From eba717f95f586d2538007bd18da6e9b32b076c30 Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Fri, 31 Oct 2008 22:12:14 +0000
Subject: Merge over vendor code.

git-svn-id: http://gallery.svn.sourceforge.net/svnroot/gallery/trunk/eval/gx/gallery3/trunk@18408 57fcd75e-5312-0410-8df3-f5eb6fbb1595
---
 kohana/helpers/upload.php | 162 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 162 insertions(+)
 create mode 100644 kohana/helpers/upload.php

(limited to 'kohana/helpers/upload.php')

diff --git a/kohana/helpers/upload.php b/kohana/helpers/upload.php
new file mode 100644
index 00000000..15839640
--- /dev/null
+++ b/kohana/helpers/upload.php
@@ -0,0 +1,162 @@
+<?php defined('SYSPATH') or die('No direct script access.');
+/**
+ * Upload helper class for working with the global $_FILES
+ * array and Validation library.
+ *
+ * $Id$
+ *
+ * @package    Core
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+class upload_Core {
+
+	/**
+	 * Save an uploaded file to a new location.
+	 *
+	 * @param   mixed    name of $_FILE input or array of upload data
+	 * @param   string   new filename
+	 * @param   string   new directory
+	 * @param   integer  chmod mask
+	 * @return  string   full path to new file
+	 */
+	public static function save($file, $filename = NULL, $directory = NULL, $chmod = 0644)
+	{
+		// Load file data from FILES if not passed as array
+		$file = is_array($file) ? $file : $_FILES[$file];
+
+		if ($filename === NULL)
+		{
+			// Use the default filename, with a timestamp pre-pended
+			$filename = time().$file['name'];
+		}
+
+		if (Kohana::config('upload.remove_spaces') === TRUE)
+		{
+			// Remove spaces from the filename
+			$filename = preg_replace('/\s+/', '_', $filename);
+		}
+
+		if ($directory === NULL)
+		{
+			// Use the pre-configured upload directory
+			$directory = Kohana::config('upload.directory', TRUE);
+		}
+
+		// Make sure the directory ends with a slash
+		$directory = rtrim($directory, '/').'/';
+
+		if ( ! is_dir($directory) AND Kohana::config('upload.create_directories') === TRUE)
+		{
+			// Create the upload directory
+			mkdir($directory, 0777, TRUE);
+		}
+
+		if ( ! is_writable($directory))
+			throw new Kohana_Exception('upload.not_writable', $directory);
+
+		if (is_uploaded_file($file['tmp_name']) AND move_uploaded_file($file['tmp_name'], $filename = $directory.$filename))
+		{
+			if ($chmod !== FALSE)
+			{
+				// Set permissions on filename
+				chmod($filename, $chmod);
+			}
+
+			// Return new file path
+			return $filename;
+		}
+
+		return FALSE;
+	}
+
+	/* Validation Rules */
+
+	/**
+	 * Tests if input data is valid file type, even if no upload is present.
+	 *
+	 * @param   array  $_FILES item
+	 * @return  bool
+	 */
+	public static function valid($file)
+	{
+		return (is_array($file)
+			AND isset($file['error'])
+			AND isset($file['name'])
+			AND isset($file['type'])
+			AND isset($file['tmp_name'])
+			AND isset($file['size']));
+	}
+
+	/**
+	 * Tests if input data has valid upload data.
+	 *
+	 * @param   array    $_FILES item
+	 * @return  bool
+	 */
+	public static function required(array $file)
+	{
+		return (isset($file['tmp_name'])
+			AND isset($file['error'])
+			AND is_uploaded_file($file['tmp_name'])
+			AND (int) $file['error'] === UPLOAD_ERR_OK);
+	}
+
+	/**
+	 * Validation rule to test if an uploaded file is allowed by extension.
+	 *
+	 * @param   array    $_FILES item
+	 * @param   array    allowed file extensions
+	 * @return  bool
+	 */
+	public static function type(array $file, array $allowed_types)
+	{
+		if ((int) $file['error'] !== UPLOAD_ERR_OK)
+			return TRUE;
+
+		// Get the default extension of the file
+		$extension = strtolower(substr(strrchr($file['name'], '.'), 1));
+
+		// Get the mime types for the extension
+		$mime_types = Kohana::config('mimes.'.$extension);
+
+		// Make sure there is an extension, that the extension is allowed, and that mime types exist
+		return ( ! empty($extension) AND in_array($extension, $allowed_types) AND is_array($mime_types));
+	}
+
+	/**
+	 * Validation rule to test if an uploaded file is allowed by file size.
+	 * File sizes are defined as: SB, where S is the size (1, 15, 300, etc) and
+	 * B is the byte modifier: (B)ytes, (K)ilobytes, (M)egabytes, (G)igabytes.
+	 * Eg: to limit the size to 1MB or less, you would use "1M".
+	 *
+	 * @param   array    $_FILES item
+	 * @param   array    maximum file size
+	 * @return  bool
+	 */
+	public static function size(array $file, array $size)
+	{
+		if ((int) $file['error'] !== UPLOAD_ERR_OK)
+			return TRUE;
+
+		// Only one size is allowed
+		$size = strtoupper($size[0]);
+
+		if ( ! preg_match('/[0-9]++[BKMG]/', $size))
+			return FALSE;
+
+		// Make the size into a power of 1024
+		switch (substr($size, -1))
+		{
+			case 'G': $size = intval($size) * pow(1024, 3); break;
+			case 'M': $size = intval($size) * pow(1024, 2); break;
+			case 'K': $size = intval($size) * pow(1024, 1); break;
+			default:  $size = intval($size);                break;
+		}
+
+		// Test that the file is under or equal to the max size
+		return ($file['size'] <= $size);
+	}
+
+} // End upload
\ No newline at end of file
-- 
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