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-rwxr-xr-xvendor/parsedown-0.9.0/Parsedown.php1055
1 files changed, 1055 insertions, 0 deletions
diff --git a/vendor/parsedown-0.9.0/Parsedown.php b/vendor/parsedown-0.9.0/Parsedown.php
new file mode 100755
index 00000000..1c93fb3a
--- /dev/null
+++ b/vendor/parsedown-0.9.0/Parsedown.php
@@ -0,0 +1,1055 @@
+<?php
+
+#
+#
+# Parsedown
+# http://parsedown.org
+#
+# (c) Emanuil Rusev
+# http://erusev.com
+#
+# For the full license information, please view the LICENSE file that was
+# distributed with this source code.
+#
+#
+
+class Parsedown
+{
+ #
+ # Multiton (http://en.wikipedia.org/wiki/Multiton_pattern)
+ #
+
+ static function instance($name = 'default')
+ {
+ if (isset(self::$instances[$name]))
+ return self::$instances[$name];
+
+ $instance = new Parsedown();
+
+ self::$instances[$name] = $instance;
+
+ return $instance;
+ }
+
+ private static $instances = array();
+
+ #
+ # Setters
+ #
+
+ private $breaks_enabled = false;
+
+ function set_breaks_enabled($breaks_enabled)
+ {
+ $this->breaks_enabled = $breaks_enabled;
+
+ return $this;
+ }
+
+ #
+ # Fields
+ #
+
+ private $reference_map = array();
+
+ #
+ # Public Methods
+ #
+
+ function parse($text)
+ {
+ # removes \r characters
+ $text = str_replace("\r\n", "\n", $text);
+ $text = str_replace("\r", "\n", $text);
+
+ # replaces tabs with spaces
+ $text = str_replace("\t", ' ', $text);
+
+ # ~
+
+ $text = trim($text, "\n");
+
+ $lines = explode("\n", $text);
+
+ $text = $this->parse_block_elements($lines);
+
+ $text = rtrim($text, "\n");
+
+ return $text;
+ }
+
+ #
+ # Private Methods
+ #
+
+ private function parse_block_elements(array $lines, $context = '')
+ {
+ $elements = array();
+
+ $element = array(
+ 'type' => '',
+ );
+
+ foreach ($lines as $line)
+ {
+ # fenced elements
+
+ switch ($element['type'])
+ {
+ case 'fenced block':
+
+ if ( ! isset($element['closed']))
+ {
+ if (preg_match('/^[ ]*'.$element['fence'][0].'{3,}[ ]*$/', $line))
+ {
+ $element['closed'] = true;
+ }
+ else
+ {
+ $element['text'] !== '' and $element['text'] .= "\n";
+
+ $element['text'] .= $line;
+ }
+
+ continue 2;
+ }
+
+ break;
+
+ case 'block-level markup':
+
+ if ( ! isset($element['closed']))
+ {
+ if (strpos($line, $element['start']) !== false) # opening tag
+ {
+ $element['depth']++;
+ }
+
+ if (strpos($line, $element['end']) !== false) # closing tag
+ {
+ $element['depth'] > 0
+ ? $element['depth']--
+ : $element['closed'] = true;
+ }
+
+ $element['text'] .= "\n".$line;
+
+ continue 2;
+ }
+
+ break;
+ }
+
+ # *
+
+ $deindented_line = ltrim($line);
+
+ if ($deindented_line === '')
+ {
+ $element['interrupted'] = true;
+
+ continue;
+ }
+
+ # composite elements
+
+ switch ($element['type'])
+ {
+ case 'blockquote':
+
+ if ( ! isset($element['interrupted']))
+ {
+ $line = preg_replace('/^[ ]*>[ ]?/', '', $line);
+
+ $element['lines'] []= $line;
+
+ continue 2;
+ }
+
+ break;
+
+ case 'li':
+
+ if (preg_match('/^([ ]{0,3})(\d+[.]|[*+-])[ ](.*)/', $line, $matches))
+ {
+ if ($element['indentation'] !== $matches[1])
+ {
+ $element['lines'] []= $line;
+ }
+ else
+ {
+ unset($element['last']);
+
+ $elements []= $element;
+
+ unset($element['first']);
+
