Module:Redirect: Difference between revisions

Module:Redirect (edit)

Revision as of 22:00, 31 March 2013

324 bytes removed , 11 years ago

consistent parsing of passed page name, output when passed bracket, and interpretation of redirect

Anonymous user

wikipedia>Darklama

@@ Line 9: / Line 9: @@
 function p.main(frame)
-   args=frame.args
+    local args, pargs = frame.args, (frame:getParent() or {}).args or {}
-   parent=frame.getParent(frame)
+    local rname, bracket = args[1] or pargs[1], args.bracket or pargs.bracket
-   if parent then pargs = parent.args else pargs={} end
-   local rname=args[1] or pargs[1] or ""
+    if not rname or not mw.ustring.match(rname, "%S") then return "" end
-   local bracket=args.bracket or pargs.bracket
+    bracket = bracket and "[[%s]]" or "%s"
-   local bb = "";local be= "" -- store brackets if restoring to an output if bracket option is set
+    rname = mw.ustring.match(rname,"%[%[(.+)%]%]") or rname
-   if rname then
-       if mw.ustring.gsub(rname,"%s","") == "" then return "" end
+    local rpage, err = mw.title.new(rname)
-       if bracket then
-           local strip=mw.ustring.match(rname,"%[%[(.+)%]%]")
+    -- avoid expensive operation when nothing to do
-           if strip then rname=strip;bb="[[";be="]]" end
+    if not rpage then
-       end
+        err = "File not found (mw.title.new failed)"
-       else return ""
+    elseif rpage.id == 0 then
-   end
+        err = "File not found (id=0):"
-   local rpage=mw.title.new(rname)
+    elseif not rpage.isRedirect then
-   local err=""
+        return mw.ustring.format(bracket, rname) -- not a redirect so use passed page name (for some general-purpose template use)
-   if rpage then -- avoid possibly expensive FileExists if we don't have anything
+    else
-      if rpage.id ~= 0 then
+        local redirect = mw.ustring.match( rpage:getContent() or "", "^#[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt]%s*%[%[(.-)%]%]" )
-       --  if rpage.fileExists then
-            if rpage.isRedirect then
+        if redirect then
-               return (bb.. tostring(mw.ustring.match(tostring(rpage.getContent(rpage)),"[Rr][Ee][Dd][Ii][Rr][Ee][Cc][Tt].-%[%[(.-)%]%]")..be) or [=[<span style="text-color:red;">[[Module:redirect]] error: failed to understand - [[]=] .. rname .. [=[]]</span]=])
+             return mw.ustring.format(bracket, redirect)
-             else return rname -- not a redirect so leave the original text (for some general-purpose template use)
+        end
-            end
-      --   else err="File does not exist: "
+        err = "failed to understand"
-      --   end
+    end
-      else err="File not found (id=0):"
-      end
+    return '<span style="text-color:red;">[[Module:redirect]] error: ' .. err .. ' - [[' .. rname .. ']]</span>'
-   else err="File not found (mw.title.new failed)"
-   end
-   return [=[<span style="text-color:red;">[[Module:redirect]] error: ]=] .. err .. [=[ - [[]=] .. rname .. [=[]]</span>]=]
 end
 return p