mirror of
https://github.com/Karaka-Management/phpOMS.git
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2480 lines
65 KiB
PHP
Executable File
2480 lines
65 KiB
PHP
Executable File
<?php
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/**
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* Jingga
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*
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* PHP Version 8.1
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*
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* @package phpOMS\Utils\Parser\Markdown
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* @license Original license Emanuil Rusev, erusev.com (MIT)
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* @version 1.0.0
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* @link https://jingga.app
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*/
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declare(strict_types=1);
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namespace phpOMS\Utils\Parser\Markdown;
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use phpOMS\Uri\UriFactory;
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/**
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* Markdown parser class.
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*
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* @package phpOMS\Utils\Parser\Markdown
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* @license Original license Emanuil Rusev, erusev.com (MIT)
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* @link https://jingga.app
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* @since 1.0.0
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*/
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class Markdown
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{
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public 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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# merge consecutive dl elements
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$markup = \preg_replace('/<\/dl>\s+<dl>\s+/', '', $markup);
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# add footnotes
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if (isset($this->DefinitionData['Footnote']))
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{
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$Element = $this->buildFootnoteElement();
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$markup .= "\n" . $this->element($Element);
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}
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return $markup;
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}
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protected function sortFootnotes($A, $B) # callback
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{
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return $A['number'] - $B['number'];
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}
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protected string $regexAttribute = '(?:[#.][-\w]+[ ]*)';
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protected function buildFootnoteElement()
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{
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$Element = [
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'name' => 'div',
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'attributes' => ['class' => 'footnotes'],
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'elements' => [
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['name' => 'hr'],
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[
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'name' => 'ol',
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'elements' => [],
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],
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],
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];
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\uasort($this->DefinitionData['Footnote'], 'self::sortFootnotes');
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foreach ($this->DefinitionData['Footnote'] as $definitionId => $DefinitionData)
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{
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if (! isset($DefinitionData['number']))
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{
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continue;
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}
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$text = $DefinitionData['text'];
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$textElements = self::textElements($text);
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$numbers = \range(1, $DefinitionData['count']);
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$backLinkElements = [];
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foreach ($numbers as $number)
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{
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$backLinkElements[] = ['text' => ' '];
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$backLinkElements[] = [
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'name' => 'a',
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'attributes' => [
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'href' => "#fnref{$number}:{$definitionId}",
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'rev' => 'footnote',
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'class' => 'footnote-backref',
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],
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'rawHtml' => '↩',
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'allowRawHtmlInSafeMode' => true,
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'autobreak' => false,
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];
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}
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unset($backLinkElements[0]);
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$n = \count($textElements) - 1;
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if ($textElements[$n]['name'] === 'p')
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{
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$backLinkElements = \array_merge(
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[
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[
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'rawHtml' => ' ',
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'allowRawHtmlInSafeMode' => true,
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],
