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commit.c
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/*
* Builtin "git commit"
*
* Copyright (c) 2007 Kristian Høgsberg <[email protected]>
* Based on git-commit.sh by Junio C Hamano and Linus Torvalds
*/
#define USE_THE_REPOSITORY_VARIABLE
#define DISABLE_SIGN_COMPARE_WARNINGS
#include "builtin.h"
#include "advice.h"
#include "config.h"
#include "lockfile.h"
#include "cache-tree.h"
#include "color.h"
#include "dir.h"
#include "editor.h"
#include "environment.h"
#include "diff.h"
#include "commit.h"
#include "gettext.h"
#include "revision.h"
#include "wt-status.h"
#include "run-command.h"
#include "strbuf.h"
#include "object-name.h"
#include "parse-options.h"
#include "path.h"
#include "preload-index.h"
#include "read-cache.h"
#include "repository.h"
#include "string-list.h"
#include "rerere.h"
#include "unpack-trees.h"
#include "column.h"
#include "sequencer.h"
#include "sparse-index.h"
#include "mailmap.h"
#include "help.h"
#include "commit-reach.h"
#include "commit-graph.h"
#include "pretty.h"
#include "trailer.h"
#include "trace2.h"
static const char * const builtin_commit_usage[] = {
N_("git commit [-a | --interactive | --patch] [-s] [-v] [-u[<mode>]] [--amend]\n"
" [--dry-run] [(-c | -C | --squash) <commit> | --fixup [(amend|reword):]<commit>]\n"
" [-F <file> | -m <msg>] [--reset-author] [--allow-empty]\n"
" [--allow-empty-message] [--no-verify] [-e] [--author=<author>]\n"
" [--date=<date>] [--cleanup=<mode>] [--[no-]status]\n"
" [-i | -o] [--pathspec-from-file=<file> [--pathspec-file-nul]]\n"
" [(--trailer <token>[(=|:)<value>])...] [-S[<keyid>]]\n"
" [--] [<pathspec>...]"),
NULL
};
static const char * const builtin_status_usage[] = {
N_("git status [<options>] [--] [<pathspec>...]"),
NULL
};
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");
static const char empty_rebase_pick_advice[] =
N_("Otherwise, please use 'git rebase --skip'\n");
static const char empty_cherry_pick_advice_single[] =
N_("Otherwise, please use 'git cherry-pick --skip'\n");
static const char empty_cherry_pick_advice_multi[] =
N_("and then use:\n"
"\n"
" git cherry-pick --continue\n"
"\n"
"to resume cherry-picking the remaining commits.\n"
"If you wish to skip this commit, use:\n"
"\n"
" git cherry-pick --skip\n"
"\n");
static const char *color_status_slots[] = {
[WT_STATUS_HEADER] = "header",
[WT_STATUS_UPDATED] = "updated",
[WT_STATUS_CHANGED] = "changed",
[WT_STATUS_UNTRACKED] = "untracked",
[WT_STATUS_NOBRANCH] = "noBranch",
[WT_STATUS_UNMERGED] = "unmerged",
[WT_STATUS_LOCAL_BRANCH] = "localBranch",
[WT_STATUS_REMOTE_BRANCH] = "remoteBranch",
[WT_STATUS_ONBRANCH] = "branch",
};
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 */
static enum {
COMMIT_AS_IS = 1,
COMMIT_NORMAL,
COMMIT_PARTIAL
} commit_style;
static const char *force_author;
static char *logfile;
static 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 const char *edit_message, *use_message;
static char *fixup_message, *fixup_commit, *squash_message;
static const char *fixup_prefix;
static int all, also, interactive, patch_interactive, only, amend, signoff;
static int edit_flag = -1; /* unspecified */
static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
static int config_commit_verbose = -1; /* unspecified */
static int no_post_rewrite, allow_empty_message, pathspec_file_nul;
static const char *untracked_files_arg, *force_date, *ignore_submodule_arg, *ignored_arg;
