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Commit | Line | Data |
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26ae337b | 1 | #include "cache.h" |
697cc8ef | 2 | #include "lockfile.h" |
26ae337b | 3 | #include "sequencer.h" |
26ae337b | 4 | #include "dir.h" |
043a4492 RR |
5 | #include "object.h" |
6 | #include "commit.h" | |
7 | #include "tag.h" | |
8 | #include "run-command.h" | |
9 | #include "exec_cmd.h" | |
10 | #include "utf8.h" | |
11 | #include "cache-tree.h" | |
12 | #include "diff.h" | |
13 | #include "revision.h" | |
14 | #include "rerere.h" | |
15 | #include "merge-recursive.h" | |
16 | #include "refs.h" | |
b27cfb0d | 17 | #include "argv-array.h" |
a1c75762 | 18 | #include "quote.h" |
967dfd4d | 19 | #include "trailer.h" |
56dc3ab0 | 20 | #include "log-tree.h" |
311af526 | 21 | #include "wt-status.h" |
043a4492 RR |
22 | |
23 | #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" | |
26ae337b | 24 | |
5ed75e2a | 25 | const char sign_off_header[] = "Signed-off-by: "; |
cd650a4e | 26 | static const char cherry_picked_prefix[] = "(cherry picked from commit "; |
5ed75e2a | 27 | |
8a2a0f53 JS |
28 | GIT_PATH_FUNC(git_path_seq_dir, "sequencer") |
29 | ||
30 | static GIT_PATH_FUNC(git_path_todo_file, "sequencer/todo") | |
31 | static GIT_PATH_FUNC(git_path_opts_file, "sequencer/opts") | |
32 | static GIT_PATH_FUNC(git_path_head_file, "sequencer/head") | |
1e41229d | 33 | static GIT_PATH_FUNC(git_path_abort_safety_file, "sequencer/abort-safety") |
f932729c | 34 | |
84583957 JS |
35 | static GIT_PATH_FUNC(rebase_path, "rebase-merge") |
36 | /* | |
37 | * The file containing rebase commands, comments, and empty lines. | |
38 | * This file is created by "git rebase -i" then edited by the user. As | |
39 | * the lines are processed, they are removed from the front of this | |
40 | * file and written to the tail of 'done'. | |
41 | */ | |
42 | static GIT_PATH_FUNC(rebase_path_todo, "rebase-merge/git-rebase-todo") | |
1df6df0c JS |
43 | /* |
44 | * The rebase command lines that have already been processed. A line | |
45 | * is moved here when it is first handled, before any associated user | |
46 | * actions. | |
47 | */ | |
48 | static GIT_PATH_FUNC(rebase_path_done, "rebase-merge/done") | |
ef80069a JS |
49 | /* |
50 | * The file to keep track of how many commands were already processed (e.g. | |
51 | * for the prompt). | |
52 | */ | |
53 | static GIT_PATH_FUNC(rebase_path_msgnum, "rebase-merge/msgnum"); | |
54 | /* | |
55 | * The file to keep track of how many commands are to be processed in total | |
56 | * (e.g. for the prompt). | |
57 | */ | |
58 | static GIT_PATH_FUNC(rebase_path_msgtotal, "rebase-merge/end"); | |
6e98de72 JS |
59 | /* |
60 | * The commit message that is planned to be used for any changes that | |
61 | * need to be committed following a user interaction. | |
62 | */ | |
63 | static GIT_PATH_FUNC(rebase_path_message, "rebase-merge/message") | |
64 | /* | |
65 | * The file into which is accumulated the suggested commit message for | |
66 | * squash/fixup commands. When the first of a series of squash/fixups | |
67 | * is seen, the file is created and the commit message from the | |
68 | * previous commit and from the first squash/fixup commit are written | |
69 | * to it. The commit message for each subsequent squash/fixup commit | |
70 | * is appended to the file as it is processed. | |
71 | * | |
72 | * The first line of the file is of the form | |
73 | * # This is a combination of $count commits. | |
74 | * where $count is the number of commits whose messages have been | |
75 | * written to the file so far (including the initial "pick" commit). | |
76 | * Each time that a commit message is processed, this line is read and | |
77 | * updated. It is deleted just before the combined commit is made. | |
78 | */ | |
79 | static GIT_PATH_FUNC(rebase_path_squash_msg, "rebase-merge/message-squash") | |
80 | /* | |
81 | * If the current series of squash/fixups has not yet included a squash | |
82 | * command, then this file exists and holds the commit message of the | |
83 | * original "pick" commit. (If the series ends without a "squash" | |
84 | * command, then this can be used as the commit message of the combined | |
85 | * commit without opening the editor.) | |
86 | */ | |
87 | static GIT_PATH_FUNC(rebase_path_fixup_msg, "rebase-merge/message-fixup") | |
b5a67045 JS |
88 | /* |
89 | * A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and | |
90 | * GIT_AUTHOR_DATE that will be used for the commit that is currently | |
91 | * being rebased. | |
92 | */ | |
93 | static GIT_PATH_FUNC(rebase_path_author_script, "rebase-merge/author-script") | |
56dc3ab0 JS |
94 | /* |
95 | * When an "edit" rebase command is being processed, the SHA1 of the | |
96 | * commit to be edited is recorded in this file. When "git rebase | |
97 | * --continue" is executed, if there are any staged changes then they | |
98 | * will be amended to the HEAD commit, but only provided the HEAD | |
99 | * commit is still the commit to be edited. When any other rebase | |
100 | * command is processed, this file is deleted. | |
101 | */ | |
102 | static GIT_PATH_FUNC(rebase_path_amend, "rebase-merge/amend") | |
103 | /* | |
104 | * When we stop at a given patch via the "edit" command, this file contains | |
105 | * the abbreviated commit name of the corresponding patch. | |
106 | */ | |
107 | static GIT_PATH_FUNC(rebase_path_stopped_sha, "rebase-merge/stopped-sha") | |
25cb8df9 JS |
108 | /* |
109 | * For the post-rewrite hook, we make a list of rewritten commits and | |
110 | * their new sha1s. The rewritten-pending list keeps the sha1s of | |
111 | * commits that have been processed, but not committed yet, | |
112 | * e.g. because they are waiting for a 'squash' command. | |
113 | */ | |
114 | static GIT_PATH_FUNC(rebase_path_rewritten_list, "rebase-merge/rewritten-list") | |
115 | static GIT_PATH_FUNC(rebase_path_rewritten_pending, | |
116 | "rebase-merge/rewritten-pending") | |
a1c75762 JS |
117 | /* |
118 | * The following files are written by git-rebase just after parsing the | |
119 | * command-line (and are only consumed, not modified, by the sequencer). | |
120 | */ | |
121 | static GIT_PATH_FUNC(rebase_path_gpg_sign_opt, "rebase-merge/gpg_sign_opt") | |
556907f1 JS |
122 | static GIT_PATH_FUNC(rebase_path_orig_head, "rebase-merge/orig-head") |
123 | static GIT_PATH_FUNC(rebase_path_verbose, "rebase-merge/verbose") | |
4b83ce9f JS |
124 | static GIT_PATH_FUNC(rebase_path_head_name, "rebase-merge/head-name") |
125 | static GIT_PATH_FUNC(rebase_path_onto, "rebase-merge/onto") | |
796c7972 | 126 | static GIT_PATH_FUNC(rebase_path_autostash, "rebase-merge/autostash") |
ca6c6b45 JS |
127 | static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy") |
128 | static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts") | |
b5a67045 | 129 | |
b5a67045 JS |
130 | static inline int is_rebase_i(const struct replay_opts *opts) |
131 | { | |
84583957 | 132 | return opts->action == REPLAY_INTERACTIVE_REBASE; |
b5a67045 JS |
133 | } |
134 | ||
285abf56 JS |
135 | static const char *get_dir(const struct replay_opts *opts) |
136 | { | |
84583957 JS |
137 | if (is_rebase_i(opts)) |
138 | return rebase_path(); | |
285abf56 JS |
139 | return git_path_seq_dir(); |
140 | } | |
141 | ||
c0246501 JS |
142 | static const char *get_todo_path(const struct replay_opts *opts) |
143 | { | |
84583957 JS |
144 | if (is_rebase_i(opts)) |
145 | return rebase_path_todo(); | |
c0246501 JS |
146 | return git_path_todo_file(); |
147 | } | |
148 | ||
bab4d109 BC |
149 | /* |
150 | * Returns 0 for non-conforming footer | |
151 | * Returns 1 for conforming footer | |
152 | * Returns 2 when sob exists within conforming footer | |
153 | * Returns 3 when sob exists within conforming footer as last entry | |
154 | */ | |
155 | static int has_conforming_footer(struct strbuf *sb, struct strbuf *sob, | |
156 | int ignore_footer) | |
b971e04f | 157 | { |
967dfd4d JT |
158 | struct trailer_info info; |
159 | int i; | |
160 | int found_sob = 0, found_sob_last = 0; | |
b971e04f | 161 | |
967dfd4d | 162 | trailer_info_get(&info, sb->buf); |
b971e04f | 163 | |
967dfd4d | 164 | if (info.trailer_start == info.trailer_end) |
b971e04f BC |
165 | return 0; |
166 | ||
967dfd4d JT |
167 | for (i = 0; i < info.trailer_nr; i++) |
168 | if (sob && !strncmp(info.trailers[i], sob->buf, sob->len)) { | |
169 | found_sob = 1; | |
170 | if (i == info.trailer_nr - 1) | |
171 | found_sob_last = 1; | |
172 | } | |
b971e04f | 173 | |
967dfd4d | 174 | trailer_info_release(&info); |
bab4d109 | 175 | |
967dfd4d | 176 | if (found_sob_last) |
bab4d109 BC |
177 | return 3; |
178 | if (found_sob) | |
179 | return 2; | |
b971e04f BC |
180 | return 1; |
181 | } | |
5ed75e2a | 182 | |
a1c75762 JS |
183 | static const char *gpg_sign_opt_quoted(struct replay_opts *opts) |
184 | { | |
185 | static struct strbuf buf = STRBUF_INIT; | |
186 | ||
187 | strbuf_reset(&buf); | |
188 | if (opts->gpg_sign) | |
189 | sq_quotef(&buf, "-S%s", opts->gpg_sign); | |
190 | return buf.buf; | |
191 | } | |
192 | ||
2863584f | 193 | int sequencer_remove_state(struct replay_opts *opts) |
26ae337b | 194 | { |
285abf56 | 195 | struct strbuf dir = STRBUF_INIT; |
03a4e260 JS |
196 | int i; |
197 | ||
198 | free(opts->gpg_sign); | |
199 | free(opts->strategy); | |
200 | for (i = 0; i < opts->xopts_nr; i++) | |
201 | free(opts->xopts[i]); | |
202 | free(opts->xopts); | |
26ae337b | 203 | |
285abf56 JS |
204 | strbuf_addf(&dir, "%s", get_dir(opts)); |
205 | remove_dir_recursively(&dir, 0); | |
206 | strbuf_release(&dir); | |
2863584f JS |
207 | |
208 | return 0; | |
26ae337b | 209 | } |
043a4492 RR |
210 | |
211 | static const char *action_name(const struct replay_opts *opts) | |
212 | { | |
84583957 JS |
213 | switch (opts->action) { |
214 | case REPLAY_REVERT: | |
215 | return N_("revert"); | |
216 | case REPLAY_PICK: | |
217 | return N_("cherry-pick"); | |
218 | case REPLAY_INTERACTIVE_REBASE: | |
219 | return N_("rebase -i"); | |
220 | } | |
221 | die(_("Unknown action: %d"), opts->action); | |
043a4492 RR |
222 | } |
223 | ||
043a4492 RR |
224 | struct commit_message { |
225 | char *parent_label; | |
7b35eaf8 JK |
226 | char *label; |
227 | char *subject; | |
043a4492 RR |
228 | const char *message; |
229 | }; | |
230 | ||
39755964 JS |
231 | static const char *short_commit_name(struct commit *commit) |
232 | { | |
233 | return find_unique_abbrev(commit->object.oid.hash, DEFAULT_ABBREV); | |
234 | } | |
235 | ||
043a4492 RR |
236 | static int get_message(struct commit *commit, struct commit_message *out) |
237 | { | |
043a4492 | 238 | const char *abbrev, *subject; |
7b35eaf8 | 239 | int subject_len; |
043a4492 | 240 | |
7b35eaf8 | 241 | out->message = logmsg_reencode(commit, NULL, get_commit_output_encoding()); |
39755964 | 242 | abbrev = short_commit_name(commit); |
043a4492 RR |
243 | |
244 | subject_len = find_commit_subject(out->message, &subject); | |
245 | ||
7b35eaf8 JK |
246 | out->subject = xmemdupz(subject, subject_len); |
247 | out->label = xstrfmt("%s... %s", abbrev, out->subject); | |
248 | out->parent_label = xstrfmt("parent of %s", out->label); | |
249 | ||
043a4492 RR |
250 | return 0; |
251 | } | |
252 | ||
d74a4e57 | 253 | static void free_message(struct commit *commit, struct commit_message *msg) |
043a4492 RR |
254 | { |
255 | free(msg->parent_label); | |
7b35eaf8 JK |
256 | free(msg->label); |
257 | free(msg->subject); | |
b66103c3 | 258 | unuse_commit_buffer(commit, msg->message); |
043a4492 RR |
259 | } |
260 | ||
ed727b19 | 261 | static void print_advice(int show_hint, struct replay_opts *opts) |
043a4492 RR |
262 | { |
263 | char *msg = getenv("GIT_CHERRY_PICK_HELP"); | |
264 | ||
265 | if (msg) { | |
266 | fprintf(stderr, "%s\n", msg); | |
267 | /* | |
41ccfdd9 | 268 | * A conflict has occurred but the porcelain |
043a4492 RR |
269 | * (typically rebase --interactive) wants to take care |
270 | * of the commit itself so remove CHERRY_PICK_HEAD | |
271 | */ | |
f932729c | 272 | unlink(git_path_cherry_pick_head()); |
043a4492 RR |
273 | return; |
274 | } | |
275 | ||
ed727b19 PH |
276 | if (show_hint) { |
277 | if (opts->no_commit) | |
278 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
279 | "with 'git add <paths>' or 'git rm <paths>'")); | |
280 | else | |
281 | advise(_("after resolving the conflicts, mark the corrected paths\n" | |
282 | "with 'git add <paths>' or 'git rm <paths>'\n" | |
283 | "and commit the result with 'git commit'")); | |
284 | } | |
043a4492 RR |
285 | } |
286 | ||
f56fffef JS |
287 | static int write_message(const void *buf, size_t len, const char *filename, |
288 | int append_eol) | |
043a4492 RR |
289 | { |
290 | static struct lock_file msg_file; | |
291 | ||
4ef3d8f0 JS |
292 | int msg_fd = hold_lock_file_for_update(&msg_file, filename, 0); |
293 | if (msg_fd < 0) | |
93b3df6f | 294 | return error_errno(_("could not lock '%s'"), filename); |
75871495 | 295 | if (write_in_full(msg_fd, buf, len) < 0) { |
4f66c837 | 296 | rollback_lock_file(&msg_file); |
93b3df6f | 297 | return error_errno(_("could not write to '%s'"), filename); |
4f66c837 | 298 | } |
f56fffef JS |
299 | if (append_eol && write(msg_fd, "\n", 1) < 0) { |
300 | rollback_lock_file(&msg_file); | |
35871806 | 301 | return error_errno(_("could not write eol to '%s'"), filename); |
f56fffef | 302 | } |
4f66c837 JS |
303 | if (commit_lock_file(&msg_file) < 0) { |
304 | rollback_lock_file(&msg_file); | |
93b3df6f | 305 | return error(_("failed to finalize '%s'."), filename); |
4f66c837 | 306 | } |
4ef3d8f0 JS |
307 | |
308 | return 0; | |
043a4492 RR |
309 | } |
310 | ||
1dfc84e9 JS |
311 | /* |
312 | * Reads a file that was presumably written by a shell script, i.e. with an | |
313 | * end-of-line marker that needs to be stripped. | |
314 | * | |
315 | * Note that only the last end-of-line marker is stripped, consistent with the | |
316 | * behavior of "$(cat path)" in a shell script. | |
317 | * | |
318 | * Returns 1 if the file was read, 0 if it could not be read or does not exist. | |
319 | */ | |
320 | static int read_oneliner(struct strbuf *buf, | |
321 | const char *path, int skip_if_empty) | |
322 | { | |
323 | int orig_len = buf->len; | |
324 | ||
325 | if (!file_exists(path)) | |
326 | return 0; | |
327 | ||
328 | if (strbuf_read_file(buf, path, 0) < 0) { | |
329 | warning_errno(_("could not read '%s'"), path); | |
330 | return 0; | |
331 | } | |
332 | ||
333 | if (buf->len > orig_len && buf->buf[buf->len - 1] == '\n') { | |
334 | if (--buf->len > orig_len && buf->buf[buf->len - 1] == '\r') | |
335 | --buf->len; | |
336 | buf->buf[buf->len] = '\0'; | |
337 | } | |
338 | ||
339 | if (skip_if_empty && buf->len == orig_len) | |
340 | return 0; | |
341 | ||
342 | return 1; | |
343 | } | |
344 | ||
043a4492 RR |
345 | static struct tree *empty_tree(void) |
346 | { | |
cba595bd | 347 | return lookup_tree(EMPTY_TREE_SHA1_BIN); |
043a4492 RR |
348 | } |
349 | ||
350 | static int error_dirty_index(struct replay_opts *opts) | |
351 | { | |
352 | if (read_cache_unmerged()) | |
c28cbc5e | 353 | return error_resolve_conflict(_(action_name(opts))); |
043a4492 | 354 | |
93b3df6f | 355 | error(_("your local changes would be overwritten by %s."), |
c28cbc5e | 356 | _(action_name(opts))); |
043a4492 RR |
357 | |
358 | if (advice_commit_before_merge) | |
93b3df6f | 359 | advise(_("commit your changes or stash them to proceed.")); |
043a4492 RR |
360 | return -1; |
361 | } | |
362 | ||
1e41229d SB |
363 | static void update_abort_safety_file(void) |
364 | { | |
365 | struct object_id head; | |
366 | ||
367 | /* Do nothing on a single-pick */ | |
368 | if (!file_exists(git_path_seq_dir())) | |
369 | return; | |
370 | ||
371 | if (!get_oid("HEAD", &head)) | |
372 | write_file(git_path_abort_safety_file(), "%s", oid_to_hex(&head)); | |
373 | else | |
374 | write_file(git_path_abort_safety_file(), "%s", ""); | |
375 | } | |
376 | ||
334ae397 | 377 | static int fast_forward_to(const unsigned char *to, const unsigned char *from, |
eb4be1cb | 378 | int unborn, struct replay_opts *opts) |
043a4492 | 379 | { |
d668d16c | 380 | struct ref_transaction *transaction; |
eb4be1cb | 381 | struct strbuf sb = STRBUF_INIT; |
d668d16c | 382 | struct strbuf err = STRBUF_INIT; |
043a4492 RR |
383 | |
384 | read_cache(); | |
db699a8a | 385 | if (checkout_fast_forward(from, to, 1)) |
0e408fc3 | 386 | return -1; /* the callee should have complained already */ |
651ab9f5 | 387 | |
c28cbc5e | 388 | strbuf_addf(&sb, _("%s: fast-forward"), _(action_name(opts))); |
d668d16c RS |
389 | |
390 | transaction = ref_transaction_begin(&err); | |
391 | if (!transaction || | |
392 | ref_transaction_update(transaction, "HEAD", | |
393 | to, unborn ? null_sha1 : from, | |
1d147bdf | 394 | 0, sb.buf, &err) || |
db7516ab | 395 | ref_transaction_commit(transaction, &err)) { |
d668d16c RS |
396 | ref_transaction_free(transaction); |
397 | error("%s", err.buf); | |
398 | strbuf_release(&sb); | |
399 | strbuf_release(&err); | |
400 | return -1; | |
401 | } | |
651ab9f5 | 402 | |
eb4be1cb | 403 | strbuf_release(&sb); |
d668d16c RS |
404 | strbuf_release(&err); |
405 | ref_transaction_free(transaction); | |
1e41229d | 406 | update_abort_safety_file(); |
d668d16c | 407 | return 0; |
043a4492 RR |
408 | } |
409 | ||
75c961b7 JH |
410 | void append_conflicts_hint(struct strbuf *msgbuf) |
411 | { | |
412 | int i; | |
413 | ||
261f315b JH |
414 | strbuf_addch(msgbuf, '\n'); |
415 | strbuf_commented_addf(msgbuf, "Conflicts:\n"); | |
75c961b7 JH |
416 | for (i = 0; i < active_nr;) { |
417 | const struct cache_entry *ce = active_cache[i++]; | |
418 | if (ce_stage(ce)) { | |
261f315b | 419 | strbuf_commented_addf(msgbuf, "\t%s\n", ce->name); |
75c961b7 JH |
420 | while (i < active_nr && !strcmp(ce->name, |
421 | active_cache[i]->name)) | |
422 | i++; | |
423 | } | |
424 | } | |
425 | } | |
426 | ||
043a4492 RR |
427 | static int do_recursive_merge(struct commit *base, struct commit *next, |
428 | const char *base_label, const char *next_label, | |
429 | unsigned char *head, struct strbuf *msgbuf, | |
430 | struct replay_opts *opts) | |
431 | { | |
432 | struct merge_options o; | |
433 | struct tree *result, *next_tree, *base_tree, *head_tree; | |
03b86647 | 434 | int clean; |
03a4e260 | 435 | char **xopt; |
043a4492 RR |
436 | static struct lock_file index_lock; |
437 | ||
b3e83cc7 | 438 | hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR); |
043a4492 RR |
439 | |
440 | read_cache(); | |
441 | ||
442 | init_merge_options(&o); | |
443 | o.ancestor = base ? base_label : "(empty tree)"; | |
444 | o.branch1 = "HEAD"; | |
445 | o.branch2 = next ? next_label : "(empty tree)"; | |
62fdb652 JS |
446 | if (is_rebase_i(opts)) |
447 | o.buffer_output = 2; | |
043a4492 RR |
448 | |
449 | head_tree = parse_tree_indirect(head); | |
450 | next_tree = next ? next->tree : empty_tree(); | |
451 | base_tree = base ? base->tree : empty_tree(); | |
452 | ||
453 | for (xopt = opts->xopts; xopt != opts->xopts + opts->xopts_nr; xopt++) | |
454 | parse_merge_opt(&o, *xopt); | |
455 | ||
456 | clean = merge_trees(&o, | |
457 | head_tree, | |
458 | next_tree, base_tree, &result); | |
62fdb652 JS |
459 | if (is_rebase_i(opts) && clean <= 0) |
460 | fputs(o.obuf.buf, stdout); | |
548009c0 | 461 | strbuf_release(&o.obuf); |
f241ff0d JS |
462 | if (clean < 0) |
463 | return clean; | |
043a4492 RR |
464 | |
465 | if (active_cache_changed && | |
03b86647 | 466 | write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) |
84583957 JS |
467 | /* TRANSLATORS: %s will be "revert", "cherry-pick" or |
468 | * "rebase -i". | |
469 | */ | |
c527b55e | 470 | return error(_("%s: Unable to write new index file"), |
c28cbc5e | 471 | _(action_name(opts))); |
043a4492 RR |
472 | rollback_lock_file(&index_lock); |
473 | ||
5ed75e2a | 474 | if (opts->signoff) |
bab4d109 | 475 | append_signoff(msgbuf, 0, 0); |
5ed75e2a | 476 | |
75c961b7 JH |
477 | if (!clean) |
478 | append_conflicts_hint(msgbuf); | |
043a4492 RR |
479 | |
480 | return !clean; | |
481 | } | |
482 | ||
b27cfb0d NH |
483 | static int is_index_unchanged(void) |
484 | { | |
485 | unsigned char head_sha1[20]; | |
486 | struct commit *head_commit; | |
487 | ||
7695d118 | 488 | if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_sha1, NULL)) |
93b3df6f | 489 | return error(_("could not resolve HEAD commit\n")); |
b27cfb0d NH |
490 | |
491 | head_commit = lookup_commit(head_sha1); | |
4b580061 NH |
492 | |
493 | /* | |
494 | * If head_commit is NULL, check_commit, called from | |
495 | * lookup_commit, would have indicated that head_commit is not | |
496 | * a commit object already. parse_commit() will return failure | |
497 | * without further complaints in such a case. Otherwise, if | |
498 | * the commit is invalid, parse_commit() will complain. So | |
499 | * there is nothing for us to say here. Just return failure. | |
500 | */ | |
501 | if (parse_commit(head_commit)) | |
502 | return -1; | |
b27cfb0d NH |
503 | |
504 | if (!active_cache_tree) | |
505 | active_cache_tree = cache_tree(); | |
506 | ||
507 | if (!cache_tree_fully_valid(active_cache_tree)) | |
d0cfc3e8 | 508 | if (cache_tree_update(&the_index, 0)) |
93b3df6f | 509 | return error(_("unable to update cache tree\n")); |
b27cfb0d | 510 | |
ed1c9977 | 511 | return !hashcmp(active_cache_tree->sha1, head_commit->tree->object.oid.hash); |
b27cfb0d NH |
512 | } |
513 | ||
0473f28a JS |
514 | static int write_author_script(const char *message) |
515 | { | |
516 | struct strbuf buf = STRBUF_INIT; | |
517 | const char *eol; | |
518 | int res; | |
519 | ||
520 | for (;;) | |
521 | if (!*message || starts_with(message, "\n")) { | |
522 | missing_author: | |
523 | /* Missing 'author' line? */ | |
524 | unlink(rebase_path_author_script()); | |
525 | return 0; | |
526 | } else if (skip_prefix(message, "author ", &message)) | |
527 | break; | |
528 | else if ((eol = strchr(message, '\n'))) | |
529 | message = eol + 1; | |
530 | else | |
531 | goto missing_author; | |
532 | ||
533 | strbuf_addstr(&buf, "GIT_AUTHOR_NAME='"); | |
534 | while (*message && *message != '\n' && *message != '\r') | |
535 | if (skip_prefix(message, " <", &message)) | |
536 | break; | |
537 | else if (*message != '\'') | |
538 | strbuf_addch(&buf, *(message++)); | |
539 | else | |
540 | strbuf_addf(&buf, "'\\\\%c'", *(message++)); | |
541 | strbuf_addstr(&buf, "'\nGIT_AUTHOR_EMAIL='"); | |
542 | while (*message && *message != '\n' && *message != '\r') | |
543 | if (skip_prefix(message, "> ", &message)) | |
544 | break; | |
545 | else if (*message != '\'') | |
546 | strbuf_addch(&buf, *(message++)); | |
547 | else | |
548 | strbuf_addf(&buf, "'\\\\%c'", *(message++)); | |
549 | strbuf_addstr(&buf, "'\nGIT_AUTHOR_DATE='@"); | |
550 | while (*message && *message != '\n' && *message != '\r') | |
551 | if (*message != '\'') | |
552 | strbuf_addch(&buf, *(message++)); | |
553 | else | |
554 | strbuf_addf(&buf, "'\\\\%c'", *(message++)); | |
555 | res = write_message(buf.buf, buf.len, rebase_path_author_script(), 1); | |
556 | strbuf_release(&buf); | |
557 | return res; | |
558 | } | |
559 | ||
b5a67045 | 560 | /* |
a2a20b0d JS |
561 | * Read a list of environment variable assignments (such as the author-script |
562 | * file) into an environment block. Returns -1 on error, 0 otherwise. | |
b5a67045 | 563 | */ |
a2a20b0d | 564 | static int read_env_script(struct argv_array *env) |
b5a67045 JS |
565 | { |
566 | struct strbuf script = STRBUF_INIT; | |
567 | int i, count = 0; | |
a2a20b0d | 568 | char *p, *p2; |
b5a67045 JS |
569 | |
570 | if (strbuf_read_file(&script, rebase_path_author_script(), 256) <= 0) | |
a2a20b0d | 571 | return -1; |
b5a67045 JS |
572 | |
573 | for (p = script.buf; *p; p++) | |
574 | if (skip_prefix(p, "'\\\\''", (const char **)&p2)) | |
575 | strbuf_splice(&script, p - script.buf, p2 - p, "'", 1); | |
576 | else if (*p == '\'') | |
577 | strbuf_splice(&script, p-- - script.buf, 1, "", 0); | |
578 | else if (*p == '\n') { | |
579 | *p = '\0'; | |
