local getPortalImage = require('Module:Portal').image  
local p = {}  
local function getArgNums(prefix, args)
-- Returns a table containing the numbers of the arguments that exist for the specified prefix. For example, if the
-- prefix was 'data', and 'data1', 'data2', and 'data5' exist, it would return {1, 2, 5}.
local nums = {}
for k, v in pairs(args) do
local num = tostring(k):match('^' .. prefix .. '([1-9]%d*)$')
if num then table.insert(nums, tonumber(num)) end
end
table.sort(nums)
return nums
end  
local function makeHorizontalRule
local row = mw.html.create('tr')
row
:tag('td')
:attr('colspan', '2')
:tag('hr', {selfClosing = true})
return tostring(row)
end  
local function makeItem(image, text)
local root = mw.html.create('li')
root
:css('float', '')
:css('margin-', '0.3em')
:css('height', '3.6em')
:tag('span')
:css('display', 'inline-block')
:css('margin-', '0.3em')
:css('width', '')
:css('line-height', '3.6em')
:css('text-align', '')
:wikitext(image)
:done
:tag('span')
:css('display', 'inline-block')
:css('width', '11em')
:css('vertical-align', 'middle')
:wikitext(text)
return tostring(root)
end  
local function makeRow(items, heading, subheading, options)
if #items < 1 then return end
local swapHeadingSize = type(options) == 'table' and options.swapHeadingSize or false
local row = mw.html.create('tr')
row
:tag('td')
:css('width', '')
:cssText('-:solid black; padding-:; padding-:;')
:tag('span')
:css('font-size', swapHeadingSize and '90%' or '125%')
:wikitext(heading)
:done
:tag('br', {selfClosing = true})
:done
:tag('span')
:css('font-size', swapHeadingSize and '125%' or '90%')
:wikitext(subheading)
local list = row:tag('td'):css('text-align', ''):tag('ul')
for i, item in ipairs(items) do
local image = item[1]
local text = item[2]
list
:wikitext(makeItem(image, text))
end
return tostring(row)
end  
local function makeNumberedRow(prefix, args, heading, subheading, getItemValsFunc, options)
if args[prefix] then
args[prefix .. '1'] = args[prefix]
end
local argNums = getArgNums(prefix, args)
local items = {}
for i, argNum in ipairs(argNums) do
local image, text = getItemValsFunc(args[prefix .. tostring(argNum)])
table.insert(items, {image, text})
end
return makeRow(items, heading, subheading, options)
end  
local function checkPortalExists(portal)
return not (mw.title.makeTitle(100, portal).id == 0)
end  
local trackingEnabled = true  
-- Check whether to do tracking in this namespace
-- Returns true unless the page is one of the banned namespaces
local function checkTrackingNamespace
local thisPage = mw.title.getCurrentTitle
if (thisPage.namespace == 1) -- Talk
or (thisPage.namespace == 2) -- User
or (thisPage.namespace == 3) -- User talk
or (thisPage.namespace == 5) -- Wikipedia talk
or (thisPage.namespace == 7) -- File talk
or (thisPage.namespace == 11) -- Template talk
or (thisPage.namespace == 15) -- Category talk
or (thisPage.namespace == 101) -- Portal talk
or (thisPage.namespace == 118) -- Draft
or (thisPage.namespace == 119) -- Draft talk
or (thisPage.namespace == 829) -- Module talk
then
return false
end
return true
end  
-- Check whether to do tracking on this pagename
-- Returns false if the page title matches one of the banned strings
-- Otherwise returns true
local function checkTrackingPagename
local thisPage = mw.title.getCurrentTitle
local thisPageLC = mw.ustring.lower(thisPage.text)
if (string.match(thisPageLC, "/archive") ~= nil) then
return false
end
if (string.match(thisPageLC, "/doc") ~= nil) then
return false
end
if (string.match(thisPageLC, "/test") ~= nil) then
return false
end
return true
end  
local redlinkedportal = ""  
function p._main(args)
-- Tracking is on by default.
