Made it real. Changed locking() to work with file descriptors instead

of Python file objects.  Added open_osfhandle() (Mark had done some
work for that), get_osfhandle(), setmode(), and the console I/O
functions kbhit(), getch(), getche(), ungetch(), and putch().

PC/msvcrtmodule.c

@@ -9,82 +9,172 @@
 	Only ever compiled with an MS compiler, so no attempt
 	has been made to avoid MS language extensions, etc...
 
+	This may only work on NT or 95...
+
+	Author: Mark Hammond and Guido van Rossum.
+	Maintenance: Guido van Rossum.
+
 ***********************************************************/
+
 #include "Python.h"
 #include "malloc.h"
-// Perform locking operations on a file.
-static PyObject *msvcrt_locking(PyObject *self, PyObject *args)
-{
-	int mode;
-	long nBytes;
-	PyObject *obFile;
-	FILE *pFile;
-	if (!PyArg_ParseTuple(args,"O!il:locking", &obFile, PyFile_Type, &mode, &nBytes))
-		return NULL;
-	if (NULL==(pFile = PyFile_AsFile(obFile)))
-		return NULL;
-	if (0 != _locking(_fileno(pFile), mode, nBytes))
-		return PyErr_SetFromErrno(PyExc_IOError);
-	Py_INCREF(Py_None);
-	return Py_None;
-}
 
-// Forces the malloc heap to clean itself up, and free unused blocks
+// Force the malloc heap to clean itself up, and free unused blocks
-// back to the OS.
+// back to the OS.  (According to the docs, only works on NT.)
 static PyObject *msvcrt_heapmin(PyObject *self, PyObject *args)
 {
-	if (!PyArg_ParseTuple(args,":heapmin"))
+	if (!PyArg_ParseTuple(args, ":heapmin"))
 		return NULL;
-	if (_heapmin()!=0)
+
-		return PyErr_SetFromErrno(PyExc_MemoryError); // Is this the correct error???
+	if (_heapmin() != 0)
+		return PyErr_SetFromErrno(PyExc_IOError);
+
 	Py_INCREF(Py_None);
 	return Py_None;
 }
 
-/*******
+// Perform locking operations on a C runtime file descriptor.
-Left this out for now...
+static PyObject *msvcrt_locking(PyObject *self, PyObject *args)
-
-// Convert an OS file handle to a Python file object (yay!).
-// This may only work on NT
-static PyObject *msvcrt_open_osfhandle(PyObject *self, PyObject *args)
 {
-	// Note that we get the underlying handle using the long
+	int fd;
-	// "abstract" interface.  This will allow either a native integer
+	int mode;
-	// or else a Win32 extension PyHANDLE object, which implements an 
+	long nbytes;
-	// int() converter.
+
-	PyObject *obHandle;
+	if (!PyArg_ParseTuple(args, "iil:locking", &fd, &mode, &nbytes))
-	PyObject *obInt;
-	int flags;
-	long handle;
-	if (!PyArg_ParseTuple(args,"Oi:open_osfhandle", &obHandle, &flags))
 		return NULL;
 
-	if (NULL==(obInt = PyNumber_Int(obHandle))) {
+	if (_locking(fd, mode, nbytes) != 0)
-		PyErr_Clear();
-		PyErr_SetString(PyExc_TypeError, "The handle param must be an integer, =
-or an object able to be converted to an integer");
-		return NULL;
-	}
-	handle = PyInt_AsLong(obInt);
-	Py_DECREF(obInt);
-	rtHandle = _open_osfhandle(handle, flags);
-	if (rtHandle==-1)
 		return PyErr_SetFromErrno(PyExc_IOError);
 
