+++ /dev/null
-/*
- * Copyright (C) the libgit2 contributors. All rights reserved.
- *
- * This file is part of libgit2, distributed under the GNU GPL v2 with
- * a Linking Exception. For full terms see the included COPYING file.
- */
-
-#include "clone.h"
-
-#include "git2/clone.h"
-#include "git2/remote.h"
-#include "git2/revparse.h"
-#include "git2/branch.h"
-#include "git2/config.h"
-#include "git2/checkout.h"
-#include "git2/commit.h"
-#include "git2/tree.h"
-
-#include "remote.h"
-#include "futils.h"
-#include "refs.h"
-#include "fs_path.h"
-#include "repository.h"
-#include "odb.h"
-
-static int clone_local_into(git_repository *repo, git_remote *remote, const git_fetch_options *fetch_opts, const git_checkout_options *co_opts, const char *branch, int link);
-
-static int create_branch(
- git_reference **branch,
- git_repository *repo,
- const git_oid *target,
- const char *name,
- const char *log_message)
-{
- git_commit *head_obj = NULL;
- git_reference *branch_ref = NULL;
- git_str refname = GIT_STR_INIT;
- int error;
-
- /* Find the target commit */
- if ((error = git_commit_lookup(&head_obj, repo, target)) < 0)
- return error;
-
- /* Create the new branch */
- if ((error = git_str_printf(&refname, GIT_REFS_HEADS_DIR "%s", name)) < 0)
- return error;
-
- error = git_reference_create(&branch_ref, repo, git_str_cstr(&refname), target, 0, log_message);
- git_str_dispose(&refname);
- git_commit_free(head_obj);
-
- if (!error)
- *branch = branch_ref;
- else
- git_reference_free(branch_ref);
-
- return error;
-}
-
-static int setup_tracking_config(
- git_repository *repo,
- const char *branch_name,
- const char *remote_name,
- const char *merge_target)
-{
- git_config *cfg;
- git_str remote_key = GIT_STR_INIT, merge_key = GIT_STR_INIT;
- int error = -1;
-
- if (git_repository_config__weakptr(&cfg, repo) < 0)
- return -1;
-
- if (git_str_printf(&remote_key, "branch.%s.remote", branch_name) < 0)
- goto cleanup;
-
- if (git_str_printf(&merge_key, "branch.%s.merge", branch_name) < 0)
- goto cleanup;
-
- if (git_config_set_string(cfg, git_str_cstr(&remote_key), remote_name) < 0)
- goto cleanup;
-
- if (git_config_set_string(cfg, git_str_cstr(&merge_key), merge_target) < 0)
- goto cleanup;
-
- error = 0;
-
-cleanup:
- git_str_dispose(&remote_key);
- git_str_dispose(&merge_key);
- return error;
-}
-
-static int create_tracking_branch(
- git_reference **branch,
- git_repository *repo,
- const git_oid *target,
- const char *branch_name,
- const char *log_message)
-{
- int error;
-
- if ((error = create_branch(branch, repo, target, branch_name, log_message)) < 0)
- return error;
-
- return setup_tracking_config(
- repo,
- branch_name,
- GIT_REMOTE_ORIGIN,
- git_reference_name(*branch));
-}
-
-static int update_head_to_new_branch(
- git_repository *repo,
- const git_oid *target,
- const char *name,
- const char *reflog_message)
-{
- git_reference *tracking_branch = NULL;
- int error;
-
- if (!git__prefixcmp(name, GIT_REFS_HEADS_DIR))
- name += strlen(GIT_REFS_HEADS_DIR);
-
- error = create_tracking_branch(&tracking_branch, repo, target, name,
- reflog_message);
-
- if (!error)
- error = git_repository_set_head(
- repo, git_reference_name(tracking_branch));
-
- git_reference_free(tracking_branch);
-
- /* if it already existed, then the user's refspec created it for us, ignore it' */
