Module:Sandbox/Erutuon/scripts

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local p = {}

local cp_to_sc = require 'Module:Language/scripts'.codepointToScript

local function in_array(arr, val)
	for i, v in ipairs(arr) do
		if v == val then
			return true
		end
	end
	return false
end

local function mapIter(func, iter, iterable, initVal)
	local array = {}
	local i = 0
	for x, y in iter, iterable, initVal do
		i = i + 1
		array[i] = func(y, x, iterable)
	end
	return array
end

function p.list_chars_in_script(str)
	local scripts = {}
	for codepoint in mw.ustring.gcodepoint(str) do
		local script = cp_to_sc(codepoint)
		scripts[script] = scripts[script] or {}
		local char = mw.ustring.char(codepoint)
		if not in_array(scripts[script], char) then
			table.insert(scripts[script], char)
		end
	end
	
	for script, characters in pairs(scripts) do
		table.sort(characters)
	end
	
	return table.concat(
		mapIter(
			function (codepoints, script)
				return ('\n* %s: %s')
					:format(script, table.concat(codepoints))
			end,
			pairs(scripts)))
end

function p.main(frame)
	return p.list_chars_in_script(frame.args[1])
end

return p