jacobemerick/web

<?php

Loader::load('utility', 'Request');

class Validate
{

    private static $NAME_REGEX = '@[a-z\s\'-]+@i';
    private static $EMAIL_REGEX = '@(?:[a-z0-9!#$%&\'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&\'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")\@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])@i';
    private static $URL_REGEX = '@((https?|ftp)\:\/\/)?([a-z0-9-.]*)\.([a-z]{2,3})(\/([a-z0-9+\$_-]\.?)+)*\/?(\?[a-z+&\$_.-][a-z0-9;:\@&%=+\/\$_.-]*)?(#[a-z_.-][a-z0-9+\$_.-]*)?@i';

    public static function isBoolean($value, $strict = false)
    {
        if($strict && ($value === true || $value === false))
            return true;
        if(!$strict && ((bool) $value === true || (bool) $value === false))
            return true;
        return false;
    }

    public static function isDate($value)
    {
        if(strtotime($value) !== -1)
            return true;
        if(date('y', $value) !== false)
            return true;
        return false;
    }

    public static function isInteger($value, $strict = false)
    {
        if($strict)
            return is_int($value);
        return (int) $value == $value;
    }

    public static function isIP($value)
    {
        if(self::isInteger(ip2long($value)))
            return true;
        return false;
    }

    public static function isString($value, $strict = false)
    {
        if($strict)
            return is_string($value);
        return (string) $value == $value;
    }

    public static function isURL($value)
    {
        return true;
        return self::check_value(self::$URL_REGEX, $value);
    }

    public static function isName($value)
    {
        return self::check_value(self::$NAME_REGEX, $value);
    }

    public static function isEmail($value)
    {
        return self::check_value(self::$EMAIL_REGEX, $value);
    }

    private static function check_value($pattern, $string)
    {
        preg_match($pattern, $string, $matches);
        if(empty($matches))
            return false;
        return $matches[0] == $string;
    }

    public static function checkRequest($type, $key, $validation, $strict = false)
    {
        switch($type)
        {
            case 'server':
                $value = Request::getServer($key);
            break;
            case 'post':
                $value = Request::getPost($key);
            break;
        }
        
        if($value == false)
            return false;
        
        switch($validation)
        {
            case 'boolean':
                return self::isBoolean($value, $strict);
            case 'date':
                return self::isDate($value);
            case 'integer':
                return self::isInteger($value, $strict);
            case 'ip':
                return self::isIP($value);
            case 'string':
                return self::isString($value, $strict);
            case 'url':
                return self::isURL($value, $strict);
            case 'name':
                return self::isName($value, $strict);
            case 'email':
                return self::isEmail($value, $strict);
        }
        
        return false;
    }

}

?>