- if (error == GIT_EEXISTS)
- error = 0;
-
- return error;
-}
-
-static int update_head_to_default(git_repository *repo)
-{
- git_str initialbranch = GIT_STR_INIT;
- const char *branch_name;
- int error = 0;
-
- if ((error = git_repository_initialbranch(&initialbranch, repo)) < 0)
- goto done;
-
- if (git__prefixcmp(initialbranch.ptr, GIT_REFS_HEADS_DIR) != 0) {
- git_error_set(GIT_ERROR_INVALID, "invalid initial branch '%s'", initialbranch.ptr);
- error = -1;
- goto done;
- }
-
- branch_name = initialbranch.ptr + strlen(GIT_REFS_HEADS_DIR);
-
- error = setup_tracking_config(repo, branch_name, GIT_REMOTE_ORIGIN,
- initialbranch.ptr);
-
-done:
- git_str_dispose(&initialbranch);
- return error;
-}
-
-static int update_remote_head(
- git_repository *repo,
- git_remote *remote,
- git_str *target,
- const char *reflog_message)
-{
- git_refspec *refspec;
- git_reference *remote_head = NULL;
- git_str remote_head_name = GIT_STR_INIT;
- git_str remote_branch_name = GIT_STR_INIT;
- int error;
-
- /* Determine the remote tracking ref name from the local branch */
- refspec = git_remote__matching_refspec(remote, git_str_cstr(target));
-
- if (refspec == NULL) {
- git_error_set(GIT_ERROR_NET, "the remote's default branch does not fit the refspec configuration");
- error = GIT_EINVALIDSPEC;
- goto cleanup;
- }
-
- if ((error = git_refspec__transform(
- &remote_branch_name,
- refspec,
- git_str_cstr(target))) < 0)
- goto cleanup;
-
- if ((error = git_str_printf(&remote_head_name,
- "%s%s/%s",
- GIT_REFS_REMOTES_DIR,
- git_remote_name(remote),
- GIT_HEAD_FILE)) < 0)
- goto cleanup;
-
- error = git_reference_symbolic_create(
- &remote_head,
- repo,
- git_str_cstr(&remote_head_name),
- git_str_cstr(&remote_branch_name),
- true,
- reflog_message);
-
-cleanup:
- git_reference_free(remote_head);
- git_str_dispose(&remote_branch_name);
- git_str_dispose(&remote_head_name);
- return error;
-}
-
-static int update_head_to_remote(
- git_repository *repo,
- git_remote *remote,
- const char *reflog_message)
-{
- int error = 0;
- size_t refs_len;
- const git_remote_head *remote_head, **refs;
- const git_oid *remote_head_id;
- git_str branch = GIT_STR_INIT;
-
- if ((error = git_remote_ls(&refs, &refs_len, remote)) < 0)
- return error;
-
- /* We cloned an empty repository or one with an unborn HEAD */
- if (refs_len == 0 || strcmp(refs[0]->name, GIT_HEAD_FILE))
- return update_head_to_default(repo);
-
- /* We know we have HEAD, let's see where it points */
- remote_head = refs[0];
- GIT_ASSERT(remote_head);
-
- remote_head_id = &remote_head->oid;
-
- error = git_remote__default_branch(&branch, remote);
- if (error == GIT_ENOTFOUND) {
- error = git_repository_set_head_detached(
- repo, remote_head_id);
- goto cleanup;
- }
-
- if ((error = update_remote_head(repo, remote, &branch, reflog_message)) < 0)
- goto cleanup;
-
- error = update_head_to_new_branch(
- repo,
- remote_head_id,
- git_str_cstr(&branch),
- reflog_message);
-
-cleanup:
- git_str_dispose(&branch);
-
- return error;
-}
-
-static int update_head_to_branch(
- git_repository *repo,
- git_remote *remote,
- const char *branch,
- const char *reflog_message)
-{
- int retcode;
- git_str remote_branch_name = GIT_STR_INIT;
- git_reference *remote_ref = NULL;
- git_str default_branch = GIT_STR_INIT;
-
- GIT_ASSERT_ARG(remote);
- GIT_ASSERT_ARG(branch);
-
