/usr/share/acl2-4.3/books/unicode/read-file-bytes.lisp is in acl2-books-source 4.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 | ;; Processing Unicode Files with ACL2
;; Copyright (C) 2005-2006 by Jared Davis <jared@cs.utexas.edu>
;;
;; This program 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 of the License, or (at your option)
;; any later version.
;;
;; This program 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
;; this program; if not, write to the Free Software Foundation, Inc., 59 Temple
;; Place - Suite 330, Boston, MA 02111-1307, USA.
(in-package "ACL2")
(include-book "file-measure")
(include-book "unsigned-byte-listp")
(local (include-book "open-input-channel"))
(local (include-book "close-input-channel"))
(local (include-book "read-byte"))
(local (include-book "tools/mv-nth" :dir :system))
(set-state-ok t)
(defun tr-read-byte$-all (channel state acc)
(declare (xargs :guard (and (state-p state)
(symbolp channel)
(open-input-channel-p channel :byte state)
(true-listp acc))
:measure (file-measure channel state)))
(if (mbt (state-p state))
(mv-let (byte state)
(read-byte$ channel state)
(if (eq byte nil)
(mv (reverse acc) state)
(tr-read-byte$-all channel state (cons byte acc))))
(mv nil state)))
(defun read-byte$-all (channel state)
(declare (xargs :guard (and (state-p state)
(symbolp channel)
(open-input-channel-p channel :byte state))
:measure (file-measure channel state)
:verify-guards nil))
(mbe
:logic (if (state-p state)
(mv-let (byte state)
(read-byte$ channel state)
(if (null byte)
(mv nil state)
(mv-let (rest state)
(read-byte$-all channel state)
(mv (cons byte rest) state))))
(mv nil state))
:exec (tr-read-byte$-all channel state nil)))
(defun read-file-bytes (filename state)
(declare (xargs :guard (and (state-p state)
(stringp filename))
:verify-guards nil))
(mv-let (channel state)
(open-input-channel filename :byte state)
(if channel
(mv-let (data state)
(read-byte$-all channel state)
(let ((state (close-input-channel channel state)))
(mv data state)))
(mv "Error opening file." state))))
(encapsulate
()
(local (defthm lemma-decompose-impl
(equal (tr-read-byte$-all channel state acc)
(list (mv-nth 0 (tr-read-byte$-all channel state acc))
(mv-nth 1 (tr-read-byte$-all channel state acc))))
:rule-classes nil))
(local (defthm lemma-decompose-spec
(equal (read-byte$-all channel state)
(list (mv-nth 0 (read-byte$-all channel state))
(mv-nth 1 (read-byte$-all channel state))))
:rule-classes nil))
(local (defthm lemma-data-equiv
(implies (and (state-p1 state)
(symbolp channel)
(open-input-channel-p1 channel :byte state)
(true-listp acc))
(equal (mv-nth 0 (tr-read-byte$-all channel state acc))
(revappend acc (mv-nth 0 (read-byte$-all channel state)))))))
(local (defthm lemma-state-equiv
(equal (mv-nth 1 (tr-read-byte$-all channel state acc))
(mv-nth 1 (read-byte$-all channel state)))))
(local (defthm lemma-equiv
(implies (and (state-p1 state)
(symbolp channel)
(open-input-channel-p1 channel :byte state))
(equal (tr-read-byte$-all channel state nil)
(read-byte$-all channel state)))
:hints(("Goal" :in-theory (disable tr-read-byte$-all read-byte$-all)
:use ((:instance lemma-decompose-impl (acc nil))
(:instance lemma-decompose-spec)
(:instance lemma-data-equiv (acc nil)))))))
(verify-guards read-byte$-all))
(defthm state-p1-of-read-byte$-all
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :byte state)))
(state-p1 (mv-nth 1 (read-byte$-all channel state)))))
(defthm open-input-channel-p1-of-read-byte$-all
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :byte state)))
(open-input-channel-p1 channel :byte
(mv-nth 1 (read-byte$-all channel state)))))
(defthm integer-listp-of-read-byte$-all
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :byte state)))
(integer-listp (mv-nth 0 (read-byte$-all channel state)))))
(defthm unsigned-byte-listp-of-read-byte$-all
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :byte state)))
(unsigned-byte-listp 8 (mv-nth 0 (read-byte$-all channel state))))
:hints(("Goal" :in-theory (enable read-byte$-all))))
(defthm true-listp-of-read-byte$-all
(true-listp (mv-nth 0 (read-byte$-all channel state)))
:rule-classes (:rewrite :type-prescription)
:hints(("Goal" :in-theory (enable read-byte$-all))))
(verify-guards read-file-bytes)
(defthm state-p1-of-read-file-bytes
(implies (and (force (state-p1 state))
(force (stringp filename)))
(state-p1 (mv-nth 1 (read-file-bytes filename state)))))
(defthm integer-listp-of-read-file-bytes
(implies (and (not (stringp (mv-nth 0 (read-file-bytes filename state))))
(force (state-p1 state))
(force (stringp filename)))
(integer-listp (mv-nth 0 (read-file-bytes filename state)))))
(defthm unsigned-byte-listp-of-read-file-bytes
(implies (and (not (stringp (mv-nth 0 (read-file-bytes filename state))))
(force (state-p1 state))
(force (stringp filename)))
(unsigned-byte-listp 8 (mv-nth 0 (read-file-bytes filename state))))
:hints(("Goal" :in-theory (enable read-file-bytes))))
(defthm true-listp-of-read-file-bytes
(implies (and (not (stringp (mv-nth 0 (read-file-bytes filename state))))
(force (state-p1 state))
(force (stringp filename)))
(true-listp (mv-nth 0 (read-file-bytes filename state))))
:hints(("Goal" :in-theory (enable read-file-bytes))))
(in-theory (disable tr-read-byte$-all read-byte$-all read-file-bytes))
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