mirror of
https://github.com/appgurueu/modlib.git
synced 2024-11-22 07:13:45 +01:00
Large configuration improvements, text helpers
This commit is contained in:
Lars Mueller
parent
03de70c774
commit
e5266d9862
@ -9,3 +9,10 @@ No dependencies. Licensed under the MIT License. Written by Lars Mueller aka LMD
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## API
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Mostly self-documenting code. Mod namespace is `modlib` or `_ml`, containing all variables & functions.
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## Configuration
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1. Configuration is loaded from `<worldpath>/config/<modname>.<extension>`, the following extensions are supported and will be searched for (in that order):
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1. [`json`](https://json.org)
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2. [`conf`](https://github.com/minetest/minetest/blob/master/doc/lua_api.txt)
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2. Settings are loaded and override configuration values
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282
conf.lua
282
conf.lua
@ -2,13 +2,84 @@ minetest.mkdir(minetest.get_worldpath().."/config")
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function get_path(confname)
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return minetest.get_worldpath().."/config/"..confname
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end
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function load (filename, constraints)
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function read_conf(text)
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local lines = modlib.text.split_lines(text, nil, true)
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local dict = {}
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for i, line in ipairs(lines) do
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local error_base = "Line " .. (i+1) .. ": "
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line = modlib.text.trim_left(lines[i])
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if line ~= "" and line:sub(1,1) ~= "#" then
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line = modlib.text.split(line, "=", 2)
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if #line ~= 2 then
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error(error_base .. "No value given")
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end
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local prop = modlib.text.trim_right(line[1])
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if prop == "" then
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error(error_base .. "No key given")
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end
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local val = modlib.text.trim_left(line[2])
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if val == "" then
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error(error_base .. "No value given")
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end
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if modlib.text.starts_with(val, '"""') then
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val = val:sub(3)
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local total_val = {}
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local function readMultiline()
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while i < #lines do
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if modlib.text.ends_with(val, '"""') then
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val = val:sub(1, val:len() - 3)
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return
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end
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table.insert(total_val, val)
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i = i + 1
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val = lines[i]
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end
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i = i - 1
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error(error_base .. "Unclosed multiline block")
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end
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readMultiline()
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table.insert(total_val, val)
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val = table.concat(total_val, "\n")
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else
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val = modlib.text.trim_right(val)
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end
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if dict[prop] then
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error(error_base .. "Duplicate key")
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end
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dict[prop] = val
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end
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end
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return dict
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end
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function build_tree(dict)
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local tree = {}
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for key, value in pairs(dict) do
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local path = modlib.text.split_unlimited(key, ".")
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local subtree = tree
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for i = 1, #path - 1 do
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local index = tonumber(path[i]) or path[i]
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subtree[index] = subtree[index] or {}
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subtree = subtree[index]
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end
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subtree[path[#path]] = value
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end
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return tree
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end
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function build_setting_tree()
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modlib.conf.settings = build_tree(minetest.settings:to_table())
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end
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function check_config_constraints(config, constraints, handler)
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local no_error, error_or_retval = pcall(function() check_constraints(config, constraints) end)
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if not no_error then
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handler(error_or_retval)
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end
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end
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function load(filename, constraints)
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local config = minetest.parse_json(modlib.file.read(filename))
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if constraints then
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local error_message = check_constraints(config, constraints)
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if error_message then
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error("Configuration - "..filename.." doesn't satisfy constraints: "..error_message)
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end
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check_config_constraints(config, constraints, function(message)
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error('Configuration of file "'..filename.."\" doesn't satisfy constraints: "..message)
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end)
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end
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return config
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end
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@ -16,86 +87,191 @@ function load_or_create(filename, replacement_file, constraints)
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modlib.file.create_if_not_exists_from_file(filename, replacement_file)
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return load(filename, constraints)
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end
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function import(modname, constraints)
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return load_or_create(get_path(modname)..".json", modlib.mod.get_resource(modname, "default_config.json"), constraints)
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function import(modname, constraints, no_settingtypes)
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local default_config = modlib.mod.get_resource(modname, "default_config.json")
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local config = load_or_create(get_path(modname)..".json", default_config, constraints)
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if not no_settingtypes then
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constraints.name = modname
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local settingtypes = generate_settingtypes(minetest.parse_json(modlib.file.read(default_config)), constraints)
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modlib.file.write(modlib.mod.get_resource(modname, "settingtypes.txt"), settingtypes)
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end
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local additional_settings = modlib.conf.settings[modname] or {}
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additional_settings = fix_types(additional_settings, constraints)
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config = merge_config(config, additional_settings)
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if constraints then
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check_config_constraints(config, constraints, function(message)
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error('Configuration of mod "'..modname.."\" doesn't satisfy constraints: "..message)
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end)
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end
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return config
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end
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function check_constraints(value, constraints)
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local t=type(value)
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if constraints.func then
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local possible_errors=constraints.func(value)
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if possible_errors then
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return possible_errors
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function merge_config(config, additional_settings)
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if not config or type(additional_settings) ~= "table" then
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return additional_settings
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end
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for setting, value in pairs(additional_settings) do
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if config[setting] then
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config[setting] = merge_config(config[setting], value)
