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-rw-r--r--library/parsedown/LICENSE.txt20
-rw-r--r--library/parsedown/Parsedown.php1540
-rw-r--r--library/parsedown/README.md55
-rw-r--r--library/parsedown/phpunit.xml.dist8
-rw-r--r--library/parsedown/test/CommonMarkTest.php74
-rw-r--r--library/parsedown/test/ParsedownTest.php159
-rw-r--r--library/parsedown/test/TestParsedown.php5
-rw-r--r--library/parsedown/test/bootstrap.php3
-rw-r--r--library/parsedown/test/data/aesthetic_table.html18
-rw-r--r--library/parsedown/test/data/aesthetic_table.md4
-rw-r--r--library/parsedown/test/data/aligned_table.html21
-rw-r--r--library/parsedown/test/data/aligned_table.md4
-rw-r--r--library/parsedown/test/data/atx_heading.html9
-rw-r--r--library/parsedown/test/data/atx_heading.md17
-rw-r--r--library/parsedown/test/data/automatic_link.html1
-rw-r--r--library/parsedown/test/data/automatic_link.md1
-rw-r--r--library/parsedown/test/data/block-level_html.html12
-rw-r--r--library/parsedown/test/data/block-level_html.md16
-rw-r--r--library/parsedown/test/data/code_block.html8
-rw-r--r--library/parsedown/test/data/code_block.md10
-rw-r--r--library/parsedown/test/data/code_span.html6
-rw-r--r--library/parsedown/test/data/code_span.md11
-rw-r--r--library/parsedown/test/data/compound_blockquote.html9
-rw-r--r--library/parsedown/test/data/compound_blockquote.md10
-rw-r--r--library/parsedown/test/data/compound_emphasis.html2
-rw-r--r--library/parsedown/test/data/compound_emphasis.md4
-rw-r--r--library/parsedown/test/data/compound_list.html12
-rw-r--r--library/parsedown/test/data/compound_list.md7
-rw-r--r--library/parsedown/test/data/deeply_nested_list.html12
-rw-r--r--library/parsedown/test/data/deeply_nested_list.md6
-rw-r--r--library/parsedown/test/data/em_strong.html8
-rw-r--r--library/parsedown/test/data/em_strong.md15
-rw-r--r--library/parsedown/test/data/email.html1
-rw-r--r--library/parsedown/test/data/email.md1
-rw-r--r--library/parsedown/test/data/emphasis.html8
-rw-r--r--library/parsedown/test/data/emphasis.md13
-rw-r--r--library/parsedown/test/data/escaping.html6
-rw-r--r--library/parsedown/test/data/escaping.md11
-rw-r--r--library/parsedown/test/data/fenced_code_block.html6
-rw-r--r--library/parsedown/test/data/fenced_code_block.md14
-rw-r--r--library/parsedown/test/data/horizontal_rule.html5
-rw-r--r--library/parsedown/test/data/horizontal_rule.md9
-rw-r--r--library/parsedown/test/data/html_comment.html5
-rw-r--r--library/parsedown/test/data/html_comment.md8
-rw-r--r--library/parsedown/test/data/html_entity.html1
-rw-r--r--library/parsedown/test/data/html_entity.md1
-rw-r--r--library/parsedown/test/data/image_reference.html2
-rw-r--r--library/parsedown/test/data/image_reference.md5
-rw-r--r--library/parsedown/test/data/image_title.html2
-rw-r--r--library/parsedown/test/data/image_title.md3
-rw-r--r--library/parsedown/test/data/implicit_reference.html4
-rw-r--r--library/parsedown/test/data/implicit_reference.md13
-rw-r--r--library/parsedown/test/data/inline_link.html6
-rw-r--r--library/parsedown/test/data/inline_link.md11
-rw-r--r--library/parsedown/test/data/inline_link_title.html6
-rw-r--r--library/parsedown/test/data/inline_link_title.md11
-rw-r--r--library/parsedown/test/data/inline_title.html1
-rw-r--r--library/parsedown/test/data/inline_title.md1
-rw-r--r--library/parsedown/test/data/lazy_blockquote.html6
-rw-r--r--library/parsedown/test/data/lazy_blockquote.md5
-rw-r--r--library/parsedown/test/data/lazy_list.html4
-rw-r--r--library/parsedown/test/data/lazy_list.md2
-rw-r--r--library/parsedown/test/data/line_break.html2
-rw-r--r--library/parsedown/test/data/line_break.md2
-rw-r--r--library/parsedown/test/data/multiline_list_paragraph.html7
-rw-r--r--library/parsedown/test/data/multiline_list_paragraph.md4
-rw-r--r--library/parsedown/test/data/nested_block-level_html.html10
-rw-r--r--library/parsedown/test/data/nested_block-level_html.md11
-rw-r--r--library/parsedown/test/data/ordered_list.html13
-rw-r--r--library/parsedown/test/data/ordered_list.md11
-rw-r--r--library/parsedown/test/data/paragraph_list.html12
-rw-r--r--library/parsedown/test/data/paragraph_list.md9
-rw-r--r--library/parsedown/test/data/reference_title.html2
-rw-r--r--library/parsedown/test/data/reference_title.md6
-rw-r--r--library/parsedown/test/data/self-closing_html.html12
-rw-r--r--library/parsedown/test/data/self-closing_html.md12
-rw-r--r--library/parsedown/test/data/separated_nested_list.html9
-rw-r--r--library/parsedown/test/data/separated_nested_list.md4
-rw-r--r--library/parsedown/test/data/setext_header.html5
-rw-r--r--library/parsedown/test/data/setext_header.md12
-rw-r--r--library/parsedown/test/data/simple_blockquote.html11
-rw-r--r--library/parsedown/test/data/simple_blockquote.md7
-rw-r--r--library/parsedown/test/data/simple_table.html37
-rw-r--r--library/parsedown/test/data/simple_table.md11
-rw-r--r--library/parsedown/test/data/span-level_html.html5
-rw-r--r--library/parsedown/test/data/span-level_html.md8
-rw-r--r--library/parsedown/test/data/sparse_dense_list.html7
-rw-r--r--library/parsedown/test/data/sparse_dense_list.md4
-rw-r--r--library/parsedown/test/data/sparse_html.html8
-rw-r--r--library/parsedown/test/data/sparse_html.md8
-rw-r--r--library/parsedown/test/data/sparse_list.html15
-rw-r--r--library/parsedown/test/data/sparse_list.md9
-rw-r--r--library/parsedown/test/data/special_characters.html6
-rw-r--r--library/parsedown/test/data/special_characters.md13
-rw-r--r--library/parsedown/test/data/strikethrough.html3
-rw-r--r--library/parsedown/test/data/strikethrough.md5
-rw-r--r--library/parsedown/test/data/strong_em.html6
-rw-r--r--library/parsedown/test/data/strong_em.md11
-rw-r--r--library/parsedown/test/data/tab-indented_code_block.html6
-rw-r--r--library/parsedown/test/data/tab-indented_code_block.md6
-rw-r--r--library/parsedown/test/data/table_inline_markdown.html22
-rw-r--r--library/parsedown/test/data/table_inline_markdown.md5
-rw-r--r--library/parsedown/test/data/text_reference.html8
-rw-r--r--library/parsedown/test/data/text_reference.md21
-rw-r--r--library/parsedown/test/data/unordered_list.html10
-rw-r--r--library/parsedown/test/data/unordered_list.md8
-rw-r--r--library/parsedown/test/data/untidy_table.html18
-rw-r--r--library/parsedown/test/data/untidy_table.md4
-rw-r--r--library/parsedown/test/data/url_autolinking.html3
-rw-r--r--library/parsedown/test/data/url_autolinking.md5
-rw-r--r--library/parsedown/test/data/whitespace.html1
-rw-r--r--library/parsedown/test/data/whitespace.md5
112 files changed, 2697 insertions, 0 deletions
diff --git a/library/parsedown/LICENSE.txt b/library/parsedown/LICENSE.txt
new file mode 100644
index 000000000..baca86f5b
--- /dev/null
+++ b/library/parsedown/LICENSE.txt
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Emanuil Rusev, erusev.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. \ No newline at end of file
diff --git a/library/parsedown/Parsedown.php b/library/parsedown/Parsedown.php
new file mode 100644
index 000000000..5edd44843
--- /dev/null
+++ b/library/parsedown/Parsedown.php
@@ -0,0 +1,1540 @@
+<?php
+
+namespace library\parsedown;
+
+#
+#
+# Parsedown
+# http://parsedown.org
+#
+# (c) Emanuil Rusev
+# http://erusev.com
+#
+# For the full license information, view the LICENSE file that was distributed
+# with this source code.
+#
+#
+
+class Parsedown
+{
+ # ~
+
+ const version = '1.6.0';
+
+ # ~
+
+ function text($text)
+ {
+ # make sure no definitions are set
+ $this->DefinitionData = array();
+
+ # standardize line breaks
+ $text = str_replace(array("\r\n", "\r"), "\n", $text);
+
+ # remove surrounding line breaks
+ $text = trim($text, "\n");
+
+ # split text into lines
+ $lines = explode("\n", $text);
+
+ # iterate through lines to identify blocks
+ $markup = $this->lines($lines);
+
+ # trim line breaks
+ $markup = trim($markup, "\n");
+
+ return $markup;
+ }
+
+ #
+ # Setters
+ #
+
+ function setBreaksEnabled($breaksEnabled)
+ {
+ $this->breaksEnabled = $breaksEnabled;
+
+ return $this;
+ }
+
+ protected $breaksEnabled;
+
+ function setMarkupEscaped($markupEscaped)
+ {
+ $this->markupEscaped = $markupEscaped;
+
+ return $this;
+ }
+
+ protected $markupEscaped;
+
+ function setUrlsLinked($urlsLinked)
+ {
+ $this->urlsLinked = $urlsLinked;
+
+ return $this;
+ }
+
+ protected $urlsLinked = true;
+
+ #
+ # Lines
+ #
+
+ protected $BlockTypes = array(
+ '#' => array('Header'),
+ '*' => array('Rule', 'List'),
+ '+' => array('List'),
+ '-' => array('SetextHeader', 'Table', 'Rule', 'List'),
+ '0' => array('List'),
+ '1' => array('List'),
+ '2' => array('List'),
+ '3' => array('List'),
+ '4' => array('List'),
+ '5' => array('List'),
+ '6' => array('List'),
+ '7' => array('List'),
+ '8' => array('List'),
+ '9' => array('List'),
+ ':' => array('Table'),
+ '<' => array('Comment', 'Markup'),
+ '=' => array('SetextHeader'),
+ '>' => array('Quote'),
+ '[' => array('Reference'),
+ '_' => array('Rule'),
+ '`' => array('FencedCode'),
+ '|' => array('Table'),
+ '~' => array('FencedCode'),
+ );
+
+ # ~
+
+ protected $unmarkedBlockTypes = array(
+ 'Code',
+ );
+
+ #
+ # Blocks
+ #
+
+ protected function lines(array $lines)
+ {
+ $CurrentBlock = null;
+
+ foreach ($lines as $line)
+ {
+ if (chop($line) === '')
+ {
+ if (isset($CurrentBlock))
+ {
+ $CurrentBlock['interrupted'] = true;
+ }
+
+ continue;
+ }
+
+ if (strpos($line, "\t") !== false)
+ {
+ $parts = explode("\t", $line);
+
+ $line = $parts[0];
+
+ unset($parts[0]);
+
+ foreach ($parts as $part)
+ {
+ $shortage = 4 - mb_strlen($line, 'utf-8') % 4;
+
+ $line .= str_repeat(' ', $shortage);
+ $line .= $part;
+ }
+ }
+
+ $indent = 0;
+
+ while (isset($line[$indent]) and $line[$indent] === ' ')
+ {
+ $indent ++;
+ }
+
+ $text = $indent > 0 ? substr($line, $indent) : $line;
+
+ # ~
+
+ $Line = array('body' => $line, 'indent' => $indent, 'text' => $text);
+
+ # ~
+
+ if (isset($CurrentBlock['continuable']))
+ {
+ $Block = $this->{'block'.$CurrentBlock['type'].'Continue'}($Line, $CurrentBlock);
+
+ if (isset($Block))
+ {
+ $CurrentBlock = $Block;
+
+ continue;
+ }
+ else
+ {
+ if ($this->isBlockCompletable($CurrentBlock['type']))
+ {
+ $CurrentBlock = $this->{'block'.$CurrentBlock['type'].'Complete'}($CurrentBlock);
+ }
+ }
+ }
+
+ # ~
+
+ $marker = $text[0];
+
+ # ~
+
+ $blockTypes = $this->unmarkedBlockTypes;
+
+ if (isset($this->BlockTypes[$marker]))
+ {
+ foreach ($this->BlockTypes[$marker] as $blockType)
+ {
+ $blockTypes []= $blockType;
+ }
+ }
+
+ #
+ # ~
+
+ foreach ($blockTypes as $blockType)
+ {
+ $Block = $this->{'block'.$blockType}($Line, $CurrentBlock);
+
+ if (isset($Block))
+ {
+ $Block['type'] = $blockType;
+
+ if ( ! isset($Block['identified']))
+ {
+ $Blocks []= $CurrentBlock;
+
+ $Block['identified'] = true;
+ }
+
+ if ($this->isBlockContinuable($blockType))
+ {
+ $Block['continuable'] = true;
+ }
+
+ $CurrentBlock = $Block;
+
+ continue 2;
+ }
+ }
+
+ # ~
+
+ if (isset($CurrentBlock) and ! isset($CurrentBlock['type']) and ! isset($CurrentBlock['interrupted']))
+ {
+ $CurrentBlock['element']['text'] .= "\n".$text;
+ }
+ else
+ {
+ $Blocks []= $CurrentBlock;
+
+ $CurrentBlock = $this->paragraph($Line);
+
+ $CurrentBlock['identified'] = true;
+ }
+ }
+
+ # ~
+
+ if (isset($CurrentBlock['continuable']) and $this->isBlockCompletable($CurrentBlock['type']))
+ {
+ $CurrentBlock = $this->{'block'.$CurrentBlock['type'].'Complete'}($CurrentBlock);
+ }
+
+ # ~
+
+ $Blocks []= $CurrentBlock;
+
+ unset($Blocks[0]);
+
+ # ~
+
+ $markup = '';
+
+ foreach ($Blocks as $Block)
+ {
+ if (isset($Block['hidden']))
+ {
+ continue;
+ }
+
+ $markup .= "\n";
+ $markup .= isset($Block['markup']) ? $Block['markup'] : $this->element($Block['element']);
+ }
+
+ $markup .= "\n";
+
+ # ~
+
+ return $markup;
+ }
+
+ protected function isBlockContinuable($Type)
+ {
+ return method_exists($this, 'block'.$Type.'Continue');
+ }
+
+ protected function isBlockCompletable($Type)
+ {
+ return method_exists($this, 'block'.$Type.'Complete');
+ }
+
+ #
+ # Code
+
+ protected function blockCode($Line, $Block = null)
+ {
+ if (isset($Block) and ! isset($Block['type']) and ! isset($Block['interrupted']))
+ {
+ return;
+ }
+
+ if ($Line['indent'] >= 4)
+ {
+ $text = substr($Line['body'], 4);
+
+ $Block = array(
+ 'element' => array(
+ 'name' => 'pre',
+ 'handler' => 'element',
+ 'text' => array(
+ 'name' => 'code',
+ 'text' => $text,
+ ),
+ ),
+ );
+
+ return $Block;
+ }
+ }
+
+ protected function blockCodeContinue($Line, $Block)
+ {
+ if ($Line['indent'] >= 4)
+ {
+ if (isset($Block['interrupted']))
+ {
+ $Block['element']['text']['text'] .= "\n";
+
+ unset($Block['interrupted']);
+ }
+
+ $Block['element']['text']['text'] .= "\n";
+
+ $text = substr($Line['body'], 4);
+
+ $Block['element']['text']['text'] .= $text;
+
+ return $Block;
+ }
+ }
+
+ protected function blockCodeComplete($Block)
+ {
+ $text = $Block['element']['text']['text'];
+
+ $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');
+
+ $Block['element']['text']['text'] = $text;
+
+ return $Block;
+ }
+
+ #
+ # Comment
+
+ protected function blockComment($Line)
+ {
+ if ($this->markupEscaped)
+ {
+ return;
+ }
+
+ if (isset($Line['text'][3]) and $Line['text'][3] === '-' and $Line['text'][2] === '-' and $Line['text'][1] === '!')
+ {
+ $Block = array(
+ 'markup' => $Line['body'],
+ );
+
+ if (preg_match('/-->$/', $Line['text']))
+ {
+ $Block['closed'] = true;
+ }
+
+ return $Block;
+ }
+ }
+
+ protected function blockCommentContinue($Line, array $Block)
+ {
+ if (isset($Block['closed']))
+ {
+ return;
+ }
+
+ $Block['markup'] .= "\n" . $Line['body'];
+
+ if (preg_match('/-->$/', $Line['text']))
+ {
+ $Block['closed'] = true;
+ }
+
+ return $Block;
+ }
+
+ #
+ # Fenced Code
+
+ protected function blockFencedCode($Line)
+ {
+ if (preg_match('/^['.$Line['text'][0].']{3,}[ ]*([\w-]+)?[ ]*$/', $Line['text'], $matches))
+ {
+ $Element = array(
+ 'name' => 'code',
+ 'text' => '',
+ );
+
+ if (isset($matches[1]))
+ {
+ $class = 'language-'.$matches[1];
+
+ $Element['attributes'] = array(
+ 'class' => $class,
+ );
+ }
+
+ $Block = array(
+ 'char' => $Line['text'][0],
+ 'element' => array(
+ 'name' => 'pre',
+ 'handler' => 'element',
+ 'text' => $Element,
+ ),
+ );
+
+ return $Block;
+ }
+ }
+
+ protected function blockFencedCodeContinue($Line, $Block)
+ {
+ if (isset($Block['complete']))
+ {
+ return;
+ }
+
+ if (isset($Block['interrupted']))
+ {
+ $Block['element']['text']['text'] .= "\n";
+
+ unset($Block['interrupted']);
+ }
+
+ if (preg_match('/^'.$Block['char'].'{3,}[ ]*$/', $Line['text']))
+ {
+ $Block['element']['text']['text'] = substr($Block['element']['text']['text'], 1);
+
+ $Block['complete'] = true;
+
+ return $Block;
+ }
+
+ $Block['element']['text']['text'] .= "\n".$Line['body'];;
+
+ return $Block;
+ }
+
+ protected function blockFencedCodeComplete($Block)
+ {
+ $text = $Block['element']['text']['text'];
+
+ $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');
+
+ $Block['element']['text']['text'] = $text;
+
+ return $Block;
+ }
+
+ #
+ # Header
+
+ protected function blockHeader($Line)
+ {
+ if (isset($Line['text'][1]))
+ {
+ $level = 1;
+
+ while (isset($Line['text'][$level]) and $Line['text'][$level] === '#')
+ {
+ $level ++;
+ }
+
+ if ($level > 6)
+ {
+ return;
+ }
+
+ $text = trim($Line['text'], '# ');
+
+ $Block = array(
+ 'element' => array(
+ 'name' => 'h' . min(6, $level),
+ 'text' => $text,
+ 'handler' => 'line',
+ ),
+ );
+
+ return $Block;
+ }
+ }
+
+ #
+ # List
+
+ protected function blockList($Line)
+ {
+ list($name, $pattern) = $Line['text'][0] <= '-' ? array('ul', '[*+-]') : array('ol', '[0-9]+[.]');
+
+ if (preg_match('/^('.$pattern.'[ ]+)(.*)/', $Line['text'], $matches))
+ {
+ $Block = array(
+ 'indent' => $Line['indent'],
+ 'pattern' => $pattern,
+ 'element' => array(
+ 'name' => $name,
+ 'handler' => 'elements',
+ ),
+ );
+
+ $Block['li'] = array(
+ 'name' => 'li',
+ 'handler' => 'li',
+ 'text' => array(
+ $matches[2],
+ ),
+ );
+
+ $Block['element']['text'] []= & $Block['li'];
+
+ return $Block;
+ }
+ }
+
+ protected function blockListContinue($Line, array $Block)
+ {
+ if ($Block['indent'] === $Line['indent'] and preg_match('/^'.$Block['pattern'].'(?:[ ]+(.*)|$)/', $Line['text'], $matches))
+ {
+ if (isset($Block['interrupted']))
+ {
+ $Block['li']['text'] []= '';
+
+ unset($Block['interrupted']);
+ }
+
+ unset($Block['li']);
+
+ $text = isset($matches[1]) ? $matches[1] : '';
+
+ $Block['li'] = array(
+ 'name' => 'li',
+ 'handler' => 'li',
+ 'text' => array(
+ $text,
+ ),
+ );
+
+ $Block['element']['text'] []= & $Block['li'];
+
+ return $Block;
+ }
+
+ if ($Line['text'][0] === '[' and $this->blockReference($Line))
+ {
+ return $Block;
+ }
+
+ if ( ! isset($Block['interrupted']))
+ {
+ $text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);
+
+ $Block['li']['text'] []= $text;
+
+ return $Block;
+ }
+
+ if ($Line['indent'] > 0)
+ {
+ $Block['li']['text'] []= '';
+
+ $text = preg_replace('/^[ ]{0,4}/', '', $Line['body']);
+
+ $Block['li']['text'] []= $text;
+
+ unset($Block['interrupted']);
+
+ return $Block;
+ }
+ }
+
+ #
+ # Quote
+
+ protected function blockQuote($Line)
+ {
+ if (preg_match('/^>[ ]?(.*)/', $Line['text'], $matches))
+ {
+ $Block = array(
+ 'element' => array(
+ 'name' => 'blockquote',
+ 'handler' => 'lines',
+ 'text' => (array) $matches[1],
+ ),
+ );
+
+ return $Block;
+ }
+ }
+
+ protected function blockQuoteContinue($Line, array $Block)
+ {
+ if ($Line['text'][0] === '>' and preg_match('/^>[ ]?(.*)/', $Line['text'], $matches))
+ {
+ if (isset($Block['interrupted']))
+ {
+ $Block['element']['text'] []= '';
+
+ unset($Block['interrupted']);
+ }
+
+ $Block['element']['text'] []= $matches[1];
+
+ return $Block;
+ }
+
+ if ( ! isset($Block['interrupted']))
+ {
+ $Block['element']['text'] []= $Line['text'];
+
+ return $Block;
+ }
+ }
+
+ #
+ # Rule
+
+ protected function blockRule($Line)
+ {
+ if (preg_match('/^(['.$Line['text'][0].'])([ ]*\1){2,}[ ]*$/', $Line['text']))
+ {
+ $Block = array(
+ 'element' => array(
+ 'name' => 'hr'
+ ),
+ );
+
+ return $Block;
+ }
+ }
+
+ #
+ # Setext
+
+ protected function blockSetextHeader($Line, array $Block = null)
+ {
+ if ( ! isset($Block) or isset($Block['type']) or isset($Block['interrupted']))
+ {
+ return;
+ }
+
+ if (chop($Line['text'], $Line['text'][0]) === '')
+ {
+ $Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';
+
+ return $Block;
+ }
+ }
+
+ #
+ # Markup
+
+ protected function blockMarkup($Line)
+ {
+ if ($this->markupEscaped)
+ {
+ return;
+ }
+
+ if (preg_match('/^<(\w*)(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*(\/)?>/', $Line['text'], $matches))
+ {
+ $element = strtolower($matches[1]);
+
+ if (in_array($element, $this->textLevelElements))
+ {
+ return;
+ }
+
+ $Block = array(
+ 'name' => $matches[1],
+ 'depth' => 0,
+ 'markup' => $Line['text'],
+ );
+
+ $length = strlen($matches[0]);
+
+ $remainder = substr($Line['text'], $length);
+
+ if (trim($remainder) === '')
+ {
+ if (isset($matches[2]) or in_array($matches[1], $this->voidElements))
+ {
+ $Block['closed'] = true;
+
+ $Block['void'] = true;
+ }
+ }
+ else
+ {
+ if (isset($matches[2]) or in_array($matches[1], $this->voidElements))
+ {
+ return;
+ }
+
+ if (preg_match('/<\/'.$matches[1].'>[ ]*$/i', $remainder))
+ {
+ $Block['closed'] = true;
+ }
+ }
+
+ return $Block;
+ }
+ }
+
+ protected function blockMarkupContinue($Line, array $Block)
+ {
+ if (isset($Block['closed']))
+ {
+ return;
+ }
+
+ if (preg_match('/^<'.$Block['name'].'(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*>/i', $Line['text'])) # open
+ {
+ $Block['depth'] ++;
+ }
+
+ if (preg_match('/(.*?)<\/'.$Block['name'].'>[ ]*$/i', $Line['text'], $matches)) # close
+ {
+ if ($Block['depth'] > 0)
+ {
+ $Block['depth'] --;
+ }
+ else
+ {
+ $Block['closed'] = true;
+ }
+ }
+
+ if (isset($Block['interrupted']))
+ {
+ $Block['markup'] .= "\n";
+
+ unset($Block['interrupted']);
+ }
+
+ $Block['markup'] .= "\n".$Line['body'];
+
+ return $Block;
+ }
+
+ #
+ # Reference
+
+ protected function blockReference($Line)
+ {
+ if (preg_match('/^\[(.+?)\]:[ ]*<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*$/', $Line['text'], $matches))
+ {
+ $id = strtolower($matches[1]);
+
+ $Data = array(
+ 'url' => $matches[2],
+ 'title' => null,
+ );
+
+ if (isset($matches[3]))
+ {
+ $Data['title'] = $matches[3];
+ }
+
+ $this->DefinitionData['Reference'][$id] = $Data;
+
+ $Block = array(
+ 'hidden' => true,
+ );
+
+ return $Block;
+ }
+ }
+
+ #
+ # Table
+
+ protected function blockTable($Line, array $Block = null)
+ {
+ if ( ! isset($Block) or isset($Block['type']) or isset($Block['interrupted']))
+ {
+ return;
+ }
+
+ if (strpos($Block['element']['text'], '|') !== false and chop($Line['text'], ' -:|') === '')
+ {
+ $alignments = array();
+
+ $divider = $Line['text'];
+
+ $divider = trim($divider);
+ $divider = trim($divider, '|');
+
+ $dividerCells = explode('|', $divider);
+
+ foreach ($dividerCells as $dividerCell)
+ {
+ $dividerCell = trim($dividerCell);
+
+ if ($dividerCell === '')
+ {
+ continue;
+ }
+
+ $alignment = null;
+
+ if ($dividerCell[0] === ':')
+ {
+ $alignment = 'left';
+ }
+
+ if (substr($dividerCell, - 1) === ':')
+ {
+ $alignment = $alignment === 'left' ? 'center' : 'right';
+ }
+
+ $alignments []= $alignment;
+ }
+
+ # ~
+
+ $HeaderElements = array();
+
+ $header = $Block['element']['text'];
+
+ $header = trim($header);
+ $header = trim($header, '|');
+
+ $headerCells = explode('|', $header);
+
+ foreach ($headerCells as $index => $headerCell)
+ {
+ $headerCell = trim($headerCell);
+
+ $HeaderElement = array(
+ 'name' => 'th',
+ 'text' => $headerCell,
+ 'handler' => 'line',
+ );
+
+ if (isset($alignments[$index]))
+ {
+ $alignment = $alignments[$index];
+
+ $HeaderElement['attributes'] = array(
