Merge branch 'rs/commit-h-single-parent-cleanup'
[gitweb.git] / builtin / worktree.c
index 96a2834a18be8ee03427cfdd408914ea71d59243..c98e2ce5f57c1f41ccaf90041a1a22233ae75551 100644 (file)
@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "config.h"
 #include "builtin.h"
 #include "dir.h"
 #include "parse-options.h"
 
 static const char * const worktree_usage[] = {
        N_("git worktree add [<options>] <path> [<branch>]"),
-       N_("git worktree prune [<options>]"),
        N_("git worktree list [<options>]"),
+       N_("git worktree lock [<options>] <path>"),
+       N_("git worktree prune [<options>]"),
+       N_("git worktree unlock <path>"),
        NULL
 };
 
@@ -22,13 +25,14 @@ struct add_opts {
        int force;
        int detach;
        int checkout;
+       int keep_locked;
        const char *new_branch;
        int force_new_branch;
 };
 
 static int show_only;
 static int verbose;
-static unsigned long expire;
+static timestamp_t expire;
 
 static int prune_worktree(const char *id, struct strbuf *reason)
 {
@@ -95,7 +99,7 @@ static void prune_worktrees(void)
        if (!dir)
                return;
        while ((d = readdir(dir)) != NULL) {
-               if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+               if (is_dot_or_dotdot(d->d_name))
                        continue;
                strbuf_reset(&reason);
                if (!prune_worktree(d->d_name, &reason))
@@ -104,8 +108,7 @@ static void prune_worktrees(void)
                        printf("%s\n", reason.buf);
                if (show_only)
                        continue;
-               strbuf_reset(&path);
-               strbuf_addstr(&path, git_path("worktrees/%s", d->d_name));
+               git_path_buf(&path, "worktrees/%s", d->d_name);
                ret = remove_dir_recursively(&path, 0);
                if (ret < 0 && errno == ENOTDIR)
                        ret = unlink(path.buf);
@@ -123,13 +126,13 @@ 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 objects")),
+               OPT__VERBOSE(&verbose, N_("report pruned working trees")),
                OPT_EXPIRY_DATE(0, "expire", &expire,
-                               N_("expire objects older than <time>")),
+                               N_("expire working trees older than <time>")),
                OPT_END()
        };
 
-       expire = ULONG_MAX;
+       expire = TIME_MAX;
        ac = parse_options(ac, av, prefix, options, worktree_usage, 0);
        if (ac)
                usage_with_options(worktree_usage, options);
@@ -192,7 +195,7 @@ static int add_worktree(const char *path, const char *refname,
        struct strbuf sb = STRBUF_INIT;
        const char *name;
        struct stat st;
-       struct child_process cp;
+       struct child_process cp = CHILD_PROCESS_INIT;
        struct argv_array child_env = ARGV_ARRAY_INIT;
        int counter = 0, len, ret;
        struct strbuf symref = STRBUF_INIT;
@@ -213,8 +216,7 @@ static int add_worktree(const char *path, const char *refname,
        }
 
        name = worktree_basename(path, &len);
-       strbuf_addstr(&sb_repo,
-                     git_path("worktrees/%.*s", (int)(path + len - name), name));
+       git_path_buf(&sb_repo, "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'"),
@@ -240,7 +242,10 @@ static int add_worktree(const char *path, const char *refname,
         * after the preparation is over.
         */
        strbuf_addf(&sb, "%s/locked", sb_repo.buf);
-       write_file(sb.buf, "initializing");
+       if (!opts->keep_locked)
+               write_file(sb.buf, "initializing");
+       else
+               write_file(sb.buf, "added with --lock");
 
        strbuf_addf(&sb_git, "%s/.git", path);
        if (safe_create_leading_directories_const(sb_git.buf))
@@ -262,7 +267,7 @@ static int add_worktree(const char *path, const char *refname,
         */
        strbuf_reset(&sb);
        strbuf_addf(&sb, "%s/HEAD", sb_repo.buf);
-       write_file(sb.buf, "0000000000000000000000000000000000000000");
+       write_file(sb.buf, "%s", sha1_to_hex(null_sha1));
        strbuf_reset(&sb);
        strbuf_addf(&sb, "%s/commondir", sb_repo.buf);
        write_file(sb.buf, "../..");
@@ -271,7 +276,6 @@ static int add_worktree(const char *path, const char *refname,
 
