Changeset

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/configmanager.lua	Fri Nov 21 05:47:27 2008 +0000
@@ -0,0 +1,105 @@
+
+local _G = _G;
+module "configmanager"
+
+local parsers = {};
+
+local config = { ["*"] = { core = {} } };
+
+local global_config = config["*"];
+
+-- When host not found, use global
+setmetatable(config, { __index = function () return global_config; end});
+local host_mt = { __index = global_config };
+
+-- When key not found in section, check key in global's section
+function section_mt(section_name)
+	return { __index = 	function (t, k)
+									local section = rawget(global_config, section_name);
+									if not section then return nil; end
+									return section[k];
+							end };
+end
+
+function get(host, section, key)
+	local sec = config[host][section];
+	if sec then
+		return sec[key];
+	end
+	return nil;
+end
+
+function set(host, section, key, value)
+	if host and section and key then
+		local hostconfig = rawget(config, host);
+		if not hostconfig then
+			hostconfig = rawset(config, host, setmetatable({}, host_mt))[host];
+		end
+		if not rawget(hostconfig, section) then
+			hostconfig[section] = setmetatable({}, section_mt(section));
+		end
+		hostconfig[section][key] = value;
+		return true;
+	end
+	return false;
+end
+
+function load(filename, format)
+	if parsers[format] and parsers[format].load then
+		local f = io.open(filename);
+		if f then 
+			local ok, err = parsers[format](f:read("*a"));
+			f:close();
+			return ok, err;
+		end
+	end
+	return false, "no parser";
+end
+
+function save(filename, format)
+end
+
+function addparser(format, parser)
+	if format and parser then
+		parsers[format] = parser;
+	end
+end
+
+do
+	parsers.lua = {};
+	function parsers.lua.load(data)
+		local env = setmetatable({}, { __index = function (t, k)
+											if k:match("^mod_") then
+												return function (settings_table)
+															config[__currenthost or "*"][k] = settings_table;
+														end;
+											end
+											return rawget(_G, k);
+										end});
+		
+		function env.Host(name)
+			env.__currenthost = name;
+		end
+		
+		local chunk, err = loadstring(data);
+		
+		if not chunk then
+			return nil, err;
+		end
+		
+		setfenv(chunk, env);
+		
+		local ok, err = pcall(chunk);
+		
+		if not ok then
+			return nil, err;
+		end
+		
+		
+		
+		return true;
+	end
+	
+end
+
+return _M;
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test_core_configmanager.lua	Fri Nov 21 05:47:27 2008 +0000
@@ -0,0 +1,28 @@
+
+function get(get, config)
+	config.set("example.com", "test", "testkey", 123);
+	assert_equal(get("example.com", "test", "testkey"), 123, "Retrieving a set key");
+
+	config.set("*", "test", "testkey1", 321);
+	assert_equal(get("*", "test", "testkey1"), 321, "Retrieving a set global key");
+	assert_equal(get("example.com", "test", "testkey1"), 321, "Retrieving a set key of undefined host, of which only a globally set one exists");
+	
+	config.set("example.com", "test", ""); -- Creates example.com host in config
+	assert_equal(get("example.com", "test", "testkey1"), 321, "Retrieving a set key, of which only a globally set one exists");
+	
+	assert_equal(get(), nil, "No parameters to get()");
+	assert_equal(get("undefined host"), nil, "Getting for undefined host");
+	assert_equal(get("undefined host", "undefined section"), nil, "Getting for undefined host & section");
+	assert_equal(get("undefined host", "undefined section", "undefined key"), nil, "Getting for undefined host & section & key");
+
+	assert_equal(get("example.com", "undefined section", "testkey"), nil, "Defined host, undefined section");
+end
+
+function set(set, u)
+	assert_equal(set("*"), false, "Set with no section/key");
+	assert_equal(set("*", "set_test"), false, "Set with no key");	
+
+	assert_equal(set("*", "set_test", "testkey"), true, "Setting a nil global value");
+	assert_equal(set("*", "set_test", "testkey", 123), true, "Setting a global value");
+end
+