1 files changed, 198 insertions, 0 deletions
diff --git a/MCServer/Plugins/InfoReg.lua b/MCServer/Plugins/InfoReg.lua
new file mode 100644
index 000000000..27e63aa5b
--- /dev/null
+++ b/MCServer/Plugins/InfoReg.lua
@@ -0,0 +1,198 @@
+
+-- InfoReg.lua
+
+-- Implements registration functions that process g_PluginInfo
+
+
+
+
+
+--- Lists all the subcommands that the player has permissions for
+local function ListSubcommands(a_Player, a_Subcommands, a_CmdString)
+	if (a_Player == nil) then
+		LOGINFO("The " .. a_CmdString .. " command requires another verb:")
+	else
+		a_Player:SendMessage("The " .. a_CmdString .. " command requires another verb:")
+	end
+	
+	-- Enum all the subcommands:
+	local Verbs = {};
+	for cmd, info in pairs(a_Subcommands) do
+		if (a_Player:HasPermission(info.Permission or "")) then
+			table.insert(Verbs, "  " .. a_CmdString .. " " .. cmd);
+		end
+	end
+	table.sort(Verbs);
+	
+	-- Send the list:
+	if (a_Player == nil) then
+		for idx, verb in ipairs(Verbs) do
+			LOGINFO(verb);
+		end
+	else
+		for idx, verb in ipairs(Verbs) do
+			a_Player:SendMessage(verb);
+		end
+	end
+end
+
+
+
+
+
+--- This is a generic command callback used for handling multicommands' parent commands
+-- For example, if there are "/gal save" and "/gal load" commands, this callback handles the "/gal" command
+-- It is used for both console and in-game commands; the console version has a_Player set to nil
+local function MultiCommandHandler(a_Split, a_Player, a_CmdString, a_CmdInfo, a_Level)
+	local Verb = a_Split[a_Level + 1];
+	if (Verb == nil) then
+		-- No verb was specified. If there is a handler for the upper level command, call it:
+		if (a_CmdInfo.Handler ~= nil) then
+			return a_CmdInfo.Handler(a_Split, a_Player);
+		end
+		-- Let the player know they need to give a subcommand:
+		ListSubcommands(a_Player, a_CmdInfo.Subcommands, a_CmdString);
+		return true;
+	end
+	
+	-- A verb was specified, look it up in the subcommands table:
+	local Subcommand = a_CmdInfo.Subcommands[Verb];
+	if (Subcommand == nil) then
+		if (a_Level > 1) then
+			-- This is a true subcommand, display the message and make MCS think the command was handled
+			-- Otherwise we get weird behavior: for "/cmd verb" we get "unknown command /cmd" although "/cmd" is valid
+			if (a_Player == nil) then
+				LOGWARNING("The " .. a_CmdString .. " command doesn't support verb " .. Verb)
+			else
+				a_Player:SendMessage("The " .. a_CmdString .. " command doesn't support verb " .. Verb)
+			end
+			return true;
+		end
+		-- This is a top-level command, let MCS handle the unknown message
+		return false;
+	end
+	
+	-- Check the permission:
+	if (a_Player ~= nil) then
+		if not(a_Player:HasPermission(Subcommand.Permission or "")) then
+			a_Player:SendMessage("You don't have permission to execute this command");
+			return true;
+		end
+	end
+	
+	-- If the handler is not valid, check the next sublevel:
+	if (Subcommand.Handler == nil) then
+		if (Subcommand.Subcommands == nil) then
+			LOG("Cannot find handler for command " .. a_CmdString .. " " .. Verb);
+			return false;
+		end
+		MultiCommandHandler(a_Split, a_Player, a_CmdString .. " " .. Verb, Subcommand, a_Level + 1);
+		return true;
+	end
+	
+	-- Execute:
+	return Subcommand.Handler(a_Split, a_Player);
+end
+
+
+
+
+
+--- Registers all commands specified in the g_PluginInfo.Commands
+function RegisterPluginInfoCommands()
+	-- A sub-function that registers all subcommands of a single command, using the command's Subcommands table
