Fix page order and bookmarks by renaming numerically

[axu2]

Fix Page Order Issue:

• Fixes Renaming problem #362
• fixes Pages outputted as out of order. #409

Fix various bookmark issues due to kcc-b logic:

(I suspect larger files made by comicrack are more likely to have bookmarks that cause issues).

• fixes Question: ComicRacket metadata page numbering #339
• fixes [5.5.2/Win] Large .cbz conversion #345
• fixes List Index Out Of Range #368
• fixes Large files cannot be converted #396
• fixes The bookmark function cannot be used for epub using the new firmware of kobo4.32 #418
• fixes Error during conversion list index out of range #556
• fixes Incorrect table of contents if "Rotate and split" is chosen #558

Don't rename files with slugify and fix the bookmark drift issue.

Hasn't caused any issues in the files I've tested however, with flat files and subdirectories.

@cyberbad @4AM-Campfire @VictorGamerLOL @Scotsguy @tao-cumplido @ahihh @noahastor @Jhoelious @crevopunch @augustebaum @origaniels

#46 seems related

[axu2]

Here's a file I used for testing has special characters, whitespace, japanese:
crop jpg.zip

Make sure generated file confirms to EPUB 3.3 https://github.com/w3c/epubcheck

[axu2]

Main issue is with files with a # character, which is really low in the ascii sort order. It's above whitespace but below underscore _ and dash - which slugify transforms between.

[axu2]

My conclusion: slugify was needed to conform to EPUB standards. But will re-order files.

Only solution is to completely re-name files like mangle. But realistically, no one cares what the filenames are after conversion.

[axu2]

Decided to rename pages numerically 0000.jpg 0001.jpg etc. We actually already do this for KOBO.

[axu2]

Can delete this:

            while os.path.exists(os.path.join(root, slugified + splitname[1])) and splitname[0].upper()\
                    != slugified.upper():
                slugified += "A"

since we aren't preserving original names at all anymore. We might have issues with files that look like 0000-kcc.jpg originally, but that's an expected error, if someone is re-processing KCC files somehow by mistake and the UI will warn issues might happen.

Added KCC to start and end of file.

[darodi]

@axu2
is kindlecomicconverter.comic2ebook.sanitizeTreeKobo still needed if all files are renamed with a counter?

[axu2]

Oh that's right, we can remove the Kobo one too since they are doing the same thing now.

[axu2]

Thank you to @vinhtq115 for extensive testing in #558

Looks like this now: