1: <?php
 2: 
 3: /*
 4:  * To change this license header, choose License Headers in Project Properties.
 5:  * To change this template file, choose Tools | Templates
 6:  * and open the template in the editor.
 7:  */
 8: 
 9: namespace academicpuma\citeproc;
10: 
11: /**
12:  * Description of csl_label
13:  *
14:  * @author sebastian
15:  */
16: 
17: class Label extends Format {
18: 
19:     private $plural;
20: 
21:     function render($data, $mode = NULL) {
22:         $text = '';
23: 
24:         $variables = explode(' ', $this->variable);
25:         $form = (($form = $this->form)) ? $form : 'long';
26:         switch ($this->plural) {
27:             case 'never':
28:                 $plural = 'single';
29:                 break;
30:             case 'always':
31:                 $plural = 'multiple';
32:                 break;
33:             case 'contextual':
34:             default:
35:         }
36:         foreach ($variables as $variable) {
37:             if (isset($data->{$variable})) {
38:                 if (!isset($this->plural) && empty($plural) && is_array($data->{$variable})) {
39:                     $count = count($data->{$variable});
40:                     if ($count == 1) {
41:                         $plural = 'single';
42:                     } elseif ($count > 1) {
43:                         $plural = 'multiple';
44:                     }
45:                 } else {
46:                     $plural = $this->evaluateStringPluralism($data, $variable);
47:                 }
48:                 if (!empty($data->{$variable}) && ($term = $this->citeproc->get_locale('term', $variable, $form, $plural))) {
49:                     $text = $term;
50:                     break;
51:                 }
52:             }
53:         }
54: 
55:         if (empty($text))
56:             return;
57:         if ($this->{'strip-periods'})
58:             $text = str_replace('.', '', $text);
59:         return $this->format($text);
60:     }
61: 
62:     function evaluateStringPluralism($data, $variable) {
63:         $str = $data->{$variable};
64:         $plural = 'single';
65: 
66:         if (!empty($str)) {
67: //      $regex = '/(?:[0-9],\s*[0-9]|\s+and\s+|&|([0-9]+)\s*[\-\x2013]\s*([0-9]+))/';
68:             switch ($variable) {
69:                 case 'page':
70:                     $page_regex = "/([a-zA-Z]*)([0-9]+)\s*(?:–|-)\s*([a-zA-Z]*)([0-9]+)/";
71:                     $err = preg_match($page_regex, $str, $m);
72:                     if ($err !== FALSE && count($m) == 0) {
73:                         $plural = 'single';
74:                     } elseif ($err !== FALSE && count($m)) {
75:                         $plural = 'multiple';
76:                     }
77:                     break;
78:                 default:
79:             }
80:         }
81:         return $plural;
82:     }
83: 
84: }
85: