Steen Lumholt's termios interface.

Modules/termios.c

+/* termiosmodule.c -- POSIX terminal I/O module implementation.  */
+
+#if 0
+#include <Py/Python.h>
+#else
+
+#include "allobjects.h"
+#include "pythonrun.h"
+#include "intrcheck.h"
+#include "modsupport.h"
+#include "sysmodule.h"
+
+#ifndef PyObject
+#define PyObject object
+typedef struct methodlist PyMethodDef;
+#endif
+
+#define PyInit_termios inittermios
+
+#endif /* 0 */
+
+#include <termios.h>
+
+#define BAD "bad termios argument"
+
+static PyObject *TermiosError;
+
+/* termios = tcgetattr(fd)
+   termios is
+   [iflag, oflag, cflag, lflag, ispeed, ospeed, [cc[0], ..., cc[NCCS]]] 
+
+   Return the attributes of the terminal device.  */
+
+static PyObject *
+termios_tcgetattr(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd;
+	struct termios mode;
+	PyObject *cc;
+	speed_t ispeed, ospeed;
+	PyObject *v;
+	int i;
+	char ch;
+
+	if (!PyArg_Parse(args, "i", &fd))
+		return NULL;
+
+	if (tcgetattr(fd, &mode) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	ispeed = cfgetispeed(&mode);
+	ospeed = cfgetospeed(&mode);
+
+	cc = PyList_New(NCCS);
+	if (cc == NULL)
+		return NULL;
+	for (i = 0; i < NCCS; i++) {
+		ch = (char)mode.c_cc[i];
+		v = PyString_FromStringAndSize(&ch, 1);
+		if (v == NULL)
+			return NULL;
+		PyList_SetItem(cc, i, v);
+	}
+
+	/* Convert the MIN and TIME slots to integer.  On some systems, the
+	   MIN and TIME slots are the same as the EOF and EOL slots.  So we
+	   only do this in noncanonical input mode.  */
+	if (mode.c_lflag & ICANON == 0) {
+		v = PyInt_FromLong((long)mode.c_cc[VMIN]);
+		if (v == NULL)
+			return NULL;
+		PyList_SetItem(cc, VMIN, v);
+		v = PyInt_FromLong((long)mode.c_cc[VTIME]);
+		if (v == NULL)
+			return NULL;
+		PyList_SetItem(cc, VTIME, v);
+	}
+
+	v = PyList_New(7);
+	PyList_SetItem(v, 0, PyInt_FromLong((long)mode.c_iflag));
+	PyList_SetItem(v, 1, PyInt_FromLong((long)mode.c_oflag));
+	PyList_SetItem(v, 2, PyInt_FromLong((long)mode.c_cflag));
+	PyList_SetItem(v, 3, PyInt_FromLong((long)mode.c_lflag));
+	PyList_SetItem(v, 4, PyInt_FromLong((long)ispeed));
+	PyList_SetItem(v, 5, PyInt_FromLong((long)ospeed));
+	PyList_SetItem(v, 6, cc);
+
+	return v;
+}
+
+/* tcsetattr(fd, when, termios)
+   Set the attributes of the terminal device.  */
+
+static PyObject *
+termios_tcsetattr(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd, when;
+	struct termios mode;
+	speed_t ispeed, ospeed;
+	PyObject *term, *cc, *v;
+	int i;
+
+	if (!PyArg_Parse(args, "(iiO)", &fd, &when, &term))
+		return NULL;
+	if (!PyList_Check(term) || PyList_Size(term) != 7) {
+		PyErr_SetString(PyExc_TypeError, BAD);
+		return NULL;
+	}
+	for (i = 0; i < 6; i++)
+		if (!PyInt_Check(PyList_GetItem(term, i))) {
+			PyErr_SetString(PyExc_TypeError, BAD);
+			return NULL;
+		}
+
+	mode.c_iflag = (tcflag_t) PyInt_AsLong(PyList_GetItem(term, 0));
+	mode.c_oflag = (tcflag_t) PyInt_AsLong(PyList_GetItem(term, 1));
+	mode.c_cflag = (tcflag_t) PyInt_AsLong(PyList_GetItem(term, 2));
+	mode.c_lflag = (tcflag_t) PyInt_AsLong(PyList_GetItem(term, 3));
+	ispeed = (speed_t) PyInt_AsLong(PyList_GetItem(term, 4));
+	ospeed = (speed_t) PyInt_AsLong(PyList_GetItem(term, 5));
+	cc = PyList_GetItem(term, 6);
+
+	if (!PyList_Check(cc) || PyList_Size(cc) != NCCS) {
+		PyErr_SetString(PyExc_TypeError, BAD);
+		return NULL;
+	}
+
+	for (i = 0; i < NCCS; i++) {
+		v = PyList_GetItem(cc, i);
+		if (PyString_Check(v) && PyString_Size(v) == 1)
+			mode.c_cc[i] = (cc_t) * PyString_AsString(v);
+		else if (PyInt_Check(v))
+			mode.c_cc[i] = (cc_t) PyInt_AsLong(v);
+		else {
+			PyErr_SetString(PyExc_TypeError, BAD);
+			return NULL;
+		}
+	}
+
+	if (cfsetispeed(&mode, (speed_t) ispeed) == -1)
+		PyErr_SetFromErrno(TermiosError);
+	if (cfsetospeed(&mode, (speed_t) ospeed) == -1)
+		PyErr_SetFromErrno(TermiosError);
+	if (tcsetattr(fd, when, &mode) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+/* tcsendbreak(fd, duration)
+   Generate a break condition.  */
+
+static PyObject *
+termios_tcsendbreak(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd, duration;
+
+	if (!PyArg_Parse(args, "(ii)", &fd, &duration))
+		return NULL;
+	if (tcsendbreak(fd, duration) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+/* tcdrain(fd) 
+   Wait until all queued output to the terminal has been 
+   transmitted.  */
+
+static PyObject *
+termios_tcdrain(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd;
+
+	if (!PyArg_Parse(args, "i", &fd))
+		return NULL;
+	if (tcdrain(fd) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+/* tcflush(fd, queue) 
+   Clear the input and/or output queues associated with 
+   the terminal.  */
+
+static PyObject *
+termios_tcflush(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd, queue;
+
+	if (!PyArg_Parse(args, "(ii)", &fd, &queue))
+		return NULL;
+	if (tcflush(fd, queue) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+/* tcflow(fd, action) 
+   Perform operations relating to XON/XOFF flow control on 
+   the terminal.  */
+
+static PyObject *
+termios_tcflow(self, args)
+	PyObject *self;
+	PyObject *args;
+{
+	int fd, action;
+
+	if (!PyArg_Parse(args, "(ii)", &fd, &action))
+		return NULL;
+	if (tcflow(fd, action) == -1)
+		PyErr_SetFromErrno(TermiosError);
+
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static PyMethodDef termios_methods[] =
+{
+	{"tcgetattr", termios_tcgetattr},
+	{"tcsetattr", termios_tcsetattr},
+	{"tcsendbreak", termios_tcsendbreak},
+	{"tcdrain", termios_tcdrain},
+	{"tcflush", termios_tcflush},
+	{"tcflow", termios_tcflow},
+	{NULL, NULL}
+};
+
+void
+PyInit_termios()
+{
+	PyObject *m, *d;
+
+	m = Py_InitModule("termios", termios_methods);
+
+	d = PyModule_GetDict(m);
+	TermiosError = Py_BuildValue("s", "termios.error");
+	PyDict_SetItemString(d, "error", TermiosError);
+
+	if (PyErr_Occurred())
+		Py_FatalError("can't initialize module termios");
+}