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Commit | Line | Data |
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26ae337b | 1 | #include "cache.h" |
697cc8ef | 2 | #include "lockfile.h" |
26ae337b | 3 | #include "sequencer.h" |
26ae337b | 4 | #include "dir.h" |
043a4492 RR |
5 | #include "object.h" |
6 | #include "commit.h" | |
7 | #include "tag.h" | |
8 | #include "run-command.h" | |
9 | #include "exec_cmd.h" | |
10 | #include "utf8.h" | |
11 | #include "cache-tree.h" | |
12 | #include "diff.h" | |
13 | #include "revision.h" | |
14 | #include "rerere.h" | |
15 | #include "merge-recursive.h" | |
16 | #include "refs.h" | |
b27cfb0d | 17 | #include "argv-array.h" |
043a4492 RR |
18 | |
19 | #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" | |
26ae337b | 20 | |
5ed75e2a | 21 | const char sign_off_header[] = "Signed-off-by: "; |
cd650a4e | 22 | static const char cherry_picked_prefix[] = "(cherry picked from commit "; |
5ed75e2a | 23 | |
f932729c JK |
24 | static GIT_PATH_FUNC(git_path_todo_file, SEQ_TODO_FILE) |
25 | static GIT_PATH_FUNC(git_path_opts_file, SEQ_OPTS_FILE) | |
26 | static GIT_PATH_FUNC(git_path_seq_dir, SEQ_DIR) | |
27 | static GIT_PATH_FUNC(git_path_head_file, SEQ_HEAD_FILE) | |
28 | ||
b971e04f BC |
29 | static int is_rfc2822_line(const char *buf, int len) |
30 | { | |
31 | int i; | |
32 | ||
33 | for (i = 0; i < len; i++) { | |
34 | int ch = buf[i]; | |
35 | if (ch == ':') | |
36 | return 1; | |
37 | if (!isalnum(ch) && ch != '-') | |
38 | break; | |
39 | } | |
40 | ||
41 | return 0; | |
42 | } | |
43 | ||
44 | static int is_cherry_picked_from_line(const char *buf, int len) | |
45 | { | |
46 | /* | |
47 | * We only care that it looks roughly like (cherry picked from ...) | |
48 | */ | |
49 | return len > strlen(cherry_picked_prefix) + 1 && | |
59556548 | 50 | starts_with(buf, cherry_picked_prefix) && buf[len - 1] == ')'; |
b971e04f BC |
51 | } |
52 | ||
bab4d109 BC |
53 | /* |
54 | * Returns 0 for non-conforming footer | |
55 | * Returns 1 for conforming footer | |
56 | * Returns 2 when sob exists within conforming footer | |
57 | * Returns 3 when sob exists within conforming footer as last entry | |
58 | */ | |
59 | static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, | |
60 | int ignore_footer) | |
b971e04f BC |
61 | { |
62 | char prev; | |
63 | int i, k; | |
64 | int len = sb->len - ignore_footer; | |
65 | const char *buf = sb->buf; | |
bab4d109 | 66 | int found_sob = 0; |
b971e04f BC |
67 | |
68 | /* footer must end with newline */ | |
69 | if (!len || buf[len - 1] != '\n') | |
70 | return 0; | |
71 | ||
72 | prev = '\0'; | |
73 | for (i = len - 1; i > 0; i--) { | |
74 | char ch = buf[i]; | |
75 | if (prev == '\n' && ch == '\n') /* paragraph break */ | |
76 | break; | |
77 | prev = ch; | |
78 | } | |
79 | ||
80 | /* require at least one blank line */ | |
81 | if (prev != '\n' || buf[i] != '\n') | |
82 | return 0; | |
83 | ||
84 | /* advance to start of last paragraph */ | |
85 | while (i < len - 1 && buf[i] == '\n') | |
86 | i++; | |
87 | ||
88 | for (; i < len; i = k) { | |
bab4d109 BC |
89 | int found_rfc2822; |
90 | ||
b971e04f BC |
91 | for (k = i; k < len && buf[k] != '\n'; k++) |
92 | ; /* do nothing */ | |
93 | k++; | |
94 | ||
bab4d109 BC |
95 | found_rfc2822 = is_rfc2822_line(buf + i, k - i - 1); |
96 | if (found_rfc2822 && sob && | |
97 | !strncmp(buf + i, sob->buf, sob->len)) | |
98 | found_sob = k; | |
99 | ||
100 | if (!(found_rfc2822 || | |
101 | is_cherry_picked_from_line(buf + i, k - i - 1))) | |
b971e04f BC |
102 | return 0; |
103 | } | |
bab4d109 BC |
104 | if (found_sob == i) |
105 | return 3; | |
106 | if (found_sob) | |
107 | return 2; | |
b971e04f BC |
108 | return 1; |
109 | } | |
5ed75e2a | 110 | |
250f2492 | 111 | static void remove_sequencer_state(void) |
26ae337b RR |
112 | { |
113 | struct strbuf seq_dir = STRBUF_INIT; | |
26ae337b RR |
114 | |
115 | strbuf_addf(&seq_dir, "%s", git_path(SEQ_DIR)); | |
d596118d | 116 | remove_dir_recursively(&seq_dir, 0); |
26ae337b | 117 | strbuf_release(&seq_dir); |
26ae337b | 118 | } |
043a4492 RR |
119 | |
120 | static const char *action_name(const struct replay_opts *opts) | |
121 | { | |
122 | return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick"; | |
123 | } | |
124 | ||
043a4492 RR |
125 | struct commit_message { |
126 | char *parent_label; | |
7b35eaf8 JK |
127 | char *label; |
128 | char *subject; | |
043a4492 RR |
129 | const char *message; |
130 | }; | |
131 | ||
132 | static int get_message(struct commit *commit, struct commit_message *out) | |
133 | { | |
043a4492 | 134 | const char *abbrev, *subject; |
7b35eaf8 | 135 | int subject_len; |
043a4492 | 136 | |
7b35eaf8 | 137 | out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding()); |
f2fd0760 | 138 | abbrev = find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV); |
043a4492 RR |
139 | |
140 | subject_len = find_commit_subject(out->message, &subject); | |
141 | ||
7b35eaf8 JK |
142 | out->subject = xmemdupz(subject, subject_len); |
143 | out->label = xstrfmt("%s... %s", abbrev, out->subject); | |
144 | out->parent_label = xstrfmt("parent of %s", out->label); | |
145 | ||
043a4492 RR |
146 | return 0; |
147 | } | |
148 | ||
d74a4e57 | 149 | static void free_message(struct commit *commit, struct commit_message *msg) |
043a4492 RR |
150 | { |
151 | free(msg->parent_label); | |
7b35eaf8 JK |
152 | free(msg->label); |
153 | free(msg->subject); | |
b66103c3 | 154 | unuse_commit_buffer(commit, msg->message); |
043a4492 RR |
155 | } |
156 | ||
ed727b19 | 157 | static void print_advice(int show_hint, struct replay_opts *opts) |
043a4492 RR |
158 | { |
159 | char *msg = getenv("GIT_CHERRY_PICK_HELP"); | |
160 | ||
