1/*
2 * Builtin "git commit"
3 *
4 * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
5 * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
6 */
7#include "cache.h"
9#include "cache-tree.h"
10#include "color.h"
11#include "dir.h"
12#include "builtin.h"
13#include "diff.h"
14#include "diffcore.h"
15#include "commit.h"
16#include "revision.h"
17#include "wt-status.h"
18#include "run-command.h"
19#include "refs.h"
20#include "log-tree.h"
21#include "strbuf.h"
22#include "utf8.h"
23#include "parse-options.h"
24#include "string-list.h"
25#include "rerere.h"
26#include "unpack-trees.h"
27#include "quote.h"
28#include "submodule.h"
29#include "gpg-interface.h"
30#include "column.h"
31#include "sequencer.h"
32static const char * const builtin_commit_usage[] = {
34 N_("git commit [options] [--] <pathspec>..."),
35 NULL
36};
37static const char * const builtin_status_usage[] = {
39 N_("git status [options] [--] <pathspec>..."),
40 NULL
41};
42static const char implicit_ident_advice[] =
44N_("Your name and email address were configured automatically based\n"
45"on your username and hostname. Please check that they are accurate.\n"
46"You can suppress this message by setting them explicitly:\n"
47"\n"
48" git config --global user.name \"Your Name\"\n"
49" git config --global user.email you@example.com\n"
50"\n"
51"After doing this, you may fix the identity used for this commit with:\n"
52"\n"
53" git commit --amend --reset-author\n");
54static const char empty_amend_advice[] =
56N_("You asked to amend the most recent commit, but doing so would make\n"
57"it empty. You can repeat your command with --allow-empty, or you can\n"
58"remove the commit entirely with \"git reset HEAD^\".\n");
59static const char empty_cherry_pick_advice[] =
61N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\n"
62"If you wish to commit it anyway, use:\n"
63"\n"
64" git commit --allow-empty\n"
65"\n"
66"Otherwise, please use 'git reset'\n");
67static const char *use_message_buffer;
69static const char commit_editmsg[] = "COMMIT_EDITMSG";
70static struct lock_file index_lock; /* real index */
71static struct lock_file false_lock; /* used only for partial commits */
72static enum {
73 COMMIT_AS_IS = 1,
74 COMMIT_NORMAL,
75 COMMIT_PARTIAL
76} commit_style;
77static const char *logfile, *force_author;
79static const char *template_file;
80/*
81 * The _message variables are commit names from which to take
82 * the commit message and/or authorship.
83 */
84static const char *author_message, *author_message_buffer;
85static char *edit_message, *use_message;
86static char *fixup_message, *squash_message;
87static int all, also, interactive, patch_interactive, only, amend, signoff;
88static int edit_flag = -1; /* unspecified */
89static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
90static int no_post_rewrite, allow_empty_message;
91static char *untracked_files_arg, *force_date, *ignore_submodule_arg;
92static char *sign_commit;
93/*
95 * The default commit message cleanup mode will remove the lines
96 * beginning with # (shell comments) and leading and trailing
97 * whitespaces (empty lines or containing only whitespaces)
98 * if editor is used, and only the whitespaces if the message
99 * is specified explicitly.
100 */
101static enum {
102 CLEANUP_SPACE,
103 CLEANUP_NONE,
104 CLEANUP_ALL
105} cleanup_mode;
106static const char *cleanup_arg;
107static enum commit_whence whence;
109static int use_editor = 1, include_status = 1;
110static int show_ignored_in_status;
111static const char *only_include_assumed;
112static struct strbuf message = STRBUF_INIT;
113static enum {
115 STATUS_FORMAT_NONE = 0,
116 STATUS_FORMAT_LONG,
117 STATUS_FORMAT_SHORT,
118 STATUS_FORMAT_PORCELAIN
119} status_format;
120static int opt_parse_m(const struct option *opt, const char *arg, int unset)
122{
123 struct strbuf *buf = opt->value;
124 if (unset)
125 strbuf_setlen(buf, 0);
126 else {
127 if (buf->len)
128 strbuf_addch(buf, '\n');
129 strbuf_addstr(buf, arg);
130 strbuf_complete_line(buf);
131 }
132 return 0;
133}
134static void determine_whence(struct wt_status *s)
136{
137 if (file_exists(git_path("MERGE_HEAD")))
138 whence = FROM_MERGE;
139 else if (file_exists(git_path("CHERRY_PICK_HEAD")))
140 whence = FROM_CHERRY_PICK;
141 else
142 whence = FROM_COMMIT;
143 if (s)
144 s->whence = whence;
145}
146static void rollback_index_files(void)
148{
149 switch (commit_style) {
150 case COMMIT_AS_IS:
151 break; /* nothing to do */
152 case COMMIT_NORMAL:
153 rollback_lock_file(&index_lock);
154 break;
155 case COMMIT_PARTIAL:
156 rollback_lock_file(&index_lock);
157 rollback_lock_file(&false_lock);
158 break;
159 }
160}
161static int commit_index_files(void)
163{
164 int err = 0;
165 switch (commit_style) {
167 case COMMIT_AS_IS:
168 break; /* nothing to do */
169 case COMMIT_NORMAL:
170 err = commit_lock_file(&index_lock);
171 break;
172 case COMMIT_PARTIAL:
173 err = commit_lock_file(&index_lock);
174 rollback_lock_file(&false_lock);
175 break;
176 }
177 return err;
179}
180/*
182 * Take a union of paths in the index and the named tree (typically, "HEAD"),
183 * and return the paths that match the given pattern in list.
184 */
185static int list_paths(struct string_list *list, const char *with_tree,
186 const char *prefix, const char **pattern)
187{
188 int i;
189 char *m;
190 if (!pattern)
192 return 0;
193 for (i = 0; pattern[i]; i++)
195 ;
196 m = xcalloc(1, i);
197 if (with_tree) {
199 char *max_prefix = common_prefix(pattern);
200 overlay_tree_on_cache(with_tree, max_prefix ? max_prefix : prefix);
201 free(max_prefix);
202 }
203 for (i = 0; i < active_nr; i++) {
205 struct cache_entry *ce = active_cache[i];
206 struct string_list_item *item;
207 if (ce->ce_flags & CE_UPDATE)
209 continue;
210 if (!match_pathspec(pattern, ce->name, ce_namelen(ce), 0, m))
211 continue;
212 item = string_list_insert(list, ce->name);
213 if (ce_skip_worktree(ce))
214 item->util = item; /* better a valid pointer than a fake one */
215 }
216 return report_path_error(m, pattern, prefix);
218}
219static void add_remove_files(struct string_list *list)
221{
222 int i;
223 for (i = 0; i < list->nr; i++) {
224 struct stat st;
225 struct string_list_item *p = &(list->items[i]);
226 /* p->util is skip-worktree */
228 if (p->util)
229 continue;
230 if (!lstat(p->string, &st)) {
232 if (add_to_cache(p->string, &st, 0))
233 die(_("updating files failed"));
234 } else
235 remove_file_from_cache(p->string);
236 }
237}
238static void create_base_index(const struct commit *current_head)
240{
241 struct tree *tree;
242 struct unpack_trees_options opts;
243 struct tree_desc t;
244 if (!current_head) {
246 discard_cache();
247 return;
248 }
249 memset(&opts, 0, sizeof(opts));
251 opts.head_idx = 1;
252 opts.index_only = 1;
253 opts.merge = 1;
254 opts.src_index = &the_index;
255 opts.dst_index = &the_index;
256 opts.fn = oneway_merge;
258 tree = parse_tree_indirect(current_head->object.sha1);
259 if (!tree)
260 die(_("failed to unpack HEAD tree object"));
261 parse_tree(tree);
262 init_tree_desc(&t, tree->buffer, tree->size);
263 if (unpack_trees(1, &t, &opts))
264 exit(128); /* We've already reported the error, finish dying */
265}
266static void refresh_cache_or_die(int refresh_flags)
268{
269 /*
270 * refresh_flags contains REFRESH_QUIET, so the only errors
271 * are for unmerged entries.
