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Diffstat (limited to '_phpetite/dependencies/ParsedownExtra.php')
| -rw-r--r-- | _phpetite/dependencies/ParsedownExtra.php | 685 |
1 files changed, 685 insertions, 0 deletions
diff --git a/_phpetite/dependencies/ParsedownExtra.php b/_phpetite/dependencies/ParsedownExtra.php new file mode 100644 index 0000000..ed2ce73 --- /dev/null +++ b/_phpetite/dependencies/ParsedownExtra.php @@ -0,0 +1,685 @@ +<?php + +# +# +# Parsedown Extra +# https://github.com/erusev/parsedown-extra +# +# (c) Emanuil Rusev +# http://erusev.com +# +# For the full license information, view the LICENSE file that was distributed +# with this source code. +# +# + +class ParsedownExtra extends Parsedown +{ + # ~ + + const version = '0.8.0'; + + # ~ + + function __construct() + { + if (version_compare(parent::version, '1.7.1') < 0) + { + throw new Exception('ParsedownExtra requires a later version of Parsedown'); + } + + $this->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) + { + $Elements = $this->textElements($text); + + # convert to markup + $markup = $this->elements($Elements); + + # trim line breaks + $markup = trim($markup, "\n"); + + # merge consecutive dl elements + + $markup = preg_replace('/<\/dl>\s+<dl>\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 $Block['type'] !== 'Paragraph') + { + return; + } + + $Element = array( + 'name' => 'dl', + 'elements' => array(), + ); + + $terms = explode("\n", $Block['element']['handler']['argument']); + + foreach ($terms as $term) + { + $Element['elements'] []= array( + 'name' => 'dt', + 'handler' => array( + 'function' => 'lineElements', + 'argument' => $term, + 'destination' => 'elements' + ), + ); + } + + $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']['function'] = 'textElements'; + $Block['dd']['handler']['argument'] .= "\n\n"; + + $Block['dd']['handler']['destination'] = 'elements'; + + unset($Block['interrupted']); + } + + $text = substr($Line['body'], min($Line['indent'], 4)); + + $Block['dd']['handler']['argument'] .= "\n" . $text; + + return $Block; + } + } + + # + # Header + + protected function blockHeader($Line) + { + $Block = parent::blockHeader($Line); + + if ($Block !== null && preg_match('/[ #]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['handler']['argument'], $matches, PREG_OFFSET_CAPTURE)) + { + $attributeString = $matches[1][0]; + + $Block['element']['attributes'] = $this->parseAttributeData($attributeString); + + $Block['element']['handler']['argument'] = substr($Block['element']['handler']['argument'], 0, $matches[0][1]); + } + + 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, + 'element' => array( + 'rawHtml' => $Line['text'], + 'autobreak' => true, + ), + ); + + $length = strlen($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'])) + { + $Block['element']['rawHtml'] .= "\n"; + unset($Block['interrupted']); + } + + $Block['element']['rawHtml'] .= "\n".$Line['body']; + + return $Block; + } + + protected function blockMarkupComplete($Block) + { + if ( ! isset($Block['void'])) + { + $Block['element']['rawHtml'] = $this->processTag($Block['element']['rawHtml']); + } + + return $Block; + } + + # + # Setext + + protected function blockSetextHeader($Line, array $Block = null) + { + $Block = parent::blockSetextHeader($Line, $Block); + + if ($Block !== null && preg_match('/[ ]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['handler']['argument'], $matches, PREG_OFFSET_CAPTURE)) + { + $attributeString = $matches[1][0]; + + $Block['element']['attributes'] = $this->parseAttributeData($attributeString); + + $Block['element']['handler']['argument'] = substr($Block['element']['handler']['argument'], 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), + 'element' => 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 = $Link !== null ? substr($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; + } + + # + # ~ + # + + private $currentAbreviation; + private $currentMeaning; + + protected function insertAbreviation(array $Element) + { + if (isset($Element['text'])) + { + $Element['elements'] = self::pregReplaceElements( + '/\b'.preg_quote($this->currentAbreviation, '/').'\b/', + array( + array( + 'name' => 'abbr', + 'attributes' => array( + 'title' => $this->currentMeaning, + ), + 'text' => $this->currentAbreviation, + ) + ), + $Element['text'] + ); + + unset($Element['text']); + } + + return $Element; + } + + protected function inlineText($text) + { + $Inline = parent::inlineText($text); + + if (isset($this->DefinitionData['Abbreviation'])) + { + foreach ($this->DefinitionData['Abbreviation'] as $abbreviation => $meaning) + { + $this->currentAbreviation = $abbreviation; + $this->currentMeaning = $meaning; + + $Inline['element'] = $this->elementApplyRecursiveDepthFirst( + array($this, 'insertAbreviation'), + $Inline['element'] + ); + } + } + + return $Inline; + } + + # + # 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' => array( + 'function' => 'lineElements', + 'argument' => $text, + 'destination' => 'elements' + ), + ); + + if (isset($Block['interrupted'])) + { + $Block['dd']['handler']['function'] = 'textElements'; + + unset($Block['interrupted']); + } + + $Block['element']['elements'] []= & $Block['dd']; + + return $Block; + } + + protected function buildFootnoteElement() + { + $Element = array( + 'name' => 'div', + 'attributes' => array('class' => 'footnotes'), + 'elements' => array( + array('name' => 'hr'), + array( + 'name' => 'ol', + 'elements' => array(), + ), + ), + ); + + uasort($this->DefinitionData['Footnote'], array(__CLASS__, 'sortFootnotes')); + + foreach ($this->DefinitionData['Footnote'] as $definitionId => $DefinitionData) + { + if ( ! isset($DefinitionData['number'])) + { + continue; + } + + $text = $DefinitionData['text']; + + $textElements = parent::textElements($text); + + $numbers = range(1, $DefinitionData['count']); + + $backLinkElements = array(); + + foreach ($numbers as $number) + { + $backLinkElements[] = array('text' => ' '); + $backLinkElements[] = array( + 'name' => 'a', + 'attributes' => array( + 'href' => "#fnref$number:$definitionId", + 'class' => 'footnote-backref', + ), + 'rawHtml' => '↩', + 'allowRawHtmlInSafeMode' => true, + 'autobreak' => false, + ); + } + + unset($backLinkElements[0]); + + $n = count($textElements) -1; + + if ($textElements[$n]['name'] === 'p') + { + $backLinkElements = array_merge( + array( + array( + 'rawHtml' => ' ', + 'allowRawHtmlInSafeMode' => true, + ), + ), + $backLinkElements + ); + + unset($textElements[$n]['name']); + + $textElements[$n] = array( + 'name' => 'p', + 'elements' => array_merge( + array($textElements[$n]), + $backLinkElements + ), + ); + } + else + { + $textElements[] = array( + 'name' => 'p', + 'elements' => $backLinkElements + ); + } + + $Element['elements'][1]['elements'] []= array( + 'name' => 'li', + 'attributes' => array('id' => 'fn:'.$definitionId), + 'elements' => array_merge( + $textElements + ), + ); + } + + 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]+[ ]*)'; +} |