Module:MyTranslationModule/sandbox

This is the module sandbox page for Module:MyTranslationModule (diff).
local p = {}

-- Define which language codes are RTL
local rtl_langs = {
    ar = true, he = true, fa = true, ur = true,
    ps = true, prs = true, syr = true, ckb = true,
}

-- Determine direction based on language code
local function is_rtl(code)
    if not code then return false end
    code = mw.ustring.lower(mw.text.trim(code))
    return rtl_langs[code] or false
end

-- Builds a table cell with dir/lang styling
local function build_cell(text, code)
    if not text then text = "" end
    if not code then return string.format("| %s", text) end

    local dir = is_rtl(code) and "rtl" or "ltr"
    return string.format('| style="direction:%s;" lang="%s" | %s', dir, code, text)
end

function p.render(frame)
    local args = frame:getParent().args
    local lang1 = args["lang1"] or args[1]
    local lang2 = args["lang2"] or args[2]
    local code1 = args["lang1code"]
    local code2 = args["lang2code"]

    if not lang1 or not lang2 then
        return "Error: You must specify two language names."
    end

    local output = {}
    table.insert(output, '{| class="wikitable sortable"')
    table.insert(output, string.format("! %s !! %s", lang1, lang2))

    -- Named param pairs: text1 / trans1
    local i = 1
    while true do
        local text = args["text" .. i]
        local trans = args["trans" .. i]
        if not text and not trans then break end
        table.insert(output, "|-")
        local safe_code1 = code1 or ""
		local safe_text = text or ""
		table.insert(output, "| <nowiki>{{langx|" .. safe_code1 .. "|" .. safe_text .. "}}</nowiki>")
        local safe_code2 = code2 or ""
		local safe_trans = trans or ""
		table.insert(output, "| <nowiki>{{langx|" .. safe_code2 .. "|" .. safe_trans .. "}}</nowiki>")
        i = i + 1
    end

    -- Positional fallback (3+)
    local index = 3
    while true do
        local text = args[index]
        local trans = args[index + 1]
        if not text and not trans then break end
        table.insert(output, "|-")
        local safe_code1 = code1 or ""
		local safe_text = text or ""
		table.insert(output, "| <nowiki>{{langx|" .. safe_code1 .. "|" .. safe_text .. "}}</nowiki>")
        local safe_code2 = code2 or ""
		local safe_trans = trans or ""
		table.insert(output, "| <nowiki>{{langx|" .. safe_code2 .. "|" .. safe_trans .. "}}</nowiki>")
        index = index + 2
    end

    table.insert(output, "|}")
    return table.concat(output, "\n")
end

return p