blob: 937da6c0eeff41d7ead9e116ea81f31f3d0cede0 [file] [log] [blame]
#include "builtin.h"
#include "abspath.h"
#include "advice.h"
#include "checkout.h"
#include "config.h"
#include "copy.h"
#include "dir.h"
#include "environment.h"
#include "gettext.h"
#include "hex.h"
#include "object-file.h"
#include "object-name.h"
#include "parse-options.h"
#include "path.h"
#include "strvec.h"
#include "branch.h"
#include "read-cache-ll.h"
#include "refs.h"
#include "remote.h"
#include "repository.h"
#include "run-command.h"
#include "hook.h"
#include "sigchain.h"
#include "submodule.h"
#include "utf8.h"
#include "worktree.h"
#include "quote.h"
#define BUILTIN_WORKTREE_ADD_USAGE \
N_("git worktree add [-f] [--detach] [--checkout] [--lock [--reason <string>]]\n" \
" [--orphan] [(-b | -B) <new-branch>] <path> [<commit-ish>]")
#define BUILTIN_WORKTREE_LIST_USAGE \
N_("git worktree list [-v | --porcelain [-z]]")
#define BUILTIN_WORKTREE_LOCK_USAGE \
N_("git worktree lock [--reason <string>] <worktree>")
#define BUILTIN_WORKTREE_MOVE_USAGE \
N_("git worktree move <worktree> <new-path>")
#define BUILTIN_WORKTREE_PRUNE_USAGE \
N_("git worktree prune [-n] [-v] [--expire <expire>]")
#define BUILTIN_WORKTREE_REMOVE_USAGE \
N_("git worktree remove [-f] <worktree>")
#define BUILTIN_WORKTREE_REPAIR_USAGE \
N_("git worktree repair [<path>...]")
#define BUILTIN_WORKTREE_UNLOCK_USAGE \
N_("git worktree unlock <worktree>")
#define WORKTREE_ADD_DWIM_ORPHAN_INFER_TEXT \
_("No possible source branch, inferring '--orphan'")
#define WORKTREE_ADD_ORPHAN_WITH_DASH_B_HINT_TEXT \
_("If you meant to create a worktree containing a new unborn branch\n" \
"(branch with no commits) for this repository, you can do so\n" \
"using the --orphan flag:\n" \
"\n" \
" git worktree add --orphan -b %s %s\n")
#define WORKTREE_ADD_ORPHAN_NO_DASH_B_HINT_TEXT \
_("If you meant to create a worktree containing a new unborn branch\n" \
"(branch with no commits) for this repository, you can do so\n" \
"using the --orphan flag:\n" \
"\n" \
" git worktree add --orphan %s\n")
static const char * const git_worktree_usage[] = {
BUILTIN_WORKTREE_ADD_USAGE,
BUILTIN_WORKTREE_LIST_USAGE,
BUILTIN_WORKTREE_LOCK_USAGE,
BUILTIN_WORKTREE_MOVE_USAGE,
BUILTIN_WORKTREE_PRUNE_USAGE,
BUILTIN_WORKTREE_REMOVE_USAGE,
BUILTIN_WORKTREE_REPAIR_USAGE,
BUILTIN_WORKTREE_UNLOCK_USAGE,
NULL
};
static const char * const git_worktree_add_usage[] = {
BUILTIN_WORKTREE_ADD_USAGE,
NULL,
};
static const char * const git_worktree_list_usage[] = {
BUILTIN_WORKTREE_LIST_USAGE,
NULL
};
static const char * const git_worktree_lock_usage[] = {
BUILTIN_WORKTREE_LOCK_USAGE,
NULL
};
static const char * const git_worktree_move_usage[] = {
BUILTIN_WORKTREE_MOVE_USAGE,
NULL
};
static const char * const git_worktree_prune_usage[] = {
BUILTIN_WORKTREE_PRUNE_USAGE,
NULL
};
static const char * const git_worktree_remove_usage[] = {
BUILTIN_WORKTREE_REMOVE_USAGE,
NULL
};
static const char * const git_worktree_repair_usage[] = {
BUILTIN_WORKTREE_REPAIR_USAGE,
NULL
};
static const char * const git_worktree_unlock_usage[] = {
BUILTIN_WORKTREE_UNLOCK_USAGE,
NULL
};
struct add_opts {
int force;
int detach;
int quiet;
int checkout;
int orphan;
const char *keep_locked;
};
static int show_only;
static int verbose;
static int guess_remote;
static timestamp_t expire;
static int git_worktree_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
if (!strcmp(var, "worktree.guessremote")) {
guess_remote = git_config_bool(var, value);
return 0;
}
return git_default_config(var, value, ctx, cb);
}
static int delete_git_dir(const char *id)
{
struct strbuf sb = STRBUF_INIT;
int ret;
strbuf_addstr(&sb, git_common_path("worktrees/%s", id));
ret = remove_dir_recursively(&sb, 0);
if (ret < 0 && errno == ENOTDIR)
ret = unlink(sb.buf);
if (ret)
error_errno(_("failed to delete '%s'"), sb.buf);
strbuf_release(&sb);
return ret;
}
static void delete_worktrees_dir_if_empty(void)
{
rmdir(git_path("worktrees")); /* ignore failed removal */
}
static void prune_worktree(const char *id, const char *reason)
{
if (show_only || verbose)
fprintf_ln(stderr, _("Removing %s/%s: %s"), "worktrees", id, reason);
if (!show_only)
delete_git_dir(id);
}
static int prune_cmp(const void *a, const void *b)
{
const struct string_list_item *x = a;
const struct string_list_item *y = b;
int c;
if ((c = fspathcmp(x->string, y->string)))
return c;
/*
* paths same; prune_dupes() removes all but the first worktree entry
* having the same path, so sort main worktree ('util' is NULL) above
* linked worktrees ('util' not NULL) since main worktree can't be
* removed
*/