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],
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$backLinkElements
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);
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unset($textElements[$n]['name']);
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$textElements[$n] = [
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'name' => 'p',
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'elements' => \array_merge(
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[$textElements[$n]],
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$backLinkElements
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),
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];
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}
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else
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{
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$textElements[] = [
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'name' => 'p',
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'elements' => $backLinkElements,
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];
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}
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$Element['elements'][1]['elements'][] = [
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'name' => 'li',
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'attributes' => ['id' => 'fn:'.$definitionId],
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'elements' => \array_merge(
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$textElements
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),
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];
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}
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return $Element;
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}
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protected function textElements($text)
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{
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# make sure no definitions are set
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$this->DefinitionData = [];
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# standardize line breaks
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$text = \str_replace(["\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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public 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 bool $breaksEnabled = false;
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public function setMarkupEscaped($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 bool $markupEscaped = false;
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public function setUrlsLinked($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 bool $urlsLinked = true;
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public function setSafeMode($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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public bool $safeMode = false;
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public function setStrictMode($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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public bool $strictMode = false;
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protected array $safeLinksWhitelist = [
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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 array $BlockTypes = [
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'#' => ['Header'],
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'*' => ['Rule', 'List', 'Abbreviation'],
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'+' => ['List'],
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'-' => ['SetextHeader', 'Table', 'Rule', 'List'],
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'0' => ['List'],
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'1' => ['List'],
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'2' => ['List'],
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'3' => ['List'],
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'4' => ['List'],
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'5' => ['List'],
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'6' => ['List'],
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'7' => ['List'],
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'8' => ['List'],
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'9' => ['List'],
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':' => ['Table', 'DefinitionList'],
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'<' => ['Comment', 'Markup'],
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'=' => ['SetextHeader'],
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'>' => ['Quote'],
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'[' => ['Footnote', 'Reference'],
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'_' => ['Rule'],
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'`' => ['FencedCode'],
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'|' => ['Table'],
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'~' => ['FencedCode'],
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];
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# ~
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protected array $unmarkedBlockTypes = [
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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 = [];
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$CurrentBlock = null;
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foreach ($lines as $line)
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{
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if (\rtrim($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 = ['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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$CurrentBlock = $Block;
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continue;
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} elseif ($this->isBlockCompletable($CurrentBlock['type'])) {
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$methodName = 'block' . $CurrentBlock['type'] . 'Complete';
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$CurrentBlock = $this->{$methodName}($CurrentBlock);
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}
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}
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# ~
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$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) && $CurrentBlock['type'] === 'Paragraph')
