Load Lua-files by relative path

Question

If I have a file structure like this:

./main.lua
./mylib/mylib.lua
./mylib/mylib-utils.lua
./mylib/mylib-helpers.lua
./mylib/mylib-other-stuff.lua
         


        

Answer 1

I'm using the following snippet. It should work both for files loaded with require, and for files called via the command line. Then use requireRel instead of require for those you wish to be loaded with a relative path.

local requireRel
if arg and arg[0] then
    package.path = arg[0]:match("(.-)[^\\/]+$") .. "?.lua;" .. package.path
    requireRel = require
elseif ... then
    local d = (...):match("(.-)[^%.]+$")
    function requireRel(module) return require(d .. module) end
end