Module:Discussion ping

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This module implements {{discussion ping}}.

Usage

{{#invoke:discussion ping|main|}}

Example

{{#invoke:discussion ping|main|1=[[User:Example]] [[User:Example2|Example]]}} yields

{{#invoke:discussion ping|main|title=User:Awesome Aasim/Example discussion#Some_discussion}} yields

{{#invoke:discussion ping|main|title=User:Awesome Aasim/Example discussion}} yields

Note: For really large pages, this template or module falls apart.

The above documentation is transcluded from Module:Discussion ping/doc. (edit | history)
Editors can experiment in this module's sandbox (create | mirror) and testcases (create) pages.
Subpages of this module.

--- This module extracts all the users in either a marked LST or in wikitext and
-- generates links reflecting a courtesy ping.
-- 
-- @module Courtesy ping
-- @require Module:Arguments
-- @release alpha

local p = {}
local getArgs = require("Module:Arguments").getArgs

function makeUserLink( userTitle )
	return mw.ustring.format( '@[[%s|%s]]', userTitle.prefixedText, userTitle.text )
end

--- Entry point for module
-- @param {table} frame processing frame
-- @return {string} wikitext
function p.main( frame )
	if not mw.isSubsting() then error( "Courtesy ping must be substituted" ) end

	local args = getArgs( frame )
	local links = {}
	local wikitext = args['wikitext'] or args[1] or nil
	local lstCallText = args['title'] or nil
	if lstCallText then
		wikitext = frame:callParserFunction('#lsth', { lstCallText })
	elseif not wikitext then
		error( "Wikitext or a page title with section must be specified!" )
	end

	wikitext = mw.text.unstripNoWiki( wikitext )
	local wikitextArray = mw.text.split( wikitext )
	local inWikiLink = false
	local inPipedLink = false
	local toProcess = ''
	for k,v in ipairs( wikitextArray ) do
		if k ~= 1 then
			if inWikiLink then
				if wikitextArray[ k ] == '|' then
					inPipedLink = true
					inWikiLink = false
				else
					toProcess = toProcess .. v
				end
			end
			if not inWikiLink and not inPipedLink then
				if wikitextArray[ k ] == '[' and wikitextArray[ k - 1 ] == '[' then
					toProcess = ''
					inWikiLink = true
				end
			else
				if wikitextArray[ k ] == ']' and wikitextArray[ k - 1 ] == ']' then
					toProcess = mw.ustring.sub( toProcess, mw.ustring.len( toProcess ) - 2 )
					links = table.insert( links, toProcess )
					toProcess = ''
					inWikiLink = false
					inPipedLink = false
				end
			end
		end
	end
	
	local out = ''
	
	for k,v in pairs(links) do
		local title = mw.title.new( v )
		if title.namespace == 2 and not title.isSubpage then
			out = out .. ' ' .. makeUserLink( title )
		end
	end
	
	return out
end