580 | count++; | |
581 | } | |
582 | ||
a2a20b0d JS |
583 | for (i = 0, p = script.buf; i < count; i++) { |
584 | argv_array_push(env, p); | |
b5a67045 JS |
585 | p += strlen(p) + 1; |
586 | } | |
b5a67045 | 587 | |
a2a20b0d | 588 | return 0; |
b5a67045 JS |
589 | } |
590 | ||
791eb870 JS |
591 | static const char staged_changes_advice[] = |
592 | N_("you have staged changes in your working tree\n" | |
593 | "If these changes are meant to be squashed into the previous commit, run:\n" | |
594 | "\n" | |
595 | " git commit --amend %s\n" | |
596 | "\n" | |
597 | "If they are meant to go into a new commit, run:\n" | |
598 | "\n" | |
599 | " git commit %s\n" | |
600 | "\n" | |
601 | "In both cases, once you're done, continue with:\n" | |
602 | "\n" | |
603 | " git rebase --continue\n"); | |
604 | ||
789b3eff JS |
605 | #define ALLOW_EMPTY (1<<0) |
606 | #define EDIT_MSG (1<<1) | |
607 | #define AMEND_MSG (1<<2) | |
608 | #define CLEANUP_MSG (1<<3) | |
609 | ||
043a4492 RR |
610 | /* |
611 | * If we are cherry-pick, and if the merge did not result in | |
612 | * hand-editing, we will hit this commit and inherit the original | |
613 | * author date and name. | |
b5a67045 | 614 | * |
043a4492 RR |
615 | * If we are revert, or if our cherry-pick results in a hand merge, |
616 | * we had better say that the current user is responsible for that. | |
b5a67045 JS |
617 | * |
618 | * An exception is when run_git_commit() is called during an | |
619 | * interactive rebase: in that case, we will want to retain the | |
620 | * author metadata. | |
043a4492 | 621 | */ |
ac2b0e8f | 622 | static int run_git_commit(const char *defmsg, struct replay_opts *opts, |
789b3eff | 623 | unsigned int flags) |
043a4492 | 624 | { |
07d968ef | 625 | struct child_process cmd = CHILD_PROCESS_INIT; |
17d65f03 | 626 | const char *value; |
b27cfb0d | 627 | |
07d968ef JS |
628 | cmd.git_cmd = 1; |
629 | ||
b5a67045 | 630 | if (is_rebase_i(opts)) { |
789b3eff | 631 | if (!(flags & EDIT_MSG)) { |
9a757c49 JS |
632 | cmd.stdout_to_stderr = 1; |
633 | cmd.err = -1; | |
634 | } | |
635 | ||
07d968ef | 636 | if (read_env_script(&cmd.env_array)) { |
a1c75762 JS |
637 | const char *gpg_opt = gpg_sign_opt_quoted(opts); |
638 | ||
791eb870 JS |
639 | return error(_(staged_changes_advice), |
640 | gpg_opt, gpg_opt); | |
a1c75762 | 641 | } |
b5a67045 JS |
642 | } |
643 | ||
07d968ef JS |
644 | argv_array_push(&cmd.args, "commit"); |
645 | argv_array_push(&cmd.args, "-n"); | |
043a4492 | 646 | |
789b3eff | 647 | if ((flags & AMEND_MSG)) |
07d968ef | 648 | argv_array_push(&cmd.args, "--amend"); |
3bdd5522 | 649 | if (opts->gpg_sign) |
07d968ef | 650 | argv_array_pushf(&cmd.args, "-S%s", opts->gpg_sign); |
043a4492 | 651 | if (opts->signoff) |
07d968ef | 652 | argv_array_push(&cmd.args, "-s"); |
b5a67045 | 653 | if (defmsg) |
07d968ef | 654 | argv_array_pushl(&cmd.args, "-F", defmsg, NULL); |
789b3eff | 655 | if ((flags & CLEANUP_MSG)) |
07d968ef | 656 | argv_array_push(&cmd.args, "--cleanup=strip"); |
789b3eff | 657 | if ((flags & EDIT_MSG)) |
07d968ef | 658 | argv_array_push(&cmd.args, "-e"); |
789b3eff | 659 | else if (!(flags & CLEANUP_MSG) && |
0009426d | 660 | !opts->signoff && !opts->record_origin && |
b5a67045 | 661 | git_config_get_value("commit.cleanup", &value)) |
07d968ef | 662 | argv_array_push(&cmd.args, "--cleanup=verbatim"); |
b27cfb0d | 663 | |
789b3eff | 664 | if ((flags & ALLOW_EMPTY)) |
07d968ef | 665 | argv_array_push(&cmd.args, "--allow-empty"); |
df478b74 | 666 | |
4bee9584 | 667 | if (opts->allow_empty_message) |
07d968ef | 668 | argv_array_push(&cmd.args, "--allow-empty-message"); |
4bee9584 | 669 | |
9a757c49 JS |
670 | if (cmd.err == -1) { |
671 | /* hide stderr on success */ | |
672 | struct strbuf buf = STRBUF_INIT; | |
673 | int rc = pipe_command(&cmd, | |
674 | NULL, 0, | |
675 | /* stdout is already redirected */ | |
676 | NULL, 0, | |
677 | &buf, 0); | |
678 | if (rc) | |
679 | fputs(buf.buf, stderr); | |
680 | strbuf_release(&buf); | |
681 | return rc; | |
682 | } | |
b5a67045 | 683 | |
07d968ef | 684 | return run_command(&cmd); |
b27cfb0d NH |
685 | } |
686 | ||
687 | static int is_original_commit_empty(struct commit *commit) | |
688 | { | |
689 | const unsigned char *ptree_sha1; | |
690 | ||
691 | if (parse_commit(commit)) | |
93b3df6f | 692 | return error(_("could not parse commit %s\n"), |
f2fd0760 | 693 | oid_to_hex(&commit->object.oid)); |
b27cfb0d NH |
694 | if (commit->parents) { |
695 | struct commit *parent = commit->parents->item; | |
696 | if (parse_commit(parent)) | |
93b3df6f | 697 | return error(_("could not parse parent commit %s\n"), |
f2fd0760 | 698 | oid_to_hex(&parent->object.oid)); |
ed1c9977 | 699 | ptree_sha1 = parent->tree->object.oid.hash; |
b27cfb0d NH |
700 | } else { |
701 | ptree_sha1 = EMPTY_TREE_SHA1_BIN; /* commit is root */ | |
043a4492 | 702 | } |
043a4492 | 703 | |
ed1c9977 | 704 | return !hashcmp(ptree_sha1, commit->tree->object.oid.hash); |
043a4492 RR |
705 | } |
706 | ||
ac2b0e8f JH |
707 | /* |
708 | * Do we run "git commit" with "--allow-empty"? | |
709 | */ | |
710 | static int allow_empty(struct replay_opts *opts, struct commit *commit) | |
711 | { | |
712 | int index_unchanged, empty_commit; | |
713 | ||
714 | /* | |
715 | * Three cases: | |
716 | * | |
717 | * (1) we do not allow empty at all and error out. | |
718 | * | |
719 | * (2) we allow ones that were initially empty, but | |
720 | * forbid the ones that become empty; | |
721 | * | |
722 | * (3) we allow both. | |
723 | */ | |
724 | if (!opts->allow_empty) | |
725 | return 0; /* let "git commit" barf as necessary */ | |
726 | ||
727 | index_unchanged = is_index_unchanged(); | |
728 | if (index_unchanged < 0) | |
729 | return index_unchanged; | |
730 | if (!index_unchanged) | |
731 | return 0; /* we do not have to say --allow-empty */ | |
732 | ||
733 | if (opts->keep_redundant_commits) | |
734 | return 1; | |
735 | ||
736 | empty_commit = is_original_commit_empty(commit); | |
737 | if (empty_commit < 0) | |
738 | return empty_commit; | |
739 | if (!empty_commit) | |
740 | return 0; | |
741 | else | |
742 | return 1; | |
743 | } | |
744 | ||
25c43667 JS |
745 | /* |
746 | * Note that ordering matters in this enum. Not only must it match the mapping | |
747 | * below, it is also divided into several sections that matter. When adding | |
748 | * new commands, make sure you add it in the right section. | |
749 | */ | |
004fefa7 | 750 | enum todo_command { |
25c43667 | 751 | /* commands that handle commits */ |
004fefa7 | 752 | TODO_PICK = 0, |
25c43667 | 753 | TODO_REVERT, |
56dc3ab0 | 754 | TODO_EDIT, |
04efc8b5 | 755 | TODO_REWORD, |
6e98de72 JS |
756 | TODO_FIXUP, |
757 | TODO_SQUASH, | |
311af526 JS |
758 | /* commands that do something else than handling a single commit */ |
759 | TODO_EXEC, | |
25c43667 | 760 | /* commands that do nothing but are counted for reporting progress */ |
b3fdd581 | 761 | TODO_NOOP, |
ac191470 JS |
762 | TODO_DROP, |
763 | /* comments (not counted for reporting progress) */ | |
764 | TODO_COMMENT | |
004fefa7 JS |
765 | }; |
766 | ||
414697a9 JS |
767 | static struct { |
768 | char c; | |
769 | const char *str; | |
770 | } todo_command_info[] = { | |
771 | { 'p', "pick" }, | |
772 | { 0, "revert" }, | |
773 | { 'e', "edit" }, | |
04efc8b5 | 774 | { 'r', "reword" }, |
414697a9 JS |
775 | { 'f', "fixup" }, |
776 | { 's', "squash" }, | |
777 | { 'x', "exec" }, | |
b3fdd581 | 778 | { 0, "noop" }, |
ac191470 JS |
779 | { 'd', "drop" }, |
780 | { 0, NULL } | |
004fefa7 JS |
781 | }; |
782 | ||
783 | static const char *command_to_string(const enum todo_command command) | |
784 | { | |
ac191470 | 785 | if (command < TODO_COMMENT) |
414697a9 | 786 | return todo_command_info[command].str; |
004fefa7 JS |
787 | die("Unknown command: %d", command); |
788 | } | |
789 | ||
25c43667 JS |
790 | static int is_noop(const enum todo_command command) |
791 | { | |
b3fdd581 | 792 | return TODO_NOOP <= command; |
25c43667 | 793 | } |
004fefa7 | 794 | |
6e98de72 JS |
795 | static int is_fixup(enum todo_command command) |
796 | { | |
797 | return command == TODO_FIXUP || command == TODO_SQUASH; | |
798 | } | |
799 | ||
800 | static int update_squash_messages(enum todo_command command, | |
801 | struct commit *commit, struct replay_opts *opts) | |
802 | { | |
803 | struct strbuf buf = STRBUF_INIT; | |
804 | int count, res; | |
805 | const char *message, *body; | |
806 | ||
807 | if (file_exists(rebase_path_squash_msg())) { | |
808 | struct strbuf header = STRBUF_INIT; | |
809 | char *eol, *p; | |
810 | ||
811 | if (strbuf_read_file(&buf, rebase_path_squash_msg(), 2048) <= 0) | |
812 | return error(_("could not read '%s'"), | |
813 | rebase_path_squash_msg()); | |
814 | ||
815 | p = buf.buf + 1; | |
816 | eol = strchrnul(buf.buf, '\n'); | |
817 | if (buf.buf[0] != comment_line_char || | |
818 | (p += strcspn(p, "0123456789\n")) == eol) | |
819 | return error(_("unexpected 1st line of squash message:" | |
820 | "\n\n\t%.*s"), | |
821 | (int)(eol - buf.buf), buf.buf); | |
822 | count = strtol(p, NULL, 10); | |
823 | ||
824 | if (count < 1) | |
825 | return error(_("invalid 1st line of squash message:\n" | |
826 | "\n\t%.*s"), | |
827 | (int)(eol - buf.buf), buf.buf); | |
828 | ||
829 | strbuf_addf(&header, "%c ", comment_line_char); | |
830 | strbuf_addf(&header, | |
831 | _("This is a combination of %d commits."), ++count); | |
832 | strbuf_splice(&buf, 0, eol - buf.buf, header.buf, header.len); | |
833 | strbuf_release(&header); | |
834 | } else { | |
835 | unsigned char head[20]; | |
836 | struct commit *head_commit; | |
837 | const char *head_message, *body; | |
838 | ||
839 | if (get_sha1("HEAD", head)) | |
840 | return error(_("need a HEAD to fixup")); | |
841 | if (!(head_commit = lookup_commit_reference(head))) | |
842 | return error(_("could not read HEAD")); | |
843 | if (!(head_message = get_commit_buffer(head_commit, NULL))) | |
844 | return error(_("could not read HEAD's commit message")); | |
845 | ||
846 | find_commit_subject(head_message, &body); | |
847 | if (write_message(body, strlen(body), | |
848 | rebase_path_fixup_msg(), 0)) { | |
849 | unuse_commit_buffer(head_commit, head_message); | |
850 | return error(_("cannot write '%s'"), | |
851 | rebase_path_fixup_msg()); | |
852 | } | |
853 | ||
854 | count = 2; | |
855 | strbuf_addf(&buf, "%c ", comment_line_char); | |
856 | strbuf_addf(&buf, _("This is a combination of %d commits."), | |
857 | count); | |
858 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
859 | strbuf_addstr(&buf, _("This is the 1st commit message:")); | |
860 | strbuf_addstr(&buf, "\n\n"); | |
861 | strbuf_addstr(&buf, body); | |
862 | ||
863 | unuse_commit_buffer(head_commit, head_message); | |
864 | } | |
865 | ||
866 | if (!(message = get_commit_buffer(commit, NULL))) | |
867 | return error(_("could not read commit message of %s"), | |
868 | oid_to_hex(&commit->object.oid)); | |
869 | find_commit_subject(message, &body); | |
870 | ||
871 | if (command == TODO_SQUASH) { | |
872 | unlink(rebase_path_fixup_msg()); | |
873 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
874 | strbuf_addf(&buf, _("This is the commit message #%d:"), count); | |
875 | strbuf_addstr(&buf, "\n\n"); | |
876 | strbuf_addstr(&buf, body); | |
877 | } else if (command == TODO_FIXUP) { | |
878 | strbuf_addf(&buf, "\n%c ", comment_line_char); | |
879 | strbuf_addf(&buf, _("The commit message #%d will be skipped:"), | |
880 | count); | |
881 | strbuf_addstr(&buf, "\n\n"); | |
882 | strbuf_add_commented_lines(&buf, body, strlen(body)); | |
883 | } else | |
884 | return error(_("unknown command: %d"), command); | |
885 | unuse_commit_buffer(commit, message); | |
886 | ||
887 | res = write_message(buf.buf, buf.len, rebase_path_squash_msg(), 0); | |
888 | strbuf_release(&buf); | |
889 | return res; | |
890 | } | |
891 | ||
25cb8df9 JS |
892 | static void flush_rewritten_pending(void) { |
893 | struct strbuf buf = STRBUF_INIT; | |
894 | unsigned char newsha1[20]; | |
895 | FILE *out; | |
896 | ||
