Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Content/Text/BBCode.php
*/
namespace Friendica\Content\Text;
use DOMDocument;
use DomXPath;
use Exception;
use Friendica\BaseObject;
use Friendica\Content\OEmbed;
use Friendica\Content\Smilies;
use Friendica\Core\Addon;
use Friendica\Core\Cache;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\PConfig;
use Friendica\Core\Protocol;
use Friendica\Core\System;
use Friendica\Model\Contact;
use Friendica\Network\Probe;
use Friendica\Object\Image;
use Friendica\Util\Map;
use Friendica\Util\Network;
use Friendica\Util\ParseUrl;
use League\HTMLToMarkdown\HtmlConverter;
require_once "include/event.php";
require_once "include/html2plain.php";
require_once "mod/proxy.php";
class BBCode extends BaseObject
{
/**
* @brief Fetches attachment data that were generated the old way
*
* @param string $body Message body
* @return array
* 'type' -> Message type ("link", "video", "photo")
* 'text' -> Text before the shared message
* 'after' -> Text after the shared message
* 'image' -> Preview image of the message
* 'url' -> Url to the attached message
* 'title' -> Title of the attachment
* 'description' -> Description of the attachment
*/
private static function getOldAttachmentData($body)
{
$post = [];
// Simplify image codes
$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
if (preg_match_all("(\[class=(.*?)\](.*?)\[\/class\])ism", $body, $attached, PREG_SET_ORDER)) {
foreach ($attached as $data) {
if (!in_array($data[1], ["type-link", "type-video", "type-photo"])) {
continue;
}
$post["type"] = substr($data[1], 5);
$pos = strpos($body, $data[0]);
if ($pos > 0) {
$post["text"] = trim(substr($body, 0, $pos));
$post["after"] = trim(substr($body, $pos + strlen($data[0])));
} else {
$post["text"] = trim(str_replace($data[0], "", $body));
}
$attacheddata = $data[2];
$URLSearchString = "^\[\]";
if (preg_match("/\[img\]([$URLSearchString]*)\[\/img\]/ism", $attacheddata, $matches)) {
$picturedata = Image::getInfoFromURL($matches[1]);
if (($picturedata[0] >= 500) && ($picturedata[0] >= $picturedata[1])) {
$post["image"] = $matches[1];
} else {
$post["preview"] = $matches[1];
}
}
if (preg_match("/\[bookmark\=([$URLSearchString]*)\](.*?)\[\/bookmark\]/ism", $attacheddata, $matches)) {
$post["url"] = $matches[1];
$post["title"] = $matches[2];
}
if (($post["url"] == "") && (in_array($post["type"], ["link", "video"]))
&& preg_match("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", $attacheddata, $matches)) {
$post["url"] = $matches[1];
}
// Search for description
if (preg_match("/\[quote\](.*?)\[\/quote\]/ism", $attacheddata, $matches)) {
$post["description"] = $matches[1];
}
}
}
return $post;
}
/**
* @brief Fetches attachment data that were generated with the "attachment" element
*
* @param string $body Message body
* @return array
* 'type' -> Message type ("link", "video", "photo")
* 'text' -> Text before the shared message
* 'after' -> Text after the shared message
* 'image' -> Preview image of the message
* 'url' -> Url to the attached message
* 'title' -> Title of the attachment
* 'description' -> Description of the attachment
*/
public static function getAttachmentData($body)
{
$data = [];
if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match)) {
return self::getOldAttachmentData($body);
}
$attributes = $match[2];
$data["text"] = trim($match[1]);
$type = "";
preg_match("/type='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$type = strtolower($matches[1]);
}
preg_match('/type="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$type = strtolower($matches[1]);
}
if ($type == "") {
return [];
}
if (!in_array($type, ["link", "audio", "photo", "video"])) {
return [];
}
if ($type != "") {
$data["type"] = $type;
}
$url = "";
preg_match("/url='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$url = $matches[1];
}
preg_match('/url="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$url = $matches[1];
}
if ($url != "") {
$data["url"] = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
}
$title = "";
preg_match("/title='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$title = $matches[1];
}
preg_match('/title="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$title = $matches[1];
}
if ($title != "") {
$title = self::convert(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, true);
$title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
$title = str_replace(["[", "]"], ["&#91;", "&#93;"], $title);
$data["title"] = $title;
}
$image = "";
preg_match("/image='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$image = $matches[1];
}
preg_match('/image="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$image = $matches[1];
}
if ($image != "") {
$data["image"] = html_entity_decode($image, ENT_QUOTES, 'UTF-8');
}
$preview = "";
preg_match("/preview='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$preview = $matches[1];
}
preg_match('/preview="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$preview = $matches[1];
}
if ($preview != "") {
$data["preview"] = html_entity_decode($preview, ENT_QUOTES, 'UTF-8');
}
$data["description"] = trim($match[3]);
$data["after"] = trim($match[4]);
return $data;
}
public static function getAttachedData($body, $item = [])
{
/*
- text:
- type: link, video, photo
- title:
- url:
- image:
- description:
- (thumbnail)
*/
$has_title = !empty($item['title']);
$plink = (!empty($item['plink']) ? $item['plink'] : '');
$post = self::getAttachmentData($body);
// if nothing is found, it maybe having an image.
if (!isset($post["type"])) {
// Simplify image codes
$body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
$URLSearchString = "^\[\]";
if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures, PREG_SET_ORDER)) {
if ((count($pictures) == 1) && !$has_title) {
// Checking, if the link goes to a picture
$data = ParseUrl::getSiteinfoCached($pictures[0][1], true);
// Workaround:
// Sometimes photo posts to the own album are not detected at the start.
// So we seem to cannot use the cache for these cases. That's strange.
if (($data["type"] != "photo") && strstr($pictures[0][1], "/photos/")) {
$data = ParseUrl::getSiteinfo($pictures[0][1], true);
}
if ($data["type"] == "photo") {
$post["type"] = "photo";
if (isset($data["images"][0])) {
$post["image"] = $data["images"][0]["src"];
$post["url"] = $data["url"];
} else {
$post["image"] = $data["url"];
}
$post["preview"] = $pictures[0][2];
$post["text"] = str_replace($pictures[0][0], "", $body);
} else {
$imgdata = Image::getInfoFromURL($pictures[0][1]);
if (substr($imgdata["mime"], 0, 6) == "image/") {
$post["type"] = "photo";
$post["image"] = $pictures[0][1];
$post["preview"] = $pictures[0][2];
$post["text"] = str_replace($pictures[0][0], "", $body);
}
}
} elseif (count($pictures) > 0) {
$post["type"] = "link";
$post["url"] = $plink;
$post["image"] = $pictures[0][2];
$post["text"] = $body;
}
} elseif (preg_match_all("(\[img\]([$URLSearchString]*)\[\/img\])ism", $body, $pictures, PREG_SET_ORDER)) {
if ((count($pictures) == 1) && !$has_title) {
$post["type"] = "photo";
$post["image"] = $pictures[0][1];
$post["text"] = str_replace($pictures[0][0], "", $body);
} elseif (count($pictures) > 0) {
$post["type"] = "link";
$post["url"] = $plink;
$post["image"] = $pictures[0][1];
$post["text"] = $body;
}
}
// Test for the external links
preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links1, PREG_SET_ORDER);
preg_match_all("(\[url\=([$URLSearchString]*)\].*?\[\/url\])ism", $body, $links2, PREG_SET_ORDER);
$links = array_merge($links1, $links2);
// If there is only a single one, then use it.
// This should cover link posts via API.
if ((count($links) == 1) && !isset($post["preview"]) && !$has_title) {
$post["type"] = "link";
$post["text"] = trim($body);
$post["url"] = $links[0][1];
}
// Now count the number of external media links
preg_match_all("(\[vimeo\](.*?)\[\/vimeo\])ism", $body, $links1, PREG_SET_ORDER);
preg_match_all("(\[youtube\\](.*?)\[\/youtube\\])ism", $body, $links2, PREG_SET_ORDER);
preg_match_all("(\[video\\](.*?)\[\/video\\])ism", $body, $links3, PREG_SET_ORDER);
preg_match_all("(\[audio\\](.*?)\[\/audio\\])ism", $body, $links4, PREG_SET_ORDER);
// Add them to the other external links
$links = array_merge($links, $links1, $links2, $links3, $links4);
// Are there more than one?
if (count($links) > 1) {
// The post will be the type "text", which means a blog post
unset($post["type"]);
$post["url"] = $plink;
}
if (!isset($post["type"])) {
$post["type"] = "text";
$post["text"] = trim($body);
}
} elseif (isset($post["url"]) && ($post["type"] == "video")) {
$data = ParseUrl::getSiteinfoCached($post["url"], true);
if (isset($data["images"][0])) {
$post["image"] = $data["images"][0]["src"];
}
}
return $post;
}
/**
* @brief Convert a message into plaintext for connectors to other networks
*
* @param array $b The message array that is about to be posted
* @param int $limit The maximum number of characters when posting to that network
* @param bool $includedlinks Has an attached link to be included into the message?
