/usr/share/acl2-4.3/books/unicode/read-file-characters.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | ;; 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")
(set-state-ok t)
(include-book "file-measure")
(local (include-book "open-input-channel"))
(local (include-book "read-char"))
(local (include-book "close-input-channel"))
(local (include-book "revappend"))
(local (include-book "tools/mv-nth" :dir :system))
(defun tr-read-char$-all (channel state acc)
(declare (xargs :guard (and (state-p state)
(symbolp channel)
(open-input-channel-p channel :character state)
(true-listp acc))
:measure (file-measure channel state)))
(if (mbt (state-p state))
(mv-let (char state)
(read-char$ channel state)
(if (eq char nil)
(mv acc state)
(tr-read-char$-all channel state (cons char acc))))
(mv nil state)))
(defun read-char$-all (channel state)
(declare (xargs :guard (and (state-p state)
(symbolp channel)
(open-input-channel-p channel :character state))
:measure (file-measure channel state)
:verify-guards nil))
(mbe :logic (if (state-p state)
(mv-let (char state)
(read-char$ channel state)
(if (null char)
(mv nil state)
(mv-let (rest state)
(read-char$-all channel state)
(mv (cons char rest) state))))
(mv nil state))
:exec (mv-let (data state)
(tr-read-char$-all channel state nil)
(mv (reverse data) state))))
(defun read-file-characters (filename state)
"Read the entire file and return its contents as a list of characters."
(declare (xargs :guard (and (state-p state)
(stringp filename))
:verify-guards nil))
(mv-let (channel state)
(open-input-channel filename :character state)
(if channel
(mv-let (data state)
(read-char$-all channel state)
(let ((state (close-input-channel channel state)))
(mv data state)))
(mv "Error opening file." state))))
(defun read-file-characters-rev (filename state)
"Read the entire file and return its contents as a list of characters in
reverse order. This is faster than read-file-characters because it does
not need to reverse the accumulator."
(declare (xargs :guard (and (state-p state)
(stringp filename))
:verify-guards nil))
(mv-let (channel state)
(open-input-channel filename :character state)
(if channel
(mv-let (data state)
(tr-read-char$-all channel state nil)
(let ((state (close-input-channel channel state)))
(mv data state)))
(mv "Error opening file." state))))
(local (defthm lemma-decompose-impl
(equal (tr-read-char$-all channel state acc)
(list (mv-nth 0 (tr-read-char$-all channel state acc))
(mv-nth 1 (tr-read-char$-all channel state acc))))
:rule-classes nil))
(local (defthm lemma-decompose-spec
(equal (read-char$-all channel state)
(list (mv-nth 0 (read-char$-all channel state))
(mv-nth 1 (read-char$-all channel state))))
:rule-classes nil))
(local (defthm lemma-data-equiv
(implies (and (state-p1 state)
(symbolp channel)
(open-input-channel-p1 channel :character state)
(true-listp acc))
(equal (mv-nth 0 (tr-read-char$-all channel state acc))
(revappend (mv-nth 0 (read-char$-all channel state)) acc)))))
(local (defthm lemma-state-equiv
(equal (mv-nth 1 (tr-read-char$-all channel state acc))
(mv-nth 1 (read-char$-all channel state)))))
(local (defthm lemma-true-listp-impl
(implies (true-listp acc)
(true-listp (mv-nth 0 (tr-read-char$-all channel state acc))))
:rule-classes :type-prescription))
(local (defthm lemma-true-listp-spec
(true-listp (mv-nth 0 (read-char$-all channel state)))
:rule-classes :type-prescription))
(local (defthm lemma-equiv
(implies (and (state-p1 state)
(symbolp channel)
(open-input-channel-p1 channel :character state))
(equal (tr-read-char$-all channel state nil)
(mv (reverse (mv-nth 0 (read-char$-all channel state)))
(mv-nth 1 (read-char$-all channel state)))))
:hints(("Goal" :in-theory (disable tr-read-char$-all read-char$-all)
:use ((:instance lemma-decompose-impl (acc nil))
(:instance lemma-decompose-spec)
(:instance lemma-data-equiv (acc nil)))))))
(encapsulate
()
(local (include-book "rev"))
(verify-guards read-char$-all))
(defthm read-file-characters-rev-redefinition
(implies (and (force (stringp filename))
(force (state-p1 state)))
(equal (read-file-characters-rev filename state)
(mv-let (data state)
(read-file-characters filename state)
(if (stringp data)
(mv data state)
(mv (reverse data) state))))))
(defthm read-char$-all-preserves-state
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :character state)))
(state-p1 (mv-nth 1 (read-char$-all channel state)))))
(defthm read-char$-all-preserves-open-input-channel-p1
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :character state)))
(open-input-channel-p1 channel :character
(mv-nth 1 (read-char$-all channel state)))))
(defthm read-char$-all-character-listp
(implies (and (force (state-p1 state))
(force (symbolp channel))
(force (open-input-channel-p1 channel :character state)))
(character-listp (mv-nth 0 (read-char$-all channel state)))))
(verify-guards read-file-characters)
(verify-guards read-file-characters-rev)
(defthm read-file-characters-preserves-state
(implies (and (force (state-p1 state))
(force (stringp filename)))
(state-p1 (mv-nth 1 (read-file-characters filename state)))))
(defthm read-file-characters-error-or-character-list
(implies (and (not (stringp (mv-nth 0 (read-file-characters filename state))))
(force (state-p1 state))
(force (stringp filename)))
(character-listp (mv-nth 0 (read-file-characters filename state)))))
(in-theory (disable tr-read-char$-all
read-char$-all
read-file-characters
read-file-characters-rev))
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