| /* |
| * Builtin "git clone" |
| * |
| * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>, |
| * 2008 Daniel Barkalow <barkalow@iabervon.org> |
| * Based on git-commit.sh by Junio C Hamano and Linus Torvalds |
| * |
| * Clone a repository into a different directory that does not yet exist. |
| */ |
| |
| #include "builtin.h" |
| #include "parse-options.h" |
| #include "fetch-pack.h" |
| #include "refs.h" |
| #include "tree.h" |
| #include "tree-walk.h" |
| #include "unpack-trees.h" |
| #include "transport.h" |
| #include "strbuf.h" |
| #include "dir.h" |
| #include "sigchain.h" |
| #include "branch.h" |
| #include "remote.h" |
| #include "run-command.h" |
| #include "connected.h" |
| |
| /* |
| * Overall FIXMEs: |
| * - respect DB_ENVIRONMENT for .git/objects. |
| * |
| * Implementation notes: |
| * - dropping use-separate-remote and no-separate-remote compatibility |
| * |
| */ |
| static const char * const builtin_clone_usage[] = { |
| N_("git clone [options] [--] <repo> [<dir>]"), |
| NULL |
| }; |
| |
| 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 char *option_origin = NULL; |
| static char *option_branch = NULL; |
| static const char *real_git_dir; |
| static char *option_upload_pack = "git-upload-pack"; |
| static int option_verbosity; |
| static int option_progress = -1; |
| static struct string_list option_config; |
| static struct string_list option_reference; |
| |
| static int opt_parse_reference(const struct option *opt, const char *arg, int unset) |
| { |
| struct string_list *option_reference = opt->value; |
| if (!arg) |
| return -1; |
| string_list_append(option_reference, arg); |
| return 0; |
| } |
| |
| static struct option builtin_clone_options[] = { |
| OPT__VERBOSITY(&option_verbosity), |
| OPT_BOOL(0, "progress", &option_progress, |
| N_("force progress reporting")), |
| OPT_BOOL('n', "no-checkout", &option_no_checkout, |
| N_("don't create a checkout")), |
| OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")), |
| OPT_HIDDEN_BOOL(0, "naked", &option_bare, |
| N_("create a bare repository")), |
| OPT_BOOL(0, "mirror", &option_mirror, |
| N_("create a mirror repository (implies bare)")), |
| OPT_BOOL('l', "local", &option_local, |
| N_("to clone from a local repository")), |
| OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks, |
| N_("don't use local hardlinks, always copy")), |
| OPT_BOOL('s', "shared", &option_shared, |
| N_("setup as shared repository")), |
| OPT_BOOL(0, "recursive", &option_recursive, |
| N_("initialize submodules in the clone")), |
| OPT_BOOL(0, "recurse-submodules", &option_recursive, |
| N_("initialize submodules in the clone")), |
| OPT_STRING(0, "template", &option_template, N_("template-directory"), |
| N_("directory from which templates will be used")), |
| OPT_CALLBACK(0 , "reference", &option_reference, N_("repo"), |
| N_("reference repository"), &opt_parse_reference), |
| OPT_STRING('o', "origin", &option_origin, N_("name"), |
| N_("use <name> instead of 'origin' to track upstream")), |
| OPT_STRING('b', "branch", &option_branch, N_("branch"), |
| N_("checkout <branch> instead of the remote's HEAD")), |
| OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"), |
| 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_BOOL(0, "single-branch", &option_single_branch, |
| N_("clone only one branch, HEAD or --branch")), |
| 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"), |
| N_("set config inside the new repository")), |
| OPT_END() |
| }; |