* @param int $htmlmode This triggers the behaviour of the bbcode conversion
* @param string $target_network Name of the network where the post should go to.
*
* @return string The converted message
*/
public static function toPlaintext($b, $limit = 0, $includedlinks = false, $htmlmode = 2, $target_network = "")
{
// Remove the hash tags
$URLSearchString = "^\[\]";
$body = preg_replace("/([#@])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $b["body"]);
// Add an URL element if the text contains a raw link
$body = preg_replace("/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url]$2[/url]', $body);
// Remove the abstract
$body = self::stripAbstract($body);
// At first look at data that is attached via "type-..." stuff
// This will hopefully replaced with a dedicated bbcode later
//$post = self::getAttachedData($b["body"]);
$post = self::getAttachedData($body, $b);
if (($b["title"] != "") && ($post["text"] != "")) {
$post["text"] = trim($b["title"]."\n\n".$post["text"]);
} elseif ($b["title"] != "") {
$post["text"] = trim($b["title"]);
}
$abstract = "";
// Fetch the abstract from the given target network
if ($target_network != "") {
$default_abstract = self::getAbstract($b["body"]);
$abstract = self::getAbstract($b["body"], $target_network);
// If we post to a network with no limit we only fetch
// an abstract exactly for this network
if (($limit == 0) && ($abstract == $default_abstract)) {
$abstract = "";
}
} else {// Try to guess the correct target network
switch ($htmlmode) {
case 8:
$abstract = self::getAbstract($b["body"], NETWORK_TWITTER);
break;
case 7:
$abstract = self::getAbstract($b["body"], NETWORK_STATUSNET);
break;
case 6:
$abstract = self::getAbstract($b["body"], NETWORK_APPNET);
break;
default: // We don't know the exact target.
// We fetch an abstract since there is a posting limit.
if ($limit > 0) {
$abstract = self::getAbstract($b["body"]);
}
}
}
if ($abstract != "") {
$post["text"] = $abstract;
if ($post["type"] == "text") {
$post["type"] = "link";
$post["url"] = $b["plink"];
}
}
$html = self::convert($post["text"].$post["after"], false, $htmlmode);
$msg = html2plain($html, 0, true);
$msg = trim(html_entity_decode($msg, ENT_QUOTES, 'UTF-8'));
$link = "";
if ($includedlinks) {
if ($post["type"] == "link") {
$link = $post["url"];
} elseif ($post["type"] == "text") {
$link = $post["url"];
} elseif ($post["type"] == "video") {
$link = $post["url"];
} elseif ($post["type"] == "photo") {
$link = $post["image"];
}
if (($msg == "") && isset($post["title"])) {
$msg = trim($post["title"]);
}
if (($msg == "") && isset($post["description"])) {
$msg = trim($post["description"]);
}
// If the link is already contained in the post, then it neeedn't to be added again
// But: if the link is beyond the limit, then it has to be added.
if (($link != "") && strstr($msg, $link)) {
$pos = strpos($msg, $link);
// Will the text be shortened in the link?
// Or is the link the last item in the post?
if (($limit > 0) && ($pos < $limit) && (($pos + 23 > $limit) || ($pos + strlen($link) == strlen($msg)))) {
$msg = trim(str_replace($link, "", $msg));
} elseif (($limit == 0) || ($pos < $limit)) {
// The limit has to be increased since it will be shortened - but not now
// Only do it with Twitter (htmlmode = 8)
if (($limit > 0) && (strlen($link) > 23) && ($htmlmode == 8)) {
$limit = $limit - 23 + strlen($link);
}
$link = "";
if ($post["type"] == "text") {
unset($post["url"]);
}
}
}
}
if ($limit > 0) {
// Reduce multiple spaces
// When posted to a network with limited space, we try to gain space where possible
while (strpos($msg, " ") !== false) {
$msg = str_replace(" ", " ", $msg);
}
// Twitter is using its own limiter, so we always assume that shortened links will have this length
if (iconv_strlen($link, "UTF-8") > 0) {
$limit = $limit - 23;
}
if (iconv_strlen($msg, "UTF-8") > $limit) {
if (($post["type"] == "text") && isset($post["url"])) {
$post["url"] = $b["plink"];
} elseif (!isset($post["url"])) {
$limit = $limit - 23;
$post["url"] = $b["plink"];
// Which purpose has this line? It is now uncommented, but left as a reminder
//} elseif (strpos($b["body"], "[share") !== false) {
// $post["url"] = $b["plink"];
} elseif (PConfig::get($b["uid"], "system", "no_intelligent_shortening")) {
$post["url"] = $b["plink"];
}
$msg = Plaintext::shorten($msg, $limit);
}
}
$post["text"] = trim($msg);
return($post);
}
public static function scaleExternalImages($srctext, $include_link = true, $scale_replace = false)
{
// Suppress "view full size"
if (intval(Config::get('system', 'no_view_full_size'))) {
$include_link = false;
}
// Picture addresses can contain special characters
$s = htmlspecialchars_decode($srctext);
$matches = null;
$c = preg_match_all('/\[img.*?\](.*?)\[\/img\]/ism', $s, $matches, PREG_SET_ORDER);
if ($c) {
foreach ($matches as $mtch) {
logger('scale_external_image: ' . $mtch[1]);
$hostname = str_replace('www.', '', substr(System::baseUrl(), strpos(System::baseUrl(), '://') + 3));
if (stristr($mtch[1], $hostname)) {
continue;
}
// $scale_replace, if passed, is an array of two elements. The
// first is the name of the full-size image. The second is the
// name of a remote, scaled-down version of the full size image.
// This allows Friendica to display the smaller remote image if
// one exists, while still linking to the full-size image
if ($scale_replace) {
$scaled = str_replace($scale_replace[0], $scale_replace[1], $mtch[1]);
} else {
$scaled = $mtch[1];
}
$i = Network::fetchUrl($scaled);
if (!$i) {
return $srctext;
}
// guess mimetype from headers or filename
$type = Image::guessType($mtch[1], true);
if ($i) {
$Image = new Image($i, $type);
if ($Image->isValid()) {
$orig_width = $Image->getWidth();
$orig_height = $Image->getHeight();
if ($orig_width > 640 || $orig_height > 640) {
$Image->scaleDown(640);
$new_width = $Image->getWidth();
$new_height = $Image->getHeight();
logger('scale_external_images: ' . $orig_width . '->' . $new_width . 'w ' . $orig_height . '->' . $new_height . 'h' . ' match: ' . $mtch[0], LOGGER_DEBUG);
$s = str_replace(
$mtch[0],
'[img=' . $new_width . 'x' . $new_height. ']' . $scaled . '[/img]'
. "\n" . (($include_link)
? '[url=' . $mtch[1] . ']' . L10n::t('view full size') . '[/url]' . "\n"
: ''),
$s
);
logger('scale_external_images: new string: ' . $s, LOGGER_DEBUG);
}
}
}
}
}
// replace the special char encoding
$s = htmlspecialchars($s, ENT_NOQUOTES, 'UTF-8');
return $s;
}
/**
* The purpose of this function is to apply system message length limits to
* imported messages without including any embedded photos in the length
*
* @brief Truncates imported message body string length to max_import_size
* @param string $body
* @return string
*/
public static function limitBodySize($body)
{
$maxlen = get_max_import_size();
// If the length of the body, including the embedded images, is smaller
// than the maximum, then don't waste time looking for the images
if ($maxlen && (strlen($body) > $maxlen)) {
logger('the total body length exceeds the limit', LOGGER_DEBUG);
$orig_body = $body;
$new_body = '';
$textlen = 0;
$img_start = strpos($orig_body, '[img');
$img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