        argv_array_pushf(&child_env, "%s=%s", GIT_DIR_ENVIRONMENT, sb_git.buf);
        argv_array_pushf(&child_env, "%s=%s", GIT_WORK_TREE_ENVIRONMENT, path);
-       memset(&cp, 0, sizeof(cp));
        cp.git_cmd = 1;
 
        if (commit)
@@ -296,15 +300,15 @@ static int add_worktree(const char *path, const char *refname,
        }
 
        is_junk = 0;
-       free(junk_work_tree);
-       free(junk_git_dir);
-       junk_work_tree = NULL;
-       junk_git_dir = NULL;
+       FREE_AND_NULL(junk_work_tree);
+       FREE_AND_NULL(junk_git_dir);
 
 done:
-       strbuf_reset(&sb);
-       strbuf_addf(&sb, "%s/locked", sb_repo.buf);
-       unlink_or_warn(sb.buf);
+       if (ret || !opts->keep_locked) {
+               strbuf_reset(&sb);
+               strbuf_addf(&sb, "%s/locked", sb_repo.buf);
+               unlink_or_warn(sb.buf);
+       }
        argv_array_clear(&child_env);
        strbuf_release(&sb);
        strbuf_release(&symref);
@@ -317,7 +321,8 @@ static int add(int ac, const char **av, const char *prefix)
 {
        struct add_opts opts;
        const char *new_branch_force = NULL;
-       const char *path, *branch;
+       char *path;
+       const char *branch;
        struct option options[] = {
                OPT__FORCE(&opts.force, N_("checkout <branch> even if already checked out in other worktree")),
                OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
@@ -326,6 +331,7 @@ static int add(int ac, const char **av, const char *prefix)
                           N_("create or reset a branch")),
                OPT_BOOL(0, "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", &opts.keep_locked, N_("keep the new working tree locked")),
                OPT_END()
        };
 
@@ -337,9 +343,12 @@ static int add(int ac, const char **av, const char *prefix)
        if (ac < 1 || ac > 2)
                usage_with_options(worktree_usage, options);
 
-       path = prefix ? prefix_filename(prefix, strlen(prefix), av[0]) : av[0];
+       path = prefix_filename(prefix, av[0]);
        branch = ac < 2 ? "HEAD" : av[1];
 
+       if (!strcmp(branch, "-"))
+               branch = "@{-1}";
+
        opts.force_new_branch = !!new_branch_force;
        if (opts.force_new_branch) {
                struct strbuf symref = STRBUF_INIT;
@@ -360,8 +369,7 @@ static int add(int ac, const char **av, const char *prefix)
        }
 
        if (opts.new_branch) {
-               struct child_process cp;
-               memset(&cp, 0, sizeof(cp));
+               struct child_process cp = CHILD_PROCESS_INIT;
                cp.git_cmd = 1;
                argv_array_push(&cp.args, "branch");
                if (opts.force_new_branch)
@@ -385,7 +393,7 @@ static void show_worktree_porcelain(struct worktree *wt)
                printf("HEAD %s\n", sha1_to_hex(wt->head_sha1));
                if (wt->is_detached)
                        printf("detached\n");
-               else
+               else if (wt->head_ref)
                        printf("branch %s\n", wt->head_ref);
        }
        printf("\n");
@@ -403,10 +411,14 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
        else {
                strbuf_addf(&sb, "%-*s ", abbrev_len,
                                find_unique_abbrev(wt->head_sha1, DEFAULT_ABBREV));
-               if (!wt->is_detached)
-                       strbuf_addf(&sb, "[%s]", shorten_unambiguous_ref(wt->head_ref, 0));
-               else
+               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);
 
@@ -442,7 +454,7 @@ static int list(int ac, const char **av, const char *prefix)
        if (ac)
                usage_with_options(worktree_usage, options);
        else {
-               struct worktree **worktrees = get_worktrees();
+               struct worktree **worktrees = get_worktrees(GWT_SORT_LINKED);
                int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
 
                if (!porcelain)
@@ -459,19 +471,87 @@ static int list(int ac, const char **av, const char *prefix)
        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_default_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);
 }