272 */
273 if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
274 die_resolve_conflict("commit");
275}
276static char *prepare_index(int argc, const char **argv, const char *prefix,
278 const struct commit *current_head, int is_status)
279{
280 int fd;
281 struct string_list partial;
282 const char **pathspec = NULL;
283 char *old_index_env = NULL;
284 int refresh_flags = REFRESH_QUIET;
285 if (is_status)
287 refresh_flags |= REFRESH_UNMERGED;
288 if (*argv)
290 pathspec = get_pathspec(prefix, argv);
291 if (read_cache_preload(pathspec) < 0)
293 die(_("index file corrupt"));
294 if (interactive) {
296 fd = hold_locked_index(&index_lock, 1);
297 refresh_cache_or_die(refresh_flags);
299 if (write_cache(fd, active_cache, active_nr) ||
301 close_lock_file(&index_lock))
302 die(_("unable to create temporary index"));
303 old_index_env = getenv(INDEX_ENVIRONMENT);
305 setenv(INDEX_ENVIRONMENT, index_lock.filename, 1);
306 if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
308 die(_("interactive add failed"));
309 if (old_index_env && *old_index_env)
311 setenv(INDEX_ENVIRONMENT, old_index_env, 1);
312 else
313 unsetenv(INDEX_ENVIRONMENT);
314 discard_cache();
316 read_cache_from(index_lock.filename);
317 commit_style = COMMIT_NORMAL;
319 return index_lock.filename;
320 }
321 /*
323 * Non partial, non as-is commit.
324 *
325 * (1) get the real index;
326 * (2) update the_index as necessary;
327 * (3) write the_index out to the real index (still locked);
328 * (4) return the name of the locked index file.
329 *
330 * The caller should run hooks on the locked real index, and
331 * (A) if all goes well, commit the real index;
332 * (B) on failure, rollback the real index.
333 */
334 if (all || (also && pathspec && *pathspec)) {
335 fd = hold_locked_index(&index_lock, 1);
336 add_files_to_cache(also ? prefix : NULL, pathspec, 0);
337 refresh_cache_or_die(refresh_flags);
338 update_main_cache_tree(WRITE_TREE_SILENT);
339 if (write_cache(fd, active_cache, active_nr) ||
340 close_lock_file(&index_lock))
341 die(_("unable to write new_index file"));
342 commit_style = COMMIT_NORMAL;
343 return index_lock.filename;
344 }
345 /*
347 * As-is commit.
348 *
349 * (1) return the name of the real index file.
350 *
351 * The caller should run hooks on the real index,
352 * and create commit from the_index.
353 * We still need to refresh the index here.
354 */
355 if (!only && (!pathspec || !*pathspec)) {
356 fd = hold_locked_index(&index_lock, 1);
357 refresh_cache_or_die(refresh_flags);
358 if (active_cache_changed) {
359 update_main_cache_tree(WRITE_TREE_SILENT);
360 if (write_cache(fd, active_cache, active_nr) ||
361 commit_locked_index(&index_lock))
362 die(_("unable to write new_index file"));
363 } else {
364 rollback_lock_file(&index_lock);
365 }
366 commit_style = COMMIT_AS_IS;
367 return get_index_file();
368 }
369 /*
371 * A partial commit.
372 *
373 * (0) find the set of affected paths;
374 * (1) get lock on the real index file;
375 * (2) update the_index with the given paths;
376 * (3) write the_index out to the real index (still locked);
377 * (4) get lock on the false index file;
378 * (5) reset the_index from HEAD;
379 * (6) update the_index the same way as (2);
380 * (7) write the_index out to the false index file;
381 * (8) return the name of the false index file (still locked);
382 *
383 * The caller should run hooks on the locked false index, and
384 * create commit from it. Then
385 * (A) if all goes well, commit the real index;
386 * (B) on failure, rollback the real index;
387 * In either case, rollback the false index.
388 */
389 commit_style = COMMIT_PARTIAL;
390 if (whence != FROM_COMMIT) {
392 if (whence == FROM_MERGE)
393 die(_("cannot do a partial commit during a merge."));
394 else if (whence == FROM_CHERRY_PICK)
395 die(_("cannot do a partial commit during a cherry-pick."));
396 }
397 memset(&partial, 0, sizeof(partial));
399 partial.strdup_strings = 1;
400 if (list_paths(&partial, !current_head ? NULL : "HEAD", prefix, pathspec))
401 exit(1);
402 discard_cache();
404 if (read_cache() < 0)
405 die(_("cannot read the index"));
406 fd = hold_locked_index(&index_lock, 1);
408 add_remove_files(&partial);
409 refresh_cache(REFRESH_QUIET);
410 if (write_cache(fd, active_cache, active_nr) ||
411 close_lock_file(&index_lock))
412 die(_("unable to write new_index file"));
413 fd = hold_lock_file_for_update(&false_lock,
415 git_path("next-index-%"PRIuMAX,
416 (uintmax_t) getpid()),
417 LOCK_DIE_ON_ERROR);
418 create_base_index(current_head);
420 add_remove_files(&partial);
421 refresh_cache(REFRESH_QUIET);
422 if (write_cache(fd, active_cache, active_nr) ||
424 close_lock_file(&false_lock))
425 die(_("unable to write temporary index file"));
426 discard_cache();
428 read_cache_from(false_lock.filename);
429 return false_lock.filename;
431}
432static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
434 struct wt_status *s)
435{
436 unsigned char sha1[20];
437 if (s->relative_paths)
439 s->prefix = prefix;
440 if (amend) {
442 s->amend = 1;
443 s->reference = "HEAD^1";
444 }
445 s->verbose = verbose;
446 s->index_file = index_file;
447 s->fp = fp;
448 s->nowarn = nowarn;
449 s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
450 wt_status_collect(s);
452 switch (status_format) {
454 case STATUS_FORMAT_SHORT:
455 wt_shortstatus_print(s);
456 break;
457 case STATUS_FORMAT_PORCELAIN:
458 wt_porcelain_print(s);
459 break;
460 case STATUS_FORMAT_NONE:
461 case STATUS_FORMAT_LONG:
462 wt_status_print(s);
463 break;
464 }
465 return s->commitable;
467}
468static int is_a_merge(const struct commit *current_head)
470{
471 return !!(current_head->parents && current_head->parents->next);
472}
473static void export_one(const char *var, const char *s, const char *e, int hack)
475{
476 struct strbuf buf = STRBUF_INIT;
477 if (hack)
478 strbuf_addch(&buf, hack);
479 strbuf_addf(&buf, "%.*s", (int)(e - s), s);
480 setenv(var, buf.buf, 1);
481 strbuf_release(&buf);
482}
483static int sane_ident_split(struct ident_split *person)
