From: Phillip Wood <phillip.w...@dunelm.org.uk>
Move print_commit_summary() from builtin/commit.c to sequencer.c so it
can be shared with other commands. The function is modified by
changing the last argument to a flag so callers can specify whether
they want to show the author date in addition to specifying if this is
an initial commit.
If the sequencer dies in print_commit_summary() (which can only happen
when cherry-picking or reverting) then neither the todo list nor the
abort safety file are updated to reflect the commit that was just
made. print_commit_summary() can die if:
- The commit that was just created cannot be found or parsed.
- HEAD cannot be resolved either because some other process is
updating it (which is bad news in the middle of a cherry-pick) or
because it is corrupt.
- log_tree_commit() cannot read some objects.
In all those cases dying will leave the sequencer in a sane state for
aborting; 'git cherry-pick --abort' will rewind HEAD to the last
successful commit before there was a problem with HEAD or the object
database. If the user somehow fixes the problem and runs 'git
cherry-pick --continue' then the sequencer will try and pick the same
commit again which may or may not be what the user wants depending on
what caused print_commit_summary() to die. If print_commit_summary()
returned an error instead then update_abort_safety_file() would try to
resolve HEAD which may or may not be successful. If it is successful
then running 'git rebase --abort' would not rewind HEAD to the last
successful commit which is not what we want.
Signed-off-by: Phillip Wood <phillip.w...@dunelm.org.uk>
---
Notes:
changes since v2:
- expanded commit message to explain why it is ok to die in
print_commit_summary() and dropped the next patch which made it
return an error instead.
- style fixes.
changes since v1:
- convert flags passed to print_commit_summary() to unsigned int
builtin/commit.c | 128 ++++---------------------------------------------------
sequencer.c | 119 +++++++++++++++++++++++++++++++++++++++++++++++++++
sequencer.h | 5 +++
3 files changed, 133 insertions(+), 119 deletions(-)
diff --git a/builtin/commit.c b/builtin/commit.c
index
d251cfcebad3476c365492d83803e7821fdfdf2b..2043479d37873671d43124dc0cb509d6d9247baa
100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -43,31 +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 y...@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"
@@ -1374,98 +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 = 1;
- 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;
@@ -1727,8 +1610,15 @@ int cmd_commit(int argc, const char **argv, const char
*prefix)
if (amend && !no_post_rewrite) {
commit_post_rewrite(current_head, &oid);
}
- if (!quiet)
- print_summary(prefix, &oid, !current_head);
+ 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);
+ }
UNLEAK(err);
UNLEAK(sb);
diff --git a/sequencer.c b/sequencer.c
index
6bc8346d42bb3cb1d2dc6a2238dd1b38e4308914..a2cf6f5e06ffec5108f0faf43d1a4cb605264c3f
100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -836,6 +836,125 @@ void commit_post_rewrite(const struct commit *old_head,
run_rewrite_hook(&old_head->object.oid, new_head);
}
+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 y...@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 *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);
+
+}
+
+void print_commit_summary(const char *prefix, const struct object_id *oid,
+ unsigned int flags)
+{
+ 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 (flags & SUMMARY_SHOW_AUTHOR_DATE) {
+ 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 = 1;
+ 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, (flags & SUMMARY_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 is_original_commit_empty(struct commit *commit)
{
const struct object_id *ptree_oid;
diff --git a/sequencer.h b/sequencer.h
index
ec13b679c40dc4012a84a761ea856d6e75953490..4f616c61a3f3869daf9f427b978c308d6094a978
100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -75,4 +75,9 @@ int update_head_with_reflog(const struct commit *old_head,
struct strbuf *err);
void commit_post_rewrite(const struct commit *current_head,
const struct object_id *new_head);
+
+#define SUMMARY_INITIAL_COMMIT (1 << 0)
+#define SUMMARY_SHOW_AUTHOR_DATE (1 << 1)
+void print_commit_summary(const char *prefix, const struct object_id *oid,
+ unsigned int flags);
#endif
--
2.15.0
