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/* -*- Mode: C; c-basic-offset: 4 -*-
* pyglib - Python bindings for GLib toolkit.
* Copyright (C) 1998-2003 James Henstridge
* 2004-2008 Johan Dahlin
*
* pygspawn.c: wrapper for the glib library.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include <Python.h>
#include <glib.h>
#include "pyglib.h"
#include "pyglib-private.h"
struct _PyGChildSetupData {
PyObject *func;
PyObject *data;
};
PYGLIB_DEFINE_TYPE("glib.Pid", PyGPid_Type, _PyLongObject)
static PyObject *
pyg_pid_close(PyObject *self, PyObject *args, PyObject *kwargs)
{
g_spawn_close_pid(_PyLong_AsLong(self));
Py_INCREF(Py_None);
return Py_None;
}
static PyMethodDef pyg_pid_methods[] = {
{ "close", (PyCFunction)pyg_pid_close, METH_NOARGS },
{ NULL, NULL, 0 }
};
static void
pyg_pid_free(PyObject *gpid)
{
g_spawn_close_pid((GPid) _PyLong_AsLong(gpid));
_PyLong_Type.tp_free((void *) gpid);
}
static int
pyg_pid_tp_init(PyObject *self, PyObject *args, PyObject *kwargs)
{
PyErr_SetString(PyExc_TypeError, "glib.Pid cannot be manually instantiated");
return -1;
}
PyObject *
pyg_pid_new(GPid pid)
{
_PyLongObject *pygpid;
#if PY_VERSION_HEX >= 0x03000000
return PyObject_CallMethod((PyObject*)&PyLong_Type, "__new__", "Oi",
&PyGPid_Type, pygpid);
#else
pygpid = PyObject_NEW(_PyLongObject, &PyGPid_Type);
pygpid->ob_ival = pid;
#endif
return (PyObject *) pygpid;
}
static void
_pyg_spawn_async_callback(gpointer user_data)
{
struct _PyGChildSetupData *data;
PyObject *retval;
PyGILState_STATE gil;
data = (struct _PyGChildSetupData *) user_data;
gil = pyglib_gil_state_ensure();
if (data->data)
retval = PyObject_CallFunction(data->func, "O", data->data);
else
retval = PyObject_CallFunction(data->func, NULL);
if (retval)
Py_DECREF(retval);
else
PyErr_Print();
Py_DECREF(data->func);
Py_XDECREF(data->data);
g_slice_free(struct _PyGChildSetupData, data);
pyglib_gil_state_release(gil);
}
PyObject *
pyglib_spawn_async(PyObject *object, PyObject *args, PyObject *kwargs)
{
static char *kwlist[] = { "argv", "envp", "working_directory", "flags",
"child_setup", "user_data", "standard_input",
"standard_output", "standard_error", NULL };
PyObject *pyargv, *pyenvp = NULL;
char **argv, **envp = NULL;
PyObject *func = Py_None, *user_data = NULL;
char *working_directory = NULL;
int flags = 0, _stdin = -1, _stdout = -1, _stderr = -1;
PyObject *pystdin = NULL, *pystdout = NULL, *pystderr = NULL;
gint *standard_input, *standard_output, *standard_error;
struct _PyGChildSetupData *callback_data = NULL;
GError *error = NULL;
GPid child_pid = -1;
Py_ssize_t len, i;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|OsiOOOOO:glib.spawn_async",
kwlist,
&pyargv, &pyenvp, &working_directory, &flags,
&func, &user_data,
&pystdin, &pystdout, &pystderr))
return NULL;
if (pystdin && PyObject_IsTrue(pystdin))
standard_input = &_stdin;
else
standard_input = NULL;
if (pystdout && PyObject_IsTrue(pystdout))
standard_output = &_stdout;
else
standard_output = NULL;
if (pystderr && PyObject_IsTrue(pystderr))
standard_error = &_stderr;
else
standard_error = NULL;
/* parse argv */
if (!PySequence_Check(pyargv)) {
PyErr_SetString(PyExc_TypeError,
"glib.spawn_async: "
"first argument must be a sequence of strings");
return NULL;
}
len = PySequence_Length(pyargv);
argv = g_new0(char *, len + 1);
for (i = 0; i < len; ++i) {
PyObject *tmp = PySequence_ITEM(pyargv, i);
if (!_PyUnicode_Check(tmp)) {
PyErr_SetString(PyExc_TypeError,
"glib.spawn_async: "
"first argument must be a sequence of strings");
g_free(argv);
Py_XDECREF(tmp);
return NULL;
}
argv[i] = _PyUnicode_AsString(tmp);
Py_DECREF(tmp);
}
/* parse envp */
if (pyenvp) {
if (!PySequence_Check(pyenvp)) {
PyErr_SetString(PyExc_TypeError,
"glib.spawn_async: "
"second argument must be a sequence of strings");
g_free(argv);
return NULL;
}
len = PySequence_Length(pyenvp);
envp = g_new0(char *, len + 1);
for (i = 0; i < len; ++i) {
PyObject *tmp = PySequence_ITEM(pyenvp, i);
if (!_PyUnicode_Check(tmp)) {
PyErr_SetString(PyExc_TypeError,
"glib.spawn_async: "
"second argument must be a sequence of strings");
g_free(envp);
Py_XDECREF(tmp);
g_free(argv);
return NULL;
}
envp[i] = _PyUnicode_AsString(tmp);
Py_DECREF(tmp);
}
}
if (func != Py_None) {
if (!PyCallable_Check(func)) {
PyErr_SetString(PyExc_TypeError, "child_setup parameter must be callable or None");
g_free(argv);
if (envp)
g_free(envp);
return NULL;
}
callback_data = g_slice_new(struct _PyGChildSetupData);
callback_data->func = func;
callback_data->data = user_data;
Py_INCREF(callback_data->func);
if (callback_data->data)
Py_INCREF(callback_data->data);
}
if (!g_spawn_async_with_pipes(working_directory, argv, envp, flags,
(func != Py_None ? _pyg_spawn_async_callback : NULL),
callback_data, &child_pid,
standard_input,
standard_output,
standard_error,
&error))
{
g_free(argv);
if (envp) g_free(envp);
if (callback_data) {
Py_DECREF(callback_data->func);
Py_XDECREF(callback_data->data);
g_slice_free(struct _PyGChildSetupData, callback_data);
}
pyglib_error_check(&error);
return NULL;
}
g_free(argv);
if (envp) g_free(envp);
if (standard_input)
pystdin = _PyLong_FromLong(*standard_input);
else {
Py_INCREF(Py_None);
pystdin = Py_None;
}
if (standard_output)
pystdout = _PyLong_FromLong(*standard_output);
else {
Py_INCREF(Py_None);
pystdout = Py_None;
}
if (standard_error)
pystderr = _PyLong_FromLong(*standard_error);
else {
Py_INCREF(Py_None);
pystderr = Py_None;
}
return Py_BuildValue("NNNN", pyg_pid_new(child_pid), pystdin, pystdout, pystderr);
}
void
pyglib_spawn_register_types(PyObject *d)
{
PyGPid_Type.tp_base = &_PyLong_Type;
PyGPid_Type.tp_flags = Py_TPFLAGS_DEFAULT;
PyGPid_Type.tp_methods = pyg_pid_methods;
PyGPid_Type.tp_init = pyg_pid_tp_init;
PyGPid_Type.tp_free = (freefunc)pyg_pid_free;
PYGLIB_REGISTER_TYPE(d, PyGPid_Type, "Pid");
}
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