485{
486 if (!person->name_begin || !person->name_end ||
487 person->name_begin == person->name_end)
488 return 0; /* no human readable name */
489 if (!person->mail_begin || !person->mail_end ||
490 person->mail_begin == person->mail_end)
491 return 0; /* no usable mail */
492 if (!person->date_begin || !person->date_end ||
493 !person->tz_begin || !person->tz_end)
494 return 0;
495 return 1;
496}
497static void determine_author_info(struct strbuf *author_ident)
499{
500 char *name, *email, *date;
501 struct ident_split author;
502 name = getenv("GIT_AUTHOR_NAME");
504 email = getenv("GIT_AUTHOR_EMAIL");
505 date = getenv("GIT_AUTHOR_DATE");
506 if (author_message) {
508 const char *a, *lb, *rb, *eol;
509 size_t len;
510 a = strstr(author_message_buffer, "\nauthor ");
512 if (!a)
513 die(_("invalid commit: %s"), author_message);
514 lb = strchrnul(a + strlen("\nauthor "), '<');
516 rb = strchrnul(lb, '>');
517 eol = strchrnul(rb, '\n');
518 if (!*lb || !*rb || !*eol)
519 die(_("invalid commit: %s"), author_message);
520 if (lb == a + strlen("\nauthor "))
522 /* \nauthor <foo@example.com> */
523 name = xcalloc(1, 1);
524 else
525 name = xmemdupz(a + strlen("\nauthor "),
526 (lb - strlen(" ") -
527 (a + strlen("\nauthor "))));
528 email = xmemdupz(lb + strlen("<"), rb - (lb + strlen("<")));
529 date = xmemdupz(rb + strlen("> "), eol - (rb + strlen("> ")));
530 len = eol - (rb + strlen("> "));
531 date = xmalloc(len + 2);
532 *date = '@';
533 memcpy(date + 1, rb + strlen("> "), len);
534 date[len + 1] = '\0';
535 }
536 if (force_author) {
538 const char *lb = strstr(force_author, " <");
539 const char *rb = strchr(force_author, '>');
540 if (!lb || !rb)
542 die(_("malformed --author parameter"));
543 name = xstrndup(force_author, lb - force_author);
544 email = xstrndup(lb + 2, rb - (lb + 2));
545 }
546 if (force_date)
548 date = force_date;
549 strbuf_addstr(author_ident, fmt_ident(name, email, date, IDENT_STRICT));
550 if (!split_ident_line(&author, author_ident->buf, author_ident->len) &&
551 sane_ident_split(&author)) {
552 export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
553 export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
554 export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
555 }
556}
557static char *cut_ident_timestamp_part(char *string)
559{
560 char *ket = strrchr(string, '>');
561 if (!ket || ket[1] != ' ')
562 die(_("Malformed ident string: '%s'"), string);
563 *++ket = '\0';
564 return ket;
565}
566static int prepare_to_commit(const char *index_file, const char *prefix,
568 struct commit *current_head,
569 struct wt_status *s,
570 struct strbuf *author_ident)
571{
572 struct stat statbuf;
573 struct strbuf committer_ident = STRBUF_INIT;
574 int commitable, saved_color_setting;
575 struct strbuf sb = STRBUF_INIT;
576 char *buffer;
577 const char *hook_arg1 = NULL;
578 const char *hook_arg2 = NULL;
579 int ident_shown = 0;
580 int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
581 /* This checks and barfs if author is badly specified */
583 determine_author_info(author_ident);
584 if (!no_verify && run_hook(index_file, "pre-commit", NULL))
586 return 0;
587 if (squash_message) {
589 /*
590 * Insert the proper subject line before other commit
591 * message options add their content.
592 */
593 if (use_message && !strcmp(use_message, squash_message))
594 strbuf_addstr(&sb, "squash! ");
595 else {
596 struct pretty_print_context ctx = {0};
597 struct commit *c;
598 c = lookup_commit_reference_by_name(squash_message);
599 if (!c)
600 die(_("could not lookup commit %s"), squash_message);
601 ctx.output_encoding = get_commit_output_encoding();
602 format_commit_message(c, "squash! %s\n\n", &sb,
603 &ctx);
604 }
605 }
606 if (message.len) {
608 strbuf_addbuf(&sb, &message);
609 hook_arg1 = "message";
610 } else if (logfile && !strcmp(logfile, "-")) {
611 if (isatty(0))
612 fprintf(stderr, _("(reading log message from standard input)\n"));
613 if (strbuf_read(&sb, 0, 0) < 0)
614 die_errno(_("could not read log from standard input"));
615 hook_arg1 = "message";
616 } else if (logfile) {
617 if (strbuf_read_file(&sb, logfile, 0) < 0)
618 die_errno(_("could not read log file '%s'"),
619 logfile);
620 hook_arg1 = "message";
621 } else if (use_message) {
622 buffer = strstr(use_message_buffer, "\n\n");
623 if (!use_editor && (!buffer || buffer[2] == '\0'))
624 die(_("commit has empty message"));
625 strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
626 hook_arg1 = "commit";
627 hook_arg2 = use_message;
628 } else if (fixup_message) {
629 struct pretty_print_context ctx = {0};
630 struct commit *commit;
631 commit = lookup_commit_reference_by_name(fixup_message);
632 if (!commit)
633 die(_("could not lookup commit %s"), fixup_message);
634 ctx.output_encoding = get_commit_output_encoding();
635 format_commit_message(commit, "fixup! %s\n\n",
636 &sb, &ctx);
637 hook_arg1 = "message";
638 } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
639 if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
640 die_errno(_("could not read MERGE_MSG"));
641 hook_arg1 = "merge";
642 } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
643 if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
644 die_errno(_("could not read SQUASH_MSG"));
645 hook_arg1 = "squash";
646 } else if (template_file) {
647 if (strbuf_read_file(&sb, template_file, 0) < 0)
648 die_errno(_("could not read '%s'"), template_file);
649 hook_arg1 = "template";
650 clean_message_contents = 0;
651 }
652 /*
654 * The remaining cases don't modify the template message, but
655 * just set the argument(s) to the prepare-commit-msg hook.
656 */
657 else if (whence == FROM_MERGE)
658 hook_arg1 = "merge";
659 else if (whence == FROM_CHERRY_PICK) {
660 hook_arg1 = "commit";
661 hook_arg2 = "CHERRY_PICK_HEAD";
662 }
663 if (squash_message) {
665 /*
666 * If squash_commit was used for the commit subject,
667 * then we're possibly hijacking other commit log options.
668 * Reset the hook args to tell the real story.
