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<?php |
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/** |
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* @package s9e\TextFormatter |
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* @copyright Copyright (c) 2010-2017 The s9e Authors |
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* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
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*/ |
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namespace s9e\TextFormatter\Configurator\Helpers; |
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use DOMElement; |
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use DOMXPath; |
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class ElementInspector |
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{ |
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/** |
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* This is an abridged version of the HTML5 content models and rules, with some liberties taken. |
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* |
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* For each element, up to three bitfields are defined: "c", "ac" and "dd". Bitfields are stored |
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* as raw bytes, formatted using the octal notation to keep the sources ASCII. |
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* |
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* "c" represents the categories the element belongs to. The categories are comprised of HTML5 |
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* content models (such as "phrasing content" or "interactive content") plus a few special |
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* categories created to cover the parts of the specs that refer to "a group of X and Y |
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* elements" rather than a specific content model. |
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* |
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* "ac" represents the categories that are allowed as children of given element. |
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* |
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* "dd" represents the categories that must not appear as a descendant of given element. |
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* |
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* Sometimes, HTML5 specifies some restrictions on when an element can accept certain children, |
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* or what categories the element belongs to. For example, an <img> element is only part of the |
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* "interactive content" category if it has a "usemap" attribute. Those restrictions are |
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* expressed as an XPath expression and stored using the concatenation of the key of the bitfield |
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* plus the bit number of the category. For instance, if "interactive content" got assigned to |
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* bit 2, the definition of the <img> element will contain a key "c2" with value "@usemap". |
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* |
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* Additionally, other flags are set: |
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* |
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* "t" indicates that the element uses the "transparent" content model. |
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* "e" indicates that the element uses the "empty" content model. |
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* "v" indicates that the element is a void element. |
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* "nt" indicates that the element does not accept text nodes. (no text) |
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* "to" indicates that the element should only contain text. (text-only) |
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* "fe" indicates that the element is a formatting element. It will automatically be reopened |
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* when closed by an end tag of a different name. |
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* "b" indicates that the element is not phrasing content, which makes it likely to act like |
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* a block element. |
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* |
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* Finally, HTML5 defines "optional end tag" rules, where one element automatically closes its |
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* predecessor. Those are used to generate closeParent rules and are stored in the "cp" key. |
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* |
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* @var array |
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* @see /scripts/patchElementInspector.php |
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*/ |
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protected static $htmlElements = [ |
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'a'=>['c'=>"\17\0\0\0\0\1",'c3'=>'@href','ac'=>"\0",'dd'=>"\10\0\0\0\0\1",'t'=>1,'fe'=>1], |
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'abbr'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'address'=>['c'=>"\3\40",'ac'=>"\1",'dd'=>"\0\45",'b'=>1,'cp'=>['p']], |
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'article'=>['c'=>"\3\4",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'aside'=>['c'=>"\3\4",'ac'=>"\1",'dd'=>"\0\0\0\0\10",'b'=>1,'cp'=>['p']], |
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'audio'=>['c'=>"\57",'c3'=>'@controls','c1'=>'@controls','ac'=>"\0\0\0\104",'ac26'=>'not(@src)','dd'=>"\0\0\0\0\0\2",'dd41'=>'@src','t'=>1], |
