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Versions: 8
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Stored size: 1.66 KB
Contents
/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2020-Present Couchbase, Inc.
*
* Licensed 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.
*/
#include <algorithm>
#include <cinttypes>
#include <vector>
namespace couchbase::core::impl::subdoc
{
std::vector<std::byte>
join_values(const std::vector<std::vector<std::byte>>& values)
{
if (values.empty()) {
return {};
}
if (values.size() == 1) {
return values.front();
}
constexpr std::byte comma{ ',' };
std::size_t total_length = values.size() - 1;
for (const auto& v : values) {
total_length += v.size();
}
std::vector<std::byte> result;
result.resize(total_length);
auto sentinel = std::end(values);
auto output = result.begin();
if (auto it = std::begin(values); it != sentinel) {
output = std::copy(it->begin(), it->end(), output);
++it;
while (it != sentinel) {
*output = comma;
++output;
output = std::copy(it->begin(), it->end(), output);
++it;
}
}
return result;
}
} // namespace couchbase::core::impl::subdoc
Version data entries
8 entries across 8 versions & 1 rubygems