Regular Expression URL ReWrite

Question

This is my first post on here and I must admit my knowledge of regular expressions is minimal.

We have recently upgraded our internal intranet from sharepoint 2003 to 2010. During this process we broke down a single site into multiple site collections which added /sites into the URL for the different sites

eg

http_://intranet/global > http_://intranet/sites/global
http_://intranet/workplaces > http_://intranet/sites/workpaces

I have tried playing around with regular expressions to re-write static URLs to be rewritten to include /sites

Here is my attempt

You should see the last two records are not being wr-written correctly. Can anyone help me create the correct rule?

Answer 1

REGEX
You may use this:

/^(http://[^/]+)?/(?!(?:sites|SitePages)/)(.*)$/mg

with this replacement

\\1/sites/\\2

DEMO
http://regex101.com/r/zH6dZ5

RESULTS

http://intranet/global                  >  http://intranet/sites/global
    /sites/global                           >  /sites/global
    /page/file.ext                          >  /sites/page/file.ext
    /sites/other                            >  /sites/other
    /page.ext                               >  /sites/page.ext
    /intranet/global                        >  /sites/intranet/global
    http_://intranet/SitePages/default.aspx > http_://intranet/SitePages/default.aspx