<?php use Friendica\App; use Friendica\Core\System; use Friendica\Model\Contact; use Friendica\Network\Probe; use League\HTMLToMarkdown\HtmlConverter; require_once 'include/event.php'; require_once 'library/markdown.php'; require_once 'include/html2bbcode.php'; require_once 'include/bbcode.php'; /** * @brief Callback function to replace a Diaspora style mention in a mention for Friendica * * @param array $match Matching values for the callback * @return string Replaced mention */ function diaspora_mention2bb($match) { if ($match[2] == '') { return; } $data = Contact::getDetailsByAddr($match[2]); $name = $match[1]; if ($name == '') { $name = $data['name']; } return '@[url=' . $data['url'] . ']' . $name . '[/url]'; } /* * we don't want to support a bbcode specific markdown interpreter * and the markdown library we have is pretty good, but provides HTML output. * So we'll use that to convert to HTML, then convert the HTML back to bbcode, * and then clean up a few Diaspora specific constructs. */ function diaspora2bb($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(array('</p>', '<p>', '<p dir="ltr">'), array('<br>', '<br>', '<br>'), $s); // Escaping the hash tags $s = preg_replace('/\#([^\s\#])/', '#$1', $s); $s = Markdown($s); $regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/"; $s = preg_replace_callback($regexp, 'diaspora_mention2bb', $s); $s = str_replace('#', '#', $s); $s = html2bbcode($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 = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s); $s = bb_tag_preg_replace('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s); $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s); $s = bb_tag_preg_replace('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/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) $s = scale_external_images($s, false); return $s; } /** * @brief Callback function to replace a Friendica style mention in a mention for Diaspora * * @param array $match Matching values for the callback * @return string Replaced mention */ function diaspora_mentions($match) { $contact = Contact::getDetailsByURL($match[3]); if (!x($contact, 'addr')) { $contact = Probe::uri($match[3]); } if (!x($contact, 'addr')) { return $match[0]; } $mention = '@{' . $match[2] . '; ' . $contact['addr'] . '}'; return $mention; } /** * @brief Converts a BBCode text into Markdown * * This function converts a BBCode item body to be sent to Markdown-enabled * systems like Diaspora and Libertree * * @param string $Text * @param bool $preserve_nl Effects unclear, unused in Friendica * @param bool $fordiaspora Diaspora requires more changes than Libertree * @return string */ function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) { $a = get_app(); $OriginalText = $Text; // Since Diaspora is creating a summary for links, this function removes them before posting if ($fordiaspora) { $Text = bb_remove_share_information($Text); } /** * Transform #tags, strip off the [url] and replace spaces with underscore */ $URLSearchString = "^\[\]"; $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i", function ($matches) { return '#' . str_replace(' ', '_', $matches[2]); } , $Text); // Converting images with size parameters to simple images. Markdown doesn't know it. $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text); // Extracting multi-line code blocks before the whitespace processing/code highlighter in bbcode() $codeblocks = []; $Text = preg_replace_callback('#\[code(?:=([^\]]*))?\](?=\n)(.*?)\[\/code\]#is', function ($matches) use (&$codeblocks) { $return = '#codeblock-' . count($codeblocks) . '#'; $prefix = '````' . $matches[1] . PHP_EOL; $codeblocks[] = $prefix . trim($matches[2]) . PHP_EOL . '````'; return $return; } , $Text); // Convert it to HTML - don't try oembed if ($fordiaspora) { $Text = bbcode($Text, $preserve_nl, false, 3); // Add all tags that maybe were removed if (preg_match_all("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $OriginalText, $tags)) { $tagline = ""; foreach ($tags[2] as $tag) { $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8'); if (!strpos(html_entity_decode($Text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) { $tagline .= '#' . $tag . ' '; } } $Text = $Text." ".$tagline; } } else { $Text = bbcode($Text, $preserve_nl, false, 4); } // mask some special HTML chars from conversation to markdown $Text = str_replace(array('<', '>', '&'), array('&_lt_;', '&_gt_;', '&_amp_;'), $Text); // If a link is followed by a quote then there should be a newline before it // Maybe we should make this newline at every time before a quote. $Text = str_replace(array("</a><blockquote>"), array("</a><br><blockquote>"), $Text); $stamp1 = microtime(true); // Now convert HTML to Markdown $converter = new HtmlConverter(); $Text = $converter->convert($Text); // unmask the special chars back to HTML $Text = str_replace(array('&\_lt\_;', '&\_gt\_;', '&\_amp\_;'), array('<', '>', '&'), $Text); $a->save_timestamp($stamp1, "parser"); // Libertree has a problem with escaped hashtags. $Text = str_replace(array('\#'), array('#'), $Text); // Remove any leading or trailing whitespace, as this will mess up // the Diaspora signature verification and cause the item to disappear $Text = trim($Text); if ($fordiaspora) { $URLSearchString = "^\[\]"; $Text = preg_replace_callback("/([@]\[(.*?)\])\(([$URLSearchString]*?)\)/ism", 'diaspora_mentions', $Text); } // Restore code blocks $Text = preg_replace_callback('/#codeblock-([0-9]+)#/iU', function ($matches) use ($codeblocks) { $return = ''; if (isset($codeblocks[intval($matches[1])])) { $return = $codeblocks[$matches[1]]; } return $return; } , $Text); call_hooks('bb2diaspora',$Text); return $Text; } function unescape_underscores_in_links($m) { $y = str_replace('\\_', '_', $m[2]); return('[' . $m[1] . '](' . $y . ')'); } function format_event_diaspora($ev) { if (! ((is_array($ev)) && count($ev))) { return ''; } $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM $o = 'Friendica event notification:' . "\n"; $o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) . '**' . "\n"; $o .= t('Starts:') . ' ' . '[' . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', $ev['start'] , $bd_format )) : day_translate(datetime_convert('UTC', 'UTC', $ev['start'] , $bd_format))) . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n"; if (! $ev['nofinish']) { $o .= t('Finishes:') . ' ' . '[' . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC', $ev['finish'] , $bd_format )) : day_translate(datetime_convert('UTC', 'UTC', $ev['finish'] , $bd_format ))) . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n"; } if (strlen($ev['location'])) { $o .= t('Location:') . bb2diaspora($ev['location']) . "\n"; } $o .= "\n"; return $o; }