Adding uploadError() and mimeType() to the Validation class

lib/Cake/Test/Case/Utility/ValidationTest.php

@@ -2166,4 +2166,30 @@ public function testDatetime() {
 		$this->assertFalse(Validation::datetime('31 11 2006 1:00pm', 'dmy'));
 	}
 
+/**
+ * testMimeType method
+ *
+ * @return void
+ */
+	public function testMimeType() {
+		$file = CORE_PATH . 'Cake' . DS . 'Test' . DS . 'test_app' . DS . 'webroot' . DS . 'img' . DS . 'cake.power.gif';
+		$this->assertTrue(Validation::mimeType($file, array('image/gif')));
+		$this->assertTrue(Validation::mimeType(array('tmp_name' => $file), array('image/gif')));
+
+		$this->assertFalse(Validation::mimeType($file, array('image/png')));
+		$this->assertFalse(Validation::mimeType(array('tmp_name' => $file), array('image/png')));
+	}
+
+/**
+ * testMimeType method
+ *
+ * @return void
+ */
+	public function testUploadError() {
+		$this->assertTrue(Validation::uploadError(0));
+		$this->assertTrue(Validation::uploadError(array('error' => 0)));
+
+		$this->assertFalse(Validation::uploadError(2));
+		$this->assertFalse(Validation::uploadError(array('error' => 2)));
+	}
 }

lib/Cake/Utility/Validation.php

@@ -18,6 +18,7 @@
  */
 
 App::uses('Multibyte', 'I18n');
+App::uses('File', 'Utility');
 // Load multibyte if the extension is missing.
 if (!function_exists('mb_strlen')) {
 	class_exists('Multibyte');
@@ -858,6 +859,39 @@ public static function luhn($check, $deep = false) {
 		return ($sum % 10 == 0);
 	}
 
+/**
+ * Checks the mime type of a file
+ *
+ * @param string|array $check
+ * @param array $mimeTypes to check for
+ * @return boolean Success
+ */
+	public static function mimeType($check, $mimeTypes = array()) {
+		if (is_array($check) && isset($check['tmp_name'])) {
+			$check = $check['tmp_name'];
+		}
+
+		$File = new File($check);
+		$info = $File->info();
+
+		return in_array($info['mime'], $mimeTypes);
+	}
+
+/**
+ * Checking for upload errors
+ *
+ * @param string|array $check
+ * @retrun boolean
+ * @see http://www.php.net/manual/en/features.file-upload.errors.php
+ */
+	public static function uploadError($check) {
+		if (is_array($check) && isset($check['error'])) {
+			$check = $check['error'];
+		}
+
+		return $check === UPLOAD_ERR_OK;
+	}
+
 /**
  * Lazily populate the IP address patterns used for validations
  *