]>
Commit | Line | Data |
---|---|---|
1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "lockfile.h" | |
4 | #include "dir.h" | |
5 | #include "object-store.h" | |
6 | #include "object.h" | |
7 | #include "commit.h" | |
8 | #include "sequencer.h" | |
9 | #include "tag.h" | |
10 | #include "run-command.h" | |
11 | #include "exec-cmd.h" | |
12 | #include "utf8.h" | |
13 | #include "cache-tree.h" | |
14 | #include "diff.h" | |
15 | #include "revision.h" | |
16 | #include "rerere.h" | |
17 | #include "merge-recursive.h" | |
18 | #include "refs.h" | |
19 | #include "argv-array.h" | |
20 | #include "quote.h" | |
21 | #include "trailer.h" | |
22 | #include "log-tree.h" | |
23 | #include "wt-status.h" | |
24 | #include "hashmap.h" | |
25 | #include "notes-utils.h" | |
26 | #include "sigchain.h" | |
27 | #include "unpack-trees.h" | |
28 | #include "worktree.h" | |
29 | #include "oidmap.h" | |
30 | #include "oidset.h" | |
31 | #include "commit-slab.h" | |
32 | #include "alias.h" | |
33 | #include "commit-reach.h" | |
34 | #include "rebase-interactive.h" | |
35 | ||
36 | #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" | |
37 | ||
38 | const char sign_off_header[] = "Signed-off-by: "; | |
39 | static const char cherry_picked_prefix[] = "(cherry picked from commit "; | |
40 | ||
41 | GIT_PATH_FUNC(git_path_commit_editmsg, "COMMIT_EDITMSG") | |
42 | ||
43 | GIT_PATH_FUNC(git_path_seq_dir, "sequencer") | |
44 | ||
45 | static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") | |
46 | static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") | |
47 | static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") | |
48 | static GIT_PATH_FUNC(git_path_abort_safety_file, "sequencer/abort-safety") | |
49 | ||
50 | static GIT_PATH_FUNC(rebase_path, "rebase-merge") | |
51 | /* | |
52 | * The file containing rebase commands, comments, and empty lines. | |
53 | * This file is created by "git rebase -i" then edited by the user. As | |
54 | * the lines are processed, they are removed from the front of this | |
55 | * file and written to the tail of 'done'. | |
56 | */ | |
57 | GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") | |
58 | static GIT_PATH_FUNC(rebase_path_todo_backup, | |
59 | "rebase-merge/git-rebase-todo.backup") | |
60 | ||
61 | /* | |
62 | * The rebase command lines that have already been processed. A line | |
63 | * is moved here when it is first handled, before any associated user | |
64 | * actions. | |
65 | */ | |
66 | static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") | |
67 | /* | |
68 | * The file to keep track of how many commands were already processed (e.g. | |
69 | * for the prompt). | |
70 | */ | |
71 | static GIT_PATH_FUNC(rebase_path_msgnum, "rebase-merge/msgnum") | |
72 | /* | |
73 | * The file to keep track of how many commands are to be processed in total | |
74 | * (e.g. for the prompt). | |
75 | */ | |
76 | static GIT_PATH_FUNC(rebase_path_msgtotal, "rebase-merge/end") | |
77 | /* | |
78 | * The commit message that is planned to be used for any changes that | |
79 | * need to be committed following a user interaction. | |
80 | */ | |
81 | static GIT_PATH_FUNC(rebase_path_message, "rebase-merge/message") | |
82 | /* | |
83 | * The file into which is accumulated the suggested commit message for | |
84 | * squash/fixup commands. When the first of a series of squash/fixups | |
85 | * is seen, the file is created and the commit message from the | |
86 | * previous commit and from the first squash/fixup commit are written | |
87 | * to it. The commit message for each subsequent squash/fixup commit | |
88 | * is appended to the file as it is processed. | |
89 | */ | |
90 | static GIT_PATH_FUNC(rebase_path_squash_msg, "rebase-merge/message-squash") | |
91 | /* | |
92 | * If the current series of squash/fixups has not yet included a squash | |
93 | * command, then this file exists and holds the commit message of the | |
94 | * original "pick" commit. (If the series ends without a "squash" | |
95 | * command, then this can be used as the commit message of the combined | |
96 | * commit without opening the editor.) | |
97 | */ | |
98 | static GIT_PATH_FUNC(rebase_path_fixup_msg, "rebase-merge/message-fixup") | |
99 | /* | |
100 | * This file contains the list fixup/squash commands that have been | |
101 | * accumulated into message-fixup or message-squash so far. | |
102 | */ | |
103 | static GIT_PATH_FUNC(rebase_path_current_fixups, "rebase-merge/current-fixups") | |
104 | /* | |
105 | * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and | |
106 | * GIT_AUTHOR_DATE that will be used for the commit that is currently | |
107 | * being rebased. | |
108 | */ | |
109 | static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") | |
110 | /* | |
111 | * When an "edit" rebase command is being processed, the SHA1 of the | |
112 | * commit to be edited is recorded in this file. When "git rebase | |
113 | * --continue" is executed, if there are any staged changes then they | |
114 | * will be amended to the HEAD commit, but only provided the HEAD | |
115 | * commit is still the commit to be edited. When any other rebase | |
116 | * command is processed, this file is deleted. | |
117 | */ | |
118 | static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") | |
119 | /* | |
120 | * When we stop at a given patch via the "edit" command, this file contains | |
121 | * the abbreviated commit name of the corresponding patch. | |
122 | */ | |
123 | static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") | |
124 | /* | |
125 | * For the post-rewrite hook, we make a list of rewritten commits and | |
126 | * their new sha1s. The rewritten-pending list keeps the sha1s of | |
127 | * commits that have been processed, but not committed yet, | |
128 | * e.g. because they are waiting for a 'squash' command. | |
129 | */ | |
130 | static GIT_PATH_FUNC(rebase_path_rewritten_list, "rebase-merge/rewritten-list") | |
131 | static GIT_PATH_FUNC(rebase_path_rewritten_pending, | |
132 | "rebase-merge/rewritten-pending") | |
133 | ||
134 | /* | |
135 | * The path of the file containig the OID of the "squash onto" commit, i.e. | |
136 | * the dummy commit used for `reset [new root]`. | |
137 | */ | |
138 | static GIT_PATH_FUNC(rebase_path_squash_onto, "rebase-merge/squash-onto") | |
139 | ||
140 | /* | |
141 | * The path of the file listing refs that need to be deleted after the rebase | |
142 | * finishes. This is used by the `label` command to record the need for cleanup. | |
143 | */ | |
144 | static GIT_PATH_FUNC(rebase_path_refs_to_delete, "rebase-merge/refs-to-delete") | |
145 | ||
146 | /* | |
147 | * The following files are written by git-rebase just after parsing the | |
148 | * command-line. | |
149 | */ | |
150 | static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") | |
151 | static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") | |
152 | static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") | |
153 | static GIT_PATH_FUNC(rebase_path_signoff, "rebase-merge/signoff") | |
154 | static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") | |
155 | static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") | |
156 | static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") | |
157 | static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy") | |
158 | static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts") | |
159 | static GIT_PATH_FUNC(rebase_path_allow_rerere_autoupdate, "rebase-merge/allow_rerere_autoupdate") | |
160 | static GIT_PATH_FUNC(rebase_path_quiet, "rebase-merge/quiet") | |
161 | ||
162 | static int git_sequencer_config(const char *k, const char *v, void *cb) | |
163 | { | |
164 | struct replay_opts *opts = cb; | |
165 | int status; | |
166 | ||
167 | if (!strcmp(k, "commit.cleanup")) { | |
168 | const char *s; | |
169 | ||
170 | status = git_config_string(&s, k, v); | |
171 | if (status) | |
172 | return status; | |
173 | ||
174 | if (!strcmp(s, "verbatim")) | |
175 | opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE; | |
176 | else if (!strcmp(s, "whitespace")) | |
177 | opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE; | |
178 | else if (!strcmp(s, "strip")) | |
179 | opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_ALL; | |
180 | else if (!strcmp(s, "scissors")) | |
181 | opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE; | |
182 | else | |
183 | warning(_("invalid commit message cleanup mode '%s'"), | |
184 | s); | |
185 | ||
186 | free((char *)s); | |
187 | return status; | |
188 | } | |
189 | ||
190 | if (!strcmp(k, "commit.gpgsign")) { | |
191 | opts->gpg_sign = git_config_bool(k, v) ? xstrdup("") : NULL; | |
192 | return 0; | |
193 | } | |
194 | ||
195 | status = git_gpg_config(k, v, NULL); | |
196 | if (status) | |
197 | return status; | |
198 | ||
199 | return git_diff_basic_config(k, v, NULL); | |
200 | } | |
201 | ||
202 | void sequencer_init_config(struct replay_opts *opts) | |
203 | { | |
204 | opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE; | |
205 | git_config(git_sequencer_config, opts); | |
206 | } | |
207 | ||
208 | static inline int is_rebase_i(const struct replay_opts *opts) | |
209 | { | |
210 | return opts->action == REPLAY_INTERACTIVE_REBASE; | |
211 | } | |
212 | ||
213 | static const char *get_dir(const struct replay_opts *opts) | |
214 | { | |
215 | if (is_rebase_i(opts)) | |
216 | return rebase_path(); | |
217 | return git_path_seq_dir(); | |
218 | } | |
219 | ||
220 | static const char *get_todo_path(const struct replay_opts *opts) | |
221 | { | |
222 | if (is_rebase_i(opts)) | |
223 | return rebase_path_todo(); | |
224 | return git_path_todo_file(); | |
225 | } | |
226 | ||
227 | /* | |
228 | * Returns 0 for non-conforming footer | |
229 | * Returns 1 for conforming footer | |
230 | * Returns 2 when sob exists within conforming footer | |
231 | * Returns 3 when sob exists within conforming footer as last entry | |
232 | */ | |
233 | static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, | |
234 | size_t ignore_footer) | |
235 | { | |
236 | struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT; | |
237 | struct trailer_info info; | |
238 | size_t i; | |
239 | int found_sob = 0, found_sob_last = 0; | |
240 | ||
241 | opts.no_divider = 1; | |
242 | ||
243 | trailer_info_get(&info, sb->buf, &opts); | |
244 | ||
245 | if (info.trailer_start == info.trailer_end) | |
246 | return 0; | |
247 | ||
248 | for (i = 0; i < info.trailer_nr; i++) | |
249 | if (sob && !strncmp(info.trailers[i], sob->buf, sob->len)) { | |
250 | found_sob = 1; | |
251 | if (i == info.trailer_nr - 1) | |
252 | found_sob_last = 1; | |
253 | } | |
254 | ||
255 | trailer_info_release(&info); | |
256 | ||
257 | if (found_sob_last) | |
258 | return 3; | |
259 | if (found_sob) | |
260 | return 2; | |
261 | return 1; | |
262 | } | |
263 | ||
264 | static const char *gpg_sign_opt_quoted(struct replay_opts *opts) | |
265 | { | |
266 | static struct strbuf buf = STRBUF_INIT; | |
267 | ||
268 | strbuf_reset(&buf); | |
269 | if (opts->gpg_sign) | |
270 | sq_quotef(&buf, "-S%s", opts->gpg_sign); | |
271 | return buf.buf; | |
272 | } | |
273 | ||
274 | int sequencer_remove_state(struct replay_opts *opts) | |
275 | { | |
276 | struct strbuf buf = STRBUF_INIT; | |
277 | int i; | |
278 | ||
279 | if (is_rebase_i(opts) && | |
280 | strbuf_read_file(&buf, rebase_path_refs_to_delete(), 0) > 0) { | |
281 | char *p = buf.buf; | |
282 | while (*p) { | |
283 | char *eol = strchr(p, '\n'); | |
284 | if (eol) | |
285 | *eol = '\0'; | |
286 | if (delete_ref("(rebase -i) cleanup", p, NULL, 0) < 0) | |
287 | warning(_("could not delete '%s'"), p); | |
288 | if (!eol) | |
289 | break; | |
290 | p = eol + 1; | |
291 | } | |
292 | } | |
293 | ||
294 | free(opts->gpg_sign); | |
295 | free(opts->strategy); | |
296 | for (i = 0; i < opts->xopts_nr; i++) | |
297 | free(opts->xopts[i]); | |
298 | free(opts->xopts); | |
299 | strbuf_release(&opts->current_fixups); | |
300 | ||
301 | strbuf_reset(&buf); | |
302 | strbuf_addstr(&buf, get_dir(opts)); | |
303 | remove_dir_recursively(&buf, 0); | |
304 | strbuf_release(&buf); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | static const char *action_name(const struct replay_opts *opts) | |
310 | { | |
311 | switch (opts->action) { | |
312 | case REPLAY_REVERT: | |
313 | return N_("revert"); | |
314 | case REPLAY_PICK: | |
315 | return N_("cherry-pick"); | |
316 | case REPLAY_INTERACTIVE_REBASE: | |
317 | return N_("rebase -i"); | |
318 | } | |
319 | die(_("unknown action: %d"), opts->action); | |
320 | } | |
321 | ||
322 | struct commit_message { | |
323 | char *parent_label; | |
324 | char *label; | |
325 | char *subject; | |
326 | const char *message; | |
327 | }; | |
328 | ||
329 | static const char *short_commit_name(struct commit *commit) | |
330 | { | |
331 | return find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV); | |
332 | } | |
333 | ||
334 | static int get_message(struct commit *commit, struct commit_message *out) | |
335 | { | |
336 | const char *abbrev, *subject; | |
337 | int subject_len; | |
338 | ||
339 | out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding()); | |
340 | abbrev = short_commit_name(commit); | |
341 | ||
342 | subject_len = find_commit_subject(out->message, &subject); | |
343 | ||
344 | out->subject = xmemdupz(subject, subject_len); | |
345 | out->label = xstrfmt("%s... %s", abbrev, out->subject); | |
346 | out->parent_label = xstrfmt("parent of %s", out->label); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | static void free_message(struct commit *commit, struct commit_message *msg) | |
352 | { | |
353 | free(msg->parent_label); | |
354 | free(msg->label); | |
355 | free(msg->subject); | |
356 | unuse_commit_buffer(commit, msg->message); | |
357 | } | |
358 | ||
359 | static void print_advice(struct repository *r, int show_hint, | |
360 | struct replay_opts *opts) | |
361 | { | |
362 | char *msg = getenv("GIT_CHERRY_PICK_HELP"); | |
363 | ||
364 | if (msg) { | |
365 | fprintf(stderr, "%s\n", msg); | |
366 | /* | |
367 | * A conflict has occurred but the porcelain | |
368 | * (typically rebase --interactive) wants to take care | |
369 | * of the commit itself so remove CHERRY_PICK_HEAD | |
370 | */ | |
371 | unlink(git_path_cherry_pick_head(r)); | |
372 | return; | |
373 | } | |
374 | ||
375 | if (show_hint) { | |
376 | if (opts->no_commit) | |
377 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
378 | "with 'git add <paths>' or 'git rm <paths>'")); | |
379 | else | |
380 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
381 | "with 'git add <paths>' or 'git rm <paths>'\n" | |
382 | "and commit the result with 'git commit'")); | |
383 | } | |
384 | } | |
385 | ||
386 | int write_message(const void *buf, size_t len, const char *filename, | |
387 | int append_eol) | |
388 | { | |
389 | struct lock_file msg_file = LOCK_INIT; | |
390 | ||
391 | int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0); | |
392 | if (msg_fd < 0) | |
393 | return error_errno(_("could not lock '%s'"), filename); | |
394 | if (write_in_full(msg_fd, buf, len) < 0) { | |
395 | error_errno(_("could not write to '%s'"), filename); | |
396 | rollback_lock_file(&msg_file); | |
397 | return -1; | |
398 | } | |
399 | if (append_eol && write(msg_fd, "\n", 1) < 0) { | |
400 | error_errno(_("could not write eol to '%s'"), filename); | |
401 | rollback_lock_file(&msg_file); | |
402 | return -1; | |
403 | } | |
404 | if (commit_lock_file(&msg_file) < 0) | |
405 | return error(_("failed to finalize '%s'"), filename); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | /* | |
411 | * Reads a file that was presumably written by a shell script, i.e. with an | |
412 | * end-of-line marker that needs to be stripped. | |
413 | * | |
414 | * Note that only the last end-of-line marker is stripped, consistent with the | |
415 | * behavior of "$(cat path)" in a shell script. | |
416 | * | |
417 | * Returns 1 if the file was read, 0 if it could not be read or does not exist. | |
418 | */ | |
419 | static int read_oneliner(struct strbuf *buf, | |
420 | const char *path, int skip_if_empty) | |
421 | { | |
422 | int orig_len = buf->len; | |
423 | ||
424 | if (!file_exists(path)) | |
425 | return 0; | |
426 | ||
427 | if (strbuf_read_file(buf, path, 0) < 0) { | |
428 | warning_errno(_("could not read '%s'"), path); | |
429 | return 0; | |
430 | } | |
431 | ||
432 | if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') { | |
433 | if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r') | |
434 | --buf->len; | |
435 | buf->buf[buf->len] = '\0'; | |
436 | } | |
437 | ||
438 | if (skip_if_empty && buf->len == orig_len) | |
439 | return 0; | |
440 | ||
441 | return 1; | |
442 | } | |
443 | ||
444 | static struct tree *empty_tree(struct repository *r) | |
445 | { | |
446 | return lookup_tree(r, the_hash_algo->empty_tree); | |
447 | } | |
448 | ||
449 | static int error_dirty_index(struct index_state *istate, struct replay_opts *opts) | |
450 | { | |
451 | if (read_index_unmerged(istate)) | |
452 | return error_resolve_conflict(_(action_name(opts))); | |
453 | ||
454 | error(_("your local changes would be overwritten by %s."), | |
455 | _(action_name(opts))); | |
456 | ||
457 | if (advice_commit_before_merge) | |
458 | advise(_("commit your changes or stash them to proceed.")); | |
459 | return -1; | |
460 | } | |
461 | ||
462 | static void update_abort_safety_file(void) | |
463 | { | |
464 | struct object_id head; | |
465 | ||
466 | /* Do nothing on a single-pick */ | |
467 | if (!file_exists(git_path_seq_dir())) | |
468 | return; | |
469 | ||
470 | if (!get_oid("HEAD", &head)) | |
471 | write_file(git_path_abort_safety_file(), "%s", oid_to_hex(&head)); | |
472 | else | |
473 | write_file(git_path_abort_safety_file(), "%s", ""); | |
474 | } | |
475 | ||
476 | static int fast_forward_to(struct repository *r, | |
477 | const struct object_id *to, | |
478 | const struct object_id *from, | |
479 | int unborn, | |
480 | struct replay_opts *opts) | |
481 | { | |
482 | struct ref_transaction *transaction; | |
483 | struct strbuf sb = STRBUF_INIT; | |
484 | struct strbuf err = STRBUF_INIT; | |
485 | ||
486 | read_index(r->index); | |
487 | if (checkout_fast_forward(r, from, to, 1)) | |
488 | return -1; /* the callee should have complained already */ | |
489 | ||
490 | strbuf_addf(&sb, _("%s: fast-forward"), _(action_name(opts))); | |
491 | ||
492 | transaction = ref_transaction_begin(&err); | |
493 | if (!transaction || | |
494 | ref_transaction_update(transaction, "HEAD", | |
495 | to, unborn && !is_rebase_i(opts) ? | |
496 | &null_oid : from, | |
497 | 0, sb.buf, &err) || | |
498 | ref_transaction_commit(transaction, &err)) { | |
499 | ref_transaction_free(transaction); | |
500 | error("%s", err.buf); | |
501 | strbuf_release(&sb); | |
502 | strbuf_release(&err); | |
503 | return -1; | |
504 | } | |
505 | ||
506 | strbuf_release(&sb); | |
507 | strbuf_release(&err); | |
508 | ref_transaction_free(transaction); | |
509 | update_abort_safety_file(); | |
510 | return 0; | |
511 | } | |
512 | ||
513 | void append_conflicts_hint(struct index_state *istate, | |
514 | struct strbuf *msgbuf) | |
515 | { | |
516 | int i; | |
517 | ||
518 | strbuf_addch(msgbuf, '\n'); | |
519 | strbuf_commented_addf(msgbuf, "Conflicts:\n"); | |
520 | for (i = 0; i < istate->cache_nr;) { | |
521 | const struct cache_entry *ce = istate->cache[i++]; | |
522 | if (ce_stage(ce)) { | |
523 | strbuf_commented_addf(msgbuf, "\t%s\n", ce->name); | |
524 | while (i < istate->cache_nr && | |
525 | !strcmp(ce->name, istate->cache[i]->name)) | |
526 | i++; | |
527 | } | |
528 | } | |
529 | } | |
530 | ||
531 | static int do_recursive_merge(struct repository *r, | |
532 | struct commit *base, struct commit *next, | |
533 | const char *base_label, const char *next_label, | |
534 | struct object_id *head, struct strbuf *msgbuf, | |
535 | struct replay_opts *opts) | |
536 | { | |
537 | struct merge_options o; | |
538 | struct tree *result, *next_tree, *base_tree, *head_tree; | |
539 | int clean; | |
540 | char **xopt; | |
541 | struct lock_file index_lock = LOCK_INIT; | |
542 | ||
543 | if (hold_locked_index(&index_lock, LOCK_REPORT_ON_ERROR) < 0) | |
544 | return -1; | |
545 | ||
546 | read_index(r->index); | |
547 | ||
548 | init_merge_options(&o); | |
549 | o.ancestor = base ? base_label : "(empty tree)"; | |
550 | o.branch1 = "HEAD"; | |
551 | o.branch2 = next ? next_label : "(empty tree)"; | |
552 | if (is_rebase_i(opts)) | |
553 | o.buffer_output = 2; | |
554 | o.show_rename_progress = 1; | |
555 | ||
556 | head_tree = parse_tree_indirect(head); | |
557 | next_tree = next ? get_commit_tree(next) : empty_tree(r); | |
558 | base_tree = base ? get_commit_tree(base) : empty_tree(r); | |
559 | ||
560 | for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++) | |
561 | parse_merge_opt(&o, *xopt); | |
562 | ||
563 | clean = merge_trees(&o, | |
564 | head_tree, | |
565 | next_tree, base_tree, &result); | |
566 | if (is_rebase_i(opts) && clean <= 0) | |
567 | fputs(o.obuf.buf, stdout); | |
568 | strbuf_release(&o.obuf); | |
569 | diff_warn_rename_limit("merge.renamelimit", o.needed_rename_limit, 0); | |
570 | if (clean < 0) { | |
571 | rollback_lock_file(&index_lock); | |
572 | return clean; | |
573 | } | |
574 | ||
575 | if (write_locked_index(r->index, &index_lock, | |
576 | COMMIT_LOCK | SKIP_IF_UNCHANGED)) | |
577 | /* | |
578 | * TRANSLATORS: %s will be "revert", "cherry-pick" or | |
579 | * "rebase -i". | |
580 | */ | |
581 | return error(_("%s: Unable to write new index file"), | |
582 | _(action_name(opts))); | |
583 | ||
584 | if (!clean) | |
585 | append_conflicts_hint(r->index, msgbuf); | |
586 | ||
587 | return !clean; | |
588 | } | |
589 | ||
590 | static struct object_id *get_cache_tree_oid(struct index_state *istate) | |
591 | { | |
592 | if (!istate->cache_tree) | |
593 | istate->cache_tree = cache_tree(); | |
594 | ||
595 | if (!cache_tree_fully_valid(istate->cache_tree)) | |
596 | if (cache_tree_update(istate, 0)) { | |
597 | error(_("unable to update cache tree")); | |
598 | return NULL; | |
599 | } | |
600 | ||
601 | return &istate->cache_tree->oid; | |
602 | } | |
603 | ||
604 | static int is_index_unchanged(struct repository *r) | |
605 | { | |
606 | struct object_id head_oid, *cache_tree_oid; | |
607 | struct commit *head_commit; | |
608 | struct index_state *istate = r->index; | |
609 | ||
610 | if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL)) | |
611 | return error(_("could not resolve HEAD commit")); | |
612 | ||
613 | head_commit = lookup_commit(r, &head_oid); | |
614 | ||
615 | /* | |
616 | * If head_commit is NULL, check_commit, called from | |
617 | * lookup_commit, would have indicated that head_commit is not | |
618 | * a commit object already. parse_commit() will return failure | |
619 | * without further complaints in such a case. Otherwise, if | |
620 | * the commit is invalid, parse_commit() will complain. So | |
621 | * there is nothing for us to say here. Just return failure. | |
622 | */ | |
623 | if (parse_commit(head_commit)) | |
624 | return -1; | |
625 | ||
626 | if (!(cache_tree_oid = get_cache_tree_oid(istate))) | |
627 | return -1; | |
628 | ||
629 | return oideq(cache_tree_oid, get_commit_tree_oid(head_commit)); | |
630 | } | |
631 | ||
632 | static int write_author_script(const char *message) | |
633 | { | |
634 | struct strbuf buf = STRBUF_INIT; | |
635 | const char *eol; | |
636 | int res; | |
637 | ||
638 | for (;;) | |
639 | if (!*message || starts_with(message, "\n")) { | |
640 | missing_author: | |
641 | /* Missing 'author' line? */ | |
642 | unlink(rebase_path_author_script()); | |
643 | return 0; | |
644 | } else if (skip_prefix(message, "author ", &message)) | |
645 | break; | |
646 | else if ((eol = strchr(message, '\n'))) | |
647 | message = eol + 1; | |
648 | else | |
649 | goto missing_author; | |
650 | ||
651 | strbuf_addstr(&buf, "GIT_AUTHOR_NAME='"); | |
652 | while (*message && *message != '\n' && *message != '\r') | |
653 | if (skip_prefix(message, " <", &message)) | |
654 | break; | |
655 | else if (*message != '\'') | |
656 | strbuf_addch(&buf, *(message++)); | |
657 | else | |
658 | strbuf_addf(&buf, "'\\%c'", *(message++)); | |
659 | strbuf_addstr(&buf, "'\nGIT_AUTHOR_EMAIL='"); | |
660 | while (*message && *message != '\n' && *message != '\r') | |
661 | if (skip_prefix(message, "> ", &message)) | |
662 | break; | |
663 | else if (*message != '\'') | |
664 | strbuf_addch(&buf, *(message++)); | |
665 | else | |
666 | strbuf_addf(&buf, "'\\%c'", *(message++)); | |
667 | strbuf_addstr(&buf, "'\nGIT_AUTHOR_DATE='@"); | |
668 | while (*message && *message != '\n' && *message != '\r') | |
669 | if (*message != '\'') | |
670 | strbuf_addch(&buf, *(message++)); | |
671 | else | |
672 | strbuf_addf(&buf, "'\\%c'", *(message++)); | |
673 | strbuf_addch(&buf, '\''); | |
674 | res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1); | |
675 | strbuf_release(&buf); | |
676 | return res; | |
677 | } | |
678 | ||
679 | /** | |
680 | * Take a series of KEY='VALUE' lines where VALUE part is | |
681 | * sq-quoted, and append <KEY, VALUE> at the end of the string list | |
682 | */ | |
683 | static int parse_key_value_squoted(char *buf, struct string_list *list) | |
684 | { | |
685 | while (*buf) { | |
686 | struct string_list_item *item; | |
687 | char *np; | |
688 | char *cp = strchr(buf, '='); | |
689 | if (!cp) { | |
690 | np = strchrnul(buf, '\n'); | |
691 | return error(_("no key present in '%.*s'"), | |
692 | (int) (np - buf), buf); | |
693 | } | |
694 | np = strchrnul(cp, '\n'); | |
695 | *cp++ = '\0'; | |
696 | item = string_list_append(list, buf); | |
697 | ||
698 | buf = np + (*np == '\n'); | |
699 | *np = '\0'; | |
700 | cp = sq_dequote(cp); | |
701 | if (!cp) | |
702 | return error(_("unable to dequote value of '%s'"), | |
703 | item->string); | |
704 | item->util = xstrdup(cp); | |
705 | } | |
706 | return 0; | |
707 | } | |
708 | ||
709 | /** | |
710 | * Reads and parses the state directory's "author-script" file, and sets name, | |
711 | * email and date accordingly. | |
712 | * Returns 0 on success, -1 if the file could not be parsed. | |
713 | * | |
714 | * The author script is of the format: | |
715 | * | |
716 | * GIT_AUTHOR_NAME='$author_name' | |
717 | * GIT_AUTHOR_EMAIL='$author_email' | |
718 | * GIT_AUTHOR_DATE='$author_date' | |
719 | * | |
720 | * where $author_name, $author_email and $author_date are quoted. We are strict | |
721 | * with our parsing, as the file was meant to be eval'd in the old | |
722 | * git-am.sh/git-rebase--interactive.sh scripts, and thus if the file differs | |
723 | * from what this function expects, it is better to bail out than to do | |
724 | * something that the user does not expect. | |
725 | */ | |
726 | int read_author_script(const char *path, char **name, char **email, char **date, | |
727 | int allow_missing) | |
728 | { | |
729 | struct strbuf buf = STRBUF_INIT; | |
730 | struct string_list kv = STRING_LIST_INIT_DUP; | |
731 | int retval = -1; /* assume failure */ | |
732 | int i, name_i = -2, email_i = -2, date_i = -2, err = 0; | |
733 | ||
734 | if (strbuf_read_file(&buf, path, 256) <= 0) { | |
735 | strbuf_release(&buf); | |
736 | if (errno == ENOENT && allow_missing) | |
737 | return 0; | |
738 | else | |
739 | return error_errno(_("could not open '%s' for reading"), | |
740 | path); | |
741 | } | |
742 | ||
743 | if (parse_key_value_squoted(buf.buf, &kv)) | |
744 | goto finish; | |
745 | ||
746 | for (i = 0; i < kv.nr; i++) { | |
747 | if (!strcmp(kv.items[i].string, "GIT_AUTHOR_NAME")) { | |
748 | if (name_i != -2) | |
749 | name_i = error(_("'GIT_AUTHOR_NAME' already given")); | |
750 | else | |
751 | name_i = i; | |
752 | } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_EMAIL")) { | |
753 | if (email_i != -2) | |
754 | email_i = error(_("'GIT_AUTHOR_EMAIL' already given")); | |
755 | else | |
756 | email_i = i; | |
757 | } else if (!strcmp(kv.items[i].string, "GIT_AUTHOR_DATE")) { | |
758 | if (date_i != -2) | |
759 | date_i = error(_("'GIT_AUTHOR_DATE' already given")); | |
760 | else | |
761 | date_i = i; | |
762 | } else { | |
763 | err = error(_("unknown variable '%s'"), | |
764 | kv.items[i].string); | |
765 | } | |
766 | } | |
767 | if (name_i == -2) | |
768 | error(_("missing 'GIT_AUTHOR_NAME'")); | |
769 | if (email_i == -2) | |
770 | error(_("missing 'GIT_AUTHOR_EMAIL'")); | |
771 | if (date_i == -2) | |
772 | error(_("missing 'GIT_AUTHOR_DATE'")); | |
773 | if (date_i < 0 || email_i < 0 || date_i < 0 || err) | |
774 | goto finish; | |
775 | *name = kv.items[name_i].util; | |
776 | *email = kv.items[email_i].util; | |
777 | *date = kv.items[date_i].util; | |
778 | retval = 0; | |
779 | finish: | |
780 | string_list_clear(&kv, !!retval); | |
781 | strbuf_release(&buf); | |
782 | return retval; | |
783 | } | |
784 | ||
785 | /* | |
786 | * Read a GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL AND GIT_AUTHOR_DATE from a | |
787 | * file with shell quoting into struct argv_array. Returns -1 on | |
788 | * error, 0 otherwise. | |
789 | */ | |
790 | static int read_env_script(struct argv_array *env) | |
791 | { | |
792 | char *name, *email, *date; | |
793 | ||
794 | if (read_author_script(rebase_path_author_script(), | |
795 | &name, &email, &date, 0)) | |
796 | return -1; | |
797 | ||
798 | argv_array_pushf(env, "GIT_AUTHOR_NAME=%s", name); | |
799 | argv_array_pushf(env, "GIT_AUTHOR_EMAIL=%s", email); | |
800 | argv_array_pushf(env, "GIT_AUTHOR_DATE=%s", date); | |
801 | free(name); | |
802 | free(email); | |
803 | free(date); | |
804 | ||
805 | return 0; | |
806 | } | |
807 | ||
808 | static char *get_author(const char *message) | |
809 | { | |
810 | size_t len; | |
811 | const char *a; | |
812 | ||
813 | a = find_commit_header(message, "author", &len); | |
814 | if (a) | |
815 | return xmemdupz(a, len); | |
816 | ||
817 | return NULL; | |
818 | } | |
819 | ||
820 | /* Read author-script and return an ident line (author <email> timestamp) */ | |
821 | static const char *read_author_ident(struct strbuf *buf) | |
822 | { | |
823 | struct strbuf out = STRBUF_INIT; | |
824 | char *name, *email, *date; | |
825 | ||
826 | if (read_author_script(rebase_path_author_script(), | |
827 | &name, &email, &date, 0)) | |
828 | return NULL; | |
829 | ||
830 | /* validate date since fmt_ident() will die() on bad value */ | |
831 | if (parse_date(date, &out)){ | |
832 | warning(_("invalid date format '%s' in '%s'"), | |
833 | date, rebase_path_author_script()); | |
834 | strbuf_release(&out); | |
835 | return NULL; | |
836 | } | |
837 | ||
838 | strbuf_reset(&out); | |
839 | strbuf_addstr(&out, fmt_ident(name, email, date, 0)); | |
840 | strbuf_swap(buf, &out); | |
841 | strbuf_release(&out); | |
842 | free(name); | |
843 | free(email); | |
844 | free(date); | |
845 | return buf->buf; | |
846 | } | |
847 | ||
848 | static const char staged_changes_advice[] = | |
849 | N_("you have staged changes in your working tree\n" | |
850 | "If these changes are meant to be squashed into the previous commit, run:\n" | |
851 | "\n" | |
852 | " git commit --amend %s\n" | |
853 | "\n" | |
854 | "If they are meant to go into a new commit, run:\n" | |
855 | "\n" | |
856 | " git commit %s\n" | |
857 | "\n" | |
858 | "In both cases, once you're done, continue with:\n" | |
859 | "\n" | |
860 | " git rebase --continue\n"); | |
861 | ||
862 | #define ALLOW_EMPTY (1<<0) | |
863 | #define EDIT_MSG (1<<1) | |
864 | #define AMEND_MSG (1<<2) | |
865 | #define CLEANUP_MSG (1<<3) | |
866 | #define VERIFY_MSG (1<<4) | |
867 | #define CREATE_ROOT_COMMIT (1<<5) | |
868 | ||
869 | static int run_command_silent_on_success(struct child_process *cmd) | |
870 | { | |
871 | struct strbuf buf = STRBUF_INIT; | |
872 | int rc; | |
873 | ||
874 | cmd->stdout_to_stderr = 1; | |
875 | rc = pipe_command(cmd, | |
876 | NULL, 0, | |
877 | NULL, 0, | |
878 | &buf, 0); | |
879 | ||
880 | if (rc) | |
881 | fputs(buf.buf, stderr); | |
882 | strbuf_release(&buf); | |
883 | return rc; | |
884 | } | |
885 | ||
886 | /* | |
887 | * If we are cherry-pick, and if the merge did not result in | |
888 | * hand-editing, we will hit this commit and inherit the original | |
889 | * author date and name. | |
890 | * | |
891 | * If we are revert, or if our cherry-pick results in a hand merge, | |
892 | * we had better say that the current user is responsible for that. | |
893 | * | |
894 | * An exception is when run_git_commit() is called during an | |
895 | * interactive rebase: in that case, we will want to retain the | |
896 | * author metadata. | |
897 | */ | |
898 | static int run_git_commit(struct repository *r, | |
899 | const char *defmsg, | |
900 | struct replay_opts *opts, | |
901 | unsigned int flags) | |
902 | { | |
903 | struct child_process cmd = CHILD_PROCESS_INIT; | |
904 | const char *value; | |
905 | ||
906 | if ((flags & CREATE_ROOT_COMMIT) && !(flags & AMEND_MSG)) { | |
907 | struct strbuf msg = STRBUF_INIT, script = STRBUF_INIT; | |
908 | const char *author = NULL; | |
909 | struct object_id root_commit, *cache_tree_oid; | |
910 | int res = 0; | |
911 | ||
912 | if (is_rebase_i(opts)) { | |
913 | author = read_author_ident(&script); | |
914 | if (!author) { | |
915 | strbuf_release(&script); | |
916 | return -1; | |
917 | } | |
918 | } | |
919 | ||
920 | if (!defmsg) | |
921 | BUG("root commit without message"); | |
922 | ||
923 | if (!(cache_tree_oid = get_cache_tree_oid(r->index))) | |
924 | res = -1; | |
925 | ||
926 | if (!res) | |
927 | res = strbuf_read_file(&msg, defmsg, 0); | |
928 | ||
929 | if (res <= 0) | |
930 | res = error_errno(_("could not read '%s'"), defmsg); | |
931 | else | |
932 | res = commit_tree(msg.buf, msg.len, cache_tree_oid, | |
933 | NULL, &root_commit, author, | |
934 | opts->gpg_sign); | |
935 | ||
936 | strbuf_release(&msg); | |
937 | strbuf_release(&script); | |
938 | if (!res) { | |
939 | update_ref(NULL, "CHERRY_PICK_HEAD", &root_commit, NULL, | |
940 | REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR); | |
941 | res = update_ref(NULL, "HEAD", &root_commit, NULL, 0, | |
942 | UPDATE_REFS_MSG_ON_ERR); | |
943 | } | |
944 | return res < 0 ? error(_("writing root commit")) : 0; | |
945 | } | |
946 | ||
947 | cmd.git_cmd = 1; | |
948 | ||
949 | if (is_rebase_i(opts) && read_env_script(&cmd.env_array)) { | |
950 | const char *gpg_opt = gpg_sign_opt_quoted(opts); | |
951 | ||
952 | return error(_(staged_changes_advice), | |
953 | gpg_opt, gpg_opt); | |
954 | } | |
955 | ||
956 | argv_array_push(&cmd.args, "commit"); | |
957 | ||
958 | if (!(flags & VERIFY_MSG)) | |
959 | argv_array_push(&cmd.args, "-n"); | |
960 | if ((flags & AMEND_MSG)) | |
961 | argv_array_push(&cmd.args, "--amend"); | |
962 | if (opts->gpg_sign) | |
963 | argv_array_pushf(&cmd.args, "-S%s", opts->gpg_sign); | |
964 | if (defmsg) | |
965 | argv_array_pushl(&cmd.args, "-F", defmsg, NULL); | |
966 | else if (!(flags & EDIT_MSG)) | |
967 | argv_array_pushl(&cmd.args, "-C", "HEAD", NULL); | |
968 | if ((flags & CLEANUP_MSG)) | |
969 | argv_array_push(&cmd.args, "--cleanup=strip"); | |
970 | if ((flags & EDIT_MSG)) | |
971 | argv_array_push(&cmd.args, "-e"); | |
972 | else if (!(flags & CLEANUP_MSG) && | |
973 | !opts->signoff && !opts->record_origin && | |
974 | git_config_get_value("commit.cleanup", &value)) | |
975 | argv_array_push(&cmd.args, "--cleanup=verbatim"); | |
976 | ||
977 | if ((flags & ALLOW_EMPTY)) | |
978 | argv_array_push(&cmd.args, "--allow-empty"); | |
979 | ||
980 | if (!(flags & EDIT_MSG)) | |
981 | argv_array_push(&cmd.args, "--allow-empty-message"); | |
982 | ||
983 | if (is_rebase_i(opts) && !(flags & EDIT_MSG)) | |
984 | return run_command_silent_on_success(&cmd); | |
985 | else | |
986 | return run_command(&cmd); | |
987 | } | |
988 | ||
989 | static int rest_is_empty(const struct strbuf *sb, int start) | |
990 | { | |
991 | int i, eol; | |
992 | const char *nl; | |
993 | ||
994 | /* Check if the rest is just whitespace and Signed-off-by's. */ | |
995 | for (i = start; i < sb->len; i++) { | |
996 | nl = memchr(sb->buf + i, '\n', sb->len - i); | |
997 | if (nl) | |
998 | eol = nl - sb->buf; | |
999 | else | |
1000 | eol = sb->len; | |
1001 | ||
1002 | if (strlen(sign_off_header) <= eol - i && | |
1003 | starts_with(sb->buf + i, sign_off_header)) { | |
1004 | i = eol; | |
1005 | continue; | |
1006 | } | |
1007 | while (i < eol) | |
1008 | if (!isspace(sb->buf[i++])) | |
1009 | return 0; | |
1010 | } | |
1011 | ||
1012 | return 1; | |
1013 | } | |
1014 | ||
1015 | /* | |
1016 | * Find out if the message in the strbuf contains only whitespace and | |
1017 | * Signed-off-by lines. | |
1018 | */ | |
1019 | int message_is_empty(const struct strbuf *sb, | |
1020 | enum commit_msg_cleanup_mode cleanup_mode) | |
1021 | { | |
1022 | if (cleanup_mode == COMMIT_MSG_CLEANUP_NONE && sb->len) | |
1023 | return 0; | |
1024 | return rest_is_empty(sb, 0); | |
1025 | } | |
1026 | ||
1027 | /* | |
1028 | * See if the user edited the message in the editor or left what | |
1029 | * was in the template intact | |
1030 | */ | |
1031 | int template_untouched(const struct strbuf *sb, const char *template_file, | |
1032 | enum commit_msg_cleanup_mode cleanup_mode) | |
1033 | { | |
1034 | struct strbuf tmpl = STRBUF_INIT; | |
1035 | const char *start; | |
1036 | ||
1037 | if (cleanup_mode == COMMIT_MSG_CLEANUP_NONE && sb->len) | |
1038 | return 0; | |
1039 | ||
1040 | if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0) | |
1041 | return 0; | |
1042 | ||
1043 | strbuf_stripspace(&tmpl, cleanup_mode == COMMIT_MSG_CLEANUP_ALL); | |
1044 | if (!skip_prefix(sb->buf, tmpl.buf, &start)) | |
1045 | start = sb->buf; | |
1046 | strbuf_release(&tmpl); | |
1047 | return rest_is_empty(sb, start - sb->buf); | |
1048 | } | |
1049 | ||
1050 | int update_head_with_reflog(const struct commit *old_head, | |
1051 | const struct object_id *new_head, | |
1052 | const char *action, const struct strbuf *msg, | |
1053 | struct strbuf *err) | |
1054 | { | |
1055 | struct ref_transaction *transaction; | |
1056 | struct strbuf sb = STRBUF_INIT; | |
1057 | const char *nl; | |
1058 | int ret = 0; | |
1059 | ||
1060 | if (action) { | |
1061 | strbuf_addstr(&sb, action); | |
1062 | strbuf_addstr(&sb, ": "); | |
1063 | } | |
1064 | ||
1065 | nl = strchr(msg->buf, '\n'); | |
1066 | if (nl) { | |
1067 | strbuf_add(&sb, msg->buf, nl + 1 - msg->buf); | |
1068 | } else { | |
1069 | strbuf_addbuf(&sb, msg); | |
1070 | strbuf_addch(&sb, '\n'); | |
1071 | } | |
1072 | ||
1073 | transaction = ref_transaction_begin(err); | |
1074 | if (!transaction || | |
1075 | ref_transaction_update(transaction, "HEAD", new_head, | |
1076 | old_head ? &old_head->object.oid : &null_oid, | |
1077 | 0, sb.buf, err) || | |
1078 | ref_transaction_commit(transaction, err)) { | |
1079 | ret = -1; | |
1080 | } | |
1081 | ref_transaction_free(transaction); | |
1082 | strbuf_release(&sb); | |
1083 | ||
1084 | return ret; | |
1085 | } | |
1086 | ||
1087 | static int run_rewrite_hook(const struct object_id *oldoid, | |
1088 | const struct object_id *newoid) | |
1089 | { | |
1090 | struct child_process proc = CHILD_PROCESS_INIT; | |
1091 | const char *argv[3]; | |
1092 | int code; | |
1093 | struct strbuf sb = STRBUF_INIT; | |
1094 | ||
1095 | argv[0] = find_hook("post-rewrite"); | |
1096 | if (!argv[0]) | |
1097 | return 0; | |
1098 | ||
1099 | argv[1] = "amend"; | |
1100 | argv[2] = NULL; | |
1101 | ||
1102 | proc.argv = argv; | |
1103 | proc.in = -1; | |
1104 | proc.stdout_to_stderr = 1; | |
1105 | ||
1106 | code = start_command(&proc); | |
1107 | if (code) | |
1108 | return code; | |
1109 | strbuf_addf(&sb, "%s %s\n", oid_to_hex(oldoid), oid_to_hex(newoid)); | |
1110 | sigchain_push(SIGPIPE, SIG_IGN); | |
1111 | write_in_full(proc.in, sb.buf, sb.len); | |
1112 | close(proc.in); | |
1113 | strbuf_release(&sb); | |
1114 | sigchain_pop(SIGPIPE); | |
1115 | return finish_command(&proc); | |
1116 | } | |
1117 | ||
1118 | void commit_post_rewrite(const struct commit *old_head, | |
1119 | const struct object_id *new_head) | |
1120 | { | |
1121 | struct notes_rewrite_cfg *cfg; | |
1122 | ||
1123 | cfg = init_copy_notes_for_rewrite("amend"); | |
1124 | if (cfg) { | |
1125 | /* we are amending, so old_head is not NULL */ | |
1126 | copy_note_for_rewrite(cfg, &old_head->object.oid, new_head); | |
1127 | finish_copy_notes_for_rewrite(cfg, "Notes added by 'git commit --amend'"); | |
1128 | } | |
1129 | run_rewrite_hook(&old_head->object.oid, new_head); | |
1130 | } | |
1131 | ||
1132 | static int run_prepare_commit_msg_hook(struct repository *r, | |
1133 | struct strbuf *msg, | |
1134 | const char *commit) | |
1135 | { | |
1136 | struct argv_array hook_env = ARGV_ARRAY_INIT; | |
1137 | int ret; | |
1138 | const char *name; | |
1139 | ||
1140 | name = git_path_commit_editmsg(); | |
1141 | if (write_message(msg->buf, msg->len, name, 0)) | |
1142 | return -1; | |
1143 | ||
1144 | argv_array_pushf(&hook_env, "GIT_INDEX_FILE=%s", r->index_file); | |
1145 | argv_array_push(&hook_env, "GIT_EDITOR=:"); | |
1146 | if (commit) | |
1147 | ret = run_hook_le(hook_env.argv, "prepare-commit-msg", name, | |
1148 | "commit", commit, NULL); | |
1149 | else | |
1150 | ret = run_hook_le(hook_env.argv, "prepare-commit-msg", name, | |
1151 | "message", NULL); | |
1152 | if (ret) | |
1153 | ret = error(_("'prepare-commit-msg' hook failed")); | |
1154 | argv_array_clear(&hook_env); | |
1155 | ||
1156 | return ret; | |
1157 | } | |
1158 | ||
1159 | static const char implicit_ident_advice_noconfig[] = | |
1160 | N_("Your name and email address were configured automatically based\n" | |
1161 | "on your username and hostname. Please check that they are accurate.\n" | |
1162 | "You can suppress this message by setting them explicitly. Run the\n" | |
1163 | "following command and follow the instructions in your editor to edit\n" | |
1164 | "your configuration file:\n" | |
1165 | "\n" | |
1166 | " git config --global --edit\n" | |
1167 | "\n" | |
1168 | "After doing this, you may fix the identity used for this commit with:\n" | |
1169 | "\n" | |
1170 | " git commit --amend --reset-author\n"); | |
1171 | ||
1172 | static const char implicit_ident_advice_config[] = | |
1173 | N_("Your name and email address were configured automatically based\n" | |
1174 | "on your username and hostname. Please check that they are accurate.\n" | |
1175 | "You can suppress this message by setting them explicitly:\n" | |
1176 | "\n" | |
1177 | " git config --global user.name \"Your Name\"\n" | |
1178 | " git config --global user.email you@example.com\n" | |
1179 | "\n" | |
1180 | "After doing this, you may fix the identity used for this commit with:\n" | |
1181 | "\n" | |
1182 | " git commit --amend --reset-author\n"); | |
1183 | ||
1184 | static const char *implicit_ident_advice(void) | |
1185 | { | |
1186 | char *user_config = expand_user_path("~/.gitconfig", 0); | |
1187 | char *xdg_config = xdg_config_home("config"); | |
1188 | int config_exists = file_exists(user_config) || file_exists(xdg_config); | |
1189 | ||
1190 | free(user_config); | |
1191 | free(xdg_config); | |
1192 | ||
1193 | if (config_exists) | |
1194 | return _(implicit_ident_advice_config); | |
1195 | else | |
1196 | return _(implicit_ident_advice_noconfig); | |
1197 | ||
1198 | } | |
1199 | ||
1200 | void print_commit_summary(struct repository *r, | |
1201 | const char *prefix, | |
1202 | const struct object_id *oid, | |
1203 | unsigned int flags) | |
1204 | { | |
1205 | struct rev_info rev; | |
1206 | struct commit *commit; | |
1207 | struct strbuf format = STRBUF_INIT; | |
1208 | const char *head; | |
1209 | struct pretty_print_context pctx = {0}; | |
1210 | struct strbuf author_ident = STRBUF_INIT; | |
1211 | struct strbuf committer_ident = STRBUF_INIT; | |
1212 | ||
1213 | commit = lookup_commit(r, oid); | |
1214 | if (!commit) | |
1215 | die(_("couldn't look up newly created commit")); | |
1216 | if (parse_commit(commit)) | |
1217 | die(_("could not parse newly created commit")); | |
1218 | ||
1219 | strbuf_addstr(&format, "format:%h] %s"); | |
1220 | ||
1221 | format_commit_message(commit, "%an <%ae>", &author_ident, &pctx); | |
1222 | format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx); | |
1223 | if (strbuf_cmp(&author_ident, &committer_ident)) { | |
1224 | strbuf_addstr(&format, "\n Author: "); | |
1225 | strbuf_addbuf_percentquote(&format, &author_ident); | |
1226 | } | |
1227 | if (flags & SUMMARY_SHOW_AUTHOR_DATE) { | |
1228 | struct strbuf date = STRBUF_INIT; | |
1229 | ||
1230 | format_commit_message(commit, "%ad", &date, &pctx); | |
1231 | strbuf_addstr(&format, "\n Date: "); | |
1232 | strbuf_addbuf_percentquote(&format, &date); | |
1233 | strbuf_release(&date); | |
1234 | } | |
1235 | if (!committer_ident_sufficiently_given()) { | |
1236 | strbuf_addstr(&format, "\n Committer: "); | |
1237 | strbuf_addbuf_percentquote(&format, &committer_ident); | |
1238 | if (advice_implicit_identity) { | |
1239 | strbuf_addch(&format, '\n'); | |
1240 | strbuf_addstr(&format, implicit_ident_advice()); | |
1241 | } | |
1242 | } | |
1243 | strbuf_release(&author_ident); | |
1244 | strbuf_release(&committer_ident); | |
1245 | ||
1246 | repo_init_revisions(r, &rev, prefix); | |
1247 | setup_revisions(0, NULL, &rev, NULL); | |
1248 | ||
1249 | rev.diff = 1; | |
1250 | rev.diffopt.output_format = | |
1251 | DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY; | |
1252 | ||
1253 | rev.verbose_header = 1; | |
1254 | rev.show_root_diff = 1; | |
1255 | get_commit_format(format.buf, &rev); | |
1256 | rev.always_show_header = 0; | |
1257 | rev.diffopt.detect_rename = DIFF_DETECT_RENAME; | |
1258 | rev.diffopt.break_opt = 0; | |
1259 | diff_setup_done(&rev.diffopt); | |
1260 | ||
1261 | head = resolve_ref_unsafe("HEAD", 0, NULL, NULL); | |
1262 | if (!head) | |
1263 | die_errno(_("unable to resolve HEAD after creating commit")); | |
1264 | if (!strcmp(head, "HEAD")) | |
1265 | head = _("detached HEAD"); | |
1266 | else | |
1267 | skip_prefix(head, "refs/heads/", &head); | |
1268 | printf("[%s%s ", head, (flags & SUMMARY_INITIAL_COMMIT) ? | |
1269 | _(" (root-commit)") : ""); | |
1270 | ||
1271 | if (!log_tree_commit(&rev, commit)) { | |
1272 | rev.always_show_header = 1; | |
1273 | rev.use_terminator = 1; | |
1274 | log_tree_commit(&rev, commit); | |
1275 | } | |
1276 | ||
1277 | strbuf_release(&format); | |
1278 | } | |
1279 | ||
1280 | static int parse_head(struct repository *r, struct commit **head) | |
1281 | { | |
1282 | struct commit *current_head; | |
1283 | struct object_id oid; | |
1284 | ||
1285 | if (get_oid("HEAD", &oid)) { | |
1286 | current_head = NULL; | |
1287 | } else { | |
1288 | current_head = lookup_commit_reference(r, &oid); | |
1289 | if (!current_head) | |
1290 | return error(_("could not parse HEAD")); | |
1291 | if (!oideq(&oid, ¤t_head->object.oid)) { | |
1292 | warning(_("HEAD %s is not a commit!"), | |
1293 | oid_to_hex(&oid)); | |
1294 | } | |
1295 | if (parse_commit(current_head)) | |
1296 | return error(_("could not parse HEAD commit")); | |
1297 | } | |
1298 | *head = current_head; | |
1299 | ||
1300 | return 0; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * Try to commit without forking 'git commit'. In some cases we need | |
1305 | * to run 'git commit' to display an error message | |
1306 | * | |
1307 | * Returns: | |
1308 | * -1 - error unable to commit | |
1309 | * 0 - success | |
1310 | * 1 - run 'git commit' | |
1311 | */ | |
1312 | static int try_to_commit(struct repository *r, | |
1313 | struct strbuf *msg, const char *author, | |
1314 | struct replay_opts *opts, unsigned int flags, | |
1315 | struct object_id *oid) | |
1316 | { | |
1317 | struct object_id tree; | |
1318 | struct commit *current_head; | |
1319 | struct commit_list *parents = NULL; | |
1320 | struct commit_extra_header *extra = NULL; | |
1321 | struct strbuf err = STRBUF_INIT; | |
1322 | struct strbuf commit_msg = STRBUF_INIT; | |
1323 | char *amend_author = NULL; | |
1324 | const char *hook_commit = NULL; | |
1325 | enum commit_msg_cleanup_mode cleanup; | |
1326 | int res = 0; | |
1327 | ||
1328 | if (parse_head(r, ¤t_head)) | |
1329 | return -1; | |
1330 | ||
1331 | if (flags & AMEND_MSG) { | |
1332 | const char *exclude_gpgsig[] = { "gpgsig", NULL }; | |
1333 | const char *out_enc = get_commit_output_encoding(); | |
1334 | const char *message = logmsg_reencode(current_head, NULL, | |
1335 | out_enc); | |
1336 | ||
1337 | if (!msg) { | |
1338 | const char *orig_message = NULL; | |
1339 | ||
1340 | find_commit_subject(message, &orig_message); | |
1341 | msg = &commit_msg; | |
1342 | strbuf_addstr(msg, orig_message); | |
1343 | hook_commit = "HEAD"; | |
1344 | } | |
1345 | author = amend_author = get_author(message); | |
1346 | unuse_commit_buffer(current_head, message); | |
1347 | if (!author) { | |
1348 | res = error(_("unable to parse commit author")); | |
1349 | goto out; | |
1350 | } | |
1351 | parents = copy_commit_list(current_head->parents); | |
1352 | extra = read_commit_extra_headers(current_head, exclude_gpgsig); | |
1353 | } else if (current_head) { | |
1354 | commit_list_insert(current_head, &parents); | |
1355 | } | |
1356 | ||
1357 | if (write_index_as_tree(&tree, r->index, r->index_file, 0, NULL)) { | |
1358 | res = error(_("git write-tree failed to write a tree")); | |
1359 | goto out; | |
1360 | } | |
1361 | ||
1362 | if (!(flags & ALLOW_EMPTY) && oideq(current_head ? | |
1363 | get_commit_tree_oid(current_head) : | |
1364 | the_hash_algo->empty_tree, &tree)) { | |
1365 | res = 1; /* run 'git commit' to display error message */ | |
1366 | goto out; | |
1367 | } | |
1368 | ||
1369 | if (find_hook("prepare-commit-msg")) { | |
1370 | res = run_prepare_commit_msg_hook(r, msg, hook_commit); | |
1371 | if (res) | |
1372 | goto out; | |
1373 | if (strbuf_read_file(&commit_msg, git_path_commit_editmsg(), | |
1374 | 2048) < 0) { | |
1375 | res = error_errno(_("unable to read commit message " | |
1376 | "from '%s'"), | |
1377 | git_path_commit_editmsg()); | |
1378 | goto out; | |
1379 | } | |
1380 | msg = &commit_msg; | |
1381 | } | |
1382 | ||
1383 | cleanup = (flags & CLEANUP_MSG) ? COMMIT_MSG_CLEANUP_ALL : | |
1384 | opts->default_msg_cleanup; | |
1385 | ||
1386 | if (cleanup != COMMIT_MSG_CLEANUP_NONE) | |
1387 | strbuf_stripspace(msg, cleanup == COMMIT_MSG_CLEANUP_ALL); | |
1388 | if ((flags & EDIT_MSG) && message_is_empty(msg, cleanup)) { | |
1389 | res = 1; /* run 'git commit' to display error message */ | |
1390 | goto out; | |
1391 | } | |
1392 | ||
1393 | reset_ident_date(); | |
1394 | ||
1395 | if (commit_tree_extended(msg->buf, msg->len, &tree, parents, | |
1396 | oid, author, opts->gpg_sign, extra)) { | |
1397 | res = error(_("failed to write commit object")); | |
1398 | goto out; | |
1399 | } | |
1400 | ||
1401 | if (update_head_with_reflog(current_head, oid, | |
1402 | getenv("GIT_REFLOG_ACTION"), msg, &err)) { | |
1403 | res = error("%s", err.buf); | |
1404 | goto out; | |
1405 | } | |
1406 | ||
1407 | if (flags & AMEND_MSG) | |
1408 | commit_post_rewrite(current_head, oid); | |
1409 | ||
1410 | out: | |
1411 | free_commit_extra_headers(extra); | |
1412 | strbuf_release(&err); | |
1413 | strbuf_release(&commit_msg); | |
1414 | free(amend_author); | |
1415 | ||
1416 | return res; | |
1417 | } | |
1418 | ||
1419 | static int do_commit(struct repository *r, | |
1420 | const char *msg_file, const char *author, | |
1421 | struct replay_opts *opts, unsigned int flags) | |
1422 | { | |
1423 | int res = 1; | |
1424 | ||
1425 | if (!(flags & EDIT_MSG) && !(flags & VERIFY_MSG) && | |
1426 | !(flags & CREATE_ROOT_COMMIT)) { | |
1427 | struct object_id oid; | |
1428 | struct strbuf sb = STRBUF_INIT; | |
1429 | ||
1430 | if (msg_file && strbuf_read_file(&sb, msg_file, 2048) < 0) | |
1431 | return error_errno(_("unable to read commit message " | |
1432 | "from '%s'"), | |
1433 | msg_file); | |
1434 | ||
1435 | res = try_to_commit(r, msg_file ? &sb : NULL, | |
1436 | author, opts, flags, &oid); | |
1437 | strbuf_release(&sb); | |
1438 | if (!res) { | |
1439 | unlink(git_path_cherry_pick_head(r)); | |
1440 | unlink(git_path_merge_msg(r)); | |
1441 | if (!is_rebase_i(opts)) | |
1442 | print_commit_summary(r, NULL, &oid, | |
1443 | SUMMARY_SHOW_AUTHOR_DATE); | |
1444 | return res; | |
1445 | } | |
1446 | } | |
1447 | if (res == 1) | |
1448 | return run_git_commit(r, msg_file, opts, flags); | |
1449 | ||
1450 | return res; | |
1451 | } | |
1452 | ||
1453 | static int is_original_commit_empty(struct commit *commit) | |
1454 | { | |
1455 | const struct object_id *ptree_oid; | |
1456 | ||
1457 | if (parse_commit(commit)) | |
1458 | return error(_("could not parse commit %s"), | |
1459 | oid_to_hex(&commit->object.oid)); | |
1460 | if (commit->parents) { | |
1461 | struct commit *parent = commit->parents->item; | |
1462 | if (parse_commit(parent)) | |
1463 | return error(_("could not parse parent commit %s"), | |
1464 | oid_to_hex(&parent->object.oid)); | |
1465 | ptree_oid = get_commit_tree_oid(parent); | |
1466 | } else { | |
1467 | ptree_oid = the_hash_algo->empty_tree; /* commit is root */ | |
1468 | } | |
1469 | ||
1470 | return oideq(ptree_oid, get_commit_tree_oid(commit)); | |
1471 | } | |
1472 | ||
1473 | /* | |
1474 | * Do we run "git commit" with "--allow-empty"? | |
1475 | */ | |
1476 | static int allow_empty(struct repository *r, | |
1477 | struct replay_opts *opts, | |
1478 | struct commit *commit) | |
1479 | { | |
1480 | int index_unchanged, empty_commit; | |
1481 | ||
1482 | /* | |
1483 | * Three cases: | |
1484 | * | |
1485 | * (1) we do not allow empty at all and error out. | |
1486 | * | |
1487 | * (2) we allow ones that were initially empty, but | |
1488 | * forbid the ones that become empty; | |
1489 | * | |
1490 | * (3) we allow both. | |
1491 | */ | |
1492 | if (!opts->allow_empty) | |
1493 | return 0; /* let "git commit" barf as necessary */ | |
1494 | ||
1495 | index_unchanged = is_index_unchanged(r); | |
1496 | if (index_unchanged < 0) | |
1497 | return index_unchanged; | |
1498 | if (!index_unchanged) | |
1499 | return 0; /* we do not have to say --allow-empty */ | |
1500 | ||
1501 | if (opts->keep_redundant_commits) | |
1502 | return 1; | |
1503 | ||
1504 | empty_commit = is_original_commit_empty(commit); | |
1505 | if (empty_commit < 0) | |
1506 | return empty_commit; | |
1507 | if (!empty_commit) | |
1508 | return 0; | |
1509 | else | |
1510 | return 1; | |
1511 | } | |
1512 | ||
1513 | /* | |
1514 | * Note that ordering matters in this enum. Not only must it match the mapping | |
1515 | * below, it is also divided into several sections that matter. When adding | |
1516 | * new commands, make sure you add it in the right section. | |
1517 | */ | |
1518 | enum todo_command { | |
1519 | /* commands that handle commits */ | |
1520 | TODO_PICK = 0, | |
1521 | TODO_REVERT, | |
1522 | TODO_EDIT, | |
1523 | TODO_REWORD, | |
1524 | TODO_FIXUP, | |
1525 | TODO_SQUASH, | |
1526 | /* commands that do something else than handling a single commit */ | |
1527 | TODO_EXEC, | |
1528 | TODO_BREAK, | |
1529 | TODO_LABEL, | |
1530 | TODO_RESET, | |
1531 | TODO_MERGE, | |
1532 | /* commands that do nothing but are counted for reporting progress */ | |
1533 | TODO_NOOP, | |
1534 | TODO_DROP, | |
1535 | /* comments (not counted for reporting progress) */ | |
1536 | TODO_COMMENT | |
1537 | }; | |
1538 | ||
1539 | static struct { | |
1540 | char c; | |
1541 | const char *str; | |
1542 | } todo_command_info[] = { | |
1543 | { 'p', "pick" }, | |
1544 | { 0, "revert" }, | |
1545 | { 'e', "edit" }, | |
1546 | { 'r', "reword" }, | |
1547 | { 'f', "fixup" }, | |
1548 | { 's', "squash" }, | |
1549 | { 'x', "exec" }, | |
1550 | { 'b', "break" }, | |
1551 | { 'l', "label" }, | |
1552 | { 't', "reset" }, | |
1553 | { 'm', "merge" }, | |
1554 | { 0, "noop" }, | |
1555 | { 'd', "drop" }, | |
1556 | { 0, NULL } | |
1557 | }; | |
1558 | ||
1559 | static const char *command_to_string(const enum todo_command command) | |
1560 | { | |
1561 | if (command < TODO_COMMENT) | |
1562 | return todo_command_info[command].str; | |
1563 | die(_("unknown command: %d"), command); | |
1564 | } | |
1565 | ||
1566 | static char command_to_char(const enum todo_command command) | |
1567 | { | |
1568 | if (command < TODO_COMMENT && todo_command_info[command].c) | |
1569 | return todo_command_info[command].c; | |
1570 | return comment_line_char; | |
1571 | } | |
1572 | ||
1573 | static int is_noop(const enum todo_command command) | |
1574 | { | |
1575 | return TODO_NOOP <= command; | |
1576 | } | |
1577 | ||
1578 | static int is_fixup(enum todo_command command) | |
1579 | { | |
1580 | return command == TODO_FIXUP || command == TODO_SQUASH; | |
1581 | } | |
1582 | ||
1583 | /* Does this command create a (non-merge) commit? */ | |
1584 | static int is_pick_or_similar(enum todo_command command) | |
1585 | { | |
1586 | switch (command) { | |
1587 | case TODO_PICK: | |
1588 | case TODO_REVERT: | |
1589 | case TODO_EDIT: | |
1590 | case TODO_REWORD: | |
1591 | case TODO_FIXUP: | |
1592 | case TODO_SQUASH: | |
1593 | return 1; | |
1594 | default: | |
1595 | return 0; | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | static int update_squash_messages(struct repository *r, | |
1600 | enum todo_command command, | |
1601 | struct commit *commit, | |
1602 | struct replay_opts *opts) | |
1603 | { | |
1604 | struct strbuf buf = STRBUF_INIT; | |
1605 | int res; | |
1606 | const char *message, *body; | |
1607 | ||
1608 | if (opts->current_fixup_count > 0) { | |
1609 | struct strbuf header = STRBUF_INIT; | |
1610 | char *eol; | |
1611 | ||
1612 | if (strbuf_read_file(&buf, rebase_path_squash_msg(), 9) <= 0) | |
1613 | return error(_("could not read '%s'"), | |
1614 | rebase_path_squash_msg()); | |
1615 | ||
1616 | eol = buf.buf[0] != comment_line_char ? | |
1617 | buf.buf : strchrnul(buf.buf, '\n'); | |
1618 | ||
1619 | strbuf_addf(&header, "%c ", comment_line_char); | |
1620 | strbuf_addf(&header, _("This is a combination of %d commits."), | |
1621 | opts->current_fixup_count + 2); | |
1622 | strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len); | |
1623 | strbuf_release(&header); | |
1624 | } else { | |
1625 | struct object_id head; | |
1626 | struct commit *head_commit; | |
1627 | const char *head_message, *body; | |
1628 | ||
1629 | if (get_oid("HEAD", &head)) | |
1630 | return error(_("need a HEAD to fixup")); | |
1631 | if (!(head_commit = lookup_commit_reference(r, &head))) | |
1632 | return error(_("could not read HEAD")); | |
1633 | if (!(head_message = get_commit_buffer(head_commit, NULL))) | |
1634 | return error(_("could not read HEAD's commit message")); | |
1635 | ||
1636 | find_commit_subject(head_message, &body); | |
1637 | if (write_message(body, strlen(body), | |
1638 | rebase_path_fixup_msg(), 0)) { | |
1639 | unuse_commit_buffer(head_commit, head_message); | |
1640 | return error(_("cannot write '%s'"), | |
1641 | rebase_path_fixup_msg()); | |
1642 | } | |
1643 | ||
1644 | strbuf_addf(&buf, "%c ", comment_line_char); | |
1645 | strbuf_addf(&buf, _("This is a combination of %d commits."), 2); | |
1646 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
1647 | strbuf_addstr(&buf, _("This is the 1st commit message:")); | |
1648 | strbuf_addstr(&buf, "\n\n"); | |
1649 | strbuf_addstr(&buf, body); | |
1650 | ||
1651 | unuse_commit_buffer(head_commit, head_message); | |
1652 | } | |
1653 | ||
1654 | if (!(message = get_commit_buffer(commit, NULL))) | |
1655 | return error(_("could not read commit message of %s"), | |
1656 | oid_to_hex(&commit->object.oid)); | |
1657 | find_commit_subject(message, &body); | |
1658 | ||
1659 | if (command == TODO_SQUASH) { | |
1660 | unlink(rebase_path_fixup_msg()); | |
1661 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
1662 | strbuf_addf(&buf, _("This is the commit message #%d:"), | |
1663 | ++opts->current_fixup_count + 1); | |
1664 | strbuf_addstr(&buf, "\n\n"); | |
1665 | strbuf_addstr(&buf, body); | |
1666 | } else if (command == TODO_FIXUP) { | |
1667 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
1668 | strbuf_addf(&buf, _("The commit message #%d will be skipped:"), | |
1669 | ++opts->current_fixup_count + 1); | |
1670 | strbuf_addstr(&buf, "\n\n"); | |
1671 | strbuf_add_commented_lines(&buf, body, strlen(body)); | |
1672 | } else | |
1673 | return error(_("unknown command: %d"), command); | |
1674 | unuse_commit_buffer(commit, message); | |
1675 | ||
1676 | res = write_message(buf.buf, buf.len, rebase_path_squash_msg(), 0); | |
1677 | strbuf_release(&buf); | |
1678 | ||
1679 | if (!res) { | |
1680 | strbuf_addf(&opts->current_fixups, "%s%s %s", | |
1681 | opts->current_fixups.len ? "\n" : "", | |
1682 | command_to_string(command), | |
1683 | oid_to_hex(&commit->object.oid)); | |
1684 | res = write_message(opts->current_fixups.buf, | |
1685 | opts->current_fixups.len, | |
1686 | rebase_path_current_fixups(), 0); | |
1687 | } | |
1688 | ||
1689 | return res; | |
1690 | } | |
1691 | ||
1692 | static void flush_rewritten_pending(void) { | |
1693 | struct strbuf buf = STRBUF_INIT; | |
1694 | struct object_id newoid; | |
1695 | FILE *out; | |
1696 | ||
1697 | if (strbuf_read_file(&buf, rebase_path_rewritten_pending(), (GIT_MAX_HEXSZ + 1) * 2) > 0 && | |
1698 | !get_oid("HEAD", &newoid) && | |
1699 | (out = fopen_or_warn(rebase_path_rewritten_list(), "a"))) { | |
1700 | char *bol = buf.buf, *eol; | |
1701 | ||
1702 | while (*bol) { | |
1703 | eol = strchrnul(bol, '\n'); | |
1704 | fprintf(out, "%.*s %s\n", (int)(eol - bol), | |
1705 | bol, oid_to_hex(&newoid)); | |
1706 | if (!*eol) | |
1707 | break; | |
1708 | bol = eol + 1; | |
1709 | } | |
1710 | fclose(out); | |
1711 | unlink(rebase_path_rewritten_pending()); | |
1712 | } | |
1713 | strbuf_release(&buf); | |
1714 | } | |
1715 | ||
1716 | static void record_in_rewritten(struct object_id *oid, | |
1717 | enum todo_command next_command) { | |
1718 | FILE *out = fopen_or_warn(rebase_path_rewritten_pending(), "a"); | |
1719 | ||
1720 | if (!out) | |
1721 | return; | |
1722 | ||
1723 | fprintf(out, "%s\n", oid_to_hex(oid)); | |
1724 | fclose(out); | |
1725 | ||
1726 | if (!is_fixup(next_command)) | |
1727 | flush_rewritten_pending(); | |
1728 | } | |
1729 | ||
1730 | static int do_pick_commit(struct repository *r, | |
1731 | enum todo_command command, | |
1732 | struct commit *commit, | |
1733 | struct replay_opts *opts, | |
1734 | int final_fixup) | |
1735 | { | |
1736 | unsigned int flags = opts->edit ? EDIT_MSG : 0; | |
1737 | const char *msg_file = opts->edit ? NULL : git_path_merge_msg(r); | |
1738 | struct object_id head; | |
1739 | struct commit *base, *next, *parent; | |
1740 | const char *base_label, *next_label; | |
1741 | char *author = NULL; | |
1742 | struct commit_message msg = { NULL, NULL, NULL, NULL }; | |
1743 | struct strbuf msgbuf = STRBUF_INIT; | |
1744 | int res, unborn = 0, allow; | |
1745 | ||
1746 | if (opts->no_commit) { | |
1747 | /* | |
1748 | * We do not intend to commit immediately. We just want to | |
1749 | * merge the differences in, so let's compute the tree | |
1750 | * that represents the "current" state for merge-recursive | |
1751 | * to work on. | |
1752 | */ | |
1753 | if (write_index_as_tree(&head, r->index, r->index_file, 0, NULL)) | |
1754 | return error(_("your index file is unmerged.")); | |
1755 | } else { | |
1756 | unborn = get_oid("HEAD", &head); | |
1757 | /* Do we want to generate a root commit? */ | |
1758 | if (is_pick_or_similar(command) && opts->have_squash_onto && | |
1759 | oideq(&head, &opts->squash_onto)) { | |
1760 | if (is_fixup(command)) | |
1761 | return error(_("cannot fixup root commit")); | |
1762 | flags |= CREATE_ROOT_COMMIT; | |
1763 | unborn = 1; | |
1764 | } else if (unborn) | |
1765 | oidcpy(&head, the_hash_algo->empty_tree); | |
1766 | if (index_differs_from(r, unborn ? empty_tree_oid_hex() : "HEAD", | |
1767 | NULL, 0)) | |
1768 | return error_dirty_index(r->index, opts); | |
1769 | } | |
1770 | discard_index(r->index); | |
1771 | ||
1772 | if (!commit->parents) | |
1773 | parent = NULL; | |
1774 | else if (commit->parents->next) { | |
1775 | /* Reverting or cherry-picking a merge commit */ | |
1776 | int cnt; | |
1777 | struct commit_list *p; | |
1778 | ||
1779 | if (!opts->mainline) | |
1780 | return error(_("commit %s is a merge but no -m option was given."), | |
1781 | oid_to_hex(&commit->object.oid)); | |
1782 | ||
1783 | for (cnt = 1, p = commit->parents; | |
1784 | cnt != opts->mainline && p; | |
1785 | cnt++) | |
1786 | p = p->next; | |
1787 | if (cnt != opts->mainline || !p) | |
1788 | return error(_("commit %s does not have parent %d"), | |
1789 | oid_to_hex(&commit->object.oid), opts->mainline); | |
1790 | parent = p->item; | |
1791 | } else if (0 < opts->mainline) | |
1792 | return error(_("mainline was specified but commit %s is not a merge."), | |
1793 | oid_to_hex(&commit->object.oid)); | |
1794 | else | |
1795 | parent = commit->parents->item; | |
1796 | ||
1797 | if (get_message(commit, &msg) != 0) | |
1798 | return error(_("cannot get commit message for %s"), | |
1799 | oid_to_hex(&commit->object.oid)); | |
1800 | ||
1801 | if (opts->allow_ff && !is_fixup(command) && | |
1802 | ((parent && oideq(&parent->object.oid, &head)) || | |
1803 | (!parent && unborn))) { | |
1804 | if (is_rebase_i(opts)) | |
1805 | write_author_script(msg.message); | |
1806 | res = fast_forward_to(r, &commit->object.oid, &head, unborn, | |
1807 | opts); | |
1808 | if (res || command != TODO_REWORD) | |
1809 | goto leave; | |
1810 | flags |= EDIT_MSG | AMEND_MSG | VERIFY_MSG; | |
1811 | msg_file = NULL; | |
1812 | goto fast_forward_edit; | |
1813 | } | |
1814 | if (parent && parse_commit(parent) < 0) | |
1815 | /* TRANSLATORS: The first %s will be a "todo" command like | |
1816 | "revert" or "pick", the second %s a SHA1. */ | |
1817 | return error(_("%s: cannot parse parent commit %s"), | |
1818 | command_to_string(command), | |
1819 | oid_to_hex(&parent->object.oid)); | |
1820 | ||
1821 | /* | |
1822 | * "commit" is an existing commit. We would want to apply | |
1823 | * the difference it introduces since its first parent "prev" | |
1824 | * on top of the current HEAD if we are cherry-pick. Or the | |
1825 | * reverse of it if we are revert. | |
1826 | */ | |
1827 | ||
1828 | if (command == TODO_REVERT) { | |
1829 | base = commit; | |
1830 | base_label = msg.label; | |
1831 | next = parent; | |
1832 | next_label = msg.parent_label; | |
1833 | strbuf_addstr(&msgbuf, "Revert \""); | |
1834 | strbuf_addstr(&msgbuf, msg.subject); | |
1835 | strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit "); | |
1836 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); | |
1837 | ||
1838 | if (commit->parents && commit->parents->next) { | |
1839 | strbuf_addstr(&msgbuf, ", reversing\nchanges made to "); | |
1840 | strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid)); | |
1841 | } | |
1842 | strbuf_addstr(&msgbuf, ".\n"); | |
1843 | } else { | |
1844 | const char *p; | |
1845 | ||
1846 | base = parent; | |
1847 | base_label = msg.parent_label; | |
1848 | next = commit; | |
1849 | next_label = msg.label; | |
1850 | ||
1851 | /* Append the commit log message to msgbuf. */ | |
1852 | if (find_commit_subject(msg.message, &p)) | |
1853 | strbuf_addstr(&msgbuf, p); | |
1854 | ||
1855 | if (opts->record_origin) { | |
1856 | strbuf_complete_line(&msgbuf); | |
1857 | if (!has_conforming_footer(&msgbuf, NULL, 0)) | |
1858 | strbuf_addch(&msgbuf, '\n'); | |
1859 | strbuf_addstr(&msgbuf, cherry_picked_prefix); | |
1860 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); | |
1861 | strbuf_addstr(&msgbuf, ")\n"); | |
1862 | } | |
1863 | if (!is_fixup(command)) | |
1864 | author = get_author(msg.message); | |
1865 | } | |
1866 | ||
1867 | if (command == TODO_REWORD) | |
1868 | flags |= EDIT_MSG | VERIFY_MSG; | |
1869 | else if (is_fixup(command)) { | |
1870 | if (update_squash_messages(r, command, commit, opts)) | |
1871 | return -1; | |
1872 | flags |= AMEND_MSG; | |
1873 | if (!final_fixup) | |
1874 | msg_file = rebase_path_squash_msg(); | |
1875 | else if (file_exists(rebase_path_fixup_msg())) { | |
1876 | flags |= CLEANUP_MSG; | |
1877 | msg_file = rebase_path_fixup_msg(); | |
1878 | } else { | |
1879 | const char *dest = git_path_squash_msg(r); | |
1880 | unlink(dest); | |
1881 | if (copy_file(dest, rebase_path_squash_msg(), 0666)) | |
1882 | return error(_("could not rename '%s' to '%s'"), | |
1883 | rebase_path_squash_msg(), dest); | |
1884 | unlink(git_path_merge_msg(r)); | |
1885 | msg_file = dest; | |
1886 | flags |= EDIT_MSG; | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | if (opts->signoff && !is_fixup(command)) | |
1891 | append_signoff(&msgbuf, 0, 0); | |
1892 | ||
1893 | if (is_rebase_i(opts) && write_author_script(msg.message) < 0) | |
1894 | res = -1; | |
1895 | else if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { | |
1896 | res = do_recursive_merge(r, base, next, base_label, next_label, | |
1897 | &head, &msgbuf, opts); | |
1898 | if (res < 0) | |
1899 | goto leave; | |
1900 | ||
1901 | res |= write_message(msgbuf.buf, msgbuf.len, | |
1902 | git_path_merge_msg(r), 0); | |
1903 | } else { | |
1904 | struct commit_list *common = NULL; | |
1905 | struct commit_list *remotes = NULL; | |
1906 | ||
1907 | res = write_message(msgbuf.buf, msgbuf.len, | |
1908 | git_path_merge_msg(r), 0); | |
1909 | ||
1910 | commit_list_insert(base, &common); | |
1911 | commit_list_insert(next, &remotes); | |
1912 | res |= try_merge_command(r, opts->strategy, | |
1913 | opts->xopts_nr, (const char **)opts->xopts, | |
1914 | common, oid_to_hex(&head), remotes); | |
1915 | free_commit_list(common); | |
1916 | free_commit_list(remotes); | |
1917 | } | |
1918 | strbuf_release(&msgbuf); | |
1919 | ||
1920 | /* | |
1921 | * If the merge was clean or if it failed due to conflict, we write | |
1922 | * CHERRY_PICK_HEAD for the subsequent invocation of commit to use. | |
1923 | * However, if the merge did not even start, then we don't want to | |
1924 | * write it at all. | |
1925 | */ | |
1926 | if (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) && | |
1927 | update_ref(NULL, "CHERRY_PICK_HEAD", &commit->object.oid, NULL, | |
1928 | REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR)) | |
1929 | res = -1; | |
1930 | if (command == TODO_REVERT && ((opts->no_commit && res == 0) || res == 1) && | |
1931 | update_ref(NULL, "REVERT_HEAD", &commit->object.oid, NULL, | |
