[lokisetup] plugins in SETUP_2_0...

[Ryan C. Gordon]

> I haven't yet completely thought out what we're gonna do about the file 
> I/O API. I was going to first focus on the GUI abstraction. You are 
> welcome to start working on the plugin changes if you want, as we can 
> probably reconcile the two later provided they have decent APIs.

Here's a first shot to give y'all an idea of where I'm going with this. 
This won't compile, but it's roughly what I'm thinking of doing.

This is the high-level code, and one plugin converted to the new format 
(the .uz2 plugin). I chose this plugin because it's about as simple as 
you can get...counting comments and blank lines, it's about 75 lines of 
code, 25 codes of boiler-plate stuff, and a few lines to eventually be 
moved to the higher level.

Eventually, the app will call copy_archive() for each item in a given 
<files> tag, and that's it. The other copy_* functions can eventually be 
deleted, since recursing directories and uncompressed files and 
wildcards will all be handled under copy_archive() and various "plugins".

This is very much NOT ready to go into revision control; however, 
comments are welcome before this goes further and I inadvertently paint 
myself into a corner.

--ryan.


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