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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2017-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// This file is part of Octave.
//
// Octave is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Octave 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Octave; see the file COPYING. If not, see
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
// Extracted from urlwrite.cc.
#if ! defined (octave_url_handle_manager)
#define octave_url_handle_manager 1
#include "octave-config.h"
#include <cmath>
#include <map>
#include <set>
#include "lo-mappers.h"
#include "oct-handle.h"
#include "url-transfer.h"
namespace octave
{
typedef octave_handle url_handle;
class OCTINTERP_API url_handle_manager
{
public:
url_handle_manager (void)
: handle_map (), handle_free_list (),
next_handle (-1.0 - (rand () + 1.0) / (RAND_MAX + 2.0)) { }
url_handle_manager (const url_handle_manager&) = delete;
url_handle_manager& operator = (const url_handle_manager&) = delete;
~url_handle_manager (void) = default;
url_handle get_handle (void);
void free (const url_handle& h);
url_handle lookup (double val)
{
iterator p = (math::isnan (val) ? handle_map.end ()
: handle_map.find (val));
return (p != handle_map.end ()) ? p->first : url_handle ();
}
url_handle lookup (const octave_value& val)
{
return val.is_real_scalar () ? lookup (val.double_value ())
: url_handle ();
}
url_transfer get_object (double val)
{
return get_object (lookup (val));
}
url_transfer get_object (const octave_value& val)
{
return get_object (lookup (val));
}
url_transfer get_object (const url_handle& h)
{
iterator p = (h.ok () ? handle_map.find (h) : handle_map.end ());
return (p != handle_map.end ()) ? p->second : url_transfer ();
}
url_handle make_url_handle (const std::string& host,
const std::string& user,
const std::string& passwd,
std::ostream& os)
{
url_handle h = get_handle ();
url_transfer obj (host, user, passwd, os);
if (! obj.is_valid ())
error ("support for URL transfers was disabled when Octave was built");
handle_map[h] = obj;
return h;
}
Matrix handle_list (void)
{
Matrix retval (1, handle_map.size ());
octave_idx_type i = 0;
for (const auto& h_obj : handle_map)
{
url_handle h = h_obj.first;
retval(i++) = h.value ();
}
return retval;
}
private:
typedef std::map<url_handle, url_transfer>::iterator iterator;
typedef std::map<url_handle, url_transfer>::const_iterator const_iterator;
typedef std::set<url_handle>::iterator free_list_iterator;
typedef std::set<url_handle>::const_iterator const_free_list_iterator;
// A map of handles to curl objects.
std::map<url_handle, url_transfer> handle_map;
// The available curl handles.
std::set<url_handle> handle_free_list;
// The next handle available if handle_free_list is empty.
double next_handle;
};
}
#endif
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