public function apply($value)
{
$result = basename((string) $value);
$result = preg_replace('@[/?*:;{}\\\\]@', '', $result);
if ($this->paranoid) {
$result = preg_replace('@[^A-Z0-9_.-]@i', '', $result);
}
if (String::length($result) > $this->maxLength) {
if (($dotPos = strpos($result, '.')) !== false) {
$extension = substr($result, $dotPos + 1);
$basename = substr($result, 0, $dotPos);
$result = String::substr($basename, 0, $this->maxLength - String::length($extension) - 1) . '.' . $extension;
} else {
$result = String::substr($result, 0, $this->maxLength);
}
}
return $result;
}
public function testSubstr()
{
$t = 'Waschbär';
$this->assertEquals(String::substr($t, 0), $t);
$this->assertEquals(String::substr($t, 1), 'aschbär');
$this->assertEquals(String::substr($t, 6), 'är');
$this->assertEquals(String::substr($t, 0, 1), 'W');
$this->assertEquals(String::substr($t, 6, 1), 'ä');
$this->assertEquals(String::substr($t, -2, 1), 'ä');
$this->assertEquals(String::substr($t, -2), 'är');
$this->assertEquals(String::substr($t, -2, 0), '');
$this->assertEquals(String::substr($t, 0, 0), '');
$this->assertEquals(String::substr($t, 1, 0), '');
$this->assertEquals(String::substr(chr(0xe4) . chr(0xf6) . chr(0xe4), 1, 1), chr(0xf6));
$this->assertEquals(String::substr(chr(0xe4) . chr(0xf6) . chr(0xe4), 1), chr(0xf6) . chr(0xe4));
}