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 include/plaintext.php
*/
use Friendica\ParseUrl;
require_once("include/Photo.php");
require_once("include/bbcode.php");
require_once("include/html2plain.php");
require_once("include/network.php");
/**
* @brief Fetches attachment data that were generated the old way
*
* @param string $body Message body
* @return array
* 'type' -> Message type ("link", "video", "photo")
* 'text' -> Text before the shared message
* 'after' -> Text after the shared message
* 'image' -> Preview image of the message
* 'url' -> Url to the attached message
* 'title' -> Title of the attachment
* 'description' -> Description of the attachment
*/
function get_old_attachment_data($body) {
$post = array();
// 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], array("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)) {
$picturedata = get_photo_info($matches[1]);
if (($picturedata[0] >= 500) AND ($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"] == "") AND (in_array($post["type"], array("link", "video")))
AND 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 $body Message body
* @return array
* 'type' -> Message type ("link", "video", "photo")
* 'text' -> Text before the shared message
* 'after' -> Text after the shared message
* 'image' -> Preview image of the message
* 'url' -> Url to the attached message
* 'title' -> Title of the attachment
* 'description' -> Description of the attachment
*/
function get_attachment_data($body) {
$data = array();
if (!preg_match("/(.*)\[attachment(.*?)\](.*?)\[\/attachment\](.*)/ism", $body, $match))
return get_old_attachment_data($body);
$attributes = $match[2];
$data["text"] = trim($match[1]);
$type = "";
preg_match("/type='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$type = strtolower($matches[1]);
preg_match('/type="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$type = strtolower($matches[1]);
if ($type == "")
return(array());
if (!in_array($type, array("link", "audio", "photo", "video")))
return(array());
if ($type != "")
$data["type"] = $type;
$url = "";
preg_match("/url='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$url = $matches[1];
preg_match('/url="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$url = $matches[1];
if ($url != "")
$data["url"] = html_entity_decode($url, ENT_QUOTES, 'UTF-8');
$title = "";
preg_match("/title='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$title = $matches[1];
preg_match('/title="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$title = $matches[1];
if ($title != "") {
$title = bbcode(html_entity_decode($title, ENT_QUOTES, 'UTF-8'), false, false, true);
$title = html_entity_decode($title, ENT_QUOTES, 'UTF-8');
$title = str_replace(array("[", "]"), array("&#91;", "&#93;"), $title);
$data["title"] = $title;
}
$image = "";
preg_match("/image='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$image = $matches[1];
preg_match('/image="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$image = $matches[1];
if ($image != "")
$data["image"] = html_entity_decode($image, ENT_QUOTES, 'UTF-8');
$preview = "";
preg_match("/preview='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$preview = $matches[1];
preg_match('/preview="(.*?)"/ism', $attributes, $matches);
if ($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($data);
}
function get_attached_data($body) {
/*
- text:
- type: link, video, photo
- title:
- url:
- image:
- description:
- (thumbnail)
*/
$post = get_attachment_data($body);
// if nothing is found, it maybe having an image.
if (!isset($post["type"])) {
$URLSearchString = "^\[\]";
if (preg_match_all("(\[url=([$URLSearchString]*)\]\s*\[img\]([$URLSearchString]*)\[\/img\]\s*\[\/url\])ism", $body, $pictures, PREG_SET_ORDER)) {
if (count($pictures) == 1) {
// 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 (($data["type"] != "photo") AND strstr($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 {
$imgdata = get_photo_info($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) > 1) {
$post["type"] = "link";
$post["url"] = $b["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) {
$post["type"] = "photo";
$post["image"] = $pictures[0][1];
$post["text"] = str_replace($pictures[0][0], "", $body);
} elseif (count($pictures) > 1) {
$post["type"] = "link";
$post["url"] = $b["plink"];
$post["image"] = $pictures[0][1];
$post["text"] = $body;
}
}
if (preg_match_all("(\[url\]([$URLSearchString]*)\[\/url\])ism", $body, $links, PREG_SET_ORDER)) {
if (count($links) == 1) {
$post["type"] = "text";
$post["url"] = $links[0][1];
$post["text"] = $body;
}
}
if (!isset($post["type"])) {
$post["type"] = "text";
$post["text"] = trim($body);
}
} elseif (isset($post["url"]) AND ($post["type"] == "video")) {
$data = ParseUrl::getSiteinfoCached($post["url"], true);
if (isset($data["images"][0]))
$post["image"] = $data["images"][0]["src"];
}
return($post);
}
function shortenmsg($msg, $limit, $twitter = false) {
/// @TODO
/// For Twitter URLs aren't shortened, but they have to be calculated as if.
$lines = explode("\n", $msg);
$msg = "";
$recycle = html_entity_decode("&#x2672; ", ENT_QUOTES, 'UTF-8');
$ellipsis = html_entity_decode("&#x2026;", ENT_QUOTES, 'UTF-8');
foreach ($lines AS $row=>$line) {
if (iconv_strlen(trim($msg."\n".$line), "UTF-8") <= $limit)
$msg = trim($msg."\n".$line);
// Is the new message empty by now or is it a reshared message?
elseif (($msg == "") OR (($row == 1) AND (substr($msg, 0, 4) == $recycle)))
$msg = iconv_substr(iconv_substr(trim($msg."\n".$line), 0, $limit, "UTF-8"), 0, -3, "UTF-8").$ellipsis;
else
break;
}
return($msg);
}
/**
* @brief Convert a message into plaintext for connectors to other networks
*
* @param App $a The application class
* @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
*/
function plaintext(App $a, $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
$body = remove_abstract($body);
// At first look at data that is attached via "type-..." stuff
// This will hopefully replaced with a dedicated bbcode later
//$post = get_attached_data($b["body"]);
$post = get_attached_data($body);
if (($b["title"] != "") AND ($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 != "") {
$default_abstract = fetch_abstract($b["body"]);
$abstract = fetch_abstract($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) AND ($abstract == $default_abstract))
$abstract = "";
} else // Try to guess the correct target network
switch ($htmlmode) {
case 8:
$abstract = fetch_abstract($b["body"], NETWORK_TWITTER);
break;
case 7:
$abstract = fetch_abstract($b["body"], NETWORK_STATUSNET);
break;
case 6:
$abstract = fetch_abstract($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)
$abstract = fetch_abstract($b["body"]);
}
if ($abstract != "") {
$post["text"] = $abstract;
if ($post["type"] == "text") {
$post["type"] = "link";
$post["url"] = $b["plink"];
}
}
$html = bbcode($post["text"].$post["after"], false, 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 == "") AND isset($post["title"]))
$msg = trim($post["title"]);
if (($msg == "") AND isset($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 (($link != "") AND strstr($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) AND ($pos < $limit) AND (($pos + 23 > $limit) OR ($pos + strlen($link) == strlen($msg))))
$msg = trim(str_replace($link, "", $msg));
elseif (($limit == 0) OR ($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) AND (strlen($link) > 23) AND ($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") AND isset($post["url"]))
$post["url"] = $b["plink"];
elseif (!isset($post["url"])) {
$limit = $limit - 23;
$post["url"] = $b["plink"];
} elseif (strpos($b["body"], "[share") !== false)
$post["url"] = $b["plink"];
elseif (get_pconfig($b["uid"], "system", "no_intelligent_shortening"))
$post["url"] = $b["plink"];
$msg = shortenmsg($msg, $limit);
}
}
$post["text"] = trim($msg);
return($post);
}
?>