lib/AOOSModelConstraints.php

   1 <?php
   2 require_once("AOOSInterfaces.php");
   3
   4 class LengthConstraint implements AOOSModelConstraintInterface {
   5     static public function name() {
   6         return "Length";
   7     }
   8
   9     static public function numArgs() {
  10         return 1;
  11     }
  12
  13     static public function check($args, $value) {
  14         if (is_integer($value) || is_object($value) || is_float($value) || is_bool($value)) {
  15             return false;
  16         }
  17         return true;
  18     }
  19
  20     static public function execute($args, $value) {
  21         $length = $args[0];
  22         if (is_string($value)) {
  23             if (strlen($value) > $length) {
  24                 return substr($value, 0, $length);
  25             }
  26             else {
  27                 return $value;
  28             }
  29         }
  30         elseif (is_array($value)) {
  31             if (count($value) > $length) {
  32                 return array_slice($value, 0, $length);
  33             }
  34             else {
  35                 return $value;
  36             }
  37         }
  38         return false;
  39     }
  40 }
  41
  42 class MatchConstraint implements AOOSModelConstraintInterface {
  43     static public function name() {
  44         return "Match";
  45     }
  46
  47     static public function numArgs() {
  48         return 1;
  49     }
  50
  51     static public function check($args, $value) {
  52         if (!is_string($value)) {
  53             return false;
  54         }
  55         return true;
  56     }
  57
  58     static public function execute($args, $value) {
  59         $pattern = $args[0];
  60         if (preg_match($pattern, $value)) {
  61             return $value;
  62         }
  63         return false;
  64     }
  65 }
  66
  67 class RangeConstraint implements AOOSModelConstraintInterface {
  68     static public function name() {
  69         return "Range";
  70     }
  71
  72     static public function numArgs() {
  73         return 2;
  74     }
  75
  76     static public function check($args, $value) {
  77         $start = $args[0];
  78         $end = $args[1];
  79         if (!is_integer($value) && !is_float($value)) {
  80             return false;
  81         }
  82         if (!(is_integer($start) || is_float($start) || is_integer($end) || is_float($end)) || $start > $end) {
  83             return false;
  84         }
  85         return true;
  86     }
  87
  88     static public function execute($args, $value) {
  89         $start = $args[0];
  90         $end = $args[1];
  91         if ($value < $start) {
  92             $value = $start;
  93         }
  94         elseif ($value > $end) {
  95             $value = $end;
  96         }
  97         return $value;
  98     }
  99 }
 100 ?>