/usr/share/acl2-8.0dfsg/books/oslib/rmtree-logic.lisp is in acl2-books-source 8.0dfsg-1.
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; Copyright (C) 2013-2014 Centaur Technology
;
; Contact:
; Centaur Technology Formal Verification Group
; 7600-C N. Capital of Texas Highway, Suite 300, Austin, TX 78731, USA.
; http://www.centtech.com/
;
; License: (An MIT/X11-style license)
;
; Permission is hereby granted, free of charge, to any person obtaining a
; copy of this software and associated documentation files (the "Software"),
; to deal in the Software without restriction, including without limitation
; the rights to use, copy, modify, merge, publish, distribute, sublicense,
; and/or sell copies of the Software, and to permit persons to whom the
; Software is furnished to do so, subject to the following conditions:
;
; The above copyright notice and this permission notice shall be included in
; all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; Original author: Jared Davis <jared@centtech.com>
(in-package "OSLIB")
(include-book "read-acl2-oracle")
(include-book "std/util/define" :dir :system)
(local (xdoc::set-default-parents oslib))
(define rmtree
:short "Recursively delete files, like the shell command @('rm -rf'), and
return a success indicator so you can recover from errors."
((dir "The path that you want to remove, e.g., @('./foo/bar')" stringp)
&optional (state 'state))
:returns (mv (successp booleanp
:rule-classes :type-prescription
"Success indicator. We might fail due to file system
permissions, illegal file names, etc.")
(state state-p1
:hyp (force (state-p1 state))))
:long "<p>In the logic this function reads from the ACL2 oracle to determine
if it succeeds. In the execution, we attempt to delete the requested path, and
detect errors.</p>"
:ignore-ok t
(b* ((- (raise "Raw Lisp definition not installed?"))
((mv err val state) (read-acl2-oracle state))
(okp (and (not err)
(booleanp val)
val)))
(mv okp state)))
(define rmtree! ((path stringp) &key (state 'state))
:short "Recursively delete files, like the shell command @('rm -rf'), causing
a hard error on any failure."
(b* (((mv successp state) (rmtree path))
((unless successp)
(raise "Error removing ~s0." path)
state))
state))
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