Merge branch 'da/mergetool-diff-order'
[gitweb.git] / builtin / clone.c
index 29b18329ee449f0b195dff8e06367b8b7db377a3..6c76a6ed66fef567ca06e3e864b37fc3bed151d5 100644 (file)
@@ -40,17 +40,22 @@ static const char * const builtin_clone_usage[] = {
 
 static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
 static int option_local = -1, option_no_hardlinks, option_shared, option_recursive;
-static char *option_template, *option_depth;
+static int option_shallow_submodules;
+static int deepen;
+static char *option_template, *option_depth, *option_since;
 static char *option_origin = NULL;
 static char *option_branch = NULL;
+static struct string_list option_not = STRING_LIST_INIT_NODUP;
 static const char *real_git_dir;
 static char *option_upload_pack = "git-upload-pack";
 static int option_verbosity;
 static int option_progress = -1;
 static enum transport_family family;
-static struct string_list option_config;
-static struct string_list option_reference;
+static struct string_list option_config = STRING_LIST_INIT_NODUP;
+static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
+static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
 static int option_dissociate;
+static int max_jobs = -1;
 
 static struct option builtin_clone_options[] = {
        OPT__VERBOSITY(&option_verbosity),
@@ -73,10 +78,14 @@ static struct option builtin_clone_options[] = {
                    N_("initialize submodules in the clone")),
        OPT_BOOL(0, "recurse-submodules", &option_recursive,
                    N_("initialize submodules in the clone")),
+       OPT_INTEGER('j', "jobs", &max_jobs,
+                   N_("number of submodules cloned in parallel")),
        OPT_STRING(0, "template", &option_template, N_("template-directory"),
                   N_("directory from which templates will be used")),
-       OPT_STRING_LIST(0, "reference", &option_reference, N_("repo"),
+       OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
                        N_("reference repository")),
+       OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
+                       N_("repo"), N_("reference repository")),
        OPT_BOOL(0, "dissociate", &option_dissociate,
                 N_("use --reference only while cloning")),
        OPT_STRING('o', "origin", &option_origin, N_("name"),
@@ -87,8 +96,14 @@ static struct option builtin_clone_options[] = {
                   N_("path to git-upload-pack on the remote")),
        OPT_STRING(0, "depth", &option_depth, N_("depth"),
                    N_("create a shallow clone of that depth")),
+       OPT_STRING(0, "shallow-since", &option_since, N_("time"),
+                   N_("create a shallow clone since a specific time")),
+       OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
+                       N_("deepen history of shallow clone by excluding rev")),
        OPT_BOOL(0, "single-branch", &option_single_branch,
                    N_("clone only one branch, HEAD or --branch")),
+       OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
+                   N_("any cloned submodules will be shallow")),
        OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
                   N_("separate git dir from working tree")),
        OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
@@ -100,10 +115,6 @@ static struct option builtin_clone_options[] = {
        OPT_END()
 };
 
-static const char *argv_submodule[] = {
-       "submodule", "update", "--init", "--recursive", NULL
-};
-
 static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
 {
        static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
@@ -280,50 +291,37 @@ static void strip_trailing_slashes(char *dir)
 
 static int add_one_reference(struct string_list_item *item, void *cb_data)
 {
-       char *ref_git;
-       const char *repo;
-       struct strbuf alternate = STRBUF_INIT;
-
-       /* Beware: read_gitfile(), real_path() and mkpath() return static buffer */
-       ref_git = xstrdup(real_path(item->string));
-
-       repo = read_gitfile(ref_git);
-       if (!repo)
-               repo = read_gitfile(mkpath("%s/.git", ref_git));
-       if (repo) {
-               free(ref_git);
-               ref_git = xstrdup(repo);
-       }
+       struct strbuf err = STRBUF_INIT;
+       int *required = cb_data;
+       char *ref_git = compute_alternate_path(item->string, &err);
 
