mirror of
https://github.com/git/git.git
synced 2024-10-29 21:37:53 +01:00
a93dcb0a56
"what URL do we want to update this submodule?" and "are we interested in this submodule?" are split into two distinct concepts, and then the way used to express the latter got extended, paving a way to make it easier to manage a project with many submodules and make it possible to later extend use of multiple worktrees for a project with submodules. * bw/submodule-is-active: submodule add: respect submodule.active and submodule.<name>.active submodule--helper init: set submodule.<name>.active clone: teach --recurse-submodules to optionally take a pathspec submodule init: initialize active submodules submodule: decouple url and submodule interest submodule--helper clone: check for configured submodules using helper submodule sync: use submodule--helper is-active submodule sync: skip work for inactive submodules submodule status: use submodule--helper is-active submodule--helper: add is-active subcommand
1188 lines
33 KiB
C
1188 lines
33 KiB
C
/*
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* Builtin "git clone"
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*
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* Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
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* 2008 Daniel Barkalow <barkalow@iabervon.org>
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* Based on git-commit.sh by Junio C Hamano and Linus Torvalds
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*
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* Clone a repository into a different directory that does not yet exist.
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*/
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#include "builtin.h"
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#include "lockfile.h"
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#include "parse-options.h"
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#include "fetch-pack.h"
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#include "refs.h"
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#include "tree.h"
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#include "tree-walk.h"
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#include "unpack-trees.h"
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#include "transport.h"
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#include "strbuf.h"
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#include "dir.h"
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#include "sigchain.h"
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#include "branch.h"
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#include "remote.h"
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#include "run-command.h"
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#include "connected.h"
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/*
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* Overall FIXMEs:
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* - respect DB_ENVIRONMENT for .git/objects.
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*
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* Implementation notes:
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* - dropping use-separate-remote and no-separate-remote compatibility
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*
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*/
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static const char * const builtin_clone_usage[] = {
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N_("git clone [<options>] [--] <repo> [<dir>]"),
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NULL
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};
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static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
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static int option_local = -1, option_no_hardlinks, option_shared;
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static int option_shallow_submodules;
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static int deepen;
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static char *option_template, *option_depth, *option_since;
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static char *option_origin = NULL;
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static char *option_branch = NULL;
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static struct string_list option_not = STRING_LIST_INIT_NODUP;
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static const char *real_git_dir;
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static char *option_upload_pack = "git-upload-pack";
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static int option_verbosity;
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static int option_progress = -1;
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static enum transport_family family;
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static struct string_list option_config = STRING_LIST_INIT_NODUP;
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static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
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static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
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static int option_dissociate;
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static int max_jobs = -1;
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static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
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static int recurse_submodules_cb(const struct option *opt,
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const char *arg, int unset)
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{
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if (unset)
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string_list_clear((struct string_list *)opt->value, 0);
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else if (arg)
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string_list_append((struct string_list *)opt->value, arg);
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else
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string_list_append((struct string_list *)opt->value,
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(const char *)opt->defval);
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return 0;
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}
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static struct option builtin_clone_options[] = {
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OPT__VERBOSITY(&option_verbosity),
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OPT_BOOL(0, "progress", &option_progress,
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N_("force progress reporting")),
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OPT_BOOL('n', "no-checkout", &option_no_checkout,
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N_("don't create a checkout")),
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OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
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OPT_HIDDEN_BOOL(0, "naked", &option_bare,
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N_("create a bare repository")),
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OPT_BOOL(0, "mirror", &option_mirror,
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N_("create a mirror repository (implies bare)")),
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OPT_BOOL('l', "local", &option_local,
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N_("to clone from a local repository")),
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OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
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N_("don't use local hardlinks, always copy")),
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OPT_BOOL('s', "shared", &option_shared,
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N_("setup as shared repository")),
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{ OPTION_CALLBACK, 0, "recursive", &option_recurse_submodules,
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N_("pathspec"), N_("initialize submodules in the clone"),
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PARSE_OPT_OPTARG | PARSE_OPT_HIDDEN, recurse_submodules_cb,
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(intptr_t)"." },
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{ OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules,
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N_("pathspec"), N_("initialize submodules in the clone"),
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PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." },