+ $element['last'] = true;
+ $element['lines'] = array(
+ preg_replace('/^[ ]{0,4}/', '', $matches[3]),
+ );
+ }
+
+ continue 2;
+ }
+
+ if (isset($element['interrupted']))
+ {
+ if ($line[0] === ' ')
+ {
+ $element['lines'] []= '';
+
+ $line = preg_replace('/^[ ]{0,4}/', '', $line);
+
+ $element['lines'] []= $line;
+
+ unset($element['interrupted']);
+
+ continue 2;
+ }
+ }
+ else
+ {
+ $line = preg_replace('/^[ ]{0,4}/', '', $line);
+
+ $element['lines'] []= $line;
+
+ continue 2;
+ }
+
+ break;
+ }
+
+ # indentation sensitive types
+
+ switch ($line[0])
+ {
+ case ' ':
+
+ # code block
+
+ if (isset($line[3]) and $line[3] === ' ' and $line[2] === ' ' and $line[1] === ' ')
+ {
+ $code_line = substr($line, 4);
+
+ if ($element['type'] === 'code block')
+ {
+ if (isset($element['interrupted']))
+ {
+ $element['text'] .= "\n";
+
+ unset ($element['interrupted']);
+ }
+
+ $element['text'] .= "\n".$code_line;
+ }
+ else
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'code block',
+ 'text' => $code_line,
+ );
+ }
+
+ continue 2;
+ }
+
+ break;
+
+ case '#':
+
+ # atx heading (#)
+
+ if (isset($line[1]))
+ {
+ $elements []= $element;
+
+ $level = 1;
+
+ while (isset($line[$level]) and $line[$level] === '#')
+ {
+ $level++;
+ }
+
+ $element = array(
+ 'type' => 'heading',
+ 'text' => trim($line, '# '),
+ 'level' => $level,
+ );
+
+ continue 2;
+ }
+
+ break;
+
+ case '-':
+ case '=':
+
+ # setext heading
+
+ if ($element['type'] === 'paragraph' and isset($element['interrupted']) === false)
+ {
+ $chopped_line = rtrim($line);
+
+ $i = 1;
+
+ while (isset($chopped_line[$i]))
+ {
+ if ($chopped_line[$i] !== $line[0])
+ {
+ break 2;
+ }
+
+ $i++;
+ }
+
+ $element['type'] = 'heading';
+ $element['level'] = $line[0] === '-' ? 2 : 1;
+
+ continue 2;
+ }
+
+ break;
+ }
+
+ # indentation insensitive types
+
+ switch ($deindented_line[0])
+ {
+ case '<':
+
+ $position = strpos($deindented_line, '>');
+
+ if ($position > 1) # tag
+ {
+ $name = substr($deindented_line, 1, $position - 1);
+ $name = rtrim($name);
+
+ if (substr($name, -1) === '/')
+ {
+ $self_closing = true;
+
+ $name = substr($name, 0, -1);
+ }
+
+ $position = strpos($name, ' ');
+
+ if ($position)
+ {
+ $name = substr($name, 0, $position);
+ }
+
+ if ( ! ctype_alpha($name))
+ {
+ break;
+ }
+
+ if (in_array($name, $this->inline_tags))
+ {
+ break;
+ }
+
+ $elements []= $element;
+
+ if (isset($self_closing))
+ {
+ $element = array(
+ 'type' => 'self-closing tag',
+ 'text' => $deindented_line,
+ );
+
+ unset($self_closing);
+
+ continue 2;
+ }
+
+ $element = array(
+ 'type' => 'block-level markup',
+ 'text' => $deindented_line,
+ 'start' => '<'.$name.'>',
+ 'end' => '</'.$name.'>',
+ 'depth' => 0,
+ );
+
+ if (strpos($deindented_line, $element['end']))
+ {
+ $element['closed'] = true;
+ }
+
+ continue 2;
+ }
+
+ break;
+
+ case '>':
+
+ # quote
+
+ if (preg_match('/^>[ ]?(.*)/', $deindented_line, $matches))
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'blockquote',
+ 'lines' => array(
+ $matches[1],
+ ),
+ );
+
+ continue 2;
+ }
+
+ break;
+
+ case '[':
+
+ # reference
+
+ if (preg_match('/^\[(.+?)\]:[ ]*(.+?)(?:[ ]+[\'"](.+?)[\'"])?[ ]*$/', $deindented_line, $matches))
+ {
