ILIAS  release_5-1 Revision 5.0.0-5477-g43f3e3fab5f
RemoveEmpty.php
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1<?php
2
4{
8 private $context;
9
13 private $config;
14
19
23 private $removeNbsp;
24
29
34 private $exclude;
35
41 public function prepare($config, $context)
42 {
43 parent::prepare($config, $context);
44 $this->config = $config;
45 $this->context = $context;
46 $this->removeNbsp = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp');
47 $this->removeNbspExceptions = $config->get('AutoFormat.RemoveEmpty.RemoveNbsp.Exceptions');
48 $this->exclude = $config->get('AutoFormat.RemoveEmpty.Predicate');
49 $this->attrValidator = new HTMLPurifier_AttrValidator();
50 }
51
55 public function handleElement(&$token)
56 {
57 if (!$token instanceof HTMLPurifier_Token_Start) {
58 return;
59 }
60 $next = false;
61 $deleted = 1; // the current tag
62 for ($i = count($this->inputZipper->back) - 1; $i >= 0; $i--, $deleted++) {
63 $next = $this->inputZipper->back[$i];
64 if ($next instanceof HTMLPurifier_Token_Text) {
65 if ($next->is_whitespace) {
66 continue;
67 }
68 if ($this->removeNbsp && !isset($this->removeNbspExceptions[$token->name])) {
69 $plain = str_replace("\xC2\xA0", "", $next->data);
70 $isWsOrNbsp = $plain === '' || ctype_space($plain);
71 if ($isWsOrNbsp) {
72 continue;
73 }
74 }
75 }
76 break;
77 }
78 if (!$next || ($next instanceof HTMLPurifier_Token_End && $next->name == $token->name)) {
79 $this->attrValidator->validateToken($token, $this->config, $this->context);
80 $token->armor['ValidateAttributes'] = true;
81 if (isset($this->exclude[$token->name])) {
82 $r = true;
83 foreach ($this->exclude[$token->name] as $elem) {
84 if (!isset($token->attr[$elem])) $r = false;
85 }
86 if ($r) return;
87 }
88 if (isset($token->attr['id']) || isset($token->attr['name'])) {
89 return;
90 }
91 $token = $deleted + 1;
92 for ($b = 0, $c = count($this->inputZipper->front); $b < $c; $b++) {
93 $prev = $this->inputZipper->front[$b];
94 if ($prev instanceof HTMLPurifier_Token_Text && $prev->is_whitespace) {
95 continue;
96 }
97 break;
98 }
99 // This is safe because we removed the token that triggered this.
100 $this->rewindOffset($b+$deleted);
101 return;
102 }
103 }
104}
105
106// vim: et sw=4 sts=4
Validates the attributes of a token.
$exclude
Cached contents of AutoFormat.RemoveEmpty.Predicate @type array.
Definition: RemoveEmpty.php:34
$attrValidator
@type HTMLPurifier_AttrValidator
Definition: RemoveEmpty.php:18
$config
@type HTMLPurifier_Config
Definition: RemoveEmpty.php:13
$context
@type HTMLPurifier_Context
Definition: RemoveEmpty.php:8
Injects tokens into the document while parsing for well-formedness.
Definition: Injector.php:17
rewindOffset($offset)
Rewind to a spot to re-perform processing.
Definition: Injector.php:72
Concrete end token class.
Definition: End.php:11
Concrete start token class.
Definition: Start.php:7
Concrete text token class.
Definition: Text.php:13
$r
Definition: example_031.php:79