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While Rift has a built-in version checking system, LibStub is primarily designed to do two things:
LibStub is a minimalistic versioning library that allows other libraries to easily register themselves and upgrade. It is meant to be a cross-community library sharing system.
LibStub is hereby placed in the Public Domain
Credits: Kaelten, Cladhaire, ckknight, Mikk, Ammo, Nevcairiel, joshborke
This is a port of LibStub to Rift by Lorandii aka Myrroddin.
rift.curseforge.com is the main development hub; however, so I don't have to look all over the place to find bug reports or suggestions, please post a comment on the riftui.com LibStub page.
While it is not strictly necessary, in your RiftAddon.toc, please add "Lib" to indicate to everybody, both authors and end users, that your file is indeed a library.
Identifier = "LibMyLibrary" Name = "Lib: MyLibrary"
Returns
The table instance of a registered library or nil if not found and the minor version of the library as the second return value.
Arguments
major The name of the library you are requesting
silent (Optional) Suppresses errors when the library is not found
Returns
An iterator over the registered major libraries.
Returns
The table to be used by the library as well as the minor version of the previously registered library, if any.
Arguments
major The name of the library you are requesting
minor The minor for the registering library
if using the CurseForge repositories
otherwise
if using the CurseForge repositories
otherwise
local lib = LibStub:NewLibrary("MyLibrary-1.0", 1) if not lib then return -- already loaded and no upgrade necessary end lib.somearray = lib.somearray or {} local context = UI.CreateContext("Context") if not lib.frame then lib.frame = UI.CreateFrame("Frame", "Frame", context) end function lib:SomeFunction() -- do stuff here end function lib:SomeOtherFunction() -- do other stuff here end
Using revision control system tags for minor version
local lib = LibStub:NewLibrary("MyLibrary-1.0", "$Revision: 12345$")
Do be aware that moving a library from one repository to another will change revision numbers. Do not ever let it slide backwards. If you are caught in this situation, you might want to use something like:
local lib = LibStub:NewLibrary("MyLibrary-1.0", 12345+tonumber(string.match("%d+","$Revision: 2$")) )
Embedding / Mixing in
This is a convention rather than a function of the specification, but all Ace3 and Rock related libraries use the following semantics for doing embedding / mixing in (specifically, libraries with an .Embed() member can be specified as embeds during addon object creation rather than having to embed them explicitly):
lib.mixinTargets = lib.mixinTargets or {} local mixins = {"SomeFunction", "SomeOtherFunction" } function lib:Embed(target) for _,name in pairs(mixins) do target[name] = lib[name] end lib.mixinTargets[target] = true end
... and at the end of the file, we handle library upgrades by simply re-embedding the library in all positions where it has previously been embedded / mixed in:
for target,_ in pairs(mixinTargets) do lib:Embed(target) end
About Project
Created: September 21st 2023
Updated: September 21st 2023
Project ID: 61794
License: All Rights Reserved
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September 21st 2023
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