Module:Sandbox/Nyoron/revisionuser

Comparison

Case	Input	Output
	Template:Tld	imported>にょろん
	Template:Tld	Template:REVISIONUSER
page exists	Template:Tld	Template:REVISIONUSER
page not exist	Template:Tld	Template:REVISIONUSER
relative path	Template:Tld	Template:REVISIONUSER
	Template:Tld
page exists	Template:Tld
page not exist	Template:Tld
relative path	Template:Tld
	{{#invoke:REVISIONUSER|REVISIONUSER}}
page exists	{{#invoke:REVISIONUSER|REVISIONUSER|Oleic acid}}
page not exist	{{#invoke:REVISIONUSER|REVISIONUSER|Oreic acid}}
page not exist	{{#invoke:REVISIONUSER|REVISIONUSER|Oreic acid|ignore_errors=t}}
relative path	{{#invoke:REVISIONUSER|REVISIONUSER|/doc}}
relative path	{{#invoke:REVISIONUSER|REVISIONUSER|/doc|ignore_errors=1}}

---

p={}

local function err(message)
    return mw.ustring.format("<span class='error'>Error: %s</span>", message)
end	

local function isTrue(x)
	if type(x)=='boolean' then
		return x
	end
    if type(x)=='number' then
        if x == 0 then
      	    return false
    	else
	    	return true
	    end
	end
	if type(x)=='string' then
		x = mw.ustring.lower(x)
		if x == 't' or x == 'true' or x == 'y'or x == 'yes' or x == 'on' then
            return true
        end
        n = tonumber(x)
        if n then
        	if n == 0 then
        		return false
        	else
        	    return true
        	end
    	end
    end
    
    return false
end

p.REVISIONUSER = function(frame)
    local pageName = frame.args[1] or nil
    local ignore_errors = frame.args.ignore_errors or false
    -- args[1] is blank
    if pageName == nil or pageName == "" then
    	-- with no colon
        return frame:preprocess("{{REVISIONUSER}}")
    end
    -- args[1] is not blank
    pageTitle = mw.title.new(pageName)
    if pageTitle.exists then
    	-- with colon
        return frame:preprocess("{{REVISIONUSER:" .. pageTitle.prefixedText .. "}}")
    end
    -- you may want try relative path
    if mw.ustring.sub(pageName,1,1) == '/' then
    	local fullpageName = frame:preprocess("{{FULLPAGENAME}}")
    	local pageTitle = mw.title.new(fullpageName .. pageName)
    	if pageTitle.exists then
            return frame:preprocess("{{REVISIONUSER:" .. pageTitle.prefixedText .. "}}")
    	end
	end
	-- The pageTitle does not exist
    if isTrue(ignore_errors) then
   		return ""
   	end
   	return err("The page [" .. pageTitle.prefixedText .. "] does not exist.")
end

return p