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.
Esempio n. 1
0
 public function testBasicNavigation()
 {
     list($z, $t) = HTMLPurifier_Zipper::fromArray(array(0, 1, 2, 3));
     $this->assertIdentical($t, 0);
     $t = $z->next($t);
     $this->assertIdentical($t, 1);
     $t = $z->prev($t);
     $this->assertIdentical($t, 0);
     $t = $z->advance($t, 2);
     $this->assertIdentical($t, 2);
     $t = $z->delete();
     $this->assertIdentical($t, 3);
     $z->insertBefore(4);
     $z->insertAfter(5);
     $this->assertIdentical($z->toArray($t), array(0, 1, 4, 3, 5));
     list($old, $t) = $z->splice($t, 2, array(6, 7));
     $this->assertIdentical($old, array(3, 5));
     $this->assertIdentical($t, 6);
     $this->assertIdentical($z->toArray($t), array(0, 1, 4, 6, 7));
 }
 /**
  * @param HTMLPurifier_Token[] $tokens
  * @param HTMLPurifier_Config $config
  * @param HTMLPurifier_Context $context
  * @return HTMLPurifier_Token[]
  * @throws HTMLPurifier_Exception
  */
 public function execute($tokens, $config, $context)
 {
     $definition = $config->getHTMLDefinition();
     // local variables
     $generator = new HTMLPurifier_Generator($config, $context);
     $escape_invalid_tags = $config->get('Core.EscapeInvalidTags');
     // used for autoclose early abortion
     $global_parent_allowed_elements = $definition->info_parent_def->child->getAllowedElements($config);
     $e = $context->get('ErrorCollector', true);
     $i = false;
     // injector index
     list($zipper, $token) = HTMLPurifier_Zipper::fromArray($tokens);
     if ($token === NULL) {
         return array();
     }
     $reprocess = false;
     // whether or not to reprocess the same token
     $stack = array();
     // member variables
     $this->stack =& $stack;
     $this->tokens =& $tokens;
     $this->token =& $token;
     $this->zipper =& $zipper;
     $this->config = $config;
     $this->context = $context;
     // context variables
     $context->register('CurrentNesting', $stack);
     $context->register('InputZipper', $zipper);
     $context->register('CurrentToken', $token);
     // -- begin INJECTOR --
     $this->injectors = array();
     $injectors = $config->getBatch('AutoFormat');
     $def_injectors = $definition->info_injector;
     $custom_injectors = $injectors['Custom'];
     unset($injectors['Custom']);
     // special case
     foreach ($injectors as $injector => $b) {
         // XXX: Fix with a legitimate lookup table of enabled filters
         if (strpos($injector, '.') !== false) {
             continue;
         }
         $injector = "HTMLPurifier_Injector_{$injector}";
         if (!$b) {
             continue;
         }
         $this->injectors[] = new $injector();
     }
     foreach ($def_injectors as $injector) {
         // assumed to be objects
         $this->injectors[] = $injector;
     }
     foreach ($custom_injectors as $injector) {
         if (!$injector) {
             continue;
         }
         if (is_string($injector)) {
             $injector = "HTMLPurifier_Injector_{$injector}";
             $injector = new $injector();
         }
         $this->injectors[] = $injector;
     }
     // give the injectors references to the definition and context
     // variables for performance reasons
     foreach ($this->injectors as $ix => $injector) {
         $error = $injector->prepare($config, $context);
         if (!$error) {
             continue;
         }
         array_splice($this->injectors, $ix, 1);
         // rm the injector
         trigger_error("Cannot enable {$injector->name} injector because {$error} is not allowed", E_USER_WARNING);
     }
     // -- end INJECTOR --
     // a note on reprocessing:
     //      In order to reduce code duplication, whenever some code needs
     //      to make HTML changes in order to make things "correct", the
     //      new HTML gets sent through the purifier, regardless of its
     //      status. This means that if we add a start token, because it
     //      was totally necessary, we don't have to update nesting; we just
     //      punt ($reprocess = true; continue;) and it does that for us.
     // isset is in loop because $tokens size changes during loop exec
     for (;; $reprocess ? $reprocess = false : ($token = $zipper->next($token))) {
         // check for a rewind
         if (is_int($i)) {
             // possibility: disable rewinding if the current token has a
             // rewind set on it already. This would offer protection from
             // infinite loop, but might hinder some advanced rewinding.
