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Commit | Line | Data |
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1 | /* | |
2 | * Builtin "git am" | |
3 | * | |
4 | * Based on git-am.sh by Junio C Hamano. | |
5 | */ | |
6 | #define USE_THE_INDEX_COMPATIBILITY_MACROS | |
7 | #include "cache.h" | |
8 | #include "config.h" | |
9 | #include "builtin.h" | |
10 | #include "exec-cmd.h" | |
11 | #include "parse-options.h" | |
12 | #include "dir.h" | |
13 | #include "run-command.h" | |
14 | #include "quote.h" | |
15 | #include "tempfile.h" | |
16 | #include "lockfile.h" | |
17 | #include "cache-tree.h" | |
18 | #include "refs.h" | |
19 | #include "commit.h" | |
20 | #include "diff.h" | |
21 | #include "diffcore.h" | |
22 | #include "unpack-trees.h" | |
23 | #include "branch.h" | |
24 | #include "sequencer.h" | |
25 | #include "revision.h" | |
26 | #include "merge-recursive.h" | |
27 | #include "log-tree.h" | |
28 | #include "notes-utils.h" | |
29 | #include "rerere.h" | |
30 | #include "prompt.h" | |
31 | #include "mailinfo.h" | |
32 | #include "apply.h" | |
33 | #include "string-list.h" | |
34 | #include "packfile.h" | |
35 | #include "repository.h" | |
36 | ||
37 | /** | |
38 | * Returns the length of the first line of msg. | |
39 | */ | |
40 | static int linelen(const char *msg) | |
41 | { | |
42 | return strchrnul(msg, '\n') - msg; | |
43 | } | |
44 | ||
45 | /** | |
46 | * Returns true if `str` consists of only whitespace, false otherwise. | |
47 | */ | |
48 | static int str_isspace(const char *str) | |
49 | { | |
50 | for (; *str; str++) | |
51 | if (!isspace(*str)) | |
52 | return 0; | |
53 | ||
54 | return 1; | |
55 | } | |
56 | ||
57 | enum patch_format { | |
58 | PATCH_FORMAT_UNKNOWN = 0, | |
59 | PATCH_FORMAT_MBOX, | |
60 | PATCH_FORMAT_STGIT, | |
61 | PATCH_FORMAT_STGIT_SERIES, | |
62 | PATCH_FORMAT_HG, | |
63 | PATCH_FORMAT_MBOXRD | |
64 | }; | |
65 | ||
66 | enum keep_type { | |
67 | KEEP_FALSE = 0, | |
68 | KEEP_TRUE, /* pass -k flag to git-mailinfo */ | |
69 | KEEP_NON_PATCH /* pass -b flag to git-mailinfo */ | |
70 | }; | |
71 | ||
72 | enum scissors_type { | |
73 | SCISSORS_UNSET = -1, | |
74 | SCISSORS_FALSE = 0, /* pass --no-scissors to git-mailinfo */ | |
75 | SCISSORS_TRUE /* pass --scissors to git-mailinfo */ | |
76 | }; | |
77 | ||
78 | enum signoff_type { | |
79 | SIGNOFF_FALSE = 0, | |
80 | SIGNOFF_TRUE = 1, | |
81 | SIGNOFF_EXPLICIT /* --signoff was set on the command-line */ | |
82 | }; | |
83 | ||
84 | struct am_state { | |
85 | /* state directory path */ | |
86 | char *dir; | |
87 | ||
88 | /* current and last patch numbers, 1-indexed */ | |
89 | int cur; | |
90 | int last; | |
91 | ||
92 | /* commit metadata and message */ | |
93 | char *author_name; | |
94 | char *author_email; | |
95 | char *author_date; | |
96 | char *msg; | |
97 | size_t msg_len; | |
98 | ||
99 | /* when --rebasing, records the original commit the patch came from */ | |
100 | struct object_id orig_commit; | |
101 | ||
102 | /* number of digits in patch filename */ | |
103 | int prec; | |
104 | ||
105 | /* various operating modes and command line options */ | |
106 | int interactive; | |
107 | int threeway; | |
108 | int quiet; | |
109 | int signoff; /* enum signoff_type */ | |
110 | int utf8; | |
111 | int keep; /* enum keep_type */ | |
112 | int message_id; | |
113 | int scissors; /* enum scissors_type */ | |
114 | struct argv_array git_apply_opts; | |
115 | const char *resolvemsg; | |
116 | int committer_date_is_author_date; | |
117 | int ignore_date; | |
118 | int allow_rerere_autoupdate; | |
119 | const char *sign_commit; | |
120 | int rebasing; | |
121 | }; | |
122 | ||
123 | /** | |
124 | * Initializes am_state with the default values. | |
125 | */ | |
126 | static void am_state_init(struct am_state *state) | |
127 | { | |
128 | int gpgsign; | |
129 | ||
130 | memset(state, 0, sizeof(*state)); | |
131 | ||
132 | state->dir = git_pathdup("rebase-apply"); | |
133 | ||
134 | state->prec = 4; | |
135 | ||
136 | git_config_get_bool("am.threeway", &state->threeway); | |
137 | ||
138 | state->utf8 = 1; | |
139 | ||
140 | git_config_get_bool("am.messageid", &state->message_id); | |
141 | ||
142 | state->scissors = SCISSORS_UNSET; | |
143 | ||
144 | argv_array_init(&state->git_apply_opts); | |
145 | ||
146 | if (!git_config_get_bool("commit.gpgsign", &gpgsign)) | |
147 | state->sign_commit = gpgsign ? "" : NULL; | |
148 | } | |
149 | ||
150 | /** | |
151 | * Releases memory allocated by an am_state. | |
152 | */ | |
153 | static void am_state_release(struct am_state *state) | |
154 | { | |
155 | free(state->dir); | |
156 | free(state->author_name); | |
157 | free(state->author_email); | |
158 | free(state->author_date); | |
159 | free(state->msg); | |
160 | argv_array_clear(&state->git_apply_opts); | |
161 | } | |
162 | ||
163 | /** | |
164 | * Returns path relative to the am_state directory. | |
165 | */ | |
166 | static inline const char *am_path(const struct am_state *state, const char *path) | |
167 | { | |
168 | return mkpath("%s/%s", state->dir, path); | |
169 | } | |
170 | ||
171 | /** | |
172 | * For convenience to call write_file() | |
173 | */ | |
174 | static void write_state_text(const struct am_state *state, | |
175 | const char *name, const char *string) | |
176 | { | |
177 | write_file(am_path(state, name), "%s", string); | |
178 | } | |
179 | ||
180 | static void write_state_count(const struct am_state *state, | |
181 | const char *name, int value) | |
182 | { | |
183 | write_file(am_path(state, name), "%d", value); | |
184 | } | |
185 | ||
186 | static void write_state_bool(const struct am_state *state, | |
187 | const char *name, int value) | |
188 | { | |
189 | write_state_text(state, name, value ? "t" : "f"); | |
190 | } | |
191 | ||
192 | /** | |
193 | * If state->quiet is false, calls fprintf(fp, fmt, ...), and appends a newline | |
194 | * at the end. | |
195 | */ | |
196 | static void say(const struct am_state *state, FILE *fp, const char *fmt, ...) | |
197 | { | |
198 | va_list ap; | |
199 | ||
200 | va_start(ap, fmt); | |
201 | if (!state->quiet) { | |
202 | vfprintf(fp, fmt, ap); | |
203 | putc('\n', fp); | |
204 | } | |
205 | va_end(ap); | |
206 | } | |
207 | ||
208 | /** | |
209 | * Returns 1 if there is an am session in progress, 0 otherwise. | |
210 | */ | |
211 | static int am_in_progress(const struct am_state *state) | |
212 | { | |
213 | struct stat st; | |
214 | ||
215 | if (lstat(state->dir, &st) < 0 || !S_ISDIR(st.st_mode)) | |
216 | return 0; | |
217 | if (lstat(am_path(state, "last"), &st) || !S_ISREG(st.st_mode)) | |
218 | return 0; | |
219 | if (lstat(am_path(state, "next"), &st) || !S_ISREG(st.st_mode)) | |
220 | return 0; | |
221 | return 1; | |
222 | } | |
223 | ||
224 | /** | |
225 | * Reads the contents of `file` in the `state` directory into `sb`. Returns the | |
226 | * number of bytes read on success, -1 if the file does not exist. If `trim` is | |
227 | * set, trailing whitespace will be removed. | |
228 | */ | |
229 | static int read_state_file(struct strbuf *sb, const struct am_state *state, | |
230 | const char *file, int trim) | |
231 | { | |
232 | strbuf_reset(sb); | |
233 | ||
234 | if (strbuf_read_file(sb, am_path(state, file), 0) >= 0) { | |
235 | if (trim) | |
236 | strbuf_trim(sb); | |
237 | ||
238 | return sb->len; | |
239 | } | |
240 | ||
241 | if (errno == ENOENT) | |
242 | return -1; | |
243 | ||
244 | die_errno(_("could not read '%s'"), am_path(state, file)); | |
245 | } | |
246 | ||
247 | /** | |
248 | * Reads and parses the state directory's "author-script" file, and sets | |
249 | * state->author_name, state->author_email and state->author_date accordingly. | |
250 | * Returns 0 on success, -1 if the file could not be parsed. | |
251 | * | |
252 | * The author script is of the format: | |
253 | * | |
254 | * GIT_AUTHOR_NAME='$author_name' | |
255 | * GIT_AUTHOR_EMAIL='$author_email' | |
256 | * GIT_AUTHOR_DATE='$author_date' | |
257 | * | |
258 | * where $author_name, $author_email and $author_date are quoted. We are strict | |
259 | * with our parsing, as the file was meant to be eval'd in the old git-am.sh | |
260 | * script, and thus if the file differs from what this function expects, it is | |
261 | * better to bail out than to do something that the user does not expect. | |
262 | */ | |
263 | static int read_am_author_script(struct am_state *state) | |
264 | { | |
265 | const char *filename = am_path(state, "author-script"); | |
266 | ||
267 | assert(!state->author_name); | |
268 | assert(!state->author_email); | |
269 | assert(!state->author_date); | |
270 | ||
271 | return read_author_script(filename, &state->author_name, | |
272 | &state->author_email, &state->author_date, 1); | |
273 | } | |
274 | ||
275 | /** | |
276 | * Saves state->author_name, state->author_email and state->author_date in the | |
277 | * state directory's "author-script" file. | |
278 | */ | |
279 | static void write_author_script(const struct am_state *state) | |
280 | { | |
281 | struct strbuf sb = STRBUF_INIT; | |
282 | ||
283 | strbuf_addstr(&sb, "GIT_AUTHOR_NAME="); | |
284 | sq_quote_buf(&sb, state->author_name); | |
285 | strbuf_addch(&sb, '\n'); | |
286 | ||
287 | strbuf_addstr(&sb, "GIT_AUTHOR_EMAIL="); | |
288 | sq_quote_buf(&sb, state->author_email); | |
289 | strbuf_addch(&sb, '\n'); | |
290 | ||
291 | strbuf_addstr(&sb, "GIT_AUTHOR_DATE="); | |
292 | sq_quote_buf(&sb, state->author_date); | |
293 | strbuf_addch(&sb, '\n'); | |
294 | ||
295 | write_state_text(state, "author-script", sb.buf); | |
296 | ||
297 | strbuf_release(&sb); | |
298 | } | |
299 | ||
300 | /** | |
301 | * Reads the commit message from the state directory's "final-commit" file, | |
302 | * setting state->msg to its contents and state->msg_len to the length of its | |
303 | * contents in bytes. | |
304 | * | |
305 | * Returns 0 on success, -1 if the file does not exist. | |
306 | */ | |
307 | static int read_commit_msg(struct am_state *state) | |
308 | { | |
309 | struct strbuf sb = STRBUF_INIT; | |
310 | ||
311 | assert(!state->msg); | |
312 | ||
313 | if (read_state_file(&sb, state, "final-commit", 0) < 0) { | |
314 | strbuf_release(&sb); | |
315 | return -1; | |
316 | } | |
317 | ||