897 | if (strbuf_read_file(&buf, rebase_path_rewritten_pending(), 82) > 0 && | |
898 | !get_sha1("HEAD", newsha1) && | |
899 | (out = fopen(rebase_path_rewritten_list(), "a"))) { | |
900 | char *bol = buf.buf, *eol; | |
901 | ||
902 | while (*bol) { | |
903 | eol = strchrnul(bol, '\n'); | |
904 | fprintf(out, "%.*s %s\n", (int)(eol - bol), | |
905 | bol, sha1_to_hex(newsha1)); | |
906 | if (!*eol) | |
907 | break; | |
908 | bol = eol + 1; | |
909 | } | |
910 | fclose(out); | |
911 | unlink(rebase_path_rewritten_pending()); | |
912 | } | |
913 | strbuf_release(&buf); | |
914 | } | |
915 | ||
916 | static void record_in_rewritten(struct object_id *oid, | |
917 | enum todo_command next_command) { | |
918 | FILE *out = fopen(rebase_path_rewritten_pending(), "a"); | |
919 | ||
920 | if (!out) | |
921 | return; | |
922 | ||
923 | fprintf(out, "%s\n", oid_to_hex(oid)); | |
924 | fclose(out); | |
925 | ||
926 | if (!is_fixup(next_command)) | |
927 | flush_rewritten_pending(); | |
928 | } | |
929 | ||
004fefa7 | 930 | static int do_pick_commit(enum todo_command command, struct commit *commit, |
6e98de72 | 931 | struct replay_opts *opts, int final_fixup) |
043a4492 | 932 | { |
789b3eff JS |
933 | unsigned int flags = opts->edit ? EDIT_MSG : 0; |
934 | const char *msg_file = opts->edit ? NULL : git_path_merge_msg(); | |
043a4492 RR |
935 | unsigned char head[20]; |
936 | struct commit *base, *next, *parent; | |
937 | const char *base_label, *next_label; | |
d74a4e57 | 938 | struct commit_message msg = { NULL, NULL, NULL, NULL }; |
043a4492 | 939 | struct strbuf msgbuf = STRBUF_INIT; |
789b3eff | 940 | int res, unborn = 0, allow; |
043a4492 RR |
941 | |
942 | if (opts->no_commit) { | |
943 | /* | |
944 | * We do not intend to commit immediately. We just want to | |
945 | * merge the differences in, so let's compute the tree | |
946 | * that represents the "current" state for merge-recursive | |
947 | * to work on. | |
948 | */ | |
949 | if (write_cache_as_tree(head, 0, NULL)) | |
93b3df6f | 950 | return error(_("your index file is unmerged.")); |
043a4492 | 951 | } else { |
334ae397 MZ |
952 | unborn = get_sha1("HEAD", head); |
953 | if (unborn) | |
954 | hashcpy(head, EMPTY_TREE_SHA1_BIN); | |
018ec3c8 | 955 | if (index_differs_from(unborn ? EMPTY_TREE_SHA1_HEX : "HEAD", 0, 0)) |
043a4492 RR |
956 | return error_dirty_index(opts); |
957 | } | |
958 | discard_cache(); | |
959 | ||
637666c8 | 960 | if (!commit->parents) |
043a4492 | 961 | parent = NULL; |
043a4492 RR |
962 | else if (commit->parents->next) { |
963 | /* Reverting or cherry-picking a merge commit */ | |
964 | int cnt; | |
965 | struct commit_list *p; | |
966 | ||
967 | if (!opts->mainline) | |
93b3df6f | 968 | return error(_("commit %s is a merge but no -m option was given."), |
f2fd0760 | 969 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
970 | |
971 | for (cnt = 1, p = commit->parents; | |
972 | cnt != opts->mainline && p; | |
973 | cnt++) | |
974 | p = p->next; | |
975 | if (cnt != opts->mainline || !p) | |
93b3df6f | 976 | return error(_("commit %s does not have parent %d"), |
f2fd0760 | 977 | oid_to_hex(&commit->object.oid), opts->mainline); |
043a4492 RR |
978 | parent = p->item; |
979 | } else if (0 < opts->mainline) | |
93b3df6f | 980 | return error(_("mainline was specified but commit %s is not a merge."), |
f2fd0760 | 981 | oid_to_hex(&commit->object.oid)); |
043a4492 RR |
982 | else |
983 | parent = commit->parents->item; | |
984 | ||
bcbb68be JS |
985 | if (get_message(commit, &msg) != 0) |
986 | return error(_("cannot get commit message for %s"), | |
987 | oid_to_hex(&commit->object.oid)); | |
988 | ||
6e98de72 | 989 | if (opts->allow_ff && !is_fixup(command) && |
ed1c9977 | 990 | ((parent && !hashcmp(parent->object.oid.hash, head)) || |
bcbb68be JS |
991 | (!parent && unborn))) { |
992 | if (is_rebase_i(opts)) | |
993 | write_author_script(msg.message); | |
994 | res = fast_forward_to(commit->object.oid.hash, head, unborn, | |
995 | opts); | |
996 | if (res || command != TODO_REWORD) | |
997 | goto leave; | |
789b3eff | 998 | flags |= EDIT_MSG | AMEND_MSG; |
bcbb68be JS |
999 | msg_file = NULL; |
1000 | goto fast_forward_edit; | |
1001 | } | |
043a4492 | 1002 | if (parent && parse_commit(parent) < 0) |
004fefa7 JS |
1003 | /* TRANSLATORS: The first %s will be a "todo" command like |
1004 | "revert" or "pick", the second %s a SHA1. */ | |
043a4492 | 1005 | return error(_("%s: cannot parse parent commit %s"), |
004fefa7 JS |
1006 | command_to_string(command), |
1007 | oid_to_hex(&parent->object.oid)); | |
043a4492 | 1008 | |
043a4492 RR |
1009 | /* |
1010 | * "commit" is an existing commit. We would want to apply | |
1011 | * the difference it introduces since its first parent "prev" | |
1012 | * on top of the current HEAD if we are cherry-pick. Or the | |
1013 | * reverse of it if we are revert. | |
1014 | */ | |
1015 | ||
004fefa7 | 1016 | if (command == TODO_REVERT) { |
043a4492 RR |
1017 | base = commit; |
1018 | base_label = msg.label; | |
1019 | next = parent; | |
1020 | next_label = msg.parent_label; | |
1021 | strbuf_addstr(&msgbuf, "Revert \""); | |
1022 | strbuf_addstr(&msgbuf, msg.subject); | |
1023 | strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit "); | |
f2fd0760 | 1024 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
1025 | |
1026 | if (commit->parents && commit->parents->next) { | |
1027 | strbuf_addstr(&msgbuf, ", reversing\nchanges made to "); | |
f2fd0760 | 1028 | strbuf_addstr(&msgbuf, oid_to_hex(&parent->object.oid)); |
043a4492 RR |
1029 | } |
1030 | strbuf_addstr(&msgbuf, ".\n"); | |
1031 | } else { | |
1032 | const char *p; | |
1033 | ||
1034 | base = parent; | |
1035 | base_label = msg.parent_label; | |
1036 | next = commit; | |
1037 | next_label = msg.label; | |
1038 | ||
23aa5142 JS |
1039 | /* Append the commit log message to msgbuf. */ |
1040 | if (find_commit_subject(msg.message, &p)) | |
1041 | strbuf_addstr(&msgbuf, p); | |
043a4492 RR |
1042 | |
1043 | if (opts->record_origin) { | |
bab4d109 | 1044 | if (!has_conforming_footer(&msgbuf, NULL, 0)) |
b971e04f | 1045 | strbuf_addch(&msgbuf, '\n'); |
cd650a4e | 1046 | strbuf_addstr(&msgbuf, cherry_picked_prefix); |
f2fd0760 | 1047 | strbuf_addstr(&msgbuf, oid_to_hex(&commit->object.oid)); |
043a4492 RR |
1048 | strbuf_addstr(&msgbuf, ")\n"); |
1049 | } | |
1050 | } | |
1051 | ||
04efc8b5 | 1052 | if (command == TODO_REWORD) |
789b3eff | 1053 | flags |= EDIT_MSG; |
04efc8b5 | 1054 | else if (is_fixup(command)) { |
6e98de72 JS |
1055 | if (update_squash_messages(command, commit, opts)) |
1056 | return -1; | |
789b3eff | 1057 | flags |= AMEND_MSG; |
6e98de72 JS |
1058 | if (!final_fixup) |
1059 | msg_file = rebase_path_squash_msg(); | |
1060 | else if (file_exists(rebase_path_fixup_msg())) { | |
789b3eff | 1061 | flags |= CLEANUP_MSG; |
6e98de72 JS |
1062 | msg_file = rebase_path_fixup_msg(); |
1063 | } else { | |
1064 | const char *dest = git_path("SQUASH_MSG"); | |
1065 | unlink(dest); | |
1066 | if (copy_file(dest, rebase_path_squash_msg(), 0666)) | |
1067 | return error(_("could not rename '%s' to '%s'"), | |
1068 | rebase_path_squash_msg(), dest); | |
1069 | unlink(git_path("MERGE_MSG")); | |
1070 | msg_file = dest; | |
789b3eff | 1071 | flags |= EDIT_MSG; |
6e98de72 JS |
1072 | } |
1073 | } | |
1074 | ||
0473f28a JS |
1075 | if (is_rebase_i(opts) && write_author_script(msg.message) < 0) |
1076 | res = -1; | |
1077 | else if (!opts->strategy || !strcmp(opts->strategy, "recursive") || command == TODO_REVERT) { | |
043a4492 RR |
1078 | res = do_recursive_merge(base, next, base_label, next_label, |
1079 | head, &msgbuf, opts); | |
f241ff0d JS |
1080 | if (res < 0) |
1081 | return res; | |
75871495 | 1082 | res |= write_message(msgbuf.buf, msgbuf.len, |
f56fffef | 1083 | git_path_merge_msg(), 0); |
043a4492 RR |
1084 | } else { |
1085 | struct commit_list *common = NULL; | |
1086 | struct commit_list *remotes = NULL; | |
1087 | ||
75871495 | 1088 | res = write_message(msgbuf.buf, msgbuf.len, |
f56fffef | 1089 | git_path_merge_msg(), 0); |
043a4492 RR |
1090 | |
1091 | commit_list_insert(base, &common); | |
1092 | commit_list_insert(next, &remotes); | |
03a4e260 JS |
1093 | res |= try_merge_command(opts->strategy, |
1094 | opts->xopts_nr, (const char **)opts->xopts, | |
043a4492 RR |
1095 | common, sha1_to_hex(head), remotes); |
1096 | free_commit_list(common); | |
1097 | free_commit_list(remotes); | |
1098 | } | |
452202c7 | 1099 | strbuf_release(&msgbuf); |
043a4492 RR |
1100 | |
1101 | /* | |
1102 | * If the merge was clean or if it failed due to conflict, we write | |
1103 | * CHERRY_PICK_HEAD for the subsequent invocation of commit to use. | |
1104 | * However, if the merge did not even start, then we don't want to | |
1105 | * write it at all. | |
1106 | */ | |
004fefa7 | 1107 | if (command == TODO_PICK && !opts->no_commit && (res == 0 || res == 1) && |
dbfad033 JS |
1108 | update_ref(NULL, "CHERRY_PICK_HEAD", commit->object.oid.hash, NULL, |
1109 | REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) | |
1110 | res = -1; | |
004fefa7 | 1111 | if (command == TODO_REVERT && ((opts->no_commit && res == 0) || res == 1) && |
dbfad033 JS |
1112 | update_ref(NULL, "REVERT_HEAD", commit->object.oid.hash, NULL, |
1113 | REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) | |
1114 | res = -1; | |
043a4492 RR |
1115 | |
1116 | if (res) { | |
004fefa7 | 1117 | error(command == TODO_REVERT |
043a4492 RR |
1118 | ? _("could not revert %s... %s") |
1119 | : _("could not apply %s... %s"), | |
39755964 | 1120 | short_commit_name(commit), msg.subject); |
ed727b19 | 1121 | print_advice(res == 1, opts); |
043a4492 | 1122 | rerere(opts->allow_rerere_auto); |
c8d1351d | 1123 | goto leave; |
043a4492 RR |
1124 | } |
1125 | ||
c8d1351d | 1126 | allow = allow_empty(opts, commit); |
706728a3 FC |
1127 | if (allow < 0) { |
1128 | res = allow; | |
1129 | goto leave; | |
789b3eff JS |
1130 | } else if (allow) |
1131 | flags |= ALLOW_EMPTY; | |
c8d1351d | 1132 | if (!opts->no_commit) |
bcbb68be | 1133 | fast_forward_edit: |
789b3eff | 1134 | res = run_git_commit(msg_file, opts, flags); |
6e98de72 JS |
1135 | |
1136 | if (!res && final_fixup) { | |
1137 | unlink(rebase_path_fixup_msg()); | |
1138 | unlink(rebase_path_squash_msg()); | |
1139 | } | |
c8d1351d FC |
1140 | |
1141 | leave: | |
d74a4e57 | 1142 | free_message(commit, &msg); |
1e41229d | 1143 | update_abort_safety_file(); |
043a4492 RR |
1144 | |
1145 | return res; | |
1146 | } | |
1147 | ||
c3e8618c | 1148 | static int prepare_revs(struct replay_opts *opts) |
043a4492 | 1149 | { |
a73e22e9 MZ |
1150 | /* |
1151 | * picking (but not reverting) ranges (but not individual revisions) | |
1152 | * should be done in reverse | |
1153 | */ | |
1154 | if (opts->action == REPLAY_PICK && !opts->revs->no_walk) | |
043a4492 RR |
1155 | opts->revs->reverse ^= 1; |
1156 | ||
1157 | if (prepare_revision_walk(opts->revs)) | |
c3e8618c | 1158 | return error(_("revision walk setup failed")); |
043a4492 RR |
1159 | |
1160 | if (!opts->revs->commits) | |
c3e8618c JS |
1161 | return error(_("empty commit set passed")); |
1162 | return 0; | |
043a4492 RR |
1163 | } |
1164 | ||
0d9c6dc9 | 1165 | static int read_and_refresh_cache(struct replay_opts *opts) |
043a4492 RR |
1166 | { |
1167 | static struct lock_file index_lock; | |
1168 | int index_fd = hold_locked_index(&index_lock, 0); | |
49fb937e JS |
1169 | if (read_index_preload(&the_index, NULL) < 0) { |
1170 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 1171 | return error(_("git %s: failed to read the index"), |
c28cbc5e | 1172 | _(action_name(opts))); |
49fb937e | 1173 | } |
043a4492 | 1174 | refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, NULL, NULL, NULL); |
33c297aa | 1175 | if (the_index.cache_changed && index_fd >= 0) { |
49fb937e JS |
1176 | if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK)) { |
1177 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 1178 | return error(_("git %s: failed to refresh the index"), |