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OPT_INTEGER('j', "jobs", &max_jobs,
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N_("number of submodules cloned in parallel")),
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OPT_STRING(0, "template", &option_template, N_("template-directory"),
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N_("directory from which templates will be used")),
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OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
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N_("reference repository")),
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OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
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N_("repo"), N_("reference repository")),
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OPT_BOOL(0, "dissociate", &option_dissociate,
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N_("use --reference only while cloning")),
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OPT_STRING('o', "origin", &option_origin, N_("name"),
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N_("use <name> instead of 'origin' to track upstream")),
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OPT_STRING('b', "branch", &option_branch, N_("branch"),
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N_("checkout <branch> instead of the remote's HEAD")),
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OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
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N_("path to git-upload-pack on the remote")),
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OPT_STRING(0, "depth", &option_depth, N_("depth"),
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N_("create a shallow clone of that depth")),
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OPT_STRING(0, "shallow-since", &option_since, N_("time"),
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N_("create a shallow clone since a specific time")),
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OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
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N_("deepen history of shallow clone, excluding rev")),
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OPT_BOOL(0, "single-branch", &option_single_branch,
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N_("clone only one branch, HEAD or --branch")),
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OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
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N_("any cloned submodules will be shallow")),
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OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
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N_("separate git dir from working tree")),
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OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
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N_("set config inside the new repository")),
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OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
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TRANSPORT_FAMILY_IPV4),
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OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
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TRANSPORT_FAMILY_IPV6),
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OPT_END()
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};
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static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
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{
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static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
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static char *bundle_suffix[] = { ".bundle", "" };
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size_t baselen = path->len;
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struct stat st;
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int i;
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for (i = 0; i < ARRAY_SIZE(suffix); i++) {
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strbuf_setlen(path, baselen);
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strbuf_addstr(path, suffix[i]);
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if (stat(path->buf, &st))
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continue;
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if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) {
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*is_bundle = 0;
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return path->buf;
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} else if (S_ISREG(st.st_mode) && st.st_size > 8) {
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/* Is it a "gitfile"? */
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char signature[8];
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const char *dst;
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int len, fd = open(path->buf, O_RDONLY);
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if (fd < 0)
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continue;
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len = read_in_full(fd, signature, 8);
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close(fd);
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if (len != 8 || strncmp(signature, "gitdir: ", 8))
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continue;
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dst = read_gitfile(path->buf);
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if (dst) {
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*is_bundle = 0;
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return dst;
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}
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}
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}
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for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
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strbuf_setlen(path, baselen);
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strbuf_addstr(path, bundle_suffix[i]);
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if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) {
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*is_bundle = 1;
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return path->buf;
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}
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}
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return NULL;
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}
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static char *get_repo_path(const char *repo, int *is_bundle)
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{
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struct strbuf path = STRBUF_INIT;
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const char *raw;
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char *canon;
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strbuf_addstr(&path, repo);
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raw = get_repo_path_1(&path, is_bundle);
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canon = raw ? absolute_pathdup(raw) : NULL;
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strbuf_release(&path);
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return canon;
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}
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static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
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{
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const char *end = repo + strlen(repo), *start, *ptr;
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size_t len;
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char *dir;
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/*
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* Skip scheme.
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*/
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start = strstr(repo, "://");
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if (start == NULL)
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start = repo;
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else
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start += 3;
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/*
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* Skip authentication data. The stripping does happen
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* greedily, such that we strip up to the last '@' inside
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* the host part.
