468 lines
13 KiB
C++
468 lines
13 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2012 NBEE Embedded Systems, Miguel Angel Ajo <miguelangel@nbee.es>
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* Copyright (C) 1992-2018 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @file python_scripting.cpp
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* @brief methods to add scripting capabilities inside pcbnew
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*/
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#include <python_scripting.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fctsys.h>
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#include <eda_base_frame.h>
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#include <common.h>
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#include <gal/color4d.h>
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#include <macros.h>
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#include <pgm_base.h>
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/* init functions defined by swig */
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extern "C" void init_kicad( void );
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extern "C" void init_pcbnew( void );
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#define EXTRA_PYTHON_MODULES 10 // this is the number of python
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// modules that we want to add into the list
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/* python inittab that links module names to module init functions
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* we will rebuild it to include the original python modules plus
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* our own ones
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*/
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struct _inittab* SwigImportInittab;
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static int SwigNumModules = 0;
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static bool wxPythonLoaded = false; // true if the wxPython scripting layer was successfully loaded
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bool IsWxPythonLoaded()
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{
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return wxPythonLoaded;
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}
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/* Add a name + initfuction to our SwigImportInittab */
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static void swigAddModule( const char* name, void (* initfunc)() )
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{
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SwigImportInittab[SwigNumModules].name = (char*) name;
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SwigImportInittab[SwigNumModules].initfunc = initfunc;
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SwigNumModules++;
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SwigImportInittab[SwigNumModules].name = (char*) 0;
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SwigImportInittab[SwigNumModules].initfunc = 0;
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}
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/* Add the builtin python modules */
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static void swigAddBuiltin()
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{
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int i = 0;
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/* discover the length of the pyimport inittab */
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while( PyImport_Inittab[i].name )
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i++;
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/* allocate memory for the python module table */
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SwigImportInittab = (struct _inittab*) malloc(
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sizeof(struct _inittab) * (i + EXTRA_PYTHON_MODULES) );
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/* copy all pre-existing python modules into our newly created table */
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i = 0;
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while( PyImport_Inittab[i].name )
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{
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swigAddModule( PyImport_Inittab[i].name, PyImport_Inittab[i].initfunc );
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i++;
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}
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}
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/* Function swigAddModules
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* adds the internal modules we offer to the python scripting, so they will be
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* available to the scripts we run.
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*
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*/
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static void swigAddModules()
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{
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swigAddModule( "_pcbnew", init_pcbnew );
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// finally it seems better to include all in just one module
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// but in case we needed to include any other modules,
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// it must be done like this:
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// swigAddModule( "_kicad", init_kicad );
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}
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/* Function swigSwitchPythonBuiltin
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* switches python module table to our built one .
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*
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*/
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static void swigSwitchPythonBuiltin()
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{
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PyImport_Inittab = SwigImportInittab;
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}
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/* Function pcbnewInitPythonScripting
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* Initializes all the python environment and publish our interface inside it
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* initializes all the wxpython interface, and returns the python thread control structure
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*
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*/
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PyThreadState* g_PythonMainTState;
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bool pcbnewInitPythonScripting( const char * aUserScriptingPath )
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{
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swigAddBuiltin(); // add builtin functions
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swigAddModules(); // add our own modules
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swigSwitchPythonBuiltin(); // switch the python builtin modules to our new list
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Py_Initialize();
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#ifdef KICAD_SCRIPTING_WXPYTHON
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PyEval_InitThreads();
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#ifndef __WINDOWS__ // import wxversion.py currently not working under winbuilder, and not useful.
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char cmd[1024];
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// Make sure that that the correct version of wxPython is loaded. In systems where there
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// are different versions of wxPython installed this can lead to select wrong wxPython
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// version being selected.
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snprintf( cmd, sizeof(cmd), "import wxversion; wxversion.select('%s')", WXPYTHON_VERSION );
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int retv = PyRun_SimpleString( cmd );
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if( retv != 0 )
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{
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wxLogError( wxT( "Python error %d occurred running string `%s`" ), retv, cmd );
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PyErr_Print();
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Py_Finalize();
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return false;
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}
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#endif // ifndef __WINDOWS__
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// Load the wxPython core API. Imports the wx._core_ module and sets a
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// local pointer to a function table located there. The pointer is used
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// internally by the rest of the API functions.