1932 | REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR)) | |
1933 | res = -1; | |
1934 | ||
1935 | if (res) { | |
1936 | error(command == TODO_REVERT | |
1937 | ? _("could not revert %s... %s") | |
1938 | : _("could not apply %s... %s"), | |
1939 | short_commit_name(commit), msg.subject); | |
1940 | print_advice(r, res == 1, opts); | |
1941 | repo_rerere(r, opts->allow_rerere_auto); | |
1942 | goto leave; | |
1943 | } | |
1944 | ||
1945 | allow = allow_empty(r, opts, commit); | |
1946 | if (allow < 0) { | |
1947 | res = allow; | |
1948 | goto leave; | |
1949 | } else if (allow) | |
1950 | flags |= ALLOW_EMPTY; | |
1951 | if (!opts->no_commit) { | |
1952 | fast_forward_edit: | |
1953 | if (author || command == TODO_REVERT || (flags & AMEND_MSG)) | |
1954 | res = do_commit(r, msg_file, author, opts, flags); | |
1955 | else | |
1956 | res = error(_("unable to parse commit author")); | |
1957 | } | |
1958 | ||
1959 | if (!res && final_fixup) { | |
1960 | unlink(rebase_path_fixup_msg()); | |
1961 | unlink(rebase_path_squash_msg()); | |
1962 | unlink(rebase_path_current_fixups()); | |
1963 | strbuf_reset(&opts->current_fixups); | |
1964 | opts->current_fixup_count = 0; | |
1965 | } | |
1966 | ||
1967 | leave: | |
1968 | free_message(commit, &msg); | |
1969 | free(author); | |
1970 | update_abort_safety_file(); | |
1971 | ||
1972 | return res; | |
1973 | } | |
1974 | ||
1975 | static int prepare_revs(struct replay_opts *opts) | |
1976 | { | |
1977 | /* | |
1978 | * picking (but not reverting) ranges (but not individual revisions) | |
1979 | * should be done in reverse | |
1980 | */ | |
1981 | if (opts->action == REPLAY_PICK && !opts->revs->no_walk) | |
1982 | opts->revs->reverse ^= 1; | |
1983 | ||
1984 | if (prepare_revision_walk(opts->revs)) | |
1985 | return error(_("revision walk setup failed")); | |
1986 | ||
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | static int read_and_refresh_cache(struct repository *r, | |
1991 | struct replay_opts *opts) | |
1992 | { | |
1993 | struct lock_file index_lock = LOCK_INIT; | |
1994 | int index_fd = hold_locked_index(&index_lock, 0); | |
1995 | if (read_index(r->index) < 0) { | |
1996 | rollback_lock_file(&index_lock); | |
1997 | return error(_("git %s: failed to read the index"), | |
1998 | _(action_name(opts))); | |
1999 | } | |
2000 | refresh_index(r->index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); | |
2001 | if (index_fd >= 0) { | |
2002 | if (write_locked_index(r->index, &index_lock, | |
2003 | COMMIT_LOCK | SKIP_IF_UNCHANGED)) { | |
2004 | return error(_("git %s: failed to refresh the index"), | |
2005 | _(action_name(opts))); | |
2006 | } | |
2007 | } | |
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | enum todo_item_flags { | |
2012 | TODO_EDIT_MERGE_MSG = 1 | |
2013 | }; | |
2014 | ||
2015 | struct todo_item { | |
2016 | enum todo_command command; | |
2017 | struct commit *commit; | |
2018 | unsigned int flags; | |
2019 | const char *arg; | |
2020 | int arg_len; | |
2021 | size_t offset_in_buf; | |
2022 | }; | |
2023 | ||
2024 | struct todo_list { | |
2025 | struct strbuf buf; | |
2026 | struct todo_item *items; | |
2027 | int nr, alloc, current; | |
2028 | int done_nr, total_nr; | |
2029 | struct stat_data stat; | |
2030 | }; | |
2031 | ||
2032 | #define TODO_LIST_INIT { STRBUF_INIT } | |
2033 | ||
2034 | static void todo_list_release(struct todo_list *todo_list) | |
2035 | { | |
2036 | strbuf_release(&todo_list->buf); | |
2037 | FREE_AND_NULL(todo_list->items); | |
2038 | todo_list->nr = todo_list->alloc = 0; | |
2039 | } | |
2040 | ||
2041 | static struct todo_item *append_new_todo(struct todo_list *todo_list) | |
2042 | { | |
2043 | ALLOC_GROW(todo_list->items, todo_list->nr + 1, todo_list->alloc); | |
2044 | return todo_list->items + todo_list->nr++; | |
2045 | } | |
2046 | ||
2047 | static int parse_insn_line(struct repository *r, struct todo_item *item, | |
2048 | const char *bol, char *eol) | |
2049 | { | |
2050 | struct object_id commit_oid; | |
2051 | char *end_of_object_name; | |
2052 | int i, saved, status, padding; | |
2053 | ||
2054 | item->flags = 0; | |
2055 | ||
2056 | /* left-trim */ | |
2057 | bol += strspn(bol, " \t"); | |
2058 | ||
2059 | if (bol == eol || *bol == '\r' || *bol == comment_line_char) { | |
2060 | item->command = TODO_COMMENT; | |
2061 | item->commit = NULL; | |
2062 | item->arg = bol; | |
2063 | item->arg_len = eol - bol; | |
2064 | return 0; | |
2065 | } | |
2066 | ||
2067 | for (i = 0; i < TODO_COMMENT; i++) | |
2068 | if (skip_prefix(bol, todo_command_info[i].str, &bol)) { | |
2069 | item->command = i; | |
2070 | break; | |
2071 | } else if ((bol + 1 == eol || bol[1] == ' ') && | |
2072 | *bol == todo_command_info[i].c) { | |
2073 | bol++; | |
2074 | item->command = i; | |
2075 | break; | |
2076 | } | |
2077 | if (i >= TODO_COMMENT) | |
2078 | return -1; | |
2079 | ||
2080 | /* Eat up extra spaces/ tabs before object name */ | |
2081 | padding = strspn(bol, " \t"); | |
2082 | bol += padding; | |
2083 | ||
2084 | if (item->command == TODO_NOOP || item->command == TODO_BREAK) { | |
2085 | if (bol != eol) | |
2086 | return error(_("%s does not accept arguments: '%s'"), | |
2087 | command_to_string(item->command), bol); | |
2088 | item->commit = NULL; | |
2089 | item->arg = bol; | |
2090 | item->arg_len = eol - bol; | |
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | if (!padding) | |
2095 | return error(_("missing arguments for %s"), | |
2096 | command_to_string(item->command)); | |
2097 | ||
2098 | if (item->command == TODO_EXEC || item->command == TODO_LABEL || | |
2099 | item->command == TODO_RESET) { | |
2100 | item->commit = NULL; | |
2101 | item->arg = bol; | |
2102 | item->arg_len = (int)(eol - bol); | |
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | if (item->command == TODO_MERGE) { | |
2107 | if (skip_prefix(bol, "-C", &bol)) | |
2108 | bol += strspn(bol, " \t"); | |
2109 | else if (skip_prefix(bol, "-c", &bol)) { | |
2110 | bol += strspn(bol, " \t"); | |
2111 | item->flags |= TODO_EDIT_MERGE_MSG; | |
2112 | } else { | |
2113 | item->flags |= TODO_EDIT_MERGE_MSG; | |
2114 | item->commit = NULL; | |
2115 | item->arg = bol; | |
2116 | item->arg_len = (int)(eol - bol); | |
2117 | return 0; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); | |
2122 | saved = *end_of_object_name; | |
2123 | *end_of_object_name = '\0'; | |
2124 | status = get_oid(bol, &commit_oid); | |
2125 | *end_of_object_name = saved; | |
2126 | ||
2127 | item->arg = end_of_object_name + strspn(end_of_object_name, " \t"); | |
2128 | item->arg_len = (int)(eol - item->arg); | |
2129 | ||
2130 | if (status < 0) | |
2131 | return -1; | |
2132 | ||
2133 | item->commit = lookup_commit_reference(r, &commit_oid); | |
2134 | return !item->commit; | |
2135 | } | |
2136 | ||
2137 | static int parse_insn_buffer(struct repository *r, char *buf, | |
2138 | struct todo_list *todo_list) | |
2139 | { | |
2140 | struct todo_item *item; | |
2141 | char *p = buf, *next_p; | |
2142 | int i, res = 0, fixup_okay = file_exists(rebase_path_done()); | |
2143 | ||
2144 | todo_list->current = todo_list->nr = 0; | |
2145 | ||
2146 | for (i = 1; *p; i++, p = next_p) { | |
2147 | char *eol = strchrnul(p, '\n'); | |
2148 | ||
2149 | next_p = *eol ? eol + 1 /* skip LF */ : eol; | |
2150 | ||
2151 | if (p != eol && eol[-1] == '\r') | |
2152 | eol--; /* strip Carriage Return */ | |
2153 | ||
2154 | item = append_new_todo(todo_list); | |
2155 | item->offset_in_buf = p - todo_list->buf.buf; | |
2156 | if (parse_insn_line(r, item, p, eol)) { | |
2157 | res = error(_("invalid line %d: %.*s"), | |
2158 | i, (int)(eol - p), p); | |
2159 | item->command = TODO_COMMENT + 1; | |
2160 | item->arg = p; | |
2161 | item->arg_len = (int)(eol - p); | |
2162 | item->commit = NULL; | |
2163 | } | |
2164 | ||
2165 | if (fixup_okay) | |
2166 | ; /* do nothing */ | |
2167 | else if (is_fixup(item->command)) | |
2168 | return error(_("cannot '%s' without a previous commit"), | |
2169 | command_to_string(item->command)); | |
2170 | else if (!is_noop(item->command)) | |
2171 | fixup_okay = 1; | |
2172 | } | |
2173 | ||
2174 | return res; | |
2175 | } | |
2176 | ||
2177 | static int count_commands(struct todo_list *todo_list) | |
2178 | { | |
2179 | int count = 0, i; | |
2180 | ||
2181 | for (i = 0; i < todo_list->nr; i++) | |
2182 | if (todo_list->items[i].command != TODO_COMMENT) | |
2183 | count++; | |
2184 | ||
2185 | return count; | |
2186 | } | |
2187 | ||
2188 | static int get_item_line_offset(struct todo_list *todo_list, int index) | |
2189 | { | |
2190 | return index < todo_list->nr ? | |
2191 | todo_list->items[index].offset_in_buf : todo_list->buf.len; | |
2192 | } | |
2193 | ||
2194 | static const char *get_item_line(struct todo_list *todo_list, int index) | |
2195 | { | |
2196 | return todo_list->buf.buf + get_item_line_offset(todo_list, index); | |
2197 | } | |
2198 | ||
2199 | static int get_item_line_length(struct todo_list *todo_list, int index) | |
2200 | { | |
2201 | return get_item_line_offset(todo_list, index + 1) | |
2202 | - get_item_line_offset(todo_list, index); | |
2203 | } | |
2204 | ||
2205 | static ssize_t strbuf_read_file_or_whine(struct strbuf *sb, const char *path) | |
2206 | { | |
2207 | int fd; | |
2208 | ssize_t len; | |
2209 | ||
2210 | fd = open(path, O_RDONLY); | |
2211 | if (fd < 0) | |
2212 | return error_errno(_("could not open '%s'"), path); | |
2213 | len = strbuf_read(sb, fd, 0); | |
2214 | close(fd); | |
2215 | if (len < 0) | |
2216 | return error(_("could not read '%s'."), path); | |
2217 | return len; | |
2218 | } | |
2219 | ||
2220 | static int read_populate_todo(struct repository *r, | |
2221 | struct todo_list *todo_list, | |
2222 | struct replay_opts *opts) | |
2223 | { | |
2224 | struct stat st; | |
2225 | const char *todo_file = get_todo_path(opts); | |
2226 | int res; | |
2227 | ||
2228 | strbuf_reset(&todo_list->buf); | |
2229 | if (strbuf_read_file_or_whine(&todo_list->buf, todo_file) < 0) | |
2230 | return -1; | |
2231 | ||
2232 | res = stat(todo_file, &st); | |
2233 | if (res) | |
2234 | return error(_("could not stat '%s'"), todo_file); | |
2235 | fill_stat_data(&todo_list->stat, &st); | |
2236 | ||
2237 | res = parse_insn_buffer(r, todo_list->buf.buf, todo_list); | |
2238 | if (res) { | |
2239 | if (is_rebase_i(opts)) | |
2240 | return error(_("please fix this using " | |
2241 | "'git rebase --edit-todo'.")); | |
2242 | return error(_("unusable instruction sheet: '%s'"), todo_file); | |
2243 | } | |
2244 | ||
2245 | if (!todo_list->nr && | |
2246 | (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) | |
2247 | return error(_("no commits parsed.")); | |
2248 | ||
2249 | if (!is_rebase_i(opts)) { | |
2250 | enum todo_command valid = | |
2251 | opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT; | |
2252 | int i; | |
2253 | ||
2254 | for (i = 0; i < todo_list->nr; i++) | |
2255 | if (valid == todo_list->items[i].command) | |
2256 | continue; | |
2257 | else if (valid == TODO_PICK) | |
2258 | return error(_("cannot cherry-pick during a revert.")); | |
2259 | else | |
2260 | return error(_("cannot revert during a cherry-pick.")); | |
2261 | } | |
2262 | ||
2263 | if (is_rebase_i(opts)) { | |
2264 | struct todo_list done = TODO_LIST_INIT; | |
2265 | FILE *f = fopen_or_warn(rebase_path_msgtotal(), "w"); | |
2266 | ||
2267 | if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && | |
2268 | !parse_insn_buffer(r, done.buf.buf, &done)) | |
2269 | todo_list->done_nr = count_commands(&done); | |
2270 | else | |
2271 | todo_list->done_nr = 0; | |
2272 | ||
2273 | todo_list->total_nr = todo_list->done_nr | |
2274 | + count_commands(todo_list); | |
2275 | todo_list_release(&done); | |
2276 | ||
2277 | if (f) { | |
2278 | fprintf(f, "%d\n", todo_list->total_nr); | |
2279 | fclose(f); | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | return 0; | |
2284 | } | |
2285 | ||
2286 | static int git_config_string_dup(char **dest, | |
2287 | const char *var, const char *value) | |
2288 | { | |
2289 | if (!value) | |
2290 | return config_error_nonbool(var); | |
2291 | free(*dest); | |
2292 | *dest = xstrdup(value); | |
2293 | return 0; | |
2294 | } | |
2295 | ||
2296 | static int populate_opts_cb(const char *key, const char *value, void *data) | |
2297 | { | |
2298 | struct replay_opts *opts = data; | |
2299 | int error_flag = 1; | |
2300 | ||
2301 | if (!value) | |
2302 | error_flag = 0; | |
2303 | else if (!strcmp(key, "options.no-commit")) | |
2304 | opts->no_commit = git_config_bool_or_int(key, value, &error_flag); | |
2305 | else if (!strcmp(key, "options.edit")) | |
2306 | opts->edit = git_config_bool_or_int(key, value, &error_flag); | |
2307 | else if (!strcmp(key, "options.signoff")) | |
2308 | opts->signoff = git_config_bool_or_int(key, value, &error_flag); | |
2309 | else if (!strcmp(key, "options.record-origin")) | |
2310 | opts->record_origin = git_config_bool_or_int(key, value, &error_flag); | |
2311 | else if (!strcmp(key, "options.allow-ff")) | |
2312 | opts->allow_ff = git_config_bool_or_int(key, value, &error_flag); | |
2313 | else if (!strcmp(key, "options.mainline")) | |
2314 | opts->mainline = git_config_int(key, value); | |
2315 | else if (!strcmp(key, "options.strategy")) | |
2316 | git_config_string_dup(&opts->strategy, key, value); | |
2317 | else if (!strcmp(key, "options.gpg-sign")) | |
2318 | git_config_string_dup(&opts->gpg_sign, key, value); | |
2319 | else if (!strcmp(key, "options.strategy-option")) { | |
2320 | ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc); | |
2321 | opts->xopts[opts->xopts_nr++] = xstrdup(value); | |
2322 | } else if (!strcmp(key, "options.allow-rerere-auto")) | |
2323 | opts->allow_rerere_auto = | |
2324 | git_config_bool_or_int(key, value, &error_flag) ? | |
2325 | RERERE_AUTOUPDATE : RERERE_NOAUTOUPDATE; | |
2326 | else | |
2327 | return error(_("invalid key: %s"), key); | |
2328 | ||
2329 | if (!error_flag) | |
2330 | return error(_("invalid value for %s: %s"), key, value); | |
2331 | ||
2332 | return 0; | |
2333 | } | |
2334 | ||
2335 | void parse_strategy_opts(struct replay_opts *opts, char *raw_opts) | |
2336 | { | |
2337 | int i; | |
2338 | char *strategy_opts_string = raw_opts; | |
2339 | ||
2340 | if (*strategy_opts_string == ' ') | |
2341 | strategy_opts_string++; | |
2342 | ||
2343 | opts->xopts_nr = split_cmdline(strategy_opts_string, | |
2344 | (const char ***)&opts->xopts); | |
2345 | for (i = 0; i < opts->xopts_nr; i++) { | |
2346 | const char *arg = opts->xopts[i]; | |
2347 | ||
2348 | skip_prefix(arg, "--", &arg); | |
2349 | opts->xopts[i] = xstrdup(arg); | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | static void read_strategy_opts(struct replay_opts *opts, struct strbuf *buf) | |
2354 | { | |
2355 | strbuf_reset(buf); | |
2356 | if (!read_oneliner(buf, rebase_path_strategy(), 0)) | |
2357 | return; | |
2358 | opts->strategy = strbuf_detach(buf, NULL); | |
2359 | if (!read_oneliner(buf, rebase_path_strategy_opts(), 0)) | |
2360 | return; | |
2361 | ||
2362 | parse_strategy_opts(opts, buf->buf); | |
2363 | } | |
2364 | ||
2365 | static int read_populate_opts(struct replay_opts *opts) | |
2366 | { | |
2367 | if (is_rebase_i(opts)) { | |
2368 | struct strbuf buf = STRBUF_INIT; | |
2369 | ||
2370 | if (read_oneliner(&buf, rebase_path_gpg_sign_opt(), 1)) { | |
2371 | if (!starts_with(buf.buf, "-S")) | |
2372 | strbuf_reset(&buf); | |
2373 | else { | |
2374 | free(opts->gpg_sign); | |
2375 | opts->gpg_sign = xstrdup(buf.buf + 2); | |
2376 | } | |
2377 | strbuf_reset(&buf); | |
2378 | } | |
2379 | ||
2380 | if (read_oneliner(&buf, rebase_path_allow_rerere_autoupdate(), 1)) { | |
2381 | if (!strcmp(buf.buf, "--rerere-autoupdate")) | |
2382 | opts->allow_rerere_auto = RERERE_AUTOUPDATE; | |
2383 | else if (!strcmp(buf.buf, "--no-rerere-autoupdate")) | |
2384 | opts->allow_rerere_auto = RERERE_NOAUTOUPDATE; | |
2385 | strbuf_reset(&buf); | |
2386 | } | |
2387 | ||
2388 | if (file_exists(rebase_path_verbose())) | |
2389 | opts->verbose = 1; | |
2390 | ||
2391 | if (file_exists(rebase_path_signoff())) { | |
2392 | opts->allow_ff = 0; | |
2393 | opts->signoff = 1; | |
2394 | } | |
2395 | ||
2396 | read_strategy_opts(opts, &buf); | |
2397 | strbuf_release(&buf); | |
2398 | ||
2399 | if (read_oneliner(&opts->current_fixups, | |
2400 | rebase_path_current_fixups(), 1)) { | |
2401 | const char *p = opts->current_fixups.buf; | |
2402 | opts->current_fixup_count = 1; | |
2403 | while ((p = strchr(p, '\n'))) { | |
2404 | opts->current_fixup_count++; | |
2405 | p++; | |
2406 | } | |
2407 | } | |
2408 | ||
2409 | if (read_oneliner(&buf, rebase_path_squash_onto(), 0)) { | |
2410 | if (get_oid_hex(buf.buf, &opts->squash_onto) < 0) | |
2411 | return error(_("unusable squash-onto")); | |
2412 | opts->have_squash_onto = 1; | |
2413 | } | |
2414 | ||
2415 | return 0; | |
2416 | } | |
2417 | ||
2418 | if (!file_exists(git_path_opts_file())) | |
2419 | return 0; | |
2420 | /* | |
2421 | * The function git_parse_source(), called from git_config_from_file(), | |
2422 | * may die() in case of a syntactically incorrect file. We do not care | |
2423 | * about this case, though, because we wrote that file ourselves, so we | |
2424 | * are pretty certain that it is syntactically correct. | |
2425 | */ | |
2426 | if (git_config_from_file(populate_opts_cb, git_path_opts_file(), opts) < 0) | |
2427 | return error(_("malformed options sheet: '%s'"), | |
2428 | git_path_opts_file()); | |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static void write_strategy_opts(struct replay_opts *opts) | |
2433 | { | |
2434 | int i; | |
2435 | struct strbuf buf = STRBUF_INIT; | |
2436 | ||
2437 | for (i = 0; i < opts->xopts_nr; ++i) | |
2438 | strbuf_addf(&buf, " --%s", opts->xopts[i]); | |
2439 | ||
2440 | write_file(rebase_path_strategy_opts(), "%s\n", buf.buf); | |
2441 | strbuf_release(&buf); | |
2442 | } | |
2443 | ||
2444 | int write_basic_state(struct replay_opts *opts, const char *head_name, | |
2445 | const char *onto, const char *orig_head) | |
2446 | { | |
2447 | const char *quiet = getenv("GIT_QUIET"); | |
2448 | ||
2449 | if (head_name) | |
2450 | write_file(rebase_path_head_name(), "%s\n", head_name); | |
2451 | if (onto) | |
2452 | write_file(rebase_path_onto(), "%s\n", onto); | |
2453 | if (orig_head) | |
2454 | write_file(rebase_path_orig_head(), "%s\n", orig_head); | |
2455 | ||
2456 | if (quiet) | |
2457 | write_file(rebase_path_quiet(), "%s\n", quiet); | |
2458 | else | |
2459 | write_file(rebase_path_quiet(), "\n"); | |
2460 | ||
2461 | if (opts->verbose) | |
2462 | write_file(rebase_path_verbose(), "%s", ""); | |
2463 | if (opts->strategy) | |
2464 | write_file(rebase_path_strategy(), "%s\n", opts->strategy); | |
2465 | if (opts->xopts_nr > 0) | |
2466 | write_strategy_opts(opts); | |
2467 | ||
2468 | if (opts->allow_rerere_auto == RERERE_AUTOUPDATE) | |
2469 | write_file(rebase_path_allow_rerere_autoupdate(), "--rerere-autoupdate\n"); | |
2470 | else if (opts->allow_rerere_auto == RERERE_NOAUTOUPDATE) | |
2471 | write_file(rebase_path_allow_rerere_autoupdate(), "--no-rerere-autoupdate\n"); | |
2472 | ||
2473 | if (opts->gpg_sign) | |
2474 | write_file(rebase_path_gpg_sign_opt(), "-S%s\n", opts->gpg_sign); | |
2475 | if (opts->signoff) | |
2476 | write_file(rebase_path_signoff(), "--signoff\n"); | |
2477 | ||
2478 | return 0; | |
2479 | } | |
2480 | ||
2481 | static int walk_revs_populate_todo(struct todo_list *todo_list, | |
2482 | struct replay_opts *opts) | |
2483 | { | |
2484 | enum todo_command command = opts->action == REPLAY_PICK ? | |
2485 | TODO_PICK : TODO_REVERT; | |
2486 | const char *command_string = todo_command_info[command].str; | |
2487 | struct commit *commit; | |
2488 | ||
2489 | if (prepare_revs(opts)) | |
2490 | return -1; | |
2491 | ||
2492 | while ((commit = get_revision(opts->revs))) { | |
2493 | struct todo_item *item = append_new_todo(todo_list); | |
2494 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
2495 | const char *subject; | |
2496 | int subject_len; | |
2497 | ||
2498 | item->command = command; | |
2499 | item->commit = commit; | |
2500 | item->arg = NULL; | |
2501 | item->arg_len = 0; | |
2502 | item->offset_in_buf = todo_list->buf.len; | |
2503 | subject_len = find_commit_subject(commit_buffer, &subject); | |
2504 | strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string, | |
2505 | short_commit_name(commit), subject_len, subject); | |
2506 | unuse_commit_buffer(commit, commit_buffer); | |
2507 | } | |
2508 | ||
2509 | if (!todo_list->nr) | |
2510 | return error(_("empty commit set passed")); | |
2511 | ||
2512 | return 0; | |
2513 | } | |
2514 | ||
2515 | static int create_seq_dir(void) | |
2516 | { | |
2517 | if (file_exists(git_path_seq_dir())) { | |
2518 | error(_("a cherry-pick or revert is already in progress")); | |
2519 | advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); | |
2520 | return -1; | |
2521 | } else if (mkdir(git_path_seq_dir(), 0777) < 0) | |
2522 | return error_errno(_("could not create sequencer directory '%s'"), | |
2523 | git_path_seq_dir()); | |
2524 | return 0; | |
2525 | } | |
2526 | ||
2527 | static int save_head(const char *head) | |
2528 | { | |
2529 | struct lock_file head_lock = LOCK_INIT; | |
2530 | struct strbuf buf = STRBUF_INIT; | |
2531 | int fd; | |
2532 | ssize_t written; | |
2533 | ||
2534 | fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0); | |
2535 | if (fd < 0) | |
2536 | return error_errno(_("could not lock HEAD")); | |
2537 | strbuf_addf(&buf, "%s\n", head); | |
2538 | written = write_in_full(fd, buf.buf, buf.len); | |
2539 | strbuf_release(&buf); | |
2540 | if (written < 0) { | |
2541 | error_errno(_("could not write to '%s'"), git_path_head_file()); | |
2542 | rollback_lock_file(&head_lock); | |
2543 | return -1; | |
2544 | } | |
2545 | if (commit_lock_file(&head_lock) < 0) | |
2546 | return error(_("failed to finalize '%s'"), git_path_head_file()); | |
2547 | return 0; | |
2548 | } | |
2549 | ||
2550 | static int rollback_is_safe(void) | |
2551 | { | |
2552 | struct strbuf sb = STRBUF_INIT; | |
2553 | struct object_id expected_head, actual_head; | |
2554 | ||
2555 | if (strbuf_read_file(&sb, git_path_abort_safety_file(), 0) >= 0) { | |
2556 | strbuf_trim(&sb); | |
2557 | if (get_oid_hex(sb.buf, &expected_head)) { | |
2558 | strbuf_release(&sb); | |
2559 | die(_("could not parse %s"), git_path_abort_safety_file()); | |
2560 | } | |
2561 | strbuf_release(&sb); | |
2562 | } | |
2563 | else if (errno == ENOENT) | |
2564 | oidclr(&expected_head); | |
2565 | else | |
2566 | die_errno(_("could not read '%s'"), git_path_abort_safety_file()); | |
2567 | ||
2568 | if (get_oid("HEAD", &actual_head)) | |
2569 | oidclr(&actual_head); | |
2570 | ||
2571 | return oideq(&actual_head, &expected_head); | |
2572 | } | |
2573 | ||
2574 | static int reset_for_rollback(const struct object_id *oid) | |
2575 | { | |
2576 | const char *argv[4]; /* reset --merge <arg> + NULL */ | |
2577 | ||
2578 | argv[0] = "reset"; | |
2579 | argv[1] = "--merge"; | |
2580 | argv[2] = oid_to_hex(oid); | |
2581 | argv[3] = NULL; | |
2582 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
2583 | } | |
2584 | ||
2585 | static int rollback_single_pick(struct repository *r) | |
2586 | { | |
2587 | struct object_id head_oid; | |
2588 | ||
2589 | if (!file_exists(git_path_cherry_pick_head(r)) && | |
2590 | !file_exists(git_path_revert_head(r))) | |
2591 | return error(_("no cherry-pick or revert in progress")); | |
2592 | if (read_ref_full("HEAD", 0, &head_oid, NULL)) | |
2593 | return error(_("cannot resolve HEAD")); | |
2594 | if (is_null_oid(&head_oid)) | |
2595 | return error(_("cannot abort from a branch yet to be born")); | |
2596 | return reset_for_rollback(&head_oid); | |
2597 | } | |
2598 | ||
2599 | int sequencer_rollback(struct repository *r, struct replay_opts *opts) | |
2600 | { | |
2601 | FILE *f; | |
2602 | struct object_id oid; | |
2603 | struct strbuf buf = STRBUF_INIT; | |
2604 | const char *p; | |
2605 | ||
2606 | f = fopen(git_path_head_file(), "r"); | |
2607 | if (!f && errno == ENOENT) { | |
2608 | /* | |
2609 | * There is no multiple-cherry-pick in progress. | |
2610 | * If CHERRY_PICK_HEAD or REVERT_HEAD indicates | |
2611 | * a single-cherry-pick in progress, abort that. | |
2612 | */ | |
2613 | return rollback_single_pick(r); | |
2614 | } | |
2615 | if (!f) | |
2616 | return error_errno(_("cannot open '%s'"), git_path_head_file()); | |
2617 | if (strbuf_getline_lf(&buf, f)) { | |
2618 | error(_("cannot read '%s': %s"), git_path_head_file(), | |
2619 | ferror(f) ? strerror(errno) : _("unexpected end of file")); | |
2620 | fclose(f); | |
2621 | goto fail; | |
2622 | } | |
2623 | fclose(f); | |
2624 | if (parse_oid_hex(buf.buf, &oid, &p) || *p != '\0') { | |
2625 | error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"), | |
2626 | git_path_head_file()); | |
2627 | goto fail; | |
2628 | } | |
2629 | if (is_null_oid(&oid)) { | |
2630 | error(_("cannot abort from a branch yet to be born")); | |
2631 | goto fail; | |
2632 | } | |
2633 | ||
2634 | if (!rollback_is_safe()) { | |
2635 | /* Do not error, just do not rollback */ | |
2636 | warning(_("You seem to have moved HEAD. " | |
2637 | "Not rewinding, check your HEAD!")); | |
2638 | } else | |
2639 | if (reset_for_rollback(&oid)) | |
2640 | goto fail; | |
2641 | strbuf_release(&buf); | |
2642 | return sequencer_remove_state(opts); | |
2643 | fail: | |
2644 | strbuf_release(&buf); | |
2645 | return -1; | |
2646 | } | |
2647 | ||
2648 | static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) | |
2649 | { | |
2650 | struct lock_file todo_lock = LOCK_INIT; | |
2651 | const char *todo_path = get_todo_path(opts); | |
2652 | int next = todo_list->current, offset, fd; | |
2653 | ||
2654 | /* | |
2655 | * rebase -i writes "git-rebase-todo" without the currently executing | |
2656 | * command, appending it to "done" instead. | |
2657 | */ | |
2658 | if (is_rebase_i(opts)) | |
2659 | next++; | |
2660 | ||
2661 | fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); | |
2662 | if (fd < 0) | |
2663 | return error_errno(_("could not lock '%s'"), todo_path); | |
2664 | offset = get_item_line_offset(todo_list, next); | |
2665 | if (write_in_full(fd, todo_list->buf.buf + offset, | |
2666 | todo_list->buf.len - offset) < 0) | |
2667 | return error_errno(_("could not write to '%s'"), todo_path); | |
2668 | if (commit_lock_file(&todo_lock) < 0) | |
2669 | return error(_("failed to finalize '%s'"), todo_path); | |
2670 | ||
2671 | if (is_rebase_i(opts) && next > 0) { | |
2672 | const char *done = rebase_path_done(); | |
2673 | int fd = open(done, O_CREAT | O_WRONLY | O_APPEND, 0666); | |
2674 | int ret = 0; | |
2675 | ||
2676 | if (fd < 0) | |
2677 | return 0; | |
2678 | if (write_in_full(fd, get_item_line(todo_list, next - 1), | |
2679 | get_item_line_length(todo_list, next - 1)) | |
2680 | < 0) | |
2681 | ret = error_errno(_("could not write to '%s'"), done); | |
2682 | if (close(fd) < 0) | |
2683 | ret = error_errno(_("failed to finalize '%s'"), done); | |
2684 | return ret; | |
2685 | } | |
2686 | return 0; | |
2687 | } | |
2688 | ||
2689 | static int save_opts(struct replay_opts *opts) | |
2690 | { | |
2691 | const char *opts_file = git_path_opts_file(); | |
2692 | int res = 0; | |
2693 | ||
2694 | if (opts->no_commit) | |
2695 | res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true"); | |
2696 | if (opts->edit) | |
2697 | res |= git_config_set_in_file_gently(opts_file, "options.edit", "true"); | |
2698 | if (opts->signoff) | |
2699 | res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true"); | |
2700 | if (opts->record_origin) | |
2701 | res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true"); | |
2702 | if (opts->allow_ff) | |
2703 | res |= git_config_set_in_file_gently(opts_file, "options.allow-ff", "true"); | |
2704 | if (opts->mainline) { | |
2705 | struct strbuf buf = STRBUF_INIT; | |
2706 | strbuf_addf(&buf, "%d", opts->mainline); | |
2707 | res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf); | |
2708 | strbuf_release(&buf); | |
2709 | } | |
2710 | if (opts->strategy) | |
2711 | res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy); | |
2712 | if (opts->gpg_sign) | |
2713 | res |= git_config_set_in_file_gently(opts_file, "options.gpg-sign", opts->gpg_sign); | |
2714 | if (opts->xopts) { | |
2715 | int i; | |
2716 | for (i = 0; i < opts->xopts_nr; i++) | |
2717 | res |= git_config_set_multivar_in_file_gently(opts_file, | |
2718 | "options.strategy-option", | |
2719 | opts->xopts[i], "^$", 0); | |
2720 | } | |
2721 | if (opts->allow_rerere_auto) | |
2722 | res |= git_config_set_in_file_gently(opts_file, "options.allow-rerere-auto", | |
2723 | opts->allow_rerere_auto == RERERE_AUTOUPDATE ? | |
2724 | "true" : "false"); | |
2725 | return res; | |
2726 | } | |
2727 | ||
2728 | static int make_patch(struct repository *r, | |
2729 | struct commit *commit, | |
2730 | struct replay_opts *opts) | |
2731 | { | |
2732 | struct strbuf buf = STRBUF_INIT; | |
2733 | struct rev_info log_tree_opt; | |
2734 | const char *subject, *p; | |
2735 | int res = 0; | |
2736 | ||
2737 | p = short_commit_name(commit); | |
2738 | if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0) | |
2739 | return -1; | |
2740 | if (update_ref("rebase", "REBASE_HEAD", &commit->object.oid, | |
2741 | NULL, REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR)) | |
2742 | res |= error(_("could not update %s"), "REBASE_HEAD"); | |
2743 | ||
2744 | strbuf_addf(&buf, "%s/patch", get_dir(opts)); | |
2745 | memset(&log_tree_opt, 0, sizeof(log_tree_opt)); | |
2746 | repo_init_revisions(r, &log_tree_opt, NULL); | |
2747 | log_tree_opt.abbrev = 0; | |
2748 | log_tree_opt.diff = 1; | |
2749 | log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH; | |
2750 | log_tree_opt.disable_stdin = 1; | |
2751 | log_tree_opt.no_commit_id = 1; | |
2752 | log_tree_opt.diffopt.file = fopen(buf.buf, "w"); | |
2753 | log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER; | |
2754 | if (!log_tree_opt.diffopt.file) | |
2755 | res |= error_errno(_("could not open '%s'"), buf.buf); | |
2756 | else { | |
2757 | res |= log_tree_commit(&log_tree_opt, commit); | |
2758 | fclose(log_tree_opt.diffopt.file); | |
2759 | } | |
2760 | strbuf_reset(&buf); | |
2761 | ||
2762 | strbuf_addf(&buf, "%s/message", get_dir(opts)); | |
2763 | if (!file_exists(buf.buf)) { | |
2764 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
2765 | find_commit_subject(commit_buffer, &subject); | |
2766 | res |= write_message(subject, strlen(subject), buf.buf, 1); | |
2767 | unuse_commit_buffer(commit, commit_buffer); | |
2768 | } | |
2769 | strbuf_release(&buf); | |
2770 | ||
2771 | return res; | |
2772 | } | |
2773 | ||
2774 | static int intend_to_amend(void) | |
2775 | { | |
2776 | struct object_id head; | |
2777 | char *p; | |
2778 | ||
2779 | if (get_oid("HEAD", &head)) | |
2780 | return error(_("cannot read HEAD")); | |
2781 | ||
2782 | p = oid_to_hex(&head); | |
2783 | return write_message(p, strlen(p), rebase_path_amend(), 1); | |
2784 | } | |
2785 | ||
2786 | static int error_with_patch(struct repository *r, | |
2787 | struct commit *commit, | |
2788 | const char *subject, int subject_len, | |
2789 | struct replay_opts *opts, | |
2790 | int exit_code, int to_amend) | |
2791 | { | |
2792 | if (commit) { | |
2793 | if (make_patch(r, commit, opts)) | |
2794 | return -1; | |
2795 | } else if (copy_file(rebase_path_message(), | |
2796 | git_path_merge_msg(r), 0666)) | |
2797 | return error(_("unable to copy '%s' to '%s'"), | |
2798 | git_path_merge_msg(r), rebase_path_message()); | |
2799 | ||
2800 | if (to_amend) { | |
2801 | if (intend_to_amend()) | |
2802 | return -1; | |
2803 | ||
2804 | fprintf(stderr, | |
2805 | _("You can amend the commit now, with\n" | |
2806 | "\n" | |
2807 | " git commit --amend %s\n" | |
2808 | "\n" | |
2809 | "Once you are satisfied with your changes, run\n" | |
2810 | "\n" | |
2811 | " git rebase --continue\n"), | |
2812 | gpg_sign_opt_quoted(opts)); | |
2813 | } else if (exit_code) { | |
2814 | if (commit) | |
2815 | fprintf_ln(stderr, _("Could not apply %s... %.*s"), | |
2816 | short_commit_name(commit), subject_len, subject); | |
2817 | else | |
2818 | /* | |
2819 | * We don't have the hash of the parent so | |
2820 | * just print the line from the todo file. | |
2821 | */ | |
2822 | fprintf_ln(stderr, _("Could not merge %.*s"), | |
2823 | subject_len, subject); | |
2824 | } | |
2825 | ||
2826 | return exit_code; | |
2827 | } | |
2828 | ||
2829 | static int error_failed_squash(struct repository *r, | |
2830 | struct commit *commit, | |
2831 | struct replay_opts *opts, | |
2832 | int subject_len, | |
2833 | const char *subject) | |
2834 | { | |
2835 | if (copy_file(rebase_path_message(), rebase_path_squash_msg(), 0666)) | |
2836 | return error(_("could not copy '%s' to '%s'"), | |
2837 | rebase_path_squash_msg(), rebase_path_message()); | |
2838 | unlink(git_path_merge_msg(r)); | |
2839 | if (copy_file(git_path_merge_msg(r), rebase_path_message(), 0666)) | |
2840 | return error(_("could not copy '%s' to '%s'"), | |
2841 | rebase_path_message(), | |
2842 | git_path_merge_msg(r)); | |
2843 | return error_with_patch(r, commit, subject, subject_len, opts, 1, 0); | |
2844 | } | |
2845 | ||
2846 | static int do_exec(struct repository *r, const char *command_line) | |
2847 | { | |
2848 | struct argv_array child_env = ARGV_ARRAY_INIT; | |
2849 | const char *child_argv[] = { NULL, NULL }; | |
2850 | int dirty, status; | |
2851 | ||
2852 | fprintf(stderr, "Executing: %s\n", command_line); | |
2853 | child_argv[0] = command_line; | |
2854 | argv_array_pushf(&child_env, "GIT_DIR=%s", absolute_path(get_git_dir())); | |
2855 | argv_array_pushf(&child_env, "GIT_WORK_TREE=%s", | |
2856 | absolute_path(get_git_work_tree())); | |
2857 | status = run_command_v_opt_cd_env(child_argv, RUN_USING_SHELL, NULL, | |
2858 | child_env.argv); | |
2859 | ||
2860 | /* force re-reading of the cache */ | |
2861 | if (discard_index(r->index) < 0 || read_index(r->index) < 0) | |
2862 | return error(_("could not read index")); | |
2863 | ||
2864 | dirty = require_clean_work_tree(r, "rebase", NULL, 1, 1); | |
2865 | ||
2866 | if (status) { | |
2867 | warning(_("execution failed: %s\n%s" | |
2868 | "You can fix the problem, and then run\n" | |
2869 | "\n" | |
2870 | " git rebase --continue\n" | |
2871 | "\n"), | |
2872 | command_line, | |
2873 | dirty ? N_("and made changes to the index and/or the " | |
2874 | "working tree\n") : ""); | |
2875 | if (status == 127) | |
2876 | /* command not found */ | |
2877 | status = 1; | |
2878 | } else if (dirty) { | |
2879 | warning(_("execution succeeded: %s\nbut " | |
2880 | "left changes to the index and/or the working tree\n" | |
2881 | "Commit or stash your changes, and then run\n" | |
2882 | "\n" | |
2883 | " git rebase --continue\n" | |
2884 | "\n"), command_line); | |
2885 | status = 1; | |
2886 | } | |
2887 | ||
2888 | argv_array_clear(&child_env); | |
2889 | ||
2890 | return status; | |
2891 | } | |
2892 | ||
2893 | static int safe_append(const char *filename, const char *fmt, ...) | |
2894 | { | |
2895 | va_list ap; | |
2896 | struct lock_file lock = LOCK_INIT; | |
2897 | int fd = hold_lock_file_for_update(&lock, filename, | |
2898 | LOCK_REPORT_ON_ERROR); | |
2899 | struct strbuf buf = STRBUF_INIT; | |
2900 | ||
2901 | if (fd < 0) | |
2902 | return -1; | |
2903 | ||
2904 | if (strbuf_read_file(&buf, filename, 0) < 0 && errno != ENOENT) { | |
2905 | error_errno(_("could not read '%s'"), filename); | |
2906 | rollback_lock_file(&lock); | |
2907 | return -1; | |
2908 | } | |
2909 | strbuf_complete(&buf, '\n'); | |
2910 | va_start(ap, fmt); | |
2911 | strbuf_vaddf(&buf, fmt, ap); | |
2912 | va_end(ap); | |
2913 | ||
2914 | if (write_in_full(fd, buf.buf, buf.len) < 0) { | |
2915 | error_errno(_("could not write to '%s'"), filename); | |
2916 | strbuf_release(&buf); | |
2917 | rollback_lock_file(&lock); | |
2918 | return -1; | |
2919 | } | |
2920 | if (commit_lock_file(&lock) < 0) { | |
2921 | strbuf_release(&buf); | |
2922 | rollback_lock_file(&lock); | |
2923 | return error(_("failed to finalize '%s'"), filename); | |
2924 | } | |
2925 | ||
2926 | strbuf_release(&buf); | |
2927 | return 0; | |
2928 | } | |
2929 | ||
2930 | static int do_label(struct repository *r, const char *name, int len) | |
2931 | { | |
2932 | struct ref_store *refs = get_main_ref_store(r); | |
2933 | struct ref_transaction *transaction; | |
2934 | struct strbuf ref_name = STRBUF_INIT, err = STRBUF_INIT; | |
2935 | struct strbuf msg = STRBUF_INIT; | |
2936 | int ret = 0; | |
2937 | struct object_id head_oid; | |
2938 | ||
2939 | if (len == 1 && *name == '#') | |
2940 | return error(_("illegal label name: '%.*s'"), len, name); | |
2941 | ||
2942 | strbuf_addf(&ref_name, "refs/rewritten/%.*s", len, name); | |
2943 | strbuf_addf(&msg, "rebase -i (label) '%.*s'", len, name); | |
2944 | ||
2945 | transaction = ref_store_transaction_begin(refs, &err); | |
2946 | if (!transaction) { | |
2947 | error("%s", err.buf); | |
2948 | ret = -1; | |
2949 | } else if (get_oid("HEAD", &head_oid)) { | |
2950 | error(_("could not read HEAD")); | |
2951 | ret = -1; | |
2952 | } else if (ref_transaction_update(transaction, ref_name.buf, &head_oid, | |
2953 | NULL, 0, msg.buf, &err) < 0 || | |
2954 | ref_transaction_commit(transaction, &err)) { | |
2955 | error("%s", err.buf); | |
2956 | ret = -1; | |
2957 | } | |
2958 | ref_transaction_free(transaction); | |
2959 | strbuf_release(&err); | |
2960 | strbuf_release(&msg); | |
2961 | ||
2962 | if (!ret) | |
2963 | ret = safe_append(rebase_path_refs_to_delete(), | |
2964 | "%s\n", ref_name.buf); | |
2965 | strbuf_release(&ref_name); | |
2966 | ||
2967 | return ret; | |
2968 | } | |
2969 | ||
2970 | static const char *reflog_message(struct replay_opts *opts, | |
2971 | const char *sub_action, const char *fmt, ...); | |
2972 | ||
2973 | static int do_reset(struct repository *r, | |
2974 | const char *name, int len, | |
2975 | struct replay_opts *opts) | |
2976 | { | |
2977 | struct strbuf ref_name = STRBUF_INIT; | |
2978 | struct object_id oid; | |
2979 | struct lock_file lock = LOCK_INIT; | |
2980 | struct tree_desc desc; | |
2981 | struct tree *tree; | |
2982 | struct unpack_trees_options unpack_tree_opts; | |
2983 | int ret = 0; | |
2984 | ||
2985 | if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) | |
2986 | return -1; | |
2987 | ||
2988 | if (len == 10 && !strncmp("[new root]", name, len)) { | |
2989 | if (!opts->have_squash_onto) { | |
2990 | const char *hex; | |
2991 | if (commit_tree("", 0, the_hash_algo->empty_tree, | |
2992 | NULL, &opts->squash_onto, | |
2993 | NULL, NULL)) | |
2994 | return error(_("writing fake root commit")); | |
2995 | opts->have_squash_onto = 1; | |
2996 | hex = oid_to_hex(&opts->squash_onto); | |
2997 | if (write_message(hex, strlen(hex), | |
2998 | rebase_path_squash_onto(), 0)) | |
2999 | return error(_("writing squash-onto")); | |
3000 | } | |
3001 | oidcpy(&oid, &opts->squash_onto); | |
3002 | } else { | |
3003 | int i; | |
3004 | ||
3005 | /* Determine the length of the label */ | |
3006 | for (i = 0; i < len; i++) | |
3007 | if (isspace(name[i])) | |
3008 | break; | |
3009 | len = i; | |
3010 | ||
3011 | strbuf_addf(&ref_name, "refs/rewritten/%.*s", len, name); | |
3012 | if (get_oid(ref_name.buf, &oid) && | |
3013 | get_oid(ref_name.buf + strlen("refs/rewritten/"), &oid)) { | |
3014 | error(_("could not read '%s'"), ref_name.buf); | |
3015 | rollback_lock_file(&lock); | |
3016 | strbuf_release(&ref_name); | |
3017 | return -1; | |
3018 | } | |
3019 | } | |
3020 | ||
3021 | memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts)); | |
3022 | setup_unpack_trees_porcelain(&unpack_tree_opts, "reset"); | |
3023 | unpack_tree_opts.head_idx = 1; | |
3024 | unpack_tree_opts.src_index = r->index; | |
3025 | unpack_tree_opts.dst_index = r->index; | |
3026 | unpack_tree_opts.fn = oneway_merge; | |
3027 | unpack_tree_opts.merge = 1; | |
3028 | unpack_tree_opts.update = 1; | |
3029 | ||
3030 | if (read_index_unmerged(r->index)) { | |
3031 | rollback_lock_file(&lock); | |
3032 | strbuf_release(&ref_name); | |
3033 | return error_resolve_conflict(_(action_name(opts))); | |
3034 | } | |
3035 | ||
3036 | if (!fill_tree_descriptor(&desc, &oid)) { | |
3037 | error(_("failed to find tree of %s"), oid_to_hex(&oid)); | |
3038 | rollback_lock_file(&lock); | |
3039 | free((void *)desc.buffer); | |
3040 | strbuf_release(&ref_name); | |
3041 | return -1; | |
3042 | } | |
3043 | ||
3044 | if (unpack_trees(1, &desc, &unpack_tree_opts)) { | |
3045 | rollback_lock_file(&lock); | |
3046 | free((void *)desc.buffer); | |
3047 | strbuf_release(&ref_name); | |
3048 | return -1; | |
3049 | } | |
3050 | ||
3051 | tree = parse_tree_indirect(&oid); | |
3052 | prime_cache_tree(r, r->index, tree); | |
3053 | ||
3054 | if (write_locked_index(r->index, &lock, COMMIT_LOCK) < 0) | |
3055 | ret = error(_("could not write index")); | |
3056 | free((void *)desc.buffer); | |
3057 | ||
3058 | if (!ret) | |
3059 | ret = update_ref(reflog_message(opts, "reset", "'%.*s'", | |
3060 | len, name), "HEAD", &oid, | |
3061 | NULL, 0, UPDATE_REFS_MSG_ON_ERR); | |
3062 | ||
3063 | strbuf_release(&ref_name); | |
3064 | return ret; | |
3065 | } | |
3066 | ||
3067 | static struct commit *lookup_label(const char *label, int len, | |
3068 | struct strbuf *buf) | |
3069 | { | |
3070 | struct commit *commit; | |
3071 | ||
3072 | strbuf_reset(buf); | |
3073 | strbuf_addf(buf, "refs/rewritten/%.*s", len, label); | |
3074 | commit = lookup_commit_reference_by_name(buf->buf); | |
3075 | if (!commit) { | |
3076 | /* fall back to non-rewritten ref or commit */ | |
3077 | strbuf_splice(buf, 0, strlen("refs/rewritten/"), "", 0); | |
3078 | commit = lookup_commit_reference_by_name(buf->buf); | |
3079 | } | |
3080 | ||
3081 | if (!commit) | |
3082 | error(_("could not resolve '%s'"), buf->buf); | |
3083 | ||
3084 | return commit; | |
3085 | } | |
3086 | ||
3087 | static int do_merge(struct repository *r, | |
3088 | struct commit *commit, | |
3089 | const char *arg, int arg_len, | |
3090 | int flags, struct replay_opts *opts) | |
3091 | { | |
3092 | int run_commit_flags = (flags & TODO_EDIT_MERGE_MSG) ? | |
3093 | EDIT_MSG | VERIFY_MSG : 0; | |
3094 | struct strbuf ref_name = STRBUF_INIT; | |
3095 | struct commit *head_commit, *merge_commit, *i; | |
3096 | struct commit_list *bases, *j, *reversed = NULL; | |
3097 | struct commit_list *to_merge = NULL, **tail = &to_merge; | |
3098 | struct merge_options o; | |
3099 | int merge_arg_len, oneline_offset, can_fast_forward, ret, k; | |
3100 | static struct lock_file lock; | |
3101 | const char *p; | |
3102 | ||
3103 | if (hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) { | |
3104 | ret = -1; | |
3105 | goto leave_merge; | |
3106 | } | |
3107 | ||
3108 | head_commit = lookup_commit_reference_by_name("HEAD"); | |
3109 | if (!head_commit) { | |
3110 | ret = error(_("cannot merge without a current revision")); | |
3111 | goto leave_merge; | |
3112 | } | |
3113 | ||
3114 | /* | |
3115 | * For octopus merges, the arg starts with the list of revisions to be | |
3116 | * merged. The list is optionally followed by '#' and the oneline. | |
3117 | */ | |
3118 | merge_arg_len = oneline_offset = arg_len; | |
3119 | for (p = arg; p - arg < arg_len; p += strspn(p, " \t\n")) { | |
3120 | if (!*p) | |
3121 | break; | |
3122 | if (*p == '#' && (!p[1] || isspace(p[1]))) { | |
3123 | p += 1 + strspn(p + 1, " \t\n"); | |
3124 | oneline_offset = p - arg; | |
3125 | break; | |
3126 | } | |
3127 | k = strcspn(p, " \t\n"); | |
3128 | if (!k) | |
3129 | continue; | |
3130 | merge_commit = lookup_label(p, k, &ref_name); | |
3131 | if (!merge_commit) { | |
3132 | ret = error(_("unable to parse '%.*s'"), k, p); | |
3133 | goto leave_merge; | |
3134 | } | |
3135 | tail = &commit_list_insert(merge_commit, tail)->next; | |
3136 | p += k; | |
3137 | merge_arg_len = p - arg; | |
3138 | } | |
3139 | ||
3140 | if (!to_merge) { | |
3141 | ret = error(_("nothing to merge: '%.*s'"), arg_len, arg); | |
3142 | goto leave_merge; | |
3143 | } | |
3144 | ||
3145 | if (opts->have_squash_onto && | |
3146 | oideq(&head_commit->object.oid, &opts->squash_onto)) { | |
3147 | /* | |
3148 | * When the user tells us to "merge" something into a | |
3149 | * "[new root]", let's simply fast-forward to the merge head. | |
3150 | */ | |
3151 | rollback_lock_file(&lock); | |
3152 | if (to_merge->next) | |
3153 | ret = error(_("octopus merge cannot be executed on " | |
3154 | "top of a [new root]")); | |
3155 | else | |
3156 | ret = fast_forward_to(r, &to_merge->item->object.oid, | |
3157 | &head_commit->object.oid, 0, | |
3158 | opts); | |
3159 | goto leave_merge; | |
3160 | } | |
3161 | ||
3162 | if (commit) { | |
3163 | const char *message = get_commit_buffer(commit, NULL); | |
3164 | const char *body; | |
3165 | int len; | |
3166 | ||
3167 | if (!message) { | |
3168 | ret = error(_("could not get commit message of '%s'"), | |
3169 | oid_to_hex(&commit->object.oid)); | |
3170 | goto leave_merge; | |
3171 | } | |
3172 | write_author_script(message); | |
3173 | find_commit_subject(message, &body); | |
3174 | len = strlen(body); | |
3175 | ret = write_message(body, len, git_path_merge_msg(r), 0); | |
3176 | unuse_commit_buffer(commit, message); | |
3177 | if (ret) { | |
3178 | error_errno(_("could not write '%s'"), | |
3179 | git_path_merge_msg(r)); | |
3180 | goto leave_merge; | |
3181 | } | |
3182 | } else { | |
3183 | struct strbuf buf = STRBUF_INIT; | |
3184 | int len; | |
3185 | ||
3186 | strbuf_addf(&buf, "author %s", git_author_info(0)); | |
3187 | write_author_script(buf.buf); | |
3188 | strbuf_reset(&buf); | |
3189 | ||
3190 | if (oneline_offset < arg_len) { | |
3191 | p = arg + oneline_offset; | |
3192 | len = arg_len - oneline_offset; | |
3193 | } else { | |
3194 | strbuf_addf(&buf, "Merge %s '%.*s'", | |
3195 | to_merge->next ? "branches" : "branch", | |
3196 | merge_arg_len, arg); | |
3197 | p = buf.buf; | |
3198 | len = buf.len; | |
3199 | } | |
3200 | ||
3201 | ret = write_message(p, len, git_path_merge_msg(r), 0); | |
3202 | strbuf_release(&buf); | |
3203 | if (ret) { | |
3204 | error_errno(_("could not write '%s'"), | |
3205 | git_path_merge_msg(r)); | |
3206 | goto leave_merge; | |
3207 | } | |
3208 | } | |
3209 | ||
3210 | /* | |
3211 | * If HEAD is not identical to the first parent of the original merge | |
3212 | * commit, we cannot fast-forward. | |
3213 | */ | |
3214 | can_fast_forward = opts->allow_ff && commit && commit->parents && | |
3215 | oideq(&commit->parents->item->object.oid, | |
3216 | &head_commit->object.oid); | |
3217 | ||
3218 | /* | |
3219 | * If any merge head is different from the original one, we cannot | |
3220 | * fast-forward. | |
3221 | */ | |
3222 | if (can_fast_forward) { | |
3223 | struct commit_list *p = commit->parents->next; | |
3224 | ||
3225 | for (j = to_merge; j && p; j = j->next, p = p->next) | |