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'b'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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'base'=>['c'=>"\20",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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'bdi'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'bdo'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'blockquote'=>['c'=>"\203",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'body'=>['c'=>"\200\0\4",'ac'=>"\1",'dd'=>"\0",'b'=>1], |
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'br'=>['c'=>"\5",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1], |
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'button'=>['c'=>"\117",'ac'=>"\4",'dd'=>"\10"], |
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'canvas'=>['c'=>"\47",'ac'=>"\0",'dd'=>"\0",'t'=>1], |
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'caption'=>['c'=>"\0\2",'ac'=>"\1",'dd'=>"\0\0\0\200",'b'=>1], |
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'cite'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'code'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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'col'=>['c'=>"\0\0\20",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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'colgroup'=>['c'=>"\0\2",'ac'=>"\0\0\20",'ac20'=>'not(@span)','dd'=>"\0",'nt'=>1,'e'=>1,'e?'=>'@span','b'=>1], |
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'data'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'datalist'=>['c'=>"\5",'ac'=>"\4\200\0\10",'dd'=>"\0"], |
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'dd'=>['c'=>"\0\0\200",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['dd','dt']], |
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'del'=>['c'=>"\5",'ac'=>"\0",'dd'=>"\0",'t'=>1], |
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'details'=>['c'=>"\213",'ac'=>"\1\0\0\2",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'dfn'=>['c'=>"\7\0\0\0\40",'ac'=>"\4",'dd'=>"\0\0\0\0\40"], |
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'div'=>['c'=>"\3",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'dl'=>['c'=>"\3",'c1'=>'dt and dd','ac'=>"\0\200\200",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['p']], |
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'dt'=>['c'=>"\0\0\200",'ac'=>"\1",'dd'=>"\0\5\0\40",'b'=>1,'cp'=>['dd','dt']], |
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'em'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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'embed'=>['c'=>"\57",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1], |
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'fieldset'=>['c'=>"\303",'ac'=>"\1\0\0\20",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'figcaption'=>['c'=>"\0\0\0\0\0\4",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'figure'=>['c'=>"\203",'ac'=>"\1\0\0\0\0\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'footer'=>['c'=>"\3\40",'ac'=>"\1",'dd'=>"\0\0\0\0\10",'b'=>1,'cp'=>['p']], |
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'form'=>['c'=>"\3\0\0\0\20",'ac'=>"\1",'dd'=>"\0\0\0\0\20",'b'=>1,'cp'=>['p']], |
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'h1'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'h2'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'h3'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'h4'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'h5'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'h6'=>['c'=>"\3\1",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'head'=>['c'=>"\0\0\4",'ac'=>"\20",'dd'=>"\0",'nt'=>1,'b'=>1], |
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'header'=>['c'=>"\3\40\0\40",'ac'=>"\1",'dd'=>"\0\0\0\0\10",'b'=>1,'cp'=>['p']], |
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'hr'=>['c'=>"\1\100",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1,'cp'=>['p']], |
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'html'=>['c'=>"\0",'ac'=>"\0\0\4",'dd'=>"\0",'nt'=>1,'b'=>1], |
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'i'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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'iframe'=>['c'=>"\57",'ac'=>"\4",'dd'=>"\0"], |
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'img'=>['c'=>"\57\20\10",'c3'=>'@usemap','ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1], |
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'input'=>['c'=>"\17\20",'c3'=>'@type!="hidden"','c12'=>'@type!="hidden" or @type="hidden"','c1'=>'@type!="hidden"','ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1], |
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'ins'=>['c'=>"\7",'ac'=>"\0",'dd'=>"\0",'t'=>1], |
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'kbd'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'keygen'=>['c'=>"\117",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1], |
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'label'=>['c'=>"\17\20\0\0\4",'ac'=>"\4",'dd'=>"\0\0\1\0\4"], |
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'legend'=>['c'=>"\0\0\0\20",'ac'=>"\4",'dd'=>"\0",'b'=>1], |
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'li'=>['c'=>"\0\0\0\0\200",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['li']], |
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'link'=>['c'=>"\20",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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'main'=>['c'=>"\3\0\0\0\10",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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'mark'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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'media element'=>['c'=>"\0\0\0\0\0\2",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'b'=>1], |
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'menu'=>['c'=>"\1\100",'ac'=>"\0\300",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['p']], |