static const char *sign_commit, *pathspec_from_file;
static struct strvec trailer_args = STRVEC_INIT;
/*
* 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 commit_msg_cleanup_mode cleanup_mode;
static char *cleanup_config;
static enum commit_whence whence;
static int use_editor = 1, include_status = 1;
static int have_option_m;
static struct strbuf message = STRBUF_INIT;
static enum wt_status_format status_format = STATUS_FORMAT_UNSPECIFIED;
static int opt_parse_porcelain(const struct option *opt, const char *arg, int unset)
{
enum wt_status_format *value = (enum wt_status_format *)opt->value;
if (unset)
*value = STATUS_FORMAT_NONE;
else if (!arg)
*value = STATUS_FORMAT_PORCELAIN;
else if (!strcmp(arg, "v1") || !strcmp(arg, "1"))
*value = STATUS_FORMAT_PORCELAIN;
else if (!strcmp(arg, "v2") || !strcmp(arg, "2"))
*value = STATUS_FORMAT_PORCELAIN_V2;
else
die("unsupported porcelain version '%s'", arg);
return 0;
}
static int do_serialize = 0;
static char *serialize_path = NULL;
static int reject_implicit = 0;
static int do_implicit_deserialize = 0;
static int do_explicit_deserialize = 0;
static char *deserialize_path = NULL;
static enum wt_status_deserialize_wait implicit_deserialize_wait = DESERIALIZE_WAIT__UNSET;
static enum wt_status_deserialize_wait explicit_deserialize_wait = DESERIALIZE_WAIT__UNSET;
/*
* --serialize | --serialize=<path>
*
* Request that we serialize status output rather than or in addition to
* printing in any of the established formats.
*
* Without a path, we write binary serialization data to stdout (and omit
* the normal status output).
*
* With a path, we write binary serialization data to the <path> and then
* write normal status output.
*/
static int opt_parse_serialize(const struct option *opt, const char *arg, int unset)
{
enum wt_status_format *value = (enum wt_status_format *)opt->value;
if (unset || !arg)
*value = STATUS_FORMAT_SERIALIZE_V1;
if (arg) {
free(serialize_path);
serialize_path = xstrdup(arg);
}
if (do_explicit_deserialize)
die("cannot mix --serialize and --deserialize");
do_implicit_deserialize = 0;
do_serialize = 1;
return 0;
}
/*
* --deserialize | --deserialize=<path> |
* --no-deserialize
*
* Request that we deserialize status data from some existing resource
* rather than performing a status scan.
*
* The input source can come from stdin or a path given here -- or be
* inherited from the config settings.
*/
static int opt_parse_deserialize(const struct option *opt UNUSED, const char *arg, int unset)
{
if (unset) {
do_implicit_deserialize = 0;
do_explicit_deserialize = 0;
} else {
if (do_serialize)
die("cannot mix --serialize and --deserialize");
if (arg) {
/* override config or stdin */
free(deserialize_path);
deserialize_path = xstrdup(arg);
}
if (!deserialize_path || !*deserialize_path)
do_explicit_deserialize = 1; /* read stdin */
else if (wt_status_deserialize_access(deserialize_path, R_OK) == 0)
do_explicit_deserialize = 1; /* can read from this file */
else {
/*
* otherwise, silently fallback to the normal
* collection scan
*/
do_implicit_deserialize = 0;
do_explicit_deserialize = 0;
}
}
return 0;
}
static enum wt_status_deserialize_wait parse_dw(const char *arg)
{
int tenths;
if (!strcmp(arg, "fail"))
return DESERIALIZE_WAIT__FAIL;
else if (!strcmp(arg, "block"))
return DESERIALIZE_WAIT__BLOCK;
else if (!strcmp(arg, "no"))
return DESERIALIZE_WAIT__NO;
/*
* Otherwise, assume it is a timeout in tenths of a second.
* If it contains a bogus value, atol() will return zero
* which is OK.
