:arrow_up: :hammer: Upgrade Markdownify library.

The current version 2.0.0 (alpha) throws deprecated warning with
PHP7.1 and PHPUnit.
Upgrade the HTML to Markdown converter for PHP to the current
Markdownify 2.2.1.
Used composer to manage this library.

1 files changed, 0 insertions, 1197 deletions

diff --git a/library/markdownify/markdownify.php b/library/markdownify/markdownify.php
deleted file mode 100644
index 0d4429a01..000000000
--- a/library/markdownify/markdownify.php
+++ /dev/null
@@ -1,1197 +0,0 @@
-<?php
-/**
- * Markdownify converts HTML Markup to [Markdown][1] (by [John Gruber][2]. It
- * also supports [Markdown Extra][3] by [Michel Fortin][4] via Markdownify_Extra.
- *
- * It all started as `html2text.php` - a port of [Aaron Swartz'][5] [`html2text.py`][6] - but
- * got a long way since. This is far more than a mere port now!
- * Starting with version 2.0.0 this is a complete rewrite and cannot be
- * compared to Aaron Swatz' `html2text.py` anylonger. I'm now using a HTML parser
- * (see `parsehtml.php` which I also wrote) which makes most of the evil
- * RegEx magic go away and additionally it gives a much cleaner class
- * structure. Also notably is the fact that I now try to prevent regressions by
- * utilizing testcases of Michel Fortin's [MDTest][7].
- *
- * [1]: http://daringfireball.com/projects/markdown
- * [2]: http://daringfireball.com/
- * [3]: http://www.michelf.com/projects/php-markdown/extra/
- * [4]: http://www.michelf.com/
- * [5]: http://www.aaronsw.com/
- * [6]: http://www.aaronsw.com/2002/html2text/
- * [7]: http://article.gmane.org/gmane.text.markdown.general/2540
- *
- * @version 2.0.0 alpha
- * @author Milian Wolff (<mail@milianw.de>, <http://milianw.de>)
- * @license LGPL, see LICENSE_LGPL.txt and the summary below
- * @copyright (C) 2007  Milian Wolff
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-/**
- * HTML Parser, see http://sf.net/projects/parseHTML
- */
-require_once dirname(__FILE__).'/parsehtml/parsehtml.php';
-
-/**
- * default configuration
- */
-define('MDFY_LINKS_EACH_PARAGRAPH', false);
-define('MDFY_BODYWIDTH', false);
-define('MDFY_KEEPHTML', true);
-
-/**
- * HTML to Markdown converter class
- */
-class Markdownify {
-  /**
-   * html parser object
-   *
-   * @var parseHTML
-   */
-  var $parser;
-  /**
-   * markdown output
-   *
-   * @var string
-   */
-  var $output;
-  /**
-   * stack with tags which where not converted to html
-   *
-   * @var array<string>
-   */
-  var $notConverted = array();
-  /**
-   * skip conversion to markdown
-   *
-   * @var bool
-   */
-  var $skipConversion = false;
-  /* options */
-  /**
-   * keep html tags which cannot be converted to markdown
-   *
-   * @var bool
-   */
-  var $keepHTML = false;
-  /**
-   * wrap output, set to 0 to skip wrapping
-   *
-   * @var int
-   */
-  var $bodyWidth = 0;
-  /**
-   * minimum body width
-   *
-   * @var int
-   */
-  var $minBodyWidth = 25;
-  /**
-   * display links after each paragraph
-   *
-   * @var bool
-   */
-  var $linksAfterEachParagraph = false;
-  /**
-   * constructor, set options, setup parser
-   *
-   * @param bool $linksAfterEachParagraph wether or not to flush stacked links after each paragraph
-   *             defaults to false
-   * @param int $bodyWidth wether or not to wrap the output to the given width
-   *             defaults to false
-   * @param bool $keepHTML wether to keep non markdownable HTML or to discard it
-   *             defaults to true (HTML will be kept)
-   * @return void
-   */
-  function Markdownify($linksAfterEachParagraph = MDFY_LINKS_EACH_PARAGRAPH, $bodyWidth = MDFY_BODYWIDTH, $keepHTML = MDFY_KEEPHTML) {
-    $this->linksAfterEachParagraph = $linksAfterEachParagraph;
-    $this->keepHTML = $keepHTML;
-
-    if ($bodyWidth > $this->minBodyWidth) {
-      $this->bodyWidth = intval($bodyWidth);
-    } else {
-      $this->bodyWidth = false;
-    }
-
-    $this->parser = new parseHTML;
-    $this->parser->noTagsInCode = true;
-
-    # we don't have to do this every time
-    $search = array();
-    $replace = array();
-    foreach ($this->escapeInText as $s => $r) {
-      array_push($search, '#(?<!\\\)'.$s.'#U');