if (!x->util)
return -1;
if (!y->util)
return 1;
/* paths same; sort by .git/worktrees/<id> */
return strcmp(x->util, y->util);
}
static void prune_dups(struct string_list *l)
{
int i;
QSORT(l->items, l->nr, prune_cmp);
for (i = 1; i < l->nr; i++) {
if (!fspathcmp(l->items[i].string, l->items[i - 1].string))
prune_worktree(l->items[i].util, "duplicate entry");
}
}
static void prune_worktrees(void)
{
struct strbuf reason = STRBUF_INIT;
struct strbuf main_path = STRBUF_INIT;
struct string_list kept = STRING_LIST_INIT_DUP;
DIR *dir = opendir(git_path("worktrees"));
struct dirent *d;
if (!dir)
return;
while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) {
char *path;
strbuf_reset(&reason);
if (should_prune_worktree(d->d_name, &reason, &path, expire))
prune_worktree(d->d_name, reason.buf);
else if (path)
string_list_append_nodup(&kept, path)->util = xstrdup(d->d_name);
}
closedir(dir);
strbuf_add_absolute_path(&main_path, get_git_common_dir());
/* massage main worktree absolute path to match 'gitdir' content */
strbuf_strip_suffix(&main_path, "/.");
string_list_append_nodup(&kept, strbuf_detach(&main_path, NULL));
prune_dups(&kept);
string_list_clear(&kept, 1);
if (!show_only)
delete_worktrees_dir_if_empty();
strbuf_release(&reason);
}
static int prune(int ac, const char **av, const char *prefix)
{
struct option options[] = {
OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
OPT__VERBOSE(&verbose, N_("report pruned working trees")),
OPT_EXPIRY_DATE(0, "expire", &expire,
N_("expire working trees older than <time>")),
OPT_END()
};
expire = TIME_MAX;
ac = parse_options(ac, av, prefix, options, git_worktree_prune_usage,
0);
if (ac)
usage_with_options(git_worktree_prune_usage, options);
prune_worktrees();
return 0;
}
static char *junk_work_tree;
static char *junk_git_dir;
static int is_junk;
static pid_t junk_pid;
static void remove_junk(void)
{
struct strbuf sb = STRBUF_INIT;
if (!is_junk || getpid() != junk_pid)
return;
if (junk_git_dir) {
strbuf_addstr(&sb, junk_git_dir);
remove_dir_recursively(&sb, 0);
strbuf_reset(&sb);
}
if (junk_work_tree) {
strbuf_addstr(&sb, junk_work_tree);
remove_dir_recursively(&sb, 0);
}
strbuf_release(&sb);
}
static void remove_junk_on_signal(int signo)
{
remove_junk();
sigchain_pop(signo);
raise(signo);
}
static const char *worktree_basename(const char *path, int *olen)
{
const char *name;
int len;
len = strlen(path);
while (len && is_dir_sep(path[len - 1]))
len--;
for (name = path + len - 1; name > path; name--)
if (is_dir_sep(*name)) {
name++;
break;
}
*olen = len;
return name;
}
/* check that path is viable location for worktree */
static void check_candidate_path(const char *path,
int force,
struct worktree **worktrees,
const char *cmd)
{
struct worktree *wt;
int locked;
if (file_exists(path) && !is_empty_dir(path))
die(_("'%s' already exists"), path);
wt = find_worktree_by_path(worktrees, path);
if (!wt)
return;
locked = !!worktree_lock_reason(wt);
if ((!locked && force) || (locked && force > 1)) {
if (delete_git_dir(wt->id))
die(_("unusable worktree destination '%s'"), path);
return;
}
if (locked)
die(_("'%s' is a missing but locked worktree;\nuse '%s -f -f' to override, or 'unlock' and 'prune' or 'remove' to clear"), path, cmd);
else
die(_("'%s' is a missing but already registered worktree;\nuse '%s -f' to override, or 'prune' or 'remove' to clear"), path, cmd);
}
static void copy_sparse_checkout(const char *worktree_git_dir)
{
char *from_file = git_pathdup("info/sparse-checkout");
char *to_file = xstrfmt("%s/info/sparse-checkout", worktree_git_dir);
if (file_exists(from_file)) {
if (safe_create_leading_directories(to_file) ||
copy_file(to_file, from_file, 0666))
error(_("failed to copy '%s' to '%s'; sparse-checkout may not work correctly"),
from_file, to_file);
}
free(from_file);
free(to_file);
}
static void copy_filtered_worktree_config(const char *worktree_git_dir)
{
char *from_file = git_pathdup("config.worktree");
char *to_file = xstrfmt("%s/config.worktree", worktree_git_dir);
if (file_exists(from_file)) {
struct config_set cs = { { 0 } };
int bare;
if (safe_create_leading_directories(to_file) ||
copy_file(to_file, from_file, 0666)) {
error(_("failed to copy worktree config from '%s' to '%s'"),
from_file, to_file);
goto worktree_copy_cleanup;
}
git_configset_init(&cs);
git_configset_add_file(&cs, from_file);
if (!git_configset_get_bool(&cs, "core.bare", &bare) &&
bare &&
git_config_set_multivar_in_file_gently(
to_file, "core.bare", NULL, "true", NULL, 0))
error(_("failed to unset '%s' in '%s'"),
"core.bare", to_file);
if (!git_configset_get(&cs, "core.worktree") &&
