Module:Get short description and Module:Get short description/sandbox: Difference between pages

Content deleted Content added

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+require ('strict')
-local p = {}
+--[[--------------------------< P A T T E R N S _ T >----------------------------------------------------------
+a sequence of patterns to match canonical template name and its redirects by transclusion counts as of 2024-08-15:
+	'Short description',														-- 6,090,442 (canonical form)
+	'Short Description',														-- 124
+	'Des',																		-- 20
+	'Shortdesc',																-- 10
+	'Short desc',																-- 8
+	'Shortdescription',															-- 6
+]]
+local patterns_t = {
+	'[Ss]hort [Dd]escription',
+	'[Dd]es',
+	'[Ss]hort *desc',
+	'[Ss]hortdescription',
+	}
+--[[-----------------------------< G E T C O N T E N T >-------------------------------------------------------
+fetch the article's raw wikitext
+]]
 local function getContent(title)
-	local success, titleObj = pcall(mw.title.new, title)
+	local success, titleObj = pcall(mw.title.new, title)						-- get a title object for title
-	if not success then return nil end
+	if not success then return nil end											-- return nil if sommat went wron
-	return titleObj:getContent()
+	return titleObj:getContent()												-- return wikitext else
 end
-function p.main(frame, title)
+--[[-----------------------------< M A I N >-------------------------------------------------------------------
+]]
+local function main(frame, title)												-- do we really need <title> here?
 	local title = frame.args[1]
     local wikitext = getContent(title)
-	if wikitext == nil then return "" end
+	if wikitext == nil then return "" end										-- sommat went wrong, abandon
-	wikitext = frame:preprocess(wikitext)
+	for _, pattern in ipairs (patterns_t) do									-- for each pattern in the sequence of redirect patterns
-    local startIndex, endIndex = string.find(wikitext, "<div class=\"shortdescription nomobile noexcerpt noprint searchaux\" style=\"display:none\">")
+		local description = wikitext:match ('{{%s*' .. pattern .. '%s*|%s*([^|}]+)%s*');	-- try to find a match
-    if startIndex == nil then
+		if description then
-        return nil
+			return description;													-- found one, stop looking and done
-    end
+		end
-    local descriptionStart = endIndex + 1
+	end
-    local descriptionEnd = string.find(wikitext, "</div>", descriptionStart)
-    if descriptionEnd == nil then
-        return nil
-    end
-    return string.sub(wikitext, descriptionStart, descriptionEnd - 1)
 end
-return p
+--[[-----------------------------< E X P O R T S >-------------------------------------------------------------
+]]
+return {
+	main = main,
+	}