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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"
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[] =
"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"
"If the identity used for this commit is wrong, you can fix it with:\n"
"\n"
" git commit --amend --author='Your Name <you@example.com>'\n";
static const char empty_amend_advice[] =
"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 unsigned char head_sha1[20];
static 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;
static char *edit_message, *use_message;
static char *author_name, *author_email, *author_date;
static int all, edit_flag, also, interactive, only, amend, signoff;
static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
static int no_post_rewrite;
static char *untracked_files_arg, *force_date;
/*
* 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 int use_editor = 1, initial_commit, in_merge, include_status = 1;
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 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),
OPT__VERBOSE(&verbose),
OPT_GROUP("Commit message options"),
OPT_FILENAME('F', "file", &logfile, "read log 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", "specify 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_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('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_SET_INT(0, "porcelain", &status_format,
"show porcelain output format", 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" },
OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),
/* end commit contents options */
OPT_END()
};
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)
overlay_tree_on_cache(with_tree, 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(ce->name, list);
if (ce_skip_worktree(ce))
item->util = item; /* better a valid pointer than a fake one */
}
return report_path_error(m, pattern, prefix ? strlen(prefix) : 0);
}
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(void)
{
struct tree *tree;
struct unpack_trees_options opts;
struct tree_desc t;
if (initial_commit) {
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(head_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, int is_status)
{
int fd;
struct string_list partial;
const char **pathspec = NULL;
int refresh_flags = REFRESH_QUIET;
if (is_status)
refresh_flags |= REFRESH_UNMERGED;
if (interactive) {
if (interactive_add(argc, argv, prefix) != 0)
die("interactive add failed");
if (read_cache_preload(NULL) < 0)
die("index file corrupt");
commit_style = COMMIT_AS_IS;
return get_index_file();
}
if (*argv)
pathspec = get_pathspec(prefix, argv);
if (read_cache_preload(pathspec) < 0)
die("index file corrupt");
/*
* 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 (in_merge)
die("cannot do a partial commit during a merge.");
memset(&partial, 0, sizeof(partial));
partial.strdup_strings = 1;
if (list_paths(&partial, initial_commit ? 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();
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);
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 unsigned char *sha1)
{
struct commit *commit = lookup_commit(sha1);
if (!commit || parse_commit(commit))
die("could not parse HEAD commit");
return !!(commit->parents && commit->parents->next);
}
static const char sign_off_header[] = "Signed-off-by: ";
static void determine_author_info(void)
{
char *name, *email, *date;
name = getenv("GIT_AUTHOR_NAME");
email = getenv("GIT_AUTHOR_EMAIL");
date = getenv("GIT_AUTHOR_DATE");
if (use_message && !renew_authorship) {
const char *a, *lb, *rb, *eol;
a = strstr(use_message_buffer, "\nauthor ");
if (!a)
die("invalid commit: %s", use_message);
lb = strchrnul(a + strlen("\nauthor "), '<');
rb = strchrnul(lb, '>');
eol = strchrnul(rb, '\n');
if (!*lb || !*rb || !*eol)
die("invalid commit: %s", use_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;
author_name = name;
author_email = email;
author_date = date;
}
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 int prepare_to_commit(const char *index_file, const char *prefix,
struct wt_status *s)
{
struct stat statbuf;
int commitable, saved_color_setting;
struct strbuf sb = STRBUF_INIT;
char *buffer;
FILE *fp;
const char *hook_arg1 = NULL;
const char *hook_arg2 = NULL;
int ident_shown = 0;
if (!no_verify && run_hook(index_file, "pre-commit", NULL))
return 0;
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 (!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 && !stat(template_file, &statbuf)) {
if (strbuf_read_file(&sb, template_file, 0) < 0)
die_errno("could not read '%s'", template_file);
hook_arg1 = "template";
}
/*
* This final case does not modify the template message,
* it just sets the argument to the prepare-commit-msg hook.
