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