1: <?php
 2: 
 3: namespace GeoIp2\Record;
 4: 
 5: abstract class AbstractRecord implements \JsonSerializable
 6: {
 7:     private $record;
 8: 
 9:     /**
10:      * @ignore
11:      *
12:      * @param mixed $record
13:      */
14:     public function __construct($record)
15:     {
16:         $this->record = isset($record) ? $record : [];
17:     }
18: 
19:     /**
20:      * @ignore
21:      *
22:      * @param mixed $attr
23:      */
24:     public function __get($attr)
25:     {
26:         // XXX - kind of ugly but greatly reduces boilerplate code
27:         $key = $this->attributeToKey($attr);
28: 
29:         if ($this->__isset($attr)) {
30:             return $this->record[$key];
31:         } elseif ($this->validAttribute($attr)) {
32:             if (preg_match('/^is_/', $key)) {
33:                 return false;
34:             }
35: 
36:             return null;
37:         }
38:         throw new \RuntimeException("Unknown attribute: $attr");
39:     }
40: 
41:     public function __isset($attr)
42:     {
43:         return $this->validAttribute($attr) &&
44:              isset($this->record[$this->attributeToKey($attr)]);
45:     }
46: 
47:     private function attributeToKey($attr)
48:     {
49:         return strtolower(preg_replace('/([A-Z])/', '_\1', $attr));
50:     }
51: 
52:     private function validAttribute($attr)
53:     {
54:         return in_array($attr, $this->validAttributes, true);
55:     }
56: 
57:     public function jsonSerialize()
58:     {
59:         return $this->record;
60:     }
61: }
62: