/*
* This is called when new_ref is branched off of orig_ref, and tries
* to infer the settings for branch.<new_ref>.{remote,merge} from the
* config.
*/
static int setup_tracking(const char *new_ref, const char *orig_ref,
enum branch_track track, int quiet)
{
struct tracking tracking;
int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE;
memset(&tracking, 0, sizeof(tracking));
tracking.spec.dst = (char *)orig_ref;
if (for_each_remote(find_tracked_branch, &tracking))
return 1;
if (!tracking.matches)
switch (track) {
case BRANCH_TRACK_ALWAYS:
case BRANCH_TRACK_EXPLICIT:
case BRANCH_TRACK_OVERRIDE:
break;
default:
return 1;
}
if (tracking.matches > 1)
return error(_("Not tracking: ambiguous information for ref %s"),
orig_ref);
install_branch_config(config_flags, new_ref, tracking.remote,
tracking.src ? tracking.src : orig_ref);
free(tracking.src);
return 0;
}
const char *unique_tracking_name(const char *name, struct object_id *oid)
{
struct tracking_name_data cb_data = { NULL, NULL, NULL, 1 };
cb_data.src_ref = xstrfmt("refs/heads/%s", name);
cb_data.dst_oid = oid;
for_each_remote(check_tracking_name, &cb_data);
free(cb_data.src_ref);
if (cb_data.unique)
return cb_data.dst_ref;
free(cb_data.dst_ref);
return NULL;
}
int cmd_fetch(int argc, const char **argv, const char *prefix)
{
int i;
struct string_list list = { NULL, 0, 0, 0 };
struct remote *remote;
int result = 0;
/* Record the command line for the reflog */
strbuf_addstr(&default_rla, "fetch");
for (i = 1; i < argc; i++)
strbuf_addf(&default_rla, " %s", argv[i]);
argc = parse_options(argc, argv, prefix,
builtin_fetch_options, builtin_fetch_usage, 0);
if (all) {
if (argc == 1)
die("fetch --all does not take a repository argument");
else if (argc > 1)
die("fetch --all does not make sense with refspecs");
(void) for_each_remote(get_one_remote_for_fetch, &list);
result = fetch_multiple(&list);
} else if (argc == 0) {
/* No arguments -- use default remote */
remote = remote_get(NULL);
result = fetch_one(remote, argc, argv);
} else if (multiple) {
/* All arguments are assumed to be remotes or groups */
for (i = 0; i < argc; i++)
if (!add_remote_or_group(argv[i], &list))
die("No such remote or remote group: %s", argv[i]);
result = fetch_multiple(&list);
} else {
/* Single remote or group */
(void) add_remote_or_group(argv[0], &list);
if (list.nr > 1) {
/* More than one remote */
if (argc > 1)
die("Fetching a group and specifying refspecs does not make sense");
result = fetch_multiple(&list);
} else {
/* Zero or one remotes */
remote = remote_get(argv[0]);
result = fetch_one(remote, argc-1, argv+1);
}
}
/* All names were strdup()ed or strndup()ed */
list.strdup_strings = 1;
string_list_clear(&list, 0);
return result;
}
/**
* Dies with the appropriate reason for why there are no merge candidates:
*
* 1. We fetched from a specific remote, and a refspec was given, but it ended
* up not fetching anything. This is usually because the user provided a
* wildcard refspec which had no matches on the remote end.
*
* 2. We fetched from a non-default remote, but didn't specify a branch to
* merge. We can't use the configured one because it applies to the default
* remote, thus the user must specify the branches to merge.
*
* 3. We fetched from the branch's or repo's default remote, but:
*
* a. We are not on a branch, so there will never be a configured branch to
* merge with.
*
* b. We are on a branch, but there is no configured branch to merge with.
*
* 4. We fetched from the branch's or repo's default remote, but the configured
* branch to merge didn't get fetched. (Either it doesn't exist, or wasn't
* part of the configured fetch refspec.)
