Module:sem-arb-utilities

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---

local export = {}

local lang = require("Module:languages").getByCode("ar")
local m_utilities = require("Module:utilities")
local m_links = require("Module:links")
local m_headword = require("Module:headword")
local rsplit = mw.text.split

local function link(term, alt, id)
	if word == "" or word == "—" then
		return word
	else
		return m_links.full_link({
			term = term,
			alt = alt,
			lang = lang,
			id = id,
		}, face)
	end
end

local function validateRoot(rootTable, joined_root)
	if type(rootTable) ~= "table" then
		error("rootTable is not a table", 2)
	end

	for i, letter in ipairs(rootTable) do
		if mw.ustring.len(letter) > 1 then
            error("'" .. letter .. "', the " .. ordinal[i] ..
                      " letter in the root '" .. joined_root ..
                      "' should be a single letter.")
        end
	end
end

function export.root(frame)
	local output = {}
	local categories = {}
	local title = mw.title.getCurrentTitle()
	local fulltitle = title.fullText
	local namespace = title.nsText
	
	if frame.args["lang"] then
		lang = require("Module:languages").getByCode(frame.args["lang"])
	end

	local params = {
		[1] = {},
		["nocat"] = { type = "boolean" },
		["plain"] = { type = "boolean" },
		["notext"] = { type = "boolean" },
		["sense"] = {},
	}
	
	local args = require("Module:parameters").process(frame:getParent().args,
			params)
	local rootLetters = {}
	
	local separator = " "
	if frame.args["lang"] ~= "acy" then
		separator = " "
	else 
		separator  = "-"
	end

	if not args[1] and namespace == "Template" then
		if frame.args["lang"] ~= "acy" then rootLetters = {"ك", "ت", "ب"} else rootLetters = {"k", "t", "p"} end
	elseif args[1] then
		rootLetters = rsplit(args[1], separator)
	else
		rootLetters = rsplit(fulltitle, separator)
	end

	local joined_root = table.concat(rootLetters, separator)
	validateRoot(rootLetters, joined_root)

	local sense = args["sense"]
	local sense_formatted = ""
	if sense ~= nil then
		sense_formatted = " (" .. sense .. ") "
	end

	if fulltitle == joined_root then
		table.insert(output, m_headword.full_headword(
				{
					lang = lang,
					pos_category = "roots",
					categories = {},
					heads = { joined_root }
				}))

		table.insert(categories, "[[Category:" .. lang:getCanonicalName() .. " roots|" .. (args["sort"] or joined_root) .. "]]")

		if args["nocat"] then
			return table.concat(output)
		else
			return table.concat(output) .. table.concat(categories)
		end

	else
		local link_text

		link_text = link(joined_root, joined_root .. sense_formatted, sense)

		table.insert(output, link_text)

		table.insert(categories, m_utilities.format_categories(
				{ lang:getCanonicalName() .. " terms belonging to the root " .. joined_root .. sense_formatted },
				lang))

		if args["nocat"] then
			return table.concat(output)
		elseif args["plain"] then
			return table.concat(output)
		else
			local term_count = mw.site.stats.pagesInCategory(lang:getCanonicalName() .. " terms belonging to the root " .. joined_root .. sense_formatted, "pages")
			return "<table class=\"wikitable\" style=\"float: right; clear: right; text-align: center;\"><tr><th>[[w:Semitic root|Root]]</th></tr><tr><td>" .. link_text .. "</td></tr><tr><td>[[:Category:" .. lang:getCanonicalName() .. " terms belonging to the root " .. joined_root .. sense_formatted .. "|" .. term_count .. " term" .. (term_count == 1 and "" or "s") .. "]]</td></tr></table>" .. table.concat(categories)
		end

	end

end

return export