2144 lines
57 KiB
PHP
2144 lines
57 KiB
PHP
<?php
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header('Access-Control-Allow-Origin: *');
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ini_set('display_errors', 1);
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ini_set('display_startup_errors', 1);
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error_reporting(E_ALL);
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/****** PARSE DOWN ********/
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class 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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#
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# Setters
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#
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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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#
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# Lines
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#
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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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#
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# Blocks
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#
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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 []= $blockType;
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}
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}
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#
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# ~
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foreach ($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' . $Type . 'Complete');
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}
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#
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# Code
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protected function blockCode($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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),
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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 $Block;
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}
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#
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# Comment
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protected function blockComment($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' => $Line['body'],
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'autobreak' => true,
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),
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);
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if (strpos($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 $Block;
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}
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#
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# Fenced Code
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protected function blockFencedCode($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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*/
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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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);
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return $Block;
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}
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protected function blockFencedCodeContinue($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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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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if (($len = strspn($Line['text'], $Block['char'])) >= $Block['openerLength']
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and chop(substr($Line['text'], $len), ' ') === ''
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) {
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$Block['element']['element']['text'] = substr($Block['element']['element']['text'], 1);
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$Block['complete'] = true;
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return $Block;
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}
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$Block['element']['element']['text'] .= "\n" . $Line['body'];
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return $Block;
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}
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protected function blockFencedCodeComplete($Block)
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{
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return $Block;
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}
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#
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# Header
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protected function blockHeader($Line)
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{
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$level = strspn($Line['text'], '#');
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if ($level > 6)
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{
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return;
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}
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$text = trim($Line['text'], '#');
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if ($this->strictMode and isset($text[0]) and $text[0] !== ' ')
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{
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return;
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}
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$text = trim($text, ' ');
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$Block = array(
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'element' => array(
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'name' => 'h' . $level,
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'handler' => array(
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'function' => 'lineElements',
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'argument' => $text,
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'destination' => 'elements',
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)
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),
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);
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return $Block;
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}
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#
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# List
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protected function blockList($Line, array $CurrentBlock = null)
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{
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list($name, $pattern) = $Line['text'][0] <= '-' ? array('ul', '[*+-]') : array('ol', '[0-9]{1,9}+[.\)]');
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if (preg_match('/^('.$pattern.'([ ]++|$))(.*+)/', $Line['text'], $matches))
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{
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$contentIndent = strlen($matches[2]);
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|
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if ($contentIndent >= 5)
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{
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$contentIndent -= 1;
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$matches[1] = substr($matches[1], 0, -$contentIndent);
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$matches[3] = str_repeat(' ', $contentIndent) . $matches[3];
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}
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elseif ($contentIndent === 0)
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{
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$matches[1] .= ' ';
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}
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$markerWithoutWhitespace = strstr($matches[1], ' ', true);
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$Block = array(
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'indent' => $Line['indent'],
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'pattern' => $pattern,
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'data' => array(
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'type' => $name,
|
|
'marker' => $matches[1],
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'markerType' => ($name === 'ul' ? $markerWithoutWhitespace : substr($markerWithoutWhitespace, -1)),
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|
),
|
|
'element' => array(
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'name' => $name,
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'elements' => array(),
|
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),
|
|
);
|
|
$Block['data']['markerTypeRegex'] = preg_quote($Block['data']['markerType'], '/');
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|
|
|
if ($name === 'ol')
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{
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$listStart = ltrim(strstr($matches[1], $Block['data']['markerType'], true), '0') ?: '0';
|
|
|
|
if ($listStart !== '1')
|
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{
|
|
if (
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isset($CurrentBlock)
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and $CurrentBlock['type'] === 'Paragraph'
|
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and ! isset($CurrentBlock['interrupted'])
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) {
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return;
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}
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$Block['element']['attributes'] = array('start' => $listStart);
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}
|
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}
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$Block['li'] = array(
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'name' => 'li',
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|
'handler' => array(
|
|
'function' => 'li',
|
|
'argument' => !empty($matches[3]) ? array($matches[3]) : array(),
