Module:TagQS

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This documentation is transcluded from Module:TagQS/doc.

--[[  

                                                                             
This module is intended to 

Authors and maintainers:
* User:Jarekt - original version 
]]

require('Module:No globals') -- used for debugging purposes as it detects cases of unintended global variables

-- ==================================================
-- === External functions ===========================
-- ==================================================
local p = {}

-- ===========================================================================
-- === Version of the function to be called from other LUA codes
-- ===========================================================================
function p.createTag(field, property, value)
	return string.format('<div style="display: none;">%s QS:%s,%s</div>\n', field, property or 'P', value)
end

function p.changeField(text, old, new)
	local patrn = '%<div style="display: none;"%>'.. old ..' QS:([^%<]+)%</div%>'
	local repl  = '<div style="display: none;">'.. new ..' QS:%1</div>'
	return string.gsub(text, patrn, repl)
end

function p.changeProperty(text, old, new)
	if not old then
		old = '(^,)+'
	end
	local patrn = '%<div style="display: none;"%>((^ )+) QS:' .. old .. ',([^%<]+)%</div%>'
	local repl  = '<div style="display: none;">%1 QS:' .. new .. ',%1</div>'
	return string.gsub(text, patrn, repl)
end

function p.readTag(text, field)
	local pat = '%<div style="display: none;"%>'..field..' QS:([^%<]+)%</div%>'
	local qs  = string.match(text, pat) -- find hidden tag with QS code
	local _, nMatch = string.gsub(text, pat, "") -- count matches
	if qs and nMatch==1 then -- allow only single matches
		return string.gsub(qs, ',', '|')
	end
end

-- ===========================================================================
-- === Versions of the function to be called from template namespace
-- ===========================================================================
function p.CreateTag(frame)
	return p.createTag(frame.args[1], frame.args[2], frame.args[3])
end


return p