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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" |
a1c75762 | 18 | #include "quote.h" |
967dfd4d | 19 | #include "trailer.h" |
56dc3ab0 | 20 | #include "log-tree.h" |
043a4492 RR |
21 | |
22 | #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" | |
26ae337b | 23 | |
5ed75e2a | 24 | const char sign_off_header[] = "Signed-off-by: "; |
cd650a4e | 25 | static const char cherry_picked_prefix[] = "(cherry picked from commit "; |
5ed75e2a | 26 | |
8a2a0f53 JS |
27 | GIT_PATH_FUNC(git_path_seq_dir, "sequencer") |
28 | ||
29 | static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") | |
30 | static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") | |
31 | static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") | |
1e41229d | 32 | static GIT_PATH_FUNC(git_path_abort_safety_file, "sequencer/abort-safety") |
f932729c | 33 | |
84583957 JS |
34 | static GIT_PATH_FUNC(rebase_path, "rebase-merge") |
35 | /* | |
36 | * The file containing rebase commands, comments, and empty lines. | |
37 | * This file is created by "git rebase -i" then edited by the user. As | |
38 | * the lines are processed, they are removed from the front of this | |
39 | * file and written to the tail of 'done'. | |
40 | */ | |
41 | static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") | |
b5a67045 JS |
42 | /* |
43 | * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and | |
44 | * GIT_AUTHOR_DATE that will be used for the commit that is currently | |
45 | * being rebased. | |
46 | */ | |
47 | static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") | |
56dc3ab0 JS |
48 | /* |
49 | * When an "edit" rebase command is being processed, the SHA1 of the | |
50 | * commit to be edited is recorded in this file. When "git rebase | |
51 | * --continue" is executed, if there are any staged changes then they | |
52 | * will be amended to the HEAD commit, but only provided the HEAD | |
53 | * commit is still the commit to be edited. When any other rebase | |
54 | * command is processed, this file is deleted. | |
55 | */ | |
56 | static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") | |
57 | /* | |
58 | * When we stop at a given patch via the "edit" command, this file contains | |
59 | * the abbreviated commit name of the corresponding patch. | |
60 | */ | |
61 | static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") | |
a1c75762 JS |
62 | /* |
63 | * The following files are written by git-rebase just after parsing the | |
64 | * command-line (and are only consumed, not modified, by the sequencer). | |
65 | */ | |
66 | static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") | |
b5a67045 | 67 | |
b5a67045 JS |
68 | static inline int is_rebase_i(const struct replay_opts *opts) |
69 | { | |
84583957 | 70 | return opts->action == REPLAY_INTERACTIVE_REBASE; |
b5a67045 JS |
71 | } |
72 | ||
285abf56 JS |
73 | static const char *get_dir(const struct replay_opts *opts) |
74 | { | |
84583957 JS |
75 | if (is_rebase_i(opts)) |
76 | return rebase_path(); | |
285abf56 JS |
77 | return git_path_seq_dir(); |
78 | } | |
79 | ||
c0246501 JS |
80 | static const char *get_todo_path(const struct replay_opts *opts) |
81 | { | |
84583957 JS |
82 | if (is_rebase_i(opts)) |
83 | return rebase_path_todo(); | |
c0246501 JS |
84 | return git_path_todo_file(); |
85 | } | |
86 | ||
bab4d109 BC |
87 | /* |
88 | * Returns 0 for non-conforming footer | |
89 | * Returns 1 for conforming footer | |
90 | * Returns 2 when sob exists within conforming footer | |
91 | * Returns 3 when sob exists within conforming footer as last entry | |
92 | */ | |
93 | static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, | |
94 | int ignore_footer) | |
b971e04f | 95 | { |
967dfd4d JT |
96 | struct trailer_info info; |
97 | int i; | |
98 | int found_sob = 0, found_sob_last = 0; | |
b971e04f | 99 | |
967dfd4d | 100 | trailer_info_get(&info, sb->buf); |
b971e04f | 101 | |
967dfd4d | 102 | if (info.trailer_start == info.trailer_end) |
b971e04f BC |
103 | return 0; |
104 | ||
967dfd4d JT |
105 | for (i = 0; i < info.trailer_nr; i++) |
106 | if (sob && !strncmp(info.trailers[i], sob->buf, sob->len)) { | |
107 | found_sob = 1; | |
108 | if (i == info.trailer_nr - 1) | |
109 | found_sob_last = 1; | |
110 | } | |
b971e04f | 111 | |
967dfd4d | 112 | trailer_info_release(&info); |
bab4d109 | 113 | |
967dfd4d | 114 | if (found_sob_last) |
bab4d109 BC |
115 | return 3; |
116 | if (found_sob) | |
117 | return 2; | |
b971e04f BC |
118 | return 1; |
119 | } | |
5ed75e2a | 120 | |
a1c75762 JS |
121 | static const char *gpg_sign_opt_quoted(struct replay_opts *opts) |
122 | { | |
123 | static struct strbuf buf = STRBUF_INIT; | |
124 | ||
125 | strbuf_reset(&buf); | |
126 | if (opts->gpg_sign) | |
127 | sq_quotef(&buf, "-S%s", opts->gpg_sign); | |
128 | return buf.buf; | |
129 | } | |
130 | ||
2863584f | 131 | int sequencer_remove_state(struct replay_opts *opts) |
26ae337b | 132 | { |
285abf56 | 133 | struct strbuf dir = STRBUF_INIT; |
03a4e260 JS |
134 | int i; |
135 | ||
136 | free(opts->gpg_sign); | |
137 | free(opts->strategy); | |
138 | for (i = 0; i < opts->xopts_nr; i++) | |
139 | free(opts->xopts[i]); | |
140 | free(opts->xopts); | |
26ae337b | 141 | |
285abf56 JS |
142 | strbuf_addf(&dir, "%s", get_dir(opts)); |
143 | remove_dir_recursively(&dir, 0); | |
144 | strbuf_release(&dir); | |
2863584f JS |
145 | |
146 | return 0; | |
26ae337b | 147 | } |
043a4492 RR |
148 | |
149 | static const char *action_name(const struct replay_opts *opts) | |
150 | { | |
84583957 JS |
151 | switch (opts->action) { |
152 | case REPLAY_REVERT: | |
153 | return N_("revert"); | |
154 | case REPLAY_PICK: | |
155 | return N_("cherry-pick"); | |
156 | case REPLAY_INTERACTIVE_REBASE: | |
157 | return N_("rebase -i"); | |
158 | } | |
159 | die(_("Unknown action: %d"), opts->action); | |
043a4492 RR |
160 | } |
161 | ||
043a4492 RR |
162 | struct commit_message { |
163 | char *parent_label; | |
7b35eaf8 JK |
164 | char *label; |
165 | char *subject; | |
043a4492 RR |
166 | const char *message; |
167 | }; | |
168 | ||
39755964 JS |
169 | static const char *short_commit_name(struct commit *commit) |
170 | { | |
171 | return find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV); | |
172 | } | |
173 | ||
043a4492 RR |
174 | static int get_message(struct commit *commit, struct commit_message *out) |
175 | { | |
043a4492 | 176 | const char *abbrev, *subject; |
7b35eaf8 | 177 | int subject_len; |
043a4492 | 178 | |
7b35eaf8 | 179 | out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding()); |
39755964 | 180 | abbrev = short_commit_name(commit); |
043a4492 RR |
181 | |
182 | subject_len = find_commit_subject(out->message, &subject); | |
183 | ||
7b35eaf8 JK |
184 | out->subject = xmemdupz(subject, subject_len); |
185 | out->label = xstrfmt("%s... %s", abbrev, out->subject); | |
186 | out->parent_label = xstrfmt("parent of %s", out->label); | |
187 | ||
043a4492 RR |
188 | return 0; |
189 | } | |
190 | ||
d74a4e57 | 191 | static void free_message(struct commit *commit, struct commit_message *msg) |
043a4492 RR |
192 | { |
193 | free(msg->parent_label); | |
7b35eaf8 JK |
194 | free(msg->label); |
195 | free(msg->subject); | |
b66103c3 | 196 | unuse_commit_buffer(commit, msg->message); |
043a4492 RR |
197 | } |
198 | ||
ed727b19 | 199 | static void print_advice(int show_hint, struct replay_opts *opts) |
043a4492 RR |
200 | { |
201 | char *msg = getenv("GIT_CHERRY_PICK_HELP"); | |
202 | ||
203 | if (msg) { | |
204 | fprintf(stderr, "%s\n", msg); | |
205 | /* | |
41ccfdd9 | 206 | * A conflict has occurred but the porcelain |
043a4492 RR |
207 | * (typically rebase --interactive) wants to take care |
208 | * of the commit itself so remove CHERRY_PICK_HEAD | |
209 | */ | |
f932729c | 210 | unlink(git_path_cherry_pick_head()); |
043a4492 RR |
211 | return; |
212 | } | |
213 | ||
ed727b19 PH |
214 | if (show_hint) { |
215 | if (opts->no_commit) | |
216 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
217 | "with 'git add <paths>' or 'git rm <paths>'")); | |
218 | else | |
219 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
220 | "with 'git add <paths>' or 'git rm <paths>'\n" | |
221 | "and commit the result with 'git commit'")); | |
222 | } | |
043a4492 RR |
223 | } |
224 | ||
f56fffef JS |
225 | static int write_message(const void *buf, size_t len, const char *filename, |
226 | int append_eol) | |
043a4492 RR |
227 | { |
228 | static struct lock_file msg_file; | |
229 | ||
4ef3d8f0 JS |
230 | int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0); |
231 | if (msg_fd < 0) | |
93b3df6f | 232 | return error_errno(_("could not lock '%s'"), filename); |
75871495 | 233 | if (write_in_full(msg_fd, buf, len) < 0) { |
4f66c837 | 234 | rollback_lock_file(&msg_file); |
93b3df6f | 235 | return error_errno(_("could not write to '%s'"), filename); |
4f66c837 | 236 | } |
f56fffef JS |
237 | if (append_eol && write(msg_fd, "\n", 1) < 0) { |
238 | rollback_lock_file(&msg_file); | |
35871806 | 239 | return error_errno(_("could not write eol to '%s'"), filename); |
f56fffef | 240 | } |
4f66c837 JS |
241 | if (commit_lock_file(&msg_file) < 0) { |
242 | rollback_lock_file(&msg_file); | |
93b3df6f | 243 | return error(_("failed to finalize '%s'."), filename); |
4f66c837 | 244 | } |
4ef3d8f0 JS |
245 | |
246 | return 0; | |
043a4492 RR |
247 | } |
248 | ||
1dfc84e9 JS |
249 | /* |
250 | * Reads a file that was presumably written by a shell script, i.e. with an | |
251 | * end-of-line marker that needs to be stripped. | |
252 | * | |
253 | * Note that only the last end-of-line marker is stripped, consistent with the | |
254 | * behavior of "$(cat path)" in a shell script. | |
255 | * | |
256 | * Returns 1 if the file was read, 0 if it could not be read or does not exist. | |
257 | */ | |
258 | static int read_oneliner(struct strbuf *buf, | |
259 | const char *path, int skip_if_empty) | |
260 | { | |
261 | int orig_len = buf->len; | |
262 | ||
263 | if (!file_exists(path)) | |
264 | return 0; | |
265 | ||
266 | if (strbuf_read_file(buf, path, 0) < 0) { | |
267 | warning_errno(_("could not read '%s'"), path); | |
268 | return 0; | |
269 | } | |
270 | ||
271 | if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') { | |
272 | if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r') | |
273 | --buf->len; | |
274 | buf->buf[buf->len] = '\0'; | |
275 | } | |
276 | ||
277 | if (skip_if_empty && buf->len == orig_len) | |
278 | return 0; | |
279 | ||
280 | return 1; | |
281 | } | |
282 | ||
043a4492 RR |
283 | static struct tree *empty_tree(void) |
284 | { | |
cba595bd | 285 | return lookup_tree(EMPTY_TREE_SHA1_BIN); |
043a4492 RR |
286 | } |
287 | ||
288 | static int error_dirty_index(struct replay_opts *opts) | |
289 | { | |
290 | if (read_cache_unmerged()) | |
c28cbc5e | 291 | return error_resolve_conflict(_(action_name(opts))); |
043a4492 | 292 | |
93b3df6f | 293 | error(_("your local changes would be overwritten by %s."), |
c28cbc5e | 294 | _(action_name(opts))); |
043a4492 RR |
295 | |
296 | if (advice_commit_before_merge) | |
93b3df6f | 297 | advise(_("commit your changes or stash them to proceed.")); |
043a4492 RR |
298 | return -1; |
299 | } | |
300 | ||
1e41229d SB |
301 | static void update_abort_safety_file(void) |
302 | { | |
303 | struct object_id head; | |
304 | ||
305 | /* Do nothing on a single-pick */ | |
306 | if (!file_exists(git_path_seq_dir())) | |
307 | return; | |
308 | ||
309 | if (!get_oid("HEAD", &head)) | |
310 | write_file(git_path_abort_safety_file(), "%s", oid_to_hex(&head)); | |
311 | else | |
312 | write_file(git_path_abort_safety_file(), "%s", ""); | |
313 | } | |
314 | ||
334ae397 | 315 | static int fast_forward_to(const unsigned char *to, const unsigned char *from, |
eb4be1cb | 316 | int unborn, struct replay_opts *opts) |
043a4492 | 317 | { |
d668d16c | 318 | struct ref_transaction *transaction; |
eb4be1cb | 319 | struct strbuf sb = STRBUF_INIT; |
d668d16c | 320 | struct strbuf err = STRBUF_INIT; |
043a4492 RR |
321 | |
322 | read_cache(); | |
db699a8a | 323 | if (checkout_fast_forward(from, to, 1)) |
0e408fc3 | 324 | return -1; /* the callee should have complained already */ |
651ab9f5 | 325 | |
c28cbc5e | 326 | strbuf_addf(&sb, _("%s: fast-forward"), _(action_name(opts))); |
d668d16c RS |
327 | |
328 | transaction = ref_transaction_begin(&err); | |
329 | if (!transaction || | |
330 | ref_transaction_update(transaction, "HEAD", | |
331 | to, unborn ? null_sha1 : from, | |
1d147bdf | 332 | 0, sb.buf, &err) || |
db7516ab | 333 | ref_transaction_commit(transaction, &err)) { |
d668d16c RS |
334 | ref_transaction_free(transaction); |
335 | error("%s", err.buf); | |
336 | strbuf_release(&sb); | |
337 | strbuf_release(&err); | |
338 | return -1; | |
339 | } | |
651ab9f5 | 340 | |
eb4be1cb | 341 | strbuf_release(&sb); |
d668d16c RS |
342 | strbuf_release(&err); |
343 | ref_transaction_free(transaction); | |
1e41229d | 344 | update_abort_safety_file(); |
d668d16c | 345 | return 0; |
043a4492 RR |
346 | } |
347 | ||
75c961b7 JH |
348 | void append_conflicts_hint(struct strbuf *msgbuf) |
349 | { | |
350 | int i; | |
351 | ||
261f315b JH |
352 | strbuf_addch(msgbuf, '\n'); |
353 | strbuf_commented_addf(msgbuf, "Conflicts:\n"); | |
75c961b7 JH |
354 | for (i = 0; i < active_nr;) { |
355 | const struct cache_entry *ce = active_cache[i++]; | |
356 | if (ce_stage(ce)) { | |
261f315b | 357 | strbuf_commented_addf(msgbuf, "\t%s\n", ce->name); |
75c961b7 JH |
358 | while (i < active_nr && !strcmp(ce->name, |
359 | active_cache[i]->name)) | |
360 | i++; | |
361 | } | |
362 | } | |
363 | } | |
364 | ||
043a4492 RR |
365 | static int do_recursive_merge(struct commit *base, struct commit *next, |
366 | const char *base_label, const char *next_label, | |
367 | unsigned char *head, struct strbuf *msgbuf, | |
368 | struct replay_opts *opts) | |
369 | { | |
370 | struct merge_options o; | |
371 | struct tree *result, *next_tree, *base_tree, *head_tree; | |
03b86647 | 372 | int clean; |
03a4e260 | 373 | char **xopt; |
043a4492 RR |
374 | static struct lock_file index_lock; |
375 | ||
b3e83cc7 | 376 | hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR); |
043a4492 RR |
377 | |
378 | read_cache(); | |
379 | ||
380 | init_merge_options(&o); | |
381 | o.ancestor = base ? base_label : "(empty tree)"; | |
382 | o.branch1 = "HEAD"; | |
383 | o.branch2 = next ? next_label : "(empty tree)"; | |
384 | ||
385 | head_tree = parse_tree_indirect(head); | |
386 | next_tree = next ? next->tree : empty_tree(); | |
387 | base_tree = base ? base->tree : empty_tree(); | |
388 | ||
389 | for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++) | |
390 | parse_merge_opt(&o, *xopt); | |
391 | ||
392 | clean = merge_trees(&o, | |
393 | head_tree, | |
394 | next_tree, base_tree, &result); | |
548009c0 | 395 | strbuf_release(&o.obuf); |
f241ff0d JS |
396 | if (clean < 0) |
397 | return clean; | |
043a4492 RR |
398 | |
399 | if (active_cache_changed && | |
03b86647 | 400 | write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) |
84583957 JS |
401 | /* TRANSLATORS: %s will be "revert", "cherry-pick" or |
402 | * "rebase -i". | |
403 | */ | |
c527b55e | 404 | return error(_("%s: Unable to write new index file"), |
c28cbc5e | 405 | _(action_name(opts))); |
043a4492 RR |
406 | rollback_lock_file(&index_lock); |
407 | ||
5ed75e2a | 408 | if (opts->signoff) |
bab4d109 | 409 | append_signoff(msgbuf, 0, 0); |
5ed75e2a | 410 | |
75c961b7 JH |
411 | if (!clean) |
412 | append_conflicts_hint(msgbuf); | |
043a4492 RR |
413 | |
414 | return !clean; | |
415 | } | |
416 | ||
b27cfb0d NH |
417 | static int is_index_unchanged(void) |
418 | { | |
419 | unsigned char head_sha1[20]; | |
420 | struct commit *head_commit; | |
421 | ||
7695d118 | 422 | if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL)) |
93b3df6f | 423 | return error(_("could not resolve HEAD commit\n")); |
b27cfb0d NH |
424 | |
425 | head_commit = lookup_commit(head_sha1); | |
4b580061 NH |
426 | |
427 | /* | |
428 | * If head_commit is NULL, check_commit, called from | |
429 | * lookup_commit, would have indicated that head_commit is not | |
