Module:Redirect/sandbox: Difference between revisions

Revision as of 21:12, 15 April 2014

Revision as of 03:18, 16 May 2014

Line 6:

-- Thus these are roughly the same:

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

local mArguments -- lazily initialise [[Module:Arguments]]

local p = {}

function p.main(frame)

mArguments = require('Module:Arguments')

-- If called via #invoke, use the args passed into the invoking

local args = mArguments.getArgs(frame)

-- template, or the args passed to #invoke if any exist. Otherwise

local rname, bracket = args[1], args.bracket

-- assume args are being passed directly in from the debug console

return p._main(rname, bracket) or ''

-- or from another Lua module.

end

local origArgs

if frame == mw.getCurrentFrame() then

function p._main(rname, bracket)

origArgs = frame:getParent().args

if type(rname) ~= "string" or not mw.ustring.matchrname:find(rname, "%S") then return end

for k, v in pairs( frame.args ) do

return nil

origArgs = frame.args

end

break

end

bracket = bracket and "[[%s]]" or "%s"

else

rname = mw.ustring.rname:match(rname, "%[%[(.+)%]%]") or rname

origArgs = frame

end

-- Get the title object, passing the function through pcall in case we are

-- Trim whitespace and remove blank arguments.

-- in case we are over the expensive function count limit, etc.

local args = {}

local noErrorsuccess, rpage = pcall(mw.title.new, rname)

for k, v in pairs( origArgs ) do

if not noErrorsuccess or not rpage then

v = mw.text.trim( v )

-- mw.title.new failed, so use the passed page name.

if v ~= '' then

return mw.ustring.bracket:format(bracket, rname)

args[k] = v

elseif not rpage.isRedirect then

end

-- the page is not a redirect, so use the normalized name of the page we

end

-- were given.

local rname, bracket = args[1], args.bracket

return mw.ustring.bracket:format(bracket, rpage.prefixedText)

end

if type(rname) ~= "string" or not mw.ustring.match(rname, "%S") then return end

bracket = bracket and "[[%s]]" or "%s"

rname = mw.ustring.match(rname, "%[%[(.+)%]%]") or rname

-- Get the title object, passing the function through pcall

-- in case we are over the expensive function count limit.

local noError, rpage = pcall(mw.title.new, rname)

if not noError or not rpage then

-- mw.title.new failed, so use the passed page name.

return mw.ustring.format(bracket, rname)

elseif not rpage.isRedirect then

-- the page is not a redirect, so use the normalized name of the page we

-- were given.

return mw.ustring.format(bracket, rpage.prefixedText)

end

-- Match the redirect target text from the page content.
local redirect = mw.ustringstring.match(
rpage:getContent() or "",
"^%s*#[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt]%s*:?%s*%[%[([^%[%]]-)%]%]" )

)

if redirect then

-- Decode html entities and percent encodings.

redirect = mw.text.decode(redirect, true)

redirect = mw.uritext.decode(redirect, 'WIKI'true)

redirect = mw.texturi.decode(redirect, true'WIKI')

return mw.ustring.bracket:format(bracket, redirect)

else

else

return mw.ustring.format('<span class="error">[[Module:redirect]] error: could not parse redirect - [[%s]]</span>', rname)

-- The page is a redirect, but matching failed. This indicates a bug in

end

-- the redirect matching pattern, so throw an error.

error('could not parse redirect on page [[:' .. rname .. ']]')

end

end