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[git/platforms.git] / builtin-commit.c
blobd6a3a6203aee399218c89d31ff5cb28f16dc0cc6
1 /*
2 * Builtin "git commit"
4 * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
5 * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
6 */
8 #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"
28 static const char * const builtin_commit_usage[] = {
29 "git commit [options] [--] <filepattern>...",
30 NULL
33 static const char * const builtin_status_usage[] = {
34 "git status [options] [--] <filepattern>...",
35 NULL
38 static unsigned char head_sha1[20], merge_head_sha1[20];
39 static char *use_message_buffer;
40 static const char commit_editmsg[] = "COMMIT_EDITMSG";
41 static struct lock_file index_lock; /* real index */
42 static struct lock_file false_lock; /* used only for partial commits */
43 static enum {
44 COMMIT_AS_IS = 1,
45 COMMIT_NORMAL,
46 COMMIT_PARTIAL,
47 } commit_style;
49 static const char *logfile, *force_author;
50 static const char *template_file;
51 static char *edit_message, *use_message;
52 static char *author_name, *author_email, *author_date;
53 static int all, edit_flag, also, interactive, only, amend, signoff;
54 static int quiet, verbose, no_verify, allow_empty;
55 static char *untracked_files_arg;
57 * The default commit message cleanup mode will remove the lines
58 * beginning with # (shell comments) and leading and trailing
59 * whitespaces (empty lines or containing only whitespaces)
60 * if editor is used, and only the whitespaces if the message
61 * is specified explicitly.
63 static enum {
64 CLEANUP_SPACE,
65 CLEANUP_NONE,
66 CLEANUP_ALL,
67 } cleanup_mode;
68 static char *cleanup_arg;
70 static int use_editor = 1, initial_commit, in_merge;
71 static const char *only_include_assumed;
72 static struct strbuf message;
74 static int opt_parse_m(const struct option *opt, const char *arg, int unset)
76 struct strbuf *buf = opt->value;
77 if (unset)
78 strbuf_setlen(buf, 0);
79 else {
80 strbuf_addstr(buf, arg);
81 strbuf_addstr(buf, "\n\n");
83 return 0;
86 static struct option builtin_commit_options[] = {
87 OPT__QUIET(&quiet),
88 OPT__VERBOSE(&verbose),
89 OPT_GROUP("Commit message options"),
91 OPT_STRING('F', "file", &logfile, "FILE", "read log from file"),
92 OPT_STRING(0, "author", &force_author, "AUTHOR", "override author for commit"),
93 OPT_CALLBACK('m', "message", &message, "MESSAGE", "specify commit message", opt_parse_m),
94 OPT_STRING('c', "reedit-message", &edit_message, "COMMIT", "reuse and edit message from specified commit "),
95 OPT_STRING('C', "reuse-message", &use_message, "COMMIT", "reuse message from specified commit"),
96 OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
97 OPT_STRING('t', "template", &template_file, "FILE", "use specified template file"),
98 OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),
100 OPT_GROUP("Commit contents options"),
101 OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
102 OPT_BOOLEAN('i', "include", &also, "add specified files to index for commit"),
103 OPT_BOOLEAN(0, "interactive", &interactive, "interactively add files"),
104 OPT_BOOLEAN('o', "only", &only, "commit only specified files"),
105 OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
106 OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
107 { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg, "mode", "show untracked files, optional modes: all, normal, no. (Default: all)", PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
108 OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),
109 OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"),
111 OPT_END()
114 static void rollback_index_files(void)
116 switch (commit_style) {
117 case COMMIT_AS_IS:
118 break; /* nothing to do */
119 case COMMIT_NORMAL:
120 rollback_lock_file(&index_lock);
121 break;
122 case COMMIT_PARTIAL:
123 rollback_lock_file(&index_lock);
124 rollback_lock_file(&false_lock);
125 break;
129 static int commit_index_files(void)
131 int err = 0;
133 switch (commit_style) {
134 case COMMIT_AS_IS:
135 break; /* nothing to do */
136 case COMMIT_NORMAL:
137 err = commit_lock_file(&index_lock);
138 break;
139 case COMMIT_PARTIAL:
140 err = commit_lock_file(&index_lock);
141 rollback_lock_file(&false_lock);
142 break;
145 return err;
149 * Take a union of paths in the index and the named tree (typically, "HEAD"),
150 * and return the paths that match the given pattern in list.
