X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FContent%2FText%2FMarkdown.php;h=a715de7e97e1debba48f30ebe558864bd42962b9;hb=6bb418c5a7cdd71d28a8a572059efb14401b70bd;hp=2615aa411f91e4dc18f2c52f48729a52a57a1265;hpb=fabbf810b0b830bab695d957b1f4ebb85afbd990;p=friendica.git

diff --git a/src/Content/Text/Markdown.php b/src/Content/Text/Markdown.php
index 2615aa411f..a715de7e97 100644
--- a/src/Content/Text/Markdown.php
+++ b/src/Content/Text/Markdown.php
@@ -1,39 +1,126 @@
-<?php
-
-/**
- * @file src/Content/Text/Markdown.php
- */
-
-namespace Friendica\Content\Text;
-
-use Friendica\BaseObject;
-use Michelf\MarkdownExtra;
-
-/**
- * Friendica-specific usage of Markdown
- *
- * @author Hypolite Petovan <mrpetovan@gmail.com>
- */
-class Markdown extends BaseObject
-{
-	/**
-	 * Converts a Markdown string into HTML. The hardwrap parameter maximizes
-	 * compatibility with Diaspora in spite of the Markdown standard.
-	 *
-	 * @brief Converts a Markdown string into HTML
-	 * @param string $text
-	 * @param bool   $hardwrap
-	 * @return string
-	 */
-	public static function convert($text, $hardwrap = true) {
-		$stamp1 = microtime(true);
-
-		$MarkdownParser = new MarkdownExtra();
-		$MarkdownParser->hard_wrap = $hardwrap;
-		$html = $MarkdownParser->transform($text);
-
-		self::getApp()->save_timestamp($stamp1, "parser");
-
-		return $html;
-	}
-}
+<?php
+
+/**
+ * @file src/Content/Text/Markdown.php
+ */
+
+namespace Friendica\Content\Text;
+
+use Friendica\BaseObject;
+use Friendica\Core\System;
+use Friendica\Model\Contact;
+
+/**
+ * Friendica-specific usage of Markdown
+ *
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
+ */
+class Markdown extends BaseObject
+{
+	/**
+	 * Converts a Markdown string into HTML. The hardwrap parameter maximizes
+	 * compatibility with Diaspora in spite of the Markdown standard.
+	 *
+	 * @brief Converts a Markdown string into HTML
+	 * @param string $text
+	 * @param bool   $hardwrap
+	 * @return string
+	 * @throws \Exception
+	 */
+	public static function convert($text, $hardwrap = true) {
+		$stamp1 = microtime(true);
+
+		$MarkdownParser = new MarkdownParser();
+		$MarkdownParser->code_class_prefix  = 'language-';
+		$MarkdownParser->hard_wrap          = $hardwrap;
+		$MarkdownParser->hashtag_protection = true;
+		$MarkdownParser->url_filter_func    = function ($url) {
+			if (strpos($url, '#') === 0) {
+				$url = ltrim($_SERVER['REQUEST_URI'], '/') . $url;
+			}
+			return  $url;
+		};
+
+		$html = $MarkdownParser->transform($text);
+
+		self::getApp()->getProfiler()->saveTimestamp($stamp1, "parser", System::callstack());
+
+		return $html;
+	}
+
+	/**
+	 * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
+	 *
+	 * @param array $match Matching values for the callback
+	 *                     [1] = mention type (@ or !)
+	 *                     [2] = name (optional)
+	 *                     [3] = address
+	 * @return string Replaced mention
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 */
+	private static function diasporaMention2BBCodeCallback($match)
+	{
+		if ($match[3] == '') {
+			return;
+		}
+
+		$data = Contact::getDetailsByAddr($match[3]);
+
+		if (empty($data)) {
+			return;
+		}
+
+		$name = $match[2];
+
+		if ($name == '') {
+			$name = $data['name'];
+		}
+
+		return $match[1] . '[url=' . $data['url'] . ']' . $name . '[/url]';
+	}
+
+	/*
+	 * we don't want to support a bbcode specific markdown interpreter
+	 * and the markdown library we have is pretty good, but provides HTML output.
+	 * So we'll use that to convert to HTML, then convert the HTML back to bbcode,
+	 * and then clean up a few Diaspora specific constructs.
+	 */
+	public static function toBBCode($s)
+	{
+		$s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
+
+		// The parser cannot handle paragraphs correctly
+		$s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
+
+		// Escaping hashtags that could be titles
+		$s = preg_replace('/^\#([^\s\#])/im', '\#$1', $s);
+
+		$s = self::convert($s);
+
+		$regexp = "/([@!])\{(?:([^\}]+?); ?)?([^\} ]+)\}/";
+		$s = preg_replace_callback($regexp, ['self', 'diasporaMention2BBCodeCallback'], $s);
+
+		$s = HTML::toBBCode($s);
+
+		// protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
+		$s = str_replace('&#x2672;', html_entity_decode('&#x2672;', ENT_QUOTES, 'UTF-8'), $s);
+
+		// Convert everything that looks like a link to a link
+		$s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?<!,))/ism', '$1[url=$2$3]$2$3[/url]', $s);
+
+		//$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
+		$s = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
+		$s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism'   , '[youtube]$1[/youtube]', 'url', $s);
+		$s = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism'        , '[vimeo]$2[/vimeo]'    , 'url', $s);
+		$s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism'              , '[vimeo]$1[/vimeo]'    , 'url', $s);
+
+		// remove duplicate adjacent code tags
+		$s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
+
+		// Don't show link to full picture (until it is fixed)
+		$s = BBCode::scaleExternalImages($s, false);
+
+		return $s;
+	}
+}