library/HTMLPurifier/ConfigSchema/ValidatorAtom.php

   1 <?php
   2
   3 /**
   4  * Fluent interface for validating the contents of member variables.
   5  * This should be immutable. See HTMLPurifier_ConfigSchema_Validator for
   6  * use-cases. We name this an 'atom' because it's ONLY for validations that
   7  * are independent and usually scalar.
   8  */
   9 class HTMLPurifier_ConfigSchema_ValidatorAtom
  10 {
  11
  12     protected $context, $obj, $member, $contents;
  13
  14     public function __construct($context, $obj, $member) {
  15         $this->context     = $context;
  16         $this->obj         = $obj;
  17         $this->member      = $member;
  18         $this->contents    =& $obj->$member;
  19     }
  20
  21     public function assertIsString() {
  22         if (!is_string($this->contents)) $this->error('must be a string');
  23         return $this;
  24     }
  25
  26     public function assertNotNull() {
  27         if ($this->contents === null) $this->error('must not be null');
  28         return $this;
  29     }
  30
  31     public function assertAlnum() {
  32         $this->assertIsString();
  33         if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
  34         return $this;
  35     }
  36
  37     public function assertNotEmpty() {
  38         if (empty($this->contents)) $this->error('must not be empty');
  39         return $this;
  40     }
  41
  42     protected function error($msg) {
  43         throw new HTMLPurifier_ConfigSchema_Exception('Member variable \'' . $this->member . '\' in ' . $this->context . ' ' . $msg);
  44     }
  45
  46 }
  47
  48