;;; hex-util.el --- Functions to encode/decode hexadecimal string.
-;; Copyright (C) 1999, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 1999, 2001-2015 Free Software Foundation, Inc.
;; Author: Shuhei KOBAYASHI <shuhei@aqua.ocn.ne.jp>
;; Keywords: data
-;; This file is part of FLIM (Faithful Library about Internet Message).
+;; This file is part of GNU Emacs.
-;; 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, or
+;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
-;; This program is distributed in the hope that it will be useful,
+;; GNU Emacs 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; see the file COPYING. If not, write to
-;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(eval-when-compile
(defmacro hex-char-to-num (chr)
- (` (let ((chr (, chr)))
- (cond
- ((and (<= ?a chr)(<= chr ?f)) (+ (- chr ?a) 10))
- ((and (<= ?A chr)(<= chr ?F)) (+ (- chr ?A) 10))
- ((and (<= ?0 chr)(<= chr ?9)) (- chr ?0))
- (t (error "Invalid hexadecimal digit `%c'" chr))))))
+ `(let ((chr ,chr))
+ (cond
+ ((and (<= ?a chr)(<= chr ?f)) (+ (- chr ?a) 10))
+ ((and (<= ?A chr)(<= chr ?F)) (+ (- chr ?A) 10))
+ ((and (<= ?0 chr)(<= chr ?9)) (- chr ?0))
+ (t (error "Invalid hexadecimal digit `%c'" chr)))))
(defmacro num-to-hex-char (num)
- (` (aref "0123456789abcdef" (, num)))))
+ `(aref "0123456789abcdef" ,num)))
(defun decode-hex-string (string)
"Decode hexadecimal STRING to octet string."
(dst (make-string (/ len 2) 0))
(idx 0)(pos 0))
(while (< pos len)
-;;; logior and lsh are not byte-coded.
-;;; (aset dst idx (logior (lsh (hex-char-to-num (aref string pos)) 4)
-;;; (hex-char-to-num (aref string (1+ pos)))))
+ ;; logior and lsh are not byte-coded.
+ ;; (aset dst idx (logior (lsh (hex-char-to-num (aref string pos)) 4)
+ ;; (hex-char-to-num (aref string (1+ pos)))))
(aset dst idx (+ (* (hex-char-to-num (aref string pos)) 16)
(hex-char-to-num (aref string (1+ pos)))))
(setq idx (1+ idx)
(dst (make-string (* len 2) 0))
(idx 0)(pos 0))
(while (< pos len)
-;;; logand and lsh are not byte-coded.
-;;; (aset dst idx (num-to-hex-char (logand (lsh (aref string pos) -4) 15)))
+ ;; logand and lsh are not byte-coded.
+ ;; (aset dst idx (num-to-hex-char (logand (lsh (aref string pos) -4) 15)))
(aset dst idx (num-to-hex-char (/ (aref string pos) 16)))
(setq idx (1+ idx))
-;;; (aset dst idx (num-to-hex-char (logand (aref string pos) 15)))
+ ;; (aset dst idx (num-to-hex-char (logand (aref string pos) 15)))
(aset dst idx (num-to-hex-char (% (aref string pos) 16)))
(setq idx (1+ idx)
pos (1+ pos)))
(provide 'hex-util)
-;;; arch-tag: fe8aaa79-6c86-400e-813f-5a8cc4cb3859
;;; hex-util.el ends here