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1994 lines
51 KiB
1994 lines
51 KiB
<?php |
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# |
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# |
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# Parsedown |
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# http://parsedown.org |
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# |
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# (c) Emanuil Rusev |
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# http://erusev.com |
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# |
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# For the full license information, view the LICENSE file that was distributed |
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# with this source code. |
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# |
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# |
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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($matches[2]); |
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if ($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, |
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'marker' => $matches[1], |
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'markerType' => ($name === 'ul' ? $markerWithoutWhitespace : substr($markerWithoutWhitespace, -1)), |
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), |
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'element' => array( |
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'name' => $name, |
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'elements' => array(), |
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), |
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); |
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$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], $Block['data']['markerType'], true), '0') ?: '0'; |
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if ($listStart !== '1') |
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{ |
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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( |
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'function' => 'li', |
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'argument' => !empty($matches[3]) ? array($matches[3]) : array(), |
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'destination' => 'elements' |
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) |
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); |
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$Block['element']['elements'] []= & $Block['li']; |
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return $Block; |
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} |
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} |
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protected function blockListContinue($Line, array $Block) |
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{ |
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if (isset($Block['interrupted']) and empty($Block['li']['handler']['argument'])) |
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{ |
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return null; |
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} |
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$requiredIndent = ($Block['indent'] + strlen($Block['data']['marker'])); |
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|
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if ($Line['indent'] < $requiredIndent |
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and ( |
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( |
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$Block['data']['type'] === 'ol' |
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and preg_match('/^[0-9]++'.$Block['data']['markerTypeRegex'].'(?:[ ]++(.*)|$)/', $Line['text'], $matches) |
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) or ( |
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$Block['data']['type'] === 'ul' |
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and preg_match('/^'.$Block['data']['markerTypeRegex'].'(?:[ ]++(.*)|$)/', $Line['text'], $matches) |
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) |
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) |
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) { |
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if (isset($Block['interrupted'])) |
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{ |
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$Block['li']['handler']['argument'] []= ''; |
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$Block['loose'] = true; |
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unset($Block['interrupted']); |
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} |
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unset($Block['li']); |
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$text = isset($matches[1]) ? $matches[1] : ''; |
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$Block['indent'] = $Line['indent']; |
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$Block['li'] = array( |
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'name' => 'li', |
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'handler' => array( |
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'function' => 'li', |
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'argument' => array($text), |
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'destination' => 'elements' |
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) |
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); |
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$Block['element']['elements'] []= & $Block['li']; |
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return $Block; |
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} |
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elseif ($Line['indent'] < $requiredIndent and $this->blockList($Line)) |
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{ |
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return null; |
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} |
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if ($Line['text'][0] === '[' and $this->blockReference($Line)) |
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{ |
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return $Block; |
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} |
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|
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if ($Line['indent'] >= $requiredIndent) |
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{ |
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if (isset($Block['interrupted'])) |
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{ |
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$Block['li']['handler']['argument'] []= ''; |
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|
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$Block['loose'] = true; |
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|
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unset($Block['interrupted']); |
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} |
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$text = substr($Line['body'], $requiredIndent); |
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|
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$Block['li']['handler']['argument'] []= $text; |
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|
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return $Block; |
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} |
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|
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if ( ! isset($Block['interrupted'])) |
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{ |
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$text = preg_replace('/^[ ]{0,'.$requiredIndent.'}+/', '', $Line['body']); |
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|
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$Block['li']['handler']['argument'] []= $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 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', |
|
); |
|
}
|
|
|