| |
| static const char *argv_submodule[] = { |
| "submodule", "update", "--init", "--recursive", NULL |
| }; |
| |
| static char *get_repo_path(const char *repo, int *is_bundle) |
| { |
| static char *suffix[] = { "/.git", "", ".git/.git", ".git" }; |
| static char *bundle_suffix[] = { ".bundle", "" }; |
| struct stat st; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(suffix); i++) { |
| const char *path; |
| path = mkpath("%s%s", repo, suffix[i]); |
| if (stat(path, &st)) |
| continue; |
| if (S_ISDIR(st.st_mode) && is_git_directory(path)) { |
| *is_bundle = 0; |
| return xstrdup(absolute_path(path)); |
| } else if (S_ISREG(st.st_mode) && st.st_size > 8) { |
| /* Is it a "gitfile"? */ |
| char signature[8]; |
| int len, fd = open(path, O_RDONLY); |
| if (fd < 0) |
| continue; |
| len = read_in_full(fd, signature, 8); |
| close(fd); |
| if (len != 8 || strncmp(signature, "gitdir: ", 8)) |
| continue; |
| path = read_gitfile(path); |
| if (path) { |
| *is_bundle = 0; |
| return xstrdup(absolute_path(path)); |
| } |
| } |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) { |
| const char *path; |
| path = mkpath("%s%s", repo, bundle_suffix[i]); |
| if (!stat(path, &st) && S_ISREG(st.st_mode)) { |
| *is_bundle = 1; |
| return xstrdup(absolute_path(path)); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static char *guess_dir_name(const char *repo, int is_bundle, int is_bare) |
| { |
| const char *end = repo + strlen(repo), *start; |
| char *dir; |
| |
| /* |
| * Strip trailing spaces, slashes and /.git |
| */ |
| while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1]))) |
| end--; |
| if (end - repo > 5 && is_dir_sep(end[-5]) && |
| !strncmp(end - 4, ".git", 4)) { |
| end -= 5; |
| while (repo < end && is_dir_sep(end[-1])) |
| end--; |
| } |
| |
| /* |
| * Find last component, but be prepared that repo could have |
| * the form "remote.example.com:foo.git", i.e. no slash |
| * in the directory part. |
| */ |
| start = end; |
| while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':') |
| start--; |
| |
| /* |
| * Strip .{bundle,git}. |
| */ |
| if (is_bundle) { |
| if (end - start > 7 && !strncmp(end - 7, ".bundle", 7)) |
| end -= 7; |
| } else { |
| if (end - start > 4 && !strncmp(end - 4, ".git", 4)) |
| end -= 4; |
| } |
| |
| if (is_bare) { |
| struct strbuf result = STRBUF_INIT; |
| strbuf_addf(&result, "%.*s.git", (int)(end - start), start); |
| dir = strbuf_detach(&result, NULL); |
| } else |
| dir = xstrndup(start, end - start); |
| /* |
| * Replace sequences of 'control' characters and whitespace |
| * with one ascii space, remove leading and trailing spaces. |
| */ |
| if (*dir) { |
| char *out = dir; |
| int prev_space = 1 /* strip leading whitespace */; |
| for (end = dir; *end; ++end) { |
| char ch = *end; |
| if ((unsigned char)ch < '\x20') |
| ch = '\x20'; |
| if (isspace(ch)) { |
| if (prev_space) |
| continue; |
| prev_space = 1; |
| } else |
| prev_space = 0; |
| *out++ = ch; |
| } |
| *out = '\0'; |
| if (out > dir && prev_space) |
| out[-1] = '\0'; |
| } |
| return dir; |
| } |
| |
| static void strip_trailing_slashes(char *dir) |
| { |
| char *end = dir + strlen(dir); |
| |
| while (dir < end - 1 && is_dir_sep(end[-1])) |
| end--; |
| *end = '\0'; |
| } |
| |
| 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); |
| } |
| |
| 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))) |
| die(_("reference repository '%s' is not a local repository."), |
| item->string); |
| |