c28cbc5e | 1179 | _(action_name(opts))); |
49fb937e | 1180 | } |
043a4492 RR |
1181 | } |
1182 | rollback_lock_file(&index_lock); | |
0d9c6dc9 | 1183 | return 0; |
043a4492 RR |
1184 | } |
1185 | ||
004fefa7 JS |
1186 | struct todo_item { |
1187 | enum todo_command command; | |
1188 | struct commit *commit; | |
c22f7dfb JS |
1189 | const char *arg; |
1190 | int arg_len; | |
004fefa7 JS |
1191 | size_t offset_in_buf; |
1192 | }; | |
1193 | ||
1194 | struct todo_list { | |
1195 | struct strbuf buf; | |
1196 | struct todo_item *items; | |
1197 | int nr, alloc, current; | |
968492e4 | 1198 | int done_nr, total_nr; |
004fefa7 JS |
1199 | }; |
1200 | ||
1201 | #define TODO_LIST_INIT { STRBUF_INIT } | |
1202 | ||
1203 | static void todo_list_release(struct todo_list *todo_list) | |
043a4492 | 1204 | { |
004fefa7 JS |
1205 | strbuf_release(&todo_list->buf); |
1206 | free(todo_list->items); | |
1207 | todo_list->items = NULL; | |
1208 | todo_list->nr = todo_list->alloc = 0; | |
1209 | } | |
043a4492 | 1210 | |
004fefa7 JS |
1211 | static struct todo_item *append_new_todo(struct todo_list *todo_list) |
1212 | { | |
1213 | ALLOC_GROW(todo_list->items, todo_list->nr + 1, todo_list->alloc); | |
1214 | return todo_list->items + todo_list->nr++; | |
043a4492 RR |
1215 | } |
1216 | ||
004fefa7 | 1217 | static int parse_insn_line(struct todo_item *item, const char *bol, char *eol) |
043a4492 RR |
1218 | { |
1219 | unsigned char commit_sha1[20]; | |
043a4492 | 1220 | char *end_of_object_name; |
004fefa7 JS |
1221 | int i, saved, status, padding; |
1222 | ||
8f8550b3 JS |
1223 | /* left-trim */ |
1224 | bol += strspn(bol, " \t"); | |
1225 | ||
25c43667 | 1226 | if (bol == eol || *bol == '\r' || *bol == comment_line_char) { |
ac191470 | 1227 | item->command = TODO_COMMENT; |
25c43667 JS |
1228 | item->commit = NULL; |
1229 | item->arg = bol; | |
1230 | item->arg_len = eol - bol; | |
1231 | return 0; | |
1232 | } | |
1233 | ||
ac191470 | 1234 | for (i = 0; i < TODO_COMMENT; i++) |
414697a9 JS |
1235 | if (skip_prefix(bol, todo_command_info[i].str, &bol)) { |
1236 | item->command = i; | |
1237 | break; | |
1238 | } else if (bol[1] == ' ' && *bol == todo_command_info[i].c) { | |
1239 | bol++; | |
004fefa7 JS |
1240 | item->command = i; |
1241 | break; | |
1242 | } | |
ac191470 | 1243 | if (i >= TODO_COMMENT) |
004fefa7 | 1244 | return -1; |
043a4492 | 1245 | |
25c43667 JS |
1246 | if (item->command == TODO_NOOP) { |
1247 | item->commit = NULL; | |
1248 | item->arg = bol; | |
1249 | item->arg_len = eol - bol; | |
1250 | return 0; | |
1251 | } | |
1252 | ||
043a4492 RR |
1253 | /* Eat up extra spaces/ tabs before object name */ |
1254 | padding = strspn(bol, " \t"); | |
1255 | if (!padding) | |
004fefa7 | 1256 | return -1; |
043a4492 RR |
1257 | bol += padding; |
1258 | ||
311af526 JS |
1259 | if (item->command == TODO_EXEC) { |
1260 | item->arg = bol; | |
1261 | item->arg_len = (int)(eol - bol); | |
1262 | return 0; | |
1263 | } | |
1264 | ||
004fefa7 | 1265 | end_of_object_name = (char *) bol + strcspn(bol, " \t\n"); |
043a4492 RR |
1266 | saved = *end_of_object_name; |
1267 | *end_of_object_name = '\0'; | |
1268 | status = get_sha1(bol, commit_sha1); | |
1269 | *end_of_object_name = saved; | |
1270 | ||
c22f7dfb JS |
1271 | item->arg = end_of_object_name + strspn(end_of_object_name, " \t"); |
1272 | item->arg_len = (int)(eol - item->arg); | |
1273 | ||
043a4492 | 1274 | if (status < 0) |
004fefa7 | 1275 | return -1; |
043a4492 | 1276 | |
004fefa7 JS |
1277 | item->commit = lookup_commit_reference(commit_sha1); |
1278 | return !item->commit; | |
043a4492 RR |
1279 | } |
1280 | ||
004fefa7 | 1281 | static int parse_insn_buffer(char *buf, struct todo_list *todo_list) |
043a4492 | 1282 | { |
004fefa7 JS |
1283 | struct todo_item *item; |
1284 | char *p = buf, *next_p; | |
6e98de72 | 1285 | int i, res = 0, fixup_okay = file_exists(rebase_path_done()); |
043a4492 | 1286 | |
004fefa7 | 1287 | for (i = 1; *p; i++, p = next_p) { |
043a4492 | 1288 | char *eol = strchrnul(p, '\n'); |
004fefa7 JS |
1289 | |
1290 | next_p = *eol ? eol + 1 /* skip LF */ : eol; | |
1291 | ||
6307041d JS |
1292 | if (p != eol && eol[-1] == '\r') |
1293 | eol--; /* strip Carriage Return */ | |
1294 | ||
004fefa7 JS |
1295 | item = append_new_todo(todo_list); |
1296 | item->offset_in_buf = p - todo_list->buf.buf; | |
1297 | if (parse_insn_line(item, p, eol)) { | |
93b3df6f | 1298 | res = error(_("invalid line %d: %.*s"), |
004fefa7 | 1299 | i, (int)(eol - p), p); |
6e98de72 | 1300 | item->command = TODO_NOOP; |
004fefa7 | 1301 | } |
6e98de72 JS |
1302 | |
1303 | if (fixup_okay) | |
1304 | ; /* do nothing */ | |
1305 | else if (is_fixup(item->command)) | |
1306 | return error(_("cannot '%s' without a previous commit"), | |
1307 | command_to_string(item->command)); | |
1308 | else if (!is_noop(item->command)) | |
1309 | fixup_okay = 1; | |
043a4492 | 1310 | } |
52865279 | 1311 | |
004fefa7 | 1312 | return res; |
043a4492 RR |
1313 | } |
1314 | ||
968492e4 JS |
1315 | static int count_commands(struct todo_list *todo_list) |
1316 | { | |
1317 | int count = 0, i; | |
1318 | ||
1319 | for (i = 0; i < todo_list->nr; i++) | |
1320 | if (todo_list->items[i].command != TODO_COMMENT) | |
1321 | count++; | |
1322 | ||
1323 | return count; | |
1324 | } | |
1325 | ||
004fefa7 | 1326 | static int read_populate_todo(struct todo_list *todo_list, |
043a4492 RR |
1327 | struct replay_opts *opts) |
1328 | { | |
c0246501 | 1329 | const char *todo_file = get_todo_path(opts); |
043a4492 RR |
1330 | int fd, res; |
1331 | ||
004fefa7 | 1332 | strbuf_reset(&todo_list->buf); |
c0246501 | 1333 | fd = open(todo_file, O_RDONLY); |
043a4492 | 1334 | if (fd < 0) |
93b3df6f | 1335 | return error_errno(_("could not open '%s'"), todo_file); |
004fefa7 | 1336 | if (strbuf_read(&todo_list->buf, fd, 0) < 0) { |
043a4492 | 1337 | close(fd); |
93b3df6f | 1338 | return error(_("could not read '%s'."), todo_file); |
043a4492 RR |
1339 | } |
1340 | close(fd); | |
1341 | ||
004fefa7 | 1342 | res = parse_insn_buffer(todo_list->buf.buf, todo_list); |
27fdbb96 JS |
1343 | if (res) { |
1344 | if (is_rebase_i(opts)) | |
1345 | return error(_("please fix this using " | |
1346 | "'git rebase --edit-todo'.")); | |
93b3df6f | 1347 | return error(_("unusable instruction sheet: '%s'"), todo_file); |
27fdbb96 | 1348 | } |
2eeaf1b3 | 1349 | |
52865279 JS |
1350 | if (!todo_list->nr && |
1351 | (!is_rebase_i(opts) || !file_exists(rebase_path_done()))) | |
1352 | return error(_("no commits parsed.")); | |
1353 | ||
2eeaf1b3 | 1354 | if (!is_rebase_i(opts)) { |
004fefa7 JS |
1355 | enum todo_command valid = |
1356 | opts->action == REPLAY_PICK ? TODO_PICK : TODO_REVERT; | |
1357 | int i; | |
1358 | ||
1359 | for (i = 0; i < todo_list->nr; i++) | |
1360 | if (valid == todo_list->items[i].command) | |
1361 | continue; | |
1362 | else if (valid == TODO_PICK) | |
93b3df6f | 1363 | return error(_("cannot cherry-pick during a revert.")); |
004fefa7 | 1364 | else |
93b3df6f | 1365 | return error(_("cannot revert during a cherry-pick.")); |
004fefa7 JS |
1366 | } |
1367 | ||
968492e4 JS |
1368 | if (is_rebase_i(opts)) { |
1369 | struct todo_list done = TODO_LIST_INIT; | |
ef80069a | 1370 | FILE *f = fopen(rebase_path_msgtotal(), "w"); |
968492e4 JS |
1371 | |
1372 | if (strbuf_read_file(&done.buf, rebase_path_done(), 0) > 0 && | |
1373 | !parse_insn_buffer(done.buf.buf, &done)) | |
1374 | todo_list->done_nr = count_commands(&done); | |
1375 | else | |
1376 | todo_list->done_nr = 0; | |
1377 | ||
1378 | todo_list->total_nr = todo_list->done_nr | |
1379 | + count_commands(todo_list); | |
968492e4 | 1380 | todo_list_release(&done); |
ef80069a JS |
1381 | |
1382 | if (f) { | |
1383 | fprintf(f, "%d\n", todo_list->total_nr); | |
1384 | fclose(f); | |
1385 | } | |
968492e4 JS |
1386 | } |
1387 | ||
0ae42a03 | 1388 | return 0; |
043a4492 RR |
1389 | } |
1390 | ||
03a4e260 JS |
1391 | static int git_config_string_dup(char **dest, |
1392 | const char *var, const char *value) | |
1393 | { | |
1394 | if (!value) | |
1395 | return config_error_nonbool(var); | |
1396 | free(*dest); | |
1397 | *dest = xstrdup(value); | |
1398 | return 0; | |
1399 | } | |
1400 | ||
043a4492 RR |
1401 | static int populate_opts_cb(const char *key, const char *value, void *data) |
1402 | { | |
1403 | struct replay_opts *opts = data; | |
1404 | int error_flag = 1; | |
1405 | ||
1406 | if (!value) | |
1407 | error_flag = 0; | |
1408 | else if (!strcmp(key, "options.no-commit")) | |
1409 | opts->no_commit = git_config_bool_or_int(key, value, &error_flag); | |
1410 | else if (!strcmp(key, "options.edit")) | |
1411 | opts->edit = git_config_bool_or_int(key, value, &error_flag); | |
1412 | else if (!strcmp(key, "options.signoff")) | |
1413 | opts->signoff = git_config_bool_or_int(key, value, &error_flag); | |
1414 | else if (!strcmp(key, "options.record-origin")) | |
1415 | opts->record_origin = git_config_bool_or_int(key, value, &error_flag); | |
1416 | else if (!strcmp(key, "options.allow-ff")) | |
1417 | opts->allow_ff = git_config_bool_or_int(key, value, &error_flag); | |
1418 | else if (!strcmp(key, "options.mainline")) | |
1419 | opts->mainline = git_config_int(key, value); | |
1420 | else if (!strcmp(key, "options.strategy")) | |
03a4e260 | 1421 | git_config_string_dup(&opts->strategy, key, value); |
3253553e | 1422 | else if (!strcmp(key, "options.gpg-sign")) |
03a4e260 | 1423 | git_config_string_dup(&opts->gpg_sign, key, value); |
043a4492 RR |
1424 | else if (!strcmp(key, "options.strategy-option")) { |
1425 | ALLOC_GROW(opts->xopts, opts->xopts_nr + 1, opts->xopts_alloc); | |
1426 | opts->xopts[opts->xopts_nr++] = xstrdup(value); | |
1427 | } else | |
93b3df6f | 1428 | return error(_("invalid key: %s"), key); |
043a4492 RR |
1429 | |
1430 | if (!error_flag) | |
93b3df6f | 1431 | return error(_("invalid value for %s: %s"), key, value); |
043a4492 RR |
1432 | |
1433 | return 0; | |
1434 | } | |
1435 | ||
ca6c6b45 JS |
1436 | static void read_strategy_opts(struct replay_opts *opts, struct strbuf *buf) |
1437 | { | |
1438 | int i; | |
1439 | ||
1440 | strbuf_reset(buf); | |
1441 | if (!read_oneliner(buf, rebase_path_strategy(), 0)) | |
1442 | return; | |
1443 | opts->strategy = strbuf_detach(buf, NULL); | |
1444 | if (!read_oneliner(buf, rebase_path_strategy_opts(), 0)) | |
1445 | return; | |
1446 | ||
1447 | opts->xopts_nr = split_cmdline(buf->buf, (const char ***)&opts->xopts); | |
1448 | for (i = 0; i < opts->xopts_nr; i++) { | |
1449 | const char *arg = opts->xopts[i]; | |
1450 | ||
1451 | skip_prefix(arg, "--", &arg); | |
1452 | opts->xopts[i] = xstrdup(arg); | |
1453 | } | |
1454 | } | |
1455 | ||
5adf9bdc | 1456 | static int read_populate_opts(struct replay_opts *opts) |
043a4492 | 1457 | { |
a1c75762 JS |
1458 | if (is_rebase_i(opts)) { |
1459 | struct strbuf buf = STRBUF_INIT; | |
1460 | ||
1461 | if (read_oneliner(&buf, rebase_path_gpg_sign_opt(), 1)) { | |
1462 | if (!starts_with(buf.buf, "-S")) | |
1463 | strbuf_reset(&buf); | |
1464 | else { | |
1465 | free(opts->gpg_sign); | |
1466 | opts->gpg_sign = xstrdup(buf.buf + 2); | |
1467 | } | |
1468 | } | |
a1c75762 | 1469 | |
556907f1 JS |
1470 | if (file_exists(rebase_path_verbose())) |
1471 | opts->verbose = 1; | |
1472 | ||
ca6c6b45 JS |
1473 | read_strategy_opts(opts, &buf); |
1474 | strbuf_release(&buf); | |
1475 | ||
b5a67045 | 1476 | return 0; |
a1c75762 | 1477 | } |
b5a67045 | 1478 | |
f932729c | 1479 | if (!file_exists(git_path_opts_file())) |
0d00da7b JS |
1480 | return 0; |
1481 | /* | |
1482 | * The function git_parse_source(), called from git_config_from_file(), | |
1483 | * may die() in case of a syntactically incorrect file. We do not care | |
1484 | * about this case, though, because we wrote that file ourselves, so we | |
1485 | * are pretty certain that it is syntactically correct. | |
1486 | */ | |
5adf9bdc | 1487 | if (git_config_from_file(populate_opts_cb, git_path_opts_file(), opts) < 0) |
93b3df6f | 1488 | return error(_("malformed options sheet: '%s'"), |
0d00da7b JS |