- if ((retcode = git_str_printf(&remote_branch_name, GIT_REFS_REMOTES_DIR "%s/%s",
- git_remote_name(remote), branch)) < 0 )
- goto cleanup;
-
- if ((retcode = git_reference_lookup(&remote_ref, repo, git_str_cstr(&remote_branch_name))) < 0)
- goto cleanup;
-
- if ((retcode = update_head_to_new_branch(repo, git_reference_target(remote_ref), branch,
- reflog_message)) < 0)
- goto cleanup;
-
- if ((retcode = git_remote__default_branch(&default_branch, remote)) < 0)
- goto cleanup;
-
- if (!git_remote__matching_refspec(remote, git_str_cstr(&default_branch)))
- goto cleanup;
-
- retcode = update_remote_head(repo, remote, &default_branch, reflog_message);
-
-cleanup:
- git_reference_free(remote_ref);
- git_str_dispose(&remote_branch_name);
- git_str_dispose(&default_branch);
- return retcode;
-}
-
-static int default_repository_create(git_repository **out, const char *path, int bare, void *payload)
-{
- GIT_UNUSED(payload);
-
- return git_repository_init(out, path, bare);
-}
-
-static int default_remote_create(
- git_remote **out,
- git_repository *repo,
- const char *name,
- const char *url,
- void *payload)
-{
- GIT_UNUSED(payload);
-
- return git_remote_create(out, repo, name, url);
-}
-
-/*
- * submodules?
- */
-
-static int create_and_configure_origin(
- git_remote **out,
- git_repository *repo,
- const char *url,
- const git_clone_options *options)
-{
- int error;
- git_remote *origin = NULL;
- char buf[GIT_PATH_MAX];
- git_remote_create_cb remote_create = options->remote_cb;
- void *payload = options->remote_cb_payload;
-
- /* If the path exists and is a dir, the url should be the absolute path */
- if (git_fs_path_root(url) < 0 && git_fs_path_exists(url) && git_fs_path_isdir(url)) {
- if (p_realpath(url, buf) == NULL)
- return -1;
-
- url = buf;
- }
-
- if (!remote_create) {
- remote_create = default_remote_create;
- payload = NULL;
- }
-
- if ((error = remote_create(&origin, repo, "origin", url, payload)) < 0)
- goto on_error;
-
- *out = origin;
- return 0;
-
-on_error:
- git_remote_free(origin);
- return error;
-}
-
-static bool should_checkout(
- git_repository *repo,
- bool is_bare,
- const git_checkout_options *opts)
-{
- if (is_bare)
- return false;
-
- if (!opts)
- return false;
-
- if (opts->checkout_strategy == GIT_CHECKOUT_NONE)
- return false;
-
- return !git_repository_head_unborn(repo);
-}
-
-static int checkout_branch(git_repository *repo, git_remote *remote, const git_checkout_options *co_opts, const char *branch, const char *reflog_message)
-{
- int error;
-
- if (branch)
- error = update_head_to_branch(repo, remote, branch, reflog_message);
- /* Point HEAD to the same ref as the remote's head */
- else
- error = update_head_to_remote(repo, remote, reflog_message);
-
- if (!error && should_checkout(repo, git_repository_is_bare(repo), co_opts))
- error = git_checkout_head(repo, co_opts);
-
- return error;
-}
-
-static int clone_into(git_repository *repo, git_remote *_remote, const git_fetch_options *opts, const git_checkout_options *co_opts, const char *branch)
-{
- int error;
- git_str reflog_message = GIT_STR_INIT;
- git_fetch_options fetch_opts;
- git_remote *remote;
-
- GIT_ASSERT_ARG(repo);
- GIT_ASSERT_ARG(_remote);
-
- if (!git_repository_is_empty(repo)) {
- git_error_set(GIT_ERROR_INVALID, "the repository is not empty");
- return -1;
- }
-
