For testing purposes, I added a new source called main/util_uri.c;

It contains a routine parse_uri_components_regex() and friends which
tries to break an URI into its parts. These parts are stored in a new
uri_components structure within each request_rec and are therefore
available to all routines which act on a request.
Additionally, an unparse routine is supplied which re-assembles the
URI components back to an URI, optionally hiding the username:password@
part from ftp proxy requests, and other useful routines.
Within the structure, you find on a ready-for-use basis:
   scheme;     /* scheme ("http"/"ftp"/...) */
   hostinfo;   /* combined [user[:password]@]host[:port] */
   user;       /* user name, as in http://user:passwd@host:port/ */
   password;   /* password, as in http://user:passwd@host:port/ */
   hostname;   /* hostname from URI (or from Host: header) */
   port_str;   /* port string (integer representation is in "port") */
   path;       /* the request path (or "/" if only scheme://host was given) */
   query;      /* Everything after a '?' in the path, if present */
   fragment;   /* Trailing "#fragment" string, if present */
plus flags to indicate whether the strings have valid values.
This is meant to serve as the platform for *BIG* savings in
code complexity for the proxy module (and maybe the vhost logic).
NOTE: This code is enabled only if the WITH_UTIL_URI define is set;
currently this is not enabled by default.  [Martin Kraemer]

Reviewed by: Dean Gaudet (on a previous occasion)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@80337 13f79535-47bb-0310-9956-ffa450edef68