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Root/src/Pluf/Encoder.php

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<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */
 
/**
 * Validators are functions used to validate user/program input.
 *
 * A validator signature is:
 * my_validator($field_data, $params=array())
 * with $params an associative array of parameters.
 *
 *
 * A validator must fail on an empty string by raising an
 * Pluf_Form_Invalid Exception or return the data in the right format
 * (string, bool, whatever).
 *
 * FIXME: Escape the strings when bad strings are sent in the error message.
 */
class Pluf_Encoder
{
    /**
     * Store the complete form data if validation is coming from a form.
     */
    protected $form = array();
 
    /**
     * Set the form data.
     *
     * @param &array Reference to the form data
     */
    function setFormData(&$form)
    {
        $this->form = $form;
    }
 
    /**
     * Check if could be empty or not.
     */
    function checkEmpty($data, $form=array(), $p=array())
    {
        if (strlen($data) == 0
            and isset($p['blank']) and false == $p['blank']) {
            throw new Pluf_Form_Invalid(__('The value must not be empty.'));
        }
        return true;
    }
 
 
    /**
     * Validate an url.
     * Only the structure is checked, no check of availability of the
     * url is performed. It is a really basic validation.
     */
    static function url($url, $form=array(), $p=array())
    {
        $ip = '(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.'
            .'(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}';
        $dom = '([a-z0-9\.\-]+)';
        if (preg_match('!^(http|https|ftp|gopher)\://('.$ip.'|'.$dom.')!i', $url)) {
            return $url;
        } else {
            throw new Pluf_Form_Invalid(sprintf(__('The URL <em>%s</em> is not valid.'), htmlspecialchars($url)));
        }
    }
 
    static function varchar($string, $form=array(), $p=array())
    {
        if (isset($p['size']) && strlen($string) > $p['size']) {
            throw new Pluf_Form_Invalid(sprintf(__('The value should not be more than <em>%s</em> characters long.'), $p['size']));
        }
        return $string;
    }
 
    static function password($string, $form=array(), $p=array())
    {
        if (strlen($string) < 6) {
            throw new Pluf_Form_Invalid(sprintf(__('The password must be at least <em>%s</em> characters long.'), '6'));
        }
        return $string;
    }
 
    static function email($string, $form=array(), $p=array())
    {
        if (preg_match('/^[A-Z0-9._%-][+A-Z0-9._%-]*@(?:[A-Z0-9-]+\.)+[A-Z]{2,4}$/i', $string)) {
            return $string;
        } else {
            throw new Pluf_Form_Invalid(sprintf(__('The email address "%s" is not valid.'),
                                      $string));
        }
    }
 
    static function text($string, $form=array(), $p=array())
    {
        return Pluf_Encoder::varchar($string, $form, $p);
    }
 
 
    static function sequence($id, $form=array(), $p=array())
    {
        return Pluf_Encoder::integer($id, $p);
    }
 
    static function boolean($bool, $form=array(), $p=array())
    {
        if (in_array($bool, array('on', 'y', '1', 1, true))) {
            return true;
        }
        return false;
    }
 
    static function foreignkey($id, $form=array(), $p=array())
    {
        return Pluf_Encoder::integer($id, $p);
    }
 
    static function integer($int, $form=array(), $p=array())
    {
        if (!preg_match('/[0-9]+/', $int)) {
            throw new Pluf_Form_Invalid(__('The value must be an integer.'));
        }
        return (int) $int;
    }
 
    static function datetime($datetime, $form=array(), $p=array())
    {
        if (false === ($stamp = strtotime($datetime))) {
            throw new Pluf_Form_Invalid(sprintf(__('The date and time <em>%s</em> are not valid.'), htmlspecialchars($datetime)));
        }
        //convert to GMT
        return gmdate('Y-m-d H:i:s', $stamp);
    }
     
    static function date($date, $form=array(), $p=array())
    {
        $ymd = explode('-', $date);
        if (count($ymd) != 3  or strlen($ymd[0]) != 4
            or false === checkdate($ymd[1], $ymd[2], $ymd[0])) {
            throw new Pluf_Form_Invalid(sprintf(__('The date <em>%s</em> is not valid.'), htmlspecialchars($date)));
        }
        return $date;
    }
 
    static function manytomany($vals, $form=array(), $p=array())
    {
        $res = array();
        foreach ($vals as $val) {
            $res[] = Pluf_Encoder::integer($val);
        }
        return $res;
    }
 
    static function float($val, $form=array(), $p=array())
    {
        return (float) $val;
    }
 
    /*
                             'file' => "''",
                             'manytomany' => null,
                             'foreignkey' => 0,
                             'text' => "''",
                             'html' => "''",
                             'time' => 0,
                             'integer' => 0,
                             );
    */
}

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