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491 lines
No EOL
14 KiB
PHP
491 lines
No EOL
14 KiB
PHP
<?php
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#
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#
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# Beam Parsedown
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# https://github.com/ardissoebrata/beam-parsedown
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#
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# (c) Emanuil Rusev
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# http://erusev.com
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#
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# (c) Ardi Soebrata
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# https://mybeam.me
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#
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# For the full license information, view the LICENSE file that was distributed
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# with this source code.
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#
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#
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namespace ArdiSSoebrata\BeamParsedown;
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use ParsedownExtra;
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class BeamParsedown extends ParsedownExtra
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{
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const version = '0.0.1';
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protected $isUrlRegex = "/(https?|ftp)\:\/\//i";
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protected $regexAttribute = '(?:([#.][\w-]+\s*)|([\w-]+=[\w-]+\s*))+';
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function __construct()
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{
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parent::__construct();
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// @codeCoverageIgnoreStart
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if (version_compare(parent::version, '0.8.1') < 0)
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{
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throw new Exception('BeamParsedown requires a later version of ParsedownExtra');
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}
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// @codeCoverageIgnoreEnd
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$this->InlineTypes['['][] = 'Icon';
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$this->InlineTypes['['][] = 'Audio';
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// Identify our blocks before definition list.
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array_unshift($this->BlockTypes[':'], 'Alert');
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array_unshift($this->BlockTypes[':'], 'Mermaid');
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array_unshift($this->BlockTypes[':'], 'Chart');
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// Identify our blocks before Reference.
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array_unshift($this->BlockTypes['['], 'Youtube');
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array_unshift($this->BlockTypes['['], 'Drawio');
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}
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// Base path.
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protected $basePath = '';
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public function setBasePath($url)
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{
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$this->basePath = preg_replace('{/$}', '', $url) . '/';
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return $this;
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}
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protected function inlineImage($excerpt)
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{
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$image = parent::inlineImage($excerpt);
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if ( ! isset($image))
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{
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return null;
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}
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// Add basePath if src is relative.
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$src = $image['element']['attributes']['src'];
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if (!preg_match($this->isUrlRegex, $src, $urlmatch)) {
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$image['element']['attributes']['src'] = $this->basePath . $src;
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}
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return $image;
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}
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// Heading id & attributes.
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protected function blockHeader($Line)
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{
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$Block = parent::blockHeader($Line);
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if (! isset($Block)) {
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return null;
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}
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if (!isset($Block['element']['attributes']['id'])) {
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$text = $Block['element']['text'];
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$text = preg_replace('/(\[.+:.*\]\s)/', '', $text); // remove [tag: value]. Ex. [icon: fa fa-home].
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$Block['element']['attributes']['id'] = $this->slugify($text);
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}
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return $Block;
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}
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protected function blockSetextHeader($Line, array $Block = null)
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{
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$Block = parent::blockSetextHeader($Line, $Block);
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if (isset($Block['element']) && !isset($Block['element']['attributes']['id'])) {
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$text = $Block['element']['text'];
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$text = preg_replace('/(\[.+:.*\]\s)/', '', $text); // remove [tag: value]. Ex. [icon: fa fa-home].
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$Block['element']['attributes']['id'] = $this->slugify($text);
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}
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return $Block;
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}
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protected function parseAttributeData($attributeString)
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{
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$Data = array();
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$attributes = preg_split('/[ ]+/', $attributeString, - 1, PREG_SPLIT_NO_EMPTY);
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foreach ($attributes as $attribute)
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{
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if ($attribute[0] === '#')
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{
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$Data['id'] = substr($attribute, 1);
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}
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elseif ($attribute[0] === '.')
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{
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$classes []= substr($attribute, 1);
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}
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elseif (preg_match('/([\w-]+)=([\w-]+)/', $attribute, $match))
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{
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$Data[$match[1]] = $match[2];
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}
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}
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if (isset($classes))
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{
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$Data['class'] = implode(' ', $classes);
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}
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return $Data;
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}
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public static function slugify($text)
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{
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// replace non letter or digits by -
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$text = preg_replace('~[^\pL\d]+~u', '-', $text);
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// transliterate
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$text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
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// remove unwanted characters
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$text = preg_replace('~[^-\w]+~', '', $text);
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// trim
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$text = trim($text, '-');
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// remove duplicate -
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$text = preg_replace('~-+~', '-', $text);
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// lowercase
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$text = strtolower($text);
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if (empty($text)) {
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return 'n-a';
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}
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return $text;
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}
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// Icon
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protected function InlineIcon($excerpt)
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{
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if (preg_match('/\[icon:(.+?)\]/', $excerpt['text'], $matches))
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{
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return array(
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// How many characters to advance the Parsedown's
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// cursor after being done processing this tag.
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'extent' => strlen($matches[0]),
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'element' => array(
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'name' => 'i',
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'attributes' => array(
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'class' => trim($matches[1]),
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),
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'rawHtml' => '',
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),
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);
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}
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}
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// Audio
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protected function InlineAudio($excerpt)
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{
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if (preg_match('/\[audio:(.+?)\]/', $excerpt['text'], $matches))
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{
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// Add basePath if src is relative.
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$src = trim($matches[1]);
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if (!preg_match($this->isUrlRegex, $src, $urlmatch)) {
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$src = $this->basePath . $src;
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}
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return array(
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// How many characters to advance the Parsedown's
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// cursor after being done processing this tag.
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'extent' => strlen($matches[0]),
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'element' => array(
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'name' => 'audio',
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'attributes' => array(
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'controls' => '',
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'preload' => 'none',
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),
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'handler' => 'element',
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'text' => array(
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'name' => 'source',
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'attributes' => array(
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'src' => $src,
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)
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),
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),
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);
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}
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}
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// Youtube
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protected function BlockYoutube($excerpt)
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{
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if (preg_match('/\[youtube:\s*https\:\/\/youtu\.be\/(.+?)\]/', $excerpt['text'], $matches))
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{
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$video_id = trim($matches[1]);
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return array(
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// How many characters to advance the Parsedown's
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// cursor after being done processing this tag.
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'extent' => strlen($matches[0]),
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'element' => array(
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'name' => 'div',
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'attributes' => array(
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'class' => 'overflow-hidden relative h-0',
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'style' => 'padding-bottom: 56.25%',
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),
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'handler' => 'element',
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'text' => array(
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'name' => 'iframe',
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'attributes' => array(
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'src' => 'https://www.youtube.com/embed/' . $video_id,
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'frameborder' => '0',
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'allow' => 'accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture',
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'allowfullscreen' => '',
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'class' => 'left-0 top-0 h-full w-full absolute',
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),
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'rawHtml' => '',
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),
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),
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);
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}
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}
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// Alerts
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protected $alert_types = array(
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'info' => array(
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'container-class' => 'bg-indigo-100 rounded shadow-sm flex overflow-hidden',
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'icon-bg-class' => 'bg-indigo-500 w-20 flex justify-center items-center',
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'icon-class' => 'fa fa-info-circle fa-2x text-white',
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),
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'warning' => array(
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'container-class' => 'bg-yellow-50 rounded shadow-sm flex overflow-hidden',
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'icon-bg-class' => 'bg-yellow-300 w-20 flex justify-center items-center',
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'icon-class' => 'fa fa-exclamation-triangle fa-2x',
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)
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);
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protected function BlockAlert($line, $block)
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{
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$types = implode('|', array_keys($this->alert_types));
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if (preg_match('/^:::(' . $types . ')/', $line['text'], $matches))
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{
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$type = trim($matches[1]);
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return array(
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'char' => $line['text'][0],
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'element' => array(
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'name' => 'div',
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'attributes' => array(
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'class' => $this->alert_types[$type]['container-class'],
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'role' => 'alert',
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),
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'handler' => 'elements',
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'text' => array(
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array(
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'name' => 'div',
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'attributes' => array(
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'class' => $this->alert_types[$type]['icon-bg-class']
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),
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'handler' => 'element',
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'text' => array(
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'name' => 'i',
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'attributes' => array(
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'class' => $this->alert_types[$type]['icon-class'],
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),
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'rawHtml' => ''
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),
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),
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array(
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'name' => 'div',
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'attributes' => array(
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'class' => 'flex-1 px-4',
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),
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'handler' => 'lines',
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'text' => array(),
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)
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),
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),
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);
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}
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}
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protected function BlockAlertContinue($line, $block)
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{
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if (isset($block['complete']))
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{
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return;
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}
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// A blank newline has occurred.
