Modul:LinkISBN

Die Dokumentation für dieses Modul kann unter Modul:LinkISBN/doc erstellt werden

local li = {}

local ci = require( 'Modul:Check_isxn' )

li.invalid = '&nbsp;<span class="error">Ungültige ISBN</span>[[Kategorie:Seiten mit ISBN-Fehlern]]'

-- patterns for delimiters except ','
li.delimiters = { ' and ', ' or ', ' und ', ' oder ', ';' }

function li.linkISBN( m, noerror )
	local mm = mw.text.trim( m )
	if mm == '' then return mm end -- empty string

	local comment = ''
	local t = mw.ustring.gsub( mm, '(.*)(%(.*%))$', '%2' )
	if t ~= mm then
		comment = t
		mm = mw.ustring.gsub( mw.ustring.gsub( mm, '(.*)(%(.*%))$', '%1' ), '( +)$', '' )
	end

	mm = mw.ustring.gsub( mm, 'ISBN ', '' )
	t = '[[Special:BookSources/' .. mm .. '|' .. 'ISBN ' .. mm .. ']]'
	if not noerror then t = t .. ci._check_isbn( mm, li.invalid ) end
	if comment ~= '' then t = t .. ' ' .. comment end
	
	return t
end

function li.linkISBNSet( args )
	args['isbn'] = args['isbn'] or args[1] or ''
	args['noerror'] = args['noerror'] or ''
	if (args['noerror'] == 'j') or (args['noerror'] == 'y') then args['noerror'] = true
		else args['noerror'] = false end

	local s
	local result = ''

	if args.isbn ~= '' then
		-- substitude delimiters
		for i = 1, #li.delimiters, 1 do
			args.isbn = mw.ustring.gsub( args.isbn, li.delimiters[i], ',' );
		end

		-- split seperate ISBNs and analyse them
		for s in mw.ustring.gmatch( args.isbn .. ',', '([^,]+)' ) do
			s = li.linkISBN( s, args['noerror'] )
			if s ~= '' then
				if result == '' then result = s
				else result = result .. ', ' .. s
				end
			end
		end
	end
	return result
end

function li.linkISBNs( frame )
	local args = frame.args
	return li.linkISBNSet( args )
end

return li