From 1b642d4e7d6371236c8af30bb35d370741dae6f1 Mon Sep 17 00:00:00 2001
From: Mark Baker <mark@lange.demon.co.uk>
Date: Sun, 10 Jun 2012 22:05:00 +0000
Subject: [PATCH] Validate existence of PDF Renderer library before
 instantiating renderer class

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@91572 2327b42d-5241-43d6-9e2a-de5ac946f064
---
 Classes/PHPExcel/Writer/PDF/DomPDF.php | 7 ++++++-
 Classes/PHPExcel/Writer/PDF/mPDF.php   | 7 ++++++-
 Classes/PHPExcel/Writer/PDF/tcPDF.php  | 9 +++++++--
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/Classes/PHPExcel/Writer/PDF/DomPDF.php b/Classes/PHPExcel/Writer/PDF/DomPDF.php
index 2784e14..82bfaea 100644
--- a/Classes/PHPExcel/Writer/PDF/DomPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/DomPDF.php
@@ -27,7 +27,12 @@
 
 
 /** Require DomPDF library */
-require_once PHPExcel_Settings::getPdfRendererPath() . '/dompdf_config.inc.php';
+$pdfRendererClassFile = PHPExcel_Settings::getPdfRendererPath() . '/dompdf_config.inc.php';
+if (file_exists($pdfRendererClassFile)) {
+	require_once $pdfRendererClassFile;
+} else {
+	throw new Exception('Unable to load PDF Rendering library');
+}
 
 /**
  * PHPExcel_Writer_PDF_DomPDF
diff --git a/Classes/PHPExcel/Writer/PDF/mPDF.php b/Classes/PHPExcel/Writer/PDF/mPDF.php
index e8ff320..ccd17a2 100644
--- a/Classes/PHPExcel/Writer/PDF/mPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/mPDF.php
@@ -27,7 +27,12 @@
 
 
 /** Require mPDF library */
-require_once PHPExcel_Settings::getPdfRendererPath() . '/mpdf.php';
+$pdfRendererClassFile = PHPExcel_Settings::getPdfRendererPath() . '/mpdf.php';
+if (file_exists($pdfRendererClassFile)) {
+	require_once $pdfRendererClassFile;
+} else {
+	throw new Exception('Unable to load PDF Rendering library');
+}
 
 /**
  * PHPExcel_Writer_PDF_mPDF
diff --git a/Classes/PHPExcel/Writer/PDF/tcPDF.php b/Classes/PHPExcel/Writer/PDF/tcPDF.php
index f342a65..08e7ca7 100644
--- a/Classes/PHPExcel/Writer/PDF/tcPDF.php
+++ b/Classes/PHPExcel/Writer/PDF/tcPDF.php
@@ -27,8 +27,13 @@
 
 
 /** Require tcPDF library */
-$k_path_url = PHPExcel_Settings::getPdfRendererPath();
-require_once PHPExcel_Settings::getPdfRendererPath() . '/tcpdf.php';
+$pdfRendererClassFile = PHPExcel_Settings::getPdfRendererPath() . '/tcpdf.php';
+if (file_exists($pdfRendererClassFile)) {
+	$k_path_url = PHPExcel_Settings::getPdfRendererPath();
+	require_once $pdfRendererClassFile;
+} else {
+	throw new Exception('Unable to load PDF Rendering library');
+}
 
 /**
  * PHPExcel_Writer_PDF_tcPDF