*/
tenths = atol(arg);
if (tenths < 0)
tenths = DESERIALIZE_WAIT__NO;
return tenths;
}
static int opt_parse_deserialize_wait(const struct option *opt UNUSED,
const char *arg,
int unset)
{
if (unset)
explicit_deserialize_wait = DESERIALIZE_WAIT__UNSET;
else
explicit_deserialize_wait = parse_dw(arg);
return 0;
}
static int opt_parse_m(const struct option *opt, const char *arg, int unset)
{
struct strbuf *buf = opt->value;
if (unset) {
have_option_m = 0;
strbuf_setlen(buf, 0);
} else {
have_option_m = 1;
if (buf->len)
strbuf_addch(buf, '\n');
strbuf_addstr(buf, arg);
strbuf_complete_line(buf);
}
return 0;
}
static int opt_parse_rename_score(const struct option *opt, const char *arg, int unset)
{
const char **value = opt->value;
BUG_ON_OPT_NEG(unset);
if (arg != NULL && *arg == '=')
arg = arg + 1;
*value = arg;
return 0;
}
static void determine_whence(struct wt_status *s)
{
if (file_exists(git_path_merge_head(the_repository)))
whence = FROM_MERGE;
else if (!sequencer_determine_whence(the_repository, &whence))
whence = FROM_COMMIT;
if (s)
s->whence = whence;
}
static void status_init_config(struct wt_status *s, config_fn_t fn)
{
wt_status_prepare(the_repository, s);
init_diff_ui_defaults();
git_config(fn, s);
determine_whence(s);
s->hints = advice_enabled(ADVICE_STATUS_HINTS); /* must come after git_config() */
}
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 struct pathspec *pattern)
{
int i, ret;
char *m;
if (!pattern->nr)
return 0;
m = xcalloc(1, pattern->nr);
if (with_tree) {
char *max_prefix = common_prefix(pattern);
overlay_tree_on_index(the_repository->index, with_tree, max_prefix);
free(max_prefix);
}
/* TODO: audit for interaction with sparse-index. */
ensure_full_index_unaudited(the_repository->index);
for (i = 0; i < the_repository->index->cache_nr; i++) {
const struct cache_entry *ce = the_repository->index->cache[i];
struct string_list_item *item;
if (ce->ce_flags & CE_UPDATE)
continue;
if (!ce_path_match(the_repository->index, ce, pattern, 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 */
}
ret = report_path_error(m, pattern);
free(m);
return ret;
}
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_index(the_repository->index, p->string, &st, 0))
die(_("updating files failed"));
} else
remove_file_from_index(the_repository->index, 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_index(the_repository->index);
return;
}
memset(&opts, 0, sizeof(opts));
opts.head_idx = 1;
opts.index_only = 1;
opts.merge = 1;
opts.src_index = the_repository->index;
opts.dst_index = the_repository->index;
opts.fn = oneway_merge;
tree = parse_tree_indirect(¤t_head->object.oid);
if (!tree)
die(_("failed to unpack HEAD tree object"));
if (parse_tree(tree) < 0)
exit(128);
init_tree_desc(&t, &tree->object.oid, 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_index(the_repository->index, refresh_flags | REFRESH_IN_PORCELAIN, NULL, NULL, NULL))
die_resolve_conflict("commit");
}
static const char *prepare_index(const char **argv, const char *prefix,
const struct commit *current_head, int is_status)
{
struct string_list partial = STRING_LIST_INIT_DUP;
struct pathspec pathspec;
int refresh_flags = REFRESH_QUIET;
const char *ret;
char *path = NULL;
if (is_status)
refresh_flags |= REFRESH_UNMERGED;
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_FULL,
prefix, argv);
if (pathspec_from_file) {
if (interactive)
die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--interactive/--patch");
if (all)
die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "-a");
if (pathspec.nr)
die(_("'%s' and pathspec arguments cannot be used together"), "--pathspec-from-file");
parse_pathspec_file(&pathspec, 0,
PATHSPEC_PREFER_FULL,
prefix, pathspec_from_file, pathspec_file_nul);
} else if (pathspec_file_nul) {
die(_("the option '%s' requires '%s'"), "--pathspec-file-nul", "--pathspec-from-file");
}
if (!pathspec.nr && (also || (only && !allow_empty &&
(!amend || (fixup_message && strcmp(fixup_prefix, "amend"))))))
die(_("No paths with --include/--only does not make sense."));
if (repo_read_index_preload(the_repository, &pathspec, 0) < 0)
die(_("index file corrupt"));
if (interactive) {
char *old_index_env = NULL, *old_repo_index_file;
