Mercurial > wow > askmrrobot
comparison Libs/LibStub/LibStub.lua @ 3:e75889a45130
Attempt to fix curse
| author | Adam tegen <adam.tegen@gmail.com> |
|---|---|
| date | Tue, 20 May 2014 23:30:59 -0500 |
| parents | |
| children | 01b63b8ed811 |
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| 2:165752e9b22a | 3:e75889a45130 |
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| 1 -- $Id: LibStub.lua 76 2007-09-03 01:50:17Z mikk $ | |
| 2 -- LibStub is a simple versioning stub meant for use in Libraries. http://www.wowace.com/wiki/LibStub for more info | |
| 3 -- LibStub is hereby placed in the Public Domain | |
| 4 -- Credits: Kaelten, Cladhaire, ckknight, Mikk, Ammo, Nevcairiel, joshborke | |
| 5 local LIBSTUB_MAJOR, LIBSTUB_MINOR = "LibStub", 2 -- NEVER MAKE THIS AN SVN REVISION! IT NEEDS TO BE USABLE IN ALL REPOS! | |
| 6 local LibStub = _G[LIBSTUB_MAJOR] | |
| 7 | |
| 8 -- Check to see is this version of the stub is obsolete | |
| 9 if not LibStub or LibStub.minor < LIBSTUB_MINOR then | |
| 10 LibStub = LibStub or {libs = {}, minors = {} } | |
| 11 _G[LIBSTUB_MAJOR] = LibStub | |
| 12 LibStub.minor = LIBSTUB_MINOR | |
| 13 | |
| 14 -- LibStub:NewLibrary(major, minor) | |
| 15 -- major (string) - the major version of the library | |
| 16 -- minor (string or number ) - the minor version of the library | |
| 17 -- | |
| 18 -- returns nil if a newer or same version of the lib is already present | |
| 19 -- returns empty library object or old library object if upgrade is needed | |
| 20 function LibStub:NewLibrary(major, minor) | |
| 21 assert(type(major) == "string", "Bad argument #2 to `NewLibrary' (string expected)") | |
| 22 minor = assert(tonumber(strmatch(minor, "%d+")), "Minor version must either be a number or contain a number.") | |
| 23 | |
| 24 local oldminor = self.minors[major] | |
| 25 if oldminor and oldminor >= minor then return nil end | |
| 26 self.minors[major], self.libs[major] = minor, self.libs[major] or {} | |
| 27 return self.libs[major], oldminor | |
| 28 end | |
| 29 | |
| 30 -- LibStub:GetLibrary(major, [silent]) | |
| 31 -- major (string) - the major version of the library | |
| 32 -- silent (boolean) - if true, library is optional, silently return nil if its not found | |
| 33 -- | |
| 34 -- throws an error if the library can not be found (except silent is set) | |
| 35 -- returns the library object if found | |
| 36 function LibStub:GetLibrary(major, silent) | |
| 37 if not self.libs[major] and not silent then | |
| 38 error(("Cannot find a library instance of %q."):format(tostring(major)), 2) | |
| 39 end | |
| 40 return self.libs[major], self.minors[major] | |
| 41 end | |
| 42 | |
| 43 -- LibStub:IterateLibraries() | |
| 44 -- | |
| 45 -- Returns an iterator for the currently registered libraries | |
| 46 function LibStub:IterateLibraries() | |
| 47 return pairs(self.libs) | |
| 48 end | |
| 49 | |
| 50 setmetatable(LibStub, { __call = LibStub.GetLibrary }) | |
| 51 end |