+ 'style' => 'text-align: '.$alignment.';',
+ );
+ }
+
+ $HeaderElements []= $HeaderElement;
+ }
+
+ # ~
+
+ $Block = array(
+ 'alignments' => $alignments,
+ 'identified' => true,
+ 'element' => array(
+ 'name' => 'table',
+ 'handler' => 'elements',
+ ),
+ );
+
+ $Block['element']['text'] []= array(
+ 'name' => 'thead',
+ 'handler' => 'elements',
+ );
+
+ $Block['element']['text'] []= array(
+ 'name' => 'tbody',
+ 'handler' => 'elements',
+ 'text' => array(),
+ );
+
+ $Block['element']['text'][0]['text'] []= array(
+ 'name' => 'tr',
+ 'handler' => 'elements',
+ 'text' => $HeaderElements,
+ );
+
+ return $Block;
+ }
+ }
+
+ protected function blockTableContinue($Line, array $Block)
+ {
+ if (isset($Block['interrupted']))
+ {
+ return;
+ }
+
+ if ($Line['text'][0] === '|' or strpos($Line['text'], '|'))
+ {
+ $Elements = array();
+
+ $row = $Line['text'];
+
+ $row = trim($row);
+ $row = trim($row, '|');
+
+ preg_match_all('/(?:(\\\\[|])|[^|`]|`[^`]+`|`)+/', $row, $matches);
+
+ foreach ($matches[0] as $index => $cell)
+ {
+ $cell = trim($cell);
+
+ $Element = array(
+ 'name' => 'td',
+ 'handler' => 'line',
+ 'text' => $cell,
+ );
+
+ if (isset($Block['alignments'][$index]))
+ {
+ $Element['attributes'] = array(
+ 'style' => 'text-align: '.$Block['alignments'][$index].';',
+ );
+ }
+
+ $Elements []= $Element;
+ }
+
+ $Element = array(
+ 'name' => 'tr',
+ 'handler' => 'elements',
+ 'text' => $Elements,
+ );
+
+ $Block['element']['text'][1]['text'] []= $Element;
+
+ return $Block;
+ }
+ }
+
+ #
+ # ~
+ #
+
+ protected function paragraph($Line)
+ {
+ $Block = array(
+ 'element' => array(
+ 'name' => 'p',
+ 'text' => $Line['text'],
+ 'handler' => 'line',
+ ),
+ );
+
+ return $Block;
+ }
+
+ #
+ # Inline Elements
+ #
+
+ protected $InlineTypes = array(
+ '"' => array('SpecialCharacter'),
+ '!' => array('Image'),
+ '&' => array('SpecialCharacter'),
+ '*' => array('Emphasis'),
+ ':' => array('Url'),
+ '<' => array('UrlTag', 'EmailTag', 'Markup', 'SpecialCharacter'),
+ '>' => array('SpecialCharacter'),
+ '[' => array('Link'),
+ '_' => array('Emphasis'),
+ '`' => array('Code'),
+ '~' => array('Strikethrough'),
+ '\\' => array('EscapeSequence'),
+ );
+
+ # ~
+
+ protected $inlineMarkerList = '!"*_&[:<>`~\\';
+
+ #
+ # ~
+ #
+
+ public function line($text)
+ {
+ $markup = '';
+
+ # $excerpt is based on the first occurrence of a marker
+
+ while ($excerpt = strpbrk($text, $this->inlineMarkerList))
+ {
+ $marker = $excerpt[0];
+
+ $markerPosition = strpos($text, $marker);
+
+ $Excerpt = array('text' => $excerpt, 'context' => $text);
+
+ foreach ($this->InlineTypes[$marker] as $inlineType)
+ {
+ $Inline = $this->{'inline'.$inlineType}($Excerpt);
+
+ if ( ! isset($Inline))
+ {
+ continue;
+ }
+
+ # makes sure that the inline belongs to "our" marker
+
+ if (isset($Inline['position']) and $Inline['position'] > $markerPosition)
+ {
+ continue;
+ }
+
+ # sets a default inline position
+
+ if ( ! isset($Inline['position']))
+ {
+ $Inline['position'] = $markerPosition;
+ }
+
+ # the text that comes before the inline
+ $unmarkedText = substr($text, 0, $Inline['position']);
+
+ # compile the unmarked text
+ $markup .= $this->unmarkedText($unmarkedText);
+
+ # compile the inline
+ $markup .= isset($Inline['markup']) ? $Inline['markup'] : $this->element($Inline['element']);
+
+ # remove the examined text
+ $text = substr($text, $Inline['position'] + $Inline['extent']);
+
+ continue 2;
+ }
+
+ # the marker does not belong to an inline
+
+ $unmarkedText = substr($text, 0, $markerPosition + 1);
+
+ $markup .= $this->unmarkedText($unmarkedText);
+
+ $text = substr($text, $markerPosition + 1);
+ }
+
+ $markup .= $this->unmarkedText($text);
+
+ return $markup;
+ }
+
+ #
+ # ~
+ #
+
+ protected function inlineCode($Excerpt)
+ {
+ $marker = $Excerpt['text'][0];
+
+ if (preg_match('/^('.$marker.'+)[ ]*(.+?)[ ]*(?<!'.$marker.')\1(?!'.$marker.')/s', $Excerpt['text'], $matches))
+ {
+ $text = $matches[2];
+ $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');
+ $text = preg_replace("/[ ]*\n/", ' ', $text);
+
+ return array(
+ 'extent' => strlen($matches[0]),
+ 'element' => array(
+ 'name' => 'code',
+ 'text' => $text,
+ ),
+ );
+ }
+ }
+
+ protected function inlineEmailTag($Excerpt)
+ {
+ if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<((mailto:)?\S+?@\S+?)>/i', $Excerpt['text'], $matches))
+ {
+ $url = $matches[1];
+
+ if ( ! isset($matches[2]))
+ {
+ $url = 'mailto:' . $url;
+ }
+
+ return array(
+ 'extent' => strlen($matches[0]),
+ 'element' => array(
+ 'name' => 'a',
+ 'text' => $matches[1],
+ 'attributes' => array(
+ 'href' => $url,
+ ),
+ ),
+ );
+ }
+ }
+
+ protected function inlineEmphasis($Excerpt)
+ {
+ if ( ! isset($Excerpt['text'][1]))
+ {
+ return;
+ }
+
+ $marker = $Excerpt['text'][0];
+
+ if ($Excerpt['text'][1] === $marker and preg_match($this->StrongRegex[$marker], $Excerpt['text'], $matches))
+ {
+ $emphasis = 'strong';
+ }
+ elseif (preg_match($this->EmRegex[$marker], $Excerpt['text'], $matches))
+ {
+ $emphasis = 'em';
+ }
+ else
+ {
+ return;
+ }
+
+ return array(
+ 'extent' => strlen($matches[0]),
+ 'element' => array(
+ 'name' => $emphasis,
+ 'handler' => 'line',
+ 'text' => $matches[1],
+ ),
+ );
+ }
+
+ protected function inlineEscapeSequence($Excerpt)
+ {
+ if (isset($Excerpt['text'][1]) and in_array($Excerpt['text'][1], $this->specialCharacters))
+ {
+ return array(
+ 'markup' => $Excerpt['text'][1],
+ 'extent' => 2,
+ );
+ }
+ }
+
+ protected function inlineImage($Excerpt)
+ {
+ if ( ! isset($Excerpt['text'][1]) or $Excerpt['text'][1] !== '[')
+ {
+ return;
+ }
+
+ $Excerpt['text']= substr($Excerpt['text'], 1);
+
+ $Link = $this->inlineLink($Excerpt);
+
+ if ($Link === null)
+ {
+ return;
+ }
+
+ $Inline = array(
+ 'extent' => $Link['extent'] + 1,
+ 'element' => array(
+ 'name' => 'img',
+ 'attributes' => array(
+ 'src' => $Link['element']['attributes']['href'],
+ 'alt' => $Link['element']['text'],
+ ),
+ ),
+ );
+
+ $Inline['element']['attributes'] += $Link['element']['attributes'];
+
+ unset($Inline['element']['attributes']['href']);
+
+ return $Inline;
+ }
+
+ protected function inlineLink($Excerpt)
+ {
+ $Element = array(
+ 'name' => 'a',
+ 'handler' => 'line',
+ 'text' => null,
+ 'attributes' => array(
+ 'href' => null,
+ 'title' => null,
+ ),
+ );
+
+ $extent = 0;
+
+ $remainder = $Excerpt['text'];
+
+ if (preg_match('/\[((?:[^][]|(?R))*)\]/', $remainder, $matches))
+ {
+ $Element['text'] = $matches[1];
+
+ $extent += strlen($matches[0]);
+
+ $remainder = substr($remainder, $extent);
+ }
+ else
+ {
+ return;
+ }
+
+ if (preg_match('/^[(]((?:[^ ()]|[(][^ )]+[)])+)(?:[ ]+("[^"]*"|\'[^\']*\'))?[)]/', $remainder, $matches))
+ {
+ $Element['attributes']['href'] = $matches[1];
+
+ if (isset($matches[2]))
+ {
+ $Element['attributes']['title'] = substr($matches[2], 1, - 1);
+ }
+
+ $extent += strlen($matches[0]);
+ }
+ else
+ {
+ if (preg_match('/^\s*\[(.*?)\]/', $remainder, $matches))
+ {
+ $definition = strlen($matches[1]) ? $matches[1] : $Element['text'];
+ $definition = strtolower($definition);
+
+ $extent += strlen($matches[0]);
+ }
+ else
+ {
+ $definition = strtolower($Element['text']);
+ }
+
+ if ( ! isset($this->DefinitionData['Reference'][$definition]))
+ {
+ return;
+ }
+
+ $Definition = $this->DefinitionData['Reference'][$definition];
+
+ $Element['attributes']['href'] = $Definition['url'];
+ $Element['attributes']['title'] = $Definition['title'];
+ }
+
+ $Element['attributes']['href'] = str_replace(array('&', '<'), array('&amp;', '&lt;'), $Element['attributes']['href']);
+
+ return array(
+ 'extent' => $extent,
+ 'element' => $Element,
+ );
+ }
+
+ protected function inlineMarkup($Excerpt)
+ {
+ if ($this->markupEscaped or strpos($Excerpt['text'], '>') === false)
+ {
+ return;
+ }
+
+ if ($Excerpt['text'][1] === '/' and preg_match('/^<\/\w*[ ]*>/s', $Excerpt['text'], $matches))
+ {
+ return array(
+ 'markup' => $matches[0],
+ 'extent' => strlen($matches[0]),
+ );
+ }
+
+ if ($Excerpt['text'][1] === '!' and preg_match('/^<!---?[^>-](?:-?[^-])*-->/s', $Excerpt['text'], $matches))
+ {
+ return array(
+ 'markup' => $matches[0],
+ 'extent' => strlen($matches[0]),
+ );
+ }
+
+ if ($Excerpt['text'][1] !== ' ' and preg_match('/^<\w*(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*\/?>/s', $Excerpt['text'], $matches))
+ {
+ return array(
+ 'markup' => $matches[0],
+ 'extent' => strlen($matches[0]),
+ );
+ }
+ }
+
+ protected function inlineSpecialCharacter($Excerpt)
+ {
