modutils.lua updated, whitespace-fixes

init.lua

@@ -7,7 +7,7 @@ depmod = modutils.get_depmod("carpets")
 function carpet.enabledfilter(name, def)
 -- disable carpets from loaded modules but not defined in dependency
 	if depmod.check_depmod(name) == false then  
-	        return false
+		return false
 	end
 
 -- disable carpets for blocks without description
@@ -16,19 +16,19 @@ function carpet.enabledfilter(name, def)
 	end
 
 -- not supported node types for carpets
-        if def.drawtype == "liquid"     or
+	if def.drawtype == "liquid"     or
 	   def.drawtype == "firelike"   or
-           def.drawtype == "airlike"    or 
-           def.drawtype == "plantlike"  or 
-           def.drawtype == "nodebox"  or 
+	   def.drawtype == "airlike"    or
+	   def.drawtype == "plantlike"  or
+	   def.drawtype == "nodebox"  or
 	   def.drawtype == "raillike"   then
-                return false
-        end
+		return false
+	end
 
 -- no carpet for signs, rail, ladder
-        if def.paramtype2 == "wallmounted" then
-                return false
-        end
+	if def.paramtype2 == "wallmounted" then
+		return false
+	end
 
 -- all checks passed
 	return true

modutils.lua

@@ -5,41 +5,45 @@ function modutils.get_depmod(modname)
 
 -- Definition of returning object attributes
 	local depmod = {
-        	modname,      -- module name from get_depmod
+		modname,      -- module name from get_depmod
 		deplist = {}, -- depends.txt parsed
-              }
+	}
 
 
 -- Definition of returning object methods
-        function depmod.check_depmod(checknode)
---        check if the node (checknode) is from dependent module
-        	local delimpos = string.find(checknode, ":")
-                if delimpos then
-                	local checkmodname = string.sub(checknode, 1,  delimpos - 1)
-                        for name, ref in pairs(depmod.deplist) do
-                        	if name == checkmodname then
-                                	return true
-                                end
-                        end
-                        return false
-                end
-        end
+	function depmod.check_depmod(checknode)
+		-- check if the node (checknode) is from dependent module
+		local delimpos = string.find(checknode, ":")
+		if delimpos then
+			local checkmodname = string.sub(checknode, 1,  delimpos - 1)
+			for name, ref in pairs(depmod.deplist) do
+				if name == checkmodname then
+					return true
+				end
+			end
+			return false
+		end
+	end
 
 -- Full returning object attributes
 	depmod.modname = modname
 
 -- local variable definition
-        local depentry = {} -- Entry in deplist
+	local depentry = {} -- Entry in deplist
 	local depmodname -- temp value
-	local dependsfile = io.open(minetest.get_modpath(modname).."/depends.txt")
+	local modpath = minetest.get_modpath(modname)
+	if not modpath then
+		return nil -- module not found
+	end
+	local dependsfile = io.open(modpath.."/depends.txt")
 	if dependsfile then
 		for dependsline in dependsfile:lines() do
 			if  string.sub(dependsline, -1) == "?" then
 				depentry.required = false
-                                depmodname = string.sub(dependsline, 1, -2)
+				depmodname = string.sub(dependsline, 1, -2)
 			else
 				depentry.required = true
-                                depmodname = dependsline
+				depmodname = dependsline
 			end
 			depmod.deplist[depmodname] = depentry
 		end