669 */
670 hook_arg1 = "message";
671 hook_arg2 = "";
672 }
673 s->fp = fopen(git_path(commit_editmsg), "w");
675 if (s->fp == NULL)
676 die_errno(_("could not open '%s'"), git_path(commit_editmsg));
677 if (clean_message_contents)
679 stripspace(&sb, 0);
680 if (signoff) {
682 /*
683 * See if we have a Conflicts: block at the end. If yes, count
684 * its size, so we can ignore it.
685 */
686 int ignore_footer = 0;
687 int i, eol, previous = 0;
688 const char *nl;
689 for (i = 0; i < sb.len; i++) {
691 nl = memchr(sb.buf + i, '\n', sb.len - i);
692 if (nl)
693 eol = nl - sb.buf;
694 else
695 eol = sb.len;
696 if (!prefixcmp(sb.buf + previous, "\nConflicts:\n")) {
697 ignore_footer = sb.len - previous;
698 break;
699 }
700 while (i < eol)
701 i++;
702 previous = eol;
703 }
704 append_signoff(&sb, ignore_footer);
706 }
707 if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
709 die_errno(_("could not write commit template"));
710 strbuf_release(&sb);
712 /* This checks if committer ident is explicitly given */
714 strbuf_addstr(&committer_ident, git_committer_info(IDENT_STRICT));
715 if (use_editor && include_status) {
716 char *ai_tmp, *ci_tmp;
717 if (whence != FROM_COMMIT)
718 status_printf_ln(s, GIT_COLOR_NORMAL,
719 whence == FROM_MERGE
720 ? _("\n"
721 "It looks like you may be committing a merge.\n"
722 "If this is not correct, please remove the file\n"
723 " %s\n"
724 "and try again.\n")
725 : _("\n"
726 "It looks like you may be committing a cherry-pick.\n"
727 "If this is not correct, please remove the file\n"
728 " %s\n"
729 "and try again.\n"),
730 git_path(whence == FROM_MERGE
731 ? "MERGE_HEAD"
732 : "CHERRY_PICK_HEAD"));
733 fprintf(s->fp, "\n");
735 if (cleanup_mode == CLEANUP_ALL)
736 status_printf(s, GIT_COLOR_NORMAL,
737 _("Please enter the commit message for your changes."
738 " Lines starting\nwith '%c' will be ignored, and an empty"
739 " message aborts the commit.\n"), comment_line_char);
740 else /* CLEANUP_SPACE, that is. */
741 status_printf(s, GIT_COLOR_NORMAL,
742 _("Please enter the commit message for your changes."
743 " Lines starting\n"
744 "with '%c' will be kept; you may remove them"
745 " yourself if you want to.\n"
746 "An empty message aborts the commit.\n"), comment_line_char);
747 if (only_include_assumed)
748 status_printf_ln(s, GIT_COLOR_NORMAL,
749 "%s", only_include_assumed);
750 ai_tmp = cut_ident_timestamp_part(author_ident->buf);
752 ci_tmp = cut_ident_timestamp_part(committer_ident.buf);
753 if (strcmp(author_ident->buf, committer_ident.buf))
754 status_printf_ln(s, GIT_COLOR_NORMAL,
755 _("%s"
756 "Author: %s"),
757 ident_shown++ ? "" : "\n",
758 author_ident->buf);
759 if (!committer_ident_sufficiently_given())
761 status_printf_ln(s, GIT_COLOR_NORMAL,
762 _("%s"
763 "Committer: %s"),
764 ident_shown++ ? "" : "\n",
765 committer_ident.buf);
766 if (ident_shown)
768 status_printf_ln(s, GIT_COLOR_NORMAL, "");
769 saved_color_setting = s->use_color;
771 s->use_color = 0;
772 commitable = run_status(s->fp, index_file, prefix, 1, s);
773 s->use_color = saved_color_setting;
774 *ai_tmp = ' ';
776 *ci_tmp = ' ';
777 } else {
778 unsigned char sha1[20];
779 const char *parent = "HEAD";
780 if (!active_nr && read_cache() < 0)
782 die(_("Cannot read index"));
783 if (amend)
785 parent = "HEAD^1";
786 if (get_sha1(parent, sha1))
788 commitable = !!active_nr;
789 else
790 commitable = index_differs_from(parent, 0);
791 }
792 strbuf_release(&committer_ident);
793 fclose(s->fp);
795 /*
797 * Reject an attempt to record a non-merge empty commit without
798 * explicit --allow-empty. In the cherry-pick case, it may be
799 * empty due to conflict resolution, which the user should okay.
800 */
801 if (!commitable && whence != FROM_MERGE && !allow_empty &&
802 !(amend && is_a_merge(current_head))) {
803 run_status(stdout, index_file, prefix, 0, s);
804 if (amend)
805 fputs(_(empty_amend_advice), stderr);
806 else if (whence == FROM_CHERRY_PICK)
807 fputs(_(empty_cherry_pick_advice), stderr);
808 return 0;
809 }
810 /*
812 * Re-read the index as pre-commit hook could have updated it,
813 * and write it out as a tree. We must do this before we invoke
814 * the editor and after we invoke run_status above.
815 */
816 discard_cache();
817 read_cache_from(index_file);
818 if (update_main_cache_tree(0)) {
819 error(_("Error building trees"));
820 return 0;
821 }
822 if (run_hook(index_file, "prepare-commit-msg",
824 git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
825 return 0;
826 if (use_editor) {
828 char index[PATH_MAX];
829 const char *env[2] = { NULL };
830 env[0] = index;
831 snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
832 if (launch_editor(git_path(commit_editmsg), NULL, env)) {
833 fprintf(stderr,
834 _("Please supply the message using either -m or -F option.\n"));
835 exit(1);
836 }
837 }
838 if (!no_verify &&
840 run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
841 return 0;
842 }
843 return 1;
845}
846static int rest_is_empty(struct strbuf *sb, int start)
848{
849 int i, eol;
850 const char *nl;
851 /* Check if the rest is just whitespace and Signed-of-by's. */
853 for (i = start; i < sb->len; i++) {
854 nl = memchr(sb->buf + i, '\n', sb->len - i);
855 if (nl)
856 eol = nl - sb->buf;
857 else
858 eol = sb->len;
859 if (strlen(sign_off_header) <= eol - i &&
861 !prefixcmp(sb->buf + i, sign_off_header)) {
862 i = eol;
863 continue;
864 }
865 while (i < eol)
866 if (!isspace(sb->buf[i++]))
867 return 0;
868 }
869 return 1;
871}
872/*
874 * Find out if the message in the strbuf contains only whitespace and
875 * Signed-off-by lines.