git_config_set_in_file_gently(to_file,
"core.worktree", NULL, NULL))
error(_("failed to unset '%s' in '%s'"),
"core.worktree", to_file);
git_configset_clear(&cs);
}
worktree_copy_cleanup:
free(from_file);
free(to_file);
}
static int checkout_worktree(const struct add_opts *opts,
struct strvec *child_env)
{
struct child_process cp = CHILD_PROCESS_INIT;
cp.git_cmd = 1;
strvec_pushl(&cp.args, "reset", "--hard", "--no-recurse-submodules", NULL);
if (opts->quiet)
strvec_push(&cp.args, "--quiet");
strvec_pushv(&cp.env, child_env->v);
return run_command(&cp);
}
static int make_worktree_orphan(const char * ref, const struct add_opts *opts,
struct strvec *child_env)
{
struct strbuf symref = STRBUF_INIT;
struct child_process cp = CHILD_PROCESS_INIT;
validate_new_branchname(ref, &symref, 0);
strvec_pushl(&cp.args, "symbolic-ref", "HEAD", symref.buf, NULL);
if (opts->quiet)
strvec_push(&cp.args, "--quiet");
strvec_pushv(&cp.env, child_env->v);
strbuf_release(&symref);
cp.git_cmd = 1;
return run_command(&cp);
}
static int add_worktree(const char *path, const char *refname,
const struct add_opts *opts)
{
struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
struct strbuf sb = STRBUF_INIT, realpath = STRBUF_INIT;
const char *name;
struct strvec child_env = STRVEC_INIT;
unsigned int counter = 0;
int len, ret;
struct strbuf symref = STRBUF_INIT;
struct commit *commit = NULL;
int is_branch = 0;
struct strbuf sb_name = STRBUF_INIT;
struct worktree **worktrees, *wt = NULL;
struct ref_store *wt_refs;
worktrees = get_worktrees();
check_candidate_path(path, opts->force, worktrees, "add");
free_worktrees(worktrees);
worktrees = NULL;
/* is 'refname' a branch or commit? */
if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
refs_ref_exists(get_main_ref_store(the_repository), symref.buf)) {
is_branch = 1;
if (!opts->force)
die_if_checked_out(symref.buf, 0);
}
commit = lookup_commit_reference_by_name(refname);
if (!commit && !opts->orphan)
die(_("invalid reference: %s"), refname);
name = worktree_basename(path, &len);
strbuf_add(&sb, name, path + len - name);
sanitize_refname_component(sb.buf, &sb_name);
if (!sb_name.len)
BUG("How come '%s' becomes empty after sanitization?", sb.buf);
strbuf_reset(&sb);
name = sb_name.buf;
git_path_buf(&sb_repo, "worktrees/%s", name);
len = sb_repo.len;
if (safe_create_leading_directories_const(sb_repo.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_repo.buf);
while (mkdir(sb_repo.buf, 0777)) {
counter++;
if ((errno != EEXIST) || !counter /* overflow */)
die_errno(_("could not create directory of '%s'"),
sb_repo.buf);
strbuf_setlen(&sb_repo, len);
strbuf_addf(&sb_repo, "%d", counter);
}
name = strrchr(sb_repo.buf, '/') + 1;
junk_pid = getpid();
atexit(remove_junk);
sigchain_push_common(remove_junk_on_signal);
junk_git_dir = xstrdup(sb_repo.buf);
is_junk = 1;
/*
* lock the incomplete repo so prune won't delete it, unlock
* after the preparation is over.
*/
strbuf_addf(&sb, "%s/locked", sb_repo.buf);
if (opts->keep_locked)
write_file(sb.buf, "%s", opts->keep_locked);
else
write_file(sb.buf, _("initializing"));
strbuf_addf(&sb_git, "%s/.git", path);
if (safe_create_leading_directories_const(sb_git.buf))
die_errno(_("could not create leading directories of '%s'"),
sb_git.buf);
junk_work_tree = xstrdup(path);
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/gitdir", sb_repo.buf);
strbuf_realpath(&realpath, sb_git.buf, 1);
write_file(sb.buf, "%s", realpath.buf);
strbuf_realpath(&realpath, get_git_common_dir(), 1);
write_file(sb_git.buf, "gitdir: %s/worktrees/%s",
realpath.buf, name);
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
write_file(sb.buf, "../..");
/*
* Set up the ref store of the worktree and create the HEAD reference.
*/
wt = get_linked_worktree(name, 1);
if (!wt) {
ret = error(_("could not find created worktree '%s'"), name);
goto done;
}
wt_refs = get_worktree_ref_store(wt);
ret = refs_init_db(wt_refs, REFS_INIT_DB_IS_WORKTREE, &sb);
if (ret)
goto done;
if (!is_branch && commit)
ret = refs_update_ref(wt_refs, NULL, "HEAD", &commit->object.oid,
NULL, 0, UPDATE_REFS_MSG_ON_ERR);
else
ret = refs_update_symref(wt_refs, "HEAD", symref.buf, NULL);
if (ret)
goto done;
/*
* If the current worktree has sparse-checkout enabled, then copy
* the sparse-checkout patterns from the current worktree.
*/
if (core_apply_sparse_checkout)
copy_sparse_checkout(sb_repo.buf);
/*
* If we are using worktree config, then copy all current config
* values from the current worktree into the new one, that way the
* new worktree behaves the same as this one.
