4 use Friendica\Core\System;
5 use Friendica\Model\Contact;
6 use Friendica\Network\Probe;
8 use League\HTMLToMarkdown\HtmlConverter;
10 require_once 'include/oembed.php';
11 require_once 'include/event.php';
12 require_once 'library/markdown.php';
13 require_once 'include/html2bbcode.php';
14 require_once 'include/bbcode.php';
17 * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
19 * @param array $match Matching values for the callback
20 * @return string Replaced mention
22 function diaspora_mention2bb($match) {
23 if ($match[2] == '') {
27 $data = Contact::getDetailsByAddr($match[2]);
32 $name = $data['name'];
35 return '@[url=' . $data['url'] . ']' . $name . '[/url]';
39 * we don't want to support a bbcode specific markdown interpreter
40 * and the markdown library we have is pretty good, but provides HTML output.
41 * So we'll use that to convert to HTML, then convert the HTML back to bbcode,
42 * and then clean up a few Diaspora specific constructs.
44 function diaspora2bb($s) {
46 $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
48 // Handles single newlines
49 $s = str_replace("\r\n", "\n", $s);
50 $s = str_replace("\n", " \n", $s);
51 $s = str_replace("\r", " \n", $s);
53 // Replace lonely stars in lines not starting with it with literal stars
54 $s = preg_replace('/^([^\*]+)\*([^\*]*)$/im', '$1\*$2', $s);
56 // The parser cannot handle paragraphs correctly
57 $s = str_replace(array('</p>', '<p>', '<p dir="ltr">'), array('<br>', '<br>', '<br>'), $s);
59 // Escaping the hash tags
60 $s = preg_replace('/\#([^\s\#])/', '#$1', $s);
64 $regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/";
65 $s = preg_replace_callback($regexp, 'diaspora_mention2bb', $s);
67 $s = str_replace('#', '#', $s);
71 // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
72 $s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s);
74 // Convert everything that looks like a link to a link
75 $s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?<!,))/ism', '$1[url=$2$3]$2$3[/url]', $s);
77 //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
78 $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
79 $s = bb_tag_preg_replace('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s);
80 $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s);
81 $s = bb_tag_preg_replace('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism' , '[vimeo]$1[/vimeo]' , 'url', $s);
83 // remove duplicate adjacent code tags
84 $s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
86 // Don't show link to full picture (until it is fixed)
87 $s = scale_external_images($s, false);
93 * @brief Callback function to replace a Friendica style mention in a mention for Diaspora
95 * @param array $match Matching values for the callback
96 * @return string Replaced mention
98 function diaspora_mentions($match) {
100 $contact = Contact::getDetailsByURL($match[3]);
102 if (!x($contact, 'addr')) {
103 $contact = Probe::uri($match[3]);
106 if (!x($contact, 'addr')) {
110 $mention = '@{' . $match[2] . '; ' . $contact['addr'] . '}';
115 * @brief Converts a BBCode text into Markdown
117 * This function converts a BBCode item body to be sent to Markdown-enabled
118 * systems like Diaspora and Libertree
120 * @param string $Text
121 * @param bool $preserve_nl Effects unclear, unused in Friendica
122 * @param bool $fordiaspora Diaspora requires more changes than Libertree
125 function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
128 $OriginalText = $Text;
130 // Since Diaspora is creating a summary for links, this function removes them before posting
132 $Text = bb_remove_share_information($Text);
136 * Transform #tags, strip off the [url] and replace spaces with underscore
138 $URLSearchString = "^\[\]";
139 $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
140 function ($matches) {
141 return '#' . str_replace(' ', '_', $matches[2]);
145 // Converting images with size parameters to simple images. Markdown doesn't know it.
146 $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
148 // Extracting multi-line code blocks before the whitespace processing/code highlighter in bbcode()
150 $Text = preg_replace_callback('#\[code(?:=([^\]]*))?\](?=\n)(.*?)\[\/code\]#is',
151 function ($matches) use (&$codeblocks) {
152 $return = '#codeblock-' . count($codeblocks) . '#';
154 $prefix = '````' . $matches[1] . PHP_EOL;
155 $codeblocks[] = $prefix . trim($matches[2]) . PHP_EOL . '````';
160 // Convert it to HTML - don't try oembed
162 $Text = bbcode($Text, $preserve_nl, false, 3);
164 // Add all tags that maybe were removed
165 if (preg_match_all("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $OriginalText, $tags)) {
167 foreach ($tags[2] as $tag) {
168 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
169 if (!strpos(html_entity_decode($Text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
170 $tagline .= '#' . $tag . ' ';
173 $Text = $Text." ".$tagline;
176 $Text = bbcode($Text, $preserve_nl, false, 4);
179 // mask some special HTML chars from conversation to markdown
180 $Text = str_replace(array('<', '>', '&'), array('&_lt_;', '&_gt_;', '&_amp_;'), $Text);
182 // If a link is followed by a quote then there should be a newline before it
183 // Maybe we should make this newline at every time before a quote.
184 $Text = str_replace(array("</a><blockquote>"), array("</a><br><blockquote>"), $Text);
186 $stamp1 = microtime(true);
188 // Now convert HTML to Markdown
189 $converter = new HtmlConverter();
190 $Text = $converter->convert($Text);
192 // unmask the special chars back to HTML
193 $Text = str_replace(array('&\_lt\_;', '&\_gt\_;', '&\_amp\_;'), array('<', '>', '&'), $Text);
195 $a->save_timestamp($stamp1, "parser");
197 // Libertree has a problem with escaped hashtags.
198 $Text = str_replace(array('\#'), array('#'), $Text);
200 // Remove any leading or trailing whitespace, as this will mess up
201 // the Diaspora signature verification and cause the item to disappear
205 $URLSearchString = "^\[\]";
206 $Text = preg_replace_callback("/([@]\[(.*?)\])\(([$URLSearchString]*?)\)/ism", 'diaspora_mentions', $Text);
209 // Restore code blocks
210 $Text = preg_replace_callback('/#codeblock-([0-9]+)#/iU',
211 function ($matches) use ($codeblocks) {
213 if (isset($codeblocks[intval($matches[1])])) {
214 $return = $codeblocks[$matches[1]];
220 call_hooks('bb2diaspora',$Text);
225 function unescape_underscores_in_links($m) {
226 $y = str_replace('\\_', '_', $m[2]);
227 return('[' . $m[1] . '](' . $y . ')');
230 function format_event_diaspora($ev) {
231 if (! ((is_array($ev)) && count($ev))) {
235 $bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
237 $o = 'Friendica event notification:' . "\n";
239 $o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) . '**' . "\n";
241 $o .= t('Starts:') . ' ' . '['
242 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
243 $ev['start'] , $bd_format ))
244 : day_translate(datetime_convert('UTC', 'UTC',
245 $ev['start'] , $bd_format)))
246 . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
248 if (! $ev['nofinish']) {
249 $o .= t('Finishes:') . ' ' . '['
250 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
251 $ev['finish'] , $bd_format ))
252 : day_translate(datetime_convert('UTC', 'UTC',
253 $ev['finish'] , $bd_format )))
254 . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
257 if (strlen($ev['location'])) {
258 $o .= t('Location:') . bb2diaspora($ev['location'])