161 | if (msg) { | |
162 | fprintf(stderr, "%s\n", msg); | |
163 | /* | |
41ccfdd9 | 164 | * A conflict has occurred but the porcelain |
043a4492 RR |
165 | * (typically rebase --interactive) wants to take care |
166 | * of the commit itself so remove CHERRY_PICK_HEAD | |
167 | */ | |
f932729c | 168 | unlink(git_path_cherry_pick_head()); |
043a4492 RR |
169 | return; |
170 | } | |
171 | ||
ed727b19 PH |
172 | if (show_hint) { |
173 | if (opts->no_commit) | |
174 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
175 | "with 'git add <paths>' or 'git rm <paths>'")); | |
176 | else | |
177 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
178 | "with 'git add <paths>' or 'git rm <paths>'\n" | |
179 | "and commit the result with 'git commit'")); | |
180 | } | |
043a4492 RR |
181 | } |
182 | ||
183 | static void write_message(struct strbuf *msgbuf, const char *filename) | |
184 | { | |
185 | static struct lock_file msg_file; | |
186 | ||
187 | int msg_fd = hold_lock_file_for_update(&msg_file, filename, | |
188 | LOCK_DIE_ON_ERROR); | |
189 | if (write_in_full(msg_fd, msgbuf->buf, msgbuf->len) < 0) | |
190 | die_errno(_("Could not write to %s"), filename); | |
191 | strbuf_release(msgbuf); | |
192 | if (commit_lock_file(&msg_file) < 0) | |
62d09ef3 | 193 | die(_("Error wrapping up %s."), filename); |
043a4492 RR |
194 | } |
195 | ||
196 | static struct tree *empty_tree(void) | |
197 | { | |
cba595bd | 198 | return lookup_tree(EMPTY_TREE_SHA1_BIN); |
043a4492 RR |
199 | } |
200 | ||
201 | static int error_dirty_index(struct replay_opts *opts) | |
202 | { | |
203 | if (read_cache_unmerged()) | |
204 | return error_resolve_conflict(action_name(opts)); | |
205 | ||
206 | /* Different translation strings for cherry-pick and revert */ | |
207 | if (opts->action == REPLAY_PICK) | |
208 | error(_("Your local changes would be overwritten by cherry-pick.")); | |
209 | else | |
210 | error(_("Your local changes would be overwritten by revert.")); | |
211 | ||
212 | if (advice_commit_before_merge) | |
213 | advise(_("Commit your changes or stash them to proceed.")); | |
214 | return -1; | |
215 | } | |
216 | ||
334ae397 | 217 | static int fast_forward_to(const unsigned char *to, const unsigned char *from, |
eb4be1cb | 218 | int unborn, struct replay_opts *opts) |
043a4492 | 219 | { |
d668d16c | 220 | struct ref_transaction *transaction; |
eb4be1cb | 221 | struct strbuf sb = STRBUF_INIT; |
d668d16c | 222 | struct strbuf err = STRBUF_INIT; |
043a4492 RR |
223 | |
224 | read_cache(); | |
db699a8a | 225 | if (checkout_fast_forward(from, to, 1)) |
43dee070 | 226 | exit(128); /* the callee should have complained already */ |
651ab9f5 | 227 | |
e8d7c390 | 228 | strbuf_addf(&sb, _("%s: fast-forward"), action_name(opts)); |
d668d16c RS |
229 | |
230 | transaction = ref_transaction_begin(&err); | |
231 | if (!transaction || | |
232 | ref_transaction_update(transaction, "HEAD", | |
233 | to, unborn ? null_sha1 : from, | |
1d147bdf | 234 | 0, sb.buf, &err) || |
db7516ab | 235 | ref_transaction_commit(transaction, &err)) { |
d668d16c RS |
236 | ref_transaction_free(transaction); |
237 | error("%s", err.buf); | |
238 | strbuf_release(&sb); | |
239 | strbuf_release(&err); | |
240 | return -1; | |
241 | } | |
651ab9f5 | 242 | |
eb4be1cb | 243 | strbuf_release(&sb); |
d668d16c RS |
244 | strbuf_release(&err); |
245 | ref_transaction_free(transaction); | |
246 | return 0; | |
043a4492 RR |
247 | } |
248 | ||
75c961b7 JH |
249 | void append_conflicts_hint(struct strbuf *msgbuf) |
250 | { | |
251 | int i; | |
252 | ||
261f315b JH |
253 | strbuf_addch(msgbuf, '\n'); |
254 | strbuf_commented_addf(msgbuf, "Conflicts:\n"); | |
75c961b7 JH |
255 | for (i = 0; i < active_nr;) { |
256 | const struct cache_entry *ce = active_cache[i++]; | |
257 | if (ce_stage(ce)) { | |
261f315b | 258 | strbuf_commented_addf(msgbuf, "\t%s\n", ce->name); |
75c961b7 JH |
259 | while (i < active_nr && !strcmp(ce->name, |
260 | active_cache[i]->name)) | |
261 | i++; | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
043a4492 RR |
266 | static int do_recursive_merge(struct commit *base, struct commit *next, |
267 | const char *base_label, const char *next_label, | |
268 | unsigned char *head, struct strbuf *msgbuf, | |
269 | struct replay_opts *opts) | |
270 | { | |
271 | struct merge_options o; | |
272 | struct tree *result, *next_tree, *base_tree, *head_tree; | |
03b86647 | 273 | int clean; |
043a4492 RR |
274 | const char **xopt; |
275 | static struct lock_file index_lock; | |
276 | ||
03b86647 | 277 | hold_locked_index(&index_lock, 1); |
043a4492 RR |
278 | |
279 | read_cache(); | |
280 | ||
281 | init_merge_options(&o); | |
282 | o.ancestor = base ? base_label : "(empty tree)"; | |
283 | o.branch1 = "HEAD"; | |
284 | o.branch2 = next ? next_label : "(empty tree)"; | |
285 | ||
286 | head_tree = parse_tree_indirect(head); | |
287 | next_tree = next ? next->tree : empty_tree(); | |
288 | base_tree = base ? base->tree : empty_tree(); | |
289 | ||
290 | for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++) | |
291 | parse_merge_opt(&o, *xopt); | |
292 | ||
293 | clean = merge_trees(&o, | |
294 | head_tree, | |
295 | next_tree, base_tree, &result); | |
f241ff0d JS |
296 | if (clean < 0) |
297 | return clean; | |
043a4492 RR |
298 | |
299 | if (active_cache_changed && | |
03b86647 | 300 | write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) |
043a4492 RR |
301 | /* TRANSLATORS: %s will be "revert" or "cherry-pick" */ |
302 | die(_("%s: Unable to write new index file"), action_name(opts)); | |
303 | rollback_lock_file(&index_lock); | |
304 | ||
5ed75e2a | 305 | if (opts->signoff) |
bab4d109 | 306 | append_signoff(msgbuf, 0, 0); |
5ed75e2a | 307 | |
