Excel2007 disk cache

Classes/PHPExcel/Shared/TempFileTracker.php

@@ -0,0 +1,88 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2014 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_Shared_TempFileTracker
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+/**
+ * PHPExcel_Shared_TempFileTracker
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_Shared_TempFileTracker
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Shared_TempFileTracker
+{
+	/**
+	 * List of created temporary files
+	 *
+	 * @var array
+	 */
+	private $_files;
+
+	function __construct ()
+	{
+		$this->_files = array ();
+	}
+
+	function __destruct ()
+	{
+		$this->removeAllFiles ();
+	}
+
+	/**
+	 * Register a new temporary file.
+	 *
+	 * @param string $filename
+	 */
+	public function registerFile ($filename)
+	{
+		$this->_files[] = $filename;
+	}
+
+	/**
+	 * Generate a new temporary file name, and register it.
+	 *
+	 * @param string $prefix the new filename prefix.
+	 * @return string the new temporary filename.
+	 */
+	public function getNewFile ($prefix)
+	{
+		$filename = @tempnam (PHPExcel_Shared_File::sys_get_temp_dir(), $prefix);
+		$this->registerFile ($filename);
+		return $filename;
+	}
+
+	/**
+	 * Remove all the registered files.
+	 */
+	public function removeAllFiles ()
+	{
+		foreach ($this->_files as $file)
+			unlink ($file);
+		$this->_files = array ();
+	}
+}
+
+?>

Classes/PHPExcel/Shared/XMLWriter.php

@@ -42,36 +42,33 @@
  * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
  */
 class PHPExcel_Shared_XMLWriter extends XMLWriter {
-	/** Temporary storage method */
-	const STORAGE_MEMORY	= 1;
-	const STORAGE_DISK		= 2;
+	const FLUSH_FREQUENCY = 100;
 
 	/**
 	 * Temporary filename
 	 *
 	 * @var string
 	 */
-	private $_tempFileName = '';
+	private $_filename = '';
+
+	private $counter;
 
 	/**
 	 * Create a new PHPExcel_Shared_XMLWriter instance
 	 *
-	 * @param int		$pTemporaryStorage			Temporary storage location
-	 * @param string	$pTemporaryStorageFolder	Temporary storage folder
+	 * @param string	$filename	Temporary storage filename (empty to use memory)
 	 */
-	public function __construct($pTemporaryStorage = self::STORAGE_MEMORY, $pTemporaryStorageFolder = NULL) {
+	public function __construct($filename = NULL) {
 		// Open temporary storage
-		if ($pTemporaryStorage == self::STORAGE_MEMORY) {
+		if (!$filename) {
 			$this->openMemory();
 		} else {
-			// Create temporary filename
-			if ($pTemporaryStorageFolder === NULL)
-				$pTemporaryStorageFolder = PHPExcel_Shared_File::sys_get_temp_dir();
-			$this->_tempFileName = @tempnam($pTemporaryStorageFolder, 'xml');
+			$this->_filename = $filename;
 
 			// Open storage
-			if ($this->openUri($this->_tempFileName) === false) {
+			if ($this->openUri($this->_filename) === false) {
 				// Fallback to memory...
+				$this->_filename = '';
 				$this->openMemory();
 			}
 		}
@@ -80,16 +77,44 @@ public function __construct($pTemporaryStorage = self::STORAGE_MEMORY, $pTempora
 		if (DEBUGMODE_ENABLED) {
 			$this->setIndent(true);
 		}
+		$this->counter = self::FLUSH_FREQUENCY;
 	}
 
-	/**
-	 * Destructor
-	 */
-	public function __destruct() {
-		// Unlink temporary files
-		if ($this->_tempFileName != '') {
-			@unlink($this->_tempFileName);
-		}
+	public function flush($empty=true)
+	{
+		parent::flush($empty);
+		$this->counter = self::FLUSH_FREQUENCY;
+	}
+
+	private function flushIfNecessary()
+	{
+		if ($this->_filename == '')
+			return;
+
+		--$this->counter;
+		if ($this->counter <= 0)
+			$this->flush();
+	}
+
+	public function endElement()
+	{
+		$ret = parent::endElement();
+		$this->flushIfNecessary();
+		return $ret;
+	}
+
+	public function writeElement($name, $content=null)
+	{
+		$ret = parent::writeElement($name, $content);
+		$this->flushIfNecessary();
+		return $ret;
+	}
+
+	public function writeAttribute($name, $value)
+	{
+		$ret = parent::writeAttribute($name, $value);
+		$this->flushIfNecessary();
+		return $ret;
 	}
 
 	/**
@@ -98,14 +123,23 @@ public function __destruct() {
 	 * @return $data
 	 */
 	public function getData() {
-		if ($this->_tempFileName == '') {
+		if ($this->_filename == '') {
 			return $this->outputMemory(true);
 		} else {
 			$this->flush();
-			return file_get_contents($this->_tempFileName);
+			return file_get_contents($this->_filename);
 		}
 	}
 
+	/**
+	 * Get the temporary file name.
+	 *
+	 * @return filename;
+	 */
+	public function getFileName() {
+		return $this->_filename;
+	}
+
 	/**
 	 * Fallback method for writeRaw, introduced in PHP 5.2
 	 *

Classes/PHPExcel/Shared/ZipArchive.php

@@ -85,6 +85,30 @@ public function close()
 	{
 	}
 
+    /**
+     * Add a new file to the zip archive.
+     *
+     * @param	string	$filename		The path to the file to add to the zip archive
+     * @param	string	$localname		Directory/Name of the file to add to the zip archive
+     */
+    public function addFile($filename, $localname=null)
+    {
+        if (is_null ($localname))
+            $localname = $filename;
+
+        $filenameParts = pathinfo($localname);
+        copy($filename, $this->_tempDir.'/'.$filenameParts["basename"]);
+
+		$res = $this->_zip->add($this->_tempDir.'/'.$filenameParts["basename"],
+								PCLZIP_OPT_REMOVE_PATH, $this->_tempDir,
+								PCLZIP_OPT_ADD_PATH, $filenameParts["dirname"]
+							   );
+		if ($res == 0) {
+			throw new PHPExcel_Writer_Exception("Error zipping files : " . $this->_zip->errorInfo(true));
+		}
+
+		unlink($this->_tempDir.'/'.$filenameParts["basename"]);
+    }
 
     /**
 	 * Add a new file to the zip archive from a string of raw data.