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/*
This file is part of libdjinterop.
libdjinterop is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
libdjinterop is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with libdjinterop. If not, see <http://www.gnu.org/licenses/>.
*/
#include <djinterop/impl/util.hpp>
#include <ios>
#include <optional>
#include <random>
#include <sstream>
#include <string>
namespace djinterop
{
std::string get_filename(const std::string& file_path)
{
// TODO (haslersn): How to handle Windows path separator?
auto slash_pos = file_path.rfind('/'); // returns -1 in case of no match
return file_path.substr(slash_pos + 1);
}
std::optional<std::string> get_file_extension(const std::string& file_path)
{
auto filename = get_filename(file_path);
std::optional<std::string> file_extension;
auto dot_pos = filename.rfind('.');
if (dot_pos != std::string::npos)
{
file_extension = filename.substr(dot_pos + 1);
}
return file_extension;
}
std::string generate_random_uuid()
{
static std::random_device rng;
static std::mt19937 generator{rng()};
static std::uniform_int_distribution<int> nibble_dist{0, 15};
static std::uniform_int_distribution<int> variant_nibble_dist{8, 11};
// Generate a version 4 (random), variant 1 UUID.
std::stringstream ss;
ss
<< std::hex
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< "-"
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< "-4" // Version 4 indicator
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< "-"
<< variant_nibble_dist(generator) // Variant 1 indicator
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< "-"
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator)
<< nibble_dist(generator);
return ss.str();
}
} // namespace djinterop
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