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+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 NBEE Embedded Systems, Miguel Angel Ajo <miguelangel@nbee.es>
+ * Copyright (C) 1992-2015 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 <python_scripting.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fctsys.h>
+#include <wxstruct.h>
+#include <common.h>
+#include <colors.h>
+#include <macros.h>
+
+/* init functions defined by swig */
+
+extern "C" void init_kicad( void );
+
+extern "C" void init_pcbnew( void );
+
+#define EXTRA_PYTHON_MODULES 10 // this is the number of python
+ // modules that we want to add into the list
+
+
+/* python inittab that links module names to module init functions
+ * we will rebuild it to include the original python modules plus
+ * our own ones
+ */
+
+struct _inittab* SwigImportInittab;
+static int SwigNumModules = 0;
+
+static bool wxPythonLoaded = false; // true if the wxPython scripting layer was successfully loaded
+
+bool IsWxPythonLoaded()
+{
+ return wxPythonLoaded;
+}
+
+
+/* Add a name + initfuction to our SwigImportInittab */
+
+static void swigAddModule( const char* name, void (* initfunc)() )
+{
+ SwigImportInittab[SwigNumModules].name = (char*) name;
+ SwigImportInittab[SwigNumModules].initfunc = initfunc;
+ SwigNumModules++;
+ SwigImportInittab[SwigNumModules].name = (char*) 0;
+ SwigImportInittab[SwigNumModules].initfunc = 0;
+}
+
+
+/* Add the builtin python modules */
+
+static void swigAddBuiltin()
+{
+ int i = 0;
+
+ /* discover the length of the pyimport inittab */
+ while( PyImport_Inittab[i].name )
+ i++;
+
+ /* allocate memory for the python module table */
+ SwigImportInittab = (struct _inittab*) malloc(
+ sizeof(struct _inittab) * (i + EXTRA_PYTHON_MODULES) );
+
+ /* copy all pre-existing python modules into our newly created table */
+ i = 0;
+
+ while( PyImport_Inittab[i].name )
+ {
+ swigAddModule( PyImport_Inittab[i].name, PyImport_Inittab[i].initfunc );
+ i++;
+ }
+}
+
+
+/* Function swigAddModules
+ * adds the internal modules we offer to the python scripting, so they will be
+ * available to the scripts we run.
+ *
+ */
+
+static void swigAddModules()
+{
+ swigAddModule( "_pcbnew", init_pcbnew );
+
+ // finally it seems better to include all in just one module
+ // but in case we needed to include any other modules,
+ // it must be done like this:
+ // swigAddModule( "_kicad", init_kicad );
+}
+
+
+/* Function swigSwitchPythonBuiltin
+ * switches python module table to our built one .
+ *
+ */
+
+static void swigSwitchPythonBuiltin()
+{
+ PyImport_Inittab = SwigImportInittab;
+}
+
+
+/* Function pcbnewInitPythonScripting
+ * Initializes all the python environment and publish our interface inside it
+ * initializes all the wxpython interface, and returns the python thread control structure
+ *
+ */
+
+PyThreadState* g_PythonMainTState;
+
+bool pcbnewInitPythonScripting( const char * aUserPluginsPath )
+{
+ swigAddBuiltin(); // add builtin functions
+ swigAddModules(); // add our own modules
+ swigSwitchPythonBuiltin(); // switch the python builtin modules to our new list
+
+ Py_Initialize();
+
+#ifdef KICAD_SCRIPTING_WXPYTHON
+ PyEval_InitThreads();
+
+#ifndef __WINDOWS__ // import wxversion.py currently not working under winbuilder, and not useful.
+ char cmd[1024];
+ // Make sure that that the correct version of wxPython is loaded. In systems where there
+ // are different versions of wxPython installed this can lead to select wrong wxPython
+ // version being selected.
+ snprintf( cmd, sizeof(cmd), "import wxversion; wxversion.select('%s')", WXPYTHON_VERSION );
+
+ int retv = PyRun_SimpleString( cmd );
+
+ if( retv != 0 )
+ {
+ wxLogError( wxT( "Python error %d occurred running string `%s`" ), retv, cmd );
+ PyErr_Print();
+ Py_Finalize();
+ return false;
+ }
+#endif // ifndef __WINDOWS__
+
+ // Load the wxPython core API. Imports the wx._core_ module and sets a
+ // local pointer to a function table located there. The pointer is used
+ // internally by the rest of the API functions.
+ if( !wxPyCoreAPI_IMPORT() )
+ {
+ wxLogError( wxT( "***** Error importing the wxPython API! *****" ) );
+ PyErr_Print();
+ Py_Finalize();
+ return false;
+ }
+
+ wxPythonLoaded = true;
+
+ // Save the current Python thread state and release the
+ // Global Interpreter Lock.
