Record the command invocation path early
[git/dscho.git] / builtin-commit.c
blob9a11ca0bcd402d9bd4488df6e3526e4a24617b30
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 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 (!pathspec_match(pattern, m, ce->name, 0))
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() < 0)
229 die("index file corrupt");
230 commit_style = COMMIT_AS_IS;
231 return get_index_file();
234 if (read_cache() < 0)
235 die("index file corrupt");
237 if (*argv)
238 pathspec = get_pathspec(prefix, argv);
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-%d", getpid()), 1);
325 create_base_index();
326 add_remove_files(&partial);
327 refresh_cache(REFRESH_QUIET);
329 if (write_cache(fd, active_cache, active_nr) ||
330 close_lock_file(&false_lock))
331 die("unable to write temporary index file");
333 discard_cache();
334 read_cache_from(false_lock.filename);
336 return false_lock.filename;
339 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn)
341 struct wt_status s;
343 wt_status_prepare(&s);
344 if (wt_status_relative_paths)
345 s.prefix = prefix;
347 if (amend) {
348 s.amend = 1;
349 s.reference = "HEAD^1";
351 s.verbose = verbose;
352 s.untracked = (show_untracked_files == SHOW_ALL_UNTRACKED_FILES);
353 s.index_file = index_file;
354 s.fp = fp;
355 s.nowarn = nowarn;
357 wt_status_print(&s);
359 return s.commitable;
362 static int run_hook(const char *index_file, const char *name, ...)
364 struct child_process hook;
365 const char *argv[10], *env[2];
366 char index[PATH_MAX];
367 va_list args;
368 int i;
370 va_start(args, name);
371 argv[0] = git_path("hooks/%s", name);
372 i = 0;
373 do {
374 if (++i >= ARRAY_SIZE(argv))
375 die ("run_hook(): too many arguments");
376 argv[i] = va_arg(args, const char *);
377 } while (argv[i]);
378 va_end(args);
380 snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
381 env[0] = index;
382 env[1] = NULL;
384 if (access(argv[0], X_OK) < 0)
385 return 0;
387 memset(&hook, 0, sizeof(hook));
388 hook.argv = argv;
389 hook.no_stdin = 1;
390 hook.stdout_to_stderr = 1;
391 hook.env = env;
393 return run_command(&hook);
396 static int is_a_merge(const unsigned char *sha1)
398 struct commit *commit = lookup_commit(sha1);
399 if (!commit || parse_commit(commit))
400 die("could not parse HEAD commit");
401 return !!(commit->parents && commit->parents->next);
404 static const char sign_off_header[] = "Signed-off-by: ";
406 static void determine_author_info(void)
408 char *name, *email, *date;
410 name = getenv("GIT_AUTHOR_NAME");
411 email = getenv("GIT_AUTHOR_EMAIL");
412 date = getenv("GIT_AUTHOR_DATE");
414 if (use_message) {
415 const char *a, *lb, *rb, *eol;
417 a = strstr(use_message_buffer, "\nauthor ");
418 if (!a)
419 die("invalid commit: %s", use_message);
421 lb = strstr(a + 8, " <");
422 rb = strstr(a + 8, "> ");
423 eol = strchr(a + 8, '\n');
424 if (!lb || !rb || !eol)
425 die("invalid commit: %s", use_message);
427 name = xstrndup(a + 8, lb - (a + 8));
428 email = xstrndup(lb + 2, rb - (lb + 2));
429 date = xstrndup(rb + 2, eol - (rb + 2));
432 if (force_author) {
433 const char *lb = strstr(force_author, " <");
434 const char *rb = strchr(force_author, '>');
436 if (!lb || !rb)
437 die("malformed --author parameter");
438 name = xstrndup(force_author, lb - force_author);
439 email = xstrndup(lb + 2, rb - (lb + 2));
442 author_name = name;
443 author_email = email;
444 author_date = date;
