |
4d826608 | 688 | if (!(irrelevant_change || relevant_change)) |
d0af663e KB |
689 | ts->treesame[0] = 1; |
690 | } | |
691 | } | |
cc0e6c5a AR |
692 | if (parse_commit(p) < 0) |
693 | die("cannot simplify commit %s (because of %s)", | |
694 | sha1_to_hex(commit->object.sha1), | |
695 | sha1_to_hex(p->object.sha1)); | |
3a5e8608 | 696 | switch (rev_compare_tree(revs, p, commit)) { |
8efdc326 | 697 | case REV_TREE_SAME: |
141efdba | 698 | if (!revs->simplify_history || !relevant_commit(p)) { |
f3219fbb JH |
699 | /* Even if a merge with an uninteresting |
700 | * side branch brought the entire change | |
701 | * we are interested in, we do not want | |
702 | * to lose the other branches of this | |
703 | * merge, so we just keep going. | |
704 | */ | |
d0af663e KB |
705 | if (ts) |
706 | ts->treesame[nth_parent] = 1; | |
f3219fbb JH |
707 | continue; |
708 | } | |
a4a88b2b LT |
709 | parent->next = NULL; |
710 | commit->parents = parent; | |
7dc0fe3b | 711 | commit->object.flags |= TREESAME; |
a4a88b2b LT |
712 | return; |
713 | ||
8efdc326 FK |
714 | case REV_TREE_NEW: |
715 | if (revs->remove_empty_trees && | |
3a5e8608 | 716 | rev_same_tree_as_empty(revs, p)) { |
c348f31a JH |
717 | /* We are adding all the specified |
718 | * paths from this parent, so the | |
719 | * history beyond this parent is not | |
720 | * interesting. Remove its parents | |
721 | * (they are grandparents for us). | |
722 | * IOW, we pretend this parent is a | |
723 | * "root" commit. | |
a41e109c | 724 | */ |
cc0e6c5a AR |
725 | if (parse_commit(p) < 0) |
726 | die("cannot simplify commit %s (invalid %s)", | |
727 | sha1_to_hex(commit->object.sha1), | |
728 | sha1_to_hex(p->object.sha1)); | |
c348f31a | 729 | p->parents = NULL; |
a4a88b2b LT |
730 | } |
731 | /* fallthrough */ | |
ceff8e7a | 732 | case REV_TREE_OLD: |
8efdc326 | 733 | case REV_TREE_DIFFERENT: |
4d826608 KB |
734 | if (relevant_commit(p)) |
735 | relevant_change = 1; | |
736 | else | |
737 | irrelevant_change = 1; | |
a4a88b2b LT |
738 | continue; |
739 | } | |
740 | die("bad tree compare for commit %s", sha1_to_hex(commit->object.sha1)); | |
741 | } | |
4d826608 KB |
742 | |
743 | /* | |
744 | * TREESAME is straightforward for single-parent commits. For merge | |
745 | * commits, it is most useful to define it so that "irrelevant" | |
746 | * parents cannot make us !TREESAME - if we have any relevant | |
747 | * parents, then we only consider TREESAMEness with respect to them, | |
748 | * allowing irrelevant merges from uninteresting branches to be | |
749 | * simplified away. Only if we have only irrelevant parents do we | |
750 | * base TREESAME on them. Note that this logic is replicated in | |
751 | * update_treesame, which should be kept in sync. | |
752 | */ | |
753 | if (relevant_parents ? !relevant_change : !irrelevant_change) | |
754 | commit->object.flags |= TREESAME; | |
a4a88b2b LT |
755 | } |
756 | ||
47e44ed1 | 757 | static void commit_list_insert_by_date_cached(struct commit *p, struct commit_list **head, |
fce87ae5 AG |
758 | struct commit_list *cached_base, struct commit_list **cache) |
759 | { | |
760 | struct commit_list *new_entry; | |
761 | ||
762 | if (cached_base && p->date < cached_base->item->date) | |
47e44ed1 | 763 | new_entry = commit_list_insert_by_date(p, &cached_base->next); |
fce87ae5 | 764 | else |
47e44ed1 | 765 | new_entry = commit_list_insert_by_date(p, head); |
fce87ae5 AG |
766 | |
767 | if (cache && (!*cache || p->date < (*cache)->item->date)) | |
768 | *cache = new_entry; | |
769 | } | |
770 | ||
771 | static int add_parents_to_list(struct rev_info *revs, struct commit *commit, | |
772 | struct commit_list **list, struct commit_list **cache_ptr) | |
a4a88b2b LT |
773 | { |
774 | struct commit_list *parent = commit->parents; | |
577ed5c2 | 775 | unsigned left_flag; |
fce87ae5 | 776 | struct commit_list *cached_base = cache_ptr ? *cache_ptr : NULL; |
a4a88b2b | 777 | |
3381c790 | 778 | if (commit->object.flags & ADDED) |
cc0e6c5a | 779 | return 0; |
3381c790 LT |
780 | commit->object.flags |= ADDED; |
781 | ||
a4a88b2b LT |
782 | /* |
783 | * If the commit is uninteresting, don't try to | |
784 | * prune parents - we want the maximal uninteresting | |
785 | * set. | |
786 | * | |
787 | * Normally we haven't parsed the parent | |
788 | * yet, so we won't have a parent of a parent | |
789 | * here. However, it may turn out that we've | |
790 | * reached this commit some other way (where it | |
791 | * wasn't uninteresting), in which case we need | |
792 | * to mark its parents recursively too.. | |
793 | */ | |
794 | if (commit->object.flags & UNINTERESTING) { | |
795 | while (parent) { | |
796 | struct commit *p = parent->item; | |
797 | parent = parent->next; | |
aeeae1b7 JH |
798 | if (p) |
799 | p->object.flags |= UNINTERESTING; | |
cc0e6c5a | 800 | if (parse_commit(p) < 0) |
aeeae1b7 | 801 | continue; |
a4a88b2b LT |
802 | if (p->parents) |
803 | mark_parents_uninteresting(p); | |
804 | if (p->object.flags & SEEN) | |
805 | continue; | |
806 | p->object.flags |= SEEN; | |
47e44ed1 | 807 | commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); |
a4a88b2b | 808 | } |
cc0e6c5a | 809 | return 0; |
a4a88b2b LT |
810 | } |
811 | ||
812 | /* | |
813 | * Ok, the commit wasn't uninteresting. Try to | |
814 | * simplify the commit history and find the parent | |
815 | * that has no differences in the path set if one exists. | |
816 | */ | |
53b2c823 | 817 | try_to_simplify_commit(revs, commit); |
a4a88b2b | 818 | |
ba1d4505 | 819 | if (revs->no_walk) |
cc0e6c5a | 820 | return 0; |
ba1d4505 | 821 | |
577ed5c2 | 822 | left_flag = (commit->object.flags & SYMMETRIC_LEFT); |
0053e902 | 823 | |
d9c292e8 | 824 | for (parent = commit->parents; parent; parent = parent->next) { |
a4a88b2b LT |
825 | struct commit *p = parent->item; |
826 | ||
cc0e6c5a AR |
827 | if (parse_commit(p) < 0) |
828 | return -1; | |
0f3a290b LT |
829 | if (revs->show_source && !p->util) |
830 | p->util = commit->util; | |
577ed5c2 | 831 | p->object.flags |= left_flag; |
ad1012eb LH |
832 | if (!(p->object.flags & SEEN)) { |
833 | p->object.flags |= SEEN; | |
47e44ed1 | 834 | commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr); |
ad1012eb | 835 | } |
60d30b02 | 836 | if (revs->first_parent_only) |
d9c292e8 | 837 | break; |
a4a88b2b | 838 | } |
cc0e6c5a | 839 | return 0; |
a4a88b2b LT |
840 | } |
841 | ||
36d56de6 | 842 | static void cherry_pick_list(struct commit_list *list, struct rev_info *revs) |
d7a17cad JH |
843 | { |
844 | struct commit_list *p; | |
845 | int left_count = 0, right_count = 0; | |
846 | int left_first; | |
847 | struct patch_ids ids; | |
adbbb31e | 848 | unsigned cherry_flag; |
d7a17cad JH |
849 | |
850 | /* First count the commits on the left and on the right */ | |
851 | for (p = list; p; p = p->next) { | |
852 | struct commit *commit = p->item; | |
853 | unsigned flags = commit->object.flags; | |
854 | if (flags & BOUNDARY) | |
855 | ; | |
856 | else if (flags & SYMMETRIC_LEFT) | |
857 | left_count++; | |
858 | else | |
859 | right_count++; | |
860 | } | |
861 | ||
36c07975 TR |
862 | if (!left_count || !right_count) |
863 | return; | |
864 | ||
d7a17cad JH |
865 | left_first = left_count < right_count; |
866 | init_patch_ids(&ids); | |
66f13625 | 867 | ids.diffopts.pathspec = revs->diffopt.pathspec; |
d7a17cad JH |
868 | |
869 | /* Compute patch-ids for one side */ | |
870 | for (p = list; p; p = p->next) { | |
871 | struct commit *commit = p->item; | |
872 | unsigned flags = commit->object.flags; | |
873 | ||
874 | if (flags & BOUNDARY) | |
875 | continue; | |
876 | /* | |
877 | * If we have fewer left, left_first is set and we omit | |
878 | * commits on the right branch in this loop. If we have | |
879 | * fewer right, we skip the left ones. | |
880 | */ | |
881 | if (left_first != !!(flags & SYMMETRIC_LEFT)) | |
882 | continue; | |
883 | commit->util = add_commit_patch_id(commit, &ids); | |
884 | } | |
885 | ||
adbbb31e MG |
886 | /* either cherry_mark or cherry_pick are true */ |
887 | cherry_flag = revs->cherry_mark ? PATCHSAME : SHOWN; | |
888 | ||
d7a17cad JH |
889 | /* Check the other side */ |
890 | for (p = list; p; p = p->next) { | |
891 | struct commit *commit = p->item; | |
892 | struct patch_id *id; | |
893 | unsigned flags = commit->object.flags; | |
894 | ||
895 | if (flags & BOUNDARY) | |
896 | continue; | |
897 | /* | |
898 | * If we have fewer left, left_first is set and we omit | |
899 | * commits on the left branch in this loop. | |
900 | */ | |
901 | if (left_first == !!(flags & SYMMETRIC_LEFT)) | |
902 | continue; | |
903 | ||
904 | /* | |
905 | * Have we seen the same patch id? | |
906 | */ | |
907 | id = has_commit_patch_id(commit, &ids); | |
908 | if (!id) | |
909 | continue; | |
910 | id->seen = 1; | |
adbbb31e | 911 | commit->object.flags |= cherry_flag; |
d7a17cad JH |
912 | } |
913 | ||
914 | /* Now check the original side for seen ones */ | |
915 | for (p = list; p; p = p->next) { | |
916 | struct commit *commit = p->item; | |
917 | struct patch_id *ent; | |
918 | ||
919 | ent = commit->util; | |
920 | if (!ent) | |
921 | continue; | |
922 | if (ent->seen) | |
adbbb31e | 923 | commit->object.flags |= cherry_flag; |
d7a17cad JH |
924 | commit->util = NULL; |
925 | } | |
926 | ||
927 | free_patch_ids(&ids); | |
928 | } | |
929 | ||
7d004199 LT |
930 | /* How many extra uninteresting commits we want to see.. */ |
931 | #define SLOP 5 | |
932 | ||
933 | static int still_interesting(struct commit_list *src, unsigned long date, int slop) | |
3131b713 | 934 | { |
7d004199 LT |
935 | /* |
936 | * No source list at all? We're definitely done.. | |
937 | */ | |
938 | if (!src) | |
939 | return 0; | |
940 | ||
941 | /* | |
942 | * Does the destination list contain entries with a date | |
943 | * before the source list? Definitely _not_ done. | |
944 | */ | |
c19d1b4e | 945 | if (date <= src->item->date) |
7d004199 LT |
946 | return SLOP; |
947 | ||
948 | /* | |
949 | * Does the source list still have interesting commits in | |
950 | * it? Definitely not done.. | |
951 | */ | |
952 | if (!everybody_uninteresting(src)) | |
953 | return SLOP; | |
954 | ||
955 | /* Ok, we're closing in.. */ | |
956 | return slop-1; | |
3131b713 LT |
957 | } |
958 | ||
ebdc94f3 JH |
959 | /* |
960 | * "rev-list --ancestry-path A..B" computes commits that are ancestors | |
961 | * of B but not ancestors of A but further limits the result to those | |
962 | * that are descendants of A. This takes the list of bottom commits and | |
963 | * the result of "A..B" without --ancestry-path, and limits the latter | |
964 | * further to the ones that can reach one of the commits in "bottom". | |
965 | */ | |
966 | static void limit_to_ancestry(struct commit_list *bottom, struct commit_list *list) | |
967 | { | |
968 | struct commit_list *p; | |
969 | struct commit_list *rlist = NULL; | |
970 | int made_progress; | |
971 | ||
972 | /* | |
973 | * Reverse the list so that it will be likely that we would | |
974 | * process parents before children. | |
975 | */ | |
976 | for (p = list; p; p = p->next) | |
977 | commit_list_insert(p->item, &rlist); | |
978 | ||
979 | for (p = bottom; p; p = p->next) | |
980 | p->item->object.flags |= TMP_MARK; | |
981 | ||
982 | /* | |
983 | * Mark the ones that can reach bottom commits in "list", | |
984 | * in a bottom-up fashion. | |
985 | */ | |
986 | do { | |
987 | made_progress = 0; | |
988 | for (p = rlist; p; p = p->next) { | |
989 | struct commit *c = p->item; | |
990 | struct commit_list *parents; | |
991 | if (c->object.flags & (TMP_MARK | UNINTERESTING)) | |
992 | continue; | |
993 | for (parents = c->parents; | |
994 | parents; | |
995 | parents = parents->next) { | |
996 | if (!(parents->item->object.flags & TMP_MARK)) | |
997 | continue; | |
998 | c->object.flags |= TMP_MARK; | |
999 | made_progress = 1; | |
1000 | break; | |
1001 | } | |
1002 | } | |
1003 | } while (made_progress); | |
1004 | ||
1005 | /* | |
1006 | * NEEDSWORK: decide if we want to remove parents that are | |
1007 | * not marked with TMP_MARK from commit->parents for commits | |
1008 | * in the resulting list. We may not want to do that, though. | |
1009 | */ | |
1010 | ||
1011 | /* | |
1012 | * The ones that are not marked with TMP_MARK are uninteresting | |
1013 | */ | |
1014 | for (p = list; p; p = p->next) { | |
1015 | struct commit *c = p->item; | |
