presto-hive/src/main/java/io/prestosql/plugin/hive/util/HiveUtil.java/HiveUtil/toPartitionValues
class HiveUtil:    public static List<String> toPartitionValues(String partitionName)
    {
        // mimics Warehouse.makeValsFromName
        ImmutableList.Builder<String> resultBuilder = ImmutableList.builder();
        int start = 0;
        while (true) {
            while (start < partitionName.length() && partitionName.charAt(start) != '=') {
                start++;
            }
            start++;
            int end = start;
            while (end < partitionName.length() && partitionName.charAt(end) != '/') {
                end++;
            }
            if (start > partitionName.length()) {
                break;
            }
            resultBuilder.add(unescapePathName(partitionName.substring(start, end)));
            start = end + 1;
        }
        return resultBuilder.build();
    }