+ if ($Excerpt['text'][0] === '&' and ! preg_match('/^&#?\w+;/', $Excerpt['text']))
+ {
+ return array(
+ 'markup' => '&amp;',
+ 'extent' => 1,
+ );
+ }
+
+ $SpecialCharacter = array('>' => 'gt', '<' => 'lt', '"' => 'quot');
+
+ if (isset($SpecialCharacter[$Excerpt['text'][0]]))
+ {
+ return array(
+ 'markup' => '&'.$SpecialCharacter[$Excerpt['text'][0]].';',
+ 'extent' => 1,
+ );
+ }
+ }
+
+ protected function inlineStrikethrough($Excerpt)
+ {
+ if ( ! isset($Excerpt['text'][1]))
+ {
+ return;
+ }
+
+ if ($Excerpt['text'][1] === '~' and preg_match('/^~~(?=\S)(.+?)(?<=\S)~~/', $Excerpt['text'], $matches))
+ {
+ return array(
+ 'extent' => strlen($matches[0]),
+ 'element' => array(
+ 'name' => 'del',
+ 'text' => $matches[1],
+ 'handler' => 'line',
+ ),
+ );
+ }
+ }
+
+ protected function inlineUrl($Excerpt)
+ {
+ if ($this->urlsLinked !== true or ! isset($Excerpt['text'][2]) or $Excerpt['text'][2] !== '/')
+ {
+ return;
+ }
+
+ if (preg_match('/\bhttps?:[\/]{2}[^\s<]+\b\/*/ui', $Excerpt['context'], $matches, PREG_OFFSET_CAPTURE))
+ {
+ $Inline = array(
+ 'extent' => strlen($matches[0][0]),
+ 'position' => $matches[0][1],
+ 'element' => array(
+ 'name' => 'a',
+ 'text' => $matches[0][0],
+ 'attributes' => array(
+ 'href' => $matches[0][0],
+ ),
+ ),
+ );
+
+ return $Inline;
+ }
+ }
+
+ protected function inlineUrlTag($Excerpt)
+ {
+ if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<(\w+:\/{2}[^ >]+)>/i', $Excerpt['text'], $matches))
+ {
+ $url = str_replace(array('&', '<'), array('&amp;', '&lt;'), $matches[1]);
+
+ return array(
+ 'extent' => strlen($matches[0]),
+ 'element' => array(
+ 'name' => 'a',
+ 'text' => $url,
+ 'attributes' => array(
+ 'href' => $url,
+ ),
+ ),
+ );
+ }
+ }
+
+ # ~
+
+ protected function unmarkedText($text)
+ {
+ if ($this->breaksEnabled)
+ {
+ $text = preg_replace('/[ ]*\n/', "<br />\n", $text);
+ }
+ else
+ {
+ $text = preg_replace('/(?:[ ][ ]+|[ ]*\\\\)\n/', "<br />\n", $text);
+ $text = str_replace(" \n", "\n", $text);
+ }
+
+ return $text;
+ }
+
+ #
+ # Handlers
+ #
+
+ protected function element(array $Element)
+ {
+ $markup = '<'.$Element['name'];
+
+ if (isset($Element['attributes']))
+ {
+ foreach ($Element['attributes'] as $name => $value)
+ {
+ if ($value === null)
+ {
+ continue;
+ }
+
+ $markup .= ' '.$name.'="'.$value.'"';
+ }
+ }
+
+ if (isset($Element['text']))
+ {
+ $markup .= '>';
+
+ if (isset($Element['handler']))
+ {
+ $markup .= $this->{$Element['handler']}($Element['text']);
+ }
+ else
+ {
+ $markup .= $Element['text'];
+ }
+
+ $markup .= '</'.$Element['name'].'>';
+ }
+ else
+ {
+ $markup .= ' />';
+ }
+
+ return $markup;
+ }
+
+ protected function elements(array $Elements)
+ {
+ $markup = '';
+
+ foreach ($Elements as $Element)
+ {
+ $markup .= "\n" . $this->element($Element);
+ }
+
+ $markup .= "\n";
+
+ return $markup;
+ }
+
+ # ~
+
+ protected function li($lines)
+ {
+ $markup = $this->lines($lines);
+
+ $trimmedMarkup = trim($markup);
+
+ if ( ! in_array('', $lines) and substr($trimmedMarkup, 0, 3) === '<p>')
+ {
+ $markup = $trimmedMarkup;
+ $markup = substr($markup, 3);
+
+ $position = strpos($markup, "</p>");
+
+ $markup = substr_replace($markup, '', $position, 4);
+ }
+
+ return $markup;
+ }
+
+ #
+ # Deprecated Methods
+ #
+
+ function parse($text)
+ {
+ $markup = $this->text($text);
+
+ return $markup;
+ }
+
+ #
+ # Static Methods
+ #
+
+ static function instance($name = 'default')
+ {
+ if (isset(self::$instances[$name]))
+ {
+ return self::$instances[$name];
+ }
+
+ $instance = new static();
+
+ self::$instances[$name] = $instance;
+
+ return $instance;
+ }
+
+ private static $instances = array();
+
+ #
+ # Fields
+ #
+
+ protected $DefinitionData;
+
+ #
+ # Read-Only
+
+ protected $specialCharacters = array(
+ '\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!', '|',
+ );
+
+ protected $StrongRegex = array(
+ '*' => '/^[*]{2}((?:\\\\\*|[^*]|[*][^*]*[*])+?)[*]{2}(?![*])/s',
+ '_' => '/^__((?:\\\\_|[^_]|_[^_]*_)+?)__(?!_)/us',
+ );
+
+ protected $EmRegex = array(
+ '*' => '/^[*]((?:\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s',
+ '_' => '/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us',
+ );
+
+ protected $regexHtmlAttribute = '[a-zA-Z_:][\w:.-]*(?:\s*=\s*(?:[^"\'=<>`\s]+|"[^"]*"|\'[^\']*\'))?';
+
+ protected $voidElements = array(
+ 'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source',
+ );
+
+ protected $textLevelElements = array(
+ 'a', 'br', 'bdo', 'abbr', 'blink', 'nextid', 'acronym', 'basefont',
+ 'b', 'em', 'big', 'cite', 'small', 'spacer', 'listing',
+ 'i', 'rp', 'del', 'code', 'strike', 'marquee',
+ 'q', 'rt', 'ins', 'font', 'strong',
+ 's', 'tt', 'sub', 'mark',
+ 'u', 'xm', 'sup', 'nobr',
+ 'var', 'ruby',
+ 'wbr', 'span',
+ 'time',
+ );
+}
diff --git a/library/parsedown/README.md b/library/parsedown/README.md
new file mode 100644
index 000000000..7e1f10e77
--- /dev/null
+++ b/library/parsedown/README.md
@@ -0,0 +1,55 @@
+> You might also like [Caret](http://caret.io?ref=parsedown) - our Markdown editor for Mac / Windows / Linux.
+
+## Parsedown
+
+[![Build Status](https://img.shields.io/travis/erusev/parsedown/master.svg?style=flat-square)](https://travis-ci.org/erusev/parsedown)
+<!--[![Total Downloads](http://img.shields.io/packagist/dt/erusev/parsedown.svg?style=flat-square)](https://packagist.org/packages/erusev/parsedown)-->
+
+Better Markdown Parser in PHP
+
+[Demo](http://parsedown.org/demo) |
+[Benchmarks](http://parsedown.org/speed) |
+[Tests](http://parsedown.org/tests/) |
+[Documentation](https://github.com/erusev/parsedown/wiki/)
+
+### Features
+
+* Super Fast
+* [GitHub flavored](https://help.github.com/articles/github-flavored-markdown)
+* Extensible
+* Tested in 5.3 to 7.0 and in HHVM
+* [Markdown Extra extension](https://github.com/erusev/parsedown-extra)
+
+### Installation
+
+Include `Parsedown.php` or install [the composer package](https://packagist.org/packages/erusev/parsedown).
+
+### Example
+
+``` php
+$Parsedown = new Parsedown();
+
+echo $Parsedown->text('Hello _Parsedown_!'); # prints: <p>Hello <em>Parsedown</em>!</p>
+```
+
+More examples in [the wiki](https://github.com/erusev/parsedown/wiki/) and in [this video tutorial](http://youtu.be/wYZBY8DEikI).
+
+### Questions
+
+**How does Parsedown work?**
+
+It tries to read Markdown like a human. First, it looks at the lines. It’s interested in how the lines start. This helps it recognise blocks. It knows, for example, that if a line start with a `-` then it perhaps belong to a list. Once it recognises the blocks, it continues to the content. As it reads, it watches out for special characters. This helps it recognise inline elements (or inlines).
+
+We call this approach "line based". We believe that Parsedown is the first Markdown parser to use it. Since the release of Parsedown, other developers have used the same approach to develop other Markdown parsers in PHP and in other languages.
+
+**Is it compliant with CommonMark?**
+
+It passes most of the CommonMark tests. Most of the tests that don't pass deal with cases that are quite uncommon. Still, as CommonMark matures, compliance should improve.
+
+**Who uses it?**
+
+[phpDocumentor](http://www.phpdoc.org/), [October CMS](http://octobercms.com/), [Bolt CMS](http://bolt.cm/), [Kirby CMS](http://getkirby.com/), [Grav CMS](http://getgrav.org/), [Statamic CMS](http://www.statamic.com/), [Herbie CMS](http://www.getherbie.org/), [RaspberryPi.org](http://www.raspberrypi.org/) and [more](https://www.versioneye.com/php/erusev:parsedown/references).
+
+**How can I help?**
+
+Use it, star it, share it and if you feel generous, [donate](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=528P3NZQMP8N2).
diff --git a/library/parsedown/phpunit.xml.dist b/library/parsedown/phpunit.xml.dist
new file mode 100644
index 000000000..b2d5e9d4f
--- /dev/null
+++ b/library/parsedown/phpunit.xml.dist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit bootstrap="test/bootstrap.php" colors="true">
+ <testsuites>
+ <testsuite>
+ <file>test/ParsedownTest.php</file>
+ </testsuite>
+ </testsuites>
+</phpunit> \ No newline at end of file
diff --git a/library/parsedown/test/CommonMarkTest.php b/library/parsedown/test/CommonMarkTest.php
new file mode 100644
index 000000000..9b8d11620
--- /dev/null
+++ b/library/parsedown/test/CommonMarkTest.php
@@ -0,0 +1,74 @@
+<?php
+
+/**
+ * Test Parsedown against the CommonMark spec.
+ *
+ * Some code based on the original JavaScript test runner by jgm.
