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vendor/cebe/markdown/GithubMarkdown.php

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+<?php
+/**
+ * @copyright Copyright (c) 2014 Carsten Brandt
+ * @license https://github.com/cebe/markdown/blob/master/LICENSE
+ * @link https://github.com/cebe/markdown#readme
+ */
+
+namespace cebe\markdown;
+
+/**
+ * Markdown parser for github flavored markdown.
+ *
+ * @author Carsten Brandt <mail@cebe.cc>
+ */
+class GithubMarkdown extends Markdown
+{
+	// include block element parsing using traits
+	use block\TableTrait;
+	use block\FencedCodeTrait;
+
+	// include inline element parsing using traits
+	use inline\StrikeoutTrait;
+	use inline\UrlLinkTrait;
+
+	/**
+	 * @var boolean whether to interpret newlines as `<br />`-tags.
+	 * This feature is useful for comments where newlines are often meant to be real new lines.
+	 */
+	public $enableNewlines = false;
+
+	/**
+	 * @inheritDoc
+	 */
+	protected $escapeCharacters = [
+		// from Markdown
+		'\\', // backslash
+		'`', // backtick
+		'*', // asterisk
+		'_', // underscore
+		'{', '}', // curly braces
+		'[', ']', // square brackets
+		'(', ')', // parentheses
+		'#', // hash mark
+		'+', // plus sign
+		'-', // minus sign (hyphen)
+		'.', // dot
+		'!', // exclamation mark
+		'<', '>',
+		// added by GithubMarkdown
+		':', // colon
+		'|', // pipe
+	];
+
+
+
+	/**
+	 * Consume lines for a paragraph
+	 *
+	 * Allow headlines, lists and code to break paragraphs
+	 */
+	protected function consumeParagraph($lines, $current)
+	{
+		// consume until newline
+		$content = [];
+		for ($i = $current, $count = count($lines); $i < $count; $i++) {
+			$line = $lines[$i];
+			if ($line === ''
+				|| ltrim($line) === ''
+				|| !ctype_alpha($line[0]) && (
+					$this->identifyQuote($line, $lines, $i) ||
+					$this->identifyFencedCode($line, $lines, $i) ||
+					$this->identifyUl($line, $lines, $i) ||
+					$this->identifyOl($line, $lines, $i) ||
+					$this->identifyHr($line, $lines, $i)
+				)
+				|| $this->identifyHeadline($line, $lines, $i))
+			{
+				break;
+			} elseif ($this->identifyCode($line, $lines, $i)) {
+				// possible beginning of a code block
+				// but check for continued inline HTML
+				// e.g. <img src="file.jpg"
+				//           alt="some alt aligned with src attribute" title="some text" />
+				if (preg_match('~<\w+([^>]+)$~s', implode("\n", $content))) {
+					$content[] = $line;
+				} else {
+					break;
+				}
+			} else {
+				$content[] = $line;
+			}
+		}
+		$block = [
+			'paragraph',
+			'content' => $this->parseInline(implode("\n", $content)),
+		];
+		return [$block, --$i];
+	}
+
+	/**
+	 * @inheritdocs
+	 *
+	 * Parses a newline indicated by two spaces on the end of a markdown line.
+	 */
+	protected function renderText($text)
+	{
+		if ($this->enableNewlines) {
+			$br = $this->html5 ? "<br>\n" : "<br />\n";
+			return strtr($text[1], ["  \n" => $br, "\n" => $br]);
+		} else {
+			return parent::renderText($text);
+		}
+	}
+}