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-rw-r--r--branch.c237
1 files changed, 171 insertions, 66 deletions
diff --git a/branch.c b/branch.c
index 07a4643..5d20a2e 100644
--- a/branch.c
+++ b/branch.c
@@ -11,7 +11,7 @@
struct tracking {
struct refspec_item spec;
- char *src;
+ struct string_list *srcs;
const char *remote;
int matches;
};
@@ -22,11 +22,11 @@ static int find_tracked_branch(struct remote *remote, void *priv)
if (!remote_find_tracking(remote, &tracking->spec)) {
if (++tracking->matches == 1) {
- tracking->src = tracking->spec.src;
+ string_list_append(tracking->srcs, tracking->spec.src);
tracking->remote = remote->name;
} else {
free(tracking->spec.src);
- FREE_AND_NULL(tracking->src);
+ string_list_clear(tracking->srcs, 0);
}
tracking->spec.src = NULL;
}
@@ -49,25 +49,46 @@ static int should_setup_rebase(const char *origin)
return 0;
}
-static const char tracking_advice[] =
-N_("\n"
-"After fixing the error cause you may try to fix up\n"
-"the remote tracking information by invoking\n"
-"\"git branch --set-upstream-to=%s%s%s\".");
-
-int install_branch_config(int flag, const char *local, const char *origin, const char *remote)
+/**
+ * Install upstream tracking configuration for a branch; specifically, add
+ * `branch.<name>.remote` and `branch.<name>.merge` entries.
+ *
+ * `flag` contains integer flags for options; currently only
+ * BRANCH_CONFIG_VERBOSE is checked.
+ *
+ * `local` is the name of the branch whose configuration we're installing.
+ *
+ * `origin` is the name of the remote owning the upstream branches. NULL means
+ * the upstream branches are local to this repo.
+ *
+ * `remotes` is a list of refs that are upstream of local
+ */
+static int install_branch_config_multiple_remotes(int flag, const char *local,
+ const char *origin, struct string_list *remotes)
{
const char *shortname = NULL;
struct strbuf key = STRBUF_INIT;
+ struct string_list_item *item;
int rebasing = should_setup_rebase(origin);
- if (skip_prefix(remote, "refs/heads/", &shortname)
- && !strcmp(local, shortname)
- && !origin) {
- warning(_("Not setting branch %s as its own upstream."),
- local);
- return 0;
- }
+ if (!remotes->nr)
+ BUG("must provide at least one remote for branch config");
+ if (rebasing && remotes->nr > 1)
+ die(_("cannot inherit upstream tracking configuration of "
+ "multiple refs when rebasing is requested"));
+
+ /*
+ * If the new branch is trying to track itself, something has gone
+ * wrong. Warn the user and don't proceed any further.
+ */
+ if (!origin)
+ for_each_string_list_item(item, remotes)
+ if (skip_prefix(item->string, "refs/heads/", &shortname)
+ && !strcmp(local, shortname)) {
+ warning(_("not setting branch '%s' as its own upstream"),
+ local);
+ return 0;
+ }
strbuf_addf(&key, "branch.%s.remote", local);
if (git_config_set_gently(key.buf, origin ? origin : ".") < 0)
@@ -75,8 +96,17 @@ int install_branch_config(int flag, const char *local, const char *origin, const
strbuf_reset(&key);
strbuf_addf(&key, "branch.%s.merge", local);
- if (git_config_set_gently(key.buf, remote) < 0)
+ /*
+ * We want to overwrite any existing config with all the branches in
+ * "remotes". Override any existing config, then write our branches. If
+ * more than one is provided, use CONFIG_REGEX_NONE to preserve what
+ * we've written so far.
+ */
+ if (git_config_set_gently(key.buf, NULL) < 0)
goto out_err;
+ for_each_string_list_item(item, remotes)
+ if (git_config_set_multivar_gently(key.buf, item->string, CONFIG_REGEX_NONE, 0) < 0)
+ goto out_err;
if (rebasing) {
strbuf_reset(&key);
@@ -87,45 +117,106 @@ int install_branch_config(int flag, const char *local, const char *origin, const
strbuf_release(&key);
if (flag & BRANCH_CONFIG_VERBOSE) {
- if (shortname) {
- if (origin)
- printf_ln(rebasing ?
- _("Branch '%s' set up to track remote branch '%s' from '%s' by rebasing.") :
- _("Branch '%s' set up to track remote branch '%s' from '%s'."),
- local, shortname, origin);
- else
- printf_ln(rebasing ?
