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Merge branch 'pw/sequencer-in-process-commit'

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The sequencer infrastructure is shared across "git cherry-pick",
"git rebase -i", etc., and has always spawned "git commit" when it
needs to create a commit.  It has been taught to do so internally,
when able, by reusing the codepath "git commit" itself uses, which
gives performance boost for a few tens of percents in some sample
scenarios.

* pw/sequencer-in-process-commit:
  sequencer: run 'prepare-commit-msg' hook
  t7505: add tests for cherry-pick and rebase -i/-p
  t7505: style fixes
  sequencer: assign only free()able strings to gpg_sign
  sequencer: improve config handling
  t3512/t3513: remove KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT=1
  sequencer: try to commit without forking 'git commit'
  sequencer: load commit related config
  sequencer: simplify adding Signed-off-by: trailer
  commit: move print_commit_summary() to libgit
  commit: move post-rewrite code to libgit
  Add a function to update HEAD after creating a commit
  commit: move empty message checks to libgit
  t3404: check intermediate squash messages
This commit is contained in:
Junio C Hamano
2018-02-13 13:39:15 -08:00
parent dd0c256b67 66618a50f9
commit 0f57f731ea
11 changed files with 765 additions and 280 deletions
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291
builtin/commit.c
View File

@ -31,9 +31,7 @@
#include "gpg-interface.h"
#include "column.h"
#include "sequencer.h"
#include "notes-utils.h"
#include "mailmap.h"
#include "sigchain.h"
static const char * const builtin_commit_usage[] = {
N_("git commit [<options>] [--] <pathspec>..."),
@ -45,31 +43,6 @@ static const char * const builtin_status_usage[] = {
NULL
};
static const char implicit_ident_advice_noconfig[] =
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. Run the\n"
"following command and follow the instructions in your editor to edit\n"
"your configuration file:\n"
"\n"
" git config --global --edit\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 implicit_ident_advice_config[] =
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"
@ -93,8 +66,6 @@ N_("If you wish to skip this commit, use:\n"
"Then \"git cherry-pick --continue\" will resume cherry-picking\n"
"the remaining commits.\n");
static GIT_PATH_FUNC(git_path_commit_editmsg, "COMMIT_EDITMSG")
static const char *use_message_buffer;
static struct lock_file index_lock; /* real index */
static struct lock_file false_lock; /* used only for partial commits */
@ -128,12 +99,7 @@ static char *sign_commit;
* if editor is used, and only the whitespaces if the message
* is specified explicitly.
*/
static enum {
CLEANUP_SPACE,
CLEANUP_NONE,
CLEANUP_SCISSORS,
CLEANUP_ALL
} cleanup_mode;
static enum commit_msg_cleanup_mode cleanup_mode;
static const char *cleanup_arg;
static enum commit_whence whence;
@ -673,7 +639,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
struct strbuf sb = STRBUF_INIT;
const char *hook_arg1 = NULL;
const char *hook_arg2 = NULL;
int clean_message_contents = (cleanup_mode != CLEANUP_NONE);
int clean_message_contents = (cleanup_mode != COMMIT_MSG_CLEANUP_NONE);
int old_display_comment_prefix;
/* This checks and barfs if author is badly specified */
@ -814,7 +780,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
struct ident_split ci, ai;
if (whence != FROM_COMMIT) {
if (cleanup_mode == CLEANUP_SCISSORS)
if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS)
wt_status_add_cut_line(s->fp);
status_printf_ln(s, GIT_COLOR_NORMAL,
whence == FROM_MERGE
@ -834,14 +800,15 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
}
fprintf(s->fp, "\n");
if (cleanup_mode == CLEANUP_ALL)
if (cleanup_mode == COMMIT_MSG_CLEANUP_ALL)
status_printf(s, GIT_COLOR_NORMAL,
_("Please enter the commit message for your changes."
" Lines starting\nwith '%c' will be ignored, and an empty"
" message aborts the commit.\n"), comment_line_char);
else if (cleanup_mode == CLEANUP_SCISSORS && whence == FROM_COMMIT)
else if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS &&
whence == FROM_COMMIT)
wt_status_add_cut_line(s->fp);
else /* CLEANUP_SPACE, that is. */
else /* COMMIT_MSG_CLEANUP_SPACE, that is. */
status_printf(s, GIT_COLOR_NORMAL,
_("Please enter the commit message for your changes."
