/**
* @access private
*/
private static function checkRanges($start, $end, $use_range, $range_header)
{
if ($end && !$start) {
throw new \InvalidArgumentException("May not specify an end range value without a start value.");
}
$use_indexes = isset($start);
if ($use_indexes) {
if (isset($end)) {
if ($start > $end) {
throw new \InvalidArgumentException(sprintf("Start range (%d) cannot be greater than the end range (%d).", $start, $end));
}
if ($start < 0) {
throw new \InvalidArgumentException(sprintf("The start range (%d) cannot be less than 0.", $start));
}
}
$range_indexes = BlobstoreService::serializeRange($start, $end);
}
// If both headers and index parameters are in use they must be the same.
if ($use_range && $use_indexes) {
if (strcmp($range_header, $range_indexes) != 0) {
throw new \InvalidArgumentException(sprintf("May not provide non-equivalent range indexes and " . "range headers: (header) %s != (indexes) %s.", $range_header, $range_indexes));
}
}
if ($use_range && isset($range_header)) {
return $range_header;
} else {
if ($use_indexes) {
return $range_indexes;
} else {
return null;
}
}
}
