Module:Sandbox/Nyoron/revisionuser

Comparison

Case	Input	Output
	{{REVISIONUSER}}	blackwiki>にょろん
	{{REVISIONUSER|}}	Template:REVISIONUSER
page exists	{{REVISIONUSER|Oleic acid}}	Template:REVISIONUSER
page not exist	{{REVISIONUSER|Oreic acid}}	Template:REVISIONUSER
relative path	{{REVISIONUSER|/doc}}	Template:REVISIONUSER
	{{REVISIONUSER:}}
page exists	{{REVISIONUSER:Oleic acid}}
page not exist	{{REVISIONUSER:Oreic acid}}
relative path	{{REVISIONUSER:/doc}}
	{{#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)=='number' and x > 0 ) then
    	return true
	end
	if ( type(x)=='boolean' and x == true) then
		return true
	end
	if type(x)=='string' then
		x = mw.ustring.lower(x)
		if x == 'true' or x == 'on' or x == 'yes' then
            return true
        end
    end
    
    return false
end

p.REVISIONUSER = function(frame)
    local pageName = frame.args[1] or nil
    -- 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
    	fullpageName = frame:preprocess("{{FULLPAGENAME}}")
    	pageTitle = mw.title.new(fullpageName .. pageName)
    	if pageTitle.exists then
            return frame:preprocess("{{REVISIONUSER:" .. pageTitle.prefixedText .. "}}")
    	end
	end
	-- The pageTitle does not exist
    local ignore_errors = frame.args.ignore_erros or false
    if isTrue(ignore_errors) then
   		return ""
   	end
   	return err("The page [" .. pageTitle.prefixedText .. "] does not exist.")
end

return p