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diff --git a/admin/survey/excel/PHPExcel/Writer/PDF.php b/admin/survey/excel/PHPExcel/Writer/PDF.php
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+++ b/admin/survey/excel/PHPExcel/Writer/PDF.php
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+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2012 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Writer
+ * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version		1.7.8, 2012-10-12
+ */
+
+
+/**
+ * PHPExcel_Writer_PDF
+ *
+ * @category	PHPExcel
+ * @package		PHPExcel_Writer
+ * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Writer_PDF {
+
+    private $_renderer = NULL;
+
+	/**
+	 * Create a new PHPExcel_Writer_PDF
+	 *
+	 * @param 	PHPExcel	$phpExcel	PHPExcel object
+	 */
+	public function __construct(PHPExcel $phpExcel) {
+
+		$pdfLibraryName = PHPExcel_Settings::getPdfRendererName();
+		if (is_null($pdfLibraryName)) {
+			throw new Exception("PDF Rendering library has not been defined.");
+		}
+
+		$pdfLibraryPath = PHPExcel_Settings::getPdfRendererPath();
+		if (is_null($pdfLibraryName)) {
+			throw new Exception("PDF Rendering library path has not been defined.");
+		}
+		$includePath = str_replace('\\','/',get_include_path());
+		$rendererPath = str_replace('\\','/',$pdfLibraryPath);
+		if (strpos($rendererPath,$includePath) === false) {
+			set_include_path(get_include_path() . PATH_SEPARATOR . $pdfLibraryPath);
+		}
+
+		$rendererName = 'PHPExcel_Writer_PDF_'.$pdfLibraryName;
+		$this->_renderer = new $rendererName($phpExcel);
+	}
+
+
+    public function __call($name, $arguments)
+    {
+        if ($this->_renderer === NULL) {
+			throw new Exception("PDF Renderer has not been defined.");
+        }
+
+        return call_user_func_array(array($this->_renderer,$name),$arguments);
+    }
+
+}