*/
if (the_repository->repository_format_worktree_config)
copy_filtered_worktree_config(sb_repo.buf);
strvec_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
strvec_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
if (opts->orphan &&
(ret = make_worktree_orphan(refname, opts, &child_env)))
goto done;
if (opts->checkout &&
(ret = checkout_worktree(opts, &child_env)))
goto done;
is_junk = 0;
FREE_AND_NULL(junk_work_tree);
FREE_AND_NULL(junk_git_dir);
done:
if (ret || !opts->keep_locked) {
strbuf_reset(&sb);
strbuf_addf(&sb, "%s/locked", sb_repo.buf);
unlink_or_warn(sb.buf);
}
/*
* Hook failure does not warrant worktree deletion, so run hook after
* is_junk is cleared, but do return appropriate code when hook fails.
*/
if (!ret && opts->checkout && !opts->orphan) {
struct run_hooks_opt opt = RUN_HOOKS_OPT_INIT;
strvec_pushl(&opt.env, "GIT_DIR", "GIT_WORK_TREE", NULL);
strvec_pushl(&opt.args,
oid_to_hex(null_oid()),
oid_to_hex(&commit->object.oid),
"1",
NULL);
opt.dir = path;
ret = run_hooks_opt("post-checkout", &opt);
}
strvec_clear(&child_env);
strbuf_release(&sb);
strbuf_release(&symref);
strbuf_release(&sb_repo);
strbuf_release(&sb_git);
strbuf_release(&sb_name);
strbuf_release(&realpath);
free_worktree(wt);
return ret;
}
static void print_preparing_worktree_line(int detach,
const char *branch,
const char *new_branch,
int force_new_branch)
{
if (force_new_branch) {
struct commit *commit = lookup_commit_reference_by_name(new_branch);
if (!commit)
fprintf_ln(stderr, _("Preparing worktree (new branch '%s')"), new_branch);
else
fprintf_ln(stderr, _("Preparing worktree (resetting branch '%s'; was at %s)"),
new_branch,
repo_find_unique_abbrev(the_repository, &commit->object.oid, DEFAULT_ABBREV));
} else if (new_branch) {
fprintf_ln(stderr, _("Preparing worktree (new branch '%s')"), new_branch);
} else {
struct strbuf s = STRBUF_INIT;
if (!detach && !strbuf_check_branch_ref(&s, branch) &&
refs_ref_exists(get_main_ref_store(the_repository), s.buf))
fprintf_ln(stderr, _("Preparing worktree (checking out '%s')"),
branch);
else {
struct commit *commit = lookup_commit_reference_by_name(branch);
if (!commit)
BUG(_("unreachable: invalid reference: %s"), branch);
fprintf_ln(stderr, _("Preparing worktree (detached HEAD %s)"),
repo_find_unique_abbrev(the_repository, &commit->object.oid, DEFAULT_ABBREV));
}
strbuf_release(&s);
}
}
/**
* Callback to short circuit iteration over refs on the first reference
* corresponding to a valid oid.
*
* Returns 0 on failure and non-zero on success.
*/
static int first_valid_ref(const char *refname UNUSED,
const struct object_id *oid UNUSED,
int flags UNUSED,
void *cb_data UNUSED)
{
return 1;
}
/**
* Verifies HEAD and determines whether there exist any valid local references.
*
* - Checks whether HEAD points to a valid reference.
*
* - Checks whether any valid local branches exist.
*
* - Emits a warning if there exist any valid branches but HEAD does not point
* to a valid reference.
*
* Returns 1 if any of the previous checks are true, otherwise returns 0.
*/
static int can_use_local_refs(const struct add_opts *opts)
{
if (refs_head_ref(get_main_ref_store(the_repository), first_valid_ref, NULL)) {
return 1;
} else if (refs_for_each_branch_ref(get_main_ref_store(the_repository), first_valid_ref, NULL)) {
if (!opts->quiet) {
struct strbuf path = STRBUF_INIT;
struct strbuf contents = STRBUF_INIT;
strbuf_add_real_path(&path, get_worktree_git_dir(NULL));
strbuf_addstr(&path, "/HEAD");
strbuf_read_file(&contents, path.buf, 64);
strbuf_stripspace(&contents, NULL);
strbuf_strip_suffix(&contents, "\n");
warning(_("HEAD points to an invalid (or orphaned) reference.\n"
"HEAD path: '%s'\n"
"HEAD contents: '%s'"),
path.buf, contents.buf);
strbuf_release(&path);
strbuf_release(&contents);
}
return 1;
}
return 0;
}
/**
* Reports whether the necessary flags were set and whether the repository has
* remote references to attempt DWIM tracking of upstream branches.
*
* 1. Checks that `--guess-remote` was used or `worktree.guessRemote = true`.
*
* 2. Checks whether any valid remote branches exist.
*
* 3. Checks that there exists at least one remote and emits a warning/error
* if both checks 1. and 2. are false (can be bypassed with `--force`).
*
* Returns 1 if checks 1. and 2. are true, otherwise 0.
*/
static int can_use_remote_refs(const struct add_opts *opts)
{
if (!guess_remote) {
return 0;
} else if (refs_for_each_remote_ref(get_main_ref_store(the_repository), first_valid_ref, NULL)) {
return 1;
} else if (!opts->force && remote_get(NULL)) {
die(_("No local or remote refs exist despite at least one remote\n"
"present, stopping; use 'add -f' to override or fetch a remote first"));
}
return 0;
}
/**
* Determines whether `--orphan` should be inferred in the evaluation of
* `worktree add path/` or `worktree add -b branch path/` and emits an error
* if the supplied arguments would produce an illegal combination when the
* `--orphan` flag is included.
*
* `opts` and `opt_track` contain the other options & flags supplied to the
* command.
