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/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2020 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight 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.
*
* Sight 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 Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "io/__/reader/gz_array_reader.hpp"
#include <zlib.h>
#include <iostream>
namespace sight::io::reader
{
//------------------------------------------------------------------------------
void gz_array_reader::read()
{
std::filesystem::path file = this->get_file();
assert(file.empty() == false);
data::array::sptr array = this->get_concrete_object();
std::size_t array_size_in_bytes = array->resize(array->size());
const auto dump_lock = array->dump_lock();
void* buff = array->buffer();
gzFile raw_file = gzopen(file.string().c_str(), "rb");
if(raw_file == nullptr)
{
gzclose(raw_file);
std::string str = "Unable to open ";
str += file.string();
throw std::ios_base::failure(str);
}
const int un_compressed_bytes_read = gzread(raw_file, buff, static_cast<unsigned int>(array_size_in_bytes));
gzclose(raw_file);
if(un_compressed_bytes_read != static_cast<int>(array_size_in_bytes))
{
std::string str = "Unable to read ";
str += file.string();
throw std::ios_base::failure(str);
}
}
//------------------------------------------------------------------------------
std::string gz_array_reader::extension() const
{
return ".raw.gz";
}
//------------------------------------------------------------------------------
} // namespace sight::io::reader
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