+ *
+ * @link http://commonmark.org/ CommonMark
+ * @link http://git.io/8WtRvQ JavaScript test runner
+ */
+class CommonMarkTest extends PHPUnit_Framework_TestCase
+{
+ const SPEC_URL = 'https://raw.githubusercontent.com/jgm/stmd/master/spec.txt';
+
+ /**
+ * @dataProvider data
+ * @param $section
+ * @param $markdown
+ * @param $expectedHtml
+ */
+ function test_($section, $markdown, $expectedHtml)
+ {
+ $Parsedown = new Parsedown();
+ $Parsedown->setUrlsLinked(false);
+
+ $actualHtml = $Parsedown->text($markdown);
+ $actualHtml = $this->normalizeMarkup($actualHtml);
+
+ $this->assertEquals($expectedHtml, $actualHtml);
+ }
+
+ function data()
+ {
+ $spec = file_get_contents(self::SPEC_URL);
+ $spec = strstr($spec, '<!-- END TESTS -->', true);
+
+ $tests = array();
+ $currentSection = '';
+
+ preg_replace_callback(
+ '/^\.\n([\s\S]*?)^\.\n([\s\S]*?)^\.$|^#{1,6} *(.*)$/m',
+ function($matches) use ( & $tests, & $currentSection, & $testCount) {
+ if (isset($matches[3]) and $matches[3]) {
+ $currentSection = $matches[3];
+ } else {
+ $testCount++;
+ $markdown = $matches[1];
+ $markdown = preg_replace('/→/', "\t", $markdown);
+ $expectedHtml = $matches[2];
+ $expectedHtml = $this->normalizeMarkup($expectedHtml);
+ $tests []= array(
+ $currentSection, # section
+ $markdown, # markdown
+ $expectedHtml, # html
+ );
+ }
+ },
+ $spec
+ );
+
+ return $tests;
+ }
+
+ private function normalizeMarkup($markup)
+ {
+ $markup = preg_replace("/\n+/", "\n", $markup);
+ $markup = preg_replace('/^\s+/m', '', $markup);
+ $markup = preg_replace('/^((?:<[\w]+>)+)\n/m', '$1', $markup);
+ $markup = preg_replace('/\n((?:<\/[\w]+>)+)$/m', '$1', $markup);
+ $markup = trim($markup);
+
+ return $markup;
+ }
+}
diff --git a/library/parsedown/test/ParsedownTest.php b/library/parsedown/test/ParsedownTest.php
new file mode 100644
index 000000000..c922ab1f2
--- /dev/null
+++ b/library/parsedown/test/ParsedownTest.php
@@ -0,0 +1,159 @@
+<?php
+
+class ParsedownTest extends PHPUnit_Framework_TestCase
+{
+ final function __construct($name = null, array $data = array(), $dataName = '')
+ {
+ $this->dirs = $this->initDirs();
+ $this->Parsedown = $this->initParsedown();
+
+ parent::__construct($name, $data, $dataName);
+ }
+
+ private $dirs, $Parsedown;
+
+ /**
+ * @return array
+ */
+ protected function initDirs()
+ {
+ $dirs []= dirname(__FILE__).'/data/';
+
+ return $dirs;
+ }
+
+ /**
+ * @return Parsedown
+ */
+ protected function initParsedown()
+ {
+ $Parsedown = new Parsedown();
+
+ return $Parsedown;
+ }
+
+ /**
+ * @dataProvider data
+ * @param $test
+ * @param $dir
+ */
+ function test_($test, $dir)
+ {
+ $markdown = file_get_contents($dir . $test . '.md');
+
+ $expectedMarkup = file_get_contents($dir . $test . '.html');
+
+ $expectedMarkup = str_replace("\r\n", "\n", $expectedMarkup);
+ $expectedMarkup = str_replace("\r", "\n", $expectedMarkup);
+
+ $actualMarkup = $this->Parsedown->text($markdown);
+
+ $this->assertEquals($expectedMarkup, $actualMarkup);
+ }
+
+ function data()
+ {
+ $data = array();
+
+ foreach ($this->dirs as $dir)
+ {
+ $Folder = new DirectoryIterator($dir);
+
+ foreach ($Folder as $File)
+ {
+ /** @var $File DirectoryIterator */
+
+ if ( ! $File->isFile())
+ {
+ continue;
+ }
+
+ $filename = $File->getFilename();
+
+ $extension = pathinfo($filename, PATHINFO_EXTENSION);
+
+ if ($extension !== 'md')
+ {
+ continue;
+ }
+
+ $basename = $File->getBasename('.md');
+
+ if (file_exists($dir . $basename . '.html'))
+ {
+ $data []= array($basename, $dir);
+ }
+ }
+ }
+
+ return $data;
+ }
+
+ public function test_no_markup()
+ {
+ $markdownWithHtml = <<<MARKDOWN_WITH_MARKUP
+<div>_content_</div>
+
+sparse:
+
+<div>
+<div class="inner">
+_content_
+</div>
+</div>
+
+paragraph
+
+<style type="text/css">
+ p {
+ color: red;
+ }
+</style>
+
+comment
+
+<!-- html comment -->
+MARKDOWN_WITH_MARKUP;
+
+ $expectedHtml = <<<EXPECTED_HTML
+<p>&lt;div&gt;<em>content</em>&lt;/div&gt;</p>
+<p>sparse:</p>
+<p>&lt;div&gt;
+&lt;div class=&quot;inner&quot;&gt;
+<em>content</em>
+&lt;/div&gt;
+&lt;/div&gt;</p>
+<p>paragraph</p>
+<p>&lt;style type=&quot;text/css&quot;&gt;
+p {
+color: red;
+}
+&lt;/style&gt;</p>
+<p>comment</p>
+<p>&lt;!-- html comment --&gt;</p>
+EXPECTED_HTML;
+ $parsedownWithNoMarkup = new Parsedown();
+ $parsedownWithNoMarkup->setMarkupEscaped(true);
+ $this->assertEquals($expectedHtml, $parsedownWithNoMarkup->text($markdownWithHtml));
+ }
+
+ public function testLateStaticBinding()
+ {
+ include 'test/TestParsedown.php';
+
+ $parsedown = Parsedown::instance();
+ $this->assertInstanceOf('Parsedown', $parsedown);
+
+ // After instance is already called on Parsedown
+ // subsequent calls with the same arguments return the same instance
+ $sameParsedown = TestParsedown::instance();
+ $this->assertInstanceOf('Parsedown', $sameParsedown);
+ $this->assertSame($parsedown, $sameParsedown);
+
+ $testParsedown = TestParsedown::instance('test late static binding');
+ $this->assertInstanceOf('TestParsedown', $testParsedown);
+
+ $sameInstanceAgain = TestParsedown::instance('test late static binding');
+ $this->assertSame($testParsedown, $sameInstanceAgain);
+ }
+}
diff --git a/library/parsedown/test/TestParsedown.php b/library/parsedown/test/TestParsedown.php
new file mode 100644
index 000000000..7024dfbcc
--- /dev/null
+++ b/library/parsedown/test/TestParsedown.php
@@ -0,0 +1,5 @@
+<?php
+
+class TestParsedown extends Parsedown
+{
+}
diff --git a/library/parsedown/test/bootstrap.php b/library/parsedown/test/bootstrap.php
new file mode 100644
index 000000000..5f264d2f2
--- /dev/null
+++ b/library/parsedown/test/bootstrap.php
@@ -0,0 +1,3 @@
+<?php
+
+include 'Parsedown.php'; \ No newline at end of file
diff --git a/library/parsedown/test/data/aesthetic_table.html b/library/parsedown/test/data/aesthetic_table.html
new file mode 100644
index 000000000..88e1c2bd4
--- /dev/null
+++ b/library/parsedown/test/data/aesthetic_table.html
@@ -0,0 +1,18 @@
+<table>
+<thead>
+<tr>
+<th>header 1</th>
+<th>header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>cell 1.1</td>
+<td>cell 1.2</td>
+</tr>
+<tr>
+<td>cell 2.1</td>
+<td>cell 2.2</td>
+</tr>
+</tbody>
+</table> \ No newline at end of file
diff --git a/library/parsedown/test/data/aesthetic_table.md b/library/parsedown/test/data/aesthetic_table.md
new file mode 100644
index 000000000..5245e6c9d
--- /dev/null
+++ b/library/parsedown/test/data/aesthetic_table.md
@@ -0,0 +1,4 @@
+| header 1 | header 2 |
+| -------- | -------- |
+| cell 1.1 | cell 1.2 |
+| cell 2.1 | cell 2.2 | \ No newline at end of file
diff --git a/library/parsedown/test/data/aligned_table.html b/library/parsedown/test/data/aligned_table.html
new file mode 100644
index 000000000..c4acfcb68
--- /dev/null
+++ b/library/parsedown/test/data/aligned_table.html
@@ -0,0 +1,21 @@
+<table>
+<thead>
+<tr>
+<th style="text-align: left;">header 1</th>
+<th style="text-align: center;">header 2</th>
+<th style="text-align: right;">header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td style="text-align: left;">cell 1.1</td>
+<td style="text-align: center;">cell 1.2</td>
+<td style="text-align: right;">cell 1.3</td>
+</tr>
+<tr>
+<td style="text-align: left;">cell 2.1</td>
+<td style="text-align: center;">cell 2.2</td>
+<td style="text-align: right;">cell 2.3</td>
+</tr>
+</tbody>
+</table> \ No newline at end of file
diff --git a/library/parsedown/test/data/aligned_table.md b/library/parsedown/test/data/aligned_table.md
new file mode 100644
index 000000000..69a45f90f
--- /dev/null
+++ b/library/parsedown/test/data/aligned_table.md
@@ -0,0 +1,4 @@
+| header 1 | header 2 | header 2 |
+| :------- | :------: | -------: |
+| cell 1.1 | cell 1.2 | cell 1.3 |
+| cell 2.1 | cell 2.2 | cell 2.3 | \ No newline at end of file
diff --git a/library/parsedown/test/data/atx_heading.html b/library/parsedown/test/data/atx_heading.html
new file mode 100644
index 000000000..751f8739f
--- /dev/null
+++ b/library/parsedown/test/data/atx_heading.html
@@ -0,0 +1,9 @@
+<h1>h1</h1>
+<h2>h2</h2>
+<h3>h3</h3>
+<h4>h4</h4>
+<h5>h5</h5>
+<h6>h6</h6>
+<p>####### not a heading</p>
+<h1>closed h1</h1>
+<p>#</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/atx_heading.md b/library/parsedown/test/data/atx_heading.md
new file mode 100644
index 000000000..ad97b44ca
--- /dev/null
+++ b/library/parsedown/test/data/atx_heading.md
@@ -0,0 +1,17 @@
+# h1
+
+## h2
+
+### h3
+
+#### h4
+
+##### h5
+
+###### h6
+
+####### not a heading
+
+# closed h1 #
+
+# \ No newline at end of file
diff --git a/library/parsedown/test/data/automatic_link.html b/library/parsedown/test/data/automatic_link.html
new file mode 100644
index 000000000..50a94ba0f
--- /dev/null
+++ b/library/parsedown/test/data/automatic_link.html
@@ -0,0 +1 @@
+<p><a href="http://example.com">http://example.com</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/automatic_link.md b/library/parsedown/test/data/automatic_link.md
new file mode 100644
index 000000000..08d3bf46a
--- /dev/null
+++ b/library/parsedown/test/data/automatic_link.md
@@ -0,0 +1 @@
+<http://example.com> \ No newline at end of file
diff --git a/library/parsedown/test/data/block-level_html.html b/library/parsedown/test/data/block-level_html.html
new file mode 100644
index 000000000..6443a4a6a
--- /dev/null
+++ b/library/parsedown/test/data/block-level_html.html
@@ -0,0 +1,12 @@
+<div>_content_</div>
+<p>paragraph</p>
+<div>
+ <div class="inner">
+ _content_
+ </div>
+</div>
+<style type="text/css">
+ p {color: #789;}
+</style>
+<div>
+ <a href="/">home</a></div> \ No newline at end of file
diff --git a/library/parsedown/test/data/block-level_html.md b/library/parsedown/test/data/block-level_html.md
new file mode 100644
index 000000000..17cbc22d3
--- /dev/null
+++ b/library/parsedown/test/data/block-level_html.md
@@ -0,0 +1,16 @@
+<div>_content_</div>
+
+paragraph
+
+<div>
+ <div class="inner">
+ _content_
+ </div>
+</div>
+
+<style type="text/css">
+ p {color: #789;}
+</style>
+
+<div>
+ <a href="/">home</a></div> \ No newline at end of file
diff --git a/library/parsedown/test/data/code_block.html b/library/parsedown/test/data/code_block.html
new file mode 100644
index 000000000..889b02d99
--- /dev/null
+++ b/library/parsedown/test/data/code_block.html
@@ -0,0 +1,8 @@
+<pre><code>&lt;?php
+
+$message = 'Hello World!';
+echo $message;</code></pre>
+<hr />
+<pre><code>&gt; not a quote
+- not a list item
+[not a reference]: http://foo.com</code></pre> \ No newline at end of file
diff --git a/library/parsedown/test/data/code_block.md b/library/parsedown/test/data/code_block.md
new file mode 100644
index 000000000..2cfc953cc
--- /dev/null
+++ b/library/parsedown/test/data/code_block.md
@@ -0,0 +1,10 @@
+ <?php
+
+ $message = 'Hello World!';
+ echo $message;
+
+---
+
+ > not a quote
+ - not a list item
+ [not a reference]: http://foo.com \ No newline at end of file
diff --git a/library/parsedown/test/data/code_span.html b/library/parsedown/test/data/code_span.html
new file mode 100644
index 000000000..5c4c231e3
--- /dev/null
+++ b/library/parsedown/test/data/code_span.html
@@ -0,0 +1,6 @@
+<p>a <code>code span</code></p>
+<p><code>this is also a codespan</code> trailing text</p>
+<p><code>and look at this one!</code></p>
+<p>single backtick in a code span: <code>`</code></p>
+<p>backtick-delimited string in a code span: <code>`foo`</code></p>
+<p><code>sth `` sth</code></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/code_span.md b/library/parsedown/test/data/code_span.md
new file mode 100644
index 000000000..c2f1a7442
--- /dev/null
+++ b/library/parsedown/test/data/code_span.md
@@ -0,0 +1,11 @@
+a `code span`
+
+`this is also a codespan` trailing text
+
+`and look at this one!`
+
+single backtick in a code span: `` ` ``
+
+backtick-delimited string in a code span: `` `foo` ``
+
+`sth `` sth` \ No newline at end of file
diff --git a/library/parsedown/test/data/compound_blockquote.html b/library/parsedown/test/data/compound_blockquote.html
new file mode 100644
index 000000000..37afb57a4
--- /dev/null
+++ b/library/parsedown/test/data/compound_blockquote.html
@@ -0,0 +1,9 @@
+<blockquote>
+<h2>header</h2>
+<p>paragraph</p>
+<ul>
+<li>li</li>
+</ul>
+<hr />
+<p>paragraph</p>
+</blockquote> \ No newline at end of file