-       if (!repo && is_directory(mkpath("%s/.git/objects", ref_git))) {
-               char *ref_git_git = mkpathdup("%s/.git", ref_git);
-               free(ref_git);
-               ref_git = ref_git_git;
-       } else if (!is_directory(mkpath("%s/objects", ref_git))) {
+       if (!ref_git) {
+               if (*required)
+                       die("%s", err.buf);
+               else
+                       fprintf(stderr,
+                               _("info: Could not add alternate for '%s': %s\n"),
+                               item->string, err.buf);
+       } else {
                struct strbuf sb = STRBUF_INIT;
-               if (get_common_dir(&sb, ref_git))
-                       die(_("reference repository '%s' as a linked checkout is not supported yet."),
-                           item->string);
-               die(_("reference repository '%s' is not a local repository."),
-                   item->string);
+               strbuf_addf(&sb, "%s/objects", ref_git);
+               add_to_alternates_file(sb.buf);
+               strbuf_release(&sb);
        }
 
-       if (!access(mkpath("%s/shallow", ref_git), F_OK))
-               die(_("reference repository '%s' is shallow"), item->string);
-
-       if (!access(mkpath("%s/info/grafts", ref_git), F_OK))
-               die(_("reference repository '%s' is grafted"), item->string);
-
-       strbuf_addf(&alternate, "%s/objects", ref_git);
-       add_to_alternates_file(alternate.buf);
-       strbuf_release(&alternate);
+       strbuf_release(&err);
        free(ref_git);
        return 0;
 }
 
 static void setup_reference(void)
 {
-       for_each_string_list(&option_reference, add_one_reference, NULL);
+       int required = 1;
+       for_each_string_list(&option_required_reference,
+                            add_one_reference, &required);
+       required = 0;
+       for_each_string_list(&option_optional_reference,
+                            add_one_reference, &required);
 }
 
 static void copy_alternates(struct strbuf *src, struct strbuf *dst,
@@ -353,8 +351,11 @@ static void copy_alternates(struct strbuf *src, struct strbuf *dst,
                        continue;
                }
                abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
-               normalize_path_copy(abs_path, abs_path);
-               add_to_alternates_file(abs_path);
+               if (!normalize_path_copy(abs_path, abs_path))
+                       add_to_alternates_file(abs_path);
+               else
+                       warning("skipping invalid relative alternate: %s/%s",
+                               src_repo, line.buf);
                free(abs_path);
        }
        strbuf_release(&line);
@@ -622,13 +623,13 @@ static void update_remote_refs(const struct ref *refs,
        const struct ref *rm = mapped_refs;
 
        if (check_connectivity) {
-               if (transport->progress)
-                       fprintf(stderr, _("Checking connectivity... "));
-               if (check_everything_connected_with_transport(iterate_ref_map,
-                                                             0, &rm, transport))
+               struct check_connected_options opt = CHECK_CONNECTED_INIT;
+
+               opt.transport = transport;
+               opt.progress = transport->progress;
+
+               if (check_connected(iterate_ref_map, &rm, &opt))
                        die(_("remote did not send all necessary objects"));
-               if (transport->progress)
-                       fprintf(stderr, _("done.\n"));
        }
 
        if (refs) {
@@ -678,7 +679,7 @@ static void update_head(const struct ref *our, const struct ref *remote,
        }
 }
 
-static int checkout(void)
+static int checkout(int submodule_progress)
 {
        unsigned char sha1[20];
        char *head;
@@ -732,8 +733,22 @@ static int checkout(void)
        err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
                           sha1_to_hex(sha1), "1", NULL);
 
