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/*
* Copyright (C) 2006-2015 Juan Pablo Ugarte.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Authors:
* Juan Pablo Ugarte <juanpablougarte@gmail.com>
*/
#include <config.h>
#include <Python.h>
#include <pygobject.h>
#include <gladeui/glade.h>
#if PY_MAJOR_VERSION >= 3
#define WCHAR(str) L##str
#define PY_STRING(str) WCHAR(str)
#define STRING_FROM_PYSTR(pstr) PyUnicode_AsUTF8 (pstr)
#else
/* include bytesobject.h to map PyBytes_* to PyString_* */
#include <bytesobject.h>
#define PY_STRING(str) str
#define STRING_FROM_PYSTR(pstr) PyBytes_AsString (pstr)
#endif
static void
python_init (void)
{
if (Py_IsInitialized ())
return;
Py_InitializeEx (0);
/* if argc is 0 an empty string is prepended to sys.path */
PySys_SetArgvEx (0, NULL, 0);
}
static void
glade_python_init_pygobject_check (gint req_major, gint req_minor, gint req_micro)
{
PyObject *gi, *gobject;
/* import gobject */
pygobject_init (req_major, req_minor, req_micro);
if (PyErr_Occurred ())
{
g_warning ("Error initializing Python interpreter: could not "
"import pygobject");
return;
}
gi = PyImport_ImportModule ("gi");
if (gi == NULL)
{
g_warning ("Error initializing Python interpreter: could not "
"import gi");
return;
}
gobject = PyImport_ImportModule ("gi.repository.GObject");
if (gobject == NULL)
{
g_warning ("Error initializing Python interpreter: could not "
"import gobject");
return;
}
}
static gboolean
glade_python_setup ()
{
GString *command;
const gchar *module_path;
const GList *paths;
gchar **tokens = NULL;
Py_SetProgramName (PY_STRING (PACKAGE_NAME));
/* Initialize the Python interpreter */
python_init ();
/* Check and init pygobject */
PyErr_Clear ();
glade_python_init_pygobject_check (PYGOBJECT_REQUIRED_MAJOR,
PYGOBJECT_REQUIRED_MINOR,
PYGOBJECT_REQUIRED_MICRO);
if (PyErr_Occurred ())
{
PyObject *ptype, *pvalue, *ptraceback, *pstr;
const char *pvalue_char = "";
PyErr_Fetch (&ptype, &pvalue, &ptraceback);
PyErr_NormalizeException (&ptype, &pvalue, &ptraceback);
if ((pstr = PyObject_Str (pvalue)))
pvalue_char = STRING_FROM_PYSTR (pstr);
g_warning ("Unable to load pygobject module >= %d.%d.%d, "
"please make sure it is in python's path (sys.path). "
"(use PYTHONPATH env variable to specify non default paths)\n%s",
PYGOBJECT_REQUIRED_MAJOR, PYGOBJECT_REQUIRED_MINOR,
PYGOBJECT_REQUIRED_MICRO, pvalue_char);
Py_DecRef (ptype);
Py_DecRef (pvalue);
Py_DecRef (ptraceback);
Py_DecRef (pstr);
PyErr_Clear ();
Py_Finalize ();
return TRUE;
}
pyg_disable_warning_redirections ();
/* Generate system path array */
command = g_string_new ("import sys; sys.path+=[");
/* GLADE_ENV_MODULE_PATH has priority */
if ((module_path = g_getenv (GLADE_ENV_MODULE_PATH)))
{
tokens = g_strsplit(module_path, ":", -1);
gint i;
for (i = 0; tokens[i]; i++)
g_string_append_printf (command, "'%s', ", tokens[i]);
}
/* Append modules directory */
g_string_append_printf (command, "'%s'", glade_app_get_modules_dir ());
/* Append extra paths (declared in the Preferences) */
for (paths = glade_catalog_get_extra_paths (); paths; paths = g_list_next (paths))
g_string_append_printf (command, ", '%s'", (gchar *) paths->data);
/* Close python statement */
g_string_append (command, "];\n");
/* Make sure we load Gtk 3 */
g_string_append (command, "import gi; gi.require_version('Gtk', '3.0');\n");
/* Finally run statement in vm */
PyRun_SimpleString (command->str);
g_string_free (command, TRUE);
g_strfreev (tokens);
return FALSE;
}
void
glade_python_init (const gchar *name)
{
static gsize init = 0;
gchar *import_sentence;
if (g_once_init_enter (&init))
{
if (glade_python_setup ())
return;
g_once_init_leave (&init, TRUE);
}
/* Yeah, we use the catalog name as the library */
import_sentence = g_strdup_printf ("import %s;", name);
/* Importing the module will create all the GTypes so that glade can use them at runtime */
PyRun_SimpleString (import_sentence);
g_free (import_sentence);
}
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