-      array_push($replace, $r);
-    }
-    $this->escapeInText = array(
-      'search' => $search,
-      'replace' => $replace
-    );
-  }
-  /**
-   * parse a HTML string
-   *
-   * @param string $html
-   * @return string markdown formatted
-   */
-  function parseString($html) {
-    $this->parser->html = $html;
-    $this->parse();
-    return $this->output;
-  }
-  /**
-   * tags with elements which can be handled by markdown
-   *
-   * @var array<string>
-   */
-  var $isMarkdownable = array(
-    'p' => array(),
-    'ul' => array(),
-    'ol' => array(),
-    'li' => array(),
-    'br' => array(),
-    'blockquote' => array(),
-    'code' => array(),
-    'pre' => array(),
-    'a' => array(
-      'href' => 'required',
-      'title' => 'optional',
-    ),
-    'strong' => array(),
-    'b' => array(),
-    'em' => array(),
-    'i' => array(),
-    'img' => array(
-      'src' => 'required',
-      'alt' => 'optional',
-      'title' => 'optional',
-    ),
-    'h1' => array(),
-    'h2' => array(),
-    'h3' => array(),
-    'h4' => array(),
-    'h5' => array(),
-    'h6' => array(),
-    'hr' => array(),
-  );
-  /**
-   * html tags to be ignored (contents will be parsed)
-   *
-   * @var array<string>
-   */
-  var $ignore = array(
-    'html',
-    'body',
-  );
-  /**
-   * html tags to be dropped (contents will not be parsed!)
-   *
-   * @var array<string>
-   */
-  var $drop = array(
-    'script',
-    'head',
-    'style',
-    'form',
-    'area',
-    'object',
-    'param',
-    'iframe',
-  );
-  /**
-   * Markdown indents which could be wrapped
-   * @note: use strings in regex format
-   *
-   * @var array<string>
-   */
-  var $wrappableIndents = array(
-    '\*   ', # ul
-    '\d.  ', # ol
-    '\d\d. ', # ol
-    '> ', # blockquote
-    '', # p
-  );
-  /**
-   * list of chars which have to be escaped in normal text
-   * @note: use strings in regex format
-   *
-   * @var array
-   *
-   * TODO: what's with block chars / sequences at the beginning of a block?
-   */
-  var $escapeInText = array(
-    '([-*_])([ ]{0,2}\1){2,}' => '\\\\$0|', # hr
-    '\*\*([^*\s]+)\*\*' => '\*\*$1\*\*', # strong
-    '\*([^*\s]+)\*' => '\*$1\*', # em
-    '__(?! |_)(.+)(?!<_| )__' => '\_\_$1\_\_', # em
-    '_(?! |_)(.+)(?!<_| )_' => '\_$1\_', # em
-    '`(.+)`' => '\`$1\`', # code
-    '\[(.+)\](\s*\()' => '\[$1\]$2', # links: [text] (url) => [text\] (url)
-    '\[(.+)\](\s*)\[(.*)\]' => '\[$1\]$2\[$3\]', # links: [text][id] => [text\][id\]
-  );
-  /**
-   * wether last processed node was a block tag or not
-   *
-   * @var bool
-   */
-  var $lastWasBlockTag = false;
-  /**
-   * name of last closed tag
-   *
-   * @var string
-   */
-  var $lastClosedTag = '';
-  /**
-   * iterate through the nodes and decide what we
-   * shall do with the current node
-   *
-   * @param void
-   * @return void
-   */
-  function parse() {
-    $this->output = '';
-    # drop tags
-    $this->parser->html = preg_replace('#<('.implode('|', $this->drop).')[^>]*>.*</\\1>#sU', '', $this->parser->html);
-    while ($this->parser->nextNode()) {
-      switch ($this->parser->nodeType) {
-        case 'doctype':
-          break;
-        case 'pi':
-        case 'comment':
-          if ($this->keepHTML) {
-            $this->flushLinebreaks();
-            $this->out($this->parser->node);
-            $this->setLineBreaks(2);
-          }
-          # else drop
-          break;
-        case 'text':
-          $this->handleText();
-          break;
-        case 'tag':
-          if (in_array($this->parser->tagName, $this->ignore)) {
-            break;
-          }
-          if ($this->parser->isStartTag) {
-            $this->flushLinebreaks();
-          }
-          if ($this->skipConversion) {
-            $this->isMarkdownable(); # update notConverted
-            $this->handleTagToText();
-            continue;
-          }
-          if (!$this->parser->keepWhitespace && $this->parser->isBlockElement && $this->parser->isStartTag) {
-            $this->parser->html = ltrim($this->parser->html);
-          }
-          if ($this->isMarkdownable()) {
