Module:InfoboxImage

Documentation for this module may be created at Module:InfoboxImage/doc

-- Inputs:
--    image - Can either be a bare filename or a fully formatted image link
--    size - size to display the image
--    sizedefault - default size to display the image if size param is blank
--    alt - alt text for image
-- Outputs:
--    Formatted image.

local i = {};

function i.InfoboxImage(frame)
    local image = frame.args["image"];
    
    if image == "" or image == nil then
        return ""
    end
    
    if string.sub(image,1,2) == "[[" then
        return image;
    else
        local result = "";
        local size = frame.args["size"];
        local sizedefault = frame.args["sizedefault"];
        local alt = frame.args["alt"];
        
        -- remove file: or image: prefix if exists
        if string.lower(string.sub(image,1,5)) == "file:" then
            image = string.sub(image,6,string.len(image));
        end
        if string.lower(string.sub(image,1,6)) == "image:" then
            image = string.sub(image,7,string.len(image));
        end
        
        -- add px to size if just a number
        if (tonumber(size) or 0) > 0 then
            size = size .. "px";
        end
        
        result = "[[File:" .. image;
        if size ~= "" and size ~= nil then
            result = result .. "|" .. size;
        elseif sizedefault ~= "" and sizedefault ~= nil then
            result = result .. "|" .. sizedefault;
        else
            result = result .. "|frameless";
        end
        if alt ~= "" and alt ~= nil then
            result = result .. "|alt=" .. alt;
        end
        result = result .. "]]";
        
        return result;
    end
end

return i;