| 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); |
| free(ref_git); |
| return 0; |
| } |
| |
| static void setup_reference(void) |
| { |
| for_each_string_list(&option_reference, add_one_reference, NULL); |
| } |
| |
| static void copy_alternates(struct strbuf *src, struct strbuf *dst, |
| const char *src_repo) |
| { |
| /* |
| * Read from the source objects/info/alternates file |
| * and copy the entries to corresponding file in the |
| * destination repository with add_to_alternates_file(). |
| * Both src and dst have "$path/objects/info/alternates". |
| * |
| * Instead of copying bit-for-bit from the original, |
| * we need to append to existing one so that the already |
| * created entry via "clone -s" is not lost, and also |
| * to turn entries with paths relative to the original |
| * absolute, so that they can be used in the new repository. |
| */ |
| FILE *in = fopen(src->buf, "r"); |
| struct strbuf line = STRBUF_INIT; |
| |
| while (strbuf_getline(&line, in, '\n') != EOF) { |
| char *abs_path, abs_buf[PATH_MAX]; |
| if (!line.len || line.buf[0] == '#') |
| continue; |
| if (is_absolute_path(line.buf)) { |
| add_to_alternates_file(line.buf); |
| continue; |
| } |
| abs_path = mkpath("%s/objects/%s", src_repo, line.buf); |
| normalize_path_copy(abs_buf, abs_path); |
| add_to_alternates_file(abs_buf); |
| } |
| strbuf_release(&line); |
| fclose(in); |
| } |
| |
| static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest, |
| const char *src_repo, int src_baselen) |
| { |
| struct dirent *de; |
| struct stat buf; |
| int src_len, dest_len; |
| DIR *dir; |
| |
| dir = opendir(src->buf); |
| if (!dir) |
| die_errno(_("failed to open '%s'"), src->buf); |
| |
| if (mkdir(dest->buf, 0777)) { |
| if (errno != EEXIST) |
| die_errno(_("failed to create directory '%s'"), dest->buf); |
| else if (stat(dest->buf, &buf)) |
| die_errno(_("failed to stat '%s'"), dest->buf); |
| else if (!S_ISDIR(buf.st_mode)) |
| die(_("%s exists and is not a directory"), dest->buf); |
| } |
| |
| strbuf_addch(src, '/'); |
| src_len = src->len; |
| strbuf_addch(dest, '/'); |
| dest_len = dest->len; |
| |
| while ((de = readdir(dir)) != NULL) { |
| strbuf_setlen(src, src_len); |
| strbuf_addstr(src, de->d_name); |
| strbuf_setlen(dest, dest_len); |
| strbuf_addstr(dest, de->d_name); |
| if (stat(src->buf, &buf)) { |
| warning (_("failed to stat %s\n"), src->buf); |
| continue; |
| } |
| if (S_ISDIR(buf.st_mode)) { |
| if (de->d_name[0] != '.') |
| copy_or_link_directory(src, dest, |
| src_repo, src_baselen); |
| continue; |
| } |
| |
| /* Files that cannot be copied bit-for-bit... */ |
| if (!strcmp(src->buf + src_baselen, "/info/alternates")) { |
| copy_alternates(src, dest, src_repo); |
| continue; |
| } |
| |
| if (unlink(dest->buf) && errno != ENOENT) |
| die_errno(_("failed to unlink '%s'"), dest->buf); |
| if (!option_no_hardlinks) { |
| if (!link(src->buf, dest->buf)) |
| continue; |
| if (option_local > 0) |
| die_errno(_("failed to create link '%s'"), dest->buf); |
| option_no_hardlinks = 1; |
| } |
| if (copy_file_with_time(dest->buf, src->buf, 0666)) |
| die_errno(_("failed to copy file to '%s'"), dest->buf); |
| } |
| closedir(dir); |
| } |
| |
| static void clone_local(const char *src_repo, const char *dest_repo) |
| { |
| if (option_shared) { |
| struct strbuf alt = STRBUF_INIT; |
| strbuf_addf(&alt, "%s/objects", src_repo); |
| add_to_alternates_file(alt.buf); |
| strbuf_release(&alt); |
| } else { |
| struct strbuf src = STRBUF_INIT; |
