Edit File by line

<?php

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# Parsedown

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# http://parsedown.org

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# (c) Emanuil Rusev

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# http://erusev.com

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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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if (! class_exists( 'Redux_Parsedown' ) ) {

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class Redux_Parsedown

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{

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# ~

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const version = '1.8.0-beta-7';

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# ~

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function text($text)

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{

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$Elements = $this->textElements($text);

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# convert to markup

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$markup = $this->elements($Elements);

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# trim line breaks

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$markup = trim($markup, "\n");

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return $markup;

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}

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protected function textElements($text)

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{

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# make sure no definitions are set

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$this->DefinitionData = array();

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# standardize line breaks

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$text = str_replace(array("\r\n", "\r"), "\n", $text);

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# remove surrounding line breaks

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$text = trim($text, "\n");

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# split text into lines

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$lines = explode("\n", $text);

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# iterate through lines to identify blocks

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return $this->linesElements($lines);

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}

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# Setters

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function setBreaksEnabled($breaksEnabled)

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{

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$this->breaksEnabled = $breaksEnabled;

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return $this;

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}

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protected $breaksEnabled;

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function setMarkupEscaped($markupEscaped)

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{

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$this->markupEscaped = $markupEscaped;

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return $this;

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}

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protected $markupEscaped;

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function setUrlsLinked($urlsLinked)

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{

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$this->urlsLinked = $urlsLinked;

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return $this;

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}

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protected $urlsLinked = true;

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function setSafeMode($safeMode)

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{

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$this->safeMode = (bool) $safeMode;

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return $this;

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}

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protected $safeMode;

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function setStrictMode($strictMode)

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{

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$this->strictMode = (bool) $strictMode;

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return $this;

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}

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protected $strictMode;

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protected $safeLinksWhitelist = array(

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'http://',

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'https://',

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'ftp://',

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'ftps://',

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'mailto:',

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'tel:',

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'data:image/png;base64,',

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'data:image/gif;base64,',

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'data:image/jpeg;base64,',

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'irc:',

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'ircs:',

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'git:',

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'ssh:',

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'news:',

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'steam:',

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);

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# Lines

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protected $BlockTypes = array(

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'#' => array('Header'),

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'*' => array('Rule', 'List'),

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'+' => array('List'),

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'-' => array('SetextHeader', 'Table', 'Rule', 'List'),

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'0' => array('List'),

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'1' => array('List'),

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'2' => array('List'),

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'3' => array('List'),

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'4' => array('List'),

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'5' => array('List'),

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'6' => array('List'),

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'7' => array('List'),

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'8' => array('List'),

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'9' => array('List'),

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':' => array('Table'),

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'<' => array('Comment', 'Markup'),

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'=' => array('SetextHeader'),

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'>' => array('Quote'),

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'[' => array('Reference'),

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'_' => array('Rule'),

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'`' => array('FencedCode'),

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'|' => array('Table'),

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'~' => array('FencedCode'),

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);

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# ~

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protected $unmarkedBlockTypes = array(

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'Code',

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);

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# Blocks

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protected function lines(array $lines)

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{

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return $this->elements($this->linesElements($lines));

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}

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protected function linesElements(array $lines)

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{

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$Elements = array();

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$CurrentBlock = null;

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foreach ($lines as $line)

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{

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if (chop($line) === '')

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{

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if (isset($CurrentBlock))

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{

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$CurrentBlock['interrupted'] = (isset($CurrentBlock['interrupted'])

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? $CurrentBlock['interrupted'] + 1 : 1

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);

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}

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continue;

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}

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while (($beforeTab = strstr($line, "\t", true)) !== false)

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{

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$shortage = 4 - mb_strlen($beforeTab, 'utf-8') % 4;

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$line = $beforeTab

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. str_repeat(' ', $shortage)

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. substr($line, strlen($beforeTab) + 1)

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;

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}

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$indent = strspn($line, ' ');

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$text = $indent > 0 ? substr($line, $indent) : $line;

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# ~

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$Line = array('body' => $line, 'indent' => $indent, 'text' => $text);

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# ~

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if (isset($CurrentBlock['continuable']))

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{

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$methodName = 'block' . $CurrentBlock['type'] . 'Continue';

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$Block = $this->$methodName($Line, $CurrentBlock);

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if (isset($Block))

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{

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$CurrentBlock = $Block;

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continue;

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}

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else

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{

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if ($this->isBlockCompletable($CurrentBlock['type']))

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{

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$methodName = 'block' . $CurrentBlock['type'] . 'Complete';

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$CurrentBlock = $this->$methodName($CurrentBlock);

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}

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}

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}

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# ~

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$marker = $text[0];

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# ~

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$blockTypes = $this->unmarkedBlockTypes;

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if (isset($this->BlockTypes[$marker]))

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{

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foreach ($this->BlockTypes[$marker] as $blockType)

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{

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$blockTypes []= $blockType;

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}

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}

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# ~

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foreach ($blockTypes as $blockType)

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{

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$Block = $this->{"block$blockType"}($Line, $CurrentBlock);

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if (isset($Block))

