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-rw-r--r--library/parsedown-1.7.4/Parsedown.php1712
1 files changed, 1712 insertions, 0 deletions
diff --git a/library/parsedown-1.7.4/Parsedown.php b/library/parsedown-1.7.4/Parsedown.php
new file mode 100644
index 0000000..1b9d6d5
--- /dev/null
+++ b/library/parsedown-1.7.4/Parsedown.php
@@ -0,0 +1,1712 @@
+<?php
+
+#
+#
+# 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 = '1.7.4';
+
+ # ~
+
+ 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 $urlsLinked = true;
+
+ function setSafeMode($safeMode)
+ {
+ $this->safeMode = (bool) $safeMode;
+
+ return $this;
+ }
+
+ protected $safeMode;
+
+ protected $safeLinksWhitelist = array(
+ 'http://',
+ 'https://',
+ 'ftp://',
+ 'ftps://',
+ 'mailto:',
+ 'data:image/png;base64,',
+ 'data:image/gif;base64,',
+ 'data:image/jpeg;base64,',
+ 'irc:',
+ 'ircs:',
+ 'git:',
+ 'ssh:',
+ 'news:',
+ 'steam:',
+ );
+
+ #
+ # 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'];
+
+ $Block['element']['text']['text'] = $text;
+
+ return $Block;
+ }
+
+ #
+ # Comment
+
+ protected function blockComment($Line)
+ {
+ if ($this->markupEscaped or $this->safeMode)
+ {
+ return;
+ }
+
+ if (isset($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('/^['.$Line['text'][0].']{3,}[ ]*([^`]+)?[ ]*$/', $Line['text'], $matches))
+ {
+ $Element = array(
+ 'name' => 'code',
+ 'text' => '',
+ );
+
+ if (isset($matches[1]))
+ {
+ /**
+ * https://www.w3.org/TR/2011/WD-html5-20110525/elements.html#classes
+ * Every HTML element may have a class attribute specified.
+ * The attribute, if specified, must have a value that is a set
+ * of space-separated tokens representing the various classes
+ * that the element belongs to.
+ * [...]
+ * The space characters, for the purposes of this specification,
+ * are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab),
+ * U+000A LINE FEED (LF), U+000C FORM FEED (FF), and
+ * U+000D CARRIAGE RETURN (CR).
+ */
+ $language = substr($matches[1], 0, strcspn($matches[1], " \t\n\f\r"));
+
+ $class = 'language-'.$language;
+
+ $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'];
+
+ $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' => $name,
+ 'handler' => 'elements',
+ ),
+ );
+
+ if($name === 'ol')
+ {
+ $listStart = stristr($matches[0], '.', true);
+
+ if($listStart !== '1')
+ {
+ $Block['element']['attributes'] = array('start' => $listStart);
+ }
+ }
+
+ $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'] []= '';
+
+ $Block['loose'] = true;
+
+ unset($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;
+ }
+ }
+
+ protected function blockListComplete(array $Block)
+ {
+ if (isset($Block['loose']))
+ {
+ foreach ($Block['element']['text'] as &$li)
+ {
+ if (end($li['text']) !== '')
+ {
+ $li['text'] []= '';
+ }
+ }
+ }
+
+ 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 or $this->safeMode)
+ {
+ return;
+ }
+
+ if (preg_match('/^<(\w[\w-]*)(?:[ ]*'.$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, $nonNestables=array())
+ {
+ $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 $inlineType)
+ {
+ # check to see if the current inline type is nestable in the current context
+
+ if ( ! empty($nonNestables) and in_array($inlineType, $nonNestables))
+ {
+ continue;
+ }
+
+ $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'] = $markerPosition;
+ }
+
+ # cause the new element to 'inherit' our non nestables
+
+ foreach ($nonNestables as $non_nestable)
+ {
+ $Inline['element']['nonNestables'][] = $non_nestable;
+ }
+
+ # 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 = 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',
+ 'nonNestables' => array('Url', 'Link'),
+ '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('/^[(]\s*+((?:[^ ()]++|[(][^ )]+[)])++)(?:[ ]+("[^"]*"|\'[^\']*\'))?\s*[)]/', $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'];
+ }
+
+ return array(
+ 'extent' => $extent,
