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/*
py/pyext - python external object for PD and MaxMSP
Copyright (c) 2002 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
V py::lib_setup()
{
post("");
post("py/pyext %s - python script objects, (C)2002 Thomas Grill",PY__VERSION);
post("");
FLEXT_SETUP(pyobj);
FLEXT_SETUP(pyext);
pyref = 0;
}
FLEXT_LIB_SETUP(py,py::lib_setup)
PyInterpreterState *py::pystate = NULL;
I py::pyref = 0;
PyObject *py::module_obj = NULL;
PyObject *py::module_dict = NULL;
py::py():
module(NULL),
detach(false),shouldexit(false),thrcount(0),
clk(NULL),stoptick(0)
{
Lock();
// under Max/MSP: doesn't survive next line.....
if(!(pyref++)) {
Py_Initialize();
#ifdef FLEXT_THREADS
PyEval_InitThreads();
pystate = PyThreadState_Get()->interp;
#endif
// register/initialize pyext module only once!
module_obj = Py_InitModule(PYEXT_MODULE, func_tbl);
module_dict = PyModule_GetDict(module_obj);
PyModule_AddStringConstant(module_obj,"__doc__",(C *)py_doc);
#ifdef FLEXT_THREADS
pythrmain = PyEval_SaveThread();
#endif
}
else {
PY_LOCK
Py_INCREF(module_obj);
Py_INCREF(module_dict);
PY_UNLOCK
}
Unlock();
clk = clock_new(this,(t_method)tick);
}
py::~py()
{
if(thrcount) {
shouldexit = true;
// Wait for a certain time
for(int i = 0; i < (PY_STOP_WAIT/PY_STOP_TICK) && thrcount; ++i) Sleep((F)(PY_STOP_TICK/1000.));
// Wait forever
post("%s - Waiting for thread termination!",thisName());
while(thrcount) Sleep(0.2f);
post("%s - Okay, all threads have terminated",thisName());
}
/*
// don't unregister
Lock();
if(!(--pyref)) {
Py_DECREF(module_obj);
module_obj = NULL;
Py_DECREF(module_dict);
module_dict = NULL;
Py_XDECREF(module);
// delete modules; modules = NULL;
PyEval_AcquireThread(pythrmain);
PyThreadState *new_state = PyThreadState_New(pystate); // must have lock
PyThreadState *prev_state = PyThreadState_Swap(new_state);
Py_Finalize();
}
Unlock();
*/
if(clk) clock_free(clk);
}
V py::m_doc()
{
if(dict) {
PyObject *docf = PyDict_GetItemString(dict,"__doc__"); // borrowed!!!
if(docf && PyString_Check(docf)) {
post("");
post(PyString_AsString(docf));
}
}
}
V py::SetArgs(I argc,const t_atom *argv)
{
// script arguments
C **sargv = new C *[argc+1];
for(int i = 0; i <= argc; ++i) {
sargv[i] = new C[256];
if(!i)
strcpy(sargv[i],thisName());
else
GetAString(argv[i-1],sargv[i],255);
}
// the arguments to the module are only recognized once! (at first use in a patcher)
PySys_SetArgv(argc+1,sargv);
for(int j = 0; j <= argc; ++j) delete[] sargv[j];
delete[] sargv;
}
V py::ImportModule(const C *name)
{
if(!name) return;
module = PyImport_ImportModule((C *)name);
if (!module) {
PyErr_Print();
dict = NULL;
}
else
dict = PyModule_GetDict(module); // borrowed
}
V py::ReloadModule()
{
if(module) {
PyObject *newmod = PyImport_ReloadModule(module);
if(!newmod) {
PyErr_Print();
// old module still exists?!
// dict = NULL;
}
else {
Py_XDECREF(module);
module = newmod;
dict = PyModule_GetDict(module); // borrowed
}
}
else
post("%s - No module to reload",thisName());
}
V py::GetModulePath(const C *mod,C *dir,I len)
{
#if FLEXT_SYS == FLEXT_SYS_PD
// uarghh... pd doesn't show it's path for extra modules
C *name;
I fd = open_via_path("",mod,".py",dir,&name,len,0);
if(fd > 0) close(fd);
else name = NULL;
// if dir is current working directory... name points to dir
if(dir == name) strcpy(dir,".");
#elif FLEXT_SYS == FLEXT_SYS_MAX
// how do i get the path in Max/MSP?
#else
*dir = 0;
#endif
}
V py::AddToPath(const C *dir)
{
if(dir && *dir) {
PyObject *pobj = PySys_GetObject("path");
if(pobj && PyList_Check(pobj)) {
int i,n = PyList_Size(pobj);
for(i = 0; i < n; ++i) {
PyObject *pt = PyList_GetItem(pobj,i);
if(PyString_Check(pt) && !strcmp(dir,PyString_AsString(pt))) break;
}
if(i == n) { // string is not yet existent in path
PyObject *ps = PyString_FromString(dir);
PyList_Append(pobj,ps);
}
}
PySys_SetObject("path",pobj);
}
}
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