-- It is disabled if any of the following is true
-- 1/ the parameter "tracking" is set to 'no, 'n', or 'false'
-- 2/ the current page fails the namespace tests in checkTrackingNamespace
-- 3/ the current page fails the pagename tests in checkTrackingPagename
if (args.tracking == 'no') or (args.tracking == 'n') or (args.tracking == 'false') then
trackingEnabled = false
end
if (checkTrackingNamespace == false) then
trackingEnabled = false
end
if (checkTrackingPagename == false) then
trackingEnabled = false
end  
local rows = {}
--[=[ disabled per
-- Get the book row text.
local bookHeading = "****"
local bookSubheading = 'View or order collections of articles'
local function getBookItemVals(book)
local image = ''
local text = mw.ustring.format("***%s***", book, book)
return image, text
end
local bookRow = makeNumberedRow('book', args, bookHeading, bookSubheading, getBookItemVals)
table.insert(rows, bookRow)
]=]
-- Get the portal row text
local portalHeading = "****"
local portalSubheading = 'Access related topics'
local function getPortalItemVals(portal)
local image = mw.ustring.format('', getPortalImage{portal})
local text = mw.ustring.format("***%s portal***", portal, portal)
if not pcall(checkPortalExists, portal) or not checkPortalExists(portal) then
-- Getting here means a redlinked portal has been found
if trackingEnabled then
redlinkedportal = ''
end
end
return image, text
end
local portalRow = makeNumberedRow('portal', args, portalHeading, portalSubheading, getPortalItemVals)
table.insert(rows, portalRow)  
-- Get the sister projects row text.
local sisters = {
{arg = 'commons', image = 'Commons-logo.svg', prefix = 'commons', display = 'Media', from = 'Commons'},
{arg = 'species', image = 'Wikispecies-logo.svg', prefix = 'wikispecies', display = 'Species directories', from = 'Wikispecies'},
{arg = 'voy', image = 'Wikivoyage-Logo-v3-icon.svg', prefix = 'voy', display = 'Travel guides', from = 'Wikivoyage'},
{arg = 'n', image = 'Wikinews-logo.svg', prefix = 'wikinews', display = 'News stories', from = 'Wikinews'},
{arg = 'wikt', image = 'Wiktionary-logo-v2.svg', prefix = 'wiktionary', postfix = 'English', display = 'Definitions', from = 'Wiktionary'},
{arg = 'b', image = 'Wikibooks-logo.svg', prefix = 'wikibooks', display = 'Textbooks', from = 'Wikibooks'},
{arg = 'q', image = 'Wikiquote-logo.svg', prefix = 'wikiquote', display = 'Quotations', from = 'Wikiquote'},
{arg = 's', image = 'Wikisource-logo.svg', prefix = 'wikisource', display = 'Source texts', from = 'Wikisource'},
{arg = 'v', image = 'Wikiversity logo 2017.svg', prefix = 'wikiversity', display = 'Learning resources', from = 'Wikiversity'},
{arg = 'd', image = 'Wikidata-logo.svg', prefix = 'wikidata', display = 'Data', from = 'Wikidata'},
{arg = 'spoken', image = 'Sound-icon.svg', prefix = 'spoken wikipedia', display = 'Listen to this page', from = 'Spoken Wikipedia'},
}
local sisterItems = {}
for i, t in ipairs(sisters) do
if args[t.arg] then
-- Get the image value.
local image = mw.ustring.format('', t.image)
-- Get the text value.
local prefix = t.prefix
local search = args[t.arg .. '-search'] or mw.title.getCurrentTitle.text
local postfix = t.postfix
postfix = postfix and ('#' .. postfix) or ''
local display = t.display
local from = t.from
local text = mw.ustring.format(
'%s
from %s',
prefix, search, postfix, display, from
if t.arg == 'spoken' then
text = mw.ustring.format('%s on %s
',
display, from, args[t.arg]
end
-- Add the values to the items table.
table.insert(sisterItems, {image, text})
end
end
local sisterHeading = "**விக்கிப்பீடியா**
பற்றி மேலும் அறியவும்"
local sisterSubheading = "**பிற திட்டங்கள்**"
local sisterRow = makeRow(sisterItems, sisterHeading, sisterSubheading, {swapHeadingSize = true})
table.insert(rows, sisterRow)  
-- Make the table.
local root = mw.html.create('table')
root
:attr('role', 'presentation')
:addClass('subjectbar')
:addClass('noprint')
:addClass('metadata')
:addClass('plainlist')
:wikitext(table.concat(rows, makeHorizontalRule))  
return tostring(root)
end  
function p.main
-- If called via #invoke, use the args passed into the invoking template, or the args passed to #invoke if any exist. Otherwise
-- assume args are being passed directly in from the debug console or from another Lua module.
local origArgs
if == mw.getCurrentFrame then