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![Junio C Hamano](/assets/img/avatar_default.png)
"git worktree add" learned to run the post-checkout hook, just like "git clone" runs it upon the initial checkout. * es/worktree-add-post-checkout-hook: worktree: add: fix 'post-checkout' not knowing new worktree location
646 lines
16 KiB
C
646 lines
16 KiB
C
#include "cache.h"
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#include "checkout.h"
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#include "config.h"
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#include "builtin.h"
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#include "dir.h"
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#include "parse-options.h"
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#include "argv-array.h"
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#include "branch.h"
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#include "refs.h"
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#include "run-command.h"
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#include "sigchain.h"
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#include "refs.h"
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#include "utf8.h"
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#include "worktree.h"
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static const char * const worktree_usage[] = {
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N_("git worktree add [<options>] <path> [<commit-ish>]"),
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N_("git worktree list [<options>]"),
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N_("git worktree lock [<options>] <path>"),
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N_("git worktree prune [<options>]"),
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N_("git worktree unlock <path>"),
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NULL
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};
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struct add_opts {
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int force;
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int detach;
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int checkout;
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int keep_locked;
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const char *new_branch;
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int force_new_branch;
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};
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static int show_only;
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static int verbose;
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static int guess_remote;
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static timestamp_t expire;
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static int git_worktree_config(const char *var, const char *value, void *cb)
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{
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if (!strcmp(var, "worktree.guessremote")) {
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guess_remote = git_config_bool(var, value);
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return 0;
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}
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return git_default_config(var, value, cb);
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}
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static int prune_worktree(const char *id, struct strbuf *reason)
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{
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struct stat st;
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char *path;
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int fd;
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size_t len;
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ssize_t read_result;
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if (!is_directory(git_path("worktrees/%s", id))) {
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strbuf_addf(reason, _("Removing worktrees/%s: not a valid directory"), id);
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return 1;
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}
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if (file_exists(git_path("worktrees/%s/locked", id)))
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return 0;
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if (stat(git_path("worktrees/%s/gitdir", id), &st)) {
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strbuf_addf(reason, _("Removing worktrees/%s: gitdir file does not exist"), id);
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return 1;
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}
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fd = open(git_path("worktrees/%s/gitdir", id), O_RDONLY);
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if (fd < 0) {
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strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"),
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id, strerror(errno));
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return 1;
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}
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len = xsize_t(st.st_size);
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path = xmallocz(len);
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read_result = read_in_full(fd, path, len);
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if (read_result < 0) {
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strbuf_addf(reason, _("Removing worktrees/%s: unable to read gitdir file (%s)"),
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id, strerror(errno));
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close(fd);
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free(path);
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return 1;
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}
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close(fd);
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if (read_result != len) {
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strbuf_addf(reason,
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_("Removing worktrees/%s: short read (expected %"PRIuMAX" bytes, read %"PRIuMAX")"),
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id, (uintmax_t)len, (uintmax_t)read_result);
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free(path);
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return 1;
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}
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while (len && (path[len - 1] == '\n' || path[len - 1] == '\r'))
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len--;
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if (!len) {
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strbuf_addf(reason, _("Removing worktrees/%s: invalid gitdir file"), id);
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free(path);
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return 1;
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}
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path[len] = '\0';
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if (!file_exists(path)) {
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struct stat st_link;
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free(path);
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/*
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* the repo is moved manually and has not been
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* accessed since?