| struct strbuf dest = STRBUF_INIT; |
| strbuf_addf(&src, "%s/objects", src_repo); |
| strbuf_addf(&dest, "%s/objects", dest_repo); |
| copy_or_link_directory(&src, &dest, src_repo, src.len); |
| strbuf_release(&src); |
| strbuf_release(&dest); |
| } |
| |
| if (0 <= option_verbosity) |
| fprintf(stderr, _("done.\n")); |
| } |
| |
| static const char *junk_work_tree; |
| static const char *junk_git_dir; |
| static pid_t junk_pid; |
| static enum { |
| JUNK_LEAVE_NONE, |
| JUNK_LEAVE_REPO, |
| JUNK_LEAVE_ALL |
| } junk_mode = JUNK_LEAVE_NONE; |
| |
| static const char junk_leave_repo_msg[] = |
| N_("Clone succeeded, but checkout failed.\n" |
| "You can inspect what was checked out with 'git status'\n" |
| "and retry the checkout with 'git checkout -f HEAD'\n"); |
| |
| static void remove_junk(void) |
| { |
| struct strbuf sb = STRBUF_INIT; |
| |
| switch (junk_mode) { |
| case JUNK_LEAVE_REPO: |
| warning("%s", _(junk_leave_repo_msg)); |
| /* fall-through */ |
| case JUNK_LEAVE_ALL: |
| return; |
| default: |
| /* proceed to removal */ |
| break; |
| } |
| |
| if (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_reset(&sb); |
| } |
| } |
| |
| static void remove_junk_on_signal(int signo) |
| { |
| remove_junk(); |
| sigchain_pop(signo); |
| raise(signo); |
| } |
| |
| static struct ref *find_remote_branch(const struct ref *refs, const char *branch) |
| { |
| struct ref *ref; |
| struct strbuf head = STRBUF_INIT; |
| strbuf_addstr(&head, "refs/heads/"); |
| strbuf_addstr(&head, branch); |
| ref = find_ref_by_name(refs, head.buf); |
| strbuf_release(&head); |
| |
| if (ref) |
| return ref; |
| |
| strbuf_addstr(&head, "refs/tags/"); |
| strbuf_addstr(&head, branch); |
| ref = find_ref_by_name(refs, head.buf); |
| strbuf_release(&head); |
| |
| return ref; |
| } |
| |
| static struct ref *wanted_peer_refs(const struct ref *refs, |
| struct refspec *refspec) |
| { |
| struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD")); |
| struct ref *local_refs = head; |
| struct ref **tail = head ? &head->next : &local_refs; |
| |
| if (option_single_branch) { |
| struct ref *remote_head = NULL; |
| |
| if (!option_branch) |
| remote_head = guess_remote_head(head, refs, 0); |
| else { |
| local_refs = NULL; |
| tail = &local_refs; |
| remote_head = copy_ref(find_remote_branch(refs, option_branch)); |
| } |
| |
| if (!remote_head && option_branch) |
| warning(_("Could not find remote branch %s to clone."), |
| option_branch); |
| else { |
| get_fetch_map(remote_head, refspec, &tail, 0); |
| |
| /* if --branch=tag, pull the requested tag explicitly */ |
| get_fetch_map(remote_head, tag_refspec, &tail, 0); |
| } |
| } else |
| get_fetch_map(refs, refspec, &tail, 0); |
| |
| if (!option_mirror && !option_single_branch) |
| get_fetch_map(refs, tag_refspec, &tail, 0); |
| |
| return local_refs; |
| } |
| |
| static void write_remote_refs(const struct ref *local_refs) |
| { |
| const struct ref *r; |
| |
| lock_packed_refs(LOCK_DIE_ON_ERROR); |
| |
| for (r = local_refs; r; r = r->next) { |
| if (!r->peer_ref) |
| continue; |
| add_packed_ref(r->peer_ref->name, r->old_sha1); |
| } |
| |
| if (commit_packed_refs()) |
| die_errno("unable to overwrite old ref-pack file"); |
| } |
| |
| static void write_followtags(const struct ref *refs, const char *msg) |
| { |
| const struct ref *ref; |
| for (ref = refs; ref; ref = ref->next) { |
| if (!starts_with(ref->name, "refs/tags/")) |
| continue; |
| if (ends_with(ref->name, "^{}")) |
