-<?php\r
-\r
-/**\r
- * @file src/Content/Text/Markdown.php\r
- */\r
-\r
-namespace Friendica\Content\Text;\r
-\r
-use Friendica\BaseObject;\r
-use Michelf\MarkdownExtra;\r
-\r
-/**\r
- * Friendica-specific usage of Markdown\r
- *\r
- * @author Hypolite Petovan <mrpetovan@gmail.com>\r
- */\r
-class Markdown extends BaseObject\r
-{\r
- /**\r
- * Converts a Markdown string into HTML. The hardwrap parameter maximizes\r
- * compatibility with Diaspora in spite of the Markdown standard.\r
- *\r
- * @brief Converts a Markdown string into HTML\r
- * @param string $text\r
- * @param bool $hardwrap\r
- * @return string\r
- */\r
- public static function convert($text, $hardwrap = true) {\r
- $stamp1 = microtime(true);\r
-\r
- $MarkdownParser = new MarkdownExtra();\r
- $MarkdownParser->hard_wrap = $hardwrap;\r
- $html = $MarkdownParser->transform($text);\r
-\r
- self::getApp()->save_timestamp($stamp1, "parser");\r
-\r
- return $html;\r
- }\r
-}\r
+<?php
+
+/**
+ * @file src/Content/Text/Markdown.php
+ */
+
+namespace Friendica\Content\Text;
+
+use Friendica\BaseObject;
+use Friendica\Model\Contact;
+use Michelf\MarkdownExtra;
+use Friendica\Content\Text\HTML;
+
+/**
+ * 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 $hardwrap
+ * @return string
+ */
+ public static function convert($text, $hardwrap = true) {
+ $stamp1 = microtime(true);
+
+ $MarkdownParser = new MarkdownExtra();
+ $MarkdownParser->hard_wrap = $hardwrap;
+ $MarkdownParser->code_class_prefix = 'language-';
+ $html = $MarkdownParser->transform($text);
+
+ self::getApp()->save_timestamp($stamp1, "parser");
+
+ return $html;
+ }
+
+ /**
+ * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
+ *
+ * @param array $match Matching values for the callback
+ * @return string Replaced mention
+ */
+ private static function diasporaMention2BBCodeCallback($match)
+ {
+ if ($match[2] == '') {
+ return;
+ }
+
+ $data = Contact::getDetailsByAddr($match[2]);
+
+ if (empty($data)) {
+ return;
+ }
+
+ $name = $match[1];
+
+ if ($name == '') {
+ $name = $data['name'];
+ }
+
+ return '@[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');
+
+ // Handles single newlines
+ $s = str_replace("\r\n", "\n", $s);
+ $s = str_replace("\n", " \n", $s);
+ $s = str_replace("\r", " \n", $s);
+
+ // Replace lonely stars in lines not starting with it with literal stars
+ $s = preg_replace('/^([^\*]+)\*([^\*]*)$/im', '$1\*$2', $s);
+
+ // The parser cannot handle paragraphs correctly
+ $s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
+
+ // Escaping the hash tags
+ $s = preg_replace('/\#([^\s\#])/', '#$1', $s);
+
+ $s = self::convert($s);
+
+ $regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/";
+ $s = preg_replace_callback($regexp, ['self', 'diasporaMention2BBCodeCallback'], $s);
+
+ $s = str_replace('#', '#', $s);
+
+ $s = HTML::toBBCode($s);
+
+ // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
+ $s = str_replace('♲', html_entity_decode('♲', 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;
+ }
+}