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if( !wxPyCoreAPI_IMPORT() )
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{
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wxLogError( wxT( "***** Error importing the wxPython API! *****" ) );
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PyErr_Print();
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Py_Finalize();
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return false;
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}
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wxPythonLoaded = true;
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// Save the current Python thread state and release the
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// Global Interpreter Lock.
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g_PythonMainTState = wxPyBeginAllowThreads();
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#endif // ifdef KICAD_SCRIPTING_WXPYTHON
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// load pcbnew inside python, and load all the user plugins, TODO: add system wide plugins
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{
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char loadCmd[1024];
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PyLOCK lock;
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snprintf( loadCmd, sizeof(loadCmd), "import sys, traceback\n"
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"sys.path.append(\".\")\n"
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"import pcbnew\n"
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"pcbnew.LoadPlugins(\"%s\")", aUserScriptingPath );
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PyRun_SimpleString( loadCmd );
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}
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return true;
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}
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/**
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* this function runs a python method from pcbnew module, which returns a string
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* @param aMethodName is the name of the method (like "pcbnew.myfunction" )
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* @param aNames will contains the returned string
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*/
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static void pcbnewRunPythonMethodWithReturnedString( const char* aMethodName, wxString& aNames )
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{
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aNames.Clear();
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PyLOCK lock;
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PyErr_Clear();
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PyObject* builtins = PyImport_ImportModule( "pcbnew" );
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wxASSERT( builtins );
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if( !builtins ) // Something is wrong in pcbnew.py module (incorrect version?)
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return;
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PyObject* globals = PyDict_New();
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PyDict_SetItemString( globals, "pcbnew", builtins );
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Py_DECREF( builtins );
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// Build the python code
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char cmd[1024];
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snprintf( cmd, sizeof(cmd), "result = %s()", aMethodName );
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// Execute the python code and get the returned data
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PyObject* localDict = PyDict_New();
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PyObject* pobj = PyRun_String( cmd, Py_file_input, globals, localDict);
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Py_DECREF( globals );
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if( pobj )
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{
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PyObject* str = PyDict_GetItemString(localDict, "result" );
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const char* str_res = str ? PyString_AsString( str ) : 0;
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aNames = FROM_UTF8( str_res );
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Py_DECREF( pobj );
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}
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Py_DECREF( localDict );
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if( PyErr_Occurred() )
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wxLogMessage(PyErrStringWithTraceback());
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}
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void pcbnewGetUnloadableScriptNames( wxString& aNames )
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{
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pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetUnLoadableWizards", aNames );
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}
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void pcbnewGetScriptsSearchPaths( wxString& aNames )
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{
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pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetWizardsSearchPaths", aNames );
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}
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void pcbnewGetWizardsBackTrace( wxString& aNames )
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{
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pcbnewRunPythonMethodWithReturnedString( "pcbnew.GetWizardsBackTrace", aNames );
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}
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void pcbnewFinishPythonScripting()
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{
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#ifdef KICAD_SCRIPTING_WXPYTHON
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wxPyEndAllowThreads( g_PythonMainTState );
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#endif
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Py_Finalize();
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}
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#if defined( KICAD_SCRIPTING_WXPYTHON )
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void RedirectStdio()
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{
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// This is a helpful little tidbit to help debugging and such. It
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// redirects Python's stdout and stderr to a window that will popup
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// only on demand when something is printed, like a traceback.
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const char* python_redirect =
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"import sys\n"
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"import wx\n"
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"output = wx.PyOnDemandOutputWindow()\n"
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"sys.stderr = output\n";
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PyLOCK lock;
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PyRun_SimpleString( python_redirect );
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}
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wxWindow* CreatePythonShellWindow( wxWindow* parent, const wxString& aFramenameId )
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{
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const char* pcbnew_pyshell =
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"import kicad_pyshell\n"
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"\n"
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"def makeWindow(parent):\n"
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" return kicad_pyshell.makePcbnewShellWindow(parent)\n"
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"\n";
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wxWindow* window = NULL;
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PyObject* result;
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// As always, first grab the GIL
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PyLOCK lock;
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// Now make a dictionary to serve as the global namespace when the code is
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// executed. Put a reference to the builtins module in it.
