Am 07.01.2018 um 16:54 schrieb Eliot Jones:
I have been migrating PDFBox to C# in order to provide an Apache 2.0 licensed
solution for working with PDFs in C#.
Cool, there a a lot of people asking for a .NET version.
Repository is here: https://github.com/UglyToad/Pdf
What PDFBox version is the base for your port, trunk or 2.0.x?
I am almost at the point where I intend to release an alpha version of the
software to NuGet (Maven equivalent).
I wanted to check what conditions were necessary/polite for releasing this
derivative work.
IANAL, but I try to answer your questions as good as possible
* I am keeping the Apache 2.0 license but should the copyright in my
license be the copyright from the PDFBox version of the license?
The PDFBox PMC still owns the copyright of the origin code. IMHO even ported
code is still copyrighted by us, as long as the ported code is similar to the
origin one. If you add some substantial changes to the code, you might *add*
your own copyright to that part of the code. All new classes are of course
yours. And the port as a whole (our code, your changes and your additions) is a
derivative work and you may the copyright for that as a whole.
* Additionally I assume I must redistribute the NOTICES.txt file present
in the PDFBox code?
That would be nice. You might remove those parts which are not ported to .NET
* On naming, I was intending to rename the project (not sure what name
yet) to indicate that much of the code has been rewritten and it’s not an
official port. This will prevent people filing bugs (of which my version will
have many) with PDFBox. Is this ok or would this be considered bad etiquette?
Good idea, it will make it easier to separate both projects. As you already did
so, IMHO there is no need for further changes.
Furthermore "PDFBox" is a registered trademark ;-)
* Are there any other steps I should take to release a work derived from
PDFBox and managed by the Apache Foundation?
You already mentioned the origin of your port (it is not necessary but highly
appreciated) so that we get the credits for the work of our community.
Are you interested in being "promoted" by us if someone asks for a .NET port,
e.g. we could mention the port somewhere at a more or less prominent place on
our website?
Are you planning to monitor our changes and port them as well to your codebase?
Andreas
Many thanks,
Eliot Jones
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