75c961b7 JH |
308 | if (!clean) |
309 | append_conflicts_hint(msgbuf); | |
043a4492 RR |
310 | |
311 | return !clean; | |
312 | } | |
313 | ||
b27cfb0d NH |
314 | static int is_index_unchanged(void) |
315 | { | |
316 | unsigned char head_sha1[20]; | |
317 | struct commit *head_commit; | |
318 | ||
7695d118 | 319 | if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL)) |
b27cfb0d NH |
320 | return error(_("Could not resolve HEAD commit\n")); |
321 | ||
322 | head_commit = lookup_commit(head_sha1); | |
4b580061 NH |
323 | |
324 | /* | |
325 | * If head_commit is NULL, check_commit, called from | |
326 | * lookup_commit, would have indicated that head_commit is not | |
327 | * a commit object already. parse_commit() will return failure | |
328 | * without further complaints in such a case. Otherwise, if | |
329 | * the commit is invalid, parse_commit() will complain. So | |
330 | * there is nothing for us to say here. Just return failure. | |
331 | */ | |
332 | if (parse_commit(head_commit)) | |
333 | return -1; | |
b27cfb0d NH |
334 | |
335 | if (!active_cache_tree) | |
336 | active_cache_tree = cache_tree(); | |
337 | ||
338 | if (!cache_tree_fully_valid(active_cache_tree)) | |
d0cfc3e8 | 339 | if (cache_tree_update(&the_index, 0)) |
b27cfb0d NH |
340 | return error(_("Unable to update cache tree\n")); |
341 | ||
ed1c9977 | 342 | return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); |
b27cfb0d NH |
343 | } |
344 | ||
043a4492 RR |
345 | /* |
346 | * If we are cherry-pick, and if the merge did not result in | |
347 | * hand-editing, we will hit this commit and inherit the original | |
348 | * author date and name. | |
349 | * If we are revert, or if our cherry-pick results in a hand merge, | |
350 | * we had better say that the current user is responsible for that. | |
351 | */ | |
ac2b0e8f JH |
352 | static int run_git_commit(const char *defmsg, struct replay_opts *opts, |
353 | int allow_empty) | |
043a4492 | 354 | { |
b27cfb0d NH |
355 | struct argv_array array; |
356 | int rc; | |
17d65f03 | 357 | const char *value; |
b27cfb0d NH |
358 | |
359 | argv_array_init(&array); | |
360 | argv_array_push(&array, "commit"); | |
361 | argv_array_push(&array, "-n"); | |
043a4492 | 362 | |
3bdd5522 JK |
363 | if (opts->gpg_sign) |
364 | argv_array_pushf(&array, "-S%s", opts->gpg_sign); | |
043a4492 | 365 | if (opts->signoff) |
b27cfb0d | 366 | argv_array_push(&array, "-s"); |
043a4492 | 367 | if (!opts->edit) { |
b27cfb0d NH |
368 | argv_array_push(&array, "-F"); |
369 | argv_array_push(&array, defmsg); | |
17d65f03 MG |
370 | if (!opts->signoff && |
371 | !opts->record_origin && | |
372 | git_config_get_value("commit.cleanup", &value)) | |
373 | argv_array_push(&array, "--cleanup=verbatim"); | |
043a4492 | 374 | } |
b27cfb0d | 375 | |
ac2b0e8f | 376 | if (allow_empty) |
b27cfb0d | 377 | argv_array_push(&array, "--allow-empty"); |
df478b74 | 378 | |
4bee9584 CW |
379 | if (opts->allow_empty_message) |
380 | argv_array_push(&array, "--allow-empty-message"); | |
381 | ||
b27cfb0d NH |
382 | rc = run_command_v_opt(array.argv, RUN_GIT_CMD); |
383 | argv_array_clear(&array); | |
384 | return rc; | |
385 | } | |
386 | ||
387 | static int is_original_commit_empty(struct commit *commit) | |
388 | { | |
389 | const unsigned char *ptree_sha1; | |
390 | ||
391 | if (parse_commit(commit)) | |
392 | return error(_("Could not parse commit %s\n"), | |
f2fd0760 | 393 | oid_to_hex(&commit->object.oid)); |
b27cfb0d NH |
394 | if (commit->parents) { |
395 | struct commit *parent = commit->parents->item; | |
396 | if (parse_commit(parent)) | |
397 | return error(_("Could not parse parent commit %s\n"), | |
f2fd0760 | 398 | oid_to_hex(&parent->object.oid)); |
ed1c9977 | 399 | ptree_sha1 = parent->tree->object.oid.hash; |
b27cfb0d NH |
400 | } else { |
401 | ptree_sha1 = EMPTY_TREE_SHA1_BIN; /* commit is root */ | |
043a4492 | 402 | } |
043a4492 | 403 | |
ed1c9977 | 404 | return !hashcmp(ptree_sha1, commit->tree->object.oid.hash); |
043a4492 RR |
405 | } |
406 | ||
ac2b0e8f JH |
407 | /* |
408 | * Do we run "git commit" with "--allow-empty"? | |
409 | */ | |
410 | static int allow_empty(struct replay_opts *opts, struct commit *commit) | |
411 | { | |
412 | int index_unchanged, empty_commit; | |
413 | ||
414 | /* | |
415 | * Three cases: | |
416 | * | |
417 | * (1) we do not allow empty at all and error out. | |
418 | * | |
419 | * (2) we allow ones that were initially empty, but | |
420 | * forbid the ones that become empty; | |
421 | * | |
422 | * (3) we allow both. | |
423 | */ | |
424 | if (!opts->allow_empty) | |
425 | return 0; /* let "git commit" barf as necessary */ | |
426 | ||
427 | index_unchanged = is_index_unchanged(); | |
428 | if (index_unchanged < 0) | |
429 | return index_unchanged; | |
430 | if (!index_unchanged) | |
431 | return 0; /* we do not have to say --allow-empty */ | |
432 | ||
433 | if (opts->keep_redundant_commits) | |
434 | return 1; | |
435 | ||
436 | empty_commit = is_original_commit_empty(commit); | |
437 | if (empty_commit < 0) | |
438 | return empty_commit; | |
439 | if (!empty_commit) | |
440 | return 0; | |
441 | else | |
442 | return 1; | |
443 | } | |
444 | ||
043a4492 RR |
445 | static int do_pick_commit(struct commit *commit, struct replay_opts *opts) |
446 | { | |
447 | unsigned char head[20]; | |
448 | struct commit *base, *next, *parent; | |
449 | const char *base_label, *next_label; | |
d74a4e57 | 450 | struct commit_message msg = { NULL, NULL, NULL, NULL }; |
043a4492 | 451 | struct strbuf msgbuf = STRBUF_INIT; |
c8d1351d | 452 | int res, unborn = 0, allow; |
043a4492 RR |
453 | |
454 | if (opts->no_commit) { | |
455 | /* | |
456 | * We do not intend to commit immediately. We just want to | |