| continue; |
| if (!has_sha1_file(ref->old_sha1)) |
| continue; |
| update_ref(msg, ref->name, ref->old_sha1, |
| NULL, 0, DIE_ON_ERR); |
| } |
| } |
| |
| static int iterate_ref_map(void *cb_data, unsigned char sha1[20]) |
| { |
| struct ref **rm = cb_data; |
| struct ref *ref = *rm; |
| |
| /* |
| * Skip anything missing a peer_ref, which we are not |
| * actually going to write a ref for. |
| */ |
| while (ref && !ref->peer_ref) |
| ref = ref->next; |
| /* Returning -1 notes "end of list" to the caller. */ |
| if (!ref) |
| return -1; |
| |
| hashcpy(sha1, ref->old_sha1); |
| *rm = ref->next; |
| return 0; |
| } |
| |
| static void update_remote_refs(const struct ref *refs, |
| const struct ref *mapped_refs, |
| const struct ref *remote_head_points_at, |
| const char *branch_top, |
| const char *msg, |
| struct transport *transport, |
| int check_connectivity) |
| { |
| 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)) |
| die(_("remote did not send all necessary objects")); |
| if (transport->progress) |
| fprintf(stderr, _("done.\n")); |
| } |
| |
| if (refs) { |
| write_remote_refs(mapped_refs); |
| if (option_single_branch) |
| write_followtags(refs, msg); |
| } |
| |
| if (remote_head_points_at && !option_bare) { |
| struct strbuf head_ref = STRBUF_INIT; |
| strbuf_addstr(&head_ref, branch_top); |
| strbuf_addstr(&head_ref, "HEAD"); |
| create_symref(head_ref.buf, |
| remote_head_points_at->peer_ref->name, |
| msg); |
| } |
| } |
| |
| static void update_head(const struct ref *our, const struct ref *remote, |
| const char *msg) |
| { |
| if (our && starts_with(our->name, "refs/heads/")) { |
| /* Local default branch link */ |
| create_symref("HEAD", our->name, NULL); |
| if (!option_bare) { |
| const char *head = skip_prefix(our->name, "refs/heads/"); |
| update_ref(msg, "HEAD", our->old_sha1, NULL, 0, DIE_ON_ERR); |
| install_branch_config(0, head, option_origin, our->name); |
| } |
| } else if (our) { |
| struct commit *c = lookup_commit_reference(our->old_sha1); |
| /* --branch specifies a non-branch (i.e. tags), detach HEAD */ |
| update_ref(msg, "HEAD", c->object.sha1, |
| NULL, REF_NODEREF, DIE_ON_ERR); |
| } else if (remote) { |
| /* |
| * We know remote HEAD points to a non-branch, or |
| * HEAD points to a branch but we don't know which one. |
| * Detach HEAD in all these cases. |
| */ |
| update_ref(msg, "HEAD", remote->old_sha1, |
| NULL, REF_NODEREF, DIE_ON_ERR); |
| } |
| } |
| |
| static int checkout(void) |
| { |
| unsigned char sha1[20]; |
| char *head; |
| struct lock_file *lock_file; |
| struct unpack_trees_options opts; |
| struct tree *tree; |
| struct tree_desc t; |
| int err = 0, fd; |
| |
| if (option_no_checkout) |
| return 0; |
| |
| head = resolve_refdup("HEAD", sha1, 1, NULL); |
| if (!head) { |
| warning(_("remote HEAD refers to nonexistent ref, " |
| "unable to checkout.\n")); |
| return 0; |
| } |
| if (!strcmp(head, "HEAD")) { |
| if (advice_detached_head) |
| detach_advice(sha1_to_hex(sha1)); |
| } else { |
| if (!starts_with(head, "refs/heads/")) |
| die(_("HEAD not found below refs/heads!")); |
| } |
| free(head); |
| |
| /* We need to be in the new work tree for the checkout */ |
| setup_work_tree(); |
| |
| lock_file = xcalloc(1, sizeof(struct lock_file)); |
| fd = hold_locked_index(lock_file, 1); |
| |
| memset(&opts, 0, sizeof opts); |
| opts.update = 1; |
| opts.merge = 1; |
| opts.fn = oneway_merge; |
| opts.verbose_update = (option_verbosity >= 0); |
| opts.src_index = &the_index; |
