--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/w3/url-parse.el	Mon Aug 13 08:48:42 2007 +0200
@@ -0,0 +1,193 @@
+;;; url-parse.el --- Uniform Resource Locator parser
+;; Author: wmperry
+;; Created: 1996/12/26 23:25:55
+;; Version: 1.3
+;; Keywords: comm, data, processes
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; Copyright (c) 1993-1996 by William M. Perry (wmperry@cs.indiana.edu)
+;;; Copyright (c) 1996 Free Software Foundation, Inc.
+;;;
+;;; This file is not part of GNU Emacs, but the same permissions apply.
+;;;
+;;; GNU Emacs is free software; you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 2, or (at your option)
+;;; any later version.
+;;;
+;;; GNU Emacs is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;;; Boston, MA 02111-1307, USA.
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(defmacro url-type (urlobj)
+  (` (aref (, urlobj) 0)))
+
+(defmacro url-user (urlobj)
+  (` (aref (, urlobj) 1)))
+
+(defmacro url-password (urlobj)
+  (` (aref (, urlobj) 2)))
+
+(defmacro url-host (urlobj)
+  (` (aref (, urlobj) 3)))
+
+(defmacro url-port (urlobj)
+  (` (or (aref (, urlobj) 4)
+	 (if (url-fullness (, urlobj))
+	     (cdr-safe (assoc (url-type (, urlobj)) url-default-ports))))))
+
+(defmacro url-filename (urlobj)
+  (` (aref (, urlobj) 5)))
+
+(defmacro url-target (urlobj)
+  (` (aref (, urlobj) 6)))
+
+(defmacro url-attributes (urlobj)
+  (` (aref (, urlobj) 7)))
+
+(defmacro url-fullness (urlobj)
+  (` (aref (, urlobj) 8)))
+
+(defmacro url-set-type (urlobj type)
+  (` (aset (, urlobj) 0 (, type))))
+
+(defmacro url-set-user (urlobj user)
+  (` (aset (, urlobj) 1 (, user))))
+
+(defmacro url-set-password (urlobj pass)
+  (` (aset (, urlobj) 2 (, pass))))
+
+(defmacro url-set-host (urlobj host)
+  (` (aset (, urlobj) 3 (, host))))
+
+(defmacro url-set-port (urlobj port)
+  (` (aset (, urlobj) 4 (, port))))
+
+(defmacro url-set-filename (urlobj file)
+  (` (aset (, urlobj) 5 (, file))))
+
+(defmacro url-set-target (urlobj targ)
+  (` (aset (, urlobj) 6 (, targ))))
+
+(defmacro url-set-attributes (urlobj targ)
+  (` (aset (, urlobj) 7 (, targ))))
+
+(defmacro url-set-full (urlobj val)
+  (` (aset (, urlobj) 8 (, val))))
+  
+(defun url-recreate-url (urlobj)
+  (concat (url-type urlobj) ":" (if (url-host urlobj) "//" "")
+	  (if (url-user urlobj)
+	      (concat (url-user urlobj)
+		      (if (url-password urlobj)
+			  (concat ":" (url-password urlobj)))
+		      "@"))
+	  (url-host urlobj)
+	  (if (and (url-port urlobj)
+		   (not (equal (url-port urlobj)
+			       (cdr-safe (assoc (url-type urlobj)
+						url-default-ports)))))
+	      (concat ":" (url-port urlobj)))
+	  (or (url-filename urlobj) "/")
+	  (if (url-target urlobj)
+	      (concat "#" (url-target urlobj)))
+	  (if (url-attributes urlobj)
+	      (concat ";"
+		      (mapconcat
+		       (function
+			(lambda (x)
+			  (if (cdr x)
+			      (concat (car x) "=" (cdr x))
+			    (car x)))) (url-attributes urlobj) ";")))))
+
+(defun url-generic-parse-url (url)
+  "Return a vector of the parts of URL.
+Format is [protocol username password hostname portnumber file reference]"
+  (cond
+   ((null url)
+    (make-vector 9 nil))
+   ((or (not (string-match url-nonrelative-link url))
+	(= ?/ (string-to-char url)))
+    (let ((retval (make-vector 9 nil)))
+      (url-set-filename retval url)
+      (url-set-full retval nil)
+      retval))
+   (t
+    (save-excursion
+      (set-buffer (get-buffer-create " *urlparse*"))
+      (set-syntax-table url-mailserver-syntax-table)
+      (let ((save-pos nil)
+	    (prot nil)
+	    (user nil)
+	    (pass nil)
+	    (host nil)
+	    (port nil)
+	    (file nil)
+	    (refs nil)
+	    (attr nil)
+	    (full nil)
+	    (inhibit-read-only t))
+	(erase-buffer)
+	(insert url)
+	(goto-char (point-min))
+	(setq save-pos (point))
+	(if (not (looking-at "//"))
+	    (progn
+	      (skip-chars-forward "a-zA-Z+.\\-")
+	      (downcase-region save-pos (point))
+	      (setq prot (buffer-substring save-pos (point)))
+	      (skip-chars-forward ":")
+	      (setq save-pos (point))))
+
+	;; We are doing a fully specified URL, with hostname and all
+	(if (looking-at "//")
+	    (progn
+	      (setq full t)
+	      (forward-char 2)
+	      (setq save-pos (point))
+	      (skip-chars-forward "^/")
+	      (downcase-region save-pos (point))
+	      (setq host (buffer-substring save-pos (point)))
+	      (if (string-match "^\\([^@]+\\)@" host)
+		  (setq user (url-match host 1)
+			host (substring host (match-end 0) nil)))
+	      (if (and user (string-match "\\([^:]+\\):\\(.*\\)" user))
+		  (setq pass (url-match user 2)
+			user (url-match user 1)))
+	      (if (string-match ":\\([0-9+]+\\)" host)
+		  (setq port (url-match host 1)
+			host (substring host 0 (match-beginning 0))))
+	      (if (string-match ":$" host)
+		  (setq host (substring host 0 (match-beginning 0))))
+	      (setq save-pos (point))))
+	;; Now check for references
+	(setq save-pos (point))
+	(skip-chars-forward "^#")
+	(if (eobp)
+	    nil
+          (delete-region
+           (point)
+           (progn
+             (skip-chars-forward "#")
+             (setq refs (buffer-substring (point) (point-max)))
+             (point-max))))
+	(goto-char save-pos)
+	(skip-chars-forward "^;")
+	(if (not (eobp))
+	    (setq attr (mm-parse-args (point) (point-max))
+		  attr (nreverse attr)))
+	(setq file (buffer-substring save-pos (point)))
+	(and port (string= port (or (cdr-safe (assoc prot url-default-ports))
+				    ""))
+	     (setq port nil))
+	(if (and host (string-match "%[0-9][0-9]" host))
+	    (setq host (url-unhex-string host)))
+	(vector prot user pass host port file refs attr full)))))) 
+
+(provide 'url-parse)