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{

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$Block['type'] = $blockType;

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if ( ! isset($Block['identified']))

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{

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if (isset($CurrentBlock))

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{

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$Elements[] = $this->extractElement($CurrentBlock);

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}

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$Block['identified'] = true;

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}

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if ($this->isBlockContinuable($blockType))

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{

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$Block['continuable'] = true;

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}

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$CurrentBlock = $Block;

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continue 2;

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}

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}

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# ~

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if (isset($CurrentBlock) and $CurrentBlock['type'] === 'Paragraph')

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{

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$Block = $this->paragraphContinue($Line, $CurrentBlock);

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}

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if (isset($Block))

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{

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$CurrentBlock = $Block;

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}

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else

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{

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if (isset($CurrentBlock))

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{

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$Elements[] = $this->extractElement($CurrentBlock);

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}

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$CurrentBlock = $this->paragraph($Line);

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$CurrentBlock['identified'] = true;

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}

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}

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# ~

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if (isset($CurrentBlock['continuable']) and $this->isBlockCompletable($CurrentBlock['type']))

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{

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$methodName = 'block' . $CurrentBlock['type'] . 'Complete';

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$CurrentBlock = $this->$methodName($CurrentBlock);

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}

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# ~

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if (isset($CurrentBlock))

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{

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$Elements[] = $this->extractElement($CurrentBlock);

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}

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# ~

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return $Elements;

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}

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protected function extractElement(array $Component)

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{

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if ( ! isset($Component['element']))

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{

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if (isset($Component['markup']))

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{

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$Component['element'] = array('rawHtml' => $Component['markup']);

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}

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elseif (isset($Component['hidden']))

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{

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$Component['element'] = array();

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}

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}

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return $Component['element'];

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}

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protected function isBlockContinuable($Type)

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{

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return method_exists($this, 'block' . $Type . 'Continue');

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}

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protected function isBlockCompletable($Type)

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{

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return method_exists($this, 'block' . $Type . 'Complete');

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}

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# Code

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protected function blockCode($Line, $Block = null)

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{

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if (isset($Block) and $Block['type'] === 'Paragraph' and ! isset($Block['interrupted']))

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{

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return;

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}

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if ($Line['indent'] >= 4)

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{

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$text = substr($Line['body'], 4);

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$Block = array(

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'element' => array(

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'name' => 'pre',

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'element' => array(

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'name' => 'code',

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'text' => $text,

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);

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return $Block;

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}

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}

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protected function blockCodeContinue($Line, $Block)

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{

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if ($Line['indent'] >= 4)

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{

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if (isset($Block['interrupted']))

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{

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$Block['element']['element']['text'] .= str_repeat("\n", $Block['interrupted']);

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unset($Block['interrupted']);

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}

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$Block['element']['element']['text'] .= "\n";

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$text = substr($Line['body'], 4);

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$Block['element']['element']['text'] .= $text;

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return $Block;

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}

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}

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protected function blockCodeComplete($Block)

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{

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return $Block;

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}

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# Comment

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protected function blockComment($Line)

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{

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if ($this->markupEscaped or $this->safeMode)

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{

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return;

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}

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if (strpos($Line['text'], '<!--') === 0)

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{

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$Block = array(

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'element' => array(

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'rawHtml' => $Line['body'],

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'autobreak' => true,

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);

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if (strpos($Line['text'], '-->') !== false)

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{

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$Block['closed'] = true;

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}

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return $Block;

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}

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}

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protected function blockCommentContinue($Line, array $Block)

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{

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if (isset($Block['closed']))

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{

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return;

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}

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$Block['element']['rawHtml'] .= "\n" . $Line['body'];

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if (strpos($Line['text'], '-->') !== false)

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{

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$Block['closed'] = true;

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}

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return $Block;

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}

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# Fenced Code

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protected function blockFencedCode($Line)

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{

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$marker = $Line['text'][0];

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$openerLength = strspn($Line['text'], $marker);

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if ($openerLength < 3)

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{

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return;

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}

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$infostring = trim(substr($Line['text'], $openerLength), "\t ");

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if (strpos($infostring, '`') !== false)

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{

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return;

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}

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$Element = array(

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'name' => 'code',

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'text' => '',

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);

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if ($infostring !== '')

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{

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/**

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* https://www.w3.org/TR/2011/WD-html5-20110525/elements.html#classes

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* Every HTML element may have a class attribute specified.

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* The attribute, if specified, must have a value that is a set

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* of space-separated tokens representing the various classes

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* that the element belongs to.

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* [...]

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* The space characters, for the purposes of this specification,

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* are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab),

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* U+000A LINE FEED (LF), U+000C FORM FEED (FF), and

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* U+000D CARRIAGE RETURN (CR).

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$language = substr($infostring, 0, strcspn($infostring, " \t\n\f\r"));

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$Element['attributes'] = array('class' => "language-$language");

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}

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$Block = array(

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'char' => $marker,

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'openerLength' => $openerLength,

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'element' => array(

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'name' => 'pre',

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'element' => $Element,

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);

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return $Block;

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