| opts.dst_index = &the_index; |
| |
| tree = parse_tree_indirect(sha1); |
| parse_tree(tree); |
| init_tree_desc(&t, tree->buffer, tree->size); |
| if (unpack_trees(1, &t, &opts) < 0) |
| die(_("unable to checkout working tree")); |
| |
| if (write_cache(fd, active_cache, active_nr) || |
| commit_locked_index(lock_file)) |
| die(_("unable to write new index file")); |
| |
| 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); |
| |
| return err; |
| } |
| |
| static int write_one_config(const char *key, const char *value, void *data) |
| { |
| return git_config_set_multivar(key, value ? value : "true", "^$", 0); |
| } |
| |
| static void write_config(struct string_list *config) |
| { |
| int i; |
| |
| for (i = 0; i < config->nr; i++) { |
| if (git_config_parse_parameter(config->items[i].string, |
| write_one_config, NULL) < 0) |
| die("unable to write parameters to config file"); |
| } |
| } |
| |
| static void write_refspec_config(const char* src_ref_prefix, |
| const struct ref* our_head_points_at, |
| const struct ref* remote_head_points_at, struct strbuf* branch_top) |
| { |
| struct strbuf key = STRBUF_INIT; |
| struct strbuf value = STRBUF_INIT; |
| |
| if (option_mirror || !option_bare) { |
| if (option_single_branch && !option_mirror) { |
| if (option_branch) { |
| if (strstr(our_head_points_at->name, "refs/tags/")) |
| strbuf_addf(&value, "+%s:%s", our_head_points_at->name, |
| our_head_points_at->name); |
| else |
| strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name, |
| branch_top->buf, option_branch); |
| } else if (remote_head_points_at) { |
| strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name, |
| branch_top->buf, |
| skip_prefix(remote_head_points_at->name, "refs/heads/")); |
| } |
| /* |
| * otherwise, the next "git fetch" will |
| * simply fetch from HEAD without updating |
| * any remote-tracking branch, which is what |
| * we want. |
| */ |
| } else { |
| strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf); |
| } |
| /* Configure the remote */ |
| if (value.len) { |
| strbuf_addf(&key, "remote.%s.fetch", option_origin); |
| git_config_set_multivar(key.buf, value.buf, "^$", 0); |
| strbuf_reset(&key); |
| |
| if (option_mirror) { |
| strbuf_addf(&key, "remote.%s.mirror", option_origin); |
| git_config_set(key.buf, "true"); |
| strbuf_reset(&key); |
| } |
| } |
| } |
| |
| strbuf_release(&key); |
| strbuf_release(&value); |
| } |
| |
| int cmd_clone(int argc, const char **argv, const char *prefix) |
| { |
| int is_bundle = 0, is_local; |
| struct stat buf; |
| const char *repo_name, *repo, *work_tree, *git_dir; |
| char *path, *dir; |
| int dest_exists; |
| const struct ref *refs, *remote_head; |
| const struct ref *remote_head_points_at; |
| const struct ref *our_head_points_at; |
| struct ref *mapped_refs; |
| const struct ref *ref; |
| struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; |
| struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; |
| struct transport *transport = NULL; |
| const char *src_ref_prefix = "refs/heads/"; |
| struct remote *remote; |
| int err = 0, complete_refs_before_fetch = 1; |
| |
| struct refspec *refspec; |
| const char *fetch_pattern; |
| |
| junk_pid = getpid(); |
| |
| packet_trace_identity("clone"); |
| argc = parse_options(argc, argv, prefix, builtin_clone_options, |
| builtin_clone_usage, 0); |
| |
| if (argc > 2) |
| usage_msg_opt(_("Too many arguments."), |
| builtin_clone_usage, builtin_clone_options); |
| |