1016 | if (c->object.flags & TMP_MARK) | |
1017 | continue; | |
1018 | c->object.flags |= UNINTERESTING; | |
1019 | } | |
1020 | ||
1021 | /* We are done with the TMP_MARK */ | |
1022 | for (p = list; p; p = p->next) | |
1023 | p->item->object.flags &= ~TMP_MARK; | |
1024 | for (p = bottom; p; p = p->next) | |
1025 | p->item->object.flags &= ~TMP_MARK; | |
1026 | free_commit_list(rlist); | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * Before walking the history, keep the set of "negative" refs the | |
1031 | * caller has asked to exclude. | |
1032 | * | |
1033 | * This is used to compute "rev-list --ancestry-path A..B", as we need | |
1034 | * to filter the result of "A..B" further to the ones that can actually | |
1035 | * reach A. | |
1036 | */ | |
7f34a46f | 1037 | static struct commit_list *collect_bottom_commits(struct commit_list *list) |
ebdc94f3 | 1038 | { |
7f34a46f KB |
1039 | struct commit_list *elem, *bottom = NULL; |
1040 | for (elem = list; elem; elem = elem->next) | |
1041 | if (elem->item->object.flags & BOTTOM) | |
1042 | commit_list_insert(elem->item, &bottom); | |
ebdc94f3 JH |
1043 | return bottom; |
1044 | } | |
1045 | ||
60adf7d7 MG |
1046 | /* Assumes either left_only or right_only is set */ |
1047 | static void limit_left_right(struct commit_list *list, struct rev_info *revs) | |
1048 | { | |
1049 | struct commit_list *p; | |
1050 | ||
1051 | for (p = list; p; p = p->next) { | |
1052 | struct commit *commit = p->item; | |
1053 | ||
1054 | if (revs->right_only) { | |
1055 | if (commit->object.flags & SYMMETRIC_LEFT) | |
1056 | commit->object.flags |= SHOWN; | |
1057 | } else /* revs->left_only is set */ | |
1058 | if (!(commit->object.flags & SYMMETRIC_LEFT)) | |
1059 | commit->object.flags |= SHOWN; | |
1060 | } | |
1061 | } | |
1062 | ||
cc0e6c5a | 1063 | static int limit_list(struct rev_info *revs) |
a4a88b2b | 1064 | { |
7d004199 LT |
1065 | int slop = SLOP; |
1066 | unsigned long date = ~0ul; | |
a4a88b2b LT |
1067 | struct commit_list *list = revs->commits; |
1068 | struct commit_list *newlist = NULL; | |
1069 | struct commit_list **p = &newlist; | |
ebdc94f3 JH |
1070 | struct commit_list *bottom = NULL; |
1071 | ||
1072 | if (revs->ancestry_path) { | |
7f34a46f | 1073 | bottom = collect_bottom_commits(list); |
ebdc94f3 | 1074 | if (!bottom) |
97b03c35 | 1075 | die("--ancestry-path given but there are no bottom commits"); |
ebdc94f3 | 1076 | } |
a4a88b2b LT |
1077 | |
1078 | while (list) { | |
1079 | struct commit_list *entry = list; | |
1080 | struct commit *commit = list->item; | |
1081 | struct object *obj = &commit->object; | |
cdcefbc9 | 1082 | show_early_output_fn_t show; |
a4a88b2b LT |
1083 | |
1084 | list = list->next; | |
1085 | free(entry); | |
1086 | ||
1087 | if (revs->max_age != -1 && (commit->date < revs->max_age)) | |
1088 | obj->flags |= UNINTERESTING; | |
fce87ae5 | 1089 | if (add_parents_to_list(revs, commit, &list, NULL) < 0) |
cc0e6c5a | 1090 | return -1; |
a4a88b2b LT |
1091 | if (obj->flags & UNINTERESTING) { |
1092 | mark_parents_uninteresting(commit); | |
7d004199 LT |
1093 | if (revs->show_all) |
1094 | p = &commit_list_insert(commit, p)->next; | |
1095 | slop = still_interesting(list, date, slop); | |
1096 | if (slop) | |
3131b713 | 1097 | continue; |
7d004199 LT |
1098 | /* If showing all, add the whole pending list to the end */ |
1099 | if (revs->show_all) | |
1100 | *p = list; | |
1101 | break; | |
a4a88b2b LT |
1102 | } |
1103 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
1104 | continue; | |
7d004199 | 1105 | date = commit->date; |
a4a88b2b | 1106 | p = &commit_list_insert(commit, p)->next; |
cdcefbc9 LT |
1107 | |
1108 | show = show_early_output; | |
1109 | if (!show) | |
1110 | continue; | |
1111 | ||
1112 | show(revs, newlist); | |
1113 | show_early_output = NULL; | |
a4a88b2b | 1114 | } |
adbbb31e | 1115 | if (revs->cherry_pick || revs->cherry_mark) |
36d56de6 | 1116 | cherry_pick_list(newlist, revs); |
d7a17cad | 1117 | |
60adf7d7 MG |
1118 | if (revs->left_only || revs->right_only) |
1119 | limit_left_right(newlist, revs); | |
1120 | ||
ebdc94f3 JH |
1121 | if (bottom) { |
1122 | limit_to_ancestry(bottom, newlist); | |
1123 | free_commit_list(bottom); | |
1124 | } | |
1125 | ||
4d826608 KB |
1126 | /* |
1127 | * Check if any commits have become TREESAME by some of their parents | |
1128 | * becoming UNINTERESTING. | |
1129 | */ | |
1130 | if (limiting_can_increase_treesame(revs)) | |
1131 | for (list = newlist; list; list = list->next) { | |
1132 | struct commit *c = list->item; | |
1133 | if (c->object.flags & (UNINTERESTING | TREESAME)) | |
1134 | continue; | |
1135 | update_treesame(revs, c); | |
1136 | } | |
1137 | ||
a4a88b2b | 1138 | revs->commits = newlist; |
cc0e6c5a | 1139 | return 0; |
a4a88b2b LT |
1140 | } |
1141 | ||
df835d3a MH |
1142 | /* |
1143 | * Add an entry to refs->cmdline with the specified information. | |
1144 | * *name is copied. | |
1145 | */ | |
281eee47 JH |
1146 | static void add_rev_cmdline(struct rev_info *revs, |
1147 | struct object *item, | |
1148 | const char *name, | |
1149 | int whence, | |
1150 | unsigned flags) | |
1151 | { | |
1152 | struct rev_cmdline_info *info = &revs->cmdline; | |
1153 | int nr = info->nr; | |
1154 | ||
1155 | ALLOC_GROW(info->rev, nr + 1, info->alloc); | |
1156 | info->rev[nr].item = item; | |
df835d3a | 1157 | info->rev[nr].name = xstrdup(name); |
281eee47 JH |
1158 | info->rev[nr].whence = whence; |
1159 | info->rev[nr].flags = flags; | |
1160 | info->nr++; | |
1161 | } | |
1162 | ||
a765499a KB |
1163 | static void add_rev_cmdline_list(struct rev_info *revs, |
1164 | struct commit_list *commit_list, | |
1165 | int whence, | |
1166 | unsigned flags) | |
1167 | { | |
1168 | while (commit_list) { | |
1169 | struct object *object = &commit_list->item->object; | |
1170 | add_rev_cmdline(revs, object, sha1_to_hex(object->sha1), | |
1171 | whence, flags); | |
1172 | commit_list = commit_list->next; | |
1173 | } | |
1174 | } | |
1175 | ||
63049292 JH |
1176 | struct all_refs_cb { |
1177 | int all_flags; | |
71b03b42 | 1178 | int warned_bad_reflog; |
63049292 JH |
1179 | struct rev_info *all_revs; |
1180 | const char *name_for_errormsg; | |
1181 | }; | |
ae563542 | 1182 | |
8da19775 | 1183 | static int handle_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data) |
ae563542 | 1184 | { |
63049292 JH |
1185 | struct all_refs_cb *cb = cb_data; |
1186 | struct object *object = get_reference(cb->all_revs, path, sha1, | |
1187 | cb->all_flags); | |
281eee47 | 1188 | add_rev_cmdline(cb->all_revs, object, path, REV_CMD_REF, cb->all_flags); |
26c3177e | 1189 | add_pending_sha1(cb->all_revs, path, sha1, cb->all_flags); |
ae563542 LT |
1190 | return 0; |
1191 | } | |
1192 | ||
d08bae7e IL |
1193 | static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs, |
1194 | unsigned flags) | |
1195 | { | |
1196 | cb->all_revs = revs; | |
1197 | cb->all_flags = flags; | |
1198 | } | |
1199 | ||
9ef6aeb0 HV |
1200 | static void handle_refs(const char *submodule, struct rev_info *revs, unsigned flags, |
1201 | int (*for_each)(const char *, each_ref_fn, void *)) | |
ae563542 | 1202 | { |
63049292 | 1203 | struct all_refs_cb cb; |
d08bae7e | 1204 | init_all_refs_cb(&cb, revs, flags); |
9ef6aeb0 | 1205 | for_each(submodule, handle_one_ref, &cb); |
63049292 JH |
1206 | } |
1207 | ||
71b03b42 | 1208 | static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data) |
63049292 JH |
1209 | { |
1210 | struct all_refs_cb *cb = cb_data; | |
71b03b42 SP |
1211 | if (!is_null_sha1(sha1)) { |
1212 | struct object *o = parse_object(sha1); | |
1213 | if (o) { | |
1214 | o->flags |= cb->all_flags; | |
281eee47 | 1215 | /* ??? CMDLINEFLAGS ??? */ |
71b03b42 SP |
1216 | add_pending_object(cb->all_revs, o, ""); |
1217 | } | |
1218 | else if (!cb->warned_bad_reflog) { | |
46efd2d9 | 1219 | warning("reflog of '%s' references pruned commits", |
71b03b42 SP |
1220 | cb->name_for_errormsg); |
1221 | cb->warned_bad_reflog = 1; | |
1222 | } | |
63049292 | 1223 | } |
71b03b42 SP |
1224 | } |
1225 | ||
883d60fa JS |
1226 | static int handle_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1, |
1227 | const char *email, unsigned long timestamp, int tz, | |
1228 | const char *message, void *cb_data) | |
71b03b42 SP |
1229 | { |
1230 | handle_one_reflog_commit(osha1, cb_data); | |
1231 | handle_one_reflog_commit(nsha1, cb_data); | |
63049292 JH |
1232 | return 0; |
1233 | } | |
1234 | ||
1235 | static int handle_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data) | |
1236 | { | |
1237 | struct all_refs_cb *cb = cb_data; | |
71b03b42 | 1238 | cb->warned_bad_reflog = 0; |
63049292 JH |
1239 | cb->name_for_errormsg = path; |
1240 | for_each_reflog_ent(path, handle_one_reflog_ent, cb_data); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | static void handle_reflog(struct rev_info *revs, unsigned flags) | |
1245 | { | |
1246 | struct all_refs_cb cb; | |
1247 | cb.all_revs = revs; | |
1248 | cb.all_flags = flags; | |
25b51e2c | 1249 | for_each_reflog(handle_one_reflog, &cb); |
ae563542 LT |
1250 | } |
1251 | ||
281eee47 | 1252 | static int add_parents_only(struct rev_info *revs, const char *arg_, int flags) |
ea4a19e1 JH |
1253 | { |
1254 | unsigned char sha1[20]; | |
1255 | struct object *it; | |
1256 | struct commit *commit; | |
1257 | struct commit_list *parents; | |
281eee47 | 1258 | const char *arg = arg_; |
ea4a19e1 JH |
1259 | |
1260 | if (*arg == '^') { | |
7f34a46f | 1261 | flags ^= UNINTERESTING | BOTTOM; |
ea4a19e1 JH |
1262 | arg++; |
1263 | } | |
cd74e473 | 1264 | if (get_sha1_committish(arg, sha1)) |
ea4a19e1 JH |
1265 | return 0; |
1266 | while (1) { | |
1267 | it = get_reference(revs, arg, sha1, 0); | |
cc243c3c JH |
1268 | if (!it && revs->ignore_missing) |
1269 | return 0; | |
1974632c | 1270 | if (it->type != OBJ_TAG) |
ea4a19e1 | 1271 | break; |
9684afd9 MK |
1272 | if (!((struct tag*)it)->tagged) |
1273 | return 0; | |
e702496e | 1274 | hashcpy(sha1, ((struct tag*)it)->tagged->sha1); |
ea4a19e1 | 1275 | } |
1974632c | 1276 | if (it->type != OBJ_COMMIT) |
ea4a19e1 JH |
1277 | return 0; |
1278 | commit = (struct commit *)it; | |
1279 | for (parents = commit->parents; parents; parents = parents->next) { | |
1280 | it = &parents->item->object; | |
1281 | it->flags |= flags; | |
281eee47 | 1282 | add_rev_cmdline(revs, it, arg_, REV_CMD_PARENTS_ONLY, flags); |
ea4a19e1 JH |
1283 | add_pending_object(revs, it, arg); |
1284 | } | |
1285 | return 1; | |
1286 | } | |
1287 | ||
db6296a5 | 1288 | void init_revisions(struct rev_info *revs, const char *prefix) |
8efdc326 FK |
1289 | { |
1290 | memset(revs, 0, sizeof(*revs)); | |
8e8f9987 | 1291 | |
6b9c58f4 | 1292 | revs->abbrev = DEFAULT_ABBREV; |
8e8f9987 | 1293 | revs->ignore_merges = 1; |
9202434c | 1294 | revs->simplify_history = 1; |
8f67f8ae | 1295 | DIFF_OPT_SET(&revs->pruning, RECURSIVE); |
90b19941 | 1296 | DIFF_OPT_SET(&revs->pruning, QUICK); |
cd2bdc53 LT |
1297 | revs->pruning.add_remove = file_add_remove; |
1298 | revs->pruning.change = file_change; | |
08f704f2 | 1299 | revs->sort_order = REV_SORT_IN_GRAPH_ORDER; |
8efdc326 | 1300 | revs->dense = 1; |
db6296a5 | 1301 | revs->prefix = prefix; |
8efdc326 FK |
1302 | revs->max_age = -1; |
1303 | revs->min_age = -1; | |
d5db6c9e | 1304 | revs->skip_count = -1; |
8efdc326 | 1305 | revs->max_count = -1; |
ad5aeede | 1306 | revs->max_parents = -1; |
8efdc326 | 1307 | |
cd2bdc53 LT |
1308 | revs->commit_format = CMIT_FMT_DEFAULT; |
1309 | ||
918d4e1c JH |
1310 | init_grep_defaults(); |
1311 | grep_init(&revs->grep_filter, prefix); | |
0843acfd | 1312 | revs->grep_filter.status_only = 1; |
0843acfd JK |
1313 | revs->grep_filter.regflags = REG_NEWLINE; |
1314 | ||
cd2bdc53 | 1315 | diff_setup(&revs->diffopt); |
c0cb4a06 | 1316 | if (prefix && !revs->diffopt.prefix) { |
cd676a51 JH |
1317 | revs->diffopt.prefix = prefix; |
1318 | revs->diffopt.prefix_length = strlen(prefix); | |
1319 | } | |
3a03cf6b JK |
1320 | |
1321 | revs->notes_opt.use_default_notes = -1; | |
8efdc326 FK |
1322 | } |
1323 | ||
0d2c9d67 RS |
1324 | static void add_pending_commit_list(struct rev_info *revs, |
1325 | struct commit_list *commit_list, | |
1326 | unsigned int flags) | |
1327 | { | |
1328 | while (commit_list) { | |
1329 | struct object *object = &commit_list->item->object; | |
1330 | object->flags |= flags; | |
1331 | add_pending_object(revs, object, sha1_to_hex(object->sha1)); | |