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*/
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if (!stat(git_path("worktrees/%s/link", id), &st_link) &&
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st_link.st_nlink > 1)
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return 0;
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if (st.st_mtime <= expire) {
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strbuf_addf(reason, _("Removing worktrees/%s: gitdir file points to non-existent location"), id);
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return 1;
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} else {
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return 0;
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}
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}
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free(path);
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return 0;
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}
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static void prune_worktrees(void)
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{
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struct strbuf reason = STRBUF_INIT;
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struct strbuf path = STRBUF_INIT;
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DIR *dir = opendir(git_path("worktrees"));
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struct dirent *d;
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int ret;
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if (!dir)
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return;
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while ((d = readdir(dir)) != NULL) {
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if (is_dot_or_dotdot(d->d_name))
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continue;
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strbuf_reset(&reason);
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if (!prune_worktree(d->d_name, &reason))
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continue;
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if (show_only || verbose)
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printf("%s\n", reason.buf);
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if (show_only)
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continue;
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git_path_buf(&path, "worktrees/%s", d->d_name);
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ret = remove_dir_recursively(&path, 0);
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if (ret < 0 && errno == ENOTDIR)
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ret = unlink(path.buf);
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if (ret)
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error_errno(_("failed to remove '%s'"), path.buf);
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}
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closedir(dir);
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if (!show_only)
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rmdir(git_path("worktrees"));
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strbuf_release(&reason);
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strbuf_release(&path);
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}
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static int prune(int ac, const char **av, const char *prefix)
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{
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struct option options[] = {
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OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
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OPT__VERBOSE(&verbose, N_("report pruned working trees")),
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OPT_EXPIRY_DATE(0, "expire", &expire,
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N_("expire working trees older than <time>")),
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OPT_END()
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};
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expire = TIME_MAX;
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ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
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if (ac)
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usage_with_options(worktree_usage, options);
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prune_worktrees();
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return 0;
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}
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static char *junk_work_tree;
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static char *junk_git_dir;
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static int is_junk;
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static pid_t junk_pid;
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static void remove_junk(void)
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{
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struct strbuf sb = STRBUF_INIT;
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if (!is_junk || getpid() != junk_pid)
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return;
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if (junk_git_dir) {
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strbuf_addstr(&sb, junk_git_dir);
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remove_dir_recursively(&sb, 0);
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strbuf_reset(&sb);
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}
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if (junk_work_tree) {
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strbuf_addstr(&sb, junk_work_tree);
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remove_dir_recursively(&sb, 0);
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}
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strbuf_release(&sb);
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}
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static void remove_junk_on_signal(int signo)
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{
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remove_junk();
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sigchain_pop(signo);
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raise(signo);
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}
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static const char *worktree_basename(const char *path, int *olen)
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{
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const char *name;
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int len;
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len = strlen(path);
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while (len && is_dir_sep(path[len - 1]))
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len--;
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for (name = path + len - 1; name > path; name--)
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if (is_dir_sep(*name)) {
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name++;
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break;
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}
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*olen = len;
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return name;
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}
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static int add_worktree(const char *path, const char *refname,
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const struct add_opts *opts)
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{
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struct strbuf sb_git = STRBUF_INIT, sb_repo = STRBUF_INIT;
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struct strbuf sb = STRBUF_INIT;
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const char *name;
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struct stat st;
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struct child_process cp = CHILD_PROCESS_INIT;
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struct argv_array child_env = ARGV_ARRAY_INIT;
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int counter = 0, len, ret;
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struct strbuf symref = STRBUF_INIT;
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struct commit *commit = NULL;
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int is_branch = 0;
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if (file_exists(path) && !is_empty_dir(path))
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die(_("'%s' already exists"), path);
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/* is 'refname' a branch or commit? */
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if (!opts->detach && !strbuf_check_branch_ref(&symref, refname) &&
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ref_exists(symref.buf)) {
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is_branch = 1;
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if (!opts->force)
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die_if_checked_out(symref.buf, 0);
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}
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commit = lookup_commit_reference_by_name(refname);
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if (!commit)
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die(_("invalid reference: %s"), refname);
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name = worktree_basename(path, &len);
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git_path_buf(&sb_repo, "worktrees/%.*s", (int)(path + len - name), name);
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len = sb_repo.len;
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if (safe_create_leading_directories_const(sb_repo.buf))
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die_errno(_("could not create leading directories of '%s'"),
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sb_repo.buf);
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while (!stat(sb_repo.buf, &st)) {
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counter++;
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strbuf_setlen(&sb_repo, len);
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strbuf_addf(&sb_repo, "%d", counter);
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}
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name = strrchr(sb_repo.buf, '/') + 1;
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junk_pid = getpid();
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atexit(remove_junk);
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sigchain_push_common(remove_junk_on_signal);
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if (mkdir(sb_repo.buf, 0777))
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die_errno(_("could not create directory of '%s'"), sb_repo.buf);
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junk_git_dir = xstrdup(sb_repo.buf);
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is_junk = 1;
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/*
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* lock the incomplete repo so prune won't delete it, unlock
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* after the preparation is over.
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*/
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strbuf_addf(&sb, "%s/locked", sb_repo.buf);
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if (!opts->keep_locked)
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write_file(sb.buf, "initializing");
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else
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write_file(sb.buf, "added with --lock");
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strbuf_addf(&sb_git, "%s/.git", path);
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if (safe_create_leading_directories_const(sb_git.buf))
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die_errno(_("could not create leading directories of '%s'"),
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sb_git.buf);
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junk_work_tree = xstrdup(path);
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strbuf_reset(&sb);
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strbuf_addf(&sb, "%s/gitdir", sb_repo.buf);
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write_file(sb.buf, "%s", real_path(sb_git.buf));
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write_file(sb_git.buf, "gitdir: %s/worktrees/%s",
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real_path(get_git_common_dir()), name);
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/*
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* This is to keep resolve_ref() happy. We need a valid HEAD
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* or is_git_directory() will reject the directory. Any value which
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* looks like an object ID will do since it will be immediately
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* replaced by the symbolic-ref or update-ref invocation in the new
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* worktree.
