*
					 * @since      2.2.0
					 * @deprecated 2.5.0 use {@see Bulk_Upgrader_Skin::flush_output()} instead
					 * @see        Bulk_Upgrader_Skin::flush_output()
					 */
					public function after_flush_output() {
						_deprecated_function( __FUNCTION__, 'TGMPA 2.5.0', 'Bulk_Upgrader_Skin::flush_output()' );
						$this->flush_output();
						$this->i++;
					}
				}
			}
		}
	}
}

if ( ! class_exists( 'TGMPA_Utils' ) ) {

	/**
	 * Generic utilities for TGMPA.
	 *
	 * All methods are static, poor-dev name-spacing class wrapper.
	 *
	 * Class was called TGM_Utils in 2.5.0 but renamed TGMPA_Utils in 2.5.1 as this was conflicting with Soliloquy.
	 *
	 * @since 2.5.0
	 *
	 * @package TGM-Plugin-Activation
	 * @author  Juliette Reinders Folmer
	 */
	class TGMPA_Utils {
		/**
		 * Whether the PHP filter extension is enabled.
		 *
		 * @see http://php.net/book.filter
		 *
		 * @since 2.5.0
		 *
		 * @static
		 *
		 * @var bool $has_filters True is the extension is enabled.
		 */
		public static $has_filters;

		/**
		 * Wrap an arbitrary string in <em> tags. Meant to be used in combination with array_map().
		 *
		 * @since 2.5.0
		 *
		 * @static
		 *
		 * @param string $string Text to be wrapped.
		 * @return string
		 */
		public static function wrap_in_em( $string ) {
			return '<em>' . wp_kses_post( $string ) . '</em>';
		}

		/**
		 * Wrap an arbitrary string in <strong> tags. Meant to be used in combination with array_map().
		 *
		 * @since 2.5.0
		 *
		 * @static
		 *
		 * @param string $string Text to be wrapped.
		 * @return string
		 */
		public static function wrap_in_strong( $string ) {
			return '<strong>' . wp_kses_post( $string ) . '</strong>';
		}

		/**
		 * Helper function: Validate a value as boolean
		 *
		 * @since 2.5.0
		 *
		 * @static
		 *
		 * @param mixed $value Arbitrary value.
		 * @return bool
		 */
		public static function validate_bool( $value ) {
			if ( ! isset( self::$has_filters ) ) {
				self::$has_filters = extension_loaded( 'filter' );
			}

			if ( self::$has_filters ) {
				return filter_var( $value, FILTER_VALIDATE_BOOLEAN );
			} else {
				return self::emulate_filter_bool( $value );
			}
		}

		/**
		 * Helper function: Cast a value to bool
		 *
		 * @since 2.5.0
		 *
		 * @static
		 *
		 * @param mixed $value Value to cast.
		 * @return bool
		 */
		protected static function emulate_filter_bool( $value ) {
			// @codingStandardsIgnoreStart
			static $true  = array(
				'1',
				'true', 'True', 'TRUE',
				'y', 'Y',
				'yes', 'Yes', 'YES',
				'on', 'On', 'ON',
			);
			static $false = array(
				'0',
				'false', 'False', 'FALSE',
				'n', 'N',
				'no', 'No', 'NO',
				'off', 'Off', 'OFF',
			);
			// @codingStandardsIgnoreEnd

			if ( is_bool( $value ) ) {
				return $value;
			} elseif ( is_int( $value ) && ( 0 === $value || 1 === $value ) ) {
				return (bool) $value;
			} elseif ( ( is_float( $value ) && ! is_nan( $value ) ) && ( (float) 0 === $value || (float) 1 === $value ) ) {
				return (bool) $value;
			} elseif ( is_string( $value ) ) {
				$value = trim( $value );
				if ( in_array( $value, $true, true ) ) {
					return true;
				} elseif ( in_array( $value, $false, true ) ) {
					return false;
				} else {
					return false;
				}
			}

			return false;
		}
	} // End of class TGMPA_Utils
} // End of class_exists wrapper