876 */
877static int message_is_empty(struct strbuf *sb)
878{
879 if (cleanup_mode == CLEANUP_NONE && sb->len)
880 return 0;
881 return rest_is_empty(sb, 0);
882}
883/*
885 * See if the user edited the message in the editor or left what
886 * was in the template intact
887 */
888static int template_untouched(struct strbuf *sb)
889{
890 struct strbuf tmpl = STRBUF_INIT;
891 char *start;
892 if (cleanup_mode == CLEANUP_NONE && sb->len)
894 return 0;
895 if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
897 return 0;
898 stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
900 start = (char *)skip_prefix(sb->buf, tmpl.buf);
901 if (!start)
902 start = sb->buf;
903 strbuf_release(&tmpl);
904 return rest_is_empty(sb, start - sb->buf);
905}
906static const char *find_author_by_nickname(const char *name)
908{
909 struct rev_info revs;
910 struct commit *commit;
911 struct strbuf buf = STRBUF_INIT;
912 const char *av[20];
913 int ac = 0;
914 init_revisions(&revs, NULL);
916 strbuf_addf(&buf, "--author=%s", name);
917 av[++ac] = "--all";
918 av[++ac] = "-i";
919 av[++ac] = buf.buf;
920 av[++ac] = NULL;
921 setup_revisions(ac, av, &revs, NULL);
922 prepare_revision_walk(&revs);
923 commit = get_revision(&revs);
924 if (commit) {
925 struct pretty_print_context ctx = {0};
926 ctx.date_mode = DATE_NORMAL;
927 strbuf_release(&buf);
928 format_commit_message(commit, "%an <%ae>", &buf, &ctx);
929 return strbuf_detach(&buf, NULL);
930 }
931 die(_("No existing author found with '%s'"), name);
932}
933static void handle_untracked_files_arg(struct wt_status *s)
936{
937 if (!untracked_files_arg)
938 ; /* default already initialized */
939 else if (!strcmp(untracked_files_arg, "no"))
940 s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
941 else if (!strcmp(untracked_files_arg, "normal"))
942 s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
943 else if (!strcmp(untracked_files_arg, "all"))
944 s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
945 else
946 die(_("Invalid untracked files mode '%s'"), untracked_files_arg);
947}
948static const char *read_commit_message(const char *name)
950{
951 const char *out_enc;
952 struct commit *commit;
953 commit = lookup_commit_reference_by_name(name);
955 if (!commit)
956 die(_("could not lookup commit %s"), name);
957 out_enc = get_commit_output_encoding();
958 return logmsg_reencode(commit, out_enc);
959}
960static int parse_and_validate_options(int argc, const char *argv[],
962 const struct option *options,
963 const char * const usage[],
964 const char *prefix,
965 struct commit *current_head,
966 struct wt_status *s)
967{
968 int f = 0;
969 argc = parse_options(argc, argv, prefix, options, usage, 0);
971 if (force_author && !strchr(force_author, '>'))
973 force_author = find_author_by_nickname(force_author);
974 if (force_author && renew_authorship)
976 die(_("Using both --reset-author and --author does not make sense"));
977 if (logfile || message.len || use_message || fixup_message)
979 use_editor = 0;
980 if (0 <= edit_flag)
981 use_editor = edit_flag;
982 if (!use_editor)
983 setenv("GIT_EDITOR", ":", 1);
984 /* Sanity check options */
986 if (amend && !current_head)
987 die(_("You have nothing to amend."));
988 if (amend && whence != FROM_COMMIT) {
989 if (whence == FROM_MERGE)
990 die(_("You are in the middle of a merge -- cannot amend."));
991 else if (whence == FROM_CHERRY_PICK)
992 die(_("You are in the middle of a cherry-pick -- cannot amend."));
993 }
994 if (fixup_message && squash_message)
995 die(_("Options --squash and --fixup cannot be used together"));
996 if (use_message)
997 f++;
998 if (edit_message)
999 f++;
1000 if (fixup_message)
1001 f++;
1002 if (logfile)
1003 f++;
1004 if (f > 1)
1005 die(_("Only one of -c/-C/-F/--fixup can be used."));
1006 if (message.len && f > 0)
1007 die((_("Option -m cannot be combined with -c/-C/-F/--fixup.")));
1008 if (f || message.len)
1009 template_file = NULL;
1010 if (edit_message)
1011 use_message = edit_message;
1012 if (amend && !use_message && !fixup_message)
1013 use_message = "HEAD";
1014 if (!use_message && whence != FROM_CHERRY_PICK && renew_authorship)
1015 die(_("--reset-author can be used only with -C, -c or --amend."));
1016 if (use_message) {
1017 use_message_buffer = read_commit_message(use_message);
1018 if (!renew_authorship) {
1019 author_message = use_message;
1020 author_message_buffer = use_message_buffer;
1021 }
1022 }
1023 if (whence == FROM_CHERRY_PICK && !renew_authorship) {
1024 author_message = "CHERRY_PICK_HEAD";
1025 author_message_buffer = read_commit_message(author_message);
1026 }
1027 if (patch_interactive)
1029 interactive = 1;
1030 if (!!also + !!only + !!all + !!interactive > 1)
1032 die(_("Only one of --include/--only/--all/--interactive/--patch can be used."));
1033 if (argc == 0 && (also || (only && !amend)))
1034 die(_("No paths with --include/--only does not make sense."));
1035 if (argc == 0 && only && amend)
1036 only_include_assumed = _("Clever... amending the last one with dirty index.");
1037 if (argc > 0 && !also && !only)
1038 only_include_assumed = _("Explicit paths specified without -i nor -o; assuming --only paths...");
1039 if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
1040 cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
1041 else if (!strcmp(cleanup_arg, "verbatim"))
1042 cleanup_mode = CLEANUP_NONE;
1043 else if (!strcmp(cleanup_arg, "whitespace"))
1044 cleanup_mode = CLEANUP_SPACE;
1045 else if (!strcmp(cleanup_arg, "strip"))
1046 cleanup_mode = CLEANUP_ALL;
1047 else
1048 die(_("Invalid cleanup mode %s"), cleanup_arg);
1049 handle_untracked_files_arg(s);
1051 if (all && argc > 0)
1053 die(_("Paths with -a does not make sense."));
1054 if (s->null_termination) {
1056 if (status_format == STATUS_FORMAT_NONE)
1057 status_format = STATUS_FORMAT_PORCELAIN;
1058 else if (status_format == STATUS_FORMAT_LONG)
1059 die(_("--long and -z are incompatible"));
1060 }
1061 if (status_format != STATUS_FORMAT_NONE)
1062 dry_run = 1;
1063 return argc;
1065}
1066static int dry_run_commit(int argc, const char **argv, const char *prefix,
1068 const struct commit *current_head, struct wt_status *s)
1069{
1070 int commitable;
1071 const char *index_file;
1072 index_file = prepare_index(argc, argv, prefix, current_head, 1);
1074 commitable = run_status(stdout, index_file, prefix, 0, s);
1075 rollback_index_files();
1076 return commitable ? 0 : 1;
1078}
1079static int parse_status_slot(const char *var, int offset)
1081{
1082 if (!strcasecmp(var+offset, "header"))
1083 return WT_STATUS_HEADER;
1084 if (!strcasecmp(var+offset, "branch"))
1085 return WT_STATUS_ONBRANCH;
1086 if (!strcasecmp(var+offset, "updated")
1087 || !strcasecmp(var+offset, "added"))
1088 return WT_STATUS_UPDATED;
1089 if (!strcasecmp(var+offset, "changed"))
1090 return WT_STATUS_CHANGED;
1091 if (!strcasecmp(var+offset, "untracked"))
1092 return WT_STATUS_UNTRACKED;
1093 if (!strcasecmp(var+offset, "nobranch"))
1094 return WT_STATUS_NOBRANCH;
1095 if (!strcasecmp(var+offset, "unmerged"))
1096 return WT_STATUS_UNMERGED;
1097 return -1;
1098}
1099static int git_status_config(const char *k, const char *v, void *cb)
1101{
1102 struct wt_status *s = cb;
1103 if (!prefixcmp(k, "column."))