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{
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$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']) && $this->isBlockCompletable($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'] = ['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'] = [];
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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): bool
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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): bool
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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) && $Block['type'] === 'Paragraph' && ! isset($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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return [
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'element' => [
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'name' => 'pre',
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'element' => [
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'name' => 'code',
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'text' => $text,
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],
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],
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];
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}
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}
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protected function blockCodeContinue($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 || $this->safeMode)
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{
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return;
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}
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if (\strpos($Line['text'], '<!--') === 0)
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{
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$Block = [
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'element' => [
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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'], $marker);
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|
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if ($openerLength < 3)
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{
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return;
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}
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|
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$infostring = \trim(\substr($Line['text'], $openerLength), "\t ");
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|
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if (\strpos($infostring, '`') !== false)
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{
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return;
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}
|
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|
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$Element = [
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'name' => 'code',
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'text' => '',
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];
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|
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if ($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'] = ['class' => "language-{$language}"];
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}
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|
|
return [
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'char' => $marker,
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'openerLength' => $openerLength,
|
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'element' => [
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'name' => 'pre',
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'element' => $Element,
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],
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];
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}
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|
|
protected function blockFencedCodeContinue($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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|
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if (isset($Block['interrupted']))
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{
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$Block['element']['element']['text'] .= \str_repeat("\n", $Block['interrupted']);
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|
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unset($Block['interrupted']);
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}
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|
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if (($len = \strspn($Line['text'], $Block['char'])) >= $Block['openerLength']
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&& \rtrim(\substr($Line['text'], $len), ' ') === ''
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) {
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$Block['element']['element']['text'] = \substr($Block['element']['element']['text'], 1);
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|
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$Block['complete'] = true;
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return $Block;
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}
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|
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$Block['element']['element']['text'] .= "\n" . $Line['body'];
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|
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return $Block;
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}
|
|
|
|
protected function blockFencedCodeComplete($Block)
|
|
{
|
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return $Block;
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}
|
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|
|
protected function blockAbbreviation($Line)
|
|
{
|
|
if (\preg_match('/^\*\[(.+?)\]:[ ]*(.+?)[ ]*$/', $Line['text'], $matches))
|
|
{
|
|
$this->DefinitionData['Abbreviation'][$matches[1]] = $matches[2];
|
|
|
|
return [
|
|
'hidden' => true,
|
|
];
|
|
}
|
|
}
|
|
|
|
#
|
|
# Footnote
|
|
|
|
protected function blockFootnote($Line)
|
|
{
|
|
if (\preg_match('/^\[\^(.+?)\]:[ ]?(.*)$/', $Line['text'], $matches))
|
|
{
|
|
return [
|
|
'label' => $matches[1],
|
|
'text' => $matches[2],
|
|
'hidden' => true,
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function blockFootnoteContinue($Line, $Block)