*
* remote determines whether to check `can_use_remote_refs()` or not. This
* is primarily to differentiate between the basic `add` DWIM and `add -b`.
*
* Returns 1 when inferring `--orphan`, 0 otherwise, and emits an error when
* `--orphan` is inferred but doing so produces an illegal combination of
* options and flags. Additionally produces an error when remote refs are
* checked and the repo is in a state that looks like the user added a remote
* but forgot to fetch (and did not override the warning with -f).
*/
static int dwim_orphan(const struct add_opts *opts, int opt_track, int remote)
{
if (can_use_local_refs(opts)) {
return 0;
} else if (remote && can_use_remote_refs(opts)) {
return 0;
} else if (!opts->quiet) {
fprintf_ln(stderr, WORKTREE_ADD_DWIM_ORPHAN_INFER_TEXT);
}
if (opt_track) {
die(_("options '%s' and '%s' cannot be used together"),
"--orphan", "--track");
} else if (!opts->checkout) {
die(_("options '%s' and '%s' cannot be used together"),
"--orphan", "--no-checkout");
}
return 1;
}
static char *dwim_branch(const char *path, char **new_branch)
{
int n;
int branch_exists;
const char *s = worktree_basename(path, &n);
char *branchname = xstrndup(s, n);
struct strbuf ref = STRBUF_INIT;
branch_exists = !strbuf_check_branch_ref(&ref, branchname) &&
refs_ref_exists(get_main_ref_store(the_repository),
ref.buf);
strbuf_release(&ref);
if (branch_exists)
return branchname;
*new_branch = branchname;
if (guess_remote) {
struct object_id oid;
char *remote = unique_tracking_name(*new_branch, &oid, NULL);
return remote;
}
return NULL;
}
static int add(int ac, const char **av, const char *prefix)
{
struct add_opts opts;
const char *new_branch_force = NULL;
char *path;
const char *branch;
char *branch_to_free = NULL;
char *new_branch_to_free = NULL;
const char *new_branch = NULL;
const char *opt_track = NULL;
const char *lock_reason = NULL;
int keep_locked = 0;
int used_new_branch_options;
struct option options[] = {
OPT__FORCE(&opts.force,
N_("checkout <branch> even if already checked out in other worktree"),
PARSE_OPT_NOCOMPLETE),
OPT_STRING('b', NULL, &new_branch, N_("branch"),
N_("create a new branch")),
OPT_STRING('B', NULL, &new_branch_force, N_("branch"),
N_("create or reset a branch")),
OPT_BOOL(0, "orphan", &opts.orphan, N_("create unborn branch")),
OPT_BOOL('d', "detach", &opts.detach, N_("detach HEAD at named commit")),
OPT_BOOL(0, "checkout", &opts.checkout, N_("populate the new working tree")),
OPT_BOOL(0, "lock", &keep_locked, N_("keep the new working tree locked")),
OPT_STRING(0, "reason", &lock_reason, N_("string"),
N_("reason for locking")),
OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
OPT_PASSTHRU(0, "track", &opt_track, NULL,
N_("set up tracking mode (see git-branch(1))"),
PARSE_OPT_NOARG | PARSE_OPT_OPTARG),
OPT_BOOL(0, "guess-remote", &guess_remote,
N_("try to match the new branch name with a remote-tracking branch")),
OPT_END()
};
int ret;
memset(&opts, 0, sizeof(opts));
opts.checkout = 1;
ac = parse_options(ac, av, prefix, options, git_worktree_add_usage, 0);
if (!!opts.detach + !!new_branch + !!new_branch_force > 1)
die(_("options '%s', '%s', and '%s' cannot be used together"), "-b", "-B", "--detach");
if (opts.detach && opts.orphan)
die(_("options '%s' and '%s' cannot be used together"),
"--orphan", "--detach");
if (opts.orphan && opt_track)
die(_("options '%s' and '%s' cannot be used together"),
"--orphan", "--track");
if (opts.orphan && !opts.checkout)
die(_("options '%s' and '%s' cannot be used together"),
"--orphan", "--no-checkout");
if (opts.orphan && ac == 2)
die(_("option '%s' and commit-ish cannot be used together"),
"--orphan");
if (lock_reason && !keep_locked)
die(_("the option '%s' requires '%s'"), "--reason", "--lock");
if (lock_reason)
opts.keep_locked = lock_reason;
else if (keep_locked)
opts.keep_locked = _("added with --lock");
if (ac < 1 || ac > 2)
usage_with_options(git_worktree_add_usage, options);
path = prefix_filename(prefix, av[0]);
branch = ac < 2 ? "HEAD" : av[1];
used_new_branch_options = new_branch || new_branch_force;
if (!strcmp(branch, "-"))
branch = "@{-1}";
if (new_branch_force) {
struct strbuf symref = STRBUF_INIT;
new_branch = new_branch_force;
if (!opts.force &&
!strbuf_check_branch_ref(&symref, new_branch) &&
refs_ref_exists(get_main_ref_store(the_repository), symref.buf))
die_if_checked_out(symref.buf, 0);
strbuf_release(&symref);
}
if (opts.orphan && !new_branch) {
int n;
const char *s = worktree_basename(path, &n);
new_branch = xstrndup(s, n);
} else if (opts.orphan) {
; /* no-op */
} else if (opts.detach) {
/* Check HEAD */
if (!strcmp(branch, "HEAD"))
can_use_local_refs(&opts);
} else if (ac < 2 && new_branch) {
/* DWIM: Infer --orphan when repo has no refs. */
opts.orphan = dwim_orphan(&opts, !!opt_track, 0);
} else if (ac < 2) {
/* DWIM: Guess branch name from path. */
char *s = dwim_branch(path, &new_branch_to_free);