|
|
'destination' => 'elements'
|
|
)
|
|
);
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$Block['element']['elements'] []= & $Block['li'];
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return $Block;
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}
|
|
}
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|
|
protected function blockListContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']) and empty($Block['li']['handler']['argument']))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
$requiredIndent = ($Block['indent'] + strlen($Block['data']['marker']));
|
|
|
|
if ($Line['indent'] < $requiredIndent
|
|
and (
|
|
(
|
|
$Block['data']['type'] === 'ol'
|
|
and preg_match('/^[0-9]++'.$Block['data']['markerTypeRegex'].'(?:[ ]++(.*)|$)/', $Line['text'], $matches)
|
|
) or (
|
|
$Block['data']['type'] === 'ul'
|
|
and preg_match('/^'.$Block['data']['markerTypeRegex'].'(?:[ ]++(.*)|$)/', $Line['text'], $matches)
|
|
)
|
|
)
|
|
) {
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
$Block['li']['handler']['argument'] []= '';
|
|
|
|
$Block['loose'] = true;
|
|
|
|
unset($Block['interrupted']);
|
|
}
|
|
|
|
unset($Block['li']);
|
|
|
|
$text = isset($matches[1]) ? $matches[1] : '';
|
|
|
|
$Block['indent'] = $Line['indent'];
|
|
|
|
$Block['li'] = array(
|
|
'name' => 'li',
|
|
'handler' => array(
|
|
'function' => 'li',
|
|
'argument' => array($text),
|
|
'destination' => 'elements'
|
|
)
|
|
);
|
|
|
|
$Block['element']['elements'] []= & $Block['li'];
|
|
|
|
return $Block;
|
|
}
|
|
elseif ($Line['indent'] < $requiredIndent and $this->blockList($Line))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if ($Line['text'][0] === '[' and $this->blockReference($Line))
|
|
{
|
|
return $Block;
|
|
}
|
|
|
|
if ($Line['indent'] >= $requiredIndent)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
$Block['li']['handler']['argument'] []= '';
|
|
|
|
$Block['loose'] = true;
|
|
|
|
unset($Block['interrupted']);
|
|
}
|
|
|
|
$text = substr($Line['body'], $requiredIndent);
|
|
|
|
$Block['li']['handler']['argument'] []= $text;
|
|
|
|
return $Block;
|
|
}
|
|
|
|
if ( ! isset($Block['interrupted']))
|
|
{
|
|
$text = preg_replace('/^[ ]{0,'.$requiredIndent.'}+/', '', $Line['body']);
|
|
|
|
$Block['li']['handler']['argument'] []= $text;
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockListComplete(array $Block)
|
|
{
|
|
if (isset($Block['loose']))
|
|
{
|
|
foreach ($Block['element']['elements'] as &$li)
|
|
{
|
|
if (end($li['handler']['argument']) !== '')
|
|
{
|
|
$li['handler']['argument'] []= '';
|
|
}
|
|
}
|
|
}
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# Quote
|
|
|
|
protected function blockQuote($Line)
|
|
{
|
|
if (preg_match('/^>[ ]?+(.*+)/', $Line['text'], $matches))
|
|
{
|
|
$Block = array(
|
|
'element' => array(
|
|
'name' => 'blockquote',
|
|
'handler' => array(
|
|
'function' => 'linesElements',
|
|
'argument' => (array) $matches[1],
|
|
'destination' => 'elements',
|
|
)
|
|
),
|
|
);
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockQuoteContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Line['text'][0] === '>' and preg_match('/^>[ ]?+(.*+)/', $Line['text'], $matches))
|
|
{
|
|
$Block['element']['handler']['argument'] []= $matches[1];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
if ( ! isset($Block['interrupted']))
|
|
{
|
|
$Block['element']['handler']['argument'] []= $Line['text'];
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Rule
|
|
|
|
protected function blockRule($Line)
|
|
{
|
|
$marker = $Line['text'][0];
|
|
|
|
if (substr_count($Line['text'], $marker) >= 3 and chop($Line['text'], " $marker") === '')
|
|
{
|
|
$Block = array(
|
|
'element' => array(
|
|
'name' => 'hr',
|
|
),
|
|
);
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Setext
|
|
|
|
protected function blockSetextHeader($Line, array $Block = null)
|
|
{
|
|
if ( ! isset($Block) or $Block['type'] !== 'Paragraph' or isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Line['indent'] < 4 and chop(chop($Line['text'], ' '), $Line['text'][0]) === '')
|
|
{
|
|
$Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Markup
|
|
|
|
protected function blockMarkup($Line)
|
|
{
|
|
if ($this->markupEscaped or $this->safeMode)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (preg_match('/^<[\/]?+(\w*)(?:[ ]*+'.$this->regexHtmlAttribute.')*+[ ]*+(\/)?>/', $Line['text'], $matches))
|
|
{
|
|
$element = strtolower($matches[1]);
|
|
|
|
if (in_array($element, $this->textLevelElements))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Block = array(
|
|
'name' => $matches[1],
|
|
'element' => array(
|
|
'rawHtml' => $Line['text'],
|
|
'autobreak' => true,
|
|
),
|
|
);
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockMarkupContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['closed']) or isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Block['element']['rawHtml'] .= "\n" . $Line['body'];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# Reference
|
|
|
|
protected function blockReference($Line)
|
|
{
|
|
if (strpos($Line['text'], ']') !== false
|
|
and preg_match('/^\[(.+?)\]:[ ]*+<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*+$/', $Line['text'], $matches)
|
|
) {
|
|
$id = strtolower($matches[1]);
|
|
|
|
$Data = array(
|
|
'url' => $matches[2],
|
|
