;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: web-utils.lisp,v 1.7 2002/10/16 23:34:33 kevin Exp $
+;;;; $Id: web-utils.lisp,v 1.9 2002/10/18 05:14:49 kevin Exp $
;;;;
;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
(defvar *standard-xhtml-header*
#.(format nil "<?xml version=\"1.0\" standalone=\"yes\"?>~%<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3c.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">"))
-
+
+;;; User agent functions
+
+(defun user-agent-ie-p (agent)
+ "Takes a user-agent string and returns T for Internet Explorer."
+ (when (or (string-equal "Microsoft" (subseq agent 0 (length "Microsoft")))
+ (string-equal "Internet Explore" (subseq agent 0 (length "Internet Explore")))
+ (search "MSIE" agent))
+ t))
+
;;; URL Functions
(defvar *base-url* "")
(defun base-url! (url)
(setq *base-url* url))
-(defun make-url (page-name &key (base-dir *base-url*) (vars nil))
- (concatenate 'string base-dir page-name
- (if vars
- (string-trim-last-character
- (concatenate 'string "?"
- (mapcar-append-string
- #'(lambda (var)
- (when (and (car var) (cadr var))
- (concatenate 'string
- (car var) "=" (cadr var) "&")))
- vars)))
- "")))
+(defun make-url (page-name &key (base-dir *base-url*) (format :html) (vars nil))
+ (let ((amp (case format
+ (:html
+ "&")
+ ((:xml :ie-xml)
+ "&"))))
+ (concatenate 'string
+ base-dir page-name
+ (if vars
+ (let ((first-var (first vars)))
+ (concatenate 'string
+ "?" (car first-var) "=" (cadr first-var)
+ (mapcar-append-string
+ #'(lambda (var)
+ (when (and (car var) (cadr var))
+ (concatenate 'string
+ amp (car var) "=" (cadr var))))
+ (rest vars))))
+ ""))))