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Directive	Local Value
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System	Linux server.atelieruldeit.ro 3.10.0-1160.el7.x86_64 #1 SMP Mon Oct 19 16:18:59 UTC 2020 x86_64
User	tbf
PHP Version	7.3.33
Software	Apache
Doc root	Writable

Edit File : Parsedown.php \| Size : 41.65 KB
<?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' => '&', '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', ); } Back

Edit File : Parsedown.php | Size : 41.65 KB

<?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',
    );
}

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