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*/
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for (ptr = start; ptr < end && !is_dir_sep(*ptr); ptr++) {
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if (*ptr == '@')
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start = ptr + 1;
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}
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/*
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* Strip trailing spaces, slashes and /.git
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*/
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while (start < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
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end--;
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if (end - start > 5 && is_dir_sep(end[-5]) &&
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!strncmp(end - 4, ".git", 4)) {
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end -= 5;
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while (start < end && is_dir_sep(end[-1]))
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end--;
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}
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/*
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* Strip trailing port number if we've got only a
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* hostname (that is, there is no dir separator but a
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* colon). This check is required such that we do not
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* strip URI's like '/foo/bar:2222.git', which should
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* result in a dir '2222' being guessed due to backwards
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* compatibility.
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*/
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if (memchr(start, '/', end - start) == NULL
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&& memchr(start, ':', end - start) != NULL) {
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ptr = end;
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while (start < ptr && isdigit(ptr[-1]) && ptr[-1] != ':')
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ptr--;
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if (start < ptr && ptr[-1] == ':')
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end = ptr - 1;
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}
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/*
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* Find last component. To remain backwards compatible we
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* also regard colons as path separators, such that
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* cloning a repository 'foo:bar.git' would result in a
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* directory 'bar' being guessed.
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*/
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ptr = end;
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while (start < ptr && !is_dir_sep(ptr[-1]) && ptr[-1] != ':')
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ptr--;
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start = ptr;
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/*
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* Strip .{bundle,git}.
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*/
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len = end - start;
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strip_suffix_mem(start, &len, is_bundle ? ".bundle" : ".git");
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if (!len || (len == 1 && *start == '/'))
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die(_("No directory name could be guessed.\n"
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"Please specify a directory on the command line"));
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if (is_bare)
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dir = xstrfmt("%.*s.git", (int)len, start);
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else
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dir = xstrndup(start, len);
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/*
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* Replace sequences of 'control' characters and whitespace
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* with one ascii space, remove leading and trailing spaces.
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*/
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if (*dir) {
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char *out = dir;
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int prev_space = 1 /* strip leading whitespace */;
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for (end = dir; *end; ++end) {
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char ch = *end;
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if ((unsigned char)ch < '\x20')
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ch = '\x20';
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if (isspace(ch)) {
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if (prev_space)
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continue;
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prev_space = 1;
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} else
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prev_space = 0;
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*out++ = ch;
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}
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*out = '\0';
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if (out > dir && prev_space)
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out[-1] = '\0';
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}
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return dir;
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}
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static void strip_trailing_slashes(char *dir)
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{
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char *end = dir + strlen(dir);
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while (dir < end - 1 && is_dir_sep(end[-1]))
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end--;
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*end = '\0';
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}
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static int add_one_reference(struct string_list_item *item, void *cb_data)
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{
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struct strbuf err = STRBUF_INIT;
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int *required = cb_data;
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char *ref_git = compute_alternate_path(item->string, &err);
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if (!ref_git) {
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if (*required)
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die("%s", err.buf);
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else
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fprintf(stderr,
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_("info: Could not add alternate for '%s': %s\n"),
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item->string, err.buf);
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} else {
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struct strbuf sb = STRBUF_INIT;
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strbuf_addf(&sb, "%s/objects", ref_git);
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add_to_alternates_file(sb.buf);
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strbuf_release(&sb);
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}
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strbuf_release(&err);
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free(ref_git);
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return 0;
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}
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static void setup_reference(void)
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{
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int required = 1;
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for_each_string_list(&option_required_reference,
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add_one_reference, &required);
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required = 0;
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for_each_string_list(&option_optional_reference,
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add_one_reference, &required);
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}
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static void copy_alternates(struct strbuf *src, struct strbuf *dst,
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const char *src_repo)
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{
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/*
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* Read from the source objects/info/alternates file
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* and copy the entries to corresponding file in the
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* destination repository with add_to_alternates_file().
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* Both src and dst have "$path/objects/info/alternates".
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*
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* Instead of copying bit-for-bit from the original,
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* we need to append to existing one so that the already
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* created entry via "clone -s" is not lost, and also
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* to turn entries with paths relative to the original
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* absolute, so that they can be used in the new repository.
