bool QgsPythonUtilsImpl::evalString( const QString& command, QString& result )
{
// acquire global interpreter lock to ensure we are in a consistent state
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
PyObject* res = PyRun_String( command.toUtf8().data(), Py_eval_input, mMainDict, mMainDict );
bool success = nullptr != res;
// TODO: error handling
if ( success )
result = PyObjectToQString( res );
// we are done calling python API, release global interpreter lock
PyGILState_Release( gstate );
return success;
}
QString QgsPythonUtilsImpl::getTypeAsString( PyObject* obj )
{
if ( obj == NULL )
return NULL;
if ( PyClass_Check( obj ) )
{
QgsDebugMsg( "got class" );
return QString( PyString_AsString((( PyClassObject* )obj )->cl_name ) );
}
else if ( PyType_Check( obj ) )
{
QgsDebugMsg( "got type" );
return QString((( PyTypeObject* )obj )->tp_name );
}
else
{
QgsDebugMsg( "got object" );
return PyObjectToQString( obj );
}
}
bool QgsPythonUtilsImpl::getError( QString& errorClassName, QString& errorText )
{
// acquire global interpreter lock to ensure we are in a consistent state
PyGILState_STATE gstate;
gstate = PyGILState_Ensure();
if ( !PyErr_Occurred() )
{
PyGILState_Release( gstate );
return false;
}
PyObject* err_type;
PyObject* err_value;
PyObject* err_tb;
// get the exception information and clear error
PyErr_Fetch( &err_type, &err_value, &err_tb );
// get exception's class name
errorClassName = getTypeAsString( err_type );
// get exception's text
if ( nullptr != err_value && err_value != Py_None )
{
errorText = PyObjectToQString( err_value );
}
else
errorText.clear();
// cleanup
Py_XDECREF( err_type );
Py_XDECREF( err_value );
Py_XDECREF( err_tb );
// we are done calling python API, release global interpreter lock
PyGILState_Release( gstate );
return true;
}
QString QgsPythonUtilsImpl::getTypeAsString( PyObject* obj )
{
if ( !obj )
return nullptr;
#if (PY_VERSION_HEX < 0x03000000)
if ( PyClass_Check( obj ) )
{
QgsDebugMsg( "got class" );
return QString( PyString_AsString((( PyClassObject* )obj )->cl_name ) );
}
else
#endif
if ( PyType_Check( obj ) )
{
QgsDebugMsg( "got type" );
return QString((( PyTypeObject* )obj )->tp_name );
}
else
{
QgsDebugMsg( "got object" );
return PyObjectToQString( obj );
}
}