- _("Branch '%s' set up to track local branch '%s' by rebasing.") :
- _("Branch '%s' set up to track local branch '%s'."),
- local, shortname);
+ struct strbuf tmp_ref_name = STRBUF_INIT;
+ struct string_list friendly_ref_names = STRING_LIST_INIT_DUP;
+
+ for_each_string_list_item(item, remotes) {
+ shortname = item->string;
+ skip_prefix(shortname, "refs/heads/", &shortname);
+ if (origin) {
+ strbuf_addf(&tmp_ref_name, "%s/%s",
+ origin, shortname);
+ string_list_append_nodup(
+ &friendly_ref_names,
+ strbuf_detach(&tmp_ref_name, NULL));
+ } else {
+ string_list_append(
+ &friendly_ref_names, shortname);
+ }
+ }
+
+ if (remotes->nr == 1) {
+ /*
+ * Rebasing is only allowed in the case of a single
+ * upstream branch.
+ */
+ printf_ln(rebasing ?
+ _("branch '%s' set up to track '%s' by rebasing.") :
+ _("branch '%s' set up to track '%s'."),
+ local, friendly_ref_names.items[0].string);
} else {
- if (origin)
- printf_ln(rebasing ?
- _("Branch '%s' set up to track remote ref '%s' by rebasing.") :
- _("Branch '%s' set up to track remote ref '%s'."),
- local, remote);
- else
- printf_ln(rebasing ?
- _("Branch '%s' set up to track local ref '%s' by rebasing.") :
- _("Branch '%s' set up to track local ref '%s'."),
- local, remote);
+ printf_ln(_("branch '%s' set up to track:"), local);
+ for_each_string_list_item(item, &friendly_ref_names)
+ printf_ln(" %s", item->string);
}
+
+ string_list_clear(&friendly_ref_names, 0);
}
return 0;
out_err:
strbuf_release(&key);
- error(_("Unable to write upstream branch configuration"));
-
- advise(_(tracking_advice),
- origin ? origin : "",
- origin ? "/" : "",
- shortname ? shortname : remote);
+ error(_("unable to write upstream branch configuration"));
+
+ advise(_("\nAfter fixing the error cause you may try to fix up\n"
+ "the remote tracking information by invoking:"));
+ if (remotes->nr == 1)
+ advise(" git branch --set-upstream-to=%s%s%s",
+ origin ? origin : "",
+ origin ? "/" : "",
+ remotes->items[0].string);
+ else {
+ advise(" git config --add branch.\"%s\".remote %s",
+ local, origin ? origin : ".");
+ for_each_string_list_item(item, remotes)
+ advise(" git config --add branch.\"%s\".merge %s",
+ local, item->string);
+ }
return -1;
}
+int install_branch_config(int flag, const char *local, const char *origin,
+ const char *remote)
+{
+ int ret;
+ struct string_list remotes = STRING_LIST_INIT_DUP;
+
+ string_list_append(&remotes, remote);
+ ret = install_branch_config_multiple_remotes(flag, local, origin, &remotes);
+ string_list_clear(&remotes, 0);
+ return ret;
+}
+
+static int inherit_tracking(struct tracking *tracking, const char *orig_ref)
+{
+ const char *bare_ref;
+ struct branch *branch;
+ int i;
+
+ bare_ref = orig_ref;
+ skip_prefix(orig_ref, "refs/heads/", &bare_ref);
+
+ branch = branch_get(bare_ref);
+ if (!branch->remote_name) {
+ warning(_("asked to inherit tracking from '%s', but no remote is set"),
+ bare_ref);
+ return -1;
+ }
+
+ if (branch->merge_nr < 1 || !branch->merge_name || !branch->merge_name[0]) {
+ warning(_("asked to inherit tracking from '%s', but no merge configuration is set"),
+ bare_ref);
+ return -1;
+ }
+
+ tracking->remote = xstrdup(branch->remote_name);
+ for (i = 0; i < branch->merge_nr; i++)
+ string_list_append(tracking->srcs, branch->merge_name[i]);
+ return 0;
+}
+
/*
* 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
@@ -135,11 +226,15 @@ static void setup_tracking(const char *new_ref, const char *orig_ref,
enum branch_track track, int quiet)
{
struct tracking tracking;
+ struct string_list tracking_srcs = STRING_LIST_INIT_DUP;
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))
+ tracking.srcs = &tracking_srcs;
+ if (track != BRANCH_TRACK_INHERIT)
+ for_each_remote(find_tracked_branch, &tracking);
+ else if (inherit_tracking(&tracking, orig_ref))
return;
if (!tracking.matches)
@@ -147,20 +242,23 @@ static void setup_tracking(const char *new_ref, const char *orig_ref,
