library/HTMLPurifier/ConfigSchema/Validator.php

   1 <?php
   2
   3 /**
   4  * Performs validations on HTMLPurifier_ConfigSchema_Interchange
   5  */
   6 class HTMLPurifier_ConfigSchema_Validator
   7 {
   8
   9     protected $interchange;
  10
  11     /**
  12      * Volatile context variables to provide a fluent interface.
  13      */
  14     protected $context, $obj, $member;
  15
  16     /**
  17      * Validates a fully-formed interchange object. Throws an
  18      * HTMLPurifier_ConfigSchema_Exception if there's a problem.
  19      */
  20     public function validate($interchange) {
  21         $this->interchange = $interchange;
  22         foreach ($interchange->namespaces as $namespace) {
  23             $this->validateNamespace($namespace);
  24         }
  25         foreach ($interchange->directives as $directive) {
  26             $this->validateDirective($directive);
  27         }
  28     }
  29
  30     public function validateNamespace($n) {
  31         $this->context = "namespace '{$n->namespace}'";
  32         $this->with($n, 'namespace')
  33             ->assertNotEmpty()
  34             ->assertAlnum();
  35         $this->with($n, 'description')
  36             ->assertIsString()
  37             ->assertNotEmpty();
  38     }
  39
  40     public function validateDirective($d) {
  41         $this->context = "directive '{$d->id}'";
  42         $this->validateId($d->id);
  43     }
  44
  45     public function validateId($id) {
  46         $this->context = "id '$id'";
  47         $this->with($id, 'namespace')
  48             ->assertNotEmpty()
  49             ->assertAlnum();
  50         $this->with($id, 'directive')
  51             ->assertNotEmpty()
  52             ->assertAlnum();
  53     }
  54
  55     // protected helper functions
  56
  57     protected function with($obj, $member) {
  58         return new HTMLPurifier_ConfigSchema_ValidatorAtom($this->context, $obj, $member);
  59     }
  60
  61     protected function error($msg) {
  62         throw new HTMLPurifier_ConfigSchema_Exception($msg . ' in ' . $this->context);
  63     }
  64
  65 }