Need help with script to split LDAP "cn" into "firstname" in attribute-resolver.xml?

[Peter Schober]

* Eric Wedaa <Eric.Wedaa at marist.edu> [2015-11-10 15:56]:
>   My LDAP server does not populate the "firstname" field.  But it
> does populate the "cn" field in a space delimited format.   (ie
> "Eric Wedaa", "Eric W. Wedaa", "Eric Smith-Wedaa")
> 
>   Does anybody have an attribute-resolver.xml entry handy to break
> the "cn" field apart and load the "firstname" field?

See the last example at the very end of
https://wiki.shibboleth.net/confluence/display/SHIB2/ResolverMappedAttributeDefinition

And your ValueMap (child elements) could look something like
  <ad:ReturnValue>$1</ad:ReturnValue>
  <ad:SourceValue>^(.+) .+$</ad:SourceValue>
or maybe
  <ad:ReturnValue>$1</ad:ReturnValue>
  <ad:SourceValue>^([^ ]+) .+$</ad:SourceValue>

-peter