/*
* Return a pointer to a ref_cache for the specified submodule. For
- * the main repository, use submodule==NULL. The returned structure
- * will be allocated and initialized but not necessarily populated; it
- * should not be freed.
+ * the main repository, use submodule==NULL; such a call cannot fail.
+ * For a submodule, the submodule must exist and be a nonbare
+ * repository, otherwise return NULL.
+ *
+ * The returned structure will be allocated and initialized but not
+ * necessarily populated; it should not be freed.
*/
static struct ref_cache *get_ref_cache(const char *submodule)
{
struct ref_cache *refs = lookup_ref_cache(submodule);
- if (!refs)
- refs = create_ref_cache(submodule);
+
+ if (!refs) {
+ struct strbuf submodule_sb = STRBUF_INIT;
+
+ strbuf_addstr(&submodule_sb, submodule);
+ if (is_nonbare_repository_dir(&submodule_sb))
+ refs = create_ref_cache(submodule);
+ strbuf_release(&submodule_sb);
+ }
+
return refs;
}
return -1;
strbuf_add(&submodule, path, len);
- refs = lookup_ref_cache(submodule.buf);
+ refs = get_ref_cache(submodule.buf);
if (!refs) {
- if (!is_nonbare_repository_dir(&submodule)) {
- strbuf_release(&submodule);
- return -1;
- }
- refs = create_ref_cache(submodule.buf);
+ strbuf_release(&submodule);
+ return -1;
}
strbuf_release(&submodule);
struct ref_cache *refs;
refs = get_ref_cache(submodule);
+ if (!refs)
+ return 0;
+
data.prefix = prefix;
data.trim = trim;
data.flags = flags;