-       if (!err && option_recursive)
-               err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
+       if (!err && option_recursive) {
+               struct argv_array args = ARGV_ARRAY_INIT;
+               argv_array_pushl(&args, "submodule", "update", "--init", "--recursive", NULL);
+
+               if (option_shallow_submodules == 1)
+                       argv_array_push(&args, "--depth=1");
+
+               if (max_jobs != -1)
+                       argv_array_pushf(&args, "--jobs=%d", max_jobs);
+
+               if (submodule_progress)
+                       argv_array_push(&args, "--progress");
+
+               err = run_command_v_opt(args.argv, RUN_GIT_CMD);
+               argv_array_clear(&args);
+       }
 
        return err;
 }
@@ -838,6 +853,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        const char *src_ref_prefix = "refs/heads/";
        struct remote *remote;
        int err = 0, complete_refs_before_fetch = 1;
+       int submodule_progress;
 
        struct refspec *refspec;
        const char *fetch_pattern;
@@ -854,8 +870,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                usage_msg_opt(_("You must specify a repository to clone."),
                        builtin_clone_usage, builtin_clone_options);
 
+       if (option_depth || option_since || option_not.nr)
+               deepen = 1;
        if (option_single_branch == -1)
-               option_single_branch = option_depth ? 1 : 0;
+               option_single_branch = deepen ? 1 : 0;
 
        if (option_mirror)
                option_bare = 1;
@@ -939,6 +957,24 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                        fprintf(stderr, _("Cloning into '%s'...\n"), dir);
        }
 
+       if (option_recursive) {
+               if (option_required_reference.nr &&
+                   option_optional_reference.nr)
+                       die(_("clone --recursive is not compatible with "
+                             "both --reference and --reference-if-able"));
+               else if (option_required_reference.nr) {
+                       string_list_append(&option_config,
+                               "submodule.alternateLocation=superproject");
+                       string_list_append(&option_config,
+                               "submodule.alternateErrorStrategy=die");
+               } else if (option_optional_reference.nr) {
+                       string_list_append(&option_config,
+                               "submodule.alternateLocation=superproject");
+                       string_list_append(&option_config,
+                               "submodule.alternateErrorStrategy=info");
+               }
+       }
+
        init_db(git_dir, real_git_dir, option_template, INIT_DB_QUIET);
 
        if (real_git_dir)
@@ -963,7 +999,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        git_config_set(key.buf, repo);
        strbuf_reset(&key);
 
-       if (option_reference.nr)
+       if (option_required_reference.nr || option_optional_reference.nr)
                setup_reference();
 
        fetch_pattern = value.buf;
@@ -981,6 +1017,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        if (is_local) {
                if (option_depth)
                        warning(_("--depth is ignored in local clones; use file:// instead."));
+               if (option_since)
+                       warning(_("--shallow-since is ignored in local clones; use file:// instead."));
+               if (option_not.nr)
+                       warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
                if (!access(mkpath("%s/shallow", path), F_OK)) {
                        if (option_local > 0)
                                warning(_("source repository is shallow, ignoring --local"));
@@ -999,6 +1039,12 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        if (option_depth)
                transport_set_option(transport, TRANS_OPT_DEPTH,
                                     option_depth);
+       if (option_since)
+               transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
+                                    option_since);
+       if (option_not.nr)
+               transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
+                                    (const char *)&option_not);
        if (option_single_branch)
                transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
 
@@ -1006,7 +1052,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
                transport_set_option(transport, TRANS_OPT_UPLOADPACK,
                                     option_upload_pack);
 
-       if (transport->smart_options && !option_depth)
+       if (transport->smart_options && !deepen)
                transport->smart_options->check_self_contained_and_connected = 1;
 
        refs = transport_get_remote_refs(transport);
@@ -1076,6 +1122,14 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 
        update_head(our_head_points_at, remote_head, reflog_msg.buf);
 
+       /*
+        * We want to show progress for recursive submodule clones iff
+        * we did so for the main clone. But only the transport knows
+        * the final decision for this flag, so we need to rescue the value
+        * before we free the transport.
+        */
+       submodule_progress = transport->progress;
+
        transport_unlock_pack(transport);
        transport_disconnect(transport);
 
@@ -1085,7 +1139,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
        }
 
        junk_mode = JUNK_LEAVE_REPO;
-       err = checkout();
+       err = checkout(submodule_progress);
 
        strbuf_release(&reflog_msg);
        strbuf_release(&branch_top);