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-rw-r--r--remote.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/remote.c b/remote.c
index b1ff7a2..0d38353 100644
--- a/remote.c
+++ b/remote.c
@@ -1921,3 +1921,60 @@ struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fet
string_list_clear(&ref_names, 0);
return stale_refs;
}
+
+/*
+ * Compare-and-swap
+ */
+void clear_cas_option(struct push_cas_option *cas)
+{
+ int i;
+
+ for (i = 0; i < cas->nr; i++)
+ free(cas->entry[i].refname);
+ free(cas->entry);
+ memset(cas, 0, sizeof(*cas));
+}
+
+static struct push_cas *add_cas_entry(struct push_cas_option *cas,
+ const char *refname,
+ size_t refnamelen)
+{
+ struct push_cas *entry;
+ ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc);
+ entry = &cas->entry[cas->nr++];
+ memset(entry, 0, sizeof(*entry));
+ entry->refname = xmemdupz(refname, refnamelen);
+ return entry;
+}
+
+int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset)
+{
+ const char *colon;
+ struct push_cas *entry;
+
+ if (unset) {
+ /* "--no-<option>" */
+ clear_cas_option(cas);
+ return 0;
+ }
+
+ if (!arg) {
+ /* just "--<option>" */
+ cas->use_tracking_for_rest = 1;
+ return 0;
+ }
+
+ /* "--<option>=refname" or "--<option>=refname:value" */
+ colon = strchrnul(arg, ':');
+ entry = add_cas_entry(cas, arg, colon - arg);
+ if (!*colon)
+ entry->use_tracking = 1;
+ else if (get_sha1(colon + 1, entry->expect))
+ return error("cannot parse expected object name '%s'", colon + 1);
+ return 0;
+}
+
+int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset)
+{
+ return parse_push_cas_option(opt->value, arg, unset);
+}