if (s)
branch = branch_to_free = s;
new_branch = new_branch_to_free;
/* DWIM: Infer --orphan when repo has no refs. */
opts.orphan = (!s) && dwim_orphan(&opts, !!opt_track, 1);
} else if (ac == 2) {
struct object_id oid;
struct commit *commit;
char *remote;
commit = lookup_commit_reference_by_name(branch);
if (!commit) {
remote = unique_tracking_name(branch, &oid, NULL);
if (remote) {
new_branch = branch;
branch = remote;
}
}
if (!strcmp(branch, "HEAD"))
can_use_local_refs(&opts);
}
if (!opts.orphan && !lookup_commit_reference_by_name(branch)) {
int attempt_hint = !opts.quiet && (ac < 2);
if (attempt_hint && used_new_branch_options) {
advise_if_enabled(ADVICE_WORKTREE_ADD_ORPHAN,
WORKTREE_ADD_ORPHAN_WITH_DASH_B_HINT_TEXT,
new_branch, path);
} else if (attempt_hint) {
advise_if_enabled(ADVICE_WORKTREE_ADD_ORPHAN,
WORKTREE_ADD_ORPHAN_NO_DASH_B_HINT_TEXT, path);
}
die(_("invalid reference: %s"), branch);
}
if (!opts.quiet)
print_preparing_worktree_line(opts.detach, branch, new_branch, !!new_branch_force);
if (opts.orphan) {
branch = new_branch;
} else if (new_branch) {
struct child_process cp = CHILD_PROCESS_INIT;
cp.git_cmd = 1;
strvec_push(&cp.args, "branch");
if (new_branch_force)
strvec_push(&cp.args, "--force");
if (opts.quiet)
strvec_push(&cp.args, "--quiet");
strvec_push(&cp.args, new_branch);
strvec_push(&cp.args, branch);
if (opt_track)
strvec_push(&cp.args, opt_track);
if (run_command(&cp))
return -1;
branch = new_branch;
} else if (opt_track) {
die(_("--[no-]track can only be used if a new branch is created"));
}
ret = add_worktree(path, branch, &opts);
free(path);
free(branch_to_free);
free(new_branch_to_free);
return ret;
}
static void show_worktree_porcelain(struct worktree *wt, int line_terminator)
{
const char *reason;
printf("worktree %s%c", wt->path, line_terminator);
if (wt->is_bare)
printf("bare%c", line_terminator);
else {
printf("HEAD %s%c", oid_to_hex(&wt->head_oid), line_terminator);
if (wt->is_detached)
printf("detached%c", line_terminator);
else if (wt->head_ref)
printf("branch %s%c", wt->head_ref, line_terminator);
}
reason = worktree_lock_reason(wt);
if (reason) {
fputs("locked", stdout);
if (*reason) {
fputc(' ', stdout);
write_name_quoted(reason, stdout, line_terminator);
} else {
fputc(line_terminator, stdout);
}
}
reason = worktree_prune_reason(wt, expire);
if (reason)
printf("prunable %s%c", reason, line_terminator);
fputc(line_terminator, stdout);
}
static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
{
struct strbuf sb = STRBUF_INIT;
int cur_path_len = strlen(wt->path);
int path_adj = cur_path_len - utf8_strwidth(wt->path);
const char *reason;
strbuf_addf(&sb, "%-*s ", 1 + path_maxlen + path_adj, wt->path);
if (wt->is_bare)
strbuf_addstr(&sb, "(bare)");
else {
strbuf_addf(&sb, "%-*s ", abbrev_len,
repo_find_unique_abbrev(the_repository, &wt->head_oid, DEFAULT_ABBREV));
if (wt->is_detached)
strbuf_addstr(&sb, "(detached HEAD)");
else if (wt->head_ref) {
char *ref = refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
wt->head_ref,
0);
strbuf_addf(&sb, "[%s]", ref);
free(ref);
} else
strbuf_addstr(&sb, "(error)");
}
reason = worktree_lock_reason(wt);
if (verbose && reason && *reason)
strbuf_addf(&sb, "\n\tlocked: %s", reason);
else if (reason)
strbuf_addstr(&sb, " locked");
reason = worktree_prune_reason(wt, expire);
if (verbose && reason)
strbuf_addf(&sb, "\n\tprunable: %s", reason);
else if (reason)
strbuf_addstr(&sb, " prunable");
printf("%s\n", sb.buf);
strbuf_release(&sb);
}
static void measure_widths(struct worktree **wt, int *abbrev, int *maxlen)
{
int i;
for (i = 0; wt[i]; i++) {
int sha1_len;
int path_len = strlen(wt[i]->path);
if (path_len > *maxlen)
*maxlen = path_len;
sha1_len = strlen(repo_find_unique_abbrev(the_repository, &wt[i]->head_oid, *abbrev));
if (sha1_len > *abbrev)
*abbrev = sha1_len;
}
}
static int pathcmp(const void *a_, const void *b_)
{
const struct worktree *const *a = a_;
const struct worktree *const *b = b_;
return fspathcmp((*a)->path, (*b)->path);
}
static void pathsort(struct worktree **wt)
{
int n = 0;
struct worktree **p = wt;
while (*p++)
n++;
QSORT(wt, n, pathcmp);
}
static int list(int ac, const char **av, const char *prefix)
{
int porcelain = 0;
int line_terminator = '\n';
struct option options[] = {
OPT_BOOL(0, "porcelain", &porcelain, N_("machine-readable output")),
OPT__VERBOSE(&verbose, N_("show extended annotations and reasons, if available")),
OPT_EXPIRY_DATE(0, "expire", &expire,
N_("add 'prunable' annotation to worktrees older than <time>")),
OPT_SET_INT('z', NULL, &line_terminator,
N_("terminate records with a NUL character"), '\0'),
OPT_END()
};
expire = TIME_MAX;
ac = parse_options(ac, av, prefix, options, git_worktree_list_usage, 0);
if (ac)
usage_with_options(git_worktree_list_usage, options);
else if (verbose && porcelain)
die(_("options '%s' and '%s' cannot be used together"), "--verbose", "--porcelain");