318 | state->msg = strbuf_detach(&sb, &state->msg_len); | |
319 | return 0; | |
320 | } | |
321 | ||
322 | /** | |
323 | * Saves state->msg in the state directory's "final-commit" file. | |
324 | */ | |
325 | static void write_commit_msg(const struct am_state *state) | |
326 | { | |
327 | const char *filename = am_path(state, "final-commit"); | |
328 | write_file_buf(filename, state->msg, state->msg_len); | |
329 | } | |
330 | ||
331 | /** | |
332 | * Loads state from disk. | |
333 | */ | |
334 | static void am_load(struct am_state *state) | |
335 | { | |
336 | struct strbuf sb = STRBUF_INIT; | |
337 | ||
338 | if (read_state_file(&sb, state, "next", 1) < 0) | |
339 | BUG("state file 'next' does not exist"); | |
340 | state->cur = strtol(sb.buf, NULL, 10); | |
341 | ||
342 | if (read_state_file(&sb, state, "last", 1) < 0) | |
343 | BUG("state file 'last' does not exist"); | |
344 | state->last = strtol(sb.buf, NULL, 10); | |
345 | ||
346 | if (read_am_author_script(state) < 0) | |
347 | die(_("could not parse author script")); | |
348 | ||
349 | read_commit_msg(state); | |
350 | ||
351 | if (read_state_file(&sb, state, "original-commit", 1) < 0) | |
352 | oidclr(&state->orig_commit); | |
353 | else if (get_oid_hex(sb.buf, &state->orig_commit) < 0) | |
354 | die(_("could not parse %s"), am_path(state, "original-commit")); | |
355 | ||
356 | read_state_file(&sb, state, "threeway", 1); | |
357 | state->threeway = !strcmp(sb.buf, "t"); | |
358 | ||
359 | read_state_file(&sb, state, "quiet", 1); | |
360 | state->quiet = !strcmp(sb.buf, "t"); | |
361 | ||
362 | read_state_file(&sb, state, "sign", 1); | |
363 | state->signoff = !strcmp(sb.buf, "t"); | |
364 | ||
365 | read_state_file(&sb, state, "utf8", 1); | |
366 | state->utf8 = !strcmp(sb.buf, "t"); | |
367 | ||
368 | if (file_exists(am_path(state, "rerere-autoupdate"))) { | |
369 | read_state_file(&sb, state, "rerere-autoupdate", 1); | |
370 | state->allow_rerere_autoupdate = strcmp(sb.buf, "t") ? | |
371 | RERERE_NOAUTOUPDATE : RERERE_AUTOUPDATE; | |
372 | } else { | |
373 | state->allow_rerere_autoupdate = 0; | |
374 | } | |
375 | ||
376 | read_state_file(&sb, state, "keep", 1); | |
377 | if (!strcmp(sb.buf, "t")) | |
378 | state->keep = KEEP_TRUE; | |
379 | else if (!strcmp(sb.buf, "b")) | |
380 | state->keep = KEEP_NON_PATCH; | |
381 | else | |
382 | state->keep = KEEP_FALSE; | |
383 | ||
384 | read_state_file(&sb, state, "messageid", 1); | |
385 | state->message_id = !strcmp(sb.buf, "t"); | |
386 | ||
387 | read_state_file(&sb, state, "scissors", 1); | |
388 | if (!strcmp(sb.buf, "t")) | |
389 | state->scissors = SCISSORS_TRUE; | |
390 | else if (!strcmp(sb.buf, "f")) | |
391 | state->scissors = SCISSORS_FALSE; | |
392 | else | |
393 | state->scissors = SCISSORS_UNSET; | |
394 | ||
395 | read_state_file(&sb, state, "apply-opt", 1); | |
396 | argv_array_clear(&state->git_apply_opts); | |
397 | if (sq_dequote_to_argv_array(sb.buf, &state->git_apply_opts) < 0) | |
398 | die(_("could not parse %s"), am_path(state, "apply-opt")); | |
399 | ||
400 | state->rebasing = !!file_exists(am_path(state, "rebasing")); | |
401 | ||
402 | strbuf_release(&sb); | |
403 | } | |
404 | ||
405 | /** | |
406 | * Removes the am_state directory, forcefully terminating the current am | |
407 | * session. | |
408 | */ | |
409 | static void am_destroy(const struct am_state *state) | |
410 | { | |
411 | struct strbuf sb = STRBUF_INIT; | |
412 | ||
413 | strbuf_addstr(&sb, state->dir); | |
414 | remove_dir_recursively(&sb, 0); | |
415 | strbuf_release(&sb); | |
416 | } | |
417 | ||
418 | /** | |
419 | * Runs applypatch-msg hook. Returns its exit code. | |
420 | */ | |
421 | static int run_applypatch_msg_hook(struct am_state *state) | |
422 | { | |
423 | int ret; | |
424 | ||
425 | assert(state->msg); | |
426 | ret = run_hook_le(NULL, "applypatch-msg", am_path(state, "final-commit"), NULL); | |
427 | ||
428 | if (!ret) { | |
429 | FREE_AND_NULL(state->msg); | |
430 | if (read_commit_msg(state) < 0) | |
431 | die(_("'%s' was deleted by the applypatch-msg hook"), | |
432 | am_path(state, "final-commit")); | |
433 | } | |
434 | ||
435 | return ret; | |
436 | } | |
437 | ||
438 | /** | |
439 | * Runs post-rewrite hook. Returns it exit code. | |
440 | */ | |
441 | static int run_post_rewrite_hook(const struct am_state *state) | |
442 | { | |
443 | struct child_process cp = CHILD_PROCESS_INIT; | |
444 | const char *hook = find_hook("post-rewrite"); | |
445 | int ret; | |
446 | ||
447 | if (!hook) | |
448 | return 0; | |
449 | ||
450 | argv_array_push(&cp.args, hook); | |
451 | argv_array_push(&cp.args, "rebase"); | |
452 | ||
453 | cp.in = xopen(am_path(state, "rewritten"), O_RDONLY); | |
454 | cp.stdout_to_stderr = 1; | |
455 | cp.trace2_hook_name = "post-rewrite"; | |
456 | ||
457 | ret = run_command(&cp); | |
458 | ||
459 | close(cp.in); | |
460 | return ret; | |
461 | } | |
462 | ||
463 | /** | |
464 | * Reads the state directory's "rewritten" file, and copies notes from the old | |
465 | * commits listed in the file to their rewritten commits. | |
466 | * | |
467 | * Returns 0 on success, -1 on failure. | |
468 | */ | |
469 | static int copy_notes_for_rebase(const struct am_state *state) | |
470 | { | |
471 | struct notes_rewrite_cfg *c; | |
472 | struct strbuf sb = STRBUF_INIT; | |
473 | const char *invalid_line = _("Malformed input line: '%s'."); | |
474 | const char *msg = "Notes added by 'git rebase'"; | |
475 | FILE *fp; | |
476 | int ret = 0; | |
477 | ||
478 | assert(state->rebasing); | |
479 | ||
480 | c = init_copy_notes_for_rewrite("rebase"); | |
481 | if (!c) | |
482 | return 0; | |
483 | ||
484 | fp = xfopen(am_path(state, "rewritten"), "r"); | |
485 | ||
486 | while (!strbuf_getline_lf(&sb, fp)) { | |
487 | struct object_id from_obj, to_obj; | |
488 | const char *p; | |
489 | ||
490 | if (sb.len != the_hash_algo->hexsz * 2 + 1) { | |
491 | ret = error(invalid_line, sb.buf); | |
492 | goto finish; | |
493 | } | |
494 | ||
495 | if (parse_oid_hex(sb.buf, &from_obj, &p)) { | |
496 | ret = error(invalid_line, sb.buf); | |
497 | goto finish; | |
498 | } | |
499 | ||
500 | if (*p != ' ') { | |
501 | ret = error(invalid_line, sb.buf); | |
502 | goto finish; | |
503 | } | |
504 | ||
505 | if (get_oid_hex(p + 1, &to_obj)) { | |
506 | ret = error(invalid_line, sb.buf); | |
507 | goto finish; | |
508 | } | |
509 | ||
510 | if (copy_note_for_rewrite(c, &from_obj, &to_obj)) | |
511 | ret = error(_("Failed to copy notes from '%s' to '%s'"), | |
512 | oid_to_hex(&from_obj), oid_to_hex(&to_obj)); | |
513 | } | |
514 | ||
515 | finish: | |
516 | finish_copy_notes_for_rewrite(the_repository, c, msg); | |
517 | fclose(fp); | |
518 | strbuf_release(&sb); | |
519 | return ret; | |
520 | } | |
521 | ||
522 | /** | |
523 | * Determines if the file looks like a piece of RFC2822 mail by grabbing all | |
524 | * non-indented lines and checking if they look like they begin with valid | |
525 | * header field names. | |
526 | * | |
527 | * Returns 1 if the file looks like a piece of mail, 0 otherwise. | |
528 | */ | |
529 | static int is_mail(FILE *fp) | |
530 | { | |
531 | const char *header_regex = "^[!-9;-~]+:"; | |
532 | struct strbuf sb = STRBUF_INIT; | |
533 | regex_t regex; | |
534 | int ret = 1; | |
535 | ||
536 | if (fseek(fp, 0L, SEEK_SET)) | |
537 | die_errno(_("fseek failed")); | |
538 | ||
539 | if (regcomp(®ex, header_regex, REG_NOSUB | REG_EXTENDED)) | |
540 | die("invalid pattern: %s", header_regex); | |
541 | ||
542 | while (!strbuf_getline(&sb, fp)) { | |
543 | if (!sb.len) | |
544 | break; /* End of header */ | |
545 | ||
546 | /* Ignore indented folded lines */ | |
547 | if (*sb.buf == '\t' || *sb.buf == ' ') | |
548 | continue; | |
549 | ||
550 | /* It's a header if it matches header_regex */ | |
551 | if (regexec(®ex, sb.buf, 0, NULL, 0)) { | |
552 | ret = 0; | |
553 | goto done; | |
554 | } | |
555 | } | |
556 | ||
557 | done: | |
558 | regfree(®ex); | |
559 | strbuf_release(&sb); | |
560 | return ret; | |
561 | } | |
562 | ||
563 | /** | |
564 | * Attempts to detect the patch_format of the patches contained in `paths`, | |
565 | * returning the PATCH_FORMAT_* enum value. Returns PATCH_FORMAT_UNKNOWN if | |
566 | * detection fails. | |
567 | */ | |
568 | static int detect_patch_format(const char **paths) | |
569 | { | |
570 | enum patch_format ret = PATCH_FORMAT_UNKNOWN; | |
571 | struct strbuf l1 = STRBUF_INIT; | |
572 | struct strbuf l2 = STRBUF_INIT; | |
573 | struct strbuf l3 = STRBUF_INIT; | |
574 | FILE *fp; | |
575 | ||
576 | /* | |
577 | * We default to mbox format if input is from stdin and for directories | |
578 | */ | |
579 | if (!*paths || !strcmp(*paths, "-") || is_directory(*paths)) | |
580 | return PATCH_FORMAT_MBOX; | |
581 | ||
582 | /* | |
583 | * Otherwise, check the first few lines of the first patch, starting | |
584 | * from the first non-blank line, to try to detect its format. | |
585 | */ | |
586 | ||
587 | fp = xfopen(*paths, "r"); | |
588 | ||
589 | while (!strbuf_getline(&l1, fp)) { | |
590 | if (l1.len) | |
591 | break; | |
592 | } | |
593 | ||
594 | if (starts_with(l1.buf, "From ") || starts_with(l1.buf, "From: ")) { | |
595 | ret = PATCH_FORMAT_MBOX; | |
596 | goto done; | |
597 | } | |
598 | ||
599 | if (starts_with(l1.buf, "# This series applies on GIT commit")) { | |
600 | ret = PATCH_FORMAT_STGIT_SERIES; | |
601 | goto done; | |
602 | } | |
603 | ||
604 | if (!strcmp(l1.buf, "# HG changeset patch")) { | |
605 | ret = PATCH_FORMAT_HG; | |
606 | goto done; | |
607 | } | |
608 | ||
609 | strbuf_getline(&l2, fp); | |
610 | strbuf_getline(&l3, fp); | |
611 | ||
612 | /* | |
613 | * If the second line is empty and the third is a From, Author or Date | |
614 | * entry, this is likely an StGit patch. | |
615 | */ | |
616 | if (l1.len && !l2.len && | |
617 | (starts_with(l3.buf, "From:") || | |
618 | starts_with(l3.buf, "Author:") || | |
619 | starts_with(l3.buf, "Date:"))) { | |
620 | ret = PATCH_FORMAT_STGIT; | |
621 | goto done; | |
622 | } | |
623 | ||
624 | if (l1.len && is_mail(fp)) { | |
625 | ret = PATCH_FORMAT_MBOX; | |
626 | goto done; | |
627 | } | |
628 | ||
629 | done: | |
630 | fclose(fp); | |
631 | strbuf_release(&l1); | |
632 | strbuf_release(&l2); | |
633 | strbuf_release(&l3); | |
634 | return ret; | |