'title' => isset($matches[3]) ? $matches[3] : null,
|
|
);
|
|
|
|
$this->DefinitionData['Reference'][$id] = $Data;
|
|
|
|
$Block = array(
|
|
'element' => array(),
|
|
);
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# Table
|
|
|
|
protected function blockTable($Line, array $Block = null)
|
|
{
|
|
if ( ! isset($Block) or $Block['type'] !== 'Paragraph' or isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (
|
|
strpos($Block['element']['handler']['argument'], '|') === false
|
|
and strpos($Line['text'], '|') === false
|
|
and strpos($Line['text'], ':') === false
|
|
or strpos($Block['element']['handler']['argument'], "\n") !== false
|
|
) {
|
|
return;
|
|
}
|
|
|
|
if (chop($Line['text'], ' -:|') !== '')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$alignments = array();
|
|
|
|
$divider = $Line['text'];
|
|
|
|
$divider = trim($divider);
|
|
$divider = trim($divider, '|');
|
|
|
|
$dividerCells = explode('|', $divider);
|
|
|
|
foreach ($dividerCells as $dividerCell)
|
|
{
|
|
$dividerCell = trim($dividerCell);
|
|
|
|
if ($dividerCell === '')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$alignment = null;
|
|
|
|
if ($dividerCell[0] === ':')
|
|
{
|
|
$alignment = 'left';
|
|
}
|
|
|
|
if (substr($dividerCell, - 1) === ':')
|
|
{
|
|
$alignment = $alignment === 'left' ? 'center' : 'right';
|
|
}
|
|
|
|
$alignments []= $alignment;
|
|
}
|
|
|
|
# ~
|
|
|
|
$HeaderElements = array();
|
|
|
|
$header = $Block['element']['handler']['argument'];
|
|
|
|
$header = trim($header);
|
|
$header = trim($header, '|');
|
|
|
|
$headerCells = explode('|', $header);
|
|
|
|
if (count($headerCells) !== count($alignments))
|
|
{
|
|
return;
|
|
}
|
|
|
|
foreach ($headerCells as $index => $headerCell)
|
|
{
|
|
$headerCell = trim($headerCell);
|
|
|
|
$HeaderElement = array(
|
|
'name' => 'th',
|
|
'handler' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => $headerCell,
|
|
'destination' => 'elements',
|
|
)
|
|
);
|
|
|
|
if (isset($alignments[$index]))
|
|
{
|
|
$alignment = $alignments[$index];
|
|
|
|
$HeaderElement['attributes'] = array(
|
|
'style' => "text-align: $alignment;",
|
|
);
|
|
}
|
|
|
|
$HeaderElements []= $HeaderElement;
|
|
}
|
|
|
|
# ~
|
|
|
|
$Block = array(
|
|
'alignments' => $alignments,
|
|
'identified' => true,
|
|
'element' => array(
|
|
'name' => 'table',
|
|
'elements' => array(),
|
|
),
|
|
);
|
|
|
|
$Block['element']['elements'] []= array(
|
|
'name' => 'thead',
|
|
);
|
|
|
|
$Block['element']['elements'] []= array(
|
|
'name' => 'tbody',
|
|
'elements' => array(),
|
|
);
|
|
|
|
$Block['element']['elements'][0]['elements'] []= array(
|
|
'name' => 'tr',
|
|
'elements' => $HeaderElements,
|
|
);
|
|
|
|
return $Block;
|
|
}
|
|
|
|
protected function blockTableContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (count($Block['alignments']) === 1 or $Line['text'][0] === '|' or strpos($Line['text'], '|'))
|
|
{
|
|
$Elements = array();
|
|
|
|
$row = $Line['text'];
|
|
|
|
$row = trim($row);
|
|
$row = trim($row, '|');
|
|
|
|
preg_match_all('/(?:(\\\\[|])|[^|`]|`[^`]++`|`)++/', $row, $matches);
|
|
|
|
$cells = array_slice($matches[0], 0, count($Block['alignments']));
|
|
|
|
foreach ($cells as $index => $cell)
|
|
{
|
|
$cell = trim($cell);
|
|
|
|
$Element = array(
|
|
'name' => 'td',
|
|
'handler' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => $cell,
|
|
'destination' => 'elements',
|
|
)
|
|
);
|
|
|
|
if (isset($Block['alignments'][$index]))
|
|
{
|
|
$Element['attributes'] = array(
|
|
'style' => 'text-align: ' . $Block['alignments'][$index] . ';',
|
|
);
|
|
}
|
|
|
|
$Elements []= $Element;
|
|
}
|
|
|
|
$Element = array(
|
|
'name' => 'tr',
|
|
'elements' => $Elements,
|
|
);
|
|
|
|
$Block['element']['elements'][1]['elements'] []= $Element;
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# ~
|
|
#
|
|
|
|
protected function paragraph($Line)
|
|
{
|
|
return array(
|
|
'type' => 'Paragraph',
|
|
'element' => array(
|
|
'name' => 'p',
|
|
'handler' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => $Line['text'],
|
|
'destination' => 'elements',
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
protected function paragraphContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Block['element']['handler']['argument'] .= "\n".$Line['text'];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# Inline Elements
|
|
#
|
|
|
|
protected $InlineTypes = array(
|
|
'!' => array('Image'),
|
|
'&' => array('SpecialCharacter'),
|
|
'*' => array('Emphasis'),
|
|
':' => array('Url'),
|
|
'<' => array('UrlTag', 'EmailTag', 'Markup'),
|
|
'[' => array('Link'),
|
|
'_' => array('Emphasis'),
|
|
'`' => array('Code'),
|
|
'~' => array('Strikethrough'),
|
|
'\\' => array('EscapeSequence'),
|
|
);
|
|
|
|
# ~
|
|
|
|
protected $inlineMarkerList = '!*_&[:<`~\\';
|
|
|
|
#
|
|
# ~
|
|
#
|
|
|
|
public function line($text, $nonNestables = array())
|
|
{
|
|
return $this->elements($this->lineElements($text, $nonNestables));
|
|
}
|
|
|
|
protected function lineElements($text, $nonNestables = array())
|
|
{
|
|
# standardize line breaks
|
|
$text = str_replace(array("\r\n", "\r"), "\n", $text);
|
|
|
|
$Elements = array();
|
|
|
|
$nonNestables = (empty($nonNestables)
|
|
? array()
|
|
: array_combine($nonNestables, $nonNestables)
|
|
);
|
|
|
|
# $excerpt is based on the first occurrence of a marker
|
|
|
|
while ($excerpt = strpbrk($text, $this->inlineMarkerList))
|
|
{
|
|
$marker = $excerpt[0];
|
|
|
|
$markerPosition = strlen($text) - strlen($excerpt);
|
|
|
|
$Excerpt = array('text' => $excerpt, 'context' => $text);
|
|
|
|
foreach ($this->InlineTypes[$marker] as $inlineType)
|
|
{
|
|
# check to see if the current inline type is nestable in the current context
|
|
|
|
if (isset($nonNestables[$inlineType]))
|
|
{
|
|
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
|
|
|
|
|
|
$Inline['element']['nonNestables'] = isset($Inline['element']['nonNestables'])
|
|
? array_merge($Inline['element']['nonNestables'], $nonNestables)
|
|
: $nonNestables
|
|
;
|
|
|
|
# the text that comes before the inline
|
|
$unmarkedText = substr($text, 0, $Inline['position']);
|
|
|
|
# compile the unmarked text
|
|
$InlineText = $this->inlineText($unmarkedText);
|
|
$Elements[] = $InlineText['element'];
|
|
|
|
# compile the inline
|
|
$Elements[] = $this->extractElement($Inline);
|
|
|
|
# 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);
|
|
|
|
$InlineText = $this->inlineText($unmarkedText);
|
|
$Elements[] = $InlineText['element'];
|
|
|
|
$text = substr($text, $markerPosition + 1);
|
|
}
|
|
|
|
$InlineText = $this->inlineText($text);
|
|
$Elements[] = $InlineText['element'];
|
|
|
|
foreach ($Elements as &$Element)
|
|
{
|
|
if ( ! isset($Element['autobreak']))
|
|
{
|
|
$Element['autobreak'] = false;
|
|
}
|
|
}
|
|
|
|
return $Elements;
|
|
}
|
|
|
|
#
|
|
# ~
|
|
#
|
|
|
|
protected function inlineText($text)
|
|
{
|
|
$Inline = array(
|
|
'extent' => strlen($text),
|
|
'element' => array(),
|
|
);
|
|
|
|
$Inline['element']['elements'] = self::pregReplaceElements(
|
|
$this->breaksEnabled ? '/[ ]*+\n/' : '/(?:[ ]*+\\\\|[ ]{2,}+)\n/',
|
|
array(
|
|
array('name' => 'br'),
|
|
array('text' => "\n"),
|
|
),
|
|
$text
|
|
);
|
|
|
|
return $Inline;
|
|
}
|
|
|
|
protected function inlineCode($Excerpt)
|
|
{
|
|
$marker = $Excerpt['text'][0];
|
|
|
|
if (preg_match('/^(['.$marker.']++)[ ]*+(.+?)[ ]*+(?<!['.$marker.'])\1(?!'.$marker.')/s', $Excerpt['text'], $matches))
|
|
{
|
|
$text = $matches[2];
|
|
$text = preg_replace('/[ ]*+\n/', ' ', $text);
|
|
|
|
return array(
|
|
'extent' => strlen($matches[0]),
|
|
'element' => array(
|
|
'name' => 'code',
|
|
'text' => $text,
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
protected function inlineEmailTag($Excerpt)
|
|
{
|
|
$hostnameLabel = '[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?';
|
|
|
|
$commonMarkEmail = '[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]++@'
|
|
. $hostnameLabel . '(?:\.' . $hostnameLabel . ')*';
|
|
|
|
if (strpos($Excerpt['text'], '>') !== false
|
|
and preg_match("/^<((mailto:)?$commonMarkEmail)>/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' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => $matches[1],
|
|
'destination' => 'elements',
|
|
)
|
|
),
|
|
);
|
|
}
|
|
|
|
protected function inlineEscapeSequence($Excerpt)
|
|
{
|
|
if (isset($Excerpt['text'][1]) and in_array($Excerpt['text'][1], $this->specialCharacters))
|
|
{
|
|
return array(
|
|
'element' => array('rawHtml' => $Excerpt['text'][1]),
|
|
'extent' => 2,
|
|
);
|
|
}
|
|
}
|
|
|
|
protected function inlineImage($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']['handler']['argument'],
|
|
),
|
|
'autobreak' => true,
|
|
),
|
|
);
|
|
|
|
$Inline['element']['attributes'] += $Link['element']['attributes'];
|
|
|
|
unset($Inline['element']['attributes']['href']);
|
|
|
|
return $Inline;
|
|
}
|
|
|
|
protected function inlineLink($Excerpt)
|
|
{
|
|
$Element = array(
|
|
'name' => 'a',
|
|
'handler' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => null,
|
|
'destination' => 'elements',
|
|
),
|
|
'nonNestables' => array('Url', 'Link'),
|
|
'attributes' => array(
|
|
'href' => null,
|
|
'title' => null,
|
|
),
|
|
);
|
|
|
|
$extent = 0;
|
|
|
|
$remainder = $Excerpt['text'];
|
|
|
|
if (preg_match('/\[((?:[^][]++|(?R))*+)\]/', $remainder, $matches))
|
|
{
|
|
$Element['handler']['argument'] = $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['handler']['argument'];
|
|
$definition = strtolower($definition);
|
|
|
|
$extent += strlen($matches[0]);
|
|
}
|
|
else
|
|
{
|
|
$definition = strtolower($Element['handler']['argument']);
|
|
}
|
|
|
|
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(
|
|
'element' => array('rawHtml' => $matches[0]),
|
|
'extent' => strlen($matches[0]),
|
|
);
|
|
}
|
|
|
|
if ($Excerpt['text'][1] === '!' and preg_match('/^<!---?[^>-](?:-?+[^-])*-->/s', $Excerpt['text'], $matches))
|
|
{
|
|
return array(
|
|
'element' => array('rawHtml' => $matches[0]),
|
|
'extent' => strlen($matches[0]),
|
|
);
|
|
}
|
|
|
|
if ($Excerpt['text'][1] !== ' ' and preg_match('/^<\w[\w-]*+(?:[ ]*+'.$this->regexHtmlAttribute.')*+[ ]*+\/?>/s', $Excerpt['text'], $matches))
|
|
{
|
|
return array(
|
|
'element' => array('rawHtml' => $matches[0]),
|
|
'extent' => strlen($matches[0]),
|
|
);
|
|
}
|
|
}
|
|
|
|
protected function inlineSpecialCharacter($Excerpt)
|
|
{
|
|
if (substr($Excerpt['text'], 1, 1) !== ' ' and strpos($Excerpt['text'], ';') !== false
|
|
and preg_match('/^&(#?+[0-9a-zA-Z]++);/', $Excerpt['text'], $matches)
|
|
) {
|
|
return array(
|
|
'element' => array('rawHtml' => '&' . $matches[1] . ';'),
|
|
'extent' => strlen($matches[0]),
|
|
);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
