Move pcbnew swig

Separates the python scripts into those using swig and those needed for
other scripting

pcbnew/python/scripting/pcbnew_scripting.cpp

@@ -0,0 +1,157 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 NBEE Embedded Systems, Miguel Angel Ajo <[email protected]>
+ * Copyright (C) 1992-2019 KiCad Developers, see AUTHORS.txt for contributors.
+ *
+ * This program 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 2
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+/**
+ * @file python_scripting.cpp
+ * @brief methods to add scripting capabilities inside pcbnew
+ */
+
+#include "../../scripting/python_scripting.h"
+
+#include <cstdlib>
+#include <cstring>
+#include <Python.h>
+#include <sstream>
+
+#include <eda_base_frame.h>
+#include <gal/color4d.h>
+#include <trace_helpers.h>
+#include <kicad_string.h>
+
+#include <paths.h>
+#include <pgm_base.h>
+#include <settings/settings_manager.h>
+
+#include <kiplatform/environment.h>
+
+#include <wx/app.h>
+
+#include <config.h>
+
+
+/**
+ * Run a python method from the pcbnew module.
+ *
+ * @param aMethodName is the name of the method (like "pcbnew.myfunction" )
+ * @param aNames will contain the returned string
+ */
+static void pcbnewRunPythonMethodWithReturnedString( const char* aMethodName, wxString& aNames )
+{
+    aNames.Clear();
+
+    PyLOCK      lock;
+    PyErr_Clear();
+
+    PyObject* builtins = PyImport_ImportModule( "pcbnew" );
+    wxASSERT( builtins );
+
+    if( !builtins ) // Something is wrong in pcbnew.py module (incorrect version?)
+        return;
+
+    PyObject* globals = PyDict_New();
+    PyDict_SetItemString( globals, "pcbnew", builtins );
+    Py_DECREF( builtins );
+
+    // Build the python code
+    char cmd[1024];
+    snprintf( cmd, sizeof(cmd), "result = %s()", aMethodName );
+
+    // Execute the python code and get the returned data
+    PyObject* localDict = PyDict_New();
+    PyObject* pobj = PyRun_String( cmd,  Py_file_input, globals, localDict);
+    Py_DECREF( globals );
+
+    if( pobj )
+    {
+        PyObject* str = PyDict_GetItemString(localDict, "result" );
+        const char* str_res = NULL;
+
+        if(str)
+        {
+            PyObject* temp_bytes = PyUnicode_AsEncodedString( str, "UTF-8", "strict" );
+
+            if( temp_bytes != NULL )
+            {
+                str_res = PyBytes_AS_STRING( temp_bytes );
+                aNames = FROM_UTF8( str_res );
+                Py_DECREF( temp_bytes );
+            }
+            else
+            {
+                wxLogMessage( "cannot encode unicode python string" );
+            }
+        }
+        else
+        {
+            aNames = wxString();
+        }
+
+        Py_DECREF( pobj );
+    }
+
+    Py_DECREF( localDict );
+
+    if( PyErr_Occurred() )
+        wxLogMessage( PyErrStringWithTraceback() );
+}
+
+
+void pcbnewGetUnloadableScriptNames( wxString& aNames )
+{
+    pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetUnLoadableWizards", aNames );
+}
+
+
+void pcbnewGetScriptsSearchPaths( wxString& aNames )
+{
+    pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetWizardsSearchPaths", aNames );
+}
+
+
+void pcbnewGetWizardsBackTrace( wxString& aTrace )
+{
+    pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetWizardsBackTrace", aTrace );
+
+    // Filter message before displaying them
+    // a trace starts by "Traceback" and is followed by 2 useless lines
+    // for our purpose
+    wxArrayString traces;
+    wxStringSplit( aTrace, traces, '\n' );
+
+    // Build the filtered message (remove useless lines)
+    aTrace.Clear();
+
+    for( unsigned ii = 0; ii < traces.Count(); ++ii )
+    {
+        if( traces[ii].Contains( "Traceback" ) )
+        {
+            ii += 2; // Skip this line and next lines which are related to pcbnew.py module
+
+            if( !aTrace.IsEmpty() ) // Add separator for the next trace block
+                aTrace << "\n**********************************\n";
+        }
+        else
+            aTrace += traces[ii] + "\n";
+    }
+}