![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
| author | Junio C Hamano <gitster@pobox.com> | |
| Wed, 21 Dec 2011 18:50:20 +0000 (10:50 -0800) | ||
| committer | Junio C Hamano <gitster@pobox.com> | |
| Wed, 21 Dec 2011 18:50:20 +0000 (10:50 -0800) |
* ms/commit-cc-option-helpstring:
builtin/commit: add missing '/' in help message
builtin/commit: add missing '/' in help message
| 1 | 2 | |||
|---|---|---|---|---|
| builtin/commit.c | patch | | diff1 | | | | blob | history |
diff --cc builtin/commit.c
index 8f2bebecf313a0e4b742f9327ec178c7e3547dd2,0000000000000000000000000000000000000000..b02e2c4e89a55e04f7c5c3ee95617f947b9f5d99
mode 100644,000000..100644
mode 100644,000000..100644
--- 1/builtin/commit.c
--- /dev/null
+++ b/builtin/commit.c
- OPT_BOOLEAN(0, "reset-author", &renew_authorship, "the commit is authored by me now (used with -C-c/--amend)"),
+/*
+ * Builtin "git commit"
+ *
+ * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
+ * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
+ */
+
+#include "cache.h"
+#include "cache-tree.h"
+#include "color.h"
+#include "dir.h"
+#include "builtin.h"
+#include "diff.h"
+#include "diffcore.h"
+#include "commit.h"
+#include "revision.h"
+#include "wt-status.h"
+#include "run-command.h"
+#include "refs.h"
+#include "log-tree.h"
+#include "strbuf.h"
+#include "utf8.h"
+#include "parse-options.h"
+#include "string-list.h"
+#include "rerere.h"
+#include "unpack-trees.h"
+#include "quote.h"
+#include "submodule.h"
+
+static const char * const builtin_commit_usage[] = {
+ "git commit [options] [--] <filepattern>...",
+ NULL
+};
+
+static const char * const builtin_status_usage[] = {
+ "git status [options] [--] <filepattern>...",
+ NULL
+};
+
+static const char implicit_ident_advice[] =
+N_("Your name and email address were configured automatically based\n"
+"on your username and hostname. Please check that they are accurate.\n"
+"You can suppress this message by setting them explicitly:\n"
+"\n"
+" git config --global user.name \"Your Name\"\n"
+" git config --global user.email you@example.com\n"
+"\n"
+"After doing this, you may fix the identity used for this commit with:\n"
+"\n"
+" git commit --amend --reset-author\n");
+
+static const char empty_amend_advice[] =
+N_("You asked to amend the most recent commit, but doing so would make\n"
+"it empty. You can repeat your command with --allow-empty, or you can\n"
+"remove the commit entirely with \"git reset HEAD^\".\n");
+
+static const char empty_cherry_pick_advice[] =
+N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\n"
+"If you wish to commit it anyway, use:\n"
+"\n"
+" git commit --allow-empty\n"
+"\n"
+"Otherwise, please use 'git reset'\n");
+
+static const char *use_message_buffer;
+static const char commit_editmsg[] = "COMMIT_EDITMSG";
+static struct lock_file index_lock; /* real index */
+static struct lock_file false_lock; /* used only for partial commits */
+static enum {
+ COMMIT_AS_IS = 1,
+ COMMIT_NORMAL,
+ COMMIT_PARTIAL
+} commit_style;
+
+static const char *logfile, *force_author;
+static const char *template_file;
+/*
+ * The _message variables are commit names from which to take
+ * the commit message and/or authorship.
+ */
+static const char *author_message, *author_message_buffer;
+static char *edit_message, *use_message;
+static char *fixup_message, *squash_message;
+static int all, edit_flag, also, interactive, patch_interactive, only, amend, signoff;
+static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
+static int no_post_rewrite, allow_empty_message;
+static char *untracked_files_arg, *force_date, *ignore_submodule_arg;
+/*
+ * The default commit message cleanup mode will remove the lines
+ * beginning with # (shell comments) and leading and trailing
+ * whitespaces (empty lines or containing only whitespaces)
+ * if editor is used, and only the whitespaces if the message
+ * is specified explicitly.
+ */
+static enum {
+ CLEANUP_SPACE,
+ CLEANUP_NONE,
+ CLEANUP_ALL
+} cleanup_mode;
+static char *cleanup_arg;
+
+static enum commit_whence whence;
+static int use_editor = 1, include_status = 1;
+static int show_ignored_in_status;
+static const char *only_include_assumed;
+static struct strbuf message;
+
+static int null_termination;
+static enum {
+ STATUS_FORMAT_LONG,
+ STATUS_FORMAT_SHORT,
+ STATUS_FORMAT_PORCELAIN
+} status_format = STATUS_FORMAT_LONG;
+static int status_show_branch;
+
+static int opt_parse_m(const struct option *opt, const char *arg, int unset)
+{
+ struct strbuf *buf = opt->value;
+ if (unset)
+ strbuf_setlen(buf, 0);
+ else {
+ strbuf_addstr(buf, arg);
+ strbuf_addstr(buf, "\n\n");
+ }
+ return 0;
+}
+
+static struct option builtin_commit_options[] = {
+ OPT__QUIET(&quiet, "suppress summary after successful commit"),
+ OPT__VERBOSE(&verbose, "show diff in commit message template"),
+
+ OPT_GROUP("Commit message options"),
+ OPT_FILENAME('F', "file", &logfile, "read message from file"),
+ OPT_STRING(0, "author", &force_author, "author", "override author for commit"),
+ OPT_STRING(0, "date", &force_date, "date", "override date for commit"),
+ OPT_CALLBACK('m', "message", &message, "message", "commit message", opt_parse_m),
+ OPT_STRING('c', "reedit-message", &edit_message, "commit", "reuse and edit message from specified commit"),
+ OPT_STRING('C', "reuse-message", &use_message, "commit", "reuse message from specified commit"),
+ OPT_STRING(0, "fixup", &fixup_message, "commit", "use autosquash formatted message to fixup specified commit"),
+ OPT_STRING(0, "squash", &squash_message, "commit", "use autosquash formatted message to squash specified commit"),
++ OPT_BOOLEAN(0, "reset-author", &renew_authorship, "the commit is authored by me now (used with -C/-c/--amend)"),
+ OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
+ OPT_FILENAME('t', "template", &template_file, "use specified template file"),
+ OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),
+ OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"),