|
|
{
|
|
if ($Line['text'][0] === '[' && \preg_match('/^\[\^(.+?)\]:/', $Line['text']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
if ($Line['indent'] >= 4)
|
|
{
|
|
$Block['text'] .= "\n\n" . $Line['text'];
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$Block['text'] .= "\n" . $Line['text'];
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockFootnoteComplete($Block)
|
|
{
|
|
$this->DefinitionData['Footnote'][$Block['label']] = [
|
|
'text' => $Block['text'],
|
|
'count' => null,
|
|
'number' => null,
|
|
];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# Definition List
|
|
|
|
protected function blockDefinitionList($Line, $Block)
|
|
{
|
|
if (! isset($Block) || $Block['type'] !== 'Paragraph')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Element = [
|
|
'name' => 'dl',
|
|
'elements' => [],
|
|
];
|
|
|
|
$terms = \explode("\n", $Block['element']['handler']['argument']);
|
|
|
|
foreach ($terms as $term)
|
|
{
|
|
$Element['elements'] []= [
|
|
'name' => 'dt',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $term,
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
}
|
|
|
|
$Block['element'] = $Element;
|
|
|
|
return $this->addDdElement($Line, $Block);
|
|
}
|
|
|
|
protected function blockDefinitionListContinue($Line, array $Block)
|
|
{
|
|
if ($Line['text'][0] === ':')
|
|
{
|
|
return $this->addDdElement($Line, $Block);
|
|
}
|
|
else
|
|
{
|
|
if (isset($Block['interrupted']) && $Line['indent'] === 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
$Block['dd']['handler']['function'] = 'textElements';
|
|
$Block['dd']['handler']['argument'] .= "\n\n";
|
|
|
|
$Block['dd']['handler']['destination'] = 'elements';
|
|
|
|
unset($Block['interrupted']);
|
|
}
|
|
|
|
$text = \substr($Line['body'], \min($Line['indent'], 4));
|
|
|
|
$Block['dd']['handler']['argument'] .= "\n" . $text;
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function addDdElement(array $Line, array $Block)
|
|
{
|
|
$text = \substr($Line['text'], 1);
|
|
$text = \trim($text);
|
|
|
|
unset($Block['dd']);
|
|
|
|
$Block['dd'] = [
|
|
'name' => 'dd',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $text,
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
$Block['dd']['handler']['function'] = 'textElements';
|
|
|
|
unset($Block['interrupted']);
|
|
}
|
|
|
|
$Block['element']['elements'] []= & $Block['dd'];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# Header
|
|
|
|
protected function blockHeader($Line)
|
|
{
|
|
$level = \strspn($Line['text'], '#');
|
|
|
|
if ($level > 6)
|
|
{
|
|
return;
|
|
}
|
|
|
|
$text = \trim($Line['text'], '#');
|
|
|
|
if ($this->strictMode && isset($text[0]) && $text[0] !== ' ')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$text = \trim($text, ' ');
|
|
|
|
$Block = [
|
|
'element' => [
|
|
'name' => 'h' . $level,
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $text,
|
|
'destination' => 'elements',
|
|
],
|
|
],
|
|
];
|
|
|
|
if ($Block !== null && \preg_match('/[ #]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['handler']['argument'], $matches, \PREG_OFFSET_CAPTURE))
|
|
{
|
|
$attributeString = $matches[1][0];
|
|
|
|
$Block['element']['attributes'] = $this->parseAttributeData($attributeString);
|
|
|
|
$Block['element']['handler']['argument'] = \substr($Block['element']['handler']['argument'], 0, (int) $matches[0][1]);
|
|
}
|
|
|
|
return $Block;
|
|
}
|
|
|
|
#
|
|
# List
|
|
|
|
protected function blockList($Line, array $CurrentBlock = null)
|
|
{
|
|
list($name, $pattern) = $Line['text'][0] <= '-' ? ['ul', '[*+-]'] : ['ol', '[0-9]{1,9}+[.\)]'];
|
|
|
|
if (\preg_match('/^('.$pattern.'([ ]++|$))(.*+)/', $Line['text'], $matches))
|
|
{
|
|
$contentIndent = \strlen($matches[2]);
|
|
|
|
if ($contentIndent >= 5)
|
|
{
|
|
--$contentIndent;
|
|
$matches[1] = \substr($matches[1], 0, -$contentIndent);
|
|
$matches[3] = \str_repeat(' ', $contentIndent) . $matches[3];
|
|
}
|
|
elseif ($contentIndent === 0)
|
|
{
|
|
$matches[1] .= ' ';
|
|
}
|
|
|
|
$markerWithoutWhitespace = \strstr($matches[1], ' ', true);
|
|
|
|
$Block = [
|
|
'indent' => $Line['indent'],
|
|
'pattern' => $pattern,
|
|
'data' => [
|
|
'type' => $name,
|
|
'marker' => $matches[1],
|
|
'markerType' => ($name === 'ul' ? $markerWithoutWhitespace : \substr($markerWithoutWhitespace, -1)),
|
|
],
|
|
'element' => [
|
|
'name' => $name,
|
|
'elements' => [],
|
|
],
|
|
];
|
|
$Block['data']['markerTypeRegex'] = \preg_quote($Block['data']['markerType'], '/');
|
|
|
|
if ($name === 'ol')
|
|
{
|
|
$listStart = \ltrim(\strstr($matches[1], $Block['data']['markerType'], true), '0') ?: '0';
|
|
|
|
if ($listStart !== '1')
|
|
{
|
|
if (
|
|
isset($CurrentBlock)
|
|
&& $CurrentBlock['type'] === 'Paragraph'
|
|
&& ! isset($CurrentBlock['interrupted'])
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$Block['element']['attributes'] = ['start' => $listStart];
|
|
}
|
|
}
|
|
|
|
$Block['li'] = [
|
|
'name' => 'li',
|
|
'handler' => [
|
|
'function' => 'li',
|
|
'argument' => empty($matches[3]) ? [] : [$matches[3]],
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
|
|
$Block['element']['elements'] []= & $Block['li'];
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockListContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']) && empty($Block['li']['handler']['argument']))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
$requiredIndent = ($Block['indent'] + \strlen($Block['data']['marker']));
|
|
|
|
if ($Line['indent'] < $requiredIndent
|
|
&& (
|
|
(
|
|
$Block['data']['type'] === 'ol'
|
|
&& \preg_match('/^[0-9]++'.$Block['data']['markerTypeRegex'].'(?:[ ]++(.*)|$)/', $Line['text'], $matches)
|
|
) || (
|
|
$Block['data']['type'] === 'ul'
|
|
&& \preg_match('/^'.$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'];
|
|
|
|
$Block['li'] = [
|
|
'name' => 'li',
|
|
'handler' => [
|
|
'function' => 'li',
|
|
'argument' => [$text],
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
|
|
$Block['element']['elements'] []= & $Block['li'];
|
|
|
|
return $Block;
|
|
}
|
|
elseif ($Line['indent'] < $requiredIndent && $this->blockList($Line))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if ($Line['text'][0] === '[' && $this->blockReference($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))
|
|
{
|
|
return [
|
|
'element' => [
|
|
'name' => 'blockquote',
|
|
'handler' => [
|
|
'function' => 'linesElements',
|
|
'argument' => (array) $matches[1],
|
|
'destination' => 'elements',
|
|
],
|
|
],
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function blockQuoteContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Line['text'][0] === '>' && \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'], $marker) >= 3 && \rtrim($Line['text'], " {$marker}") === '')
|
|
{
|
|
return [
|
|
