summaryrefslogtreecommitdiff
path: root/builtin-clone.c
diff options
context:
space:
mode:
Diffstat (limited to 'builtin-clone.c')
-rw-r--r--builtin-clone.c664
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;
-}