             $rewind_offset = $this->injectors[$i]->getRewindOffset();
             if (is_int($rewind_offset)) {
                 for ($j = 0; $j < $rewind_offset; $j++) {
                     if (empty($zipper->front)) {
                         break;
                     }
                     $token = $zipper->prev($token);
                     // indicate that other injectors should not process this token,
                     // but we need to reprocess it
                     unset($token->skip[$i]);
                     $token->rewind = $i;
                     if ($token instanceof HTMLPurifier_Token_Start) {
                         array_pop($this->stack);
                     } elseif ($token instanceof HTMLPurifier_Token_End) {
                         $this->stack[] = $token->start;
                     }
                 }
             }
             $i = false;
         }
         // handle case of document end
         if ($token === NULL) {
             // kill processing if stack is empty
             if (empty($this->stack)) {
                 break;
             }
             // peek
             $top_nesting = array_pop($this->stack);
             $this->stack[] = $top_nesting;
             // send error [TagClosedSuppress]
             if ($e && !isset($top_nesting->armor['MakeWellFormed_TagClosedError'])) {
                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by document end', $top_nesting);
             }
             // append, don't splice, since this is the end
             $token = new HTMLPurifier_Token_End($top_nesting->name);
             // punt!
             $reprocess = true;
             continue;
         }
         //echo '<br>'; printZipper($zipper, $token);//printTokens($this->stack);
         //flush();
         // quick-check: if it's not a tag, no need to process
         if (empty($token->is_tag)) {
             if ($token instanceof HTMLPurifier_Token_Text) {
                 foreach ($this->injectors as $i => $injector) {
                     if (isset($token->skip[$i])) {
                         continue;
                     }
                     if ($token->rewind !== null && $token->rewind !== $i) {
                         continue;
                     }
                     // XXX fuckup
                     $r = $token;
                     $injector->handleText($r);
                     $token = $this->processToken($r, $i);
                     $reprocess = true;
                     break;
                 }
             }
             // another possibility is a comment
             continue;
         }
         if (isset($definition->info[$token->name])) {
             $type = $definition->info[$token->name]->child->type;
         } else {
             $type = false;
             // Type is unknown, treat accordingly
         }
         // quick tag checks: anything that's *not* an end tag
         $ok = false;
         if ($type === 'empty' && $token instanceof HTMLPurifier_Token_Start) {
             // claims to be a start tag but is empty
             $token = new HTMLPurifier_Token_Empty($token->name, $token->attr, $token->line, $token->col, $token->armor);
             $ok = true;
         } elseif ($type && $type !== 'empty' && $token instanceof HTMLPurifier_Token_Empty) {
             // claims to be empty but really is a start tag
             // NB: this assignment is required
             $old_token = $token;
             $token = new HTMLPurifier_Token_End($token->name);
             $token = $this->insertBefore(new HTMLPurifier_Token_Start($old_token->name, $old_token->attr, $old_token->line, $old_token->col, $old_token->armor));
             // punt (since we had to modify the input stream in a non-trivial way)
             $reprocess = true;
             continue;
         } elseif ($token instanceof HTMLPurifier_Token_Empty) {
             // real empty token
             $ok = true;
         } elseif ($token instanceof HTMLPurifier_Token_Start) {
             // start tag
             // ...unless they also have to close their parent
             if (!empty($this->stack)) {
                 // Performance note: you might think that it's rather
                 // inefficient, recalculating the autoclose information
                 // for every tag that a token closes (since when we
                 // do an autoclose, we push a new token into the
                 // stream and then /process/ that, before
                 // re-processing this token.)  But this is
                 // necessary, because an injector can make an
                 // arbitrary transformations to the autoclosing
                 // tokens we introduce, so things may have changed
                 // in the meantime.  Also, doing the inefficient thing is
                 // "easy" to reason about (for certain perverse definitions
                 // of "easy")
                 $parent = array_pop($this->stack);
                 $this->stack[] = $parent;
                 $parent_def = null;
                 $parent_elements = null;
                 $autoclose = false;
                 if (isset($definition->info[$parent->name])) {
                     $parent_def = $definition->info[$parent->name];
                     $parent_elements = $parent_def->child->getAllowedElements($config);
                     $autoclose = !isset($parent_elements[$token->name]);
                 }
                 if ($autoclose && $definition->info[$token->name]->wrap) {
                     // Check if an element can be wrapped by another
                     // element to make it valid in a context (for
                     // example, <ul><ul> needs a <li> in between)
                     $wrapname = $definition->info[$token->name]->wrap;
                     $wrapdef = $definition->info[$wrapname];
                     $elements = $wrapdef->child->getAllowedElements($config);
                     if (isset($elements[$token->name]) && isset($parent_elements[$wrapname])) {
                         $newtoken = new HTMLPurifier_Token_Start($wrapname);
