*************************************************************************
Copyright (C) Olivetti 1989
All Rights reserved
Use and copy of this software and preparation of derivative works based
upon this software are permitted to any person, provided this same
copyright notice and the following Olivetti warranty disclaimer are
included in any copy of the software or any modification thereof or
derivative work therefrom made by any person.
This software is made available AS IS and Olivetti disclaims all
warranties with respect to this software, whether expressed or implied
under any law, including all implied warranties of merchantibility and
fitness for any purpose. In no event shall Olivetti be liable for any
damages whatsoever resulting from loss of use, data or profits or
otherwise arising out of or in connection with the use or performance
of this software.
*************************************************************************
Copyright (C) 1993, Digital Equipment Corporation
All rights reserved.
See the file COPYRIGHT for a full description.
MODULE M3Directory;
IMPORT
M3Extension, FS, Pathname, OSError;
REVEAL
Iter = Public BRANDED OBJECT
d: Pathname.T; (* name of directory we're iterating *)
e: M3Extension.TSet; (* extensions this iterator is interested in *)
dirIter: FS.Iterator;
OVERRIDES
next := Next;
close := Close;
END;
PUBLIC
PROCEDURE NewIter(
d: Pathname.T;
exts: M3Extension.TSet
:= M3Extension.TSet{FIRST(M3Extension.T)..LAST(M3Extension.T)})
: Iter RAISES {OSError.E} =
BEGIN
RETURN NEW(Iter, d := d, e := exts, dirIter := FS.Iterate(d));
END NewIter;
PROCEDURE Close(t: Iter)=
BEGIN
t.dirIter.close();
END Close;
PUBLIC
PROCEDURE Next(
t: Iter;
VAR name: TEXT;
VAR ext: M3Extension.T)
: BOOLEAN =
VAR
p: Pathname.T;
BEGIN
WHILE t.dirIter.next(p) DO
IF M3Extension.Has(p, ext) THEN
IF ext IN t.e THEN
name := Pathname.LastBase(p);
RETURN TRUE;
END;
END;
END;
RETURN FALSE;
END Next;
BEGIN
END M3Directory.