diff options
Diffstat (limited to 'builtin-clone.c')
-rw-r--r-- | builtin-clone.c | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/builtin-clone.c b/builtin-clone.c deleted file mode 100644 index caf3025031..0000000000 --- a/builtin-clone.c +++ /dev/null @@ -1,664 +0,0 @@ -/* - * 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 "cache.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 "pack-refs.h" -#include "sigchain.h" -#include "branch.h" -#include "remote.h" -#include "run-command.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[] = { - "git clone [options] [--] <repo> [<dir>]", - NULL -}; - -static int option_quiet, option_no_checkout, option_bare, option_mirror; -static int option_local, option_no_hardlinks, option_shared, option_recursive; -static char *option_template, *option_reference, *option_depth; -static char *option_origin = NULL; -static char *option_branch = NULL; -static char *option_upload_pack = "git-upload-pack"; -static int option_verbose; - -static struct option builtin_clone_options[] = { - OPT__QUIET(&option_quiet), - OPT__VERBOSE(&option_verbose), - OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, - "don't create a checkout"), - OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), - { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL, - "create a bare repository", - PARSE_OPT_NOARG | PARSE_OPT_HIDDEN }, - OPT_BOOLEAN(0, "mirror", &option_mirror, - "create a mirror repository (implies bare)"), - OPT_BOOLEAN('l', "local", &option_local, - "to clone from a local repository"), - OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks, - "don't use local hardlinks, always copy"), - OPT_BOOLEAN('s', "shared", &option_shared, - "setup as shared repository"), - OPT_BOOLEAN(0, "recursive", &option_recursive, - "initialize submodules in the clone"), - OPT_STRING(0, "template", &option_template, "path", - "path the template repository"), - OPT_STRING(0, "reference", &option_reference, "repo", - "reference repository"), - OPT_STRING('o', "origin", &option_origin, "branch", - "use <branch> instead of 'origin' to track upstream"), - OPT_STRING('b', "branch", &option_branch, "branch", - "checkout <branch> instead of the remote's HEAD"), - OPT_STRING('u', "upload-pack", &option_upload_pack, "path", - "path to git-upload-pack on the remote"), - OPT_STRING(0, "depth", &option_depth, "depth", - "create a shallow clone of that depth"), - - 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", "" }; - 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 (is_directory(path)) { - *is_bundle = 0; - return xstrdup(make_nonrelative_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(make_nonrelative_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 void setup_reference(const char *repo) -{ - const char *ref_git; - char *ref_git_copy; - - struct remote *remote; - struct transport *transport; - const struct ref *extra; - - ref_git = make_absolute_path(option_reference); - - if (is_directory(mkpath("%s/.git/objects", ref_git))) - ref_git = mkpath("%s/.git", ref_git); - else if (!is_directory(mkpath("%s/objects", ref_git))) - die("reference repository '%s' is not a local directory.", - option_reference); - - ref_git_copy = xstrdup(ref_git); - - add_to_alternates_file(ref_git_copy); - - remote = remote_get(ref_git_copy); - transport = transport_get(remote, ref_git_copy); - for (extra = transport_get_remote_refs(transport); extra; - extra = extra->next) - add_extra_ref(extra->name, extra->old_sha1, 0); - - transport_disconnect(transport); - - free(ref_git_copy); -} - -static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest) -{ - 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); - 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) - 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 const struct ref *clone_local(const char *src_repo, - const char *dest_repo) -{ - const struct ref *ret; - struct strbuf src = STRBUF_INIT; - struct strbuf dest = STRBUF_INIT; - struct remote *remote; - struct transport *transport; - - if (option_shared) - add_to_alternates_file(src_repo); - else { - strbuf_addf(&src, "%s/objects", src_repo); - strbuf_addf(&dest, "%s/objects", dest_repo); - copy_or_link_directory(&src, &dest); - strbuf_release(&src); - strbuf_release(&dest); - } - - remote = remote_get(src_repo); - transport = transport_get(remote, src_repo); - ret = transport_get_remote_refs(transport); - transport_disconnect(transport); - return ret; -} - -static const char *junk_work_tree; -static const char *junk_git_dir; -static pid_t junk_pid; - -static void remove_junk(void) -{ - struct strbuf sb = STRBUF_INIT; - 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 *wanted_peer_refs(const struct ref *refs, - struct refspec *refspec) -{ - struct ref *local_refs = NULL; - struct ref **tail = &local_refs; - - get_fetch_map(refs, refspec, &tail, 0); - if (!option_mirror) - 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; - - for (r = local_refs; r; r = r->next) - add_extra_ref(r->peer_ref->name, r->old_sha1, 0); - - pack_refs(PACK_REFS_ALL); - clear_extra_refs(); -} - -int cmd_clone(int argc, const char **argv, const char *prefix) -{ - int is_bundle = 0; - struct stat buf; - const char *repo_name, *repo, *work_tree, *git_dir; - char *path, *dir; - int dest_exists; - const struct ref *refs, *remote_head, *mapped_refs; - const struct ref *remote_head_points_at; - const struct ref *our_head_points_at; - struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; - struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; - struct transport *transport = NULL; - char *src_ref_prefix = "refs/heads/"; - int err = 0; - - struct refspec *refspec; - const char *fetch_pattern; - - junk_pid = getpid(); - - 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_mirror) - option_bare = 1; - - if (option_bare) { - if (option_origin) - die("--bare and --origin %s options are incompatible.", - option_origin); - 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(make_nonrelative_path(repo_name)); - else if (!strchr(repo_name, ':')) - repo = xstrdup(make_absolute_path(repo_name)); - else - repo = repo_name; - - 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 = xstrdup(mkpath("%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, 0755)) - 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); - - setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); - - if (safe_create_leading_directories_const(git_dir) < 0) - die("could not create leading directories of '%s'", git_dir); - set_git_dir(make_absolute_path(git_dir)); - - init_db(option_template, option_quiet ? INIT_DB_QUIET : 0); - - /* - * At this point, the config exists, so we do not need the - * environment variable. We actually need to unset it, too, to - * re-enable parsing of the global configs. - */ - unsetenv(CONFIG_ENVIRONMENT); - - if (option_reference) - setup_reference(git_dir); - - 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); - - if (option_mirror || !option_bare) { - /* Configure the remote */ - 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_addf(&key, "remote.%s.url", option_origin); - git_config_set(key.buf, repo); - strbuf_reset(&key); - } - - fetch_pattern = value.buf; - refspec = parse_fetch_refspec(1, &fetch_pattern); - - strbuf_reset(&value); - - if (path && !is_bundle) { - refs = clone_local(path, git_dir); - mapped_refs = wanted_peer_refs(refs, refspec); - } else { - struct remote *remote = remote_get(argv[0]); - transport = transport_get(remote, remote->url[0]); - - if (!transport->get_refs_list || !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_quiet) - transport->verbose = -1; - else if (option_verbose) - transport->progress = 1; - - if (option_upload_pack) - transport_set_option(transport, TRANS_OPT_UPLOADPACK, - option_upload_pack); - - refs = transport_get_remote_refs(transport); - if (refs) { - mapped_refs = wanted_peer_refs(refs, refspec); - transport_fetch_refs(transport, mapped_refs); - } - } - - if (refs) { - clear_extra_refs(); - - write_remote_refs(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) { - struct strbuf head = STRBUF_INIT; - strbuf_addstr(&head, src_ref_prefix); - strbuf_addstr(&head, option_branch); - our_head_points_at = - find_ref_by_name(mapped_refs, head.buf); - strbuf_release(&head); - - if (!our_head_points_at) { - warning("Remote branch %s not found in " - "upstream %s, using HEAD instead", - option_branch, option_origin); - our_head_points_at = remote_head_points_at; - } - } - else - our_head_points_at = remote_head_points_at; - } - else { - warning("You appear to have cloned an empty repository."); - 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"); - } - - if (remote_head_points_at && !option_bare) { - struct strbuf head_ref = STRBUF_INIT; - strbuf_addstr(&head_ref, branch_top.buf); - strbuf_addstr(&head_ref, "HEAD"); - create_symref(head_ref.buf, - remote_head_points_at->peer_ref->name, - reflog_msg.buf); - } - - if (our_head_points_at) { - /* Local default branch link */ - create_symref("HEAD", our_head_points_at->name, NULL); - if (!option_bare) { - const char *head = skip_prefix(our_head_points_at->name, - "refs/heads/"); - update_ref(reflog_msg.buf, "HEAD", - our_head_points_at->old_sha1, - NULL, 0, DIE_ON_ERR); - install_branch_config(0, head, option_origin, - our_head_points_at->name); - } - } else if (remote_head) { - /* Source had detached HEAD pointing somewhere. */ - if (!option_bare) { - update_ref(reflog_msg.buf, "HEAD", - remote_head->old_sha1, - NULL, REF_NODEREF, DIE_ON_ERR); - our_head_points_at = remote_head; - } - } else { - /* Nothing to checkout out */ - if (!option_no_checkout) - warning("remote HEAD refers to nonexistent ref, " - "unable to checkout.\n"); - option_no_checkout = 1; - } - - if (transport) { - transport_unlock_pack(transport); - transport_disconnect(transport); - } - - if (!option_no_checkout) { - struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); - struct unpack_trees_options opts; - struct tree *tree; - struct tree_desc t; - int fd; - - /* We need to be in the new work tree for the checkout */ - setup_work_tree(); - - 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_quiet; - opts.src_index = &the_index; - opts.dst_index = &the_index; - - tree = parse_tree_indirect(our_head_points_at->old_sha1); - parse_tree(tree); - init_tree_desc(&t, tree->buffer, tree->size); - unpack_trees(1, &t, &opts); - - if (write_cache(fd, active_cache, active_nr) || - commit_locked_index(lock_file)) - die("unable to write new index file"); - - err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), - sha1_to_hex(our_head_points_at->old_sha1), "1", - NULL); - - if (!err && option_recursive) - err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); - } - - strbuf_release(&reflog_msg); - strbuf_release(&branch_top); - strbuf_release(&key); - strbuf_release(&value); - junk_pid = 0; - return err; -} |