+ $label = strtolower($matches[1]);
+
+ $this->reference_map[$label] = array(
+ '»' => trim($matches[2], '<>'),
+ );
+
+ if (isset($matches[3]))
+ {
+ $this->reference_map[$label]['#'] = $matches[3];
+ }
+
+ continue 2;
+ }
+
+ break;
+
+ case '`':
+ case '~':
+
+ # fenced code block
+
+ if (preg_match('/^([`]{3,}|[~]{3,})[ ]*(\S+)?[ ]*$/', $deindented_line, $matches))
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'fenced block',
+ 'text' => '',
+ 'fence' => $matches[1],
+ );
+
+ isset($matches[2]) and $element['language'] = $matches[2];
+
+ continue 2;
+ }
+
+ break;
+
+ case '*':
+ case '+':
+ case '-':
+ case '_':
+
+ # hr
+
+ if (preg_match('/^([-*_])([ ]{0,2}\1){2,}[ ]*$/', $deindented_line))
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'hr',
+ );
+
+ continue 2;
+ }
+
+ # li
+
+ if (preg_match('/^([ ]*)[*+-][ ](.*)/', $line, $matches))
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'li',
+ 'ordered' => false,
+ 'indentation' => $matches[1],
+ 'first' => true,
+ 'last' => true,
+ 'lines' => array(
+ preg_replace('/^[ ]{0,4}/', '', $matches[2]),
+ ),
+ );
+
+ continue 2;
+ }
+ }
+
+ # li
+
+ if ($deindented_line[0] <= '9' and $deindented_line[0] >= '0' and preg_match('/^([ ]*)\d+[.][ ](.*)/', $line, $matches))
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'li',
+ 'ordered' => true,
+ 'indentation' => $matches[1],
+ 'first' => true,
+ 'last' => true,
+ 'lines' => array(
+ preg_replace('/^[ ]{0,4}/', '', $matches[2]),
+ ),
+ );
+
+ continue;
+ }
+
+ # paragraph
+
+ if ($element['type'] === 'paragraph')
+ {
+ if (isset($element['interrupted']))
+ {
+ $elements []= $element;
+
+ $element['text'] = $line;
+
+ unset($element['interrupted']);
+ }
+ else
+ {
+ $this->breaks_enabled and $element['text'] .= ' ';
+
+ $element['text'] .= "\n".$line;
+ }
+ }
+ else
+ {
+ $elements []= $element;
+
+ $element = array(
+ 'type' => 'paragraph',
+ 'text' => $line,
+ );
+ }
+ }
+
+ $elements []= $element;
+
+ unset($elements[0]);
+
+ #
+ # ~
+ #
+
+ $markup = '';
+
+ foreach ($elements as $element)
+ {
+ switch ($element['type'])
+ {
+ case 'paragraph':
+
+ $text = $this->parse_span_elements($element['text']);
+
+ if ($context === 'li' and $markup === '')
+ {
+ if (isset($element['interrupted']))
+ {
+ $markup .= "\n".'<p>'.$text.'</p>'."\n";
+ }
+ else
+ {
+ $markup .= $text;
+
+ if (isset($elements[2]))
+ {
+ $markup .= "\n";
+ }
+ }
+ }
+ else
+ {
+ $markup .= '<p>'.$text.'</p>'."\n";
+ }
+
+ break;
+
+ case 'blockquote':
+
+ $text = $this->parse_block_elements($element['lines']);
+
+ $markup .= '<blockquote>'."\n".$text.'</blockquote>'."\n";
+
+ break;
+
+ case 'code block':
+
+ $text = htmlspecialchars($element['text'], ENT_NOQUOTES, 'UTF-8');
+
+ $markup .= '<pre><code>'.$text.'</code></pre>'."\n";
+
+ break;
+
+ case 'fenced block':
+
+ $text = htmlspecialchars($element['text'], ENT_NOQUOTES, 'UTF-8');
+
+ $markup .= '<pre><code';
+
+ isset($element['language']) and $markup .= ' class="language-'.$element['language'].'"';
+
+ $markup .= '>'.$text.'</code></pre>'."\n";
+
+ break;
+
+ case 'heading':
+
+ $text = $this->parse_span_elements($element['text']);
+
+ $markup .= '<h'.$element['level'].'>'.$text.'</h'.$element['level'].'>'."\n";
+
