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().
This commit is contained in:
Guido van Rossum
parent
8f1b651980
commit
407a22d2ce
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@ -9,82 +9,172 @@
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Only ever compiled with an MS compiler, so no attempt
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has been made to avoid MS language extensions, etc...
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This may only work on NT or 95...
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Author: Mark Hammond and Guido van Rossum.
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Maintenance: Guido van Rossum.
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***********************************************************/
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#include "Python.h"
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#include "malloc.h"
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// Perform locking operations on a file.
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static PyObject *msvcrt_locking(PyObject *self, PyObject *args)
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{
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int mode;
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long nBytes;
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PyObject *obFile;
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FILE *pFile;
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if (!PyArg_ParseTuple(args,"O!il:locking", &obFile, PyFile_Type, &mode, &nBytes))
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return NULL;
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if (NULL==(pFile = PyFile_AsFile(obFile)))
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return NULL;
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if (0 != _locking(_fileno(pFile), mode, nBytes))
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return PyErr_SetFromErrno(PyExc_IOError);
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Py_INCREF(Py_None);
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return Py_None;
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}
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// Forces the malloc heap to clean itself up, and free unused blocks
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// back to the OS.
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// Force the malloc heap to clean itself up, and free unused blocks
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// back to the OS. (According to the docs, only works on NT.)
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static PyObject *msvcrt_heapmin(PyObject *self, PyObject *args)
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{
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if (!PyArg_ParseTuple(args,":heapmin"))
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if (!PyArg_ParseTuple(args, ":heapmin"))
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return NULL;
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if (_heapmin()!=0)
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return PyErr_SetFromErrno(PyExc_MemoryError); // Is this the correct error???
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if (_heapmin() != 0)
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return PyErr_SetFromErrno(PyExc_IOError);
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Py_INCREF(Py_None);
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return Py_None;
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}
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/*******
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Left this out for now...
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// Convert an OS file handle to a Python file object (yay!).
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// This may only work on NT
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static PyObject *msvcrt_open_osfhandle(PyObject *self, PyObject *args)
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// Perform locking operations on a C runtime file descriptor.
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static PyObject *msvcrt_locking(PyObject *self, PyObject *args)
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{
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// Note that we get the underlying handle using the long
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// "abstract" interface. This will allow either a native integer
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// or else a Win32 extension PyHANDLE object, which implements an
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// int() converter.
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PyObject *obHandle;
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PyObject *obInt;
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int flags;
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long handle;
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if (!PyArg_ParseTuple(args,"Oi:open_osfhandle", &obHandle, &flags))
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int fd;
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int mode;
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long nbytes;
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if (!PyArg_ParseTuple(args, "iil:locking", &fd, &mode, &nbytes))
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return NULL;
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if (NULL==(obInt = PyNumber_Int(obHandle))) {
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PyErr_Clear();
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PyErr_SetString(PyExc_TypeError, "The handle param must be an integer, =
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or an object able to be converted to an integer");
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return NULL;
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}
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handle = PyInt_AsLong(obInt);
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Py_DECREF(obInt);
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rtHandle = _open_osfhandle(handle, flags);
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if (rtHandle==-1)
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if (_locking(fd, mode, nbytes) != 0)
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return PyErr_SetFromErrno(PyExc_IOError);
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what mode? Should I just return here, and expose _fdopen
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and setvbuf?
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f1=_fdopen(fd1, "w");
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setvbuf(f1, NULL, _IONBF, 0);
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f=PyFile_FromFile(f1, cmdstring, "w", fclose);
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Py_INCREF(Py_None);
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return Py_None;
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}
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*****/
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// Set the file translation mode for a C runtime file descriptor.
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static PyObject *msvcrt_setmode(PyObject *self, PyObject *args)
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{
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int fd;
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int flags;
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if (!PyArg_ParseTuple(args,"ii:setmode", &fd, &flags))
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return NULL;
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flags = _setmode(fd, flags);
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if (flags == -1)
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return PyErr_SetFromErrno(PyExc_IOError);
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return PyInt_FromLong(flags);
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}
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// Convert an OS file handle to a C runtime file descriptor.
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static PyObject *msvcrt_open_osfhandle(PyObject *self, PyObject *args)
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{
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long handle;
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int flags;
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int fd;
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if (!PyArg_ParseTuple(args, "li:open_osfhandle", &handle, &flags))
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return PyErr_SetFromErrno(PyExc_IOError);
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fd = _open_osfhandle(handle, flags);
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if (fd == -1)
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return PyErr_SetFromErrno(PyExc_IOError);
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return PyInt_FromLong(fd);
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}
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// Convert a C runtime file descriptor to an OS file handle.
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static PyObject *msvcrt_get_osfhandle(PyObject *self, PyObject *args)
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{
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int fd;
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long handle;
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if (!PyArg_ParseTuple(args,"i:get_osfhandle", &fd))
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return NULL;
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handle = _get_osfhandle(fd);
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if (handle == -1)
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return PyErr_SetFromErrno(PyExc_IOError);
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return PyInt_FromLong(handle);
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}
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/* Console I/O */
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#include <conio.h>
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static PyObject *msvcrt_kbhit(PyObject *self, PyObject *args)
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{
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int ok;
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if (!PyArg_ParseTuple(args, ":kbhit"))
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return NULL;
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ok = _kbhit();
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return PyInt_FromLong(ok);
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}
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static PyObject *msvcrt_getch(PyObject *self, PyObject *args)
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{
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int ch;
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char s[1];
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if (!PyArg_ParseTuple(args, ":getch"))
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return NULL;
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ch = _getch();
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s[0] = ch;
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return PyString_FromStringAndSize(s, 1);
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}
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static PyObject *msvcrt_getche(PyObject *self, PyObject *args)
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{
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int ch;
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char s[1];
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if (!PyArg_ParseTuple(args, ":getche"))
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return NULL;
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ch = _getche();
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s[0] = ch;
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return PyString_FromStringAndSize(s, 1);
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}
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static PyObject *msvcrt_putch(PyObject *self, PyObject *args)
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{
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char ch;
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if (!PyArg_ParseTuple(args, "c:putch", &ch))
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return NULL;
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_putch(ch);
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyObject *msvcrt_ungetch(PyObject *self, PyObject *args)
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{
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char ch;
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if (!PyArg_ParseTuple(args, "c:ungetch", &ch))
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return NULL;
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_ungetch(ch);
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Py_INCREF(Py_None);
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return Py_None;
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}
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/* List of functions exported by this module */
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static struct PyMethodDef msvcrt_functions[] = {
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{"heapmin", msvcrt_heapmin, 1},
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{"locking", msvcrt_locking, 1},
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{"heapmin", msvcrt_heapmin, 1},
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{"setmode", msvcrt_setmode, 1},
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{"open_osfhandle", msvcrt_open_osfhandle, 1},
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{"get_osfhandle", msvcrt_get_osfhandle, 1},
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{"kbhit", msvcrt_kbhit, 1},
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{"getch", msvcrt_getch, 1},
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{"getche", msvcrt_getche, 1},
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{"putch", msvcrt_putch, 1},
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{"ungetch", msvcrt_ungetch, 1},
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{NULL, NULL}
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};
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