'element' => [
|
|
'name' => 'hr',
|
|
],
|
|
];
|
|
}
|
|
}
|
|
|
|
#
|
|
# Setext
|
|
|
|
protected function blockSetextHeader($Line, array $Block = null)
|
|
{
|
|
if (! isset($Block) || $Block['type'] !== 'Paragraph' || isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Line['indent'] < 4 && \rtrim(\rtrim($Line['text'], ' '), $Line['text'][0]) === '')
|
|
{
|
|
$Block['element']['name'] = $Line['text'][0] === '=' ? 'h1' : 'h2';
|
|
}
|
|
|
|
if ($Block !== null && \preg_match('/[ ]*{('.$this->regexAttribute.'+)}[ ]*$/', $Block['element']['handler']['argument'], $matches, \PREG_OFFSET_CAPTURE))
|
|
{
|
|
$attributeString = $matches[1][0];
|
|
|
|
$Block['element']['attributes'] = $this->parseAttributeData($attributeString);
|
|
|
|
$Block['element']['handler']['argument'] = \substr($Block['element']['handler']['argument'], 0, (int) $matches[0][1]);
|
|
}
|
|
|
|
return $Block;
|
|
}
|
|
|
|
protected function inlineFootnoteMarker($Excerpt)
|
|
{
|
|
if (\preg_match('/^\[\^(.+?)\]/', $Excerpt['text'], $matches))
|
|
{
|
|
$name = $matches[1];
|
|
|
|
if (! isset($this->DefinitionData['Footnote'][$name]))
|
|
{
|
|
return;
|
|
}
|
|
|
|
++$this->DefinitionData['Footnote'][$name]['count'];
|
|
|
|
if (! isset($this->DefinitionData['Footnote'][$name]['number']))
|
|
{
|
|
$this->DefinitionData['Footnote'][$name]['number'] = ++ $this->footnoteCount; # » &
|
|
}
|
|
|
|
$Element = [
|
|
'name' => 'sup',
|
|
'attributes' => ['id' => 'fnref'.$this->DefinitionData['Footnote'][$name]['count'].':'.$name],
|
|
'element' => [
|
|
'name' => 'a',
|
|
'attributes' => ['href' => '#fn:'.$name, 'class' => 'footnote-ref'],
|
|
'text' => $this->DefinitionData['Footnote'][$name]['number'],
|
|
],
|
|
];
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => $Element,
|
|
];
|
|
}
|
|
}
|
|
|
|
private int $footnoteCount = 0;
|
|
|
|
#
|
|
# Markup
|
|
|
|
protected function blockMarkup($Line)
|
|
{
|
|
if ($this->markupEscaped || $this->safeMode)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (\preg_match('/^<(\w[\w-]*)(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*(\/)?>/', $Line['text'], $matches))
|
|
{
|
|
$element = \strtolower($matches[1]);
|
|
|
|
if (\in_array($element, $this->textLevelElements))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Block = [
|
|
'name' => $matches[1],
|
|
'depth' => 0,
|
|
'element' => [
|
|
'rawHtml' => $Line['text'],
|
|
'autobreak' => true,
|
|
],
|
|
];
|
|
|
|
$length = \strlen($matches[0]);
|
|
$remainder = \substr($Line['text'], $length);
|
|
|
|
if (\trim($remainder) === '')
|
|
{
|
|
if (isset($matches[2]) || \in_array($matches[1], $this->voidElements))
|
|
{
|
|
$Block['closed'] = true;
|
|
$Block['void'] = true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (isset($matches[2]) || \in_array($matches[1], $this->voidElements))
|
|
{
|
|
return;
|
|
}
|
|
if (\preg_match('/<\/'.$matches[1].'>[ ]*$/i', $remainder))
|
|
{
|
|
$Block['closed'] = true;
|
|
}
|
|
}
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
protected function blockMarkupContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['closed']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (\preg_match('/^<'.$Block['name'].'(?:[ ]*'.$this->regexHtmlAttribute.')*[ ]*>/i', $Line['text'])) # open
|
|
{
|
|
++$Block['depth'];
|
|
}
|
|
|
|
if (\preg_match('/(.*?)<\/'.$Block['name'].'>[ ]*$/i', $Line['text'], $matches)) # close
|
|
{
|
|
if ($Block['depth'] > 0)
|
|
{
|
|
--$Block['depth'];
|
|
}
|
|
else
|
|
{
|
|
$Block['closed'] = true;
|
|
}
|
|
}
|
|
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
$Block['element']['rawHtml'] .= "\n";
|
|
unset($Block['interrupted']);
|
|
}
|
|
|
|
$Block['element']['rawHtml'] .= "\n".$Line['body'];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
protected function blockMarkupComplete($Block)
|
|
{
|
|
if (! isset($Block['void']))
|
|
{
|
|
$Block['element']['rawHtml'] = $this->processTag($Block['element']['rawHtml']);
|
|
}
|
|
|
|
return $Block;
|
|
}
|
|
|
|
protected function processTag($elementMarkup) # recursive
|
|
{
|
|
# http://stackoverflow.com/q/1148928/200145
|
|
\libxml_use_internal_errors(true);
|
|
|
|
$DOMDocument = new \DOMDocument();
|
|
|
|
# http://stackoverflow.com/q/11309194/200145
|
|
$elementMarkup = \mb_convert_encoding($elementMarkup, 'HTML-ENTITIES', 'UTF-8');
|
|
|
|
# http://stackoverflow.com/q/4879946/200145
|
|
$DOMDocument->loadHTML($elementMarkup);
|
|
$DOMDocument->removeChild($DOMDocument->doctype);
|
|
$DOMDocument->replaceChild($DOMDocument->firstChild->firstChild->firstChild, $DOMDocument->firstChild);
|
|
|
|
$elementText = '';
|
|
|
|
if ($DOMDocument->documentElement->getAttribute('markdown') === '1')
|
|
{
|
|
foreach ($DOMDocument->documentElement->childNodes as $Node)
|
|
{
|
|
$elementText .= $DOMDocument->saveHTML($Node);
|
|
}
|
|
|
|
$DOMDocument->documentElement->removeAttribute('markdown');
|
|
|
|
$elementText = "\n".$this->text($elementText)."\n";
|
|
}
|
|
else
|
|
{
|
|
foreach ($DOMDocument->documentElement->childNodes as $Node)
|
|
{
|
|
$nodeMarkup = $DOMDocument->saveHTML($Node);
|
|
|
|
if ($Node instanceof \DOMElement && ! \in_array($Node->nodeName, $this->textLevelElements))
|
|
{
|
|
$elementText .= $this->processTag($nodeMarkup);
|
|
}
|
|
else
|
|
{
|
|
$elementText .= $nodeMarkup;
|
|
}
|
|
}
|
|
}
|
|
|
|
# because we don't want for markup to get encoded
|
|
$DOMDocument->documentElement->nodeValue = 'placeholder\x1A';
|
|
|
|
$markup = $DOMDocument->saveHTML($DOMDocument->documentElement);
|
|
|
|
return \str_replace('placeholder\x1A', $elementText, $markup);
|
|
}
|
|
|
|
#
|
|
# Reference
|
|
|
|
protected function blockReference($Line)
|
|
{
|
|
if (\strpos($Line['text'], ']') !== false
|
|
&& \preg_match('/^\[(.+?)\]:[ ]*+<?(\S+?)>?(?:[ ]+["\'(](.+)["\')])?[ ]*+$/', $Line['text'], $matches)
|
|
) {
|
|
$id = \strtolower($matches[1]);
|
|
|
|
$Data = [
|
|
'url' => UriFactory::build($matches[2]),
|
|
'title' => isset($matches[3]) ? $matches[3] : null,
|
|
];
|
|
|
|
$this->DefinitionData['Reference'][$id] = $Data;
|
|
|
|
return [
|
|
'element' => [],
|
|
];
|
|
}
|
|
}
|
|
|
|
#
|
|
# Table
|
|
|
|
protected function blockTable($Line, array $Block = null)
|
|
{
|
|
if (! isset($Block) || $Block['type'] !== 'Paragraph' || isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (
|
|
\strpos($Block['element']['handler']['argument'], '|') === false
|
|
&& \strpos($Line['text'], '|') === false
|
|
&& \strpos($Line['text'], ':') === false
|
|
|| \strpos($Block['element']['handler']['argument'], "\n") !== false
|
|
) {
|
|
return;
|
|
}
|
|
|
|
if (\rtrim($Line['text'], ' -:|') !== '')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$alignments = [];
|
|
|
|
$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 = [];
|
|
|
|
$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 = [
