I can’t find an appropriate file that matches up with what the book describes. I’m looking at page 46 in Chapter 3 where it instructs you to download a mime.txt file from the IANA website that should contain a text file mapping mime types to their extension. The format described has a mime type on each line, with a tab separating the name and extensions, and a comma separating each of the individual extensions for a type.
The page linked in the book is here: https://www.iana.org/assignments/media-types/media-types.xhtml
The plain text link on that page is: https://www.iana.org/assignments/media-types/media-types.txt
Even using the wayback machine as far back as 2014 I’m not able to see anything that is tab/comma/newline delimeted for type => extensions. Everything is in the format: [Name] [Template] [Reference]. I don’t see anywhere where I can even do some by-hand parsing to get what’s described in the book.
Should the link provided be something different? I’ve also tried googling and can’t find one matching the format. Am I looking in the wrong place or does the book contain the incorrect link?