3226 | if (!oideq(&j->item->object.oid, | |
3227 | &p->item->object.oid)) { | |
3228 | can_fast_forward = 0; | |
3229 | break; | |
3230 | } | |
3231 | /* | |
3232 | * If the number of merge heads differs from the original merge | |
3233 | * commit, we cannot fast-forward. | |
3234 | */ | |
3235 | if (j || p) | |
3236 | can_fast_forward = 0; | |
3237 | } | |
3238 | ||
3239 | if (can_fast_forward) { | |
3240 | rollback_lock_file(&lock); | |
3241 | ret = fast_forward_to(r, &commit->object.oid, | |
3242 | &head_commit->object.oid, 0, opts); | |
3243 | goto leave_merge; | |
3244 | } | |
3245 | ||
3246 | if (to_merge->next) { | |
3247 | /* Octopus merge */ | |
3248 | struct child_process cmd = CHILD_PROCESS_INIT; | |
3249 | ||
3250 | if (read_env_script(&cmd.env_array)) { | |
3251 | const char *gpg_opt = gpg_sign_opt_quoted(opts); | |
3252 | ||
3253 | ret = error(_(staged_changes_advice), gpg_opt, gpg_opt); | |
3254 | goto leave_merge; | |
3255 | } | |
3256 | ||
3257 | cmd.git_cmd = 1; | |
3258 | argv_array_push(&cmd.args, "merge"); | |
3259 | argv_array_push(&cmd.args, "-s"); | |
3260 | argv_array_push(&cmd.args, "octopus"); | |
3261 | argv_array_push(&cmd.args, "--no-edit"); | |
3262 | argv_array_push(&cmd.args, "--no-ff"); | |
3263 | argv_array_push(&cmd.args, "--no-log"); | |
3264 | argv_array_push(&cmd.args, "--no-stat"); | |
3265 | argv_array_push(&cmd.args, "-F"); | |
3266 | argv_array_push(&cmd.args, git_path_merge_msg(r)); | |
3267 | if (opts->gpg_sign) | |
3268 | argv_array_push(&cmd.args, opts->gpg_sign); | |
3269 | ||
3270 | /* Add the tips to be merged */ | |
3271 | for (j = to_merge; j; j = j->next) | |
3272 | argv_array_push(&cmd.args, | |
3273 | oid_to_hex(&j->item->object.oid)); | |
3274 | ||
3275 | strbuf_release(&ref_name); | |
3276 | unlink(git_path_cherry_pick_head(r)); | |
3277 | rollback_lock_file(&lock); | |
3278 | ||
3279 | rollback_lock_file(&lock); | |
3280 | ret = run_command(&cmd); | |
3281 | ||
3282 | /* force re-reading of the cache */ | |
3283 | if (!ret && (discard_index(r->index) < 0 || | |
3284 | read_index(r->index) < 0)) | |
3285 | ret = error(_("could not read index")); | |
3286 | goto leave_merge; | |
3287 | } | |
3288 | ||
3289 | merge_commit = to_merge->item; | |
3290 | bases = get_merge_bases(head_commit, merge_commit); | |
3291 | if (bases && oideq(&merge_commit->object.oid, | |
3292 | &bases->item->object.oid)) { | |
3293 | ret = 0; | |
3294 | /* skip merging an ancestor of HEAD */ | |
3295 | goto leave_merge; | |
3296 | } | |
3297 | ||
3298 | write_message(oid_to_hex(&merge_commit->object.oid), GIT_SHA1_HEXSZ, | |
3299 | git_path_merge_head(r), 0); | |
3300 | write_message("no-ff", 5, git_path_merge_mode(r), 0); | |
3301 | ||
3302 | for (j = bases; j; j = j->next) | |
3303 | commit_list_insert(j->item, &reversed); | |
3304 | free_commit_list(bases); | |
3305 | ||
3306 | read_index(r->index); | |
3307 | init_merge_options(&o); | |
3308 | o.branch1 = "HEAD"; | |
3309 | o.branch2 = ref_name.buf; | |
3310 | o.buffer_output = 2; | |
3311 | ||
3312 | ret = merge_recursive(&o, head_commit, merge_commit, reversed, &i); | |
3313 | if (ret <= 0) | |
3314 | fputs(o.obuf.buf, stdout); | |
3315 | strbuf_release(&o.obuf); | |
3316 | if (ret < 0) { | |
3317 | error(_("could not even attempt to merge '%.*s'"), | |
3318 | merge_arg_len, arg); | |
3319 | goto leave_merge; | |
3320 | } | |
3321 | /* | |
3322 | * The return value of merge_recursive() is 1 on clean, and 0 on | |
3323 | * unclean merge. | |
3324 | * | |
3325 | * Let's reverse that, so that do_merge() returns 0 upon success and | |
3326 | * 1 upon failed merge (keeping the return value -1 for the cases where | |
3327 | * we will want to reschedule the `merge` command). | |
3328 | */ | |
3329 | ret = !ret; | |
3330 | ||
3331 | if (r->index->cache_changed && | |
3332 | write_locked_index(r->index, &lock, COMMIT_LOCK)) { | |
3333 | ret = error(_("merge: Unable to write new index file")); | |
3334 | goto leave_merge; | |
3335 | } | |
3336 | ||
3337 | rollback_lock_file(&lock); | |
3338 | if (ret) | |
3339 | repo_rerere(r, opts->allow_rerere_auto); | |
3340 | else | |
3341 | /* | |
3342 | * In case of problems, we now want to return a positive | |
3343 | * value (a negative one would indicate that the `merge` | |
3344 | * command needs to be rescheduled). | |
3345 | */ | |
3346 | ret = !!run_git_commit(r, git_path_merge_msg(r), opts, | |
3347 | run_commit_flags); | |
3348 | ||
3349 | leave_merge: | |
3350 | strbuf_release(&ref_name); | |
3351 | rollback_lock_file(&lock); | |
3352 | free_commit_list(to_merge); | |
3353 | return ret; | |
3354 | } | |
3355 | ||
3356 | static int is_final_fixup(struct todo_list *todo_list) | |
3357 | { | |
3358 | int i = todo_list->current; | |
3359 | ||
3360 | if (!is_fixup(todo_list->items[i].command)) | |
3361 | return 0; | |
3362 | ||
3363 | while (++i < todo_list->nr) | |
3364 | if (is_fixup(todo_list->items[i].command)) | |
3365 | return 0; | |
3366 | else if (!is_noop(todo_list->items[i].command)) | |
3367 | break; | |
3368 | return 1; | |
3369 | } | |
3370 | ||
3371 | static enum todo_command peek_command(struct todo_list *todo_list, int offset) | |
3372 | { | |
3373 | int i; | |
3374 | ||
3375 | for (i = todo_list->current + offset; i < todo_list->nr; i++) | |
3376 | if (!is_noop(todo_list->items[i].command)) | |
3377 | return todo_list->items[i].command; | |
3378 | ||
3379 | return -1; | |
3380 | } | |
3381 | ||
3382 | static int apply_autostash(struct replay_opts *opts) | |
3383 | { | |
3384 | struct strbuf stash_sha1 = STRBUF_INIT; | |
3385 | struct child_process child = CHILD_PROCESS_INIT; | |
3386 | int ret = 0; | |
3387 | ||
3388 | if (!read_oneliner(&stash_sha1, rebase_path_autostash(), 1)) { | |
3389 | strbuf_release(&stash_sha1); | |
3390 | return 0; | |
3391 | } | |
3392 | strbuf_trim(&stash_sha1); | |
3393 | ||
3394 | child.git_cmd = 1; | |
3395 | child.no_stdout = 1; | |
3396 | child.no_stderr = 1; | |
3397 | argv_array_push(&child.args, "stash"); | |
3398 | argv_array_push(&child.args, "apply"); | |
3399 | argv_array_push(&child.args, stash_sha1.buf); | |
3400 | if (!run_command(&child)) | |
3401 | fprintf(stderr, _("Applied autostash.\n")); | |
3402 | else { | |
3403 | struct child_process store = CHILD_PROCESS_INIT; | |
3404 | ||
3405 | store.git_cmd = 1; | |
3406 | argv_array_push(&store.args, "stash"); | |
3407 | argv_array_push(&store.args, "store"); | |
3408 | argv_array_push(&store.args, "-m"); | |
3409 | argv_array_push(&store.args, "autostash"); | |
3410 | argv_array_push(&store.args, "-q"); | |
3411 | argv_array_push(&store.args, stash_sha1.buf); | |
3412 | if (run_command(&store)) | |
3413 | ret = error(_("cannot store %s"), stash_sha1.buf); | |
3414 | else | |
3415 | fprintf(stderr, | |
3416 | _("Applying autostash resulted in conflicts.\n" | |
3417 | "Your changes are safe in the stash.\n" | |
3418 | "You can run \"git stash pop\" or" | |
3419 | " \"git stash drop\" at any time.\n")); | |
3420 | } | |
3421 | ||
3422 | strbuf_release(&stash_sha1); | |
3423 | return ret; | |
3424 | } | |
3425 | ||
3426 | static const char *reflog_message(struct replay_opts *opts, | |
3427 | const char *sub_action, const char *fmt, ...) | |
3428 | { | |
3429 | va_list ap; | |
3430 | static struct strbuf buf = STRBUF_INIT; | |
3431 | ||
3432 | va_start(ap, fmt); | |
3433 | strbuf_reset(&buf); | |
3434 | strbuf_addstr(&buf, action_name(opts)); | |
3435 | if (sub_action) | |
3436 | strbuf_addf(&buf, " (%s)", sub_action); | |
3437 | if (fmt) { | |
3438 | strbuf_addstr(&buf, ": "); | |
3439 | strbuf_vaddf(&buf, fmt, ap); | |
3440 | } | |
3441 | va_end(ap); | |
3442 | ||
3443 | return buf.buf; | |
3444 | } | |
3445 | ||
3446 | static int run_git_checkout(struct replay_opts *opts, const char *commit, | |
3447 | const char *action) | |
3448 | { | |
3449 | struct child_process cmd = CHILD_PROCESS_INIT; | |
3450 | ||
3451 | cmd.git_cmd = 1; | |
3452 | ||
3453 | argv_array_push(&cmd.args, "checkout"); | |
3454 | argv_array_push(&cmd.args, commit); | |
3455 | argv_array_pushf(&cmd.env_array, GIT_REFLOG_ACTION "=%s", action); | |
3456 | ||
3457 | if (opts->verbose) | |
3458 | return run_command(&cmd); | |
3459 | else | |
3460 | return run_command_silent_on_success(&cmd); | |
3461 | } | |
3462 | ||
3463 | int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit) | |
3464 | { | |
3465 | const char *action; | |
3466 | ||
3467 | if (commit && *commit) { | |
3468 | action = reflog_message(opts, "start", "checkout %s", commit); | |
3469 | if (run_git_checkout(opts, commit, action)) | |
3470 | return error(_("could not checkout %s"), commit); | |
3471 | } | |
3472 | ||
3473 | return 0; | |
3474 | } | |
3475 | ||
3476 | static int checkout_onto(struct replay_opts *opts, | |
3477 | const char *onto_name, const char *onto, | |
3478 | const char *orig_head) | |
3479 | { | |
3480 | struct object_id oid; | |
3481 | const char *action = reflog_message(opts, "start", "checkout %s", onto_name); | |
3482 | ||
3483 | if (get_oid(orig_head, &oid)) | |
3484 | return error(_("%s: not a valid OID"), orig_head); | |
3485 | ||
3486 | if (run_git_checkout(opts, onto, action)) { | |
3487 | apply_autostash(opts); | |
3488 | sequencer_remove_state(opts); | |
3489 | return error(_("could not detach HEAD")); | |
3490 | } | |
3491 | ||
3492 | return update_ref(NULL, "ORIG_HEAD", &oid, NULL, 0, UPDATE_REFS_MSG_ON_ERR); | |
3493 | } | |
3494 | ||
3495 | static int stopped_at_head(struct repository *r) | |
3496 | { | |
3497 | struct object_id head; | |
3498 | struct commit *commit; | |
3499 | struct commit_message message; | |
3500 | ||
3501 | if (get_oid("HEAD", &head) || | |
3502 | !(commit = lookup_commit(r, &head)) || | |
3503 | parse_commit(commit) || get_message(commit, &message)) | |
3504 | fprintf(stderr, _("Stopped at HEAD\n")); | |
3505 | else { | |
3506 | fprintf(stderr, _("Stopped at %s\n"), message.label); | |
3507 | free_message(commit, &message); | |
3508 | } | |
3509 | return 0; | |
3510 | ||
3511 | } | |
3512 | ||
3513 | static const char rescheduled_advice[] = | |
3514 | N_("Could not execute the todo command\n" | |
3515 | "\n" | |
3516 | " %.*s" | |
3517 | "\n" | |
3518 | "It has been rescheduled; To edit the command before continuing, please\n" | |
3519 | "edit the todo list first:\n" | |
3520 | "\n" | |
3521 | " git rebase --edit-todo\n" | |
3522 | " git rebase --continue\n"); | |
3523 | ||
3524 | static int pick_commits(struct repository *r, | |
3525 | struct todo_list *todo_list, | |
3526 | struct replay_opts *opts) | |
3527 | { | |
3528 | int res = 0, reschedule = 0; | |
3529 | ||
3530 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
3531 | if (opts->allow_ff) | |
3532 | assert(!(opts->signoff || opts->no_commit || | |
3533 | opts->record_origin || opts->edit)); | |
3534 | if (read_and_refresh_cache(r, opts)) | |
3535 | return -1; | |
3536 | ||
3537 | while (todo_list->current < todo_list->nr) { | |
3538 | struct todo_item *item = todo_list->items + todo_list->current; | |
3539 | if (save_todo(todo_list, opts)) | |
3540 | return -1; | |
3541 | if (is_rebase_i(opts)) { | |
3542 | if (item->command != TODO_COMMENT) { | |
3543 | FILE *f = fopen(rebase_path_msgnum(), "w"); | |
3544 | ||
3545 | todo_list->done_nr++; | |
3546 | ||
3547 | if (f) { | |
3548 | fprintf(f, "%d\n", todo_list->done_nr); | |
3549 | fclose(f); | |
3550 | } | |
3551 | fprintf(stderr, "Rebasing (%d/%d)%s", | |
3552 | todo_list->done_nr, | |
3553 | todo_list->total_nr, | |
3554 | opts->verbose ? "\n" : "\r"); | |
3555 | } | |
3556 | unlink(rebase_path_message()); | |
3557 | unlink(rebase_path_author_script()); | |
3558 | unlink(rebase_path_stopped_sha()); | |
3559 | unlink(rebase_path_amend()); | |
3560 | unlink(git_path_merge_head(the_repository)); | |
3561 | delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); | |
3562 | ||
3563 | if (item->command == TODO_BREAK) | |
3564 | return stopped_at_head(r); | |
3565 | } | |
3566 | if (item->command <= TODO_SQUASH) { | |
3567 | if (is_rebase_i(opts)) | |
3568 | setenv("GIT_REFLOG_ACTION", reflog_message(opts, | |
3569 | command_to_string(item->command), NULL), | |
3570 | 1); | |
3571 | res = do_pick_commit(r, item->command, item->commit, | |
3572 | opts, is_final_fixup(todo_list)); | |
3573 | if (is_rebase_i(opts) && res < 0) { | |
3574 | /* Reschedule */ | |
3575 | advise(_(rescheduled_advice), | |
3576 | get_item_line_length(todo_list, | |
3577 | todo_list->current), | |
3578 | get_item_line(todo_list, | |
3579 | todo_list->current)); | |
3580 | todo_list->current--; | |
3581 | if (save_todo(todo_list, opts)) | |
3582 | return -1; | |
3583 | } | |
3584 | if (item->command == TODO_EDIT) { | |
3585 | struct commit *commit = item->commit; | |
3586 | if (!res) | |
3587 | fprintf(stderr, | |
3588 | _("Stopped at %s... %.*s\n"), | |
3589 | short_commit_name(commit), | |
3590 | item->arg_len, item->arg); | |
3591 | return error_with_patch(r, commit, | |
3592 | item->arg, item->arg_len, opts, res, | |
3593 | !res); | |
3594 | } | |
3595 | if (is_rebase_i(opts) && !res) | |
3596 | record_in_rewritten(&item->commit->object.oid, | |
3597 | peek_command(todo_list, 1)); | |
3598 | if (res && is_fixup(item->command)) { | |
3599 | if (res == 1) | |
3600 | intend_to_amend(); | |
3601 | return error_failed_squash(r, item->commit, opts, | |
3602 | item->arg_len, item->arg); | |
3603 | } else if (res && is_rebase_i(opts) && item->commit) { | |
3604 | int to_amend = 0; | |
3605 | struct object_id oid; | |
3606 | ||
3607 | /* | |
3608 | * If we are rewording and have either | |
3609 | * fast-forwarded already, or are about to | |
3610 | * create a new root commit, we want to amend, | |
3611 | * otherwise we do not. | |
3612 | */ | |
3613 | if (item->command == TODO_REWORD && | |
3614 | !get_oid("HEAD", &oid) && | |
3615 | (oideq(&item->commit->object.oid, &oid) || | |
3616 | (opts->have_squash_onto && | |
3617 | oideq(&opts->squash_onto, &oid)))) | |
3618 | to_amend = 1; | |
3619 | ||
3620 | return res | error_with_patch(r, item->commit, | |
3621 | item->arg, item->arg_len, opts, | |
3622 | res, to_amend); | |
3623 | } | |
3624 | } else if (item->command == TODO_EXEC) { | |
3625 | char *end_of_arg = (char *)(item->arg + item->arg_len); | |
3626 | int saved = *end_of_arg; | |
3627 | struct stat st; | |
3628 | ||
3629 | *end_of_arg = '\0'; | |
3630 | res = do_exec(r, item->arg); | |
3631 | *end_of_arg = saved; | |
3632 | ||
3633 | /* Reread the todo file if it has changed. */ | |
3634 | if (res) | |
3635 | ; /* fall through */ | |
3636 | else if (stat(get_todo_path(opts), &st)) | |
3637 | res = error_errno(_("could not stat '%s'"), | |
3638 | get_todo_path(opts)); | |
3639 | else if (match_stat_data(&todo_list->stat, &st)) { | |
3640 | todo_list_release(todo_list); | |
3641 | if (read_populate_todo(r, todo_list, opts)) | |
3642 | res = -1; /* message was printed */ | |
3643 | /* `current` will be incremented below */ | |
3644 | todo_list->current = -1; | |
3645 | } | |
3646 | } else if (item->command == TODO_LABEL) { | |
3647 | if ((res = do_label(r, item->arg, item->arg_len))) | |
3648 | reschedule = 1; | |
3649 | } else if (item->command == TODO_RESET) { | |
3650 | if ((res = do_reset(r, item->arg, item->arg_len, opts))) | |
3651 | reschedule = 1; | |
3652 | } else if (item->command == TODO_MERGE) { | |
3653 | if ((res = do_merge(r, item->commit, | |
3654 | item->arg, item->arg_len, | |
3655 | item->flags, opts)) < 0) | |
3656 | reschedule = 1; | |
3657 | else if (item->commit) | |
3658 | record_in_rewritten(&item->commit->object.oid, | |
3659 | peek_command(todo_list, 1)); | |
3660 | if (res > 0) | |
3661 | /* failed with merge conflicts */ | |
3662 | return error_with_patch(r, item->commit, | |
3663 | item->arg, | |
3664 | item->arg_len, opts, | |
3665 | res, 0); | |
3666 | } else if (!is_noop(item->command)) | |
3667 | return error(_("unknown command %d"), item->command); | |
3668 | ||
3669 | if (reschedule) { | |
3670 | advise(_(rescheduled_advice), | |
3671 | get_item_line_length(todo_list, | |
3672 | todo_list->current), | |
3673 | get_item_line(todo_list, todo_list->current)); | |
3674 | todo_list->current--; | |
3675 | if (save_todo(todo_list, opts)) | |
3676 | return -1; | |
3677 | if (item->commit) | |
3678 | return error_with_patch(r, | |
3679 | item->commit, | |
3680 | item->arg, | |
3681 | item->arg_len, opts, | |
3682 | res, 0); | |
3683 | } | |
3684 | ||
3685 | todo_list->current++; | |
3686 | if (res) | |
3687 | return res; | |
3688 | } | |
3689 | ||
3690 | if (is_rebase_i(opts)) { | |
3691 | struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; | |
3692 | struct stat st; | |
3693 | ||
3694 | /* Stopped in the middle, as planned? */ | |
3695 | if (todo_list->current < todo_list->nr) | |
3696 | return 0; | |
3697 | ||
3698 | if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && | |
3699 | starts_with(head_ref.buf, "refs/")) { | |
3700 | const char *msg; | |
3701 | struct object_id head, orig; | |
3702 | int res; | |
3703 | ||
3704 | if (get_oid("HEAD", &head)) { | |
3705 | res = error(_("cannot read HEAD")); | |
3706 | cleanup_head_ref: | |
3707 | strbuf_release(&head_ref); | |
3708 | strbuf_release(&buf); | |
3709 | return res; | |
3710 | } | |
3711 | if (!read_oneliner(&buf, rebase_path_orig_head(), 0) || | |
3712 | get_oid_hex(buf.buf, &orig)) { | |
3713 | res = error(_("could not read orig-head")); | |
3714 | goto cleanup_head_ref; | |
3715 | } | |
3716 | strbuf_reset(&buf); | |
3717 | if (!read_oneliner(&buf, rebase_path_onto(), 0)) { | |
3718 | res = error(_("could not read 'onto'")); | |
3719 | goto cleanup_head_ref; | |
3720 | } | |
3721 | msg = reflog_message(opts, "finish", "%s onto %s", | |
3722 | head_ref.buf, buf.buf); | |
3723 | if (update_ref(msg, head_ref.buf, &head, &orig, | |
3724 | REF_NO_DEREF, UPDATE_REFS_MSG_ON_ERR)) { | |
3725 | res = error(_("could not update %s"), | |
3726 | head_ref.buf); | |
3727 | goto cleanup_head_ref; | |
3728 | } | |
3729 | msg = reflog_message(opts, "finish", "returning to %s", | |
3730 | head_ref.buf); | |
3731 | if (create_symref("HEAD", head_ref.buf, msg)) { | |
3732 | res = error(_("could not update HEAD to %s"), | |
3733 | head_ref.buf); | |
3734 | goto cleanup_head_ref; | |
3735 | } | |
3736 | strbuf_reset(&buf); | |
3737 | } | |
3738 | ||
3739 | if (opts->verbose) { | |
3740 | struct rev_info log_tree_opt; | |
3741 | struct object_id orig, head; | |
3742 | ||
3743 | memset(&log_tree_opt, 0, sizeof(log_tree_opt)); | |
3744 | repo_init_revisions(r, &log_tree_opt, NULL); | |
3745 | log_tree_opt.diff = 1; | |
3746 | log_tree_opt.diffopt.output_format = | |
3747 | DIFF_FORMAT_DIFFSTAT; | |
3748 | log_tree_opt.disable_stdin = 1; | |
3749 | ||
3750 | if (read_oneliner(&buf, rebase_path_orig_head(), 0) && | |
3751 | !get_oid(buf.buf, &orig) && | |
3752 | !get_oid("HEAD", &head)) { | |
3753 | diff_tree_oid(&orig, &head, "", | |
3754 | &log_tree_opt.diffopt); | |
3755 | log_tree_diff_flush(&log_tree_opt); | |
3756 | } | |
3757 | } | |
3758 | flush_rewritten_pending(); | |
3759 | if (!stat(rebase_path_rewritten_list(), &st) && | |
3760 | st.st_size > 0) { | |
3761 | struct child_process child = CHILD_PROCESS_INIT; | |
3762 | const char *post_rewrite_hook = | |
3763 | find_hook("post-rewrite"); | |
3764 | ||
3765 | child.in = open(rebase_path_rewritten_list(), O_RDONLY); | |
3766 | child.git_cmd = 1; | |
3767 | argv_array_push(&child.args, "notes"); | |
3768 | argv_array_push(&child.args, "copy"); | |
3769 | argv_array_push(&child.args, "--for-rewrite=rebase"); | |
3770 | /* we don't care if this copying failed */ | |
3771 | run_command(&child); | |
3772 | ||
3773 | if (post_rewrite_hook) { | |
3774 | struct child_process hook = CHILD_PROCESS_INIT; | |
3775 | ||
3776 | hook.in = open(rebase_path_rewritten_list(), | |
3777 | O_RDONLY); | |
3778 | hook.stdout_to_stderr = 1; | |
3779 | argv_array_push(&hook.args, post_rewrite_hook); | |
3780 | argv_array_push(&hook.args, "rebase"); | |
3781 | /* we don't care if this hook failed */ | |
3782 | run_command(&hook); | |
3783 | } | |
3784 | } | |
3785 | apply_autostash(opts); | |
3786 | ||
3787 | fprintf(stderr, "Successfully rebased and updated %s.\n", | |
3788 | head_ref.buf); | |
3789 | ||
3790 | strbuf_release(&buf); | |
3791 | strbuf_release(&head_ref); | |
3792 | } | |
3793 | ||
3794 | /* | |
3795 | * Sequence of picks finished successfully; cleanup by | |
3796 | * removing the .git/sequencer directory | |
3797 | */ | |
3798 | return sequencer_remove_state(opts); | |
3799 | } | |
3800 | ||
3801 | static int continue_single_pick(struct repository *r) | |
3802 | { | |
3803 | const char *argv[] = { "commit", NULL }; | |
3804 | ||
3805 | if (!file_exists(git_path_cherry_pick_head(r)) && | |
3806 | !file_exists(git_path_revert_head(r))) | |
3807 | return error(_("no cherry-pick or revert in progress")); | |
3808 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
3809 | } | |
3810 | ||
3811 | static int commit_staged_changes(struct repository *r, | |
3812 | struct replay_opts *opts, | |
3813 | struct todo_list *todo_list) | |
3814 | { | |
3815 | unsigned int flags = ALLOW_EMPTY | EDIT_MSG; | |
3816 | unsigned int final_fixup = 0, is_clean; | |
3817 | ||
3818 | if (has_unstaged_changes(r, 1)) | |
3819 | return error(_("cannot rebase: You have unstaged changes.")); | |
3820 | ||
3821 | is_clean = !has_uncommitted_changes(r, 0); | |
3822 | ||
3823 | if (file_exists(rebase_path_amend())) { | |
3824 | struct strbuf rev = STRBUF_INIT; | |
3825 | struct object_id head, to_amend; | |
3826 | ||
3827 | if (get_oid("HEAD", &head)) | |
3828 | return error(_("cannot amend non-existing commit")); | |
3829 | if (!read_oneliner(&rev, rebase_path_amend(), 0)) | |
3830 | return error(_("invalid file: '%s'"), rebase_path_amend()); | |
3831 | if (get_oid_hex(rev.buf, &to_amend)) | |
3832 | return error(_("invalid contents: '%s'"), | |
3833 | rebase_path_amend()); | |
3834 | if (!is_clean && !oideq(&head, &to_amend)) | |
3835 | return error(_("\nYou have uncommitted changes in your " | |
3836 | "working tree. Please, commit them\n" | |
3837 | "first and then run 'git rebase " | |
3838 | "--continue' again.")); | |
3839 | /* | |
3840 | * When skipping a failed fixup/squash, we need to edit the | |
3841 | * commit message, the current fixup list and count, and if it | |
3842 | * was the last fixup/squash in the chain, we need to clean up | |
3843 | * the commit message and if there was a squash, let the user | |
3844 | * edit it. | |
3845 | */ | |
3846 | if (!is_clean || !opts->current_fixup_count) | |
3847 | ; /* this is not the final fixup */ | |
3848 | else if (!oideq(&head, &to_amend) || | |
3849 | !file_exists(rebase_path_stopped_sha())) { | |
3850 | /* was a final fixup or squash done manually? */ | |
3851 | if (!is_fixup(peek_command(todo_list, 0))) { | |
3852 | unlink(rebase_path_fixup_msg()); | |
3853 | unlink(rebase_path_squash_msg()); | |
3854 | unlink(rebase_path_current_fixups()); | |
3855 | strbuf_reset(&opts->current_fixups); | |
3856 | opts->current_fixup_count = 0; | |
3857 | } | |
3858 | } else { | |
3859 | /* we are in a fixup/squash chain */ | |
3860 | const char *p = opts->current_fixups.buf; | |
3861 | int len = opts->current_fixups.len; | |
3862 | ||
3863 | opts->current_fixup_count--; | |
3864 | if (!len) | |
3865 | BUG("Incorrect current_fixups:\n%s", p); | |
3866 | while (len && p[len - 1] != '\n') | |
3867 | len--; | |
3868 | strbuf_setlen(&opts->current_fixups, len); | |
3869 | if (write_message(p, len, rebase_path_current_fixups(), | |
3870 | 0) < 0) | |
