modlib/mod.lua
2021-06-17 19:45:08 +02:00

149 lines
4.9 KiB
Lua

-- Localize globals
local Settings, _G, assert, dofile, error, getmetatable, ipairs, loadfile, loadstring, minetest, modlib, pairs, rawget, rawset, setfenv, setmetatable, tonumber, type = Settings, _G, assert, dofile, error, getmetatable, ipairs, loadfile, loadstring, minetest, modlib, pairs, rawget, rawset, setfenv, setmetatable, tonumber, type
-- Set environment
local _ENV = {}
setfenv(1, _ENV)
function loadfile_exports(filename)
local env = setmetatable({}, {__index = _G})
local file = assert(loadfile(filename))
setfenv(file, env)
file()
return env
end
-- get resource + dofile
function include(modname, file)
if not file then
file = modname
modname = minetest.get_current_modname()
end
return dofile(get_resource(modname, file))
end
function include_env(file_or_string, env, is_string)
setfenv(assert((is_string and loadstring or loadfile)(file_or_string)), env)()
end
function create_namespace(namespace_name, parent_namespace)
namespace_name = namespace_name or minetest.get_current_modname()
parent_namespace = parent_namespace or _G
local metatable = {__index = parent_namespace == _G and function(_, key) return rawget(_G, key) end or parent_namespace}
local namespace = {}
namespace = setmetatable(namespace, metatable)
if parent_namespace == _G then
rawset(parent_namespace, namespace_name, namespace)
else
parent_namespace[namespace_name] = namespace
end
return namespace
end
-- formerly extend_mod
function extend(modname, file)
if not file then
file = modname
modname = minetest.get_current_modname()
end
include_env(get_resource(modname, file .. ".lua"), rawget(_G, modname))
end
-- runs main.lua in table env
-- formerly include_mod
function init(modname)
modname = modname or minetest.get_current_modname()
create_namespace(modname)
extend(modname, "main")
end
--! deprecated
function extend_string(modname, string)
if not string then
string = modname
modname = minetest.get_current_modname()
end
include_env(string, rawget(_G, modname), true)
end
function configuration(modname)
modname = modname or minetest.get_current_modname()
local schema = modlib.schema.new(assert(include(modname, "schema.lua")))
schema.name = schema.name or modname
local settingtypes = schema:generate_settingtypes()
assert(schema.type == "table")
local overrides = {}
local conf
local function add(path)
for _, format in ipairs{
{extension = "lua", read = function(text)
assert(overrides._C == nil)
local additions = setfenv(assert(loadstring(text)), setmetatable(overrides, {__index = {_C = overrides}}))()
setmetatable(overrides, nil)
if additions == nil then
return overrides
end
return additions
end},
{extension = "luon", read = function(text)
local value = {setfenv(assert(loadstring("return " .. text)), setmetatable(overrides, {}))()}
assert(#value == 1)
value = value[1]
local function check_type(value)
local type = type(value)
if type == "table" then
assert(getmetatable(value) == nil)
for key, value in pairs(value) do
check_type(key)
check_type(value)
end
elseif not (type == "boolean" or type == "number" or type == "string") then
error("disallowed type " .. type)
end
end
check_type(value)
return value
end},
{extension = "conf", read = function(text) return modlib.conf.build_setting_tree(Settings(text):to_table()) end, convert_strings = true},
{extension = "json", read = minetest.parse_json}
} do
local content = modlib.file.read(path .. "." .. format.extension)
if content then
overrides = modlib.table.deep_add_all(overrides, format.read(content))
conf = schema:load(overrides, {convert_strings = format.convert_strings, error_message = true})
end
end
end
add(minetest.get_worldpath() .. "/conf/" .. modname)
add(get_resource(modname, "conf"))
local minetest_conf = modlib.conf.settings[schema.name]
if minetest_conf then
overrides = modlib.table.deep_add_all(overrides, minetest_conf)
conf = schema:load(overrides, {convert_strings = true, error_message = true})
end
modlib.file.ensure_content(get_resource(modname, "settingtypes.txt"), settingtypes)
local readme_path = get_resource(modname, "Readme.md")
local readme = modlib.file.read(readme_path)
if readme then
local modified = false
readme = readme:gsub("<!%-%-modlib:conf:(%d)%-%->" .. "(.-)" .. "<!%-%-modlib:conf%-%->", function(level, content)
schema._md_level = assert(tonumber(level)) + 1
-- HACK: Newline between comment and heading (MD implementations don't handle comments properly)
local markdown = "\n" .. schema:generate_markdown()
if content ~= markdown then
modified = true
return "<!--modlib:conf:" .. level .. "-->" .. markdown .. "<!--modlib:conf-->"
end
end, 1)
if modified then
assert(modlib.file.write(readme_path, readme))
end
end
if conf == nil then
return schema:load({}, {error_message = true})
end
return conf
end
-- Export environment
return _ENV