moonloader/lib/SFlua/addition.lua

--[[
    Project: SF.lua <https://github.com/imring/SF.lua>
    License: GNU General Public License v3.0
    Authors: look in file <AUTHORS>.
]]

local ffi = require("ffi")
local bit = require("bit")

local add = {}

function add.GET_POINTER(cdata)
    return tonumber(ffi.cast("uintptr_t", ffi.cast("void *", cdata)))
end

function add.explode_color(color)
    local a = bit.band(bit.rshift(color, 24), 0xFF)
    local r = bit.band(bit.rshift(color, 16), 0xFF)
    local g = bit.band(bit.rshift(color, 8), 0xFF)
    local b = bit.band(color, 0xFF)
    return a, r, g, b
end

function add.join_color(a, r, g, b)
    local color = b  -- b
    color = bit.bor(color, bit.lshift(g, 8))  -- g
    color = bit.bor(color, bit.lshift(r, 16)) -- r
    color = bit.bor(color, bit.lshift(a, 24)) -- a
    return color % 0x100000000
end

function add.convertARGBToRGBA(color)
    local a, r, g, b = add.explode_color(tonumber(color))
    return add.join_color(r, g, b, a)
end

function add.convertRGBAToARGB(color)
    local r, g, b, a = add.explode_color(tonumber(color))
    return add.join_color(a, r, g, b)
end

function add.convertABGRtoARGB(color)
    local a, r, g, b = add.explode_color(tonumber(color))
    return add.join_color(a, b, g, r)
end

function string.split(str, delim, plain)
    local tokens, pos, i, plain = {}, 1, 1, not (plain == false)
    repeat
        local npos, epos = str:find(delim, pos, plain)
        tokens[i] = str:sub(pos, npos and npos - 1)
        pos = epos and epos + 1
        i = i + 1
    until not pos
    return tokens
end

return add