$img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
while (($img_st_close !== false) && ($img_end !== false)) {
$img_st_close++; // make it point to AFTER the closing bracket
$img_end += $img_start;
$img_end += strlen('[/img]');
if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
// This is an embedded image
if (($textlen + $img_start) > $maxlen) {
if ($textlen < $maxlen) {
logger('the limit happens before an embedded image', LOGGER_DEBUG);
$new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
$textlen = $maxlen;
}
} else {
$new_body = $new_body . substr($orig_body, 0, $img_start);
$textlen += $img_start;
}
$new_body = $new_body . substr($orig_body, $img_start, $img_end - $img_start);
} else {
if (($textlen + $img_end) > $maxlen) {
if ($textlen < $maxlen) {
logger('the limit happens before the end of a non-embedded image', LOGGER_DEBUG);
$new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
$textlen = $maxlen;
}
} else {
$new_body = $new_body . substr($orig_body, 0, $img_end);
$textlen += $img_end;
}
}
$orig_body = substr($orig_body, $img_end);
if ($orig_body === false) {
// in case the body ends on a closing image tag
$orig_body = '';
}
$img_start = strpos($orig_body, '[img');
$img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
$img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
}
if (($textlen + strlen($orig_body)) > $maxlen) {
if ($textlen < $maxlen) {
logger('the limit happens after the end of the last image', LOGGER_DEBUG);
$new_body = $new_body . substr($orig_body, 0, $maxlen - $textlen);
}
} else {
logger('the text size with embedded images extracted did not violate the limit', LOGGER_DEBUG);
$new_body = $new_body . $orig_body;
}
return $new_body;
} else {
return $body;
}
}
/**
* Processes [attachment] tags
*
* Note: Can produce a [bookmark] tag in the returned string
*
* @brief Processes [attachment] tags
* @param string $return
* @param bool|int $simplehtml
* @param bool $tryoembed
* @return string
*/
private static function convertAttachment($return, $simplehtml = false, $tryoembed = true)
{
$data = self::getAttachmentData($return);
if (!$data) {
return $return;
}
if (isset($data["title"])) {
$data["title"] = strip_tags($data["title"]);
$data["title"] = str_replace(["http://", "https://"], "", $data["title"]);
}
if (((strpos($data["text"], "[img=") !== false) || (strpos($data["text"], "[img]") !== false) || Config::get('system', 'always_show_preview')) && ($data["image"] != "")) {
$data["preview"] = $data["image"];
$data["image"] = "";
}
$return = '';
if ($simplehtml == 7) {
$return = self::convertUrlForMastodon($data["url"]);
} elseif (($simplehtml != 4) && ($simplehtml != 0)) {
$return = sprintf('<a href="%s" target="_blank">%s</a><br>', $data["url"], $data["title"]);
} else {
try {
if ($tryoembed && OEmbed::isAllowedURL($data['url'])) {
$return = OEmbed::getHTML($data['url'], $data['title']);
} else {
throw new Exception('OEmbed is disabled for this attachment.');
}
} catch (Exception $e) {
if ($simplehtml != 4) {
$return = sprintf('<div class="type-%s">', $data["type"]);
}
if ($data["image"] != "") {
$return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a><br />', $data["url"], proxy_url($data["image"]), $data["title"]);
} elseif ($data["preview"] != "") {
$return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-preview" /></a><br />', $data["url"], proxy_url($data["preview"]), $data["title"]);
}
if (($data["type"] == "photo") && ($data["url"] != "") && ($data["image"] != "")) {
$return .= sprintf('<a href="%s" target="_blank"><img src="%s" alt="" title="%s" class="attachment-image" /></a>', $data["url"], proxy_url($data["image"]), $data["title"]);
} else {
$return .= sprintf('<h4><a href="%s">%s</a></h4>', $data['url'], $data['title']);
}
if ($data["description"] != "" && $data["description"] != $data["title"]) {
$return .= sprintf('<blockquote>%s</blockquote>', trim(self::convert($data["description"])));
}
if ($data["type"] == "link") {
$return .= sprintf('<sup><a href="%s">%s</a></sup>', $data['url'], parse_url($data['url'], PHP_URL_HOST));
}
if ($simplehtml != 4) {
$return .= '</div>';
}
}
}
return trim($data["text"] . ' ' . $return . ' ' . $data["after"]);
}
public static function removeShareInformation($Text, $plaintext = false, $nolink = false)
{
$data = self::getAttachmentData($Text);
if (!$data) {
return $Text;
} elseif ($nolink) {
return $data["text"] . $data["after"];
}
$title = htmlentities($data["title"], ENT_QUOTES, 'UTF-8', false);
$text = htmlentities($data["text"], ENT_QUOTES, 'UTF-8', false);
if ($plaintext || (($title != "") && strstr($text, $title))) {
$data["title"] = $data["url"];
} elseif (($text != "") && strstr($title, $text)) {
$data["text"] = $data["title"];
$data["title"] = $data["url"];
}
if (($data["text"] == "") && ($data["title"] != "") && ($data["url"] == "")) {
return $data["title"] . $data["after"];
}
// If the link already is included in the post, don't add it again
if (($data["url"] != "") && strpos($data["text"], $data["url"])) {
return $data["text"] . $data["after"];
}
$text = $data["text"];
if (($data["url"] != "") && ($data["title"] != "")) {
$text .= "\n[url=" . $data["url"] . "]" . $data["title"] . "[/url]";
} elseif (($data["url"] != "")) {
$text .= "\n" . $data["url"];
}
return $text . "\n" . $data["after"];
}
private static function cleanCss($input)
{
$cleaned = "";
$input = strtolower($input);
for ($i = 0; $i < strlen($input); $i++) {
$char = substr($input, $i, 1);
if (($char >= "a") && ($char <= "z")) {
$cleaned .= $char;
}
if (!(strpos(" #;:0123456789-_.%", $char) === false)) {
$cleaned .= $char;
}
}
return $cleaned;
}
/**
* Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
*
* @brief Converts [url] BBCodes in a format that looks fine on Mastodon. (callback function)
* @param array $match Array with the matching values
* @return string reformatted link including HTML codes
*/
private static function convertUrlForMastodonCallback($match)
{
$url = $match[1];
if (isset($match[2]) && ($match[1] != $match[2])) {
return $match[0];
}
$parts = parse_url($url);
if (!isset($parts['scheme'])) {
return $match[0];
}
return self::convertUrlForMastodon($url);
}
/**
* @brief Converts [url] BBCodes in a format that looks fine on Mastodon and GNU Social.
* @param string $url URL that is about to be reformatted
* @return string reformatted link including HTML codes
*/
private static function convertUrlForMastodon($url)
{
$parts = parse_url($url);
$scheme = $parts['scheme'] . '://';
$styled_url = str_replace($scheme, '', $url);
$html = '<a href="%s" class="attachment" rel="nofollow noopener" target="_blank">' .
'<span class="invisible">%s</span>';
if (strlen($styled_url) > 30) {
$html .= '<span class="ellipsis">%s</span>' .
'<span class="invisible">%s</span></a>';
$ellipsis = substr($styled_url, 0, 30);
$rest = substr($styled_url, 30);
return sprintf($html, $url, $scheme, $ellipsis, $rest);
} else {
$html .= '%s</a>';
return sprintf($html, $url, $scheme, $styled_url);
}
}
/*
* [noparse][i]italic[/i][/noparse] turns into
* [noparse][ i ]italic[ /i ][/noparse],
* to hide them from parser.
