//  Copyright (c) Meta Platforms, Inc. and affiliates.

//  This source code is licensed under both the GPLv2 (found in the

//  COPYING file in the root directory) and Apache 2.0 License

//  (found in the LICENSE.Apache file in the root directory).

#include "db/wide/wide_columns_helper.h"

#include <algorithm>

#include <ios>

#include "db/wide/wide_column_serialization.h"

namespace ROCKSDB_NAMESPACE {

void WideColumnsHelper::DumpWideColumns(const WideColumns& columns,

                                        std::ostream& os, bool hex) {

  if (columns.empty()) {

    return;

  }

  const std::ios_base::fmtflags orig_flags = os.flags();

  if (hex) {

    os << std::hex;

  }

  auto it = columns.begin();

  os << *it;

  for (++it; it != columns.end(); ++it) {

    os << ' ' << *it;

  }

  os.flags(orig_flags);

}

Status WideColumnsHelper::DumpSliceAsWideColumns(const Slice& value,

                                                 std::ostream& os, bool hex) {

  WideColumns columns;

  Slice value_copy = value;

  const Status s = WideColumnSerialization::Deserialize(value_copy, columns);

  if (s.ok()) {

    DumpWideColumns(columns, os, hex);

  }

  return s;

}

void WideColumnsHelper::SortColumns(WideColumns& columns) {

  std::sort(columns.begin(), columns.end(),

            [](const WideColumn& lhs, const WideColumn& rhs) {

              return lhs.name().compare(rhs.name()) < 0;

            });

}

}  // namespace ROCKSDB_NAMESPACE