Clean up console core (#3592)

* Cleanup console.lua code + small fixes

* Push tokenized commands to hook

* Change tokenized commands to hash table + clean up tokenization function

* Switch back to sequential + small optimization

* What is this symbol for?

* Change text a bit

Author: Astralcircle

lua/entities/gmod_wire_expression2/core/console.lua

@@ -1,34 +1,44 @@
-/******************************************************************************\
-  Console support
-\******************************************************************************/
+--
+-- Console support
+--
 
 E2Lib.RegisterExtension("console", true, "Lets E2 chips run concommands and retrieve convars")
 
-local function tokenizeAndGetCommands(str)
+local function tokenizeAndGetCommands(concmd)
 	-- Tokenize!
 	local tokens = {}
 	local curtoken = {}
 	local escaped = false
-	for i=1, #str do
-		local char = string.sub(str, i, i)
+
+	for i = 1, #concmd do
+		local char = string.sub(concmd, i, i)
+
 		if (escaped and char ~= "\"") or string.match(char, "[%w+-]") then
-			curtoken[#curtoken + 1] = char
+			table.insert(curtoken, char)
 		else
-			if #curtoken>0 then tokens[#tokens + 1] = table.concat(curtoken) curtoken = {} end
+			if #curtoken > 0 then
+				table.insert(tokens, table.concat(curtoken))
+				curtoken = {}
+			end
+
 			if char == "\"" then
 				escaped = not escaped
 			elseif char ~= " " then
-				tokens[#tokens + 1] = char
+				table.insert(tokens, char)
 			end
 		end
 	end
-	if #curtoken>0 then tokens[#tokens+1] = table.concat(curtoken) end
+
+	if #curtoken > 0 then
+		table.insert(tokens, table.concat(curtoken))
+	end
 
 	-- Get table of commands used
 	local commands = {tokens[1] or ""}
-	for i=1, #tokens do
+
+	for i = 1, #tokens do
 		if tokens[i]==";" then
-			commands[#commands + 1] = tokens[i+1] or ""
+			table.insert(commands, tokens[i + 1])
 		end
 	end
 
@@ -38,17 +48,15 @@ end
 ---@param cvar "wire_expression2_concmd_whitelist"|"wire_expression2_convar_whitelist"
 ---@return table whitelist # Whitelist for specific commands, if empty, disregard whitelist and allow everything
 local function getWhitelist(ply, cvar)
-	local whitelist = (ply:GetInfo(cvar) or ""):Trim()
+	local whitelist = {}
 
-	local whitelistTbl = {}
-
-	for k, v in pairs(string.Split(whitelist, ",")) do
-		if v~="" then
-			whitelistTbl[v] = true
+	for _, v in ipairs(string.Split(string.Trim(ply:GetInfo(cvar)), ",")) do
+		if v ~= "" then
+			whitelist[v] = true
 		end
 	end
 
-	return whitelistTbl
+	return whitelist
 end
 
 local function checkConCmd(self, cmd)
@@ -61,17 +69,18 @@ local function checkConCmd(self, cmd)
 	if ply:GetInfoNum("wire_expression2_concmd", 0) == 0 then return self:throw("Concmd is disabled through wire_expression2_concmd", false) end
 	if IsConCommandBlocked(cmd) then return self:throw("This concmd is blacklisted by gmod, see https://wiki.facepunch.com/gmod/Blocked_ConCommands", false) end
 
-	if hook.Run( "Expression2_CanConCmd", ply, cmd ) == false then
+	if hook.Run("Expression2_CanConCmd", ply, cmd) == false then
         return self:throw("Command '" .. cmd .. "' was blocked by the server. ", false)
     end
 
 	local whitelist = getWhitelist(ply, "wire_expression2_concmd_whitelist")
 	if table.IsEmpty(whitelist) then return true end
 
 	local commands = tokenizeAndGetCommands(cmd)
-	for _, command in pairs(commands) do
+
+	for _, command in ipairs(commands) do
 		if not whitelist[command] then
-			return self:throw("Command '" .. command .. "' is not whitelisted w/ wire_expression2_concmd_whitelist", false)
+			return self:throw("Command '" .. command .. "' is not whitelisted in wire_expression2_concmd_whitelist", false)
 		end
 	end
 
@@ -86,19 +95,20 @@ local function checkConVar(self, var)
 	if ply:GetInfoNum("wire_expression2_convar", 0) == 0 then return self:throw("Convar is disabled through wire_expression2_convar", false) end
 	var = var:match("%s*([%w_]+)%s*")
 
+	if hook.Run("Expression2_CanConVar", ply, var) == false then
+        return self:throw("Convar '" .. var .. "' was blocked by the server. ", false)
+    end
+
 	local whitelist = getWhitelist(ply, "wire_expression2_convar_whitelist")
 	if table.IsEmpty(whitelist) then return true end
 
-	if whitelist[var] == nil then return self:throw("Convar '" .. var .. "' is not whitelisted w/ wire_expression2_convar_whitelist ", false) end
-
-    if hook.Run("Expression2_CanConVar", ply, var) == false then
-        return self:throw("Convar '" .. var .. "' was blocked by the server. ", false)
-    end
+	if whitelist[var] == nil then
+		return self:throw("Convar '" .. var .. "' is not whitelisted in wire_expression2_convar_whitelist ", false)
+	end
 
 	return true
 end
 
-
 __e2setcost(5)
 
 e2function number concmd(string command)
@@ -118,11 +128,10 @@ e2function number convarnum(string cvar)
 end
 
 e2function number maxOfType(string typename)
-	if typename == "wire_holograms" then return GetConVarNumber("wire_holograms_max") or 0 end
-	return GetConVarNumber("sbox_max"..typename) or 0
+	if typename == "wire_holograms" then return cvars.Number("wire_holograms_max", 0) end
+	return cvars.Number("sbox_max" .. typename, 0)
 end
 
 e2function number playerDamage()
-	local ret = GetConVarNumber("sbox_playershurtplayers") or 0
-	return ret ~= 0 and 1 or 0
+	return cvars.Bool("sbox_playershurtplayers") and 1 or 0
 end