/**
* Sets the length of the character sequence.
* The sequence is changed to a new character sequence
* whose length is specified by the argument. For every nonnegative
* index <i>k</i> less than {@code newLength}, the character at
* index <i>k</i> in the new character sequence is the same as the
* character at index <i>k</i> in the old sequence if <i>k</i> is less
* than the length of the old character sequence; otherwise, it is the
* null character {@code '\0'}.
*
* In other words, if the {@code newLength} argument is less than
* the current length, the length is changed to the specified length.
* <p>
* If the {@code newLength} argument is greater than or equal
* to the current length, sufficient null characters
* ({@code '\0'}) are appended so that
* length becomes the {@code newLength} argument.
* <p>
* The {@code newLength} argument must be greater than or equal
* to {@code 0}.
*
* @param $newLength int
* the new length
* @throws StringIndexOutOfBoundsException if the
* {@code newLength} argument is negative.
*/
public function setLength($newLength)
{
if ($newLength < 0) {
throw new StringIndexOutOfBoundsException($newLength);
}
$this->ensureCapacityInternal($newLength);
if ($this->length() < $newLength) {
Arrays::fillFromTo($this->value, $this->length(), $newLength, "");
}
$this->count = $newLength;
}
public function testFillFromTo()
{
$str = "";
Arrays::fillFromTo($str, 0, 200, "");
$this->assertEquals(200, mb_strlen($str));
}