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'menuitem'=>['c'=>"\0\100",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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'meta'=>['c'=>"\20",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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'meter'=>['c'=>"\7\0\1\0\2",'ac'=>"\4",'dd'=>"\0\0\0\0\2"], |
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'nav'=>['c'=>"\3\4",'ac'=>"\1",'dd'=>"\0\0\0\0\10",'b'=>1,'cp'=>['p']], |
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'noscript'=>['c'=>"\25",'ac'=>"\0",'dd'=>"\0",'nt'=>1], |
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'object'=>['c'=>"\147",'ac'=>"\0\0\0\0\1",'dd'=>"\0",'t'=>1], |
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'ol'=>['c'=>"\3",'c1'=>'li','ac'=>"\0\200\0\0\200",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['p']], |
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'optgroup'=>['c'=>"\0\0\2",'ac'=>"\0\200\0\10",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['optgroup','option']], |
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'option'=>['c'=>"\0\0\2\10",'ac'=>"\0",'dd'=>"\0",'b'=>1,'cp'=>['option']], |
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126
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'output'=>['c'=>"\107",'ac'=>"\4",'dd'=>"\0"], |
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'p'=>['c'=>"\3",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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128
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'param'=>['c'=>"\0\0\0\0\1",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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129
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'picture'=>['c'=>"\45",'ac'=>"\0\200\10",'dd'=>"\0",'nt'=>1], |
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130
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'pre'=>['c'=>"\3",'ac'=>"\4",'dd'=>"\0",'pre'=>1,'b'=>1,'cp'=>['p']], |
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'progress'=>['c'=>"\7\0\1\1",'ac'=>"\4",'dd'=>"\0\0\0\1"], |
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132
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'q'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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133
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'rb'=>['c'=>"\0\10",'ac'=>"\4",'dd'=>"\0",'b'=>1], |
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'rp'=>['c'=>"\0\10\100",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['rp','rt']], |
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135
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'rt'=>['c'=>"\0\10\100",'ac'=>"\4",'dd'=>"\0",'b'=>1,'cp'=>['rp','rt']], |
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136
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'rtc'=>['c'=>"\0\10",'ac'=>"\4\0\100",'dd'=>"\0",'b'=>1], |
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137
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'ruby'=>['c'=>"\7",'ac'=>"\4\10",'dd'=>"\0"], |
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138
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's'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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139
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'samp'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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140
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'script'=>['c'=>"\25\200",'ac'=>"\0",'dd'=>"\0",'to'=>1], |
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'section'=>['c'=>"\3\4",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['p']], |
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142
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'select'=>['c'=>"\117",'ac'=>"\0\200\2",'dd'=>"\0",'nt'=>1], |
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143
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'small'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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144
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'source'=>['c'=>"\0\0\10\4",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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145
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'span'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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146
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'strong'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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147
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'style'=>['c'=>"\20",'ac'=>"\0",'dd'=>"\0",'to'=>1,'b'=>1], |
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148
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'sub'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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149
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'summary'=>['c'=>"\0\0\0\2",'ac'=>"\4\1",'dd'=>"\0",'b'=>1], |
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150
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'sup'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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151
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'table'=>['c'=>"\3\0\0\200",'ac'=>"\0\202",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['p']], |
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152
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'tbody'=>['c'=>"\0\2",'ac'=>"\0\200\0\0\100",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['tbody','td','tfoot','th','thead','tr']], |
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153
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'td'=>['c'=>"\200\0\40",'ac'=>"\1",'dd'=>"\0",'b'=>1,'cp'=>['td','th']], |
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154
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'template'=>['c'=>"\25\200\20",'ac'=>"\0",'dd'=>"\0",'nt'=>1], |
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155
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'textarea'=>['c'=>"\117",'ac'=>"\0",'dd'=>"\0",'pre'=>1,'to'=>1], |
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156
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'tfoot'=>['c'=>"\0\2",'ac'=>"\0\200\0\0\100",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['tbody','td','th','thead','tr']], |
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157
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'th'=>['c'=>"\0\0\40",'ac'=>"\1",'dd'=>"\0\5\0\40",'b'=>1,'cp'=>['td','th']], |
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158
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'thead'=>['c'=>"\0\2",'ac'=>"\0\200\0\0\100",'dd'=>"\0",'nt'=>1,'b'=>1], |
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159
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'time'=>['c'=>"\7",'ac'=>"\4",'ac2'=>'@datetime','dd'=>"\0"], |
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160
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'title'=>['c'=>"\20",'ac'=>"\0",'dd'=>"\0",'to'=>1,'b'=>1], |
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161
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'tr'=>['c'=>"\0\2\0\0\100",'ac'=>"\0\200\40",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['td','th','tr']], |
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162
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'track'=>['c'=>"\0\0\0\100",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1,'b'=>1], |
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163
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'u'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0",'fe'=>1], |
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164
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'ul'=>['c'=>"\3",'c1'=>'li','ac'=>"\0\200\0\0\200",'dd'=>"\0",'nt'=>1,'b'=>1,'cp'=>['p']], |
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165
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'var'=>['c'=>"\7",'ac'=>"\4",'dd'=>"\0"], |
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166
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'video'=>['c'=>"\57",'c3'=>'@controls','ac'=>"\0\0\0\104",'ac26'=>'not(@src)','dd'=>"\0\0\0\0\0\2",'dd41'=>'@src','t'=>1], |
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167
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'wbr'=>['c'=>"\5",'ac'=>"\0",'dd'=>"\0",'nt'=>1,'e'=>1,'v'=>1] |
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168
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]; |
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169
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170
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/** |
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171
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* Test whether given child element closes given parent element |
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172
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* |
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173
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* @param DOMElement $child |
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174
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* @param DOMElement $parent |
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175
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* @return bool |
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176
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*/ |
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177
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public static function closesParent(DOMElement $child, DOMElement $parent) |
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178
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{ |
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179
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$parentName = $parent->nodeName; |
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$childName = $child->nodeName; |
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181
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182
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return !empty(self::$htmlElements[$parentName]['cp']) && in_array($childName, self::$htmlElements[$parentName]['cp'], true); |
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183
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} |
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184
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185
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/** |
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186
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* Test whether given element disallows text nodes |
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187
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* |
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188
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* @param DOMElement $element |
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189
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* @return bool |
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190
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*/ |
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191
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public static function disallowsText(DOMElement $element) |
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192
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{ |
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193
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return self::hasProperty($element, 'nt'); |
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194
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} |