-            if ($this->parser->isBlockElement && $this->parser->isStartTag && !$this->lastWasBlockTag && !empty($this->output)) {
-              if (!empty($this->buffer)) {
-                $str =& $this->buffer[count($this->buffer) -1];
-              } else {
-                $str =& $this->output;
-              }
-              if (substr($str, -strlen($this->indent)-1) != "\n".$this->indent) {
-                $str .= "\n".$this->indent;
-              }
-            }
-            $func = 'handleTag_'.$this->parser->tagName;
-            $this->$func();
-            if ($this->linksAfterEachParagraph && $this->parser->isBlockElement && !$this->parser->isStartTag && empty($this->parser->openTags)) {
-              $this->flushStacked();
-            }
-            if (!$this->parser->isStartTag) {
-              $this->lastClosedTag = $this->parser->tagName;
-            }
-          } else {
-            $this->handleTagToText();
-            $this->lastClosedTag = '';
-          }
-          break;
-        default:
-          trigger_error('invalid node type', E_USER_ERROR);
-          break;
-      }
-      $this->lastWasBlockTag = $this->parser->nodeType == 'tag' && $this->parser->isStartTag && $this->parser->isBlockElement;
-    }
-    if (!empty($this->buffer)) {
-      trigger_error('buffer was not flushed, this is a bug. please report!', E_USER_WARNING);
-      while (!empty($this->buffer)) {
-        $this->out($this->unbuffer());
-      }
-    }
-    ### cleanup
-    $this->output = rtrim(str_replace('&amp;', '&', str_replace('&lt;', '<', str_replace('&gt;', '>', $this->output))));
-    # end parsing, flush stacked tags
-    $this->flushStacked();
-    $this->stack = array();
-  }
-  /**
-   * check if current tag can be converted to Markdown
-   *
-   * @param void
-   * @return bool
-   */
-  function isMarkdownable() {
-    if (!isset($this->isMarkdownable[$this->parser->tagName])) {
-      # simply not markdownable
-      return false;
-    }
-    if ($this->parser->isStartTag) {
-      $return = true;
-      if ($this->keepHTML) {
-        $diff = array_diff(array_keys($this->parser->tagAttributes), array_keys($this->isMarkdownable[$this->parser->tagName]));
-        if (!empty($diff)) {
-          # non markdownable attributes given
-          $return = false;
-        }
-      }
-      if ($return) {
-        foreach ($this->isMarkdownable[$this->parser->tagName] as $attr => $type) {
-          if ($type == 'required' && !isset($this->parser->tagAttributes[$attr])) {
-            # required markdown attribute not given
-            $return = false;
-            break;
-          }
-        }
-      }
-      if (!$return) {
-        array_push($this->notConverted, $this->parser->tagName.'::'.implode('/', $this->parser->openTags));
-      }
-      return $return;
-    } else {
-      if (!empty($this->notConverted) && end($this->notConverted) === $this->parser->tagName.'::'.implode('/', $this->parser->openTags)) {
-        array_pop($this->notConverted);
-        return false;
-      }
-      return true;
-    }
-  }
-  /**
-   * output all stacked tags
-   *
-   * @param void
-   * @return void
-   */
-  function flushStacked() {
-    # links
-    foreach ($this->stack as $tag => $a) {
-      if (!empty($a)) {
-        call_user_func(array(&$this, 'flushStacked_'.$tag));
-      }
-    }
-  }
-  /**
-   * output link references (e.g. [1]: http://example.com "title");
-   *
-   * @param void
-   * @return void
-   */
-  function flushStacked_a() {
-    $out = false;
-    foreach ($this->stack['a'] as $k => $tag) {
-      if (!isset($tag['unstacked'])) {
-        if (!$out) {
-          $out = true;
-          $this->out("\n\n", true);
-        } else {
-          $this->out("\n", true);
-        }
-        $this->out(' ['.$tag['linkID'].']: '.$tag['href'].(isset($tag['title']) ? ' "'.$tag['title'].'"' : ''), true);
-        $tag['unstacked'] = true;
-        $this->stack['a'][$k] = $tag;
-      }
-    }
-  }
-  /**
-   * flush enqued linebreaks
-   *
-   * @param void
-   * @return void
-   */
-  function flushLinebreaks() {
-    if ($this->lineBreaks && !empty($this->output)) {