1489 | git_path_opts_file()); |
1490 | return 0; | |
043a4492 RR |
1491 | } |
1492 | ||
004fefa7 | 1493 | static int walk_revs_populate_todo(struct todo_list *todo_list, |
043a4492 RR |
1494 | struct replay_opts *opts) |
1495 | { | |
004fefa7 JS |
1496 | enum todo_command command = opts->action == REPLAY_PICK ? |
1497 | TODO_PICK : TODO_REVERT; | |
414697a9 | 1498 | const char *command_string = todo_command_info[command].str; |
043a4492 | 1499 | struct commit *commit; |
043a4492 | 1500 | |
34b0528b JS |
1501 | if (prepare_revs(opts)) |
1502 | return -1; | |
043a4492 | 1503 | |
004fefa7 JS |
1504 | while ((commit = get_revision(opts->revs))) { |
1505 | struct todo_item *item = append_new_todo(todo_list); | |
1506 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
1507 | const char *subject; | |
1508 | int subject_len; | |
1509 | ||
1510 | item->command = command; | |
1511 | item->commit = commit; | |
c22f7dfb JS |
1512 | item->arg = NULL; |
1513 | item->arg_len = 0; | |
004fefa7 JS |
1514 | item->offset_in_buf = todo_list->buf.len; |
1515 | subject_len = find_commit_subject(commit_buffer, &subject); | |
1516 | strbuf_addf(&todo_list->buf, "%s %s %.*s\n", command_string, | |
1517 | short_commit_name(commit), subject_len, subject); | |
1518 | unuse_commit_buffer(commit, commit_buffer); | |
1519 | } | |
34b0528b | 1520 | return 0; |
043a4492 RR |
1521 | } |
1522 | ||
1523 | static int create_seq_dir(void) | |
1524 | { | |
f932729c | 1525 | if (file_exists(git_path_seq_dir())) { |
043a4492 RR |
1526 | error(_("a cherry-pick or revert is already in progress")); |
1527 | advise(_("try \"git cherry-pick (--continue | --quit | --abort)\"")); | |
1528 | return -1; | |
a70d8f80 | 1529 | } else if (mkdir(git_path_seq_dir(), 0777) < 0) |
93b3df6f | 1530 | return error_errno(_("could not create sequencer directory '%s'"), |
f6e82b0d | 1531 | git_path_seq_dir()); |
043a4492 RR |
1532 | return 0; |
1533 | } | |
1534 | ||
311fd397 | 1535 | static int save_head(const char *head) |
043a4492 | 1536 | { |
043a4492 RR |
1537 | static struct lock_file head_lock; |
1538 | struct strbuf buf = STRBUF_INIT; | |
1539 | int fd; | |
1540 | ||
311fd397 JS |
1541 | fd = hold_lock_file_for_update(&head_lock, git_path_head_file(), 0); |
1542 | if (fd < 0) { | |
1543 | rollback_lock_file(&head_lock); | |
93b3df6f | 1544 | return error_errno(_("could not lock HEAD")); |
311fd397 | 1545 | } |
043a4492 | 1546 | strbuf_addf(&buf, "%s\n", head); |
311fd397 JS |
1547 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
1548 | rollback_lock_file(&head_lock); | |
93b3df6f | 1549 | return error_errno(_("could not write to '%s'"), |
311fd397 JS |
1550 | git_path_head_file()); |
1551 | } | |
1552 | if (commit_lock_file(&head_lock) < 0) { | |
1553 | rollback_lock_file(&head_lock); | |
93b3df6f | 1554 | return error(_("failed to finalize '%s'."), git_path_head_file()); |
311fd397 JS |
1555 | } |
1556 | return 0; | |
043a4492 RR |
1557 | } |
1558 | ||
1e41229d SB |
1559 | static int rollback_is_safe(void) |
1560 | { | |
1561 | struct strbuf sb = STRBUF_INIT; | |
1562 | struct object_id expected_head, actual_head; | |
1563 | ||
1564 | if (strbuf_read_file(&sb, git_path_abort_safety_file(), 0) >= 0) { | |
1565 | strbuf_trim(&sb); | |
1566 | if (get_oid_hex(sb.buf, &expected_head)) { | |
1567 | strbuf_release(&sb); | |
1568 | die(_("could not parse %s"), git_path_abort_safety_file()); | |
1569 | } | |
1570 | strbuf_release(&sb); | |
1571 | } | |
1572 | else if (errno == ENOENT) | |
1573 | oidclr(&expected_head); | |
1574 | else | |
1575 | die_errno(_("could not read '%s'"), git_path_abort_safety_file()); | |
1576 | ||
1577 | if (get_oid("HEAD", &actual_head)) | |
1578 | oidclr(&actual_head); | |
1579 | ||
1580 | return !oidcmp(&actual_head, &expected_head); | |
1581 | } | |
1582 | ||
043a4492 RR |
1583 | static int reset_for_rollback(const unsigned char *sha1) |
1584 | { | |
1585 | const char *argv[4]; /* reset --merge <arg> + NULL */ | |
1e41229d | 1586 | |
043a4492 RR |
1587 | argv[0] = "reset"; |
1588 | argv[1] = "--merge"; | |
1589 | argv[2] = sha1_to_hex(sha1); | |
1590 | argv[3] = NULL; | |
1591 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
1592 | } | |
1593 | ||
1594 | static int rollback_single_pick(void) | |
1595 | { | |
1596 | unsigned char head_sha1[20]; | |
1597 | ||
f932729c JK |
1598 | if (!file_exists(git_path_cherry_pick_head()) && |
1599 | !file_exists(git_path_revert_head())) | |
043a4492 | 1600 | return error(_("no cherry-pick or revert in progress")); |
7695d118 | 1601 | if (read_ref_full("HEAD", 0, head_sha1, NULL)) |
043a4492 RR |
1602 | return error(_("cannot resolve HEAD")); |
1603 | if (is_null_sha1(head_sha1)) | |
1604 | return error(_("cannot abort from a branch yet to be born")); | |
1605 | return reset_for_rollback(head_sha1); | |
1606 | } | |
1607 | ||
2863584f | 1608 | int sequencer_rollback(struct replay_opts *opts) |
043a4492 | 1609 | { |
043a4492 RR |
1610 | FILE *f; |
1611 | unsigned char sha1[20]; | |
1612 | struct strbuf buf = STRBUF_INIT; | |
1613 | ||
f932729c | 1614 | f = fopen(git_path_head_file(), "r"); |
043a4492 RR |
1615 | if (!f && errno == ENOENT) { |
1616 | /* | |
1617 | * There is no multiple-cherry-pick in progress. | |
1618 | * If CHERRY_PICK_HEAD or REVERT_HEAD indicates | |
1619 | * a single-cherry-pick in progress, abort that. | |
1620 | */ | |
1621 | return rollback_single_pick(); | |
1622 | } | |
1623 | if (!f) | |
f7ed1953 | 1624 | return error_errno(_("cannot open '%s'"), git_path_head_file()); |
8f309aeb | 1625 | if (strbuf_getline_lf(&buf, f)) { |
f7ed1953 | 1626 | error(_("cannot read '%s': %s"), git_path_head_file(), |
f932729c | 1627 | ferror(f) ? strerror(errno) : _("unexpected end of file")); |
043a4492 RR |
1628 | fclose(f); |
1629 | goto fail; | |
1630 | } | |
1631 | fclose(f); | |
1632 | if (get_sha1_hex(buf.buf, sha1) || buf.buf[40] != '\0') { | |
1633 | error(_("stored pre-cherry-pick HEAD file '%s' is corrupt"), | |
f932729c | 1634 | git_path_head_file()); |
043a4492 RR |
1635 | goto fail; |
1636 | } | |
0f974e21 MG |
1637 | if (is_null_sha1(sha1)) { |
1638 | error(_("cannot abort from a branch yet to be born")); | |
1639 | goto fail; | |
1640 | } | |
1e41229d SB |
1641 | |
1642 | if (!rollback_is_safe()) { | |
1643 | /* Do not error, just do not rollback */ | |
1644 | warning(_("You seem to have moved HEAD. " | |
1645 | "Not rewinding, check your HEAD!")); | |
1646 | } else | |
043a4492 RR |
1647 | if (reset_for_rollback(sha1)) |
1648 | goto fail; | |
043a4492 | 1649 | strbuf_release(&buf); |
2863584f | 1650 | return sequencer_remove_state(opts); |
043a4492 RR |
1651 | fail: |
1652 | strbuf_release(&buf); | |
1653 | return -1; | |
1654 | } | |
1655 | ||
004fefa7 | 1656 | static int save_todo(struct todo_list *todo_list, struct replay_opts *opts) |
043a4492 | 1657 | { |
043a4492 | 1658 | static struct lock_file todo_lock; |
004fefa7 JS |
1659 | const char *todo_path = get_todo_path(opts); |
1660 | int next = todo_list->current, offset, fd; | |
043a4492 | 1661 | |
84583957 JS |
1662 | /* |
1663 | * rebase -i writes "git-rebase-todo" without the currently executing | |
1664 | * command, appending it to "done" instead. | |
1665 | */ | |
1666 | if (is_rebase_i(opts)) | |
1667 | next++; | |
1668 | ||
004fefa7 | 1669 | fd = hold_lock_file_for_update(&todo_lock, todo_path, 0); |
221675de | 1670 | if (fd < 0) |
93b3df6f | 1671 | return error_errno(_("could not lock '%s'"), todo_path); |
004fefa7 JS |
1672 | offset = next < todo_list->nr ? |
1673 | todo_list->items[next].offset_in_buf : todo_list->buf.len; | |
1674 | if (write_in_full(fd, todo_list->buf.buf + offset, | |
1675 | todo_list->buf.len - offset) < 0) | |
93b3df6f | 1676 | return error_errno(_("could not write to '%s'"), todo_path); |
004fefa7 | 1677 | if (commit_lock_file(&todo_lock) < 0) |
93b3df6f | 1678 | return error(_("failed to finalize '%s'."), todo_path); |
1df6df0c JS |
1679 | |
1680 | if (is_rebase_i(opts)) { | |
1681 | const char *done_path = rebase_path_done(); | |
1682 | int fd = open(done_path, O_CREAT | O_WRONLY | O_APPEND, 0666); | |
1683 | int prev_offset = !next ? 0 : | |
1684 | todo_list->items[next - 1].offset_in_buf; | |
1685 | ||
1686 | if (fd >= 0 && offset > prev_offset && | |
1687 | write_in_full(fd, todo_list->buf.buf + prev_offset, | |
1688 | offset - prev_offset) < 0) { | |
1689 | close(fd); | |
1690 | return error_errno(_("could not write to '%s'"), | |
1691 | done_path); | |
1692 | } | |
1693 | if (fd >= 0) | |
1694 | close(fd); | |
1695 | } | |
221675de | 1696 | return 0; |
043a4492 RR |
1697 | } |
1698 | ||
88d5a271 | 1699 | static int save_opts(struct replay_opts *opts) |
043a4492 | 1700 | { |
f932729c | 1701 | const char *opts_file = git_path_opts_file(); |
88d5a271 | 1702 | int res = 0; |
043a4492 RR |
1703 | |
1704 | if (opts->no_commit) | |
88d5a271 | 1705 | res |= git_config_set_in_file_gently(opts_file, "options.no-commit", "true"); |
043a4492 | 1706 | if (opts->edit) |
88d5a271 | 1707 | res |= git_config_set_in_file_gently(opts_file, "options.edit", "true"); |
043a4492 | 1708 | if (opts->signoff) |
88d5a271 | 1709 | res |= git_config_set_in_file_gently(opts_file, "options.signoff", "true"); |
043a4492 | 1710 | if (opts->record_origin) |
88d5a271 | 1711 | res |= git_config_set_in_file_gently(opts_file, "options.record-origin", "true"); |
043a4492 | 1712 | if (opts->allow_ff) |
88d5a271 | 1713 | res |= git_config_set_in_file_gently(opts_file, "options.allow-ff", "true"); |
043a4492 RR |
1714 | if (opts->mainline) { |
1715 | struct strbuf buf = STRBUF_INIT; | |
1716 | strbuf_addf(&buf, "%d", opts->mainline); | |
88d5a271 | 1717 | res |= git_config_set_in_file_gently(opts_file, "options.mainline", buf.buf); |
043a4492 RR |
1718 | strbuf_release(&buf); |
1719 | } | |
1720 | if (opts->strategy) | |
88d5a271 | 1721 | res |= git_config_set_in_file_gently(opts_file, "options.strategy", opts->strategy); |
3253553e | 1722 | if (opts->gpg_sign) |
88d5a271 | 1723 | res |= git_config_set_in_file_gently(opts_file, "options.gpg-sign", opts->gpg_sign); |
043a4492 RR |
1724 | if (opts->xopts) { |
1725 | int i; | |
1726 | for (i = 0; i < opts->xopts_nr; i++) | |
88d5a271 | 1727 | res |= git_config_set_multivar_in_file_gently(opts_file, |
043a4492 RR |
1728 | "options.strategy-option", |
1729 | opts->xopts[i], "^$", 0); | |
1730 | } | |
88d5a271 | 1731 | return res; |
043a4492 RR |
1732 | } |
1733 | ||
56dc3ab0 JS |
1734 | static int make_patch(struct commit *commit, struct replay_opts *opts) |
1735 | { | |
1736 | struct strbuf buf = STRBUF_INIT; | |
1737 | struct rev_info log_tree_opt; | |
1738 | const char *subject, *p; | |
1739 | int res = 0; | |
1740 | ||
1741 | p = short_commit_name(commit); | |
1742 | if (write_message(p, strlen(p), rebase_path_stopped_sha(), 1) < 0) | |
1743 | return -1; | |
1744 | ||
1745 | strbuf_addf(&buf, "%s/patch", get_dir(opts)); | |
1746 | memset(&log_tree_opt, 0, sizeof(log_tree_opt)); | |
1747 | init_revisions(&log_tree_opt, NULL); | |
1748 | log_tree_opt.abbrev = 0; | |
1749 | log_tree_opt.diff = 1; | |
1750 | log_tree_opt.diffopt.output_format = DIFF_FORMAT_PATCH; | |
1751 | log_tree_opt.disable_stdin = 1; | |
1752 | log_tree_opt.no_commit_id = 1; | |
1753 | log_tree_opt.diffopt.file = fopen(buf.buf, "w"); | |
1754 | log_tree_opt.diffopt.use_color = GIT_COLOR_NEVER; | |
1755 | if (!log_tree_opt.diffopt.file) | |
1756 | res |= error_errno(_("could not open '%s'"), buf.buf); | |
1757 | else { | |
1758 | res |= log_tree_commit(&log_tree_opt, commit); | |
1759 | fclose(log_tree_opt.diffopt.file); | |
1760 | } | |
1761 | strbuf_reset(&buf); | |
1762 | ||
1763 | strbuf_addf(&buf, "%s/message", get_dir(opts)); | |
1764 | if (!file_exists(buf.buf)) { | |
1765 | const char *commit_buffer = get_commit_buffer(commit, NULL); | |
1766 | find_commit_subject(commit_buffer, &subject); | |
1767 | res |= write_message(subject, strlen(subject), buf.buf, 1); | |
1768 | unuse_commit_buffer(commit, commit_buffer); | |
1769 | } | |
1770 | strbuf_release(&buf); | |
1771 | ||