1332 | commit_list = commit_list->next; | |
1333 | } | |
1334 | } | |
1335 | ||
ae3e5e1e JH |
1336 | static void prepare_show_merge(struct rev_info *revs) |
1337 | { | |
1338 | struct commit_list *bases; | |
1339 | struct commit *head, *other; | |
1340 | unsigned char sha1[20]; | |
1341 | const char **prune = NULL; | |
1342 | int i, prune_num = 1; /* counting terminating NULL */ | |
1343 | ||
baf18fc2 | 1344 | if (get_sha1("HEAD", sha1)) |
ae3e5e1e | 1345 | die("--merge without HEAD?"); |
baf18fc2 NTND |
1346 | head = lookup_commit_or_die(sha1, "HEAD"); |
1347 | if (get_sha1("MERGE_HEAD", sha1)) | |
ae3e5e1e | 1348 | die("--merge without MERGE_HEAD?"); |
baf18fc2 | 1349 | other = lookup_commit_or_die(sha1, "MERGE_HEAD"); |
ae3e5e1e JH |
1350 | add_pending_object(revs, &head->object, "HEAD"); |
1351 | add_pending_object(revs, &other->object, "MERGE_HEAD"); | |
1352 | bases = get_merge_bases(head, other, 1); | |
7f34a46f KB |
1353 | add_rev_cmdline_list(revs, bases, REV_CMD_MERGE_BASE, UNINTERESTING | BOTTOM); |
1354 | add_pending_commit_list(revs, bases, UNINTERESTING | BOTTOM); | |
e82447b1 JH |
1355 | free_commit_list(bases); |
1356 | head->object.flags |= SYMMETRIC_LEFT; | |
ae3e5e1e JH |
1357 | |
1358 | if (!active_nr) | |
1359 | read_cache(); | |
1360 | for (i = 0; i < active_nr; i++) { | |
9c5e6c80 | 1361 | const struct cache_entry *ce = active_cache[i]; |
ae3e5e1e JH |
1362 | if (!ce_stage(ce)) |
1363 | continue; | |
eb9cb55b | 1364 | if (ce_path_match(ce, &revs->prune_data)) { |
ae3e5e1e JH |
1365 | prune_num++; |
1366 | prune = xrealloc(prune, sizeof(*prune) * prune_num); | |
1367 | prune[prune_num-2] = ce->name; | |
1368 | prune[prune_num-1] = NULL; | |
1369 | } | |
1370 | while ((i+1 < active_nr) && | |
1371 | ce_same_name(ce, active_cache[i+1])) | |
1372 | i++; | |
1373 | } | |
afe069d1 | 1374 | free_pathspec(&revs->prune_data); |
9a087274 | 1375 | parse_pathspec(&revs->prune_data, PATHSPEC_ALL_MAGIC, 0, "", prune); |
e82447b1 | 1376 | revs->limited = 1; |
ae3e5e1e JH |
1377 | } |
1378 | ||
8e676e8b | 1379 | int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsigned revarg_opt) |
5d6f0935 | 1380 | { |
249c8f4a | 1381 | struct object_context oc; |
5d6f0935 JH |
1382 | char *dotdot; |
1383 | struct object *object; | |
1384 | unsigned char sha1[20]; | |
1385 | int local_flags; | |
281eee47 | 1386 | const char *arg = arg_; |
8e676e8b | 1387 | int cant_be_filename = revarg_opt & REVARG_CANNOT_BE_FILENAME; |
d5f6b1d7 | 1388 | unsigned get_sha1_flags = 0; |
5d6f0935 | 1389 | |
7f34a46f KB |
1390 | flags = flags & UNINTERESTING ? flags | BOTTOM : flags & ~BOTTOM; |
1391 | ||
5d6f0935 JH |
1392 | dotdot = strstr(arg, ".."); |
1393 | if (dotdot) { | |
1394 | unsigned char from_sha1[20]; | |
1395 | const char *next = dotdot + 2; | |
1396 | const char *this = arg; | |
1397 | int symmetric = *next == '.'; | |
7f34a46f | 1398 | unsigned int flags_exclude = flags ^ (UNINTERESTING | BOTTOM); |
003c84f6 | 1399 | static const char head_by_default[] = "HEAD"; |
281eee47 | 1400 | unsigned int a_flags; |
5d6f0935 JH |
1401 | |
1402 | *dotdot = 0; | |
1403 | next += symmetric; | |
1404 | ||
1405 | if (!*next) | |
003c84f6 | 1406 | next = head_by_default; |
5d6f0935 | 1407 | if (dotdot == arg) |
003c84f6 JH |
1408 | this = head_by_default; |
1409 | if (this == head_by_default && next == head_by_default && | |
1410 | !symmetric) { | |
1411 | /* | |
1412 | * Just ".."? That is not a range but the | |
1413 | * pathspec for the parent directory. | |
1414 | */ | |
1415 | if (!cant_be_filename) { | |
1416 | *dotdot = '.'; | |
1417 | return -1; | |
1418 | } | |
1419 | } | |
cd74e473 JH |
1420 | if (!get_sha1_committish(this, from_sha1) && |
1421 | !get_sha1_committish(next, sha1)) { | |
5d6f0935 JH |
1422 | struct commit *a, *b; |
1423 | struct commit_list *exclude; | |
1424 | ||
1425 | a = lookup_commit_reference(from_sha1); | |
1426 | b = lookup_commit_reference(sha1); | |
1427 | if (!a || !b) { | |
cc243c3c JH |
1428 | if (revs->ignore_missing) |
1429 | return 0; | |
5d6f0935 JH |
1430 | die(symmetric ? |
1431 | "Invalid symmetric difference expression %s...%s" : | |
1432 | "Invalid revision range %s..%s", | |
1433 | arg, next); | |
1434 | } | |
1435 | ||
1436 | if (!cant_be_filename) { | |
1437 | *dotdot = '.'; | |
1438 | verify_non_filename(revs->prefix, arg); | |
1439 | } | |
1440 | ||
1441 | if (symmetric) { | |
1442 | exclude = get_merge_bases(a, b, 1); | |
a765499a KB |
1443 | add_rev_cmdline_list(revs, exclude, |
1444 | REV_CMD_MERGE_BASE, | |
1445 | flags_exclude); | |
5d6f0935 JH |
1446 | add_pending_commit_list(revs, exclude, |
1447 | flags_exclude); | |
1448 | free_commit_list(exclude); | |
281eee47 | 1449 | a_flags = flags | SYMMETRIC_LEFT; |
5d6f0935 | 1450 | } else |
281eee47 JH |
1451 | a_flags = flags_exclude; |
1452 | a->object.flags |= a_flags; | |
5d6f0935 | 1453 | b->object.flags |= flags; |
281eee47 JH |
1454 | add_rev_cmdline(revs, &a->object, this, |
1455 | REV_CMD_LEFT, a_flags); | |
1456 | add_rev_cmdline(revs, &b->object, next, | |
1457 | REV_CMD_RIGHT, flags); | |
5d6f0935 JH |
1458 | add_pending_object(revs, &a->object, this); |
1459 | add_pending_object(revs, &b->object, next); | |
1460 | return 0; | |
1461 | } | |
1462 | *dotdot = '.'; | |
1463 | } | |
1464 | dotdot = strstr(arg, "^@"); | |
1465 | if (dotdot && !dotdot[2]) { | |
1466 | *dotdot = 0; | |
1467 | if (add_parents_only(revs, arg, flags)) | |
1468 | return 0; | |
1469 | *dotdot = '^'; | |
1470 | } | |
62476c8e JH |
1471 | dotdot = strstr(arg, "^!"); |
1472 | if (dotdot && !dotdot[2]) { | |
1473 | *dotdot = 0; | |
7f34a46f | 1474 | if (!add_parents_only(revs, arg, flags ^ (UNINTERESTING | BOTTOM))) |
62476c8e JH |
1475 | *dotdot = '^'; |
1476 | } | |
1477 | ||
5d6f0935 JH |
1478 | local_flags = 0; |
1479 | if (*arg == '^') { | |
7f34a46f | 1480 | local_flags = UNINTERESTING | BOTTOM; |
5d6f0935 JH |
1481 | arg++; |
1482 | } | |
d5f6b1d7 JH |
1483 | |
1484 | if (revarg_opt & REVARG_COMMITTISH) | |
1485 | get_sha1_flags = GET_SHA1_COMMITTISH; | |
1486 | ||
1487 | if (get_sha1_with_context(arg, get_sha1_flags, sha1, &oc)) | |
cc243c3c | 1488 | return revs->ignore_missing ? 0 : -1; |
5d6f0935 JH |
1489 | if (!cant_be_filename) |
1490 | verify_non_filename(revs->prefix, arg); | |
1491 | object = get_reference(revs, arg, sha1, flags ^ local_flags); | |
281eee47 | 1492 | add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags); |
249c8f4a | 1493 | add_pending_object_with_mode(revs, object, arg, oc.mode); |
5d6f0935 JH |
1494 | return 0; |
1495 | } | |
1496 | ||
4da5af31 JH |
1497 | struct cmdline_pathspec { |
1498 | int alloc; | |
1499 | int nr; | |
1500 | const char **path; | |
1501 | }; | |
1fc561d1 | 1502 | |
4da5af31 JH |
1503 | static void append_prune_data(struct cmdline_pathspec *prune, const char **av) |
1504 | { | |
1505 | while (*av) { | |
1506 | ALLOC_GROW(prune->path, prune->nr+1, prune->alloc); | |
1507 | prune->path[prune->nr++] = *(av++); | |
1508 | } | |
1509 | } | |
60da8b15 | 1510 | |
4da5af31 JH |
1511 | static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, |
1512 | struct cmdline_pathspec *prune) | |
1513 | { | |
60da8b15 JH |
1514 | while (strbuf_getwholeline(sb, stdin, '\n') != EOF) { |
1515 | int len = sb->len; | |
1516 | if (len && sb->buf[len - 1] == '\n') | |
1517 | sb->buf[--len] = '\0'; | |
4da5af31 JH |
1518 | ALLOC_GROW(prune->path, prune->nr+1, prune->alloc); |
1519 | prune->path[prune->nr++] = xstrdup(sb->buf); | |
60da8b15 | 1520 | } |
60da8b15 JH |
1521 | } |
1522 | ||
4da5af31 JH |
1523 | static void read_revisions_from_stdin(struct rev_info *revs, |
1524 | struct cmdline_pathspec *prune) | |
1fc561d1 | 1525 | { |
63d564b3 | 1526 | struct strbuf sb; |
60da8b15 | 1527 | int seen_dashdash = 0; |
1fc561d1 | 1528 | |
63d564b3 JH |
1529 | strbuf_init(&sb, 1000); |
1530 | while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) { | |
1531 | int len = sb.len; | |
1532 | if (len && sb.buf[len - 1] == '\n') | |
1533 | sb.buf[--len] = '\0'; | |
1fc561d1 AB |
1534 | if (!len) |
1535 | break; | |
60da8b15 JH |
1536 | if (sb.buf[0] == '-') { |
1537 | if (len == 2 && sb.buf[1] == '-') { | |
1538 | seen_dashdash = 1; | |
1539 | break; | |
1540 | } | |
1fc561d1 | 1541 | die("options not supported in --stdin mode"); |
60da8b15 | 1542 | } |
31faeb20 | 1543 | if (handle_revision_arg(sb.buf, revs, 0, |
70d26c6e | 1544 | REVARG_CANNOT_BE_FILENAME)) |
63d564b3 | 1545 | die("bad revision '%s'", sb.buf); |
1fc561d1 | 1546 | } |
60da8b15 JH |
1547 | if (seen_dashdash) |
1548 | read_pathspec_from_stdin(revs, &sb, prune); | |
63d564b3 | 1549 | strbuf_release(&sb); |
1fc561d1 AB |
1550 | } |
1551 | ||
2d10c555 | 1552 | static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what) |
bd95fcd3 | 1553 | { |
0843acfd | 1554 | append_grep_pattern(&revs->grep_filter, ptn, "command line", 0, what); |
2d10c555 JH |
1555 | } |
1556 | ||
a4d7d2c6 | 1557 | static void add_header_grep(struct rev_info *revs, enum grep_header_field field, const char *pattern) |
2d10c555 | 1558 | { |
a4d7d2c6 | 1559 | append_header_grep_pattern(&revs->grep_filter, field, pattern); |
bd95fcd3 JH |
1560 | } |
1561 | ||
1562 | static void add_message_grep(struct rev_info *revs, const char *pattern) | |
1563 | { | |
2d10c555 | 1564 | add_grep(revs, pattern, GREP_PATTERN_BODY); |
bd95fcd3 JH |
1565 | } |
1566 | ||
6b61ec05 PH |
1567 | static int handle_revision_opt(struct rev_info *revs, int argc, const char **argv, |
1568 | int *unkc, const char **unkv) | |
02e54220 PH |
1569 | { |
1570 | const char *arg = argv[0]; | |
7d7b86f7 MM |
1571 | const char *optarg; |
1572 | int argcount; | |
02e54220 PH |
1573 | |
1574 | /* pseudo revision arguments */ | |
1575 | if (!strcmp(arg, "--all") || !strcmp(arg, "--branches") || | |
1576 | !strcmp(arg, "--tags") || !strcmp(arg, "--remotes") || | |
1577 | !strcmp(arg, "--reflog") || !strcmp(arg, "--not") || | |
ad3f9a71 | 1578 | !strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk") || |
0fc63ec4 JN |
1579 | !strcmp(arg, "--bisect") || !prefixcmp(arg, "--glob=") || |
1580 | !prefixcmp(arg, "--branches=") || !prefixcmp(arg, "--tags=") || | |
ca92e59e | 1581 | !prefixcmp(arg, "--remotes=") || !prefixcmp(arg, "--no-walk=")) |
02e54220 PH |
1582 | { |
1583 | unkv[(*unkc)++] = arg; | |
0fe8c138 | 1584 | return 1; |
02e54220 PH |
1585 | } |
1586 | ||
7d7b86f7 MM |
1587 | if ((argcount = parse_long_opt("max-count", argv, &optarg))) { |
1588 | revs->max_count = atoi(optarg); | |
5853caec | 1589 | revs->no_walk = 0; |
7d7b86f7 MM |
1590 | return argcount; |
1591 | } else if ((argcount = parse_long_opt("skip", argv, &optarg))) { | |
1592 | revs->skip_count = atoi(optarg); | |
1593 | return argcount; | |
02e54220 PH |
1594 | } else if ((*arg == '-') && isdigit(arg[1])) { |
1595 | /* accept -<digit>, like traditional "head" */ | |
1596 | revs->max_count = atoi(arg + 1); | |
5853caec | 1597 | revs->no_walk = 0; |
02e54220 PH |
1598 | } else if (!strcmp(arg, "-n")) { |
1599 | if (argc <= 1) | |
1600 | return error("-n requires an argument"); | |
1601 | revs->max_count = atoi(argv[1]); | |
5853caec | 1602 | revs->no_walk = 0; |
02e54220 PH |
1603 | return 2; |
1604 | } else if (!prefixcmp(arg, "-n")) { | |
1605 | revs->max_count = atoi(arg + 2); | |
5853caec | 1606 | revs->no_walk = 0; |
7d7b86f7 MM |
1607 | } else if ((argcount = parse_long_opt("max-age", argv, &optarg))) { |
1608 | revs->max_age = atoi(optarg); | |
1609 | return argcount; | |
1610 | } else if ((argcount = parse_long_opt("since", argv, &optarg))) { | |
1611 | revs->max_age = approxidate(optarg); | |
1612 | return argcount; | |
1613 | } else if ((argcount = parse_long_opt("after", argv, &optarg))) { | |
1614 | revs->max_age = approxidate(optarg); | |
1615 | return argcount; | |
1616 | } else if ((argcount = parse_long_opt("min-age", argv, &optarg))) { | |
1617 | revs->min_age = atoi(optarg); | |
1618 | return argcount; | |
1619 | } else if ((argcount = parse_long_opt("before", argv, &optarg))) { | |
1620 | revs->min_age = approxidate(optarg); | |
1621 | return argcount; | |
1622 | } else if ((argcount = parse_long_opt("until", argv, &optarg))) { | |
1623 | revs->min_age = approxidate(optarg); | |
1624 | return argcount; | |
02e54220 PH |
1625 | } else if (!strcmp(arg, "--first-parent")) { |
1626 | revs->first_parent_only = 1; | |
ebdc94f3 JH |
1627 | } else if (!strcmp(arg, "--ancestry-path")) { |