*/
private static function escapeNoparseCallback($match)
{
$whole_match = $match[0];
$captured = $match[1];
$spacefied = preg_replace("/\[(.*?)\]/", "[ $1 ]", $captured);
$new_str = str_replace($captured, $spacefied, $whole_match);
return $new_str;
}
/*
* The previously spacefied [noparse][ i ]italic[ /i ][/noparse],
* now turns back and the [noparse] tags are trimed
* returning [i]italic[/i]
*/
private static function unescapeNoparseCallback($match)
{
$captured = $match[1];
$unspacefied = preg_replace("/\[ (.*?)\ ]/", "[$1]", $captured);
return $unspacefied;
}
/**
* Returns the bracket character positions of a set of opening and closing BBCode tags, optionally skipping first
* occurrences
*
* @param string $text Text to search
* @param string $name Tag name
* @param int $occurrences Number of first occurrences to skip
* @return boolean|array
*/
public static function getTagPosition($text, $name, $occurrences = 0)
{
if ($occurrences < 0) {
$occurrences = 0;
}
$start_open = -1;
for ($i = 0; $i <= $occurrences; $i++) {
if ($start_open !== false) {
$start_open = strpos($text, '[' . $name, $start_open + 1); // allow [name= type tags
}
}
if ($start_open === false) {
return false;
}
$start_equal = strpos($text, '=', $start_open);
$start_close = strpos($text, ']', $start_open);
if ($start_close === false) {
return false;
}
$start_close++;
$end_open = strpos($text, '[/' . $name . ']', $start_close);
if ($end_open === false) {
return false;
}
$res = [
'start' => [
'open' => $start_open,
'close' => $start_close
],
'end' => [
'open' => $end_open,
'close' => $end_open + strlen('[/' . $name . ']')
],
];
if ($start_equal !== false) {
$res['start']['equal'] = $start_equal + 1;
}
return $res;
}
/**
* Performs a preg_replace within the boundaries of all named BBCode tags in a text
*
* @param type $pattern Preg pattern string
* @param type $replace Preg replace string
* @param type $name BBCode tag name
* @param type $text Text to search
* @return string
*/
public static function pregReplaceInTag($pattern, $replace, $name, $text)
{
$occurrences = 0;
$pos = self::getTagPosition($text, $name, $occurrences);
while ($pos !== false && $occurrences++ < 1000) {
$start = substr($text, 0, $pos['start']['open']);
$subject = substr($text, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
$end = substr($text, $pos['end']['close']);
if ($end === false) {
$end = '';
}
$subject = preg_replace($pattern, $replace, $subject);
$text = $start . $subject . $end;
$pos = self::getTagPosition($text, $name, $occurrences);
}
return $text;
}
private static function extractImagesFromItemBody($body)
{
$saved_image = [];
$orig_body = $body;
$new_body = '';
$cnt = 0;
$img_start = strpos($orig_body, '[img');
$img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
$img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
while (($img_st_close !== false) && ($img_end !== false)) {
$img_st_close++; // make it point to AFTER the closing bracket
$img_end += $img_start;
if (!strcmp(substr($orig_body, $img_start + $img_st_close, 5), 'data:')) {
// This is an embedded image
$saved_image[$cnt] = substr($orig_body, $img_start + $img_st_close, $img_end - ($img_start + $img_st_close));
$new_body = $new_body . substr($orig_body, 0, $img_start) . '[$#saved_image' . $cnt . '#$]';
$cnt++;
} else {
$new_body = $new_body . substr($orig_body, 0, $img_end + strlen('[/img]'));
}
$orig_body = substr($orig_body, $img_end + strlen('[/img]'));
if ($orig_body === false) {
// in case the body ends on a closing image tag
$orig_body = '';
}
$img_start = strpos($orig_body, '[img');
$img_st_close = ($img_start !== false ? strpos(substr($orig_body, $img_start), ']') : false);
$img_end = ($img_start !== false ? strpos(substr($orig_body, $img_start), '[/img]') : false);
}
$new_body = $new_body . $orig_body;
return ['body' => $new_body, 'images' => $saved_image];
}
private static function interpolateSavedImagesIntoItemBody($body, array $images)
{
$newbody = $body;
$cnt = 0;
foreach ($images as $image) {
// We're depending on the property of 'foreach' (specified on the PHP website) that
// it loops over the array starting from the first element and going sequentially
// to the last element
$newbody = str_replace('[$#saved_image' . $cnt . '#$]',
'<img src="' . proxy_url($image) . '" alt="' . L10n::t('Image/photo') . '" />', $newbody);
$cnt++;
}
return $newbody;
}
/**
* Processes [share] tags
*
* Note: Can produce a [bookmark] tag in the output
*
* @brief Processes [share] tags
* @param array $share preg_match_callback result array
* @param bool|int $simplehtml
* @return string
*/
private static function convertShare($share, $simplehtml)
{
$attributes = $share[2];
$author = "";
preg_match("/author='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$author = html_entity_decode($matches[1], ENT_QUOTES, 'UTF-8');
}
preg_match('/author="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$author = $matches[1];
}
$profile = "";
preg_match("/profile='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$profile = $matches[1];
}
preg_match('/profile="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$profile = $matches[1];
}
$avatar = "";
preg_match("/avatar='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$avatar = $matches[1];
}
preg_match('/avatar="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$avatar = $matches[1];
}
$link = "";
preg_match("/link='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$link = $matches[1];
}
preg_match('/link="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$link = $matches[1];
}
$posted = "";
preg_match("/posted='(.*?)'/ism", $attributes, $matches);
if (x($matches, 1)) {
$posted = $matches[1];
}
preg_match('/posted="(.*?)"/ism', $attributes, $matches);
if (x($matches, 1)) {
$posted = $matches[1];
}
// We only call this so that a previously unknown contact can be added.
// This is important for the function "Model\Contact::getDetailsByURL()".
// This function then can fetch an entry from the contact table.
Contact::getIdForURL($profile, 0, true);
$data = Contact::getDetailsByURL($profile);
if (x($data, "name") && x($data, "addr")) {
$userid_compact = $data["name"] . " (" . $data["addr"] . ")";
} else {
$userid_compact = Protocol::getAddrFromProfileUrl($profile, $author);
}
if (x($data, "addr")) {
$userid = $data["addr"];
} else {
$userid = Protocol::formatMention($profile, $author);
}
if (x($data, "name")) {
$author = $data["name"];
}
if (x($data, "micro")) {
$avatar = $data["micro"];
}
$preshare = trim($share[1]);
if ($preshare != "") {
$preshare .= "<br />";
}
switch ($simplehtml) {
case 1:
$text = $preshare . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . ' <a href="' . $profile . '">' . $userid . "</a>: <br />»" . $share[3] . "«";
break;
case 2:
$text = $preshare . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . ' ' . $userid_compact . ": <br />" . $share[3];
break;
case 3: // Diaspora
$headline = '<b>' . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . $userid . ':</b><br />';
$text = trim($share[1]);
if ($text != "") {
$text .= "<hr />";
}
if (stripos(normalise_link($link), 'http://twitter.com/') === 0) {
$text .= $headline . '<blockquote>' . trim($share[3]) . "</blockquote><br />";
if ($link != "") {
$text .= '<br /><a href="' . $link . '">[l]</a>';
}
} else {
$text .= '<br /><a href="' . $link . '">' . $link . '</a>';
}
break;
case 4:
$headline = '<br /><b>' . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
$headline .= L10n::t('<a href="%1$s" target="_blank">%2$s</a> %3$s', $link, $userid, $posted);
$headline .= ":</b><br />";
$text = trim($share[1]);
if ($text != "") {
$text .= "<hr />";
}
$text .= $headline . '<blockquote class="shared_content">' . trim($share[3]) . "</blockquote><br />";
break;
case 5:
$text = $preshare . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . ' ' . $userid_compact . ": <br />" . $share[3];
break;
case 6: // app.net
$text = $preshare . "&gt;&gt; @" . $userid_compact . ": <br />" . $share[3];
break;
case 7: // statusnet/GNU Social
$text = $preshare . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . " @" . $userid_compact . ": " . $share[3];