+ OPT_BOOLEAN(0, "status", &include_status, "include status in commit message template"),
+ /* end commit message options */
+
+ OPT_GROUP("Commit contents options"),
+ OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
+ OPT_BOOLEAN('i', "include", &also, "add specified files to index for commit"),
+ OPT_BOOLEAN(0, "interactive", &interactive, "interactively add files"),
+ OPT_BOOLEAN('p', "patch", &patch_interactive, "interactively add changes"),
+ OPT_BOOLEAN('o', "only", &only, "commit only specified files"),
+ OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
+ OPT_BOOLEAN(0, "dry-run", &dry_run, "show what would be committed"),
+ OPT_SET_INT(0, "short", &status_format, "show status concisely",
+ STATUS_FORMAT_SHORT),
+ OPT_BOOLEAN(0, "branch", &status_show_branch, "show branch information"),
+ OPT_SET_INT(0, "porcelain", &status_format,
+ "machine-readable output", STATUS_FORMAT_PORCELAIN),
+ OPT_BOOLEAN('z', "null", &null_termination,
+ "terminate entries with NUL"),
+ OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
+ OPT_BOOLEAN(0, "no-post-rewrite", &no_post_rewrite, "bypass post-rewrite hook"),
+ { 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" },
+ /* end commit contents options */
+
+ { OPTION_BOOLEAN, 0, "allow-empty", &allow_empty, NULL,
+ "ok to record an empty change",
+ PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
+ { OPTION_BOOLEAN, 0, "allow-empty-message", &allow_empty_message, NULL,
+ "ok to record a change with an empty message",
+ PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
+
+ OPT_END()
+};
+
+static void determine_whence(struct wt_status *s)
+{
+ if (file_exists(git_path("MERGE_HEAD")))
+ whence = FROM_MERGE;
+ else if (file_exists(git_path("CHERRY_PICK_HEAD")))
+ whence = FROM_CHERRY_PICK;
+ else
+ whence = FROM_COMMIT;
+ if (s)
+ s->whence = whence;
+}
+
+static const char *whence_s(void)
+{
+ char *s = "";
+
+ switch (whence) {
+ case FROM_COMMIT:
+ break;
+ case FROM_MERGE:
+ s = "merge";
+ break;
+ case FROM_CHERRY_PICK:
+ s = "cherry-pick";
+ break;
+ }
+
+ return s;
+}
+
+static void rollback_index_files(void)
+{
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ rollback_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ rollback_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+}
+
+static int commit_index_files(void)
+{
+ int err = 0;
+
+ switch (commit_style) {
+ case COMMIT_AS_IS:
+ break; /* nothing to do */
+ case COMMIT_NORMAL:
+ err = commit_lock_file(&index_lock);
+ break;
+ case COMMIT_PARTIAL:
+ err = commit_lock_file(&index_lock);
+ rollback_lock_file(&false_lock);
+ break;
+ }
+
+ return err;
+}
+
+/*
+ * Take a union of paths in the index and the named tree (typically, "HEAD"),
+ * and return the paths that match the given pattern in list.
+ */
+static int list_paths(struct string_list *list, const char *with_tree,
+ const char *prefix, const char **pattern)
+{
+ int i;
+ char *m;
+
+ for (i = 0; pattern[i]; i++)
+ ;
+ m = xcalloc(1, i);
+
+ if (with_tree) {
+ char *max_prefix = common_prefix(pattern);
+ overlay_tree_on_cache(with_tree, max_prefix ? max_prefix : prefix);
+ free(max_prefix);
+ }
+
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ struct string_list_item *item;
+
+ if (ce->ce_flags & CE_UPDATE)
+ continue;
+ if (!match_pathspec(pattern, ce->name, ce_namelen(ce), 0, m))
+ continue;
+ item = string_list_insert(list, ce->name);
+ if (ce_skip_worktree(ce))
+ item->util = item; /* better a valid pointer than a fake one */
+ }
+
+ return report_path_error(m, pattern, prefix);
+}
+
+static void add_remove_files(struct string_list *list)
+{
+ int i;
+ for (i = 0; i < list->nr; i++) {
+ struct stat st;
+ struct string_list_item *p = &(list->items[i]);
+
+ /* p->util is skip-worktree */
+ if (p->util)
+ continue;
+
+ if (!lstat(p->string, &st)) {
+ if (add_to_cache(p->string, &st, 0))
+ die(_("updating files failed"));
+ } else
+ remove_file_from_cache(p->string);
+ }
+}
+
+static void create_base_index(const struct commit *current_head)
+{
+ struct tree *tree;
+ struct unpack_trees_options opts;
+ struct tree_desc t;
+
+ if (!current_head) {
+ discard_cache();
+ return;
+ }
+
+ memset(&opts, 0, sizeof(opts));
+ opts.head_idx = 1;
+ opts.index_only = 1;
+ opts.merge = 1;
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+
+ opts.fn = oneway_merge;
+ tree = parse_tree_indirect(current_head->object.sha1);
+ if (!tree)
+ die(_("failed to unpack HEAD tree object"));
+ parse_tree(tree);
+ init_tree_desc(&t, tree->buffer, tree->size);
+ if (unpack_trees(1, &t, &opts))
+ exit(128); /* We've already reported the error, finish dying */
+}
+
+static void refresh_cache_or_die(int refresh_flags)
+{
+ /*
+ * refresh_flags contains REFRESH_QUIET, so the only errors
+ * are for unmerged entries.
+ */
+ if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
+ die_resolve_conflict("commit");
+}
+
+static char *prepare_index(int argc, const char **argv, const char *prefix,
+ const struct commit *current_head, int is_status)
+{
+ int fd;
+ struct string_list partial;
+ const char **pathspec = NULL;
+ char *old_index_env = NULL;
+ int refresh_flags = REFRESH_QUIET;
+
+ if (is_status)
+ refresh_flags |= REFRESH_UNMERGED;
+
+ if (*argv)
+ pathspec = get_pathspec(prefix, argv);
+
+ if (read_cache_preload(pathspec) < 0)
+ die(_("index file corrupt"));
+
+ if (interactive) {
+ fd = hold_locked_index(&index_lock, 1);
+
+ refresh_cache_or_die(refresh_flags);
+
+ if (write_cache(fd, active_cache, active_nr) ||
+ close_lock_file(&index_lock))
+ die(_("unable to create temporary index"));
+
+ old_index_env = getenv(INDEX_ENVIRONMENT);
+ setenv(INDEX_ENVIRONMENT, index_lock.filename, 1);
+
+ if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
+ die(_("interactive add failed"));
+
+ if (old_index_env && *old_index_env)
+ setenv(INDEX_ENVIRONMENT, old_index_env, 1);
+ else
+ unsetenv(INDEX_ENVIRONMENT);
+
+ discard_cache();
+ read_cache_from(index_lock.filename);
+
+ commit_style = COMMIT_NORMAL;
+ return index_lock.filename;
+ }
+
+ /*
+ * Non partial, non as-is commit.
+ *
+ * (1) get the real index;
+ * (2) update the_index as necessary;
+ * (3) write the_index out to the real index (still locked);
+ * (4) return the name of the locked index file.
+ *
+ * The caller should run hooks on the locked real index, and
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index.
+ */
+ if (all || (also && pathspec && *pathspec)) {
+ fd = hold_locked_index(&index_lock, 1);
+ add_files_to_cache(also ? prefix : NULL, pathspec, 0);
+ refresh_cache_or_die(refresh_flags);
+ if (write_cache(fd, active_cache, active_nr) ||
+ close_lock_file(&index_lock))
+ die(_("unable to write new_index file"));
+ commit_style = COMMIT_NORMAL;
+ return index_lock.filename;
+ }
+
+ /*
+ * As-is commit.
+ *
+ * (1) return the name of the real index file.
+ *
+ * The caller should run hooks on the real index,
+ * and create commit from the_index.
+ * We still need to refresh the index here.
+ */
+ if (!pathspec || !*pathspec) {
+ fd = hold_locked_index(&index_lock, 1);
+ refresh_cache_or_die(refresh_flags);
+ if (active_cache_changed) {
+ if (write_cache(fd, active_cache, active_nr) ||
+ commit_locked_index(&index_lock))
+ die(_("unable to write new_index file"));
+ } else {
+ rollback_lock_file(&index_lock);
+ }
+ commit_style = COMMIT_AS_IS;
+ return get_index_file();
+ }
+
+ /*
+ * A partial commit.
+ *
+ * (0) find the set of affected paths;
+ * (1) get lock on the real index file;
+ * (2) update the_index with the given paths;
+ * (3) write the_index out to the real index (still locked);
+ * (4) get lock on the false index file;
+ * (5) reset the_index from HEAD;
+ * (6) update the_index the same way as (2);
+ * (7) write the_index out to the false index file;
+ * (8) return the name of the false index file (still locked);
+ *
+ * The caller should run hooks on the locked false index, and
+ * create commit from it. Then
+ * (A) if all goes well, commit the real index;
+ * (B) on failure, rollback the real index;
+ * In either case, rollback the false index.
+ */
+ commit_style = COMMIT_PARTIAL;
+
+ if (whence != FROM_COMMIT)
+ die(_("cannot do a partial commit during a %s."), whence_s());
+
+ memset(&partial, 0, sizeof(partial));
+ partial.strdup_strings = 1;
+ if (list_paths(&partial, !current_head ? NULL : "HEAD", prefix, pathspec))
+ exit(1);
+
+ discard_cache();
+ if (read_cache() < 0)
+ die(_("cannot read the index"));
+
+ fd = hold_locked_index(&index_lock, 1);
+ add_remove_files(&partial);
+ refresh_cache(REFRESH_QUIET);
+ if (write_cache(fd, active_cache, active_nr) ||
+ close_lock_file(&index_lock))
+ die(_("unable to write new_index file"));
+
+ fd = hold_lock_file_for_update(&false_lock,
+ git_path("next-index-%"PRIuMAX,
+ (uintmax_t) getpid()),
+ LOCK_DIE_ON_ERROR);
+
+ create_base_index(current_head);
+ add_remove_files(&partial);
+ refresh_cache(REFRESH_QUIET);
+
+ if (write_cache(fd, active_cache, active_nr) ||
+ close_lock_file(&false_lock))
+ die(_("unable to write temporary index file"));
+
+ discard_cache();
+ read_cache_from(false_lock.filename);
+
+ return false_lock.filename;
+}
+
+static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
+ struct wt_status *s)
+{
+ unsigned char sha1[20];
+
+ if (s->relative_paths)
+ s->prefix = prefix;
+
+ if (amend) {
+ s->amend = 1;
+ s->reference = "HEAD^1";
+ }
+ s->verbose = verbose;
+ s->index_file = index_file;
+ s->fp = fp;
+ s->nowarn = nowarn;
+ s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
+
+ wt_status_collect(s);
+
+ switch (status_format) {
+ case STATUS_FORMAT_SHORT:
+ wt_shortstatus_print(s, null_termination, status_show_branch);
+ break;
+ case STATUS_FORMAT_PORCELAIN:
+ wt_porcelain_print(s, null_termination);
+ break;
+ case STATUS_FORMAT_LONG:
+ wt_status_print(s);
+ break;
+ }
+
+ return s->commitable;
+}
+
+static int is_a_merge(const struct commit *current_head)
+{
+ return !!(current_head->parents && current_head->parents->next);
+}
+
+static const char sign_off_header[] = "Signed-off-by: ";
+
+static void determine_author_info(struct strbuf *author_ident)
+{
+ char *name, *email, *date;
+
+ name = getenv("GIT_AUTHOR_NAME");
+ email = getenv("GIT_AUTHOR_EMAIL");
+ date = getenv("GIT_AUTHOR_DATE");
+
+ if (author_message) {
+ const char *a, *lb, *rb, *eol;
+
+ a = strstr(author_message_buffer, "\nauthor ");
+ if (!a)
+ die(_("invalid commit: %s"), author_message);
+
+ lb = strchrnul(a + strlen("\nauthor "), '<');
+ rb = strchrnul(lb, '>');
+ eol = strchrnul(rb, '\n');
+ if (!*lb || !*rb || !*eol)
+ die(_("invalid commit: %s"), author_message);
+
+ if (lb == a + strlen("\nauthor "))
+ /* \nauthor <foo@example.com> */
+ name = xcalloc(1, 1);
+ else
+ name = xmemdupz(a + strlen("\nauthor "),
+ (lb - strlen(" ") -
+ (a + strlen("\nauthor "))));
+ email = xmemdupz(lb + strlen("<"), rb - (lb + strlen("<")));
+ date = xmemdupz(rb + strlen("> "), eol - (rb + strlen("> ")));
+ }
+
+ if (force_author) {
+ const char *lb = strstr(force_author, " <");
+ const char *rb = strchr(force_author, '>');
+
+ if (!lb || !rb)
+ die(_("malformed --author parameter"));
+ name = xstrndup(force_author, lb - force_author);
+ email = xstrndup(lb + 2, rb - (lb + 2));
+ }
+
+ if (force_date)
+ date = force_date;
+ strbuf_addstr(author_ident, fmt_ident(name, email, date,
+ IDENT_ERROR_ON_NO_NAME));
+}
+
+static int ends_rfc2822_footer(struct strbuf *sb)
+{
+ int ch;
+ int hit = 0;
+ int i, j, k;
+ int len = sb->len;
+ int first = 1;
+ const char *buf = sb->buf;
+
+ for (i = len - 1; i > 0; i--) {
+ if (hit && buf[i] == '\n')
+ break;
+ hit = (buf[i] == '\n');
+ }
+
+ while (i < len - 1 && buf[i] == '\n')
+ i++;
+
+ for (; i < len; i = k) {
+ for (k = i; k < len && buf[k] != '\n'; k++)
+ ; /* do nothing */
+ k++;
+
+ if ((buf[k] == ' ' || buf[k] == '\t') && !first)
+ continue;
+
+ first = 0;
+
+ for (j = 0; i + j < len; j++) {
+ ch = buf[i + j];
+ if (ch == ':')
+ break;
+ if (isalnum(ch) ||
+ (ch == '-'))
+ continue;
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static char *cut_ident_timestamp_part(char *string)
+{
+ char *ket = strrchr(string, '>');
+ if (!ket || ket[1] != ' ')
+ die(_("Malformed ident string: '%s'"), string);
+ *++ket = '\0';
+ return ket;
+}
+
+static int prepare_to_commit(const char *index_file, const char *prefix,
+ struct commit *current_head,
+ struct wt_status *s,
+ struct strbuf *author_ident)
+{
+ struct stat statbuf;
+ struct strbuf committer_ident = STRBUF_INIT;
+ int commitable, saved_color_setting;
+ struct strbuf sb = STRBUF_INIT;
+ char *buffer;
+ const char *hook_arg1 = NULL;
+ const char *hook_arg2 = NULL;
+ int ident_shown = 0;
+ int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
+
+ if (!no_verify && run_hook(index_file, "pre-commit", NULL))
+ return 0;
+
+ if (squash_message) {
+ /*
+ * Insert the proper subject line before other commit
+ * message options add their content.