-      $this->out(str_repeat("\n".$this->indent, $this->lineBreaks), true);
-    }
-    $this->lineBreaks = 0;
-  }
-  /**
-   * handle non Markdownable tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTagToText() {
-    if (!$this->keepHTML) {
-      if (!$this->parser->isStartTag && $this->parser->isBlockElement) {
-        $this->setLineBreaks(2);
-      }
-    } else {
-      # dont convert to markdown inside this tag
-      /** TODO: markdown extra **/
-      if (!$this->parser->isEmptyTag) {
-        if ($this->parser->isStartTag) {
-          if (!$this->skipConversion) {
-            $this->skipConversion = $this->parser->tagName.'::'.implode('/', $this->parser->openTags);
-          }
-        } else {
-          if ($this->skipConversion == $this->parser->tagName.'::'.implode('/', $this->parser->openTags)) {
-            $this->skipConversion = false;
-          }
-        }
-      }
-
-      if ($this->parser->isBlockElement) {
-        if ($this->parser->isStartTag) {
-          if (in_array($this->parent(), array('ins', 'del'))) {
-            # looks like ins or del are block elements now
-            $this->out("\n", true);
-            $this->indent('  ');
-          }
-          if ($this->parser->tagName != 'pre') {
-            $this->out($this->parser->node."\n".$this->indent);
-            if (!$this->parser->isEmptyTag) {
-              $this->indent('  ');
-            } else {
-              $this->setLineBreaks(1);
-            }
-            $this->parser->html = ltrim($this->parser->html);
-          } else {
-            # don't indent inside <pre> tags
-            $this->out($this->parser->node);
-            static $indent;
-            $indent =  $this->indent;
-            $this->indent = '';
-          }
-        } else {
-          if (!$this->parser->keepWhitespace) {
-            $this->output = rtrim($this->output);
-          }
-          if ($this->parser->tagName != 'pre') {
-            $this->indent('  ');
-            $this->out("\n".$this->indent.$this->parser->node);
-          } else {
-            # reset indentation
-            $this->out($this->parser->node);
-            static $indent;
-            $this->indent = $indent;
-          }
-
-          if (in_array($this->parent(), array('ins', 'del'))) {
-            # ins or del was block element
-            $this->out("\n");
-            $this->indent('  ');
-          }
-          if ($this->parser->tagName == 'li') {
-            $this->setLineBreaks(1);
-          } else {
-            $this->setLineBreaks(2);
-          }
-        }
-      } else {
-        $this->out($this->parser->node);
-      }
-      if (in_array($this->parser->tagName, array('code', 'pre'))) {
-        if ($this->parser->isStartTag) {
-          $this->buffer();
-        } else {
-          # add stuff so cleanup just reverses this
-          $this->out(str_replace('&lt;', '&amp;lt;', str_replace('&gt;', '&amp;gt;', $this->unbuffer())));
-        }
-      }
-    }
-  }
-  /**
-   * handle plain text
-   *
-   * @param void
-   * @return void
-   */
-  function handleText() {
-    if ($this->hasParent('pre') && strpos($this->parser->node, "\n") !== false) {
-      $this->parser->node = str_replace("\n", "\n".$this->indent, $this->parser->node);
-    }
-    if (!$this->hasParent('code') && !$this->hasParent('pre')) {
-      # entity decode
-      $this->parser->node = $this->decode($this->parser->node);
-      if (!$this->skipConversion) {
-        # escape some chars in normal Text
-        $this->parser->node = preg_replace($this->escapeInText['search'], $this->escapeInText['replace'], $this->parser->node);
-      }
-    } else {
-      $this->parser->node = str_replace(array('&quot;', '&apos'), array('"', '\''), $this->parser->node);
-    }
-    $this->out($this->parser->node);
-    $this->lastClosedTag = '';
-  }
-  /**
-   * handle <em> and <i> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_em() {
-    $this->out('*', true);
-  }
-  function handleTag_i() {
-    $this->handleTag_em();
-  }
-  /**
-   * handle <strong> and <b> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_strong() {
-    $this->out('**', true);