*/
else if (in_merge)
hook_arg1 = "merge";
fp = fopen(git_path(commit_editmsg), "w");
if (fp == NULL)
die_errno("could not open '%s'", git_path(commit_editmsg));
if (cleanup_mode != CLEANUP_NONE)
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, fp) < sb.len)
die_errno("could not write commit template");
strbuf_release(&sb);
determine_author_info();
/* This checks if committer ident is explicitly given */
git_committer_info(0);
if (use_editor && include_status) {
char *author_ident;
const char *committer_ident;
if (in_merge)
fprintf(fp,
"#\n"
"# It looks like you may be committing a MERGE.\n"
"# If this is not correct, please remove the file\n"
"# %s\n"
"# and try again.\n"
"#\n",
git_path("MERGE_HEAD"));
fprintf(fp,
"\n"
"# Please enter the commit message for your changes.");
if (cleanup_mode == CLEANUP_ALL)
fprintf(fp,
" Lines starting\n"
"# with '#' will be ignored, and an empty"
" message aborts the commit.\n");
else /* CLEANUP_SPACE, that is. */
fprintf(fp,
" 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)
fprintf(fp, "# %s\n", only_include_assumed);
author_ident = xstrdup(fmt_name(author_name, author_email));
committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
getenv("GIT_COMMITTER_EMAIL"));
if (strcmp(author_ident, committer_ident))
fprintf(fp,
"%s"
"# Author: %s\n",
ident_shown++ ? "" : "#\n",
author_ident);
free(author_ident);
if (!user_ident_sufficiently_given())
fprintf(fp,
"%s"
"# Committer: %s\n",
ident_shown++ ? "" : "#\n",
committer_ident);
if (ident_shown)
fprintf(fp, "#\n");
saved_color_setting = s->use_color;
s->use_color = 0;
commitable = run_status(fp, index_file, prefix, 1, s);
s->use_color = saved_color_setting;
} 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);
}
fclose(fp);
if (!commitable && !in_merge && !allow_empty &&
!(amend && is_a_merge(head_sha1))) {
run_status(stdout, index_file, prefix, 0, s);
if (amend)
fputs(empty_amend_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] = { index, NULL };
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 int parse_and_validate_options(int argc, const char *argv[],
const char * const usage[],
const char *prefix,
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)
use_editor = 0;
if (edit_flag)
use_editor = 1;
if (!use_editor)
setenv("GIT_EDITOR", ":", 1);
if (get_sha1("HEAD", head_sha1))
initial_commit = 1;
/* Sanity check options */
if (amend && initial_commit)
die("You have nothing to amend.");
if (amend && in_merge)
die("You are in the middle of a merge -- cannot amend.");
if (use_message)
f++;
if (edit_message)
f++;
if (logfile)
f++;
if (f > 1)
die("Only one of -c/-C/-F can be used.");
if (message.len && f > 0)
die("Option -m cannot be combined with -c/-C/-F.");
if (edit_message)
use_message = edit_message;
if (amend && !use_message)
use_message = "HEAD";
if (!use_message && renew_authorship)
die("--reset-author can be used only with -C, -c or --amend.");
if (use_message) {
unsigned char sha1[20];
static char utf8[] = "UTF-8";
const char *out_enc;
char *enc, *end;
struct commit *commit;
if (get_sha1(use_message, sha1))
die("could not lookup commit %s", use_message);
commit = lookup_commit_reference(sha1);
if (!commit || parse_commit(commit))
die("could not parse commit %s", use_message);
enc = strstr(commit->buffer, "\nencoding");
if (enc) {
end = strchr(enc + 10, '\n');
enc = xstrndup(enc + 10, end - (enc + 10));
} else {
enc = utf8;
}
out_enc = git_commit_encoding ? git_commit_encoding : utf8;
if (strcmp(out_enc, enc))
use_message_buffer =
reencode_string(commit->buffer, out_enc, 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 (use_message_buffer == NULL)
use_message_buffer = xstrdup(commit->buffer);
if (enc != utf8)
free(enc);
}
if (!!also + !!only + !!all + !!interactive > 1)
die("Only one of --include/--only/--all/--interactive 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.");
else if (interactive && argc > 0)
die("Paths with --interactive 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,
struct wt_status *s)
{
int commitable;
const char *index_file;