+ 'element' => $Element,
+ );
+ }
+
+ protected function inlineMarkup($Excerpt)
+ {
+ if ($this->markupEscaped or $this->safeMode or strpos($Excerpt['text'], '>') === false)
+ {
+ return;
+ }
+
+ if ($Excerpt['text'][1] === '/' and preg_match('/^<\/\w[\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 ($Excerpt['text'][1] !== ' ' and preg_match('/^<\w[\w-]*(?:[ ]*'.$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))
+ {
+ $url = $matches[0][0];
+
+ $Inline = array(
+ 'extent' => strlen($matches[0][0]),
+ 'position' => $matches[0][1],
+ 'element' => array(
+ 'name' => 'a',
+ 'text' => $url,
+ 'attributes' => array(
+ 'href' => $url,
+ ),
+ ),
+ );
+
+ return $Inline;
+ }
+ }
+
+ protected function inlineUrlTag($Excerpt)
+ {
+ if (strpos($Excerpt['text'], '>') !== false and preg_match('/^<(\w+:\/{2}[^ >]+)>/i', $Excerpt['text'], $matches))
+ {
+ $url = $matches[1];
+
+ return array(
+ 'extent' => strlen($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 $Element)
+ {
+ if ($this->safeMode)
+ {
+ $Element = $this->sanitiseElement($Element);
+ }
+
+ $markup = '<'.$Element['name'];
+
+ if (isset($Element['attributes']))
+ {
+ foreach ($Element['attributes'] as $name => $value)
+ {
+ if ($value === null)
+ {
+ continue;
+ }
+
+ $markup .= ' '.$name.'="'.self::escape($value).'"';
+ }
+ }
+
+ $permitRawHtml = false;
+
+ if (isset($Element['text']))
+ {
+ $text = $Element['text'];
+ }
+ // very strongly consider an alternative if you're writing an
+ // extension
+ elseif (isset($Element['rawHtml']))
+ {
+ $text = $Element['rawHtml'];
+ $allowRawHtmlInSafeMode = isset($Element['allowRawHtmlInSafeMode']) && $Element['allowRawHtmlInSafeMode'];
+ $permitRawHtml = !$this->safeMode || $allowRawHtmlInSafeMode;
+ }
+
+ if (isset($text))
+ {
+ $markup .= '>';
+
+ if (!isset($Element['nonNestables']))
+ {
+ $Element['nonNestables'] = array();
+ }
+
+ if (isset($Element['handler']))
+ {
+ $markup .= $this->{$Element['handler']}($text, $Element['nonNestables']);
+ }
+ elseif (!$permitRawHtml)
+ {
+ $markup .= self::escape($text, true);
+ }
+ else
+ {
+ $markup .= $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;
+ }
+
+ protected function sanitiseElement(array $Element)
+ {
+ static $goodAttribute = '/^[a-zA-Z0-9][a-zA-Z0-9-_]*+$/';
+ static $safeUrlNameToAtt = array(
+ 'a' => 'href',
+ 'img' => 'src',
+ );
+
+ if (isset($safeUrlNameToAtt[$Element['name']]))
+ {
+ $Element = $this->filterUnsafeUrlInAttribute($Element, $safeUrlNameToAtt[$Element['name']]);
+ }
+
+ if ( ! empty($Element['attributes']))
+ {
+ foreach ($Element['attributes'] as $att => $val)
+ {
+ # filter out badly parsed attribute
+ if ( ! preg_match($goodAttribute, $att))
+ {
+ unset($Element['attributes'][$att]);
+ }
+ # dump onevent attribute
+ elseif (self::striAtStart($att, 'on'))
+ {
+ unset($Element['attributes'][$att]);
+ }
+ }
+ }
+
+ return $Element;
+ }
+
+ protected function filterUnsafeUrlInAttribute(array $Element, $attribute)
+ {
+ foreach ($this->safeLinksWhitelist as $scheme)
+ {
+ if (self::striAtStart($Element['attributes'][$attribute], $scheme))
+ {
+ return $Element;
+ }
+ }
+
+ $Element['attributes'][$attribute] = str_replace(':', '%3A', $Element['attributes'][$attribute]);
+
+ return $Element;
+ }
+
+ #
+ # Static Methods
+ #
+
+ protected static function escape($text, $allowQuotes = false)
+ {
+ return htmlspecialchars($text, $allowQuotes ? ENT_NOQUOTES : ENT_QUOTES, 'UTF-8');
+ }
+
+ protected static function striAtStart($string, $needle)
+ {
+ $len = strlen($needle);
+
+ if ($len > strlen($string))
+ {
+ return false;
+ }
+ else
+ {
+ return strtolower(substr($string, 0, $len)) === strtolower($needle);
+ }
+ }
+
+ 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', 'kbd', 'mark',
+ 'u', 'xm', 'sub', 'nobr',
+ 'sup', 'ruby',
+ 'var', 'span',
+ 'wbr', 'time',
+ );
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-05-13 20:08:37 +0000