1: <?php
 2: 
 3: 
 4: 
 5: /**
 6: *  Class Parser
 7: * 
 8: *  @version 1.0.0
 9: *  @author v.raskin
10:  * @package vsword.parser
11: */
12: abstract class Parser {
13:     /**
14:     * @var IInitNode[]
15:     */
16:     protected $handlersInitNode = array();  
17:     
18:     /**
19:     * Add a handler to the top of the list.
20:     * @param IInitNode $handler
21:     */
22:     public function addHandlerInitNode(IInitNode $handler) { 
23:         array_unshift($this->handlersInitNode, $handler);
24:     }
25:     
26:     /**
27:     * @param string $tagName
28:     * @param string $attributes
29:     * @return Node
30:     */
31:     public function initNode($tagName, $attributes = NULL) {
32:         if(sizeof($this->handlersInitNode)) {  
33:             $attributes = is_array($attributes) ? $attributes : $this->attributeStrToArray($attributes); 
34:             foreach($this->handlersInitNode as $handler) { 
35:                 if(!is_null($node = $handler->initNode($tagName, $attributes))) {
36:                     return $node;
37:                 }
38:             }
39:         }
40:         return new EmptyCompositeNode(); 
41:     }
42:     
43:     /**
44:     * @param string $attributeStr
45:     * @return array
46:     */
47:     protected function attributeStrToArray($attributeStr) { 
48:         $attr = array();
49:         $attributeStr = trim($attributeStr);
50:         $l = strlen($attributeStr);
51:         $key = '';
52:         $value = '';
53:         $state = 0;
54:         for($i = 0;  $i < $l; $i ++) {
55:             $char = substr($attributeStr, $i, 1);
56:             if($state == 0 && $char == '=') {
57:                 $state = 1;
58:             } else if($state == 1 && $char == '"') {
59:                 $state = 2;
60:             } else if($state == 1 && $char == '\'') {
61:                 $state = 3;
62:             } else if(($state == 3 && $char == '\'') || ($state == 2 && $char == '"')) {
63:                 $attr[trim($key)] = $value; 
64:                 $key = '';
65:                 $value = '';
66:                 $state = 0;
67:             } else if($state == 2 || $state == 3) {
68:                 $value .= $char;
69:             } else if($state == 0) {
70:                 $key .= $char;
71:             } 
72:         }
73:         if($state != 0) {
74:             throw new Exception('Attribute syntax error');
75:         }
76:         return $attr;
77:     }
78: }