Exported UTI for package/bundle

bundle, cocoa, macos, uti

Solution

Trial-and-error findings:

Is this considered a proprietary format that needs to be exported via Exported UTIs (`UTExportedTypeDeclarations`)?

Yes. While I couldn't find any explicit mention of this in the documentation, exporting the type was necessary for Finder to treat the directories as packages.

- Conforms To (`UTTypeConformsTo`)

`com.apple.package` (source)

- Mime Types (`public.mime-type`)

Empty. Directories don't have a Mime Type?

- Pboard Types (`com.apple.nspboard-type`)

Empty. Pboard Types are deprecated?

- OS Types (`com.apple.ostype`)

No clue.

Finally, does the Exported UTI identifier (`UTTypeIdentifier`) need to be the same value than the Document Type identifier (`LSItemContentTypes`)?

Yes, but I couldn't find any explicit mention of this in the documentation.

Problem

My Cocoa document-based app opens and writes custom packages/bundles. Is this considered a proprietary format that needs to be exported via Exported UTIs (`UTExportedTypeDeclarations`)? If so, what should be the values for: - Conforms To (`UTTypeConformsTo`) - Mime Types (`public.mime-type`) - Pboard Types (`com.apple.nspboard-type`) - OS Types (`com.apple.ostype`) Finally, does the Exported UTI identifier (`UTTypeIdentifier`) need to be the same value than the Document Type identifier (`LSItemContentTypes`)?

Original source