--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/ProgressBar.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,209 @@
+<?php
+/**
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_ProgressBar
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: ProgressBar.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * Zend_ProgressBar offers an interface for multiple enviroments.
+ *
+ * @category  Zend
+ * @package   Zend_ProgressBar
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_ProgressBar
+{
+    /**
+     * Min value
+     *
+     * @var float
+     */
+    protected $_min;
+
+    /**
+     * Max value
+     *
+     * @var float
+     */
+    protected $_max;
+
+    /**
+     * Current value
+     *
+     * @var float
+     */
+    protected $_current;
+
+    /**
+     * Start time of the progressbar, required for ETA
+     *
+     * @var integer
+     */
+    protected $_startTime;
+
+    /**
+     * Current status text
+     *
+     * @var string
+     */
+    protected $_statusText = null;
+
+    /**
+     * Adapter for the output
+     *
+     * @var Zend_ProgressBar_Adapter
+     */
+    protected $_adapter;
+
+    /**
+     * Namespace for keeping the progressbar persistent
+     *
+     * @var string
+     */
+    protected $_persistenceNamespace = null;
+
+    /**
+     * Create a new progressbar backend.
+     *
+     * @param  Zend_ProgressBar_Adapter $adapter
+     * @param  float                    $min
+     * @param  float                    $max
+     * @param  string                   $persistenceNamespace
+     * @throws Zend_ProgressBar_Exception When $min is greater than $max
+     */
+    public function __construct(Zend_ProgressBar_Adapter $adapter, $min = 0, $max = 100, $persistenceNamespace = null)
+    {
+        // Check min/max values and set them
+        if ($min > $max) {
+            require_once 'Zend/ProgressBar/Exception.php';
+            throw new Zend_ProgressBar_Exception('$max must be greater than $min');
+        }
+
+        $this->_min     = (float) $min;
+        $this->_max     = (float) $max;
+        $this->_current = (float) $min;
+
+        // See if we have to open a session namespace
+        if ($persistenceNamespace !== null) {
+            require_once 'Zend/Session/Namespace.php';
+
+            $this->_persistenceNamespace = new Zend_Session_Namespace($persistenceNamespace);
+        }
+
+        // Set adapter
+        $this->_adapter = $adapter;
+
+        // Track the start time
+        $this->_startTime = time();
+
+        // See If a persistenceNamespace exists and handle accordingly
+        if ($this->_persistenceNamespace !== null) {
+            if (isset($this->_persistenceNamespace->isSet)) {
+                $this->_startTime  = $this->_persistenceNamespace->startTime;
+                $this->_current    = $this->_persistenceNamespace->current;
+                $this->_statusText = $this->_persistenceNamespace->statusText;
+            } else {
+                $this->_persistenceNamespace->isSet      = true;
+                $this->_persistenceNamespace->startTime  = $this->_startTime;
+                $this->_persistenceNamespace->current    = $this->_current;
+                $this->_persistenceNamespace->statusText = $this->_statusText;
+            }
+        } else {
+            $this->update();
+        }
+    }
+
+    /**
+     * Get the current adapter
+     *
+     * @return Zend_ProgressBar_Adapter
+     */
+    public function getAdapter()
+    {
+        return $this->_adapter;
+    }
+
+    /**
+     * Update the progressbar
+     *
+     * @param  float  $value
+     * @param  string $text
+     * @return void
+     */
+    public function update($value = null, $text = null)
+    {
+        // Update value if given
+        if ($value !== null) {
+            $this->_current = min($this->_max, max($this->_min, $value));
+        }
+
+        // Update text if given
+        if ($text !== null) {
+            $this->_statusText = $text;
+        }
+
+        // See if we have to update a namespace
+        if ($this->_persistenceNamespace !== null) {
+            $this->_persistenceNamespace->current    = $this->_current;
+            $this->_persistenceNamespace->statusText = $this->_statusText;
+        }
+
+        // Calculate percent
+        if ($this->_min === $this->_max) {
+            $percent = false;
+        } else {
+            $percent = (float) ($this->_current - $this->_min) / ($this->_max - $this->_min);
+        }
+
+        // Calculate ETA
+        $timeTaken = time() - $this->_startTime;
+
+        if ($percent === .0 || $percent === false) {
+            $timeRemaining = null;
+        } else {
+            $timeRemaining = round(((1 / $percent) * $timeTaken) - $timeTaken);
+        }
+
+        // Poll the adapter
+        $this->_adapter->notify($this->_current, $this->_max, $percent, $timeTaken, $timeRemaining, $this->_statusText);
+    }
+
+    /**
+     * Update the progressbar to the next value
+     *
+     * @param  string $text
+     * @return void
+     */
+    public function next($diff = 1, $text = null)
+    {
+        $this->update(max($this->_min, min($this->_max, $this->_current + $diff)), $text);
+    }
+
+    /**
+     * Call the adapters finish() behaviour
+     *
+     * @return void
+     */
+    public function finish()
+    {
+        if ($this->_persistenceNamespace !== null) {
+            unset($this->_persistenceNamespace->isSet);
+        }
+
+        $this->_adapter->finish();
+    }
+}