447 static int prepare_to_commit(const char *index_file, const char *prefix)
449 struct stat statbuf;
450 int commitable, saved_color_setting;
451 struct strbuf sb;
452 char *buffer;
453 FILE *fp;
454 const char *hook_arg1 = NULL;
455 const char *hook_arg2 = NULL;
456 int ident_shown = 0;
458 if (!no_verify && run_hook(index_file, "pre-commit", NULL))
459 return 0;
461 strbuf_init(&sb, 0);
462 if (message.len) {
463 strbuf_addbuf(&sb, &message);
464 hook_arg1 = "message";
465 } else if (logfile && !strcmp(logfile, "-")) {
466 if (isatty(0))
467 fprintf(stderr, "(reading log message from standard input)\n");
468 if (strbuf_read(&sb, 0, 0) < 0)
469 die("could not read log from standard input");
470 hook_arg1 = "message";
471 } else if (logfile) {
472 if (strbuf_read_file(&sb, logfile, 0) < 0)
473 die("could not read log file '%s': %s",
474 logfile, strerror(errno));
475 hook_arg1 = "message";
476 } else if (use_message) {
477 buffer = strstr(use_message_buffer, "\n\n");
478 if (!buffer || buffer[2] == '\0')
479 die("commit has empty message");
480 strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
481 hook_arg1 = "commit";
482 hook_arg2 = use_message;
483 } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
484 if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
485 die("could not read MERGE_MSG: %s", strerror(errno));
486 hook_arg1 = "merge";
487 } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
488 if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
489 die("could not read SQUASH_MSG: %s", strerror(errno));
490 hook_arg1 = "squash";
491 } else if (template_file && !stat(template_file, &statbuf)) {
492 if (strbuf_read_file(&sb, template_file, 0) < 0)
493 die("could not read %s: %s",
494 template_file, strerror(errno));
495 hook_arg1 = "template";
499 * This final case does not modify the template message,
500 * it just sets the argument to the prepare-commit-msg hook.
502 else if (in_merge)
503 hook_arg1 = "merge";
505 fp = fopen(git_path(commit_editmsg), "w");
506 if (fp == NULL)
507 die("could not open %s: %s",
508 git_path(commit_editmsg), strerror(errno));
510 if (cleanup_mode != CLEANUP_NONE)
511 stripspace(&sb, 0);
513 if (signoff) {
514 struct strbuf sob;
515 int i;
517 strbuf_init(&sob, 0);
518 strbuf_addstr(&sob, sign_off_header);
519 strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
520 getenv("GIT_COMMITTER_EMAIL")));
521 strbuf_addch(&sob, '\n');
522 for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
523 ; /* do nothing */
524 if (prefixcmp(sb.buf + i, sob.buf)) {
525 if (prefixcmp(sb.buf + i, sign_off_header))
526 strbuf_addch(&sb, '\n');
527 strbuf_addbuf(&sb, &sob);
529 strbuf_release(&sob);
532 if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
533 die("could not write commit template: %s", strerror(errno));
535 strbuf_release(&sb);
537 determine_author_info();
539 /* This checks if committer ident is explicitly given */
540 git_committer_info(0);
541 if (use_editor) {
542 char *author_ident;
543 const char *committer_ident;
545 if (in_merge)
546 fprintf(fp,
547 "#\n"
548 "# It looks like you may be committing a MERGE.\n"
549 "# If this is not correct, please remove the file\n"
550 "# %s\n"
551 "# and try again.\n"
552 "#\n",
553 git_path("MERGE_HEAD"));
555 fprintf(fp,
556 "\n"
557 "# Please enter the commit message for your changes.\n"
558 "# (Comment lines starting with '#' will ");
559 if (cleanup_mode == CLEANUP_ALL)
560 fprintf(fp, "not be included)\n");
561 else /* CLEANUP_SPACE, that is. */
562 fprintf(fp, "be kept.\n"
563 "# You can remove them yourself if you want to)\n");
564 if (only_include_assumed)
565 fprintf(fp, "# %s\n", only_include_assumed);
567 author_ident = xstrdup(fmt_name(author_name, author_email));
568 committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
569 getenv("GIT_COMMITTER_EMAIL"));
570 if (strcmp(author_ident, committer_ident))
571 fprintf(fp,
572 "%s"
573 "# Author: %s\n",
574 ident_shown++ ? "" : "#\n",
575 author_ident);
576 free(author_ident);
578 if (!user_ident_explicitly_given)
579 fprintf(fp,
580 "%s"
581 "# Committer: %s\n",
582 ident_shown++ ? "" : "#\n",
583 committer_ident);
585 if (ident_shown)
586 fprintf(fp, "#\n");
588 saved_color_setting = wt_status_use_color;
589 wt_status_use_color = 0;
590 commitable = run_status(fp, index_file, prefix, 1);
591 wt_status_use_color = saved_color_setting;
592 } else {
593 struct rev_info rev;
594 unsigned char sha1[20];
595 const char *parent = "HEAD";
597 if (!active_nr && read_cache() < 0)
598 die("Cannot read index");
600 if (amend)
601 parent = "HEAD^1";
603 if (get_sha1(parent, sha1))
604 commitable = !!active_nr;
605 else {
606 init_revisions(&rev, "");
607 rev.abbrev = 0;
608 setup_revisions(0, NULL, &rev, parent);
609 DIFF_OPT_SET(&rev.diffopt, QUIET);
610 DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
611 run_diff_index(&rev, 1 /* cached */);
613 commitable = !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
617 fclose(fp);
619 if (!commitable && !in_merge && !allow_empty &&
620 !(amend && is_a_merge(head_sha1))) {
621 run_status(stdout, index_file, prefix, 0);
622 unlink(commit_editmsg);
623 return 0;
627 * Re-read the index as pre-commit hook could have updated it,
628 * and write it out as a tree. We must do this before we invoke
629 * the editor and after we invoke run_status above.
631 discard_cache();
632 read_cache_from(index_file);
633 if (!active_cache_tree)
634 active_cache_tree = cache_tree();
635 if (cache_tree_update(active_cache_tree,
636 active_cache, active_nr, 0, 0) < 0) {
637 error("Error building trees");
638 return 0;
641 if (run_hook(index_file, "prepare-commit-msg",
642 git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
643 return 0;
645 if (use_editor) {
646 char index[PATH_MAX];
647 const char *env[2] = { index, NULL };
648 snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
649 if (launch_editor(git_path(commit_editmsg), NULL, env)) {
650 fprintf(stderr,
651 "Please supply the message using either -m or -F option.\n");
652 exit(1);
656 if (!no_verify &&
657 run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
658 return 0;
661 return 1;
665 * Find out if the message starting at position 'start' in the strbuf
666 * contains only whitespace and Signed-off-by lines.
668 static int message_is_empty(struct strbuf *sb, int start)
670 struct strbuf tmpl;
671 const char *nl;
672 int eol, i;
674 if (cleanup_mode == CLEANUP_NONE && sb->len)
675 return 0;
677 /* See if the template is just a prefix of the message. */
678 strbuf_init(&tmpl, 0);
679 if (template_file && strbuf_read_file(&tmpl, template_file, 0) > 0) {
680 stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
681 if (start + tmpl.len <= sb->len &&
682 memcmp(tmpl.buf, sb->buf + start, tmpl.len) == 0)
683 start += tmpl.len;
685 strbuf_release(&tmpl);
687 /* Check if the rest is just whitespace and Signed-of-by's. */
688 for (i = start; i < sb->len; i++) {
689 nl = memchr(sb->buf + i, '\n', sb->len - i);
690 if (nl)
691 eol = nl - sb->buf;
692 else
693 eol = sb->len;
695 if (strlen(sign_off_header) <= eol - i &&
696 !prefixcmp(sb->buf + i, sign_off_header)) {
697 i = eol;
698 continue;
700 while (i < eol)
701 if (!isspace(sb->buf[i++]))
702 return 0;
705 return 1;
708 static int parse_and_validate_options(int argc, const char *argv[],
709 const char * const usage[])
711 int f = 0;
713 argc = parse_options(argc, argv, builtin_commit_options, usage, 0);
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 argc = parse_and_validate_options(argc, argv, builtin_status_usage);
836 index_file = prepare_index(argc, argv, prefix);
838 commitable = run_status(stdout, index_file, prefix, 0);
840 rollback_index_files();
842 return commitable ? 0 : 1;
845 static void print_summary(const char *prefix, const unsigned char *sha1)
847 struct rev_info rev;
848 struct commit *commit;
850 commit = lookup_commit(sha1);
851 if (!commit)
852 die("couldn't look up newly created commit");
853 if (!commit || parse_commit(commit))
854 die("could not parse newly created commit");
856 init_revisions(&rev, prefix);
857 setup_revisions(0, NULL, &rev, NULL);
859 rev.abbrev = 0;
860 rev.diff = 1;
861 rev.diffopt.output_format =
862 DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
864 rev.verbose_header = 1;
865 rev.show_root_diff = 1;
866 get_commit_format("format:%h: %s", &rev);
867 rev.always_show_header = 0;
868 rev.diffopt.detect_rename = 1;
869 rev.diffopt.rename_limit = 100;
870 rev.diffopt.break_opt = 0;
871 diff_setup_done(&rev.diffopt);
873 printf("Created %scommit ", initial_commit ? "initial " : "");
875 if (!log_tree_commit(&rev, commit)) {
876 struct strbuf buf = STRBUF_INIT;
877 format_commit_message(commit, "%h: %s", &buf);
878 printf("%s\n", buf.buf);
879 strbuf_release(&buf);
883 static int git_commit_config(const char *k, const char *v, void *cb)
885 if (!strcmp(k, "commit.template"))
886 return git_config_string(&template_file, k, v);
888 return git_status_config(k, v, cb);
891 static const char commit_utf8_warn[] =
892 "Warning: commit message does not conform to UTF-8.\n"
893 "You may want to amend it after fixing the message, or set the config\n"
894 "variable i18n.commitencoding to the encoding your project uses.\n";
896 static void add_parent(struct strbuf *sb, const unsigned char *sha1)
898 struct object *obj = parse_object(sha1);
899 const char *parent = sha1_to_hex(sha1);
900 const char *cp;
902 if (!obj)
903 die("Unable to find commit parent %s", parent);
904 if (obj->type != OBJ_COMMIT)
905 die("Parent %s isn't a proper commit", parent);
907 for (cp = sb->buf; cp && (cp = strstr(cp, "\nparent ")); cp += 8) {
908 if (!memcmp(cp + 8, parent, 40) && cp[48] == '\n') {
909 error("duplicate parent %s ignored", parent);
910 return;
913 strbuf_addf(sb, "parent %s\n", parent);
916 int cmd_commit(int argc, const char **argv, const char *prefix)
918 int header_len;
919 struct strbuf sb;
920 const char *index_file, *reflog_msg;
921 char *nl, *p;
922 unsigned char commit_sha1[20];
923 struct ref_lock *ref_lock;
925 git_config(git_commit_config, NULL);
927 argc = parse_and_validate_options(argc, argv, builtin_commit_usage);
929 index_file = prepare_index(argc, argv, prefix);
931 /* Set up everything for writing the commit object. This includes
932 running hooks, writing the trees, and interacting with the user. */
933 if (!prepare_to_commit(index_file, prefix)) {
934 rollback_index_files();
935 return 1;