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*/
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FILE *in = fopen(src->buf, "r");
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struct strbuf line = STRBUF_INIT;
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while (strbuf_getline(&line, in) != EOF) {
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char *abs_path;
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if (!line.len || line.buf[0] == '#')
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continue;
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if (is_absolute_path(line.buf)) {
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add_to_alternates_file(line.buf);
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continue;
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}
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abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
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if (!normalize_path_copy(abs_path, abs_path))
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add_to_alternates_file(abs_path);
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else
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warning("skipping invalid relative alternate: %s/%s",
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src_repo, line.buf);
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free(abs_path);
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}
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strbuf_release(&line);
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fclose(in);
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}
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static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
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const char *src_repo, int src_baselen)
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{
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struct dirent *de;
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struct stat buf;
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int src_len, dest_len;
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DIR *dir;
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dir = opendir(src->buf);
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if (!dir)
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die_errno(_("failed to open '%s'"), src->buf);
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if (mkdir(dest->buf, 0777)) {
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if (errno != EEXIST)
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die_errno(_("failed to create directory '%s'"), dest->buf);
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else if (stat(dest->buf, &buf))
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die_errno(_("failed to stat '%s'"), dest->buf);
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else if (!S_ISDIR(buf.st_mode))
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die(_("%s exists and is not a directory"), dest->buf);
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}
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strbuf_addch(src, '/');
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src_len = src->len;
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strbuf_addch(dest, '/');
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dest_len = dest->len;
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while ((de = readdir(dir)) != NULL) {
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strbuf_setlen(src, src_len);
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strbuf_addstr(src, de->d_name);
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strbuf_setlen(dest, dest_len);
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strbuf_addstr(dest, de->d_name);
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if (stat(src->buf, &buf)) {
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warning (_("failed to stat %s\n"), src->buf);
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continue;
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}
|
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if (S_ISDIR(buf.st_mode)) {
|
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if (de->d_name[0] != '.')
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copy_or_link_directory(src, dest,
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src_repo, src_baselen);
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continue;
|
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}
|
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|
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/* Files that cannot be copied bit-for-bit... */
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if (!strcmp(src->buf + src_baselen, "/info/alternates")) {
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copy_alternates(src, dest, src_repo);
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continue;
|
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}
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|
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if (unlink(dest->buf) && errno != ENOENT)
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die_errno(_("failed to unlink '%s'"), dest->buf);
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if (!option_no_hardlinks) {
|
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if (!link(src->buf, dest->buf))
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continue;
|
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if (option_local > 0)
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die_errno(_("failed to create link '%s'"), dest->buf);
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option_no_hardlinks = 1;
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}
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if (copy_file_with_time(dest->buf, src->buf, 0666))
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die_errno(_("failed to copy file to '%s'"), dest->buf);
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}
|
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closedir(dir);
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}
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|
|
static void clone_local(const char *src_repo, const char *dest_repo)
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{
|
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if (option_shared) {
|
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struct strbuf alt = STRBUF_INIT;
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strbuf_addf(&alt, "%s/objects", src_repo);
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add_to_alternates_file(alt.buf);
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strbuf_release(&alt);
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} else {
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struct strbuf src = STRBUF_INIT;
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struct strbuf dest = STRBUF_INIT;
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get_common_dir(&src, src_repo);
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get_common_dir(&dest, dest_repo);
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strbuf_addstr(&src, "/objects");
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strbuf_addstr(&dest, "/objects");
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copy_or_link_directory(&src, &dest, src_repo, src.len);
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strbuf_release(&src);
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strbuf_release(&dest);
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}
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|
|
if (0 <= option_verbosity)
|
|
fprintf(stderr, _("done.\n"));
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}
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|
|
static const char *junk_work_tree;
|
|
static const char *junk_git_dir;
|
|
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 (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;
|
|
|
|
struct ref_transaction *t;
|
|
struct strbuf err = STRBUF_INIT;
|
|
|
|
t = ref_transaction_begin(&err);
|
|
if (!t)
|
|
die("%s", err.buf);
|
|
|
|
for (r = local_refs; r; r = r->next) {
|
|
if (!r->peer_ref)
|
|
continue;
|
|
if (ref_transaction_create(t, r->peer_ref->name, r->old_oid.hash,
|
|
0, NULL, &err))
|
|
die("%s", err.buf);
|
|
}
|
|
|
|
if (initial_ref_transaction_commit(t, &err))
|
|
die("%s", err.buf);
|
|
|
|
strbuf_release(&err);
|
|
ref_transaction_free(t);
|
|
}
|
|
|
|
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_object_file(&ref->old_oid))
|
|
continue;
|
|
update_ref(msg, ref->name, ref->old_oid.hash,
|
|
NULL, 0, UPDATE_REFS_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_oid.hash);
|
|
*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) {
|
|
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 (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");
|
|
if (create_symref(head_ref.buf,
|
|
remote_head_points_at->peer_ref->name,
|
|
msg) < 0)
|
|
die(_("unable to update %s"), head_ref.buf);
|
|
strbuf_release(&head_ref);
|
|
}
|
|
}
|
|
|
|
static void update_head(const struct ref *our, const struct ref *remote,
|
|
const char *msg)
|
|
{
|
|
const char *head;
|
|
if (our && skip_prefix(our->name, "refs/heads/", &head)) {
|
|
/* Local default branch link */
|
|
if (create_symref("HEAD", our->name, NULL) < 0)
|
|
die(_("unable to update HEAD"));
|
|
if (!option_bare) {
|
|
update_ref(msg, "HEAD", our->old_oid.hash, NULL, 0,
|
|
UPDATE_REFS_DIE_ON_ERR);
|
|
install_branch_config(0, head, option_origin, our->name);
|
|
}
|
|
} else if (our) {
|
|
struct commit *c = lookup_commit_reference(our->old_oid.hash);
|
|
/* --branch specifies a non-branch (i.e. tags), detach HEAD */
|
|
update_ref(msg, "HEAD", c->object.oid.hash,
|
|
NULL, REF_NODEREF, UPDATE_REFS_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_oid.hash,
|
|
NULL, REF_NODEREF, UPDATE_REFS_DIE_ON_ERR);
|
|
}
|
|
}
|
|
|
|
static int checkout(int submodule_progress)
|
|
{
|
|
struct object_id oid;