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',
|
|
'handler' => array(
|
|
'function' => 'lineElements',
|
|
'argument' => $matches[1],
|
|
'destination' => 'elements',
|
|
)
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
protected function inlineUrl($Excerpt)
|
|
{
|
|
if ($this->urlsLinked !== true or ! isset($Excerpt['text'][2]) or $Excerpt['text'][2] !== '/')
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (strpos($Excerpt['context'], 'http') !== false
|
|
and 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)
|
|
{
|
|
$Inline = $this->inlineText($text);
|
|
return $this->element($Inline['element']);
|
|
}
|
|
|
|
#
|
|
# Handlers
|
|
#
|
|
|
|
protected function handle(array $Element)
|
|
{
|
|
if (isset($Element['handler']))
|
|
{
|
|
if (!isset($Element['nonNestables']))
|
|
{
|
|
$Element['nonNestables'] = array();
|
|
}
|
|
|
|
if (is_string($Element['handler']))
|
|
{
|
|
$function = $Element['handler'];
|
|
$argument = $Element['text'];
|
|
unset($Element['text']);
|
|
$destination = 'rawHtml';
|
|
}
|
|
else
|
|
{
|
|
$function = $Element['handler']['function'];
|
|
$argument = $Element['handler']['argument'];
|
|
$destination = $Element['handler']['destination'];
|
|
}
|
|
|
|
$Element[$destination] = $this->{$function}($argument, $Element['nonNestables']);
|
|
|
|
if ($destination === 'handler')
|
|
{
|
|
$Element = $this->handle($Element);
|
|
}
|
|
|
|
unset($Element['handler']);
|
|
}
|
|
|
|
return $Element;
|
|
}
|
|
|
|
protected function handleElementRecursive(array $Element)
|
|
{
|
|
return $this->elementApplyRecursive(array($this, 'handle'), $Element);
|
|
}
|
|
|
|
protected function handleElementsRecursive(array $Elements)
|
|
{
|
|
return $this->elementsApplyRecursive(array($this, 'handle'), $Elements);
|
|
}
|
|
|
|
protected function elementApplyRecursive($closure, array $Element)
|
|
{
|
|
$Element = call_user_func($closure, $Element);
|
|
|
|
if (isset($Element['elements']))
|
|
{
|
|
$Element['elements'] = $this->elementsApplyRecursive($closure, $Element['elements']);
|
|
}
|
|
elseif (isset($Element['element']))
|
|
{
|
|
$Element['element'] = $this->elementApplyRecursive($closure, $Element['element']);
|
|
}
|
|
|
|
return $Element;
|
|
}
|
|
|
|
protected function elementApplyRecursiveDepthFirst($closure, array $Element)
|
|
{
|
|
if (isset($Element['elements']))
|
|
{
|
|
$Element['elements'] = $this->elementsApplyRecursiveDepthFirst($closure, $Element['elements']);
|
|
}
|
|
elseif (isset($Element['element']))
|
|
{
|
|
$Element['element'] = $this->elementsApplyRecursiveDepthFirst($closure, $Element['element']);
|
|
}
|
|
|
|
$Element = call_user_func($closure, $Element);
|
|
|
|
return $Element;
|
|
}
|
|
|
|
protected function elementsApplyRecursive($closure, array $Elements)
|
|
{
|
|
foreach ($Elements as &$Element)
|
|
{
|
|
$Element = $this->elementApplyRecursive($closure, $Element);
|
|
}
|
|
|
|
return $Elements;
|
|
}
|
|
|
|
protected function elementsApplyRecursiveDepthFirst($closure, array $Elements)
|
|
{
|
|
foreach ($Elements as &$Element)
|
|
{
|
|
$Element = $this->elementApplyRecursiveDepthFirst($closure, $Element);
|
|
}
|
|
|
|
return $Elements;
|
|
}
|
|
|
|
protected function element(array $Element)
|
|
{
|
|
if ($this->safeMode)
|
|
{
|
|
$Element = $this->sanitiseElement($Element);
|
|
}
|
|
|
|
# identity map if element has no handler
|
|
$Element = $this->handle($Element);
|
|
|
|
$hasName = isset($Element['name']);
|
|
|
|
$markup = '';
|
|
|
|
if ($hasName)
|
|
{
|
|
$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;
|
|
}
|
|
|
|
$hasContent = isset($text) || isset($Element['element']) || isset($Element['elements']);
|
|
|
|
if ($hasContent)
|
|
{
|
|
$markup .= $hasName ? '>' : '';
|
|
|
|
if (isset($Element['elements']))
|
|
{
|
|
$markup .= $this->elements($Element['elements']);
|
|
}
|
|
elseif (isset($Element['element']))
|
|
{
|
|
$markup .= $this->element($Element['element']);
|
|
}
|
|
else
|
|
{
|
|
if (!$permitRawHtml)
|
|
{
|
|
$markup .= self::escape($text, true);
|
|
}
|
|
else
|
|
{
|
|
$markup .= $text;
|
|
}
|
|
}
|
|
|
|
$markup .= $hasName ? '</' . $Element['name'] . '>' : '';
|
|
}
|
|
elseif ($hasName)
|
|
{
|
|
$markup .= ' />';
|
|
}
|
|
|
|
return $markup;
|
|
}
|
|
|
|
protected function elements(array $Elements)
|
|
{
|
|
$markup = '';
|
|
|
|
$autoBreak = true;
|
|
|
|
foreach ($Elements as $Element)
|
|
{
|
|
if (empty($Element))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
$autoBreakNext = (isset($Element['autobreak'])
|
|
? $Element['autobreak'] : isset($Element['name'])
|
|
);
|
|
// (autobreak === false) covers both sides of an element
|
|
$autoBreak = !$autoBreak ? $autoBreak : $autoBreakNext;
|
|
|
|
$markup .= ($autoBreak ? "\n" : '') . $this->element($Element);
|
|
$autoBreak = $autoBreakNext;
|
|
}
|
|
|
|
$markup .= $autoBreak ? "\n" : '';
|
|
|
|
return $markup;
|
|
}
|
|
|
|
# ~
|
|
|
|
protected function li($lines)
|
|
{
|
|
$Elements = $this->linesElements($lines);
|
|
|
|
if ( ! in_array('', $lines)
|
|
and isset($Elements[0]) and isset($Elements[0]['name'])
|
|
and $Elements[0]['name'] === 'p'
|
|
) {
|
|
unset($Elements[0]['name']);
|
|
}
|
|
|
|
return $Elements;
|
|
}
|
|
|
|
#
|
|
# AST Convenience
|
|
#
|
|
|
|
/**
|
|
* Replace occurrences $regexp with $Elements in $text. Return an array of
|
|
* elements representing the replacement.