152 static int list_paths(struct string_list *list, const char *with_tree,
153 const char *prefix, const char **pattern)
155 int i;
156 char *m;
158 for (i = 0; pattern[i]; i++)
160 m = xcalloc(1, i);
162 if (with_tree)
163 overlay_tree_on_cache(with_tree, prefix);
165 for (i = 0; i < active_nr; i++) {
166 struct cache_entry *ce = active_cache[i];
167 if (ce->ce_flags & CE_UPDATE)
168 continue;
169 if (!match_pathspec(pattern, ce->name, ce_namelen(ce), 0, m))
170 continue;
171 string_list_insert(ce->name, list);
174 return report_path_error(m, pattern, prefix ? strlen(prefix) : 0);
177 static void add_remove_files(struct string_list *list)
179 int i;
180 for (i = 0; i < list->nr; i++) {
181 struct stat st;
182 struct string_list_item *p = &(list->items[i]);
184 if (!lstat(p->string, &st)) {
185 if (add_to_cache(p->string, &st, 0))
186 die("updating files failed");
187 } else
188 remove_file_from_cache(p->string);
192 static void create_base_index(void)
194 struct tree *tree;
195 struct unpack_trees_options opts;
196 struct tree_desc t;
198 if (initial_commit) {
199 discard_cache();
200 return;
203 memset(&opts, 0, sizeof(opts));
204 opts.head_idx = 1;
205 opts.index_only = 1;
206 opts.merge = 1;
207 opts.src_index = &the_index;
208 opts.dst_index = &the_index;
210 opts.fn = oneway_merge;
211 tree = parse_tree_indirect(head_sha1);
212 if (!tree)
213 die("failed to unpack HEAD tree object");
214 parse_tree(tree);
215 init_tree_desc(&t, tree->buffer, tree->size);
216 if (unpack_trees(1, &t, &opts))
217 exit(128); /* We've already reported the error, finish dying */
220 static char *prepare_index(int argc, const char **argv, const char *prefix)
222 int fd;
223 struct string_list partial;
224 const char **pathspec = NULL;
226 if (interactive) {
227 interactive_add(argc, argv, prefix);
228 if (read_cache_preload(NULL) < 0)
229 die("index file corrupt");
230 commit_style = COMMIT_AS_IS;
231 return get_index_file();
234 if (*argv)
235 pathspec = get_pathspec(prefix, argv);
237 if (read_cache_preload(pathspec) < 0)
238 die("index file corrupt");
241 * Non partial, non as-is commit.
243 * (1) get the real index;
244 * (2) update the_index as necessary;
245 * (3) write the_index out to the real index (still locked);
246 * (4) return the name of the locked index file.
248 * The caller should run hooks on the locked real index, and
249 * (A) if all goes well, commit the real index;
250 * (B) on failure, rollback the real index.
252 if (all || (also && pathspec && *pathspec)) {
253 int fd = hold_locked_index(&index_lock, 1);
254 add_files_to_cache(also ? prefix : NULL, pathspec, 0);
255 refresh_cache(REFRESH_QUIET);
256 if (write_cache(fd, active_cache, active_nr) ||
257 close_lock_file(&index_lock))
258 die("unable to write new_index file");
259 commit_style = COMMIT_NORMAL;
260 return index_lock.filename;
264 * As-is commit.
266 * (1) return the name of the real index file.
268 * The caller should run hooks on the real index, and run
269 * hooks on the real index, and create commit from the_index.
270 * We still need to refresh the index here.
272 if (!pathspec || !*pathspec) {
273 fd = hold_locked_index(&index_lock, 1);
274 refresh_cache(REFRESH_QUIET);
275 if (write_cache(fd, active_cache, active_nr) ||
276 commit_locked_index(&index_lock))
277 die("unable to write new_index file");
278 commit_style = COMMIT_AS_IS;
279 return get_index_file();
283 * A partial commit.