1105 return git_column_config(k, v, "status", &s->colopts);
1106 if (!strcmp(k, "status.submodulesummary")) {
1107 int is_bool;
1108 s->submodule_summary = git_config_bool_or_int(k, v, &is_bool);
1109 if (is_bool && s->submodule_summary)
1110 s->submodule_summary = -1;
1111 return 0;
1112 }
1113 if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
1114 s->use_color = git_config_colorbool(k, v);
1115 return 0;
1116 }
1117 if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
1118 int slot = parse_status_slot(k, 13);
1119 if (slot < 0)
1120 return 0;
1121 if (!v)
1122 return config_error_nonbool(k);
1123 color_parse(v, k, s->color_palette[slot]);
1124 return 0;
1125 }
1126 if (!strcmp(k, "status.relativepaths")) {
1127 s->relative_paths = git_config_bool(k, v);
1128 return 0;
1129 }
1130 if (!strcmp(k, "status.showuntrackedfiles")) {
1131 if (!v)
1132 return config_error_nonbool(k);
1133 else if (!strcmp(v, "no"))
1134 s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
1135 else if (!strcmp(v, "normal"))
1136 s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
1137 else if (!strcmp(v, "all"))
1138 s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
1139 else
1140 return error(_("Invalid untracked files mode '%s'"), v);
1141 return 0;
1142 }
1143 return git_diff_ui_config(k, v, NULL);
1144}
1145int cmd_status(int argc, const char **argv, const char *prefix)
1147{
1148 static struct wt_status s;
1149 int fd;
1150 unsigned char sha1[20];
1151 static struct option builtin_status_options[] = {
1152 OPT__VERBOSE(&verbose, N_("be verbose")),
1153 OPT_SET_INT('s', "short", &status_format,
1154 N_("show status concisely"), STATUS_FORMAT_SHORT),
1155 OPT_BOOLEAN('b', "branch", &s.show_branch,
1156 N_("show branch information")),
1157 OPT_SET_INT(0, "porcelain", &status_format,
1158 N_("machine-readable output"),
1159 STATUS_FORMAT_PORCELAIN),
1160 OPT_SET_INT(0, "long", &status_format,
1161 N_("show status in long format (default)"),
1162 STATUS_FORMAT_LONG),
1163 OPT_BOOLEAN('z', "null", &s.null_termination,
1164 N_("terminate entries with NUL")),
1165 { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
1166 N_("mode"),
1167 N_("show untracked files, optional modes: all, normal, no. (Default: all)"),
1168 PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
1169 OPT_BOOLEAN(0, "ignored", &show_ignored_in_status,
1170 N_("show ignored files")),
1171 { OPTION_STRING, 0, "ignore-submodules", &ignore_submodule_arg, N_("when"),
1172 N_("ignore changes to submodules, optional when: all, dirty, untracked. (Default: all)"),
1173 PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
1174 OPT_COLUMN(0, "column", &s.colopts, N_("list untracked files in columns")),
1175 OPT_END(),
1176 };
1177 if (argc == 2 && !strcmp(argv[1], "-h"))
1179 usage_with_options(builtin_status_usage, builtin_status_options);
1180 wt_status_prepare(&s);
1182 gitmodules_config();
1183 git_config(git_status_config, &s);
1184 determine_whence(&s);
1185 argc = parse_options(argc, argv, prefix,
1186 builtin_status_options,
1187 builtin_status_usage, 0);
1188 finalize_colopts(&s.colopts, -1);
1189 if (s.null_termination) {
1191 if (status_format == STATUS_FORMAT_NONE)
1192 status_format = STATUS_FORMAT_PORCELAIN;
1193 else if (status_format == STATUS_FORMAT_LONG)
1194 die(_("--long and -z are incompatible"));
1195 }
1196 handle_untracked_files_arg(&s);
1198 if (show_ignored_in_status)
1199 s.show_ignored_files = 1;
1200 if (*argv)
1201 s.pathspec = get_pathspec(prefix, argv);
1202 read_cache_preload(s.pathspec);
1204 refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, s.pathspec, NULL, NULL);
1205 fd = hold_locked_index(&index_lock, 0);
1207 if (0 <= fd)
1208 update_index_if_able(&the_index, &index_lock);
1209 s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
1211 s.ignore_submodule_arg = ignore_submodule_arg;
1212 wt_status_collect(&s);
1213 if (s.relative_paths)
1215 s.prefix = prefix;
1216 switch (status_format) {
1218 case STATUS_FORMAT_SHORT:
1219 wt_shortstatus_print(&s);
1220 break;
1221 case STATUS_FORMAT_PORCELAIN:
1222 wt_porcelain_print(&s);
1223 break;
1224 case STATUS_FORMAT_NONE:
1225 case STATUS_FORMAT_LONG:
1226 s.verbose = verbose;
1227 s.ignore_submodule_arg = ignore_submodule_arg;
1228 wt_status_print(&s);
1229 break;
1230 }
1231 return 0;
1232}
1233static void print_summary(const char *prefix, const unsigned char *sha1,
1235 int initial_commit)
1236{
1237 struct rev_info rev;
1238 struct commit *commit;
1239 struct strbuf format = STRBUF_INIT;
1240 unsigned char junk_sha1[20];
1241 const char *head;
1242 struct pretty_print_context pctx = {0};
1243 struct strbuf author_ident = STRBUF_INIT;
1244 struct strbuf committer_ident = STRBUF_INIT;
1245 commit = lookup_commit(sha1);
1247 if (!commit)
1248 die(_("couldn't look up newly created commit"));
1249 if (!commit || parse_commit(commit))
1250 die(_("could not parse newly created commit"));
1251 strbuf_addstr(&format, "format:%h] %s");
1253 format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
1255 format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
1256 if (strbuf_cmp(&author_ident, &committer_ident)) {
1257 strbuf_addstr(&format, "\n Author: ");
1258 strbuf_addbuf_percentquote(&format, &author_ident);
1259 }
1260 if (!committer_ident_sufficiently_given()) {
1261 strbuf_addstr(&format, "\n Committer: ");
1262 strbuf_addbuf_percentquote(&format, &committer_ident);
1263 if (advice_implicit_identity) {
1264 strbuf_addch(&format, '\n');
1265 strbuf_addstr(&format, _(implicit_ident_advice));
1266 }
1267 }
1268 strbuf_release(&author_ident);
1269 strbuf_release(&committer_ident);
1270 init_revisions(&rev, prefix);
1272 setup_revisions(0, NULL, &rev, NULL);
1273 rev.diff = 1;
1275 rev.diffopt.output_format =
1276 DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
1277 rev.verbose_header = 1;
1279 rev.show_root_diff = 1;
1280 get_commit_format(format.buf, &rev);
1281 rev.always_show_header = 0;
1282 rev.diffopt.detect_rename = 1;
1283 rev.diffopt.break_opt = 0;
1284 diff_setup_done(&rev.diffopt);
1285 head = resolve_ref_unsafe("HEAD", junk_sha1, 0, NULL);
1287 printf("[%s%s ",
1288 !prefixcmp(head, "refs/heads/") ?
1289 head + 11 :
1290 !strcmp(head, "HEAD") ?
1291 _("detached HEAD") :
1292 head,
1293 initial_commit ? _(" (root-commit)") : "");
1294 if (!log_tree_commit(&rev, commit)) {
1296 rev.always_show_header = 1;
1297 rev.use_terminator = 1;
1298 log_tree_commit(&rev, commit);
1299 }
1300 strbuf_release(&format);
1302}
1303static int git_commit_config(const char *k, const char *v, void *cb)
1305{
1306 struct wt_status *s = cb;
1307 int status;
1308 if (!strcmp(k, "commit.template"))
1310 return git_config_pathname(&template_file, k, v);
1311 if (!strcmp(k, "commit.status")) {
1312 include_status = git_config_bool(k, v);
1313 return 0;
1314 }
1315 if (!strcmp(k, "commit.cleanup"))
1316 return git_config_string(&cleanup_arg, k, v);
1317 status = git_gpg_config(k, v, NULL);
1319 if (status)
1320 return status;
1321 return git_status_config(k, v, s);
1322}
1323static int run_rewrite_hook(const unsigned char *oldsha1,
1325 const unsigned char *newsha1)
1326{
1327 /* oldsha1 SP newsha1 LF NUL */
1328 static char buf[2*40 + 3];
1329 struct child_process proc;
1330 const char *argv[3];
1331 int code;
1332 size_t n;
1333 argv[0] = find_hook("post-rewrite");
1335 if (!argv[0])
1336 return 0;
1337 argv[1] = "amend";
1339 argv[2] = NULL;
1340 memset(&proc, 0, sizeof(proc));
1342 proc.argv = argv;
1343 proc.in = -1;
1344 proc.stdout_to_stderr = 1;
1345 code = start_command(&proc);
1347 if (code)
1348 return code;
1349 n = snprintf(buf, sizeof(buf), "%s %s\n",
1350 sha1_to_hex(oldsha1), sha1_to_hex(newsha1));
1351 write_in_full(proc.in, buf, n);
1352 close(proc.in);
1353 return finish_command(&proc);
1354}
1355int cmd_commit(int argc, const char **argv, const char *prefix)
1357{
1358 static struct wt_status s;
1359 static struct option builtin_commit_options[] = {
1360 OPT__QUIET(&quiet, N_("suppress summary after successful commit")),
1361 OPT__VERBOSE(&verbose, N_("show diff in commit message template")),
1362 OPT_GROUP(N_("Commit message options")),
1364 OPT_FILENAME('F', "file", &logfile, N_("read message from file")),
1365 OPT_STRING(0, "author", &force_author, N_("author"), N_("override author for commit")),
1366 OPT_STRING(0, "date", &force_date, N_("date"), N_("override date for commit")),
1367 OPT_CALLBACK('m', "message", &message, N_("message"), N_("commit message"), opt_parse_m),
1368 OPT_STRING('c', "reedit-message", &edit_message, N_("commit"), N_("reuse and edit message from specified commit")),
1369 OPT_STRING('C', "reuse-message", &use_message, N_("commit"), N_("reuse message from specified commit")),
1370 OPT_STRING(0, "fixup", &fixup_message, N_("commit"), N_("use autosquash formatted message to fixup specified commit")),
1371 OPT_STRING(0, "squash", &squash_message, N_("commit"), N_("use autosquash formatted message to squash specified commit")),
1372 OPT_BOOLEAN(0, "reset-author", &renew_authorship, N_("the commit is authored by me now (used with -C/-c/--amend)")),
1373 OPT_BOOLEAN('s', "signoff", &signoff, N_("add Signed-off-by:")),
1374 OPT_FILENAME('t', "template", &template_file, N_("use specified template file")),
1375 OPT_BOOL('e', "edit", &edit_flag, N_("force edit of commit")),
1376 OPT_STRING(0, "cleanup", &cleanup_arg, N_("default"), N_("how to strip spaces and #comments from message")),
1377 OPT_BOOLEAN(0, "status", &include_status, N_("include status in commit message template")),
1378 { OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key id"),
1379 N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
1380 /* end commit message options */
1381 OPT_GROUP(N_("Commit contents options")),
1383 OPT_BOOLEAN('a', "all", &all, N_("commit all changed files")),
1384 OPT_BOOLEAN('i', "include", &also, N_("add specified files to index for commit")),
1385 OPT_BOOLEAN(0, "interactive", &interactive, N_("interactively add files")),
1386 OPT_BOOLEAN('p', "patch", &patch_interactive, N_("interactively add changes")),
1387 OPT_BOOLEAN('o', "only", &only, N_("commit only specified files")),
1388 OPT_BOOLEAN('n', "no-verify", &no_verify, N_("bypass pre-commit hook")),
1389 OPT_BOOLEAN(0, "dry-run", &dry_run, N_("show what would be committed")),
1390 OPT_SET_INT(0, "short", &status_format, N_("show status concisely"),
1391 STATUS_FORMAT_SHORT),
1392 OPT_BOOLEAN(0, "branch", &s.show_branch, N_("show branch information")),
1393 OPT_SET_INT(0, "porcelain", &status_format,
1394 N_("machine-readable output"), STATUS_FORMAT_PORCELAIN),
1395 OPT_SET_INT(0, "long", &status_format,
1396 N_("show status in long format (default)"),
1397 STATUS_FORMAT_LONG),
1398 OPT_BOOLEAN('z', "null", &s.null_termination,
1399 N_("terminate entries with NUL")),
1400 OPT_BOOLEAN(0, "amend", &amend, N_("amend previous commit")),
1401 OPT_BOOLEAN(0, "no-post-rewrite", &no_post_rewrite, N_("bypass post-rewrite hook")),
1402 { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg, N_("mode"), N_("show untracked files, optional modes: all, normal, no. (Default: all)"), PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
1403 /* end commit contents options */
1404 { OPTION_BOOLEAN, 0, "allow-empty", &allow_empty, NULL,
1406 N_("ok to record an empty change"),
1407 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
1408 { OPTION_BOOLEAN, 0, "allow-empty-message", &allow_empty_message, NULL,
1409 N_("ok to record a change with an empty message"),
1410 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
1411 OPT_END()
1413 };
1414 struct strbuf sb = STRBUF_INIT;
1416 struct strbuf author_ident = STRBUF_INIT;
1417 const char *index_file, *reflog_msg;
1418 char *nl, *p;
1419 unsigned char sha1[20];
1420 struct ref_lock *ref_lock;
1421 struct commit_list *parents = NULL, **pptr = &parents;
1422 struct stat statbuf;
1423 int allow_fast_forward = 1;
