From 2cd33f5388f50ed7b5a959d04a8acbed05f01d3a Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Sun, 5 Jan 1997 23:43:10 +0000
Subject: [PATCH] Initial revision

---
 v7/src/runtime/ntdir.scm | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 v7/src/runtime/ntdir.scm

diff --git a/v7/src/runtime/ntdir.scm b/v7/src/runtime/ntdir.scm
new file mode 100644
index 000000000..7cec9a658
--- /dev/null
+++ b/v7/src/runtime/ntdir.scm
@@ -0,0 +1,101 @@
+#| -*-Scheme-*-
+
+$Id: ntdir.scm,v 1.1 1997/01/05 23:43:10 cph Exp $
+
+Copyright (c) 1997 Massachusetts Institute of Technology
+
+This material was developed by the Scheme project at the Massachusetts
+Institute of Technology, Department of Electrical Engineering and
+Computer Science.  Permission to copy this software, to redistribute
+it, and to use it for any purpose is granted, subject to the following
+restrictions and understandings.
+
+1. Any copy made of this software must include this copyright notice
+in full.
+
+2. Users of this software agree to make their best efforts (a) to
+return to the MIT Scheme project any improvements or extensions that
+they make, so that these may be included in future releases; and (b)
+to inform MIT of noteworthy uses of this software.
+
+3. All materials developed as a consequence of the use of this
+software shall duly acknowledge such use, in accordance with the usual
+standards of acknowledging credit in academic research.
+
+4. MIT has made no warrantee or representation that the operation of
+this software will be error-free, and MIT is under no obligation to
+provide any services, by way of maintenance, update, or otherwise.
+
+5. In conjunction with products arising from the use of this material,
+there shall be no use of the name of the Massachusetts Institute of
+Technology nor of any adaptation thereof in any advertising,
+promotional, or sales literature without prior written consent from
+MIT in each case. |#
+
+;;;; Directory Operations -- OS/2
+;;; package: (runtime directory)
+
+(declare (usual-integrations))
+
+(define *expand-directory-prefixes?* #t)
+
+(define (directory-read pattern #!optional sort? full?)
+  (let ((sort? (if (default-object? sort?) #t sort?))
+	(full? (if (default-object? full?) #f full?)))
+    (let ((entries
+	   (if full?
+	       (directory-read-full pattern)
+	       (directory-read-nosort pattern))))
+      (if (not sort?)
+	  entries
+	  (sort entries
+		(if full?
+		    (lambda (x y) (pathname<? (car x) (car y)))
+		    pathname<?))))))
+
+(define (pathname<? x y)
+  (string-ci<? (file-namestring x) (file-namestring y)))
+
+(define (directory-read-nosort pattern)
+  (let ((pattern (merge-pathnames pattern)))
+    (map (let ((directory-path (directory-pathname pattern)))
+	   (lambda (pathname)
+	     (merge-pathnames pathname directory-path)))
+	 (let ((fnames (generate-directory-pathnames pattern)))
+	   (fluid-let ((*expand-directory-prefixes?* #f))
+	     (map ->pathname fnames))))))
+
+(define (generate-directory-pathnames pathname)
+  (let ((channel (directory-channel-open (->namestring pathname))))
+    (let loop ((result '()))
+      (let ((name (directory-channel-read channel)))
+	(if name
+	    (loop (cons name result))
+	    (begin
+	      (directory-channel-close channel)
+	      result))))))
+
+(define (directory-read-full pattern)
+  (let ((pattern (merge-pathnames pattern)))
+    (map (let ((directory-path (directory-pathname pattern)))
+	   (lambda (entry)
+	     (cons (merge-pathnames (car entry) directory-path)
+		   (cdr entry))))
+	 (let ((entries (generate-directory-entries pattern)))
+	   (fluid-let ((*expand-directory-prefixes?* #f))
+	     (map (lambda (entry) (cons (->pathname (car entry)) (cdr entry)))
+		  entries))))))
+
+(define (generate-directory-entries pathname)
+  (let ((channel (directory-channel-open (->namestring pathname))))
+    (let loop ((result '()))
+      (let ((entry (directory-channel-read-entry channel)))
+	(if entry
+	    (loop (cons entry result))
+	    (begin
+	      (directory-channel-close channel)
+	      result))))))
+
+(define (directory-channel-read-entry channel)
+  ((ucode-primitive win32-directory-read 1)
+   (directory-channel/descriptor channel)))
\ No newline at end of file
-- 
2.25.1