3871 | return error(_("could not write file: '%s'"), | |
3872 | rebase_path_current_fixups()); | |
3873 | ||
3874 | /* | |
3875 | * If a fixup/squash in a fixup/squash chain failed, the | |
3876 | * commit message is already correct, no need to commit | |
3877 | * it again. | |
3878 | * | |
3879 | * Only if it is the final command in the fixup/squash | |
3880 | * chain, and only if the chain is longer than a single | |
3881 | * fixup/squash command (which was just skipped), do we | |
3882 | * actually need to re-commit with a cleaned up commit | |
3883 | * message. | |
3884 | */ | |
3885 | if (opts->current_fixup_count > 0 && | |
3886 | !is_fixup(peek_command(todo_list, 0))) { | |
3887 | final_fixup = 1; | |
3888 | /* | |
3889 | * If there was not a single "squash" in the | |
3890 | * chain, we only need to clean up the commit | |
3891 | * message, no need to bother the user with | |
3892 | * opening the commit message in the editor. | |
3893 | */ | |
3894 | if (!starts_with(p, "squash ") && | |
3895 | !strstr(p, "\nsquash ")) | |
3896 | flags = (flags & ~EDIT_MSG) | CLEANUP_MSG; | |
3897 | } else if (is_fixup(peek_command(todo_list, 0))) { | |
3898 | /* | |
3899 | * We need to update the squash message to skip | |
3900 | * the latest commit message. | |
3901 | */ | |
3902 | struct commit *commit; | |
3903 | const char *path = rebase_path_squash_msg(); | |
3904 | ||
3905 | if (parse_head(r, &commit) || | |
3906 | !(p = get_commit_buffer(commit, NULL)) || | |
3907 | write_message(p, strlen(p), path, 0)) { | |
3908 | unuse_commit_buffer(commit, p); | |
3909 | return error(_("could not write file: " | |
3910 | "'%s'"), path); | |
3911 | } | |
3912 | unuse_commit_buffer(commit, p); | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | strbuf_release(&rev); | |
3917 | flags |= AMEND_MSG; | |
3918 | } | |
3919 | ||
3920 | if (is_clean) { | |
3921 | const char *cherry_pick_head = git_path_cherry_pick_head(r); | |
3922 | ||
3923 | if (file_exists(cherry_pick_head) && unlink(cherry_pick_head)) | |
3924 | return error(_("could not remove CHERRY_PICK_HEAD")); | |
3925 | if (!final_fixup) | |
3926 | return 0; | |
3927 | } | |
3928 | ||
3929 | if (run_git_commit(r, final_fixup ? NULL : rebase_path_message(), | |
3930 | opts, flags)) | |
3931 | return error(_("could not commit staged changes.")); | |
3932 | unlink(rebase_path_amend()); | |
3933 | unlink(git_path_merge_head(the_repository)); | |
3934 | if (final_fixup) { | |
3935 | unlink(rebase_path_fixup_msg()); | |
3936 | unlink(rebase_path_squash_msg()); | |
3937 | } | |
3938 | if (opts->current_fixup_count > 0) { | |
3939 | /* | |
3940 | * Whether final fixup or not, we just cleaned up the commit | |
3941 | * message... | |
3942 | */ | |
3943 | unlink(rebase_path_current_fixups()); | |
3944 | strbuf_reset(&opts->current_fixups); | |
3945 | opts->current_fixup_count = 0; | |
3946 | } | |
3947 | return 0; | |
3948 | } | |
3949 | ||
3950 | int sequencer_continue(struct repository *r, struct replay_opts *opts) | |
3951 | { | |
3952 | struct todo_list todo_list = TODO_LIST_INIT; | |
3953 | int res; | |
3954 | ||
3955 | if (read_and_refresh_cache(r, opts)) | |
3956 | return -1; | |
3957 | ||
3958 | if (read_populate_opts(opts)) | |
3959 | return -1; | |
3960 | if (is_rebase_i(opts)) { | |
3961 | if ((res = read_populate_todo(r, &todo_list, opts))) | |
3962 | goto release_todo_list; | |
3963 | if (commit_staged_changes(r, opts, &todo_list)) | |
3964 | return -1; | |
3965 | } else if (!file_exists(get_todo_path(opts))) | |
3966 | return continue_single_pick(r); | |
3967 | else if ((res = read_populate_todo(r, &todo_list, opts))) | |
3968 | goto release_todo_list; | |
3969 | ||
3970 | if (!is_rebase_i(opts)) { | |
3971 | /* Verify that the conflict has been resolved */ | |
3972 | if (file_exists(git_path_cherry_pick_head(r)) || | |
3973 | file_exists(git_path_revert_head(r))) { | |
3974 | res = continue_single_pick(r); | |
3975 | if (res) | |
3976 | goto release_todo_list; | |
3977 | } | |
3978 | if (index_differs_from(r, "HEAD", NULL, 0)) { | |
3979 | res = error_dirty_index(r->index, opts); | |
3980 | goto release_todo_list; | |
3981 | } | |
3982 | todo_list.current++; | |
3983 | } else if (file_exists(rebase_path_stopped_sha())) { | |
3984 | struct strbuf buf = STRBUF_INIT; | |
3985 | struct object_id oid; | |
3986 | ||
3987 | if (read_oneliner(&buf, rebase_path_stopped_sha(), 1) && | |
3988 | !get_oid_committish(buf.buf, &oid)) | |
3989 | record_in_rewritten(&oid, peek_command(&todo_list, 0)); | |
3990 | strbuf_release(&buf); | |
3991 | } | |
3992 | ||
3993 | res = pick_commits(r, &todo_list, opts); | |
3994 | release_todo_list: | |
3995 | todo_list_release(&todo_list); | |
3996 | return res; | |
3997 | } | |
3998 | ||
3999 | static int single_pick(struct repository *r, | |
4000 | struct commit *cmit, | |
4001 | struct replay_opts *opts) | |
4002 | { | |
4003 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
4004 | return do_pick_commit(r, opts->action == REPLAY_PICK ? | |
4005 | TODO_PICK : TODO_REVERT, cmit, opts, 0); | |
4006 | } | |
4007 | ||
4008 | int sequencer_pick_revisions(struct repository *r, | |
4009 | struct replay_opts *opts) | |
4010 | { | |
4011 | struct todo_list todo_list = TODO_LIST_INIT; | |
4012 | struct object_id oid; | |
4013 | int i, res; | |
4014 | ||
4015 | assert(opts->revs); | |
4016 | if (read_and_refresh_cache(r, opts)) | |
4017 | return -1; | |
4018 | ||
4019 | for (i = 0; i < opts->revs->pending.nr; i++) { | |
4020 | struct object_id oid; | |
4021 | const char *name = opts->revs->pending.objects[i].name; | |
4022 | ||
4023 | /* This happens when using --stdin. */ | |
4024 | if (!strlen(name)) | |
4025 | continue; | |
4026 | ||
4027 | if (!get_oid(name, &oid)) { | |
4028 | if (!lookup_commit_reference_gently(r, &oid, 1)) { | |
4029 | enum object_type type = oid_object_info(r, | |
4030 | &oid, | |
4031 | NULL); | |
4032 | return error(_("%s: can't cherry-pick a %s"), | |
4033 | name, type_name(type)); | |
4034 | } | |
4035 | } else | |
4036 | return error(_("%s: bad revision"), name); | |
4037 | } | |
4038 | ||
4039 | /* | |
4040 | * If we were called as "git cherry-pick <commit>", just | |
4041 | * cherry-pick/revert it, set CHERRY_PICK_HEAD / | |
4042 | * REVERT_HEAD, and don't touch the sequencer state. | |
4043 | * This means it is possible to cherry-pick in the middle | |
4044 | * of a cherry-pick sequence. | |
4045 | */ | |
4046 | if (opts->revs->cmdline.nr == 1 && | |
4047 | opts->revs->cmdline.rev->whence == REV_CMD_REV && | |
4048 | opts->revs->no_walk && | |
4049 | !opts->revs->cmdline.rev->flags) { | |
4050 | struct commit *cmit; | |
4051 | if (prepare_revision_walk(opts->revs)) | |
4052 | return error(_("revision walk setup failed")); | |
4053 | cmit = get_revision(opts->revs); | |
4054 | if (!cmit) | |
4055 | return error(_("empty commit set passed")); | |
4056 | if (get_revision(opts->revs)) | |
4057 | BUG("unexpected extra commit from walk"); | |
4058 | return single_pick(r, cmit, opts); | |
4059 | } | |
4060 | ||
4061 | /* | |
4062 | * Start a new cherry-pick/ revert sequence; but | |
4063 | * first, make sure that an existing one isn't in | |
4064 | * progress | |
4065 | */ | |
4066 | ||
4067 | if (walk_revs_populate_todo(&todo_list, opts) || | |
4068 | create_seq_dir() < 0) | |
4069 | return -1; | |
4070 | if (get_oid("HEAD", &oid) && (opts->action == REPLAY_REVERT)) | |
4071 | return error(_("can't revert as initial commit")); | |
4072 | if (save_head(oid_to_hex(&oid))) | |
4073 | return -1; | |
4074 | if (save_opts(opts)) | |
4075 | return -1; | |
4076 | update_abort_safety_file(); | |
4077 | res = pick_commits(r, &todo_list, opts); | |
4078 | todo_list_release(&todo_list); | |
4079 | return res; | |
4080 | } | |
4081 | ||
4082 | void append_signoff(struct strbuf *msgbuf, size_t ignore_footer, unsigned flag) | |
4083 | { | |
4084 | unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP; | |
4085 | struct strbuf sob = STRBUF_INIT; | |
4086 | int has_footer; | |
4087 | ||
4088 | strbuf_addstr(&sob, sign_off_header); | |
4089 | strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"), | |
4090 | getenv("GIT_COMMITTER_EMAIL"))); | |
4091 | strbuf_addch(&sob, '\n'); | |
4092 | ||
4093 | if (!ignore_footer) | |
4094 | strbuf_complete_line(msgbuf); | |
4095 | ||
4096 | /* | |
4097 | * If the whole message buffer is equal to the sob, pretend that we | |
4098 | * found a conforming footer with a matching sob | |
4099 | */ | |
4100 | if (msgbuf->len - ignore_footer == sob.len && | |
4101 | !strncmp(msgbuf->buf, sob.buf, sob.len)) | |
4102 | has_footer = 3; | |
4103 | else | |
4104 | has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer); | |
4105 | ||
4106 | if (!has_footer) { | |
4107 | const char *append_newlines = NULL; | |
4108 | size_t len = msgbuf->len - ignore_footer; | |
4109 | ||
4110 | if (!len) { | |
4111 | /* | |
4112 | * The buffer is completely empty. Leave foom for | |
4113 | * the title and body to be filled in by the user. | |
4114 | */ | |
4115 | append_newlines = "\n\n"; | |
4116 | } else if (len == 1) { | |
4117 | /* | |
4118 | * Buffer contains a single newline. Add another | |
4119 | * so that we leave room for the title and body. | |
4120 | */ | |
4121 | append_newlines = "\n"; | |
4122 | } else if (msgbuf->buf[len - 2] != '\n') { | |
4123 | /* | |
4124 | * Buffer ends with a single newline. Add another | |
4125 | * so that there is an empty line between the message | |
4126 | * body and the sob. | |
4127 | */ | |
4128 | append_newlines = "\n"; | |
4129 | } /* else, the buffer already ends with two newlines. */ | |
4130 | ||
4131 | if (append_newlines) | |
4132 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
4133 | append_newlines, strlen(append_newlines)); | |
4134 | } | |
4135 | ||
4136 | if (has_footer != 3 && (!no_dup_sob || has_footer != 2)) | |
4137 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
4138 | sob.buf, sob.len); | |
4139 | ||
4140 | strbuf_release(&sob); | |
4141 | } | |
4142 | ||
4143 | struct labels_entry { | |
4144 | struct hashmap_entry entry; | |
4145 | char label[FLEX_ARRAY]; | |
4146 | }; | |
4147 | ||
4148 | static int labels_cmp(const void *fndata, const struct labels_entry *a, | |
4149 | const struct labels_entry *b, const void *key) | |
4150 | { | |
4151 | return key ? strcmp(a->label, key) : strcmp(a->label, b->label); | |
4152 | } | |
4153 | ||
4154 | struct string_entry { | |
4155 | struct oidmap_entry entry; | |
4156 | char string[FLEX_ARRAY]; | |
4157 | }; | |
4158 | ||
4159 | struct label_state { | |
4160 | struct oidmap commit2label; | |
4161 | struct hashmap labels; | |
4162 | struct strbuf buf; | |
4163 | }; | |
4164 | ||
4165 | static const char *label_oid(struct object_id *oid, const char *label, | |
4166 | struct label_state *state) | |
4167 | { | |
4168 | struct labels_entry *labels_entry; | |
4169 | struct string_entry *string_entry; | |
4170 | struct object_id dummy; | |
4171 | size_t len; | |
4172 | int i; | |
4173 | ||
4174 | string_entry = oidmap_get(&state->commit2label, oid); | |
4175 | if (string_entry) | |
4176 | return string_entry->string; | |
4177 | ||
4178 | /* | |
4179 | * For "uninteresting" commits, i.e. commits that are not to be | |
4180 | * rebased, and which can therefore not be labeled, we use a unique | |
4181 | * abbreviation of the commit name. This is slightly more complicated | |
4182 | * than calling find_unique_abbrev() because we also need to make | |
4183 | * sure that the abbreviation does not conflict with any other | |
4184 | * label. | |
4185 | * | |
4186 | * We disallow "interesting" commits to be labeled by a string that | |
4187 | * is a valid full-length hash, to ensure that we always can find an | |
4188 | * abbreviation for any uninteresting commit's names that does not | |
4189 | * clash with any other label. | |
4190 | */ | |
4191 | if (!label) { | |
4192 | char *p; | |
4193 | ||
4194 | strbuf_reset(&state->buf); | |
4195 | strbuf_grow(&state->buf, GIT_SHA1_HEXSZ); | |
4196 | label = p = state->buf.buf; | |
4197 | ||
4198 | find_unique_abbrev_r(p, oid, default_abbrev); | |
4199 | ||
4200 | /* | |
4201 | * We may need to extend the abbreviated hash so that there is | |
4202 | * no conflicting label. | |
4203 | */ | |
4204 | if (hashmap_get_from_hash(&state->labels, strihash(p), p)) { | |
4205 | size_t i = strlen(p) + 1; | |
4206 | ||
4207 | oid_to_hex_r(p, oid); | |
4208 | for (; i < GIT_SHA1_HEXSZ; i++) { | |
4209 | char save = p[i]; | |
4210 | p[i] = '\0'; | |
4211 | if (!hashmap_get_from_hash(&state->labels, | |
4212 | strihash(p), p)) | |
4213 | break; | |
4214 | p[i] = save; | |
4215 | } | |
4216 | } | |
4217 | } else if (((len = strlen(label)) == the_hash_algo->hexsz && | |
4218 | !get_oid_hex(label, &dummy)) || | |
4219 | (len == 1 && *label == '#') || | |
4220 | hashmap_get_from_hash(&state->labels, | |
4221 | strihash(label), label)) { | |
4222 | /* | |
4223 | * If the label already exists, or if the label is a valid full | |
4224 | * OID, or the label is a '#' (which we use as a separator | |
4225 | * between merge heads and oneline), we append a dash and a | |
4226 | * number to make it unique. | |
4227 | */ | |
4228 | struct strbuf *buf = &state->buf; | |
4229 | ||
4230 | strbuf_reset(buf); | |
4231 | strbuf_add(buf, label, len); | |
4232 | ||
4233 | for (i = 2; ; i++) { | |
4234 | strbuf_setlen(buf, len); | |
4235 | strbuf_addf(buf, "-%d", i); | |
4236 | if (!hashmap_get_from_hash(&state->labels, | |
4237 | strihash(buf->buf), | |
4238 | buf->buf)) | |
4239 | break; | |
4240 | } | |
4241 | ||
4242 | label = buf->buf; | |
4243 | } | |
4244 | ||
4245 | FLEX_ALLOC_STR(labels_entry, label, label); | |
4246 | hashmap_entry_init(labels_entry, strihash(label)); | |
4247 | hashmap_add(&state->labels, labels_entry); | |
4248 | ||
4249 | FLEX_ALLOC_STR(string_entry, string, label); | |
4250 | oidcpy(&string_entry->entry.oid, oid); | |
4251 | oidmap_put(&state->commit2label, string_entry); | |
4252 | ||
4253 | return string_entry->string; | |
4254 | } | |
4255 | ||
4256 | static int make_script_with_merges(struct pretty_print_context *pp, | |
4257 | struct rev_info *revs, FILE *out, | |
4258 | unsigned flags) | |
4259 | { | |
4260 | int keep_empty = flags & TODO_LIST_KEEP_EMPTY; | |
4261 | int rebase_cousins = flags & TODO_LIST_REBASE_COUSINS; | |
4262 | struct strbuf buf = STRBUF_INIT, oneline = STRBUF_INIT; | |
4263 | struct strbuf label = STRBUF_INIT; | |
4264 | struct commit_list *commits = NULL, **tail = &commits, *iter; | |
4265 | struct commit_list *tips = NULL, **tips_tail = &tips; | |
4266 | struct commit *commit; | |
4267 | struct oidmap commit2todo = OIDMAP_INIT; | |
4268 | struct string_entry *entry; | |
4269 | struct oidset interesting = OIDSET_INIT, child_seen = OIDSET_INIT, | |
4270 | shown = OIDSET_INIT; | |
4271 | struct label_state state = { OIDMAP_INIT, { NULL }, STRBUF_INIT }; | |
4272 | ||
4273 | int abbr = flags & TODO_LIST_ABBREVIATE_CMDS; | |
4274 | const char *cmd_pick = abbr ? "p" : "pick", | |
4275 | *cmd_label = abbr ? "l" : "label", | |
4276 | *cmd_reset = abbr ? "t" : "reset", | |
4277 | *cmd_merge = abbr ? "m" : "merge"; | |
4278 | ||
4279 | oidmap_init(&commit2todo, 0); | |
4280 | oidmap_init(&state.commit2label, 0); | |
4281 | hashmap_init(&state.labels, (hashmap_cmp_fn) labels_cmp, NULL, 0); | |
4282 | strbuf_init(&state.buf, 32); | |
4283 | ||
4284 | if (revs->cmdline.nr && (revs->cmdline.rev[0].flags & BOTTOM)) { | |
4285 | struct object_id *oid = &revs->cmdline.rev[0].item->oid; | |
4286 | FLEX_ALLOC_STR(entry, string, "onto"); | |
4287 | oidcpy(&entry->entry.oid, oid); | |
4288 | oidmap_put(&state.commit2label, entry); | |
4289 | } | |
4290 | ||
4291 | /* | |
4292 | * First phase: | |
4293 | * - get onelines for all commits | |
4294 | * - gather all branch tips (i.e. 2nd or later parents of merges) | |
4295 | * - label all branch tips | |
4296 | */ | |
4297 | while ((commit = get_revision(revs))) { | |
4298 | struct commit_list *to_merge; | |
4299 | const char *p1, *p2; | |
4300 | struct object_id *oid; | |
4301 | int is_empty; | |
4302 | ||
4303 | tail = &commit_list_insert(commit, tail)->next; | |
4304 | oidset_insert(&interesting, &commit->object.oid); | |
4305 | ||
4306 | is_empty = is_original_commit_empty(commit); | |
4307 | if (!is_empty && (commit->object.flags & PATCHSAME)) | |
4308 | continue; | |
4309 | ||
4310 | strbuf_reset(&oneline); | |
4311 | pretty_print_commit(pp, commit, &oneline); | |
4312 | ||
4313 | to_merge = commit->parents ? commit->parents->next : NULL; | |
4314 | if (!to_merge) { | |
4315 | /* non-merge commit: easy case */ | |
4316 | strbuf_reset(&buf); | |
4317 | if (!keep_empty && is_empty) | |
4318 | strbuf_addf(&buf, "%c ", comment_line_char); | |
4319 | strbuf_addf(&buf, "%s %s %s", cmd_pick, | |
4320 | oid_to_hex(&commit->object.oid), | |
4321 | oneline.buf); | |
4322 | ||
4323 | FLEX_ALLOC_STR(entry, string, buf.buf); | |
4324 | oidcpy(&entry->entry.oid, &commit->object.oid); | |
4325 | oidmap_put(&commit2todo, entry); | |
4326 | ||
4327 | continue; | |
4328 | } | |
4329 | ||
4330 | /* Create a label */ | |
4331 | strbuf_reset(&label); | |
4332 | if (skip_prefix(oneline.buf, "Merge ", &p1) && | |
4333 | (p1 = strchr(p1, '\'')) && | |
4334 | (p2 = strchr(++p1, '\''))) | |
4335 | strbuf_add(&label, p1, p2 - p1); | |
4336 | else if (skip_prefix(oneline.buf, "Merge pull request ", | |
4337 | &p1) && | |
4338 | (p1 = strstr(p1, " from "))) | |
4339 | strbuf_addstr(&label, p1 + strlen(" from ")); | |
4340 | else | |
4341 | strbuf_addbuf(&label, &oneline); | |
4342 | ||
4343 | for (p1 = label.buf; *p1; p1++) | |
4344 | if (isspace(*p1)) | |
4345 | *(char *)p1 = '-'; | |
4346 | ||
4347 | strbuf_reset(&buf); | |
4348 | strbuf_addf(&buf, "%s -C %s", | |
4349 | cmd_merge, oid_to_hex(&commit->object.oid)); | |
4350 | ||
4351 | /* label the tips of merged branches */ | |
4352 | for (; to_merge; to_merge = to_merge->next) { | |
4353 | oid = &to_merge->item->object.oid; | |
4354 | strbuf_addch(&buf, ' '); | |
4355 | ||
4356 | if (!oidset_contains(&interesting, oid)) { | |
4357 | strbuf_addstr(&buf, label_oid(oid, NULL, | |
4358 | &state)); | |
4359 | continue; | |
4360 | } | |
4361 | ||
4362 | tips_tail = &commit_list_insert(to_merge->item, | |
4363 | tips_tail)->next; | |
4364 | ||
4365 | strbuf_addstr(&buf, label_oid(oid, label.buf, &state)); | |
4366 | } | |
4367 | strbuf_addf(&buf, " # %s", oneline.buf); | |
4368 | ||
4369 | FLEX_ALLOC_STR(entry, string, buf.buf); | |
4370 | oidcpy(&entry->entry.oid, &commit->object.oid); | |
4371 | oidmap_put(&commit2todo, entry); | |
4372 | } | |
4373 | ||
4374 | /* | |
4375 | * Second phase: | |
4376 | * - label branch points | |
4377 | * - add HEAD to the branch tips | |
4378 | */ | |
4379 | for (iter = commits; iter; iter = iter->next) { | |
4380 | struct commit_list *parent = iter->item->parents; | |
4381 | for (; parent; parent = parent->next) { | |
4382 | struct object_id *oid = &parent->item->object.oid; | |
4383 | if (!oidset_contains(&interesting, oid)) | |
4384 | continue; | |
4385 | if (oidset_insert(&child_seen, oid)) | |
4386 | label_oid(oid, "branch-point", &state); | |
4387 | } | |
4388 | ||
4389 | /* Add HEAD as implict "tip of branch" */ | |
4390 | if (!iter->next) | |
4391 | tips_tail = &commit_list_insert(iter->item, | |
4392 | tips_tail)->next; | |
4393 | } | |
4394 | ||
4395 | /* | |
4396 | * Third phase: output the todo list. This is a bit tricky, as we | |
4397 | * want to avoid jumping back and forth between revisions. To | |
4398 | * accomplish that goal, we walk backwards from the branch tips, | |
4399 | * gathering commits not yet shown, reversing the list on the fly, | |
4400 | * then outputting that list (labeling revisions as needed). | |
4401 | */ | |
4402 | fprintf(out, "%s onto\n", cmd_label); | |
4403 | for (iter = tips; iter; iter = iter->next) { | |
4404 | struct commit_list *list = NULL, *iter2; | |
4405 | ||
4406 | commit = iter->item; | |
4407 | if (oidset_contains(&shown, &commit->object.oid)) | |
4408 | continue; | |
4409 | entry = oidmap_get(&state.commit2label, &commit->object.oid); | |
4410 | ||
4411 | if (entry) | |
4412 | fprintf(out, "\n%c Branch %s\n", comment_line_char, entry->string); | |
4413 | else | |
4414 | fprintf(out, "\n"); | |
4415 | ||
4416 | while (oidset_contains(&interesting, &commit->object.oid) && | |
4417 | !oidset_contains(&shown, &commit->object.oid)) { | |
4418 | commit_list_insert(commit, &list); | |
4419 | if (!commit->parents) { | |
4420 | commit = NULL; | |
4421 | break; | |
4422 | } | |
4423 | commit = commit->parents->item; | |
4424 | } | |
4425 | ||
4426 | if (!commit) | |
4427 | fprintf(out, "%s %s\n", cmd_reset, | |
4428 | rebase_cousins ? "onto" : "[new root]"); | |
4429 | else { | |
4430 | const char *to = NULL; | |
4431 | ||
4432 | entry = oidmap_get(&state.commit2label, | |
4433 | &commit->object.oid); | |
4434 | if (entry) | |
4435 | to = entry->string; | |
4436 | else if (!rebase_cousins) | |
4437 | to = label_oid(&commit->object.oid, NULL, | |
4438 | &state); | |
4439 | ||
4440 | if (!to || !strcmp(to, "onto")) | |
4441 | fprintf(out, "%s onto\n", cmd_reset); | |
4442 | else { | |
4443 | strbuf_reset(&oneline); | |
4444 | pretty_print_commit(pp, commit, &oneline); | |
4445 | fprintf(out, "%s %s # %s\n", | |
4446 | cmd_reset, to, oneline.buf); | |
4447 | } | |
4448 | } | |
4449 | ||
4450 | for (iter2 = list; iter2; iter2 = iter2->next) { | |
4451 | struct object_id *oid = &iter2->item->object.oid; | |
4452 | entry = oidmap_get(&commit2todo, oid); | |
4453 | /* only show if not already upstream */ | |
4454 | if (entry) | |
4455 | fprintf(out, "%s\n", entry->string); | |
4456 | entry = oidmap_get(&state.commit2label, oid); | |
4457 | if (entry) | |
4458 | fprintf(out, "%s %s\n", | |
4459 | cmd_label, entry->string); | |
4460 | oidset_insert(&shown, oid); | |
4461 | } | |
4462 | ||
4463 | free_commit_list(list); | |
4464 | } | |
4465 | ||
4466 | free_commit_list(commits); | |
4467 | free_commit_list(tips); | |
4468 | ||
4469 | strbuf_release(&label); | |
4470 | strbuf_release(&oneline); | |
4471 | strbuf_release(&buf); | |
4472 | ||
4473 | oidmap_free(&commit2todo, 1); | |
4474 | oidmap_free(&state.commit2label, 1); | |
4475 | hashmap_free(&state.labels, 1); | |
4476 | strbuf_release(&state.buf); | |
4477 | ||
4478 | return 0; | |
4479 | } | |
4480 | ||
4481 | int sequencer_make_script(struct repository *r, FILE *out, | |
4482 | int argc, const char **argv, | |
4483 | unsigned flags) | |
4484 | { | |
4485 | char *format = NULL; | |
4486 | struct pretty_print_context pp = {0}; | |
4487 | struct strbuf buf = STRBUF_INIT; | |
4488 | struct rev_info revs; | |
4489 | struct commit *commit; | |
4490 | int keep_empty = flags & TODO_LIST_KEEP_EMPTY; | |
4491 | const char *insn = flags & TODO_LIST_ABBREVIATE_CMDS ? "p" : "pick"; | |
4492 | int rebase_merges = flags & TODO_LIST_REBASE_MERGES; | |
4493 | ||
4494 | repo_init_revisions(r, &revs, NULL); | |
4495 | revs.verbose_header = 1; | |
4496 | if (!rebase_merges) | |
4497 | revs.max_parents = 1; | |
4498 | revs.cherry_mark = 1; | |
4499 | revs.limited = 1; | |
4500 | revs.reverse = 1; | |
4501 | revs.right_only = 1; | |
4502 | revs.sort_order = REV_SORT_IN_GRAPH_ORDER; | |
4503 | revs.topo_order = 1; | |
4504 | ||
4505 | revs.pretty_given = 1; | |
4506 | git_config_get_string("rebase.instructionFormat", &format); | |
4507 | if (!format || !*format) { | |
4508 | free(format); | |
4509 | format = xstrdup("%s"); | |
4510 | } | |