1772 | return res; | |
1773 | } | |
1774 | ||
1775 | static int intend_to_amend(void) | |
1776 | { | |
1777 | unsigned char head[20]; | |
1778 | char *p; | |
1779 | ||
1780 | if (get_sha1("HEAD", head)) | |
1781 | return error(_("cannot read HEAD")); | |
1782 | ||
1783 | p = sha1_to_hex(head); | |
1784 | return write_message(p, strlen(p), rebase_path_amend(), 1); | |
1785 | } | |
1786 | ||
1787 | static int error_with_patch(struct commit *commit, | |
1788 | const char *subject, int subject_len, | |
1789 | struct replay_opts *opts, int exit_code, int to_amend) | |
1790 | { | |
1791 | if (make_patch(commit, opts)) | |
1792 | return -1; | |
1793 | ||
1794 | if (to_amend) { | |
1795 | if (intend_to_amend()) | |
1796 | return -1; | |
1797 | ||
1798 | fprintf(stderr, "You can amend the commit now, with\n" | |
1799 | "\n" | |
1800 | " git commit --amend %s\n" | |
1801 | "\n" | |
1802 | "Once you are satisfied with your changes, run\n" | |
1803 | "\n" | |
1804 | " git rebase --continue\n", gpg_sign_opt_quoted(opts)); | |
1805 | } else if (exit_code) | |
1806 | fprintf(stderr, "Could not apply %s... %.*s\n", | |
1807 | short_commit_name(commit), subject_len, subject); | |
1808 | ||
1809 | return exit_code; | |
1810 | } | |
1811 | ||
6e98de72 JS |
1812 | static int error_failed_squash(struct commit *commit, |
1813 | struct replay_opts *opts, int subject_len, const char *subject) | |
1814 | { | |
1815 | if (rename(rebase_path_squash_msg(), rebase_path_message())) | |
1816 | return error(_("could not rename '%s' to '%s'"), | |
1817 | rebase_path_squash_msg(), rebase_path_message()); | |
1818 | unlink(rebase_path_fixup_msg()); | |
1819 | unlink(git_path("MERGE_MSG")); | |
1820 | if (copy_file(git_path("MERGE_MSG"), rebase_path_message(), 0666)) | |
1821 | return error(_("could not copy '%s' to '%s'"), | |
1822 | rebase_path_message(), git_path("MERGE_MSG")); | |
1823 | return error_with_patch(commit, subject, subject_len, opts, 1, 0); | |
1824 | } | |
1825 | ||
311af526 JS |
1826 | static int do_exec(const char *command_line) |
1827 | { | |
1828 | const char *child_argv[] = { NULL, NULL }; | |
1829 | int dirty, status; | |
1830 | ||
1831 | fprintf(stderr, "Executing: %s\n", command_line); | |
1832 | child_argv[0] = command_line; | |
1833 | status = run_command_v_opt(child_argv, RUN_USING_SHELL); | |
1834 | ||
1835 | /* force re-reading of the cache */ | |
1836 | if (discard_cache() < 0 || read_cache() < 0) | |
1837 | return error(_("could not read index")); | |
1838 | ||
1839 | dirty = require_clean_work_tree("rebase", NULL, 1, 1); | |
1840 | ||
1841 | if (status) { | |
1842 | warning(_("execution failed: %s\n%s" | |
1843 | "You can fix the problem, and then run\n" | |
1844 | "\n" | |
1845 | " git rebase --continue\n" | |
1846 | "\n"), | |
1847 | command_line, | |
1848 | dirty ? N_("and made changes to the index and/or the " | |
1849 | "working tree\n") : ""); | |
1850 | if (status == 127) | |
1851 | /* command not found */ | |
1852 | status = 1; | |
1853 | } else if (dirty) { | |
1854 | warning(_("execution succeeded: %s\nbut " | |
1855 | "left changes to the index and/or the working tree\n" | |
1856 | "Commit or stash your changes, and then run\n" | |
1857 | "\n" | |
1858 | " git rebase --continue\n" | |
1859 | "\n"), command_line); | |
1860 | status = 1; | |
1861 | } | |
1862 | ||
1863 | return status; | |
1864 | } | |
1865 | ||
6e98de72 JS |
1866 | static int is_final_fixup(struct todo_list *todo_list) |
1867 | { | |
1868 | int i = todo_list->current; | |
1869 | ||
1870 | if (!is_fixup(todo_list->items[i].command)) | |
1871 | return 0; | |
1872 | ||
1873 | while (++i < todo_list->nr) | |
1874 | if (is_fixup(todo_list->items[i].command)) | |
1875 | return 0; | |
1876 | else if (!is_noop(todo_list->items[i].command)) | |
1877 | break; | |
1878 | return 1; | |
1879 | } | |
1880 | ||
25cb8df9 JS |
1881 | static enum todo_command peek_command(struct todo_list *todo_list, int offset) |
1882 | { | |
1883 | int i; | |
1884 | ||
1885 | for (i = todo_list->current + offset; i < todo_list->nr; i++) | |
1886 | if (!is_noop(todo_list->items[i].command)) | |
1887 | return todo_list->items[i].command; | |
1888 | ||
1889 | return -1; | |
1890 | } | |
1891 | ||
796c7972 JS |
1892 | static int apply_autostash(struct replay_opts *opts) |
1893 | { | |
1894 | struct strbuf stash_sha1 = STRBUF_INIT; | |
1895 | struct child_process child = CHILD_PROCESS_INIT; | |
1896 | int ret = 0; | |
1897 | ||
1898 | if (!read_oneliner(&stash_sha1, rebase_path_autostash(), 1)) { | |
1899 | strbuf_release(&stash_sha1); | |
1900 | return 0; | |
1901 | } | |
1902 | strbuf_trim(&stash_sha1); | |
1903 | ||
1904 | child.git_cmd = 1; | |
1905 | argv_array_push(&child.args, "stash"); | |
1906 | argv_array_push(&child.args, "apply"); | |
1907 | argv_array_push(&child.args, stash_sha1.buf); | |
1908 | if (!run_command(&child)) | |
1909 | printf(_("Applied autostash.")); | |
1910 | else { | |
1911 | struct child_process store = CHILD_PROCESS_INIT; | |
1912 | ||
1913 | store.git_cmd = 1; | |
1914 | argv_array_push(&store.args, "stash"); | |
1915 | argv_array_push(&store.args, "store"); | |
1916 | argv_array_push(&store.args, "-m"); | |
1917 | argv_array_push(&store.args, "autostash"); | |
1918 | argv_array_push(&store.args, "-q"); | |
1919 | argv_array_push(&store.args, stash_sha1.buf); | |
1920 | if (run_command(&store)) | |
1921 | ret = error(_("cannot store %s"), stash_sha1.buf); | |
1922 | else | |
1923 | printf(_("Applying autostash resulted in conflicts.\n" | |
1924 | "Your changes are safe in the stash.\n" | |
1925 | "You can run \"git stash pop\" or" | |
1926 | " \"git stash drop\" at any time.\n")); | |
1927 | } | |
1928 | ||
1929 | strbuf_release(&stash_sha1); | |
1930 | return ret; | |
1931 | } | |
1932 | ||
96e832a5 JS |
1933 | static const char *reflog_message(struct replay_opts *opts, |
1934 | const char *sub_action, const char *fmt, ...) | |
1935 | { | |
1936 | va_list ap; | |
1937 | static struct strbuf buf = STRBUF_INIT; | |
1938 | ||
1939 | va_start(ap, fmt); | |
1940 | strbuf_reset(&buf); | |
1941 | strbuf_addstr(&buf, action_name(opts)); | |
1942 | if (sub_action) | |
1943 | strbuf_addf(&buf, " (%s)", sub_action); | |
1944 | if (fmt) { | |
1945 | strbuf_addstr(&buf, ": "); | |
1946 | strbuf_vaddf(&buf, fmt, ap); | |
1947 | } | |
1948 | va_end(ap); | |
1949 | ||
1950 | return buf.buf; | |
1951 | } | |
1952 | ||
004fefa7 | 1953 | static int pick_commits(struct todo_list *todo_list, struct replay_opts *opts) |
043a4492 | 1954 | { |
56dc3ab0 | 1955 | int res = 0; |
043a4492 RR |
1956 | |
1957 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
1958 | if (opts->allow_ff) | |
1959 | assert(!(opts->signoff || opts->no_commit || | |
1960 | opts->record_origin || opts->edit)); | |
0d9c6dc9 JS |
1961 | if (read_and_refresh_cache(opts)) |
1962 | return -1; | |
043a4492 | 1963 | |
004fefa7 JS |
1964 | while (todo_list->current < todo_list->nr) { |
1965 | struct todo_item *item = todo_list->items + todo_list->current; | |
1966 | if (save_todo(todo_list, opts)) | |
221675de | 1967 | return -1; |
6e98de72 | 1968 | if (is_rebase_i(opts)) { |
ef80069a JS |
1969 | if (item->command != TODO_COMMENT) { |
1970 | FILE *f = fopen(rebase_path_msgnum(), "w"); | |
1971 | ||
1972 | todo_list->done_nr++; | |
1973 | ||
1974 | if (f) { | |
1975 | fprintf(f, "%d\n", todo_list->done_nr); | |
1976 | fclose(f); | |
1977 | } | |
968492e4 | 1978 | fprintf(stderr, "Rebasing (%d/%d)%s", |
ef80069a | 1979 | todo_list->done_nr, |
968492e4 JS |
1980 | todo_list->total_nr, |
1981 | opts->verbose ? "\n" : "\r"); | |
ef80069a | 1982 | } |
6e98de72 JS |
1983 | unlink(rebase_path_message()); |
1984 | unlink(rebase_path_author_script()); | |
1985 | unlink(rebase_path_stopped_sha()); | |
1986 | unlink(rebase_path_amend()); | |
1987 | } | |
1988 | if (item->command <= TODO_SQUASH) { | |
8ab37ef2 JS |
1989 | if (is_rebase_i(opts)) |
1990 | setenv("GIT_REFLOG_ACTION", reflog_message(opts, | |
1991 | command_to_string(item->command), NULL), | |
1992 | 1); | |
25c43667 | 1993 | res = do_pick_commit(item->command, item->commit, |
6e98de72 | 1994 | opts, is_final_fixup(todo_list)); |
9d7bf3cf JS |
1995 | if (is_rebase_i(opts) && res < 0) { |
1996 | /* Reschedule */ | |
1997 | todo_list->current--; | |
1998 | if (save_todo(todo_list, opts)) | |
1999 | return -1; | |
2000 | } | |
56dc3ab0 JS |
2001 | if (item->command == TODO_EDIT) { |
2002 | struct commit *commit = item->commit; | |
2003 | if (!res) | |
99429213 JK |
2004 | fprintf(stderr, |
2005 | _("Stopped at %s... %.*s"), | |
56dc3ab0 JS |
2006 | short_commit_name(commit), |
2007 | item->arg_len, item->arg); | |
2008 | return error_with_patch(commit, | |
2009 | item->arg, item->arg_len, opts, res, | |
2010 | !res); | |
2011 | } | |
25cb8df9 JS |
2012 | if (is_rebase_i(opts) && !res) |
2013 | record_in_rewritten(&item->commit->object.oid, | |
2014 | peek_command(todo_list, 1)); | |
6e98de72 JS |
2015 | if (res && is_fixup(item->command)) { |
2016 | if (res == 1) | |
2017 | intend_to_amend(); | |
2018 | return error_failed_squash(item->commit, opts, | |
2019 | item->arg_len, item->arg); | |
4a5146f9 JS |
2020 | } else if (res && is_rebase_i(opts)) |
2021 | return res | error_with_patch(item->commit, | |
04efc8b5 JS |
2022 | item->arg, item->arg_len, opts, res, |
2023 | item->command == TODO_REWORD); | |
311af526 JS |
2024 | } else if (item->command == TODO_EXEC) { |
2025 | char *end_of_arg = (char *)(item->arg + item->arg_len); | |
2026 | int saved = *end_of_arg; | |
2027 | ||
2028 | *end_of_arg = '\0'; | |
2029 | res = do_exec(item->arg); | |
2030 | *end_of_arg = saved; | |
56dc3ab0 | 2031 | } else if (!is_noop(item->command)) |
25c43667 JS |
2032 | return error(_("unknown command %d"), item->command); |
2033 | ||
004fefa7 | 2034 | todo_list->current++; |
043a4492 RR |
2035 | if (res) |
2036 | return res; | |
2037 | } | |
2038 | ||
56dc3ab0 | 2039 | if (is_rebase_i(opts)) { |
4b83ce9f | 2040 | struct strbuf head_ref = STRBUF_INIT, buf = STRBUF_INIT; |
25cb8df9 | 2041 | struct stat st; |
556907f1 | 2042 | |
56dc3ab0 JS |
2043 | /* Stopped in the middle, as planned? */ |
2044 | if (todo_list->current < todo_list->nr) | |
2045 | return 0; | |
556907f1 | 2046 | |
4b83ce9f JS |
2047 | if (read_oneliner(&head_ref, rebase_path_head_name(), 0) && |
2048 | starts_with(head_ref.buf, "refs/")) { | |
96e832a5 | 2049 | const char *msg; |
4b83ce9f JS |
2050 | unsigned char head[20], orig[20]; |
2051 | int res; | |
2052 | ||
2053 | if (get_sha1("HEAD", head)) { | |
2054 | res = error(_("cannot read HEAD")); | |
2055 | cleanup_head_ref: | |
2056 | strbuf_release(&head_ref); | |
2057 | strbuf_release(&buf); | |
2058 | return res; | |
2059 | } | |
2060 | if (!read_oneliner(&buf, rebase_path_orig_head(), 0) || | |
2061 | get_sha1_hex(buf.buf, orig)) { | |
2062 | res = error(_("could not read orig-head")); | |
2063 | goto cleanup_head_ref; | |
2064 | } | |
4b83ce9f JS |
2065 | if (!read_oneliner(&buf, rebase_path_onto(), 0)) { |
2066 | res = error(_("could not read 'onto'")); | |
2067 | goto cleanup_head_ref; | |
2068 | } | |
96e832a5 JS |
2069 | msg = reflog_message(opts, "finish", "%s onto %s", |
2070 | head_ref.buf, buf.buf); | |
2071 | if (update_ref(msg, head_ref.buf, head, orig, | |
4b83ce9f JS |
2072 | REF_NODEREF, UPDATE_REFS_MSG_ON_ERR)) { |
2073 | res = error(_("could not update %s"), | |
2074 | head_ref.buf); | |
2075 | goto cleanup_head_ref; | |
2076 | } | |
96e832a5 | 2077 | msg = reflog_message(opts, "finish", "returning to %s", |
4b83ce9f | 2078 | head_ref.buf); |
96e832a5 | 2079 | if (create_symref("HEAD", head_ref.buf, msg)) { |
4b83ce9f JS |
2080 | res = error(_("could not update HEAD to %s"), |
2081 | head_ref.buf); | |
2082 | goto cleanup_head_ref; | |
2083 | } | |
2084 | strbuf_reset(&buf); | |
2085 | } | |
2086 | ||
556907f1 JS |
2087 | if (opts->verbose) { |
2088 | struct rev_info log_tree_opt; | |
2089 | struct object_id orig, head; | |
2090 | ||
2091 | memset(&log_tree_opt, 0, sizeof(log_tree_opt)); | |