430 | * a commit object already. parse_commit() will return failure | |
431 | * without further complaints in such a case. Otherwise, if | |
432 | * the commit is invalid, parse_commit() will complain. So | |
433 | * there is nothing for us to say here. Just return failure. | |
434 | */ | |
435 | if (parse_commit(head_commit)) | |
436 | return -1; | |
b27cfb0d NH |
437 | |
438 | if (!active_cache_tree) | |
439 | active_cache_tree = cache_tree(); | |
440 | ||
441 | if (!cache_tree_fully_valid(active_cache_tree)) | |
d0cfc3e8 | 442 | if (cache_tree_update(&the_index, 0)) |
93b3df6f | 443 | return error(_("unable to update cache tree\n")); |
b27cfb0d | 444 | |
ed1c9977 | 445 | return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); |
b27cfb0d NH |
446 | } |
447 | ||
b5a67045 JS |
448 | /* |
449 | * Read the author-script file into an environment block, ready for use in | |
450 | * run_command(), that can be free()d afterwards. | |
451 | */ | |
452 | static char **read_author_script(void) | |
453 | { | |
454 | struct strbuf script = STRBUF_INIT; | |
455 | int i, count = 0; | |
456 | char *p, *p2, **env; | |
457 | size_t env_size; | |
458 | ||
459 | if (strbuf_read_file(&script, rebase_path_author_script(), 256) <= 0) | |
460 | return NULL; | |
461 | ||
462 | for (p = script.buf; *p; p++) | |
463 | if (skip_prefix(p, "'\\\\''", (const char **)&p2)) | |
464 | strbuf_splice(&script, p - script.buf, p2 - p, "'", 1); | |
465 | else if (*p == '\'') | |
466 | strbuf_splice(&script, p-- - script.buf, 1, "", 0); | |
467 | else if (*p == '\n') { | |
468 | *p = '\0'; | |
469 | count++; | |
470 | } | |
471 | ||
472 | env_size = (count + 1) * sizeof(*env); | |
473 | strbuf_grow(&script, env_size); | |
474 | memmove(script.buf + env_size, script.buf, script.len); | |
475 | p = script.buf + env_size; | |
476 | env = (char **)strbuf_detach(&script, NULL); | |
477 | ||
478 | for (i = 0; i < count; i++) { | |
479 | env[i] = p; | |
480 | p += strlen(p) + 1; | |
481 | } | |
482 | env[count] = NULL; | |
483 | ||
484 | return env; | |
485 | } | |
486 | ||
791eb870 JS |
487 | static const char staged_changes_advice[] = |
488 | N_("you have staged changes in your working tree\n" | |
489 | "If these changes are meant to be squashed into the previous commit, run:\n" | |
490 | "\n" | |
491 | " git commit --amend %s\n" | |
492 | "\n" | |
493 | "If they are meant to go into a new commit, run:\n" | |
494 | "\n" | |
495 | " git commit %s\n" | |
496 | "\n" | |
497 | "In both cases, once you're done, continue with:\n" | |
498 | "\n" | |
499 | " git rebase --continue\n"); | |
500 | ||
043a4492 RR |
501 | /* |
502 | * If we are cherry-pick, and if the merge did not result in | |
503 | * hand-editing, we will hit this commit and inherit the original | |
504 | * author date and name. | |
b5a67045 | 505 | * |
043a4492 RR |
506 | * If we are revert, or if our cherry-pick results in a hand merge, |
507 | * we had better say that the current user is responsible for that. | |
b5a67045 JS |
508 | * |
509 | * An exception is when run_git_commit() is called during an | |
510 | * interactive rebase: in that case, we will want to retain the | |
511 | * author metadata. | |
043a4492 | 512 | */ |
ac2b0e8f | 513 | static int run_git_commit(const char *defmsg, struct replay_opts *opts, |
0009426d JS |
514 | int allow_empty, int edit, int amend, |
515 | int cleanup_commit_message) | |
043a4492 | 516 | { |
b5a67045 | 517 | char **env = NULL; |
b27cfb0d NH |
518 | struct argv_array array; |
519 | int rc; | |
17d65f03 | 520 | const char *value; |
b27cfb0d | 521 | |
b5a67045 JS |
522 | if (is_rebase_i(opts)) { |
523 | env = read_author_script(); | |
a1c75762 JS |
524 | if (!env) { |
525 | const char *gpg_opt = gpg_sign_opt_quoted(opts); | |
526 | ||
791eb870 JS |
527 | return error(_(staged_changes_advice), |
528 | gpg_opt, gpg_opt); | |
a1c75762 | 529 | } |
b5a67045 JS |
530 | } |
531 | ||
b27cfb0d NH |
532 | argv_array_init(&array); |
533 | argv_array_push(&array, "commit"); | |
534 | argv_array_push(&array, "-n"); | |
043a4492 | 535 | |
9240beda JS |
536 | if (amend) |
537 | argv_array_push(&array, "--amend"); | |
3bdd5522 JK |
538 | if (opts->gpg_sign) |
539 | argv_array_pushf(&array, "-S%s", opts->gpg_sign); | |
043a4492 | 540 | if (opts->signoff) |
b27cfb0d | 541 | argv_array_push(&array, "-s"); |
b5a67045 JS |
542 | if (defmsg) |
543 | argv_array_pushl(&array, "-F", defmsg, NULL); | |
0009426d JS |
544 | if (cleanup_commit_message) |
545 | argv_array_push(&array, "--cleanup=strip"); | |
a1c75762 | 546 | if (edit) |
b5a67045 | 547 | argv_array_push(&array, "-e"); |
0009426d JS |
548 | else if (!cleanup_commit_message && |
549 | !opts->signoff && !opts->record_origin && | |
b5a67045 JS |
550 | git_config_get_value("commit.cleanup", &value)) |
551 | argv_array_push(&array, "--cleanup=verbatim"); | |
b27cfb0d | 552 | |
ac2b0e8f | 553 | if (allow_empty) |
b27cfb0d | 554 | argv_array_push(&array, "--allow-empty"); |
df478b74 | 555 | |
4bee9584 CW |
556 | if (opts->allow_empty_message) |
557 | argv_array_push(&array, "--allow-empty-message"); | |
558 | ||
b5a67045 JS |
559 | rc = run_command_v_opt_cd_env(array.argv, RUN_GIT_CMD, NULL, |
560 | (const char *const *)env); | |
b27cfb0d | 561 | argv_array_clear(&array); |
b5a67045 JS |
562 | free(env); |
563 | ||
b27cfb0d NH |
564 | return rc; |
565 | } | |
566 | ||
567 | static int is_original_commit_empty(struct commit *commit) | |
568 | { | |
569 | const unsigned char *ptree_sha1; | |
570 | ||
571 | if (parse_commit(commit)) | |
93b3df6f | 572 | return error(_("could not parse commit %s\n"), |
f2fd0760 | 573 | oid_to_hex(&commit->object.oid)); |
b27cfb0d NH |
574 | if (commit->parents) { |
575 | struct commit *parent = commit->parents->item; | |
576 | if (parse_commit(parent)) | |
93b3df6f | 577 | return error(_("could not parse parent commit %s\n"), |
f2fd0760 | 578 | oid_to_hex(&parent->object.oid)); |
ed1c9977 | 579 | ptree_sha1 = parent->tree->object.oid.hash; |
b27cfb0d NH |
580 | } else { |
581 | ptree_sha1 = EMPTY_TREE_SHA1_BIN; /* commit is root */ | |
043a4492 | 582 | } |
043a4492 | 583 | |
ed1c9977 | 584 | return !hashcmp(ptree_sha1, commit->tree->object.oid.hash); |
043a4492 RR |
585 | } |
586 | ||
ac2b0e8f JH |
587 | /* |
588 | * Do we run "git commit" with "--allow-empty"? | |
589 | */ | |
590 | static int allow_empty(struct replay_opts *opts, struct commit *commit) | |
591 | { | |
592 | int index_unchanged, empty_commit; | |
593 | ||
594 | /* | |
595 | * Three cases: | |
596 | * | |
597 | * (1) we do not allow empty at all and error out. | |
598 | * | |
599 | * (2) we allow ones that were initially empty, but | |
600 | * forbid the ones that become empty; | |
601 | * | |
602 | * (3) we allow both. | |
603 | */ | |
604 | if (!opts->allow_empty) | |
605 | return 0; /* let "git commit" barf as necessary */ | |
606 | ||
607 | index_unchanged = is_index_unchanged(); | |
608 | if (index_unchanged < 0) | |
609 | return index_unchanged; | |
610 | if (!index_unchanged) | |
611 | return 0; /* we do not have to say --allow-empty */ | |
612 | ||
613 | if (opts->keep_redundant_commits) | |
614 | return 1; | |
615 | ||
616 | empty_commit = is_original_commit_empty(commit); | |
617 | if (empty_commit < 0) | |
618 | return empty_commit; | |
619 | if (!empty_commit) | |
620 | return 0; | |
621 | else | |
622 | return 1; | |
623 | } | |
624 | ||
25c43667 JS |
625 | /* |
626 | * Note that ordering matters in this enum. Not only must it match the mapping | |
627 | * below, it is also divided into several sections that matter. When adding | |
628 | * new commands, make sure you add it in the right section. | |
629 | */ | |
004fefa7 | 630 | enum todo_command { |
25c43667 | 631 | /* commands that handle commits */ |
004fefa7 | 632 | TODO_PICK = 0, |
25c43667 | 633 | TODO_REVERT, |
56dc3ab0 | 634 | TODO_EDIT, |
25c43667 JS |
635 | /* commands that do nothing but are counted for reporting progress */ |
636 | TODO_NOOP | |
004fefa7 JS |
637 | }; |
638 | ||
639 | static const char *todo_command_strings[] = { | |
640 | "pick", | |
