:arrow_up: Update HTML Purifier library.

Updated HTML Purifier from 4.6.0 to 4.9.2 with better PHP7 compatibility.
Used composer to manage this library.

1 files changed, 0 insertions, 281 deletions

diff --git a/library/HTMLPurifier/Injector.php b/library/HTMLPurifier/Injector.php
deleted file mode 100644
index 5060eef9e..000000000
--- a/library/HTMLPurifier/Injector.php
+++ /dev/null
@@ -1,281 +0,0 @@
-<?php
-
-/**
- * Injects tokens into the document while parsing for well-formedness.
- * This enables "formatter-like" functionality such as auto-paragraphing,
- * smiley-ification and linkification to take place.
- *
- * A note on how handlers create changes; this is done by assigning a new
- * value to the $token reference. These values can take a variety of forms and
- * are best described HTMLPurifier_Strategy_MakeWellFormed->processToken()
- * documentation.
- *
- * @todo Allow injectors to request a re-run on their output. This
- *       would help if an operation is recursive.
- */
-abstract class HTMLPurifier_Injector
-{
-
-    /**
-     * Advisory name of injector, this is for friendly error messages.
-     * @type string
-     */
-    public $name;
-
-    /**
-     * @type HTMLPurifier_HTMLDefinition
-     */
-    protected $htmlDefinition;
-
-    /**
-     * Reference to CurrentNesting variable in Context. This is an array
-     * list of tokens that we are currently "inside"
-     * @type array
-     */
-    protected $currentNesting;
-
-    /**
-     * Reference to current token.
-     * @type HTMLPurifier_Token
-     */
-    protected $currentToken;
-
-    /**
-     * Reference to InputZipper variable in Context.
-     * @type HTMLPurifier_Zipper
-     */
-    protected $inputZipper;
-
-    /**
-     * Array of elements and attributes this injector creates and therefore
-     * need to be allowed by the definition. Takes form of
-     * array('element' => array('attr', 'attr2'), 'element2')
-     * @type array
-     */
-    public $needed = array();
-
-    /**
-     * Number of elements to rewind backwards (relative).
-     * @type bool|int
-     */
-    protected $rewindOffset = false;
-
-    /**
-     * Rewind to a spot to re-perform processing. This is useful if you
-     * deleted a node, and now need to see if this change affected any
-     * earlier nodes. Rewinding does not affect other injectors, and can
-     * result in infinite loops if not used carefully.
-     * @param bool|int $offset
-     * @warning HTML Purifier will prevent you from fast-forwarding with this
-     *          function.
-     */
-    public function rewindOffset($offset)
-    {
-        $this->rewindOffset = $offset;
-    }
-
-    /**
-     * Retrieves rewind offset, and then unsets it.
-     * @return bool|int
-     */
-    public function getRewindOffset()
-    {
-        $r = $this->rewindOffset;
-        $this->rewindOffset = false;
-        return $r;
-    }
-
-    /**
-     * Prepares the injector by giving it the config and context objects:
-     * this allows references to important variables to be made within
-     * the injector. This function also checks if the HTML environment
-     * will work with the Injector (see checkNeeded()).
-     * @param HTMLPurifier_Config $config
-     * @param HTMLPurifier_Context $context
-     * @return bool|string Boolean false if success, string of missing needed element/attribute if failure
-     */
-    public function prepare($config, $context)
-    {
-        $this->htmlDefinition = $config->getHTMLDefinition();
-        // Even though this might fail, some unit tests ignore this and
-        // still test checkNeeded, so be careful. Maybe get rid of that
-        // dependency.
-        $result = $this->checkNeeded($config);
-        if ($result !== false) {
-            return $result;
-        }
-        $this->currentNesting =& $context->get('CurrentNesting');
-        $this->currentToken   =& $context->get('CurrentToken');
-        $this->inputZipper    =& $context->get('InputZipper');
-        return false;
-    }
-
-    /**
-     * This function checks if the HTML environment
-     * will work with the Injector: if p tags are not allowed, the
-     * Auto-Paragraphing injector should not be enabled.
-     * @param HTMLPurifier_Config $config
-     * @return bool|string Boolean false if success, string of missing needed element/attribute if failure
-     */
-    public function checkNeeded($config)
-    {
-        $def = $config->getHTMLDefinition();
-        foreach ($this->needed as $element => $attributes) {
-            if (is_int($element)) {
-                $element = $attributes;
-            }
-            if (!isset($def->info[$element])) {
-                return $element;
-            }
-            if (!is_array($attributes)) {
