Improve xlsx support

libmat2/office.py

@@ -88,6 +88,10 @@ class MSOfficeParser(ZipParser):
             r'^(?:word|ppt|xl)/_rels/document\.xml\.rels$',
             r'^(?:word|ppt|xl)/_rels/footer[0-9]*\.xml\.rels$',
             r'^(?:word|ppt|xl)/_rels/header[0-9]*\.xml\.rels$',
+            r'^(?:word|ppt|xl)/charts/_rels/chart[0-9]+\.xml\.rels$',
+            r'^(?:word|ppt|xl)/charts/colors[0-9]+\.xml$',
+            r'^(?:word|ppt|xl)/charts/style[0-9]+\.xml$',
+            r'^(?:word|ppt|xl)/drawings/_rels/drawing[0-9]+\.xml\.rels$',
             r'^(?:word|ppt|xl)/styles\.xml$',
             # TODO: randomize axId ( https://docs.microsoft.com/en-us/openspecs/office_standards/ms-oi29500/089f849f-fcd6-4fa0-a281-35aa6a432a16 )
             r'^(?:word|ppt|xl)/charts/chart[0-9]*\.xml$',