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Directory >> /var/www/html/back/vendor/ezyang/htmlpurifier/library/HTMLPurifier/

File / Folder	Size	Action
.	-
AttrDef	--	ren
AttrTransform	--	ren
ChildDef	--	ren
ConfigSchema	--	ren
DefinitionCache	--	ren
EntityLookup	--	ren
Filter	--	ren
HTMLModule	--	ren
Injector	--	ren
Language	--	ren
Lexer	--	ren
Node	--	ren
Printer	--	ren
Strategy	--	ren
TagTransform	--	ren
Token	--	ren
URIFilter	--	ren
URIScheme	--	ren
VarParser	--	ren
Arborize.php	2.49KB	edt ren
AttrCollections.php	4.748KB	edt ren
AttrDef.php	5.073KB	edt ren
AttrTransform.php	1.942KB	edt ren
AttrTypes.php	3.662KB	edt ren
AttrValidator.php	6.419KB	edt ren
Bootstrap.php	2.637KB	edt ren
CSSDefinition.php	19.489KB	edt ren
ChildDef.php	1.522KB	edt ren
Config.php	31.065KB	edt ren
ConfigSchema.php	5.757KB	edt ren
ContentSets.php	5.473KB	edt ren
Context.php	2.363KB	edt ren
Definition.php	1.329KB	edt ren
DefinitionCache.php	3.821KB	edt ren
DefinitionCacheFactory.php	3.119KB	edt ren
Doctype.php	1.545KB	edt ren
DoctypeRegistry.php	4.117KB	edt ren
ElementDef.php	7.354KB	edt ren
Encoder.php	25.106KB	edt ren
EntityLookup.php	1.393KB	edt ren
EntityParser.php	9.801KB	edt ren
ErrorCollector.php	7.446KB	edt ren
ErrorStruct.php	1.849KB	edt ren
Exception.php	0.173KB	edt ren
Filter.php	1.587KB	edt ren
Generator.php	10.012KB	edt ren
HTMLDefinition.php	17.166KB	edt ren
HTMLModule.php	9.956KB	edt ren
HTMLModuleManager.php	15.469KB	edt ren
IDAccumulator.php	1.608KB	edt ren
Injector.php	8.795KB	edt ren
Language.php	5.92KB	edt ren
LanguageFactory.php	6.298KB	edt ren
Length.php	3.801KB	edt ren
Lexer.php	12.711KB	edt ren
Node.php	1.25KB	edt ren
PercentEncoder.php	3.481KB	edt ren
Printer.php	5.759KB	edt ren
PropertyList.php	2.718KB	edt ren
PropertyListIterator.php	0.873KB	edt ren
Queue.php	1.515KB	edt ren
Strategy.php	0.744KB	edt ren
StringHash.php	1.073KB	edt ren
StringHashParser.php	3.556KB	edt ren
TagTransform.php	1.072KB	edt ren
Token.php	2.173KB	edt ren
TokenFactory.php	3.026KB	edt ren
URI.php	10.367KB	edt ren
URIDefinition.php	3.35KB	edt ren
URIFilter.php	2.31KB	edt ren
URIParser.php	2.24KB	edt ren
URIScheme.php	3.399KB	edt ren
URISchemeRegistry.php	2.353KB	edt ren
UnitConverter.php	9.908KB	edt ren
VarParser.php	5.85KB	edt ren
VarParserException.php	0.153KB	edt ren
Zipper.php	4.338KB	edt ren

<?php

/**
 * A zipper is a purely-functional data structure which contains
 * a focus that can be efficiently manipulated.  It is known as
 * a "one-hole context".  This mutable variant implements a zipper
 * for a list as a pair of two arrays, laid out as follows:
 *
 *      Base list: 1 2 3 4 [ ] 6 7 8 9
 *      Front list: 1 2 3 4
 *      Back list: 9 8 7 6
 *
 * User is expected to keep track of the "current element" and properly
 * fill it back in as necessary.  (ToDo: Maybe it's more user friendly
 * to implicitly track the current element?)
 *
 * Nota bene: the current class gets confused if you try to store NULLs
 * in the list.
 */

class HTMLPurifier_Zipper
{
    public $front, $back;

public function __construct($front, $back) {
        $this->front = $front;
        $this->back = $back;
    }

/**
     * Creates a zipper from an array, with a hole in the
     * 0-index position.
     * @param Array to zipper-ify.
     * @return Tuple of zipper and element of first position.
     */
    static public function fromArray($array) {
        $z = new self(array(), array_reverse($array));
        $t = $z->delete(); // delete the "dummy hole"
        return array($z, $t);
    }

/**
     * Convert zipper back into a normal array, optionally filling in
     * the hole with a value. (Usually you should supply a $t, unless you
     * are at the end of the array.)
     */
    public function toArray($t = NULL) {
        $a = $this->front;
        if ($t !== NULL) $a[] = $t;
        for ($i = count($this->back)-1; $i >= 0; $i--) {
            $a[] = $this->back[$i];
        }
        return $a;
    }

/**
     * Move hole to the next element.
     * @param $t Element to fill hole with
     * @return Original contents of new hole.
     */
    public function next($t) {
        if ($t !== NULL) array_push($this->front, $t);
        return empty($this->back) ? NULL : array_pop($this->back);
    }

/**
     * Iterated hole advancement.
     * @param $t Element to fill hole with
     * @param $i How many forward to advance hole
     * @return Original contents of new hole, i away
     */
    public function advance($t, $n) {
        for ($i = 0; $i < $n; $i++) {
            $t = $this->next($t);
        }
        return $t;
    }

/**
     * Move hole to the previous element
     * @param $t Element to fill hole with
     * @return Original contents of new hole.
     */
    public function prev($t) {
        if ($t !== NULL) array_push($this->back, $t);
        return empty($this->front) ? NULL : array_pop($this->front);
    }

/**
     * Delete contents of current hole, shifting hole to
     * next element.
     * @return Original contents of new hole.
     */
    public function delete() {
        return empty($this->back) ? NULL : array_pop($this->back);
    }

/**
     * Returns true if we are at the end of the list.
     * @return bool
     */
    public function done() {
        return empty($this->back);
    }

/**
     * Insert element before hole.
     * @param Element to insert
     */
    public function insertBefore($t) {
        if ($t !== NULL) array_push($this->front, $t);
    }

/**
     * Insert element after hole.
     * @param Element to insert
     */
    public function insertAfter($t) {
        if ($t !== NULL) array_push($this->back, $t);
    }

/**
     * Splice in multiple elements at hole.  Functional specification
     * in terms of array_splice:
     *
     *      $arr1 = $arr;
     *      $old1 = array_splice($arr1, $i, $delete, $replacement);
     *
     *      list($z, $t) = HTMLPurifier_Zipper::fromArray($arr);
     *      $t = $z->advance($t, $i);
     *      list($old2, $t) = $z->splice($t, $delete, $replacement);
     *      $arr2 = $z->toArray($t);
     *
     *      assert($old1 === $old2);
     *      assert($arr1 === $arr2);
     *
     * NB: the absolute index location after this operation is
     * *unchanged!*
     *
     * @param Current contents of hole.
     */
    public function splice($t, $delete, $replacement) {
        // delete
        $old = array();
        $r = $t;
        for ($i = $delete; $i > 0; $i--) {
            $old[] = $r;
            $r = $this->delete();
        }
        // insert
        for ($i = count($replacement)-1; $i >= 0; $i--) {
            $this->insertAfter($r);
            $r = $replacement[$i];
        }
        return array($old, $r);
    }
}

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