285 * (0) find the set of affected paths;
286 * (1) get lock on the real index file;
287 * (2) update the_index with the given paths;
288 * (3) write the_index out to the real index (still locked);
289 * (4) get lock on the false index file;
290 * (5) reset the_index from HEAD;
291 * (6) update the_index the same way as (2);
292 * (7) write the_index out to the false index file;
293 * (8) return the name of the false index file (still locked);
295 * The caller should run hooks on the locked false index, and
296 * create commit from it. Then
297 * (A) if all goes well, commit the real index;
298 * (B) on failure, rollback the real index;
299 * In either case, rollback the false index.
301 commit_style = COMMIT_PARTIAL;
303 if (file_exists(git_path("MERGE_HEAD")))
304 die("cannot do a partial commit during a merge.");
306 memset(&partial, 0, sizeof(partial));
307 partial.strdup_strings = 1;
308 if (list_paths(&partial, initial_commit ? NULL : "HEAD", prefix, pathspec))
309 exit(1);
311 discard_cache();
312 if (read_cache() < 0)
313 die("cannot read the index");
315 fd = hold_locked_index(&index_lock, 1);
316 add_remove_files(&partial);
317 refresh_cache(REFRESH_QUIET);
318 if (write_cache(fd, active_cache, active_nr) ||
319 close_lock_file(&index_lock))
320 die("unable to write new_index file");
322 fd = hold_lock_file_for_update(&false_lock,
323 git_path("next-index-%"PRIuMAX,
324 (uintmax_t) getpid()),
325 LOCK_DIE_ON_ERROR);
327 create_base_index();
328 add_remove_files(&partial);
329 refresh_cache(REFRESH_QUIET);
331 if (write_cache(fd, active_cache, active_nr) ||
332 close_lock_file(&false_lock))
333 die("unable to write temporary index file");
335 discard_cache();
336 read_cache_from(false_lock.filename);
338 return false_lock.filename;
341 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn)
343 struct wt_status s;
345 wt_status_prepare(&s);
346 if (wt_status_relative_paths)
347 s.prefix = prefix;
349 if (amend) {
350 s.amend = 1;
351 s.reference = "HEAD^1";
353 s.verbose = verbose;
354 s.untracked = (show_untracked_files == SHOW_ALL_UNTRACKED_FILES);
355 s.index_file = index_file;
356 s.fp = fp;
357 s.nowarn = nowarn;
359 wt_status_print(&s);
361 return s.commitable;
364 static int is_a_merge(const unsigned char *sha1)
366 struct commit *commit = lookup_commit(sha1);
367 if (!commit || parse_commit(commit))
368 die("could not parse HEAD commit");
369 return !!(commit->parents && commit->parents->next);
372 static const char sign_off_header[] = "Signed-off-by: ";
374 static void determine_author_info(void)
376 char *name, *email, *date;
378 name = getenv("GIT_AUTHOR_NAME");
379 email = getenv("GIT_AUTHOR_EMAIL");
380 date = getenv("GIT_AUTHOR_DATE");
382 if (use_message) {
383 const char *a, *lb, *rb, *eol;
385 a = strstr(use_message_buffer, "\nauthor ");
386 if (!a)
387 die("invalid commit: %s", use_message);
389 lb = strstr(a + 8, " <");
390 rb = strstr(a + 8, "> ");
391 eol = strchr(a + 8, '\n');
392 if (!lb || !rb || !eol)
393 die("invalid commit: %s", use_message);
395 name = xstrndup(a + 8, lb - (a + 8));
396 email = xstrndup(lb + 2, rb - (lb + 2));
397 date = xstrndup(rb + 2, eol - (rb + 2));
400 if (force_author) {
401 const char *lb = strstr(force_author, " <");
402 const char *rb = strchr(force_author, '>');
404 if (!lb || !rb)
405 die("malformed --author parameter");
406 name = xstrndup(force_author, lb - force_author);