+ break;
+
+ case 'hr':
+
+ $markup .= '<hr />'."\n";
+
+ break;
+
+ case 'li':
+
+ if (isset($element['first']))
+ {
+ $type = $element['ordered'] ? 'ol' : 'ul';
+
+ $markup .= '<'.$type.'>'."\n";
+ }
+
+ if (isset($element['interrupted']) and ! isset($element['last']))
+ {
+ $element['lines'] []= '';
+ }
+
+ $text = $this->parse_block_elements($element['lines'], 'li');
+
+ $markup .= '<li>'.$text.'</li>'."\n";
+
+ if (isset($element['last']))
+ {
+ $type = $element['ordered'] ? 'ol' : 'ul';
+
+ $markup .= '</'.$type.'>'."\n";
+ }
+
+ break;
+
+ case 'block-level markup':
+
+ $markup .= $element['text']."\n";
+
+ break;
+
+ default:
+
+ $markup .= $element['text']."\n";
+ }
+ }
+
+ return $markup;
+ }
+
+ private function parse_span_elements($text, $markers = array(" \n", '![', '&', '*', '<', '[', '\\', '_', '`', 'http', '~~'))
+ {
+ if (isset($text[1]) === false or $markers === array())
+ {
+ return $text;
+ }
+
+ # ~
+
+ $markup = '';
+
+ while ($markers)
+ {
+ $closest_marker = null;
+ $closest_marker_index = 0;
+ $closest_marker_position = null;
+
+ foreach ($markers as $index => $marker)
+ {
+ $marker_position = strpos($text, $marker);
+
+ if ($marker_position === false)
+ {
+ unset($markers[$index]);
+
+ continue;
+ }
+
+ if ($closest_marker === null or $marker_position < $closest_marker_position)
+ {
+ $closest_marker = $marker;
+ $closest_marker_index = $index;
+ $closest_marker_position = $marker_position;
+ }
+ }
+
+ # ~
+
+ if ($closest_marker === null or isset($text[$closest_marker_position + 1]) === false)
+ {
+ $markup .= $text;
+
+ break;
+ }
+ else
+ {
+ $markup .= substr($text, 0, $closest_marker_position);
+ }
+
+ $text = substr($text, $closest_marker_position);
+
+ # ~
+
+ unset($markers[$closest_marker_index]);
+
+ # ~
+
+ switch ($closest_marker)
+ {
+ case " \n":
+
+ $markup .= '<br />'."\n";
+
+ $offset = 3;
+
+ break;
+
+ case '![':
+ case '[':
+
+ if (strpos($text, ']') and preg_match('/\[((?:[^][]|(?R))*)\]/', $text, $matches))
+ {
+ $element = array(
+ '!' => $text[0] === '!',
+ 'a' => $matches[1],
+ );
+
+ $offset = strlen($matches[0]);
+
+ $element['!'] and $offset++;
+
+ $remaining_text = substr($text, $offset);
+
+ if ($remaining_text[0] === '(' and preg_match('/\([ ]*(.*?)(?:[ ]+[\'"](.+?)[\'"])?[ ]*\)/', $remaining_text, $matches))
+ {
+ $element['»'] = $matches[1];
+
+ if (isset($matches[2]))
+ {
+ $element['#'] = $matches[2];
+ }
+
+ $offset += strlen($matches[0]);
+ }
+ elseif ($this->reference_map)
+ {
+ $reference = $element['a'];
+
+ if (preg_match('/^\s*\[(.*?)\]/', $remaining_text, $matches))
+ {
+ $reference = $matches[1] ? $matches[1] : $element['a'];
+
+ $offset += strlen($matches[0]);
+ }
+
+ $reference = strtolower($reference);
+
+ if (isset($this->reference_map[$reference]))
+ {
+ $element['»'] = $this->reference_map[$reference]['»'];
+
+ if (isset($this->reference_map[$reference]['#']))
+ {
+ $element['#'] = $this->reference_map[$reference]['#'];
+ }
+ }
+ else
+ {
+ unset($element);
+ }
+ }
+ else
+ {
+ unset($element);
+ }
+ }
+
+ if (isset($element))
+ {
+ $element['»'] = str_replace('&', '&amp;', $element['»']);
+ $element['»'] = str_replace('<', '&lt;', $element['»']);
+
+ if ($element['!'])
