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/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;
}
/**
* Returns the character positions of the provided boundaries, optionally skipping a number of first occurrences
*
* @param string $text Text to search
* @param string $open Left boundary
* @param string $close Right boundary
* @param int $occurrences Number of first occurrences to skip
* @return boolean|array
*/
public static function getBoundariesPosition($text, $open, $close, $occurrences = 0)
{
if ($occurrences < 0) {
$occurrences = 0;
}
$start_pos = -1;
for ($i = 0; $i <= $occurrences; $i++) {
if ($start_pos !== false) {
$start_pos = strpos($text, $open, $start_pos + 1);
}
}
if ($start_pos === false) {
return false;
}
$end_pos = strpos($text, $close, $start_pos);
if ($end_pos === false) {
return false;
}
$res = ['start' => $start_pos, 'end' => $end_pos];
return $res;
}
}