diff options
Diffstat (limited to 'Modules/_fileio.c')
| -rw-r--r-- | Modules/_fileio.c | 68 |
1 files changed, 50 insertions, 18 deletions
diff --git a/Modules/_fileio.c b/Modules/_fileio.c index adbf01b..88ce2f1 100644 --- a/Modules/_fileio.c +++ b/Modules/_fileio.c @@ -22,9 +22,8 @@ * * Unanswered questions: * - * - Add mode, name, and closed properties a la Python 2 file objects? - * - Do we need a (*close)() in the struct like Python 2 file objects, - * for not-quite-ordinary-file objects? + * - Add mode and name properties a la Python 2 file objects? + * - Check for readable/writable before attempting to read/write? */ #ifdef MS_WINDOWS @@ -55,15 +54,16 @@ static PyObject * fileio_close(PyFileIOObject *self) { if (self->fd >= 0) { + int fd = self->fd; + self->fd = -1; Py_BEGIN_ALLOW_THREADS errno = 0; - close(self->fd); + close(fd); Py_END_ALLOW_THREADS if (errno < 0) { PyErr_SetFromErrno(PyExc_IOError); return NULL; } - self->fd = -1; } Py_RETURN_NONE; @@ -123,7 +123,7 @@ static int fileio_init(PyObject *oself, PyObject *args, PyObject *kwds) { PyFileIOObject *self = (PyFileIOObject *) oself; - static char *kwlist[] = {"filename", "mode", NULL}; + static char *kwlist[] = {"file", "mode", NULL}; char *name = NULL; char *mode = "r"; char *s; @@ -131,6 +131,7 @@ fileio_init(PyObject *oself, PyObject *args, PyObject *kwds) int ret = 0; int rwa = 0, plus = 0, append = 0; int flags = 0; + int fd = -1; assert(PyFileIO_Check(oself)); if (self->fd >= 0) @@ -142,8 +143,20 @@ fileio_init(PyObject *oself, PyObject *args, PyObject *kwds) Py_DECREF(closeresult); } + if (PyArg_ParseTupleAndKeywords(args, kwds, "i|s:fileio", + kwlist, &fd, &mode)) { + if (fd < 0) { + PyErr_SetString(PyExc_ValueError, + "Negative filedescriptor"); + return -1; + } + } + else { + PyErr_Clear(); + #ifdef Py_WIN_WIDE_FILENAMES - if (GetVersion() < 0x80000000) { /* On NT, so wide API available */ + if (GetVersion() < 0x80000000) { + /* On NT, so wide API available */ PyObject *po; if (PyArg_ParseTupleAndKeywords(args, kwds, "U|s:fileio", kwlist, &po, &mode)) { @@ -155,17 +168,18 @@ fileio_init(PyObject *oself, PyObject *args, PyObject *kwds) } PyErr_SetString(PyExc_NotImplementedError, - "Windows wide filenames are not yet supported"); + "Windows wide filenames are not yet supported"); goto error; - } + } #endif - if (!wideargument) { + if (!wideargument) { if (!PyArg_ParseTupleAndKeywords(args, kwds, "et|s:fileio", kwlist, Py_FileSystemDefaultEncoding, &name, &mode)) goto error; + } } self->readable = self->writable = 0; @@ -224,13 +238,19 @@ fileio_init(PyObject *oself, PyObject *args, PyObject *kwds) flags |= O_BINARY; #endif - Py_BEGIN_ALLOW_THREADS - errno = 0; - self->fd = open(name, flags, 0666); - Py_END_ALLOW_THREADS - if (self->fd < 0 || dircheck(self) < 0) { - PyErr_SetFromErrnoWithFilename(PyExc_IOError, name); - goto error; + if (fd >= 0) { + self->fd = fd; + /* XXX Should we set self->own_fd = 0 ??? */ + } + else { + Py_BEGIN_ALLOW_THREADS + errno = 0; + self->fd = open(name, flags, 0666); + Py_END_ALLOW_THREADS + if (self->fd < 0 || dircheck(self) < 0) { + PyErr_SetFromErrnoWithFilename(PyExc_IOError, name); + goto error; + } } goto done; @@ -652,6 +672,18 @@ static PyMethodDef fileio_methods[] = { {NULL, NULL} /* sentinel */ }; +/* 'closed' is an attribute for backwards compatibility reasons. */ +static PyObject * +get_closed(PyFileIOObject *f, void *closure) +{ + return PyBool_FromLong((long)(f->fd < 0)); +} + +static PyGetSetDef fileio_getsetlist[] = { + {"closed", (getter)get_closed, NULL, "True if the file is closed"}, + {0}, +}; + PyTypeObject PyFileIO_Type = { PyObject_HEAD_INIT(&PyType_Type) 0, @@ -683,7 +715,7 @@ PyTypeObject PyFileIO_Type = { 0, /* tp_iternext */ fileio_methods, /* tp_methods */ 0, /* tp_members */ - 0, /* tp_getset */ + fileio_getsetlist, /* tp_getset */ 0, /* tp_base */ 0, /* tp_dict */ 0, /* tp_descr_get */ |