From: tomo <tomo>
Date: Wed, 31 Jul 2002 10:18:43 +0000 (+0000)
Subject: Move emacs-lisp/mule-caesar.el to mail/.
X-Git-Tag: lemi-1_14_1~8
X-Git-Url: http://git.chise.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6ebbfe18adb615d3ad399d6d3f75f6796f7d814;p=elisp%2Flemi.git

Move emacs-lisp/mule-caesar.el to mail/.
---

diff --git a/mail/mule-caesar.el b/mail/mule-caesar.el
new file mode 100644
index 0000000..7f58584
--- /dev/null
+++ b/mail/mule-caesar.el
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+;;; mule-caesar.el --- ROT 13-47 Caesar rotation utility
+
+;; Copyright (C) 1997,1998 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Keywords: ROT 13-47, caesar, mail, news, text/x-rot13-47
+
+;; This file is part of APEL (A Portable Emacs Library).
+
+;; 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 (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 GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(defun mule-caesar-region (start end &optional stride-ascii)
+  "Caesar rotation of current region.
+Optional argument STRIDE-ASCII is rotation-size for Latin alphabet
+\(A-Z and a-z).  For non-ASCII text, ROT-N/2 will be performed in any
+case (N=charset-chars; 94 for 94 or 94x94 graphic character set; 96
+for 96 or 96x96 graphic character set)."
+  (interactive "r\nP")
+  (setq stride-ascii (if stride-ascii
+			 (mod stride-ascii 26)
+		       13))
+  (save-excursion
+    (save-restriction
+      (narrow-to-region start end)
+      (goto-char start)
+      (while (< (point)(point-max))
+	(let* ((chr (char-after (point))))
+	  (cond ((and (<= ?A chr) (<= chr ?Z))
+		 (setq chr (+ chr stride-ascii))
+		 (if (> chr ?Z)
+		     (setq chr (- chr 26))
+		   )
+		 (delete-char 1)
+		 (insert chr)
+		 )
+		((and (<= ?a chr) (<= chr ?z))
+		 (setq chr (+ chr stride-ascii))
+		 (if (> chr ?z)
+		     (setq chr (- chr 26))
+		   )
+		 (delete-char 1)
+		 (insert chr)
+		 )
+		((<= chr ?\x9f)
+		 (forward-char)
+		 )
+		(t
+		 (let* ((stride (lsh (charset-chars (char-charset chr)) -1))
+			(ret (mapcar (function
+				      (lambda (octet)
+					(if (< octet 80)
+					    (+ octet stride)
+					  (- octet stride)
+					  )))
+				     (cdr (split-char chr)))))
+		   (delete-char 1)
+		   (insert (make-char (char-charset chr)
+				      (car ret)(car (cdr ret))))
+		   )))
+	  )))))
+
+
+(require 'product)
+(product-provide (provide 'mule-caesar) (require 'apel-ver))
+
+;;; mule-caesar.el ends here