lancew/DojoList

<?php
/**
 * DojoList Data Model file
 *
 * This model abstracts data access away from the dojo model.
 *
 * PHP version 5
 *
 * LICENSE: please see the AGPL license file is data/agpl-3.0.txt
 *
 * @category  DataModel
 * @package   DojoList
 * @author    Lance Wicks <lw@judocoach.com>
 * @copyright 2010 Lance Wicks
 * @license   http://www.gnu.org/licenses/agpl.html  AGPL License 3.0
 * @link      http://github.com/lancew/DojoList
 */

/**
 * Load_Xml_data function.
 * 
 * @access public
 * @param  string $file. (default: 'data/dojo.xml')
 * 
 * @return void
 */
function Load_Xml_data($file = 'data/dojo.xml')
{

    if (file_exists($file)) {
        $xml = simplexml_load_file($file);
    } else {
        return 'Failed to load XML';
    }
    return $xml;
}


/**
 * Save_Xml_data function.
 *
 * @access public
 * @param  mixed  $xml
 * @param  string $file. (default: 'data/dojo.xml')
 *
 * @return void
 */
function Save_Xml_data($xml, $file = 'data/dojo.xml')
{
    Backup_data();
    $fh = fopen($file, 'w') or die("can't open file");
    fwrite($fh, $xml);
    fclose($fh);
    return $file;
}


/**
 * get_string_between function.
 *
 * @access public
 * @param  mixed $string
 * @param  mixed $start
 * @param  mixed $end
 * @return void
 */
function Get_string_between($string, $start, $end)
{
    $string = " ".$string;
    $ini = strpos($string, $start);
    if ($ini == 0) { return "";
    }
    $ini += strlen($start);
    $len = strpos($string, $end, $ini) - $ini;
    return substr($string, $ini, $len);
}

/**
 * guid function.
 *
 * @access public
 * @return guid
 */
function guid()
{
    if (function_exists('com_create_guid')) {
        return com_create_guid();
    } else {
        mt_srand((double)microtime()*10000);//optional for php 4.2.0 and up.
        $charid = strtoupper(md5(uniqid(rand(), true)));
        $hyphen = chr(45);// "-"
        $uuid = chr(123)// "{"
        .substr($charid, 0, 8).$hyphen
         .substr($charid, 8, 4).$hyphen
         .substr($charid, 12, 4).$hyphen
         .substr($charid, 16, 4).$hyphen
         .substr($charid, 20, 12)
         .chr(125);// "}"
        return $uuid;
    }
}

/**
 * validate_field function.
 *
 * This function checks individual fields and returns the number of errors found, preferably 0.
 *
 * @access public
 * @param  mixed $data
 * @param  mixed $type
 * @return INT 0 or 1
 */
function Validate_field($data, $type)
{
    // This function checks fields and returns the number of errors found.
    // Check if the parameters have been sent.
    //if(!$data or !$type) { return 1;}
    /*
    [DojoName] => Lancew"
    [MembershipID] =>
    [CoachName] =>
    [DojoAddress] =>
    [ContactName] =>
    [ContactPhone] =>
    [ContactEmail] =>
    [ClubWebsite] =>
    [MAX_FILE_SIZE] => 20000
    [Latitude] =>
    [Longitude] =>
    [GUID] => {F6E3B62D-EE41-7213-D7DF-EFFFB9139F16}
    */

    //echo $type.':'.$data.'<br>';
    switch ($type) {
    case "DojoName":
        if (preg_match('/[^A-Za-z -]/', $data)) {   
            return 'Dojo Name: Must be alphanumeric only';
        }
        return null;
    case "MembershipID":
        if (preg_match('/[^0-9]/', $data)) {
            return 'Membership ID: Must be numbers only';
        }
        break;
    case "CoachName":
        if (preg_match('/[^A-Za-z ]/', $data)) {
            return 'Coach Name: Must be letters a-z or A-Z only';
        }
        return null;
    case "DojoAddress":
        if (preg_match('/[^A-Za-z0-9,. ]/', $data)) {
            return 'Dojo Address: Must be alphanumeric or a comma, or fullstop only';
        }
        return null;
    case "ContactName":
        if (preg_match('/[^A-Za-z ]/', $data)) {
            return 'Contact Name: Must be letters a-z or A-Z only';
        }
        return null;
    case "ContactPhone":
        if (preg_match('/[^0-9() ]/', $data)) {
            return 'Contact telephone number: Must be numbers 0-9 only';
        }
        return null;
        


    default:
        return null;


    }


}

/**
 * Validate_create function.
 *
 * This function is used to check all fields in the create form.
 * returns the number of errors, hopefully it should be 0
 *
 * @access public
 * @param  mixed $_POST. (default: null)
 * @return void
 */
function Validate_form($post = null)
{
    // echo '<pre>';
    // print_r($_POST);
    // echo '</pre>';
    
    //create the error array
    $aErrors = null;
    
    
    // Cycle through all variables. If no dojoname then fail
    // else use the validate_field function
    foreach ($post as $field => $value) {

        if ($field==="DojoName") {
            if (!$value) {
                $aErrors[] = 'Dojo name not present';
                

            }
        }
        if ($value) {
            $result = Validate_field($value, $field);
            //  echo  $field.": ".$result;
            $aErrors[] = $result;
            //  echo "COUNT: $error_count<br>";
        }


    }
    // return an array of validation errors
    //print_r($aErrors);
    $ret = null;
    foreach($aErrors as $error){
        if($error) {
            $ret = 1;
        }
    }
    if($ret != null) {
          return $aErrors;
    } else {
          return null;
    }
    
}

function Backup_data()
{
    // Backup the XML file in case we mess things up.
    // Five versions.
    
    for ($i = 4; $i >= 1; $i--) 
    {
        //echo $i;
        $filename = 'data/dojo_'.$i.'.xml';
        $newfile = 'data/dojo_'.($i+1).'.xml';
        if (file_exists($filename))
        //echo $filename;
        {
            //echo '.';
            copy($filename, $newfile);
        }

    }
    copy('data/dojo.xml', 'data/dojo_1.xml');
}


?>