+ {
+ $markup .= '<img alt="'.$element['a'].'" src="'.$element['»'].'"';
+
+ isset($element['#']) and $markup .= ' title="'.$element['#'].'"';
+
+ $markup .= ' />';
+ }
+ else
+ {
+ $element['a'] = $this->parse_span_elements($element['a'], $markers);
+
+ $markup .= '<a href="'.$element['»'].'"';
+
+ isset($element['#']) and $markup .= ' title="'.$element['#'].'"';
+
+ $markup .= '>'.$element['a'].'</a>';
+ }
+
+ unset($element);
+ }
+ else
+ {
+ $markup .= $closest_marker;
+
+ $offset = $closest_marker === '![' ? 2 : 1;
+ }
+
+ break;
+
+ case '&':
+
+ if (preg_match('/^&#?\w+;/', $text, $matches))
+ {
+ $markup .= $matches[0];
+
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= '&amp;';
+
+ $offset = 1;
+ }
+
+ break;
+
+ case '*':
+ case '_':
+
+ if ($text[1] === $closest_marker and preg_match($this->strong_regex[$closest_marker], $text, $matches))
+ {
+ $matches[1] = $this->parse_span_elements($matches[1], $markers);
+
+ $markup .= '<strong>'.$matches[1].'</strong>';
+ }
+ elseif (preg_match($this->em_regex[$closest_marker], $text, $matches))
+ {
+ $matches[1] = $this->parse_span_elements($matches[1], $markers);
+
+ $markup .= '<em>'.$matches[1].'</em>';
+ }
+ elseif ($text[1] === $closest_marker and preg_match($this->strong_em_regex[$closest_marker], $text, $matches))
+ {
+ $matches[2] = $this->parse_span_elements($matches[2], $markers);
+
+ $matches[1] and $matches[1] = $this->parse_span_elements($matches[1], $markers);
+ $matches[3] and $matches[3] = $this->parse_span_elements($matches[3], $markers);
+
+ $markup .= '<strong>'.$matches[1].'<em>'.$matches[2].'</em>'.$matches[3].'</strong>';
+ }
+ elseif (preg_match($this->em_strong_regex[$closest_marker], $text, $matches))
+ {
+ $matches[2] = $this->parse_span_elements($matches[2], $markers);
+
+ $matches[1] and $matches[1] = $this->parse_span_elements($matches[1], $markers);
+ $matches[3] and $matches[3] = $this->parse_span_elements($matches[3], $markers);
+
+ $markup .= '<em>'.$matches[1].'<strong>'.$matches[2].'</strong>'.$matches[3].'</em>';
+ }
+
+ if (isset($matches) and $matches)
+ {
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= $closest_marker;
+
+ $offset = 1;
+ }
+
+ break;
+
+ case '<':
+
+ if (strpos($text, '>') !== false)
+ {
+ if ($text[1] === 'h' and preg_match('/^<(https?:[\/]{2}[^\s]+?)>/i', $text, $matches))
+ {
+ $element_url = $matches[1];
+ $element_url = str_replace('&', '&amp;', $element_url);
+ $element_url = str_replace('<', '&lt;', $element_url);
+
+ $markup .= '<a href="'.$element_url.'">'.$element_url.'</a>';
+
+ $offset = strlen($matches[0]);
+ }
+ elseif (strpos($text, '@') > 1 and preg_match('/<(\S+?@\S+?)>/', $text, $matches))
