Exposed function to find table in schema search list?

I'm writing a function that accepts a table name and digs some information
out about it. I'm developing on 7.3cvs w/schemas, and wanted my function to
use schemas.

If the user gives a full schema name (s.table), I find the table in pg_class
by comparing the ns oid and relname.

However, if the user doesn't give the full schema name, I have to find which
table they're looking for by examining current_schemas, iterating over each
schema in this path, and trying it.

Is there a function already in the backend to return a class oid, given a
name, by looking up the table in the current_schemas path? Would it make
sense for us to expose this, or write one, so that this small wheel doesn't
have to be re-invented everytime someone wants to find a table by just the
name?

Something like:

findtable(text) returns oid
findtable("foo") -> oid of foo (given current search path)
findtable("s.foo") -> oid of s.foo

I can write something in plpgsql (iterating over the array, checking each,
etc.), however, it would be nice if something was already there.

Any ideas?

Thanks!

- J.

Joel BURTON | joel(at)joelburton(dot)com | joelburton.com | aim: wjoelburton
Knowledge Management & Technology Consultant