repo_hold_locked_index(the_repository, &index_lock,
LOCK_DIE_ON_ERROR);
refresh_cache_or_die(refresh_flags);
if (write_locked_index(the_repository->index, &index_lock, 0))
die(_("unable to create temporary index"));
old_repo_index_file = the_repository->index_file;
the_repository->index_file =
(char *)get_lock_file_path(&index_lock);
old_index_env = xstrdup_or_null(getenv(INDEX_ENVIRONMENT));
setenv(INDEX_ENVIRONMENT, the_repository->index_file, 1);
if (interactive_add(the_repository, argv, prefix, patch_interactive) != 0)
die(_("interactive add failed"));
the_repository->index_file = old_repo_index_file;
if (old_index_env && *old_index_env)
setenv(INDEX_ENVIRONMENT, old_index_env, 1);
else
unsetenv(INDEX_ENVIRONMENT);
FREE_AND_NULL(old_index_env);
discard_index(the_repository->index);
read_index_from(the_repository->index, get_lock_file_path(&index_lock),
repo_get_git_dir(the_repository));
if (cache_tree_update(the_repository->index, WRITE_TREE_SILENT) == 0) {
if (reopen_lock_file(&index_lock) < 0)
die(_("unable to write index file"));
if (write_locked_index(the_repository->index, &index_lock, 0))
die(_("unable to update temporary index"));
} else
warning(_("Failed to update main cache tree"));
commit_style = COMMIT_NORMAL;
ret = get_lock_file_path(&index_lock);
goto out;
}
/*
* 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.nr)) {
char *ps_matched = xcalloc(pathspec.nr, 1);
repo_hold_locked_index(the_repository, &index_lock,
LOCK_DIE_ON_ERROR);
add_files_to_cache(the_repository, also ? prefix : NULL,
&pathspec, ps_matched, 0, 0);
if (!all && report_path_error(ps_matched, &pathspec))
exit(128);
refresh_cache_or_die(refresh_flags);
cache_tree_update(the_repository->index, WRITE_TREE_SILENT);
if (write_locked_index(the_repository->index, &index_lock, 0))
die(_("unable to write new index file"));
commit_style = COMMIT_NORMAL;
ret = get_lock_file_path(&index_lock);
free(ps_matched);
goto out;
}
/*
* 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 (!only && !pathspec.nr) {
repo_hold_locked_index(the_repository, &index_lock,
LOCK_DIE_ON_ERROR);
refresh_cache_or_die(refresh_flags);
if (the_repository->index->cache_changed
|| !cache_tree_fully_valid(the_repository->index->cache_tree))
cache_tree_update(the_repository->index, WRITE_TREE_SILENT);
if (write_locked_index(the_repository->index, &index_lock,
COMMIT_LOCK | SKIP_IF_UNCHANGED))
die(_("unable to write new index file"));
commit_style = COMMIT_AS_IS;
ret = repo_get_index_file(the_repository);
goto out;
}
/*
* 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) {
if (whence == FROM_MERGE)
die(_("cannot do a partial commit during a merge."));
else if (is_from_cherry_pick(whence))
die(_("cannot do a partial commit during a cherry-pick."));
else if (is_from_rebase(whence))
die(_("cannot do a partial commit during a rebase."));
}
if (list_paths(&partial, !current_head ? NULL : "HEAD", &pathspec))
exit(1);
discard_index(the_repository->index);
if (repo_read_index(the_repository) < 0)
die(_("cannot read the index"));
repo_hold_locked_index(the_repository, &index_lock, LOCK_DIE_ON_ERROR);
add_remove_files(&partial);
refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL, NULL);
cache_tree_update(the_repository->index, WRITE_TREE_SILENT);
if (write_locked_index(the_repository->index, &index_lock, 0))
die(_("unable to write new index file"));
path = repo_git_path(the_repository, "next-index-%"PRIuMAX,
(uintmax_t) getpid());
hold_lock_file_for_update(&false_lock, path,
LOCK_DIE_ON_ERROR);
create_base_index(current_head);
add_remove_files(&partial);
refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL, NULL);
if (write_locked_index(the_repository->index, &false_lock, 0))
die(_("unable to write temporary index file"));
discard_index(the_repository->index);
ret = get_lock_file_path(&false_lock);
read_index_from(the_repository->index, ret, repo_get_git_dir(the_repository));
out:
string_list_clear(&partial, 0);
clear_pathspec(&pathspec);
free(path);
return ret;
}
static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
struct wt_status *s)
{
struct object_id oid;
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 = repo_get_oid(the_repository, s->reference, &oid) ? 1 : 0;
if (!s->is_initial)
oidcpy(&s->oid_commit, &oid);
s->status_format = status_format;
s->ignore_submodule_arg = ignore_submodule_arg;
wt_status_collect(s);
wt_status_print(s);
wt_status_collect_free_buffers(s);
return s->committable;
}
static int is_a_merge(const struct commit *current_head)
{
return !!(current_head->parents && current_head->parents->next);
}
static void assert_split_ident(struct ident_split *id, const struct strbuf *buf)
{
if (split_ident_line(id, buf->buf, buf->len) || !id->date_begin)
BUG("unable to parse our own ident: %s", buf->buf);
}
static void export_one(const char *var, const char *s, const char *e, int hack)
{
struct strbuf buf = STRBUF_INIT;
if (hack)
strbuf_addch(&buf, hack);
strbuf_add(&buf, s, e - s);
setenv(var, buf.buf, 1);
strbuf_release(&buf);
}
static int parse_force_date(const char *in, struct strbuf *out)
{
strbuf_addch(out, '@');
if (parse_date(in, out) < 0) {
int errors = 0;
unsigned long t = approxidate_careful(in, &errors);
if (errors)
return -1;
strbuf_addf(out, "%lu", t);
}
return 0;
}
static void set_ident_var(char **buf, char *val)
{
free(*buf);
*buf = val;
}
static void determine_author_info(struct strbuf *author_ident)
{
char *name, *email, *date;
struct ident_split author;
name = xstrdup_or_null(getenv("GIT_AUTHOR_NAME"));
email = xstrdup_or_null(getenv("GIT_AUTHOR_EMAIL"));
date = xstrdup_or_null(getenv("GIT_AUTHOR_DATE"));
if (author_message) {
struct ident_split ident;
size_t len;
const char *a;
a = find_commit_header(author_message_buffer, "author", &len);
if (!a)
die(_("commit '%s' lacks author header"), author_message);
if (split_ident_line(&ident, a, len) < 0)
die(_("commit '%s' has malformed author line"), author_message);
set_ident_var(&name, xmemdupz(ident.name_begin, ident.name_end - ident.name_begin));
set_ident_var(&email, xmemdupz(ident.mail_begin, ident.mail_end - ident.mail_begin));
if (ident.date_begin) {
struct strbuf date_buf = STRBUF_INIT;
strbuf_addch(&date_buf, '@');
strbuf_add(&date_buf, ident.date_begin, ident.date_end - ident.date_begin);
strbuf_addch(&date_buf, ' ');
strbuf_add(&date_buf, ident.tz_begin, ident.tz_end - ident.tz_begin);
set_ident_var(&date, strbuf_detach(&date_buf, NULL));
}
}
if (force_author) {
struct ident_split ident;
if (split_ident_line(&ident, force_author, strlen(force_author)) < 0)
die(_("malformed --author parameter"));
set_ident_var(&name, xmemdupz(ident.name_begin, ident.name_end - ident.name_begin));
set_ident_var(&email, xmemdupz(ident.mail_begin, ident.mail_end - ident.mail_begin));
}
if (force_date) {
struct strbuf date_buf = STRBUF_INIT;
if (parse_force_date(force_date, &date_buf))
die(_("invalid date format: %s"), force_date);
set_ident_var(&date, strbuf_detach(&date_buf, NULL));
}
strbuf_addstr(author_ident, fmt_ident(name, email, WANT_AUTHOR_IDENT, date,
IDENT_STRICT));
assert_split_ident(&author, author_ident);
export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
free(name);
free(email);
free(date);
}
static int author_date_is_interesting(void)
{
return author_message || force_date;
}
static void adjust_comment_line_char(const struct strbuf *sb)
{
char candidates[] = "#;@!$%^&|:";
char *candidate;
const char *p;
if (!memchr(sb->buf, candidates[0], sb->len)) {
free(comment_line_str_to_free);
comment_line_str = comment_line_str_to_free =
xstrfmt("%c", candidates[0]);
return;
}
p = sb->buf;
candidate = strchr(candidates, *p);
if (candidate)
*candidate = ' ';
for (p = sb->buf; *p; p++) {
if ((p[0] == '\n' || p[0] == '\r') && p[1]) {
candidate = strchr(candidates, p[1]);
if (candidate)
*candidate = ' ';
}
}
for (p = candidates; *p == ' '; p++)
;
if (!*p)
die(_("unable to select a comment character that is not used\n"
"in the current commit message"));
free(comment_line_str_to_free);
comment_line_str = comment_line_str_to_free = xstrfmt("%c", *p);
}
static void prepare_amend_commit(struct commit *commit, struct strbuf *sb,
struct pretty_print_context *ctx)
{
const char *buffer, *subject, *fmt;
buffer = repo_get_commit_buffer(the_repository, commit, NULL);
find_commit_subject(buffer, &subject);
/*
* If we amend the 'amend!' commit then we don't want to
* duplicate the subject line.