break;
case 8: // twitter
$text = $preshare . "RT @" . $userid_compact . ": " . $share[3];
break;
case 9: // Google+/Facebook
$text = $preshare . html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8') . ' ' . $userid_compact . ": <br />" . $share[3];
if ($link != "") {
$text .= "<br /><br />" . $link;
}
break;
default:
// Transforms quoted tweets in rich attachments to avoid nested tweets
if (stripos(normalise_link($link), 'http://twitter.com/') === 0 && OEmbed::isAllowedURL($link)) {
try {
$oembed = OEmbed::getHTML($link, $preshare);
} catch (Exception $e) {
$oembed = sprintf('[bookmark=%s]%s[/bookmark]', $link, $preshare);
}
$text = $preshare . $oembed;
} else {
$text = trim($share[1]) . "\n";
$avatar = proxy_url($avatar, false, PROXY_SIZE_THUMB);
$tpl = get_markup_template('shared_content.tpl');
$text .= replace_macros($tpl, [
'$profile' => $profile,
'$avatar' => $avatar,
'$author' => $author,
'$link' => $link,
'$posted' => $posted,
'$content' => trim($share[3])
]);
}
break;
}
return $text;
}
private static function removePictureLinksCallback($match)
{
$text = Cache::get($match[1]);
if (is_null($text)) {
$a = self::getApp();
$stamp1 = microtime(true);
$ch = @curl_init($match[1]);
@curl_setopt($ch, CURLOPT_NOBODY, true);
@curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
@curl_exec($ch);
$curl_info = @curl_getinfo($ch);
$a->save_timestamp($stamp1, "network");
if (substr($curl_info["content_type"], 0, 6) == "image/") {
$text = "[url=" . $match[1] . "]" . $match[1] . "[/url]";
} else {
$text = "[url=" . $match[2] . "]" . $match[2] . "[/url]";
// if its not a picture then look if its a page that contains a picture link
$body = Network::fetchUrl($match[1]);
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xpath = new DomXPath($doc);
$list = $xpath->query("//meta[@name]");
foreach ($list as $node) {
$attr = [];
if ($node->attributes->length) {
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
}
if (strtolower($attr["name"]) == "twitter:image") {
$text = "[url=" . $attr["content"] . "]" . $attr["content"] . "[/url]";
}
}
}
Cache::set($match[1], $text);
}
return $text;
}
private static function expandLinksCallback($match)
{
if (($match[3] == "") || ($match[2] == $match[3]) || stristr($match[2], $match[3])) {
return ($match[1] . "[url]" . $match[2] . "[/url]");
} else {
return ($match[1] . $match[3] . " [url]" . $match[2] . "[/url]");
}
}
private static function cleanPictureLinksCallback($match)
{
$text = Cache::get($match[1]);
if (is_null($text)) {
$a = self::getApp();
$stamp1 = microtime(true);
$ch = @curl_init($match[1]);
@curl_setopt($ch, CURLOPT_NOBODY, true);
@curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@curl_setopt($ch, CURLOPT_USERAGENT, $a->get_useragent());
@curl_exec($ch);
$curl_info = @curl_getinfo($ch);
$a->save_timestamp($stamp1, "network");
// if its a link to a picture then embed this picture
if (substr($curl_info["content_type"], 0, 6) == "image/") {
$text = "[img]" . $match[1] . "[/img]";
} else {
$text = "[img]" . $match[2] . "[/img]";
// if its not a picture then look if its a page that contains a picture link
$body = Network::fetchUrl($match[1]);
$doc = new DOMDocument();
@$doc->loadHTML($body);
$xpath = new DOMXPath($doc);
$list = $xpath->query("//meta[@name]");
foreach ($list as $node) {
$attr = [];
if ($node->attributes->length) {
foreach ($node->attributes as $attribute) {
$attr[$attribute->name] = $attribute->value;
}
}
if (strtolower($attr["name"]) == "twitter:image") {
$text = "[img]" . $attr["content"] . "[/img]";
}
}
}
Cache::set($match[1], $text);
}
return $text;
}
public static function cleanPictureLinks($text)
{
$return = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::cleanPictureLinksCallback', $text);
return $return;
}
private static function textHighlightCallback($match)
{
if (in_array(strtolower($match[1]),
['php', 'css', 'mysql', 'sql', 'abap', 'diff', 'html', 'perl', 'ruby',
'vbscript', 'avrc', 'dtd', 'java', 'xml', 'cpp', 'python', 'javascript', 'js', 'sh'])
) {
return text_highlight($match[2], strtolower($match[1]));
}
return $match[0];
}
/**
* @brief Converts a BBCode message to HTML message
*
* BBcode 2 HTML was written by WAY2WEB.net
* extended to work with Mistpark/Friendica - Mike Macgirvin
*
* Simple HTML values meaning:
* - 0: Friendica display
* - 1: Unused
* - 2: Used for Facebook, Google+, Windows Phone push, Friendica API
* - 3: Used before converting to Markdown in bb2diaspora.php
* - 4: Used for WordPress, Libertree (before Markdown), pump.io and tumblr
* - 5: Unused
* - 6: Used for Appnet
* - 7: Used for dfrn, OStatus
* - 8: Used for WP backlink text setting
*
* @param string $text
* @param bool $try_oembed
* @param int $simple_html
* @param bool $for_plaintext
* @return string
*/
public static function convert($text, $try_oembed = true, $simple_html = false, $for_plaintext = false)
{
$a = self::getApp();
/*
* preg_match_callback function to replace potential Oembed tags with Oembed content
*
* $match[0] = [tag]$url[/tag] or [tag=$url]$title[/tag]
* $match[1] = $url
* $match[2] = $title or absent
*/
$try_oembed_callback = function ($match)
{
$url = $match[1];
$title = defaults($match, 2, null);
try {
$return = OEmbed::getHTML($url, $title);
} catch (Exception $ex) {
$return = $match[0];
}
return $return;
};
// Hide all [noparse] contained bbtags by spacefying them
// POSSIBLE BUG --> Will the 'preg' functions crash if there's an embedded image?
$text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::escapeNoparseCallback', $text);
$text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::escapeNoparseCallback', $text);
$text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::escapeNoparseCallback', $text);
// Remove the abstract element. It is a non visible element.
$text = self::stripAbstract($text);
// Move all spaces out of the tags
$text = preg_replace("/\[(\w*)\](\s*)/ism", '$2[$1]', $text);
$text = preg_replace("/(\s*)\[\/(\w*)\]/ism", '[/$2]$1', $text);
// Extract the private images which use data urls since preg has issues with
// large data sizes. Stash them away while we do bbcode conversion, and then put them back
// in after we've done all the regex matching. We cannot use any preg functions to do this.
$extracted = self::extractImagesFromItemBody($text);
$text = $extracted['body'];
$saved_image = $extracted['images'];
// If we find any event code, turn it into an event.
// After we're finished processing the bbcode we'll
// replace all of the event code with a reformatted version.
$ev = bbtoevent($text);
// Replace any html brackets with HTML Entities to prevent executing HTML or script
// Don't use strip_tags here because it breaks [url] search by replacing & with amp
$text = str_replace("<", "&lt;", $text);
$text = str_replace(">", "&gt;", $text);
// remove some newlines before the general conversion
$text = preg_replace("/\s?\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "[share$1]$2[/share]", $text);
$text = preg_replace("/\s?\[quote(.*?)\]\s?(.*?)\s?\[\/quote\]\s?/ism", "[quote$1]$2[/quote]", $text);
$text = preg_replace("/\n\[code\]/ism", "[code]", $text);
$text = preg_replace("/\[\/code\]\n/ism", "[/code]", $text);
// when the content is meant exporting to other systems then remove the avatar picture since this doesn't really look good on these systems
if (!$try_oembed) {
$text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism", "\n[share$1$2]$3[/share]", $text);
}
// Check for [code] text here, before the linefeeds are messed with.
// The highlighter will unescape and re-escape the content.
if (strpos($text, '[code=') !== false) {
$text = preg_replace_callback("/\[code=(.*?)\](.*?)\[\/code\]/ism", 'self::textHighlightCallback', $text);
}
// Convert new line chars to html <br /> tags
// nlbr seems to be hopelessly messed up
// $Text = nl2br($Text);
// We'll emulate it.
$text = trim($text);
$text = str_replace("\r\n", "\n", $text);
// removing multiplicated newlines
if (Config::get("system", "remove_multiplicated_lines")) {