                         $token = $this->insertBefore($newtoken);
                         $reprocess = true;
                         continue;
                     }
                 }
                 $carryover = false;
                 if ($autoclose && $parent_def->formatting) {
                     $carryover = true;
                 }
                 if ($autoclose) {
                     // check if this autoclose is doomed to fail
                     // (this rechecks $parent, which his harmless)
                     $autoclose_ok = isset($global_parent_allowed_elements[$token->name]);
                     if (!$autoclose_ok) {
                         foreach ($this->stack as $ancestor) {
                             $elements = $definition->info[$ancestor->name]->child->getAllowedElements($config);
                             if (isset($elements[$token->name])) {
                                 $autoclose_ok = true;
                                 break;
                             }
                             if ($definition->info[$token->name]->wrap) {
                                 $wrapname = $definition->info[$token->name]->wrap;
                                 $wrapdef = $definition->info[$wrapname];
                                 $wrap_elements = $wrapdef->child->getAllowedElements($config);
                                 if (isset($wrap_elements[$token->name]) && isset($elements[$wrapname])) {
                                     $autoclose_ok = true;
                                     break;
                                 }
                             }
                         }
                     }
                     if ($autoclose_ok) {
                         // errors need to be updated
                         $new_token = new HTMLPurifier_Token_End($parent->name);
                         $new_token->start = $parent;
                         // [TagClosedSuppress]
                         if ($e && !isset($parent->armor['MakeWellFormed_TagClosedError'])) {
                             if (!$carryover) {
                                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag auto closed', $parent);
                             } else {
                                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag carryover', $parent);
                             }
                         }
                         if ($carryover) {
                             $element = clone $parent;
                             // [TagClosedAuto]
                             $element->armor['MakeWellFormed_TagClosedError'] = true;
                             $element->carryover = true;
                             $token = $this->processToken(array($new_token, $token, $element));
                         } else {
                             $token = $this->insertBefore($new_token);
                         }
                     } else {
                         $token = $this->remove();
                     }
                     $reprocess = true;
                     continue;
                 }
             }
             $ok = true;
         }
         if ($ok) {
             foreach ($this->injectors as $i => $injector) {
                 if (isset($token->skip[$i])) {
                     continue;
                 }
                 if ($token->rewind !== null && $token->rewind !== $i) {
                     continue;
                 }
                 $r = $token;
                 $injector->handleElement($r);
                 $token = $this->processToken($r, $i);
                 $reprocess = true;
                 break;
             }
             if (!$reprocess) {
                 // ah, nothing interesting happened; do normal processing
                 if ($token instanceof HTMLPurifier_Token_Start) {
                     $this->stack[] = $token;
                 } elseif ($token instanceof HTMLPurifier_Token_End) {
                     throw new HTMLPurifier_Exception('Improper handling of end tag in start code; possible error in MakeWellFormed');
                 }
             }
             continue;
         }
         // sanity check: we should be dealing with a closing tag
         if (!$token instanceof HTMLPurifier_Token_End) {
             throw new HTMLPurifier_Exception('Unaccounted for tag token in input stream, bug in HTML Purifier');
         }
         // make sure that we have something open
         if (empty($this->stack)) {
             if ($escape_invalid_tags) {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag to text');
                 }
                 $token = new HTMLPurifier_Token_Text($generator->generateFromToken($token));
             } else {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag removed');
                 }
                 $token = $this->remove();
             }
             $reprocess = true;
             continue;
         }
         // first, check for the simplest case: everything closes neatly.
         // Eventually, everything passes through here; if there are problems
         // we modify the input stream accordingly and then punt, so that
         // the tokens get processed again.
         $current_parent = array_pop($this->stack);
         if ($current_parent->name == $token->name) {
             $token->start = $current_parent;
             foreach ($this->injectors as $i => $injector) {
                 if (isset($token->skip[$i])) {
                     continue;
                 }
                 if ($token->rewind !== null && $token->rewind !== $i) {
                     continue;
                 }
                 $r = $token;
                 $injector->handleEnd($r);
                 $token = $this->processToken($r, $i);
                 $this->stack[] = $current_parent;
                 $reprocess = true;
                 break;
             }
             continue;
         }
         // okay, so we're trying to close the wrong tag
         // undo the pop previous pop
         $this->stack[] = $current_parent;
         // scroll back the entire nest, trying to find our tag.
