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/*
py/pyext - python script object for PD and Max/MSP
Copyright (c)2002-2004 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"
class pyobj:
public py
{
FLEXT_HEADER_S(pyobj,py,Setup)
public:
pyobj(I argc,const t_atom *argv);
~pyobj();
protected:
BL m_method_(I n,const t_symbol *s,I argc,const t_atom *argv);
BL work(const t_symbol *s,I argc,const t_atom *argv);
V m_bang() { callwork(sym_bang,0,NULL); }
V m_reload();
V m_reload_(I argc,const t_atom *argv);
V m_set(I argc,const t_atom *argv);
V m_dir_() { m__dir(function); }
V m_doc_() { m__doc(function); }
virtual V m_help();
// methods for python arguments
V callwork(const t_symbol *s,I argc,const t_atom *argv);
V m_py_list(I argc,const t_atom *argv) { callwork(sym_list,argc,argv); }
V m_py_float(I argc,const t_atom *argv) { callwork(sym_float,argc,argv); }
V m_py_int(I argc,const t_atom *argv) { callwork(sym_int,argc,argv); }
V m_py_any(const t_symbol *s,I argc,const t_atom *argv) { callwork(s,argc,argv); }
const t_symbol *funname;
PyObject *function;
virtual V Reload();
V SetFunction(const C *func);
V ResetFunction();
private:
static void Setup(t_classid c);
FLEXT_CALLBACK(m_bang)
FLEXT_CALLBACK(m_reload)
FLEXT_CALLBACK_V(m_reload_)
FLEXT_CALLBACK_V(m_set)
FLEXT_CALLBACK(m_dir_)
FLEXT_CALLBACK(m_doc_)
FLEXT_CALLBACK_V(m_py_float)
FLEXT_CALLBACK_V(m_py_list)
FLEXT_CALLBACK_V(m_py_int)
FLEXT_CALLBACK_A(m_py_any)
#ifdef FLEXT_THREADS
FLEXT_THREAD_A(work)
#else
FLEXT_CALLBACK_A(work)
#endif
};
FLEXT_LIB_V("py",pyobj)
void pyobj::Setup(t_classid c)
{
FLEXT_CADDBANG(c,0,m_bang);
FLEXT_CADDMETHOD_(c,0,"reload",m_reload_);
FLEXT_CADDMETHOD_(c,0,"reload.",m_reload);
FLEXT_CADDMETHOD_(c,0,"set",m_set);
FLEXT_CADDMETHOD_(c,0,"doc",m_doc);
FLEXT_CADDMETHOD_(c,0,"doc+",m_doc_);
#ifdef FLEXT_THREADS
FLEXT_CADDATTR_VAR1(c,"detach",detach);
FLEXT_CADDMETHOD_(c,0,"stop",m_stop);
#endif
FLEXT_CADDMETHOD_(c,0,"dir",m_dir);
FLEXT_CADDMETHOD_(c,0,"dir+",m_dir_);
FLEXT_CADDMETHOD_(c,1,"float",m_py_float);
FLEXT_CADDMETHOD_(c,1,"int",m_py_int);
FLEXT_CADDMETHOD(c,1,m_py_list);
FLEXT_CADDMETHOD(c,1,m_py_any);
FLEXT_CADDATTR_VAR1(c,"respond",respond);
}
pyobj::pyobj(I argc,const t_atom *argv):
function(NULL),funname(NULL)
{
PY_LOCK
AddInAnything(2);
AddOutAnything();
if(argc > 2)
SetArgs(argc-2,argv+2);
else
SetArgs(0,NULL);
// init script module
if(argc >= 1) {
if(!IsString(argv[0]))
post("%s - script name argument is invalid",thisName());
else {
C dir[1024];
GetModulePath(GetString(argv[0]),dir,sizeof(dir));
// set script path
AddToPath(dir);
#if FLEXT_SYS == FLEXT_SYS_PD
// add dir of current patch to path
AddToPath(GetString(canvas_getdir(thisCanvas())));
// add current dir to path
AddToPath(GetString(canvas_getcurrentdir()));
#elif FLEXT_SYS == FLEXT_SYS_MAX
#if FLEXT_OS == FLEXT_OS_WIN
#else
short path = patcher_myvol(thisCanvas());
path_topathname(path,NULL,dir);
AddToPath(dir);
#endif
#else
#pragma message("Adding current dir to path is not implemented")
#endif
ImportModule(GetString(argv[0]));
}
}
Register("_py");
if(argc >= 2) {
// set function name
if(!IsString(argv[1]))
post("%s - function name argument is invalid",thisName());
else {
// Set function
SetFunction(GetString(argv[1]));
}
}
PY_UNLOCK
}
pyobj::~pyobj()
{
PY_LOCK
Unregister("_py");
PY_UNLOCK
}
BL pyobj::m_method_(I n,const t_symbol *s,I argc,const t_atom *argv)
{