*/
static void NORETURN die_no_merge_candidates(const char *repo, const char **refspecs)
{
struct branch *curr_branch = branch_get("HEAD");
const char *remote = curr_branch ? curr_branch->remote_name : NULL;
if (*refspecs) {
if (opt_rebase)
fprintf_ln(stderr, _("There is no candidate for rebasing against among the refs that you just fetched."));
else
fprintf_ln(stderr, _("There are no candidates for merging among the refs that you just fetched."));
fprintf_ln(stderr, _("Generally this means that you provided a wildcard refspec which had no\n"
"matches on the remote end."));
} else if (repo && curr_branch && (!remote || strcmp(repo, remote))) {
fprintf_ln(stderr, _("You asked to pull from the remote '%s', but did not specify\n"
"a branch. Because this is not the default configured remote\n"
"for your current branch, you must specify a branch on the command line."),
repo);
} else if (!curr_branch) {
fprintf_ln(stderr, _("You are not currently on a branch."));
if (opt_rebase)
fprintf_ln(stderr, _("Please specify which branch you want to rebase against."));
else
fprintf_ln(stderr, _("Please specify which branch you want to merge with."));
fprintf_ln(stderr, _("See git-pull(1) for details."));
fprintf(stderr, "\n");
fprintf_ln(stderr, " git pull %s %s", _("<remote>"), _("<branch>"));
fprintf(stderr, "\n");
} else if (!curr_branch->merge_nr) {
const char *remote_name = NULL;
if (for_each_remote(get_only_remote, &remote_name) || !remote_name)
remote_name = _("<remote>");
fprintf_ln(stderr, _("There is no tracking information for the current branch."));
if (opt_rebase)
fprintf_ln(stderr, _("Please specify which branch you want to rebase against."));
else
fprintf_ln(stderr, _("Please specify which branch you want to merge with."));
fprintf_ln(stderr, _("See git-pull(1) for details."));
fprintf(stderr, "\n");
fprintf_ln(stderr, " git pull %s %s", _("<remote>"), _("<branch>"));
fprintf(stderr, "\n");
fprintf_ln(stderr, _("If you wish to set tracking information for this branch you can do so with:"));
fprintf(stderr, "\n");
fprintf_ln(stderr, " git branch --set-upstream-to=%s/%s %s\n",
remote_name, _("<branch>"), curr_branch->name);
} else
fprintf_ln(stderr, _("Your configuration specifies to merge with the ref '%s'\n"
"from the remote, but no such ref was fetched."),
*curr_branch->merge_name);
exit(1);
}
/*
* This is called when new_ref is branched off of orig_ref, and tries
* to infer the settings for branch.<new_ref>.{remote,merge} from the
* config.
*/
static int setup_tracking(const char *new_ref, const char *orig_ref,
enum branch_track track)
{
char key[1024];
struct tracking tracking;
if (strlen(new_ref) > 1024 - 7 - 7 - 1)
return error("Tracking not set up: name too long: %s",
new_ref);
memset(&tracking, 0, sizeof(tracking));
tracking.spec.dst = (char *)orig_ref;
if (for_each_remote(find_tracked_branch, &tracking))
return 1;
if (!tracking.matches)
switch (track) {
case BRANCH_TRACK_ALWAYS:
case BRANCH_TRACK_EXPLICIT:
break;
default:
return 1;
}
if (tracking.matches > 1)
return error("Not tracking: ambiguous information for ref %s",
orig_ref);
sprintf(key, "branch.%s.remote", new_ref);
git_config_set(key, tracking.remote ? tracking.remote : ".");
sprintf(key, "branch.%s.merge", new_ref);
git_config_set(key, tracking.src ? tracking.src : orig_ref);
printf("Branch %s set up to track %s branch %s.\n", new_ref,
tracking.remote ? "remote" : "local", orig_ref);
if (should_setup_rebase(&tracking)) {
sprintf(key, "branch.%s.rebase", new_ref);
git_config_set(key, "true");
printf("This branch will rebase on pull.\n");
}
free(tracking.src);
return 0;
}
int setup_publish(const char *name, const char *ref)
{
struct tracking tracking;
const char *remote, *remote_ref;
memset(&tracking, 0, sizeof(tracking));
tracking.spec.dst = (char *)ref;
if (for_each_remote(find_tracked_branch, &tracking))
return 1;
if (tracking.matches > 1)
return error(_("Not tracking: ambiguous information for ref %s"),
ref);
remote = tracking.remote;
remote_ref = tracking.src ? tracking.src : ref;
install_branch_publish(name, remote, remote_ref);
free(tracking.src);
return 0;
}
static int validate_remote_tracking_branch(char *ref)
{
return !for_each_remote(check_tracking_branch, ref);
}