         // (feature could be to specify how far you'd like to go)
         $size = count($this->stack);
         // -2 because -1 is the last element, but we already checked that
         $skipped_tags = false;
         for ($j = $size - 2; $j >= 0; $j--) {
             if ($this->stack[$j]->name == $token->name) {
                 $skipped_tags = array_slice($this->stack, $j);
                 break;
             }
         }
         // we didn't find the tag, so remove
         if ($skipped_tags === false) {
             if ($escape_invalid_tags) {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag to text');
                 }
                 $token = new HTMLPurifier_Token_Text($generator->generateFromToken($token));
             } else {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag removed');
                 }
                 $token = $this->remove();
             }
             $reprocess = true;
             continue;
         }
         // do errors, in REVERSE $j order: a,b,c with </a></b></c>
         $c = count($skipped_tags);
         if ($e) {
             for ($j = $c - 1; $j > 0; $j--) {
                 // notice we exclude $j == 0, i.e. the current ending tag, from
                 // the errors... [TagClosedSuppress]
                 if (!isset($skipped_tags[$j]->armor['MakeWellFormed_TagClosedError'])) {
                     $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by element end', $skipped_tags[$j]);
                 }
             }
         }
         // insert tags, in FORWARD $j order: c,b,a with </a></b></c>
         $replace = array($token);
         for ($j = 1; $j < $c; $j++) {
             // ...as well as from the insertions
             $new_token = new HTMLPurifier_Token_End($skipped_tags[$j]->name);
             $new_token->start = $skipped_tags[$j];
             array_unshift($replace, $new_token);
             if (isset($definition->info[$new_token->name]) && $definition->info[$new_token->name]->formatting) {
                 // [TagClosedAuto]
                 $element = clone $skipped_tags[$j];
                 $element->carryover = true;
                 $element->armor['MakeWellFormed_TagClosedError'] = true;
                 $replace[] = $element;
             }
         }
         $token = $this->processToken($replace);
         $reprocess = true;
         continue;
     }
     $context->destroy('CurrentToken');
     $context->destroy('CurrentNesting');
     $context->destroy('InputZipper');
     unset($this->injectors, $this->stack, $this->tokens);
     return $zipper->toArray($token);
 }
 public function execute($tokens, $config, $context)
 {
     $definition = $config->getHTMLDefinition();
     $generator = new HTMLPurifier_Generator($config, $context);
     $escape_invalid_tags = $config->get('Core.EscapeInvalidTags');
     $global_parent_allowed_elements = $definition->info_parent_def->child->getAllowedElements($config);
     $e = $context->get('ErrorCollector', true);
     $i = false;
     list($zipper, $token) = HTMLPurifier_Zipper::fromArray($tokens);
     if ($token === NULL) {
         return array();
     }
     $reprocess = false;
     $stack = array();
     $this->stack =& $stack;
     $this->tokens =& $tokens;
     $this->token =& $token;
     $this->zipper =& $zipper;
     $this->config = $config;
     $this->context = $context;
     $context->register('CurrentNesting', $stack);
     $context->register('InputZipper', $zipper);
     $context->register('CurrentToken', $token);
     $this->injectors = array();
     $injectors = $config->getBatch('AutoFormat');
     $def_injectors = $definition->info_injector;
     $custom_injectors = $injectors['Custom'];
     unset($injectors['Custom']);
     foreach ($injectors as $injector => $b) {
         if (strpos($injector, '.') !== false) {
             continue;
         }
         $injector = "HTMLPurifier_Injector_{$injector}";
         if (!$b) {
             continue;
         }
         $this->injectors[] = new $injector();
     }
     foreach ($def_injectors as $injector) {
         $this->injectors[] = $injector;
     }
     foreach ($custom_injectors as $injector) {
         if (!$injector) {
             continue;
         }
         if (is_string($injector)) {
             $injector = "HTMLPurifier_Injector_{$injector}";
             $injector = new $injector();
         }
         $this->injectors[] = $injector;
     }
     foreach ($this->injectors as $ix => $injector) {
         $error = $injector->prepare($config, $context);
         if (!$error) {
             continue;
         }
         array_splice($this->injectors, $ix, 1);
         trigger_error("Cannot enable {$injector->name} injector because {$error} is not allowed", E_USER_WARNING);
     }
     for (;; $reprocess ? $reprocess = false : ($token = $zipper->next($token))) {
         if (is_int($i)) {
             $rewind_offset = $this->injectors[$i]->getRewindOffset();
             if (is_int($rewind_offset)) {
                 for ($j = 0; $j < $rewind_offset; $j++) {
                     if (empty($zipper->front)) {
                         break;
                     }
                     $token = $zipper->prev($token);
                     unset($token->skip[$i]);
                     $token->rewind = $i;
                     if ($token instanceof HTMLPurifier_Token_Start) {
                         array_pop($this->stack);
                     } elseif ($token instanceof HTMLPurifier_Token_End) {
                         $this->stack[] = $token->start;
                     }
                 }
             }
             $i = false;
         }
         if ($token === NULL) {
             if (empty($this->stack)) {
                 break;
             }
             $top_nesting = array_pop($this->stack);
             $this->stack[] = $top_nesting;
             if ($e && !isset($top_nesting->armor['MakeWellFormed_TagClosedError'])) {
                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by document end', $top_nesting);
             }
             $token = new HTMLPurifier_Token_End($top_nesting->name);
             $reprocess = true;
             continue;
         }
         if (empty($token->is_tag)) {
             if ($token instanceof HTMLPurifier_Token_Text) {
                 foreach ($this->injectors as $i => $injector) {
                     if (isset($token->skip[$i])) {
                         continue;
                     }
                     if ($token->rewind !== null && $token->rewind !== $i) {
                         continue;
                     }
                     $r = $token;
                     $injector->handleText($r);
                     $token = $this->processToken($r, $i);
                     $reprocess = true;
                     break;
                 }
             }
             continue;
         }
         if (isset($definition->info[$token->name])) {
             $type = $definition->info[$token->name]->child->type;
         } else {
             $type = false;
         }
         $ok = false;
         if ($type === 'empty' && $token instanceof HTMLPurifier_Token_Start) {
             $token = new HTMLPurifier_Token_Empty($token->name, $token->attr, $token->line, $token->col, $token->armor);
             $ok = true;
         } elseif ($type && $type !== 'empty' && $token instanceof HTMLPurifier_Token_Empty) {
             $old_token = $token;
             $token = new HTMLPurifier_Token_End($token->name);
             $token = $this->insertBefore(new HTMLPurifier_Token_Start($old_token->name, $old_token->attr, $old_token->line, $old_token->col, $old_token->armor));
             $reprocess = true;
             continue;
         } elseif ($token instanceof HTMLPurifier_Token_Empty) {
             $ok = true;
         } elseif ($token instanceof HTMLPurifier_Token_Start) {
             if (!empty($this->stack)) {
                 $parent = array_pop($this->stack);
                 $this->stack[] = $parent;
                 $parent_def = null;
                 $parent_elements = null;
                 $autoclose = false;
                 if (isset($definition->info[$parent->name])) {
                     $parent_def = $definition->info[$parent->name];
                     $parent_elements = $parent_def->child->getAllowedElements($config);
                     $autoclose = !isset($parent_elements[$token->name]);
                 }
                 if ($autoclose && $definition->info[$token->name]->wrap) {
                     $wrapname = $definition->info[$token->name]->wrap;
                     $wrapdef = $definition->info[$wrapname];
                     $elements = $wrapdef->child->getAllowedElements($config);
                     if (isset($elements[$token->name]) && isset($parent_elements[$wrapname])) {
                         $newtoken = new HTMLPurifier_Token_Start($wrapname);
                         $token = $this->insertBefore($newtoken);
                         $reprocess = true;
                         continue;
                     }
                 }
                 $carryover = false;
                 if ($autoclose && $parent_def->formatting) {
                     $carryover = true;
                 }
                 if ($autoclose) {
                     $autoclose_ok = isset($global_parent_allowed_elements[$token->name]);
                     if (!$autoclose_ok) {
                         foreach ($this->stack as $ancestor) {
                             $elements = $definition->info[$ancestor->name]->child->getAllowedElements($config);
                             if (isset($elements[$token->name])) {
                                 $autoclose_ok = true;
                                 break;
                             }
                             if ($definition->info[$token->name]->wrap) {
                                 $wrapname = $definition->info[$token->name]->wrap;
                                 $wrapdef = $definition->info[$wrapname];
                                 $wrap_elements = $wrapdef->child->getAllowedElements($config);
                                 if (isset($wrap_elements[$token->name]) && isset($elements[$wrapname])) {
                                     $autoclose_ok = true;
                                     break;
                                 }
                             }
                         }
                     }
                     if ($autoclose_ok) {
                         $new_token = new HTMLPurifier_Token_End($parent->name);
                         $new_token->start = $parent;
                         if ($e && !isset($parent->armor['MakeWellFormed_TagClosedError'])) {
                             if (!$carryover) {
                                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag auto closed', $parent);