| if (argc == 0) |
| usage_msg_opt(_("You must specify a repository to clone."), |
| builtin_clone_usage, builtin_clone_options); |
| |
| if (option_single_branch == -1) |
| option_single_branch = option_depth ? 1 : 0; |
| |
| if (option_mirror) |
| option_bare = 1; |
| |
| if (option_bare) { |
| if (option_origin) |
| die(_("--bare and --origin %s options are incompatible."), |
| option_origin); |
| if (real_git_dir) |
| die(_("--bare and --separate-git-dir are incompatible.")); |
| option_no_checkout = 1; |
| } |
| |
| if (!option_origin) |
| option_origin = "origin"; |
| |
| repo_name = argv[0]; |
| |
| path = get_repo_path(repo_name, &is_bundle); |
| if (path) |
| repo = xstrdup(absolute_path(repo_name)); |
| else if (!strchr(repo_name, ':')) |
| die(_("repository '%s' does not exist"), repo_name); |
| else |
| repo = repo_name; |
| is_local = option_local != 0 && path && !is_bundle; |
| if (is_local) { |
| if (option_depth) |
| warning(_("--depth 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")); |
| is_local = 0; |
| } |
| } |
| if (option_local > 0 && !is_local) |
| warning(_("--local is ignored")); |
| |
| /* no need to be strict, transport_set_option() will validate it again */ |
| if (option_depth && atoi(option_depth) < 1) |
| die(_("depth %s is not a positive number"), option_depth); |
| |
| if (argc == 2) |
| dir = xstrdup(argv[1]); |
| else |
| dir = guess_dir_name(repo_name, is_bundle, option_bare); |
| strip_trailing_slashes(dir); |
| |
| dest_exists = !stat(dir, &buf); |
| if (dest_exists && !is_empty_dir(dir)) |
| die(_("destination path '%s' already exists and is not " |
| "an empty directory."), dir); |
| |
| strbuf_addf(&reflog_msg, "clone: from %s", repo); |
| |
| if (option_bare) |
| work_tree = NULL; |
| else { |
| work_tree = getenv("GIT_WORK_TREE"); |
| if (work_tree && !stat(work_tree, &buf)) |
| die(_("working tree '%s' already exists."), work_tree); |
| } |
| |
| if (option_bare || work_tree) |
| git_dir = xstrdup(dir); |
| else { |
| work_tree = dir; |
| git_dir = mkpathdup("%s/.git", dir); |
| } |
| |
| if (!option_bare) { |
| junk_work_tree = work_tree; |
| if (safe_create_leading_directories_const(work_tree) < 0) |
| die_errno(_("could not create leading directories of '%s'"), |
| work_tree); |
| if (!dest_exists && mkdir(work_tree, 0777)) |
| die_errno(_("could not create work tree dir '%s'."), |
| work_tree); |
| set_git_work_tree(work_tree); |
| } |
| junk_git_dir = git_dir; |
| atexit(remove_junk); |
| sigchain_push_common(remove_junk_on_signal); |
| |
| if (safe_create_leading_directories_const(git_dir) < 0) |
| die(_("could not create leading directories of '%s'"), git_dir); |
| |
| set_git_dir_init(git_dir, real_git_dir, 0); |
| if (real_git_dir) { |
| git_dir = real_git_dir; |
| junk_git_dir = real_git_dir; |
| } |
| |
| if (0 <= option_verbosity) { |
| if (option_bare) |
| fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir); |
| else |
| fprintf(stderr, _("Cloning into '%s'...\n"), dir); |
| } |
| init_db(option_template, INIT_DB_QUIET); |
| write_config(&option_config); |
| |
| git_config(git_default_config, NULL); |
| |
| if (option_bare) { |
| if (option_mirror) |
| src_ref_prefix = "refs/"; |
| strbuf_addstr(&branch_top, src_ref_prefix); |
| |
| git_config_set("core.bare", "true"); |
| } else { |
| strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); |
| } |
| |
| strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); |
| strbuf_addf(&key, "remote.%s.url", option_origin); |