+ */
+ if (use_message && !strcmp(use_message, squash_message))
+ strbuf_addstr(&sb, "squash! ");
+ else {
+ struct pretty_print_context ctx = {0};
+ struct commit *c;
+ c = lookup_commit_reference_by_name(squash_message);
+ if (!c)
+ die(_("could not lookup commit %s"), squash_message);
+ ctx.output_encoding = get_commit_output_encoding();
+ format_commit_message(c, "squash! %s\n\n", &sb,
+ &ctx);
+ }
+ }
+
+ if (message.len) {
+ strbuf_addbuf(&sb, &message);
+ hook_arg1 = "message";
+ } else if (logfile && !strcmp(logfile, "-")) {
+ if (isatty(0))
+ fprintf(stderr, _("(reading log message from standard input)\n"));
+ if (strbuf_read(&sb, 0, 0) < 0)
+ die_errno(_("could not read log from standard input"));
+ hook_arg1 = "message";
+ } else if (logfile) {
+ if (strbuf_read_file(&sb, logfile, 0) < 0)
+ die_errno(_("could not read log file '%s'"),
+ logfile);
+ hook_arg1 = "message";
+ } else if (use_message) {
+ buffer = strstr(use_message_buffer, "\n\n");
+ if (!buffer || buffer[2] == '\0')
+ die(_("commit has empty message"));
+ strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
+ hook_arg1 = "commit";
+ hook_arg2 = use_message;
+ } else if (fixup_message) {
+ struct pretty_print_context ctx = {0};
+ struct commit *commit;
+ commit = lookup_commit_reference_by_name(fixup_message);
+ if (!commit)
+ die(_("could not lookup commit %s"), fixup_message);
+ ctx.output_encoding = get_commit_output_encoding();
+ format_commit_message(commit, "fixup! %s\n\n",
+ &sb, &ctx);
+ hook_arg1 = "message";
+ } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
+ die_errno(_("could not read MERGE_MSG"));
+ hook_arg1 = "merge";
+ } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
+ die_errno(_("could not read SQUASH_MSG"));
+ hook_arg1 = "squash";
+ } else if (template_file) {
+ if (strbuf_read_file(&sb, template_file, 0) < 0)
+ die_errno(_("could not read '%s'"), template_file);
+ hook_arg1 = "template";
+ clean_message_contents = 0;
+ }
+
+ /*
+ * The remaining cases don't modify the template message, but
+ * just set the argument(s) to the prepare-commit-msg hook.
+ */
+ else if (whence == FROM_MERGE)
+ hook_arg1 = "merge";
+ else if (whence == FROM_CHERRY_PICK) {
+ hook_arg1 = "commit";
+ hook_arg2 = "CHERRY_PICK_HEAD";
+ }
+
+ if (squash_message) {
+ /*
+ * If squash_commit was used for the commit subject,
+ * then we're possibly hijacking other commit log options.
+ * Reset the hook args to tell the real story.
+ */
+ hook_arg1 = "message";
+ hook_arg2 = "";
+ }
+
+ s->fp = fopen(git_path(commit_editmsg), "w");
+ if (s->fp == NULL)
+ die_errno(_("could not open '%s'"), git_path(commit_editmsg));
+
+ if (clean_message_contents)
+ stripspace(&sb, 0);
+
+ if (signoff) {
+ struct strbuf sob = STRBUF_INIT;
+ int i;
+
+ strbuf_addstr(&sob, sign_off_header);
+ strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
+ getenv("GIT_COMMITTER_EMAIL")));
+ strbuf_addch(&sob, '\n');
+ for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
+ ; /* do nothing */
+ if (prefixcmp(sb.buf + i, sob.buf)) {
+ if (!i || !ends_rfc2822_footer(&sb))
+ strbuf_addch(&sb, '\n');
+ strbuf_addbuf(&sb, &sob);
+ }
+ strbuf_release(&sob);
+ }
+
+ if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
+ die_errno(_("could not write commit template"));
+
+ strbuf_release(&sb);
+
+ /* This checks and barfs if author is badly specified */
+ determine_author_info(author_ident);
+
+ /* This checks if committer ident is explicitly given */
+ strbuf_addstr(&committer_ident, git_committer_info(0));
+ if (use_editor && include_status) {
+ char *ai_tmp, *ci_tmp;
+ if (whence != FROM_COMMIT)
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("\n"
+ "It looks like you may be committing a %s.\n"
+ "If this is not correct, please remove the file\n"
+ " %s\n"
+ "and try again.\n"
+ ""),
+ whence_s(),
+ git_path(whence == FROM_MERGE
+ ? "MERGE_HEAD"
+ : "CHERRY_PICK_HEAD"));
+
+ fprintf(s->fp, "\n");
+ status_printf(s, GIT_COLOR_NORMAL,
+ _("Please enter the commit message for your changes."));
+ if (cleanup_mode == CLEANUP_ALL)
+ status_printf_more(s, GIT_COLOR_NORMAL,
+ _(" Lines starting\n"
+ "with '#' will be ignored, and an empty"
+ " message aborts the commit.\n"));
+ else /* CLEANUP_SPACE, that is. */
+ status_printf_more(s, GIT_COLOR_NORMAL,
+ _(" Lines starting\n"
+ "with '#' will be kept; you may remove them"
+ " yourself if you want to.\n"
+ "An empty message aborts the commit.\n"));
+ if (only_include_assumed)
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ "%s", only_include_assumed);
+
+ ai_tmp = cut_ident_timestamp_part(author_ident->buf);
+ ci_tmp = cut_ident_timestamp_part(committer_ident.buf);
+ if (strcmp(author_ident->buf, committer_ident.buf))
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("%s"
+ "Author: %s"),
+ ident_shown++ ? "" : "\n",
+ author_ident->buf);
+
+ if (!user_ident_sufficiently_given())
+ status_printf_ln(s, GIT_COLOR_NORMAL,
+ _("%s"
+ "Committer: %s"),
+ ident_shown++ ? "" : "\n",
+ committer_ident.buf);
+
+ if (ident_shown)
+ status_printf_ln(s, GIT_COLOR_NORMAL, "");
+
+ saved_color_setting = s->use_color;
+ s->use_color = 0;
+ commitable = run_status(s->fp, index_file, prefix, 1, s);
+ s->use_color = saved_color_setting;
+
+ *ai_tmp = ' ';
+ *ci_tmp = ' ';
+ } else {
+ unsigned char sha1[20];
+ const char *parent = "HEAD";
+
+ if (!active_nr && read_cache() < 0)
+ die(_("Cannot read index"));
+
+ if (amend)
+ parent = "HEAD^1";
+
+ if (get_sha1(parent, sha1))
+ commitable = !!active_nr;
+ else
+ commitable = index_differs_from(parent, 0);
+ }
+ strbuf_release(&committer_ident);
+
+ fclose(s->fp);
+
+ /*
+ * Reject an attempt to record a non-merge empty commit without
+ * explicit --allow-empty. In the cherry-pick case, it may be
+ * empty due to conflict resolution, which the user should okay.
+ */
+ if (!commitable && whence != FROM_MERGE && !allow_empty &&
+ !(amend && is_a_merge(current_head))) {
+ run_status(stdout, index_file, prefix, 0, s);
+ if (amend)
+ fputs(_(empty_amend_advice), stderr);
+ else if (whence == FROM_CHERRY_PICK)
+ fputs(_(empty_cherry_pick_advice), stderr);
+ return 0;
+ }
+
+ /*
+ * Re-read the index as pre-commit hook could have updated it,
+ * and write it out as a tree. We must do this before we invoke
+ * the editor and after we invoke run_status above.
+ */
+ discard_cache();
+ read_cache_from(index_file);
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+ if (cache_tree_update(active_cache_tree,
+ active_cache, active_nr, 0, 0) < 0) {
+ error(_("Error building trees"));
+ return 0;
+ }
+
+ if (run_hook(index_file, "prepare-commit-msg",
+ git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
+ return 0;
+
+ if (use_editor) {
+ char index[PATH_MAX];
+ const char *env[2] = { NULL };
+ env[0] = index;
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ if (launch_editor(git_path(commit_editmsg), NULL, env)) {
+ fprintf(stderr,
+ _("Please supply the message using either -m or -F option.\n"));
+ exit(1);
+ }
+ }
+
+ if (!no_verify &&
+ run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Find out if the message in the strbuf contains only whitespace and
+ * Signed-off-by lines.
+ */
+static int message_is_empty(struct strbuf *sb)
+{
+ struct strbuf tmpl = STRBUF_INIT;
+ const char *nl;
+ int eol, i, start = 0;
+
+ if (cleanup_mode == CLEANUP_NONE && sb->len)
+ return 0;
+
+ /* See if the template is just a prefix of the message. */
+ if (template_file && strbuf_read_file(&tmpl, template_file, 0) > 0) {
+ stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
+ if (start + tmpl.len <= sb->len &&
+ memcmp(tmpl.buf, sb->buf + start, tmpl.len) == 0)
+ start += tmpl.len;
+ }
+ strbuf_release(&tmpl);
+
+ /* Check if the rest is just whitespace and Signed-of-by's. */
+ for (i = start; i < sb->len; i++) {
+ nl = memchr(sb->buf + i, '\n', sb->len - i);
+ if (nl)
+ eol = nl - sb->buf;
+ else
+ eol = sb->len;
+
+ if (strlen(sign_off_header) <= eol - i &&
+ !prefixcmp(sb->buf + i, sign_off_header)) {
+ i = eol;
+ continue;
+ }
+ while (i < eol)
+ if (!isspace(sb->buf[i++]))
+ return 0;
+ }
+
+ return 1;
+}
+
+static const char *find_author_by_nickname(const char *name)
+{
+ struct rev_info revs;
+ struct commit *commit;
+ struct strbuf buf = STRBUF_INIT;
+ const char *av[20];
+ int ac = 0;
+
+ init_revisions(&revs, NULL);
+ strbuf_addf(&buf, "--author=%s", name);
+ av[++ac] = "--all";
+ av[++ac] = "-i";
+ av[++ac] = buf.buf;
+ av[++ac] = NULL;
+ setup_revisions(ac, av, &revs, NULL);
+ prepare_revision_walk(&revs);
+ commit = get_revision(&revs);
+ if (commit) {
+ struct pretty_print_context ctx = {0};
+ ctx.date_mode = DATE_NORMAL;
+ strbuf_release(&buf);
+ format_commit_message(commit, "%an <%ae>", &buf, &ctx);
+ return strbuf_detach(&buf, NULL);
+ }
+ die(_("No existing author found with '%s'"), name);
+}
+
+
+static void handle_untracked_files_arg(struct wt_status *s)
+{
+ if (!untracked_files_arg)
+ ; /* default already initialized */
+ else if (!strcmp(untracked_files_arg, "no"))
+ s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
+ else if (!strcmp(untracked_files_arg, "normal"))
+ s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
+ else if (!strcmp(untracked_files_arg, "all"))
+ s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
+ else
+ die(_("Invalid untracked files mode '%s'"), untracked_files_arg);
+}
+
+static const char *read_commit_message(const char *name)
+{
+ const char *out_enc, *out;
+ struct commit *commit;
+
+ commit = lookup_commit_reference_by_name(name);
+ if (!commit)
+ die(_("could not lookup commit %s"), name);
+ out_enc = get_commit_output_encoding();
+ out = logmsg_reencode(commit, out_enc);
+
+ /*
+ * If we failed to reencode the buffer, just copy it
+ * byte for byte so the user can try to fix it up.
+ * This also handles the case where input and output
+ * encodings are identical.
+ */
+ if (out == NULL)
+ out = xstrdup(commit->buffer);
+ return out;
+}
+
+static int parse_and_validate_options(int argc, const char *argv[],
+ const char * const usage[],
+ const char *prefix,
+ struct commit *current_head,
+ struct wt_status *s)
+{
+ int f = 0;
+
+ argc = parse_options(argc, argv, prefix, builtin_commit_options, usage,
+ 0);
+
+ if (force_author && !strchr(force_author, '>'))
+ force_author = find_author_by_nickname(force_author);
+
+ if (force_author && renew_authorship)
+ die(_("Using both --reset-author and --author does not make sense"));
+
+ if (logfile || message.len || use_message || fixup_message)
+ use_editor = 0;
+ if (edit_flag)
+ use_editor = 1;
+ if (!use_editor)
+ setenv("GIT_EDITOR", ":", 1);
+
+ /* Sanity check options */
+ if (amend && !current_head)
+ die(_("You have nothing to amend."));
+ if (amend && whence != FROM_COMMIT)
+ die(_("You are in the middle of a %s -- cannot amend."), whence_s());
+ if (fixup_message && squash_message)
+ die(_("Options --squash and --fixup cannot be used together"));
+ if (use_message)
+ f++;
+ if (edit_message)
+ f++;
+ if (fixup_message)
+ f++;
+ if (logfile)
+ f++;
+ if (f > 1)
+ die(_("Only one of -c/-C/-F/--fixup can be used."));
+ if (message.len && f > 0)
+ die((_("Option -m cannot be combined with -c/-C/-F/--fixup.")));
+ if (edit_message)
+ use_message = edit_message;
+ if (amend && !use_message && !fixup_message)
+ use_message = "HEAD";
+ if (!use_message && whence != FROM_CHERRY_PICK && renew_authorship)
+ die(_("--reset-author can be used only with -C, -c or --amend."));
+ if (use_message) {
+ use_message_buffer = read_commit_message(use_message);
+ if (!renew_authorship) {
+ author_message = use_message;
+ author_message_buffer = use_message_buffer;
+ }
+ }
+ if (whence == FROM_CHERRY_PICK && !renew_authorship) {
+ author_message = "CHERRY_PICK_HEAD";
+ author_message_buffer = read_commit_message(author_message);
+ }
+
+ if (patch_interactive)
+ interactive = 1;
+
+ if (!!also + !!only + !!all + !!interactive > 1)
+ die(_("Only one of --include/--only/--all/--interactive/--patch can be used."));
+ if (argc == 0 && (also || (only && !amend)))
+ die(_("No paths with --include/--only does not make sense."));
+ if (argc == 0 && only && amend)
+ only_include_assumed = _("Clever... amending the last one with dirty index.");
+ if (argc > 0 && !also && !only)
+ only_include_assumed = _("Explicit paths specified without -i nor -o; assuming --only paths...");
+ if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
+ cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "verbatim"))
+ cleanup_mode = CLEANUP_NONE;
+ else if (!strcmp(cleanup_arg, "whitespace"))
+ cleanup_mode = CLEANUP_SPACE;
+ else if (!strcmp(cleanup_arg, "strip"))
+ cleanup_mode = CLEANUP_ALL;
+ else
+ die(_("Invalid cleanup mode %s"), cleanup_arg);
+
+ handle_untracked_files_arg(s);
+
+ if (all && argc > 0)
+ die(_("Paths with -a does not make sense."));
+
+ if (null_termination && status_format == STATUS_FORMAT_LONG)
+ status_format = STATUS_FORMAT_PORCELAIN;
+ if (status_format != STATUS_FORMAT_LONG)
+ dry_run = 1;
+
+ return argc;
+}
+
+static int dry_run_commit(int argc, const char **argv, const char *prefix,
+ const struct commit *current_head, struct wt_status *s)
+{
+ int commitable;
+ const char *index_file;
+
+ index_file = prepare_index(argc, argv, prefix, current_head, 1);
+ commitable = run_status(stdout, index_file, prefix, 0, s);
+ rollback_index_files();
+
+ return commitable ? 0 : 1;
+}
+
+static int parse_status_slot(const char *var, int offset)
+{
+ if (!strcasecmp(var+offset, "header"))
+ return WT_STATUS_HEADER;
+ if (!strcasecmp(var+offset, "branch"))
+ return WT_STATUS_ONBRANCH;
+ if (!strcasecmp(var+offset, "updated")
+ || !strcasecmp(var+offset, "added"))
+ return WT_STATUS_UPDATED;
+ if (!strcasecmp(var+offset, "changed"))
+ return WT_STATUS_CHANGED;
+ if (!strcasecmp(var+offset, "untracked"))
+ return WT_STATUS_UNTRACKED;
+ if (!strcasecmp(var+offset, "nobranch"))
+ return WT_STATUS_NOBRANCH;
+ if (!strcasecmp(var+offset, "unmerged"))
+ return WT_STATUS_UNMERGED;
+ return -1;
+}
+
+static int git_status_config(const char *k, const char *v, void *cb)
+{
+ struct wt_status *s = cb;
+
+ if (!strcmp(k, "status.submodulesummary")) {
+ int is_bool;
+ s->submodule_summary = git_config_bool_or_int(k, v, &is_bool);
+ if (is_bool && s->submodule_summary)
+ s->submodule_summary = -1;
+ return 0;
+ }
+ if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
+ s->use_color = git_config_colorbool(k, v);
+ return 0;
+ }
+ if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
+ int slot = parse_status_slot(k, 13);
+ if (slot < 0)