" Lines starting\n"
@ -986,65 +953,6 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
return 1;
}
static int rest_is_empty(struct strbuf *sb, int start)
{
int i, eol;
const char *nl;
/* Check if the rest is just whitespace and Signed-off-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 &&
starts_with(sb->buf + i, sign_off_header)) {
i = eol;
continue;
}
while (i < eol)
if (!isspace(sb->buf[i++]))
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)
{
if (cleanup_mode == CLEANUP_NONE && sb->len)
return 0;
return rest_is_empty(sb, 0);
}
/*
* See if the user edited the message in the editor or left what
* was in the template intact
*/
static int template_untouched(struct strbuf *sb)
{
struct strbuf tmpl = STRBUF_INIT;
const char *start;
if (cleanup_mode == CLEANUP_NONE && sb->len)
return 0;
if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
return 0;
strbuf_stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
if (!skip_prefix(sb->buf, tmpl.buf, &start))
start = sb->buf;
strbuf_release(&tmpl);
return rest_is_empty(sb, start - sb->buf);
}
static const char *find_author_by_nickname(const char *name)
{
struct rev_info revs;
@ -1229,15 +1137,17 @@ static int parse_and_validate_options(int argc, const char *argv[],
if (argc == 0 && (also || (only && !amend && !allow_empty)))
die(_("No paths with --include/--only does not make sense."));
if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
cleanup_mode = use_editor ? COMMIT_MSG_CLEANUP_ALL :
COMMIT_MSG_CLEANUP_SPACE;
else if (!strcmp(cleanup_arg, "verbatim"))
cleanup_mode = CLEANUP_NONE;
cleanup_mode = COMMIT_MSG_CLEANUP_NONE;
else if (!strcmp(cleanup_arg, "whitespace"))
cleanup_mode = CLEANUP_SPACE;
cleanup_mode = COMMIT_MSG_CLEANUP_SPACE;
else if (!strcmp(cleanup_arg, "strip"))
cleanup_mode = CLEANUP_ALL;
cleanup_mode = COMMIT_MSG_CLEANUP_ALL;
else if (!strcmp(cleanup_arg, "scissors"))
cleanup_mode = use_editor ? CLEANUP_SCISSORS : CLEANUP_SPACE;
cleanup_mode = use_editor ? COMMIT_MSG_CLEANUP_SCISSORS :
COMMIT_MSG_CLEANUP_SPACE;
else
die(_("Invalid cleanup mode %s"), cleanup_arg);
@ -1439,98 +1349,6 @@ int cmd_status(int argc, const char **argv, const char *prefix)
return 0;
}
static const char *implicit_ident_advice(void)
{
char *user_config = expand_user_path("~/.gitconfig", 0);
char *xdg_config = xdg_config_home("config");
int config_exists = file_exists(user_config) || file_exists(xdg_config);
free(user_config);
free(xdg_config);
if (config_exists)
return _(implicit_ident_advice_config);
else
return _(implicit_ident_advice_noconfig);
}
static void print_summary(const char *prefix, const struct object_id *oid,
int initial_commit)
{
struct rev_info rev;
struct commit *commit;
struct strbuf format = STRBUF_INIT;
const char *head;
struct pretty_print_context pctx = {0};
struct strbuf author_ident = STRBUF_INIT;
struct strbuf committer_ident = STRBUF_INIT;
commit = lookup_commit(oid);
if (!commit)
die(_("couldn't look up newly created commit"));
if (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 (author_date_is_interesting()) {
struct strbuf date = STRBUF_INIT;
format_commit_message(commit, "%ad", &date, &pctx);
strbuf_addstr(&format, "\n Date: ");
strbuf_addbuf_percentquote(&format, &date);
strbuf_release(&date);
}
if (!committer_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 = DIFF_DETECT_RENAME;
rev.diffopt.break_opt = 0;
diff_setup_done(&rev.diffopt);
head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
if (!head)
die_errno(_("unable to resolve HEAD after creating commit"));
if (!strcmp(head, "HEAD"))
