int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
struct oid_array merge_heads = OID_ARRAY_INIT;
struct object_id orig_head, curr_head;
struct object_id rebase_fork_point;
int autostash;
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
git_config(git_pull_config, NULL);
argc = parse_options(argc, argv, prefix, pull_options, pull_usage, 0);
parse_repo_refspecs(argc, argv, &repo, &refspecs);
if (!opt_ff)
opt_ff = xstrdup_or_null(config_get_ff());
if (opt_rebase < 0)
opt_rebase = config_get_rebase();
if (read_cache_unmerged())
die_resolve_conflict("pull");
if (file_exists(git_path_merge_head(the_repository)))
die_conclude_merge();
if (get_oid("HEAD", &orig_head))
oidclr(&orig_head);
if (!opt_rebase && opt_autostash != -1)
die(_("--[no-]autostash option is only valid with --rebase."));
autostash = config_autostash;
if (opt_rebase) {
if (opt_autostash != -1)
autostash = opt_autostash;
if (is_null_oid(&orig_head) && !is_cache_unborn())
die(_("Updating an unborn branch with changes added to the index."));
if (!autostash)
require_clean_work_tree(N_("pull with rebase"),
_("please commit or stash them."), 1, 0);
if (get_rebase_fork_point(&rebase_fork_point, repo, *refspecs))
oidclr(&rebase_fork_point);
}
if (run_fetch(repo, refspecs))
return 1;
if (opt_dry_run)
return 0;
if (get_oid("HEAD", &curr_head))
oidclr(&curr_head);
if (!is_null_oid(&orig_head) && !is_null_oid(&curr_head) &&
!oideq(&orig_head, &curr_head)) {
/*
* The fetch involved updating the current branch.
*
* The working tree and the index file are still based on
* orig_head commit, but we are merging into curr_head.
* Update the working tree to match curr_head.
*/
warning(_("fetch updated the current branch head.\n"
"fast-forwarding your working tree from\n"
"commit %s."), oid_to_hex(&orig_head));
if (checkout_fast_forward(&orig_head, &curr_head, 0))
die(_("Cannot fast-forward your working tree.\n"
"After making sure that you saved anything precious from\n"
"$ git diff %s\n"
"output, run\n"
"$ git reset --hard\n"
"to recover."), oid_to_hex(&orig_head));
}
get_merge_heads(&merge_heads);
if (!merge_heads.nr)
die_no_merge_candidates(repo, refspecs);
if (is_null_oid(&orig_head)) {
if (merge_heads.nr > 1)
die(_("Cannot merge multiple branches into empty head."));
return pull_into_void(merge_heads.oid, &curr_head);
}
if (opt_rebase && merge_heads.nr > 1)
die(_("Cannot rebase onto multiple branches."));
if (opt_rebase) {
int ret = 0;
if ((recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) &&
submodule_touches_in_range(&rebase_fork_point, &curr_head))
die(_("cannot rebase with locally recorded submodule modifications"));
if (!autostash) {
struct commit_list *list = NULL;
struct commit *merge_head, *head;
head = lookup_commit_reference(the_repository,
&orig_head);
commit_list_insert(head, &list);
merge_head = lookup_commit_reference(the_repository,
&merge_heads.oid[0]);
if (is_descendant_of(merge_head, list)) {
/* we can fast-forward this without invoking rebase */
opt_ff = "--ff-only";
ret = run_merge();
}
}
ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point);
if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
ret = rebase_submodules();
return ret;
} else {
int ret = run_merge();
if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON ||
recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND))
ret = update_submodules();
return ret;
}
}
int cmd_pull(int argc, const char **argv, const char *prefix)
{
const char *repo, **refspecs;
struct sha1_array merge_heads = SHA1_ARRAY_INIT;
unsigned char orig_head[GIT_SHA1_RAWSZ], curr_head[GIT_SHA1_RAWSZ];
unsigned char rebase_fork_point[GIT_SHA1_RAWSZ];
if (!getenv("GIT_REFLOG_ACTION"))
set_reflog_message(argc, argv);
argc = parse_options(argc, argv, prefix, pull_options, pull_usage, 0);
parse_repo_refspecs(argc, argv, &repo, &refspecs);
if (!opt_ff)
opt_ff = xstrdup_or_null(config_get_ff());
if (opt_rebase < 0)
opt_rebase = config_get_rebase();
git_config(git_pull_config, NULL);
if (read_cache_unmerged())
die_resolve_conflict("Pull");
if (file_exists(git_path("MERGE_HEAD")))
die_conclude_merge();
if (get_sha1("HEAD", orig_head))
hashclr(orig_head);
if (!opt_rebase && opt_autostash != -1)
die(_("--[no-]autostash option is only valid with --rebase."));
if (opt_rebase) {
int autostash = config_autostash;
if (opt_autostash != -1)
autostash = opt_autostash;
if (is_null_sha1(orig_head) && !is_cache_unborn())
die(_("Updating an unborn branch with changes added to the index."));
if (!autostash)
die_on_unclean_work_tree(prefix);
if (get_rebase_fork_point(rebase_fork_point, repo, *refspecs))
hashclr(rebase_fork_point);
}
if (run_fetch(repo, refspecs))
return 1;
if (opt_dry_run)
return 0;
if (get_sha1("HEAD", curr_head))
hashclr(curr_head);
if (!is_null_sha1(orig_head) && !is_null_sha1(curr_head) &&
hashcmp(orig_head, curr_head)) {
/*
* The fetch involved updating the current branch.
*
* The working tree and the index file are still based on
* orig_head commit, but we are merging into curr_head.
* Update the working tree to match curr_head.
*/
warning(_("fetch updated the current branch head.\n"
"fast-forwarding your working tree from\n"
"commit %s."), sha1_to_hex(orig_head));
if (checkout_fast_forward(orig_head, curr_head, 0))
die(_("Cannot fast-forward your working tree.\n"
"After making sure that you saved anything precious from\n"
"$ git diff %s\n"
"output, run\n"
"$ git reset --hard\n"
"to recover."), sha1_to_hex(orig_head));
}
get_merge_heads(&merge_heads);
if (!merge_heads.nr)
die_no_merge_candidates(repo, refspecs);
if (is_null_sha1(orig_head)) {
if (merge_heads.nr > 1)
die(_("Cannot merge multiple branches into empty head."));
return pull_into_void(*merge_heads.sha1, curr_head);
} else if (opt_rebase) {
if (merge_heads.nr > 1)
die(_("Cannot rebase onto multiple branches."));
return run_rebase(curr_head, *merge_heads.sha1, rebase_fork_point);
} else
return run_merge();
}