+ return 0;
+ if (!v)
+ return config_error_nonbool(k);
+ color_parse(v, k, s->color_palette[slot]);
+ return 0;
+ }
+ if (!strcmp(k, "status.relativepaths")) {
+ s->relative_paths = git_config_bool(k, v);
+ return 0;
+ }
+ if (!strcmp(k, "status.showuntrackedfiles")) {
+ if (!v)
+ return config_error_nonbool(k);
+ else if (!strcmp(v, "no"))
+ s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
+ else if (!strcmp(v, "normal"))
+ s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
+ else if (!strcmp(v, "all"))
+ s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
+ else
+ return error(_("Invalid untracked files mode '%s'"), v);
+ return 0;
+ }
+ return git_diff_ui_config(k, v, NULL);
+}
+
+int cmd_status(int argc, const char **argv, const char *prefix)
+{
+ struct wt_status s;
+ int fd;
+ unsigned char sha1[20];
+ static struct option builtin_status_options[] = {
+ OPT__VERBOSE(&verbose, "be verbose"),
+ OPT_SET_INT('s', "short", &status_format,
+ "show status concisely", STATUS_FORMAT_SHORT),
+ OPT_BOOLEAN('b', "branch", &status_show_branch,
+ "show branch information"),
+ OPT_SET_INT(0, "porcelain", &status_format,
+ "machine-readable output",
+ STATUS_FORMAT_PORCELAIN),
+ OPT_BOOLEAN('z', "null", &null_termination,
+ "terminate entries with NUL"),
+ { 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" },
+ OPT_BOOLEAN(0, "ignored", &show_ignored_in_status,
+ "show ignored files"),
+ { OPTION_STRING, 0, "ignore-submodules", &ignore_submodule_arg, "when",
+ "ignore changes to submodules, optional when: all, dirty, untracked. (Default: all)",
+ PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
+ OPT_END(),
+ };
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_status_usage, builtin_status_options);
+
+ wt_status_prepare(&s);
+ gitmodules_config();
+ git_config(git_status_config, &s);
+ determine_whence(&s);
+ argc = parse_options(argc, argv, prefix,
+ builtin_status_options,
+ builtin_status_usage, 0);
+
+ if (null_termination && status_format == STATUS_FORMAT_LONG)
+ status_format = STATUS_FORMAT_PORCELAIN;
+
+ handle_untracked_files_arg(&s);
+ if (show_ignored_in_status)
+ s.show_ignored_files = 1;
+ if (*argv)
+ s.pathspec = get_pathspec(prefix, argv);
+
+ read_cache_preload(s.pathspec);
+ refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, s.pathspec, NULL, NULL);
+
+ fd = hold_locked_index(&index_lock, 0);
+ if (0 <= fd)
+ update_index_if_able(&the_index, &index_lock);
+
+ s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
+ s.ignore_submodule_arg = ignore_submodule_arg;
+ wt_status_collect(&s);
+
+ if (s.relative_paths)
+ s.prefix = prefix;
+
+ switch (status_format) {
+ case STATUS_FORMAT_SHORT:
+ wt_shortstatus_print(&s, null_termination, status_show_branch);
+ break;
+ case STATUS_FORMAT_PORCELAIN:
+ wt_porcelain_print(&s, null_termination);
+ break;
+ case STATUS_FORMAT_LONG:
+ s.verbose = verbose;
+ s.ignore_submodule_arg = ignore_submodule_arg;
+ wt_status_print(&s);
+ break;
+ }
+ return 0;
+}
+
+static void print_summary(const char *prefix, const unsigned char *sha1,
+ int initial_commit)
+{
+ struct rev_info rev;
+ struct commit *commit;
+ struct strbuf format = STRBUF_INIT;
+ unsigned char junk_sha1[20];
+ const char *head = resolve_ref("HEAD", junk_sha1, 0, NULL);
+ struct pretty_print_context pctx = {0};
+ struct strbuf author_ident = STRBUF_INIT;
+ struct strbuf committer_ident = STRBUF_INIT;
+
+ commit = lookup_commit(sha1);
+ if (!commit)
+ die(_("couldn't look up newly created commit"));
+ if (!commit || parse_commit(commit))
+ die(_("could not parse newly created commit"));
+
+ strbuf_addstr(&format, "format:%h] %s");
+
+ format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
+ format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
+ if (strbuf_cmp(&author_ident, &committer_ident)) {
+ strbuf_addstr(&format, "\n Author: ");
+ strbuf_addbuf_percentquote(&format, &author_ident);
+ }
+ if (!user_ident_sufficiently_given()) {
+ strbuf_addstr(&format, "\n Committer: ");
+ strbuf_addbuf_percentquote(&format, &committer_ident);
+ if (advice_implicit_identity) {
+ strbuf_addch(&format, '\n');
+ strbuf_addstr(&format, _(implicit_ident_advice));
+ }
+ }
+ strbuf_release(&author_ident);
+ strbuf_release(&committer_ident);
+
+ init_revisions(&rev, prefix);
+ setup_revisions(0, NULL, &rev, NULL);
+
+ rev.diff = 1;
+ rev.diffopt.output_format =
+ DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
+
+ rev.verbose_header = 1;
+ rev.show_root_diff = 1;
+ get_commit_format(format.buf, &rev);
+ rev.always_show_header = 0;
+ rev.diffopt.detect_rename = 1;
+ rev.diffopt.break_opt = 0;
+ diff_setup_done(&rev.diffopt);
+
+ printf("[%s%s ",
+ !prefixcmp(head, "refs/heads/") ?
+ head + 11 :
+ !strcmp(head, "HEAD") ?
