// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you under the Apache License, Version 2.0 (the

// "License"); you may not use this file except in compliance

// with the License.  You may obtain a copy of the License at

//

//   http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing,

// software distributed under the License is distributed on an

// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

// KIND, either express or implied.  See the License for the

// specific language governing permissions and limitations

// under the License.

#pragma once

#include <fmt/format.h>

#include <string>

namespace doris {

// Builds an output file name of the form "{prefix}{id}_{idx}.{suffix}", shared by

// the SELECT INTO OUTFILE writer (VFileResultWriter) and the INSERT INTO FUNCTION

// TVF writer (VTVFTableWriter).

//

// When pad > 0 the index is zero-padded to `pad` digits so that the files produced

// by a single writer sort lexicographically (e.g. _00011 sorts after _00002 rather

// than before _2). pad <= 0 leaves the index unpadded, which is byte-for-byte the

// historical name format.

inline std::string build_result_file_name(const std::string& prefix, const std::string& id, int idx,

                                          int pad, const std::string& suffix) {

    return fmt::format("{}{}_{:0{}}.{}", prefix, id, idx, pad < 0 ? 0 : pad, suffix);

}

} // namespace doris