Add Swift Package Manager support

[ffried]

Since #118 seems to be dead, I've created a new PR.

This adds full SPM support. The following changes were necessary:

• Add Package.swift file
• Move minizip model map and headers into "include" subdirectory (required by SPM)
• Work around some issues with not yet implemented APIs in corelibs-foundation (namely file creation and modification attributes and FileManager.urls(for:in:))
• Refactor test setup to work with SPM
• Generate LinuxMain files for SPM tests
• Let travis run tests with SPM
• Update README

[ffried]

Any news on this?

[ffried]

(cc @marmelroy)

[bryan1anderson]

please merge this

[choongng]

It seems @marmelroy is occupied with other things, I've merged this into my public fork and will continue maintenance there until they are back. https://github.com/choongng/Zip

[fl034]

@AvdLee could you merge this?

[AvdLee]

Looks good to me! As soon as CI succeeds, we can merge

[ffried]

@AvdLee Thanks for the review and for getting this on!
The CI seems to have stalled. I've added Swift 5.1 support for SPM as well (literally just a copy of the Package.swift declaring 5.1 tools). Let's see if the new CI build now works 🙂

[AvdLee]

Looks good! Merging in 🚀

[svoip]

@AvdLee Can you make a new release as well?
It seems package is being recognized, but not it is not yet aligned with the correct version of the library.
I am getting this error:

[mcritz]

@svoip Be sure you’re using the latest SPM tools. The top line of your Package.swift file should be:

// swift-tools-version:5.1

[ffried]

For now, you can also use master as target.
In Package.swift, you can use .branch("master") instead of from: "1.1.0" as target of your dependency.
In Xcode, you can select the target when adding the dependency as well.

[ffried]

Or use .revision("80b1c3005ee25b4c7ce46c4029ac3347e8d5e37e") if you want to stick to the current HEAD commit of the master branch. Be aware, though, that this might break once master progresses.

[AvdLee]

@ffried @mcritz I'm not actively working on this project and don't have the time to do a new release. Maybe @marmelroy can make a new release or make one of you capable to do that

[trevor-sonic]

I have same issue as @svoip .
I could use master but it is not ideal.
I'm using Xcode 11.3