25c43667 | 641 | "revert", |
56dc3ab0 | 642 | "edit", |
25c43667 | 643 | "noop" |
004fefa7 JS |
644 | }; |
645 | ||
646 | static const char *command_to_string(const enum todo_command command) | |
647 | { | |
2ae38f2a | 648 | if ((size_t)command < ARRAY_SIZE(todo_command_strings)) |
004fefa7 JS |
649 | return todo_command_strings[command]; |
650 | die("Unknown command: %d", command); | |
651 | } | |
652 | ||
25c43667 JS |
653 | static int is_noop(const enum todo_command command) |
654 | { | |
655 | return TODO_NOOP <= (size_t)command; | |
656 | } | |
004fefa7 JS |
657 | |
658 | static int do_pick_commit(enum todo_command command, struct commit *commit, | |
659 | struct replay_opts *opts) | |
043a4492 RR |
660 | { |
661 | unsigned char head[20]; | |
662 | struct commit *base, *next, *parent; | |
663 | const char *base_label, *next_label; | |
d74a4e57 | 664 | struct commit_message msg = { NULL, NULL, NULL, NULL }; |
043a4492 | 665 | struct strbuf msgbuf = STRBUF_INIT; |
c8d1351d | 666 | int res, unborn = 0, allow; |
043a4492 RR |
667 | |
668 | if (opts->no_commit) { | |
669 | /* | |
670 | * We do not intend to commit immediately. We just want to | |
671 | * merge the differences in, so let's compute the tree | |
672 | * that represents the "current" state for merge-recursive | |
673 | * to work on. | |
674 | */ | |
675 | if (write_cache_as_tree(head, 0, NULL)) | |
93b3df6f | 676 | return error(_("your index file is unmerged.")); |
043a4492 | 677 | } else { |
334ae397 MZ |
678 | unborn = get_sha1("HEAD", head); |
679 | if (unborn) | |
680 | hashcpy(head, EMPTY_TREE_SHA1_BIN); | |
018ec3c8 | 681 | if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0, 0)) |
043a4492 RR |
682 | return error_dirty_index(opts); |
683 | } | |
684 | discard_cache(); | |
685 | ||
637666c8 | 686 | if (!commit->parents) |
043a4492 | 687 | parent = NULL; |
043a4492 RR |
688 | else if (commit->parents->next) { |
689 | /* Reverting or cherry-picking a merge commit */ | |
690 | int cnt; | |
691 | struct commit_list *p; | |
692 | ||
693 | if (!opts->mainline) | |
93b3df6f | 694 | return error(_("commit %s is a merge but no -m option was given."), |
f2fd0760 | 695 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
696 | |
697 | for (cnt = 1, p = commit->parents; | |
698 | cnt != opts->mainline && p; | |
699 | cnt++) | |
700 | p = p->next; | |
701 | if (cnt != opts->mainline || !p) | |
93b3df6f | 702 | return error(_("commit %s does not have parent %d"), |
f2fd0760 | 703 | oid_to_hex(&commit->object.oid), opts->mainline); |
043a4492 RR |
704 | parent = p->item; |
705 | } else if (0 < opts->mainline) | |
93b3df6f | 706 | return error(_("mainline was specified but commit %s is not a merge."), |
f2fd0760 | 707 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
708 | else |
709 | parent = commit->parents->item; | |
710 | ||
334ae397 | 711 | if (opts->allow_ff && |
ed1c9977 | 712 | ((parent && !hashcmp(parent->object.oid.hash, head)) || |
334ae397 | 713 | (!parent && unborn))) |
ed1c9977 | 714 | return fast_forward_to(commit->object.oid.hash, head, unborn, opts); |
043a4492 RR |
715 | |
716 | if (parent && parse_commit(parent) < 0) | |
004fefa7 JS |
717 | /* TRANSLATORS: The first %s will be a "todo" command like |
718 | "revert" or "pick", the second %s a SHA1. */ | |
043a4492 | 719 | return error(_("%s: cannot parse parent commit %s"), |
004fefa7 JS |
720 | command_to_string(command), |
721 | oid_to_hex(&parent->object.oid)); | |
043a4492 RR |
722 | |
723 | if (get_message(commit, &msg) != 0) | |
93b3df6f | 724 | return error(_("cannot get commit message for %s"), |
f2fd0760 | 725 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
726 | |
727 | /* | |
728 | * "commit" is an existing commit. We would want to apply | |
729 | * the difference it introduces since its first parent "prev" | |
730 | * on top of the current HEAD if we are cherry-pick. Or the | |
731 | * reverse of it if we are revert. | |
732 | */ | |
733 | ||
004fefa7 | 734 | if (command == TODO_REVERT) { |
043a4492 RR |
735 | base = commit; |
736 | base_label = msg.label; | |
737 | next = parent; | |
738 | next_label = msg.parent_label; | |
739 | strbuf_addstr(&msgbuf, "Revert \""); | |
740 | strbuf_addstr(&msgbuf, msg.subject); | |
741 | strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit "); | |
f2fd0760 | 742 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
743 | |
744 | if (commit->parents && commit->parents->next) { | |
745 | strbuf_addstr(&msgbuf, ", reversing\nchanges made to "); | |
f2fd0760 | 746 | strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid)); |
043a4492 RR |
747 | } |
748 | strbuf_addstr(&msgbuf, ".\n"); | |
749 | } else { | |
750 | const char *p; | |
751 | ||
752 | base = parent; | |
753 | base_label = msg.parent_label; | |
754 | next = commit; | |
755 | next_label = msg.label; | |
756 | ||
23aa5142 JS |
757 | /* Append the commit log message to msgbuf. */ |
758 | if (find_commit_subject(msg.message, &p)) | |
759 | strbuf_addstr(&msgbuf, p); | |
043a4492 RR |
760 | |
761 | if (opts->record_origin) { | |
bab4d109 | 762 | if (!has_conforming_footer(&msgbuf, NULL, 0)) |
b971e04f | 763 | strbuf_addch(&msgbuf, '\n'); |
cd650a4e | 764 | strbuf_addstr(&msgbuf, cherry_picked_prefix); |
f2fd0760 | 765 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
766 | strbuf_addstr(&msgbuf, ")\n"); |
767 | } | |
768 | } | |
769 | ||
004fefa7 | 770 | if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { |
043a4492 RR |
771 | res = do_recursive_merge(base, next, base_label, next_label, |
772 | head, &msgbuf, opts); | |
f241ff0d JS |
773 | if (res < 0) |
774 | return res; | |
75871495 | 775 | res |= write_message(msgbuf.buf, msgbuf.len, |
f56fffef | 776 | git_path_merge_msg(), 0); |
043a4492 RR |
777 | } else { |
778 | struct commit_list *common = NULL; | |
779 | struct commit_list *remotes = NULL; | |
780 | ||
75871495 | 781 | res = write_message(msgbuf.buf, msgbuf.len, |
f56fffef | 782 | git_path_merge_msg(), 0); |
043a4492 RR |
783 | |
784 | commit_list_insert(base, &common); | |
785 | commit_list_insert(next, &remotes); | |
03a4e260 JS |
786 | res |= try_merge_command(opts->strategy, |
787 | opts->xopts_nr, (const char **)opts->xopts, | |
043a4492 RR |
788 | common, sha1_to_hex(head), remotes); |
789 | free_commit_list(common); | |
790 | free_commit_list(remotes); | |
791 | } | |
452202c7 | 792 | strbuf_release(&msgbuf); |
043a4492 RR |
793 | |
794 | /* | |
795 | * If the merge was clean or if it failed due to conflict, we write | |
796 | * CHERRY_PICK_HEAD for the subsequent invocation of commit to use. | |
797 | * However, if the merge did not even start, then we don't want to | |
798 | * write it at all. | |
799 | */ | |
004fefa7 | 800 | if (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) && |
dbfad033 JS |
801 | update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, |
802 | REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) | |
803 | res = -1; | |
004fefa7 | 804 | if (command == TODO_REVERT && ((opts->no_commit && res == 0) || res == 1) && |
dbfad033 JS |
805 | update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, |
806 | REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) | |
807 | res = -1; | |
043a4492 RR |
808 | |
809 | if (res) { | |
004fefa7 | 810 | error(command == TODO_REVERT |
043a4492 RR |
811 | ? _("could not revert %s... %s") |
812 | : _("could not apply %s... %s"), | |
39755964 | 813 | short_commit_name(commit), msg.subject); |
ed727b19 | 814 | print_advice(res == 1, opts); |
043a4492 | 815 | rerere(opts->allow_rerere_auto); |
c8d1351d | 816 | goto leave; |
043a4492 RR |
817 | } |
818 | ||
c8d1351d | 819 | allow = allow_empty(opts, commit); |
706728a3 FC |
820 | if (allow < 0) { |
821 | res = allow; | |
822 | goto leave; | |
823 | } | |
c8d1351d | 824 | if (!opts->no_commit) |
b5a67045 | 825 | res = run_git_commit(opts->edit ? NULL : git_path_merge_msg(), |
0009426d | 826 | opts, allow, opts->edit, 0, 0); |
c8d1351d FC |
827 | |
828 | leave: | |
d74a4e57 | 829 | free_message(commit, &msg); |
1e41229d | 830 | update_abort_safety_file(); |