else if (!line_terminator && !porcelain)
die(_("the option '%s' requires '%s'"), "-z", "--porcelain");
else {
struct worktree **worktrees = get_worktrees();
int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
/* sort worktrees by path but keep main worktree at top */
pathsort(worktrees + 1);
if (!porcelain)
measure_widths(worktrees, &abbrev, &path_maxlen);
for (i = 0; worktrees[i]; i++) {
if (porcelain)
show_worktree_porcelain(worktrees[i],
line_terminator);
else
show_worktree(worktrees[i], path_maxlen, abbrev);
}
free_worktrees(worktrees);
}
return 0;
}
static int lock_worktree(int ac, const char **av, const char *prefix)
{
const char *reason = "", *old_reason;
struct option options[] = {
OPT_STRING(0, "reason", &reason, N_("string"),
N_("reason for locking")),
OPT_END()
};
struct worktree **worktrees, *wt;
ac = parse_options(ac, av, prefix, options, git_worktree_lock_usage, 0);
if (ac != 1)
usage_with_options(git_worktree_lock_usage, options);
worktrees = get_worktrees();
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("The main working tree cannot be locked or unlocked"));
old_reason = worktree_lock_reason(wt);
if (old_reason) {
if (*old_reason)
die(_("'%s' is already locked, reason: %s"),
av[0], old_reason);
die(_("'%s' is already locked"), av[0]);
}
write_file(git_common_path("worktrees/%s/locked", wt->id),
"%s", reason);
free_worktrees(worktrees);
return 0;
}
static int unlock_worktree(int ac, const char **av, const char *prefix)
{
struct option options[] = {
OPT_END()
};
struct worktree **worktrees, *wt;
int ret;
ac = parse_options(ac, av, prefix, options, git_worktree_unlock_usage, 0);
if (ac != 1)
usage_with_options(git_worktree_unlock_usage, options);
worktrees = get_worktrees();
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("The main working tree cannot be locked or unlocked"));
if (!worktree_lock_reason(wt))
die(_("'%s' is not locked"), av[0]);
ret = unlink_or_warn(git_common_path("worktrees/%s/locked", wt->id));
free_worktrees(worktrees);
return ret;
}
static void validate_no_submodules(const struct worktree *wt)
{
struct index_state istate = INDEX_STATE_INIT(the_repository);
struct strbuf path = STRBUF_INIT;
int i, found_submodules = 0;
if (is_directory(worktree_git_path(wt, "modules"))) {
/*
* There could be false positives, e.g. the "modules"
* directory exists but is empty. But it's a rare case and
* this simpler check is probably good enough for now.
*/
found_submodules = 1;
} else if (read_index_from(&istate, worktree_git_path(wt, "index"),
get_worktree_git_dir(wt)) > 0) {
for (i = 0; i < istate.cache_nr; i++) {
struct cache_entry *ce = istate.cache[i];
int err;
if (!S_ISGITLINK(ce->ce_mode))
continue;
strbuf_reset(&path);
strbuf_addf(&path, "%s/%s", wt->path, ce->name);
if (!is_submodule_populated_gently(path.buf, &err))
continue;
found_submodules = 1;
break;
}
}
discard_index(&istate);
strbuf_release(&path);
if (found_submodules)
die(_("working trees containing submodules cannot be moved or removed"));
}
static int move_worktree(int ac, const char **av, const char *prefix)
{
int force = 0;
struct option options[] = {
OPT__FORCE(&force,
N_("force move even if worktree is dirty or locked"),
PARSE_OPT_NOCOMPLETE),
OPT_END()
};
struct worktree **worktrees, *wt;
struct strbuf dst = STRBUF_INIT;
struct strbuf errmsg = STRBUF_INIT;
const char *reason = NULL;
char *path;
ac = parse_options(ac, av, prefix, options, git_worktree_move_usage,
0);
if (ac != 2)
usage_with_options(git_worktree_move_usage, options);
path = prefix_filename(prefix, av[1]);
strbuf_addstr(&dst, path);
free(path);
worktrees = get_worktrees();
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("'%s' is a main working tree"), av[0]);
if (is_directory(dst.buf)) {
const char *sep = find_last_dir_sep(wt->path);
if (!sep)
die(_("could not figure out destination name from '%s'"),
wt->path);
strbuf_trim_trailing_dir_sep(&dst);
strbuf_addstr(&dst, sep);
}
check_candidate_path(dst.buf, force, worktrees, "move");
validate_no_submodules(wt);
if (force < 2)
reason = worktree_lock_reason(wt);
if (reason) {
if (*reason)
die(_("cannot move a locked working tree, lock reason: %s\nuse 'move -f -f' to override or unlock first"),
reason);
die(_("cannot move a locked working tree;\nuse 'move -f -f' to override or unlock first"));
}
if (validate_worktree(wt, &errmsg, 0))
die(_("validation failed, cannot move working tree: %s"),
errmsg.buf);
strbuf_release(&errmsg);
if (rename(wt->path, dst.buf) == -1)
die_errno(_("failed to move '%s' to '%s'"), wt->path, dst.buf);
update_worktree_location(wt, dst.buf);
strbuf_release(&dst);
free_worktrees(worktrees);
return 0;
}
/*
* Note, "git status --porcelain" is used to determine if it's safe to
* delete a whole worktree. "git status" does not ignore user
* configuration, so if a normal "git status" shows "clean" for the
* user, then it's ok to remove it.
