Re: virtual documents

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From: neuss@igd.fhg.de
X-Mailer-Igd: ## IGD.FHG.DE ## Wed, 7 Jul 93 18:29:00 +0200
Date: Wed, 7 Jul 93 18:28:47 +0200
Message-id: <9307071628.AA18925@wildturkey.igd.fhg.de>
To: www-talk@nxoc01.cern.ch
Subject: Re: virtual documents
Cc: appel@cih.hcuge.ch
Status: RO

Hello folx,

Ron D. Appel (appel@cih.hcuge.ch) writes:
> In several papers, I have read about virtual and real documents.
> How does one build (and send back to the client) a VIRTUAL DOCUMENT, for 

> example as a result of an index search?

That can be done in quite a simple way.. the easiest way is to modify the
HTTP server so that it creates a temporary file, then calls up a routine 

which handles the request and writes to that file, then sends and afterwards 

deletes it.
Here's an excerpt from our Server:
..
  tmpfile = (char *)tmpnam(NULL);
  sprintf(buf,
  "sh /LocalLibrary/httpd_index %s '%s' %s >/dev/null 2>/dev/null",
   file,keybuf,tmpfile);
  system(buf);
  if(stat(tmpfile,&finfo) == 0)
  {
     sprintf(logbuf,"INDEXFILE = %s\n",tmpfile);
     printl;
     send_file(tmpfile,fd);
     unlink(tmpfile);
  }
..
This is a bit of a dirty hack, but it works just fine :-)

Hope that helps,
Chris
/*
 *  Christian Neuss  %  neuss@igd.fhg.de  %  ..in the humdrum
 */