1628 | revs->ancestry_path = 1; | |
cb7529e1 | 1629 | revs->simplify_history = 0; |
ebdc94f3 | 1630 | revs->limited = 1; |
02e54220 PH |
1631 | } else if (!strcmp(arg, "-g") || !strcmp(arg, "--walk-reflogs")) { |
1632 | init_reflog_walk(&revs->reflog_info); | |
1633 | } else if (!strcmp(arg, "--default")) { | |
1634 | if (argc <= 1) | |
1635 | return error("bad --default argument"); | |
1636 | revs->def = argv[1]; | |
1637 | return 2; | |
1638 | } else if (!strcmp(arg, "--merge")) { | |
1639 | revs->show_merge = 1; | |
1640 | } else if (!strcmp(arg, "--topo-order")) { | |
08f704f2 | 1641 | revs->sort_order = REV_SORT_IN_GRAPH_ORDER; |
02e54220 | 1642 | revs->topo_order = 1; |
6546b593 JH |
1643 | } else if (!strcmp(arg, "--simplify-merges")) { |
1644 | revs->simplify_merges = 1; | |
a52f0071 | 1645 | revs->topo_order = 1; |
6546b593 JH |
1646 | revs->rewrite_parents = 1; |
1647 | revs->simplify_history = 0; | |
1648 | revs->limited = 1; | |
78892e32 LT |
1649 | } else if (!strcmp(arg, "--simplify-by-decoration")) { |
1650 | revs->simplify_merges = 1; | |
a52f0071 | 1651 | revs->topo_order = 1; |
78892e32 LT |
1652 | revs->rewrite_parents = 1; |
1653 | revs->simplify_history = 0; | |
1654 | revs->simplify_by_decoration = 1; | |
1655 | revs->limited = 1; | |
1656 | revs->prune = 1; | |
33e7018c | 1657 | load_ref_decorations(DECORATE_SHORT_REFS); |
02e54220 | 1658 | } else if (!strcmp(arg, "--date-order")) { |
08f704f2 | 1659 | revs->sort_order = REV_SORT_BY_COMMIT_DATE; |
02e54220 | 1660 | revs->topo_order = 1; |
81c6b38b JH |
1661 | } else if (!strcmp(arg, "--author-date-order")) { |
1662 | revs->sort_order = REV_SORT_BY_AUTHOR_DATE; | |
02e54220 PH |
1663 | revs->topo_order = 1; |
1664 | } else if (!prefixcmp(arg, "--early-output")) { | |
1665 | int count = 100; | |
1666 | switch (arg[14]) { | |
1667 | case '=': | |
1668 | count = atoi(arg+15); | |
1669 | /* Fallthrough */ | |
1670 | case 0: | |
1671 | revs->topo_order = 1; | |
1672 | revs->early_output = count; | |
1673 | } | |
1674 | } else if (!strcmp(arg, "--parents")) { | |
1675 | revs->rewrite_parents = 1; | |
1676 | revs->print_parents = 1; | |
1677 | } else if (!strcmp(arg, "--dense")) { | |
1678 | revs->dense = 1; | |
1679 | } else if (!strcmp(arg, "--sparse")) { | |
1680 | revs->dense = 0; | |
1681 | } else if (!strcmp(arg, "--show-all")) { | |
1682 | revs->show_all = 1; | |
1683 | } else if (!strcmp(arg, "--remove-empty")) { | |
1684 | revs->remove_empty_trees = 1; | |
b8e8db28 | 1685 | } else if (!strcmp(arg, "--merges")) { |
ad5aeede | 1686 | revs->min_parents = 2; |
02e54220 | 1687 | } else if (!strcmp(arg, "--no-merges")) { |
ad5aeede MG |
1688 | revs->max_parents = 1; |
1689 | } else if (!prefixcmp(arg, "--min-parents=")) { | |
1690 | revs->min_parents = atoi(arg+14); | |
1691 | } else if (!prefixcmp(arg, "--no-min-parents")) { | |
1692 | revs->min_parents = 0; | |
1693 | } else if (!prefixcmp(arg, "--max-parents=")) { | |
1694 | revs->max_parents = atoi(arg+14); | |
1695 | } else if (!prefixcmp(arg, "--no-max-parents")) { | |
1696 | revs->max_parents = -1; | |
02e54220 PH |
1697 | } else if (!strcmp(arg, "--boundary")) { |
1698 | revs->boundary = 1; | |
1699 | } else if (!strcmp(arg, "--left-right")) { | |
1700 | revs->left_right = 1; | |
60adf7d7 | 1701 | } else if (!strcmp(arg, "--left-only")) { |
24852d91 | 1702 | if (revs->right_only) |
94f605ec MG |
1703 | die("--left-only is incompatible with --right-only" |
1704 | " or --cherry"); | |
60adf7d7 MG |
1705 | revs->left_only = 1; |
1706 | } else if (!strcmp(arg, "--right-only")) { | |
24852d91 JH |
1707 | if (revs->left_only) |
1708 | die("--right-only is incompatible with --left-only"); | |
60adf7d7 | 1709 | revs->right_only = 1; |
94f605ec MG |
1710 | } else if (!strcmp(arg, "--cherry")) { |
1711 | if (revs->left_only) | |
1712 | die("--cherry is incompatible with --left-only"); | |
1713 | revs->cherry_mark = 1; | |
1714 | revs->right_only = 1; | |
ad5aeede | 1715 | revs->max_parents = 1; |
94f605ec | 1716 | revs->limited = 1; |
f69c5018 TR |
1717 | } else if (!strcmp(arg, "--count")) { |
1718 | revs->count = 1; | |
adbbb31e MG |
1719 | } else if (!strcmp(arg, "--cherry-mark")) { |
1720 | if (revs->cherry_pick) | |
1721 | die("--cherry-mark is incompatible with --cherry-pick"); | |
1722 | revs->cherry_mark = 1; | |
1723 | revs->limited = 1; /* needs limit_list() */ | |
02e54220 | 1724 | } else if (!strcmp(arg, "--cherry-pick")) { |
adbbb31e MG |
1725 | if (revs->cherry_mark) |
1726 | die("--cherry-pick is incompatible with --cherry-mark"); | |
02e54220 PH |
1727 | revs->cherry_pick = 1; |
1728 | revs->limited = 1; | |
1729 | } else if (!strcmp(arg, "--objects")) { | |
1730 | revs->tag_objects = 1; | |
1731 | revs->tree_objects = 1; | |
1732 | revs->blob_objects = 1; | |
1733 | } else if (!strcmp(arg, "--objects-edge")) { | |
1734 | revs->tag_objects = 1; | |
1735 | revs->tree_objects = 1; | |
1736 | revs->blob_objects = 1; | |
1737 | revs->edge_hint = 1; | |
5a48d240 JH |
1738 | } else if (!strcmp(arg, "--verify-objects")) { |
1739 | revs->tag_objects = 1; | |
1740 | revs->tree_objects = 1; | |
1741 | revs->blob_objects = 1; | |
1742 | revs->verify_objects = 1; | |
02e54220 PH |
1743 | } else if (!strcmp(arg, "--unpacked")) { |
1744 | revs->unpacked = 1; | |
03a9683d JH |
1745 | } else if (!prefixcmp(arg, "--unpacked=")) { |
1746 | die("--unpacked=<packfile> no longer supported."); | |
02e54220 PH |
1747 | } else if (!strcmp(arg, "-r")) { |
1748 | revs->diff = 1; | |
1749 | DIFF_OPT_SET(&revs->diffopt, RECURSIVE); | |
1750 | } else if (!strcmp(arg, "-t")) { | |
1751 | revs->diff = 1; | |
1752 | DIFF_OPT_SET(&revs->diffopt, RECURSIVE); | |
1753 | DIFF_OPT_SET(&revs->diffopt, TREE_IN_RECURSIVE); | |
1754 | } else if (!strcmp(arg, "-m")) { | |
1755 | revs->ignore_merges = 0; | |
1756 | } else if (!strcmp(arg, "-c")) { | |
1757 | revs->diff = 1; | |
1758 | revs->dense_combined_merges = 0; | |
1759 | revs->combine_merges = 1; | |
1760 | } else if (!strcmp(arg, "--cc")) { | |
1761 | revs->diff = 1; | |
1762 | revs->dense_combined_merges = 1; | |
1763 | revs->combine_merges = 1; | |
1764 | } else if (!strcmp(arg, "-v")) { | |
1765 | revs->verbose_header = 1; | |
1766 | } else if (!strcmp(arg, "--pretty")) { | |
1767 | revs->verbose_header = 1; | |
66b2ed09 | 1768 | revs->pretty_given = 1; |
02e54220 | 1769 | get_commit_format(arg+8, revs); |
3a4c1a5e | 1770 | } else if (!prefixcmp(arg, "--pretty=") || !prefixcmp(arg, "--format=")) { |
7d7b86f7 MM |
1771 | /* |
1772 | * Detached form ("--pretty X" as opposed to "--pretty=X") | |
1773 | * not allowed, since the argument is optional. | |
1774 | */ | |
02e54220 | 1775 | revs->verbose_header = 1; |
66b2ed09 | 1776 | revs->pretty_given = 1; |
02e54220 | 1777 | get_commit_format(arg+9, revs); |
7249e912 | 1778 | } else if (!strcmp(arg, "--show-notes") || !strcmp(arg, "--notes")) { |
66b2ed09 JH |
1779 | revs->show_notes = 1; |
1780 | revs->show_notes_given = 1; | |
3a03cf6b | 1781 | revs->notes_opt.use_default_notes = 1; |
0c37f1fc JH |
1782 | } else if (!strcmp(arg, "--show-signature")) { |
1783 | revs->show_signature = 1; | |
7249e912 JK |
1784 | } else if (!prefixcmp(arg, "--show-notes=") || |
1785 | !prefixcmp(arg, "--notes=")) { | |
894a9d33 TR |
1786 | struct strbuf buf = STRBUF_INIT; |
1787 | revs->show_notes = 1; | |
1788 | revs->show_notes_given = 1; | |
7249e912 JK |
1789 | if (!prefixcmp(arg, "--show-notes")) { |
1790 | if (revs->notes_opt.use_default_notes < 0) | |
1791 | revs->notes_opt.use_default_notes = 1; | |
1792 | strbuf_addstr(&buf, arg+13); | |
1793 | } | |
1794 | else | |
1795 | strbuf_addstr(&buf, arg+8); | |
c063f0a9 | 1796 | expand_notes_ref(&buf); |
304cc11c | 1797 | string_list_append(&revs->notes_opt.extra_notes_refs, |
1d2f80fa | 1798 | strbuf_detach(&buf, NULL)); |
66b2ed09 JH |
1799 | } else if (!strcmp(arg, "--no-notes")) { |
1800 | revs->show_notes = 0; | |
1801 | revs->show_notes_given = 1; | |
92e0d425 JK |
1802 | revs->notes_opt.use_default_notes = -1; |
1803 | /* we have been strdup'ing ourselves, so trick | |
1804 | * string_list into free()ing strings */ | |
1805 | revs->notes_opt.extra_notes_refs.strdup_strings = 1; | |
1806 | string_list_clear(&revs->notes_opt.extra_notes_refs, 0); | |
1807 | revs->notes_opt.extra_notes_refs.strdup_strings = 0; | |
894a9d33 TR |
1808 | } else if (!strcmp(arg, "--standard-notes")) { |
1809 | revs->show_notes_given = 1; | |
3a03cf6b | 1810 | revs->notes_opt.use_default_notes = 1; |
894a9d33 | 1811 | } else if (!strcmp(arg, "--no-standard-notes")) { |
3a03cf6b | 1812 | revs->notes_opt.use_default_notes = 0; |
de84accc NS |
1813 | } else if (!strcmp(arg, "--oneline")) { |
1814 | revs->verbose_header = 1; | |
1815 | get_commit_format("oneline", revs); | |
7dccadf3 | 1816 | revs->pretty_given = 1; |
de84accc | 1817 | revs->abbrev_commit = 1; |
02e54220 PH |
1818 | } else if (!strcmp(arg, "--graph")) { |
1819 | revs->topo_order = 1; | |
1820 | revs->rewrite_parents = 1; | |
1821 | revs->graph = graph_init(revs); | |
1822 | } else if (!strcmp(arg, "--root")) { | |
1823 | revs->show_root_diff = 1; | |
1824 | } else if (!strcmp(arg, "--no-commit-id")) { | |
1825 | revs->no_commit_id = 1; | |
1826 | } else if (!strcmp(arg, "--always")) { | |
1827 | revs->always_show_header = 1; | |
1828 | } else if (!strcmp(arg, "--no-abbrev")) { | |
1829 | revs->abbrev = 0; | |
1830 | } else if (!strcmp(arg, "--abbrev")) { | |
1831 | revs->abbrev = DEFAULT_ABBREV; | |
1832 | } else if (!prefixcmp(arg, "--abbrev=")) { | |
1833 | revs->abbrev = strtoul(arg + 9, NULL, 10); | |
1834 | if (revs->abbrev < MINIMUM_ABBREV) | |
1835 | revs->abbrev = MINIMUM_ABBREV; | |
1836 | else if (revs->abbrev > 40) | |
1837 | revs->abbrev = 40; | |
1838 | } else if (!strcmp(arg, "--abbrev-commit")) { | |
1839 | revs->abbrev_commit = 1; | |
0c47695a JS |
1840 | revs->abbrev_commit_given = 1; |
1841 | } else if (!strcmp(arg, "--no-abbrev-commit")) { | |
1842 | revs->abbrev_commit = 0; | |
02e54220 PH |
1843 | } else if (!strcmp(arg, "--full-diff")) { |
1844 | revs->diff = 1; | |
1845 | revs->full_diff = 1; | |
1846 | } else if (!strcmp(arg, "--full-history")) { | |
1847 | revs->simplify_history = 0; | |
1848 | } else if (!strcmp(arg, "--relative-date")) { | |
1849 | revs->date_mode = DATE_RELATIVE; | |
f4ea32f0 | 1850 | revs->date_mode_explicit = 1; |
7d7b86f7 MM |
1851 | } else if ((argcount = parse_long_opt("date", argv, &optarg))) { |
1852 | revs->date_mode = parse_date_format(optarg); | |
f4ea32f0 | 1853 | revs->date_mode_explicit = 1; |
7d7b86f7 | 1854 | return argcount; |
02e54220 PH |
1855 | } else if (!strcmp(arg, "--log-size")) { |
1856 | revs->show_log_size = 1; | |
1857 | } | |
1858 | /* | |
1859 | * Grepping the commit log | |
1860 | */ | |
7d7b86f7 MM |
1861 | else if ((argcount = parse_long_opt("author", argv, &optarg))) { |
1862 | add_header_grep(revs, GREP_HEADER_AUTHOR, optarg); | |
1863 | return argcount; | |
1864 | } else if ((argcount = parse_long_opt("committer", argv, &optarg))) { | |
1865 | add_header_grep(revs, GREP_HEADER_COMMITTER, optarg); | |
1866 | return argcount; | |
72fd13f7 NTND |
1867 | } else if ((argcount = parse_long_opt("grep-reflog", argv, &optarg))) { |
1868 | add_header_grep(revs, GREP_HEADER_REFLOG, optarg); | |
1869 | return argcount; | |
7d7b86f7 MM |
1870 | } else if ((argcount = parse_long_opt("grep", argv, &optarg))) { |
1871 | add_message_grep(revs, optarg); | |
1872 | return argcount; | |
17bf35a3 JH |
1873 | } else if (!strcmp(arg, "--grep-debug")) { |
1874 | revs->grep_filter.debug = 1; | |
727b6fc3 JH |
1875 | } else if (!strcmp(arg, "--basic-regexp")) { |
1876 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_BRE, &revs->grep_filter); | |
02e54220 | 1877 | } else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) { |
34a4ae55 | 1878 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, &revs->grep_filter); |
02e54220 | 1879 | } else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) { |
0843acfd | 1880 | revs->grep_filter.regflags |= REG_ICASE; |
accccde4 | 1881 | DIFF_OPT_SET(&revs->diffopt, PICKAXE_IGNORE_CASE); |
02e54220 | 1882 | } else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) { |
34a4ae55 | 1883 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_FIXED, &revs->grep_filter); |
727b6fc3 JH |
1884 | } else if (!strcmp(arg, "--perl-regexp")) { |