043a4492 RR |
831 | |
832 | return res; | |
833 | } | |
834 | ||
c3e8618c | 835 | static int prepare_revs(struct replay_opts *opts) |
043a4492 | 836 | { |
a73e22e9 MZ |
837 | /* |
838 | * picking (but not reverting) ranges (but not individual revisions) | |
839 | * should be done in reverse | |
840 | */ | |
841 | if (opts->action == REPLAY_PICK && !opts->revs->no_walk) | |
043a4492 RR |
842 | opts->revs->reverse ^= 1; |
843 | ||
844 | if (prepare_revision_walk(opts->revs)) | |
c3e8618c | 845 | return error(_("revision walk setup failed")); |
043a4492 RR |
846 | |
847 | if (!opts->revs->commits) | |
c3e8618c JS |
848 | return error(_("empty commit set passed")); |
849 | return 0; | |
043a4492 RR |
850 | } |
851 | ||
0d9c6dc9 | 852 | static int read_and_refresh_cache(struct replay_opts *opts) |
043a4492 RR |
853 | { |
854 | static struct lock_file index_lock; | |
855 | int index_fd = hold_locked_index(&index_lock, 0); | |
49fb937e JS |
856 | if (read_index_preload(&the_index, NULL) < 0) { |
857 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 858 | return error(_("git %s: failed to read the index"), |
c28cbc5e | 859 | _(action_name(opts))); |
49fb937e | 860 | } |
043a4492 | 861 | refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); |
33c297aa | 862 | if (the_index.cache_changed && index_fd >= 0) { |
49fb937e JS |
863 | if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) { |
864 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 865 | return error(_("git %s: failed to refresh the index"), |
c28cbc5e | 866 | _(action_name(opts))); |
49fb937e | 867 | } |
043a4492 RR |
868 | } |
869 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 870 | return 0; |
043a4492 RR |
871 | } |
872 | ||
004fefa7 JS |
873 | struct todo_item { |
874 | enum todo_command command; | |
875 | struct commit *commit; | |
c22f7dfb JS |
876 | const char *arg; |
877 | int arg_len; | |
004fefa7 JS |
878 | size_t offset_in_buf; |
879 | }; | |
880 | ||
881 | struct todo_list { | |
882 | struct strbuf buf; | |
883 | struct todo_item *items; | |
884 | int nr, alloc, current; | |
885 | }; | |
886 | ||
887 | #define TODO_LIST_INIT { STRBUF_INIT } | |
888 | ||
889 | static void todo_list_release(struct todo_list *todo_list) | |
043a4492 | 890 | { |
004fefa7 JS |
891 | strbuf_release(&todo_list->buf); |
892 | free(todo_list->items); | |
893 | todo_list->items = NULL; | |
894 | todo_list->nr = todo_list->alloc = 0; | |
895 | } | |
043a4492 | 896 | |
004fefa7 JS |
897 | static struct todo_item *append_new_todo(struct todo_list *todo_list) |
898 | { | |
899 | ALLOC_GROW(todo_list->items, todo_list->nr + 1, todo_list->alloc); | |
900 | return todo_list->items + todo_list->nr++; | |
043a4492 RR |
901 | } |
902 | ||
004fefa7 | 903 | static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) |
043a4492 RR |
904 | { |
905 | unsigned char commit_sha1[20]; | |
043a4492 | 906 | char *end_of_object_name; |
004fefa7 JS |
907 | int i, saved, status, padding; |
908 | ||
8f8550b3 JS |
909 | /* left-trim */ |
910 | bol += strspn(bol, " \t"); | |
911 | ||
25c43667 JS |
912 | if (bol == eol || *bol == '\r' || *bol == comment_line_char) { |
913 | item->command = TODO_NOOP; | |
914 | item->commit = NULL; | |
915 | item->arg = bol; | |
916 | item->arg_len = eol - bol; | |
917 | return 0; | |
918 | } | |
919 | ||
004fefa7 JS |
920 | for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++) |
921 | if (skip_prefix(bol, todo_command_strings[i], &bol)) { | |
922 | item->command = i; | |
923 | break; | |
924 | } | |
925 | if (i >= ARRAY_SIZE(todo_command_strings)) | |
926 | return -1; | |
043a4492 | 927 | |
25c43667 JS |
928 | if (item->command == TODO_NOOP) { |
929 | item->commit = NULL; | |
930 | item->arg = bol; | |
931 | item->arg_len = eol - bol; | |
932 | return 0; | |
933 | } | |
934 | ||
043a4492 RR |
935 | /* Eat up extra spaces/ tabs before object name */ |
936 | padding = strspn(bol, " \t"); | |
937 | if (!padding) | |
004fefa7 | 938 | return -1; |
043a4492 RR |
939 | bol += padding; |
940 | ||
004fefa7 | 941 | end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); |
043a4492 RR |
942 | saved = *end_of_object_name; |
943 | *end_of_object_name = '\0'; | |
944 | status = get_sha1(bol, commit_sha1); | |
945 | *end_of_object_name = saved; | |
946 | ||
c22f7dfb JS |
947 | item->arg = end_of_object_name + strspn(end_of_object_name, " \t"); |
948 | item->arg_len = (int)(eol - item->arg); | |
949 | ||
043a4492 | 950 | if (status < 0) |
004fefa7 | 951 | return -1; |
043a4492 | 952 | |
004fefa7 JS |
953 | item->commit = lookup_commit_reference(commit_sha1); |
954 | return !item->commit; | |
043a4492 RR |
955 | } |
956 | ||
004fefa7 | 957 | static int parse_insn_buffer(char *buf, struct todo_list *todo_list) |
043a4492 | 958 | { |
004fefa7 JS |
959 | struct todo_item *item; |
960 | char *p = buf, *next_p; | |
961 | int i, res = 0; | |
043a4492 | 962 | |
004fefa7 | 963 | for (i = 1; *p; i++, p = next_p) { |
043a4492 | 964 | char *eol = strchrnul(p, '\n'); |
004fefa7 JS |
965 | |
966 | next_p = *eol ? eol + 1 /* skip LF */ : eol; | |
967 | ||
6307041d JS |
968 | if (p != eol && eol[-1] == '\r') |
969 | eol--; /* strip Carriage Return */ | |
970 | ||
004fefa7 JS |
971 | item = append_new_todo(todo_list); |
972 | item->offset_in_buf = p - todo_list->buf.buf; | |
973 | if (parse_insn_line(item, p, eol)) { | |
93b3df6f | 974 | res = error(_("invalid line %d: %.*s"), |
004fefa7 JS |
975 | i, (int)(eol - p), p); |
976 | item->command = -1; | |
977 | } | |
043a4492 | 978 | } |
004fefa7 | 979 | if (!todo_list->nr) |
93b3df6f | 980 | return error(_("no commits parsed.")); |
004fefa7 | 981 | return res; |
043a4492 RR |
982 | } |
983 | ||
004fefa7 | 984 | static int read_populate_todo(struct todo_list *todo_list, |
043a4492 RR |
985 | struct replay_opts *opts) |
986 | { | |
c0246501 | 987 | const char *todo_file = get_todo_path(opts); |
043a4492 RR |
988 | int fd, res; |
989 | ||
004fefa7 | 990 | strbuf_reset(&todo_list->buf); |
c0246501 | 991 | fd = open(todo_file, O_RDONLY); |
043a4492 | 992 | if (fd < 0) |
93b3df6f | 993 | return error_errno(_("could not open '%s'"), todo_file); |
004fefa7 | 994 | if (strbuf_read(&todo_list->buf, fd, 0) < 0) { |
043a4492 | 995 | close(fd); |
93b3df6f | 996 | return error(_("could not read '%s'."), todo_file); |
043a4492 RR |
997 | } |
998 | close(fd); | |
999 | ||
004fefa7 | 1000 | res = parse_insn_buffer(todo_list->buf.buf, todo_list); |
2eeaf1b3 | 1001 | if (res) |
93b3df6f | 1002 | return error(_("unusable instruction sheet: '%s'"), todo_file); |
2eeaf1b3 JS |
1003 | |
1004 | if (!is_rebase_i(opts)) { | |
004fefa7 JS |
1005 | enum todo_command valid = |
1006 | opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT; | |
1007 | int i; | |
1008 | ||
1009 | for (i = 0; i < todo_list->nr; i++) | |
1010 | if (valid == todo_list->items[i].command) | |
1011 | continue; | |
1012 | else if (valid == TODO_PICK) | |
93b3df6f | 1013 | return error(_("cannot cherry-pick during a revert.")); |
004fefa7 | 1014 | else |
93b3df6f | 1015 | return error(_("cannot revert during a cherry-pick.")); |
004fefa7 JS |
1016 | } |
1017 | ||
0ae42a03 | 1018 | return 0; |
043a4492 RR |
1019 | } |
1020 | ||
03a4e260 JS |
1021 | static int git_config_string_dup(char **dest, |
1022 | const char *var, const char *value) | |
1023 | { | |
1024 | if (!value) | |
1025 | return config_error_nonbool(var); | |
1026 | free(*dest); | |
1027 | *dest = xstrdup(value); | |
1028 | return 0; | |
1029 | } | |
1030 | ||
043a4492 RR |
1031 | static int populate_opts_cb(const char *key, const char *value, void *data) |
1032 | { | |
1033 | struct replay_opts *opts = data; | |
1034 | int error_flag = 1; | |
1035 | ||
1036 | if (!value) | |
1037 | error_flag = 0; | |
1038 | else if (!strcmp(key, "options.no-commit")) | |
1039 | opts->no_commit = git_config_bool_or_int(key, value, &error_flag); | |
1040 | else if (!strcmp(key, "options.edit")) | |
1041 | opts->edit = git_config_bool_or_int(key, value, &error_flag); | |
1042 | else if (!strcmp(key, "options.signoff")) | |
