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extend/phpexcel/PHPExcel/Shared/ZipStreamWrapper.php

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+<?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
+ * @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    1.8.0, 2014-03-02
+ */
+
+
+/**
+ * PHPExcel_Shared_ZipStreamWrapper
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel_Shared
+ * @copyright  Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+class PHPExcel_Shared_ZipStreamWrapper {
+	/**
+	 * Internal ZipAcrhive
+	 *
+	 * @var ZipAcrhive
+	 */
+    private $_archive;
+
+    /**
+     * Filename in ZipAcrhive
+     *
+     * @var string
+     */
+    private $_fileNameInArchive = '';
+
+    /**
+     * Position in file
+     *
+     * @var int
+     */
+    private $_position = 0;
+
+    /**
+     * Data
+     *
+     * @var mixed
+     */
+    private $_data = '';
+
+    /**
+     * Register wrapper
+     */
+    public static function register() {
+		@stream_wrapper_unregister("zip");
+		@stream_wrapper_register("zip", __CLASS__);
+    }
+
+    /**
+	 * Implements support for fopen().
+	 *
+	 * @param	string	$path			resource name including scheme, e.g.
+	 * @param	string	$mode			only "r" is supported
+	 * @param	int		$options		mask of STREAM_REPORT_ERRORS and STREAM_USE_PATH
+	 * @param	string  &$openedPath	absolute path of the opened stream (out parameter)
+	 * @return	bool    true on success
+     */
+    public function stream_open($path, $mode, $options, &$opened_path) {
+        // Check for mode
+        if ($mode{0} != 'r') {
+            throw new PHPExcel_Reader_Exception('Mode ' . $mode . ' is not supported. Only read mode is supported.');
+        }
+
+		$pos = strrpos($path, '#');
+		$url['host'] = substr($path, 6, $pos - 6); // 6: strlen('zip://')
+		$url['fragment'] = substr($path, $pos + 1);
+
+        // Open archive
+        $this->_archive = new ZipArchive();
+        $this->_archive->open($url['host']);
+
+        $this->_fileNameInArchive = $url['fragment'];
+        $this->_position = 0;
+        $this->_data = $this->_archive->getFromName( $this->_fileNameInArchive );
+
+        return true;
+    }
+
+    /**
+	 * Implements support for fstat().
+	 *
+	 * @return  boolean
+     */
+    public function statName() {
+        return $this->_fileNameInArchive;
+    }
+
+    /**
+	 * Implements support for fstat().
+	 *
+	 * @return  boolean
+     */
+    public function url_stat() {
+        return $this->statName( $this->_fileNameInArchive );
+    }
+
+    /**
+	 * Implements support for fstat().
+	 *
+	 * @return  boolean
+     */
+    public function stream_stat() {
+        return $this->_archive->statName( $this->_fileNameInArchive );
+    }
+
+    /**
+	 * Implements support for fread(), fgets() etc.
+	 *
+	 * @param   int		$count	maximum number of bytes to read
+	 * @return  string
+     */
+    function stream_read($count) {
+        $ret = substr($this->_data, $this->_position, $count);
+        $this->_position += strlen($ret);
+        return $ret;
+    }
+
+    /**
+	 * Returns the position of the file pointer, i.e. its offset into the file
+	 * stream. Implements support for ftell().
+	 *
+	 * @return  int
+     */
+    public function stream_tell() {
+        return $this->_position;
+    }
+
+    /**
+     * EOF stream
+	 *
+	 * @return	bool
+     */
+    public function stream_eof() {
+        return $this->_position >= strlen($this->_data);
+    }
+
+    /**
+     * Seek stream
+	 *
+	 * @param	int		$offset	byte offset
+	 * @param	int		$whence	SEEK_SET, SEEK_CUR or SEEK_END
+	 * @return	bool
+     */
+    public function stream_seek($offset, $whence) {
+        switch ($whence) {
+            case SEEK_SET:
+                if ($offset < strlen($this->_data) && $offset >= 0) {
+                     $this->_position = $offset;
+                     return true;
+                } else {
+                     return false;
+                }
+                break;
+
+            case SEEK_CUR:
+                if ($offset >= 0) {
+                     $this->_position += $offset;
+                     return true;
+                } else {
+                     return false;
+                }
+                break;
+
+            case SEEK_END:
+                if (strlen($this->_data) + $offset >= 0) {
+                     $this->_position = strlen($this->_data) + $offset;
+                     return true;
+                } else {
+                     return false;
+                }
+                break;
+
+            default:
+                return false;
+        }
+    }
+}