index_file = prepare_index(argc, argv, prefix, 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, "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, -1);
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),
OPT_SET_INT('s', "short", &status_format,
"show status concisely", STATUS_FORMAT_SHORT),
OPT_SET_INT(0, "porcelain", &status_format,
"show porcelain output format",
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_END(),
};
if (null_termination && status_format == STATUS_FORMAT_LONG)
status_format = STATUS_FORMAT_PORCELAIN;
wt_status_prepare(&s);
git_config(git_status_config, &s);
in_merge = file_exists(git_path("MERGE_HEAD"));
argc = parse_options(argc, argv, prefix,
builtin_status_options,
builtin_status_usage, 0);
handle_untracked_files_arg(&s);
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) {
if (active_cache_changed &&
!write_cache(fd, active_cache, active_nr))
commit_locked_index(&index_lock);
else
rollback_lock_file(&index_lock);
}
s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
s.in_merge = in_merge;
wt_status_collect(&s);
if (s.relative_paths)
s.prefix = prefix;
if (s.use_color == -1)
s.use_color = git_use_color_default;
if (diff_use_color_default == -1)
diff_use_color_default = git_use_color_default;
switch (status_format) {
case STATUS_FORMAT_SHORT:
wt_shortstatus_print(&s, null_termination);
break;
case STATUS_FORMAT_PORCELAIN:
wt_porcelain_print(&s, null_termination);
break;
case STATUS_FORMAT_LONG:
s.verbose = verbose;
wt_status_print(&s);
break;
}
return 0;
}
static void print_summary(const char *prefix, const unsigned char *sha1)
{
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.abbrev = 0;
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.rename_limit = 100;
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;
const char *index_file, *reflog_msg;
char *nl, *p;
unsigned char commit_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;
wt_status_prepare(&s);
git_config(git_commit_config, &s);
in_merge = file_exists(git_path("MERGE_HEAD"));
s.in_merge = in_merge;
if (s.use_color == -1)
s.use_color = git_use_color_default;
argc = parse_and_validate_options(argc, argv, builtin_commit_usage,
prefix, &s);
if (dry_run) {
if (diff_use_color_default == -1)
diff_use_color_default = git_use_color_default;
return dry_run_commit(argc, argv, prefix, &s);
}
index_file = prepare_index(argc, argv, prefix, 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, &s)) {
rollback_index_files();
return 1;
}
/* Determine parents */
reflog_msg = getenv("GIT_REFLOG_ACTION");
if (initial_commit) {
if (!reflog_msg)
reflog_msg = "commit (initial)";
} else if (amend) {
struct commit_list *c;
struct commit *commit;
if (!reflog_msg)
reflog_msg = "commit (amend)";
commit = lookup_commit(head_sha1);
if (!commit || parse_commit(commit))
die("could not parse HEAD commit");
for (c = commit->parents; c; c = c->next)
pptr = &commit_list_insert(c->item, pptr)->next;
} else if (in_merge) {
struct strbuf m = STRBUF_INIT;
FILE *fp;
if (!reflog_msg)
reflog_msg = "commit (merge)";
pptr = &commit_list_insert(lookup_commit(head_sha1), 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);
pptr = &commit_list_insert(lookup_commit(sha1), 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 = "commit";
pptr = &commit_list_insert(lookup_commit(head_sha1), 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)) {
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, commit_sha1,
fmt_ident(author_name, author_email, author_date,
IDENT_ERROR_ON_NO_NAME))) {
rollback_index_files();
die("failed to write commit object");
}
ref_lock = lock_any_ref_for_update("HEAD",
initial_commit ? NULL : head_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, commit_sha1, sb.buf) < 0) {
rollback_index_files();
die("cannot update HEAD ref");
}
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) {
copy_note_for_rewrite(cfg, head_sha1, commit_sha1);
finish_copy_notes_for_rewrite(cfg);
}
run_rewrite_hook(head_sha1, commit_sha1);
}
if (!quiet)
print_summary(prefix, commit_sha1);
return 0;
}
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