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if (isset($block['interrupted']))
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{
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unset($block['interrupted']);
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}
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// Check for end of the block.
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if (preg_match('/^:::/', $line['text']))
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{
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$block['complete'] = true;
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return $block;
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}
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$block['element']['text'][1]['text'][] = $line['body'];
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return $block;
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}
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protected function BlockAlertComplete($block)
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{
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return $block;
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}
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// draw.io
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protected function BlockDrawio($excerpt)
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{
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if (preg_match('/\[drawio:\s*(.+?)\]/', $excerpt['text'], $matches))
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{
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$file = trim($matches[1]);
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if (!preg_match($this->isUrlRegex, $file, $urlmatch)) {
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$file = $this->basePath . $file;
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}
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return array(
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// How many characters to advance the Parsedown's
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// cursor after being done processing this tag.
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'extent' => strlen($matches[0]),
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'element' => array(
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'name' => 'div',
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'handler' => 'elements',
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'text' => array(
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array(
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'name' => 'div',
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'attributes' => array(
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'class' => 'mxgraph w-full border',
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'data-mxgraph' => json_encode(array(
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'highlight' => '#0000ff',
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'target' => 'blank',
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'nav' => true,
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'resize' => true,
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'toolbar' => 'zoom layers lightbox',
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'url' => $file,
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))
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),
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'rawHtml' => '',
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),
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array(
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'name' => 'script',
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'attributes' => array(
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'type' => 'text/javascript',
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'src' => 'https://viewer.diagrams.net/js/viewer-static.min.js'
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),
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'rawHtml' => '',
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),
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),
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),
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);
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}
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}
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// Mermaid
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protected function BlockMermaid($line, $block)
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{
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if (preg_match('/^:::\s*mermaid/', $line['text'], $matches))
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{
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return array(
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'char' => $line['text'][0],
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'element' => array(
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'name' => 'div',
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'attributes' => array(
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'class' => 'mermaid',
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),
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'rawHtml' => "\n",
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),
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);
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}
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}
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protected function BlockMermaidContinue($line, $block)
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{
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if (isset($block['complete']))
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{
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return;
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}
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// A blank newline has occurred.
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if (isset($block['interrupted']))
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{
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unset($block['interrupted']);
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}
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// Check for end of the block.
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if (preg_match('/^:::/', $line['text']))
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{
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$block['complete'] = true;
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return $block;
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}
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$block['element']['rawHtml'] .= $line['body'] . "\n";
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return $block;
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}
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protected function BlockMermaidComplete($block)
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{
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return $block;
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}
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// Chart JS
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protected function BlockChart($line, $block)
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{
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if (preg_match('/^:::\s*chart/', $line['text'], $matches))
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{
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return array(
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'char' => $line['text'][0],
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'element' => array(
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'name' => 'canvas',
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'attributes' => array(
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'class' => 'chartjs',
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),
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'rawHtml' => "\n",
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),
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);
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}
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}
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protected function BlockChartContinue($line, $block)
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{
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if (isset($block['complete']))
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{
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return;
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}
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// A blank newline has occurred.
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if (isset($block['interrupted']))
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{
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unset($block['interrupted']);
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}
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// Check for end of the block.
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if (preg_match('/^:::/', $line['text']))
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{
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$block['complete'] = true;
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return $block;
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}
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$block['element']['rawHtml'] .= $line['body'] . "\n";
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return $block;
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}
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protected function BlockChartComplete($block)
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{
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return $block;
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}
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} |