-#include "cache.h"
#include "builtin.h"
+#include "lockfile.h"
#include "parse-options.h"
#include "refs.h"
#include "commit.h"
const char *prefix;
struct pathspec pathspec;
struct tree *source_tree;
+
+ const char *new_worktree;
+ const char **saved_argv;
+ int new_worktree_mode;
};
static int post_checkout_hook(struct commit *old, struct commit *new,
die(_("Cannot update paths and switch to branch '%s' at the same time."),
opts->new_branch);
+ if (opts->new_worktree)
+ die(_("'%s' cannot be used with updating paths"), "--to");
+
if (opts->patch_mode)
return run_add_interactive(revision, "--patch=checkout",
&opts->pathspec);
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
- read_ref_full("HEAD", rev, 0, &flag);
+ read_ref_full("HEAD", 0, rev, &flag);
head = lookup_commit_reference_gently(rev, 1);
errs |= post_checkout_hook(head, head, 0);
topts.dir->flags |= DIR_SHOW_IGNORED;
setup_standard_excludes(topts.dir);
}
- tree = parse_tree_indirect(old->commit ?
+ tree = parse_tree_indirect(old->commit && !opts->new_worktree_mode ?
old->commit->object.sha1 :
EMPTY_TREE_SHA1_BIN);
init_tree_desc(&trees[0], tree->buffer, tree->size);
}
}
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+
+ if (!cache_tree_fully_valid(active_cache_tree))
+ cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
+
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
if (opts->new_orphan_branch) {
if (opts->new_branch_log && !log_all_ref_updates) {
int temp;
- char log_file[PATH_MAX];
- char *ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch);
+ struct strbuf log_file = STRBUF_INIT;
+ int ret;
+ const char *ref_name;
+ ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch);
temp = log_all_ref_updates;
log_all_ref_updates = 1;
- if (log_ref_setup(ref_name, log_file, sizeof(log_file))) {
+ ret = log_ref_setup(ref_name, &log_file);
+ log_all_ref_updates = temp;
+ strbuf_release(&log_file);
+ if (ret) {
fprintf(stderr, _("Can not do reflog for '%s'\n"),
opts->new_orphan_branch);
- log_all_ref_updates = temp;
return;
}
- log_all_ref_updates = temp;
}
}
else
unsigned char rev[20];
int flag, writeout_error = 0;
memset(&old, 0, sizeof(old));
- old.path = path_to_free = resolve_refdup("HEAD", rev, 0, &flag);
+ old.path = path_to_free = resolve_refdup("HEAD", 0, rev, &flag);
old.commit = lookup_commit_reference_gently(rev, 1);
if (!(flag & REF_ISSYMREF))
old.path = NULL;
return ret;
}
- if (!opts->quiet && !old.path && old.commit && new->commit != old.commit)
+ if (!opts->quiet && !old.path && old.commit &&
+ new->commit != old.commit && !opts->new_worktree_mode)
orphaned_commit_warning(old.commit, new->commit);
update_refs_for_switch(opts, &old, new);
return ret || writeout_error;
}
+static int prepare_linked_checkout(const struct checkout_opts *opts,
+ struct branch_info *new)
+{
+ struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
+ struct strbuf sb = STRBUF_INIT;
+ const char *path = opts->new_worktree, *name;
+ struct stat st;
+ struct child_process cp;
+ int counter = 0, len;
+
+ if (!new->commit)
+ die(_("no branch specified"));
+ if (file_exists(path))
+ die(_("'%s' already exists"), path);
+
+ 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;
+ }
+ strbuf_addstr(&sb_repo,
+ git_path("worktrees/%.*s", (int)(path + len - name), 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 (!stat(sb_repo.buf, &st)) {
+ counter++;
+ strbuf_setlen(&sb_repo, len);
+ strbuf_addf(&sb_repo, "%d", counter);
+ }
+ name = strrchr(sb_repo.buf, '/') + 1;
+ if (mkdir(sb_repo.buf, 0777))
+ die_errno(_("could not create directory of '%s'"), sb_repo.buf);
+
+ 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);
+
+ write_file(sb_git.buf, 1, "gitdir: %s/worktrees/%s\n",
+ real_path(get_git_common_dir()), name);
+ /*
+ * This is to keep resolve_ref() happy. We need a valid HEAD
+ * or is_git_directory() will reject the directory. Any valid
+ * value would do because this value will be ignored and
+ * replaced at the next (real) checkout.
+ */
+ strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
+ write_file(sb.buf, 1, "%s\n", sha1_to_hex(new->commit->object.sha1));
+ strbuf_reset(&sb);
+ strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
+ write_file(sb.buf, 1, "../..\n");
+
+ if (!opts->quiet)
+ fprintf_ln(stderr, _("Enter %s (identifier %s)"), path, name);
+
+ setenv("GIT_CHECKOUT_NEW_WORKTREE", "1", 1);
+ setenv(GIT_DIR_ENVIRONMENT, sb_git.buf, 1);
+ setenv(GIT_WORK_TREE_ENVIRONMENT, path, 1);
+ memset(&cp, 0, sizeof(cp));
+ cp.git_cmd = 1;
+ cp.argv = opts->saved_argv;
+ return run_command(&cp);
+}
+
static int git_checkout_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "diff.ignoresubmodules")) {
die(_("Cannot switch branch to a non-commit '%s'"),
new->name);
+ if (opts->new_worktree)
+ return prepare_linked_checkout(opts, new);
+
if (!new->commit && opts->new_branch) {
unsigned char rev[20];
int flag;
- if (!read_ref_full("HEAD", rev, 0, &flag) &&
+ if (!read_ref_full("HEAD", 0, rev, &flag) &&
(flag & REF_ISSYMREF) && is_null_sha1(rev))
return switch_unborn_to_new_branch(opts);
}
N_("do not limit pathspecs to sparse entries only")),
OPT_HIDDEN_BOOL(0, "guess", &dwim_new_local_branch,
N_("second guess 'git checkout no-such-branch'")),
+ OPT_FILENAME(0, "to", &opts.new_worktree,
+ N_("check a branch out in a separate working directory")),
OPT_END(),
};
opts.overwrite_ignore = 1;
opts.prefix = prefix;
+ opts.saved_argv = xmalloc(sizeof(const char *) * (argc + 2));
+ memcpy(opts.saved_argv, argv, sizeof(const char *) * (argc + 1));
+
gitmodules_config();
git_config(git_checkout_config, &opts);
argc = parse_options(argc, argv, prefix, options, checkout_usage,
PARSE_OPT_KEEP_DASHDASH);
+ /* recursive execution from checkout_new_worktree() */
+ opts.new_worktree_mode = getenv("GIT_CHECKOUT_NEW_WORKTREE") != NULL;
+ if (opts.new_worktree_mode)
+ opts.new_worktree = NULL;
+
if (conflict_style) {
opts.merge = 1; /* implied */
git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
const char *argv0 = argv[0];
if (!argc || !strcmp(argv0, "--"))
die (_("--track needs a branch name"));
- if (starts_with(argv0, "refs/"))
- argv0 += 5;
- if (starts_with(argv0, "remotes/"))
- argv0 += 8;
+ skip_prefix(argv0, "refs/", &argv0);
+ skip_prefix(argv0, "remotes/", &argv0);
argv0 = strchr(argv0, '/');
if (!argv0 || !argv0[1])
die (_("Missing branch name; try -b"));