556 lines
15 KiB
C++
556 lines
15 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) 1992-2022 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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#undef pid_t
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#include <pybind11/embed.h>
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#include <cstdlib>
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#include <cstring>
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#include <string>
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#include <env_vars.h>
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#include <trace_helpers.h>
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#include <string_utils.h>
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#include <macros.h>
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#include <kiface_ids.h>
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#include <paths.h>
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#include <pgm_base.h>
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#include <wx_filename.h>
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#include <settings/settings_manager.h>
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#include <kiplatform/environment.h>
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#include <wx/app.h>
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#include <wx/regex.h>
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#include <wx/utils.h>
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#include <config.h>
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#include <gestfich.h>
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SCRIPTING::SCRIPTING()
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{
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scriptingSetup();
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pybind11::initialize_interpreter();
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// Save the current Python thread state and release the Global Interpreter Lock.
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m_python_thread_state = PyEval_SaveThread();
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}
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SCRIPTING::~SCRIPTING()
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{
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PyEval_RestoreThread( m_python_thread_state );
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try
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{
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pybind11::finalize_interpreter();
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}
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catch( const std::runtime_error& exc )
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{
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wxLogError( wxT( "Run time error '%s' occurred closing Python scripting" ), exc.what() );
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}
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}
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bool SCRIPTING::IsWxAvailable()
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{
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#ifdef KICAD_SCRIPTING_WXPYTHON
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static bool run = false;
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static bool available = true;
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if( run )
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return available;
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PyLOCK lock;
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using namespace pybind11::literals;
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pybind11::dict locals;
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pybind11::exec( R"(
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wx_version = ""
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try:
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from wx import version
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wx_version = version()
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# Import wx modules that re-initialize wx globals, because they break wxPropertyGrid
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# (and probably some other stuff) if we let this happen after we already have started
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# mutating those globals.
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import wx.adv, wx.html, wx.richtext
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except:
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pass
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)", pybind11::globals(), locals );
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// e.g. "4.0.7 gtk3 (phoenix) wxWidgets 3.0.4"
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wxString version( locals["wx_version"].cast<std::string>().c_str(), wxConvUTF8 );
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int idx = version.Find( wxT( "wxWidgets " ) );
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if( idx == wxNOT_FOUND || version.IsEmpty() )
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{
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wxLogError( wxT( "Could not determine wxPython version. "
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"Python plugins will not be available." ) );
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available = false;
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}
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else
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{
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wxVersionInfo wxVI = wxGetLibraryVersionInfo();
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wxString wxVersion = wxString::Format( wxT( "%d.%d.%d" ),
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wxVI.GetMajor(), wxVI.GetMinor(), wxVI.GetMicro() );
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version = version.Mid( idx + 10 );
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long wxPy_major = 0;
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long wxPy_minor = 0;
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long wxPy_micro = 0;
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long wxPy_rev = 0;
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// Compile a regex to extract the wxPython version
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wxRegEx re( "([0-9]+)\\.([0-9]+)\\.?([0-9]+)?\\.?([0-9]+)?" );
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wxASSERT( re.IsValid() );
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if( re.Matches( version ) )
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{
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wxString v = re.GetMatch( version, 1 );
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if( !v.IsEmpty() )
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v.ToLong( &wxPy_major );
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v = re.GetMatch( version, 2 );
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if( !v.IsEmpty() )
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v.ToLong( &wxPy_minor );
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v = re.GetMatch( version, 3 );
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if( !v.IsEmpty() )
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v.ToLong( &wxPy_micro );
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v = re.GetMatch( version, 4 );
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if( !v.IsEmpty() )
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v.ToLong( &wxPy_rev );
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}
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if( ( wxVI.GetMajor() != wxPy_major ) || ( wxVI.GetMinor() != wxPy_minor ) )
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{
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wxString msg = wxT( "The wxPython library was compiled against wxWidgets %s but KiCad is "
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"using %s. Python plugins will not be available." );
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wxLogError( wxString::Format( msg, version, wxVersion ) );
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available = false;
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}
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}
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run = true;
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return available;
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#else
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return false;
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#endif
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}
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bool SCRIPTING::IsModuleLoaded( std::string& aModule )
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{
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PyLOCK lock;
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using namespace pybind11::literals;
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auto locals = pybind11::dict( "modulename"_a = aModule );
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pybind11::exec( R"(
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import sys
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loaded = False
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if modulename in sys.modules:
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loaded = True
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)", pybind11::globals(), locals );
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return locals["loaded"].cast<bool>();
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}
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bool SCRIPTING::scriptingSetup()
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{
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#if defined( __WINDOWS__ )
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#ifdef _MSC_VER
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// Under vcpkg/msvc, we need to explicitly set the python home or else it'll start consuming
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// system python registry keys and the like instead of the Python distributed with KiCad.
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// We are going to follow the "unix" layout for the msvc/vcpkg distributions so executable
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// files are in the /root/bin path and the Python library files are in the
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// /root/lib/python3(/Lib,/DLLs) path(s).
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wxFileName pyHome;
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pyHome.Assign( Pgm().GetExecutablePath() );
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// @warning Do we want to use our own ExpandEnvVarSubstitutions() here rather than depend
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// on wxFileName::Normalize() to expand environment variables.
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pyHome.Normalize( FN_NORMALIZE_FLAGS | wxPATH_NORM_ENV_VARS );
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// MUST be called before Py_Initialize so it will to create valid default lib paths
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if( !wxGetEnv( wxT( "KICAD_USE_EXTERNAL_PYTHONHOME" ), nullptr ) )
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{
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// Global config flag to ignore PYTHONPATH & PYTHONHOME
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Py_IgnoreEnvironmentFlag = 1;
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// Extra insurance to ignore PYTHONPATH and PYTHONHOME
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wxSetEnv( wxT( "PYTHONPATH" ), wxEmptyString );
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wxSetEnv( wxT( "PYTHONHOME" ), wxEmptyString );
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// Now initialize Python Home via capi
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Py_SetPythonHome( pyHome.GetFullPath().c_str() );
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}
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#else
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// Intended for msys2 but we could probably use the msvc equivalent code too
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// If our python.exe (in kicad/bin) exists, force our kicad python environment
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wxString kipython = FindKicadFile( "python.exe" );
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// we need only the path:
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wxFileName fn( kipython );
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kipython = fn.GetPath();
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// If our python install is existing inside kicad, use it
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// Note: this is useful only when another python version is installed
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if( wxDirExists( kipython ) )
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{
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// clear any PYTHONPATH and PYTHONHOME env var definition: the default
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// values work fine inside Kicad:
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wxSetEnv( wxT( "PYTHONPATH" ), wxEmptyString );
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wxSetEnv( wxT( "PYTHONHOME" ), wxEmptyString );
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// Add our python executable path in first position:
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wxString ppath;
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wxGetEnv( wxT( "PATH" ), &ppath );
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kipython << wxT( ";" ) << ppath;
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wxSetEnv( wxT( "PATH" ), kipython );
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}
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#endif
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#elif defined( __WXMAC__ )
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// Prevent Mac builds from generating JIT versions as this will break
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// the package signing
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wxSetEnv( wxT( "PYTHONDONTWRITEBYTECODE" ), wxT( "1" ) );
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// Add default paths to PYTHONPATH
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wxString pypath;
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// Bundle scripting folder (<kicad.app>/Contents/SharedSupport/scripting)
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pypath += PATHS::GetOSXKicadDataDir() + wxT( "/scripting" );
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// $(KICAD_PATH)/scripting/plugins is always added in kicadplugins.i
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if( wxGetenv( "KICAD_PATH" ) != nullptr )
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{
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pypath += wxT( ":" ) + wxString( wxGetenv("KICAD_PATH") );
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}
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// OSX_BUNDLE_PYTHON_SITE_PACKAGES_DIR is provided via the build system.
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pypath += wxT( ":" ) + Pgm().GetExecutablePath() + wxT( OSX_BUNDLE_PYTHON_SITE_PACKAGES_DIR );
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// Original content of $PYTHONPATH
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if( wxGetenv( wxT( "PYTHONPATH" ) ) != nullptr )
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{
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pypath = wxString( wxGetenv( wxT( "PYTHONPATH" ) ) ) + wxT( ":" ) + pypath;
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}
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// Hack for run from build dir option
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if( wxGetEnv( wxT( "KICAD_RUN_FROM_BUILD_DIR" ), nullptr ) )
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{
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pypath = wxString( wxT( PYTHON_SITE_PACKAGE_PATH ) ) + wxT( "/../:" )
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+ wxT( PYTHON_SITE_PACKAGE_PATH ) + wxT( ":" ) + wxT( PYTHON_DEST );
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}
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// set $PYTHONPATH
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wxSetEnv( wxT( "PYTHONPATH" ), pypath );
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wxString pyhome;
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pyhome += Pgm().GetExecutablePath() +
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wxT( "Contents/Frameworks/Python.framework/Versions/Current" );
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if( wxGetEnv( wxT( "KICAD_RUN_FROM_BUILD_DIR" ), nullptr ) )
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{
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pyhome = wxString( wxT( PYTHON_SITE_PACKAGE_PATH ) ) + wxT( "/../../../" );
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}
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// set $PYTHONHOME
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wxSetEnv( wxT( "PYTHONHOME" ), pyhome );
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#else
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wxString pypath;
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if( wxGetEnv( wxT( "KICAD_RUN_FROM_BUILD_DIR" ), nullptr ) )
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{
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// When running from build dir, python module gets built next to Pcbnew binary
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pypath = Pgm().GetExecutablePath() + wxT( "../pcbnew" );
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}
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else
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{
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// PYTHON_DEST is the scripts install dir as determined by the build system.
