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parsedown/composer.json 0000644 00000001423 14716426002 0011272 0 ustar 00 { "name": "erusev/parsedown", "description": "Parser for Markdown.", "keywords": ["markdown", "parser"], "homepage": "http://parsedown.org", "type": "library", "license": "MIT", "authors": [ { "name": "Emanuil Rusev", "email": "hello@erusev.com", "homepage": "http://erusev.com" } ], "require": { "php": ">=5.3.0", "ext-mbstring": "*" }, "require-dev": { "phpunit/phpunit": "^4.8.35" }, "autoload": { "psr-0": {"Parsedown": ""} }, "autoload-dev": { "psr-0": { "TestParsedown": "test/", "ParsedownTest": "test/", "CommonMarkTest": "test/", "CommonMarkTestWeak": "test/" } } } parsedown/Parsedown.php 0000644 00000123225 14716426002 0011230 0 ustar 00 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.'+)[ ]*(.+?)[ ]*(? 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/', "
\n", $text); } else { $text = preg_replace('/(?:[ ][ ]+|[ ]*\\\\)\n/', "
\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) === '
') { $markup = $trimmedMarkup; $markup = substr($markup, 3); $position = strpos($markup, "
"); $markup = substr_replace($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', ); } parsedown/LICENSE.txt 0000644 00000002111 14716426002 0010366 0 ustar 00 The MIT License (MIT) Copyright (c) 2013-2018 Emanuil Rusev, erusev.com Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.