X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FContent%2FText%2FMarkdown.php;h=0687b5377b0e82bf408251bcecdc7562d2deb652;hb=78a7e130ae7f5e5bca1fa51a49000ae3ef7a16f5;hp=2615aa411f91e4dc18f2c52f48729a52a57a1265;hpb=0e3fe14024da48ea599aaf3d67cc17e189ffce3f;p=friendica.git diff --git a/src/Content/Text/Markdown.php b/src/Content/Text/Markdown.php index 2615aa411f..0687b5377b 100644 --- a/src/Content/Text/Markdown.php +++ b/src/Content/Text/Markdown.php @@ -1,39 +1,123 @@ - - */ -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; - } -} + + */ +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(['
', '', '
'], ['
', '
', '
'], $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:\/\-?&;.=_~#%$!+,@]+(?