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end
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end
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if constraints.type and constraints.type~=t then
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return "Wrong type: Expected "..constraints.type..", found "..t
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return config
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end
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-- format: # comment
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-- name (Readable name) type type_args
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function generate_settingtypes(default_conf, constraints)
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local constraint_type = constraints.type
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if constraints.children or constraints.possible_children or constraints.required_children or constraints.keys or constraints.values then
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constraint_type = "table"
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end
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local settingtype, type_args
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local title = constraints.title
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if not title then
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title = modlib.text.split(constraints.name, "_")
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title[1] = modlib.text.upper_first(title[1])
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title = table.concat(title, " ")
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end
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if constraint_type == "boolean" then
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settingtype = "bool"
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default_conf = default_conf and "true" or "false"
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elseif constraint_type == "string" then
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settingtype = "string"
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elseif constraint_type == "number" then
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settingtype = constraints.int and "int" or "float"
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local range = constraints.range
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if range then
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-- TODO consider better max
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type_args = (constraints.int and "%d %d" or "%f %f"):format(range[1], range[2] or math.pow(2, 30))
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end
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elseif constraint_type == "table" then
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local handled = {}
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local settings = {}
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local function setting(key, value_constraints)
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if handled[key] then
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return
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end
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handled[key] = true
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value_constraints.name = constraints.name .. "." .. key
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value_constraints.title = title .. " " .. key
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table.insert(settings, generate_settingtypes(default_conf and default_conf[key], value_constraints))
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end
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for _, table in ipairs{"children", "required_children", "possible_children"} do
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for key, constraints in pairs(constraints[table] or {}) do
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setting(key, constraints)
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end
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end
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return table.concat(settings, "\n")
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end
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if not constraint_type then
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return ""
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end
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local comment = constraints.comment
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if comment then
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comment = "# " .. comment .. "\n"
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else
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comment = ""
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end
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assert(type(default_conf) == "string" or type(default_conf) == "number" or type(default_conf) == "nil", dump(default_conf))
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return comment .. constraints.name .. " (" .. title .. ") " .. settingtype .. " " .. (default_conf or "") ..(type_args and (" "..type_args) or "")
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end
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function fix_types(value, constraints)
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local type = type(value)
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local expected_type = constraints.type
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if expected_type and expected_type ~= type then
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assert(type == "string", "Can't fix non-string value")
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if expected_type == "boolean" then
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assert(value == "true" or value == "false", "Not a boolean (true or false): " .. value)
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value = value == "true"
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elseif expected_type == "number" then
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assert(tonumber(value), "Not a number: " .. value)
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value = tonumber(value)
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end
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end
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if type == "table" then
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for key, val in pairs(value) do
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for _, child_constraints in ipairs{"required_children", "children", "possible_children"} do
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child_constraints = (constraints[child_constraints] or {})[key]
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if child_constraints then
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val = fix_types(val, child_constraints)
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end
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end
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if constraints.values then
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val = fix_types(val, constraints.values)
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end
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if constraints.keys then
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value[key] = nil
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value[fix_types(key, constraints.keys)] = val
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else
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value[key] = val
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end
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end
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end
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return value
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end
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function check_constraints(value, constraints)
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local t = type(value)
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if constraints.type and constraints.type ~= t then
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error("Wrong type: Expected "..constraints.type..", found "..t)
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end
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if (t == "number" or t == "string") and constraints.range then
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if value < constraints.range[1] or (constraints.range[2] and value > constraints.range[2]) then
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return "Not inside range: Expected value >= "..constraints.range[1].." and <= "..constraints.range[1]..", found "..minetest.write_json(value)
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error("Not inside range: Expected value >= "..constraints.range[1].." and <= "..(constraints.range[2] or "inf")..", found "..minetest.write_json(value))
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end
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end
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if t == "number" and constraints.int and value % 1 ~= 0 then
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error("Not an integer number: " .. minetest.write_json(value))
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end
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if constraints.possible_values and not constraints.possible_values[value] then
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return "None of the possible values: Expected one of "..minetest.write_json(modlib.table.keys(constraints.possible_values))..", found "..minetest.write_json(value)
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error("None of the possible values: Expected one of "..minetest.write_json(modlib.table.keys(constraints.possible_values))..", found "..minetest.write_json(value))
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end
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if t == "table" then
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if constraints.children then
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for k, v in pairs(value) do
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local child=constraints.children[k]
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if not child then
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return "Unexpected table entry: Expected one of "..minetest.write_json(modlib.table.keys(constraints.children))..", found "..minetest.write_json(k)
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for key, val in pairs(value) do
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local child_constraints = constraints.children[key]
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if not child_constraints then
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error("Unexpected table entry: Expected one of "..minetest.write_json(modlib.table.keys(constraints.children))..", found "..minetest.write_json(key))
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else
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local possible_errors=check_constraints(v, child)
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if possible_errors then
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return possible_errors
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end
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check_constraints(val, child_constraints)
