Module:InfoboxImage

-- Inputs: -- image - Can either be a bare filename (with or without the File:/Image: prefix) or a fully formatted image link -- size - size to display the image -- maxsize - maximum size for image -- sizedefault - default size to display the image if size param is blank -- alt - alt text for image -- border - set to yes if border -- upright - upright image param -- suppressplaceholder - if yes then checks to see if image is a placeholder and suppresses it -- Outputs: -- Formatted image. -- More details available at the "Module:InfoboxImage/doc" page

local i = {};

local placeholder_image = {

   "Blue - Replace this image female.svg",
   "Blue - Replace this image male.svg",
   "Female no free image yet.png",
   "Flag of None (square).svg",
   "Flag of None.svg",
   "Flag of.svg",
   "Green - Replace this image female.svg",
   "Green - Replace this image male.svg",
   "Image is needed female.svg",
   "Image is needed male.svg",
   "Location map of None.svg",
   "Male no free image yet.png",
   "Missing flag.png",
   "No flag.svg",
   "No free portrait.svg",
   "No portrait (female).svg",
   "No portrait (male).svg",
   "Red - Replace this image female.svg",
   "Red - Replace this image male.svg",
   "Replace this image female (blue).svg",
   "Replace this image female.svg",
   "Replace this image male (blue).svg",
   "Replace this image male.svg",
   "Silver - Replace this image female.svg",
   "Silver - Replace this image male.svg",

}

function i.IsPlaceholder(image)

   -- change underscores to spaces
   image = mw.ustring.gsub(image, "_", " ");
   -- if image starts with [[then remove that and anything after |
   if mw.ustring.sub(image,1,2) == "[[" then
       image = mw.ustring.sub(image,3);
       image = mw.ustring.gsub(image, "([^|]*)|.*", "%1");
   end
   -- Trim spaces
   image = mw.ustring.gsub(image, '^[ ]*(.-)[ ]*$', '%1');
   -- remove file: or image: prefix if exists
   if mw.ustring.lower(mw.ustring.sub(image,1,5)) == "file:" then
       image = mw.ustring.sub(image,6);
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,6)) == "image:" then
       image = mw.ustring.sub(image,7);
   end
   -- Trim spaces
   image = mw.ustring.gsub(image, '^[ ]*(.-)[ ]*$', '%1');
   -- capitalise first letter
   image = mw.ustring.upper(mw.ustring.sub(image,1,1)) .. mw.ustring.sub(image,2);

   for i,j in pairs(placeholder_image) do
       if image == j then
           return true
       end
   end
   return false

end

function i.InfoboxImage(frame)

   local image = frame.args["image"];
   
   if image == "" or image == nil then
       return "";
   end
   if image == " " then
       return image;
   end
   if frame.args["suppressplaceholder"] == "yes" then
       if i.IsPlaceholder(image) == true then
           return "";
       end
   end

   if mw.ustring.lower(mw.ustring.sub(image,1,5)) == "http:" then
       return "";
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,6)) == "[http:" then
       return "";
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,7)) == "[[http:" then
       return "";
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,6)) == "https:" then
       return "";
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,7)) == "[https:" then
       return "";
   end
   if mw.ustring.lower(mw.ustring.sub(image,1,8)) == "[[https:" then
       return "";
   end

   if mw.ustring.sub(image,1,2) == "[[" then
       -- search for thumbnail images and add to tracking cat if found
       if mw.title.getCurrentTitle().namespace == 0 and (mw.ustring.find(image, "|%s*thumb%s*[|%]]") or mw.ustring.find(image, "|%s*thumbnail%s*[|%]]")) then
           return image .. "";
       else
           return image;
       end
   elseif mw.ustring.sub(image,1,2) == "{{" and mw.ustring.sub(image,1,3) ~= "{{{" then
       return image;
   elseif mw.ustring.sub(image,1,1) == "<" then
       return image;
   elseif mw.ustring.sub(image,1,5) == mw.ustring.char(127).."UNIQ" then
       -- Found strip marker at begining, so pass don't process at all
       return image;
   else
       local result = "";
       local size = frame.args["size"];
       local maxsize = frame.args["maxsize"];
       local sizedefault = frame.args["sizedefault"];
       local alt = frame.args["alt"];
       local border = frame.args["border"];
       local upright = frame.args["upright"] or "";
       
       -- remove file: or image: prefix if exists
       if mw.ustring.lower(mw.ustring.sub(image,1,5)) == "file:" then
           image = mw.ustring.sub(image,6);
       end
       if mw.ustring.lower(mw.ustring.sub(image,1,6)) == "image:" then
           image = mw.ustring.sub(image,7);
       end
       
       if maxsize ~= "" and maxsize ~= nil then
           -- if no sizedefault then set to maxsize
           if sizedefault == "" or sizedefault == nil then
               sizedefault = maxsize
           end
           -- check to see if size bigger than maxsize
           if size ~= "" and size ~= nil then
               local sizenumber = tonumber(mw.ustring.match(size,"%d*")) or 0;
               local maxsizenumber = tonumber(mw.ustring.match(maxsize,"%d*"));
               if sizenumber>maxsizenumber and maxsizenumber>0 then
                   size = maxsize;
               end
           end
       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
       if border == "yes" then
           result = result .. "|border";
       end
       if upright ~= "" then
           result = result .. "|upright=" .. upright;
       end
       result = result .. "]]";
       
       return result;
   end

end

return i;