/**
* Create a color palette from a file
*
* @static
* @param string $filename
* @param string $delimiter
* @throws Exception
* @return Palette
*/
public static function fromFile($filename, $delimiter = ',')
{
$handle = @fopen($filename, 'r');
if (!$handle) {
throw new Exception('Failed to open file in loadColorPalette');
}
$palette = new Palette();
$idx = 0;
while (!feof($handle)) {
$buffer = fgets($handle, 4096);
$buffer = str_replace(chr(10), '', $buffer);
$buffer = str_replace(chr(13), '', $buffer);
$values = explode($delimiter, $buffer);
$values = array_map('trim', $values);
if (count($values) == 3) {
$palette->setColor($idx, new Color($values[0], $values[1], $values[2]));
$idx++;
} elseif (count($values) == 1 && $values[0] !== '') {
$palette->setColor($idx, new Color($values[0]));
}
}
return $palette;
}