2092 | init_revisions(&log_tree_opt, NULL); | |
2093 | log_tree_opt.diff = 1; | |
2094 | log_tree_opt.diffopt.output_format = | |
2095 | DIFF_FORMAT_DIFFSTAT; | |
2096 | log_tree_opt.disable_stdin = 1; | |
2097 | ||
2098 | if (read_oneliner(&buf, rebase_path_orig_head(), 0) && | |
2099 | !get_sha1(buf.buf, orig.hash) && | |
2100 | !get_sha1("HEAD", head.hash)) { | |
2101 | diff_tree_sha1(orig.hash, head.hash, | |
2102 | "", &log_tree_opt.diffopt); | |
2103 | log_tree_diff_flush(&log_tree_opt); | |
2104 | } | |
2105 | } | |
25cb8df9 JS |
2106 | flush_rewritten_pending(); |
2107 | if (!stat(rebase_path_rewritten_list(), &st) && | |
2108 | st.st_size > 0) { | |
2109 | struct child_process child = CHILD_PROCESS_INIT; | |
79516045 JS |
2110 | const char *post_rewrite_hook = |
2111 | find_hook("post-rewrite"); | |
25cb8df9 JS |
2112 | |
2113 | child.in = open(rebase_path_rewritten_list(), O_RDONLY); | |
2114 | child.git_cmd = 1; | |
2115 | argv_array_push(&child.args, "notes"); | |
2116 | argv_array_push(&child.args, "copy"); | |
2117 | argv_array_push(&child.args, "--for-rewrite=rebase"); | |
2118 | /* we don't care if this copying failed */ | |
2119 | run_command(&child); | |
79516045 JS |
2120 | |
2121 | if (post_rewrite_hook) { | |
2122 | struct child_process hook = CHILD_PROCESS_INIT; | |
2123 | ||
2124 | hook.in = open(rebase_path_rewritten_list(), | |
2125 | O_RDONLY); | |
2126 | hook.stdout_to_stderr = 1; | |
2127 | argv_array_push(&hook.args, post_rewrite_hook); | |
2128 | argv_array_push(&hook.args, "rebase"); | |
2129 | /* we don't care if this hook failed */ | |
2130 | run_command(&hook); | |
2131 | } | |
25cb8df9 | 2132 | } |
796c7972 | 2133 | apply_autostash(opts); |
25cb8df9 | 2134 | |
5da4966f JS |
2135 | fprintf(stderr, "Successfully rebased and updated %s.\n", |
2136 | head_ref.buf); | |
2137 | ||
556907f1 | 2138 | strbuf_release(&buf); |
4b83ce9f | 2139 | strbuf_release(&head_ref); |
56dc3ab0 JS |
2140 | } |
2141 | ||
043a4492 RR |
2142 | /* |
2143 | * Sequence of picks finished successfully; cleanup by | |
2144 | * removing the .git/sequencer directory | |
2145 | */ | |
2863584f | 2146 | return sequencer_remove_state(opts); |
043a4492 RR |
2147 | } |
2148 | ||
2149 | static int continue_single_pick(void) | |
2150 | { | |
2151 | const char *argv[] = { "commit", NULL }; | |
2152 | ||
f932729c JK |
2153 | if (!file_exists(git_path_cherry_pick_head()) && |
2154 | !file_exists(git_path_revert_head())) | |
043a4492 RR |
2155 | return error(_("no cherry-pick or revert in progress")); |
2156 | return run_command_v_opt(argv, RUN_GIT_CMD); | |
2157 | } | |
2158 | ||
9d93ccd1 JS |
2159 | static int commit_staged_changes(struct replay_opts *opts) |
2160 | { | |
789b3eff | 2161 | unsigned int flags = ALLOW_EMPTY | EDIT_MSG; |
9d93ccd1 JS |
2162 | |
2163 | if (has_unstaged_changes(1)) | |
2164 | return error(_("cannot rebase: You have unstaged changes.")); | |
52632209 JS |
2165 | if (!has_uncommitted_changes(0)) { |
2166 | const char *cherry_pick_head = git_path("CHERRY_PICK_HEAD"); | |
2167 | ||
2168 | if (file_exists(cherry_pick_head) && unlink(cherry_pick_head)) | |
2169 | return error(_("could not remove CHERRY_PICK_HEAD")); | |
9d93ccd1 | 2170 | return 0; |
52632209 | 2171 | } |
9d93ccd1 JS |
2172 | |
2173 | if (file_exists(rebase_path_amend())) { | |
2174 | struct strbuf rev = STRBUF_INIT; | |
2175 | unsigned char head[20], to_amend[20]; | |
2176 | ||
2177 | if (get_sha1("HEAD", head)) | |
2178 | return error(_("cannot amend non-existing commit")); | |
2179 | if (!read_oneliner(&rev, rebase_path_amend(), 0)) | |
2180 | return error(_("invalid file: '%s'"), rebase_path_amend()); | |
2181 | if (get_sha1_hex(rev.buf, to_amend)) | |
2182 | return error(_("invalid contents: '%s'"), | |
2183 | rebase_path_amend()); | |
2184 | if (hashcmp(head, to_amend)) | |
2185 | return error(_("\nYou have uncommitted changes in your " | |
2186 | "working tree. Please, commit them\n" | |
2187 | "first and then run 'git rebase " | |
2188 | "--continue' again.")); | |
2189 | ||
2190 | strbuf_release(&rev); | |
789b3eff | 2191 | flags |= AMEND_MSG; |
9d93ccd1 JS |
2192 | } |
2193 | ||
789b3eff | 2194 | if (run_git_commit(rebase_path_message(), opts, flags)) |
9d93ccd1 JS |
2195 | return error(_("could not commit staged changes.")); |
2196 | unlink(rebase_path_amend()); | |
2197 | return 0; | |
2198 | } | |
2199 | ||
2863584f | 2200 | int sequencer_continue(struct replay_opts *opts) |
043a4492 | 2201 | { |
004fefa7 JS |
2202 | struct todo_list todo_list = TODO_LIST_INIT; |
2203 | int res; | |
043a4492 | 2204 | |
2863584f JS |
2205 | if (read_and_refresh_cache(opts)) |
2206 | return -1; | |
2207 | ||
9d93ccd1 JS |
2208 | if (is_rebase_i(opts)) { |
2209 | if (commit_staged_changes(opts)) | |
2210 | return -1; | |
4258a6da | 2211 | } else if (!file_exists(get_todo_path(opts))) |
043a4492 | 2212 | return continue_single_pick(); |
004fefa7 | 2213 | if (read_populate_opts(opts)) |
0ae42a03 | 2214 | return -1; |
004fefa7 JS |
2215 | if ((res = read_populate_todo(&todo_list, opts))) |
2216 | goto release_todo_list; | |
043a4492 | 2217 | |
4258a6da JS |
2218 | if (!is_rebase_i(opts)) { |
2219 | /* Verify that the conflict has been resolved */ | |
2220 | if (file_exists(git_path_cherry_pick_head()) || | |
2221 | file_exists(git_path_revert_head())) { | |
2222 | res = continue_single_pick(); | |
2223 | if (res) | |
2224 | goto release_todo_list; | |
2225 | } | |
2226 | if (index_differs_from("HEAD", 0, 0)) { | |
2227 | res = error_dirty_index(opts); | |
004fefa7 | 2228 | goto release_todo_list; |
4258a6da JS |
2229 | } |
2230 | todo_list.current++; | |
ca98c6d4 JS |
2231 | } else if (file_exists(rebase_path_stopped_sha())) { |
2232 | struct strbuf buf = STRBUF_INIT; | |
2233 | struct object_id oid; | |
2234 | ||
2235 | if (read_oneliner(&buf, rebase_path_stopped_sha(), 1) && | |
2236 | !get_sha1_committish(buf.buf, oid.hash)) | |
2237 | record_in_rewritten(&oid, peek_command(&todo_list, 0)); | |
2238 | strbuf_release(&buf); | |
043a4492 | 2239 | } |
4258a6da | 2240 | |
004fefa7 JS |
2241 | res = pick_commits(&todo_list, opts); |
2242 | release_todo_list: | |
2243 | todo_list_release(&todo_list); | |
2244 | return res; | |
043a4492 RR |
2245 | } |
2246 | ||
2247 | static int single_pick(struct commit *cmit, struct replay_opts *opts) | |
2248 | { | |
2249 | setenv(GIT_REFLOG_ACTION, action_name(opts), 0); | |
004fefa7 | 2250 | return do_pick_commit(opts->action == REPLAY_PICK ? |
6e98de72 | 2251 | TODO_PICK : TODO_REVERT, cmit, opts, 0); |
043a4492 RR |
2252 | } |
2253 | ||
2254 | int sequencer_pick_revisions(struct replay_opts *opts) | |
2255 | { | |
004fefa7 | 2256 | struct todo_list todo_list = TODO_LIST_INIT; |
043a4492 | 2257 | unsigned char sha1[20]; |
004fefa7 | 2258 | int i, res; |
043a4492 | 2259 | |
2863584f | 2260 | assert(opts->revs); |
0d9c6dc9 JS |
2261 | if (read_and_refresh_cache(opts)) |
2262 | return -1; | |
043a4492 | 2263 | |
21246dbb MV |
2264 | for (i = 0; i < opts->revs->pending.nr; i++) { |
2265 | unsigned char sha1[20]; | |
2266 | const char *name = opts->revs->pending.objects[i].name; | |
2267 | ||
2268 | /* This happens when using --stdin. */ | |
2269 | if (!strlen(name)) | |
2270 | continue; | |
2271 | ||
2272 | if (!get_sha1(name, sha1)) { | |
7c0b0d8d JH |
2273 | if (!lookup_commit_reference_gently(sha1, 1)) { |
2274 | enum object_type type = sha1_object_info(sha1, NULL); | |
b9b946d4 JS |
2275 | return error(_("%s: can't cherry-pick a %s"), |
2276 | name, typename(type)); | |
7c0b0d8d | 2277 | } |
21246dbb | 2278 | } else |
b9b946d4 | 2279 | return error(_("%s: bad revision"), name); |
21246dbb MV |
2280 | } |
2281 | ||
043a4492 RR |
2282 | /* |
2283 | * If we were called as "git cherry-pick <commit>", just | |
2284 | * cherry-pick/revert it, set CHERRY_PICK_HEAD / | |
2285 | * REVERT_HEAD, and don't touch the sequencer state. | |
2286 | * This means it is possible to cherry-pick in the middle | |
2287 | * of a cherry-pick sequence. | |
2288 | */ | |
2289 | if (opts->revs->cmdline.nr == 1 && | |
2290 | opts->revs->cmdline.rev->whence == REV_CMD_REV && | |
2291 | opts->revs->no_walk && | |
2292 | !opts->revs->cmdline.rev->flags) { | |
2293 | struct commit *cmit; | |
2294 | if (prepare_revision_walk(opts->revs)) | |
b9b946d4 | 2295 | return error(_("revision walk setup failed")); |
043a4492 RR |
2296 | cmit = get_revision(opts->revs); |
2297 | if (!cmit || get_revision(opts->revs)) | |
b9b946d4 | 2298 | return error("BUG: expected exactly one commit from walk"); |
043a4492 RR |
2299 | return single_pick(cmit, opts); |
2300 | } | |
2301 | ||
2302 | /* | |
2303 | * Start a new cherry-pick/ revert sequence; but | |
2304 | * first, make sure that an existing one isn't in | |
2305 | * progress | |
2306 | */ | |
2307 | ||
34b0528b JS |
2308 | if (walk_revs_populate_todo(&todo_list, opts) || |
2309 | create_seq_dir() < 0) | |
043a4492 | 2310 | return -1; |
0f974e21 | 2311 | if (get_sha1("HEAD", sha1) && (opts->action == REPLAY_REVERT)) |
93b3df6f | 2312 | return error(_("can't revert as initial commit")); |
311fd397 JS |
2313 | if (save_head(sha1_to_hex(sha1))) |
2314 | return -1; | |
88d5a271 JS |
2315 | if (save_opts(opts)) |
2316 | return -1; | |
1e41229d | 2317 | update_abort_safety_file(); |
004fefa7 JS |
2318 | res = pick_commits(&todo_list, opts); |
2319 | todo_list_release(&todo_list); | |
2320 | return res; | |
043a4492 | 2321 | } |
5ed75e2a | 2322 | |
bab4d109 | 2323 | void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag) |
5ed75e2a | 2324 | { |
bab4d109 | 2325 | unsigned no_dup_sob = flag & APPEND_SIGNOFF_DEDUP; |
5ed75e2a | 2326 | struct strbuf sob = STRBUF_INIT; |
bab4d109 | 2327 | int has_footer; |
5ed75e2a MV |
2328 | |
2329 | strbuf_addstr(&sob, sign_off_header); | |
2330 | strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"), | |
2331 | getenv("GIT_COMMITTER_EMAIL"))); | |
2332 | strbuf_addch(&sob, '\n'); | |
bab4d109 BC |
2333 | |
2334 | /* | |
2335 | * If the whole message buffer is equal to the sob, pretend that we | |
2336 | * found a conforming footer with a matching sob | |
2337 | */ | |
2338 | if (msgbuf->len - ignore_footer == sob.len && | |
2339 | !strncmp(msgbuf->buf, sob.buf, sob.len)) | |
2340 | has_footer = 3; | |
2341 | else | |
2342 | has_footer = has_conforming_footer(msgbuf, &sob, ignore_footer); | |
2343 | ||
33f2f9ab BC |
2344 | if (!has_footer) { |
2345 | const char *append_newlines = NULL; | |
2346 | size_t len = msgbuf->len - ignore_footer; | |
2347 | ||
8c613fd5 BC |
2348 | if (!len) { |
2349 | /* | |
2350 | * The buffer is completely empty. Leave foom for | |
2351 | * the title and body to be filled in by the user. | |
2352 | */ | |
33f2f9ab | 2353 | append_newlines = "\n\n"; |
8c613fd5 BC |
2354 | } else if (msgbuf->buf[len - 1] != '\n') { |
2355 | /* | |
2356 | * Incomplete line. Complete the line and add a | |
2357 | * blank one so that there is an empty line between | |
2358 | * the message body and the sob. | |
2359 | */ | |
2360 | append_newlines = "\n\n"; | |
2361 | } else if (len == 1) { | |
2362 | /* | |
2363 | * Buffer contains a single newline. Add another | |
2364 | * so that we leave room for the title and body. | |
2365 | */ | |
2366 | append_newlines = "\n"; | |
2367 | } else if (msgbuf->buf[len - 2] != '\n') { | |
2368 | /* | |
2369 | * Buffer ends with a single newline. Add another | |
2370 | * so that there is an empty line between the message | |
2371 | * body and the sob. | |
2372 | */ | |
33f2f9ab | 2373 | append_newlines = "\n"; |
8c613fd5 | 2374 | } /* else, the buffer already ends with two newlines. */ |
33f2f9ab BC |
2375 | |
2376 | if (append_newlines) | |
2377 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
2378 | append_newlines, strlen(append_newlines)); | |
5ed75e2a | 2379 | } |
bab4d109 BC |
2380 | |
2381 | if (has_footer != 3 && (!no_dup_sob || has_footer != 2)) | |
2382 | strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0, | |
2383 | sob.buf, sob.len); | |
2384 | ||
5ed75e2a MV |
2385 | strbuf_release(&sob); |
2386 | } |