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SF bug [#460467] file objects should be subclassable.

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Preliminary support.  What's here works, but needs fine-tuning.
This commit is contained in:
Tim Peters 2001-09-13 05:38:56 +00:00
parent 93a696f491
commit 59c9a645e2
7 changed files with 170 additions and 53 deletions
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35
Python/bltinmodule.c
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@ -1192,31 +1192,20 @@ Return the octal representation of an integer or long integer.";
static PyObject *
builtin_open(PyObject *self, PyObject *args)
{
char *name = NULL;
char *mode = "r";
int bufsize = -1;
PyObject *f;
if (!PyArg_ParseTuple(args, "et|si:open", Py_FileSystemDefaultEncoding,
&name, &mode, &bufsize))
return NULL;
f = PyFile_FromString(name, mode);
PyMem_Free(name); /* free the encoded string */
if (f != NULL)
PyFile_SetBufSize(f, bufsize);
return f;
return PyFile_Type.tp_new(&PyFile_Type, args, NULL);
}
/* XXX Keep this in synch with file_doc in fileobject.c. */
static char open_doc[] =
"open(filename[, mode[, buffering]]) -> file object\n\
\n\
Open a file. The mode can be 'r', 'w' or 'a' for reading (default),\n\
writing or appending. The file will be created if it doesn't exist\n\
when opened for writing or appending; it will be truncated when\n\
opened for writing. Add a 'b' to the mode for binary files.\n\
Add a '+' to the mode to allow simultaneous reading and writing.\n\
If the buffering argument is given, 0 means unbuffered, 1 means line\n\
buffered, and larger numbers specify the buffer size.";
"open(name[, mode[, buffering]]) -> file object\n"
"\n"
"Open a file. The mode can be 'r', 'w' or 'a' for reading (default),\n"
"writing or appending. The file will be created if it doesn't exist\n"
"when opened for writing or appending; it will be truncated when\n"
"opened for writing. Add a 'b' to the mode for binary files.\n"
"Add a '+' to the mode to allow simultaneous reading and writing.\n"
"If the buffering argument is given, 0 means unbuffered, 1 means line\n"
"buffered, and larger numbers specify the buffer size.";
static PyObject *
@ -1894,6 +1883,8 @@ _PyBuiltin_Init(void)
return NULL;
if (PyDict_SetItemString(dict, "type", (PyObject *) &PyType_Type) < 0)
return NULL;
if (PyDict_SetItemString(dict, "file", (PyObject *) &PyFile_Type) < 0)
return NULL;
#ifdef Py_USING_UNICODE
if (PyDict_SetItemString(dict, "unicode",
(PyObject *) &PyUnicode_Type) < 0)