1885 | grep_set_pattern_type_option(GREP_PATTERN_TYPE_PCRE, &revs->grep_filter); | |
02e54220 | 1886 | } else if (!strcmp(arg, "--all-match")) { |
0843acfd | 1887 | revs->grep_filter.all_match = 1; |
7d7b86f7 MM |
1888 | } else if ((argcount = parse_long_opt("encoding", argv, &optarg))) { |
1889 | if (strcmp(optarg, "none")) | |
1890 | git_log_output_encoding = xstrdup(optarg); | |
02e54220 PH |
1891 | else |
1892 | git_log_output_encoding = ""; | |
7d7b86f7 | 1893 | return argcount; |
02e54220 PH |
1894 | } else if (!strcmp(arg, "--reverse")) { |
1895 | revs->reverse ^= 1; | |
1896 | } else if (!strcmp(arg, "--children")) { | |
1897 | revs->children.name = "children"; | |
1898 | revs->limited = 1; | |
cc243c3c JH |
1899 | } else if (!strcmp(arg, "--ignore-missing")) { |
1900 | revs->ignore_missing = 1; | |
02e54220 PH |
1901 | } else { |
1902 | int opts = diff_opt_parse(&revs->diffopt, argv, argc); | |
1903 | if (!opts) | |
1904 | unkv[(*unkc)++] = arg; | |
1905 | return opts; | |
1906 | } | |
1907 | ||
1908 | return 1; | |
1909 | } | |
1910 | ||
6b61ec05 PH |
1911 | void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx, |
1912 | const struct option *options, | |
1913 | const char * const usagestr[]) | |
1914 | { | |
1915 | int n = handle_revision_opt(revs, ctx->argc, ctx->argv, | |
1916 | &ctx->cpidx, ctx->out); | |
1917 | if (n <= 0) { | |
1918 | error("unknown option `%s'", ctx->argv[0]); | |
1919 | usage_with_options(usagestr, options); | |
1920 | } | |
1921 | ctx->argv += n; | |
1922 | ctx->argc -= n; | |
1923 | } | |
1924 | ||
9ef6aeb0 | 1925 | static int for_each_bad_bisect_ref(const char *submodule, each_ref_fn fn, void *cb_data) |
ad3f9a71 | 1926 | { |
9ef6aeb0 | 1927 | return for_each_ref_in_submodule(submodule, "refs/bisect/bad", fn, cb_data); |
ad3f9a71 LT |
1928 | } |
1929 | ||
9ef6aeb0 | 1930 | static int for_each_good_bisect_ref(const char *submodule, each_ref_fn fn, void *cb_data) |
ad3f9a71 | 1931 | { |
9ef6aeb0 | 1932 | return for_each_ref_in_submodule(submodule, "refs/bisect/good", fn, cb_data); |
ad3f9a71 LT |
1933 | } |
1934 | ||
f6aca0dc JN |
1935 | static int handle_revision_pseudo_opt(const char *submodule, |
1936 | struct rev_info *revs, | |
1937 | int argc, const char **argv, int *flags) | |
1938 | { | |
1939 | const char *arg = argv[0]; | |
1940 | const char *optarg; | |
1941 | int argcount; | |
1942 | ||
0fc63ec4 JN |
1943 | /* |
1944 | * NOTE! | |
1945 | * | |
1946 | * Commands like "git shortlog" will not accept the options below | |
1947 | * unless parse_revision_opt queues them (as opposed to erroring | |
1948 | * out). | |
1949 | * | |
1950 | * When implementing your new pseudo-option, remember to | |
1951 | * register it in the list at the top of handle_revision_opt. | |
1952 | */ | |
f6aca0dc JN |
1953 | if (!strcmp(arg, "--all")) { |
1954 | handle_refs(submodule, revs, *flags, for_each_ref_submodule); | |
1955 | handle_refs(submodule, revs, *flags, head_ref_submodule); | |
1956 | } else if (!strcmp(arg, "--branches")) { | |
1957 | handle_refs(submodule, revs, *flags, for_each_branch_ref_submodule); | |
1958 | } else if (!strcmp(arg, "--bisect")) { | |
1959 | handle_refs(submodule, revs, *flags, for_each_bad_bisect_ref); | |
7f34a46f | 1960 | handle_refs(submodule, revs, *flags ^ (UNINTERESTING | BOTTOM), for_each_good_bisect_ref); |
f6aca0dc JN |
1961 | revs->bisect = 1; |
1962 | } else if (!strcmp(arg, "--tags")) { | |
1963 | handle_refs(submodule, revs, *flags, for_each_tag_ref_submodule); | |
1964 | } else if (!strcmp(arg, "--remotes")) { | |
1965 | handle_refs(submodule, revs, *flags, for_each_remote_ref_submodule); | |
1966 | } else if ((argcount = parse_long_opt("glob", argv, &optarg))) { | |
1967 | struct all_refs_cb cb; | |
1968 | init_all_refs_cb(&cb, revs, *flags); | |
1969 | for_each_glob_ref(handle_one_ref, optarg, &cb); | |
1970 | return argcount; | |
1971 | } else if (!prefixcmp(arg, "--branches=")) { | |
1972 | struct all_refs_cb cb; | |
1973 | init_all_refs_cb(&cb, revs, *flags); | |
1974 | for_each_glob_ref_in(handle_one_ref, arg + 11, "refs/heads/", &cb); | |
1975 | } else if (!prefixcmp(arg, "--tags=")) { | |
1976 | struct all_refs_cb cb; | |
1977 | init_all_refs_cb(&cb, revs, *flags); | |
1978 | for_each_glob_ref_in(handle_one_ref, arg + 7, "refs/tags/", &cb); | |
1979 | } else if (!prefixcmp(arg, "--remotes=")) { | |
1980 | struct all_refs_cb cb; | |
1981 | init_all_refs_cb(&cb, revs, *flags); | |
1982 | for_each_glob_ref_in(handle_one_ref, arg + 10, "refs/remotes/", &cb); | |
1983 | } else if (!strcmp(arg, "--reflog")) { | |
1984 | handle_reflog(revs, *flags); | |
1985 | } else if (!strcmp(arg, "--not")) { | |
7f34a46f | 1986 | *flags ^= UNINTERESTING | BOTTOM; |
f6aca0dc | 1987 | } else if (!strcmp(arg, "--no-walk")) { |
ca92e59e MZ |
1988 | revs->no_walk = REVISION_WALK_NO_WALK_SORTED; |
1989 | } else if (!prefixcmp(arg, "--no-walk=")) { | |
1990 | /* | |
1991 | * Detached form ("--no-walk X" as opposed to "--no-walk=X") | |
1992 | * not allowed, since the argument is optional. | |
1993 | */ | |
1994 | if (!strcmp(arg + 10, "sorted")) | |
1995 | revs->no_walk = REVISION_WALK_NO_WALK_SORTED; | |
1996 | else if (!strcmp(arg + 10, "unsorted")) | |
1997 | revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED; | |
1998 | else | |
1999 | return error("invalid argument to --no-walk"); | |
f6aca0dc JN |
2000 | } else if (!strcmp(arg, "--do-walk")) { |
2001 | revs->no_walk = 0; | |
2002 | } else { | |
2003 | return 0; | |
2004 | } | |
2005 | ||
2006 | return 1; | |
2007 | } | |
2008 | ||
ae563542 LT |
2009 | /* |
2010 | * Parse revision information, filling in the "rev_info" structure, | |
2011 | * and removing the used arguments from the argument list. | |
2012 | * | |
765ac8ec LT |
2013 | * Returns the number of arguments left that weren't recognized |
2014 | * (which are also moved to the head of the argument list) | |
ae563542 | 2015 | */ |
32962c9b | 2016 | int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt) |
ae563542 | 2017 | { |
8e676e8b | 2018 | int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0, revarg_opt; |
4da5af31 | 2019 | struct cmdline_pathspec prune_data; |
9ef6aeb0 HV |
2020 | const char *submodule = NULL; |
2021 | ||
4da5af31 | 2022 | memset(&prune_data, 0, sizeof(prune_data)); |
9ef6aeb0 HV |
2023 | if (opt) |
2024 | submodule = opt->submodule; | |
ae563542 | 2025 | |
ae563542 | 2026 | /* First, search for "--" */ |
6d5b93f2 | 2027 | if (opt && opt->assume_dashdash) { |
ae563542 | 2028 | seen_dashdash = 1; |
6d5b93f2 CB |
2029 | } else { |
2030 | seen_dashdash = 0; | |
2031 | for (i = 1; i < argc; i++) { | |
2032 | const char *arg = argv[i]; | |
2033 | if (strcmp(arg, "--")) | |
2034 | continue; | |
2035 | argv[i] = NULL; | |
2036 | argc = i; | |
2037 | if (argv[i + 1]) | |
2038 | append_prune_data(&prune_data, argv + i + 1); | |
2039 | seen_dashdash = 1; | |
2040 | break; | |
2041 | } | |
ae563542 LT |
2042 | } |
2043 | ||
02e54220 PH |
2044 | /* Second, deal with arguments and options */ |
2045 | flags = 0; | |
d5f6b1d7 JH |
2046 | revarg_opt = opt ? opt->revarg_opt : 0; |
2047 | if (seen_dashdash) | |
2048 | revarg_opt |= REVARG_CANNOT_BE_FILENAME; | |
8b3dce56 | 2049 | read_from_stdin = 0; |
02e54220 | 2050 | for (left = i = 1; i < argc; i++) { |
ae563542 | 2051 | const char *arg = argv[i]; |
ae563542 | 2052 | if (*arg == '-') { |
cd2bdc53 | 2053 | int opts; |
02e54220 | 2054 | |
f6aca0dc JN |
2055 | opts = handle_revision_pseudo_opt(submodule, |
2056 | revs, argc - i, argv + i, | |
2057 | &flags); | |
2058 | if (opts > 0) { | |
2059 | i += opts - 1; | |
8e64006e JS |
2060 | continue; |
2061 | } | |
f6aca0dc | 2062 | |
8b3dce56 JH |
2063 | if (!strcmp(arg, "--stdin")) { |
2064 | if (revs->disable_stdin) { | |
2065 | argv[left++] = arg; | |
2066 | continue; | |
2067 | } | |
2068 | if (read_from_stdin++) | |
2069 | die("--stdin given twice?"); | |
60da8b15 | 2070 | read_revisions_from_stdin(revs, &prune_data); |
8b3dce56 JH |
2071 | continue; |
2072 | } | |
2d10c555 | 2073 | |
02e54220 | 2074 | opts = handle_revision_opt(revs, argc - i, argv + i, &left, argv); |
cd2bdc53 | 2075 | if (opts > 0) { |
cd2bdc53 LT |
2076 | i += opts - 1; |
2077 | continue; | |
2078 | } | |
02e54220 PH |
2079 | if (opts < 0) |
2080 | exit(128); | |
ae563542 LT |
2081 | continue; |
2082 | } | |
ae563542 | 2083 | |
8e676e8b JH |
2084 | |
2085 | if (handle_revision_arg(arg, revs, flags, revarg_opt)) { | |
5d6f0935 JH |
2086 | int j; |
2087 | if (seen_dashdash || *arg == '^') | |
ae563542 LT |
2088 | die("bad revision '%s'", arg); |
2089 | ||
ea92f41f JH |
2090 | /* If we didn't have a "--": |
2091 | * (1) all filenames must exist; | |
2092 | * (2) all rev-args must not be interpretable | |
2093 | * as a valid filename. | |
2094 | * but the latter we have checked in the main loop. | |
2095 | */ | |
e23d0b4a | 2096 | for (j = i; j < argc; j++) |
023e37c3 | 2097 | verify_filename(revs->prefix, argv[j], j == i); |
e23d0b4a | 2098 | |
60da8b15 | 2099 | append_prune_data(&prune_data, argv + i); |
ae563542 LT |
2100 | break; |
2101 | } | |
8fcaca3f DO |
2102 | else |
2103 | got_rev_arg = 1; | |
ae563542 | 2104 | } |
5d6f0935 | 2105 | |
4da5af31 | 2106 | if (prune_data.nr) { |
93e7d672 JH |
2107 | /* |
2108 | * If we need to introduce the magic "a lone ':' means no | |
2109 | * pathspec whatsoever", here is the place to do so. | |
2110 | * | |
2111 | * if (prune_data.nr == 1 && !strcmp(prune_data[0], ":")) { | |
2112 | * prune_data.nr = 0; | |
2113 | * prune_data.alloc = 0; | |
2114 | * free(prune_data.path); | |
2115 | * prune_data.path = NULL; | |
2116 | * } else { | |
2117 | * terminate prune_data.alloc with NULL and | |
2118 | * call init_pathspec() to set revs->prune_data here. | |
2119 | * } | |
2120 | */ | |
4da5af31 JH |
2121 | ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc); |
2122 | prune_data.path[prune_data.nr++] = NULL; | |
0fdc2ae5 NTND |
2123 | parse_pathspec(&revs->prune_data, 0, 0, |
2124 | revs->prefix, prune_data.path); | |
4da5af31 | 2125 | } |
5486ef0e | 2126 | |
02e54220 | 2127 | if (revs->def == NULL) |
32962c9b | 2128 | revs->def = opt ? opt->def : NULL; |
b4490059 JH |
2129 | if (opt && opt->tweak) |
2130 | opt->tweak(revs, opt); | |
02e54220 | 2131 | if (revs->show_merge) |
ae3e5e1e | 2132 | prepare_show_merge(revs); |
8fcaca3f | 2133 | if (revs->def && !revs->pending.nr && !got_rev_arg) { |
ae563542 | 2134 | unsigned char sha1[20]; |
cd2bdc53 | 2135 | struct object *object; |
249c8f4a | 2136 | struct object_context oc; |
33bd598c | 2137 | if (get_sha1_with_context(revs->def, 0, sha1, &oc)) |
02e54220 PH |
2138 | die("bad default revision '%s'", revs->def); |
2139 | object = get_reference(revs, revs->def, sha1, 0); | |
249c8f4a | 2140 | add_pending_object_with_mode(revs, object, revs->def, oc.mode); |
ae563542 | 2141 | } |
8efdc326 | 2142 | |
b7bb760d LT |
2143 | /* Did the user ask for any diff output? Run the diff! */ |
2144 | if (revs->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) | |
2145 | revs->diff = 1; | |
2146 | ||
0faf2da7 AL |
2147 | /* Pickaxe, diff-filter and rename following need diffs */ |
2148 | if (revs->diffopt.pickaxe || | |
2149 | revs->diffopt.filter || | |
2150 | DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES)) | |
b7bb760d LT |
2151 | revs->diff = 1; |
2152 | ||
9dad9d2e | 2153 | if (revs->topo_order) |
53069686 JH |
2154 | revs->limited = 1; |
2155 | ||
afe069d1 | 2156 | if (revs->prune_data.nr) { |
bd1928df | 2157 | copy_pathspec(&revs->pruning.pathspec, &revs->prune_data); |
750f7b66 | 2158 | /* Can't prune commits with rename following: the paths change.. */ |
8f67f8ae | 2159 | if (!DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES)) |
53b2c823 | 2160 | revs->prune = 1; |
cd2bdc53 | 2161 | if (!revs->full_diff) |
bd1928df NTND |
2162 | copy_pathspec(&revs->diffopt.pathspec, |
2163 | &revs->prune_data); | |
8efdc326 | 2164 | } |
b4490059 | 2165 | if (revs->combine_merges) |
cd2bdc53 | 2166 | revs->ignore_merges = 0; |
cd2bdc53 | 2167 | revs->diffopt.abbrev = revs->abbrev; |
12da1d1f TR |
2168 | |
2169 | if (revs->line_level_traverse) { | |
2170 | revs->limited = 1; | |
2171 | revs->topo_order = 1; | |
2172 | } | |
2173 | ||
28452655 | 2174 | diff_setup_done(&revs->diffopt); |
8efdc326 | 2175 | |
918d4e1c JH |
2176 | grep_commit_pattern_type(GREP_PATTERN_TYPE_UNSPECIFIED, |
2177 | &revs->grep_filter); | |
0843acfd | 2178 | compile_grep_patterns(&revs->grep_filter); |
bd95fcd3 | 2179 | |
d56651c0 SP |
2180 | if (revs->reverse && revs->reflog_info) |
2181 | die("cannot combine --reverse with --walk-reflogs"); | |
8bb65883 | 2182 | if (revs->rewrite_parents && revs->children.name) |
f35f5603 | 2183 | die("cannot combine --parents and --children"); |
d56651c0 | 2184 | |
7fefda5c AS |
2185 | /* |
2186 | * Limitations on the graph functionality | |
2187 | */ | |
2188 | if (revs->reverse && revs->graph) | |
2189 | die("cannot combine --reverse with --graph"); | |
2190 | ||
2191 | if (revs->reflog_info && revs->graph) | |
2192 | die("cannot combine --walk-reflogs with --graph"); | |
baa6378f JH |
2193 | if (!revs->reflog_info && revs->grep_filter.use_reflog_filter) |
2194 | die("cannot use --grep-reflog without --walk-reflogs"); | |
7fefda5c | 2195 | |
ae563542 LT |
2196 | return left; |
2197 | } | |
a4a88b2b | 2198 | |
f35f5603 JH |
2199 | static void add_child(struct rev_info *revs, struct commit *parent, struct commit *child) |
2200 | { | |
2201 | struct commit_list *l = xcalloc(1, sizeof(*l)); | |
2202 | ||
2203 | l->item = child; | |
2204 | l->next = add_decoration(&revs->children, &parent->object, l); | |
2205 | } | |
2206 | ||
d0af663e | 2207 | static int remove_duplicate_parents(struct rev_info *revs, struct commit *commit) |
6546b593 | 2208 | { |
d0af663e | 2209 | struct treesame_state *ts = lookup_decoration(&revs->treesame, &commit->object); |
6546b593 JH |
2210 | struct commit_list **pp, *p; |
2211 | int surviving_parents; | |
2212 | ||
2213 | /* Examine existing parents while marking ones we have seen... */ | |
2214 | pp = &commit->parents; | |
d0af663e | 2215 | surviving_parents = 0; |
6546b593 JH |
2216 | while ((p = *pp) != NULL) { |
2217 | struct commit *parent = p->item; | |
2218 | if (parent->object.flags & TMP_MARK) { | |
2219 | *pp = p->next; | |
d0af663e KB |
2220 | if (ts) |
2221 | compact_treesame(revs, commit, surviving_parents); | |
6546b593 JH |
2222 | continue; |
2223 | } | |
2224 | parent->object.flags |= TMP_MARK; | |
d0af663e | 2225 | surviving_parents++; |
6546b593 JH |
2226 | pp = &p->next; |
2227 | } | |
d0af663e | 2228 | /* clear the temporary mark */ |
6546b593 JH |
2229 | for (p = commit->parents; p; p = p->next) { |
2230 | p->item->object.flags &= ~TMP_MARK; | |
6546b593 | 2231 | } |
d0af663e | 2232 | /* no update_treesame() - removing duplicates can't affect TREESAME */ |
6546b593 JH |
2233 | return surviving_parents; |
2234 | } | |
2235 | ||
faf0156b JH |
2236 | struct merge_simplify_state { |
2237 | struct commit *simplified; | |
2238 | }; | |
2239 | ||
2240 | static struct merge_simplify_state *locate_simplify_state(struct rev_info *revs, struct commit *commit) | |
2241 | { | |
2242 | struct merge_simplify_state *st; | |
2243 | ||
2244 | st = lookup_decoration(&revs->merge_simplification, &commit->object); | |
2245 | if (!st) { | |
2246 | st = xcalloc(1, sizeof(*st)); | |
2247 | add_decoration(&revs->merge_simplification, &commit->object, st); | |
2248 | } | |
2249 | return st; | |
2250 | } | |
2251 | ||
d0af663e KB |
2252 | static int mark_redundant_parents(struct rev_info *revs, struct commit *commit) |
2253 | { | |
2254 | struct commit_list *h = reduce_heads(commit->parents); | |
2255 | int i = 0, marked = 0; | |
2256 | struct commit_list *po, *pn; | |
2257 | ||
2258 | /* Want these for sanity-checking only */ | |
2259 | int orig_cnt = commit_list_count(commit->parents); | |
2260 | int cnt = commit_list_count(h); | |
2261 | ||
2262 | /* | |
2263 | * Not ready to remove items yet, just mark them for now, based | |
2264 | * on the output of reduce_heads(). reduce_heads outputs the reduced | |
2265 | * set in its original order, so this isn't too hard. | |
2266 | */ | |
2267 | po = commit->parents; | |
2268 | pn = h; | |
2269 | while (po) { | |
2270 | if (pn && po->item == pn->item) { | |
2271 | pn = pn->next; | |
2272 | i++; | |
2273 | } else { | |
2274 | po->item->object.flags |= TMP_MARK; | |
2275 | marked++; | |
2276 | } | |
2277 | po=po->next; | |
2278 | } | |
2279 | ||
2280 | if (i != cnt || cnt+marked != orig_cnt) | |
2281 | die("mark_redundant_parents %d %d %d %d", orig_cnt, cnt, i, marked); | |
2282 | ||
2283 | free_commit_list(h); | |
2284 | ||
2285 | return marked; | |
2286 | } | |
2287 | ||
143f1eaf KB |
2288 | static int mark_treesame_root_parents(struct rev_info *revs, struct commit *commit) |
2289 | { | |
2290 | struct commit_list *p; | |
2291 | int marked = 0; | |
2292 | ||
2293 | for (p = commit->parents; p; p = p->next) { | |
2294 | struct commit *parent = p->item; | |
2295 | if (!parent->parents && (parent->object.flags & TREESAME)) { | |
2296 | parent->object.flags |= TMP_MARK; | |
2297 | marked++; | |
2298 | } | |
2299 | } | |
2300 | ||
2301 | return marked; | |
2302 | } | |
2303 | ||
9c129eab KB |
2304 | /* |
2305 | * Awkward naming - this means one parent we are TREESAME to. | |
2306 | * cf mark_treesame_root_parents: root parents that are TREESAME (to an | |
2307 | * empty tree). Better name suggestions? | |
2308 | */ | |
2309 | static int leave_one_treesame_to_parent(struct rev_info *revs, struct commit *commit) | |
2310 | { | |
2311 | struct treesame_state *ts = lookup_decoration(&revs->treesame, &commit->object); | |
2312 | struct commit *unmarked = NULL, *marked = NULL; | |
2313 | struct commit_list *p; | |
2314 | unsigned n; | |
2315 | ||
2316 | for (p = commit->parents, n = 0; p; p = p->next, n++) { | |
2317 | if (ts->treesame[n]) { | |
2318 | if (p->item->object.flags & TMP_MARK) { | |
2319 | if (!marked) | |
2320 | marked = p->item; | |
2321 | } else { | |
2322 | if (!unmarked) { | |
2323 | unmarked = p->item; | |
2324 | break; | |
2325 | } | |
2326 | } | |
2327 | } | |
2328 | } | |
2329 | ||
2330 | /* | |
2331 | * If we are TREESAME to a marked-for-deletion parent, but not to any | |
2332 | * unmarked parents, unmark the first TREESAME parent. This is the | |
2333 | * parent that the default simplify_history==1 scan would have followed, | |
2334 | * and it doesn't make sense to omit that path when asking for a | |
2335 | * simplified full history. Retaining it improves the chances of | |
2336 | * understanding odd missed merges that took an old version of a file. | |
2337 | * | |
2338 | * Example: | |
2339 | * | |
2340 | * I--------*X A modified the file, but mainline merge X used | |
2341 | * \ / "-s ours", so took the version from I. X is | |
2342 | * `-*A--' TREESAME to I and !TREESAME to A. | |
2343 | * | |
2344 | * Default log from X would produce "I". Without this check, | |
2345 | * --full-history --simplify-merges would produce "I-A-X", showing | |
2346 | * the merge commit X and that it changed A, but not making clear that | |
2347 | * it had just taken the I version. With this check, the topology above | |
2348 | * is retained. | |
2349 | * | |
2350 | * Note that it is possible that the simplification chooses a different | |
2351 | * TREESAME parent from the default, in which case this test doesn't | |
2352 | * activate, and we _do_ drop the default parent. Example: | |
2353 | * | |
2354 | * I------X A modified the file, but it was reverted in B, | |
2355 | * \ / meaning mainline merge X is TREESAME to both | |
2356 | * *A-*B parents. | |
2357 | * | |
2358 | * Default log would produce "I" by following the first parent; | |
2359 | * --full-history --simplify-merges will produce "I-A-B". But this is a | |
2360 | * reasonable result - it presents a logical full history leading from | |
2361 | * I to X, and X is not an important merge. | |
2362 | */ | |
2363 | if (!unmarked && marked) { | |
2364 | marked->object.flags &= ~TMP_MARK; | |
2365 | return 1; | |
2366 | } | |
2367 | ||
2368 | return 0; | |
2369 | } | |
2370 | ||
d0af663e KB |
2371 | static int remove_marked_parents(struct rev_info *revs, struct commit *commit) |
2372 | { | |
2373 | struct commit_list **pp, *p; | |
2374 | int nth_parent, removed = 0; | |
2375 | ||
2376 | pp = &commit->parents; | |
2377 | nth_parent = 0; | |
2378 | while ((p = *pp) != NULL) { | |
2379 | struct commit *parent = p->item; | |
2380 | if (parent->object.flags & TMP_MARK) { | |
2381 | parent->object.flags &= ~TMP_MARK; | |
2382 | *pp = p->next; | |
2383 | free(p); | |
2384 | removed++; | |
2385 | compact_treesame(revs, commit, nth_parent); | |
2386 | continue; | |
2387 | } | |
2388 | pp = &p->next; | |
2389 | nth_parent++; | |
2390 | } | |
2391 | ||
2392 | /* Removing parents can only increase TREESAMEness */ | |
2393 | if (removed && !(commit->object.flags & TREESAME)) | |
2394 | update_treesame(revs, commit); | |
2395 | ||
2396 | return nth_parent; | |
2397 | } | |
2398 | ||
faf0156b | 2399 | static struct commit_list **simplify_one(struct rev_info *revs, struct commit *commit, struct commit_list **tail) |
6546b593 JH |
2400 | { |
2401 | struct commit_list *p; | |
4d826608 | 2402 | struct commit *parent; |
faf0156b | 2403 | struct merge_simplify_state *st, *pst; |
6546b593 JH |
2404 | int cnt; |
2405 | ||
faf0156b JH |
2406 | st = locate_simplify_state(revs, commit); |
2407 | ||
6546b593 | 2408 | /* |
6546b593 JH |
2409 | * Have we handled this one? |
2410 | */ | |
faf0156b | 2411 | if (st->simplified) |
6546b593 JH |
2412 | return tail; |
2413 | ||
2414 | /* | |
2415 | * An UNINTERESTING commit simplifies to itself, so does a | |
2416 | * root commit. We do not rewrite parents of such commit | |
2417 | * anyway. | |
2418 | */ | |
2419 | if ((commit->object.flags & UNINTERESTING) || !commit->parents) { | |
faf0156b | 2420 | st->simplified = commit; |
6546b593 JH |
2421 | return tail; |
2422 | } | |
2423 | ||
2424 | /* | |
6e513ba3 JH |
2425 | * Do we know what commit all of our parents that matter |
2426 | * should be rewritten to? Otherwise we are not ready to | |
2427 | * rewrite this one yet. | |
6546b593 JH |
2428 | */ |
2429 | for (cnt = 0, p = commit->parents; p; p = p->next) { | |
faf0156b JH |
2430 | pst = locate_simplify_state(revs, p->item); |
2431 | if (!pst->simplified) { | |
6546b593 JH |
2432 | tail = &commit_list_insert(p->item, tail)->next; |
2433 | cnt++; | |
2434 | } | |
6e513ba3 JH |
2435 | if (revs->first_parent_only) |
2436 | break; | |
6546b593 | 2437 | } |
53030f8d JH |
2438 | if (cnt) { |
2439 | tail = &commit_list_insert(commit, tail)->next; | |
6546b593 | 2440 | return tail; |
53030f8d | 2441 | } |
6546b593 JH |
2442 | |
2443 | /* | |
d0af663e KB |
2444 | * Rewrite our list of parents. Note that this cannot |
2445 | * affect our TREESAME flags in any way - a commit is | |
2446 | * always TREESAME to its simplification. | |
6546b593 | 2447 | */ |
faf0156b JH |
2448 | for (p = commit->parents; p; p = p->next) { |
2449 | pst = locate_simplify_state(revs, p->item); | |
2450 | p->item = pst->simplified; | |
6e513ba3 JH |
2451 | if (revs->first_parent_only) |
2452 | break; | |
faf0156b | 2453 | } |
4b7f53da | 2454 | |
0290bf12 | 2455 | if (revs->first_parent_only) |
6e513ba3 | 2456 | cnt = 1; |
0290bf12 | 2457 | else |
d0af663e | 2458 | cnt = remove_duplicate_parents(revs, commit); |
6546b593 JH |
2459 | |
2460 | /* | |
2461 | * It is possible that we are a merge and one side branch | |
2462 | * does not have any commit that touches the given paths; | |
d0af663e KB |
2463 | * in such a case, the immediate parent from that branch |
2464 | * will be rewritten to be the merge base. | |
6546b593 JH |
2465 | * |
2466 | * o----X X: the commit we are looking at; | |
2467 | * / / o: a commit that touches the paths; | |
2468 | * ---o----' | |
2469 | * | |
143f1eaf KB |
2470 | * Further, a merge of an independent branch that doesn't |
2471 | * touch the path will reduce to a treesame root parent: | |
2472 | * | |
2473 | * ----o----X X: the commit we are looking at; | |
2474 | * / o: a commit that touches the paths; | |
2475 | * r r: a root commit not touching the paths | |
2476 | * | |
2477 | * Detect and simplify both cases. | |
6546b593 JH |
2478 | */ |
2479 | if (1 < cnt) { | |
d0af663e | 2480 | int marked = mark_redundant_parents(revs, commit); |
143f1eaf | 2481 | marked += mark_treesame_root_parents(revs, commit); |
9c129eab KB |
2482 | if (marked) |
2483 | marked -= leave_one_treesame_to_parent(revs, commit); | |
d0af663e KB |
2484 | if (marked) |
2485 | cnt = remove_marked_parents(revs, commit); | |
6546b593 JH |
2486 | } |
2487 | ||
2488 | /* | |
2489 | * A commit simplifies to itself if it is a root, if it is | |