407 email = xstrndup(lb + 2, rb - (lb + 2));
410 author_name = name;
411 author_email = email;
412 author_date = date;
415 static int prepare_to_commit(const char *index_file, const char *prefix)
417 struct stat statbuf;
418 int commitable, saved_color_setting;
419 struct strbuf sb = STRBUF_INIT;
420 char *buffer;
421 FILE *fp;
422 const char *hook_arg1 = NULL;
423 const char *hook_arg2 = NULL;
424 int ident_shown = 0;
426 if (!no_verify && run_hook(index_file, "pre-commit", NULL))
427 return 0;
429 if (message.len) {
430 strbuf_addbuf(&sb, &message);
431 hook_arg1 = "message";
432 } else if (logfile && !strcmp(logfile, "-")) {
433 if (isatty(0))
434 fprintf(stderr, "(reading log message from standard input)\n");
435 if (strbuf_read(&sb, 0, 0) < 0)
436 die("could not read log from standard input");
437 hook_arg1 = "message";
438 } else if (logfile) {
439 if (strbuf_read_file(&sb, logfile, 0) < 0)
440 die("could not read log file '%s': %s",
441 logfile, strerror(errno));
442 hook_arg1 = "message";
443 } else if (use_message) {
444 buffer = strstr(use_message_buffer, "\n\n");
445 if (!buffer || buffer[2] == '\0')
446 die("commit has empty message");
447 strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
448 hook_arg1 = "commit";
449 hook_arg2 = use_message;
450 } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
451 if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
452 die("could not read MERGE_MSG: %s", strerror(errno));
453 hook_arg1 = "merge";
454 } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
455 if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
456 die("could not read SQUASH_MSG: %s", strerror(errno));
457 hook_arg1 = "squash";
458 } else if (template_file && !stat(template_file, &statbuf)) {
459 if (strbuf_read_file(&sb, template_file, 0) < 0)
460 die("could not read %s: %s",
461 template_file, strerror(errno));
462 hook_arg1 = "template";
466 * This final case does not modify the template message,
467 * it just sets the argument to the prepare-commit-msg hook.
469 else if (in_merge)
470 hook_arg1 = "merge";
472 fp = fopen(git_path(commit_editmsg), "w");
473 if (fp == NULL)
474 die("could not open %s: %s",
475 git_path(commit_editmsg), strerror(errno));
477 if (cleanup_mode != CLEANUP_NONE)
478 stripspace(&sb, 0);
480 if (signoff) {
481 struct strbuf sob = STRBUF_INIT;
482 int i;
484 strbuf_addstr(&sob, sign_off_header);
485 strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
486 getenv("GIT_COMMITTER_EMAIL")));
487 strbuf_addch(&sob, '\n');
488 for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
489 ; /* do nothing */
490 if (prefixcmp(sb.buf + i, sob.buf)) {
491 if (prefixcmp(sb.buf + i, sign_off_header))
492 strbuf_addch(&sb, '\n');
493 strbuf_addbuf(&sb, &sob);
495 strbuf_release(&sob);
498 if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
499 die("could not write commit template: %s", strerror(errno));
501 strbuf_release(&sb);
503 determine_author_info();
505 /* This checks if committer ident is explicitly given */
506 git_committer_info(0);
507 if (use_editor) {
508 char *author_ident;
509 const char *committer_ident;
511 if (in_merge)
512 fprintf(fp,
513 "#\n"
514 "# It looks like you may be committing a MERGE.\n"
515 "# If this is not correct, please remove the file\n"
516 "# %s\n"
517 "# and try again.\n"
518 "#\n",
519 git_path("MERGE_HEAD"));
521 fprintf(fp,
522 "\n"
523 "# Please enter the commit message for your changes.");