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PyObject* globals = PyDict_New();
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PyObject* builtins = PyImport_ImportModule( "__builtin__" );
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PyDict_SetItemString( globals, "__builtins__", builtins );
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Py_DECREF( builtins );
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// Execute the code to make the makeWindow function we defined above
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result = PyRun_String( pcbnew_pyshell, Py_file_input, globals, globals );
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// Was there an exception?
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if( !result )
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{
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PyErr_Print();
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return NULL;
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}
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Py_DECREF( result );
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// Now there should be an object named 'makeWindow' in the dictionary that
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// we can grab a pointer to:
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PyObject* func = PyDict_GetItemString( globals, "makeWindow" );
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wxASSERT( PyCallable_Check( func ) );
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// Now build an argument tuple and call the Python function. Notice the
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// use of another wxPython API to take a wxWindows object and build a
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// wxPython object that wraps it.
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PyObject* arg = wxPyMake_wxObject( parent, false );
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wxASSERT( arg != NULL );
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PyObject* tuple = PyTuple_New( 1 );
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PyTuple_SET_ITEM( tuple, 0, arg );
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result = PyEval_CallObject( func, tuple );
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// Was there an exception?
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if( !result )
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PyErr_Print();
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else
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{
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// Otherwise, get the returned window out of Python-land and
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// into C++-ville...
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bool success = wxPyConvertSwigPtr( result, (void**) &window, "wxWindow" );
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(void) success;
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wxASSERT_MSG( success, "Returned object was not a wxWindow!" );
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Py_DECREF( result );
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window->SetName( aFramenameId );
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}
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// Release the python objects we still have
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Py_DECREF( globals );
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Py_DECREF( tuple );
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return window;
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}
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#endif
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wxArrayString PyArrayStringToWx( PyObject* aArrayString )
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{
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wxArrayString ret;
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if( !aArrayString )
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return ret;
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int list_size = PyList_Size( aArrayString );
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for( int n = 0; n < list_size; n++ )
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{
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PyObject* element = PyList_GetItem( aArrayString, n );
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if( element )
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ret.Add( FROM_UTF8( PyString_AsString( element ) ), 1 );
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}
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return ret;
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}
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wxString PyErrStringWithTraceback()
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{
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wxString err;
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if( !PyErr_Occurred() )
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return err;
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PyObject* type;
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PyObject* value;
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PyObject* traceback;
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PyErr_Fetch( &type, &value, &traceback );
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PyObject* tracebackModuleString = PyString_FromString( "traceback" );
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PyObject* tracebackModule = PyImport_Import( tracebackModuleString );
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Py_DECREF( tracebackModuleString );
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PyObject* formatException = PyObject_GetAttrString( tracebackModule,
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"format_exception" );
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Py_DECREF( tracebackModule );
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PyObject* args = Py_BuildValue( "(O,O,O)", type, value, traceback );
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PyObject* result = PyObject_CallObject( formatException, args );
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Py_XDECREF( formatException );
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Py_XDECREF( args );
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Py_XDECREF( type );
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Py_XDECREF( value );
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Py_XDECREF( traceback );
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wxArrayString res = PyArrayStringToWx( result );
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for( unsigned i = 0; i<res.Count(); i++ )
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{
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err += res[i] + wxT( "\n" );
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}
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PyErr_Clear();
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return err;
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}
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/**
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* Find the Python scripting path
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*/
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wxString PyScriptingPath()
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{
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wxString path;
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//TODO should this be a user configurable variable eg KISCRIPT ?
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#if defined( __WXMAC__ )
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path = GetOSXKicadDataDir() + wxT( "/scripting" );
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#else
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path = Pgm().GetExecutablePath() + wxT( "../share/kicad/scripting" );
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#endif
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wxFileName scriptPath( path );
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scriptPath.MakeAbsolute();
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// Convert '\' to '/' in path, because later python script read \n or \r
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// as escaped sequence, and create issues, when calling it by PyRun_SimpleString() method.
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// It can happen on Windows.
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path = scriptPath.GetFullPath();
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path.Replace( '\\', '/' );
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return path;
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}
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wxString PyPluginsPath()
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{
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// Note we are using unix path separator, because window separator sometimes
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// creates issues when passing a command string to a python method by PyRun_SimpleString
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return PyScriptingPath() + '/' + "plugins";
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}
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