|
|
*/
|
|
protected static function pregReplaceElements($regexp, $Elements, $text)
|
|
{
|
|
$newElements = array();
|
|
|
|
while (preg_match($regexp, $text, $matches, PREG_OFFSET_CAPTURE))
|
|
{
|
|
$offset = $matches[0][1];
|
|
$before = substr($text, 0, $offset);
|
|
$after = substr($text, $offset + strlen($matches[0][0]));
|
|
|
|
$newElements[] = array('text' => $before);
|
|
|
|
foreach ($Elements as $Element)
|
|
{
|
|
$newElements[] = $Element;
|
|
}
|
|
|
|
$text = $after;
|
|
}
|
|
|
|
$newElements[] = array('text' => $text);
|
|
|
|
return $newElements;
|
|
}
|
|
|
|
#
|
|
# Deprecated Methods
|
|
#
|
|
|
|
function parse($text)
|
|
{
|
|
$markup = $this->text($text);
|
|
|
|
return $markup;
|
|
}
|
|
|
|
protected function sanitiseElement(array $Element)
|
|
{
|
|
static $goodAttribute = '/^[a-zA-Z0-9][a-zA-Z0-9-_]*+$/';
|
|
static $safeUrlNameToAtt = array(
|
|
'a' => 'href',
|
|
'img' => 'src',
|
|
);
|
|
|
|
if ( ! isset($Element['name']))
|
|
{
|
|
unset($Element['attributes']);
|
|
return $Element;
|
|
}
|
|
|
|
if (isset($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 $textLevelElements = array(
|
|
'a', 'br', 'bdo', 'abbr', 'blink', 'nextid', 'acronym', 'basefont',
|
|
'b', 'em', 'big', 'cite', 'small', 'spacer', 'listing',
|
|
'i', 'rp', 'del', 'code', 'strike', 'marquee',
|
|
'q', 'rt', 'ins', 'font', 'strong',
|
|
's', 'tt', 'kbd', 'mark',
|
|
'u', 'xm', 'sub', 'nobr',
|
|
'sup', 'ruby',
|
|
'var', 'span',
|
|
'wbr', 'time',
|
|
);
|
|
}
|
|
/****** PARSE DOWN ********/
|
|
|
|
/***** TRUNCATE HTML *****/
|
|
function truncateHtml($text, $length = 100, $ending = '...', $exact = false, $considerHtml = true) {
|
|
if ($considerHtml) {
|
|
// if the plain text is shorter than the maximum length, return the whole text
|
|
if (strlen(preg_replace('/<.*?>/', '', $text)) <= $length) {
|
|
return $text;
|
|
}
|
|
// splits all html-tags to scanable lines
|
|
preg_match_all('/(<.+?>)?([^<>]*)/s', $text, $lines, PREG_SET_ORDER);
|
|
$total_length = strlen($ending);
|
|
$open_tags = array();
|
|
$truncate = '';
|
|
foreach ($lines as $line_matchings) {
|
|
// if there is any html-tag in this line, handle it and add it (uncounted) to the output
|
|
if (!empty($line_matchings[1])) {
|
|
// if it's an "empty element" with or without xhtml-conform closing slash
|
|
if (preg_match('/^<(\s*.+?\/\s*|\s*(img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param)(\s.+?)?)>$/is', $line_matchings[1])) {
|
|
// do nothing
|
|
// if tag is a closing tag
|
|
} else if (preg_match('/^<\s*\/([^\s]+?)\s*>$/s', $line_matchings[1], $tag_matchings)) {
|
|
// delete tag from $open_tags list
|
|
$pos = array_search($tag_matchings[1], $open_tags);
|
|
if ($pos !== false) {
|
|
unset($open_tags[$pos]);
|
|
}
|
|
// if tag is an opening tag
|
|
} else if (preg_match('/^<\s*([^\s>!]+).*?>$/s', $line_matchings[1], $tag_matchings)) {
|
|
// add tag to the beginning of $open_tags list
|
|
array_unshift($open_tags, strtolower($tag_matchings[1]));
|
|
}
|
|
// add html-tag to $truncate'd text
|
|
$truncate .= $line_matchings[1];
|
|
}
|
|
// calculate the length of the plain text part of the line; handle entities as one character
|
|
$content_length = strlen(preg_replace('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|[0-9a-f]{1,6};/i', ' ', $line_matchings[2]));
|
|
if ($total_length+$content_length> $length) {
|
|
// the number of characters which are left
|
|
$left = $length - $total_length;
|
|
$entities_length = 0;
|
|
// search for html entities