524 if (cleanup_mode == CLEANUP_ALL)
525 fprintf(fp,
526 " Lines starting\n"
527 "# with '#' will be ignored, and an empty"
528 " message aborts the commit.\n");
529 else /* CLEANUP_SPACE, that is. */
530 fprintf(fp,
531 " Lines starting\n"
532 "# with '#' will be kept; you may remove them"
533 " yourself if you want to.\n"
534 "# An empty message aborts the commit.\n");
535 if (only_include_assumed)
536 fprintf(fp, "# %s\n", only_include_assumed);
538 author_ident = xstrdup(fmt_name(author_name, author_email));
539 committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
540 getenv("GIT_COMMITTER_EMAIL"));
541 if (strcmp(author_ident, committer_ident))
542 fprintf(fp,
543 "%s"
544 "# Author: %s\n",
545 ident_shown++ ? "" : "#\n",
546 author_ident);
547 free(author_ident);
549 if (!user_ident_explicitly_given)
550 fprintf(fp,
551 "%s"
552 "# Committer: %s\n",
553 ident_shown++ ? "" : "#\n",
554 committer_ident);
556 if (ident_shown)
557 fprintf(fp, "#\n");
559 saved_color_setting = wt_status_use_color;
560 wt_status_use_color = 0;
561 commitable = run_status(fp, index_file, prefix, 1);
562 wt_status_use_color = saved_color_setting;
563 } else {
564 struct rev_info rev;
565 unsigned char sha1[20];
566 const char *parent = "HEAD";
568 if (!active_nr && read_cache() < 0)
569 die("Cannot read index");
571 if (amend)
572 parent = "HEAD^1";
574 if (get_sha1(parent, sha1))
575 commitable = !!active_nr;
576 else {
577 init_revisions(&rev, "");
578 rev.abbrev = 0;
579 setup_revisions(0, NULL, &rev, parent);
580 DIFF_OPT_SET(&rev.diffopt, QUIET);
581 DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
582 run_diff_index(&rev, 1 /* cached */);
584 commitable = !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
588 fclose(fp);
590 if (!commitable && !in_merge && !allow_empty &&
591 !(amend && is_a_merge(head_sha1))) {
592 run_status(stdout, index_file, prefix, 0);
593 return 0;
597 * Re-read the index as pre-commit hook could have updated it,
598 * and write it out as a tree. We must do this before we invoke
599 * the editor and after we invoke run_status above.
601 discard_cache();
602 read_cache_from(index_file);
603 if (!active_cache_tree)
604 active_cache_tree = cache_tree();
605 if (cache_tree_update(active_cache_tree,
606 active_cache, active_nr, 0, 0) < 0) {
607 error("Error building trees");
608 return 0;
611 if (run_hook(index_file, "prepare-commit-msg",
612 git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
613 return 0;
615 if (use_editor) {
616 char index[PATH_MAX];
617 const char *env[2] = { index, NULL };
618 snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
619 if (launch_editor(git_path(commit_editmsg), NULL, env)) {
620 fprintf(stderr,
621 "Please supply the message using either -m or -F option.\n");
622 exit(1);
626 if (!no_verify &&
627 run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
628 return 0;
631 return 1;
635 * Find out if the message in the strbuf contains only whitespace and
636 * Signed-off-by lines.
638 static int message_is_empty(struct strbuf *sb)
640 struct strbuf tmpl = STRBUF_INIT;
641 const char *nl;
642 int eol, i, start = 0;
644 if (cleanup_mode == CLEANUP_NONE && sb->len)
645 return 0;
647 /* See if the template is just a prefix of the message. */
648 if (template_file && strbuf_read_file(&tmpl, template_file, 0) > 0) {
649 stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
650 if (start + tmpl.len <= sb->len &&