1424 struct commit *current_head = NULL;
1425 struct commit_extra_header *extra = NULL;
1426 if (argc == 2 && !strcmp(argv[1], "-h"))
1428 usage_with_options(builtin_commit_usage, builtin_commit_options);
1429 wt_status_prepare(&s);
1431 gitmodules_config();
1432 git_config(git_commit_config, &s);
1433 determine_whence(&s);
1434 s.colopts = 0;
1435 if (get_sha1("HEAD", sha1))
1437 current_head = NULL;
1438 else {
1439 current_head = lookup_commit_or_die(sha1, "HEAD");
1440 if (!current_head || parse_commit(current_head))
1441 die(_("could not parse HEAD commit"));
1442 }
1443 argc = parse_and_validate_options(argc, argv, builtin_commit_options,
1444 builtin_commit_usage,
1445 prefix, current_head, &s);
1446 if (dry_run)
1447 return dry_run_commit(argc, argv, prefix, current_head, &s);
1448 index_file = prepare_index(argc, argv, prefix, current_head, 0);
1449 /* Set up everything for writing the commit object. This includes
1451 running hooks, writing the trees, and interacting with the user. */
1452 if (!prepare_to_commit(index_file, prefix,
1453 current_head, &s, &author_ident)) {
1454 rollback_index_files();
1455 return 1;
1456 }
1457 /* Determine parents */
1459 reflog_msg = getenv("GIT_REFLOG_ACTION");
1460 if (!current_head) {
1461 if (!reflog_msg)
1462 reflog_msg = "commit (initial)";
1463 } else if (amend) {
1464 struct commit_list *c;
1465 if (!reflog_msg)
1467 reflog_msg = "commit (amend)";
1468 for (c = current_head->parents; c; c = c->next)
1469 pptr = &commit_list_insert(c->item, pptr)->next;
1470 } else if (whence == FROM_MERGE) {
1471 struct strbuf m = STRBUF_INIT;
1472 FILE *fp;
1473 if (!reflog_msg)
1475 reflog_msg = "commit (merge)";
1476 pptr = &commit_list_insert(current_head, pptr)->next;
1477 fp = fopen(git_path("MERGE_HEAD"), "r");
1478 if (fp == NULL)
1479 die_errno(_("could not open '%s' for reading"),
1480 git_path("MERGE_HEAD"));
1481 while (strbuf_getline(&m, fp, '\n') != EOF) {
1482 struct commit *parent;
1483 parent = get_merge_parent(m.buf);
1485 if (!parent)
1486 die(_("Corrupt MERGE_HEAD file (%s)"), m.buf);
1487 pptr = &commit_list_insert(parent, pptr)->next;
1488 }
1489 fclose(fp);
1490 strbuf_release(&m);
1491 if (!stat(git_path("MERGE_MODE"), &statbuf)) {
1492 if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
1493 die_errno(_("could not read MERGE_MODE"));
1494 if (!strcmp(sb.buf, "no-ff"))
1495 allow_fast_forward = 0;
1496 }
1497 if (allow_fast_forward)
1498 parents = reduce_heads(parents);
1499 } else {
1500 if (!reflog_msg)
1501 reflog_msg = (whence == FROM_CHERRY_PICK)
1502 ? "commit (cherry-pick)"
1503 : "commit";
1504 pptr = &commit_list_insert(current_head, pptr)->next;
1505 }
1506 /* Finally, get the commit message */
1508 strbuf_reset(&sb);
1509 if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
1510 int saved_errno = errno;
1511 rollback_index_files();
1512 die(_("could not read commit message: %s"), strerror(saved_errno));
1513 }
1514 /* Truncate the message just before the diff, if any. */
1516 if (verbose) {
1517 p = strstr(sb.buf, "\ndiff --git ");
1518 if (p != NULL)
1519 strbuf_setlen(&sb, p - sb.buf + 1);
1520 }
1521 if (cleanup_mode != CLEANUP_NONE)
1523 stripspace(&sb, cleanup_mode == CLEANUP_ALL);
1524 if (template_untouched(&sb) && !allow_empty_message) {
1525 rollback_index_files();
1526 fprintf(stderr, _("Aborting commit; you did not edit the message.\n"));
1527 exit(1);
1528 }
1529 if (message_is_empty(&sb) && !allow_empty_message) {
1530 rollback_index_files();
1531 fprintf(stderr, _("Aborting commit due to empty commit message.\n"));
1532 exit(1);
1533 }
1534 if (amend) {
1536 const char *exclude_gpgsig[2] = { "gpgsig", NULL };
1537 extra = read_commit_extra_headers(current_head, exclude_gpgsig);
1538 } else {
1539 struct commit_extra_header **tail = &extra;
1540 append_merge_tag_headers(parents, &tail);
1541 }
1542 if (commit_tree_extended(&sb, active_cache_tree->sha1, parents, sha1,
1544 author_ident.buf, sign_commit, extra)) {
1545 rollback_index_files();
1546 die(_("failed to write commit object"));
1547 }
1548 strbuf_release(&author_ident);
1549 free_commit_extra_headers(extra);
1550 ref_lock = lock_any_ref_for_update("HEAD",
1552 !current_head
1553 ? NULL
1554 : current_head->object.sha1,
1555 0);
1556 nl = strchr(sb.buf, '\n');
1558 if (nl)
1559 strbuf_setlen(&sb, nl + 1 - sb.buf);
1560 else
1561 strbuf_addch(&sb, '\n');
1562 strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
1563 strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
1564 if (!ref_lock) {
1566 rollback_index_files();
1567 die(_("cannot lock HEAD ref"));
1568 }
1569 if (write_ref_sha1(ref_lock, sha1, sb.buf) < 0) {
1570 rollback_index_files();
1571 die(_("cannot update HEAD ref"));
1572 }
1573 unlink(git_path("CHERRY_PICK_HEAD"));
1575 unlink(git_path("REVERT_HEAD"));
1576 unlink(git_path("MERGE_HEAD"));
1577 unlink(git_path("MERGE_MSG"));
1578 unlink(git_path("MERGE_MODE"));
1579 unlink(git_path("SQUASH_MSG"));
1580 if (commit_index_files())
1582 die (_("Repository has been updated, but unable to write\n"
1583 "new_index file. Check that disk is not full or quota is\n"
1584 "not exceeded, and then \"git reset HEAD\" to recover."));
1585 rerere(0);
1587 run_hook(get_index_file(), "post-commit", NULL);
1588 if (amend && !no_post_rewrite) {
1589 struct notes_rewrite_cfg *cfg;
1590 cfg = init_copy_notes_for_rewrite("amend");
1591 if (cfg) {
1592 /* we are amending, so current_head is not NULL */
1593 copy_note_for_rewrite(cfg, current_head->object.sha1, sha1);
1594 finish_copy_notes_for_rewrite(cfg);
1595 }
1596 run_rewrite_hook(current_head->object.sha1, sha1);
1597 }
1598 if (!quiet)
1599 print_summary(prefix, sha1, !current_head);
1600 return 0;
1602}