Synthead , 10 months ago

Here’s an example of a PNG:

gitlab.freedesktop.org/…/freedesktop.org.xml.in#L…

This says that PNG files…

• Have a mime type of image/png
• Have a full name of "PNG image"
• Have an acronym of "PNG"
• Have an expanded acronym of "Portable Network Graphics"
• From byte 0, all PNG files have “\x89PNG\r\n\x1A\n” in the file content
• Match a file glob pattern of “*.png” (case insensitive)

There are hundreds of entries like this in the XML with formal categorization :)

It sounds like you’re trying to approach a solved problem, though. Why are you building a file list, and what are you going to use it for? What are you ultimately trying to do?