457 | * merge the differences in, so let's compute the tree | |
458 | * that represents the "current" state for merge-recursive | |
459 | * to work on. | |
460 | */ | |
461 | if (write_cache_as_tree(head, 0, NULL)) | |
462 | die (_("Your index file is unmerged.")); | |
463 | } else { | |
334ae397 MZ |
464 | unborn = get_sha1("HEAD", head); |
465 | if (unborn) | |
466 | hashcpy(head, EMPTY_TREE_SHA1_BIN); | |
467 | if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0)) | |
043a4492 RR |
468 | return error_dirty_index(opts); |
469 | } | |
470 | discard_cache(); | |
471 | ||
472 | if (!commit->parents) { | |
473 | parent = NULL; | |
474 | } | |
475 | else if (commit->parents->next) { | |
476 | /* Reverting or cherry-picking a merge commit */ | |
477 | int cnt; | |
478 | struct commit_list *p; | |
479 | ||
480 | if (!opts->mainline) | |
481 | return error(_("Commit %s is a merge but no -m option was given."), | |
f2fd0760 | 482 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
483 | |
484 | for (cnt = 1, p = commit->parents; | |
485 | cnt != opts->mainline && p; | |
486 | cnt++) | |
487 | p = p->next; | |
488 | if (cnt != opts->mainline || !p) | |
489 | return error(_("Commit %s does not have parent %d"), | |
f2fd0760 | 490 | oid_to_hex(&commit->object.oid), opts->mainline); |
043a4492 RR |
491 | parent = p->item; |
492 | } else if (0 < opts->mainline) | |
493 | return error(_("Mainline was specified but commit %s is not a merge."), | |
f2fd0760 | 494 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
495 | else |
496 | parent = commit->parents->item; | |
497 | ||
334ae397 | 498 | if (opts->allow_ff && |
ed1c9977 | 499 | ((parent && !hashcmp(parent->object.oid.hash, head)) || |
334ae397 | 500 | (!parent && unborn))) |
ed1c9977 | 501 | return fast_forward_to(commit->object.oid.hash, head, unborn, opts); |
043a4492 RR |
502 | |
503 | if (parent && parse_commit(parent) < 0) | |
504 | /* TRANSLATORS: The first %s will be "revert" or | |
505 | "cherry-pick", the second %s a SHA1 */ | |
506 | return error(_("%s: cannot parse parent commit %s"), | |
f2fd0760 | 507 | action_name(opts), oid_to_hex(&parent->object.oid)); |
043a4492 RR |
508 | |
509 | if (get_message(commit, &msg) != 0) | |
510 | return error(_("Cannot get commit message for %s"), | |
f2fd0760 | 511 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
512 | |
513 | /* | |
514 | * "commit" is an existing commit. We would want to apply | |
515 | * the difference it introduces since its first parent "prev" | |
516 | * on top of the current HEAD if we are cherry-pick. Or the | |
517 | * reverse of it if we are revert. | |
518 | */ | |
519 | ||
043a4492 RR |
520 | if (opts->action == REPLAY_REVERT) { |
521 | base = commit; | |
522 | base_label = msg.label; | |
523 | next = parent; | |
524 | next_label = msg.parent_label; | |
525 | strbuf_addstr(&msgbuf, "Revert \""); | |
526 | strbuf_addstr(&msgbuf, msg.subject); | |
527 | strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit "); | |
f2fd0760 | 528 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
529 | |
530 | if (commit->parents && commit->parents->next) { | |
531 | strbuf_addstr(&msgbuf, ", reversing\nchanges made to "); | |
f2fd0760 | 532 | strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid)); |
043a4492 RR |
533 | } |
534 | strbuf_addstr(&msgbuf, ".\n"); | |
535 | } else { | |
536 | const char *p; | |
537 | ||
538 | base = parent; | |
539 | base_label = msg.parent_label; | |
540 | next = commit; | |
541 | next_label = msg.label; | |
542 | ||
543 | /* | |
544 | * Append the commit log message to msgbuf; it starts | |
545 | * after the tree, parent, author, committer | |
546 | * information followed by "\n\n". | |
547 | */ | |
548 | p = strstr(msg.message, "\n\n"); | |
88ef402f JS |
549 | if (p) |
550 | strbuf_addstr(&msgbuf, skip_blank_lines(p + 2)); | |
043a4492 RR |
551 | |
552 | if (opts->record_origin) { | |
bab4d109 | 553 | if (!has_conforming_footer(&msgbuf, NULL, 0)) |
b971e04f | 554 | strbuf_addch(&msgbuf, '\n'); |
cd650a4e | 555 | strbuf_addstr(&msgbuf, cherry_picked_prefix); |
f2fd0760 | 556 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
557 | strbuf_addstr(&msgbuf, ")\n"); |
558 | } | |
559 | } | |
560 | ||
561 | if (!opts->strategy || !strcmp(opts->strategy, "recursive") || opts->action == REPLAY_REVERT) { | |
562 | res = do_recursive_merge(base, next, base_label, next_label, | |
563 | head, &msgbuf, opts); | |
f241ff0d JS |
564 | if (res < 0) |
565 | return res; | |
f932729c | 566 | write_message(&msgbuf, git_path_merge_msg()); |
043a4492 RR |
567 | } else { |
568 | struct commit_list *common = NULL; | |
569 | struct commit_list *remotes = NULL; | |
570 | ||
f932729c | 571 | write_message(&msgbuf, git_path_merge_msg()); |
043a4492 RR |
572 | |
573 | commit_list_insert(base, &common); | |
574 | commit_list_insert(next, &remotes); | |
575 | res = try_merge_command(opts->strategy, opts->xopts_nr, opts->xopts, | |
576 | common, sha1_to_hex(head), remotes); | |
577 | free_commit_list(common); | |
578 | free_commit_list(remotes); | |
579 | } | |
580 | ||
581 | /* | |
582 | * If the merge was clean or if it failed due to conflict, we write | |
583 | * CHERRY_PICK_HEAD for the subsequent invocation of commit to use. | |
584 | * However, if the merge did not even start, then we don't want to | |
585 | * write it at all. | |
586 | */ | |
587 | if (opts->action == REPLAY_PICK && !opts->no_commit && (res == 0 || res == 1)) | |
ed1c9977 | 588 | update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, |
d96a5399 | 589 | REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); |
043a4492 | 590 | if (opts->action == REPLAY_REVERT && ((opts->no_commit && res == 0) || res == 1)) |
ed1c9977 | 591 | update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, |
d96a5399 | 592 | REF_NODEREF, UPDATE_REFS_DIE_ON_ERR); |
043a4492 RR |
593 | |
594 | if (res) { | |
595 | error(opts->action == REPLAY_REVERT | |
596 | ? _("could not revert %s... %s") | |
597 | : _("could not apply %s... %s"), | |
ed1c9977 | 598 | find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV), |
043a4492 | 599 | msg.subject); |
ed727b19 | 600 | print_advice(res == 1, opts); |
043a4492 | 601 | rerere(opts->allow_rerere_auto); |
c8d1351d | 602 | goto leave; |
043a4492 RR |
603 | } |
604 | ||
c8d1351d | 605 | allow = allow_empty(opts, commit); |
706728a3 FC |
606 | if (allow < 0) { |
607 | res = allow; | |
608 | goto leave; | |
609 | } | |
c8d1351d | 610 | if (!opts->no_commit) |
f932729c | 611 | res = run_git_commit(git_path_merge_msg(), opts, allow); |
c8d1351d FC |
612 | |
613 | leave: | |
d74a4e57 | 614 | free_message(commit, &msg); |
043a4492 RR |
615 | |
616 | return res; | |
617 | } | |
618 | ||
619 | static void prepare_revs(struct replay_opts *opts) | |
620 | { | |
a73e22e9 MZ |
621 | /* |
622 | * picking (but not reverting) ranges (but not individual revisions) | |
623 | * should be done in reverse | |
624 | */ | |
625 | if (opts->action == REPLAY_PICK && !opts->revs->no_walk) | |
043a4492 RR |
626 | opts->revs->reverse ^= 1; |
627 | ||
628 | if (prepare_revision_walk(opts->revs)) | |
629 | die(_("revision walk setup failed")); | |
630 | ||
631 | if (!opts->revs->commits) | |
632 | die(_("empty commit set passed")); | |
633 | } | |
634 | ||
635 | static void read_and_refresh_cache(struct replay_opts *opts) | |
636 | { | |
637 | static struct lock_file index_lock; | |
638 | int index_fd = hold_locked_index(&index_lock, 0); | |
639 | if (read_index_preload(&the_index, NULL) < 0) | |
640 | die(_("git %s: failed to read the index"), action_name(opts)); | |
641 | refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); | |
33c297aa | 642 | if (the_index.cache_changed && index_fd >= 0) { |
03b86647 | 643 | if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) |
043a4492 RR |
644 | die(_("git %s: failed to refresh the index"), action_name(opts)); |
645 | } | |
646 | rollback_lock_file(&index_lock); | |
647 | } | |
648 | ||
043a4492 RR |
649 | static int format_todo(struct strbuf *buf, struct commit_list *todo_list, |
650 | struct replay_opts *opts) | |
651 | { | |
652 | struct commit_list *cur = NULL; | |
653 | const char *sha1_abbrev = NULL; | |
654 | const char *action_str = opts->action == REPLAY_REVERT ? "revert" : "pick"; | |
655 | const char *subject; | |
656 | int subject_len; | |
657 | ||
658 | for (cur = todo_list; cur; cur = cur->next) { | |
8597ea3a | 659 | const char *commit_buffer = get_commit_buffer(cur->item, NULL); |
ed1c9977 | 660 | sha1_abbrev = find_unique_abbrev(cur->item->object.oid.hash, DEFAULT_ABBREV); |
bc6b8fc1 | 661 | subject_len = find_commit_subject(commit_buffer, &subject); |
043a4492 RR |
662 | strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev, |
663 | subject_len, subject); | |
bc6b8fc1 | 664 | unuse_commit_buffer(cur->item, commit_buffer); |
043a4492 RR |
665 | } |
666 | return 0; | |
667 | } | |
668 | ||
669 | static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts) | |
670 | { | |
671 | unsigned char commit_sha1[20]; | |
672 | enum replay_action action; | |
673 | char *end_of_object_name; | |
674 | int saved, status, padding; | |
675 | ||
59556548 | 676 | if (starts_with(bol, "pick")) { |
043a4492 RR |
677 | action = REPLAY_PICK; |
678 | bol += strlen("pick"); | |
59556548 | 679 | } else if (starts_with(bol, "revert")) { |
043a4492 RR |
680 | action = REPLAY_REVERT; |
681 | bol += strlen("revert"); | |
682 | } else | |
683 | return NULL; | |
684 | ||
685 | /* Eat up extra spaces/ tabs before object name */ | |
686 | padding = strspn(bol, " \t"); | |
687 | if (!padding) | |
688 | return NULL; | |
689 | bol += padding; | |
690 | ||
691 | end_of_object_name = bol + strcspn(bol, " \t\n"); | |
692 | saved = *end_of_object_name; | |
693 | *end_of_object_name = '\0'; | |
694 | status = get_sha1(bol, commit_sha1); | |
695 | *end_of_object_name = saved; | |
696 | ||
697 | /* | |
698 | * Verify that the action matches up with the one in | |
699 | * opts; we don't support arbitrary instructions | |
700 | */ | |
701 | if (action != opts->action) { | |
9b0df093 VA |
702 | if (action == REPLAY_REVERT) |
703 | error((opts->action == REPLAY_REVERT) | |
704 | ? _("Cannot revert during a another revert.") | |
705 | : _("Cannot revert during a cherry-pick.")); | |
706 | else | |
707 | error((opts->action == REPLAY_REVERT) | |
708 | ? _("Cannot cherry-pick during a revert.") | |
709 | : _("Cannot cherry-pick during another cherry-pick.")); | |
043a4492 RR |
710 | return NULL; |
711 | } | |
712 | ||
713 | if (status < 0) | |
714 | return NULL; | |
715 | ||
716 | return lookup_commit_reference(commit_sha1); | |
717 | } | |
718 | ||
719 | static int parse_insn_buffer(char *buf, struct commit_list **todo_list, | |
720 | struct replay_opts *opts) | |
721 | { | |
722 | struct commit_list **next = todo_list; | |
723 | struct commit *commit; | |
724 | char *p = buf; | |
725 | int i; | |
726 | ||
727 | for (i = 1; *p; i++) { | |
728 | char *eol = strchrnul(p, '\n'); | |
729 | commit = parse_insn_line(p, eol, opts); | |
730 | if (!commit) | |
731 | return error(_("Could not parse line %d."), i); | |
732 | next = commit_list_append(commit, next); | |
733 | p = *eol ? eol + 1 : eol; | |
734 | } | |
735 | if (!*todo_list) | |
736 | return error(_("No commits parsed.")); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | static void read_populate_todo(struct commit_list **todo_list, | |