diff --git a/library/parsedown/test/data/compound_blockquote.md b/library/parsedown/test/data/compound_blockquote.md
new file mode 100644
index 000000000..80c4aed16
--- /dev/null
+++ b/library/parsedown/test/data/compound_blockquote.md
@@ -0,0 +1,10 @@
+> header
+> ------
+>
+> paragraph
+>
+> - li
+>
+> ---
+>
+> paragraph \ No newline at end of file
diff --git a/library/parsedown/test/data/compound_emphasis.html b/library/parsedown/test/data/compound_emphasis.html
new file mode 100644
index 000000000..178dd54ba
--- /dev/null
+++ b/library/parsedown/test/data/compound_emphasis.html
@@ -0,0 +1,2 @@
+<p><em><code>code</code></em> <strong><code>code</code></strong></p>
+<p><em><code>code</code><strong><code>code</code></strong><code>code</code></em></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/compound_emphasis.md b/library/parsedown/test/data/compound_emphasis.md
new file mode 100644
index 000000000..6fe07f260
--- /dev/null
+++ b/library/parsedown/test/data/compound_emphasis.md
@@ -0,0 +1,4 @@
+_`code`_ __`code`__
+
+*`code`**`code`**`code`*
+
diff --git a/library/parsedown/test/data/compound_list.html b/library/parsedown/test/data/compound_list.html
new file mode 100644
index 000000000..f5593c142
--- /dev/null
+++ b/library/parsedown/test/data/compound_list.html
@@ -0,0 +1,12 @@
+<ul>
+<li>
+<p>paragraph</p>
+<p>paragraph</p>
+</li>
+<li>
+<p>paragraph</p>
+<blockquote>
+<p>quote</p>
+</blockquote>
+</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/compound_list.md b/library/parsedown/test/data/compound_list.md
new file mode 100644
index 000000000..ed7f0c60f
--- /dev/null
+++ b/library/parsedown/test/data/compound_list.md
@@ -0,0 +1,7 @@
+- paragraph
+
+ paragraph
+
+- paragraph
+
+ > quote \ No newline at end of file
diff --git a/library/parsedown/test/data/deeply_nested_list.html b/library/parsedown/test/data/deeply_nested_list.html
new file mode 100644
index 000000000..d2c7e5acc
--- /dev/null
+++ b/library/parsedown/test/data/deeply_nested_list.html
@@ -0,0 +1,12 @@
+<ul>
+<li>li
+<ul>
+<li>li
+<ul>
+<li>li</li>
+<li>li</li>
+</ul></li>
+<li>li</li>
+</ul></li>
+<li>li</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/deeply_nested_list.md b/library/parsedown/test/data/deeply_nested_list.md
new file mode 100644
index 000000000..76b7552d8
--- /dev/null
+++ b/library/parsedown/test/data/deeply_nested_list.md
@@ -0,0 +1,6 @@
+- li
+ - li
+ - li
+ - li
+ - li
+- li \ No newline at end of file
diff --git a/library/parsedown/test/data/em_strong.html b/library/parsedown/test/data/em_strong.html
new file mode 100644
index 000000000..323d60aec
--- /dev/null
+++ b/library/parsedown/test/data/em_strong.html
@@ -0,0 +1,8 @@
+<p><strong><em>em strong</em></strong></p>
+<p><strong><em>em strong</em> strong</strong></p>
+<p><strong>strong <em>em strong</em></strong></p>
+<p><strong>strong <em>em strong</em> strong</strong></p>
+<p><strong><em>em strong</em></strong></p>
+<p><strong><em>em strong</em> strong</strong></p>
+<p><strong>strong <em>em strong</em></strong></p>
+<p><strong>strong <em>em strong</em> strong</strong></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/em_strong.md b/library/parsedown/test/data/em_strong.md
new file mode 100644
index 000000000..9abeb3fd4
--- /dev/null
+++ b/library/parsedown/test/data/em_strong.md
@@ -0,0 +1,15 @@
+___em strong___
+
+___em strong_ strong__
+
+__strong _em strong___
+
+__strong _em strong_ strong__
+
+***em strong***
+
+***em strong* strong**
+
+**strong *em strong***
+
+**strong *em strong* strong** \ No newline at end of file
diff --git a/library/parsedown/test/data/email.html b/library/parsedown/test/data/email.html
new file mode 100644
index 000000000..c40759c96
--- /dev/null
+++ b/library/parsedown/test/data/email.html
@@ -0,0 +1 @@
+<p>my email is <a href="mailto:me@example.com">me@example.com</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/email.md b/library/parsedown/test/data/email.md
new file mode 100644
index 000000000..26b7b6cc5
--- /dev/null
+++ b/library/parsedown/test/data/email.md
@@ -0,0 +1 @@
+my email is <me@example.com> \ No newline at end of file
diff --git a/library/parsedown/test/data/emphasis.html b/library/parsedown/test/data/emphasis.html
new file mode 100644
index 000000000..60ff4bd8b
--- /dev/null
+++ b/library/parsedown/test/data/emphasis.html
@@ -0,0 +1,8 @@
+<p><em>underscore</em>, <em>asterisk</em>, <em>one two</em>, <em>three four</em>, <em>a</em>, <em>b</em></p>
+<p><strong>strong</strong> and <em>em</em> and <strong>strong</strong> and <em>em</em></p>
+<p><em>line
+line
+line</em></p>
+<p>this_is_not_an_emphasis</p>
+<p>an empty emphasis __ ** is not an emphasis</p>
+<p>*mixed *<em>double and</em> single asterisk** spans</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/emphasis.md b/library/parsedown/test/data/emphasis.md
new file mode 100644
index 000000000..85b9d2299
--- /dev/null
+++ b/library/parsedown/test/data/emphasis.md
@@ -0,0 +1,13 @@
+_underscore_, *asterisk*, _one two_, *three four*, _a_, *b*
+
+**strong** and *em* and **strong** and *em*
+
+_line
+line
+line_
+
+this_is_not_an_emphasis
+
+an empty emphasis __ ** is not an emphasis
+
+*mixed **double and* single asterisk** spans \ No newline at end of file
diff --git a/library/parsedown/test/data/escaping.html b/library/parsedown/test/data/escaping.html
new file mode 100644
index 000000000..ab1c41fdc
--- /dev/null
+++ b/library/parsedown/test/data/escaping.html
@@ -0,0 +1,6 @@
+<p>escaped *emphasis*.</p>
+<p><code>escaped \*emphasis\* in a code span</code></p>
+<pre><code>escaped \*emphasis\* in a code block</code></pre>
+<p>\ ` * _ { } [ ] ( ) > # + - . !</p>
+<p><em>one_two</em> <strong>one_two</strong></p>
+<p><em>one*two</em> <strong>one*two</strong></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/escaping.md b/library/parsedown/test/data/escaping.md
new file mode 100644
index 000000000..9f174e98c
--- /dev/null
+++ b/library/parsedown/test/data/escaping.md
@@ -0,0 +1,11 @@
+escaped \*emphasis\*.
+
+`escaped \*emphasis\* in a code span`
+
+ escaped \*emphasis\* in a code block
+
+\\ \` \* \_ \{ \} \[ \] \( \) \> \# \+ \- \. \!
+
+_one\_two_ __one\_two__
+
+*one\*two* **one\*two** \ No newline at end of file
diff --git a/library/parsedown/test/data/fenced_code_block.html b/library/parsedown/test/data/fenced_code_block.html
new file mode 100644
index 000000000..8bdabba96
--- /dev/null
+++ b/library/parsedown/test/data/fenced_code_block.html
@@ -0,0 +1,6 @@
+<pre><code>&lt;?php
+
+$message = 'fenced code block';
+echo $message;</code></pre>
+<pre><code>tilde</code></pre>
+<pre><code class="language-php">echo 'language identifier';</code></pre> \ No newline at end of file
diff --git a/library/parsedown/test/data/fenced_code_block.md b/library/parsedown/test/data/fenced_code_block.md
new file mode 100644
index 000000000..cbed8ebb5
--- /dev/null
+++ b/library/parsedown/test/data/fenced_code_block.md
@@ -0,0 +1,14 @@
+```
+<?php
+
+$message = 'fenced code block';
+echo $message;
+```
+
+~~~
+tilde
+~~~
+
+```php
+echo 'language identifier';
+``` \ No newline at end of file
diff --git a/library/parsedown/test/data/horizontal_rule.html b/library/parsedown/test/data/horizontal_rule.html
new file mode 100644
index 000000000..68da03d06
--- /dev/null
+++ b/library/parsedown/test/data/horizontal_rule.html
@@ -0,0 +1,5 @@
+<hr />
+<hr />
+<hr />
+<hr />
+<hr /> \ No newline at end of file
diff --git a/library/parsedown/test/data/horizontal_rule.md b/library/parsedown/test/data/horizontal_rule.md
new file mode 100644
index 000000000..bf461a925
--- /dev/null
+++ b/library/parsedown/test/data/horizontal_rule.md
@@ -0,0 +1,9 @@
+---
+
+- - -
+
+ - - -
+
+***
+
+___ \ No newline at end of file
diff --git a/library/parsedown/test/data/html_comment.html b/library/parsedown/test/data/html_comment.html
new file mode 100644
index 000000000..566dc3add
--- /dev/null
+++ b/library/parsedown/test/data/html_comment.html
@@ -0,0 +1,5 @@
+<!-- single line -->
+<p>paragraph</p>
+<!--
+ multiline -->
+<p>paragraph</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/html_comment.md b/library/parsedown/test/data/html_comment.md
new file mode 100644
index 000000000..6ddfdb441
--- /dev/null
+++ b/library/parsedown/test/data/html_comment.md
@@ -0,0 +1,8 @@
+<!-- single line -->
+
+paragraph
+
+<!--
+ multiline -->
+
+paragraph \ No newline at end of file
diff --git a/library/parsedown/test/data/html_entity.html b/library/parsedown/test/data/html_entity.html
new file mode 100644
index 000000000..4d23e3cd4
--- /dev/null
+++ b/library/parsedown/test/data/html_entity.html
@@ -0,0 +1 @@
+<p>&amp; &copy; &#123;</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/html_entity.md b/library/parsedown/test/data/html_entity.md
new file mode 100644
index 000000000..ff545ea5c
--- /dev/null
+++ b/library/parsedown/test/data/html_entity.md
@@ -0,0 +1 @@
+&amp; &copy; &#123; \ No newline at end of file
diff --git a/library/parsedown/test/data/image_reference.html b/library/parsedown/test/data/image_reference.html
new file mode 100644
index 000000000..67fbd2c86
--- /dev/null
+++ b/library/parsedown/test/data/image_reference.html
@@ -0,0 +1,2 @@
+<p><img src="/md.png" alt="Markdown Logo" /></p>
+<p>![missing reference]</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/image_reference.md b/library/parsedown/test/data/image_reference.md
new file mode 100644
index 000000000..1e11d9479
--- /dev/null
+++ b/library/parsedown/test/data/image_reference.md
@@ -0,0 +1,5 @@
+![Markdown Logo][image]
+
+[image]: /md.png
+
+![missing reference] \ No newline at end of file
diff --git a/library/parsedown/test/data/image_title.html b/library/parsedown/test/data/image_title.html
new file mode 100644
index 000000000..957c9505c
--- /dev/null
+++ b/library/parsedown/test/data/image_title.html
@@ -0,0 +1,2 @@
+<p><img src="/md.png" alt="alt" title="title" /></p>
+<p><img src="/md.png" alt="blank title" title="" /></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/image_title.md b/library/parsedown/test/data/image_title.md
new file mode 100644
index 000000000..7ce2849a5
--- /dev/null
+++ b/library/parsedown/test/data/image_title.md
@@ -0,0 +1,3 @@
+![alt](/md.png "title")
+
+![blank title](/md.png "") \ No newline at end of file
diff --git a/library/parsedown/test/data/implicit_reference.html b/library/parsedown/test/data/implicit_reference.html
new file mode 100644
index 000000000..24b51c1b0
--- /dev/null
+++ b/library/parsedown/test/data/implicit_reference.html
@@ -0,0 +1,4 @@
+<p>an <a href="http://example.com">implicit</a> reference link</p>
+<p>an <a href="http://example.com">implicit</a> reference link with an empty link definition</p>
+<p>an <a href="http://example.com">implicit</a> reference link followed by <a href="http://cnn.com">another</a></p>
+<p>an <a href="http://example.com" title="Example">explicit</a> reference link with a title</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/implicit_reference.md b/library/parsedown/test/data/implicit_reference.md
new file mode 100644
index 000000000..f850df964
--- /dev/null
+++ b/library/parsedown/test/data/implicit_reference.md
@@ -0,0 +1,13 @@
+an [implicit] reference link
+
+[implicit]: http://example.com
+
+an [implicit][] reference link with an empty link definition
+
+an [implicit][] reference link followed by [another][]
+
+[another]: http://cnn.com
+
+an [explicit][example] reference link with a title
+
+[example]: http://example.com "Example" \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_link.html b/library/parsedown/test/data/inline_link.html
new file mode 100644
index 000000000..5ad564aa3
--- /dev/null
+++ b/library/parsedown/test/data/inline_link.html
@@ -0,0 +1,6 @@
+<p><a href="http://example.com">link</a></p>
+<p><a href="/url-(parentheses)">link</a> with parentheses in URL </p>
+<p>(<a href="/index.php">link</a>) in parentheses</p>
+<p><a href="http://example.com"><code>link</code></a></p>
+<p><a href="http://example.com"><img src="http://parsedown.org/md.png" alt="MD Logo" /></a></p>
+<p><a href="http://example.com"><img src="http://parsedown.org/md.png" alt="MD Logo" /> and text</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_link.md b/library/parsedown/test/data/inline_link.md
