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   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 $this;
  24      }
  25  
  26      public function assertIsBool() {
  27          if (!is_bool($this->contents)) $this->error('must be a boolean');
  28          return $this;
  29      }
  30  
  31      public function assertIsArray() {
  32          if (!is_array($this->contents)) $this->error('must be an array');
  33          return $this;
  34      }
  35  
  36      public function assertNotNull() {
  37          if ($this->contents === null) $this->error('must not be null');
  38          return $this;
  39      }
  40  
  41      public function assertAlnum() {
  42          $this->assertIsString();
  43          if (!ctype_alnum($this->contents)) $this->error('must be alphanumeric');
  44          return $this;
  45      }
  46  
  47      public function assertNotEmpty() {
  48          if (empty($this->contents)) $this->error('must not be empty');
  49          return $this;
  50      }
  51  
  52      public function assertIsLookup() {
  53          $this->assertIsArray();
  54          foreach ($this->contents as $v) {
  55              if ($v !== true) $this->error('must be a lookup array');
  56          }
  57          return $this;
  58      }
  59  
  60      protected function error($msg) {
  61          throw new HTMLPurifier_ConfigSchema_Exception(ucfirst($this->member) . ' in ' . $this->context . ' ' . $msg);
  62      }
  63  
  64  }
  65  
  66  // vim: et sw=4 sts=4