3 use Friendica\Content\Text\BBCode;
4 use Friendica\Content\Text\Markdown;
5 use Friendica\Core\Addon;
6 use Friendica\Core\System;
7 use Friendica\Model\Contact;
8 use Friendica\Network\Probe;
9 use League\HTMLToMarkdown\HtmlConverter;
11 require_once 'include/event.php';
12 require_once 'include/html2bbcode.php';
13 require_once 'include/bbcode.php';
16 * @brief Callback function to replace a Diaspora style mention in a mention for Friendica
18 * @param array $match Matching values for the callback
19 * @return string Replaced mention
21 function diaspora_mention2bb($match) {
22 if ($match[2] == '') {
26 $data = Contact::getDetailsByAddr($match[2]);
31 $name = $data['name'];
34 return '@[url=' . $data['url'] . ']' . $name . '[/url]';
38 * we don't want to support a bbcode specific markdown interpreter
39 * and the markdown library we have is pretty good, but provides HTML output.
40 * So we'll use that to convert to HTML, then convert the HTML back to bbcode,
41 * and then clean up a few Diaspora specific constructs.
43 function diaspora2bb($s) {
45 $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
47 // Handles single newlines
48 $s = str_replace("\r\n", "\n", $s);
49 $s = str_replace("\n", " \n", $s);
50 $s = str_replace("\r", " \n", $s);
52 // Replace lonely stars in lines not starting with it with literal stars
53 $s = preg_replace('/^([^\*]+)\*([^\*]*)$/im', '$1\*$2', $s);
55 // The parser cannot handle paragraphs correctly
56 $s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
58 // Escaping the hash tags
59 $s = preg_replace('/\#([^\s\#])/', '#$1', $s);
61 $s = Markdown::convert($s);
63 $regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/";
64 $s = preg_replace_callback($regexp, 'diaspora_mention2bb', $s);
66 $s = str_replace('#', '#', $s);
70 // protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
71 $s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s);
73 // Convert everything that looks like a link to a link
74 $s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?<!,))/ism', '$1[url=$2$3]$2$3[/url]', $s);
76 //$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
77 $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
78 $s = bb_tag_preg_replace('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s);
79 $s = bb_tag_preg_replace('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s);
80 $s = bb_tag_preg_replace('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism' , '[vimeo]$1[/vimeo]' , 'url', $s);
82 // remove duplicate adjacent code tags
83 $s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
85 // Don't show link to full picture (until it is fixed)
86 $s = BBCode::scaleExternalImages($s, false);
92 * @brief Callback function to replace a Friendica style mention in a mention for Diaspora
94 * @param array $match Matching values for the callback
95 * @return string Replaced mention
97 function diaspora_mentions($match) {
99 $contact = Contact::getDetailsByURL($match[3]);
101 if (!x($contact, 'addr')) {
102 $contact = Probe::uri($match[3]);
105 if (!x($contact, 'addr')) {
109 $mention = '@{' . $match[2] . '; ' . $contact['addr'] . '}';
114 * @brief Converts a BBCode text into Markdown
116 * This function converts a BBCode item body to be sent to Markdown-enabled
117 * systems like Diaspora and Libertree
119 * @param string $Text
120 * @param bool $preserve_nl Effects unclear, unused in Friendica
121 * @param bool $fordiaspora Diaspora requires more changes than Libertree
124 function bb2diaspora($Text, $preserve_nl = false, $fordiaspora = true) {
127 $OriginalText = $Text;
129 // Since Diaspora is creating a summary for links, this function removes them before posting
131 $Text = bb_remove_share_information($Text);
135 * Transform #tags, strip off the [url] and replace spaces with underscore
137 $URLSearchString = "^\[\]";
138 $Text = preg_replace_callback("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
139 function ($matches) {
140 return '#' . str_replace(' ', '_', $matches[2]);
144 // Converting images with size parameters to simple images. Markdown doesn't know it.
145 $Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
147 // Extracting multi-line code blocks before the whitespace processing/code highlighter in bbcode()
150 $Text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#is",
151 function ($matches) use (&$codeblocks) {
152 $return = $matches[0];
153 if (strpos($matches[2], "\n") !== false) {
154 $return = '#codeblock-' . count($codeblocks) . '#';
156 $prefix = '````' . $matches[1] . PHP_EOL;
157 $codeblocks[] = $prefix . trim($matches[2]) . PHP_EOL . '````';
163 // Convert it to HTML - don't try oembed
165 $Text = bbcode($Text, $preserve_nl, false, 3);
167 // Add all tags that maybe were removed
168 if (preg_match_all("/#\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $OriginalText, $tags)) {
170 foreach ($tags[2] as $tag) {
171 $tag = html_entity_decode($tag, ENT_QUOTES, 'UTF-8');
172 if (!strpos(html_entity_decode($Text, ENT_QUOTES, 'UTF-8'), '#' . $tag)) {
173 $tagline .= '#' . $tag . ' ';
176 $Text = $Text." ".$tagline;
179 $Text = bbcode($Text, $preserve_nl, false, 4);
182 // mask some special HTML chars from conversation to markdown
183 $Text = str_replace(['<', '>', '&'], ['&_lt_;', '&_gt_;', '&_amp_;'], $Text);
185 // If a link is followed by a quote then there should be a newline before it
186 // Maybe we should make this newline at every time before a quote.
187 $Text = str_replace(["</a><blockquote>"], ["</a><br><blockquote>"], $Text);
189 $stamp1 = microtime(true);
191 // Now convert HTML to Markdown
192 $converter = new HtmlConverter();
193 $Text = $converter->convert($Text);
195 // unmask the special chars back to HTML
196 $Text = str_replace(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['<', '>', '&'], $Text);
198 $a->save_timestamp($stamp1, "parser");
200 // Libertree has a problem with escaped hashtags.
201 $Text = str_replace(['\#'], ['#'], $Text);
203 // Remove any leading or trailing whitespace, as this will mess up
204 // the Diaspora signature verification and cause the item to disappear
208 $URLSearchString = "^\[\]";
209 $Text = preg_replace_callback("/([@]\[(.*?)\])\(([$URLSearchString]*?)\)/ism", 'diaspora_mentions', $Text);
212 // Restore code blocks
213 $Text = preg_replace_callback('/#codeblock-([0-9]+)#/iU',
214 function ($matches) use ($codeblocks) {
216 if (isset($codeblocks[intval($matches[1])])) {
217 $return = $codeblocks[$matches[1]];
223 Addon::callHooks('bb2diaspora',$Text);
228 function unescape_underscores_in_links($m) {
229 $y = str_replace('\\_', '_', $m[2]);
230 return('[' . $m[1] . '](' . $y . ')');
233 function format_event_diaspora($ev) {
234 if (! ((is_array($ev)) && count($ev))) {
238 $bd_format = L10n::t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
240 $o = 'Friendica event notification:' . "\n";
242 $o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) . '**' . "\n";
244 $o .= L10n::t('Starts:') . ' ' . '['
245 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
246 $ev['start'] , $bd_format ))
247 : day_translate(datetime_convert('UTC', 'UTC',
248 $ev['start'] , $bd_format)))
249 . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
251 if (! $ev['nofinish']) {
252 $o .= L10n::t('Finishes:') . ' ' . '['
253 . (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
254 $ev['finish'] , $bd_format ))
255 : day_translate(datetime_convert('UTC', 'UTC',
256 $ev['finish'] , $bd_format )))
257 . '](' . System::baseUrl() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
260 if (strlen($ev['location'])) {
261 $o .= L10n::t('Location:') . bb2diaspora($ev['location'])