*/
fmt = starts_with(subject, "amend!") ? "%b" : "%B";
repo_format_commit_message(the_repository, commit, fmt, sb, ctx);
repo_unuse_commit_buffer(the_repository, commit, buffer);
}
static void change_data_free(void *util, const char *str UNUSED)
{
struct wt_status_change_data *d = util;
free(d->rename_source);
free(d);
}
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 committable;
struct strbuf sb = STRBUF_INIT;
const char *hook_arg1 = NULL;
const char *hook_arg2 = NULL;
int clean_message_contents = (cleanup_mode != COMMIT_MSG_CLEANUP_NONE);
int old_display_comment_prefix;
int invoked_hook;
/* This checks and barfs if author is badly specified */
determine_author_info(author_ident);
if (!no_verify && run_commit_hook(use_editor, index_file, &invoked_hook,
"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();
repo_format_commit_message(the_repository, c,
"squash! %s\n\n", &sb,
&ctx);
}
}
if (have_option_m && !fixup_message) {
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) {
char *buffer;
buffer = strstr(use_message_buffer, "\n\n");
if (buffer)
strbuf_addstr(&sb, skip_blank_lines(buffer + 2));
hook_arg1 = "commit";
hook_arg2 = use_message;
} else if (fixup_message) {
struct pretty_print_context ctx = {0};
struct commit *commit;
char *fmt;
commit = lookup_commit_reference_by_name(fixup_commit);
if (!commit)
die(_("could not lookup commit '%s'"), fixup_commit);
ctx.output_encoding = get_commit_output_encoding();
fmt = xstrfmt("%s! %%s\n\n", fixup_prefix);
repo_format_commit_message(the_repository, commit, fmt, &sb,
&ctx);
free(fmt);
hook_arg1 = "message";
/*
* Only `-m` commit message option is checked here, as
* it supports `--fixup` to append the commit message.
*
* The other commit message options `-c`/`-C`/`-F` are
* incompatible with all the forms of `--fixup` and
* have already errored out while parsing the `git commit`
* options.
*/
if (have_option_m && !strcmp(fixup_prefix, "fixup"))
strbuf_addbuf(&sb, &message);
if (!strcmp(fixup_prefix, "amend")) {
if (have_option_m)
die(_("options '%s' and '%s:%s' cannot be used together"), "-m", "--fixup", fixup_message);
prepare_amend_commit(commit, &sb, &ctx);
}
} else if (!stat(git_path_merge_msg(the_repository), &statbuf)) {
size_t merge_msg_start;
/*
* prepend SQUASH_MSG here if it exists and a
* "merge --squash" was originally performed
*/
if (!stat(git_path_squash_msg(the_repository), &statbuf)) {
if (strbuf_read_file(&sb, git_path_squash_msg(the_repository), 0) < 0)
die_errno(_("could not read SQUASH_MSG"));
hook_arg1 = "squash";
} else
hook_arg1 = "merge";
merge_msg_start = sb.len;
if (strbuf_read_file(&sb, git_path_merge_msg(the_repository), 0) < 0)
die_errno(_("could not read MERGE_MSG"));
if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS &&
wt_status_locate_end(sb.buf + merge_msg_start,
sb.len - merge_msg_start) <
sb.len - merge_msg_start)
s->added_cut_line = 1;
} else if (!stat(git_path_squash_msg(the_repository), &statbuf)) {
if (strbuf_read_file(&sb, git_path_squash_msg(the_repository), 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 (is_from_cherry_pick(whence) || whence == FROM_REBASE_PICK) {
hook_arg1 = "commit";
hook_arg2 = "CHERRY_PICK_HEAD";
}
if (squash_message) {
/*