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end
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end
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for k, _ in pairs(constraints.children) do
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if value[k] == nil then
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return "Table entry missing: Expected key "..minetest.write_json(k).." to be present in table "..minetest.write_json(value)
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for key, _ in pairs(constraints.children) do
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if value[key] == nil then
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error("Table entry missing: Expected key "..minetest.write_json(key).." to be present in table "..minetest.write_json(value))
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end
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end
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end
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if constraints.required_children then
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for k,v_constraints in pairs(constraints.required_children) do
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local v=value[k]
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if v then
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local possible_errors=check_constraints(v, v_constraints)
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if possible_errors then
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return possible_errors
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end
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for key, value_constraints in pairs(constraints.required_children) do
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local val = value[key]
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if val then
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check_constraints(val, value_constraints)
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else
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return "Table entry missing: Expected key "..minetest.write_json(k).." to be present in table "..minetest.write_json(value)
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error("Table entry missing: Expected key "..minetest.write_json(key).." to be present in table "..minetest.write_json(value))
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end
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end
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end
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if constraints.possible_children then
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for k,v_constraints in pairs(constraints.possible_children) do
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local v=value[k]
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if v then
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local possible_errors=check_constraints(v, v_constraints)
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if possible_errors then
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return possible_errors
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end
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for key, value_constraints in pairs(constraints.possible_children) do
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local val = value[key]
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if val then
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check_constraints(val, value_constraints)
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end
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end
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end
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if constraints.keys then
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for k,_ in pairs(value) do
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local possible_errors=check_constraints(k, constraints.keys)
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if possible_errors then
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return possible_errors
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end
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for key,_ in pairs(value) do
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check_constraints(key, constraints.keys)
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end
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end
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if constraints.values then
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for _,v in pairs(value) do
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local possible_errors=check_constraints(v, constraints.values)
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if possible_errors then
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return possible_errors
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end
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for _, val in pairs(value) do
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check_constraints(val, constraints.values)
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end
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end
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end
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if constraints.func then
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local possible_errors = constraints.func(value)
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if possible_errors then
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error(possible_errors)
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end
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end
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end
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2
init.lua
2
init.lua
@ -77,6 +77,8 @@ for component, additional in pairs(components) do
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end
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end
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modlib.conf.build_setting_tree()
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modlib.mod.loadfile_exports = loadfile_exports
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-- complete the string library (=metatable) with text helpers
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1
mod.conf
1
mod.conf
@ -1,2 +1,3 @@
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name=modlib
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description=Multipurpose Minetest Modding Library
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author=LMD aka appguru(eu)
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BIN
screenshot.png
BIN
screenshot.png
Binary file not shown.
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Before Width: | Height: | Size: 50 KiB After Width: | Height: | Size: 49 KiB |
37
text.lua
37
text.lua
@ -41,35 +41,58 @@ function trim_begin(str, to_remove)
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return str:sub(j)
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end
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function split(str, delim, limit)
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if not limit then return split_without_limit(str, delim) end
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trim_left = trim_begin
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function trim_end(str, to_remove)
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local k = 1
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for i = string.len(str), 1, -1 do
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if str:sub(i, i) ~= to_remove then
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k = i
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break
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end
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end
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return str:sub(1, k)
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end
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trim_right = trim_end
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function split(str, delim, limit, regex)
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if not limit then return split_without_limit(str, delim, regex) end
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local no_regex = not regex
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local parts = {}
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local occurences = 1
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local last_index = 1
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local index = string.find(str, delim, 1, true)
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local index = string.find(str, delim, 1, no_regex)
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while index and occurences < limit do
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table.insert(parts, string.sub(str, last_index, index - 1))
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last_index = index + string.len(delim)
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index = string.find(str, delim, index + string.len(delim), true)
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index = string.find(str, delim, index + string.len(delim), no_regex)
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occurences = occurences + 1
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end
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table.insert(parts, string.sub(str, last_index))
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return parts
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end
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function split_without_limit(str, delim)
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function split_without_limit(str, delim, regex)
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local no_regex = not regex
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local parts = {}
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local last_index = 1
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local index = string.find(str, delim, 1, true)
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local index = string.find(str, delim, 1, no_regex)
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while index do
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table.insert(parts, string.sub(str, last_index, index - 1))
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last_index = index + string.len(delim)
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index = string.find(str, delim, index + string.len(delim), true)
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index = string.find(str, delim, index + string.len(delim), no_regex)
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end
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table.insert(parts, string.sub(str, last_index))
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return parts
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end
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split_unlimited = split_without_limit
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function split_lines(str, limit)
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modlib.text.split(str, "\r?\n", limit, true)
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end
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hashtag = string.byte("#")
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zero = string.byte("0")
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nine = string.byte("9")
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