+
+ g_PythonMainTState = wxPyBeginAllowThreads();
+#endif // ifdef KICAD_SCRIPTING_WXPYTHON
+
+ // load pcbnew inside python, and load all the user plugins, TODO: add system wide plugins
+ {
+ char cmd[1024];
+ PyLOCK lock;
+ snprintf( cmd, sizeof(cmd), "import sys, traceback\n"
+ "sys.path.append(\".\")\n"
+ "import pcbnew\n"
+ "pcbnew.LoadPlugins(\"%s\")", aUserPluginsPath );
+ PyRun_SimpleString( cmd );
+ }
+
+ return true;
+}
+
+
+void pcbnewFinishPythonScripting()
+{
+#ifdef KICAD_SCRIPTING_WXPYTHON
+ wxPyEndAllowThreads( g_PythonMainTState );
+#endif
+ Py_Finalize();
+}
+
+
+#if defined( KICAD_SCRIPTING_WXPYTHON )
+
+void RedirectStdio()
+{
+ // This is a helpful little tidbit to help debugging and such. It
+ // redirects Python's stdout and stderr to a window that will popup
+ // only on demand when something is printed, like a traceback.
+ const char* python_redirect =
+ "import sys\n"
+ "import wx\n"
+ "output = wx.PyOnDemandOutputWindow()\n"
+ "sys.stderr = output\n";
+
+ PyLOCK lock;
+
+ PyRun_SimpleString( python_redirect );
+}
+
+
+wxWindow* CreatePythonShellWindow( wxWindow* parent )
+{
+ const char* pycrust_panel =
+ "import wx\n"
+ "from wx.py import shell, version\n"
+ "\n"
+ "intro = \"PyCrust %s - KiCAD Python Shell\" % version.VERSION\n"
+ "\n"
+ "def makeWindow(parent):\n"
+ " pycrust = shell.Shell(parent, -1, introText=intro)\n"
+ " return pycrust\n"
+ "\n";
+
+
+ wxWindow* window = NULL;
+ PyObject* result;
+
+ // As always, first grab the GIL
+ PyLOCK lock;
+
+ // Now make a dictionary to serve as the global namespace when the code is
+ // executed. Put a reference to the builtins module in it.
+
+ PyObject* globals = PyDict_New();
+ PyObject* builtins = PyImport_ImportModule( "__builtin__" );
+
+ PyDict_SetItemString( globals, "__builtins__", builtins );
+ Py_DECREF( builtins );
+
+ // Execute the code to make the makeWindow function we defined above
+ result = PyRun_String( pycrust_panel, Py_file_input, globals, globals );
+
+ // Was there an exception?
+ if( !result )
+ {
+ PyErr_Print();
+ return NULL;
+ }
+
+ Py_DECREF( result );
+
+ // Now there should be an object named 'makeWindow' in the dictionary that
+ // we can grab a pointer to:
+ PyObject* func = PyDict_GetItemString( globals, "makeWindow" );
+ wxASSERT( PyCallable_Check( func ) );
+
+ // Now build an argument tuple and call the Python function. Notice the
+ // use of another wxPython API to take a wxWindows object and build a
+ // wxPython object that wraps it.
+
+ PyObject* arg = wxPyMake_wxObject( parent, false );
+ wxASSERT( arg != NULL );
+
+ PyObject* tuple = PyTuple_New( 1 );
+ PyTuple_SET_ITEM( tuple, 0, arg );
+
+ result = PyEval_CallObject( func, tuple );
+
+ // Was there an exception?
+ if( !result )
+ PyErr_Print();
+ else
+ {
+ // Otherwise, get the returned window out of Python-land and
+ // into C++-ville...
+ bool success = wxPyConvertSwigPtr( result, (void**) &window, _T( "wxWindow" ) );
+ (void) success;
+
+ wxASSERT_MSG( success, _T( "Returned object was not a wxWindow!" ) );
+ Py_DECREF( result );
+ }
+
+ // Release the python objects we still have
+ Py_DECREF( globals );
+ Py_DECREF( tuple );
+
+ return window;
+}
+
+
+#endif
+
+wxArrayString PyArrayStringToWx( PyObject* aArrayString )
+{
+ wxArrayString ret;
+
+ int list_size = PyList_Size( aArrayString );
+
+ for( int n = 0; n<list_size; n++ )
+ {
+ PyObject* element = PyList_GetItem( aArrayString, n );
+
+ ret.Add( FROM_UTF8( PyString_AsString( element ) ), 1 );
+ }
+
+ return ret;
+}
+
+
+wxString PyErrStringWithTraceback()
+{
+ wxString err;
+
+ if( !PyErr_Occurred() )
+ return err;
+
+ PyObject* type;
+ PyObject* value;
+ PyObject* traceback;
+
+ PyErr_Fetch( &type, &value, &traceback );
+
+ PyObject* tracebackModuleString = PyString_FromString( (char*) "traceback" );
+ PyObject* tracebackModule = PyImport_Import( tracebackModuleString );
+
+
+ PyObject* formatException = PyObject_GetAttrString( tracebackModule,
+ (char*) "format_exception" );
+ PyObject* args = Py_BuildValue( "(O,O,O)", type, value, traceback );
+
+ PyObject* result = PyObject_CallObject( formatException, args );
+
+ Py_DECREF( args );
+
+ wxArrayString res = PyArrayStringToWx( result );
+
+ for( unsigned i = 0; i<res.Count(); i++ )
+ {
+ err += res[i] + wxT( "\n" );
+ }
+
+ PyErr_Clear();
+
+ return err;
+}