2490 | * UNINTERESTING, if it touches the given paths, or if it is a | |
4d826608 | 2491 | * merge and its parents don't simplify to one relevant commit |
6546b593 JH |
2492 | * (the first two cases are already handled at the beginning of |
2493 | * this function). | |
2494 | * | |
4d826608 KB |
2495 | * Otherwise, it simplifies to what its sole relevant parent |
2496 | * simplifies to. | |
6546b593 JH |
2497 | */ |
2498 | if (!cnt || | |
2499 | (commit->object.flags & UNINTERESTING) || | |
2500 | !(commit->object.flags & TREESAME) || | |
4d826608 | 2501 | (parent = one_relevant_parent(revs, commit->parents)) == NULL) |
faf0156b JH |
2502 | st->simplified = commit; |
2503 | else { | |
4d826608 | 2504 | pst = locate_simplify_state(revs, parent); |
faf0156b JH |
2505 | st->simplified = pst->simplified; |
2506 | } | |
6546b593 JH |
2507 | return tail; |
2508 | } | |
2509 | ||
2510 | static void simplify_merges(struct rev_info *revs) | |
2511 | { | |
ab9d75a8 | 2512 | struct commit_list *list, *next; |
6546b593 | 2513 | struct commit_list *yet_to_do, **tail; |
ab9d75a8 | 2514 | struct commit *commit; |
6546b593 | 2515 | |
5eac739e JH |
2516 | if (!revs->prune) |
2517 | return; | |
65347030 | 2518 | |
6546b593 JH |
2519 | /* feed the list reversed */ |
2520 | yet_to_do = NULL; | |
ab9d75a8 JH |
2521 | for (list = revs->commits; list; list = next) { |
2522 | commit = list->item; | |
2523 | next = list->next; | |
2524 | /* | |
2525 | * Do not free(list) here yet; the original list | |
2526 | * is used later in this function. | |
2527 | */ | |
2528 | commit_list_insert(commit, &yet_to_do); | |
2529 | } | |
6546b593 JH |
2530 | while (yet_to_do) { |
2531 | list = yet_to_do; | |
2532 | yet_to_do = NULL; | |
2533 | tail = &yet_to_do; | |
2534 | while (list) { | |
ab9d75a8 JH |
2535 | commit = list->item; |
2536 | next = list->next; | |
6546b593 JH |
2537 | free(list); |
2538 | list = next; | |
faf0156b | 2539 | tail = simplify_one(revs, commit, tail); |
6546b593 JH |
2540 | } |
2541 | } | |
2542 | ||
2543 | /* clean up the result, removing the simplified ones */ | |
2544 | list = revs->commits; | |
2545 | revs->commits = NULL; | |
2546 | tail = &revs->commits; | |
2547 | while (list) { | |
faf0156b | 2548 | struct merge_simplify_state *st; |
ab9d75a8 JH |
2549 | |
2550 | commit = list->item; | |
2551 | next = list->next; | |
6546b593 JH |
2552 | free(list); |
2553 | list = next; | |
faf0156b JH |
2554 | st = locate_simplify_state(revs, commit); |
2555 | if (st->simplified == commit) | |
6546b593 JH |
2556 | tail = &commit_list_insert(commit, tail)->next; |
2557 | } | |
6546b593 JH |
2558 | } |
2559 | ||
f35f5603 JH |
2560 | static void set_children(struct rev_info *revs) |
2561 | { | |
2562 | struct commit_list *l; | |
2563 | for (l = revs->commits; l; l = l->next) { | |
2564 | struct commit *commit = l->item; | |
2565 | struct commit_list *p; | |
2566 | ||
2567 | for (p = commit->parents; p; p = p->next) | |
2568 | add_child(revs, p->item, commit); | |
2569 | } | |
2570 | } | |
2571 | ||
bcc0a3ea HV |
2572 | void reset_revision_walk(void) |
2573 | { | |
2574 | clear_object_flags(SEEN | ADDED | SHOWN); | |
2575 | } | |
2576 | ||
cc0e6c5a | 2577 | int prepare_revision_walk(struct rev_info *revs) |
a4a88b2b | 2578 | { |
1f1e895f | 2579 | int nr = revs->pending.nr; |
94d23673 | 2580 | struct object_array_entry *e, *list; |
2e7da8e9 | 2581 | struct commit_list **next = &revs->commits; |
cd2bdc53 | 2582 | |
94d23673 | 2583 | e = list = revs->pending.objects; |
1f1e895f LT |
2584 | revs->pending.nr = 0; |
2585 | revs->pending.alloc = 0; | |
2586 | revs->pending.objects = NULL; | |
2587 | while (--nr >= 0) { | |
94d23673 | 2588 | struct commit *commit = handle_commit(revs, e->item, e->name); |
cd2bdc53 LT |
2589 | if (commit) { |
2590 | if (!(commit->object.flags & SEEN)) { | |
2591 | commit->object.flags |= SEEN; | |
2e7da8e9 | 2592 | next = commit_list_append(commit, next); |
cd2bdc53 LT |
2593 | } |
2594 | } | |
94d23673 | 2595 | e++; |
cd2bdc53 | 2596 | } |
4a43d374 RS |
2597 | if (!revs->leak_pending) |
2598 | free(list); | |
cd2bdc53 | 2599 | |
d0af663e | 2600 | /* Signal whether we need per-parent treesame decoration */ |
4d826608 KB |
2601 | if (revs->simplify_merges || |
2602 | (revs->limited && limiting_can_increase_treesame(revs))) | |
d0af663e KB |
2603 | revs->treesame.name = "treesame"; |
2604 | ||
ca92e59e MZ |
2605 | if (revs->no_walk != REVISION_WALK_NO_WALK_UNSORTED) |
2606 | commit_list_sort_by_date(&revs->commits); | |
ba1d4505 | 2607 | if (revs->no_walk) |
cc0e6c5a | 2608 | return 0; |
a4a88b2b | 2609 | if (revs->limited) |
cc0e6c5a AR |
2610 | if (limit_list(revs) < 0) |
2611 | return -1; | |
a4a88b2b | 2612 | if (revs->topo_order) |
08f704f2 | 2613 | sort_in_topological_order(&revs->commits, revs->sort_order); |
12da1d1f TR |
2614 | if (revs->line_level_traverse) |
2615 | line_log_filter(revs); | |
6546b593 JH |
2616 | if (revs->simplify_merges) |
2617 | simplify_merges(revs); | |
f35f5603 JH |
2618 | if (revs->children.name) |
2619 | set_children(revs); | |
cc0e6c5a | 2620 | return 0; |
a4a88b2b LT |
2621 | } |
2622 | ||
cc0e6c5a | 2623 | static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp) |
765ac8ec | 2624 | { |
fce87ae5 AG |
2625 | struct commit_list *cache = NULL; |
2626 | ||
765ac8ec LT |
2627 | for (;;) { |
2628 | struct commit *p = *pp; | |
3381c790 | 2629 | if (!revs->limited) |
fce87ae5 | 2630 | if (add_parents_to_list(revs, p, &revs->commits, &cache) < 0) |
cc0e6c5a | 2631 | return rewrite_one_error; |
7dc0fe3b LT |
2632 | if (p->object.flags & UNINTERESTING) |
2633 | return rewrite_one_ok; | |
2634 | if (!(p->object.flags & TREESAME)) | |
cc0e6c5a | 2635 | return rewrite_one_ok; |
765ac8ec | 2636 | if (!p->parents) |
cc0e6c5a | 2637 | return rewrite_one_noparents; |
4d826608 KB |
2638 | if ((p = one_relevant_parent(revs, p->parents)) == NULL) |
2639 | return rewrite_one_ok; | |
2640 | *pp = p; | |
765ac8ec LT |
2641 | } |
2642 | } | |
2643 | ||
c7edcae0 BY |
2644 | int rewrite_parents(struct rev_info *revs, struct commit *commit, |
2645 | rewrite_parent_fn_t rewrite_parent) | |
765ac8ec LT |
2646 | { |
2647 | struct commit_list **pp = &commit->parents; | |
2648 | while (*pp) { | |
2649 | struct commit_list *parent = *pp; | |
c7edcae0 | 2650 | switch (rewrite_parent(revs, &parent->item)) { |
cc0e6c5a AR |
2651 | case rewrite_one_ok: |
2652 | break; | |
2653 | case rewrite_one_noparents: | |
765ac8ec LT |
2654 | *pp = parent->next; |
2655 | continue; | |
cc0e6c5a AR |
2656 | case rewrite_one_error: |
2657 | return -1; | |
765ac8ec LT |
2658 | } |
2659 | pp = &parent->next; | |
2660 | } | |
d0af663e | 2661 | remove_duplicate_parents(revs, commit); |
cc0e6c5a | 2662 | return 0; |
765ac8ec LT |
2663 | } |
2664 | ||
d72fbe81 AP |
2665 | static int commit_rewrite_person(struct strbuf *buf, const char *what, struct string_list *mailmap) |
2666 | { | |
2667 | char *person, *endp; | |
2668 | size_t len, namelen, maillen; | |
2669 | const char *name; | |
2670 | const char *mail; | |
2671 | struct ident_split ident; | |
2672 | ||
2673 | person = strstr(buf->buf, what); | |
2674 | if (!person) | |
2675 | return 0; | |
2676 | ||
2677 | person += strlen(what); | |
2678 | endp = strchr(person, '\n'); | |
2679 | if (!endp) | |
2680 | return 0; | |
2681 | ||
2682 | len = endp - person; | |
2683 | ||
2684 | if (split_ident_line(&ident, person, len)) | |
2685 | return 0; | |
2686 | ||
2687 | mail = ident.mail_begin; | |
2688 | maillen = ident.mail_end - ident.mail_begin; | |
2689 | name = ident.name_begin; | |
2690 | namelen = ident.name_end - ident.name_begin; | |
2691 | ||
2692 | if (map_user(mailmap, &mail, &maillen, &name, &namelen)) { | |
2693 | struct strbuf namemail = STRBUF_INIT; | |
2694 | ||
2695 | strbuf_addf(&namemail, "%.*s <%.*s>", | |
2696 | (int)namelen, name, (int)maillen, mail); | |
2697 | ||
2698 | strbuf_splice(buf, ident.name_begin - buf->buf, | |
2699 | ident.mail_end - ident.name_begin + 1, | |
2700 | namemail.buf, namemail.len); | |
2701 | ||
2702 | strbuf_release(&namemail); | |
2703 | ||
2704 | return 1; | |
2705 | } | |
2706 | ||
2707 | return 0; | |
2708 | } | |
2709 | ||
8ecae9b0 JH |
2710 | static int commit_match(struct commit *commit, struct rev_info *opt) |
2711 | { | |
72fd13f7 | 2712 | int retval; |
04deccda JK |
2713 | const char *encoding; |
2714 | char *message; | |
72fd13f7 | 2715 | struct strbuf buf = STRBUF_INIT; |
04deccda | 2716 | |
80235ba7 | 2717 | if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list) |
8ecae9b0 | 2718 | return 1; |
baa6378f JH |
2719 | |
2720 | /* Prepend "fake" headers as needed */ | |
2721 | if (opt->grep_filter.use_reflog_filter) { | |
72fd13f7 NTND |
2722 | strbuf_addstr(&buf, "reflog "); |
2723 | get_reflog_message(&buf, opt->reflog_info); | |
2724 | strbuf_addch(&buf, '\n'); | |
72fd13f7 | 2725 | } |
baa6378f | 2726 | |
04deccda JK |
2727 | /* |
2728 | * We grep in the user's output encoding, under the assumption that it | |
2729 | * is the encoding they are most likely to write their grep pattern | |
2730 | * for. In addition, it means we will match the "notes" encoding below, | |
2731 | * so we will not end up with a buffer that has two different encodings | |
2732 | * in it. | |
2733 | */ | |
2734 | encoding = get_log_output_encoding(); | |
5a10d236 | 2735 | message = logmsg_reencode(commit, NULL, encoding); |
04deccda | 2736 | |
baa6378f JH |
2737 | /* Copy the commit to temporary if we are using "fake" headers */ |
2738 | if (buf.len) | |
04deccda | 2739 | strbuf_addstr(&buf, message); |
baa6378f | 2740 | |
df874fa8 | 2741 | if (opt->grep_filter.header_list && opt->mailmap) { |
d72fbe81 | 2742 | if (!buf.len) |
04deccda | 2743 | strbuf_addstr(&buf, message); |
d72fbe81 AP |
2744 | |
2745 | commit_rewrite_person(&buf, "\nauthor ", opt->mailmap); | |
2746 | commit_rewrite_person(&buf, "\ncommitter ", opt->mailmap); | |
2747 | } | |
2748 | ||
38cfe915 NTND |
2749 | /* Append "fake" message parts as needed */ |
2750 | if (opt->show_notes) { | |
2751 | if (!buf.len) | |
04deccda JK |
2752 | strbuf_addstr(&buf, message); |
2753 | format_display_notes(commit->object.sha1, &buf, encoding, 1); | |
38cfe915 NTND |
2754 | } |
2755 | ||
04deccda | 2756 | /* Find either in the original commit message, or in the temporary */ |
72fd13f7 NTND |
2757 | if (buf.len) |
2758 | retval = grep_buffer(&opt->grep_filter, buf.buf, buf.len); | |
2759 | else | |
2760 | retval = grep_buffer(&opt->grep_filter, | |
04deccda | 2761 | message, strlen(message)); |
72fd13f7 | 2762 | strbuf_release(&buf); |
04deccda | 2763 | logmsg_free(message, commit); |
72fd13f7 | 2764 | return retval; |
8ecae9b0 JH |
2765 | } |
2766 | ||
53d00b39 | 2767 | static inline int want_ancestry(const struct rev_info *revs) |
f35f5603 | 2768 | { |
8bb65883 | 2769 | return (revs->rewrite_parents || revs->children.name); |
f35f5603 JH |
2770 | } |
2771 | ||
beb5af43 | 2772 | enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit) |
252a7c02 LT |
2773 | { |
2774 | if (commit->object.flags & SHOWN) | |
2775 | return commit_ignore; | |
4d6acb70 | 2776 | if (revs->unpacked && has_sha1_pack(commit->object.sha1)) |
252a7c02 | 2777 | return commit_ignore; |
3131b713 LT |
2778 | if (revs->show_all) |
2779 | return commit_show; | |
252a7c02 LT |
2780 | if (commit->object.flags & UNINTERESTING) |
2781 | return commit_ignore; | |
2782 | if (revs->min_age != -1 && (commit->date > revs->min_age)) | |
2783 | return commit_ignore; | |
ad5aeede | 2784 | if (revs->min_parents || (revs->max_parents >= 0)) { |
bf3418b0 | 2785 | int n = commit_list_count(commit->parents); |
ad5aeede MG |
2786 | if ((n < revs->min_parents) || |
2787 | ((revs->max_parents >= 0) && (n > revs->max_parents))) | |
2788 | return commit_ignore; | |
2789 | } | |
252a7c02 LT |
2790 | if (!commit_match(commit, revs)) |
2791 | return commit_ignore; | |
53b2c823 | 2792 | if (revs->prune && revs->dense) { |
252a7c02 | 2793 | /* Commit without changes? */ |
7dc0fe3b | 2794 | if (commit->object.flags & TREESAME) { |
bf3418b0 KB |
2795 | int n; |
2796 | struct commit_list *p; | |
252a7c02 | 2797 | /* drop merges unless we want parenthood */ |
f35f5603 | 2798 | if (!want_ancestry(revs)) |
252a7c02 | 2799 | return commit_ignore; |
bf3418b0 KB |
2800 | /* |
2801 | * If we want ancestry, then need to keep any merges | |
2802 | * between relevant commits to tie together topology. | |