head = _("detached HEAD");
else
skip_prefix(head, "refs/heads/", &head);
printf("[%s%s ", 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;
@ -1560,37 +1378,6 @@ static int git_commit_config(const char *k, const char *v, void *cb)
return git_status_config(k, v, s);
}
static int run_rewrite_hook(const struct object_id *oldoid,
const struct object_id *newoid)
{
struct child_process proc = CHILD_PROCESS_INIT;
const char *argv[3];
int code;
struct strbuf sb = STRBUF_INIT;
argv[0] = find_hook("post-rewrite");
if (!argv[0])
return 0;
argv[1] = "amend";
argv[2] = NULL;
proc.argv = argv;
proc.in = -1;
proc.stdout_to_stderr = 1;
code = start_command(&proc);
if (code)
return code;
strbuf_addf(&sb, "%s %s\n", oid_to_hex(oldoid), oid_to_hex(newoid));
sigchain_push(SIGPIPE, SIG_IGN);
write_in_full(proc.in, sb.buf, sb.len);
close(proc.in);
strbuf_release(&sb);
sigchain_pop(SIGPIPE);
return finish_command(&proc);
}
int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...)
{
struct argv_array hook_env = ARGV_ARRAY_INIT;
@ -1673,13 +1460,11 @@ 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;
struct object_id oid;
struct commit_list *parents = NULL;
struct stat statbuf;
struct commit *current_head = NULL;
struct commit_extra_header *extra = NULL;
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
if (argc == 2 && !strcmp(argv[1], "-h"))
@ -1770,17 +1555,17 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
}
if (verbose || /* Truncate the message just before the diff, if any. */
cleanup_mode == CLEANUP_SCISSORS)
cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS)
strbuf_setlen(&sb, wt_status_locate_end(sb.buf, sb.len));
if (cleanup_mode != CLEANUP_NONE)
strbuf_stripspace(&sb, cleanup_mode == CLEANUP_ALL);
if (cleanup_mode != COMMIT_MSG_CLEANUP_NONE)
strbuf_stripspace(&sb, cleanup_mode == COMMIT_MSG_CLEANUP_ALL);
if (message_is_empty(&sb) && !allow_empty_message) {
if (message_is_empty(&sb, cleanup_mode) && !allow_empty_message) {
rollback_index_files();
fprintf(stderr, _("Aborting commit due to empty commit message.\n"));
exit(1);
}
if (template_untouched(&sb) && !allow_empty_message) {
if (template_untouched(&sb, template_file, cleanup_mode) && !allow_empty_message) {
rollback_index_files();
fprintf(stderr, _("Aborting commit; you did not edit the message.\n"));
exit(1);
@ -1802,25 +1587,11 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
strbuf_release(&author_ident);
free_commit_extra_headers(extra);
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);
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, "HEAD", &oid,
current_head
? &current_head->object.oid : &null_oid,
0, sb.buf, &err) ||
ref_transaction_commit(transaction, &err)) {
if (update_head_with_reflog(current_head, &oid, reflog_msg, &sb,
&err)) {
rollback_index_files();
die("%s", err.buf);
}
ref_transaction_free(transaction);
unlink(git_path_cherry_pick_head());
unlink(git_path_revert_head());
@ -1837,17 +1608,17 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
rerere(0);
run_commit_hook(use_editor, 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.oid, &oid);
finish_copy_notes_for_rewrite(cfg, "Notes added by 'git commit --amend'");
}
run_rewrite_hook(&current_head->object.oid, &oid);
commit_post_rewrite(current_head, &oid);
}
if (!quiet) {
unsigned int flags = 0;
if (!current_head)
flags |= SUMMARY_INITIAL_COMMIT;
if (author_date_is_interesting())
flags |= SUMMARY_SHOW_AUTHOR_DATE;
print_commit_summary(prefix, &oid, flags);
}
if (!quiet)
print_summary(prefix, &oid, !current_head);
UNLEAK(err);
UNLEAK(sb);