if(n == 1)
post("%s - no method for type %s",thisName(),GetString(s));
return false;
}
V pyobj::m_reload()
{
PY_LOCK
Unregister("_py");
ReloadModule();
Reregister("_py");
Register("_py");
SetFunction(funname?GetString(funname):NULL);
PY_UNLOCK
}
V pyobj::m_reload_(I argc,const t_atom *argv)
{
PY_LOCK
SetArgs(argc,argv);
PY_UNLOCK
m_reload();
}
V pyobj::m_set(I argc,const t_atom *argv)
{
PY_LOCK
I ix = 0;
if(argc >= 2) {
if(!IsString(argv[ix])) {
post("%s - script name is not valid",thisName());
return;
}
const C *sn = GetString(argv[ix]);
if(!module || !strcmp(sn,PyModule_GetName(module))) {
ImportModule(sn);
Register("_py");
}
++ix;
}
if(!IsString(argv[ix]))
post("%s - function name is not valid",thisName());
else
SetFunction(GetString(argv[ix]));
PY_UNLOCK
}
V pyobj::m_help()
{
post("");
post("%s %s - python script object, (C)2002-2004 Thomas Grill",thisName(),PY__VERSION);
#ifdef FLEXT_DEBUG
post("DEBUG VERSION, compiled on " __DATE__ " " __TIME__);
#endif
post("Arguments: %s [script name] [function name] {args...}",thisName());
post("Inlet 1:messages to control the py object");
post(" 2:call python function with message as argument(s)");
post("Outlet: 1:return values from python function");
post("Methods:");
post("\thelp: shows this help");
post("\tbang: call script without arguments");
post("\tset [script name] [function name]: set (script and) function name");
post("\treload {args...}: reload python script");
post("\treload. : reload with former arguments");
post("\tdoc: display module doc string");
post("\tdoc+: display function doc string");
post("\tdir: dump module dictionary");
post("\tdir+: dump function dictionary");
#ifdef FLEXT_THREADS
post("\tdetach 0/1: detach threads");
post("\tstop {wait time (ms)}: stop threads");
#endif
post("");
}
V pyobj::ResetFunction()
{
if(!module || !dict)
{
post("%s - No module loaded",thisName());
function = NULL;
return;
}
function = funname?PyDict_GetItemString(dict,(C *)GetString(funname)):NULL; // borrowed!!!
if(!function) {
PyErr_Clear();
if(funname) post("%s - Function %s could not be found",thisName(),GetString(funname));
}
else if(!PyFunction_Check(function)) {
post("%s - Object %s is not a function",thisName(),GetString(funname));
function = NULL;
}
}
V pyobj::SetFunction(const C *func)
{
if(func) {
funname = MakeSymbol(func);
ResetFunction();
}
else
function = NULL,funname = NULL;
}
V pyobj::Reload()
{
ResetFunction();
}
BL pyobj::work(const t_symbol *s,I argc,const t_atom *argv)
{
AtomList *rargs = NULL;
BL ret;
++thrcount;
PY_LOCK
if(function) {
PyObject *pArgs = MakePyArgs(s,argc,argv);
PyObject *pValue = PyObject_CallObject(function, pArgs);
rargs = GetPyArgs(pValue);
if(!rargs) PyErr_Print();
Py_XDECREF(pArgs);
Py_XDECREF(pValue);
ret = true;
}
else {
post("%s: no function defined",thisName());
ret = false;
}
PY_UNLOCK
--thrcount;
if(rargs) {
// call to outlet _outside_ the Mutex lock!
// otherwise (if not detached) deadlock will occur
ToOutList(0,*rargs);
delete rargs;
}
return ret;
}
V pyobj::callwork(const t_symbol *s,I argc,const t_atom *argv)
{
BL ret = false;
if(detach) {
if(shouldexit)
post("%s - New threads can't be launched now!",thisName());
else {
ret = FLEXT_CALLMETHOD_A(work,s,argc,argv);
if(!ret) post("%s - Failed to launch thread!",thisName());
}
}
else
ret = work(s,argc,argv);
Respond(ret);
}
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