Added Utils.loadNamespace

Deleted the previous Concord.loadComponents/Systems/Worlds

concord/utils.lua

@@ -7,9 +7,56 @@ local Utils = {}
 -- @param orig Table to copy
 -- @param target Table to append to
 function Utils.shallowCopy(orig, target)
-	for key, value in pairs(orig) do
-		target[key] = value
-	end
+   for key, value in pairs(orig) do
+      target[key] = value
+   end
+end
+
+--- Requires files and puts them in a table.
+-- Accepts a table of paths to Lua files: {"path/to/file_1", "path/to/another/file_2", "etc"}
+-- Accepts a path to a directory with Lua files: "my_files/here"
+-- @param pathOrFiles The table of paths or a path to a directory.
+-- @param namespace A table that will hold the required files
+-- @treturn table The namespace table
+function Utils.loadNamespace(pathOrFiles, namespace)
+   if (type(pathOrFiles) ~= "string" and type(pathOrFiles) ~= "table") then
+       error("bad argument #1 to 'loadNamespace' (string/table of strings expected, got "..type(pathOrFiles)..")", 2)
+   end
+
+   if (type(pathOrFiles) == "string") then
+       local info = love.filesystem.getInfo(pathOrFiles) -- luacheck: ignore
+       if (info == nil or info.type ~= "directory") then
+            error("bad argument #1 to 'loadNamespace' (path '"..pathOrFiles.."' not found)", 2)
+       end
+
+       local files = love.filesystem.getDirectoryItems(pathOrFiles)
+
+       for _, file in ipairs(files) do
+            local name = file:sub(1, #file - 4)
+            local path = pathOrFiles.."."..name
+
+            local value = require(path)
+            if namespace then namespace[name] = value end
+       end
+   elseif (type(pathOrFiles == "table")) then
+       for _, path in ipairs(pathOrFiles) do
+            if (type(path) ~= "string") then
+                error("bad argument #2 to 'loadNamespace' (string/table of strings expected, got table containing "..type(path)..")", 2) -- luacheck: ignore
+            end
+
+            local name = path
+
+            local dotIndex, slashIndex = path:match("^.*()%."), path:match("^.*()%/")
+            if (dotIndex or slashIndex) then
+                name = path:sub((dotIndex or slashIndex) + 1)
+            end
+
+            local value = require(path)
+            if namespace then namespace[name] = value end
+       end
+   end
+
+   return namespace
 end
 
 return Utils