case BRANCH_TRACK_ALWAYS:
case BRANCH_TRACK_EXPLICIT:
case BRANCH_TRACK_OVERRIDE:
+ case BRANCH_TRACK_INHERIT:
break;
default:
return;
}
if (tracking.matches > 1)
- die(_("Not tracking: ambiguous information for ref %s"),
+ die(_("not tracking: ambiguous information for ref %s"),
orig_ref);
- if (install_branch_config(config_flags, new_ref, tracking.remote,
- tracking.src ? tracking.src : orig_ref) < 0)
+ if (tracking.srcs->nr < 1)
+ string_list_append(tracking.srcs, orig_ref);
+ if (install_branch_config_multiple_remotes(config_flags, new_ref,
+ tracking.remote, tracking.srcs) < 0)
exit(-1);
- free(tracking.src);
+ string_list_clear(tracking.srcs, 0);
}
int read_branch_desc(struct strbuf *buf, const char *branch_name)
@@ -186,7 +284,7 @@ int read_branch_desc(struct strbuf *buf, const char *branch_name)
int validate_branchname(const char *name, struct strbuf *ref)
{
if (strbuf_check_branch_ref(ref, name))
- die(_("'%s' is not a valid branch name."), name);
+ die(_("'%s' is not a valid branch name"), name);
return ref_exists(ref->buf);
}
@@ -199,18 +297,23 @@ int validate_branchname(const char *name, struct strbuf *ref)
*/
int validate_new_branchname(const char *name, struct strbuf *ref, int force)
{
- const char *head;
+ struct worktree **worktrees;
+ const struct worktree *wt;
if (!validate_branchname(name, ref))
return 0;
if (!force)
- die(_("A branch named '%s' already exists."),
+ die(_("a branch named '%s' already exists"),
ref->buf + strlen("refs/heads/"));
- head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
- if (!is_bare_repository() && head && !strcmp(head, ref->buf))
- die(_("Cannot force update the current branch."));
+ worktrees = get_worktrees();
+ wt = find_shared_symref(worktrees, "HEAD", ref->buf);
+ if (wt && !wt->is_bare)
+ die(_("cannot force update the branch '%s' "
+ "checked out at '%s'"),
+ ref->buf + strlen("refs/heads/"), wt->path);
+ free_worktrees(worktrees);
return 1;
}
@@ -230,7 +333,7 @@ static int validate_remote_tracking_branch(char *ref)
}
static const char upstream_not_branch[] =
-N_("Cannot setup tracking information; starting point '%s' is not a branch.");
+N_("cannot set up tracking information; starting point '%s' is not a branch");
static const char upstream_missing[] =
N_("the requested upstream branch '%s' does not exist");
static const char upstream_advice[] =
@@ -278,7 +381,7 @@ void create_branch(struct repository *r,
}
die(_(upstream_missing), start_name);
}
- die(_("Not a valid object name: '%s'."), start_name);
+ die(_("not a valid object name: '%s'"), start_name);
}
switch (dwim_ref(start_name, strlen(start_name), &oid, &real_ref, 0)) {
@@ -298,12 +401,12 @@ void create_branch(struct repository *r,
}
break;
default:
- die(_("Ambiguous object name: '%s'."), start_name);
+ die(_("ambiguous object name: '%s'"), start_name);
break;
}
if ((commit = lookup_commit_reference(r, &oid)) == NULL)
- die(_("Not a valid branch point: '%s'."), start_name);
+ die(_("not a valid branch point: '%s'"), start_name);
oidcpy(&oid, &commit->object.oid);
if (reflog)
@@ -357,14 +460,16 @@ void remove_branch_state(struct repository *r, int verbose)
void die_if_checked_out(const char *branch, int ignore_current_worktree)
{
+ struct worktree **worktrees = get_worktrees();
const struct worktree *wt;
- wt = find_shared_symref("HEAD", branch);
- if (!wt || (ignore_current_worktree && wt->is_current))
- return;
- skip_prefix(branch, "refs/heads/", &branch);
- die(_("'%s' is already checked out at '%s'"),
- branch, wt->path);
+ wt = find_shared_symref(worktrees, "HEAD", branch);
+ if (wt && (!ignore_current_worktree || !wt->is_current)) {
+ skip_prefix(branch, "refs/heads/", &branch);
+ die(_("'%s' is already checked out at '%s'"), branch, wt->path);
+ }
+
+ free_worktrees(worktrees);
}
int replace_each_worktree_head_symref(const char *oldref, const char *newref,