diff options
Diffstat (limited to 'builtin-clone.c')
-rw-r--r-- | builtin-clone.c | 553 |
1 files changed, 0 insertions, 553 deletions
diff --git a/builtin-clone.c b/builtin-clone.c deleted file mode 100644 index 7190952071..0000000000 --- a/builtin-clone.c +++ /dev/null @@ -1,553 +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" - -/* - * 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; -static int option_local, option_no_hardlinks, option_shared; -static char *option_template, *option_reference, *option_depth; -static char *option_origin = NULL; -static char *option_upload_pack = "git-upload-pack"; - -static struct option builtin_clone_options[] = { - OPT__QUIET(&option_quiet), - OPT_BOOLEAN('n', "no-checkout", &option_no_checkout, - "don't create a checkout"), - OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"), - OPT_BOOLEAN(0, "naked", &option_bare, "create a bare repository"), - 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_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 or 'origin' to track upstream"), - 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 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 (!stat(path, &st) && S_ISDIR(st.st_mode)) { - *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) -{ - const char *p, *start, *end, *limit; - int after_slash_or_colon; - - /* Guess dir name from repository: strip trailing '/', - * strip trailing '[:/]*.{git,bundle}', strip leading '.*[/:]'. */ - - after_slash_or_colon = 1; - limit = repo + strlen(repo); - start = repo; - end = limit; - for (p = repo; p < limit; p++) { - const char *prefix = is_bundle ? ".bundle" : ".git"; - if (!prefixcmp(p, prefix)) { - if (!after_slash_or_colon) - end = p; - p += strlen(prefix) - 1; - } else if (!prefixcmp(p, ".bundle")) { - if (!after_slash_or_colon) - end = p; - p += 7; - } else if (*p == '/' || *p == ':') { - if (end == limit) - end = p; - after_slash_or_colon = 1; - } else if (after_slash_or_colon) { - start = p; - end = limit; - after_slash_or_colon = 0; - } - } - - return xstrndup(start, end - start); -} - -static int is_directory(const char *path) -{ - struct stat buf; - - return !stat(path, &buf) && S_ISDIR(buf.st_mode); -} - -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(char *src, char *dest) -{ - struct dirent *de; - struct stat buf; - int src_len, dest_len; - DIR *dir; - - dir = opendir(src); - if (!dir) - die("failed to open %s\n", src); - - if (mkdir(dest, 0777)) { - if (errno != EEXIST) - die("failed to create directory %s\n", dest); - else if (stat(dest, &buf)) - die("failed to stat %s\n", dest); - else if (!S_ISDIR(buf.st_mode)) - die("%s exists and is not a directory\n", dest); - } - - src_len = strlen(src); - src[src_len] = '/'; - dest_len = strlen(dest); - dest[dest_len] = '/'; - - while ((de = readdir(dir)) != NULL) { - strcpy(src + src_len + 1, de->d_name); - strcpy(dest + dest_len + 1, de->d_name); - if (stat(src, &buf)) { - warning ("failed to stat %s\n", src); - continue; - } - if (S_ISDIR(buf.st_mode)) { - if (de->d_name[0] != '.') - copy_or_link_directory(src, dest); - continue; - } - - if (unlink(dest) && errno != ENOENT) - die("failed to unlink %s\n", dest); - if (!option_no_hardlinks) { - if (!link(src, dest)) - continue; - if (option_local) - die("failed to create link %s\n", dest); - option_no_hardlinks = 1; - } - if (copy_file(dest, src, 0666)) - die("failed to copy file to %s\n", dest); - } - closedir(dir); -} - -static const struct ref *clone_local(const char *src_repo, - const char *dest_repo) -{ - const struct ref *ret; - char src[PATH_MAX]; - char dest[PATH_MAX]; - struct remote *remote; - struct transport *transport; - - if (option_shared) - add_to_alternates_file(src_repo); - else { - snprintf(src, PATH_MAX, "%s/objects", src_repo); - snprintf(dest, PATH_MAX, "%s/objects", dest_repo); - copy_or_link_directory(src, 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; -pid_t junk_pid; - -static void remove_junk(void) -{ - struct strbuf sb; - if (getpid() != junk_pid) - return; - strbuf_init(&sb, 0); - 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(); - signal(SIGINT, SIG_DFL); - raise(signo); -} - -static const struct ref *locate_head(const struct ref *refs, - const struct ref *mapped_refs, - const struct ref **remote_head_p) -{ - const struct ref *remote_head = NULL; - const struct ref *remote_master = NULL; - const struct ref *r; - for (r = refs; r; r = r->next) - if (!strcmp(r->name, "HEAD")) - remote_head = r; - - for (r = mapped_refs; r; r = r->next) - if (!strcmp(r->name, "refs/heads/master")) - remote_master = r; - - if (remote_head_p) - *remote_head_p = remote_head; - - /* If there's no HEAD value at all, never mind. */ - if (!remote_head) - return NULL; - - /* If refs/heads/master