651 memcmp(tmpl.buf, sb->buf + start, tmpl.len) == 0)
652 start += tmpl.len;
654 strbuf_release(&tmpl);
656 /* Check if the rest is just whitespace and Signed-of-by's. */
657 for (i = start; i < sb->len; i++) {
658 nl = memchr(sb->buf + i, '\n', sb->len - i);
659 if (nl)
660 eol = nl - sb->buf;
661 else
662 eol = sb->len;
664 if (strlen(sign_off_header) <= eol - i &&
665 !prefixcmp(sb->buf + i, sign_off_header)) {
666 i = eol;
667 continue;
669 while (i < eol)
670 if (!isspace(sb->buf[i++]))
671 return 0;
674 return 1;
677 static const char *find_author_by_nickname(const char *name)
679 struct rev_info revs;
680 struct commit *commit;
681 struct strbuf buf = STRBUF_INIT;
682 const char *av[20];
683 int ac = 0;
685 init_revisions(&revs, NULL);
686 strbuf_addf(&buf, "--author=%s", name);
687 av[++ac] = "--all";
688 av[++ac] = "-i";
689 av[++ac] = buf.buf;
690 av[++ac] = NULL;
691 setup_revisions(ac, av, &revs, NULL);
692 prepare_revision_walk(&revs);
693 commit = get_revision(&revs);
694 if (commit) {
695 strbuf_release(&buf);
696 format_commit_message(commit, "%an <%ae>", &buf, DATE_NORMAL);
697 return strbuf_detach(&buf, NULL);
699 die("No existing author found with '%s'", name);
702 static int parse_and_validate_options(int argc, const char *argv[],
703 const char * const usage[],
704 const char *prefix)
706 int f = 0;
708 argc = parse_options(argc, argv, builtin_commit_options, usage, 0);
709 logfile = parse_options_fix_filename(prefix, logfile);
710 template_file = parse_options_fix_filename(prefix, template_file);
712 if (force_author && !strchr(force_author, '>'))
713 force_author = find_author_by_nickname(force_author);
715 if (logfile || message.len || use_message)
716 use_editor = 0;
717 if (edit_flag)
718 use_editor = 1;
719 if (!use_editor)
720 setenv("GIT_EDITOR", ":", 1);
722 if (get_sha1("HEAD", head_sha1))
723 initial_commit = 1;
725 if (!get_sha1("MERGE_HEAD", merge_head_sha1))
726 in_merge = 1;
728 /* Sanity check options */
729 if (amend && initial_commit)
730 die("You have nothing to amend.");
731 if (amend && in_merge)
732 die("You are in the middle of a merge -- cannot amend.");
734 if (use_message)
735 f++;
736 if (edit_message)
737 f++;
738 if (logfile)
739 f++;
740 if (f > 1)
741 die("Only one of -c/-C/-F can be used.");
742 if (message.len && f > 0)
743 die("Option -m cannot be combined with -c/-C/-F.");
744 if (edit_message)
745 use_message = edit_message;
746 if (amend && !use_message)
747 use_message = "HEAD";
748 if (use_message) {
749 unsigned char sha1[20];
750 static char utf8[] = "UTF-8";
751 const char *out_enc;
752 char *enc, *end;
753 struct commit *commit;
755 if (get_sha1(use_message, sha1))
756 die("could not lookup commit %s", use_message);
757 commit = lookup_commit_reference(sha1);
758 if (!commit || parse_commit(commit))
759 die("could not parse commit %s", use_message);
761 enc = strstr(commit->buffer, "\nencoding");
762 if (enc) {
763 end = strchr(enc + 10, '\n');
764 enc = xstrndup(enc + 10, end - (enc + 10));
765 } else {
766 enc = utf8;
768 out_enc = git_commit_encoding ? git_commit_encoding : utf8;
770 if (strcmp(out_enc, enc))
771 use_message_buffer =
772 reencode_string(commit->buffer, out_enc, enc);
775 * If we failed to reencode the buffer, just copy it
776 * byte for byte so the user can try to fix it up.
777 * This also handles the case where input and output
778 * encodings are identical.
