diff options
Diffstat (limited to 'admin/survey/export/libs/PHPPowerPoint/Shared/ZipStreamWrapper.php')
| -rw-r--r-- | admin/survey/export/libs/PHPPowerPoint/Shared/ZipStreamWrapper.php | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/admin/survey/export/libs/PHPPowerPoint/Shared/ZipStreamWrapper.php b/admin/survey/export/libs/PHPPowerPoint/Shared/ZipStreamWrapper.php new file mode 100644 index 0000000..1d5a5f5 --- /dev/null +++ b/admin/survey/export/libs/PHPPowerPoint/Shared/ZipStreamWrapper.php @@ -0,0 +1,182 @@ +<?php
+/**
+ * PHPPowerPoint
+ *
+ * Copyright (c) 2009 - 2010 PHPPowerPoint
+ *
+ * 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 PHPPowerPoint
+ * @package PHPPowerPoint_Shared
+ * @copyright Copyright (c) 2009 - 2010 PHPPowerPoint (http://www.codeplex.com/PHPPowerPoint)
+ * @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
+ * @version 0.1.0, 2009-04-27
+ */
+
+
+/** Register new zip wrapper */
+PHPPowerPoint_Shared_ZipStreamWrapper::register();
+
+
+/**
+ * PHPPowerPoint_Shared_ZipStreamWrapper
+ *
+ * @category PHPPowerPoint
+ * @package PHPPowerPoint_Shared
+ * @copyright Copyright (c) 2009 - 2010 PHPPowerPoint (http://www.codeplex.com/PHPPowerPoint)
+ */
+class PHPPowerPoint_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 $_data = '';
+
+ /**
+ * Register wrapper
+ */
+ public static function register() {
+ @stream_wrapper_unregister("zip");
+ @stream_wrapper_register("zip", __CLASS__);
+ }
+
+ /**
+ * Open stream
+ */
+ public function stream_open($path, $mode, $options, &$opened_path) {
+ // Check for mode
+ if ($mode{0} != 'r') {
+ throw new Exception('Mode ' . $mode . ' is not supported. Only read mode is supported.');
+ }
+
+ // Parse URL
+ $url = @parse_url($path);
+
+ // Fix URL
+ if (!is_array($url)) {
+ $url['host'] = substr($path, strlen('zip://'));
+ $url['path'] = '';
+ }
+ if (strpos($url['host'], '#') !== false) {
+ if (!isset($url['fragment'])) {
+ $url['fragment'] = substr($url['host'], strpos($url['host'], '#') + 1) . $url['path'];
+ $url['host'] = substr($url['host'], 0, strpos($url['host'], '#'));
+ unset($url['path']);
+ }
+ } else {
+ $url['host'] = $url['host'] . $url['path'];
+ unset($url['path']);
+ }
+
+ // 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;
+ }
+
+ /**
+ * Stat stream
+ */
+ public function stream_stat() {
+ return $this->_archive->statName( $this->_fileNameInArchive );
+ }
+
+ /**
+ * Read stream
+ */
+ function stream_read($count) {
+ $ret = substr($this->_data, $this->_position, $count);
+ $this->_position += strlen($ret);
+ return $ret;
+ }
+
+ /**
+ * Tell stream
+ */
+ public function stream_tell() {
+ return $this->_position;
+ }
+
+ /**
+ * EOF stream
+ */
+ public function stream_eof() {
+ return $this->_position >= strlen($this->_data);
+ }
+
+ /**
+ * Seek stream
+ */
+ 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;
+ }
+ }
+}
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