could be right, it is. */ - if (remote_master && !hashcmp(remote_master->old_sha1, - remote_head->old_sha1)) - return remote_master; - - /* Look for another ref that points there */ - for (r = mapped_refs; r; r = r->next) - if (r != remote_head && - !hashcmp(r->old_sha1, remote_head->old_sha1)) - return r; - - /* Nothing is the same */ - return NULL; -} - -static struct ref *write_remote_refs(const struct ref *refs, - struct refspec *refspec, const char *reflog) -{ - struct ref *local_refs = NULL; - struct ref **tail = &local_refs; - struct ref *r; - - get_fetch_map(refs, refspec, &tail, 0); - get_fetch_map(refs, tag_refspec, &tail, 0); - - for (r = local_refs; r; r = r->next) - update_ref(reflog, - r->peer_ref->name, r->old_sha1, NULL, 0, DIE_ON_ERR); - return local_refs; -} - -int cmd_clone(int argc, const char **argv, const char *prefix) -{ - int use_local_hardlinks = 1; - int use_separate_remote = 1; - int is_bundle = 0; - struct stat buf; - const char *repo_name, *repo, *work_tree, *git_dir; - char *path, *dir; - const struct ref *refs, *head_points_at, *remote_head, *mapped_refs; - char branch_top[256], key[256], value[256]; - struct strbuf reflog_msg; - - struct refspec refspec; - - junk_pid = getpid(); - - argc = parse_options(argc, argv, builtin_clone_options, - builtin_clone_usage, 0); - - if (argc == 0) - die("You must specify a repository to clone."); - - if (option_no_hardlinks) - use_local_hardlinks = 0; - - if (option_bare) { - if (option_origin) - die("--bare and --origin %s options are incompatible.", - option_origin); - option_no_checkout = 1; - use_separate_remote = 0; - } - - if (!option_origin) - option_origin = "origin"; - - repo_name = argv[0]; - - path = get_repo_path(repo_name, &is_bundle); - if (path) - repo = path; - 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); - - if (!stat(dir, &buf)) - die("destination directory '%s' already exists.", dir); - - strbuf_init(&reflog_msg, 0); - 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 (mkdir(work_tree, 0755)) - die("could not create work tree dir '%s'.", work_tree); - set_git_work_tree(work_tree); - } - junk_git_dir = git_dir; - atexit(remove_junk); - signal(SIGINT, remove_junk_on_signal); - - setenv(CONFIG_ENVIRONMENT, xstrdup(mkpath("%s/config", git_dir)), 1); - - set_git_dir(make_absolute_path(git_dir)); - - fprintf(stderr, "Initialize %s\n", git_dir); - init_db(option_template, option_quiet ? INIT_DB_QUIET : 0); - - if (option_reference) - setup_reference(git_dir); - - git_config(git_default_config, NULL); - - if (option_bare) { - strcpy(branch_top, "refs/heads/"); - - git_config_set("core.bare", "true"); - } else { - snprintf(branch_top, sizeof(branch_top), - "refs/remotes/%s/", option_origin); - - /* Configure the remote */ - snprintf(key, sizeof(key), "remote.%s.url", option_origin); - git_config_set(key, repo); - - snprintf(key, sizeof(key), "remote.%s.fetch", option_origin); - snprintf(value, sizeof(value), - "+refs/heads/*:%s*", branch_top); - git_config_set_multivar(key, value, "^$", 0); - } - - refspec.force = 0; - refspec.pattern = 1; - refspec.src = "refs/heads/"; - refspec.dst = branch_top; - - if (path && !is_bundle) - refs = clone_local(path, git_dir); - else { - struct remote *remote = remote_get(argv[0]); - struct transport *transport = transport_get(remote, argv[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; - - refs = transport_get_remote_refs(transport); - transport_fetch_refs(transport, refs); - } - - clear_extra_refs(); - - mapped_refs = write_remote_refs(refs, &refspec, reflog_msg.buf); - - head_points_at = locate_head(refs, mapped_refs, &remote_head); - - if (head_points_at) { - /* Local default branch link */ - create_symref("HEAD", head_points_at->name, NULL); - - if (!option_bare) { - struct strbuf head_ref; - const char *head = head_points_at->name; - - if (!prefixcmp(head, "refs/heads/")) - head += 11; - - /* Set up the initial local branch */ - - /* Local branch initial value */ - update_ref(reflog_msg.buf, "HEAD", - head_points_at->old_sha1, - NULL, 0, DIE_ON_ERR); - - strbuf_init(&head_ref, 0); - strbuf_addstr(&head_ref, branch_top); - strbuf_addstr(&head_ref, "HEAD"); - - /* Remote branch link */ - create_symref(head_ref.buf, - head_points_at->peer_ref->name, - reflog_msg.buf); - - snprintf(key, sizeof(key), "branch.%s.remote", head); - git_config_set(key, option_origin); - snprintf(key, sizeof(key), "branch.%s.merge", head); - git_config_set(key, 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); - } 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 (!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(remote_head->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"); - } - - strbuf_release(&reflog_msg); - junk_pid = 0; - return 0; -} |