-  what mode?  Should I just return here, and expose _fdopen 
+	Py_INCREF(Py_None);
-  and setvbuf?
+	return Py_None;
-
-	f1=_fdopen(fd1, "w");
-	setvbuf(f1, NULL, _IONBF, 0);
-	f=PyFile_FromFile(f1, cmdstring, "w", fclose);
-
 }
-*****/
+
+// Set the file translation mode for a C runtime file descriptor.
+static PyObject *msvcrt_setmode(PyObject *self, PyObject *args)
+{
+	int fd;
+	int flags;
+	if (!PyArg_ParseTuple(args,"ii:setmode", &fd, &flags))
+		return NULL;
+
+	flags = _setmode(fd, flags);
+	if (flags == -1)
+		return PyErr_SetFromErrno(PyExc_IOError);
+
+	return PyInt_FromLong(flags);
+}
+
+// Convert an OS file handle to a C runtime file descriptor.
+static PyObject *msvcrt_open_osfhandle(PyObject *self, PyObject *args)
+{
+	long handle;
+	int flags;
+	int fd;
+
+	if (!PyArg_ParseTuple(args, "li:open_osfhandle", &handle, &flags))
+		return PyErr_SetFromErrno(PyExc_IOError);
+
+	fd = _open_osfhandle(handle, flags);
+	if (fd == -1)
+		return PyErr_SetFromErrno(PyExc_IOError);
+
+	return PyInt_FromLong(fd);
+}
+
+// Convert a C runtime file descriptor to an OS file handle.
+static PyObject *msvcrt_get_osfhandle(PyObject *self, PyObject *args)
+{
+	int fd;
+	long handle;
+
+	if (!PyArg_ParseTuple(args,"i:get_osfhandle", &fd))
+		return NULL;
+
+	handle = _get_osfhandle(fd);
+	if (handle == -1)
+		return PyErr_SetFromErrno(PyExc_IOError);
+
+	return PyInt_FromLong(handle);
+}
+
+/* Console I/O */
+#include <conio.h>
+
+static PyObject *msvcrt_kbhit(PyObject *self, PyObject *args)
+{
+	int ok;
+
+	if (!PyArg_ParseTuple(args, ":kbhit"))
+		return NULL;
+
+	ok = _kbhit();
+	return PyInt_FromLong(ok);
+}
+
+static PyObject *msvcrt_getch(PyObject *self, PyObject *args)
+{
+	int ch;
+	char s[1];
+
+	if (!PyArg_ParseTuple(args, ":getch"))
+		return NULL;
+
+	ch = _getch();
+	s[0] = ch;
+	return PyString_FromStringAndSize(s, 1);
+}
+
+static PyObject *msvcrt_getche(PyObject *self, PyObject *args)
+{
+	int ch;
+	char s[1];
+
+	if (!PyArg_ParseTuple(args, ":getche"))
+		return NULL;
+
+	ch = _getche();
+	s[0] = ch;
+	return PyString_FromStringAndSize(s, 1);
+}
+
+static PyObject *msvcrt_putch(PyObject *self, PyObject *args)
+{
+	char ch;
+
+	if (!PyArg_ParseTuple(args, "c:putch", &ch))
+		return NULL;
+
+	_putch(ch);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static PyObject *msvcrt_ungetch(PyObject *self, PyObject *args)
+{
+	char ch;
+
+	if (!PyArg_ParseTuple(args, "c:ungetch", &ch))
+		return NULL;
+
+	_ungetch(ch);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
 
 /* List of functions exported by this module */
 static struct PyMethodDef msvcrt_functions[] = {
+	{"heapmin",		msvcrt_heapmin, 1},
 	{"locking",             msvcrt_locking, 1},
-	{"heapmin",				msvcrt_heapmin, 1},
+	{"setmode",		msvcrt_setmode, 1},
+	{"open_osfhandle",	msvcrt_open_osfhandle, 1},
+	{"get_osfhandle",	msvcrt_get_osfhandle, 1},
+	{"kbhit",		msvcrt_kbhit, 1},
+	{"getch",		msvcrt_getch, 1},
+	{"getche",		msvcrt_getche, 1},
+	{"putch",		msvcrt_putch, 1},
+	{"ungetch",		msvcrt_ungetch, 1},
 	{NULL,			NULL}
 };