Module:Redirect/sandbox: Difference between revisions

Revision as of 04:52, 18 May 2014

Revision as of 04:59, 11 June 2014

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-- This module provides functions for getting the target of a redirect page.

-- Given a single page name determines what page it redirects to and returns the target page name, or the

-- passed page name when not a redirect. The passed page name can be given as plain text or as a page link.

-- Returns page name as plain text, or when the bracket parameter is given, as a page link. Returns an

-- error message when page does not exist or the redirect target cannot be determined for some reason.

-- Thus these are roughly the same:

-- [[{{#invoke:redirect|main|redirect-page-name}}]] and {{#invoke:redirect|main|redirect-page-name|bracket=yes}}

local p = {}

-- Gets a mw.title object, using pcall to avoid generating script errors if we

-- are over the expensive function count limit (among other possible causes).

local function getTitle(...)

local success, titleObj = pcall(mw.title.new, ...)

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end

-- Gets the target of a redirect. If the page specified is not a redirect,

-- returns nil.

function p.getTarget(page)

-- Get the title object. Both page names and title objects are allowed

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end

--[[

function p._main(rname, bracket)

-- Given a single page name determines what page it redirects to and returns the target page name, or the

-- target page name, or the passed page name when not a redirect. The passed

-- passed page name when not a redirect. The passed page name can be given as plain text or as a page link.

--

-- Returns page name as plain text, or when the bracket parameter is given, as a page link. Returns an

-- page link. Returns an error message when page does not exist or the redirect

-- error message when page does not exist or the redirect target cannot be determined for some reason.

--]]

function p._mainluaMain(rname, bracket)

if type(rname) ~= "string" or not rname:find("%S") then

return nil

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end

-- Provides access to the luaMain function from wikitext.

function p.main(frame)

local args = require('Module:Arguments').getArgs(frame)

return p._mainluaMain(args[1], args.bracket) or ''

end