-  }
-  function handleTag_b() {
-    $this->handleTag_strong();
-  }
-  /**
-   * handle <h1> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h1() {
-    $this->handleHeader(1);
-  }
-  /**
-   * handle <h2> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h2() {
-    $this->handleHeader(2);
-  }
-  /**
-   * handle <h3> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h3() {
-    $this->handleHeader(3);
-  }
-  /**
-   * handle <h4> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h4() {
-    $this->handleHeader(4);
-  }
-  /**
-   * handle <h5> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h5() {
-    $this->handleHeader(5);
-  }
-  /**
-   * handle <h6> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_h6() {
-    $this->handleHeader(6);
-  }
-  /**
-   * number of line breaks before next inline output
-   */
-  var $lineBreaks = 0;
-  /**
-   * handle header tags (<h1> - <h6>)
-   *
-   * @param int $level 1-6
-   * @return void
-   */
-  function handleHeader($level) {
-    if ($this->parser->isStartTag) {
-      $this->out(str_repeat('#', $level).' ', true);
-    } else {
-      $this->setLineBreaks(2);
-    }
-  }
-  /**
-   * handle <p> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_p() {
-    if (!$this->parser->isStartTag) {
-      $this->setLineBreaks(2);
-    }
-  }
-  /**
-   * handle <a> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_a() {
-    if ($this->parser->isStartTag) {
-      $this->buffer();
-      if (isset($this->parser->tagAttributes['title'])) {
-        $this->parser->tagAttributes['title'] = $this->decode($this->parser->tagAttributes['title']);
-      } else {
-        $this->parser->tagAttributes['title'] = null;
-      }
-      $this->parser->tagAttributes['href'] = $this->decode(trim($this->parser->tagAttributes['href']));
-      $this->stack();
-    } else {
-      $tag = $this->unstack();
-      $buffer = $this->unbuffer();
-
-      if (empty($tag['href']) && empty($tag['title'])) {
-        # empty links... testcase mania, who would possibly do anything like that?!
-        $this->out('['.$buffer.']()', true);
-        return;
-      }
-
-      if ($buffer == $tag['href'] && empty($tag['title'])) {
-        # <http://example.com>
-        $this->out('<'.$buffer.'>', true);
-        return;
-      }
-
-      $bufferDecoded = $this->decode(trim($buffer));
-      if (substr($tag['href'], 0, 7) == 'mailto:' && 'mailto:'.$bufferDecoded == $tag['href']) {
-        if (is_null($tag['title'])) {
-          # <mail@example.com>
-          $this->out('<'.$bufferDecoded.'>', true);
-          return;
-        }
-        # [mail@example.com][1]
-        # ...
-        #  [1]: mailto:mail@example.com Title
-        $tag['href'] = 'mailto:'.$bufferDecoded;
-      }
-
-      $this->out('['.$buffer.']('.$tag['href'].' "'.$tag['title'].'")', true);
-
-/*
-      # [This link][id]
-      foreach ($this->stack['a'] as $tag2) {
-        if ($tag2['href'] == $tag['href'] && $tag2['title'] === $tag['title']) {
-          $tag['linkID'] = $tag2['linkID'];
-          break;
-        }
-      }
-      if (!isset($tag['linkID'])) {
-        $tag['linkID'] = count($this->stack['a']) + 1;
-        array_push($this->stack['a'], $tag);
-      }
-
-      $this->out('['.$buffer.']['.$tag['linkID'].']', true);
-*/
-    }
-  }
-  /**
-   * handle <img /> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_img() {
-    if (!$this->parser->isStartTag) {
-      return; # just to be sure this is really an empty tag...
-    }
-
-    if (isset($this->parser->tagAttributes['title'])) {
-      $this->parser->tagAttributes['title'] = $this->decode($this->parser->tagAttributes['title']);
-    } else {
-      $this->parser->tagAttributes['title'] = null;
-    }
-    if (isset($this->parser->tagAttributes['alt'])) {
-      $this->parser->tagAttributes['alt'] = $this->decode($this->parser->tagAttributes['alt']);
-    } else {
-      $this->parser->tagAttributes['alt'] = null;
-    }
-
-    if (empty($this->parser->tagAttributes['src'])) {
-      # support for "empty" images... dunno if this is really needed
-      # but there are some testcases which do that...
