Support ISO9660 files

[LubosD]

Consider supporting ISO9660 files, since many .dmg files are in fact .iso files.

This is also quite useful for Darling's hdiutil in general.

[tomkoen]

LubosD there're also FAT32 dmg images (created from hard drives with disk utility)

[LubosD]

Oh my... do you have any of those handy?

[tomkoen]

No, but it can be easily created with Disk Utility on Mac, for example from a USB flash drive, also with compression

[LubosD]

Do you think any of these are in the wild? Meaning someone is actually distributing such dmgs?

[tomkoen]

Well, not regularly. You may not find them easy in Internet, but users sometimes backup their drives using Disk Utility (as they don't have much alternatives in OS X)

[tomkoen]

At least darling-dmg could offer some handling/fallback for such files

[tomkoen]

A good piece of code to implement ISO 9660/UDF right aray:
https://github.com/kindahl/ckfilesystem