1043 | opts->signoff = git_config_bool_or_int(key, value, &error_flag); | |
1044 | else if (!strcmp(key, "options.record-origin")) | |
1045 | opts->record_origin = git_config_bool_or_int(key, value, &error_flag); | |
1046 | else if (!strcmp(key, "options.allow-ff")) | |
1047 | opts->allow_ff = git_config_bool_or_int(key, value, &error_flag); | |
1048 | else if (!strcmp(key, "options.mainline")) | |
1049 | opts->mainline = git_config_int(key, value); | |
1050 | else if (!strcmp(key, "options.strategy")) | |
03a4e260 | 1051 | git_config_string_dup(&opts->strategy, key, value); |
3253553e | 1052 | else if (!strcmp(key, "options.gpg-sign")) |
03a4e260 | 1053 | git_config_string_dup(&opts->gpg_sign, key, value); |
043a4492 RR |
1054 | else if (!strcmp(key, "options.strategy-option")) { |
1055 | ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc); | |
1056 | opts->xopts[opts->xopts_nr++] = xstrdup(value); | |
1057 | } else | |
93b3df6f | 1058 | return error(_("invalid key: %s"), key); |
043a4492 RR |
1059 | |
1060 | if (!error_flag) | |
93b3df6f | 1061 | return error(_("invalid value for %s: %s"), key, value); |
043a4492 RR |
1062 | |
1063 | return 0; | |
1064 | } | |
1065 | ||
5adf9bdc | 1066 | static int read_populate_opts(struct replay_opts *opts) |
043a4492 | 1067 | { |
a1c75762 JS |
1068 | if (is_rebase_i(opts)) { |
1069 | struct strbuf buf = STRBUF_INIT; | |
1070 | ||
1071 | if (read_oneliner(&buf, rebase_path_gpg_sign_opt(), 1)) { | |
1072 | if (!starts_with(buf.buf, "-S")) | |
1073 | strbuf_reset(&buf); | |
1074 | else { | |
1075 | free(opts->gpg_sign); | |
1076 | opts->gpg_sign = xstrdup(buf.buf + 2); | |
1077 | } | |
1078 | } | |
1079 | strbuf_release(&buf); | |
1080 | ||
b5a67045 | 1081 | return 0; |
a1c75762 | 1082 | } |
b5a67045 | 1083 | |
f932729c | 1084 | if (!file_exists(git_path_opts_file())) |
0d00da7b JS |
1085 | return 0; |
1086 | /* | |
1087 | * The function git_parse_source(), called from git_config_from_file(), | |
1088 | * may die() in case of a syntactically incorrect file. We do not care | |
1089 | * about this case, though, because we wrote that file ourselves, so we | |
1090 | * are pretty certain that it is syntactically correct. | |
1091 | */ | |
5adf9bdc | 1092 | if (git_config_from_file(populate_opts_cb, git_path_opts_file(), opts) < 0) |
93b3df6f | 1093 | return error(_("malformed options sheet: '%s'"), |
0d00da7b JS |
1094 | git_path_opts_file()); |
1095 | return 0; | |
043a4492 RR |
1096 | } |
1097 | ||
004fefa7 | 1098 | static int walk_revs_populate_todo(struct todo_list *todo_list, |
043a4492 RR |
1099 | struct replay_opts *opts) |
1100 | { | |
004fefa7 JS |
1101 | enum todo_command command = opts->action == REPLAY_PICK ? |
1102 | TODO_PICK : TODO_REVERT; | |
1103 | const char *command_string = todo_command_strings[command]; | |
043a4492 | 1104 | struct commit *commit; |
043a4492 | 1105 | |
34b0528b JS |
1106 | if (prepare_revs(opts)) |
1107 | return -1; | |
043a4492 | 1108 | |
004fefa7 JS |
1109 | while ((commit = get_revision(opts->revs))) { |
1110 | struct todo_item *item = append_new_todo(todo_list); | |
1111 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
1112 | const char *subject; | |
1113 | int subject_len; | |
1114 | ||
1115 | item->command = command; | |
1116 | item->commit = commit; | |
c22f7dfb JS |
1117 | item->arg = NULL; |
1118 | item->arg_len = 0; | |
004fefa7 JS |
1119 | item->offset_in_buf = todo_list->buf.len; |
1120 | subject_len = find_commit_subject(commit_buffer, &subject); | |
1121 | strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string, | |
1122 | short_commit_name(commit), subject_len, subject); | |
1123 | unuse_commit_buffer(commit, commit_buffer); | |
1124 | } | |
34b0528b | 1125 | return 0; |
043a4492 RR |
1126 | } |
1127 | ||
1128 | static int create_seq_dir(void) | |
1129 | { | |
f932729c | 1130 | if (file_exists(git_path_seq_dir())) { |
043a4492 RR |
1131 | error(_("a cherry-pick or revert is already in progress")); |
1132 | advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); | |
1133 | return -1; | |
a70d8f80 | 1134 | } else if (mkdir(git_path_seq_dir(), 0777) < 0) |
93b3df6f | 1135 | return error_errno(_("could not create sequencer directory '%s'"), |
f6e82b0d | 1136 | git_path_seq_dir()); |
043a4492 RR |
1137 | return 0; |
1138 | } | |
1139 | ||
311fd397 | 1140 | static int save_head(const char *head) |
043a4492 | 1141 | { |
043a4492 RR |
1142 | static struct lock_file head_lock; |
1143 | struct strbuf buf = STRBUF_INIT; | |
1144 | int fd; | |
1145 | ||
311fd397 JS |
1146 | fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0); |
1147 | if (fd < 0) { | |
1148 | rollback_lock_file(&head_lock); | |
93b3df6f | 1149 | return error_errno(_("could not lock HEAD")); |
311fd397 | 1150 | } |
043a4492 | 1151 | strbuf_addf(&buf, "%s\n", head); |
311fd397 JS |
1152 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
1153 | rollback_lock_file(&head_lock); | |
93b3df6f | 1154 | return error_errno(_("could not write to '%s'"), |
311fd397 JS |
1155 | git_path_head_file()); |
1156 | } | |
1157 | if (commit_lock_file(&head_lock) < 0) { | |
1158 | rollback_lock_file(&head_lock); | |
93b3df6f | 1159 | return error(_("failed to finalize '%s'."), git_path_head_file()); |
311fd397 JS |
1160 | } |
1161 | return 0; | |
043a4492 RR |
1162 | } |
1163 | ||
1e41229d SB |
1164 | static int rollback_is_safe(void) |
1165 | { | |
1166 | struct strbuf sb = STRBUF_INIT; | |
1167 | struct object_id expected_head, actual_head; | |
1168 | ||
1169 | if (strbuf_read_file(&sb, git_path_abort_safety_file(), 0) >= 0) { | |
1170 | strbuf_trim(&sb); | |
1171 | if (get_oid_hex(sb.buf, &expected_head)) { | |
1172 | strbuf_release(&sb); | |
1173 | die(_("could not parse %s"), git_path_abort_safety_file()); | |
1174 | } | |
1175 | strbuf_release(&sb); | |
1176 | } | |
1177 | else if (errno == ENOENT) | |
1178 | oidclr(&expected_head); | |
1179 | else | |
1180 | die_errno(_("could not read '%s'"), git_path_abort_safety_file()); | |
1181 | ||
1182 | if (get_oid("HEAD", &actual_head)) | |
1183 | oidclr(&actual_head); | |
1184 | ||
1185 | return !oidcmp(&actual_head, &expected_head); | |
1186 | } | |
1187 | ||
043a4492 RR |
1188 | static int reset_for_rollback(const unsigned char *sha1) |
1189 | { | |
1190 | const char *argv[4]; /* reset --merge <arg> + NULL */ | |
1e41229d | 1191 | |
043a4492 RR |
1192 | argv[0] = "reset"; |
1193 | argv[1] = "--merge"; | |
1194 | argv[2] = sha1_to_hex(sha1); | |
1195 | argv[3] = NULL; | |
1196 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
1197 | } | |
1198 | ||
1199 | static int rollback_single_pick(void) | |
1200 | { | |
1201 | unsigned char head_sha1[20]; | |
1202 | ||
f932729c JK |
1203 | if (!file_exists(git_path_cherry_pick_head()) && |
1204 | !file_exists(git_path_revert_head())) | |
043a4492 | 1205 | return error(_("no cherry-pick or revert in progress")); |
7695d118 | 1206 | if (read_ref_full("HEAD", 0, head_sha1, NULL)) |
043a4492 RR |
1207 | return error(_("cannot resolve HEAD")); |
1208 | if (is_null_sha1(head_sha1)) | |
1209 | return error(_("cannot abort from a branch yet to be born")); | |
1210 | return reset_for_rollback(head_sha1); | |
1211 | } | |
1212 | ||
2863584f | 1213 | int sequencer_rollback(struct replay_opts *opts) |
043a4492 | 1214 | { |
043a4492 RR |
1215 | FILE *f; |
1216 | unsigned char sha1[20]; | |
1217 | struct strbuf buf = STRBUF_INIT; | |
1218 | ||
f932729c | 1219 | f = fopen(git_path_head_file(), "r"); |
043a4492 RR |
1220 | if (!f && errno == ENOENT) { |
1221 | /* | |
1222 | * There is no multiple-cherry-pick in progress. | |
1223 | * If CHERRY_PICK_HEAD or REVERT_HEAD indicates | |
1224 | * a single-cherry-pick in progress, abort that. | |
1225 | */ | |
1226 | return rollback_single_pick(); | |
1227 | } | |
1228 | if (!f) | |
f7ed1953 | 1229 | return error_errno(_("cannot open '%s'"), git_path_head_file()); |
8f309aeb | 1230 | if (strbuf_getline_lf(&buf, f)) { |
f7ed1953 | 1231 | error(_("cannot read '%s': %s"), git_path_head_file(), |
f932729c | 1232 | ferror(f) ? strerror(errno) : _("unexpected end of file")); |
043a4492 RR |
1233 | fclose(f); |
1234 | goto fail; | |
1235 | } | |
1236 | fclose(f); | |
1237 | if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') { | |
1238 | error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"), | |
f932729c | 1239 | git_path_head_file()); |
043a4492 RR |
1240 | goto fail; |
1241 | } | |
0f974e21 MG |
1242 | if (is_null_sha1(sha1)) { |
1243 | error(_("cannot abort from a branch yet to be born")); | |
1244 | goto fail; | |
1245 | } | |
1e41229d SB |
1246 | |
1247 | if (!rollback_is_safe()) { | |
1248 | /* Do not error, just do not rollback */ | |
1249 | warning(_("You seem to have moved HEAD. " | |
1250 | "Not rewinding, check your HEAD!")); | |
1251 | } else | |
043a4492 RR |
1252 | if (reset_for_rollback(sha1)) |
1253 | goto fail; | |
043a4492 | 1254 | strbuf_release(&buf); |
2863584f | 1255 | return sequencer_remove_state(opts); |
043a4492 RR |
1256 | fail: |
1257 | strbuf_release(&buf); | |
1258 | return -1; | |
1259 | } | |
1260 | ||
004fefa7 | 1261 | static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) |
043a4492 | 1262 | { |
043a4492 | 1263 | static struct lock_file todo_lock; |
004fefa7 JS |
1264 | const char *todo_path = get_todo_path(opts); |
1265 | int next = todo_list->current, offset, fd; | |
043a4492 | 1266 | |
84583957 JS |
1267 | /* |
1268 | * rebase -i writes "git-rebase-todo" without the currently executing | |
1269 | * command, appending it to "done" instead. | |
1270 | */ | |
1271 | if (is_rebase_i(opts)) | |
1272 | next++; | |
1273 | ||
004fefa7 | 1274 | fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); |
221675de | 1275 | if (fd < 0) |
93b3df6f | 1276 | return error_errno(_("could not lock '%s'"), todo_path); |
004fefa7 JS |
1277 | offset = next < todo_list->nr ? |
1278 | todo_list->items[next].offset_in_buf : todo_list->buf.len; | |
1279 | if (write_in_full(fd, todo_list->buf.buf + offset, | |
1280 | todo_list->buf.len - offset) < 0) | |
93b3df6f | 1281 | return error_errno(_("could not write to '%s'"), todo_path); |
004fefa7 | 1282 | if (commit_lock_file(&todo_lock) < 0) |
93b3df6f | 1283 | return error(_("failed to finalize '%s'."), todo_path); |
221675de | 1284 | return 0; |
043a4492 RR |
1285 | } |
1286 | ||
88d5a271 | 1287 | static int save_opts(struct replay_opts *opts) |
043a4492 | 1288 | { |
f932729c | 1289 | const char *opts_file = git_path_opts_file(); |
88d5a271 | 1290 | int res = 0; |
043a4492 RR |
1291 | |
1292 | if (opts->no_commit) | |
88d5a271 | 1293 | res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true"); |
043a4492 | 1294 | if (opts->edit) |
88d5a271 | 1295 | res |= git_config_set_in_file_gently(opts_file, "options.edit", "true"); |
043a4492 | 1296 | if (opts->signoff) |
88d5a271 | 1297 | res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true"); |
043a4492 | 1298 | if (opts->record_origin) |
88d5a271 | 1299 | res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true"); |
043a4492 | 1300 | if (opts->allow_ff) |
88d5a271 | 1301 | res |= git_config_set_in_file_gently(opts_file, "options.allow-ff", "true"); |
043a4492 RR |
1302 | if (opts->mainline) { |
1303 | struct strbuf buf = STRBUF_INIT; | |
1304 | strbuf_addf(&buf, "%d", opts->mainline); | |
88d5a271 | 1305 | res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf); |
043a4492 RR |
1306 | strbuf_release(&buf); |
1307 | } | |
1308 | if (opts->strategy) | |
88d5a271 | 1309 | res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy); |
3253553e | 1310 | if (opts->gpg_sign) |
88d5a271 | 1311 | res |= git_config_set_in_file_gently(opts_file, "options.gpg-sign", opts->gpg_sign); |
043a4492 RR |
1312 | if (opts->xopts) { |
1313 | int i; | |
1314 | for (i = 0; i < opts->xopts_nr; i++) | |
88d5a271 | 1315 | res |= git_config_set_multivar_in_file_gently(opts_file, |
043a4492 RR |
1316 | "options.strategy-option", |
1317 | opts->xopts[i], "^$", 0); | |
1318 | } | |
88d5a271 | 1319 | return res; |
043a4492 RR |
1320 | } |
1321 | ||
56dc3ab0 JS |
1322 | static int make_patch(struct commit *commit, struct replay_opts *opts) |
1323 | { | |
1324 | struct strbuf buf = STRBUF_INIT; | |
1325 | struct rev_info log_tree_opt; | |
1326 | const char *subject, *p; | |
1327 | int res = 0; | |
1328 | ||
1329 | p = short_commit_name(commit); | |
1330 | if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0) | |
1331 | return -1; | |
1332 | ||
1333 | strbuf_addf(&buf, "%s/patch", get_dir(opts)); | |
1334 | memset(&log_tree_opt, 0, sizeof(log_tree_opt)); | |
1335 | init_revisions(&log_tree_opt, NULL); | |
1336 | log_tree_opt.abbrev = 0; | |
1337 | log_tree_opt.diff = 1; | |
1338 | log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH; | |
1339 | log_tree_opt.disable_stdin = 1; | |
1340 | log_tree_opt.no_commit_id = 1; | |
1341 | log_tree_opt.diffopt.file = fopen(buf.buf, "w"); | |
1342 | log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER; | |
1343 | if (!log_tree_opt.diffopt.file) | |
1344 | res |= error_errno(_("could not open '%s'"), buf.buf); | |
1345 | else { | |
1346 | res |= log_tree_commit(&log_tree_opt, commit); | |
1347 | fclose(log_tree_opt.diffopt.file); | |
1348 | } | |
1349 | strbuf_reset(&buf); | |
1350 | ||
1351 | strbuf_addf(&buf, "%s/message", get_dir(opts)); | |
1352 | if (!file_exists(buf.buf)) { | |
1353 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
1354 | find_commit_subject(commit_buffer, &subject); | |
1355 | res |= write_message(subject, strlen(subject), buf.buf, 1); | |
1356 | unuse_commit_buffer(commit, commit_buffer); | |
1357 | } | |
1358 | strbuf_release(&buf); | |
1359 | ||
1360 | return res; | |
1361 | } | |
1362 | ||
1363 | static int intend_to_amend(void) | |
1364 | { | |
1365 | unsigned char head[20]; | |
1366 | char *p; | |
1367 | ||
1368 | if (get_sha1("HEAD", head)) | |
1369 | return error(_("cannot read HEAD")); | |
1370 | ||
1371 | p = sha1_to_hex(head); | |
1372 | return write_message(p, strlen(p), rebase_path_amend(), 1); | |
1373 | } | |
1374 | ||
1375 | static int error_with_patch(struct commit *commit, | |
1376 | const char *subject, int subject_len, | |
1377 | struct replay_opts *opts, int exit_code, int to_amend) | |
1378 | { | |
1379 | if (make_patch(commit, opts)) | |
1380 | return -1; | |
1381 | ||
1382 | if (to_amend) { | |
1383 | if (intend_to_amend()) | |
1384 | return -1; | |
1385 | ||
1386 | fprintf(stderr, "You can amend the commit now, with\n" | |
1387 | "\n" | |
1388 | " git commit --amend %s\n" | |
1389 | "\n" | |
1390 | "Once you are satisfied with your changes, run\n" | |
1391 | "\n" | |
1392 | " git rebase --continue\n", gpg_sign_opt_quoted(opts)); | |
1393 | } else if (exit_code) | |
1394 | fprintf(stderr, "Could not apply %s... %.*s\n", | |
1395 | short_commit_name(commit), subject_len, subject); | |
1396 | ||
1397 | return exit_code; | |
1398 | } | |
1399 | ||
004fefa7 | 1400 | static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) |
043a4492 | 1401 | { |
56dc3ab0 | 1402 | int res = 0; |
043a4492 RR |
1403 | |
1404 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
1405 | if (opts->allow_ff) | |
1406 | assert(!(opts->signoff || opts->no_commit || | |
1407 | opts->record_origin || opts->edit)); | |
0d9c6dc9 JS |
1408 | if (read_and_refresh_cache(opts)) |
1409 | return -1; | |
043a4492 | 1410 | |
004fefa7 JS |
1411 | while (todo_list->current < todo_list->nr) { |
1412 | struct todo_item *item = todo_list->items + todo_list->current; | |
1413 | if (save_todo(todo_list, opts)) | |
221675de | 1414 | return -1; |
56dc3ab0 | 1415 | if (item->command <= TODO_EDIT) { |
25c43667 JS |
1416 | res = do_pick_commit(item->command, item->commit, |
1417 | opts); | |
56dc3ab0 JS |
1418 | if (item->command == TODO_EDIT) { |
1419 | struct commit *commit = item->commit; | |
1420 | if (!res) | |
1421 | warning(_("stopped at %s... %.*s"), | |
1422 | short_commit_name(commit), | |
1423 | item->arg_len, item->arg); | |
1424 | return error_with_patch(commit, | |
1425 | item->arg, item->arg_len, opts, res, | |
1426 | !res); | |
1427 | } | |
1428 | } else if (!is_noop(item->command)) | |
25c43667 JS |
