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/* Copyright (c) 2008-2022 the MRtrix3 contributors.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Covered Software is provided under this License on an "as is"
* basis, without warranty of any kind, either expressed, implied, or
* statutory, including, without limitation, warranties that the
* Covered Software is free of defects, merchantable, fit for a
* particular purpose or non-infringing.
* See the Mozilla Public License v. 2.0 for more details.
*
* For more details, see http://www.mrtrix.org/.
*/
#include <unistd.h>
#include "signal_handler.h"
#include "file/utils.h"
#include "file/path.h"
#include "header.h"
#include "image_io/pipe.h"
#include "formats/list.h"
namespace MR
{
namespace Formats
{
std::unique_ptr<ImageIO::Base> Pipe::read (Header& H) const
{
if (is_dash (H.name())) {
std::string name;
getline (std::cin, name);
H.name() = name;
}
else {
if (!File::is_tempfile (H.name()))
return std::unique_ptr<ImageIO::Base>();
}
if (H.name().empty())
throw Exception ("no filename supplied to standard input (broken pipe?)");
if (ImageIO::Pipe::delete_piped_images)
SignalHandler::mark_file_for_deletion (H.name());
if (!Path::has_suffix (H.name(), ".mif"))
throw Exception ("MRtrix only supports the .mif format for command-line piping");
std::unique_ptr<ImageIO::Base> original_handler (mrtrix_handler.read (H));
std::unique_ptr<ImageIO::Pipe> io_handler (new ImageIO::Pipe (std::move (*original_handler)));
return std::move (io_handler);
}
bool Pipe::check (Header& H, size_t num_axes) const
{
if (!is_dash (H.name()))
return false;
if (isatty (STDOUT_FILENO))
throw Exception ("attempt to pipe image to standard output (this will leave temporary files behind)");
H.name() = File::create_tempfile (0, "mif");
SignalHandler::mark_file_for_deletion (H.name());
return mrtrix_handler.check (H, num_axes);
}
std::unique_ptr<ImageIO::Base> Pipe::create (Header& H) const
{
std::unique_ptr<ImageIO::Base> original_handler (mrtrix_handler.create (H));
std::unique_ptr<ImageIO::Pipe> io_handler (new ImageIO::Pipe (std::move (*original_handler)));
return std::move (io_handler);
}
}
}
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