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commit.c
1564 lines (1365 loc) · 43.7 KB
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commit.c
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/*
* 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"
#include "gpg-interface.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, 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 no_post_rewrite, allow_empty_message;
static char *untracked_files_arg, *force_date, *ignore_submodule_arg;
static char *sign_commit;
/*
* 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 = STRBUF_INIT;
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_BOOL('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"),
{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, "key id",
"GPG sign commit", PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
/* 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);
update_main_cache_tree(WRITE_TREE_SILENT);
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) {
update_main_cache_tree(WRITE_TREE_SILENT);
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 (update_main_cache_tree(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.