$search = ["\n\n\n", "\n ", " \n", "[/quote]\n\n", "\n[/quote]", "[/li]\n", "\n[li]", "\n[ul]", "[/ul]\n", "\n\n[share ", "[/attachment]\n",
"\n[h1]", "[/h1]\n", "\n[h2]", "[/h2]\n", "\n[h3]", "[/h3]\n", "\n[h4]", "[/h4]\n", "\n[h5]", "[/h5]\n", "\n[h6]", "[/h6]\n"];
$replace = ["\n\n", "\n", "\n", "[/quote]\n", "[/quote]", "[/li]", "[li]", "[ul]", "[/ul]", "\n[share ", "[/attachment]",
"[h1]", "[/h1]", "[h2]", "[/h2]", "[h3]", "[/h3]", "[h4]", "[/h4]", "[h5]", "[/h5]", "[h6]", "[/h6]"];
do {
$oldtext = $text;
$text = str_replace($search, $replace, $text);
} while ($oldtext != $text);
}
// Set up the parameters for a URL search string
$URLSearchString = "^\[\]";
// Set up the parameters for a MAIL search string
$MAILSearchString = $URLSearchString;
// if the HTML is used to generate plain text, then don't do this search, but replace all URL of that kind to text
if (!$for_plaintext) {
// Autolink feature (thanks to http://code.seebz.net/p/autolink-php/)
// Currently disabled, since the function is too greedy
// $autolink_regex = "`([^\]\=\"']|^)(https?\://[^\s<]+[^\s<\.\)])`ism";
$autolink_regex = "/([^\]\='".'"'."]|^)(https?\:\/\/[a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism";
$text = preg_replace($autolink_regex, '$1[url]$2[/url]', $text);
if ($simple_html == 7) {
$text = preg_replace_callback("/\[url\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForMastodonCallback', $text);
$text = preg_replace_callback("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", 'self::convertUrlForMastodonCallback', $text);
}
} else {
$text = preg_replace("(\[url\]([$URLSearchString]*)\[\/url\])ism", " $1 ", $text);
$text = preg_replace_callback("&\[url=([^\[\]]*)\]\[img\](.*)\[\/img\]\[\/url\]&Usi", 'self::removePictureLinksCallback', $text);
}
// Handle attached links or videos
$text = self::convertAttachment($text, $simple_html, $try_oembed);
$text = str_replace(["\r","\n"], ['<br />', '<br />'], $text);
// Remove all hashtag addresses
if ((!$try_oembed || $simple_html) && !in_array($simple_html, [3, 7])) {
$text = preg_replace("/([#@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '$1$3', $text);
} elseif ($simple_html == 3) {
// The ! is converted to @ since Diaspora only understands the @
$text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
'@<a href="$2">$3</a>',
$text);
} elseif ($simple_html == 7) {
$text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
'$1<span class="vcard"><a href="$2" class="url" title="$3"><span class="fn nickname mention">$3</span></a></span>',
$text);
} elseif (!$simple_html) {
$text = preg_replace("/([@!])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
'$1<a href="$2" class="userinfo mention" title="$3">$3</a>',
$text);
}
// Bookmarks in red - will be converted to bookmarks in friendica
$text = preg_replace("/#\^\[url\]([$URLSearchString]*)\[\/url\]/ism", '[bookmark=$1]$1[/bookmark]', $text);
$text = preg_replace("/#\^\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[bookmark=$1]$2[/bookmark]', $text);
$text = preg_replace("/#\[url\=[$URLSearchString]*\]\^\[\/url\]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/i",
"[bookmark=$1]$2[/bookmark]", $text);
if (in_array($simple_html, [2, 6, 7, 8, 9])) {
$text = preg_replace_callback("/([^#@!])\[url\=([^\]]*)\](.*?)\[\/url\]/ism", "self::expandLinksCallback", $text);
//$Text = preg_replace("/[^#@!]\[url\=([^\]]*)\](.*?)\[\/url\]/ism", ' $2 [url]$1[/url]', $Text);
$text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", ' $2 [url]$1[/url]',$text);
}
if ($simple_html == 5) {
$text = preg_replace("/[^#@!]\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '[url]$1[/url]', $text);
}
// Perform URL Search
if ($try_oembed) {
$text = preg_replace_callback("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", $try_oembed_callback, $text);
}
if ($simple_html == 5) {
$text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url]$1[/url]', $text);
} else {
$text = preg_replace("/\[bookmark\=([^\]]*)\](.*?)\[\/bookmark\]/ism", '[url=$1]$2[/url]', $text);
}
// Handle Diaspora posts
$text = preg_replace_callback(
"&\[url=/posts/([^\[\]]*)\](.*)\[\/url\]&Usi",
function ($match) {
return "[url=" . System::baseUrl() . "/display/" . $match[1] . "]" . $match[2] . "[/url]";
}, $text
);
// Server independent link to posts and comments
// See issue: https://github.com/diaspora/diaspora_federation/issues/75
$expression = "=diaspora://.*?/post/([0-9A-Za-z\-_@.:]{15,254}[0-9A-Za-z])=ism";
$text = preg_replace($expression, System::baseUrl()."/display/$1", $text);
$text = preg_replace("/([#])\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism",
'$1<a href="' . System::baseUrl() . '/search?tag=$3" class="tag" title="$3">$3</a>', $text);
$text = preg_replace("/\[url\=([$URLSearchString]*)\]#(.*?)\[\/url\]/ism",
'#<a href="' . System::baseUrl() . '/search?tag=$2" class="tag" title="$2">$2</a>', $text);
$text = preg_replace("/\[url\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$1</a>', $text);
$text = preg_replace("/\[url\=([$URLSearchString]*)\](.*?)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
//$Text = preg_replace("/\[url\=([$URLSearchString]*)\]([$URLSearchString]*)\[\/url\]/ism", '<a href="$1" target="_blank">$2</a>', $Text);
// Red compatibility, though the link can't be authenticated on Friendica
$text = preg_replace("/\[zrl\=([$URLSearchString]*)\](.*?)\[\/zrl\]/ism", '<a href="$1" target="_blank">$2</a>', $text);
// we may need to restrict this further if it picks up too many strays
// link acct:user@host to a webfinger profile redirector
$text = preg_replace('/acct:([^@]+)@((?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63})/', '<a href="' . System::baseUrl() . '/acctlink?addr=$1@$2" target="extlink">acct:$1@$2</a>', $text);
// Perform MAIL Search
$text = preg_replace("/\[mail\]([$MAILSearchString]*)\[\/mail\]/", '<a href="mailto:$1">$1</a>', $text);
$text = preg_replace("/\[mail\=([$MAILSearchString]*)\](.*?)\[\/mail\]/", '<a href="mailto:$1">$2</a>', $text);
// leave open the posibility of [map=something]
// this is replaced in prepare_body() which has knowledge of the item location
if (strpos($text, '[/map]') !== false) {
$text = preg_replace_callback(
"/\[map\](.*?)\[\/map\]/ism",
function ($match) {
// the extra space in the following line is intentional
// Whyyy? - @MrPetovan
return str_replace($match[0], '<div class="map" >' . Map::byLocation($match[1]) . '</div>', $match[0]);
},
$text
);
}
if (strpos($text, '[map=') !== false) {
$text = preg_replace_callback(
"/\[map=(.*?)\]/ism",
function ($match) {
// the extra space in the following line is intentional
// Whyyy? - @MrPetovan
return str_replace($match[0], '<div class="map" >' . Map::byCoordinates(str_replace('/', ' ', $match[1])) . '</div>', $match[0]);
},
$text
);
}
if (strpos($text, '[map]') !== false) {
$text = preg_replace("/\[map\]/", '<div class="map"></div>', $text);
}
// Check for headers
$text = preg_replace("(\[h1\](.*?)\[\/h1\])ism", '<h1>$1</h1>', $text);
$text = preg_replace("(\[h2\](.*?)\[\/h2\])ism", '<h2>$1</h2>', $text);
$text = preg_replace("(\[h3\](.*?)\[\/h3\])ism", '<h3>$1</h3>', $text);
$text = preg_replace("(\[h4\](.*?)\[\/h4\])ism", '<h4>$1</h4>', $text);
$text = preg_replace("(\[h5\](.*?)\[\/h5\])ism", '<h5>$1</h5>', $text);
$text = preg_replace("(\[h6\](.*?)\[\/h6\])ism", '<h6>$1</h6>', $text);
// Check for paragraph
$text = preg_replace("(\[p\](.*?)\[\/p\])ism", '<p>$1</p>', $text);
// Check for bold text
$text = preg_replace("(\[b\](.*?)\[\/b\])ism", '<strong>$1</strong>', $text);
// Check for Italics text
$text = preg_replace("(\[i\](.*?)\[\/i\])ism", '<em>$1</em>', $text);
// Check for Underline text
$text = preg_replace("(\[u\](.*?)\[\/u\])ism", '<u>$1</u>', $text);
// Check for strike-through text
$text = preg_replace("(\[s\](.*?)\[\/s\])ism", '<strike>$1</strike>', $text);
// Check for over-line text
$text = preg_replace("(\[o\](.*?)\[\/o\])ism", '<span class="overline">$1</span>', $text);
// Check for colored text
$text = preg_replace("(\[color=(.*?)\](.*?)\[\/color\])ism", "<span style=\"color: $1;\">$2</span>", $text);
// Check for sized text
// [size=50] --> font-size: 50px (with the unit).
