Seems being a quite weird thing after internal exploration :
Moodle 2 standard format backup process stores format data information into the course/course.xml file. This is noticeable by a plugin_format_<formatname>_course subhierarchy in the course.xml flow.
this file is produced by the moodle1_course_header_handler class when scheduled by the Moodle XML Parser, but is closed when the last closing <HEADER> xml tag is found in original XML, that is : before format data come to be avaiable.
so there seems being a structural impossibility to process and merge this information unless delaying the course.xml construction to a very late instant (f.e. : on COURSE closing tag at the end of the parsing). Fortunately I could watch that the course.xml content was made one shot from a $this->course hierarchical structure, built by the handler. Unfortunately did not found already where and how to plug code to :
- delay the actual production of the course.xml content file
- collect and parse at the most accurate moment the formatdata information
- be capable to append the collected data to the course structure/.
more news later.....