|
|
char *head;
|
|
struct lock_file *lock_file;
|
|
struct unpack_trees_options opts;
|
|
struct tree *tree;
|
|
struct tree_desc t;
|
|
int err = 0;
|
|
|
|
if (option_no_checkout)
|
|
return 0;
|
|
|
|
head = resolve_refdup("HEAD", RESOLVE_REF_READING, oid.hash, 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(oid_to_hex(&oid));
|
|
} 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));
|
|
hold_locked_index(lock_file, LOCK_DIE_ON_ERROR);
|
|
|
|
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(oid.hash);
|
|
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_locked_index(&the_index, lock_file, COMMIT_LOCK))
|
|
die(_("unable to write new index file"));
|
|
|
|
err |= run_hook_le(NULL, "post-checkout", sha1_to_hex(null_sha1),
|
|
oid_to_hex(&oid), "1", NULL);
|
|
|
|
if (!err && (option_recurse_submodules.nr > 0)) {
|
|
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;
|
|
}
|
|
|
|
static int write_one_config(const char *key, const char *value, void *data)
|
|
{
|
|
return git_config_set_multivar_gently(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 (starts_with(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) {
|
|
const char *head = remote_head_points_at->name;
|
|
if (!skip_prefix(head, "refs/heads/", &head))
|
|
die("BUG: remote HEAD points at non-head?");
|
|
|
|
strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
|
|
branch_top->buf, head);
|
|
}
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
static void dissociate_from_references(void)
|
|
{
|
|
static const char* argv[] = { "repack", "-a", "-d", NULL };
|
|
char *alternates = git_pathdup("objects/info/alternates");
|
|
|
|
if (!access(alternates, F_OK)) {
|
|
if (run_command_v_opt(argv, RUN_GIT_CMD|RUN_COMMAND_NO_STDIN))
|
|
die(_("cannot repack to clean up"));
|
|
if (unlink(alternates) && errno != ENOENT)
|
|
die_errno(_("cannot unlink temporary alternates file"));
|
|
}
|
|
free(alternates);
|
|
}
|
|
|
|
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;
|
|
int submodule_progress;
|
|
|
|
struct refspec *refspec;
|
|
const char *fetch_pattern;
|
|
|
|
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_depth || option_since || option_not.nr)
|
|
deepen = 1;
|
|
if (option_single_branch == -1)
|
|
option_single_branch = deepen ? 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 = absolute_pathdup(repo_name);
|
|
else if (!strchr(repo_name, ':'))
|
|
die(_("repository '%s' does not exist"), repo_name);
|
|
else
|
|
repo = repo_name;
|
|
|
|
/* 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);
|
|
}
|
|
|
|
atexit(remove_junk);
|
|
sigchain_push_common(remove_junk_on_signal);
|
|
|
|
if (!option_bare) {
|
|
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);
|
|
junk_work_tree = work_tree;
|
|
set_git_work_tree(work_tree);
|
|
}
|
|
|
|
junk_git_dir = real_git_dir ? real_git_dir : git_dir;
|
|
if (safe_create_leading_directories_const(git_dir) < 0)
|
|
die(_("could not create leading directories of '%s'"), 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);
|
|
}
|
|
|
|
if (option_recurse_submodules.nr > 0) {
|
|
struct string_list_item *item;
|
|
struct strbuf sb = STRBUF_INIT;
|
|
|
|
/* remove duplicates */
|
|
string_list_sort(&option_recurse_submodules);
|
|
string_list_remove_duplicates(&option_recurse_submodules, 0);
|
|
|
|
/*
|
|
* NEEDSWORK: In a multi-working-tree world, this needs to be
|
|
* set in the per-worktree config.
|
|
*/
|
|
for_each_string_list_item(item, &option_recurse_submodules) {
|
|
strbuf_addf(&sb, "submodule.active=%s",
|
|
item->string);
|
|
string_list_append(&option_config,
|
|
strbuf_detach(&sb, NULL));
|
|
}
|
|
|
|
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)
|
|
git_dir = real_git_dir;
|
|
|
|
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_required_reference.nr || option_optional_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_set_verbosity(transport, option_verbosity, option_progress);
|
|
transport->family = family;
|
|
|
|
path = get_repo_path(remote->url[0], &is_bundle);
|
|
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 (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"));
|
|
is_local = 0;
|
|
}
|
|
}
|
|
if (option_local > 0 && !is_local)
|
|
warning(_("--local is ignored"));
|
|
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_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");
|
|
|
|
if (option_upload_pack)
|
|
transport_set_option(transport, TRANS_OPT_UPLOADPACK,
|
|
option_upload_pack);
|
|
|
|
if (transport->smart_options && !deepen)
|
|
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_oid(&ref->old_oid)) {
|
|
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);
|
|
|
|
/*
|
|
* 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);
|
|
|
|
if (option_dissociate) {
|
|
close_all_packs();
|
|
dissociate_from_references();
|
|
}
|
|
|
|
junk_mode = JUNK_LEAVE_REPO;
|
|
err = checkout(submodule_progress);
|
|
|
|
strbuf_release(&reflog_msg);
|
|
strbuf_release(&branch_top);
|
|
strbuf_release(&key);
|
|
strbuf_release(&value);
|
|
junk_mode = JUNK_LEAVE_ALL;
|
|
|
|
free(refspec);
|
|
return err;
|
|
}
|