4511 | get_commit_format(format, &revs); | |
4512 | free(format); | |
4513 | pp.fmt = revs.commit_format; | |
4514 | pp.output_encoding = get_log_output_encoding(); | |
4515 | ||
4516 | if (setup_revisions(argc, argv, &revs, NULL) > 1) | |
4517 | return error(_("make_script: unhandled options")); | |
4518 | ||
4519 | if (prepare_revision_walk(&revs) < 0) | |
4520 | return error(_("make_script: error preparing revisions")); | |
4521 | ||
4522 | if (rebase_merges) | |
4523 | return make_script_with_merges(&pp, &revs, out, flags); | |
4524 | ||
4525 | while ((commit = get_revision(&revs))) { | |
4526 | int is_empty = is_original_commit_empty(commit); | |
4527 | ||
4528 | if (!is_empty && (commit->object.flags & PATCHSAME)) | |
4529 | continue; | |
4530 | strbuf_reset(&buf); | |
4531 | if (!keep_empty && is_empty) | |
4532 | strbuf_addf(&buf, "%c ", comment_line_char); | |
4533 | strbuf_addf(&buf, "%s %s ", insn, | |
4534 | oid_to_hex(&commit->object.oid)); | |
4535 | pretty_print_commit(&pp, commit, &buf); | |
4536 | strbuf_addch(&buf, '\n'); | |
4537 | fputs(buf.buf, out); | |
4538 | } | |
4539 | strbuf_release(&buf); | |
4540 | return 0; | |
4541 | } | |
4542 | ||
4543 | /* | |
4544 | * Add commands after pick and (series of) squash/fixup commands | |
4545 | * in the todo list. | |
4546 | */ | |
4547 | int sequencer_add_exec_commands(struct repository *r, | |
4548 | const char *commands) | |
4549 | { | |
4550 | const char *todo_file = rebase_path_todo(); | |
4551 | struct todo_list todo_list = TODO_LIST_INIT; | |
4552 | struct strbuf *buf = &todo_list.buf; | |
4553 | size_t offset = 0, commands_len = strlen(commands); | |
4554 | int i, insert; | |
4555 | ||
4556 | if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) | |
4557 | return error(_("could not read '%s'."), todo_file); | |
4558 | ||
4559 | if (parse_insn_buffer(r, todo_list.buf.buf, &todo_list)) { | |
4560 | todo_list_release(&todo_list); | |
4561 | return error(_("unusable todo list: '%s'"), todo_file); | |
4562 | } | |
4563 | ||
4564 | /* | |
4565 | * Insert <commands> after every pick. Here, fixup/squash chains | |
4566 | * are considered part of the pick, so we insert the commands *after* | |
4567 | * those chains if there are any. | |
4568 | */ | |
4569 | insert = -1; | |
4570 | for (i = 0; i < todo_list.nr; i++) { | |
4571 | enum todo_command command = todo_list.items[i].command; | |
4572 | ||
4573 | if (insert >= 0) { | |
4574 | /* skip fixup/squash chains */ | |
4575 | if (command == TODO_COMMENT) | |
4576 | continue; | |
4577 | else if (is_fixup(command)) { | |
4578 | insert = i + 1; | |
4579 | continue; | |
4580 | } | |
4581 | strbuf_insert(buf, | |
4582 | todo_list.items[insert].offset_in_buf + | |
4583 | offset, commands, commands_len); | |
4584 | offset += commands_len; | |
4585 | insert = -1; | |
4586 | } | |
4587 | ||
4588 | if (command == TODO_PICK || command == TODO_MERGE) | |
4589 | insert = i + 1; | |
4590 | } | |
4591 | ||
4592 | /* insert or append final <commands> */ | |
4593 | if (insert >= 0 && insert < todo_list.nr) | |
4594 | strbuf_insert(buf, todo_list.items[insert].offset_in_buf + | |
4595 | offset, commands, commands_len); | |
4596 | else if (insert >= 0 || !offset) | |
4597 | strbuf_add(buf, commands, commands_len); | |
4598 | ||
4599 | i = write_message(buf->buf, buf->len, todo_file, 0); | |
4600 | todo_list_release(&todo_list); | |
4601 | return i; | |
4602 | } | |
4603 | ||
4604 | int transform_todos(struct repository *r, unsigned flags) | |
4605 | { | |
4606 | const char *todo_file = rebase_path_todo(); | |
4607 | struct todo_list todo_list = TODO_LIST_INIT; | |
4608 | struct strbuf buf = STRBUF_INIT; | |
4609 | struct todo_item *item; | |
4610 | int i; | |
4611 | ||
4612 | if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) | |
4613 | return error(_("could not read '%s'."), todo_file); | |
4614 | ||
4615 | if (parse_insn_buffer(r, todo_list.buf.buf, &todo_list)) { | |
4616 | todo_list_release(&todo_list); | |
4617 | return error(_("unusable todo list: '%s'"), todo_file); | |
4618 | } | |
4619 | ||
4620 | for (item = todo_list.items, i = 0; i < todo_list.nr; i++, item++) { | |
4621 | /* if the item is not a command write it and continue */ | |
4622 | if (item->command >= TODO_COMMENT) { | |
4623 | strbuf_addf(&buf, "%.*s\n", item->arg_len, item->arg); | |
4624 | continue; | |
4625 | } | |
4626 | ||
4627 | /* add command to the buffer */ | |
4628 | if (flags & TODO_LIST_ABBREVIATE_CMDS) | |
4629 | strbuf_addch(&buf, command_to_char(item->command)); | |
4630 | else | |
4631 | strbuf_addstr(&buf, command_to_string(item->command)); | |
4632 | ||
4633 | /* add commit id */ | |
4634 | if (item->commit) { | |
4635 | const char *oid = flags & TODO_LIST_SHORTEN_IDS ? | |
4636 | short_commit_name(item->commit) : | |
4637 | oid_to_hex(&item->commit->object.oid); | |
4638 | ||
4639 | if (item->command == TODO_MERGE) { | |
4640 | if (item->flags & TODO_EDIT_MERGE_MSG) | |
4641 | strbuf_addstr(&buf, " -c"); | |
4642 | else | |
4643 | strbuf_addstr(&buf, " -C"); | |
4644 | } | |
4645 | ||
4646 | strbuf_addf(&buf, " %s", oid); | |
4647 | } | |
4648 | ||
4649 | /* add all the rest */ | |
4650 | if (!item->arg_len) | |
4651 | strbuf_addch(&buf, '\n'); | |
4652 | else | |
4653 | strbuf_addf(&buf, " %.*s\n", item->arg_len, item->arg); | |
4654 | } | |
4655 | ||
4656 | i = write_message(buf.buf, buf.len, todo_file, 0); | |
4657 | todo_list_release(&todo_list); | |
4658 | return i; | |
4659 | } | |
4660 | ||
4661 | enum missing_commit_check_level get_missing_commit_check_level(void) | |
4662 | { | |
4663 | const char *value; | |
4664 | ||
4665 | if (git_config_get_value("rebase.missingcommitscheck", &value) || | |
4666 | !strcasecmp("ignore", value)) | |
4667 | return MISSING_COMMIT_CHECK_IGNORE; | |
4668 | if (!strcasecmp("warn", value)) | |
4669 | return MISSING_COMMIT_CHECK_WARN; | |
4670 | if (!strcasecmp("error", value)) | |
4671 | return MISSING_COMMIT_CHECK_ERROR; | |
4672 | warning(_("unrecognized setting %s for option " | |
4673 | "rebase.missingCommitsCheck. Ignoring."), value); | |
4674 | return MISSING_COMMIT_CHECK_IGNORE; | |
4675 | } | |
4676 | ||
4677 | define_commit_slab(commit_seen, unsigned char); | |
4678 | /* | |
4679 | * Check if the user dropped some commits by mistake | |
4680 | * Behaviour determined by rebase.missingCommitsCheck. | |
4681 | * Check if there is an unrecognized command or a | |
4682 | * bad SHA-1 in a command. | |
4683 | */ | |
4684 | int check_todo_list(struct repository *r) | |
4685 | { | |
4686 | enum missing_commit_check_level check_level = get_missing_commit_check_level(); | |
4687 | struct strbuf todo_file = STRBUF_INIT; | |
4688 | struct todo_list todo_list = TODO_LIST_INIT; | |
4689 | struct strbuf missing = STRBUF_INIT; | |
4690 | int advise_to_edit_todo = 0, res = 0, i; | |
4691 | struct commit_seen commit_seen; | |
4692 | ||
4693 | init_commit_seen(&commit_seen); | |
4694 | ||
4695 | strbuf_addstr(&todo_file, rebase_path_todo()); | |
4696 | if (strbuf_read_file_or_whine(&todo_list.buf, todo_file.buf) < 0) { | |
4697 | res = -1; | |
4698 | goto leave_check; | |
4699 | } | |
4700 | advise_to_edit_todo = res = | |
4701 | parse_insn_buffer(r, todo_list.buf.buf, &todo_list); | |
4702 | ||
4703 | if (res || check_level == MISSING_COMMIT_CHECK_IGNORE) | |
4704 | goto leave_check; | |
4705 | ||
4706 | /* Mark the commits in git-rebase-todo as seen */ | |
4707 | for (i = 0; i < todo_list.nr; i++) { | |
4708 | struct commit *commit = todo_list.items[i].commit; | |
4709 | if (commit) | |
4710 | *commit_seen_at(&commit_seen, commit) = 1; | |
4711 | } | |
4712 | ||
4713 | todo_list_release(&todo_list); | |
4714 | strbuf_addstr(&todo_file, ".backup"); | |
4715 | if (strbuf_read_file_or_whine(&todo_list.buf, todo_file.buf) < 0) { | |
4716 | res = -1; | |
4717 | goto leave_check; | |
4718 | } | |
4719 | strbuf_release(&todo_file); | |
4720 | res = !!parse_insn_buffer(r, todo_list.buf.buf, &todo_list); | |
4721 | ||
4722 | /* Find commits in git-rebase-todo.backup yet unseen */ | |
4723 | for (i = todo_list.nr - 1; i >= 0; i--) { | |
4724 | struct todo_item *item = todo_list.items + i; | |
4725 | struct commit *commit = item->commit; | |
4726 | if (commit && !*commit_seen_at(&commit_seen, commit)) { | |
4727 | strbuf_addf(&missing, " - %s %.*s\n", | |
4728 | short_commit_name(commit), | |
4729 | item->arg_len, item->arg); | |
4730 | *commit_seen_at(&commit_seen, commit) = 1; | |
4731 | } | |
4732 | } | |
4733 | ||
4734 | /* Warn about missing commits */ | |
4735 | if (!missing.len) | |
4736 | goto leave_check; | |
4737 | ||
4738 | if (check_level == MISSING_COMMIT_CHECK_ERROR) | |
4739 | advise_to_edit_todo = res = 1; | |
4740 | ||
4741 | fprintf(stderr, | |
4742 | _("Warning: some commits may have been dropped accidentally.\n" | |
4743 | "Dropped commits (newer to older):\n")); | |
4744 | ||
4745 | /* Make the list user-friendly and display */ | |
4746 | fputs(missing.buf, stderr); | |
4747 | strbuf_release(&missing); | |
4748 | ||
4749 | fprintf(stderr, _("To avoid this message, use \"drop\" to " | |
4750 | "explicitly remove a commit.\n\n" | |
4751 | "Use 'git config rebase.missingCommitsCheck' to change " | |
4752 | "the level of warnings.\n" | |
4753 | "The possible behaviours are: ignore, warn, error.\n\n")); | |
4754 | ||
4755 | leave_check: | |
4756 | clear_commit_seen(&commit_seen); | |
4757 | strbuf_release(&todo_file); | |
4758 | todo_list_release(&todo_list); | |
4759 | ||
4760 | if (advise_to_edit_todo) | |
4761 | fprintf(stderr, | |
4762 | _("You can fix this with 'git rebase --edit-todo' " | |
4763 | "and then run 'git rebase --continue'.\n" | |
4764 | "Or you can abort the rebase with 'git rebase" | |
4765 | " --abort'.\n")); | |
4766 | ||
4767 | return res; | |
4768 | } | |
4769 | ||
4770 | static int rewrite_file(const char *path, const char *buf, size_t len) | |
4771 | { | |
4772 | int rc = 0; | |
4773 | int fd = open(path, O_WRONLY | O_TRUNC); | |
4774 | if (fd < 0) | |
4775 | return error_errno(_("could not open '%s' for writing"), path); | |
4776 | if (write_in_full(fd, buf, len) < 0) | |
4777 | rc = error_errno(_("could not write to '%s'"), path); | |
4778 | if (close(fd) && !rc) | |
4779 | rc = error_errno(_("could not close '%s'"), path); | |
4780 | return rc; | |
4781 | } | |
4782 | ||
4783 | /* skip picking commits whose parents are unchanged */ | |
4784 | static int skip_unnecessary_picks(struct repository *r, struct object_id *output_oid) | |
4785 | { | |
4786 | const char *todo_file = rebase_path_todo(); | |
4787 | struct strbuf buf = STRBUF_INIT; | |
4788 | struct todo_list todo_list = TODO_LIST_INIT; | |
4789 | struct object_id *parent_oid; | |
4790 | int fd, i; | |
4791 | ||
4792 | if (!read_oneliner(&buf, rebase_path_onto(), 0)) | |
4793 | return error(_("could not read 'onto'")); | |
4794 | if (get_oid(buf.buf, output_oid)) { | |
4795 | strbuf_release(&buf); | |
4796 | return error(_("need a HEAD to fixup")); | |
4797 | } | |
4798 | strbuf_release(&buf); | |
4799 | ||
4800 | if (strbuf_read_file_or_whine(&todo_list.buf, todo_file) < 0) | |
4801 | return -1; | |
4802 | if (parse_insn_buffer(r, todo_list.buf.buf, &todo_list) < 0) { | |
4803 | todo_list_release(&todo_list); | |
4804 | return -1; | |
4805 | } | |
4806 | ||
4807 | for (i = 0; i < todo_list.nr; i++) { | |
4808 | struct todo_item *item = todo_list.items + i; | |
4809 | ||
4810 | if (item->command >= TODO_NOOP) | |
4811 | continue; | |
4812 | if (item->command != TODO_PICK) | |
4813 | break; | |
4814 | if (parse_commit(item->commit)) { | |
4815 | todo_list_release(&todo_list); | |
4816 | return error(_("could not parse commit '%s'"), | |
4817 | oid_to_hex(&item->commit->object.oid)); | |
4818 | } | |
4819 | if (!item->commit->parents) | |
4820 | break; /* root commit */ | |
4821 | if (item->commit->parents->next) | |
4822 | break; /* merge commit */ | |
4823 | parent_oid = &item->commit->parents->item->object.oid; | |
4824 | if (!oideq(parent_oid, output_oid)) | |
4825 | break; | |
4826 | oidcpy(output_oid, &item->commit->object.oid); | |
4827 | } | |
4828 | if (i > 0) { | |
4829 | int offset = get_item_line_offset(&todo_list, i); | |
4830 | const char *done_path = rebase_path_done(); | |
4831 | ||
4832 | fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666); | |
4833 | if (fd < 0) { | |
4834 | error_errno(_("could not open '%s' for writing"), | |
4835 | done_path); | |
4836 | todo_list_release(&todo_list); | |
4837 | return -1; | |
4838 | } | |
4839 | if (write_in_full(fd, todo_list.buf.buf, offset) < 0) { | |
4840 | error_errno(_("could not write to '%s'"), done_path); | |
4841 | todo_list_release(&todo_list); | |
4842 | close(fd); | |
4843 | return -1; | |
4844 | } | |
4845 | close(fd); | |
4846 | ||
4847 | if (rewrite_file(rebase_path_todo(), todo_list.buf.buf + offset, | |
4848 | todo_list.buf.len - offset) < 0) { | |
4849 | todo_list_release(&todo_list); | |
4850 | return -1; | |
4851 | } | |
4852 | ||
4853 | todo_list.current = i; | |
4854 | if (is_fixup(peek_command(&todo_list, 0))) | |
4855 | record_in_rewritten(output_oid, peek_command(&todo_list, 0)); | |
4856 | } | |
4857 | ||
4858 | todo_list_release(&todo_list); | |
4859 | ||
4860 | return 0; | |
4861 | } | |
4862 | ||
4863 | int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags, | |
4864 | const char *shortrevisions, const char *onto_name, | |
4865 | const char *onto, const char *orig_head, const char *cmd, | |
4866 | unsigned autosquash) | |
4867 | { | |
4868 | const char *shortonto, *todo_file = rebase_path_todo(); | |
4869 | struct todo_list todo_list = TODO_LIST_INIT; | |
4870 | struct strbuf *buf = &(todo_list.buf); | |
4871 | struct object_id oid; | |
4872 | struct stat st; | |
4873 | ||
4874 | get_oid(onto, &oid); | |
4875 | shortonto = find_unique_abbrev(&oid, DEFAULT_ABBREV); | |
4876 | ||
4877 | if (!lstat(todo_file, &st) && st.st_size == 0 && | |
4878 | write_message("noop\n", 5, todo_file, 0)) | |
4879 | return -1; | |
4880 | ||
4881 | if (autosquash && rearrange_squash(r)) | |
4882 | return -1; | |
4883 | ||
4884 | if (cmd && *cmd) | |
4885 | sequencer_add_exec_commands(r, cmd); | |
4886 | ||
4887 | if (strbuf_read_file(buf, todo_file, 0) < 0) | |
4888 | return error_errno(_("could not read '%s'."), todo_file); | |
4889 | ||
4890 | if (parse_insn_buffer(r, buf->buf, &todo_list)) { | |
4891 | todo_list_release(&todo_list); | |
4892 | return error(_("unusable todo list: '%s'"), todo_file); | |
4893 | } | |
4894 | ||
4895 | if (count_commands(&todo_list) == 0) { | |
4896 | apply_autostash(opts); | |
4897 | sequencer_remove_state(opts); | |
4898 | todo_list_release(&todo_list); | |
4899 | ||
4900 | return error(_("nothing to do")); | |
4901 | } | |
4902 | ||
4903 | strbuf_addch(buf, '\n'); | |
4904 | strbuf_commented_addf(buf, Q_("Rebase %s onto %s (%d command)", | |
4905 | "Rebase %s onto %s (%d commands)", | |
4906 | count_commands(&todo_list)), | |
4907 | shortrevisions, shortonto, count_commands(&todo_list)); | |
4908 | append_todo_help(0, flags & TODO_LIST_KEEP_EMPTY, buf); | |
4909 | ||
4910 | if (write_message(buf->buf, buf->len, todo_file, 0)) { | |
4911 | todo_list_release(&todo_list); | |
4912 | return -1; | |
4913 | } | |
4914 | ||
4915 | if (copy_file(rebase_path_todo_backup(), todo_file, 0666)) | |
4916 | return error(_("could not copy '%s' to '%s'."), todo_file, | |
4917 | rebase_path_todo_backup()); | |
4918 | ||
4919 | if (transform_todos(r, flags | TODO_LIST_SHORTEN_IDS)) | |
4920 | return error(_("could not transform the todo list")); | |
4921 | ||
4922 | strbuf_reset(buf); | |
4923 | ||
4924 | if (launch_sequence_editor(todo_file, buf, NULL)) { | |
4925 | apply_autostash(opts); | |
4926 | sequencer_remove_state(opts); | |
4927 | todo_list_release(&todo_list); | |
4928 | ||
4929 | return -1; | |
4930 | } | |
4931 | ||
4932 | strbuf_stripspace(buf, 1); | |
4933 | if (buf->len == 0) { | |
4934 | apply_autostash(opts); | |
4935 | sequencer_remove_state(opts); | |
4936 | todo_list_release(&todo_list); | |
4937 | ||
4938 | return error(_("nothing to do")); | |
4939 | } | |
4940 | ||
4941 | todo_list_release(&todo_list); | |
4942 | ||
4943 | if (check_todo_list(r)) { | |
4944 | checkout_onto(opts, onto_name, onto, orig_head); | |
4945 | return -1; | |
4946 | } | |
4947 | ||
4948 | if (transform_todos(r, flags & ~(TODO_LIST_SHORTEN_IDS))) | |
4949 | return error(_("could not transform the todo list")); | |
4950 | ||
4951 | if (opts->allow_ff && skip_unnecessary_picks(r, &oid)) | |
4952 | return error(_("could not skip unnecessary pick commands")); | |
4953 | ||
4954 | if (checkout_onto(opts, onto_name, oid_to_hex(&oid), orig_head)) | |
4955 | return -1; | |
4956 | ||
4957 | if (require_clean_work_tree(r, "rebase", "", 1, 1)) | |
4958 | return -1; | |
4959 | ||
4960 | return sequencer_continue(r, opts); | |
4961 | } | |
4962 | ||
4963 | struct subject2item_entry { | |
4964 | struct hashmap_entry entry; | |
4965 | int i; | |
4966 | char subject[FLEX_ARRAY]; | |
4967 | }; | |
4968 | ||
4969 | static int subject2item_cmp(const void *fndata, | |
4970 | const struct subject2item_entry *a, | |
4971 | const struct subject2item_entry *b, const void *key) | |
4972 | { | |
4973 | return key ? strcmp(a->subject, key) : strcmp(a->subject, b->subject); | |
4974 | } | |
4975 | ||
4976 | define_commit_slab(commit_todo_item, struct todo_item *); | |
4977 | ||
4978 | /* | |
4979 | * Rearrange the todo list that has both "pick commit-id msg" and "pick | |
4980 | * commit-id fixup!/squash! msg" in it so that the latter is put immediately | |
4981 | * after the former, and change "pick" to "fixup"/"squash". | |
4982 | * | |
4983 | * Note that if the config has specified a custom instruction format, each log | |
4984 | * message will have to be retrieved from the commit (as the oneline in the | |
4985 | * script cannot be trusted) in order to normalize the autosquash arrangement. | |
4986 | */ | |
4987 | int rearrange_squash(struct repository *r) | |
4988 | { | |
4989 | const char *todo_file = rebase_path_todo(); | |
4990 | struct todo_list todo_list = TODO_LIST_INIT; | |
4991 | struct hashmap subject2item; | |
4992 | int res = 0, rearranged = 0, *next, *tail, i; | |
4993 | char **subjects; | |
4994 | struct commit_todo_item commit_todo; | |
4995 | ||
4996 | if (strbuf_read_file_or_whine(&todo_list.buf, todo_file) < 0) | |
4997 | return -1; | |
4998 | if (parse_insn_buffer(r, todo_list.buf.buf, &todo_list) < 0) { | |
4999 | todo_list_release(&todo_list); | |
5000 | return -1; | |
5001 | } | |
5002 | ||
5003 | init_commit_todo_item(&commit_todo); | |
5004 | /* | |
5005 | * The hashmap maps onelines to the respective todo list index. | |
5006 | * | |
5007 | * If any items need to be rearranged, the next[i] value will indicate | |
5008 | * which item was moved directly after the i'th. | |
5009 | * | |
5010 | * In that case, last[i] will indicate the index of the latest item to | |
5011 | * be moved to appear after the i'th. | |
5012 | */ | |
5013 | hashmap_init(&subject2item, (hashmap_cmp_fn) subject2item_cmp, | |
5014 | NULL, todo_list.nr); | |
5015 | ALLOC_ARRAY(next, todo_list.nr); | |
5016 | ALLOC_ARRAY(tail, todo_list.nr); | |
5017 | ALLOC_ARRAY(subjects, todo_list.nr); | |
5018 | for (i = 0; i < todo_list.nr; i++) { | |
5019 | struct strbuf buf = STRBUF_INIT; | |
5020 | struct todo_item *item = todo_list.items + i; | |
5021 | const char *commit_buffer, *subject, *p; | |
5022 | size_t subject_len; | |
5023 | int i2 = -1; | |
5024 | struct subject2item_entry *entry; | |
5025 | ||
5026 | next[i] = tail[i] = -1; | |
5027 | if (!item->commit || item->command == TODO_DROP) { | |
5028 | subjects[i] = NULL; | |
5029 | continue; | |
5030 | } | |
5031 | ||
5032 | if (is_fixup(item->command)) { | |
5033 | todo_list_release(&todo_list); | |
5034 | clear_commit_todo_item(&commit_todo); | |
5035 | return error(_("the script was already rearranged.")); | |
5036 | } | |
5037 | ||
5038 | *commit_todo_item_at(&commit_todo, item->commit) = item; | |
5039 | ||
5040 | parse_commit(item->commit); | |
5041 | commit_buffer = get_commit_buffer(item->commit, NULL); | |
5042 | find_commit_subject(commit_buffer, &subject); | |
5043 | format_subject(&buf, subject, " "); | |
5044 | subject = subjects[i] = strbuf_detach(&buf, &subject_len); | |
5045 | unuse_commit_buffer(item->commit, commit_buffer); | |
5046 | if ((skip_prefix(subject, "fixup! ", &p) || | |
5047 | skip_prefix(subject, "squash! ", &p))) { | |
5048 | struct commit *commit2; | |
5049 | ||
5050 | for (;;) { | |
5051 | while (isspace(*p)) | |
5052 | p++; | |
5053 | if (!skip_prefix(p, "fixup! ", &p) && | |
5054 | !skip_prefix(p, "squash! ", &p)) | |
5055 | break; | |
5056 | } | |
5057 | ||
5058 | if ((entry = hashmap_get_from_hash(&subject2item, | |
5059 | strhash(p), p))) | |
5060 | /* found by title */ | |
5061 | i2 = entry->i; | |
5062 | else if (!strchr(p, ' ') && | |
5063 | (commit2 = | |
5064 | lookup_commit_reference_by_name(p)) && | |
5065 | *commit_todo_item_at(&commit_todo, commit2)) | |
5066 | /* found by commit name */ | |
5067 | i2 = *commit_todo_item_at(&commit_todo, commit2) | |
5068 | - todo_list.items; | |
5069 | else { | |
5070 | /* copy can be a prefix of the commit subject */ | |
5071 | for (i2 = 0; i2 < i; i2++) | |
5072 | if (subjects[i2] && | |
5073 | starts_with(subjects[i2], p)) | |
5074 | break; | |
5075 | if (i2 == i) | |
5076 | i2 = -1; | |
5077 | } | |
5078 | } | |
5079 | if (i2 >= 0) { | |
5080 | rearranged = 1; | |
5081 | todo_list.items[i].command = | |
5082 | starts_with(subject, "fixup!") ? | |
5083 | TODO_FIXUP : TODO_SQUASH; | |
5084 | if (next[i2] < 0) | |
5085 | next[i2] = i; | |
5086 | else | |
5087 | next[tail[i2]] = i; | |
5088 | tail[i2] = i; | |
5089 | } else if (!hashmap_get_from_hash(&subject2item, | |
5090 | strhash(subject), subject)) { | |
5091 | FLEX_ALLOC_MEM(entry, subject, subject, subject_len); | |
5092 | entry->i = i; | |
5093 | hashmap_entry_init(entry, strhash(entry->subject)); | |
5094 | hashmap_put(&subject2item, entry); | |
5095 | } | |
5096 | } | |
5097 | ||
5098 | if (rearranged) { | |
5099 | struct strbuf buf = STRBUF_INIT; | |
5100 | ||
5101 | for (i = 0; i < todo_list.nr; i++) { | |
5102 | enum todo_command command = todo_list.items[i].command; | |
5103 | int cur = i; | |
5104 | ||
5105 | /* | |
5106 | * Initially, all commands are 'pick's. If it is a | |
5107 | * fixup or a squash now, we have rearranged it. | |
5108 | */ | |
5109 | if (is_fixup(command)) | |
5110 | continue; | |
5111 | ||
5112 | while (cur >= 0) { | |
5113 | const char *bol = | |
5114 | get_item_line(&todo_list, cur); | |
5115 | const char *eol = | |
5116 | get_item_line(&todo_list, cur + 1); | |
5117 | ||
5118 | /* replace 'pick', by 'fixup' or 'squash' */ | |
5119 | command = todo_list.items[cur].command; | |
5120 | if (is_fixup(command)) { | |
5121 | strbuf_addstr(&buf, | |
5122 | todo_command_info[command].str); | |
5123 | bol += strcspn(bol, " \t"); | |
5124 | } | |
5125 | ||
5126 | strbuf_add(&buf, bol, eol - bol); | |
5127 | ||
5128 | cur = next[cur]; | |
5129 | } | |
5130 | } | |
5131 | ||
5132 | res = rewrite_file(todo_file, buf.buf, buf.len); | |
5133 | strbuf_release(&buf); | |
5134 | } | |
5135 | ||
5136 | free(next); | |
5137 | free(tail); | |
5138 | for (i = 0; i < todo_list.nr; i++) | |
5139 | free(subjects[i]); | |
5140 | free(subjects); | |
5141 | hashmap_free(&subject2item, 1); | |
5142 | todo_list_release(&todo_list); | |
5143 | ||
5144 | clear_commit_todo_item(&commit_todo); | |
5145 | return res; | |
5146 | } |