Module:Redirect: Difference between revisions

From Roses, Tulips, & Liberty
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m (Protected Module:Redirect: used in MediaWiki:Protectedpagetext ([Edit=Block all non-admin users] (indefinite) [Move=Block all non-admin users] (indefinite)))
(Suppress errors on non-existent pages - was causing an error to appear on MediaWiki:Protectedpagetext in some cases. Also use pcall for mw.title.new, and a few other tweaks.)
Line 7: Line 7:
-- [[{{#invoke:redirect|main|redirect-page-name}}]] and {{#invoke:redirect|main|redirect-page-name|bracket=yes}}
-- [[{{#invoke:redirect|main|redirect-page-name}}]] and {{#invoke:redirect|main|redirect-page-name|bracket=yes}}


p={}
local p = {}


function p.main(frame)
function p.main(frame)
-- If called via #invoke, use the args passed into the invoking
local args, pargs = frame.args, (frame:getParent() or {}).args or {}
local rname, bracket = args[1] or pargs[1], args.bracket or pargs.bracket
-- template, or the args passed to #invoke if any exist. Otherwise
-- assume args are being passed directly in from the debug console
-- or from another Lua module.
local origArgs
if frame == mw.getCurrentFrame() then
origArgs = frame:getParent().args
for k, v in pairs( frame.args ) do
origArgs = frame.args
break
end
else
origArgs = frame
end
-- Trim whitespace and remove blank arguments.
local args = {}
for k, v in pairs( origArgs ) do
v = mw.text.trim( v )
if v ~= '' then
args[k] = v
end
end
local rname, bracket = args[1], args.bracket
if not rname or not mw.ustring.match(rname, "%S") then return "" end
if type(rname) ~= "string" or not mw.ustring.match(rname, "%S") then return end
bracket = bracket and "[[%s]]" or "%s"
bracket = bracket and "[[%s]]" or "%s"
rname = mw.ustring.match(rname,"%[%[(.+)%]%]") or rname
rname = mw.ustring.match(rname, "%[%[(.+)%]%]") or rname
-- Get the title object, passing the function through pcall
local rpage, err = mw.title.new(rname)
-- in case we are over the expensive function count limit.
local noError, rpage = pcall(mw.title.new, rname)
-- avoid expensive operation when nothing to do
if not rpage then
if not noError or noError and not rpage or not rpage.isRedirect then
err = "File not found (mw.title.new failed)"
-- mw.title.new failed, or the page is not a redirect, so use the passed page name.
return mw.ustring.format(bracket, rname)
elseif rpage.id == 0 then
end
err = "File not found (id=0):"

elseif not rpage.isRedirect then
local redirect = mw.ustring.match(rpage:getContent() or "", "^%s*#[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt]%s*%[%[([^%[%]]-)%]%]" )
return mw.ustring.format(bracket, rname) -- not a redirect so use passed page name (for some general-purpose template use)
if redirect then
-- Decode html entities and percent encodings.
redirect = mw.text.decode(redirect, true)
redirect = mw.uri.decode(redirect, 'WIKI')
return mw.ustring.format(bracket, redirect)
else
else
return mw.ustring.format('<span class="error">[[Module:redirect]] error: could not parse redirect - [[%s]]</span>', rname)
local redirect = mw.ustring.match( rpage:getContent() or "", "^#[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt]%s*%[%[(.-)%]%]" )
if redirect then
return mw.ustring.format(bracket, redirect)
end
err = "failed to understand"
end
end
return '<span style="text-color:red;">[[Module:redirect]] error: ' .. err .. ' - [[' .. rname .. ']]</span>'
end
end