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https://github.com/git/git
synced 2024-08-27 19:49:21 +00:00
![Junio C Hamano](/assets/img/avatar_default.png)
lookup_commit_reference() and friends have been updated to find in-core object for a specific in-core repository instance. * sb/object-store-lookup: (32 commits) commit.c: allow lookup_commit_reference to handle arbitrary repositories commit.c: allow lookup_commit_reference_gently to handle arbitrary repositories tag.c: allow deref_tag to handle arbitrary repositories object.c: allow parse_object to handle arbitrary repositories object.c: allow parse_object_buffer to handle arbitrary repositories commit.c: allow get_cached_commit_buffer to handle arbitrary repositories commit.c: allow set_commit_buffer to handle arbitrary repositories commit.c: migrate the commit buffer to the parsed object store commit-slabs: remove realloc counter outside of slab struct commit.c: allow parse_commit_buffer to handle arbitrary repositories tag: allow parse_tag_buffer to handle arbitrary repositories tag: allow lookup_tag to handle arbitrary repositories commit: allow lookup_commit to handle arbitrary repositories tree: allow lookup_tree to handle arbitrary repositories blob: allow lookup_blob to handle arbitrary repositories object: allow lookup_object to handle arbitrary repositories object: allow object_as_type to handle arbitrary repositories tag: add repository argument to deref_tag tag: add repository argument to parse_tag_buffer tag: add repository argument to lookup_tag ...
1239 lines
34 KiB
C
1239 lines
34 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 "config.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 "refspec.h"
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#include "object-store.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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#include "packfile.h"
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#include "list-objects-filter-options.h"
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#include "object-store.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_no_tags;
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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 struct list_objects_filter_options filter_options;
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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, "no-tags", &option_no_tags,
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N_("don't clone any tags, and make later fetches not to follow them")),
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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_PARSE_LIST_OBJECTS_FILTER(&filter_options),
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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 = xfopen(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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|
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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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|
|
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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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|
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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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}
|
|
|
|
/* Files that cannot be copied bit-for-bit... */
|
|
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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}
|
|
|
|
if (unlink(dest->buf) && errno != ENOENT)
|
|
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)
|
|
{
|
|
if (option_shared) {
|
|
struct strbuf alt = STRBUF_INIT;
|
|
get_common_dir(&alt, src_repo);
|
|
strbuf_addstr(&alt, "/objects");
|
|
add_to_alternates_file(alt.buf);
|
|
strbuf_release(&alt);
|
|
} else {
|
|
struct strbuf src = STRBUF_INIT;
|
|
struct strbuf dest = STRBUF_INIT;
|
|
get_common_dir(&src, src_repo);
|
|
get_common_dir(&dest, dest_repo);
|
|
strbuf_addstr(&src, "/objects");
|
|
strbuf_addstr(&dest, "/objects");
|
|
copy_or_link_directory(&src, &dest, src_repo, src.len);
|
|
strbuf_release(&src);
|
|
strbuf_release(&dest);
|
|
}
|
|
|
|
if (0 <= option_verbosity)
|
|
fprintf(stderr, _("done.\n"));
|
|
}
|
|
|
|
static const char *junk_work_tree;
|
|
static int junk_work_tree_flags;
|
|
static const char *junk_git_dir;
|
|
static int junk_git_dir_flags;
|
|
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, junk_git_dir_flags);
|
|
strbuf_reset(&sb);
|
|
}
|
|
if (junk_work_tree) {
|
|
strbuf_addstr(&sb, junk_work_tree);
|
|
remove_dir_recursively(&sb, junk_work_tree_flags);
|
|
}
|
|
strbuf_release(&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_item *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 && !option_no_tags)
|
|
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,
|
|
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, NULL, 0,
|
|
UPDATE_REFS_DIE_ON_ERR);
|
|
}
|
|
}
|
|
|
|
static int iterate_ref_map(void *cb_data, struct object_id *oid)
|
|
{
|
|
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;
|
|
|
|
oidcpy(oid, &ref->old_oid);
|
|
*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 && !option_no_tags)
|
|
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, 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(the_repository,
|
|
&our->old_oid);
|
|
/* --branch specifies a non-branch (i.e. tags), detach HEAD */
|
|
update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
|
|
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, NULL, REF_NO_DEREF,
|
|
UPDATE_REFS_DIE_ON_ERR);
|
|
}
|
|
}
|
|
|
|
static int checkout(int submodule_progress)
|
|
{
|
|
struct object_id oid;
|
|
char *head;
|
|
struct lock_file lock_file = LOCK_INIT;
|
|
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, 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();
|
|
|
|
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);
|
|
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");
|
|
|
|
if (option_verbosity < 0)
|
|
argv_array_push(&args, "--quiet");
|
|
|
|
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",
|
|
CONFIG_REGEX_NONE, 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))
|
|
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);
|
|
}
|
|
|
|
static int dir_exists(const char *path)
|
|
{
|
|
struct stat sb;
|
|
return !stat(path, &sb);
|
|
}
|
|
|
|
int cmd_clone(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int is_bundle = 0, is_local;
|
|
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_item refspec;
|
|
|
|
fetch_if_missing = 0;
|
|
|
|
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 = dir_exists(dir);
|
|
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 && dir_exists(work_tree))
|
|
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)
|
|
junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
|
|
else if (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);
|
|
}
|
|
|
|
if (real_git_dir) {
|
|
if (dir_exists(real_git_dir))
|
|
junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
|
|
junk_git_dir = real_git_dir;
|
|
} else {
|
|
if (dest_exists)
|
|
junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
|
|
junk_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_no_tags) {
|
|
strbuf_addf(&key, "remote.%s.tagOpt", option_origin);
|
|
git_config_set(key.buf, "--no-tags");
|
|
strbuf_reset(&key);
|
|
}
|
|
|
|
if (option_required_reference.nr || option_optional_reference.nr)
|
|
setup_reference();
|
|
|
|
refspec_item_init_or_die(&refspec, value.buf, REFSPEC_FETCH);
|
|
|
|
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 (filter_options.choice)
|
|
warning(_("--filter 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;
|
|
|
|
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 (filter_options.choice) {
|
|
transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
|
|
filter_options.filter_spec);
|
|
transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
|
|
}
|
|
|
|
if (transport->smart_options && !deepen && !filter_options.choice)
|
|
transport->smart_options->check_self_contained_and_connected = 1;
|
|
|
|
refs = transport_get_remote_refs(transport, NULL);
|
|
|
|
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, NULL);
|
|
|
|
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 (filter_options.choice)
|
|
partial_clone_register("origin", &filter_options);
|
|
|
|
if (is_local)
|
|
clone_local(path, git_dir);
|
|
else if (refs && complete_refs_before_fetch)
|
|
transport_fetch_refs(transport, mapped_refs, NULL);
|
|
|
|
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(the_repository->objects);
|
|
dissociate_from_references();
|
|
}
|
|
|
|
junk_mode = JUNK_LEAVE_REPO;
|
|
fetch_if_missing = 1;
|
|
err = checkout(submodule_progress);
|
|
|
|
strbuf_release(&reflog_msg);
|
|
strbuf_release(&branch_top);
|
|
strbuf_release(&key);
|
|
strbuf_release(&value);
|
|
junk_mode = JUNK_LEAVE_ALL;
|
|
|
|
refspec_item_clear(&refspec);
|
|
return err;
|
|
}
|