741 | struct replay_opts *opts) | |
742 | { | |
043a4492 RR |
743 | struct strbuf buf = STRBUF_INIT; |
744 | int fd, res; | |
745 | ||
f932729c | 746 | fd = open(git_path_todo_file(), O_RDONLY); |
043a4492 | 747 | if (fd < 0) |
f932729c | 748 | die_errno(_("Could not open %s"), git_path_todo_file()); |
043a4492 RR |
749 | if (strbuf_read(&buf, fd, 0) < 0) { |
750 | close(fd); | |
751 | strbuf_release(&buf); | |
f932729c | 752 | die(_("Could not read %s."), git_path_todo_file()); |
043a4492 RR |
753 | } |
754 | close(fd); | |
755 | ||
756 | res = parse_insn_buffer(buf.buf, todo_list, opts); | |
757 | strbuf_release(&buf); | |
758 | if (res) | |
f932729c | 759 | die(_("Unusable instruction sheet: %s"), git_path_todo_file()); |
043a4492 RR |
760 | } |
761 | ||
762 | static int populate_opts_cb(const char *key, const char *value, void *data) | |
763 | { | |
764 | struct replay_opts *opts = data; | |
765 | int error_flag = 1; | |
766 | ||
767 | if (!value) | |
768 | error_flag = 0; | |
769 | else if (!strcmp(key, "options.no-commit")) | |
770 | opts->no_commit = git_config_bool_or_int(key, value, &error_flag); | |
771 | else if (!strcmp(key, "options.edit")) | |
772 | opts->edit = git_config_bool_or_int(key, value, &error_flag); | |
773 | else if (!strcmp(key, "options.signoff")) | |
774 | opts->signoff = git_config_bool_or_int(key, value, &error_flag); | |
775 | else if (!strcmp(key, "options.record-origin")) | |
776 | opts->record_origin = git_config_bool_or_int(key, value, &error_flag); | |
777 | else if (!strcmp(key, "options.allow-ff")) | |
778 | opts->allow_ff = git_config_bool_or_int(key, value, &error_flag); | |
779 | else if (!strcmp(key, "options.mainline")) | |
780 | opts->mainline = git_config_int(key, value); | |
781 | else if (!strcmp(key, "options.strategy")) | |
782 | git_config_string(&opts->strategy, key, value); | |
3253553e NV |
783 | else if (!strcmp(key, "options.gpg-sign")) |
784 | git_config_string(&opts->gpg_sign, key, value); | |
043a4492 RR |
785 | else if (!strcmp(key, "options.strategy-option")) { |
786 | ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc); | |
787 | opts->xopts[opts->xopts_nr++] = xstrdup(value); | |
788 | } else | |
789 | return error(_("Invalid key: %s"), key); | |
790 | ||
791 | if (!error_flag) | |
792 | return error(_("Invalid value for %s: %s"), key, value); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | static void read_populate_opts(struct replay_opts **opts_ptr) | |
798 | { | |
f932729c | 799 | if (!file_exists(git_path_opts_file())) |
043a4492 | 800 | return; |
f932729c JK |
801 | if (git_config_from_file(populate_opts_cb, git_path_opts_file(), *opts_ptr) < 0) |
802 | die(_("Malformed options sheet: %s"), git_path_opts_file()); | |
043a4492 RR |
803 | } |
804 | ||
805 | static void walk_revs_populate_todo(struct commit_list **todo_list, | |
806 | struct replay_opts *opts) | |
807 | { | |
808 | struct commit *commit; | |
809 | struct commit_list **next; | |
810 | ||
811 | prepare_revs(opts); | |
812 | ||
813 | next = todo_list; | |
814 | while ((commit = get_revision(opts->revs))) | |
815 | next = commit_list_append(commit, next); | |
816 | } | |
817 | ||
818 | static int create_seq_dir(void) | |
819 | { | |
f932729c | 820 | if (file_exists(git_path_seq_dir())) { |
043a4492 RR |
821 | error(_("a cherry-pick or revert is already in progress")); |
822 | advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); | |
823 | return -1; | |
824 | } | |
f932729c JK |
825 | else if (mkdir(git_path_seq_dir(), 0777) < 0) |
826 | die_errno(_("Could not create sequencer directory %s"), | |
827 | git_path_seq_dir()); | |
043a4492 RR |
828 | return 0; |
829 | } | |
830 | ||
831 | static void save_head(const char *head) | |
832 | { | |
043a4492 RR |
833 | static struct lock_file head_lock; |
834 | struct strbuf buf = STRBUF_INIT; | |
835 | int fd; | |
836 | ||
f932729c | 837 | fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), LOCK_DIE_ON_ERROR); |
043a4492 RR |
838 | strbuf_addf(&buf, "%s\n", head); |
839 | if (write_in_full(fd, buf.buf, buf.len) < 0) | |
f932729c | 840 | die_errno(_("Could not write to %s"), git_path_head_file()); |
043a4492 | 841 | if (commit_lock_file(&head_lock) < 0) |
f932729c | 842 | die(_("Error wrapping up %s."), git_path_head_file()); |
043a4492 RR |
843 | } |
844 | ||
845 | static int reset_for_rollback(const unsigned char *sha1) | |
846 | { | |
847 | const char *argv[4]; /* reset --merge <arg> + NULL */ | |
848 | argv[0] = "reset"; | |
849 | argv[1] = "--merge"; | |
850 | argv[2] = sha1_to_hex(sha1); | |
851 | argv[3] = NULL; | |
852 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
853 | } | |
854 | ||
855 | static int rollback_single_pick(void) | |
856 | { | |
857 | unsigned char head_sha1[20]; | |
858 | ||
f932729c JK |
859 | if (!file_exists(git_path_cherry_pick_head()) && |
860 | !file_exists(git_path_revert_head())) | |
043a4492 | 861 | return error(_("no cherry-pick or revert in progress")); |
7695d118 | 862 | if (read_ref_full("HEAD", 0, head_sha1, NULL)) |
043a4492 RR |
863 | return error(_("cannot resolve HEAD")); |
864 | if (is_null_sha1(head_sha1)) | |
865 | return error(_("cannot abort from a branch yet to be born")); | |
866 | return reset_for_rollback(head_sha1); | |
867 | } | |
868 | ||
869 | static int sequencer_rollback(struct replay_opts *opts) | |
870 | { | |
043a4492 RR |
871 | FILE *f; |
872 | unsigned char sha1[20]; | |
873 | struct strbuf buf = STRBUF_INIT; | |
874 | ||
f932729c | 875 | f = fopen(git_path_head_file(), "r"); |
043a4492 RR |
876 | if (!f && errno == ENOENT) { |
877 | /* | |
878 | * There is no multiple-cherry-pick in progress. | |