new file mode 100644
index 000000000..6bac0b35e
--- /dev/null
+++ b/library/parsedown/test/data/inline_link.md
@@ -0,0 +1,11 @@
+[link](http://example.com)
+
+[link](/url-(parentheses)) with parentheses in URL
+
+([link](/index.php)) in parentheses
+
+[`link`](http://example.com)
+
+[![MD Logo](http://parsedown.org/md.png)](http://example.com)
+
+[![MD Logo](http://parsedown.org/md.png) and text](http://example.com) \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_link_title.html b/library/parsedown/test/data/inline_link_title.html
new file mode 100644
index 000000000..ecdfd03da
--- /dev/null
+++ b/library/parsedown/test/data/inline_link_title.html
@@ -0,0 +1,6 @@
+<p><a href="http://example.com" title="Title">single quotes</a></p>
+<p><a href="http://example.com" title="Title">double quotes</a></p>
+<p><a href="http://example.com" title="">single quotes blank</a></p>
+<p><a href="http://example.com" title="">double quotes blank</a></p>
+<p><a href="http://example.com" title="2 Words">space</a></p>
+<p><a href="http://example.com/url-(parentheses)" title="Title">parentheses</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_link_title.md b/library/parsedown/test/data/inline_link_title.md
new file mode 100644
index 000000000..6e1c5af9b
--- /dev/null
+++ b/library/parsedown/test/data/inline_link_title.md
@@ -0,0 +1,11 @@
+[single quotes](http://example.com 'Title')
+
+[double quotes](http://example.com "Title")
+
+[single quotes blank](http://example.com '')
+
+[double quotes blank](http://example.com "")
+
+[space](http://example.com "2 Words")
+
+[parentheses](http://example.com/url-(parentheses) "Title") \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_title.html b/library/parsedown/test/data/inline_title.html
new file mode 100644
index 000000000..bbab93b6c
--- /dev/null
+++ b/library/parsedown/test/data/inline_title.html
@@ -0,0 +1 @@
+<p><a href="http://example.com" title="Example">single quotes</a> and <a href="http://example.com" title="Example">double quotes</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/inline_title.md b/library/parsedown/test/data/inline_title.md
new file mode 100644
index 000000000..cb09344a1
--- /dev/null
+++ b/library/parsedown/test/data/inline_title.md
@@ -0,0 +1 @@
+[single quotes](http://example.com 'Example') and [double quotes](http://example.com "Example") \ No newline at end of file
diff --git a/library/parsedown/test/data/lazy_blockquote.html b/library/parsedown/test/data/lazy_blockquote.html
new file mode 100644
index 000000000..0a2a2aaf9
--- /dev/null
+++ b/library/parsedown/test/data/lazy_blockquote.html
@@ -0,0 +1,6 @@
+<blockquote>
+<p>quote
+the rest of it</p>
+<p>another paragraph
+the rest of it</p>
+</blockquote> \ No newline at end of file
diff --git a/library/parsedown/test/data/lazy_blockquote.md b/library/parsedown/test/data/lazy_blockquote.md
new file mode 100644
index 000000000..48f645f94
--- /dev/null
+++ b/library/parsedown/test/data/lazy_blockquote.md
@@ -0,0 +1,5 @@
+> quote
+the rest of it
+
+> another paragraph
+the rest of it \ No newline at end of file
diff --git a/library/parsedown/test/data/lazy_list.html b/library/parsedown/test/data/lazy_list.html
new file mode 100644
index 000000000..1a5199249
--- /dev/null
+++ b/library/parsedown/test/data/lazy_list.html
@@ -0,0 +1,4 @@
+<ul>
+<li>li
+the rest of it</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/lazy_list.md b/library/parsedown/test/data/lazy_list.md
new file mode 100644
index 000000000..62ad9d719
--- /dev/null
+++ b/library/parsedown/test/data/lazy_list.md
@@ -0,0 +1,2 @@
+- li
+the rest of it \ No newline at end of file
diff --git a/library/parsedown/test/data/line_break.html b/library/parsedown/test/data/line_break.html
new file mode 100644
index 000000000..5f37d854c
--- /dev/null
+++ b/library/parsedown/test/data/line_break.html
@@ -0,0 +1,2 @@
+<p>line<br />
+line</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/line_break.md b/library/parsedown/test/data/line_break.md
new file mode 100644
index 000000000..04dff43e0
--- /dev/null
+++ b/library/parsedown/test/data/line_break.md
@@ -0,0 +1,2 @@
+line
+line \ No newline at end of file
diff --git a/library/parsedown/test/data/multiline_list_paragraph.html b/library/parsedown/test/data/multiline_list_paragraph.html
new file mode 100644
index 000000000..3247bd227
--- /dev/null
+++ b/library/parsedown/test/data/multiline_list_paragraph.html
@@ -0,0 +1,7 @@
+<ul>
+<li>
+<p>li</p>
+<p>line
+line</p>
+</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/multiline_list_paragraph.md b/library/parsedown/test/data/multiline_list_paragraph.md
new file mode 100644
index 000000000..f5b42729f
--- /dev/null
+++ b/library/parsedown/test/data/multiline_list_paragraph.md
@@ -0,0 +1,4 @@
+- li
+
+ line
+ line \ No newline at end of file
diff --git a/library/parsedown/test/data/nested_block-level_html.html b/library/parsedown/test/data/nested_block-level_html.html
new file mode 100644
index 000000000..bfbef54d7
--- /dev/null
+++ b/library/parsedown/test/data/nested_block-level_html.html
@@ -0,0 +1,10 @@
+<div>
+_parent_
+<div>
+_child_
+</div>
+<pre>
+_adopted child_
+</pre>
+</div>
+<p><em>outside</em></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/nested_block-level_html.md b/library/parsedown/test/data/nested_block-level_html.md
new file mode 100644
index 000000000..5e01e1097
--- /dev/null
+++ b/library/parsedown/test/data/nested_block-level_html.md
@@ -0,0 +1,11 @@
+<div>
+_parent_
+<div>
+_child_
+</div>
+<pre>
+_adopted child_
+</pre>
+</div>
+
+_outside_ \ No newline at end of file
diff --git a/library/parsedown/test/data/ordered_list.html b/library/parsedown/test/data/ordered_list.html
new file mode 100644
index 000000000..b6c5216ca
--- /dev/null
+++ b/library/parsedown/test/data/ordered_list.html
@@ -0,0 +1,13 @@
+<ol>
+<li>one</li>
+<li>two</li>
+</ol>
+<p>repeating numbers:</p>
+<ol>
+<li>one</li>
+<li>two</li>
+</ol>
+<p>large numbers:</p>
+<ol>
+<li>one</li>
+</ol> \ No newline at end of file
diff --git a/library/parsedown/test/data/ordered_list.md b/library/parsedown/test/data/ordered_list.md
new file mode 100644
index 000000000..b307032cf
--- /dev/null
+++ b/library/parsedown/test/data/ordered_list.md
@@ -0,0 +1,11 @@
+1. one
+2. two
+
+repeating numbers:
+
+1. one
+1. two
+
+large numbers:
+
+123. one \ No newline at end of file
diff --git a/library/parsedown/test/data/paragraph_list.html b/library/parsedown/test/data/paragraph_list.html
new file mode 100644
index 000000000..ced1c43ee
--- /dev/null
+++ b/library/parsedown/test/data/paragraph_list.html
@@ -0,0 +1,12 @@
+<p>paragraph</p>
+<ul>
+<li>li</li>
+<li>li</li>
+</ul>
+<p>paragraph</p>
+<ul>
+<li>
+<p>li</p>
+</li>
+<li>li</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/paragraph_list.md b/library/parsedown/test/data/paragraph_list.md
new file mode 100644
index 000000000..b973908ce
--- /dev/null
+++ b/library/parsedown/test/data/paragraph_list.md
@@ -0,0 +1,9 @@
+paragraph
+- li
+- li
+
+paragraph
+
+ * li
+
+ * li \ No newline at end of file
diff --git a/library/parsedown/test/data/reference_title.html b/library/parsedown/test/data/reference_title.html
new file mode 100644
index 000000000..8f2be944c
--- /dev/null
+++ b/library/parsedown/test/data/reference_title.html
@@ -0,0 +1,2 @@
+<p><a href="http://example.com" title="example title">double quotes</a> and <a href="http://example.com" title="example title">single quotes</a> and <a href="http://example.com" title="example title">parentheses</a></p>
+<p>[invalid title]: <a href="http://example.com">http://example.com</a> example title</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/reference_title.md b/library/parsedown/test/data/reference_title.md
new file mode 100644
index 000000000..43cb21708
--- /dev/null
+++ b/library/parsedown/test/data/reference_title.md
@@ -0,0 +1,6 @@
+[double quotes] and [single quotes] and [parentheses]
+
+[double quotes]: http://example.com "example title"
+[single quotes]: http://example.com 'example title'
+[parentheses]: http://example.com (example title)
+[invalid title]: http://example.com example title \ No newline at end of file
diff --git a/library/parsedown/test/data/self-closing_html.html b/library/parsedown/test/data/self-closing_html.html
new file mode 100644
index 000000000..4d072b43f
--- /dev/null
+++ b/library/parsedown/test/data/self-closing_html.html
@@ -0,0 +1,12 @@
+<hr>
+<p>paragraph</p>
+<hr/>
+<p>paragraph</p>
+<hr />
+<p>paragraph</p>
+<hr class="foo" id="bar" />
+<p>paragraph</p>
+<hr class="foo" id="bar"/>
+<p>paragraph</p>
+<hr class="foo" id="bar" >
+<p>paragraph</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/self-closing_html.md b/library/parsedown/test/data/self-closing_html.md
new file mode 100644
index 000000000..acb20327d
--- /dev/null
+++ b/library/parsedown/test/data/self-closing_html.md
@@ -0,0 +1,12 @@
+<hr>
+paragraph
+<hr/>
+paragraph
+<hr />
+paragraph
+<hr class="foo" id="bar" />
+paragraph
+<hr class="foo" id="bar"/>
+paragraph
+<hr class="foo" id="bar" >
+paragraph \ No newline at end of file
diff --git a/library/parsedown/test/data/separated_nested_list.html b/library/parsedown/test/data/separated_nested_list.html
new file mode 100644
index 000000000..80a5cae26
--- /dev/null
+++ b/library/parsedown/test/data/separated_nested_list.html
@@ -0,0 +1,9 @@
+<ul>
+<li>
+<p>li</p>
+<ul>
+<li>li</li>
+<li>li</li>
+</ul>
+</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/separated_nested_list.md b/library/parsedown/test/data/separated_nested_list.md
new file mode 100644
index 000000000..d7cd1af79
--- /dev/null
+++ b/library/parsedown/test/data/separated_nested_list.md
@@ -0,0 +1,4 @@
+- li
+
+ - li
+ - li \ No newline at end of file
diff --git a/library/parsedown/test/data/setext_header.html b/library/parsedown/test/data/setext_header.html
new file mode 100644
index 000000000..60aac0815
--- /dev/null
+++ b/library/parsedown/test/data/setext_header.html
@@ -0,0 +1,5 @@
+<h1>h1</h1>
+<h2>h2</h2>
+<h2>single character</h2>
+<p>not a header</p>
+<hr /> \ No newline at end of file
diff --git a/library/parsedown/test/data/setext_header.md b/library/parsedown/test/data/setext_header.md
new file mode 100644
index 000000000..c43b52c36
--- /dev/null
+++ b/library/parsedown/test/data/setext_header.md
@@ -0,0 +1,12 @@
+h1
+==
+
+h2
+--
+
+single character
+-
+
+not a header
+
+------------ \ No newline at end of file
diff --git a/library/parsedown/test/data/simple_blockquote.html b/library/parsedown/test/data/simple_blockquote.html
new file mode 100644
index 000000000..8225d57cc
--- /dev/null
+++ b/library/parsedown/test/data/simple_blockquote.html
@@ -0,0 +1,11 @@
+<blockquote>
+<p>quote</p>
+</blockquote>
+<p>indented:</p>
+<blockquote>
+<p>quote</p>
+</blockquote>
+<p>no space after <code>&gt;</code>:</p>
+<blockquote>
+<p>quote</p>
+</blockquote> \ No newline at end of file
diff --git a/library/parsedown/test/data/simple_blockquote.md b/library/parsedown/test/data/simple_blockquote.md
new file mode 100644
index 000000000..22b6b11a9
--- /dev/null
+++ b/library/parsedown/test/data/simple_blockquote.md
@@ -0,0 +1,7 @@
+> quote
+
+indented:
+ > quote
+
+no space after `>`:
+>quote \ No newline at end of file
diff --git a/library/parsedown/test/data/simple_table.html b/library/parsedown/test/data/simple_table.html
new file mode 100644
index 000000000..237d7efb3
--- /dev/null
+++ b/library/parsedown/test/data/simple_table.html
@@ -0,0 +1,37 @@
+<table>
+<thead>
+<tr>
+<th>header 1</th>
+<th>header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>cell 1.1</td>
+<td>cell 1.2</td>
+</tr>
+<tr>
+<td>cell 2.1</td>
+<td>cell 2.2</td>
+</tr>
+</tbody>
+</table>
+<hr />
+<table>
+<thead>
+<tr>
+<th style="text-align: left;">header 1</th>
+<th>header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td style="text-align: left;">cell 1.1</td>
+<td>cell 1.2</td>
+</tr>
+<tr>
+<td style="text-align: left;">cell 2.1</td>
+<td>cell 2.2</td>
+</tr>
+</tbody>
+</table> \ No newline at end of file
diff --git a/library/parsedown/test/data/simple_table.md b/library/parsedown/test/data/simple_table.md
new file mode 100644
index 000000000..466d140e3
--- /dev/null