$text = preg_replace("(\[size=(\d*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1px; line-height: initial;\">$2</span>", $text);
$text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])ism", "<span style=\"font-size: $1; line-height: initial;\">$2</span>", $text);
// Check for centered text
$text = preg_replace("(\[center\](.*?)\[\/center\])ism", "<div style=\"text-align:center;\">$1</div>", $text);
// Check for list text
$text = str_replace("[*]", "<li>", $text);
// Check for style sheet commands
$text = preg_replace_callback(
"(\[style=(.*?)\](.*?)\[\/style\])ism",
function ($match) {
return "<span style=\"" . self::cleanCss($match[1]) . ";\">" . $match[2] . "</span>";
},
$text
);
// Check for CSS classes
$text = preg_replace_callback(
"(\[class=(.*?)\](.*?)\[\/class\])ism",
function ($match) {
return "<span class=\"" . self::cleanCss($match[1]) . "\">" . $match[2] . "</span>";
},
$text
);
// handle nested lists
$endlessloop = 0;
while ((((strpos($text, "[/list]") !== false) && (strpos($text, "[list") !== false)) ||
((strpos($text, "[/ol]") !== false) && (strpos($text, "[ol]") !== false)) ||
((strpos($text, "[/ul]") !== false) && (strpos($text, "[ul]") !== false)) ||
((strpos($text, "[/li]") !== false) && (strpos($text, "[li]") !== false))) && (++$endlessloop < 20)) {
$text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
$text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>', $text);
$text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
$text = preg_replace("/\[list=((?-i)i)\](.*?)\[\/list\]/ism", '<ul class="listlowerroman" style="list-style-type: lower-roman;">$2</ul>', $text);
$text = preg_replace("/\[list=((?-i)I)\](.*?)\[\/list\]/ism", '<ul class="listupperroman" style="list-style-type: upper-roman;">$2</ul>', $text);
$text = preg_replace("/\[list=((?-i)a)\](.*?)\[\/list\]/ism", '<ul class="listloweralpha" style="list-style-type: lower-alpha;">$2</ul>', $text);
$text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>', $text);
$text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>', $text);
$text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>', $text);
$text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>', $text);
}
$text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>', $text);
$text = preg_replace("/\[td\](.*?)\[\/td\]/sm", '<td>$1</td>', $text);
$text = preg_replace("/\[tr\](.*?)\[\/tr\]/sm", '<tr>$1</tr>', $text);
$text = preg_replace("/\[table\](.*?)\[\/table\]/sm", '<table>$1</table>', $text);
$text = preg_replace("/\[table border=1\](.*?)\[\/table\]/sm", '<table border="1" >$1</table>', $text);
$text = preg_replace("/\[table border=0\](.*?)\[\/table\]/sm", '<table border="0" >$1</table>', $text);
$text = str_replace('[hr]', '<hr />', $text);
// This is actually executed in prepare_body()
$text = str_replace('[nosmile]', '', $text);
// Check for font change text
$text = preg_replace("/\[font=(.*?)\](.*?)\[\/font\]/sm", "<span style=\"font-family: $1;\">$2</span>", $text);
// Declare the format for [code] layout
$CodeLayout = '<code>$1</code>';
// Check for [code] text
$text = preg_replace("/\[code\](.*?)\[\/code\]/ism", "$CodeLayout", $text);
// Declare the format for [spoiler] layout
$SpoilerLayout = '<blockquote class="spoiler">$1</blockquote>';
// Check for [spoiler] text
// handle nested quotes
$endlessloop = 0;
while ((strpos($text, "[/spoiler]") !== false) && (strpos($text, "[spoiler]") !== false) && (++$endlessloop < 20)) {
$text = preg_replace("/\[spoiler\](.*?)\[\/spoiler\]/ism", "$SpoilerLayout", $text);
}
// Check for [spoiler=Author] text
$t_wrote = L10n::t('$1 wrote:');
// handle nested quotes
$endlessloop = 0;
while ((strpos($text, "[/spoiler]")!== false) && (strpos($text, "[spoiler=") !== false) && (++$endlessloop < 20)) {
$text = preg_replace("/\[spoiler=[\"\']*(.*?)[\"\']*\](.*?)\[\/spoiler\]/ism",
"<br /><strong class=".'"spoiler"'.">" . $t_wrote . "</strong><blockquote class=".'"spoiler"'.">$2</blockquote>",
$text);
}
// Declare the format for [quote] layout
$QuoteLayout = '<blockquote>$1</blockquote>';
// Check for [quote] text
// handle nested quotes
$endlessloop = 0;
while ((strpos($text, "[/quote]") !== false) && (strpos($text, "[quote]") !== false) && (++$endlessloop < 20)) {
$text = preg_replace("/\[quote\](.*?)\[\/quote\]/ism", "$QuoteLayout", $text);
}
// Check for [quote=Author] text
$t_wrote = L10n::t('$1 wrote:');
// handle nested quotes
$endlessloop = 0;
while ((strpos($text, "[/quote]")!== false) && (strpos($text, "[quote=") !== false) && (++$endlessloop < 20)) {
$text = preg_replace("/\[quote=[\"\']*(.*?)[\"\']*\](.*?)\[\/quote\]/ism",
"<p><strong class=".'"author"'.">" . $t_wrote . "</strong></p><blockquote>$2</blockquote>",
$text);
}
// [img=widthxheight]image source[/img]
$text = preg_replace_callback(
"/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism",
function ($matches) {
if (strpos($matches[3], "data:image/") === 0) {
return $matches[0];
}
$matches[3] = proxy_url($matches[3]);
return "[img=" . $matches[1] . "x" . $matches[2] . "]" . $matches[3] . "[/img]";
},
$text
);
$text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '<img src="$3" style="width: $1px;" >', $text);
$text = preg_replace("/\[zmg\=([0-9]*)x([0-9]*)\](.*?)\[\/zmg\]/ism", '<img class="zrl" src="$3" style="width: $1px;" >', $text);
// Images
// [img]pathtoimage[/img]
$text = preg_replace_callback(
"/\[img\](.*?)\[\/img\]/ism",
function ($matches) {
if (strpos($matches[1], "data:image/") === 0) {
return $matches[0];
}
$matches[1] = proxy_url($matches[1]);
return "[img]" . $matches[1] . "[/img]";
},
$text
);
$text = preg_replace("/\[img\](.*?)\[\/img\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
$text = preg_replace("/\[zmg\](.*?)\[\/zmg\]/ism", '<img src="$1" alt="' . L10n::t('Image/photo') . '" />', $text);
// Shared content
$text = preg_replace_callback("/(.*?)\[share(.*?)\](.*?)\[\/share\]/ism",
function ($match) use ($simple_html) {
return self::convertShare($match, $simple_html);
}, $text);
$text = preg_replace("/\[crypt\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . L10n::t('Encrypted content') . '" /><br />', $text);
$text = preg_replace("/\[crypt(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . '$1' . ' ' . L10n::t('Encrypted content') . '" /><br />', $text);
//$Text = preg_replace("/\[crypt=(.*?)\](.*?)\[\/crypt\]/ism", '<br/><img src="' .System::baseUrl() . '/images/lock_icon.gif" alt="' . L10n::t('Encrypted content') . '" title="' . '$1' . ' ' . L10n::t('Encrypted content') . '" /><br />', $Text);
// Try to Oembed
if ($try_oembed) {
$text = preg_replace("/\[video\](.*?\.(ogg|ogv|oga|ogm|webm|mp4))\[\/video\]/ism", '<video src="$1" controls="controls" width="' . $a->videowidth . '" height="' . $a->videoheight . '" loop="true"><a href="$1">$1</a></video>', $text);
$text = preg_replace("/\[audio\](.*?\.(ogg|ogv|oga|ogm|webm|mp4|mp3))\[\/audio\]/ism", '<audio src="$1" controls="controls"><a href="$1">$1</a></audio>', $text);
$text = preg_replace_callback("/\[video\](.*?)\[\/video\]/ism", $try_oembed_callback, $text);
$text = preg_replace_callback("/\[audio\](.*?)\[\/audio\]/ism", $try_oembed_callback, $text);
} else {
$text = preg_replace("/\[video\](.*?)\[\/video\]/",
'<a href="$1" target="_blank">$1</a>', $text);
$text = preg_replace("/\[audio\](.*?)\[\/audio\]/",
'<a href="$1" target="_blank">$1</a>', $text);
}
// html5 video and audio
if ($try_oembed) {
$text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<iframe src="$1" width="' . $a->videowidth . '" height="' . $a->videoheight . '"><a href="$1">$1</a></iframe>', $text);
} else {
$text = preg_replace("/\[iframe\](.*?)\[\/iframe\]/ism", '<a href="$1">$1</a>', $text);
}
// Youtube extensions
if ($try_oembed) {
$text = preg_replace_callback("/\[youtube\](https?:\/\/www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
$text = preg_replace_callback("/\[youtube\](www.youtube.com\/watch\?v\=.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
$text = preg_replace_callback("/\[youtube\](https?:\/\/youtu.be\/.*?)\[\/youtube\]/ism", $try_oembed_callback, $text);
}
$text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
$text = preg_replace("/\[youtube\]https?:\/\/www.youtube.com\/embed\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
$text = preg_replace("/\[youtube\]https?:\/\/youtu.be\/(.*?)\[\/youtube\]/ism", '[youtube]$1[/youtube]', $text);
if ($try_oembed) {
$text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://www.youtube.com/embed/$1" frameborder="0" ></iframe>', $text);
} else {
$text = preg_replace("/\[youtube\]([A-Za-z0-9\-_=]+)(.*?)\[\/youtube\]/ism",
'<a href="https://www.youtube.com/watch?v=$1" target="_blank">https://www.youtube.com/watch?v=$1</a>', $text);
}
if ($try_oembed) {
$text = preg_replace_callback("/\[vimeo\](https?:\/\/player.vimeo.com\/video\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
$text = preg_replace_callback("/\[vimeo\](https?:\/\/vimeo.com\/[0-9]+).*?\[\/vimeo\]/ism", $try_oembed_callback, $text);
}
$text = preg_replace("/\[vimeo\]https?:\/\/player.vimeo.com\/video\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
$text = preg_replace("/\[vimeo\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/vimeo\]/ism", '[vimeo]$1[/vimeo]', $text);
if ($try_oembed) {
$text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism", '<iframe width="' . $a->videowidth . '" height="' . $a->videoheight . '" src="https://player.vimeo.com/video/$1" frameborder="0" ></iframe>', $text);
} else {
$text = preg_replace("/\[vimeo\]([0-9]+)(.*?)\[\/vimeo\]/ism",
'<a href="https://vimeo.com/$1" target="_blank">https://vimeo.com/$1</a>', $text);
}
// oembed tag
$text = OEmbed::BBCode2HTML($text);
// Avoid triple linefeeds through oembed
$text = str_replace("<br style='clear:left'></span><br /><br />", "<br style='clear:left'></span><br />", $text);
// If we found an event earlier, strip out all the event code and replace with a reformatted version.
// Replace the event-start section with the entire formatted event. The other bbcode is stripped.
