path: root/src/cratera.cratera.d/lib.cratera

--[[
    Cratera Library
    Copyright (C) 2024  Soni L.

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
--]]

local cratera_env = _G
local cratera_loader_base = cratera_env.load

-- only use setfenv if load doesn't support env argument
local setfenv = (lua.loadstring or lua.load)("return setfenv", nil, nil, {})()

function cratera_env.load(chunk, chunkname, mode, env)
    if env == nil then
        env = cratera_env
    end
    local func, err = cratera_loader_base(chunk, chunkname, mode, env)
    if setfenv and func and env then
        setfenv(func, env)
    end
    -- arity adjustments
    if func then
        return func
    else
        return func, err
    end
end