+++ b/library/parsedown/test/data/simple_table.md
@@ -0,0 +1,11 @@
+header 1 | header 2
+-------- | --------
+cell 1.1 | cell 1.2
+cell 2.1 | cell 2.2
+
+---
+
+header 1 | header 2
+:------- | --------
+cell 1.1 | cell 1.2
+cell 2.1 | cell 2.2 \ No newline at end of file
diff --git a/library/parsedown/test/data/span-level_html.html b/library/parsedown/test/data/span-level_html.html
new file mode 100644
index 000000000..f852a25a2
--- /dev/null
+++ b/library/parsedown/test/data/span-level_html.html
@@ -0,0 +1,5 @@
+<p>an <b>important</b> <a href=''>link</a></p>
+<p>broken<br/>
+line</p>
+<p><b>inline tag</b> at the beginning</p>
+<p><span><a href="http://example.com">http://example.com</a></span></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/span-level_html.md b/library/parsedown/test/data/span-level_html.md
new file mode 100644
index 000000000..f22196555
--- /dev/null
+++ b/library/parsedown/test/data/span-level_html.md
@@ -0,0 +1,8 @@
+an <b>important</b> <a href=''>link</a>
+
+broken<br/>
+line
+
+<b>inline tag</b> at the beginning
+
+<span>http://example.com</span> \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_dense_list.html b/library/parsedown/test/data/sparse_dense_list.html
new file mode 100644
index 000000000..095bc7396
--- /dev/null
+++ b/library/parsedown/test/data/sparse_dense_list.html
@@ -0,0 +1,7 @@
+<ul>
+<li>
+<p>li</p>
+</li>
+<li>li</li>
+<li>li</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_dense_list.md b/library/parsedown/test/data/sparse_dense_list.md
new file mode 100644
index 000000000..576842277
--- /dev/null
+++ b/library/parsedown/test/data/sparse_dense_list.md
@@ -0,0 +1,4 @@
+- li
+
+- li
+- li \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_html.html b/library/parsedown/test/data/sparse_html.html
new file mode 100644
index 000000000..9e896274c
--- /dev/null
+++ b/library/parsedown/test/data/sparse_html.html
@@ -0,0 +1,8 @@
+<div>
+line 1
+
+line 2
+line 3
+
+line 4
+</div> \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_html.md b/library/parsedown/test/data/sparse_html.md
new file mode 100644
index 000000000..9e896274c
--- /dev/null
+++ b/library/parsedown/test/data/sparse_html.md
@@ -0,0 +1,8 @@
+<div>
+line 1
+
+line 2
+line 3
+
+line 4
+</div> \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_list.html b/library/parsedown/test/data/sparse_list.html
new file mode 100644
index 000000000..452b2b86d
--- /dev/null
+++ b/library/parsedown/test/data/sparse_list.html
@@ -0,0 +1,15 @@
+<ul>
+<li>
+<p>li</p>
+</li>
+<li>li</li>
+</ul>
+<hr />
+<ul>
+<li>
+<p>li</p>
+<ul>
+<li>indented li</li>
+</ul>
+</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/sparse_list.md b/library/parsedown/test/data/sparse_list.md
new file mode 100644
index 000000000..362a35f57
--- /dev/null
+++ b/library/parsedown/test/data/sparse_list.md
@@ -0,0 +1,9 @@
+- li
+
+- li
+
+---
+
+- li
+
+ - indented li \ No newline at end of file
diff --git a/library/parsedown/test/data/special_characters.html b/library/parsedown/test/data/special_characters.html
new file mode 100644
index 000000000..3b652c338
--- /dev/null
+++ b/library/parsedown/test/data/special_characters.html
@@ -0,0 +1,6 @@
+<p>AT&amp;T has an ampersand in their name</p>
+<p>this &amp; that</p>
+<p>4 &lt; 5 and 6 &gt; 5</p>
+<p><a href="http://example.com/autolink?a=1&amp;b=2">http://example.com/autolink?a=1&amp;b=2</a></p>
+<p><a href="/script?a=1&amp;b=2">inline link</a></p>
+<p><a href="http://example.com/?a=1&amp;b=2">reference link</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/special_characters.md b/library/parsedown/test/data/special_characters.md
new file mode 100644
index 000000000..111b03b63
--- /dev/null
+++ b/library/parsedown/test/data/special_characters.md
@@ -0,0 +1,13 @@
+AT&T has an ampersand in their name
+
+this & that
+
+4 < 5 and 6 > 5
+
+<http://example.com/autolink?a=1&b=2>
+
+[inline link](/script?a=1&b=2)
+
+[reference link][1]
+
+[1]: http://example.com/?a=1&b=2 \ No newline at end of file
diff --git a/library/parsedown/test/data/strikethrough.html b/library/parsedown/test/data/strikethrough.html
new file mode 100644
index 000000000..2a9da9821
--- /dev/null
+++ b/library/parsedown/test/data/strikethrough.html
@@ -0,0 +1,3 @@
+<p><del>strikethrough</del></p>
+<p>here's <del>one</del> followed by <del>another one</del></p>
+<p>~~ this ~~ is not one neither is ~this~</p> \ No newline at end of file
diff --git a/library/parsedown/test/data/strikethrough.md b/library/parsedown/test/data/strikethrough.md
new file mode 100644
index 000000000..d169144d2
--- /dev/null
+++ b/library/parsedown/test/data/strikethrough.md
@@ -0,0 +1,5 @@
+~~strikethrough~~
+
+here's ~~one~~ followed by ~~another one~~
+
+~~ this ~~ is not one neither is ~this~ \ No newline at end of file
diff --git a/library/parsedown/test/data/strong_em.html b/library/parsedown/test/data/strong_em.html
new file mode 100644
index 000000000..b709c9914
--- /dev/null
+++ b/library/parsedown/test/data/strong_em.html
@@ -0,0 +1,6 @@
+<p><em>em <strong>strong em</strong></em></p>
+<p><em><strong>strong em</strong> em</em></p>
+<p><em>em <strong>strong em</strong> em</em></p>
+<p><em>em <strong>strong em</strong></em></p>
+<p><em><strong>strong em</strong> em</em></p>
+<p><em>em <strong>strong em</strong> em</em></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/strong_em.md b/library/parsedown/test/data/strong_em.md
new file mode 100644
index 000000000..f2aa3c782
--- /dev/null
+++ b/library/parsedown/test/data/strong_em.md
@@ -0,0 +1,11 @@
+*em **strong em***
+
+***strong em** em*
+
+*em **strong em** em*
+
+_em __strong em___
+
+___strong em__ em_
+
+_em __strong em__ em_ \ No newline at end of file
diff --git a/library/parsedown/test/data/tab-indented_code_block.html b/library/parsedown/test/data/tab-indented_code_block.html
new file mode 100644
index 000000000..7c140de73
--- /dev/null
+++ b/library/parsedown/test/data/tab-indented_code_block.html
@@ -0,0 +1,6 @@
+<pre><code>&lt;?php
+
+$message = 'Hello World!';
+echo $message;
+
+echo "following a blank line";</code></pre> \ No newline at end of file
diff --git a/library/parsedown/test/data/tab-indented_code_block.md b/library/parsedown/test/data/tab-indented_code_block.md
new file mode 100644
index 000000000..a405a1609
--- /dev/null
+++ b/library/parsedown/test/data/tab-indented_code_block.md
@@ -0,0 +1,6 @@
+ <?php
+
+ $message = 'Hello World!';
+ echo $message;
+
+ echo "following a blank line"; \ No newline at end of file
diff --git a/library/parsedown/test/data/table_inline_markdown.html b/library/parsedown/test/data/table_inline_markdown.html
new file mode 100644
index 000000000..f4cebecba
--- /dev/null
+++ b/library/parsedown/test/data/table_inline_markdown.html
@@ -0,0 +1,22 @@
+<table>
+<thead>
+<tr>
+<th><em>header</em> 1</th>
+<th>header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td><em>cell</em> 1.1</td>
+<td><del>cell</del> 1.2</td>
+</tr>
+<tr>
+<td><code>|</code> 2.1</td>
+<td>| 2.2</td>
+</tr>
+<tr>
+<td><code>\|</code> 2.1</td>
+<td><a href="/">link</a></td>
+</tr>
+</tbody>
+</table> \ No newline at end of file
diff --git a/library/parsedown/test/data/table_inline_markdown.md b/library/parsedown/test/data/table_inline_markdown.md
new file mode 100644
index 000000000..2f3c6200f
--- /dev/null
+++ b/library/parsedown/test/data/table_inline_markdown.md
@@ -0,0 +1,5 @@
+| _header_ 1 | header 2 |
+| ------------ | ------------ |
+| _cell_ 1.1 | ~~cell~~ 1.2 |
+| `|` 2.1 | \| 2.2 |
+| `\|` 2.1 | [link](/) | \ No newline at end of file
diff --git a/library/parsedown/test/data/text_reference.html b/library/parsedown/test/data/text_reference.html
new file mode 100644
index 000000000..11e4d37ff
--- /dev/null
+++ b/library/parsedown/test/data/text_reference.html
@@ -0,0 +1,8 @@
+<p><a href="http://example.com">reference link</a></p>
+<p><a href="http://example.com">one</a> with a semantic name</p>
+<p>[one][404] with no definition</p>
+<p><a href="http://example.com">multiline
+one</a> defined on 2 lines</p>
+<p><a href="http://example.com">one</a> with a mixed case label and an upper case definition</p>
+<p><a href="http://example.com">one</a> with the a label on the next line</p>
+<p><a href="http://example.com"><code>link</code></a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/text_reference.md b/library/parsedown/test/data/text_reference.md
new file mode 100644
index 000000000..1a66a5cf6
--- /dev/null
+++ b/library/parsedown/test/data/text_reference.md
@@ -0,0 +1,21 @@
+[reference link][1]
+
+[1]: http://example.com
+
+[one][website] with a semantic name
+
+[website]: http://example.com
+
+[one][404] with no definition
+
+[multiline
+one][website] defined on 2 lines
+
+[one][Label] with a mixed case label and an upper case definition
+
+[LABEL]: http://example.com
+
+[one]
+[1] with the a label on the next line
+
+[`link`][website] \ No newline at end of file
diff --git a/library/parsedown/test/data/unordered_list.html b/library/parsedown/test/data/unordered_list.html
new file mode 100644
index 000000000..cd95567b7
--- /dev/null
+++ b/library/parsedown/test/data/unordered_list.html
@@ -0,0 +1,10 @@
+<ul>
+<li>li</li>
+<li>li</li>
+</ul>
+<p>mixed markers:</p>
+<ul>
+<li>li</li>
+<li>li</li>
+<li>li</li>
+</ul> \ No newline at end of file
diff --git a/library/parsedown/test/data/unordered_list.md b/library/parsedown/test/data/unordered_list.md
new file mode 100644
index 000000000..cf62c99f2
--- /dev/null
+++ b/library/parsedown/test/data/unordered_list.md
@@ -0,0 +1,8 @@
+- li
+- li
+
+mixed markers:
+
+* li
++ li
+- li \ No newline at end of file
diff --git a/library/parsedown/test/data/untidy_table.html b/library/parsedown/test/data/untidy_table.html
new file mode 100644
index 000000000..88e1c2bd4
--- /dev/null
+++ b/library/parsedown/test/data/untidy_table.html
@@ -0,0 +1,18 @@
+<table>
+<thead>
+<tr>
+<th>header 1</th>
+<th>header 2</th>
+</tr>
+</thead>
+<tbody>
+<tr>
+<td>cell 1.1</td>
+<td>cell 1.2</td>
+</tr>
+<tr>
+<td>cell 2.1</td>
+<td>cell 2.2</td>
+</tr>
+</tbody>
+</table> \ No newline at end of file
diff --git a/library/parsedown/test/data/untidy_table.md b/library/parsedown/test/data/untidy_table.md
new file mode 100644
index 000000000..8524eb184
--- /dev/null
+++ b/library/parsedown/test/data/untidy_table.md
@@ -0,0 +1,4 @@
+| header 1 | header 2 |
+| ------------- | ----------- |
+| cell 1.1 | cell 1.2 |
+| cell 2.1 | cell 2.2 | \ No newline at end of file
diff --git a/library/parsedown/test/data/url_autolinking.html b/library/parsedown/test/data/url_autolinking.html
new file mode 100644
index 000000000..58ca94c6b
--- /dev/null
+++ b/library/parsedown/test/data/url_autolinking.html
@@ -0,0 +1,3 @@
+<p>an autolink <a href="http://example.com">http://example.com</a></p>
+<p>inside of brackets [<a href="http://example.com">http://example.com</a>], inside of braces {<a href="http://example.com">http://example.com</a>}, inside of parentheses (<a href="http://example.com">http://example.com</a>)</p>
+<p>trailing slash <a href="http://example.com/">http://example.com/</a> and <a href="http://example.com/path/">http://example.com/path/</a></p> \ No newline at end of file
diff --git a/library/parsedown/test/data/url_autolinking.md b/library/parsedown/test/data/url_autolinking.md
new file mode 100644
index 000000000..840f35404
--- /dev/null
+++ b/library/parsedown/test/data/url_autolinking.md
@@ -0,0 +1,5 @@
+an autolink http://example.com
+
+inside of brackets [http://example.com], inside of braces {http://example.com}, inside of parentheses (http://example.com)
+
+trailing slash http://example.com/ and http://example.com/path/ \ No newline at end of file
diff --git a/library/parsedown/test/data/whitespace.html b/library/parsedown/test/data/whitespace.html
new file mode 100644
index 000000000..f2dd7a002
--- /dev/null
+++ b/library/parsedown/test/data/whitespace.html
@@ -0,0 +1 @@
+<pre><code>code</code></pre> \ No newline at end of file
diff --git a/library/parsedown/test/data/whitespace.md b/library/parsedown/test/data/whitespace.md
new file mode 100644
index 000000000..4cf926a8a
--- /dev/null
+++ b/library/parsedown/test/data/whitespace.md
@@ -0,0 +1,5 @@
+
+
+ code
+
+ \ No newline at end of file