939 * The commit object
941 strbuf_init(&sb, 0);
942 strbuf_addf(&sb, "tree %s\n",
943 sha1_to_hex(active_cache_tree->sha1));
945 /* Determine parents */
946 if (initial_commit) {
947 reflog_msg = "commit (initial)";
948 } else if (amend) {
949 struct commit_list *c;
950 struct commit *commit;
952 reflog_msg = "commit (amend)";
953 commit = lookup_commit(head_sha1);
954 if (!commit || parse_commit(commit))
955 die("could not parse HEAD commit");
957 for (c = commit->parents; c; c = c->next)
958 add_parent(&sb, c->item->object.sha1);
959 } else if (in_merge) {
960 struct strbuf m;
961 FILE *fp;
963 reflog_msg = "commit (merge)";
964 add_parent(&sb, head_sha1);
965 strbuf_init(&m, 0);
966 fp = fopen(git_path("MERGE_HEAD"), "r");
967 if (fp == NULL)
968 die("could not open %s for reading: %s",
969 git_path("MERGE_HEAD"), strerror(errno));
970 while (strbuf_getline(&m, fp, '\n') != EOF) {
971 unsigned char sha1[20];
972 if (get_sha1_hex(m.buf, sha1) < 0)
973 die("Corrupt MERGE_HEAD file (%s)", m.buf);
974 add_parent(&sb, sha1);
976 fclose(fp);
977 strbuf_release(&m);
978 } else {
979 reflog_msg = "commit";
980 strbuf_addf(&sb, "parent %s\n", sha1_to_hex(head_sha1));
983 strbuf_addf(&sb, "author %s\n",
984 fmt_ident(author_name, author_email, author_date, IDENT_ERROR_ON_NO_NAME));
985 strbuf_addf(&sb, "committer %s\n", git_committer_info(IDENT_ERROR_ON_NO_NAME));
986 if (!is_encoding_utf8(git_commit_encoding))
987 strbuf_addf(&sb, "encoding %s\n", git_commit_encoding);
988 strbuf_addch(&sb, '\n');
990 /* Finally, get the commit message */
991 header_len = sb.len;
992 if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
993 rollback_index_files();
994 die("could not read commit message");
997 /* Truncate the message just before the diff, if any. */
998 p = strstr(sb.buf, "\ndiff --git a/");
999 if (p != NULL)
1000 strbuf_setlen(&sb, p - sb.buf + 1);
1002 if (cleanup_mode != CLEANUP_NONE)
1003 stripspace(&sb, cleanup_mode == CLEANUP_ALL);
1004 if (sb.len < header_len || message_is_empty(&sb, header_len)) {
1005 rollback_index_files();
1006 die("no commit message? aborting commit.");
1008 strbuf_addch(&sb, '\0');
1009 if (is_encoding_utf8(git_commit_encoding) && !is_utf8(sb.buf))
1010 fprintf(stderr, commit_utf8_warn);
1012 if (write_sha1_file(sb.buf, sb.len - 1, commit_type, commit_sha1)) {
1013 rollback_index_files();
1014 die("failed to write commit object");
1017 ref_lock = lock_any_ref_for_update("HEAD",
1018 initial_commit ? NULL : head_sha1,
1021 nl = strchr(sb.buf + header_len, '\n');
1022 if (nl)
1023 strbuf_setlen(&sb, nl + 1 - sb.buf);
1024 else
1025 strbuf_addch(&sb, '\n');
1026 strbuf_remove(&sb, 0, header_len);
1027 strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
1028 strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
1030 if (!ref_lock) {
1031 rollback_index_files();
1032 die("cannot lock HEAD ref");
1034 if (write_ref_sha1(ref_lock, commit_sha1, sb.buf) < 0) {
1035 rollback_index_files();
1036 die("cannot update HEAD ref");
1039 unlink(git_path("MERGE_HEAD"));
1040 unlink(git_path("MERGE_MSG"));
1041 unlink(git_path("SQUASH_MSG"));
1043 if (commit_index_files())
1044 die ("Repository has been updated, but unable to write\n"
1045 "new_index file. Check that disk is not full or quota is\n"
1046 "not exceeded, and then \"git reset HEAD\" to recover.");
1048 rerere();
1049 run_hook(get_index_file(), "post-commit", NULL);
1050 if (!quiet)
1051 print_summary(prefix, commit_sha1);
1053 return 0;