| git_config_set(key.buf, repo); |
| strbuf_reset(&key); |
| |
| if (option_reference.nr) |
| setup_reference(); |
| |
| fetch_pattern = value.buf; |
| refspec = parse_fetch_refspec(1, &fetch_pattern); |
| |
| strbuf_reset(&value); |
| |
| remote = remote_get(option_origin); |
| transport = transport_get(remote, remote->url[0]); |
| transport->cloning = 1; |
| |
| if (!transport->get_refs_list || (!is_local && !transport->fetch)) |
| die(_("Don't know how to clone %s"), transport->url); |
| |
| transport_set_option(transport, TRANS_OPT_KEEP, "yes"); |
| |
| if (option_depth) |
| transport_set_option(transport, TRANS_OPT_DEPTH, |
| option_depth); |
| if (option_single_branch) |
| transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); |
| |
| transport_set_verbosity(transport, option_verbosity, option_progress); |
| |
| if (option_upload_pack) |
| transport_set_option(transport, TRANS_OPT_UPLOADPACK, |
| option_upload_pack); |
| |
| if (transport->smart_options && !option_depth) |
| transport->smart_options->check_self_contained_and_connected = 1; |
| |
| refs = transport_get_remote_refs(transport); |
| |
| if (refs) { |
| mapped_refs = wanted_peer_refs(refs, refspec); |
| /* |
| * transport_get_remote_refs() may return refs with null sha-1 |
| * in mapped_refs (see struct transport->get_refs_list |
| * comment). In that case we need fetch it early because |
| * remote_head code below relies on it. |
| * |
| * for normal clones, transport_get_remote_refs() should |
| * return reliable ref set, we can delay cloning until after |
| * remote HEAD check. |
| */ |
| for (ref = refs; ref; ref = ref->next) |
| if (is_null_sha1(ref->old_sha1)) { |
| complete_refs_before_fetch = 0; |
| break; |
| } |
| |
| if (!is_local && !complete_refs_before_fetch) |
| transport_fetch_refs(transport, mapped_refs); |
| |
| remote_head = find_ref_by_name(refs, "HEAD"); |
| remote_head_points_at = |
| guess_remote_head(remote_head, mapped_refs, 0); |
| |
| if (option_branch) { |
| our_head_points_at = |
| find_remote_branch(mapped_refs, option_branch); |
| |
| if (!our_head_points_at) |
| die(_("Remote branch %s not found in upstream %s"), |
| option_branch, option_origin); |
| } |
| else |
| our_head_points_at = remote_head_points_at; |
| } |
| else { |
| if (option_branch) |
| die(_("Remote branch %s not found in upstream %s"), |
| option_branch, option_origin); |
| |
| warning(_("You appear to have cloned an empty repository.")); |
| mapped_refs = NULL; |
| our_head_points_at = NULL; |
| remote_head_points_at = NULL; |
| remote_head = NULL; |
| option_no_checkout = 1; |
| if (!option_bare) |
| install_branch_config(0, "master", option_origin, |
| "refs/heads/master"); |
| } |
| |
| write_refspec_config(src_ref_prefix, our_head_points_at, |
| remote_head_points_at, &branch_top); |
| |
| if (is_local) |
| clone_local(path, git_dir); |
| else if (refs && complete_refs_before_fetch) |
| transport_fetch_refs(transport, mapped_refs); |
| |
| update_remote_refs(refs, mapped_refs, remote_head_points_at, |
| branch_top.buf, reflog_msg.buf, transport, !is_local); |
| |
| update_head(our_head_points_at, remote_head, reflog_msg.buf); |
| |
| transport_unlock_pack(transport); |
| transport_disconnect(transport); |
| |
| junk_mode = JUNK_LEAVE_REPO; |
| err = checkout(); |
| |
| strbuf_release(&reflog_msg); |
| strbuf_release(&branch_top); |
| strbuf_release(&key); |
| strbuf_release(&value); |
| junk_mode = JUNK_LEAVE_ALL; |
| return err; |
| } |