879 | * If CHERRY_PICK_HEAD or REVERT_HEAD indicates | |
880 | * a single-cherry-pick in progress, abort that. | |
881 | */ | |
882 | return rollback_single_pick(); | |
883 | } | |
884 | if (!f) | |
6c979c74 | 885 | return error_errno(_("cannot open %s"), git_path_head_file()); |
8f309aeb | 886 | if (strbuf_getline_lf(&buf, f)) { |
f932729c JK |
887 | error(_("cannot read %s: %s"), git_path_head_file(), |
888 | ferror(f) ? strerror(errno) : _("unexpected end of file")); | |
043a4492 RR |
889 | fclose(f); |
890 | goto fail; | |
891 | } | |
892 | fclose(f); | |
893 | if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') { | |
894 | error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"), | |
f932729c | 895 | git_path_head_file()); |
043a4492 RR |
896 | goto fail; |
897 | } | |
0f974e21 MG |
898 | if (is_null_sha1(sha1)) { |
899 | error(_("cannot abort from a branch yet to be born")); | |
900 | goto fail; | |
901 | } | |
043a4492 RR |
902 | if (reset_for_rollback(sha1)) |
903 | goto fail; | |
904 | remove_sequencer_state(); | |
905 | strbuf_release(&buf); | |
906 | return 0; | |
907 | fail: | |
908 | strbuf_release(&buf); | |
909 | return -1; | |
910 | } | |
911 | ||
912 | static void save_todo(struct commit_list *todo_list, struct replay_opts *opts) | |
913 | { | |
043a4492 RR |
914 | static struct lock_file todo_lock; |
915 | struct strbuf buf = STRBUF_INIT; | |
916 | int fd; | |
917 | ||
f932729c | 918 | fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), LOCK_DIE_ON_ERROR); |
043a4492 | 919 | if (format_todo(&buf, todo_list, opts) < 0) |
f932729c | 920 | die(_("Could not format %s."), git_path_todo_file()); |
043a4492 RR |
921 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
922 | strbuf_release(&buf); | |
f932729c | 923 | die_errno(_("Could not write to %s"), git_path_todo_file()); |
043a4492 RR |
924 | } |
925 | if (commit_lock_file(&todo_lock) < 0) { | |
926 | strbuf_release(&buf); | |
f932729c | 927 | die(_("Error wrapping up %s."), git_path_todo_file()); |
043a4492 RR |
928 | } |
929 | strbuf_release(&buf); | |
930 | } | |
931 | ||
932 | static void save_opts(struct replay_opts *opts) | |
933 | { | |
f932729c | 934 | const char *opts_file = git_path_opts_file(); |
043a4492 RR |
935 | |
936 | if (opts->no_commit) | |
937 | git_config_set_in_file(opts_file, "options.no-commit", "true"); | |
938 | if (opts->edit) | |
939 | git_config_set_in_file(opts_file, "options.edit", "true"); | |
940 | if (opts->signoff) | |
941 | git_config_set_in_file(opts_file, "options.signoff", "true"); | |
942 | if (opts->record_origin) | |
943 | git_config_set_in_file(opts_file, "options.record-origin", "true"); | |
944 | if (opts->allow_ff) | |
945 | git_config_set_in_file(opts_file, "options.allow-ff", "true"); | |
946 | if (opts->mainline) { | |
947 | struct strbuf buf = STRBUF_INIT; | |
948 | strbuf_addf(&buf, "%d", opts->mainline); | |
949 | git_config_set_in_file(opts_file, "options.mainline", buf.buf); | |
950 | strbuf_release(&buf); | |
951 | } | |
952 | if (opts->strategy) | |
953 | git_config_set_in_file(opts_file, "options.strategy", opts->strategy); | |
3253553e NV |
954 | if (opts->gpg_sign) |
955 | git_config_set_in_file(opts_file, "options.gpg-sign", opts->gpg_sign); | |
043a4492 RR |
956 | if (opts->xopts) { |
957 | int i; | |
958 | for (i = 0; i < opts->xopts_nr; i++) | |
959 | git_config_set_multivar_in_file(opts_file, | |
960 | "options.strategy-option", | |
961 | opts->xopts[i], "^$", 0); | |
962 | } | |
963 | } | |
964 | ||
965 | static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) | |
966 | { | |
967 | struct commit_list *cur; | |
968 | int res; | |
969 | ||
970 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
971 | if (opts->allow_ff) | |
972 | assert(!(opts->signoff || opts->no_commit || | |
973 | opts->record_origin || opts->edit)); | |
974 | read_and_refresh_cache(opts); | |
975 | ||
976 | for (cur = todo_list; cur; cur = cur->next) { | |
977 | save_todo(cur, opts); | |
978 | res = do_pick_commit(cur->item, opts); | |
979 | if (res) | |
980 | return res; | |
981 | } | |
982 | ||
983 | /* | |
984 | * Sequence of picks finished successfully; cleanup by | |
985 | * removing the .git/sequencer directory | |
986 | */ | |
987 | remove_sequencer_state(); | |
988 | return 0; | |
989 | } | |
990 | ||
991 | static int continue_single_pick(void) | |
992 | { | |
993 | const char *argv[] = { "commit", NULL }; | |
994 | ||
f932729c JK |
995 | if (!file_exists(git_path_cherry_pick_head()) && |
996 | !file_exists(git_path_revert_head())) | |
043a4492 RR |
997 | return error(_("no cherry-pick or revert in progress")); |
998 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
999 | } | |
1000 | ||
1001 | static int sequencer_continue(struct replay_opts *opts) | |
1002 | { | |
1003 | struct commit_list *todo_list = NULL; | |
1004 | ||
f932729c | 1005 | if (!file_exists(git_path_todo_file())) |
043a4492 RR |
1006 | return continue_single_pick(); |
1007 | read_populate_opts(&opts); | |
1008 | read_populate_todo(&todo_list, opts); | |
1009 | ||
1010 | /* Verify that the conflict has been resolved */ | |
f932729c JK |
1011 | if (file_exists(git_path_cherry_pick_head()) || |
1012 | file_exists(git_path_revert_head())) { | |
043a4492 RR |
1013 | int ret = continue_single_pick(); |
1014 | if (ret) | |
1015 | return ret; | |
1016 | } | |
1017 | if (index_differs_from("HEAD", 0)) | |
1018 | return error_dirty_index(opts); | |
1019 | todo_list = todo_list->next; | |
1020 | return pick_commits(todo_list, opts); | |
1021 | } | |
1022 | ||
1023 | static int single_pick(struct commit *cmit, struct replay_opts *opts) | |
1024 | { | |
1025 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