|
|
if (preg_match_all('/&[0-9a-z]{2,8};|&#[0-9]{1,7};|[0-9a-f]{1,6};/i', $line_matchings[2], $entities, PREG_OFFSET_CAPTURE)) {
|
|
// calculate the real length of all entities in the legal range
|
|
foreach ($entities[0] as $entity) {
|
|
if ($entity[1]+1-$entities_length <= $left) {
|
|
$left--;
|
|
$entities_length += strlen($entity[0]);
|
|
} else {
|
|
// no more characters left
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
$truncate .= substr($line_matchings[2], 0, $left+$entities_length);
|
|
// maximum lenght is reached, so get off the loop
|
|
break;
|
|
} else {
|
|
$truncate .= $line_matchings[2];
|
|
$total_length += $content_length;
|
|
}
|
|
// if the maximum length is reached, get off the loop
|
|
if($total_length>= $length) {
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
if (strlen($text) <= $length) {
|
|
return $text;
|
|
} else {
|
|
$truncate = substr($text, 0, $length - strlen($ending));
|
|
}
|
|
}
|
|
// if the words shouldn't be cut in the middle...
|
|
if (!$exact) {
|
|
// ...search the last occurance of a space...
|
|
$spacepos = strrpos($truncate, ' ');
|
|
if (isset($spacepos)) {
|
|
// ...and cut the text in this position
|
|
$truncate = substr($truncate, 0, $spacepos);
|
|
}
|
|
}
|
|
// add the defined ending to the text
|
|
$truncate .= $ending;
|
|
if($considerHtml) {
|
|
// close all unclosed html-tags
|
|
foreach ($open_tags as $tag) {
|
|
$truncate .= '</' . $tag . '>';
|
|
}
|
|
}
|
|
return $truncate;
|
|
}
|
|
/***** TRUNCATE HTML *****/
|
|
/**** GET CONTENTS *****/
|
|
function url_get_contents($url, $useragent='cURL', $headers=false, $follow_redirects=true, $debug=false) {
|
|
|
|
// initialise the CURL library
|
|
$ch = curl_init();
|
|
|
|
// specify the URL to be retrieved
|
|
curl_setopt($ch, CURLOPT_URL,$url);
|
|
|
|
// we want to get the contents of the URL and store it in a variable
|
|
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
|
|
|
|
// specify the useragent: this is a required courtesy to site owners
|
|
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
|
|
|
|
// ignore SSL errors
|
|
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
|
|
|
|
// return headers as requested
|
|
if ($headers==true){
|
|
curl_setopt($ch, CURLOPT_HEADER,1);
|
|
}
|
|
|
|
// only return headers
|
|
if ($headers=='headers only') {
|
|
curl_setopt($ch, CURLOPT_NOBODY ,1);
|
|
}
|
|
|
|
// follow redirects - note this is disabled by default in most PHP installs from 4.4.4 up
|
|
if ($follow_redirects==true) {
|
|
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
|
|
}
|
|
|
|
// if debugging, return an array with CURL's debug info and the URL contents
|
|
if ($debug==true) {
|
|
$result['contents']=curl_exec($ch);
|
|
$result['info']=curl_getinfo($ch);
|
|
}
|
|
|
|
// otherwise just return the contents as a variable
|
|
else $result=curl_exec($ch);
|
|
|
|
// free resources
|
|
curl_close($ch);
|
|
|
|
// send back the data
|
|
return $result;
|
|
}
|
|
function html_to_obj($html) {
|
|
$dom = new DOMDocument();
|
|
$dom->loadHTML($html);
|
|
$lis = $dom->getElementById('doc');
|
|
return $lis->nodeValue;
|
|
}
|
|
|
|
function bgpLink(){
|
|
$news1 = html_to_obj(url_get_contents(trim("https://docutopia.sustrato.red/s/SustratoWeb")));
|
|
// // // TRANSFORM TO HTML
|
|
$Parsedown = new Parsedown();
|
|
echo '<div class="markdown-body container-fluid" style=" display: flex; flex-direction: column; align-items: center; ">'.$Parsedown->text($news1).'</div>';
|
|
}
|
|
|
|
bgpLink();
|