MobileRead Forums - View Single Post - Thoughts on new epub3 tool: generate guide from Landmarks

KevinH · 07-11-2019, 11:49 AM

Okay checked the wrapper.py code and if no file in the manifest has the correct mimetype for the ncx ("application/x-dtbncx+xml"), it will return a python None, not a empty string. And this case of no ncx is already properly handled when rebuilding the spine attributes.

So to detect if an epub3 has an ncx or not, you can check the return value against None.

Code:

    def gettocid(self):
        for id in self.id_to_mime:
            mime = self.id_to_mime[id]
            if mime == "application/x-dtbncx+xml":
	        return id
        return None

07-11-2019, 11:49 AM	#30
KevinH Sigil Developer Posts: 8,816 Karma: 6000000 Join Date: Nov 2009 Device: many	Okay checked the wrapper.py code and if no file in the manifest has the correct mimetype for the ncx ("application/x-dtbncx+xml"), it will return a python None, not a empty string. And this case of no ncx is already properly handled when rebuilding the spine attributes. So to detect if an epub3 has an ncx or not, you can check the return value against None. Code: def gettocid(self): for id in self.id_to_mime: mime = self.id_to_mime[id] if mime == "application/x-dtbncx+xml": return id return None Last edited by KevinH; 07-11-2019 at 11:52 AM.