                             } else {
                                 $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag carryover', $parent);
                             }
                         }
                         if ($carryover) {
                             $element = clone $parent;
                             $element->armor['MakeWellFormed_TagClosedError'] = true;
                             $element->carryover = true;
                             $token = $this->processToken(array($new_token, $token, $element));
                         } else {
                             $token = $this->insertBefore($new_token);
                         }
                     } else {
                         $token = $this->remove();
                     }
                     $reprocess = true;
                     continue;
                 }
             }
             $ok = true;
         }
         if ($ok) {
             foreach ($this->injectors as $i => $injector) {
                 if (isset($token->skip[$i])) {
                     continue;
                 }
                 if ($token->rewind !== null && $token->rewind !== $i) {
                     continue;
                 }
                 $r = $token;
                 $injector->handleElement($r);
                 $token = $this->processToken($r, $i);
                 $reprocess = true;
                 break;
             }
             if (!$reprocess) {
                 if ($token instanceof HTMLPurifier_Token_Start) {
                     $this->stack[] = $token;
                 } elseif ($token instanceof HTMLPurifier_Token_End) {
                     throw new HTMLPurifier_Exception('Improper handling of end tag in start code; possible error in MakeWellFormed');
                 }
             }
             continue;
         }
         if (!$token instanceof HTMLPurifier_Token_End) {
             throw new HTMLPurifier_Exception('Unaccounted for tag token in input stream, bug in HTML Purifier');
         }
         if (empty($this->stack)) {
             if ($escape_invalid_tags) {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag to text');
                 }
                 $token = new HTMLPurifier_Token_Text($generator->generateFromToken($token));
             } else {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Unnecessary end tag removed');
                 }
                 $token = $this->remove();
             }
             $reprocess = true;
             continue;
         }
         $current_parent = array_pop($this->stack);
         if ($current_parent->name == $token->name) {
             $token->start = $current_parent;
             foreach ($this->injectors as $i => $injector) {
                 if (isset($token->skip[$i])) {
                     continue;
                 }
                 if ($token->rewind !== null && $token->rewind !== $i) {
                     continue;
                 }
                 $r = $token;
                 $injector->handleEnd($r);
                 $token = $this->processToken($r, $i);
                 $this->stack[] = $current_parent;
                 $reprocess = true;
                 break;
             }
             continue;
         }
         $this->stack[] = $current_parent;
         $size = count($this->stack);
         $skipped_tags = false;
         for ($j = $size - 2; $j >= 0; $j--) {
             if ($this->stack[$j]->name == $token->name) {
                 $skipped_tags = array_slice($this->stack, $j);
                 break;
             }
         }
         if ($skipped_tags === false) {
             if ($escape_invalid_tags) {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag to text');
                 }
                 $token = new HTMLPurifier_Token_Text($generator->generateFromToken($token));
             } else {
                 if ($e) {
                     $e->send(E_WARNING, 'Strategy_MakeWellFormed: Stray end tag removed');
                 }
                 $token = $this->remove();
             }
             $reprocess = true;
             continue;
         }
         $c = count($skipped_tags);
         if ($e) {
             for ($j = $c - 1; $j > 0; $j--) {
                 if (!isset($skipped_tags[$j]->armor['MakeWellFormed_TagClosedError'])) {
                     $e->send(E_NOTICE, 'Strategy_MakeWellFormed: Tag closed by element end', $skipped_tags[$j]);
                 }
             }
         }
         $replace = array($token);
         for ($j = 1; $j < $c; $j++) {
             $new_token = new HTMLPurifier_Token_End($skipped_tags[$j]->name);
             $new_token->start = $skipped_tags[$j];
             array_unshift($replace, $new_token);
             if (isset($definition->info[$new_token->name]) && $definition->info[$new_token->name]->formatting) {
                 $element = clone $skipped_tags[$j];
                 $element->carryover = true;
                 $element->armor['MakeWellFormed_TagClosedError'] = true;
                 $replace[] = $element;
             }
         }
         $token = $this->processToken($replace);
         $reprocess = true;
         continue;
     }
     $context->destroy('CurrentToken');
     $context->destroy('CurrentNesting');
     $context->destroy('InputZipper');
     unset($this->injectors, $this->stack, $this->tokens);
     return $zipper->toArray($token);
 }