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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Johnny Jacob <jjohnny@novell.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <sys/types.h>
#include <string.h>
#include <Python.h>
#include "python-plugin-loader.h"
#define d(x)
static gpointer epp_parent_class;
typedef struct _EPluginPythonPrivate {
PyObject *pModule;
PyObject *pClass;
PyObject *pFunc;
PyObject *pDict;
GHashTable *methods;
} EPluginPythonPrivate;
#define epp ((EPluginPython *)ep)
gpointer load_plugin_type_register_function (gpointer a, gpointer b);
static gchar *
get_xml_prop(xmlNodePtr node, const gchar *id)
{
gchar *p = xmlGetProp(node, id);
gchar *out = NULL;
if (p) {
out = g_strdup(p);
xmlFree(p);
}
return out;
}
static gpointer
epp_invoke(EPlugin *ep, const gchar *name, gpointer data)
{
EPluginPythonPrivate *p = epp->priv;
PyObject *pModuleName, *pFunc;
PyObject *pInstance, *pValue = NULL;
/* we need to do this every time since we may be called from any thread for some uses */
Py_Initialize();
if (p->pModule == NULL) {
pModuleName = PyString_FromString(epp->module_name);
PyRun_SimpleString(g_strdup_printf ("import sys ; sys.path.insert(0, '%s')", epp->location));
p->pModule = PyImport_Import(pModuleName);
Py_DECREF(pModuleName); //Free
if (p->pModule == NULL) {
PyErr_Print();
g_warning("can't load python module '%s'", epp->location);
return NULL;
}
p->pDict = PyModule_GetDict(p->pModule);
if (epp->pClass) {
p->pClass = PyDict_GetItemString(p->pDict, epp->pClass);
}
}
if (p->pClass) {
if (PyCallable_Check(p->pClass))
pInstance = PyObject_CallObject(p->pClass, NULL);
pValue = PyObject_CallMethod(pInstance, name, NULL);
} else {
pFunc = PyDict_GetItemString(p->pDict, name);
if (pFunc && PyCallable_Check(pFunc))
pValue = PyObject_CallObject(pFunc, NULL);
else
PyErr_Print();
}
if (pValue) {
d(printf("%s(%d):%s: Result of call: %ld \n", __FILE__, __LINE__, __PRETTY_FUNCTION__, PyInt_AsLong(pValue)));
Py_DECREF(pValue);
/* Fixme */
return NULL;
} else
return NULL;
}
static int
epp_construct(EPlugin *ep, xmlNodePtr root)
{
if (((EPluginClass *)epp_parent_class)->construct(ep, root) == -1)
return -1;
epp->location = get_xml_prop(root, "location");
epp->module_name = get_xml_prop (root, "module_name");
epp->pClass = get_xml_prop(root, "pClass");
if (epp->location == NULL)
return -1;
return 0;
}
static void
epp_finalise(GObject *o)
{
EPlugin *ep = (EPlugin *)o;
EPluginPythonPrivate *p = epp->priv;
g_free(epp->location);
g_free(epp->module_name);
g_free(epp->pClass);
g_hash_table_destroy(p->methods);
g_free(epp->priv);
((GObjectClass *)epp_parent_class)->finalize(o);
}
static void
epp_class_init(EPluginClass *klass)
{
((GObjectClass *)klass)->finalize = epp_finalise;
klass->construct = epp_construct;
klass->invoke = epp_invoke;
klass->type = "python";
}
static void
epp_init(GObject *o)
{
EPlugin *ep = (EPlugin *)o;
epp->priv = g_malloc0(sizeof(*epp->priv));
epp->priv->methods = g_hash_table_new_full(
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) NULL);
}
gpointer
load_plugin_type_register_function (gpointer a, gpointer b)
{
static GType type = 0;
if (!type) {
static const GTypeInfo info = {
sizeof(EPluginPythonClass), NULL, NULL, (GClassInitFunc) epp_class_init, NULL, NULL,
sizeof(EPluginPython), 0, (GInstanceInitFunc) epp_init,
};
epp_parent_class = g_type_class_ref(e_plugin_get_type());
type = g_type_register_static(e_plugin_get_type(), "EPluginPython", &info, 0);
e_plugin_register_type (type);
d(printf("\nType EPluginPython registered from the python-plugin-loader\n"));
Py_Initialize(); //TODO : Does this mean i can cache the instance of pyobjects ?
}
return GUINT_TO_POINTER(type);
}
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