+ _("detached HEAD") :
+ head,
+ initial_commit ? _(" (root-commit)") : "");
+
+ if (!log_tree_commit(&rev, commit)) {
+ rev.always_show_header = 1;
+ rev.use_terminator = 1;
+ log_tree_commit(&rev, commit);
+ }
+
+ strbuf_release(&format);
+}
+
+static int git_commit_config(const char *k, const char *v, void *cb)
+{
+ struct wt_status *s = cb;
+
+ if (!strcmp(k, "commit.template"))
+ return git_config_pathname(&template_file, k, v);
+ if (!strcmp(k, "commit.status")) {
+ include_status = git_config_bool(k, v);
+ return 0;
+ }
+
+ return git_status_config(k, v, s);
+}
+
+static const char post_rewrite_hook[] = "hooks/post-rewrite";
+
+static int run_rewrite_hook(const unsigned char *oldsha1,
+ const unsigned char *newsha1)
+{
+ /* oldsha1 SP newsha1 LF NUL */
+ static char buf[2*40 + 3];
+ struct child_process proc;
+ const char *argv[3];
+ int code;
+ size_t n;
+
+ if (access(git_path(post_rewrite_hook), X_OK) < 0)
+ return 0;
+
+ argv[0] = git_path(post_rewrite_hook);
+ argv[1] = "amend";
+ argv[2] = NULL;
+
+ memset(&proc, 0, sizeof(proc));
+ proc.argv = argv;
+ proc.in = -1;
+ proc.stdout_to_stderr = 1;
+
+ code = start_command(&proc);
+ if (code)
+ return code;
+ n = snprintf(buf, sizeof(buf), "%s %s\n",
+ sha1_to_hex(oldsha1), sha1_to_hex(newsha1));
+ write_in_full(proc.in, buf, n);
+ close(proc.in);
+ return finish_command(&proc);
+}
+
+int cmd_commit(int argc, const char **argv, const char *prefix)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct strbuf author_ident = STRBUF_INIT;
+ const char *index_file, *reflog_msg;
+ char *nl, *p;
+ unsigned char sha1[20];
+ struct ref_lock *ref_lock;
+ struct commit_list *parents = NULL, **pptr = &parents;
+ struct stat statbuf;
+ int allow_fast_forward = 1;
+ struct wt_status s;
+ struct commit *current_head = NULL;
+
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(builtin_commit_usage, builtin_commit_options);
+
+ wt_status_prepare(&s);
+ git_config(git_commit_config, &s);
+ determine_whence(&s);
+
+ if (get_sha1("HEAD", sha1))
+ current_head = NULL;
+ else {
+ current_head = lookup_commit_or_die(sha1, "HEAD");
+ if (!current_head || parse_commit(current_head))
+ die(_("could not parse HEAD commit"));
+ }
+ argc = parse_and_validate_options(argc, argv, builtin_commit_usage,
+ prefix, current_head, &s);
+ if (dry_run)
+ return dry_run_commit(argc, argv, prefix, current_head, &s);
+ index_file = prepare_index(argc, argv, prefix, current_head, 0);
+
+ /* Set up everything for writing the commit object. This includes
+ running hooks, writing the trees, and interacting with the user. */
+ if (!prepare_to_commit(index_file, prefix,
+ current_head, &s, &author_ident)) {
+ rollback_index_files();
+ return 1;
+ }
+
+ /* Determine parents */
+ reflog_msg = getenv("GIT_REFLOG_ACTION");
+ if (!current_head) {
+ if (!reflog_msg)
+ reflog_msg = "commit (initial)";
+ } else if (amend) {
+ struct commit_list *c;
+
+ if (!reflog_msg)
+ reflog_msg = "commit (amend)";
+ for (c = current_head->parents; c; c = c->next)
+ pptr = &commit_list_insert(c->item, pptr)->next;
+ } else if (whence == FROM_MERGE) {
+ struct strbuf m = STRBUF_INIT;
+ struct commit *commit;
+ FILE *fp;
+
+ if (!reflog_msg)
+ reflog_msg = "commit (merge)";
+ pptr = &commit_list_insert(current_head, pptr)->next;
+ fp = fopen(git_path("MERGE_HEAD"), "r");
+ if (fp == NULL)
+ die_errno(_("could not open '%s' for reading"),
+ git_path("MERGE_HEAD"));
+ while (strbuf_getline(&m, fp, '\n') != EOF) {
+ unsigned char sha1[20];
+ if (get_sha1_hex(m.buf, sha1) < 0)
+ die(_("Corrupt MERGE_HEAD file (%s)"), m.buf);
+ commit = lookup_commit_or_die(sha1, "MERGE_HEAD");
+ pptr = &commit_list_insert(commit, pptr)->next;
+ }
+ fclose(fp);
+ strbuf_release(&m);
+ if (!stat(git_path("MERGE_MODE"), &statbuf)) {
+ if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
+ die_errno(_("could not read MERGE_MODE"));
+ if (!strcmp(sb.buf, "no-ff"))
+ allow_fast_forward = 0;
+ }
+ if (allow_fast_forward)
+ parents = reduce_heads(parents);
+ } else {
+ if (!reflog_msg)
+ reflog_msg = (whence == FROM_CHERRY_PICK)
+ ? "commit (cherry-pick)"
+ : "commit";
+ pptr = &commit_list_insert(current_head, pptr)->next;
+ }
+
+ /* Finally, get the commit message */
+ strbuf_reset(&sb);
+ if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
+ int saved_errno = errno;
+ rollback_index_files();
+ die(_("could not read commit message: %s"), strerror(saved_errno));
+ }
+
+ /* Truncate the message just before the diff, if any. */
+ if (verbose) {
+ p = strstr(sb.buf, "\ndiff --git ");
+ if (p != NULL)
+ strbuf_setlen(&sb, p - sb.buf + 1);
+ }
+
+ if (cleanup_mode != CLEANUP_NONE)
+ stripspace(&sb, cleanup_mode == CLEANUP_ALL);
+ if (message_is_empty(&sb) && !allow_empty_message) {
+ rollback_index_files();
+ fprintf(stderr, _("Aborting commit due to empty commit message.\n"));
+ exit(1);
+ }
+
+ if (commit_tree(sb.buf, active_cache_tree->sha1, parents, sha1,
+ author_ident.buf)) {
+ rollback_index_files();
+ die(_("failed to write commit object"));
+ }
+ strbuf_release(&author_ident);
+
+ ref_lock = lock_any_ref_for_update("HEAD",
+ !current_head
+ ? NULL
+ : current_head->object.sha1,
+ 0);
+
+ nl = strchr(sb.buf, '\n');
+ if (nl)
+ strbuf_setlen(&sb, nl + 1 - sb.buf);
+ else
+ strbuf_addch(&sb, '\n');
+ strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
+ strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
+
+ if (!ref_lock) {
+ rollback_index_files();
+ die(_("cannot lock HEAD ref"));
+ }
+ if (write_ref_sha1(ref_lock, sha1, sb.buf) < 0) {
+ rollback_index_files();
+ die(_("cannot update HEAD ref"));
+ }
+
+ unlink(git_path("CHERRY_PICK_HEAD"));
+ unlink(git_path("REVERT_HEAD"));
+ unlink(git_path("MERGE_HEAD"));
+ unlink(git_path("MERGE_MSG"));
+ unlink(git_path("MERGE_MODE"));
+ unlink(git_path("SQUASH_MSG"));
+
+ if (commit_index_files())
+ die (_("Repository has been updated, but unable to write\n"
+ "new_index file. Check that disk is not full or quota is\n"
+ "not exceeded, and then \"git reset HEAD\" to recover."));
+
+ rerere(0);
+ run_hook(get_index_file(), "post-commit", NULL);
+ if (amend && !no_post_rewrite) {
+ struct notes_rewrite_cfg *cfg;
+ cfg = init_copy_notes_for_rewrite("amend");
+ if (cfg) {
+ /* we are amending, so current_head is not NULL */
+ copy_note_for_rewrite(cfg, current_head->object.sha1, sha1);
+ finish_copy_notes_for_rewrite(cfg);
+ }
+ run_rewrite_hook(current_head->object.sha1, sha1);
+ }
+ if (!quiet)
+ print_summary(prefix, sha1, !current_head);
+
+ return 0;
+}