|
<?php defined('SYSPATH') or die('No direct script access.');
|
|
/**
|
|
* utf8::ord
|
|
*
|
|
* @package Core
|
|
* @author Kohana Team
|
|
* @copyright (c) 2007 Kohana Team
|
|
* @copyright (c) 2005 Harry Fuecks
|
|
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
|
|
*/
|
|
function _ord($chr)
|
|
{
|
|
$ord0 = ord($chr);
|
|
|
|
if ($ord0 >= 0 AND $ord0 <= 127)
|
|
{
|
|
return $ord0;
|
|
}
|
|
|
|
if ( ! isset($chr[1]))
|
|
{
|
|
trigger_error('Short sequence - at least 2 bytes expected, only 1 seen', E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
|
|
$ord1 = ord($chr[1]);
|
|
|
|
if ($ord0 >= 192 AND $ord0 <= 223)
|
|
{
|
|
return ($ord0 - 192) * 64 + ($ord1 - 128);
|
|
}
|
|
|
|
if ( ! isset($chr[2]))
|
|
{
|
|
trigger_error('Short sequence - at least 3 bytes expected, only 2 seen', E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
|
|
$ord2 = ord($chr[2]);
|
|
|
|
if ($ord0 >= 224 AND $ord0 <= 239)
|
|
{
|
|
return ($ord0 - 224) * 4096 + ($ord1 - 128) * 64 + ($ord2 - 128);
|
|
}
|
|
|
|
if ( ! isset($chr[3]))
|
|
{
|
|
trigger_error('Short sequence - at least 4 bytes expected, only 3 seen', E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
|
|
$ord3 = ord($chr[3]);
|
|
|
|
if ($ord0 >= 240 AND $ord0 <= 247)
|
|
{
|
|
return ($ord0 - 240) * 262144 + ($ord1 - 128) * 4096 + ($ord2-128) * 64 + ($ord3 - 128);
|
|
}
|
|
|
|
if ( ! isset($chr[4]))
|
|
{
|
|
trigger_error('Short sequence - at least 5 bytes expected, only 4 seen', E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
|
|
$ord4 = ord($chr[4]);
|
|
|
|
if ($ord0 >= 248 AND $ord0 <= 251)
|
|
{
|
|
return ($ord0 - 248) * 16777216 + ($ord1-128) * 262144 + ($ord2 - 128) * 4096 + ($ord3 - 128) * 64 + ($ord4 - 128);
|
|
}
|
|
|
|
if ( ! isset($chr[5]))
|
|
{
|
|
trigger_error('Short sequence - at least 6 bytes expected, only 5 seen', E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
|
|
if ($ord0 >= 252 AND $ord0 <= 253)
|
|
{
|
|
return ($ord0 - 252) * 1073741824 + ($ord1 - 128) * 16777216 + ($ord2 - 128) * 262144 + ($ord3 - 128) * 4096 + ($ord4 - 128) * 64 + (ord($c[5]) - 128);
|
|
}
|
|
|
|
if ($ord0 >= 254 AND $ord0 <= 255)
|
|
{
|
|
trigger_error('Invalid UTF-8 with surrogate ordinal '.$ord0, E_USER_WARNING);
|
|
return FALSE;
|
|
}
|
|
}
|