- if ((error = git_remote_dup(&remote, _remote)) < 0)
- return error;
-
- memcpy(&fetch_opts, opts, sizeof(git_fetch_options));
- fetch_opts.update_fetchhead = 0;
- fetch_opts.download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL;
- git_str_printf(&reflog_message, "clone: from %s", git_remote_url(remote));
-
- if ((error = git_remote_fetch(remote, NULL, &fetch_opts, git_str_cstr(&reflog_message))) != 0)
- goto cleanup;
-
- error = checkout_branch(repo, remote, co_opts, branch, git_str_cstr(&reflog_message));
-
-cleanup:
- git_remote_free(remote);
- git_str_dispose(&reflog_message);
-
- return error;
-}
-
-int git_clone__should_clone_local(const char *url_or_path, git_clone_local_t local)
-{
- git_str fromurl = GIT_STR_INIT;
- const char *path = url_or_path;
- bool is_url, is_local;
-
- if (local == GIT_CLONE_NO_LOCAL)
- return 0;
-
- if ((is_url = git_fs_path_is_local_file_url(url_or_path)) != 0) {
- if (git_fs_path_fromurl(&fromurl, url_or_path) < 0) {
- is_local = -1;
- goto done;
- }
-
- path = fromurl.ptr;
- }
-
- is_local = (!is_url || local != GIT_CLONE_LOCAL_AUTO) &&
- git_fs_path_isdir(path);
-
-done:
- git_str_dispose(&fromurl);
- return is_local;
-}
-
-static int git__clone(
- git_repository **out,
- const char *url,
- const char *local_path,
- const git_clone_options *_options,
- int use_existing)
-{
- int error = 0;
- git_repository *repo = NULL;
- git_remote *origin;
- git_clone_options options = GIT_CLONE_OPTIONS_INIT;
- uint32_t rmdir_flags = GIT_RMDIR_REMOVE_FILES;
- git_repository_create_cb repository_cb;
-
- GIT_ASSERT_ARG(out);
- GIT_ASSERT_ARG(url);
- GIT_ASSERT_ARG(local_path);
-
- if (_options)
- memcpy(&options, _options, sizeof(git_clone_options));
-
- GIT_ERROR_CHECK_VERSION(&options, GIT_CLONE_OPTIONS_VERSION, "git_clone_options");
-
- /* Only clone to a new directory or an empty directory */
- if (git_fs_path_exists(local_path) && !use_existing && !git_fs_path_is_empty_dir(local_path)) {
- git_error_set(GIT_ERROR_INVALID,
- "'%s' exists and is not an empty directory", local_path);
- return GIT_EEXISTS;
- }
-
- /* Only remove the root directory on failure if we create it */
- if (git_fs_path_exists(local_path))
- rmdir_flags |= GIT_RMDIR_SKIP_ROOT;
-
- if (options.repository_cb)
- repository_cb = options.repository_cb;
- else
- repository_cb = default_repository_create;
-
- if ((error = repository_cb(&repo, local_path, options.bare, options.repository_cb_payload)) < 0)
- return error;
-
- if (!(error = create_and_configure_origin(&origin, repo, url, &options))) {
- int clone_local = git_clone__should_clone_local(url, options.local);
- int link = options.local != GIT_CLONE_LOCAL_NO_LINKS;
-
- if (clone_local == 1)
- error = clone_local_into(
- repo, origin, &options.fetch_opts, &options.checkout_opts,
- options.checkout_branch, link);
- else if (clone_local == 0)
- error = clone_into(
- repo, origin, &options.fetch_opts, &options.checkout_opts,
- options.checkout_branch);
- else
- error = -1;
-
- git_remote_free(origin);
- }
-
- if (error != 0) {
- git_error_state last_error = {0};
- git_error_state_capture(&last_error, error);
-
- git_repository_free(repo);
- repo = NULL;
-
- (void)git_futils_rmdir_r(local_path, NULL, rmdir_flags);
-
- git_error_state_restore(&last_error);
- }
-
- *out = repo;
- return error;
-}
-
-int git_clone(
- git_repository **out,
- const char *url,
- const char *local_path,
- const git_clone_options *_options)
-{
- return git__clone(out, url, local_path, _options, 0);
-}
-
-int git_clone__submodule(
- git_repository **out,
- const char *url,
- const char *local_path,
- const git_clone_options *_options)
-{
- return git__clone(out, url, local_path, _options, 1);
-}
-
-int git_clone_options_init(git_clone_options *opts, unsigned int version)
-{
- GIT_INIT_STRUCTURE_FROM_TEMPLATE(
- opts, version, git_clone_options, GIT_CLONE_OPTIONS_INIT);
- return 0;
-}
-
-#ifndef GIT_DEPRECATE_HARD
-int git_clone_init_options(git_clone_options *opts, unsigned int version)
-{
- return git_clone_options_init(opts, version);
-}
-#endif
-
-static bool can_link(const char *src, const char *dst, int link)
-{
-#ifdef GIT_WIN32
- GIT_UNUSED(src);
- GIT_UNUSED(dst);
- GIT_UNUSED(link);
- return false;
-#else
-
- struct stat st_src, st_dst;
-
- if (!link)
- return false;
-
- if (p_stat(src, &st_src) < 0)
- return false;
-
- if (p_stat(dst, &st_dst) < 0)
- return false;
-
- return st_src.st_dev == st_dst.st_dev;
-#endif
-}
-
-static int clone_local_into(git_repository *repo, git_remote *remote, const git_fetch_options *fetch_opts, const git_checkout_options *co_opts, const char *branch, int link)
-{
- int error, flags;
- git_repository *src;
- git_str src_odb = GIT_STR_INIT, dst_odb = GIT_STR_INIT, src_path = GIT_STR_INIT;
- git_str reflog_message = GIT_STR_INIT;
-
- GIT_ASSERT_ARG(repo);
- GIT_ASSERT_ARG(remote);
-
- if (!git_repository_is_empty(repo)) {
- git_error_set(GIT_ERROR_INVALID, "the repository is not empty");
- return -1;
- }
-
- /*
- * Let's figure out what path we should use for the source
- * repo, if it's not rooted, the path should be relative to
- * the repository's worktree/gitdir.
- */
- if ((error = git_fs_path_from_url_or_path(&src_path, git_remote_url(remote))) < 0)
- return error;
-
- /* Copy .git/objects/ from the source to the target */
- if ((error = git_repository_open(&src, git_str_cstr(&src_path))) < 0) {
- git_str_dispose(&src_path);
- return error;
- }
-
- if (git_repository__item_path(&src_odb, src, GIT_REPOSITORY_ITEM_OBJECTS) < 0 ||
- git_repository__item_path(&dst_odb, repo, GIT_REPOSITORY_ITEM_OBJECTS) < 0) {
- error = -1;
- goto cleanup;
- }
-
- flags = 0;
- if (can_link(git_repository_path(src), git_repository_path(repo), link))
- flags |= GIT_CPDIR_LINK_FILES;
-
- error = git_futils_cp_r(git_str_cstr(&src_odb), git_str_cstr(&dst_odb),
- flags, GIT_OBJECT_DIR_MODE);
-
- /*
- * can_link() doesn't catch all variations, so if we hit an
- * error and did want to link, let's try again without trying
- * to link.
- */
- if (error < 0 && link) {
- flags &= ~GIT_CPDIR_LINK_FILES;
- error = git_futils_cp_r(git_str_cstr(&src_odb), git_str_cstr(&dst_odb),
- flags, GIT_OBJECT_DIR_MODE);
- }
-
- if (error < 0)
- goto cleanup;
-
- git_str_printf(&reflog_message, "clone: from %s", git_remote_url(remote));
-
- if ((error = git_remote_fetch(remote, NULL, fetch_opts, git_str_cstr(&reflog_message))) != 0)
- goto cleanup;
-
- error = checkout_branch(repo, remote, co_opts, branch, git_str_cstr(&reflog_message));
-
-cleanup:
- git_str_dispose(&reflog_message);
- git_str_dispose(&src_path);
- git_str_dispose(&src_odb);
- git_str_dispose(&dst_odb);
- git_repository_free(src);
- return error;
-}
projects / libgit2.git / blobdiff