+	-- The a_Prefix param already contains the space after the previous command
+	-- a_Level is the depth of the subcommands being registered, with 1 being the top level command
+	local function RegisterSubcommands(a_Prefix, a_Subcommands, a_Level)
+		assert(a_Subcommands ~= nil);
+		
+		-- A table that will hold aliases to subcommands temporarily, during subcommand iteration
+		local AliasTable = {}
+		
+		-- Iterate through the subcommands, register them, and accumulate aliases:
+		for cmd, info in pairs(a_Subcommands) do
+			local CmdName = a_Prefix .. cmd;
+			local Handler = info.Handler;
+			-- Provide a special handler for multicommands:
+			if (info.Subcommands ~= nil) then
+				Handler = function(a_Split, a_Player)
+					return MultiCommandHandler(a_Split, a_Player, CmdName, info, a_Level);
+				end
+			end
+			
+			if (Handler == nil) then
+				LOGWARNING(g_PluginInfo.Name .. ": Invalid handler for command " .. CmdName .. ", command will not be registered.");
+			else
+				local HelpString;
+				if (info.HelpString ~= nil) then
+					HelpString = " - " .. info.HelpString;
+				else
+					HelpString = "";
+				end
+				cPluginManager.BindCommand(CmdName, info.Permission or "", Handler, HelpString);
+				-- Register all aliases for the command:
+				if (info.Alias ~= nil) then
+					if (type(info.Alias) == "string") then
+						info.Alias = {info.Alias};
+					end
+					for idx, alias in ipairs(info.Alias) do
+						cPluginManager.BindCommand(a_Prefix .. alias, info.Permission or "", Handler, HelpString);
+						-- Also copy the alias's info table as a separate subcommand,
+						-- so that MultiCommandHandler() handles it properly. Need to off-load into a separate table
+						-- than the one we're currently iterating and join after the iterating.
+						AliasTable[alias] = info
+					end
+				end
+			end  -- else (if Handler == nil)
+			
+			-- Recursively register any subcommands:
+			if (info.Subcommands ~= nil) then
+				RegisterSubcommands(a_Prefix .. cmd .. " ", info.Subcommands, a_Level + 1);
+			end
+		end  -- for cmd, info - a_Subcommands[]
+		
+		-- Add the subcommand aliases that were off-loaded during registration:
+		for alias, info in pairs(AliasTable) do
+			a_Subcommands[alias] = info
+		end
+		AliasTable = {}
+	end
+	
+	-- Loop through all commands in the plugin info, register each:
+	RegisterSubcommands("", g_PluginInfo.Commands, 1);
+end
+
+
+
+
+
+--- Registers all console commands specified in the g_PluginInfo.ConsoleCommands
+function RegisterPluginInfoConsoleCommands()
+	-- A sub-function that registers all subcommands of a single command, using the command's Subcommands table
+	-- The a_Prefix param already contains the space after the previous command
+	local function RegisterSubcommands(a_Prefix, a_Subcommands, a_Level)
+		assert(a_Subcommands ~= nil);
+		
+		for cmd, info in pairs(a_Subcommands) do
+			local CmdName = a_Prefix .. cmd;
+			local Handler = info.Handler
+			if (Handler == nil) then
+				Handler = function(a_Split)
+					return MultiCommandHandler(a_Split, nil, CmdName, info, a_Level);
+				end
+			end
+			cPluginManager.BindConsoleCommand(CmdName, Handler, info.HelpString or "");
+			-- Recursively register any subcommands:
+			if (info.Subcommands ~= nil) then
+				RegisterSubcommands(a_Prefix .. cmd .. " ", info.Subcommands, a_Level + 1);
+			end
+		end
+	end
+	
+	-- Loop through all commands in the plugin info, register each:
+	RegisterSubcommands("", g_PluginInfo.ConsoleCommands, 1);
+end
+
+
+
+