;;; -*- Mode:Lisp; Readtable:ZL; Package:USER; Base:10; Patch-File:T -*-
;;; Patch file for System version 126.15
;;; Reason:
;;;  The DIRECTORY function was bombing out over TCP/FTP.  Teach
;;;  FS:FTP-ACCESS to ignore the :FAST option to DIRECTORY-LIST.
;;; Written 5-Aug-88 18:26:41 by keith (Keith Corbett) at site Gigamos Cambridge
;;; while running on Breaking Glass from band 2
;;; with Experimental System 126.14, ZWEI 125.11, ZMail 73.2, Local-File 75.2, File-Server 24.1, Unix-Interface 13.0, Tape 24.2, Lambda-Diag 17.0, microcode 1762, SDU Boot Tape 3.14, SDU ROM 103.



; From modified file DJ: L.NETWORK.IP-TCP.USER; FTP-ACCESS.LISP#58 at 5-Aug-88 18:26:42
#10R FILE-SYSTEM#: 
(COMPILER-LET ((*PACKAGE* (PKG-FIND-PACKAGE "FILE-SYSTEM")))
  (COMPILER::PATCH-SOURCE-FILE "SYS: NETWORK; IP-TCP; USER; FTP-ACCESS  "

(defmethod (ftp-access :directory-list) (given-pathname options)
  (let ((pathname (normalize-ftp-directory-list-pathname given-pathname host))
	(no-error-p nil)			;T to not generate errors
	(deleted-p nil)				;T to include deleted files
	(sorted-p nil)				;T to sort generated list
	(tcp:*tcp-stream-whostate* "Directory List"))
    (do ((l options (cdr l)))
	((null l))
      (case (car l)
	(:noerror (setq no-error-p t))
	(:sorted (setq sorted-p t))
	(:deleted (setq deleted-p t))
	(:fast nil)				;Not supported, not a problem
	(otherwise (ferror nil "~S is not a known DIRECTORY option" (car l)))))
    (with-open-file (s pathname :raw-directory-list t :error (not no-error-p))
      (if (errorp s)
	  s
	(let ((dir-list (ftp-access-canonicalize-directory-list
			  (cons
			    `(nil :pathname ,pathname)
			    (do ((line) (eofp) (list))
				(eofp (nreverse list))
			      (multiple-value (line eofp) (send s :line-in))
			      (when line
				(let ((plist (ftp-parse-directory-list-line line host pathname)))
				  (when plist
				    (let ((truename (getf (cdr plist) :truename))
					  (deleted (getf (cdr plist) :deleted)))
				      (when (or (not deleted) deleted-p)
					(when truename
					  (setf (car plist) truename))
					(push plist list)))))))))))
	  (when sorted-p
	    (let ((null-elem (assq nil dir-list)))
	      (and null-elem (setq dir-list (delq null-elem dir-list)))
	      (setq dir-list (sortcar dir-list #'pathname-lessp))
	      (and null-elem (push null-elem dir-list))))
	  dir-list)))))

))