780 if (use_message_buffer == NULL)
781 use_message_buffer = xstrdup(commit->buffer);
782 if (enc != utf8)
783 free(enc);
786 if (!!also + !!only + !!all + !!interactive > 1)
787 die("Only one of --include/--only/--all/--interactive can be used.");
788 if (argc == 0 && (also || (only && !amend)))
789 die("No paths with --include/--only does not make sense.");
790 if (argc == 0 && only && amend)
791 only_include_assumed = "Clever... amending the last one with dirty index.";
792 if (argc > 0 && !also && !only)
793 only_include_assumed = "Explicit paths specified without -i nor -o; assuming --only paths...";
794 if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
795 cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
796 else if (!strcmp(cleanup_arg, "verbatim"))
797 cleanup_mode = CLEANUP_NONE;
798 else if (!strcmp(cleanup_arg, "whitespace"))
799 cleanup_mode = CLEANUP_SPACE;
800 else if (!strcmp(cleanup_arg, "strip"))
801 cleanup_mode = CLEANUP_ALL;
802 else
803 die("Invalid cleanup mode %s", cleanup_arg);
805 if (!untracked_files_arg)
806 ; /* default already initialized */
807 else if (!strcmp(untracked_files_arg, "no"))
808 show_untracked_files = SHOW_NO_UNTRACKED_FILES;
809 else if (!strcmp(untracked_files_arg, "normal"))
810 show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
811 else if (!strcmp(untracked_files_arg, "all"))
812 show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
813 else
814 die("Invalid untracked files mode '%s'", untracked_files_arg);
816 if (all && argc > 0)
817 die("Paths with -a does not make sense.");
818 else if (interactive && argc > 0)
819 die("Paths with --interactive does not make sense.");
821 return argc;
824 int cmd_status(int argc, const char **argv, const char *prefix)
826 const char *index_file;
827 int commitable;
829 git_config(git_status_config, NULL);
831 if (wt_status_use_color == -1)
832 wt_status_use_color = git_use_color_default;
834 if (diff_use_color_default == -1)
835 diff_use_color_default = git_use_color_default;
837 argc = parse_and_validate_options(argc, argv, builtin_status_usage, prefix);
839 index_file = prepare_index(argc, argv, prefix);
841 commitable = run_status(stdout, index_file, prefix, 0);
843 rollback_index_files();
845 return commitable ? 0 : 1;
848 static void print_summary(const char *prefix, const unsigned char *sha1)
850 struct rev_info rev;
851 struct commit *commit;
852 static const char *format = "format:%h] %s";
853 unsigned char junk_sha1[20];
854 const char *head = resolve_ref("HEAD", junk_sha1, 0, NULL);
856 commit = lookup_commit(sha1);
857 if (!commit)
858 die("couldn't look up newly created commit");
859 if (!commit || parse_commit(commit))
860 die("could not parse newly created commit");
862 init_revisions(&rev, prefix);
863 setup_revisions(0, NULL, &rev, NULL);
865 rev.abbrev = 0;
866 rev.diff = 1;
867 rev.diffopt.output_format =
868 DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
870 rev.verbose_header = 1;
871 rev.show_root_diff = 1;
872 get_commit_format(format, &rev);
873 rev.always_show_header = 0;
874 rev.diffopt.detect_rename = 1;
875 rev.diffopt.rename_limit = 100;
876 rev.diffopt.break_opt = 0;
877 diff_setup_done(&rev.diffopt);
879 printf("[%s%s ",
880 !prefixcmp(head, "refs/heads/") ?
881 head + 11 :
882 !strcmp(head, "HEAD") ?
883 "detached HEAD" :
884 head,
885 initial_commit ? " (root-commit)" : "");
887 if (!log_tree_commit(&rev, commit)) {
888 struct strbuf buf = STRBUF_INIT;
889 format_commit_message(commit, format + 7, &buf, DATE_NORMAL);
890 printf("%s\n", buf.buf);
891 strbuf_release(&buf);
895 static int git_commit_config(const char *k, const char *v, void *cb)
897 if (!strcmp(k, "commit.template"))
898 return git_config_string(&template_file, k, v);
900 return git_status_config(k, v, cb);
903 int cmd_commit(int argc, const char **argv, const char *prefix)
905 struct strbuf sb = STRBUF_INIT;
906 const char *index_file, *reflog_msg;
907 char *nl, *p;
908 unsigned char commit_sha1[20];