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196
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/** |
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197
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* Return the "allowChild" bitfield for given element |
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* |
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* @param DOMElement $element |
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200
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* @return string |
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201
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*/ |
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202
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public static function getAllowChildBitfield(DOMElement $element) |
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203
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{ |
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204
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return self::getBitfield($element, 'ac'); |
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205
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} |
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206
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207
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/** |
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208
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* Return the "category" bitfield for given element |
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* |
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210
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* @param DOMElement $element |
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211
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* @return string |
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212
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*/ |
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213
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public static function getCategoryBitfield(DOMElement $element) |
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214
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{ |
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215
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return self::getBitfield($element, 'c'); |
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216
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} |
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217
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218
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/** |
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219
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* Return the "denyDescendant" bitfield for given element |
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220
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* |
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221
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* @param DOMElement $element |
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222
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* @return string |
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223
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*/ |
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224
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public static function getDenyDescendantBitfield(DOMElement $element) |
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225
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{ |
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226
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return self::getBitfield($element, 'dd'); |
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} |
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228
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229
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/** |
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230
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* Test whether given element is a block element |
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* |
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232
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* @param DOMElement $element |
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233
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* @return bool |
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234
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*/ |
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235
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public static function isBlock(DOMElement $element) |
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236
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{ |
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237
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return self::hasProperty($element, 'b'); |
|
238
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} |
|
239
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240
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/** |
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241
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* Test whether given element uses the empty content model |
|
242
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* |
|
243
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* @param DOMElement $element |
|
244
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* @return bool |
|
245
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*/ |
|
246
|
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public static function isEmpty(DOMElement $element) |
|
247
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{ |
|
248
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|
|
return self::hasProperty($element, 'e'); |
|
249
