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/**
* SPDX-FileCopyrightText: 2020-2023 Osimis S.A., 2024-2025 Orthanc Team SRL, 2021-2025 Sebastien Jodogne, ICTEAM UCLouvain
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
/**
* Python plugin for Orthanc
* Copyright (C) 2020-2023 Osimis S.A., Belgium
* Copyright (C) 2024-2025 Orthanc Team SRL, Belgium
* Copyright (C) 2021-2025 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
*
* This program is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program 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
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**/
#include "PythonModule.h"
#include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h"
#include "PythonString.h"
#include <boost/thread/mutex.hpp>
#include <set>
#if PY_VERSION_HEX < 0x03070000 /* 3.7.0 */
static PythonObject* GetModule(PythonLock& lock,
const std::string& utf8Name)
{
static boost::mutex mutex_;
static std::set<std::string> loadedModules_;
boost::mutex::scoped_lock l(mutex_);
if (loadedModules_.find(utf8Name) == loadedModules_.end())
{
PythonString tmp(lock, utf8Name);
// The module is not imported yet
loadedModules_.insert(utf8Name);
return new PythonObject(lock, PyImport_Import(tmp.GetPyObject()), false);
}
else
{
// PyImport_AddModule returns a borrowed reference
return new PythonObject(lock, PyImport_AddModule(utf8Name.c_str()), true);
}
}
#else
// The "PyImport_GetModule()" function was introduced in Python
// 3.7.0
static PythonObject* GetModule(PythonLock& lock,
const std::string& utf8Name)
{
PythonString tmp(lock, utf8Name);
PyObject* module = PyImport_GetModule(tmp.GetPyObject());
if (module != NULL)
{
// The module was already imported by a previous call: Reuse it
return new PythonObject(lock, module);
}
else
{
// This is the first time this module is used: Import it
return new PythonObject(lock, PyImport_Import(tmp.GetPyObject()));
}
}
#endif
PythonModule::PythonModule(PythonLock& lock,
const std::string& utf8Name) :
lock_(lock),
name_(utf8Name)
{
module_.reset(GetModule(lock, utf8Name));
}
bool PythonModule::IsValid() const
{
return (module_.get() != NULL &&
module_->IsValid());
}
PythonObject& PythonModule::GetObject() const
{
if (!IsValid())
{
ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls);
}
else
{
return *module_;
}
}
PyObject* PythonModule::GetPyObject() const
{
if (!IsValid())
{
ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls);
}
else
{
return module_->GetPyObject();
}
}
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