2803 | * For consistency with TREESAME and simplification | |
2804 | * use "relevant" here rather than just INTERESTING, | |
2805 | * to treat bottom commit(s) as part of the topology. | |
2806 | */ | |
2807 | for (n = 0, p = commit->parents; p; p = p->next) | |
2808 | if (relevant_commit(p->item)) | |
2809 | if (++n >= 2) | |
2810 | return commit_show; | |
2811 | return commit_ignore; | |
252a7c02 | 2812 | } |
252a7c02 LT |
2813 | } |
2814 | return commit_show; | |
2815 | } | |
2816 | ||
beb5af43 AS |
2817 | enum commit_action simplify_commit(struct rev_info *revs, struct commit *commit) |
2818 | { | |
2819 | enum commit_action action = get_commit_action(revs, commit); | |
2820 | ||
2821 | if (action == commit_show && | |
2822 | !revs->show_all && | |
2823 | revs->prune && revs->dense && want_ancestry(revs)) { | |
53d00b39 TR |
2824 | /* |
2825 | * --full-diff on simplified parents is no good: it | |
2826 | * will show spurious changes from the commits that | |
2827 | * were elided. So we save the parents on the side | |
2828 | * when --full-diff is in effect. | |
2829 | */ | |
2830 | if (revs->full_diff) | |
2831 | save_parents(revs, commit); | |
c7edcae0 | 2832 | if (rewrite_parents(revs, commit, rewrite_one) < 0) |
beb5af43 AS |
2833 | return commit_error; |
2834 | } | |
2835 | return action; | |
2836 | } | |
2837 | ||
d5db6c9e | 2838 | static struct commit *get_revision_1(struct rev_info *revs) |
a4a88b2b | 2839 | { |
d5db6c9e | 2840 | if (!revs->commits) |
a4a88b2b | 2841 | return NULL; |
a4a88b2b | 2842 | |
765ac8ec | 2843 | do { |
cb115748 LT |
2844 | struct commit_list *entry = revs->commits; |
2845 | struct commit *commit = entry->item; | |
ea5ed3ab | 2846 | |
cb115748 LT |
2847 | revs->commits = entry->next; |
2848 | free(entry); | |
2a0925be | 2849 | |
ffa1eeae | 2850 | if (revs->reflog_info) { |
838f9a15 | 2851 | save_parents(revs, commit); |
8860fd42 | 2852 | fake_reflog_parent(revs->reflog_info, commit); |
ffa1eeae JK |
2853 | commit->object.flags &= ~(ADDED | SEEN | SHOWN); |
2854 | } | |
8860fd42 | 2855 | |
2a0925be LT |
2856 | /* |
2857 | * If we haven't done the list limiting, we need to look at | |
be7db6e5 LT |
2858 | * the parents here. We also need to do the date-based limiting |
2859 | * that we'd otherwise have done in limit_list(). | |
2a0925be | 2860 | */ |
be7db6e5 | 2861 | if (!revs->limited) { |
744f4985 | 2862 | if (revs->max_age != -1 && |
86ab4906 JH |
2863 | (commit->date < revs->max_age)) |
2864 | continue; | |
fce87ae5 | 2865 | if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) |
ed62089c JH |
2866 | die("Failed to traverse parents of commit %s", |
2867 | sha1_to_hex(commit->object.sha1)); | |
be7db6e5 | 2868 | } |
744f4985 | 2869 | |
252a7c02 LT |
2870 | switch (simplify_commit(revs, commit)) { |
2871 | case commit_ignore: | |
8ecae9b0 | 2872 | continue; |
252a7c02 | 2873 | case commit_error: |
ed62089c JH |
2874 | die("Failed to simplify parents of commit %s", |
2875 | sha1_to_hex(commit->object.sha1)); | |
252a7c02 LT |
2876 | default: |
2877 | return commit; | |
384e99a4 | 2878 | } |
765ac8ec LT |
2879 | } while (revs->commits); |
2880 | return NULL; | |
2881 | } | |
d5db6c9e | 2882 | |
be6754c6 MH |
2883 | /* |
2884 | * Return true for entries that have not yet been shown. (This is an | |
2885 | * object_array_each_func_t.) | |
2886 | */ | |
2887 | static int entry_unshown(struct object_array_entry *entry, void *cb_data_unused) | |
86ab4906 | 2888 | { |
be6754c6 MH |
2889 | return !(entry->item->flags & SHOWN); |
2890 | } | |
86ab4906 | 2891 | |
be6754c6 MH |
2892 | /* |
2893 | * If array is on the verge of a realloc, garbage-collect any entries | |
2894 | * that have already been shown to try to free up some space. | |
2895 | */ | |
2896 | static void gc_boundary(struct object_array *array) | |
2897 | { | |
2898 | if (array->nr == array->alloc) | |
2899 | object_array_filter(array, entry_unshown, NULL); | |
86ab4906 JH |
2900 | } |
2901 | ||
4603ec0f AS |
2902 | static void create_boundary_commit_list(struct rev_info *revs) |
2903 | { | |
2904 | unsigned i; | |
2905 | struct commit *c; | |
2906 | struct object_array *array = &revs->boundary_commits; | |
2907 | struct object_array_entry *objects = array->objects; | |
2908 | ||
2909 | /* | |
2910 | * If revs->commits is non-NULL at this point, an error occurred in | |
2911 | * get_revision_1(). Ignore the error and continue printing the | |
2912 | * boundary commits anyway. (This is what the code has always | |
2913 | * done.) | |
2914 | */ | |
2915 | if (revs->commits) { | |
2916 | free_commit_list(revs->commits); | |
2917 | revs->commits = NULL; | |
2918 | } | |
2919 | ||
2920 | /* | |
2921 | * Put all of the actual boundary commits from revs->boundary_commits | |
2922 | * into revs->commits | |
2923 | */ | |
2924 | for (i = 0; i < array->nr; i++) { | |
2925 | c = (struct commit *)(objects[i].item); | |
2926 | if (!c) | |
2927 | continue; | |
2928 | if (!(c->object.flags & CHILD_SHOWN)) | |
2929 | continue; | |
2930 | if (c->object.flags & (SHOWN | BOUNDARY)) | |
2931 | continue; | |
2932 | c->object.flags |= BOUNDARY; | |
2933 | commit_list_insert(c, &revs->commits); | |
2934 | } | |
2935 | ||
2936 | /* | |
2937 | * If revs->topo_order is set, sort the boundary commits | |
2938 | * in topological order | |
2939 | */ | |
08f704f2 | 2940 | sort_in_topological_order(&revs->commits, revs->sort_order); |
4603ec0f AS |
2941 | } |
2942 | ||
7fefda5c | 2943 | static struct commit *get_revision_internal(struct rev_info *revs) |
d5db6c9e JH |
2944 | { |
2945 | struct commit *c = NULL; | |
86ab4906 JH |
2946 | struct commit_list *l; |
2947 | ||
2948 | if (revs->boundary == 2) { | |
4603ec0f AS |
2949 | /* |
2950 | * All of the normal commits have already been returned, | |
2951 | * and we are now returning boundary commits. | |
2952 | * create_boundary_commit_list() has populated | |
2953 | * revs->commits with the remaining commits to return. | |
2954 | */ | |
2955 | c = pop_commit(&revs->commits); | |
2956 | if (c) | |
2957 | c->object.flags |= SHOWN; | |
9c5e66e9 JS |
2958 | return c; |
2959 | } | |
2960 | ||
86ab4906 | 2961 | /* |
b72a1904 JK |
2962 | * If our max_count counter has reached zero, then we are done. We |
2963 | * don't simply return NULL because we still might need to show | |
2964 | * boundary commits. But we want to avoid calling get_revision_1, which | |
2965 | * might do a considerable amount of work finding the next commit only | |
2966 | * for us to throw it away. | |
2967 | * | |
2968 | * If it is non-zero, then either we don't have a max_count at all | |
2969 | * (-1), or it is still counting, in which case we decrement. | |
86ab4906 | 2970 | */ |
b72a1904 JK |
2971 | if (revs->max_count) { |
2972 | c = get_revision_1(revs); | |
2973 | if (c) { | |
2974 | while (0 < revs->skip_count) { | |
2975 | revs->skip_count--; | |
2976 | c = get_revision_1(revs); | |
2977 | if (!c) | |
2978 | break; | |
2979 | } | |
8839ac94 | 2980 | } |
86ab4906 | 2981 | |
b72a1904 JK |
2982 | if (revs->max_count > 0) |
2983 | revs->max_count--; | |
d5db6c9e | 2984 | } |
86ab4906 | 2985 | |
c33d8593 JH |
2986 | if (c) |
2987 | c->object.flags |= SHOWN; | |
2988 | ||
2989 | if (!revs->boundary) { | |
d5db6c9e | 2990 | return c; |
c33d8593 | 2991 | } |
86ab4906 JH |
2992 | |
2993 | if (!c) { | |
2994 | /* | |
2995 | * get_revision_1() runs out the commits, and | |
2996 | * we are done computing the boundaries. | |
2997 | * switch to boundary commits output mode. | |
2998 | */ | |
2999 | revs->boundary = 2; | |
4603ec0f AS |
3000 | |
3001 | /* | |
3002 | * Update revs->commits to contain the list of | |
3003 | * boundary commits. | |
3004 | */ | |
3005 | create_boundary_commit_list(revs); | |
3006 | ||
3c68d67b | 3007 | return get_revision_internal(revs); |
86ab4906 JH |
3008 | } |
3009 | ||
3010 | /* | |
3011 | * boundary commits are the commits that are parents of the | |
3012 | * ones we got from get_revision_1() but they themselves are | |
3013 | * not returned from get_revision_1(). Before returning | |
3014 | * 'c', we need to mark its parents that they could be boundaries. | |
3015 | */ | |
3016 | ||
3017 | for (l = c->parents; l; l = l->next) { | |
3018 | struct object *p; | |
3019 | p = &(l->item->object); | |
c33d8593 | 3020 | if (p->flags & (CHILD_SHOWN | SHOWN)) |
86ab4906 JH |
3021 | continue; |
3022 | p->flags |= CHILD_SHOWN; | |
3023 | gc_boundary(&revs->boundary_commits); | |
3024 | add_object_array(p, NULL, &revs->boundary_commits); | |
3025 | } | |
3026 | ||
3027 | return c; | |
d5db6c9e | 3028 | } |
7fefda5c AS |
3029 | |
3030 | struct commit *get_revision(struct rev_info *revs) | |
3031 | { | |
498bcd31 TR |
3032 | struct commit *c; |
3033 | struct commit_list *reversed; | |
3034 | ||
3035 | if (revs->reverse) { | |
3036 | reversed = NULL; | |
3037 | while ((c = get_revision_internal(revs))) { | |
3038 | commit_list_insert(c, &reversed); | |
3039 | } | |
3040 | revs->commits = reversed; | |
3041 | revs->reverse = 0; | |
3042 | revs->reverse_output_stage = 1; | |
3043 | } | |
3044 | ||
3045 | if (revs->reverse_output_stage) | |
3046 | return pop_commit(&revs->commits); | |
3047 | ||
3048 | c = get_revision_internal(revs); | |
7fefda5c AS |
3049 | if (c && revs->graph) |
3050 | graph_update(revs->graph, c); | |
53d00b39 TR |
3051 | if (!c) |
3052 | free_saved_parents(revs); | |
7fefda5c AS |
3053 | return c; |
3054 | } | |
1df2d656 MG |
3055 | |
3056 | char *get_revision_mark(const struct rev_info *revs, const struct commit *commit) | |
3057 | { | |
3058 | if (commit->object.flags & BOUNDARY) | |
3059 | return "-"; | |
3060 | else if (commit->object.flags & UNINTERESTING) | |
3061 | return "^"; | |
adbbb31e MG |
3062 | else if (commit->object.flags & PATCHSAME) |
3063 | return "="; | |
1df2d656 MG |
3064 | else if (!revs || revs->left_right) { |
3065 | if (commit->object.flags & SYMMETRIC_LEFT) | |
3066 | return "<"; | |
3067 | else | |
3068 | return ">"; | |
3069 | } else if (revs->graph) | |
3070 | return "*"; | |
adbbb31e MG |
3071 | else if (revs->cherry_mark) |
3072 | return "+"; | |
1df2d656 MG |
3073 | return ""; |
3074 | } | |
b1b47554 MG |
3075 | |
3076 | void put_revision_mark(const struct rev_info *revs, const struct commit *commit) | |
3077 | { | |
3078 | char *mark = get_revision_mark(revs, commit); | |
3079 | if (!strlen(mark)) | |
3080 | return; | |
3081 | fputs(mark, stdout); | |
3082 | putchar(' '); | |
3083 | } | |
53d00b39 TR |
3084 | |
3085 | define_commit_slab(saved_parents, struct commit_list *); | |
3086 | ||
838f9a15 TR |
3087 | #define EMPTY_PARENT_LIST ((struct commit_list *)-1) |
3088 | ||
53d00b39 TR |
3089 | void save_parents(struct rev_info *revs, struct commit *commit) |
3090 | { | |
3091 | struct commit_list **pp; | |
3092 | ||
3093 | if (!revs->saved_parents_slab) { | |
3094 | revs->saved_parents_slab = xmalloc(sizeof(struct saved_parents)); | |
3095 | init_saved_parents(revs->saved_parents_slab); | |
3096 | } | |
3097 | ||
3098 | pp = saved_parents_at(revs->saved_parents_slab, commit); | |
838f9a15 TR |
3099 | |
3100 | /* | |
3101 | * When walking with reflogs, we may visit the same commit | |
3102 | * several times: once for each appearance in the reflog. | |
3103 | * | |
3104 | * In this case, save_parents() will be called multiple times. | |
3105 | * We want to keep only the first set of parents. We need to | |
3106 | * store a sentinel value for an empty (i.e., NULL) parent | |
3107 | * list to distinguish it from a not-yet-saved list, however. | |
3108 | */ | |
3109 | if (*pp) | |
3110 | return; | |
3111 | if (commit->parents) | |
3112 | *pp = copy_commit_list(commit->parents); | |
3113 | else | |
3114 | *pp = EMPTY_PARENT_LIST; | |
53d00b39 TR |
3115 | } |
3116 | ||
3117 | struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit) | |
3118 | { | |
838f9a15 TR |
3119 | struct commit_list *parents; |
3120 | ||
53d00b39 TR |
3121 | if (!revs->saved_parents_slab) |
3122 | return commit->parents; | |
3123 | ||
838f9a15 TR |
3124 | parents = *saved_parents_at(revs->saved_parents_slab, commit); |
3125 | if (parents == EMPTY_PARENT_LIST) | |
3126 | return NULL; | |
3127 | return parents; | |
53d00b39 TR |
3128 | } |
3129 | ||
3130 | void free_saved_parents(struct rev_info *revs) | |
3131 | { | |
3132 | if (revs->saved_parents_slab) | |
3133 | clear_saved_parents(revs->saved_parents_slab); | |
3134 | } |