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|
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} |
|
250
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251
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/** |
|
252
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|
* Test whether given element is a formatting element |
|
253
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|
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* |
|
254
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* @param DOMElement $element |
|
255
|
|
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* @return bool |
|
256
|
|
|
*/ |
|
257
|
|
|
public static function isFormattingElement(DOMElement $element) |
|
258
|
|
|
{ |
|
259
|
|
|
return self::hasProperty($element, 'fe'); |
|
260
|
|
|
} |
|
261
|
|
|
|
|
262
|
|
|
/** |
|
263
|
|
|
* Test whether given element only accepts text nodes |
|
264
|
|
|
* |
|
265
|
|
|
* @param DOMElement $element |
|
266
|
|
|
* @return bool |
|
267
|
|
|
*/ |
|
268
|
|
|
public static function isTextOnly(DOMElement $element) |
|
269
|
|
|
{ |
|
270
|
|
|
return self::hasProperty($element, 'to'); |
|
271
|
|
|
} |
|
272
|
|
|
|
|
273
|
|
|
/** |
|
274
|
|
|
* Test whether given element uses the transparent content model |
|
275
|
|
|
* |
|
276
|
|
|
* @param DOMElement $element |
|
277
|
|
|
* @return bool |
|
278
|
|
|
*/ |
|
279
|
|
|
public static function isTransparent(DOMElement $element) |
|
280
|
|
|
{ |
|
281
|
|
|
return self::hasProperty($element, 't'); |
|
282
|
|
|
} |
|
283
|
|
|
|
|
284
|
|
|
/** |
|
285
|
|
|
* Test whether given element uses the void content model |
|
286
|
|
|
* |
|
287
|
|
|
* @param DOMElement $element |
|
288
|
|
|
* @return bool |
|
289
|
|
|
*/ |
|
290
|
|
|
public static function isVoid(DOMElement $element) |
|
291
|
|
|
{ |
|
292
|
|
|
return self::hasProperty($element, 'v'); |
|
293
|
|
|
} |
|
294
|
|
|
|
|
295
|
|
|
/** |
|
296
|
|
|
* Test whether given element preserves whitespace in its content |
|
297
|
|
|
* |
|
298
|
|
|
* @param DOMElement $element |
|
299
|
|
|
* @return bool |
|
300
|
|
|
*/ |
|
301
|
|
|
public static function preservesWhitespace(DOMElement $element) |
|
302
|
|
|
{ |
|
303
|
|
|
return self::hasProperty($element, 'pre'); |
|
304
|
|
|
} |
|
305
|
|
|
|
|
306
|
|
|
/** |
|
307
|
|
|
* Evaluate an XPath query using given element as context node |
|
308
|
|
|
* |
|
309
|
|
|
* @param string $query XPath query |
|
310
|
|
|
* @param DOMElement $element Context node |
|
311
|
|
|
* @return bool |
|
312
|
|
|
*/ |
|
313
|
|
|
protected static function evaluate($query, DOMElement $element) |
|
314
|
|
|
{ |
|
315
|
|
|
$xpath = new DOMXPath($element->ownerDocument); |
|
316
|
|
|
|
|
317
|
|
|
return $xpath->evaluate('boolean(' . $query . ')', $element); |
|
318
|
|
|
} |
|
319
|
|
|
|
|
320
|
|
|
/** |
|
321
|
|
|
* Get the bitfield value for a given element |
|
322
|
|
|
* |
|
323
|
|
|
* @param DOMElement $element Context node |
|
324
|
|
|
* @param string $name Bitfield name: either 'c', 'ac' or 'dd' |
|
325
|
|
|
* @return string |
|
326
|
|
|
*/ |
|
327
|
|
|
protected static function getBitfield(DOMElement $element, $name) |
|
328
|
|
|
{ |
|
329
|
|
|
$props = self::getProperties($element); |
|
330
|
|
|
$bitfield = self::toBin($props[$name]); |
|
331
|
|
|
|
|
332
|
|
|
// For each bit set to 1, test whether there is an XPath condition to it and whether it is |
|
333
|
|
|
// fulfilled. If not, turn the bit to 0 |
|
334
|
|
|
foreach (array_keys(array_filter(str_split($bitfield, 1))) as $bitNumber) |
|
335
|
|
|
{ |
|
336
|
|
|
$conditionName = $name . $bitNumber; |
|
337
|
|
|
if (isset($props[$conditionName]) && !self::evaluate($props[$conditionName], $element)) |
|
338
|
|
|
{ |
|
339
|
|
|
$bitfield[$bitNumber] = '0'; |
|
340
|
|
|
} |
|
341
|
|
|
} |
|
342
|
|
|
|
|
343
|
|
|
return self::toRaw($bitfield); |
|
344
|
|
|
} |
|
345
|
|
|
|
|
346
|
|
|
/** |
|
347
|
|
|
* Return the properties associated with given element |
|
348
|
|
|
* |
|
349
|
|
|
* Returns span's properties if the element is not defined |
|
350
|
|
|
* |
|
351
|
|
|
* @param DOMElement $element |
|
352
|
|
|
* @return array |
|
353
|
|
|
*/ |
|
354
|
|
|
protected static function getProperties(DOMElement $element) |
|
355
|
|
|
{ |
|
356
|
|
|
return (isset(self::$htmlElements[$element->nodeName])) ? self::$htmlElements[$element->nodeName] : self::$htmlElements['span']; |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
|
|
/** |
|
360
|
|
|
* Test whether given element has given property in context |
|
361
|
|
|
* |
|
362
|
|
|
* @param DOMElement $element Context node |
|
363
|
|
|
* @param string $propName Property name, see self::$htmlElements |
|
364
|
|
|
* @return bool |
|
365
|
|
|
*/ |
|
366
|
|
|
protected static function hasProperty(DOMElement $element, $propName) |
|
367
|
|
|
{ |
|
368
|
|
|
$props = self::getProperties($element); |
|
369
|
|
|
|
|
370
|
|
|
return !empty($props[$propName]) && (!isset($props[$propName . '?']) || self::evaluate($props[$propName . '?'], $element)); |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
|
|
/** |
|
374
|
|
|
* Convert a raw string to a series of 0 and 1 in LSB order |
|
375
|
|
|
* |
|
376
|
|
|
* @param string $raw |
|
377
|
|
|
* @return string |
|
378
|
|
|
*/ |
|
379
|
|
|
protected static function toBin($raw) |
|
380
|
|
|
{ |
|
381
|
|
|
$bin = ''; |
|
382
|
|
|
foreach (str_split($raw, 1) as $char) |
|
383
|
|
|
{ |
|
384
|
|
|
$bin .= strrev(substr('0000000' . decbin(ord($char)), -8)); |
|
385
|
|
|
} |
|
386
|
|
|
|
|
387
|
|
|
return $bin; |
|
388
|
|
|
} |
|
389
|
|
|
|
|
390
|
|
|
/** |
|
391
|
|
|
* Convert a series of 0 and 1 in LSB order to a raw string |
|
392
|
|
|
* |
|
393
|
|
|
* @param string $bin |
|
394
|
|
|
* @return string |
|
395
|
|
|
*/ |
|
396
|
|
|
protected static function toRaw($bin) |
|
397
|
|
|
{ |
|
398
|
|
|
return implode('', array_map('chr', array_map('bindec', array_map('strrev', str_split($bin, 8))))); |
|
399
|
|
|
} |
|
400
|
|
|
} |
s9e /
TextFormatter