|
|
'name' => 'th',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $headerCell,
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
|
|
if (isset($alignments[$index]))
|
|
{
|
|
$alignment = $alignments[$index];
|
|
|
|
$HeaderElement['attributes'] = [
|
|
'style' => "text-align: {$alignment};",
|
|
];
|
|
}
|
|
|
|
$HeaderElements []= $HeaderElement;
|
|
}
|
|
|
|
# ~
|
|
|
|
$Block = [
|
|
'alignments' => $alignments,
|
|
'identified' => true,
|
|
'element' => [
|
|
'name' => 'table',
|
|
'elements' => [],
|
|
],
|
|
];
|
|
|
|
$Block['element']['elements'] []= [
|
|
'name' => 'thead',
|
|
];
|
|
|
|
$Block['element']['elements'] []= [
|
|
'name' => 'tbody',
|
|
'elements' => [],
|
|
];
|
|
|
|
$Block['element']['elements'][0]['elements'] []= [
|
|
'name' => 'tr',
|
|
'elements' => $HeaderElements,
|
|
];
|
|
|
|
return $Block;
|
|
}
|
|
|
|
protected function blockTableContinue($Line, array $Block)
|
|
{
|
|
if (isset($Block['interrupted']))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (\count($Block['alignments']) === 1 || $Line['text'][0] === '|' || \strpos($Line['text'], '|'))
|
|
{
|
|
$Elements = [];
|
|
|
|
$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 = [
|
|
'name' => 'td',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $cell,
|
|
'destination' => 'elements',
|
|
],
|
|
];
|
|
|
|
if (isset($Block['alignments'][$index]))
|
|
{
|
|
$Element['attributes'] = [
|
|
'style' => 'text-align: ' . $Block['alignments'][$index] . ';',
|
|
];
|
|
}
|
|
|
|
$Elements []= $Element;
|
|
}
|
|
|
|
$Element = [
|
|
'name' => 'tr',
|
|
'elements' => $Elements,
|
|
];
|
|
|
|
$Block['element']['elements'][1]['elements'] []= $Element;
|
|
|
|
return $Block;
|
|
}
|
|
}
|
|
|
|
#
|
|
# ~
|
|
#
|
|
|
|
protected function paragraph($Line)
|
|
{
|
|
return [
|
|
'type' => 'Paragraph',
|
|
'element' => [
|
|
'name' => 'p',
|
|
'handler' => [
|
|
'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 = [
|
|
'!' => ['Image'],
|
|
'&' => ['SpecialCharacter'],
|
|
'*' => ['Emphasis'],
|
|
':' => ['Url'],
|
|
'<' => ['UrlTag', 'EmailTag', 'Markup'],
|
|
'[' => ['FootnoteMarker', 'Link'],
|
|
'_' => ['Emphasis'],
|
|
'`' => ['Code'],
|
|
'~' => ['Strikethrough'],
|
|
'\\' => ['EscapeSequence'],
|
|
];
|
|
|
|
# ~
|
|
|
|
protected $inlineMarkerList = '!*_&[:<`~\\';
|
|
|
|
#
|
|
# ~
|
|
#
|
|
|
|
public function line($text, $nonNestables = [])
|
|
{
|
|
return $this->elements($this->lineElements($text, $nonNestables));
|
|
}
|
|
|
|
protected function lineElements($text, $nonNestables = [])
|
|
{
|
|
# standardize line breaks
|
|
$text = \str_replace(["\r\n", "\r"], "\n", $text);
|
|
|
|
$Elements = [];
|
|
|
|
$nonNestables = (empty($nonNestables)
|
|
? []
|
|
: \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 = ['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']) && $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)
|
|
{
|
|
$Inline = [
|
|
'extent' => \strlen($text),
|
|
'element' => [],
|
|
];
|
|
|
|
$Inline['element']['elements'] = self::pregReplaceElements(
|
|
$this->breaksEnabled ? '/[ ]*+\n/' : '/(?:[ ]*+\\\\|[ ]{2,}+)\n/',
|
|
[
|
|
['name' => 'br'],
|
|
['text' => "\n"],
|
|
],
|
|
$text
|
|
);
|
|
|
|
if (isset($this->DefinitionData['Abbreviation']))
|
|
{
|
|
foreach ($this->DefinitionData['Abbreviation'] as $abbreviation => $meaning)
|
|
{
|
|
$this->currentAbreviation = $abbreviation;
|
|
$this->currentMeaning = $meaning;
|
|
|
|
$Inline['element'] = $this->elementApplyRecursiveDepthFirst(
|
|
[$this, 'insertAbreviation'],
|
|
$Inline['element']
|
|
);
|
|
}
|
|
}
|
|
|
|
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/', ' ', $text);
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => [
|
|
'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
|
|
&& \preg_match("/^<((mailto:)?{$commonMarkEmail})>/i", $Excerpt['text'], $matches)
|
|
){
|
|
$url = $matches[1];
|
|
|
|
if (! isset($matches[2]))
|
|
{
|
|
$url = "mailto:{$url}";
|
|
}
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => [
|
|
'name' => 'a',
|
|
'text' => $matches[1],
|
|
'attributes' => [
|
|
'href' => UriFactory::build($url),
|
|
],
|
|
],
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineEmphasis($Excerpt)
|
|
{
|
|
if (! isset($Excerpt['text'][1]))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$marker = $Excerpt['text'][0];
|
|
|
|
if ($Excerpt['text'][1] === $marker && \preg_match($this->StrongRegex[$marker], $Excerpt['text'], $matches))
|
|
{
|
|
$emphasis = 'strong';
|
|
}
|
|
elseif (\preg_match($this->EmRegex[$marker], $Excerpt['text'], $matches))
|
|
{
|
|
$emphasis = 'em';
|
|
}
|
|
else
|
|
{
|
|
return;
|
|
}
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => [
|
|
'name' => $emphasis,
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $matches[1],
|
|
'destination' => 'elements',
|
|
],
|
|
],
|
|
];
|
|
}
|
|
|
|
protected function inlineEscapeSequence($Excerpt)
|
|
{
|
|
if (isset($Excerpt['text'][1]) && \in_array($Excerpt['text'][1], $this->specialCharacters))
|
|
{
|
|
return [
|
|
'element' => ['rawHtml' => $Excerpt['text'][1]],
|
|
'extent' => 2,
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineImage($Excerpt)
|
|
{
|
|
if (! isset($Excerpt['text'][1]) || $Excerpt['text'][1] !== '[')
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Excerpt['text']= \substr($Excerpt['text'], 1);
|
|
|
|
$Link = $this->inlineLink($Excerpt);
|
|
|
|
if ($Link === null)
|
|
{
|
|
return;
|
|
}
|
|
|
|
$Inline = [
|
|
'extent' => $Link['extent'] + 1,
|
|
'element' => [
|
|
'name' => 'img',
|
|
'attributes' => [
|
|
'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 = [
|
|
'name' => 'a',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => null,
|
|
'destination' => 'elements',
|
|
],
|
|
'nonNestables' => ['Url', 'Link'],
|
|
'attributes' => [
|
|
'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))
|
|
{
|
|
$Element['attributes']['href'] = UriFactory::build($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]) !== 0 ? $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'];
|
|
}
|
|
|
|
$Link = [
|
|
'extent' => $extent,
|
|
'element' => $Element,
|
|
];
|
|
|
|
$remainder = $Link !== null ? \substr($Excerpt['text'], $Link['extent']) : '';
|
|
|
|
if (\preg_match('/^[ ]*{('.$this->regexAttribute.'+)}/', $remainder, $matches))
|
|
{
|
|
$Link['element']['attributes'] += $this->parseAttributeData($matches[1]);
|
|
|
|
$Link['extent'] += \strlen($matches[0]);
|
|
}
|
|
|
|
return $Link;
|
|
}
|
|
|
|
protected function parseAttributeData($attributeString)
|
|
{
|
|
$Data = [];
|
|
|
|
$attributes = \preg_split('/[ ]+/', $attributeString, - 1, \PREG_SPLIT_NO_EMPTY);
|
|
|
|
foreach ($attributes as $attribute)
|
|
{
|
|
if ($attribute[0] === '#')
|
|
{
|
|
$Data['id'] = \substr($attribute, 1);
|
|
}
|
|
else # "."
|
|
{
|
|
$classes []= \substr($attribute, 1);
|
|
}
|
|
}
|
|
|
|
if (isset($classes))
|
|
{
|
|
$Data['class'] = \implode(' ', $classes);
|
|
}
|
|
|
|
return $Data;
|
|
}
|
|
|
|
private $currentAbreviation;
|
|
|
|
private $currentMeaning;
|
|
|
|
protected function insertAbreviation(array $Element)
|
|
{
|
|
if (isset($Element['text']))
|
|
{
|
|
$Element['elements'] = self::pregReplaceElements(
|
|
'/\b'.\preg_quote($this->currentAbreviation, '/').'\b/',
|
|
[
|
|
[
|
|
'name' => 'abbr',
|
|
'attributes' => [
|
|
'title' => $this->currentMeaning,
|
|
],
|
|
'text' => $this->currentAbreviation,
|
|
],
|
|
],
|
|
$Element['text']
|
|
);
|
|
|
|
unset($Element['text']);
|
|
}
|
|
|
|
return $Element;
|
|
}
|
|
|
|
protected function inlineMarkup($Excerpt)
|
|
{
|
|
if ($this->markupEscaped || $this->safeMode || \strpos($Excerpt['text'], '>') === false)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Excerpt['text'][1] === '/' && \preg_match('/^<\/\w[\w-]*+[ ]*+>/s', $Excerpt['text'], $matches))
|
|
{
|
|
return [
|
|
'element' => ['rawHtml' => $matches[0]],
|
|
'extent' => \strlen($matches[0]),
|
|
];
|
|
}
|
|
|
|
if ($Excerpt['text'][1] === '!' && \preg_match('/^<!---?[^>-](?:-?+[^-])*-->/s', $Excerpt['text'], $matches))
|
|
{
|
|
return [
|
|
'element' => ['rawHtml' => $matches[0]],
|
|
'extent' => \strlen($matches[0]),
|
|
];
|
|
}
|
|
|
|
if ($Excerpt['text'][1] !== ' ' && \preg_match('/^<\w[\w-]*+(?:[ ]*+'.$this->regexHtmlAttribute.')*+[ ]*+\/?>/s', $Excerpt['text'], $matches))
|
|
{
|
|
return [
|
|
'element' => ['rawHtml' => $matches[0]],
|
|
'extent' => \strlen($matches[0]),
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineSpecialCharacter($Excerpt)
|
|
{
|
|
if (\substr($Excerpt['text'], 1, 1) !== ' ' && \strpos($Excerpt['text'], ';') !== false
|
|
&& \preg_match('/^&(#?+[0-9a-zA-Z]++);/', $Excerpt['text'], $matches)
|
|
) {
|
|
return [
|
|
'element' => ['rawHtml' => '&' . $matches[1] . ';'],
|
|
'extent' => \strlen($matches[0]),
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineStrikethrough($Excerpt)
|
|
{
|
|
if (! isset($Excerpt['text'][1]))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($Excerpt['text'][1] === '~' && \preg_match('/^~~(?=\S)(.+?)(?<=\S)~~/', $Excerpt['text'], $matches))
|
|
{
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => [
|
|
'name' => 'del',
|
|
'handler' => [
|
|
'function' => 'lineElements',
|
|
'argument' => $matches[1],
|
|
'destination' => 'elements',
|
|
],
|
|
],
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineUrl($Excerpt)
|
|
{
|
|
if (!$this->urlsLinked || ! isset($Excerpt['text'][2]) || $Excerpt['text'][2] !== '/')
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (\strpos($Excerpt['context'], 'http') !== false
|
|
&& \preg_match('/\bhttps?+:[\/]{2}[^\s<]+\b\/*+/ui', $Excerpt['context'], $matches, \PREG_OFFSET_CAPTURE)
|
|
) {
|
|
$url = $matches[0][0];
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0][0]),
|
|
'position' => $matches[0][1],
|
|
'element' => [
|
|
'name' => 'a',
|
|
'text' => $url,
|
|
'attributes' => [
|
|
'href' => UriFactory::build($url),
|
|
],
|
|
],
|
|
];
|
|
}
|
|
}
|
|
|
|
protected function inlineUrlTag($Excerpt)
|
|
{
|
|
if (\strpos($Excerpt['text'], '>') !== false && \preg_match('/^<(\w++:\/{2}[^ >]++)>/i', $Excerpt['text'], $matches))
|
|
{
|
|
$url = $matches[1];
|
|
|
|
return [
|
|
'extent' => \strlen($matches[0]),
|
|
'element' => [
|
|
'name' => 'a',
|
|
'text' => $url,
|
|
'attributes' => [
|
|
'href' => UriFactory::build($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']))
|
|
{
|
|
$Element['nonNestables'] = [];
|
|
}
|
|
|
|
if (\is_string($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 $this->elementApplyRecursive([$this, 'handle'], $Element);
|
|
}
|
|
|
|
protected function handleElementsRecursive(array $Elements)
|
|
{
|
|
return $this->elementsApplyRecursive([$this, 'handle'], $Elements);
|
|
}
|
|
|
|
protected function elementApplyRecursive($closure, array $Element)
|
|
{
|
|
$Element = $closure($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']);
|
|
}
|
|
|
|
return $closure($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']);
|
|
} elseif (!$permitRawHtml) {
|
|
$markup .= self::escape($text, true);
|
|
}
|
|
else
|
|
{
|
|
$markup .= $text;
|
|
}
|
|
|
|
$markup .= $hasName ? '</' . $Element['name'] . '>' : '';
|
|
}
|
|
elseif ($hasName)
|
|
{
|
|
$markup .= ' />';
|
|
}
|
|
|
|
return $markup;
|
|
}
|
|
|
|
protected function elements(array $Elements): string
|
|
{
|
|
$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 ? $autoBreakNext : $autoBreak;
|
|
|
|
$markup .= ($autoBreak ? "\n" : '') . $this->element($Element);
|
|
$autoBreak = $autoBreakNext;
|
|
}
|
|
|
|
return $markup . ($autoBreak ? "\n" : '');
|
|
}
|
|
|
|
# ~
|
|
|
|
protected function li($lines)
|
|
{
|
|
$Elements = $this->linesElements($lines);
|
|
|
|
if (! \in_array('', $lines)
|
|
&& isset($Elements[0], $Elements[0]['name'])
|
|
&& $Elements[0]['name'] === 'p'
|
|
) {
|
|
unset($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)
|
|
{
|
|
$newElements = [];
|
|
|
|
while (\preg_match($regexp, $text, $matches, \PREG_OFFSET_CAPTURE))
|
|
{
|
|
$offset = (int) $matches[0][1];
|
|
$before = \substr($text, 0, $offset);
|
|
$after = \substr($text, $offset + \strlen($matches[0][0]));
|
|
|
|
$newElements[] = ['text' => $before];
|
|
|
|
foreach ($Elements as $Element)
|
|
{
|
|
$newElements[] = $Element;
|
|
}
|
|
|
|
$text = $after;
|
|
}
|
|
|
|
$newElements[] = ['text' => $text];
|
|
|
|
return $newElements;
|
|
}
|
|
|
|
#
|
|
# Deprecated Methods
|
|
#
|
|
|
|
public static function parse($text)
|
|
{
|
|
$parsedown = new self();
|
|
|
|
return $parsedown->text($text);
|
|
}
|
|
|
|
protected function sanitiseElement(array $Element)
|
|
{
|
|
static $goodAttribute = '/^[a-zA-Z0-9][a-zA-Z0-9-_]*+$/';
|
|
static $safeUrlNameToAtt = [
|
|
'a' => 'href',
|
|
'img' => 'src',
|
|
];
|
|
|
|
if (! isset($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, $allowQuotes = false): string
|
|
{
|
|
return \htmlspecialchars($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);
|
|
}
|
|
}
|
|
|
|
public 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 array $instances = [];
|
|
|
|
#
|
|
# Fields
|
|
#
|
|
|
|
protected $DefinitionData;
|
|
|
|
#
|
|
# Read-Only
|
|
|
|
protected array $specialCharacters = [
|
|
'\\', '`', '*', '_', '{', '}', '[', ']', '(', ')', '>', '#', '+', '-', '.', '!', '|', '~',
|
|
];
|
|
|
|
protected array $StrongRegex = [
|
|
'*' => '/^[*]{2}((?:\\\\\*|[^*]|[*][^*]*+[*])+?)[*]{2}(?![*])/s',
|
|
'_' => '/^__((?:\\\\_|[^_]|_[^_]*+_)+?)__(?!_)/us',
|
|
];
|
|
|
|
protected array $EmRegex = [
|
|
'*' => '/^[*]((?:\\\\\*|[^*]|[*][*][^*]+?[*][*])+?)[*](?![*])/s',
|
|
'_' => '/^_((?:\\\\_|[^_]|__[^_]*__)+?)_(?!_)\b/us',
|
|
];
|
|
|
|
protected string $regexHtmlAttribute = '[a-zA-Z_:][\w:.-]*+(?:\s*+=\s*+(?:[^"\'=<>`\s]+|"[^"]*+"|\'[^\']*+\'))?+';
|
|
|
|
protected array $voidElements = [
|
|
'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source',
|
|
];
|
|
|
|
protected array $textLevelElements = [
|
|
'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',
|
|
];
|
|
}
|