-                continue;
-            }
-            foreach ($attributes as $name) {
-                if (!isset($def->info[$element]->attr[$name])) {
-                    return "$element.$name";
-                }
-            }
-        }
-        return false;
-    }
-
-    /**
-     * Tests if the context node allows a certain element
-     * @param string $name Name of element to test for
-     * @return bool True if element is allowed, false if it is not
-     */
-    public function allowsElement($name)
-    {
-        if (!empty($this->currentNesting)) {
-            $parent_token = array_pop($this->currentNesting);
-            $this->currentNesting[] = $parent_token;
-            $parent = $this->htmlDefinition->info[$parent_token->name];
-        } else {
-            $parent = $this->htmlDefinition->info_parent_def;
-        }
-        if (!isset($parent->child->elements[$name]) || isset($parent->excludes[$name])) {
-            return false;
-        }
-        // check for exclusion
-        for ($i = count($this->currentNesting) - 2; $i >= 0; $i--) {
-            $node = $this->currentNesting[$i];
-            $def  = $this->htmlDefinition->info[$node->name];
-            if (isset($def->excludes[$name])) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    /**
-     * Iterator function, which starts with the next token and continues until
-     * you reach the end of the input tokens.
-     * @warning Please prevent previous references from interfering with this
-     *          functions by setting $i = null beforehand!
-     * @param int $i Current integer index variable for inputTokens
-     * @param HTMLPurifier_Token $current Current token variable.
-     *          Do NOT use $token, as that variable is also a reference
-     * @return bool
-     */
-    protected function forward(&$i, &$current)
-    {
-        if ($i === null) {
-            $i = count($this->inputZipper->back) - 1;
-        } else {
-            $i--;
-        }
-        if ($i < 0) {
-            return false;
-        }
-        $current = $this->inputZipper->back[$i];
-        return true;
-    }
-
-    /**
-     * Similar to _forward, but accepts a third parameter $nesting (which
-     * should be initialized at 0) and stops when we hit the end tag
-     * for the node $this->inputIndex starts in.
-     * @param int $i Current integer index variable for inputTokens
-     * @param HTMLPurifier_Token $current Current token variable.
-     *          Do NOT use $token, as that variable is also a reference
-     * @param int $nesting
-     * @return bool
-     */
-    protected function forwardUntilEndToken(&$i, &$current, &$nesting)
-    {
-        $result = $this->forward($i, $current);
-        if (!$result) {
-            return false;
-        }
-        if ($nesting === null) {
-            $nesting = 0;
-        }
-        if ($current instanceof HTMLPurifier_Token_Start) {
-            $nesting++;
-        } elseif ($current instanceof HTMLPurifier_Token_End) {
-            if ($nesting <= 0) {
-                return false;
-            }
-            $nesting--;
-        }
-        return true;
-    }
-
-    /**
-     * Iterator function, starts with the previous token and continues until
-     * you reach the beginning of input tokens.
-     * @warning Please prevent previous references from interfering with this
-     *          functions by setting $i = null beforehand!
-     * @param int $i Current integer index variable for inputTokens
-     * @param HTMLPurifier_Token $current Current token variable.
-     *          Do NOT use $token, as that variable is also a reference
-     * @return bool
-     */
-    protected function backward(&$i, &$current)
-    {
-        if ($i === null) {
-            $i = count($this->inputZipper->front) - 1;
-        } else {
-            $i--;
-        }
-        if ($i < 0) {
-            return false;
-        }
-        $current = $this->inputZipper->front[$i];
-        return true;
-    }
-
-    /**
-     * Handler that is called when a text token is processed
-     */
-    public function handleText(&$token)
-    {
-    }
-
-    /**
-     * Handler that is called when a start or empty token is processed
-     */
-    public function handleElement(&$token)
-    {
-    }
-
-    /**
-     * Handler that is called when an end token is processed
-     */
-    public function handleEnd(&$token)
-    {
-        $this->notifyEnd($token);
-    }
-
-    /**
-     * Notifier that is called when an end token is processed
-     * @param HTMLPurifier_Token $token Current token variable.
-     * @note This differs from handlers in that the token is read-only
-     * @deprecated
-     */
-    public function notifyEnd($token)
-    {
-    }
-}
-
-// vim: et sw=4 sts=4