909 struct ref_lock *ref_lock;
910 struct commit_list *parents = NULL, **pptr = &parents;
911 struct stat statbuf;
912 int allow_fast_forward = 1;
914 git_config(git_commit_config, NULL);
916 if (wt_status_use_color == -1)
917 wt_status_use_color = git_use_color_default;
919 argc = parse_and_validate_options(argc, argv, builtin_commit_usage, prefix);
921 index_file = prepare_index(argc, argv, prefix);
923 /* Set up everything for writing the commit object. This includes
924 running hooks, writing the trees, and interacting with the user. */
925 if (!prepare_to_commit(index_file, prefix)) {
926 rollback_index_files();
927 return 1;
930 /* Determine parents */
931 if (initial_commit) {
932 reflog_msg = "commit (initial)";
933 } else if (amend) {
934 struct commit_list *c;
935 struct commit *commit;
937 reflog_msg = "commit (amend)";
938 commit = lookup_commit(head_sha1);
939 if (!commit || parse_commit(commit))
940 die("could not parse HEAD commit");
942 for (c = commit->parents; c; c = c->next)
943 pptr = &commit_list_insert(c->item, pptr)->next;
944 } else if (in_merge) {
945 struct strbuf m = STRBUF_INIT;
946 FILE *fp;
948 reflog_msg = "commit (merge)";
949 pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next;
950 fp = fopen(git_path("MERGE_HEAD"), "r");
951 if (fp == NULL)
952 die("could not open %s for reading: %s",
953 git_path("MERGE_HEAD"), strerror(errno));
954 while (strbuf_getline(&m, fp, '\n') != EOF) {
955 unsigned char sha1[20];
956 if (get_sha1_hex(m.buf, sha1) < 0)
957 die("Corrupt MERGE_HEAD file (%s)", m.buf);
958 pptr = &commit_list_insert(lookup_commit(sha1), pptr)->next;
960 fclose(fp);
961 strbuf_release(&m);
962 if (!stat(git_path("MERGE_MODE"), &statbuf)) {
963 if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
964 die("could not read MERGE_MODE: %s",
965 strerror(errno));
966 if (!strcmp(sb.buf, "no-ff"))
967 allow_fast_forward = 0;
969 if (allow_fast_forward)
970 parents = reduce_heads(parents);
971 } else {
972 reflog_msg = "commit";
973 pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next;
976 /* Finally, get the commit message */
977 strbuf_reset(&sb);
978 if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
979 rollback_index_files();
980 die("could not read commit message");
983 /* Truncate the message just before the diff, if any. */
984 if (verbose) {
985 p = strstr(sb.buf, "\ndiff --git ");
986 if (p != NULL)
987 strbuf_setlen(&sb, p - sb.buf + 1);
990 if (cleanup_mode != CLEANUP_NONE)
991 stripspace(&sb, cleanup_mode == CLEANUP_ALL);
992 if (message_is_empty(&sb)) {
993 rollback_index_files();
994 fprintf(stderr, "Aborting commit due to empty commit message.\n");
995 exit(1);
998 if (commit_tree(sb.buf, active_cache_tree->sha1, parents, commit_sha1,
999 fmt_ident(author_name, author_email, author_date,
1000 IDENT_ERROR_ON_NO_NAME))) {
1001 rollback_index_files();
1002 die("failed to write commit object");
1005 ref_lock = lock_any_ref_for_update("HEAD",
1006 initial_commit ? NULL : head_sha1,
1009 nl = strchr(sb.buf, '\n');
1010 if (nl)
1011 strbuf_setlen(&sb, nl + 1 - sb.buf);
1012 else
1013 strbuf_addch(&sb, '\n');
1014 strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
1015 strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
1017 if (!ref_lock) {
1018 rollback_index_files();
1019 die("cannot lock HEAD ref");
1021 if (write_ref_sha1(ref_lock, commit_sha1, sb.buf) < 0) {
1022 rollback_index_files();
1023 die("cannot update HEAD ref");
1026 unlink(git_path("MERGE_HEAD"));
1027 unlink(git_path("MERGE_MSG"));
1028 unlink(git_path("MERGE_MODE"));
1029 unlink(git_path("SQUASH_MSG"));
1031 if (commit_index_files())
1032 die ("Repository has been updated, but unable to write\n"
1033 "new_index file. Check that disk is not full or quota is\n"
1034 "not exceeded, and then \"git reset HEAD\" to recover.");
1036 rerere();
1037 run_hook(get_index_file(), "post-commit", NULL);
1038 if (!quiet)
1039 print_summary(prefix, commit_sha1);
1041 return 0;