+ {
+ $markup .= '<a href="mailto:'.$matches[1].'">'.$matches[1].'</a>';
+
+ $offset = strlen($matches[0]);
+ }
+ elseif (preg_match('/^<\/?\w.*?>/', $text, $matches))
+ {
+ $markup .= $matches[0];
+
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= '&lt;';
+
+ $offset = 1;
+ }
+ }
+ else
+ {
+ $markup .= '&lt;';
+
+ $offset = 1;
+ }
+
+ break;
+
+ case '\\':
+
+ if (in_array($text[1], $this->special_characters))
+ {
+ $markup .= $text[1];
+
+ $offset = 2;
+ }
+ else
+ {
+ $markup .= '\\';
+
+ $offset = 1;
+ }
+
+ break;
+
+ case '`':
+
+ if (preg_match('/^(`+)(.+?)\1(?!`)/', $text, $matches))
+ {
+ $element_text = $matches[2];
+ $element_text = htmlspecialchars($element_text, ENT_NOQUOTES, 'UTF-8');
+
+ $markup .= '<code>'.$element_text.'</code>';
+
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= '`';
+
+ $offset = 1;
+ }
+
+ break;
+
+ case 'http':
+
+ if (preg_match('/^https?:[\/]{2}[^\s]+\b/i', $text, $matches))
+ {
+ $element_url = $matches[0];
+ $element_url = str_replace('&', '&amp;', $element_url);
+ $element_url = str_replace('<', '&lt;', $element_url);
+
+ $markup .= '<a href="'.$element_url.'">'.$element_url.'</a>';
+
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= 'http';
+
+ $offset = 4;
+ }
+
+ break;
+
+ case '~~':
+
+ if (preg_match('/^~~(?=\S)(.+?)(?<=\S)~~/', $text, $matches))
+ {
+ $matches[1] = $this->parse_span_elements($matches[1], $markers);
+
+ $markup .= '<del>'.$matches[1].'</del>';
+
+ $offset = strlen($matches[0]);
+ }
+ else
+ {
+ $markup .= '~~';
+
+ $offset = 2;
+ }
+
+ break;
+ }
+
+ if (isset($offset))
+ {
+ $text = substr($text, $offset);
+ }
+
+ $markers[$closest_marker_index] = $closest_marker;
+ }
+
+ return $markup;
+ }
+
+ #
+ # Read-only
+ #
+
+ private $inline_tags = array(
+ 'a', 'abbr', 'acronym', 'b', 'bdo', 'big', 'br', 'button',
+ 'cite', 'code', 'dfn', 'em', 'i', 'img', 'input', 'kbd',
+ 'label', 'map', 'object', 'q', 'samp', 'script', 'select', 'small',
+ 'span', 'strong', 'sub', 'sup', 'textarea', 'tt', 'var',
+ );
+
+ private $special_characters = array('\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!');
+
+ # ~
+
+ private $strong_regex = array(
+ '*' => '/^[*]{2}([^*]+?)[*]{2}(?![*])/s',
+ '_' => '/^__([^_]+?)__(?!_)/s',
+ );
+
+ private $em_regex = array(
+ '*' => '/^[*]([^*]+?)[*](?![*])/s',
+ '_' => '/^_([^_]+?)[_](?![_])\b/s',
+ );
+
+ private $strong_em_regex = array(
+ '*' => '/^[*]{2}(.*?)[*](.+?)[*](.*?)[*]{2}/s',
+ '_' => '/^__(.*?)_(.+?)_(.*?)__/s',
+ );
+
+ private $em_strong_regex = array(
+ '*' => '/^[*](.*?)[*]{2}(.+?)[*]{2}(.*?)[*]/s',
+ '_' => '/^_(.*?)__(.+?)__(.*?)_/s',
+ );
+} \ No newline at end of file