-      if (!empty($this->parser->tagAttributes['title'])) {
-        $this->parser->tagAttributes['title'] = ' '.$this->parser->tagAttributes['title'].' ';
-      }
-      $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['title'].')', true);
-      return;
-    } else {
-      $this->parser->tagAttributes['src'] = $this->decode($this->parser->tagAttributes['src']);
-    }
-
-// ![Alt text](/path/to/img.jpg "Optional title")
-    if ($this->parser->tagAttributes['title'] != "")
-      $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['src'].' "'.$this->parser->tagAttributes['title'].'")', true);
-    else
-      $this->out('!['.$this->parser->tagAttributes['alt'].']('.$this->parser->tagAttributes['src'].')', true);
-
-/*
-    # [This link][id]
-    $link_id = false;
-    if (!empty($this->stack['a'])) {
-      foreach ($this->stack['a'] as $tag) {
-        if ($tag['href'] == $this->parser->tagAttributes['src']
-            && $tag['title'] === $this->parser->tagAttributes['title']) {
-          $link_id = $tag['linkID'];
-          break;
-        }
-      }
-    } else {
-      $this->stack['a'] = array();
-    }
-    if (!$link_id) {
-      $link_id = count($this->stack['a']) + 1;
-      $tag = array(
-        'href' => $this->parser->tagAttributes['src'],
-        'linkID' => $link_id,
-        'title' => $this->parser->tagAttributes['title']
-      );
-      array_push($this->stack['a'], $tag);
-    }
-
-    $this->out('!['.$this->parser->tagAttributes['alt'].']['.$link_id.']', true);
-*/
-  }
-  /**
-   * handle <code> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_code() {
-    if ($this->hasParent('pre')) {
-      # ignore code blocks inside <pre>
-      return;
-    }
-    if ($this->parser->isStartTag) {
-      $this->buffer();
-    } else {
-      $buffer = $this->unbuffer();
-      # use as many backticks as needed
-      preg_match_all('#`+#', $buffer, $matches);
-      if (!empty($matches[0])) {
-        rsort($matches[0]);
-
-        $ticks = '`';
-        while (true) {
-          if (!in_array($ticks, $matches[0])) {
-            break;
-          }
-          $ticks .= '`';
-        }
-      } else {
-        $ticks = '`';
-      }
-      if ($buffer[0] == '`' || substr($buffer, -1) == '`') {
-        $buffer = ' '.$buffer.' ';
-      }
-      $this->out($ticks.$buffer.$ticks, true);
-    }
-  }
-  /**
-   * handle <pre> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_pre() {
-    if ($this->keepHTML && $this->parser->isStartTag) {
-      # check if a simple <code> follows
-      if (!preg_match('#^\s*<code\s*>#Us', $this->parser->html)) {
-        # this is no standard markdown code block
-        $this->handleTagToText();
-        return;
-      }
-    }
-    $this->indent('    ');
-    if (!$this->parser->isStartTag) {
-      $this->setLineBreaks(2);
-    } else {
-      $this->parser->html = ltrim($this->parser->html);
-    }
-  }
-  /**
-   * handle <blockquote> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_blockquote() {
-    $this->indent('> ');
-  }
-  /**
-   * handle <ul> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_ul() {
-    if ($this->parser->isStartTag) {
-      $this->stack();
-      if (!$this->keepHTML && $this->lastClosedTag == $this->parser->tagName) {
-        $this->out("\n".$this->indent.'<!-- -->'."\n".$this->indent."\n".$this->indent);
-      }
-    } else {
-      $this->unstack();
-      if ($this->parent() != 'li' || preg_match('#^\s*(</li\s*>\s*<li\s*>\s*)?<(p|blockquote)\s*>#sU', $this->parser->html)) {
-        # dont make Markdown add unneeded paragraphs
-        $this->setLineBreaks(2);
-      }
-    }
-  }
-  /**
-   * handle <ul> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_ol() {
-    # same as above
-    $this->parser->tagAttributes['num'] = 0;
-    $this->handleTag_ul();
-  }
-  /**
-   * handle <li> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_li() {
-    if ($this->parent() == 'ol') {
-      $parent =& $this->getStacked('ol');
-      if ($this->parser->isStartTag) {
-        $parent['num']++;
-        $this->out($parent['num'].'.'.str_repeat(' ', 3 - strlen($parent['num'])), true);
-      }
-      $this->indent('    ', false);
-    } else {
-      if ($this->parser->isStartTag) {
-        $this->out('*   ', true);
-      }
-      $this->indent('    ', false);