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*/
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strbuf_reset(&sb);
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strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
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write_file(sb.buf, "%s", sha1_to_hex(null_sha1));
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strbuf_reset(&sb);
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strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
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write_file(sb.buf, "../..");
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fprintf_ln(stderr, _("Preparing %s (identifier %s)"), path, name);
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argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
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argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
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cp.git_cmd = 1;
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if (!is_branch)
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argv_array_pushl(&cp.args, "update-ref", "HEAD",
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oid_to_hex(&commit->object.oid), NULL);
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else
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argv_array_pushl(&cp.args, "symbolic-ref", "HEAD",
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symref.buf, NULL);
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cp.env = child_env.argv;
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ret = run_command(&cp);
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if (ret)
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goto done;
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if (opts->checkout) {
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cp.argv = NULL;
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argv_array_clear(&cp.args);
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argv_array_pushl(&cp.args, "reset", "--hard", NULL);
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cp.env = child_env.argv;
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ret = run_command(&cp);
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if (ret)
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goto done;
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}
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is_junk = 0;
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FREE_AND_NULL(junk_work_tree);
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FREE_AND_NULL(junk_git_dir);
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done:
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if (ret || !opts->keep_locked) {
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strbuf_reset(&sb);
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strbuf_addf(&sb, "%s/locked", sb_repo.buf);
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unlink_or_warn(sb.buf);
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}
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/*
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* Hook failure does not warrant worktree deletion, so run hook after
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* is_junk is cleared, but do return appropriate code when hook fails.
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*/
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if (!ret && opts->checkout) {
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const char *hook = find_hook("post-checkout");
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if (hook) {
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const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
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cp.git_cmd = 0;
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cp.no_stdin = 1;
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cp.stdout_to_stderr = 1;
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cp.dir = path;
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cp.env = env;
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cp.argv = NULL;
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argv_array_pushl(&cp.args, absolute_path(hook),
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oid_to_hex(&null_oid),
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oid_to_hex(&commit->object.oid),
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"1", NULL);
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ret = run_command(&cp);
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}
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}
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argv_array_clear(&child_env);
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strbuf_release(&sb);
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strbuf_release(&symref);
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strbuf_release(&sb_repo);
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strbuf_release(&sb_git);
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return ret;
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}
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static int add(int ac, const char **av, const char *prefix)
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{
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struct add_opts opts;
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const char *new_branch_force = NULL;
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char *path;
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const char *branch;
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const char *opt_track = NULL;
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struct option options[] = {
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OPT__FORCE(&opts.force, N_("checkout <branch> even if already checked out in other worktree")),
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OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
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N_("create a new branch")),
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OPT_STRING('B', NULL, &new_branch_force, N_("branch"),
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N_("create or reset a branch")),
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OPT_BOOL(0, "detach", &opts.detach, N_("detach HEAD at named commit")),
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OPT_BOOL(0, "checkout", &opts.checkout, N_("populate the new working tree")),
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OPT_BOOL(0, "lock", &opts.keep_locked, N_("keep the new working tree locked")),
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OPT_PASSTHRU(0, "track", &opt_track, NULL,
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N_("set up tracking mode (see git-branch(1))"),
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PARSE_OPT_NOARG | PARSE_OPT_OPTARG),
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OPT_BOOL(0, "guess-remote", &guess_remote,
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N_("try to match the new branch name with a remote-tracking branch")),
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OPT_END()
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};
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memset(&opts, 0, sizeof(opts));
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opts.checkout = 1;
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ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
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if (!!opts.detach + !!opts.new_branch + !!new_branch_force > 1)
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die(_("-b, -B, and --detach are mutually exclusive"));
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if (ac < 1 || ac > 2)
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usage_with_options(worktree_usage, options);
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path = prefix_filename(prefix, av[0]);
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branch = ac < 2 ? "HEAD" : av[1];
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if (!strcmp(branch, "-"))