*
* This assumption may be a bad one. We may want to ignore
* (potentially bad) user settings and only delete a worktree when
* it's absolutely safe to do so from _our_ point of view because we
* know better.
*/
static void check_clean_worktree(struct worktree *wt,
const char *original_path)
{
struct child_process cp;
char buf[1];
int ret;
/*
* Until we sort this out, all submodules are "dirty" and
* will abort this function.
*/
validate_no_submodules(wt);
child_process_init(&cp);
strvec_pushf(&cp.env, "%s=%s/.git",
GIT_DIR_ENVIRONMENT, wt->path);
strvec_pushf(&cp.env, "%s=%s",
GIT_WORK_TREE_ENVIRONMENT, wt->path);
strvec_pushl(&cp.args, "status",
"--porcelain", "--ignore-submodules=none",
NULL);
cp.git_cmd = 1;
cp.dir = wt->path;
cp.out = -1;
ret = start_command(&cp);
if (ret)
die_errno(_("failed to run 'git status' on '%s'"),
original_path);
ret = xread(cp.out, buf, sizeof(buf));
if (ret)
die(_("'%s' contains modified or untracked files, use --force to delete it"),
original_path);
close(cp.out);
ret = finish_command(&cp);
if (ret)
die_errno(_("failed to run 'git status' on '%s', code %d"),
original_path, ret);
}
static int delete_git_work_tree(struct worktree *wt)
{
struct strbuf sb = STRBUF_INIT;
int ret = 0;
strbuf_addstr(&sb, wt->path);
if (remove_dir_recursively(&sb, 0)) {
error_errno(_("failed to delete '%s'"), sb.buf);
ret = -1;
}
strbuf_release(&sb);
return ret;
}
static int remove_worktree(int ac, const char **av, const char *prefix)
{
int force = 0;
struct option options[] = {
OPT__FORCE(&force,
N_("force removal even if worktree is dirty or locked"),
PARSE_OPT_NOCOMPLETE),
OPT_END()
};
struct worktree **worktrees, *wt;
struct strbuf errmsg = STRBUF_INIT;
const char *reason = NULL;
int ret = 0;
ac = parse_options(ac, av, prefix, options, git_worktree_remove_usage, 0);
if (ac != 1)
usage_with_options(git_worktree_remove_usage, options);
worktrees = get_worktrees();
wt = find_worktree(worktrees, prefix, av[0]);
if (!wt)
die(_("'%s' is not a working tree"), av[0]);
if (is_main_worktree(wt))
die(_("'%s' is a main working tree"), av[0]);
if (force < 2)
reason = worktree_lock_reason(wt);
if (reason) {
if (*reason)
die(_("cannot remove a locked working tree, lock reason: %s\nuse 'remove -f -f' to override or unlock first"),
reason);
die(_("cannot remove a locked working tree;\nuse 'remove -f -f' to override or unlock first"));
}
if (validate_worktree(wt, &errmsg, WT_VALIDATE_WORKTREE_MISSING_OK))
die(_("validation failed, cannot remove working tree: %s"),
errmsg.buf);
strbuf_release(&errmsg);
if (file_exists(wt->path)) {
if (!force)
check_clean_worktree(wt, av[0]);
ret |= delete_git_work_tree(wt);
}
/*
* continue on even if ret is non-zero, there's no going back
* from here.
*/
ret |= delete_git_dir(wt->id);
delete_worktrees_dir_if_empty();
free_worktrees(worktrees);
return ret;
}
static void report_repair(int iserr, const char *path, const char *msg, void *cb_data)
{
if (!iserr) {
fprintf_ln(stderr, _("repair: %s: %s"), msg, path);
} else {
int *exit_status = (int *)cb_data;
fprintf_ln(stderr, _("error: %s: %s"), msg, path);
*exit_status = 1;
}
}
static int repair(int ac, const char **av, const char *prefix)
{
const char **p;
const char *self[] = { ".", NULL };
struct option options[] = {
OPT_END()
};
int rc = 0;
ac = parse_options(ac, av, prefix, options, git_worktree_repair_usage, 0);
p = ac > 0 ? av : self;
for (; *p; p++)
repair_worktree_at_path(*p, report_repair, &rc);
repair_worktrees(report_repair, &rc);
return rc;
}
int cmd_worktree(int ac, const char **av, const char *prefix)
{
parse_opt_subcommand_fn *fn = NULL;
struct option options[] = {
OPT_SUBCOMMAND("add", &fn, add),
OPT_SUBCOMMAND("prune", &fn, prune),
OPT_SUBCOMMAND("list", &fn, list),
OPT_SUBCOMMAND("lock", &fn, lock_worktree),
OPT_SUBCOMMAND("unlock", &fn, unlock_worktree),
OPT_SUBCOMMAND("move", &fn, move_worktree),
OPT_SUBCOMMAND("remove", &fn, remove_worktree),
OPT_SUBCOMMAND("repair", &fn, repair),
OPT_END()
};
git_config(git_worktree_config, NULL);
if (!prefix)
prefix = "";
ac = parse_options(ac, av, prefix, options, git_worktree_usage, 0);
prepare_repo_settings(the_repository);
the_repository->settings.command_requires_full_index = 0;
return fn(ac, av, prefix);
}