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pypath = Pgm().GetExecutablePath() + wxT( "../" PYTHON_DEST );
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}
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if( !wxIsEmpty( wxGetenv( wxT( "PYTHONPATH" ) ) ) )
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pypath = wxString( wxGetenv( wxT( "PYTHONPATH" ) ) ) + wxT( ":" ) + pypath;
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wxSetEnv( wxT( "PYTHONPATH" ), pypath );
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#endif
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wxFileName path( PyPluginsPath( SCRIPTING::PATH_TYPE::USER ) + wxT( "/" ) );
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// Ensure the user plugin path exists, and create it if not.
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// However, if it cannot be created, this is not a fatal error.
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if( !path.DirExists() && !path.Mkdir( wxS_DIR_DEFAULT, wxPATH_MKDIR_FULL ) )
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wxLogError( _( "Could not create user scripting path %s." ), path.GetPath() );
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return true;
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}
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wxString PyEscapeString( const wxString& aSource )
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{
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wxString converted;
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for( wxUniChar c: aSource )
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{
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if( c == '\\' )
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converted += "\\\\";
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else if( c == '\'' )
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converted += "\\\'";
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else if( c == '\"' )
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converted += "\\\"";
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else
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converted += c;
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}
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return converted;
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}
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void UpdatePythonEnvVar( const wxString& aVar, const wxString& aValue )
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{
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char cmd[1024];
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// Ensure the interpreter is initialized before we try to interact with it.
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if( !Py_IsInitialized() )
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return;
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wxLogTrace( traceEnvVars, "UpdatePythonEnvVar: Updating Python variable %s = %s",
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aVar, aValue );
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wxString escapedVar = PyEscapeString( aVar );
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wxString escapedVal = PyEscapeString( aValue );
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snprintf( cmd, sizeof( cmd ),
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"# coding=utf-8\n" // The values could potentially be UTF8.
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"import os\n"
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"os.environ[\"%s\"]=\"%s\"\n",
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TO_UTF8( escapedVar ),
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TO_UTF8( escapedVal ) );
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PyLOCK lock;
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int retv = PyRun_SimpleString( cmd );
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if( retv != 0 )
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wxLogError( "Python error %d running command:\n\n`%s`", retv, cmd );
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}
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wxString PyStringToWx( PyObject* aString )
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{
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wxString ret;
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if( !aString )
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return ret;
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const char* str_res = nullptr;
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PyObject* temp_bytes = PyUnicode_AsEncodedString( aString, "UTF-8", "strict" );
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if( temp_bytes != nullptr )
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{
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str_res = PyBytes_AS_STRING( temp_bytes );
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ret = From_UTF8( str_res );
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Py_DECREF( temp_bytes );
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}
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else
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{
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wxLogMessage( wxS( "cannot encode Unicode python string" ) );
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}
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return ret;
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}
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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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{
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const char* str_res = nullptr;
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PyObject* temp_bytes = PyUnicode_AsEncodedString( element, "UTF-8", "strict" );
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if( temp_bytes != nullptr )
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{
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str_res = PyBytes_AS_STRING( temp_bytes );
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ret.Add( From_UTF8( str_res ), 1 );
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Py_DECREF( temp_bytes );
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}
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else
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{
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wxLogMessage( wxS( "cannot encode Unicode python string" ) );
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}
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}
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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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PyErr_NormalizeException( &type, &value, &traceback );
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if( traceback == nullptr )
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{
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traceback = Py_None;
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Py_INCREF( traceback );
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}
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PyException_SetTraceback( value, traceback );
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PyObject* tracebackModuleString = PyUnicode_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 SCRIPTING::PyScriptingPath( PATH_TYPE aPathType )
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{
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wxString path;
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//@todo This should this be a user configurable variable eg KISCRIPT?
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switch( aPathType )
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{
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case STOCK:
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path = PATHS::GetStockScriptingPath();
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break;
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case USER:
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path = PATHS::GetUserScriptingPath();
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break;
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case THIRDPARTY:
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{
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const ENV_VAR_MAP& env = Pgm().GetLocalEnvVariables();
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if( std::optional<wxString> v = ENV_VAR::GetVersionedEnvVarValue( env,
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wxT( "3RD_PARTY" ) ) )
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{
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path = *v;
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}
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else
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{
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path = PATHS::GetDefault3rdPartyPath();
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}
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break;
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}
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}
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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.
|
|
// It can happen on Windows.
|
|
path = scriptPath.GetFullPath();
|
|
path.Replace( '\\', '/' );
|
|
|
|
return path;
|
|
}
|
|
|
|
|
|
wxString SCRIPTING::PyPluginsPath( PATH_TYPE aPathType )
|
|
{
|
|
// Note we are using unix path separator, because window separator sometimes
|
|
// creates issues when passing a command string to a python method by PyRun_SimpleString
|
|
return PyScriptingPath( aPathType ) + '/' + "plugins";
|
|
}
|