-    }
-    if (!$this->parser->isStartTag) {
-      $this->setLineBreaks(1);
-    }
-  }
-  /**
-   * handle <hr /> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_hr() {
-    if (!$this->parser->isStartTag) {
-      return; # just to be sure this really is an empty tag
-    }
-    $this->out('* * *', true);
-    $this->setLineBreaks(2);
-  }
-  /**
-   * handle <br /> tags
-   *
-   * @param void
-   * @return void
-   */
-  function handleTag_br() {
-    $this->out("  \n".$this->indent, true);
-    $this->parser->html = ltrim($this->parser->html);
-  }
-  /**
-   * node stack, e.g. for <a> and <abbr> tags
-   *
-   * @var array<array>
-   */
-  var $stack = array();
-  /**
-   * add current node to the stack
-   * this only stores the attributes
-   *
-   * @param void
-   * @return void
-   */
-  function stack() {
-    if (!isset($this->stack[$this->parser->tagName])) {
-      $this->stack[$this->parser->tagName] = array();
-    }
-    array_push($this->stack[$this->parser->tagName], $this->parser->tagAttributes);
-  }
-  /**
-   * remove current tag from stack
-   *
-   * @param void
-   * @return array
-   */
-  function unstack() {
-    if (!isset($this->stack[$this->parser->tagName]) || !is_array($this->stack[$this->parser->tagName])) {
-      trigger_error('Trying to unstack from empty stack. This must not happen.', E_USER_ERROR);
-    }
-    return array_pop($this->stack[$this->parser->tagName]);
-  }
-  /**
-   * get last stacked element of type $tagName
-   *
-   * @param string $tagName
-   * @return array
-   */
-  function & getStacked($tagName) {
-    // no end() so it can be referenced
-    return $this->stack[$tagName][count($this->stack[$tagName])-1];
-  }
-  /**
-   * set number of line breaks before next start tag
-   *
-   * @param int $number
-   * @return void
-   */
-  function setLineBreaks($number) {
-    if ($this->lineBreaks < $number) {
-      $this->lineBreaks = $number;
-    }
-  }
-  /**
-   * stores current buffers
-   *
-   * @var array<string>
-   */
-  var $buffer = array();
-  /**
-   * buffer next parser output until unbuffer() is called
-   *
-   * @param void
-   * @return void
-   */
-  function buffer() {
-    array_push($this->buffer, '');
-  }
-  /**
-   * end current buffer and return buffered output
-   *
-   * @param void
-   * @return string
-   */
-  function unbuffer() {
-    return array_pop($this->buffer);
-  }
-  /**
-   * append string to the correct var, either
-   * directly to $this->output or to the current
-   * buffers
-   *
-   * @param string $put
-   * @return void
-   */
-  function out($put, $nowrap = false) {
-    if (empty($put)) {
-      return;
-    }
-    if (!empty($this->buffer)) {
-      $this->buffer[count($this->buffer) - 1] .= $put;
-    } else {
-      if ($this->bodyWidth && !$this->parser->keepWhitespace) { # wrap lines
-        // get last line
-        $pos = strrpos($this->output, "\n");
-        if ($pos === false) {
-          $line = $this->output;
-        } else {
-          $line = substr($this->output, $pos);
-        }
-
-        if ($nowrap) {
-          if ($put[0] != "\n" && $this->strlen($line) + $this->strlen($put) > $this->bodyWidth) {
-            $this->output .= "\n".$this->indent.$put;
-          } else {
-            $this->output .= $put;
-          }
-          return;
-        } else {
-          $put .= "\n"; # make sure we get all lines in the while below
-          $lineLen = $this->strlen($line);
-          while ($pos = strpos($put, "\n")) {
-            $putLine = substr($put, 0, $pos+1);
-            $put = substr($put, $pos+1);
-            $putLen = $this->strlen($putLine);
-            if ($lineLen + $putLen < $this->bodyWidth) {
-              $this->output .= $putLine;
-              $lineLen = $putLen;
-            } else {
-              $split = preg_split('#^(.{0,'.($this->bodyWidth - $lineLen).'})\b#', $putLine, 2, PREG_SPLIT_OFFSET_CAPTURE | PREG_SPLIT_DELIM_CAPTURE);
-              $this->output .= rtrim($split[1][0])."\n".$this->indent.$this->wordwrap(ltrim($split[2][0]), $this->bodyWidth, "\n".$this->indent, false);
-            }
-          }
-          $this->output = substr($this->output, 0, -1);
-          return;
-        }
-      } else {
-        $this->output .= $put;
-      }
-    }
-  }
-  /**
-   * current indentation
