friendica/src/Content/Text/Plaintext.php

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<?php
/**
* @file src/Content/Text/Plaintext.php
*/
namespace Friendica\Content\Text;
class Plaintext
{
/**
* Shortens message
*
* @param type $msg
* @param type $limit
* @return type
*
* @todo For Twitter URLs aren't shortened, but they have to be calculated as if.
*/
public static function shorten($msg, $limit)
{
$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" . $line);
} elseif (($msg == "") || (($row == 1) && (substr($msg, 0, 4) == $recycle))) {
// Is the new message empty by now or is it a reshared message?
$msg = iconv_substr(iconv_substr(trim($msg . "\n" . $line), 0, $limit, "UTF-8"), 0, -3, "UTF-8") . $ellipsis;
} else {
break;
}
}
return $msg;
}
}