I have a PDF file with the font mapping for GT fonts to TRON character code; for some reason this data does not seem to be included in the fonts themself and is

I have a PDF file with the font mapping for GT fonts to TRON character code; for some reason this data does not seem to be included in the fonts themself and is not available as CSV and stuff like that. (The PDF file has many pages and would take too long to enter them manually.) I had tried other ways to convert the data but it did not seem to work. (Somehow, the characters are split across several fonts, and mapped to Unicode code points which seem to have no relation to the character that is mapped there nor to the TRON character code for that character.) Your repository says it depends on Docling but the link for Docling doesn't work.