-   *
-   * @var string
-   */
-  var $indent = '';
-  /**
-   * indent next output (start tag) or unindent (end tag)
-   *
-   * @param string $str indentation
-   * @param bool $output add indendation to output
-   * @return void
-   */
-  function indent($str, $output = true) {
-    if ($this->parser->isStartTag) {
-      $this->indent .= $str;
-      if ($output) {
-        $this->out($str, true);
-      }
-    } else {
-      $this->indent = substr($this->indent, 0, -strlen($str));
-    }
-  }
-  /**
-   * decode email addresses
-   *
-   * @author derernst@gmx.ch <http://www.php.net/manual/en/function.html-entity-decode.php#68536>
-   * @author Milian Wolff <http://milianw.de>
-   */
-  function decode($text, $quote_style = ENT_QUOTES) {
-    if (version_compare(PHP_VERSION, '5', '>=')) {
-      # UTF-8 is only supported in PHP 5.x.x and above
-      $text = html_entity_decode($text, $quote_style, 'UTF-8');
-    } else {
-      if (function_exists('html_entity_decode')) {
-        $text = html_entity_decode($text, $quote_style, 'ISO-8859-1');
-      } else {
-        static $trans_tbl;
-        if (!isset($trans_tbl)) {
-          $trans_tbl = array_flip(get_html_translation_table(HTML_ENTITIES, $quote_style));
-        }
-        $text = strtr($text, $trans_tbl);
-      }
-      $text = preg_replace_callback('~&#x([0-9a-f]+);~i', array(&$this, '_decode_hex'), $text);
-      $text = preg_replace_callback('~&#(\d{2,5});~', array(&$this, '_decode_numeric'), $text);
-    }
-    return $text;
-  }
-  /**
-   * callback for decode() which converts a hexadecimal entity to UTF-8
-   *
-   * @param array $matches
-   * @return string UTF-8 encoded
-   */
-  function _decode_hex($matches) {
-    return $this->unichr(hexdec($matches[1]));
-  }
-  /**
-   * callback for decode() which converts a numerical entity to UTF-8
-   *
-   * @param array $matches
-   * @return string UTF-8 encoded
-   */
-  function _decode_numeric($matches) {
-    return $this->unichr($matches[1]);
-  }
-  /**
-   * UTF-8 chr() which supports numeric entities
-   *
-   * @author grey - greywyvern - com <http://www.php.net/manual/en/function.chr.php#55978>
-   * @param array $matches
-   * @return string UTF-8 encoded
-   */
-  function unichr($dec) {
-    if ($dec < 128) {
-      $utf = chr($dec);
-    } else if ($dec < 2048) {
-      $utf = chr(192 + (($dec - ($dec % 64)) / 64));
-      $utf .= chr(128 + ($dec % 64));
-    } else {
-      $utf = chr(224 + (($dec - ($dec % 4096)) / 4096));
-      $utf .= chr(128 + ((($dec % 4096) - ($dec % 64)) / 64));
-      $utf .= chr(128 + ($dec % 64));
-    }
-    return $utf;
-  }
-  /**
-   * UTF-8 strlen()
-   *
-   * @param string $str
-   * @return int
-   *
-   * @author dtorop 932 at hotmail dot com <http://www.php.net/manual/en/function.strlen.php#37975>
-   * @author Milian Wolff <http://milianw.de>
-   */
-  function strlen($str) {
-    if (function_exists('mb_strlen')) {
-      return mb_strlen($str, 'UTF-8');
-    } else {
-      return preg_match_all('/[\x00-\x7F\xC0-\xFD]/', $str, $var_empty);
-    }
-  }
-  /**
-  * wordwrap for utf8 encoded strings
-  *
-  * @param string $str
-  * @param integer $len
-  * @param string $what
-  * @return string
-  */
-  function wordwrap($str, $width, $break, $cut = false){
-    if (!$cut) {
-      $regexp = '#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){1,'.$width.'}\b#';
-    } else {
-      $regexp = '#^(?:[\x00-\x7F]|[\xC0-\xFF][\x80-\xBF]+){'.$width.'}#';
-    }
-    $return = '';
-    while (preg_match($regexp, $str, $matches)) {
-      $string = $matches[0];
-      $str = ltrim(substr($str, strlen($string)));
-      if (!$cut && isset($str[0]) && in_array($str[0], array('.', '!', ';', ':', '?', ','))) {
-        $string .= $str[0];
-        $str = ltrim(substr($str, 1));
-      }
-      $return .= $string.$break;
-    }
-    return $return.ltrim($str);
-  }
-  /**
-   * check if current node has a $tagName as parent (somewhere, not only the direct parent)
-   *
-   * @param string $tagName
-   * @return bool
-   */
-  function hasParent($tagName) {
-    return in_array($tagName, $this->parser->openTags);
-  }
-  /**
-   * get tagName of direct parent tag
-   *
-   * @param void
-   * @return string $tagName
-   */
-  function parent() {
-    return end($this->parser->openTags);
-  }
-}