// Summary (e.g. title) is required, earlier revisions only required description (in addition to
// start which is always required). Allow desc with a missing summary for compatibility.
if ((x($ev, 'desc') || x($ev, 'summary')) && x($ev, 'start')) {
$sub = format_event_html($ev, $simple_html);
$text = preg_replace("/\[event\-summary\](.*?)\[\/event\-summary\]/ism", '', $text);
$text = preg_replace("/\[event\-description\](.*?)\[\/event\-description\]/ism", '', $text);
$text = preg_replace("/\[event\-start\](.*?)\[\/event\-start\]/ism", $sub, $text);
$text = preg_replace("/\[event\-finish\](.*?)\[\/event\-finish\]/ism", '', $text);
$text = preg_replace("/\[event\-location\](.*?)\[\/event\-location\]/ism", '', $text);
$text = preg_replace("/\[event\-adjust\](.*?)\[\/event\-adjust\]/ism", '', $text);
$text = preg_replace("/\[event\-id\](.*?)\[\/event\-id\]/ism", '', $text);
}
// Replace non graphical smilies for external posts
if ($simple_html) {
$text = Smilies::replace($text, false, true);
}
// Replace inline code blocks
$text = preg_replace_callback("|(?!<br[^>]*>)<code>([^<]*)</code>(?!<br[^>]*>)|ism",
function ($match) use ($simple_html) {
$return = '<key>' . $match[1] . '</key>';
// Use <code> for Diaspora inline code blocks
if ($simple_html === 3) {
$return = '<code>' . $match[1] . '</code>';
}
return $return;
}
, $text);
// Unhide all [noparse] contained bbtags unspacefying them
// and triming the [noparse] tag.
$text = preg_replace_callback("/\[noparse\](.*?)\[\/noparse\]/ism", 'self::unescapeNoparseCallback', $text);
$text = preg_replace_callback("/\[nobb\](.*?)\[\/nobb\]/ism", 'self::unescapeNoparseCallback', $text);
$text = preg_replace_callback("/\[pre\](.*?)\[\/pre\]/ism", 'self::unescapeNoparseCallback', $text);
$text = preg_replace('/\[\&amp\;([#a-z0-9]+)\;\]/', '&$1;', $text);
$text = preg_replace('/\&\#039\;/', '\'', $text);
$text = preg_replace('/\&quot\;/', '"', $text);
// fix any escaped ampersands that may have been converted into links
$text = preg_replace('/\<([^>]*?)(src|href)=(.*?)\&amp\;(.*?)\>/ism', '<$1$2=$3&$4>', $text);
// sanitizes src attributes (http and redir URLs for displaying in a web page, cid used for inline images in emails)
$allowed_src_protocols = ['http', 'redir', 'cid'];
$text = preg_replace('#<([^>]*?)(src)="(?!' . implode('|', $allowed_src_protocols) . ')(.*?)"(.*?)>#ism',
'<$1$2=""$4 data-original-src="$3" class="invalid-src" title="' . L10n::t('Invalid source protocol') . '">', $text);
// sanitize href attributes (only whitelisted protocols URLs)
// default value for backward compatibility
$allowed_link_protocols = Config::get('system', 'allowed_link_protocols', ['ftp', 'mailto', 'gopher', 'cid']);
// Always allowed protocol even if config isn't set or not including it
$allowed_link_protocols[] = 'http';
$allowed_link_protocols[] = 'redir/';
$regex = '#<([^>]*?)(href)="(?!' . implode('|', $allowed_link_protocols) . ')(.*?)"(.*?)>#ism';
$text = preg_replace($regex, '<$1$2="javascript:void(0)"$4 data-original-href="$3" class="invalid-href" title="' . L10n::t('Invalid link protocol') . '">', $text);
if ($saved_image) {
$text = self::interpolateSavedImagesIntoItemBody($text, $saved_image);
}
// Clean up the HTML by loading and saving the HTML with the DOM.
// Bad structured html can break a whole page.
// For performance reasons do it only with ativated item cache or at export.
if (!$try_oembed || (get_itemcachepath() != "")) {
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
$text = mb_convert_encoding($text, 'HTML-ENTITIES', "UTF-8");
$doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">';
$encoding = '<?xml encoding="UTF-8">';
@$doc->loadHTML($encoding.$doctype."<html><body>".$text."</body></html>");
$doc->encoding = 'UTF-8';
$text = $doc->saveHTML();
$text = str_replace(["<html><body>", "</body></html>", $doctype, $encoding], ["", "", "", ""], $text);
$text = str_replace('<br></li>', '</li>', $text);
//$Text = mb_convert_encoding($Text, "UTF-8", 'HTML-ENTITIES');
}
// Clean up some useless linebreaks in lists
//$Text = str_replace('<br /><ul', '<ul ', $Text);
//$Text = str_replace('</ul><br />', '</ul>', $Text);
//$Text = str_replace('</li><br />', '</li>', $Text);
//$Text = str_replace('<br /><li>', '<li>', $Text);
//$Text = str_replace('<br /><ul', '<ul ', $Text);
Addon::callHooks('bbcode', $text);
return trim($text);
}
/**
* @brief Strips the "abstract" tag from the provided text
*
* @param string $text The text with BBCode
* @return string The same text - but without "abstract" element
*/
public static function stripAbstract($text)
{
$text = preg_replace("/[\s|\n]*\[abstract\].*?\[\/abstract\][\s|\n]*/ism", '', $text);
$text = preg_replace("/[\s|\n]*\[abstract=.*?\].*?\[\/abstract][\s|\n]*/ism", '', $text);
return $text;
}
/**
* @brief Returns the value of the "abstract" element
*
* @param string $text The text that maybe contains the element
* @param string $addon The addon for which the abstract is meant for
* @return string The abstract
*/
private static function getAbstract($text, $addon = "")
{
$abstract = "";
$abstracts = [];
$addon = strtolower($addon);
if (preg_match_all("/\[abstract=(.*?)\](.*?)\[\/abstract\]/ism", $text, $results, PREG_SET_ORDER)) {
foreach ($results AS $result) {
$abstracts[strtolower($result[1])] = $result[2];
}
}
if (isset($abstracts[$addon])) {
$abstract = $abstracts[$addon];
}
if ($abstract == "" && preg_match("/\[abstract\](.*?)\[\/abstract\]/ism", $text, $result)) {
$abstract = $result[1];
}
return $abstract;
}
/**
* @brief Callback function to replace a Friendica style mention in a mention for Diaspora
*
* @param array $match Matching values for the callback
* @return string Replaced mention
*/
private static function bbCodeMention2DiasporaCallback($match)
{
$contact = Contact::getDetailsByURL($match[3]);
if (empty($contact['addr'])) {
$contact = Probe::uri($match[3]);
}
if (empty($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 $for_diaspora Diaspora requires more changes than Libertree
* @return string
*/
public static function toMarkdown($text, $for_diaspora = true)
{
$a = self::getApp();
$original_text = $text;
// Since Diaspora is creating a summary for links, this function removes them before posting
if ($for_diaspora) {
$text = self::removeShareInformation($text);
}
/**
* Transform #tags, strip off the [url] and replace spaces with underscore
*/
$url_search_string = "^\[\]";
$text = preg_replace_callback("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/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 self::convert()
$codeblocks = [];
$text = preg_replace_callback("#\[code(?:=([^\]]*))?\](.*?)\[\/code\]#is",
function ($matches) use (&$codeblocks) {
$return = $matches[0];
if (strpos($matches[2], "\n") !== false) {
$return = '#codeblock-' . count($codeblocks) . '#';
$prefix = '````' . $matches[1] . PHP_EOL;
$codeblocks[] = $prefix . trim($matches[2]) . PHP_EOL . '````';
}
return $return;
},
$text
);
// Convert it to HTML - don't try oembed
if ($for_diaspora) {
$text = self::convert($text, false, 3);
// Add all tags that maybe were removed
if (preg_match_all("/#\[url\=([$url_search_string]*)\](.*?)\[\/url\]/ism", $original_text, $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 {
$text = self::convert($text, false, 4);
}
// mask some special HTML chars from conversation to markdown
$text = str_replace(['&lt;', '&gt;', '&amp;'], ['&_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(["</a><blockquote>"], ["</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(['&\_lt\_;', '&\_gt\_;', '&\_amp\_;'], ['&lt;', '&gt;', '&amp;'], $text);
$a->save_timestamp($stamp1, "parser");
// Libertree has a problem with escaped hashtags.
$text = str_replace(['\#'], ['#'], $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 ($for_diaspora) {
$url_search_string = "^\[\]";
$text = preg_replace_callback(
"/([@]\[(.*?)\])\(([$url_search_string]*?)\)/ism",
['self', 'bbCodeMention2DiasporaCallback'],
$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
);
Addon::callHooks('bb2diaspora', $text);
return $text;
}
}