pathnames [Re: files, printers, etc. [Re: The feel of a LispM/List of running machines]]

[Rainer Joswig]

At 14:44 Uhr -0500 3.5.1997, cwg@DeepEddy.Com wrote:


>I was just thinking that in the area of pathnames, we clearly need to
include 

>the one universal standard:  the URL.

>

>What we need is a lispy equivalent to the URL.

>

>A URL contains 4 parts:

>

>	protocol

>	hostname

>	path

>	filename

>

>

>It then has all that ugly syntax in order to allow different parts of
the URL 

>to be merged in a unix-like manner.

>

>Clearly, an object which has those four fields would be a more lispy
way to do 

>this.  Also, you could generate a path object by parsing a URL like
this:

>

>	(parse-url "http://www.somehere.com/path/file.ext")


You mean like in CL-HTTP?


? <bold>(</bold>url:parse-url<bold>
"http://www.lavielle.com/~joswig/lisp.html")

</bold>#<<HTTP-OBJECT http://www.lavielle.com/~joswig/lisp.html
#x2E4B1CE>

:INTERNED


? <bold>(describe *)

</bold>#<<HTTP-OBJECT http://www.lavielle.com/~joswig/lisp.html
#x2E4B1CE>

Class: #<<STANDARD-CLASS URL:HTTP-OBJECT>

Wrapper: #<<CCL::CLASS-WRAPPER URL:HTTP-OBJECT #x2CD9EFE>

Instance slots

HTTP::PLIST: NIL

URL:DISPLAY-STRING: NIL

URL:NAME-STRING: "http://www.lavielle.com/~joswig/lisp.html"

URL:LANGUAGES: NIL

URL:AUTHENTICATION-REALM: NIL

URL:CAPABILITIES: NIL

URL:SECURE-SUBNETS: NIL

URL:EXPIRATION-FUNCTION: NIL

URL:MAX-AGE-FUNCTION: NIL

URL::DIRECTIVES: NIL

URL:HOST-STRING: "www.lavielle.com"

URL:HOST-OBJECT: 3258979647

URL:PORT: NIL

URL::ORIGIN-CLASS: URL:HTTP-OBJECT

URL:TRANSLATION-METHOD: NIL

URL:PATH: ("~joswig")

URL:OBJECT: "lisp"

URL:EXTENSION: "html"

PATHNAME: NIL

URL::URLS: NIL

Class slots

URL:SCHEME: "http"



Rainer Joswig, Lavielle EDV Systemberatung GmbH & Co, Lotharstrasse 2b,
D22041

Hamburg, Tel: +49 40 658088, Fax: +49 40 65808-202,

Email: joswig@lavielle.com , WWW: http://www.lavielle.com/~joswig/