1: <?php
 2: 
 3: namespace GeoIp2\Record;
 4: 
 5: use GeoIp2\Compat\JsonSerializable;
 6: 
 7: abstract class AbstractRecord implements JsonSerializable
 8: {
 9:     private $record;
10: 
11:     /**
12:      * @ignore
13:      */
14:     public function __construct($record)
15:     {
16:         $this->record = isset($record) ? $record : array();
17:     }
18: 
19:     /**
20:      * @ignore
21:      */
22:     public function __get($attr)
23:     {
24:         // XXX - kind of ugly but greatly reduces boilerplate code
25:         $key = $this->attributeToKey($attr);
26: 
27:         if ($this->__isset($attr)) {
28:             return $this->record[$key];
29:         } elseif ($this->validAttribute($attr)) {
30:             if (preg_match('/^is_/', $key)) {
31:                 return false;
32:             } else {
33:                 return null;
34:             }
35:         } else {
36:             throw new \RuntimeException("Unknown attribute: $attr");
37:         }
38:     }
39: 
40:     public function __isset($attr)
41:     {
42:         return $this->validAttribute($attr) &&
43:              isset($this->record[$this->attributeToKey($attr)]);
44:     }
45: 
46:     private function attributeToKey($attr)
47:     {
48:         return strtolower(preg_replace('/([A-Z])/', '_\1', $attr));
49:     }
50: 
51:     private function validAttribute($attr)
52:     {
53:         return in_array($attr, $this->validAttributes);
54:     }
55: 
56:     public function jsonSerialize()
57:     {
58:         return $this->record;
59:     }
60: }
61: