When building some UI menus, I wanted to get a list of defined roles. Config::getRoleNameByIndex() only returned the resolved colorspace name.

--snip--
Replaced config->getRoleNameByIndex (which returned the colorspace name, not the role name) with the following:

- getRoleName(int): get the role name at index, this will return values like 'scene_linear', 'compositing_log'. Returns NULL if index is out of range

- getRoleColorSpaceName(int): get the actual colorspace name at role index. Returns NULL when index is out of range

- getRoleColorSpaceName(char*): get the actual colorspace name from a role name. Returns NULL if roles is not defined
--snip--

https://github.com/malcolmhumphreys/OpenColorIO/commit/d7c8094f6aad57f980060e87d0f547ff36d844b7

.malcolm