635 | } | |
636 | ||
637 | /** | |
638 | * Splits out individual email patches from `paths`, where each path is either | |
639 | * a mbox file or a Maildir. Returns 0 on success, -1 on failure. | |
640 | */ | |
641 | static int split_mail_mbox(struct am_state *state, const char **paths, | |
642 | int keep_cr, int mboxrd) | |
643 | { | |
644 | struct child_process cp = CHILD_PROCESS_INIT; | |
645 | struct strbuf last = STRBUF_INIT; | |
646 | int ret; | |
647 | ||
648 | cp.git_cmd = 1; | |
649 | argv_array_push(&cp.args, "mailsplit"); | |
650 | argv_array_pushf(&cp.args, "-d%d", state->prec); | |
651 | argv_array_pushf(&cp.args, "-o%s", state->dir); | |
652 | argv_array_push(&cp.args, "-b"); | |
653 | if (keep_cr) | |
654 | argv_array_push(&cp.args, "--keep-cr"); | |
655 | if (mboxrd) | |
656 | argv_array_push(&cp.args, "--mboxrd"); | |
657 | argv_array_push(&cp.args, "--"); | |
658 | argv_array_pushv(&cp.args, paths); | |
659 | ||
660 | ret = capture_command(&cp, &last, 8); | |
661 | if (ret) | |
662 | goto exit; | |
663 | ||
664 | state->cur = 1; | |
665 | state->last = strtol(last.buf, NULL, 10); | |
666 | ||
667 | exit: | |
668 | strbuf_release(&last); | |
669 | return ret ? -1 : 0; | |
670 | } | |
671 | ||
672 | /** | |
673 | * Callback signature for split_mail_conv(). The foreign patch should be | |
674 | * read from `in`, and the converted patch (in RFC2822 mail format) should be | |
675 | * written to `out`. Return 0 on success, or -1 on failure. | |
676 | */ | |
677 | typedef int (*mail_conv_fn)(FILE *out, FILE *in, int keep_cr); | |
678 | ||
679 | /** | |
680 | * Calls `fn` for each file in `paths` to convert the foreign patch to the | |
681 | * RFC2822 mail format suitable for parsing with git-mailinfo. | |
682 | * | |
683 | * Returns 0 on success, -1 on failure. | |
684 | */ | |
685 | static int split_mail_conv(mail_conv_fn fn, struct am_state *state, | |
686 | const char **paths, int keep_cr) | |
687 | { | |
688 | static const char *stdin_only[] = {"-", NULL}; | |
689 | int i; | |
690 | ||
691 | if (!*paths) | |
692 | paths = stdin_only; | |
693 | ||
694 | for (i = 0; *paths; paths++, i++) { | |
695 | FILE *in, *out; | |
696 | const char *mail; | |
697 | int ret; | |
698 | ||
699 | if (!strcmp(*paths, "-")) | |
700 | in = stdin; | |
701 | else | |
702 | in = fopen(*paths, "r"); | |
703 | ||
704 | if (!in) | |
705 | return error_errno(_("could not open '%s' for reading"), | |
706 | *paths); | |
707 | ||
708 | mail = mkpath("%s/%0*d", state->dir, state->prec, i + 1); | |
709 | ||
710 | out = fopen(mail, "w"); | |
711 | if (!out) { | |
712 | if (in != stdin) | |
713 | fclose(in); | |
714 | return error_errno(_("could not open '%s' for writing"), | |
715 | mail); | |
716 | } | |
717 | ||
718 | ret = fn(out, in, keep_cr); | |
719 | ||
720 | fclose(out); | |
721 | if (in != stdin) | |
722 | fclose(in); | |
723 | ||
724 | if (ret) | |
725 | return error(_("could not parse patch '%s'"), *paths); | |
726 | } | |
727 | ||
728 | state->cur = 1; | |
729 | state->last = i; | |
730 | return 0; | |
731 | } | |
732 | ||
733 | /** | |
734 | * A split_mail_conv() callback that converts an StGit patch to an RFC2822 | |
735 | * message suitable for parsing with git-mailinfo. | |
736 | */ | |
737 | static int stgit_patch_to_mail(FILE *out, FILE *in, int keep_cr) | |
738 | { | |
739 | struct strbuf sb = STRBUF_INIT; | |
740 | int subject_printed = 0; | |
741 | ||
742 | while (!strbuf_getline_lf(&sb, in)) { | |
743 | const char *str; | |
744 | ||
745 | if (str_isspace(sb.buf)) | |
746 | continue; | |
747 | else if (skip_prefix(sb.buf, "Author:", &str)) | |
748 | fprintf(out, "From:%s\n", str); | |
749 | else if (starts_with(sb.buf, "From") || starts_with(sb.buf, "Date")) | |
750 | fprintf(out, "%s\n", sb.buf); | |
751 | else if (!subject_printed) { | |
752 | fprintf(out, "Subject: %s\n", sb.buf); | |
753 | subject_printed = 1; | |
754 | } else { | |
755 | fprintf(out, "\n%s\n", sb.buf); | |
756 | break; | |
757 | } | |
758 | } | |
759 | ||
760 | strbuf_reset(&sb); | |
761 | while (strbuf_fread(&sb, 8192, in) > 0) { | |
762 | fwrite(sb.buf, 1, sb.len, out); | |
763 | strbuf_reset(&sb); | |
764 | } | |
765 | ||
766 | strbuf_release(&sb); | |
767 | return 0; | |
768 | } | |
769 | ||
770 | /** | |
771 | * This function only supports a single StGit series file in `paths`. | |
772 | * | |
773 | * Given an StGit series file, converts the StGit patches in the series into | |
774 | * RFC2822 messages suitable for parsing with git-mailinfo, and queues them in | |
775 | * the state directory. | |
776 | * | |
777 | * Returns 0 on success, -1 on failure. | |
778 | */ | |
779 | static int split_mail_stgit_series(struct am_state *state, const char **paths, | |
780 | int keep_cr) | |
781 | { | |
782 | const char *series_dir; | |
783 | char *series_dir_buf; | |
784 | FILE *fp; | |
785 | struct argv_array patches = ARGV_ARRAY_INIT; | |
786 | struct strbuf sb = STRBUF_INIT; | |
787 | int ret; | |
788 | ||
789 | if (!paths[0] || paths[1]) | |
790 | return error(_("Only one StGIT patch series can be applied at once")); | |
791 | ||
792 | series_dir_buf = xstrdup(*paths); | |
793 | series_dir = dirname(series_dir_buf); | |
794 | ||
795 | fp = fopen(*paths, "r"); | |
796 | if (!fp) | |
797 | return error_errno(_("could not open '%s' for reading"), *paths); | |
798 | ||
799 | while (!strbuf_getline_lf(&sb, fp)) { | |
800 | if (*sb.buf == '#') | |
801 | continue; /* skip comment lines */ | |
802 | ||
803 | argv_array_push(&patches, mkpath("%s/%s", series_dir, sb.buf)); | |
804 | } | |
805 | ||
806 | fclose(fp); | |
807 | strbuf_release(&sb); | |
808 | free(series_dir_buf); | |
809 | ||
810 | ret = split_mail_conv(stgit_patch_to_mail, state, patches.argv, keep_cr); | |
811 | ||
812 | argv_array_clear(&patches); | |
813 | return ret; | |
814 | } | |
815 | ||
816 | /** | |
817 | * A split_patches_conv() callback that converts a mercurial patch to a RFC2822 | |
818 | * message suitable for parsing with git-mailinfo. | |
819 | */ | |
820 | static int hg_patch_to_mail(FILE *out, FILE *in, int keep_cr) | |
821 | { | |
822 | struct strbuf sb = STRBUF_INIT; | |
823 | int rc = 0; | |
824 | ||
825 | while (!strbuf_getline_lf(&sb, in)) { | |
826 | const char *str; | |
827 | ||
828 | if (skip_prefix(sb.buf, "# User ", &str)) | |
829 | fprintf(out, "From: %s\n", str); | |
830 | else if (skip_prefix(sb.buf, "# Date ", &str)) { | |
831 | timestamp_t timestamp; | |
832 | long tz, tz2; | |
833 | char *end; | |
834 | ||
835 | errno = 0; | |
836 | timestamp = parse_timestamp(str, &end, 10); | |
837 | if (errno) { | |
838 | rc = error(_("invalid timestamp")); | |
839 | goto exit; | |
840 | } | |
841 | ||
842 | if (!skip_prefix(end, " ", &str)) { | |
843 | rc = error(_("invalid Date line")); | |
844 | goto exit; | |
845 | } | |
846 | ||
847 | errno = 0; | |
848 | tz = strtol(str, &end, 10); | |
849 | if (errno) { | |
850 | rc = error(_("invalid timezone offset")); | |
851 | goto exit; | |
852 | } | |
853 | ||
854 | if (*end) { | |
855 | rc = error(_("invalid Date line")); | |
856 | goto exit; | |
857 | } | |
858 | ||
859 | /* | |
860 | * mercurial's timezone is in seconds west of UTC, | |
861 | * however git's timezone is in hours + minutes east of | |
862 | * UTC. Convert it. | |
863 | */ | |
864 | tz2 = labs(tz) / 3600 * 100 + labs(tz) % 3600 / 60; | |
865 | if (tz > 0) | |
866 | tz2 = -tz2; | |
867 | ||
868 | fprintf(out, "Date: %s\n", show_date(timestamp, tz2, DATE_MODE(RFC2822))); | |
869 | } else if (starts_with(sb.buf, "# ")) { | |
870 | continue; | |
871 | } else { | |
872 | fprintf(out, "\n%s\n", sb.buf); | |
873 | break; | |
874 | } | |
875 | } | |
876 | ||
877 | strbuf_reset(&sb); | |
878 | while (strbuf_fread(&sb, 8192, in) > 0) { | |
879 | fwrite(sb.buf, 1, sb.len, out); | |
880 | strbuf_reset(&sb); | |
881 | } | |
882 | exit: | |
883 | strbuf_release(&sb); | |
884 | return rc; | |
885 | } | |
886 | ||
887 | /** | |
888 | * Splits a list of files/directories into individual email patches. Each path | |
889 | * in `paths` must be a file/directory that is formatted according to | |
890 | * `patch_format`. | |
891 | * | |
892 | * Once split out, the individual email patches will be stored in the state | |
893 | * directory, with each patch's filename being its index, padded to state->prec | |
894 | * digits. | |
895 | * | |
896 | * state->cur will be set to the index of the first mail, and state->last will | |
897 | * be set to the index of the last mail. | |
898 | * | |
899 | * Set keep_cr to 0 to convert all lines ending with \r\n to end with \n, 1 | |
900 | * to disable this behavior, -1 to use the default configured setting. | |
901 | * | |
902 | * Returns 0 on success, -1 on failure. | |
903 | */ | |
904 | static int split_mail(struct am_state *state, enum patch_format patch_format, | |
905 | const char **paths, int keep_cr) | |
906 | { | |
907 | if (keep_cr < 0) { | |
908 | keep_cr = 0; | |
909 | git_config_get_bool("am.keepcr", &keep_cr); | |
910 | } | |
911 | ||
912 | switch (patch_format) { | |
913 | case PATCH_FORMAT_MBOX: | |
914 | return split_mail_mbox(state, paths, keep_cr, 0); | |
915 | case PATCH_FORMAT_STGIT: | |
916 | return split_mail_conv(stgit_patch_to_mail, state, paths, keep_cr); | |
917 | case PATCH_FORMAT_STGIT_SERIES: | |
918 | return split_mail_stgit_series(state, paths, keep_cr); | |
919 | case PATCH_FORMAT_HG: | |
920 | return split_mail_conv(hg_patch_to_mail, state, paths, keep_cr); | |
921 | case PATCH_FORMAT_MBOXRD: | |
922 | return split_mail_mbox(state, paths, keep_cr, 1); | |
923 | default: | |
924 | BUG("invalid patch_format"); | |
925 | } | |
926 | return -1; | |
927 | } | |
928 | ||
929 | /** | |
930 | * Setup a new am session for applying patches | |
931 | */ | |
932 | static void am_setup(struct am_state *state, enum patch_format patch_format, | |
933 | const char **paths, int keep_cr) | |
934 | { | |
935 | struct object_id curr_head; | |
936 | const char *str; | |
937 | struct strbuf sb = STRBUF_INIT; | |
938 | ||
939 | if (!patch_format) | |
940 | patch_format = detect_patch_format(paths); | |
941 | ||
942 | if (!patch_format) { | |
943 | fprintf_ln(stderr, _("Patch format detection failed.")); | |
944 | exit(128); | |
945 | } | |
946 | ||
947 | if (mkdir(state->dir, 0777) < 0 && errno != EEXIST) | |
948 | die_errno(_("failed to create directory '%s'"), state->dir); | |
949 | delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); | |
950 | ||
951 | if (split_mail(state, patch_format, paths, keep_cr) < 0) { | |
952 | am_destroy(state); | |
953 | die(_("Failed to split patches.")); | |
954 | } | |
955 | ||
956 | if (state->rebasing) | |
957 | state->threeway = 1; | |
958 | ||
959 | write_state_bool(state, "threeway", state->threeway); | |
960 | write_state_bool(state, "quiet", state->quiet); | |
961 | write_state_bool(state, "sign", state->signoff); | |
962 | write_state_bool(state, "utf8", state->utf8); | |
963 | ||
964 | if (state->allow_rerere_autoupdate) | |
965 | write_state_bool(state, "rerere-autoupdate", | |
966 | state->allow_rerere_autoupdate == RERERE_AUTOUPDATE); | |
967 | ||
968 | switch (state->keep) { | |
969 | case KEEP_FALSE: | |
970 | str = "f"; | |
971 | break; | |
972 | case KEEP_TRUE: | |
973 | str = "t"; | |
974 | break; | |
975 | case KEEP_NON_PATCH: | |
976 | str = "b"; | |
977 | break; | |
978 | default: | |
979 | BUG("invalid value for state->keep"); | |
980 | } | |
981 | ||
982 | write_state_text(state, "keep", str); | |
983 | write_state_bool(state, "messageid", state->message_id); | |
984 | ||
985 | switch (state->scissors) { | |
986 | case SCISSORS_UNSET: | |
987 | str = ""; | |
988 | break; | |
989 | case SCISSORS_FALSE: | |
990 | str = "f"; | |
991 | break; | |
992 | case SCISSORS_TRUE: | |
993 | str = "t"; | |
994 | break; | |
995 | default: | |
996 | BUG("invalid value for state->scissors"); | |
997 | } | |
998 | write_state_text(state, "scissors", str); | |
999 | ||
1000 | sq_quote_argv(&sb, state->git_apply_opts.argv); | |
1001 | write_state_text(state, "apply-opt", sb.buf); | |
1002 | ||
1003 | if (state->rebasing) | |
1004 | write_state_text(state, "rebasing", ""); | |
1005 | else | |
1006 | write_state_text(state, "applying", ""); | |
1007 | ||
1008 | if (!get_oid("HEAD", &curr_head)) { | |
1009 | write_state_text(state, "abort-safety", oid_to_hex(&curr_head)); | |
1010 | if (!state->rebasing) | |
1011 | update_ref("am", "ORIG_HEAD", &curr_head, NULL, 0, | |
1012 | UPDATE_REFS_DIE_ON_ERR); | |
1013 | } else { | |
1014 | write_state_text(state, "abort-safety", ""); | |
1015 | if (!state->rebasing) | |
1016 | delete_ref(NULL, "ORIG_HEAD", NULL, 0); | |
1017 | } | |
1018 | ||
1019 | /* | |
1020 | * NOTE: Since the "next" and "last" files determine if an am_state | |
1021 | * session is in progress, they should be written last. | |
1022 | */ | |
1023 | ||
1024 | write_state_count(state, "next", state->cur); | |
1025 | write_state_count(state, "last", state->last); | |
1026 | ||
1027 | strbuf_release(&sb); | |
1028 | } | |
1029 | ||
1030 | /** | |
1031 | * Increments the patch pointer, and cleans am_state for the application of the | |
1032 | * next patch. | |
1033 | */ | |
1034 | static void am_next(struct am_state *state) | |
1035 | { | |
1036 | struct object_id head; | |
1037 | ||
1038 | FREE_AND_NULL(state->author_name); | |
1039 | FREE_AND_NULL(state->author_email); | |
1040 | FREE_AND_NULL(state->author_date); | |
1041 | FREE_AND_NULL(state->msg); | |
1042 | state->msg_len = 0; | |
1043 | ||
1044 | unlink(am_path(state, "author-script")); | |
1045 | unlink(am_path(state, "final-commit")); | |
1046 | ||
1047 | oidclr(&state->orig_commit); | |
1048 | unlink(am_path(state, "original-commit")); | |
1049 | delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); | |
1050 | ||
1051 | if (!get_oid("HEAD", &head)) | |
1052 | write_state_text(state, "abort-safety", oid_to_hex(&head)); | |
1053 | else | |
1054 | write_state_text(state, "abort-safety", ""); | |
1055 | ||
1056 | state->cur++; | |
1057 | write_state_count(state, "next", state->cur); | |
1058 | } | |
1059 | ||
1060 | /** | |
1061 | * Returns the filename of the current patch email. | |
1062 | */ | |
1063 | static const char *msgnum(const struct am_state *state) | |
1064 | { | |
1065 | static struct strbuf sb = STRBUF_INIT; | |
1066 | ||
1067 | strbuf_reset(&sb); | |
1068 | strbuf_addf(&sb, "%0*d", state->prec, state->cur); | |
1069 | ||
1070 | return sb.buf; | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * Dies with a user-friendly message on how to proceed after resolving the | |
1075 | * problem. This message can be overridden with state->resolvemsg. | |
1076 | */ | |
1077 | static void NORETURN die_user_resolve(const struct am_state *state) | |
1078 | { | |
1079 | if (state->resolvemsg) { | |
1080 | printf_ln("%s", state->resolvemsg); | |
1081 | } else { | |
1082 | const char *cmdline = state->interactive ? "git am -i" : "git am"; | |
1083 | ||
1084 | printf_ln(_("When you have resolved this problem, run \"%s --continue\"."), cmdline); | |
1085 | printf_ln(_("If you prefer to skip this patch, run \"%s --skip\" instead."), cmdline); | |
1086 | printf_ln(_("To restore the original branch and stop patching, run \"%s --abort\"."), cmdline); | |
1087 | } | |
1088 | ||
1089 | exit(128); | |
1090 | } | |
1091 | ||
1092 | /** | |
1093 | * Appends signoff to the "msg" field of the am_state. | |
1094 | */ | |
1095 | static void am_append_signoff(struct am_state *state) | |
1096 | { | |
1097 | struct strbuf sb = STRBUF_INIT; | |
1098 | ||
1099 | strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len); | |
1100 | append_signoff(&sb, 0, 0); | |
1101 | state->msg = strbuf_detach(&sb, &state->msg_len); | |
1102 | } | |
1103 | ||
1104 | /** | |
1105 | * Parses `mail` using git-mailinfo, extracting its patch and authorship info. | |
1106 | * state->msg will be set to the patch message. state->author_name, | |
1107 | * state->author_email and state->author_date will be set to the patch author's | |
1108 | * name, email and date respectively. The patch body will be written to the | |
1109 | * state directory's "patch" file. | |
1110 | * | |
1111 | * Returns 1 if the patch should be skipped, 0 otherwise. | |
1112 | */ | |
1113 | static int parse_mail(struct am_state *state, const char *mail) | |
1114 | { | |
1115 | FILE *fp; | |
1116 | struct strbuf sb = STRBUF_INIT; | |
1117 | struct strbuf msg = STRBUF_INIT; | |
1118 | struct strbuf author_name = STRBUF_INIT; | |
1119 | struct strbuf author_date = STRBUF_INIT; | |
1120 | struct strbuf author_email = STRBUF_INIT; | |
1121 | int ret = 0; | |
1122 | struct mailinfo mi; | |
1123 | ||
1124 | setup_mailinfo(&mi); | |
1125 | ||
1126 | if (state->utf8) | |
1127 | mi.metainfo_charset = get_commit_output_encoding(); | |
1128 | else | |
1129 | mi.metainfo_charset = NULL; | |
1130 | ||
1131 | switch (state->keep) { | |
1132 | case KEEP_FALSE: | |
1133 | break; | |
1134 | case KEEP_TRUE: | |
1135 | mi.keep_subject = 1; | |
1136 | break; | |
1137 | case KEEP_NON_PATCH: | |
1138 | mi.keep_non_patch_brackets_in_subject = 1; | |
1139 | break; | |
1140 | default: | |
1141 | BUG("invalid value for state->keep"); | |
1142 | } | |
1143 | ||
1144 | if (state->message_id) | |
1145 | mi.add_message_id = 1; | |
1146 | ||
1147 | switch (state->scissors) { | |
1148 | case SCISSORS_UNSET: | |
1149 | break; | |
1150 | case SCISSORS_FALSE: | |
1151 | mi.use_scissors = 0; | |
1152 | break; | |
1153 | case SCISSORS_TRUE: | |
1154 | mi.use_scissors = 1; | |
1155 | break; | |
1156 | default: | |
1157 | BUG("invalid value for state->scissors"); | |
1158 | } | |
1159 | ||
1160 | mi.input = xfopen(mail, "r"); | |
1161 | mi.output = xfopen(am_path(state, "info"), "w"); | |
1162 | if (mailinfo(&mi, am_path(state, "msg"), am_path(state, "patch"))) | |
1163 | die("could not parse patch"); | |
1164 | ||
1165 | fclose(mi.input); | |
1166 | fclose(mi.output); | |
1167 | ||
1168 | if (mi.format_flowed) | |
1169 | warning(_("Patch sent with format=flowed; " | |
1170 | "space at the end of lines might be lost.")); | |
1171 | ||
1172 | /* Extract message and author information */ | |
1173 | fp = xfopen(am_path(state, "info"), "r"); | |
1174 | while (!strbuf_getline_lf(&sb, fp)) { | |
1175 | const char *x; | |
1176 | ||
1177 | if (skip_prefix(sb.buf, "Subject: ", &x)) { | |
1178 | if (msg.len) | |
1179 | strbuf_addch(&msg, '\n'); | |
1180 | strbuf_addstr(&msg, x); | |
1181 | } else if (skip_prefix(sb.buf, "Author: ", &x)) | |
1182 | strbuf_addstr(&author_name, x); | |
1183 | else if (skip_prefix(sb.buf, "Email: ", &x)) | |
1184 | strbuf_addstr(&author_email, x); | |
1185 | else if (skip_prefix(sb.buf, "Date: ", &x)) | |
1186 | strbuf_addstr(&author_date, x); | |
1187 | } | |
1188 | fclose(fp); | |
1189 | ||
1190 | /* Skip pine's internal folder data */ | |
1191 | if (!strcmp(author_name.buf, "Mail System Internal Data")) { | |
1192 | ret = 1; | |
1193 | goto finish; | |
1194 | } | |
1195 | ||
1196 | if (is_empty_or_missing_file(am_path(state, "patch"))) { | |
1197 | printf_ln(_("Patch is empty.")); | |
1198 | die_user_resolve(state); | |
1199 | } | |
1200 | ||
1201 | strbuf_addstr(&msg, "\n\n"); | |
1202 | strbuf_addbuf(&msg, &mi.log_message); | |
1203 | strbuf_stripspace(&msg, 0); | |
1204 | ||
1205 | assert(!state->author_name); | |
1206 | state->author_name = strbuf_detach(&author_name, NULL); | |
1207 | ||
1208 | assert(!state->author_email); | |
1209 | state->author_email = strbuf_detach(&author_email, NULL); | |
1210 | ||
1211 | assert(!state->author_date); | |
1212 | state->author_date = strbuf_detach(&author_date, NULL); | |
1213 | ||
1214 | assert(!state->msg); | |
1215 | state->msg = strbuf_detach(&msg, &state->msg_len); | |
1216 | ||
1217 | finish: | |
1218 | strbuf_release(&msg); | |
1219 | strbuf_release(&author_date); | |
1220 | strbuf_release(&author_email); | |
1221 | strbuf_release(&author_name); | |
1222 | strbuf_release(&sb); | |
1223 | clear_mailinfo(&mi); | |
1224 | return ret; | |
1225 | } | |
1226 | ||
1227 | /** | |
1228 | * Sets commit_id to the commit hash where the mail was generated from. | |
1229 | * Returns 0 on success, -1 on failure. | |
1230 | */ | |
1231 | static int get_mail_commit_oid(struct object_id *commit_id, const char *mail) | |
1232 | { | |
1233 | struct strbuf sb = STRBUF_INIT; | |
1234 | FILE *fp = xfopen(mail, "r"); | |
1235 | const char *x; | |
1236 | int ret = 0; | |
1237 | ||
1238 | if (strbuf_getline_lf(&sb, fp) || | |
1239 | !skip_prefix(sb.buf, "From ", &x) || | |
1240 | get_oid_hex(x, commit_id) < 0) | |
1241 | ret = -1; | |
1242 | ||
1243 | strbuf_release(&sb); | |
1244 | fclose(fp); | |
1245 | return ret; | |
1246 | } | |
1247 | ||
1248 | /** | |
1249 | * Sets state->msg, state->author_name, state->author_email, state->author_date | |
1250 | * to the commit's respective info. | |
1251 | */ | |
1252 | static void get_commit_info(struct am_state *state, struct commit *commit) | |
1253 | { | |
1254 | const char *buffer, *ident_line, *msg; | |
1255 | size_t ident_len; | |
1256 | struct ident_split id; | |
1257 | ||
1258 | buffer = logmsg_reencode(commit, NULL, get_commit_output_encoding()); | |
1259 | ||
1260 | ident_line = find_commit_header(buffer, "author", &ident_len); | |
1261 | if (!ident_line) | |
1262 | die(_("missing author line in commit %s"), | |
1263 | oid_to_hex(&commit->object.oid)); | |
1264 | if (split_ident_line(&id, ident_line, ident_len) < 0) | |
1265 | die(_("invalid ident line: %.*s"), (int)ident_len, ident_line); | |
1266 | ||
1267 | assert(!state->author_name); | |
1268 | if (id.name_begin) | |
1269 | state->author_name = | |
1270 | xmemdupz(id.name_begin, id.name_end - id.name_begin); | |
1271 | else | |
1272 | state->author_name = xstrdup(""); | |
1273 | ||
1274 | assert(!state->author_email); | |
1275 | if (id.mail_begin) | |
1276 | state->author_email = | |
1277 | xmemdupz(id.mail_begin, id.mail_end - id.mail_begin); | |
1278 | else | |
1279 | state->author_email = xstrdup(""); | |
1280 | ||
1281 | assert(!state->author_date); | |
1282 | state->author_date = xstrdup(show_ident_date(&id, DATE_MODE(NORMAL))); | |
1283 | ||
1284 | assert(!state->msg); | |
1285 | msg = strstr(buffer, "\n\n"); | |
1286 | if (!msg) | |
1287 | die(_("unable to parse commit %s"), oid_to_hex(&commit->object.oid)); | |
1288 | state->msg = xstrdup(msg + 2); | |
1289 | state->msg_len = strlen(state->msg); | |
1290 | unuse_commit_buffer(commit, buffer); | |
1291 | } | |
1292 | ||
1293 | /** | |
1294 | * Writes `commit` as a patch to the state directory's "patch" file. | |
1295 | */ | |
1296 | static void write_commit_patch(const struct am_state *state, struct commit *commit) | |
1297 | { | |
1298 | struct rev_info rev_info; | |
1299 | FILE *fp; | |
1300 | ||
1301 | fp = xfopen(am_path(state, "patch"), "w"); | |
1302 | repo_init_revisions(the_repository, &rev_info, NULL); | |
1303 | rev_info.diff = 1; | |
1304 | rev_info.abbrev = 0; | |
1305 | rev_info.disable_stdin = 1; | |
1306 | rev_info.show_root_diff = 1; | |
1307 | rev_info.diffopt.output_format = DIFF_FORMAT_PATCH; | |
1308 | rev_info.no_commit_id = 1; | |
1309 | rev_info.diffopt.flags.binary = 1; | |
1310 | rev_info.diffopt.flags.full_index = 1; | |
1311 | rev_info.diffopt.use_color = 0; | |
1312 | rev_info.diffopt.file = fp; | |
1313 | rev_info.diffopt.close_file = 1; | |
1314 | add_pending_object(&rev_info, &commit->object, ""); | |
1315 | diff_setup_done(&rev_info.diffopt); | |
1316 | log_tree_commit(&rev_info, commit); | |
1317 | } | |
1318 | ||
1319 | /** | |
1320 | * Writes the diff of the index against HEAD as a patch to the state | |
1321 | * directory's "patch" file. | |
1322 | */ | |
1323 | static void write_index_patch(const struct am_state *state) | |
1324 | { | |
1325 | struct tree *tree; | |
1326 | struct object_id head; | |
1327 | struct rev_info rev_info; | |
1328 | FILE *fp; | |
1329 | ||
1330 | if (!get_oid("HEAD", &head)) { | |
1331 | struct commit *commit = lookup_commit_or_die(&head, "HEAD"); | |
1332 | tree = get_commit_tree(commit); | |
1333 | } else | |
1334 | tree = lookup_tree(the_repository, | |
1335 | the_repository->hash_algo->empty_tree); | |
1336 | ||
1337 | fp = xfopen(am_path(state, "patch"), "w"); | |
1338 | repo_init_revisions(the_repository, &rev_info, NULL); | |
1339 | rev_info.diff = 1; | |
1340 | rev_info.disable_stdin = 1; | |
1341 | rev_info.no_commit_id = 1; | |
1342 | rev_info.diffopt.output_format = DIFF_FORMAT_PATCH; | |
1343 | rev_info.diffopt.use_color = 0; | |
1344 | rev_info.diffopt.file = fp; | |
1345 | rev_info.diffopt.close_file = 1; | |
1346 | add_pending_object(&rev_info, &tree->object, ""); | |
1347 | diff_setup_done(&rev_info.diffopt); | |
1348 | run_diff_index(&rev_info, 1); | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * Like parse_mail(), but parses the mail by looking up its commit ID | |
1353 | * directly. This is used in --rebasing mode to bypass git-mailinfo's munging | |
1354 | * of patches. | |
1355 | * | |
1356 | * state->orig_commit will be set to the original commit ID. | |
1357 | * | |
1358 | * Will always return 0 as the patch should never be skipped. | |
1359 | */ | |
1360 | static int parse_mail_rebase(struct am_state *state, const char *mail) | |
1361 | { | |
1362 | struct commit *commit; | |
1363 | struct object_id commit_oid; | |
1364 | ||
1365 | if (get_mail_commit_oid(&commit_oid, mail) < 0) | |
1366 | die(_("could not parse %s"), mail); | |
1367 | ||
1368 | commit = lookup_commit_or_die(&commit_oid, mail); | |
1369 | ||
1370 | get_commit_info(state, commit); | |
1371 | ||
1372 | write_commit_patch(state, commit); | |
1373 | ||
1374 | oidcpy(&state->orig_commit, &commit_oid); | |
1375 | write_state_text(state, "original-commit", oid_to_hex(&commit_oid)); | |
1376 | update_ref("am", "REBASE_HEAD", &commit_oid, | |
1377 | NULL, REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR); | |
1378 | ||
1379 | return 0; | |
1380 | } | |
1381 | ||
1382 | /** | |
1383 | * Applies current patch with git-apply. Returns 0 on success, -1 otherwise. If | |
1384 | * `index_file` is not NULL, the patch will be applied to that index. | |
1385 | */ | |
1386 | static int run_apply(const struct am_state *state, const char *index_file) | |
1387 | { | |
1388 | struct argv_array apply_paths = ARGV_ARRAY_INIT; | |
1389 | struct argv_array apply_opts = ARGV_ARRAY_INIT; | |
1390 | struct apply_state apply_state; | |
1391 | int res, opts_left; | |
1392 | int force_apply = 0; | |
1393 | int options = 0; | |
1394 | ||
1395 | if (init_apply_state(&apply_state, the_repository, NULL)) | |
1396 | BUG("init_apply_state() failed"); | |
1397 | ||
1398 | argv_array_push(&apply_opts, "apply"); | |
1399 | argv_array_pushv(&apply_opts, state->git_apply_opts.argv); | |
1400 | ||
1401 | opts_left = apply_parse_options(apply_opts.argc, apply_opts.argv, | |
1402 | &apply_state, &force_apply, &options, | |
1403 | NULL); | |
1404 | ||
1405 | if (opts_left != 0) | |
1406 | die("unknown option passed through to git apply"); | |
1407 | ||
1408 | if (index_file) { | |
1409 | apply_state.index_file = index_file; | |
1410 | apply_state.cached = 1; | |
1411 | } else | |
1412 | apply_state.check_index = 1; | |
1413 | ||
1414 | /* | |
1415 | * If we are allowed to fall back on 3-way merge, don't give false | |
1416 | * errors during the initial attempt. | |
1417 | */ | |
1418 | if (state->threeway && !index_file) | |
1419 | apply_state.apply_verbosity = verbosity_silent; | |
1420 | ||
1421 | if (check_apply_state(&apply_state, force_apply)) | |
1422 | BUG("check_apply_state() failed"); | |
1423 | ||
1424 | argv_array_push(&apply_paths, am_path(state, "patch")); | |
1425 | ||
1426 | res = apply_all_patches(&apply_state, apply_paths.argc, apply_paths.argv, options); | |
1427 | ||
1428 | argv_array_clear(&apply_paths); | |
1429 | argv_array_clear(&apply_opts); | |
1430 | clear_apply_state(&apply_state); | |
1431 | ||
1432 | if (res) | |
1433 | return res; | |
1434 | ||
1435 | if (index_file) { | |
1436 | /* Reload index as apply_all_patches() will have modified it. */ | |
1437 | discard_cache(); | |
1438 | read_cache_from(index_file); | |
1439 | } | |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | /** | |
1445 | * Builds an index that contains just the blobs needed for a 3way merge. | |
1446 | */ | |
1447 | static int build_fake_ancestor(const struct am_state *state, const char *index_file) | |
1448 | { | |
1449 | struct child_process cp = CHILD_PROCESS_INIT; | |
1450 | ||
1451 | cp.git_cmd = 1; | |
1452 | argv_array_push(&cp.args, "apply"); | |
1453 | argv_array_pushv(&cp.args, state->git_apply_opts.argv); | |
1454 | argv_array_pushf(&cp.args, "--build-fake-ancestor=%s", index_file); | |
1455 | argv_array_push(&cp.args, am_path(state, "patch")); | |
1456 | ||
1457 | if (run_command(&cp)) | |
1458 | return -1; | |
1459 | ||
1460 | return 0; | |
1461 | } | |
1462 | ||
1463 | /** | |
1464 | * Attempt a threeway merge, using index_path as the temporary index. | |
1465 | */ | |
1466 | static int fall_back_threeway(const struct am_state *state, const char *index_path) | |
1467 | { | |
1468 | struct object_id orig_tree, their_tree, our_tree; | |
1469 | const struct object_id *bases[1] = { &orig_tree }; | |
1470 | struct merge_options o; | |
1471 | struct commit *result; | |
1472 | char *their_tree_name; | |
1473 | ||
1474 | if (get_oid("HEAD", &our_tree) < 0) | |
1475 | oidcpy(&our_tree, the_hash_algo->empty_tree); | |
1476 | ||
1477 | if (build_fake_ancestor(state, index_path)) | |
1478 | return error("could not build fake ancestor"); | |
1479 | ||
1480 | discard_cache(); | |
1481 | read_cache_from(index_path); | |
1482 | ||
1483 | if (write_index_as_tree(&orig_tree, &the_index, index_path, 0, NULL)) | |
1484 | return error(_("Repository lacks necessary blobs to fall back on 3-way merge.")); | |
1485 | ||
1486 | say(state, stdout, _("Using index info to reconstruct a base tree...")); | |
1487 | ||
1488 | if (!state->quiet) { | |
1489 | /* | |
1490 | * List paths that needed 3-way fallback, so that the user can | |
1491 | * review them with extra care to spot mismerges. | |
1492 | */ | |
1493 | struct rev_info rev_info; | |
1494 | ||
1495 | repo_init_revisions(the_repository, &rev_info, NULL); | |
1496 | rev_info.diffopt.output_format = DIFF_FORMAT_NAME_STATUS; | |
1497 | rev_info.diffopt.filter |= diff_filter_bit('A'); | |
1498 | rev_info.diffopt.filter |= diff_filter_bit('M'); | |
1499 | add_pending_oid(&rev_info, "HEAD", &our_tree, 0); | |
1500 | diff_setup_done(&rev_info.diffopt); | |
1501 | run_diff_index(&rev_info, 1); | |
1502 | } | |
1503 | ||
1504 | if (run_apply(state, index_path)) | |
1505 | return error(_("Did you hand edit your patch?\n" | |
1506 | "It does not apply to blobs recorded in its index.")); | |
1507 | ||
1508 | if (write_index_as_tree(&their_tree, &the_index, index_path, 0, NULL)) | |
1509 | return error("could not write tree"); | |
1510 | ||
1511 | say(state, stdout, _("Falling back to patching base and 3-way merge...")); | |
1512 | ||
1513 | discard_cache(); | |
1514 | read_cache(); | |
1515 | ||
1516 | /* | |
1517 | * This is not so wrong. Depending on which base we picked, orig_tree | |
1518 | * may be wildly different from ours, but their_tree has the same set of | |
1519 | * wildly different changes in parts the patch did not touch, so | |
1520 | * recursive ends up canceling them, saying that we reverted all those | |
1521 | * changes. | |
1522 | */ | |
1523 | ||
1524 | init_merge_options(&o, the_repository); | |
1525 | ||
1526 | o.branch1 = "HEAD"; | |
1527 | their_tree_name = xstrfmt("%.*s", linelen(state->msg), state->msg); | |
1528 | o.branch2 = their_tree_name; | |
1529 | o.detect_directory_renames = MERGE_DIRECTORY_RENAMES_NONE; | |
1530 | ||
1531 | if (state->quiet) | |
1532 | o.verbosity = 0; | |
1533 | ||
1534 | if (merge_recursive_generic(&o, &our_tree, &their_tree, 1, bases, &result)) { | |
1535 | repo_rerere(the_repository, state->allow_rerere_autoupdate); | |
1536 | free(their_tree_name); | |
1537 | return error(_("Failed to merge in the changes.")); | |
1538 | } | |
1539 | ||
1540 | free(their_tree_name); | |
1541 | return 0; | |
1542 | } | |
1543 | ||
1544 | /** | |
1545 | * Commits the current index with state->msg as the commit message and | |
1546 | * state->author_name, state->author_email and state->author_date as the author | |
1547 | * information. | |
1548 | */ | |
1549 | static void do_commit(const struct am_state *state) | |
1550 | { | |
1551 | struct object_id tree, parent, commit; | |
1552 | const struct object_id *old_oid; | |
1553 | struct commit_list *parents = NULL; | |
1554 | const char *reflog_msg, *author; | |
1555 | struct strbuf sb = STRBUF_INIT; | |
1556 | ||
1557 | if (run_hook_le(NULL, "pre-applypatch", NULL)) | |
1558 | exit(1); | |
1559 | ||
1560 | if (write_cache_as_tree(&tree, 0, NULL)) | |
1561 | die(_("git write-tree failed to write a tree")); | |
1562 | ||
1563 | if (!get_oid_commit("HEAD", &parent)) { | |
1564 | old_oid = &parent; | |
1565 | commit_list_insert(lookup_commit(the_repository, &parent), | |
1566 | &parents); | |
1567 | } else { | |
1568 | old_oid = NULL; | |
1569 | say(state, stderr, _("applying to an empty history")); | |
1570 | } | |
1571 | ||
1572 | author = fmt_ident(state->author_name, state->author_email, | |
1573 | WANT_AUTHOR_IDENT, | |
1574 | state->ignore_date ? NULL : state->author_date, | |
1575 | IDENT_STRICT); | |
1576 | ||
1577 | if (state->committer_date_is_author_date) | |
1578 | setenv("GIT_COMMITTER_DATE", | |
1579 | state->ignore_date ? "" : state->author_date, 1); | |
1580 | ||
1581 | if (commit_tree(state->msg, state->msg_len, &tree, parents, &commit, | |
1582 | author, state->sign_commit)) | |
1583 | die(_("failed to write commit object")); | |
1584 | ||
1585 | reflog_msg = getenv("GIT_REFLOG_ACTION"); | |
1586 | if (!reflog_msg) | |
1587 | reflog_msg = "am"; | |
1588 | ||
1589 | strbuf_addf(&sb, "%s: %.*s", reflog_msg, linelen(state->msg), | |
1590 | state->msg); | |
1591 | ||
1592 | update_ref(sb.buf, "HEAD", &commit, old_oid, 0, | |
1593 | UPDATE_REFS_DIE_ON_ERR); | |
1594 | ||
1595 | if (state->rebasing) { | |
1596 | FILE *fp = xfopen(am_path(state, "rewritten"), "a"); | |
1597 | ||
1598 | assert(!is_null_oid(&state->orig_commit)); | |
1599 | fprintf(fp, "%s ", oid_to_hex(&state->orig_commit)); | |
1600 | fprintf(fp, "%s\n", oid_to_hex(&commit)); | |
1601 | fclose(fp); | |
1602 | } | |
1603 | ||
1604 | run_hook_le(NULL, "post-applypatch", NULL); | |
1605 | ||
1606 | strbuf_release(&sb); | |
1607 | } | |
1608 | ||
1609 | /** | |
1610 | * Validates the am_state for resuming -- the "msg" and authorship fields must | |
1611 | * be filled up. | |
1612 | */ | |
1613 | static void validate_resume_state(const struct am_state *state) | |
1614 | { | |
1615 | if (!state->msg) | |
1616 | die(_("cannot resume: %s does not exist."), | |
1617 | am_path(state, "final-commit")); | |
1618 | ||
1619 | if (!state->author_name || !state->author_email || !state->author_date) | |
1620 | die(_("cannot resume: %s does not exist."), | |
1621 | am_path(state, "author-script")); | |
1622 | } | |
1623 | ||
1624 | /** | |
1625 | * Interactively prompt the user on whether the current patch should be | |
1626 | * applied. | |
1627 | * | |
1628 | * Returns 0 if the user chooses to apply the patch, 1 if the user chooses to | |
1629 | * skip it. | |
1630 | */ | |
1631 | static int do_interactive(struct am_state *state) | |
1632 | { | |
1633 | assert(state->msg); | |
1634 | ||
1635 | for (;;) { | |
1636 | char reply[64]; | |
1637 | ||
1638 | puts(_("Commit Body is:")); | |
1639 | puts("--------------------------"); | |
1640 | printf("%s", state->msg); | |
1641 | puts("--------------------------"); | |
1642 | ||
1643 | /* | |
1644 | * TRANSLATORS: Make sure to include [y], [n], [e], [v] and [a] | |
1645 | * in your translation. The program will only accept English | |
1646 | * input at this point. | |
1647 | */ | |
1648 | printf(_("Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all: ")); | |
1649 | if (!fgets(reply, sizeof(reply), stdin)) | |
1650 | die("unable to read from stdin; aborting"); | |
1651 | ||
1652 | if (*reply == 'y' || *reply == 'Y') { | |
1653 | return 0; | |
1654 | } else if (*reply == 'a' || *reply == 'A') { | |
1655 | state->interactive = 0; | |
1656 | return 0; | |
1657 | } else if (*reply == 'n' || *reply == 'N') { | |
1658 | return 1; | |
1659 | } else if (*reply == 'e' || *reply == 'E') { | |
1660 | struct strbuf msg = STRBUF_INIT; | |
1661 | ||
1662 | if (!launch_editor(am_path(state, "final-commit"), &msg, NULL)) { | |
1663 | free(state->msg); | |
1664 | state->msg = strbuf_detach(&msg, &state->msg_len); | |
1665 | } | |
1666 | strbuf_release(&msg); | |
1667 | } else if (*reply == 'v' || *reply == 'V') { | |
1668 | const char *pager = git_pager(1); | |
1669 | struct child_process cp = CHILD_PROCESS_INIT; | |
1670 | ||
1671 | if (!pager) | |
1672 | pager = "cat"; | |
1673 | prepare_pager_args(&cp, pager); | |
1674 | argv_array_push(&cp.args, am_path(state, "patch")); | |
1675 | run_command(&cp); | |
1676 | } | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | /** | |
1681 | * Applies all queued mail. | |
1682 | * | |
1683 | * If `resume` is true, we are "resuming". The "msg" and authorship fields, as | |
1684 | * well as the state directory's "patch" file is used as-is for applying the | |
1685 | * patch and committing it. | |
1686 | */ | |
1687 | static void am_run(struct am_state *state, int resume) | |
1688 | { | |
1689 | const char *argv_gc_auto[] = {"gc", "--auto", NULL}; | |
1690 | struct strbuf sb = STRBUF_INIT; | |
1691 | ||
1692 | unlink(am_path(state, "dirtyindex")); | |
1693 | ||
1694 | if (refresh_and_write_cache(REFRESH_QUIET, 0, 0) < 0) | |
1695 | die(_("unable to write index file")); | |
1696 | ||
1697 | if (repo_index_has_changes(the_repository, NULL, &sb)) { | |
1698 | write_state_bool(state, "dirtyindex", 1); | |
1699 | die(_("Dirty index: cannot apply patches (dirty: %s)"), sb.buf); | |
1700 | } | |
1701 | ||
1702 | strbuf_release(&sb); | |
1703 | ||
1704 | while (state->cur <= state->last) { | |
1705 | const char *mail = am_path(state, msgnum(state)); | |
1706 | int apply_status; | |
1707 | ||
1708 | reset_ident_date(); | |
1709 | ||
1710 | if (!file_exists(mail)) | |
1711 | goto next; | |
1712 | ||
1713 | if (resume) { | |
1714 | validate_resume_state(state); | |
1715 | } else { | |
1716 | int skip; | |
1717 | ||
1718 | if (state->rebasing) | |
1719 | skip = parse_mail_rebase(state, mail); | |
1720 | else | |
1721 | skip = parse_mail(state, mail); | |
1722 | ||
1723 | if (skip) | |
1724 | goto next; /* mail should be skipped */ | |
1725 | ||
1726 | if (state->signoff) | |
1727 | am_append_signoff(state); | |
1728 | ||
1729 | write_author_script(state); | |
1730 | write_commit_msg(state); | |
1731 | } | |
1732 | ||
1733 | if (state->interactive && do_interactive(state)) | |
1734 | goto next; | |
1735 | ||
1736 | if (run_applypatch_msg_hook(state)) | |
1737 | exit(1); | |
1738 | ||
1739 | say(state, stdout, _("Applying: %.*s"), linelen(state->msg), state->msg); | |
1740 | ||
1741 | apply_status = run_apply(state, NULL); | |
1742 | ||
1743 | if (apply_status && state->threeway) { | |
1744 | struct strbuf sb = STRBUF_INIT; | |
1745 | ||
1746 | strbuf_addstr(&sb, am_path(state, "patch-merge-index")); | |
1747 | apply_status = fall_back_threeway(state, sb.buf); | |
1748 | strbuf_release(&sb); | |
1749 | ||
1750 | /* | |
1751 | * Applying the patch to an earlier tree and merging | |
1752 | * the result may have produced the same tree as ours. | |
1753 | */ | |
1754 | if (!apply_status && | |
1755 | !repo_index_has_changes(the_repository, NULL, NULL)) { | |
1756 | say(state, stdout, _("No changes -- Patch already applied.")); | |
1757 | goto next; | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | if (apply_status) { | |
1762 | printf_ln(_("Patch failed at %s %.*s"), msgnum(state), | |
1763 | linelen(state->msg), state->msg); | |
1764 | ||
1765 | if (advice_amworkdir) | |
1766 | advise(_("Use 'git am --show-current-patch' to see the failed patch")); | |
1767 | ||
1768 | die_user_resolve(state); | |
1769 | } | |
1770 | ||
1771 | do_commit(state); | |
1772 | ||
1773 | next: | |
1774 | am_next(state); | |
1775 | ||
1776 | if (resume) | |
1777 | am_load(state); | |
1778 | resume = 0; | |
1779 | } | |
1780 | ||
1781 | if (!is_empty_or_missing_file(am_path(state, "rewritten"))) { | |
1782 | assert(state->rebasing); | |
1783 | copy_notes_for_rebase(state); | |
1784 | run_post_rewrite_hook(state); | |
1785 | } | |
1786 | ||
1787 | /* | |
1788 | * In rebasing mode, it's up to the caller to take care of | |
1789 | * housekeeping. | |
1790 | */ | |
1791 | if (!state->rebasing) { | |
1792 | am_destroy(state); | |
1793 | close_object_store(the_repository->objects); | |
1794 | run_command_v_opt(argv_gc_auto, RUN_GIT_CMD); | |
1795 | } | |
1796 | } | |
1797 | ||
1798 | /** | |
1799 | * Resume the current am session after patch application failure. The user did | |
1800 | * all the hard work, and we do not have to do any patch application. Just | |
1801 | * trust and commit what the user has in the index and working tree. | |
1802 | */ | |
1803 | static void am_resolve(struct am_state *state) | |
1804 | { | |
1805 | validate_resume_state(state); | |
1806 | ||
1807 | say(state, stdout, _("Applying: %.*s"), linelen(state->msg), state->msg); | |
1808 | ||
1809 | if (!repo_index_has_changes(the_repository, NULL, NULL)) { | |
1810 | printf_ln(_("No changes - did you forget to use 'git add'?\n" | |
1811 | "If there is nothing left to stage, chances are that something else\n" | |
1812 | "already introduced the same changes; you might want to skip this patch.")); | |
1813 | die_user_resolve(state); | |
1814 | } | |
1815 | ||
1816 | if (unmerged_cache()) { | |
1817 | printf_ln(_("You still have unmerged paths in your index.\n" | |
1818 | "You should 'git add' each file with resolved conflicts to mark them as such.\n" | |
1819 | "You might run `git rm` on a file to accept \"deleted by them\" for it.")); | |
1820 | die_user_resolve(state); | |
1821 | } | |
1822 | ||
1823 | if (state->interactive) { | |
1824 | write_index_patch(state); | |
1825 | if (do_interactive(state)) | |
1826 | goto next; | |
1827 | } | |
1828 | ||
1829 | repo_rerere(the_repository, 0); | |
1830 | ||
1831 | do_commit(state); | |
1832 | ||
1833 | next: | |
1834 | am_next(state); | |
1835 | am_load(state); | |
1836 | am_run(state, 0); | |
1837 | } | |
1838 | ||
1839 | /** | |
1840 | * Performs a checkout fast-forward from `head` to `remote`. If `reset` is | |
1841 | * true, any unmerged entries will be discarded. Returns 0 on success, -1 on | |
1842 | * failure. | |
1843 | */ | |
1844 | static int fast_forward_to(struct tree *head, struct tree *remote, int reset) | |
1845 | { | |
1846 | struct lock_file lock_file = LOCK_INIT; | |
1847 | struct unpack_trees_options opts; | |
1848 | struct tree_desc t[2]; | |
1849 | ||
1850 | if (parse_tree(head) || parse_tree(remote)) | |
1851 | return -1; | |
1852 | ||
1853 | hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); | |
1854 | ||
1855 | refresh_cache(REFRESH_QUIET); | |
1856 | ||
1857 | memset(&opts, 0, sizeof(opts)); | |
1858 | opts.head_idx = 1; | |
1859 | opts.src_index = &the_index; | |
1860 | opts.dst_index = &the_index; | |
1861 | opts.update = 1; | |
1862 | opts.merge = 1; | |
1863 | opts.reset = reset; | |
1864 | opts.fn = twoway_merge; | |
1865 | init_tree_desc(&t[0], head->buffer, head->size); | |
1866 | init_tree_desc(&t[1], remote->buffer, remote->size); | |
1867 | ||
1868 | if (unpack_trees(2, t, &opts)) { | |
1869 | rollback_lock_file(&lock_file); | |
1870 | return -1; | |
1871 | } | |
1872 | ||
1873 | if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) | |
1874 | die(_("unable to write new index file")); | |
1875 | ||
1876 | return 0; | |
1877 | } | |
1878 | ||
1879 | /** | |
1880 | * Merges a tree into the index. The index's stat info will take precedence | |
1881 | * over the merged tree's. Returns 0 on success, -1 on failure. | |
1882 | */ | |
1883 | static int merge_tree(struct tree *tree) | |
1884 | { | |
1885 | struct lock_file lock_file = LOCK_INIT; | |
1886 | struct unpack_trees_options opts; | |
1887 | struct tree_desc t[1]; | |
1888 | ||
1889 | if (parse_tree(tree)) | |
1890 | return -1; | |
1891 | ||
1892 | hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); | |
1893 | ||
1894 | memset(&opts, 0, sizeof(opts)); | |
1895 | opts.head_idx = 1; | |
1896 | opts.src_index = &the_index; | |
1897 | opts.dst_index = &the_index; | |
1898 | opts.merge = 1; | |
1899 | opts.fn = oneway_merge; | |
1900 | init_tree_desc(&t[0], tree->buffer, tree->size); | |
1901 | ||
1902 | if (unpack_trees(1, t, &opts)) { | |
1903 | rollback_lock_file(&lock_file); | |
1904 | return -1; | |
1905 | } | |
1906 | ||
1907 | if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) | |
1908 | die(_("unable to write new index file")); | |
1909 | ||
1910 | return 0; | |
1911 | } | |
1912 | ||
1913 | /** | |
1914 | * Clean the index without touching entries that are not modified between | |
1915 | * `head` and `remote`. | |
1916 | */ | |
1917 | static int clean_index(const struct object_id *head, const struct object_id *remote) | |
1918 | { | |
1919 | struct tree *head_tree, *remote_tree, *index_tree; | |
1920 | struct object_id index; | |
1921 | ||
1922 | head_tree = parse_tree_indirect(head); | |
1923 | if (!head_tree) | |
1924 | return error(_("Could not parse object '%s'."), oid_to_hex(head)); | |
1925 | ||
1926 | remote_tree = parse_tree_indirect(remote); | |
1927 | if (!remote_tree) | |
1928 | return error(_("Could not parse object '%s'."), oid_to_hex(remote)); | |
1929 | ||
1930 | read_cache_unmerged(); | |
1931 | ||
1932 | if (fast_forward_to(head_tree, head_tree, 1)) | |
1933 | return -1; | |
1934 | ||
1935 | if (write_cache_as_tree(&index, 0, NULL)) | |
1936 | return -1; | |
1937 | ||
1938 | index_tree = parse_tree_indirect(&index); | |
1939 | if (!index_tree) | |
1940 | return error(_("Could not parse object '%s'."), oid_to_hex(&index)); | |
1941 | ||
1942 | if (fast_forward_to(index_tree, remote_tree, 0)) | |
1943 | return -1; | |
1944 | ||
1945 | if (merge_tree(remote_tree)) | |
1946 | return -1; | |
1947 | ||
1948 | remove_branch_state(the_repository, 0); | |
1949 | ||
1950 | return 0; | |
1951 | } | |
1952 | ||
1953 | /** | |
1954 | * Resets rerere's merge resolution metadata. | |
1955 | */ | |
1956 | static void am_rerere_clear(void) | |
1957 | { | |
1958 | struct string_list merge_rr = STRING_LIST_INIT_DUP; | |
1959 | rerere_clear(the_repository, &merge_rr); | |
1960 | string_list_clear(&merge_rr, 1); | |
1961 | } | |
1962 | ||
1963 | /** | |
1964 | * Resume the current am session by skipping the current patch. | |
1965 | */ | |
1966 | static void am_skip(struct am_state *state) | |
1967 | { | |
1968 | struct object_id head; | |
1969 | ||
1970 | am_rerere_clear(); | |
1971 | ||
1972 | if (get_oid("HEAD", &head)) | |
1973 | oidcpy(&head, the_hash_algo->empty_tree); | |
1974 | ||
1975 | if (clean_index(&head, &head)) | |
1976 | die(_("failed to clean index")); | |
1977 | ||
1978 | if (state->rebasing) { | |
1979 | FILE *fp = xfopen(am_path(state, "rewritten"), "a"); | |
1980 | ||
1981 | assert(!is_null_oid(&state->orig_commit)); | |
1982 | fprintf(fp, "%s ", oid_to_hex(&state->orig_commit)); | |
1983 | fprintf(fp, "%s\n", oid_to_hex(&head)); | |
1984 | fclose(fp); | |
1985 | } | |
1986 | ||
1987 | am_next(state); | |
1988 | am_load(state); | |
1989 | am_run(state, 0); | |
1990 | } | |
1991 | ||
1992 | /** | |
1993 | * Returns true if it is safe to reset HEAD to the ORIG_HEAD, false otherwise. | |
1994 | * | |
1995 | * It is not safe to reset HEAD when: | |
1996 | * 1. git-am previously failed because the index was dirty. | |
1997 | * 2. HEAD has moved since git-am previously failed. | |
1998 | */ | |
1999 | static int safe_to_abort(const struct am_state *state) | |
2000 | { | |
2001 | struct strbuf sb = STRBUF_INIT; | |
2002 | struct object_id abort_safety, head; | |
2003 | ||
2004 | if (file_exists(am_path(state, "dirtyindex"))) | |
2005 | return 0; | |
2006 | ||
2007 | if (read_state_file(&sb, state, "abort-safety", 1) > 0) { | |
2008 | if (get_oid_hex(sb.buf, &abort_safety)) | |
2009 | die(_("could not parse %s"), am_path(state, "abort-safety")); | |
2010 | } else | |
2011 | oidclr(&abort_safety); | |
2012 | strbuf_release(&sb); | |
2013 | ||
2014 | if (get_oid("HEAD", &head)) | |
2015 | oidclr(&head); | |
2016 | ||
2017 | if (oideq(&head, &abort_safety)) | |
2018 | return 1; | |
2019 | ||
2020 | warning(_("You seem to have moved HEAD since the last 'am' failure.\n" | |
2021 | "Not rewinding to ORIG_HEAD")); | |
2022 | ||
2023 | return 0; | |
2024 | } | |
2025 | ||
2026 | /** | |
2027 | * Aborts the current am session if it is safe to do so. | |
2028 | */ | |
2029 | static void am_abort(struct am_state *state) | |
2030 | { | |
2031 | struct object_id curr_head, orig_head; | |
2032 | int has_curr_head, has_orig_head; | |
2033 | char *curr_branch; | |
2034 | ||
2035 | if (!safe_to_abort(state)) { | |
2036 | am_destroy(state); | |
2037 | return; | |
2038 | } | |
2039 | ||
2040 | am_rerere_clear(); | |
2041 | ||
2042 | curr_branch = resolve_refdup("HEAD", 0, &curr_head, NULL); | |
2043 | has_curr_head = curr_branch && !is_null_oid(&curr_head); | |
2044 | if (!has_curr_head) | |
2045 | oidcpy(&curr_head, the_hash_algo->empty_tree); | |
2046 | ||
2047 | has_orig_head = !get_oid("ORIG_HEAD", &orig_head); | |
2048 | if (!has_orig_head) | |
2049 | oidcpy(&orig_head, the_hash_algo->empty_tree); | |
2050 | ||
2051 | clean_index(&curr_head, &orig_head); | |
2052 | ||
2053 | if (has_orig_head) | |
2054 | update_ref("am --abort", "HEAD", &orig_head, | |
2055 | has_curr_head ? &curr_head : NULL, 0, | |
2056 | UPDATE_REFS_DIE_ON_ERR); | |
2057 | else if (curr_branch) | |
2058 | delete_ref(NULL, curr_branch, NULL, REF_NO_DEREF); | |
2059 | ||
2060 | free(curr_branch); | |
2061 | am_destroy(state); | |
2062 | } | |
2063 | ||
2064 | static int show_patch(struct am_state *state) | |
2065 | { | |
2066 | struct strbuf sb = STRBUF_INIT; | |
2067 | const char *patch_path; | |
2068 | int len; | |
2069 | ||
2070 | if (!is_null_oid(&state->orig_commit)) { | |
2071 | const char *av[4] = { "show", NULL, "--", NULL }; | |
2072 | char *new_oid_str; | |
2073 | int ret; | |
2074 | ||
2075 | av[1] = new_oid_str = xstrdup(oid_to_hex(&state->orig_commit)); | |
2076 | ret = run_command_v_opt(av, RUN_GIT_CMD); | |
2077 | free(new_oid_str); | |
2078 | return ret; | |
2079 | } | |
2080 | ||
2081 | patch_path = am_path(state, msgnum(state)); | |
2082 | len = strbuf_read_file(&sb, patch_path, 0); | |
2083 | if (len < 0) | |
2084 | die_errno(_("failed to read '%s'"), patch_path); | |
2085 | ||
2086 | setup_pager(); | |
2087 | write_in_full(1, sb.buf, sb.len); | |
2088 | strbuf_release(&sb); | |
2089 | return 0; | |
2090 | } | |
2091 | ||
2092 | /** | |
2093 | * parse_options() callback that validates and sets opt->value to the | |
2094 | * PATCH_FORMAT_* enum value corresponding to `arg`. | |
2095 | */ | |
2096 | static int parse_opt_patchformat(const struct option *opt, const char *arg, int unset) | |