1429 | return error(_("unknown command %d"), item->command); |
1430 | ||
004fefa7 | 1431 | todo_list->current++; |
043a4492 RR |
1432 | if (res) |
1433 | return res; | |
1434 | } | |
1435 | ||
56dc3ab0 JS |
1436 | if (is_rebase_i(opts)) { |
1437 | /* Stopped in the middle, as planned? */ | |
1438 | if (todo_list->current < todo_list->nr) | |
1439 | return 0; | |
1440 | } | |
1441 | ||
043a4492 RR |
1442 | /* |
1443 | * Sequence of picks finished successfully; cleanup by | |
1444 | * removing the .git/sequencer directory | |
1445 | */ | |
2863584f | 1446 | return sequencer_remove_state(opts); |
043a4492 RR |
1447 | } |
1448 | ||
1449 | static int continue_single_pick(void) | |
1450 | { | |
1451 | const char *argv[] = { "commit", NULL }; | |
1452 | ||
f932729c JK |
1453 | if (!file_exists(git_path_cherry_pick_head()) && |
1454 | !file_exists(git_path_revert_head())) | |
043a4492 RR |
1455 | return error(_("no cherry-pick or revert in progress")); |
1456 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
1457 | } | |
1458 | ||
2863584f | 1459 | int sequencer_continue(struct replay_opts *opts) |
043a4492 | 1460 | { |
004fefa7 JS |
1461 | struct todo_list todo_list = TODO_LIST_INIT; |
1462 | int res; | |
043a4492 | 1463 | |
2863584f JS |
1464 | if (read_and_refresh_cache(opts)) |
1465 | return -1; | |
1466 | ||
c0246501 | 1467 | if (!file_exists(get_todo_path(opts))) |
043a4492 | 1468 | return continue_single_pick(); |
004fefa7 | 1469 | if (read_populate_opts(opts)) |
0ae42a03 | 1470 | return -1; |
004fefa7 JS |
1471 | if ((res = read_populate_todo(&todo_list, opts))) |
1472 | goto release_todo_list; | |
043a4492 RR |
1473 | |
1474 | /* Verify that the conflict has been resolved */ | |
f932729c JK |
1475 | if (file_exists(git_path_cherry_pick_head()) || |
1476 | file_exists(git_path_revert_head())) { | |
004fefa7 JS |
1477 | res = continue_single_pick(); |
1478 | if (res) | |
1479 | goto release_todo_list; | |
043a4492 | 1480 | } |
65036021 | 1481 | if (index_differs_from("HEAD", 0, 0)) { |
004fefa7 JS |
1482 | res = error_dirty_index(opts); |
1483 | goto release_todo_list; | |
1484 | } | |
1485 | todo_list.current++; | |
1486 | res = pick_commits(&todo_list, opts); | |
1487 | release_todo_list: | |
1488 | todo_list_release(&todo_list); | |
1489 | return res; | |
043a4492 RR |
1490 | } |
1491 | ||
1492 | static int single_pick(struct commit *cmit, struct replay_opts *opts) | |
1493 | { | |
1494 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
004fefa7 JS |
1495 | return do_pick_commit(opts->action == REPLAY_PICK ? |
1496 | TODO_PICK : TODO_REVERT, cmit, opts); | |
043a4492 RR |
1497 | } |
1498 | ||
1499 | int sequencer_pick_revisions(struct replay_opts *opts) | |
1500 | { | |
004fefa7 | 1501 | struct todo_list todo_list = TODO_LIST_INIT; |
043a4492 | 1502 | unsigned char sha1[20]; |
004fefa7 | 1503 | int i, res; |
043a4492 | 1504 | |
2863584f | 1505 | assert(opts->revs); |
0d9c6dc9 JS |
1506 | if (read_and_refresh_cache(opts)) |
1507 | return -1; | |
043a4492 | 1508 | |
21246dbb MV |
1509 | for (i = 0; i < opts->revs->pending.nr; i++) { |
1510 | unsigned char sha1[20]; | |
1511 | const char *name = opts->revs->pending.objects[i].name; | |
1512 | ||
1513 | /* This happens when using --stdin. */ | |
1514 | if (!strlen(name)) | |
1515 | continue; | |
1516 | ||
1517 | if (!get_sha1(name, sha1)) { | |
7c0b0d8d JH |
1518 | if (!lookup_commit_reference_gently(sha1, 1)) { |
1519 | enum object_type type = sha1_object_info(sha1, NULL); | |
b9b946d4 JS |
1520 | return error(_("%s: can't cherry-pick a %s"), |
1521 | name, typename(type)); | |
7c0b0d8d | 1522 | } |
21246dbb | 1523 | } else |
b9b946d4 | 1524 | return error(_("%s: bad revision"), name); |
21246dbb MV |
1525 | } |
1526 | ||
043a4492 RR |
1527 | /* |
1528 | * If we were called as "git cherry-pick <commit>", just | |
1529 | * cherry-pick/revert it, set CHERRY_PICK_HEAD / | |
1530 | * REVERT_HEAD, and don't touch the sequencer state. | |
1531 | * This means it is possible to cherry-pick in the middle | |
1532 | * of a cherry-pick sequence. | |
1533 | */ | |
1534 | if (opts->revs->cmdline.nr == 1 && | |
1535 | opts->revs->cmdline.rev->whence == REV_CMD_REV && | |
1536 | opts->revs->no_walk && | |
1537 | !opts->revs->cmdline.rev->flags) { | |
1538 | struct commit *cmit; | |
1539 | if (prepare_revision_walk(opts->revs)) | |
b9b946d4 | 1540 | return error(_("revision walk setup failed")); |
043a4492 RR |
1541 | cmit = get_revision(opts->revs); |
1542 | if (!cmit || get_revision(opts->revs)) | |
b9b946d4 | 1543 | return error("BUG: expected exactly one commit from walk"); |
043a4492 RR |
1544 | return single_pick(cmit, opts); |
1545 | } | |
1546 | ||
1547 | /* | |
1548 | * Start a new cherry-pick/ revert sequence; but | |
1549 | * first, make sure that an existing one isn't in | |
1550 | * progress | |
1551 | */ | |
1552 | ||
34b0528b JS |
1553 | if (walk_revs_populate_todo(&todo_list, opts) || |
1554 | create_seq_dir() < 0) | |
043a4492 | 1555 | return -1; |
0f974e21 | 1556 | if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT)) |
93b3df6f | 1557 | return error(_("can't revert as initial commit")); |
311fd397 JS |
1558 | if (save_head(sha1_to_hex(sha1))) |
1559 | return -1; | |
88d5a271 JS |
1560 | if (save_opts(opts)) |
1561 | return -1; | |
1e41229d | 1562 | update_abort_safety_file(); |
004fefa7 JS |
1563 | res = pick_commits(&todo_list, opts); |
1564 | todo_list_release(&todo_list); | |
1565 | return res; | |
043a4492 | 1566 | } |
5ed75e2a | 1567 | |
bab4d109 | 1568 | void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag) |
5ed75e2a | 1569 | { |
bab4d109 | 1570 | unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP; |
5ed75e2a | 1571 | struct strbuf sob = STRBUF_INIT; |
bab4d109 | 1572 | int has_footer; |
5ed75e2a MV |
1573 | |
1574 | strbuf_addstr(&sob, sign_off_header); | |
1575 | strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"), | |
1576 | getenv("GIT_COMMITTER_EMAIL"))); | |
1577 | strbuf_addch(&sob, '\n'); | |
bab4d109 BC |
1578 | |
1579 | /* | |
1580 | * If the whole message buffer is equal to the sob, pretend that we | |
1581 | * found a conforming footer with a matching sob | |
1582 | */ | |
1583 | if (msgbuf->len - ignore_footer == sob.len && | |
1584 | !strncmp(msgbuf->buf, sob.buf, sob.len)) | |
1585 | has_footer = 3; | |
1586 | else | |
1587 | has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer); | |
1588 | ||
33f2f9ab BC |
1589 | if (!has_footer) { |
1590 | const char *append_newlines = NULL; | |
1591 | size_t len = msgbuf->len - ignore_footer; | |
1592 | ||
8c613fd5 BC |
1593 | if (!len) { |
1594 | /* | |
1595 | * The buffer is completely empty. Leave foom for | |
1596 | * the title and body to be filled in by the user. | |
1597 | */ | |
33f2f9ab | 1598 | append_newlines = "\n\n"; |
8c613fd5 BC |
1599 | } else if (msgbuf->buf[len - 1] != '\n') { |
1600 | /* | |
1601 | * Incomplete line. Complete the line and add a | |
1602 | * blank one so that there is an empty line between | |
1603 | * the message body and the sob. | |
1604 | */ | |
1605 | append_newlines = "\n\n"; | |
1606 | } else if (len == 1) { | |
1607 | /* | |
1608 | * Buffer contains a single newline. Add another | |
1609 | * so that we leave room for the title and body. | |
1610 | */ | |
1611 | append_newlines = "\n"; | |
1612 | } else if (msgbuf->buf[len - 2] != '\n') { | |
1613 | /* | |
1614 | * Buffer ends with a single newline. Add another | |
1615 | * so that there is an empty line between the message | |
1616 | * body and the sob. | |
1617 | */ | |
33f2f9ab | 1618 | append_newlines = "\n"; |
8c613fd5 | 1619 | } /* else, the buffer already ends with two newlines. */ |
33f2f9ab BC |
1620 | |
1621 | if (append_newlines) | |
1622 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
1623 | append_newlines, strlen(append_newlines)); | |
5ed75e2a | 1624 | } |
bab4d109 BC |
1625 | |
1626 | if (has_footer != 3 && (!no_dup_sob || has_footer != 2)) | |
1627 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
1628 | sob.buf, sob.len); | |
1629 | ||
5ed75e2a MV |
1630 | strbuf_release(&sob); |
1631 | } |