/**
* Returns options part of command
*
* @param mixed $width
* @param mixed $height
* @param null|int $quality
* @return string
*/
private function getCommandOptions($width, $height, $quality)
{
$options = [];
if (isset($width) && (int) $width === 0) {
$width = $this->image->getWidth() . '!';
}
if (isset($height) && (int) $height === 0) {
$height = $this->image->getHeight() . '!';
}
if (!isset($height)) {
$options['resize'] = '"' . $width . '"';
} elseif (!isset($width)) {
$options['resize'] = '"x' . $height . '"';
} else {
$options['resize'] = '"' . Strings::trim($width, '!') . 'x' . Strings::trim($height, '!') . '^"';
}
if (isset($width) && isset($height)) {
$options['gravity'] = 'center';
$options['crop'] = '"' . $width . 'x' . $height . '+0+0"';
}
if (isset($quality) && $quality !== 0) {
$options['quality'] = $quality;
}
$command = [];
foreach ($options as $opt => $value) {
$command[] = '-' . $opt . ' ' . $value;
}
return implode(' ', $command);
}