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branch = "@{-1}";
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opts.force_new_branch = !!new_branch_force;
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if (opts.force_new_branch) {
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struct strbuf symref = STRBUF_INIT;
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opts.new_branch = new_branch_force;
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if (!opts.force &&
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!strbuf_check_branch_ref(&symref, opts.new_branch) &&
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ref_exists(symref.buf))
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die_if_checked_out(symref.buf, 0);
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strbuf_release(&symref);
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}
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if (ac < 2 && !opts.new_branch && !opts.detach) {
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int n;
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const char *s = worktree_basename(path, &n);
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opts.new_branch = xstrndup(s, n);
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if (guess_remote) {
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struct object_id oid;
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const char *remote =
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unique_tracking_name(opts.new_branch, &oid);
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if (remote)
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branch = remote;
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}
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}
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if (ac == 2 && !opts.new_branch && !opts.detach) {
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struct object_id oid;
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struct commit *commit;
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const char *remote;
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commit = lookup_commit_reference_by_name(branch);
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if (!commit) {
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remote = unique_tracking_name(branch, &oid);
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if (remote) {
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opts.new_branch = branch;
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branch = remote;
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}
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}
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}
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if (opts.new_branch) {
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struct child_process cp = CHILD_PROCESS_INIT;
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cp.git_cmd = 1;
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argv_array_push(&cp.args, "branch");
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if (opts.force_new_branch)
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argv_array_push(&cp.args, "--force");
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argv_array_push(&cp.args, opts.new_branch);
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argv_array_push(&cp.args, branch);
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if (opt_track)
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argv_array_push(&cp.args, opt_track);
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if (run_command(&cp))
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return -1;
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branch = opts.new_branch;
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} else if (opt_track) {
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die(_("--[no-]track can only be used if a new branch is created"));
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}
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UNLEAK(path);
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UNLEAK(opts);
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return add_worktree(path, branch, &opts);
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}
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static void show_worktree_porcelain(struct worktree *wt)
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{
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printf("worktree %s\n", wt->path);
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if (wt->is_bare)
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printf("bare\n");
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else {
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printf("HEAD %s\n", oid_to_hex(&wt->head_oid));
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if (wt->is_detached)
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printf("detached\n");
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else if (wt->head_ref)
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printf("branch %s\n", wt->head_ref);
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}
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printf("\n");
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}
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static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
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{
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struct strbuf sb = STRBUF_INIT;
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int cur_path_len = strlen(wt->path);
|
|
int path_adj = cur_path_len - utf8_strwidth(wt->path);
|
|
|
|
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,
|
|
find_unique_abbrev(wt->head_oid.hash, DEFAULT_ABBREV));
|
|
if (wt->is_detached)
|
|
strbuf_addstr(&sb, "(detached HEAD)");
|
|
else if (wt->head_ref) {
|
|
char *ref = shorten_unambiguous_ref(wt->head_ref, 0);
|
|
strbuf_addf(&sb, "[%s]", ref);
|
|
free(ref);
|
|
} else
|
|
strbuf_addstr(&sb, "(error)");
|
|
}
|
|
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(find_unique_abbrev(wt[i]->head_oid.hash, *abbrev));
|
|
if (sha1_len > *abbrev)
|
|
*abbrev = sha1_len;
|
|
}
|
|
}
|
|
|
|
static int list(int ac, const char **av, const char *prefix)
|
|
{
|
|
int porcelain = 0;
|
|
|
|
struct option options[] = {
|
|
OPT_BOOL(0, "porcelain", &porcelain, N_("machine-readable output")),
|
|
OPT_END()
|
|
};
|
|
|
|
ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
|
|
if (ac)
|
|
usage_with_options(worktree_usage, options);
|
|
else {
|
|
struct worktree **worktrees = get_worktrees(GWT_SORT_LINKED);
|
|
int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
|
|
|
|
if (!porcelain)
|
|
measure_widths(worktrees, &abbrev, &path_maxlen);
|
|
|
|
for (i = 0; worktrees[i]; i++) {
|
|
if (porcelain)
|
|
show_worktree_porcelain(worktrees[i]);
|
|
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, worktree_usage, 0);
|
|
if (ac != 1)
|
|
usage_with_options(worktree_usage, options);
|
|
|
|
worktrees = get_worktrees(0);
|
|
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 = is_worktree_locked(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, worktree_usage, 0);
|
|
if (ac != 1)
|
|
usage_with_options(worktree_usage, options);
|
|
|
|
worktrees = get_worktrees(0);
|
|
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 (!is_worktree_locked(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;
|
|
}
|
|
|
|
int cmd_worktree(int ac, const char **av, const char *prefix)
|
|
{
|
|
struct option options[] = {
|
|
OPT_END()
|
|
};
|
|
|
|
git_config(git_worktree_config, NULL);
|
|
|
|
if (ac < 2)
|
|
usage_with_options(worktree_usage, options);
|
|
if (!prefix)
|
|
prefix = "";
|
|
if (!strcmp(av[1], "add"))
|
|
return add(ac - 1, av + 1, prefix);
|
|
if (!strcmp(av[1], "prune"))
|
|
return prune(ac - 1, av + 1, prefix);
|
|
if (!strcmp(av[1], "list"))
|
|
return list(ac - 1, av + 1, prefix);
|
|
if (!strcmp(av[1], "lock"))
|
|
return lock_worktree(ac - 1, av + 1, prefix);
|
|
if (!strcmp(av[1], "unlock"))
|
|
return unlock_worktree(ac - 1, av + 1, prefix);
|
|
usage_with_options(worktree_usage, options);
|
|
}
|