BlockTypes[':'] []= 'DefinitionList'; $this->BlockTypes['*'] []= 'Abbreviation'; # identify footnote definitions before reference definitions array_unshift($this->BlockTypes['['], 'Footnote'); # identify footnote markers before before links array_unshift($this->InlineTypes['['], 'FootnoteMarker'); } # # ~ function text($text) { $markup = parent::text($text); # merge consecutive dl elements $markup = preg_replace('/<\/dl>\s+
\s+/', '', $markup); # add footnotes if (isset($this->DefinitionData['Footnote'])) { $Element = $this->buildFootnoteElement(); $markup .= "\n" . $this->element($Element); } return $markup; } # # Blocks # # # Abbreviation protected function blockAbbreviation($Line) { if (preg_match('/^\*\[(.+?)\]:[ ]*(.+?)[ ]*$/', $Line['text'], $matches)) { $this->DefinitionData['Abbreviation'][$matches[1]] = $matches[2]; $Block = array( 'hidden' => true, ); return $Block; } } # # Footnote protected function blockFootnote($Line) { if (preg_match('/^\[\^(.+?)\]:[ ]?(.*)$/', $Line['text'], $matches)) { $Block = array( 'label' => $matches[1], 'text' => $matches[2], 'hidden' => true, ); return $Block; } } protected function blockFootnoteContinue($Line, $Block) { if ($Line['text'][0] === '[' and preg_match('/^\[\^(.+?)\]:/', $Line['text'])) { return; } if (isset($Block['interrupted'])) { if ($Line['indent'] >= 4) { $Block['text'] .= "\n\n" . $Line['text']; return $Block; } } else { $Block['text'] .= "\n" . $Line['text']; return $Block; } } protected function blockFootnoteComplete($Block) { $this->DefinitionData['Footnote'][$Block['label']] = array( 'text' => $Block['text'], 'count' => null, 'number' => null, ); return $Block; } # # Definition List protected function blockDefinitionList($Line, $Block) { if ( ! isset($Block) or isset($Block['type'])) { return; } $Element = array( 'name' => 'dl', 'handler' => 'elements', 'text' => array(), ); $terms = explode("\n", $Block['element']['text']); foreach ($terms as $term) { $Element['text'] []= array( 'name' => 'dt', 'handler' => 'line', 'text' => $term, ); } $Block['element'] = $Element; $Block = $this->addDdElement($Line, $Block); return $Block; } protected function blockDefinitionListContinue($Line, array $Block) { if ($Line['text'][0] === ':') { $Block = $this->addDdElement($Line, $Block); return $Block; } else { if (isset($Block['interrupted']) and $Line['indent'] === 0) { return; } if (isset($Block['interrupted'])) { $Block['dd']['handler'] = 'text'; $Block['dd']['text'] .= "\n\n"; unset($Block['interrupted']); } $text = substr($Line['body'], min($Line['indent'], 4)); $Block['dd']['text'] .= "\n" . $text; return $Block; } } # # Header protected function blockHeader($Line) { $Block = parent::blockHeader($Line); if (preg_match('/[ #]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['text'], $matches, PREG_OFFSET_CAPTURE)) { $attributeString = $matches[1][0]; $Block['element']['attributes'] = $this->parseAttributeData($attributeString); $Block['element']['text'] = substr($Block['element']['text'], 0, $matches[0][1]); } return $Block; } # # Markup protected function blockMarkupComplete($Block) { if ( ! isset($Block['void'])) { $Block['markup'] = $this->processTag($Block['markup']); } return $Block; } # # Setext protected function blockSetextHeader($Line, array $Block = null) { $Block = parent::blockSetextHeader($Line, $Block); if (preg_match('/[ ]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['text'], $matches, PREG_OFFSET_CAPTURE)) { $attributeString = $matches[1][0]; $Block['element']['attributes'] = $this->parseAttributeData($attributeString); $Block['element']['text'] = substr($Block['element']['text'], 0, $matches[0][1]); } return $Block; } # # Inline Elements # # # Footnote Marker protected function inlineFootnoteMarker($Excerpt) { if (preg_match('/^\[\^(.+?)\]/', $Excerpt['text'], $matches)) { $name = $matches[1]; if ( ! isset($this->DefinitionData['Footnote'][$name])) { return; } $this->DefinitionData['Footnote'][$name]['count'] ++; if ( ! isset($this->DefinitionData['Footnote'][$name]['number'])) { $this->DefinitionData['Footnote'][$name]['number'] = ++ $this->footnoteCount; # ยป & } $Element = array( 'name' => 'sup', 'attributes' => array('id' => 'fnref'.$this->DefinitionData['Footnote'][$name]['count'].':'.$name), 'handler' => 'element', 'text' => array( 'name' => 'a', 'attributes' => array('href' => '#fn:'.$name, 'class' => 'footnote-ref'), 'text' => $this->DefinitionData['Footnote'][$name]['number'], ), ); return array( 'extent' => strlen($matches[0]), 'element' => $Element, ); } } private $footnoteCount = 0; # # Link protected function inlineLink($Excerpt) { $Link = parent::inlineLink($Excerpt); $remainder = substr($Excerpt['text'], $Link['extent']); if (preg_match('/^[ ]*{('.$this->regexAttribute.'+)}/', $remainder, $matches)) { $Link['element']['attributes'] += $this->parseAttributeData($matches[1]); $Link['extent'] += strlen($matches[0]); } return $Link; } # # ~ # protected function unmarkedText($text) { $text = parent::unmarkedText($text); if (isset($this->DefinitionData['Abbreviation'])) { foreach ($this->DefinitionData['Abbreviation'] as $abbreviation => $meaning) { $pattern = '/\b'.preg_quote($abbreviation, '/').'\b/'; $text = preg_replace($pattern, ''.$abbreviation.'', $text); } } return $text; } # # Util Methods # protected function addDdElement(array $Line, array $Block) { $text = substr($Line['text'], 1); $text = trim($text); unset($Block['dd']); $Block['dd'] = array( 'name' => 'dd', 'handler' => 'line', 'text' => $text, ); if (isset($Block['interrupted'])) { $Block['dd']['handler'] = 'text'; unset($Block['interrupted']); } $Block['element']['text'] []= & $Block['dd']; return $Block; } protected function buildFootnoteElement() { $Element = array( 'name' => 'div', 'attributes' => array('class' => 'footnotes'), 'handler' => 'elements', 'text' => array( array( 'name' => 'hr', ), array( 'name' => 'ol', 'handler' => 'elements', 'text' => array(), ), ), ); uasort($this->DefinitionData['Footnote'], 'self::sortFootnotes'); foreach ($this->DefinitionData['Footnote'] as $definitionId => $DefinitionData) { if ( ! isset($DefinitionData['number'])) { continue; } $text = $DefinitionData['text']; $text = parent::text($text); $numbers = range(1, $DefinitionData['count']); $backLinksMarkup = ''; foreach ($numbers as $number) { $backLinksMarkup .= ' '; } $backLinksMarkup = substr($backLinksMarkup, 1); if (substr($text, - 4) === '

') { $backLinksMarkup = ' '.$backLinksMarkup; $text = substr_replace($text, $backLinksMarkup.'

', - 4); } else { $text .= "\n".'

'.$backLinksMarkup.'

'; } $Element['text'][1]['text'] []= array( 'name' => 'li', 'attributes' => array('id' => 'fn:'.$definitionId), 'text' => "\n".$text."\n", ); } return $Element; } # ~ protected function parseAttributeData($attributeString) { $Data = array(); $attributes = preg_split('/[ ]+/', $attributeString, - 1, PREG_SPLIT_NO_EMPTY); foreach ($attributes as $attribute) { if ($attribute[0] === '#') { $Data['id'] = substr($attribute, 1); } else # "." { $classes []= substr($attribute, 1); } } if (isset($classes)) { $Data['class'] = implode(' ', $classes); } return $Data; } # ~ protected function processTag($elementMarkup) # recursive { # http://stackoverflow.com/q/1148928/200145 libxml_use_internal_errors(true); $DOMDocument = new DOMDocument; # http://stackoverflow.com/q/11309194/200145 $elementMarkup = mb_convert_encoding($elementMarkup, 'HTML-ENTITIES', 'UTF-8'); # http://stackoverflow.com/q/4879946/200145 $DOMDocument->loadHTML($elementMarkup); $DOMDocument->removeChild($DOMDocument->doctype); $DOMDocument->replaceChild($DOMDocument->firstChild->firstChild->firstChild, $DOMDocument->firstChild); $elementText = ''; if ($DOMDocument->documentElement->getAttribute('markdown') === '1') { foreach ($DOMDocument->documentElement->childNodes as $Node) { $elementText .= $DOMDocument->saveHTML($Node); } $DOMDocument->documentElement->removeAttribute('markdown'); $elementText = "\n".$this->text($elementText)."\n"; } else { foreach ($DOMDocument->documentElement->childNodes as $Node) { $nodeMarkup = $DOMDocument->saveHTML($Node); if ($Node instanceof DOMElement and ! in_array($Node->nodeName, $this->textLevelElements)) { $elementText .= $this->processTag($nodeMarkup); } else { $elementText .= $nodeMarkup; } } } # because we don't want for markup to get encoded $DOMDocument->documentElement->nodeValue = 'placeholder\x1A'; $markup = $DOMDocument->saveHTML($DOMDocument->documentElement); $markup = str_replace('placeholder\x1A', $elementText, $markup); return $markup; } # ~ protected function sortFootnotes($A, $B) # callback { return $A['number'] - $B['number']; } # # Fields # protected $regexAttribute = '(?:[#.][-\w]+[ ]*)'; }