1026 | return do_pick_commit(cmit, opts); | |
1027 | } | |
1028 | ||
1029 | int sequencer_pick_revisions(struct replay_opts *opts) | |
1030 | { | |
1031 | struct commit_list *todo_list = NULL; | |
1032 | unsigned char sha1[20]; | |
21246dbb | 1033 | int i; |
043a4492 RR |
1034 | |
1035 | if (opts->subcommand == REPLAY_NONE) | |
1036 | assert(opts->revs); | |
1037 | ||
1038 | read_and_refresh_cache(opts); | |
1039 | ||
1040 | /* | |
1041 | * Decide what to do depending on the arguments; a fresh | |
1042 | * cherry-pick should be handled differently from an existing | |
1043 | * one that is being continued | |
1044 | */ | |
1045 | if (opts->subcommand == REPLAY_REMOVE_STATE) { | |
1046 | remove_sequencer_state(); | |
1047 | return 0; | |
1048 | } | |
1049 | if (opts->subcommand == REPLAY_ROLLBACK) | |
1050 | return sequencer_rollback(opts); | |
1051 | if (opts->subcommand == REPLAY_CONTINUE) | |
1052 | return sequencer_continue(opts); | |
1053 | ||
21246dbb MV |
1054 | for (i = 0; i < opts->revs->pending.nr; i++) { |
1055 | unsigned char sha1[20]; | |
1056 | const char *name = opts->revs->pending.objects[i].name; | |
1057 | ||
1058 | /* This happens when using --stdin. */ | |
1059 | if (!strlen(name)) | |
1060 | continue; | |
1061 | ||
1062 | if (!get_sha1(name, sha1)) { | |
7c0b0d8d JH |
1063 | if (!lookup_commit_reference_gently(sha1, 1)) { |
1064 | enum object_type type = sha1_object_info(sha1, NULL); | |
21246dbb | 1065 | die(_("%s: can't cherry-pick a %s"), name, typename(type)); |
7c0b0d8d | 1066 | } |
21246dbb MV |
1067 | } else |
1068 | die(_("%s: bad revision"), name); | |
1069 | } | |
1070 | ||
043a4492 RR |
1071 | /* |
1072 | * If we were called as "git cherry-pick <commit>", just | |
1073 | * cherry-pick/revert it, set CHERRY_PICK_HEAD / | |
1074 | * REVERT_HEAD, and don't touch the sequencer state. | |
1075 | * This means it is possible to cherry-pick in the middle | |
1076 | * of a cherry-pick sequence. | |
1077 | */ | |
1078 | if (opts->revs->cmdline.nr == 1 && | |
1079 | opts->revs->cmdline.rev->whence == REV_CMD_REV && | |
1080 | opts->revs->no_walk && | |
1081 | !opts->revs->cmdline.rev->flags) { | |
1082 | struct commit *cmit; | |
1083 | if (prepare_revision_walk(opts->revs)) | |
1084 | die(_("revision walk setup failed")); | |
1085 | cmit = get_revision(opts->revs); | |
1086 | if (!cmit || get_revision(opts->revs)) | |
1087 | die("BUG: expected exactly one commit from walk"); | |
1088 | return single_pick(cmit, opts); | |
1089 | } | |
1090 | ||
1091 | /* | |
1092 | * Start a new cherry-pick/ revert sequence; but | |
1093 | * first, make sure that an existing one isn't in | |
1094 | * progress | |
1095 | */ | |
1096 | ||
1097 | walk_revs_populate_todo(&todo_list, opts); | |
1098 | if (create_seq_dir() < 0) | |
1099 | return -1; | |
0f974e21 MG |
1100 | if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT)) |
1101 | return error(_("Can't revert as initial commit")); | |
043a4492 RR |
1102 | save_head(sha1_to_hex(sha1)); |
1103 | save_opts(opts); | |
1104 | return pick_commits(todo_list, opts); | |
1105 | } | |
5ed75e2a | 1106 | |
bab4d109 | 1107 | void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag) |
5ed75e2a | 1108 | { |
bab4d109 | 1109 | unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP; |
5ed75e2a | 1110 | struct strbuf sob = STRBUF_INIT; |
bab4d109 | 1111 | int has_footer; |
5ed75e2a MV |
1112 | |
1113 | strbuf_addstr(&sob, sign_off_header); | |
1114 | strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"), | |
1115 | getenv("GIT_COMMITTER_EMAIL"))); | |
1116 | strbuf_addch(&sob, '\n'); | |
bab4d109 BC |
1117 | |
1118 | /* | |
1119 | * If the whole message buffer is equal to the sob, pretend that we | |
1120 | * found a conforming footer with a matching sob | |
1121 | */ | |
1122 | if (msgbuf->len - ignore_footer == sob.len && | |
1123 | !strncmp(msgbuf->buf, sob.buf, sob.len)) | |
1124 | has_footer = 3; | |
1125 | else | |
1126 | has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer); | |
1127 | ||
33f2f9ab BC |
1128 | if (!has_footer) { |
1129 | const char *append_newlines = NULL; | |
1130 | size_t len = msgbuf->len - ignore_footer; | |
1131 | ||
8c613fd5 BC |
1132 | if (!len) { |
1133 | /* | |
1134 | * The buffer is completely empty. Leave foom for | |
1135 | * the title and body to be filled in by the user. | |
1136 | */ | |
33f2f9ab | 1137 | append_newlines = "\n\n"; |
8c613fd5 BC |
1138 | } else if (msgbuf->buf[len - 1] != '\n') { |
1139 | /* | |
1140 | * Incomplete line. Complete the line and add a | |
1141 | * blank one so that there is an empty line between | |
1142 | * the message body and the sob. | |
1143 | */ | |
1144 | append_newlines = "\n\n"; | |
1145 | } else if (len == 1) { | |
1146 | /* | |
1147 | * Buffer contains a single newline. Add another | |
1148 | * so that we leave room for the title and body. | |
1149 | */ | |
1150 | append_newlines = "\n"; | |
1151 | } else if (msgbuf->buf[len - 2] != '\n') { | |
1152 | /* | |
1153 | * Buffer ends with a single newline. Add another | |
1154 | * so that there is an empty line between the message | |
1155 | * body and the sob. | |
1156 | */ | |
33f2f9ab | 1157 | append_newlines = "\n"; |
8c613fd5 | 1158 | } /* else, the buffer already ends with two newlines. */ |
33f2f9ab BC |
1159 | |
1160 | if (append_newlines) | |
1161 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
1162 | append_newlines, strlen(append_newlines)); | |
5ed75e2a | 1163 | } |
bab4d109 BC |
1164 | |
1165 | if (has_footer != 3 && (!no_dup_sob || has_footer != 2)) | |
1166 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
1167 | sob.buf, sob.len); | |
1168 | ||
5ed75e2a MV |
1169 | strbuf_release(&sob); |
1170 | } |