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diff --git a/modules/autorotate/lib/pel/PelException.php b/modules/autorotate/lib/pel/PelException.php
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+++ b/modules/autorotate/lib/pel/PelException.php
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+<?php
+
+/**
+ *  PEL: PHP Exif Library.  A library with support for reading and
+ *  writing all Exif headers in JPEG and TIFF images using PHP.
+ *
+ *  Copyright (C) 2004, 2005  Martin Geisler.
+ *
+ *  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 in the file COPYING; if not, write to the
+ *  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ *  Boston, MA 02110-1301 USA
+ */
+
+/* $Id$ */
+
+
+/**
+ * Standard PEL exception.
+ *
+ * @author Martin Geisler <mgeisler@users.sourceforge.net>
+ * @version $Revision$
+ * @date $Date$
+ * @license http://www.gnu.org/licenses/gpl.html GNU General Public
+ * License (GPL)
+ * @package PEL
+ */
+
+/**
+ * A printf() capable exception.
+ *
+ * This class is a simple extension of the standard Exception class in
+ * PHP, and all the methods defined there retain their original
+ * meaning.
+ *
+ * @package PEL
+ * @subpackage Exception
+ */
+class PelException extends Exception {
+
+    /**
+     * Construct a new PEL exception.
+     *
+     * @param string $fmt an optional format string can be given.  It
+     * will be used as a format string for vprintf().  The remaining
+     * arguments will be available for the format string as usual with
+     * vprintf().
+     *
+     * @param mixed $args,... any number of arguments to be used with
+     * the format string.
+     */
+    function __construct(/* fmt, args... */) {
+        $args = func_get_args();
+        $fmt = array_shift($args);
+        parent::__construct(vsprintf($fmt, $args));
+    }
+}
+
+
+/**
+ * Exception throw if invalid data is found.
+ *
+ * @author Martin Geisler <mgeisler@users.sourceforge.net>
+ * @package PEL
+ * @subpackage Exception
+ */
+class PelInvalidDataException extends PelException {}
+
+/**
+ * Exception throw if an invalid argument is passed.
+ *
+ * @author Martin Geisler <mgeisler@users.sourceforge.net>
+ * @package PEL
+ * @subpackage Exception
+ */
+class PelInvalidArgumentException extends PelException {}
+