2097 | { | |
2098 | int *opt_value = opt->value; | |
2099 | ||
2100 | if (unset) | |
2101 | *opt_value = PATCH_FORMAT_UNKNOWN; | |
2102 | else if (!strcmp(arg, "mbox")) | |
2103 | *opt_value = PATCH_FORMAT_MBOX; | |
2104 | else if (!strcmp(arg, "stgit")) | |
2105 | *opt_value = PATCH_FORMAT_STGIT; | |
2106 | else if (!strcmp(arg, "stgit-series")) | |
2107 | *opt_value = PATCH_FORMAT_STGIT_SERIES; | |
2108 | else if (!strcmp(arg, "hg")) | |
2109 | *opt_value = PATCH_FORMAT_HG; | |
2110 | else if (!strcmp(arg, "mboxrd")) | |
2111 | *opt_value = PATCH_FORMAT_MBOXRD; | |
2112 | /* | |
2113 | * Please update $__git_patchformat in git-completion.bash | |
2114 | * when you add new options | |
2115 | */ | |
2116 | else | |
2117 | return error(_("Invalid value for --patch-format: %s"), arg); | |
2118 | return 0; | |
2119 | } | |
2120 | ||
2121 | enum resume_mode { | |
2122 | RESUME_FALSE = 0, | |
2123 | RESUME_APPLY, | |
2124 | RESUME_RESOLVED, | |
2125 | RESUME_SKIP, | |
2126 | RESUME_ABORT, | |
2127 | RESUME_QUIT, | |
2128 | RESUME_SHOW_PATCH | |
2129 | }; | |
2130 | ||
2131 | static int git_am_config(const char *k, const char *v, void *cb) | |
2132 | { | |
2133 | int status; | |
2134 | ||
2135 | status = git_gpg_config(k, v, NULL); | |
2136 | if (status) | |
2137 | return status; | |
2138 | ||
2139 | return git_default_config(k, v, NULL); | |
2140 | } | |
2141 | ||
2142 | int cmd_am(int argc, const char **argv, const char *prefix) | |
2143 | { | |
2144 | struct am_state state; | |
2145 | int binary = -1; | |
2146 | int keep_cr = -1; | |
2147 | int patch_format = PATCH_FORMAT_UNKNOWN; | |
2148 | enum resume_mode resume = RESUME_FALSE; | |
2149 | int in_progress; | |
2150 | int ret = 0; | |
2151 | ||
2152 | const char * const usage[] = { | |
2153 | N_("git am [<options>] [(<mbox> | <Maildir>)...]"), | |
2154 | N_("git am [<options>] (--continue | --skip | --abort)"), | |
2155 | NULL | |
2156 | }; | |
2157 | ||
2158 | struct option options[] = { | |
2159 | OPT_BOOL('i', "interactive", &state.interactive, | |
2160 | N_("run interactively")), | |
2161 | OPT_HIDDEN_BOOL('b', "binary", &binary, | |
2162 | N_("historical option -- no-op")), | |
2163 | OPT_BOOL('3', "3way", &state.threeway, | |
2164 | N_("allow fall back on 3way merging if needed")), | |
2165 | OPT__QUIET(&state.quiet, N_("be quiet")), | |
2166 | OPT_SET_INT('s', "signoff", &state.signoff, | |
2167 | N_("add a Signed-off-by line to the commit message"), | |
2168 | SIGNOFF_EXPLICIT), | |
2169 | OPT_BOOL('u', "utf8", &state.utf8, | |
2170 | N_("recode into utf8 (default)")), | |
2171 | OPT_SET_INT('k', "keep", &state.keep, | |
2172 | N_("pass -k flag to git-mailinfo"), KEEP_TRUE), | |
2173 | OPT_SET_INT(0, "keep-non-patch", &state.keep, | |
2174 | N_("pass -b flag to git-mailinfo"), KEEP_NON_PATCH), | |
2175 | OPT_BOOL('m', "message-id", &state.message_id, | |
2176 | N_("pass -m flag to git-mailinfo")), | |
2177 | OPT_SET_INT_F(0, "keep-cr", &keep_cr, | |
2178 | N_("pass --keep-cr flag to git-mailsplit for mbox format"), | |
2179 | 1, PARSE_OPT_NONEG), | |
2180 | OPT_SET_INT_F(0, "no-keep-cr", &keep_cr, | |
2181 | N_("do not pass --keep-cr flag to git-mailsplit independent of am.keepcr"), | |
2182 | 0, PARSE_OPT_NONEG), | |
2183 | OPT_BOOL('c', "scissors", &state.scissors, | |
2184 | N_("strip everything before a scissors line")), | |
2185 | OPT_PASSTHRU_ARGV(0, "whitespace", &state.git_apply_opts, N_("action"), | |
2186 | N_("pass it through git-apply"), | |
2187 | 0), | |
2188 | OPT_PASSTHRU_ARGV(0, "ignore-space-change", &state.git_apply_opts, NULL, | |
2189 | N_("pass it through git-apply"), | |
2190 | PARSE_OPT_NOARG), | |
2191 | OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &state.git_apply_opts, NULL, | |
2192 | N_("pass it through git-apply"), | |
2193 | PARSE_OPT_NOARG), | |
2194 | OPT_PASSTHRU_ARGV(0, "directory", &state.git_apply_opts, N_("root"), | |
2195 | N_("pass it through git-apply"), | |
2196 | 0), | |
2197 | OPT_PASSTHRU_ARGV(0, "exclude", &state.git_apply_opts, N_("path"), | |
2198 | N_("pass it through git-apply"), | |
2199 | 0), | |
2200 | OPT_PASSTHRU_ARGV(0, "include", &state.git_apply_opts, N_("path"), | |
2201 | N_("pass it through git-apply"), | |
2202 | 0), | |
2203 | OPT_PASSTHRU_ARGV('C', NULL, &state.git_apply_opts, N_("n"), | |
2204 | N_("pass it through git-apply"), | |
2205 | 0), | |
2206 | OPT_PASSTHRU_ARGV('p', NULL, &state.git_apply_opts, N_("num"), | |
2207 | N_("pass it through git-apply"), | |
2208 | 0), | |
2209 | OPT_CALLBACK(0, "patch-format", &patch_format, N_("format"), | |
2210 | N_("format the patch(es) are in"), | |
2211 | parse_opt_patchformat), | |
2212 | OPT_PASSTHRU_ARGV(0, "reject", &state.git_apply_opts, NULL, | |
2213 | N_("pass it through git-apply"), | |
2214 | PARSE_OPT_NOARG), | |
2215 | OPT_STRING(0, "resolvemsg", &state.resolvemsg, NULL, | |
2216 | N_("override error message when patch failure occurs")), | |
2217 | OPT_CMDMODE(0, "continue", &resume, | |
2218 | N_("continue applying patches after resolving a conflict"), | |
2219 | RESUME_RESOLVED), | |
2220 | OPT_CMDMODE('r', "resolved", &resume, | |
2221 | N_("synonyms for --continue"), | |
2222 | RESUME_RESOLVED), | |
2223 | OPT_CMDMODE(0, "skip", &resume, | |
2224 | N_("skip the current patch"), | |
2225 | RESUME_SKIP), | |
2226 | OPT_CMDMODE(0, "abort", &resume, | |
2227 | N_("restore the original branch and abort the patching operation."), | |
2228 | RESUME_ABORT), | |
2229 | OPT_CMDMODE(0, "quit", &resume, | |
2230 | N_("abort the patching operation but keep HEAD where it is."), | |
2231 | RESUME_QUIT), | |
2232 | OPT_CMDMODE(0, "show-current-patch", &resume, | |
2233 | N_("show the patch being applied."), | |
2234 | RESUME_SHOW_PATCH), | |
2235 | OPT_BOOL(0, "committer-date-is-author-date", | |
2236 | &state.committer_date_is_author_date, | |
2237 | N_("lie about committer date")), | |
2238 | OPT_BOOL(0, "ignore-date", &state.ignore_date, | |
2239 | N_("use current timestamp for author date")), | |
2240 | OPT_RERERE_AUTOUPDATE(&state.allow_rerere_autoupdate), | |
2241 | { OPTION_STRING, 'S', "gpg-sign", &state.sign_commit, N_("key-id"), | |
2242 | N_("GPG-sign commits"), | |
2243 | PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, | |
2244 | OPT_HIDDEN_BOOL(0, "rebasing", &state.rebasing, | |
2245 | N_("(internal use for git-rebase)")), | |
2246 | OPT_END() | |
2247 | }; | |
2248 | ||
2249 | if (argc == 2 && !strcmp(argv[1], "-h")) | |
2250 | usage_with_options(usage, options); | |
2251 | ||
2252 | git_config(git_am_config, NULL); | |
2253 | ||
2254 | am_state_init(&state); | |
2255 | ||
2256 | in_progress = am_in_progress(&state); | |
2257 | if (in_progress) | |
2258 | am_load(&state); | |
2259 | ||
2260 | argc = parse_options(argc, argv, prefix, options, usage, 0); | |
2261 | ||
2262 | if (binary >= 0) | |
2263 | fprintf_ln(stderr, _("The -b/--binary option has been a no-op for long time, and\n" | |
2264 | "it will be removed. Please do not use it anymore.")); | |
2265 | ||
2266 | /* Ensure a valid committer ident can be constructed */ | |
2267 | git_committer_info(IDENT_STRICT); | |
2268 | ||
2269 | if (repo_read_index_preload(the_repository, NULL, 0) < 0) | |
2270 | die(_("failed to read the index")); | |
2271 | ||
2272 | if (in_progress) { | |
2273 | /* | |
2274 | * Catch user error to feed us patches when there is a session | |
2275 | * in progress: | |
2276 | * | |
2277 | * 1. mbox path(s) are provided on the command-line. | |
2278 | * 2. stdin is not a tty: the user is trying to feed us a patch | |
2279 | * from standard input. This is somewhat unreliable -- stdin | |
2280 | * could be /dev/null for example and the caller did not | |
2281 | * intend to feed us a patch but wanted to continue | |
2282 | * unattended. | |
2283 | */ | |
2284 | if (argc || (resume == RESUME_FALSE && !isatty(0))) | |
2285 | die(_("previous rebase directory %s still exists but mbox given."), | |
2286 | state.dir); | |
2287 | ||
2288 | if (resume == RESUME_FALSE) | |
2289 | resume = RESUME_APPLY; | |
2290 | ||
2291 | if (state.signoff == SIGNOFF_EXPLICIT) | |
2292 | am_append_signoff(&state); | |
2293 | } else { | |
2294 | struct argv_array paths = ARGV_ARRAY_INIT; | |
2295 | int i; | |
2296 | ||
2297 | /* | |
2298 | * Handle stray state directory in the independent-run case. In | |
2299 | * the --rebasing case, it is up to the caller to take care of | |
2300 | * stray directories. | |
2301 | */ | |
2302 | if (file_exists(state.dir) && !state.rebasing) { | |
2303 | if (resume == RESUME_ABORT || resume == RESUME_QUIT) { | |
2304 | am_destroy(&state); | |
2305 | am_state_release(&state); | |
2306 | return 0; | |
2307 | } | |
2308 | ||
2309 | die(_("Stray %s directory found.\n" | |
2310 | "Use \"git am --abort\" to remove it."), | |
2311 | state.dir); | |
2312 | } | |
2313 | ||
2314 | if (resume) | |
2315 | die(_("Resolve operation not in progress, we are not resuming.")); | |
2316 | ||
2317 | for (i = 0; i < argc; i++) { | |
2318 | if (is_absolute_path(argv[i]) || !prefix) | |
2319 | argv_array_push(&paths, argv[i]); | |
2320 | else | |
2321 | argv_array_push(&paths, mkpath("%s/%s", prefix, argv[i])); | |
2322 | } | |
2323 | ||
2324 | if (state.interactive && !paths.argc) | |
2325 | die(_("interactive mode requires patches on the command line")); | |
2326 | ||
2327 | am_setup(&state, patch_format, paths.argv, keep_cr); | |
2328 | ||
2329 | argv_array_clear(&paths); | |
2330 | } | |
2331 | ||
2332 | switch (resume) { | |
2333 | case RESUME_FALSE: | |
2334 | am_run(&state, 0); | |
2335 | break; | |
2336 | case RESUME_APPLY: | |
2337 | am_run(&state, 1); | |
2338 | break; | |
2339 | case RESUME_RESOLVED: | |
2340 | am_resolve(&state); | |
2341 | break; | |
2342 | case RESUME_SKIP: | |
2343 | am_skip(&state); | |
2344 | break; | |
2345 | case RESUME_ABORT: | |
2346 | am_abort(&state); | |
2347 | break; | |
2348 | case RESUME_QUIT: | |
2349 | am_rerere_clear(); | |
2350 | am_destroy(&state); | |
2351 | break; | |
2352 | case RESUME_SHOW_PATCH: | |
2353 | ret = show_patch(&state); | |
2354 | break; | |
2355 | default: | |
2356 | BUG("invalid resume value"); | |
2357 | } | |
2358 | ||
2359 | am_state_release(&state); | |
2360 | ||
2361 | return ret; | |
2362 | } |