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Kaydet (Commit) b26dc465 authored tarafından Antoine Pitrou's avatar Antoine Pitrou
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Untabify Modules/_io/fileio.c

üst 8efa867b
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Modules/_io/fileio.c
Dosyayı görüntüle @ b26dc465
......@@ -49,14 +49,14 @@
#endif
typedef struct {
PyObject_HEAD
int fd;
unsigned int readable : 1;
unsigned int writable : 1;
signed int seekable : 2; /* -1 means unknown */
unsigned int closefd : 1;
PyObject *weakreflist;
PyObject *dict;
PyObject_HEAD
int fd;
unsigned int readable : 1;
unsigned int writable : 1;
signed int seekable : 2; /* -1 means unknown */
unsigned int closefd : 1;
PyObject *weakreflist;
PyObject *dict;
} fileio;
PyTypeObject PyFileIO_Type;
......@@ -66,7 +66,7 @@ PyTypeObject PyFileIO_Type;
int
_PyFileIO_closed(PyObject *self)
{
return ((fileio *)self)->fd < 0;
return ((fileio *)self)->fd < 0;
}
static PyObject *
......@@ -78,64 +78,64 @@ static PyObject *portable_lseek(int fd, PyObject *posobj, int whence);
static int
internal_close(fileio *self)
{
int err = 0;
int save_errno = 0;
if (self->fd >= 0) {
int fd = self->fd;
self->fd = -1;
/* fd is accessible and someone else may have closed it */
if (_PyVerify_fd(fd)) {
Py_BEGIN_ALLOW_THREADS
err = close(fd);
if (err < 0)
save_errno = errno;
Py_END_ALLOW_THREADS
} else {
save_errno = errno;
err = -1;
}
}
if (err < 0) {
errno = save_errno;
PyErr_SetFromErrno(PyExc_IOError);
return -1;
}
return 0;
int err = 0;
int save_errno = 0;
if (self->fd >= 0) {
int fd = self->fd;
self->fd = -1;
/* fd is accessible and someone else may have closed it */
if (_PyVerify_fd(fd)) {
Py_BEGIN_ALLOW_THREADS
err = close(fd);
if (err < 0)
save_errno = errno;
Py_END_ALLOW_THREADS
} else {
save_errno = errno;
err = -1;
}
}
if (err < 0) {
errno = save_errno;
PyErr_SetFromErrno(PyExc_IOError);
return -1;
}
return 0;
}
static PyObject *
fileio_close(fileio *self)
{
if (!self->closefd) {
self->fd = -1;
Py_RETURN_NONE;
}
errno = internal_close(self);
if (errno < 0)
return NULL;
return PyObject_CallMethod((PyObject*)&PyRawIOBase_Type,
"close", "O", self);
if (!self->closefd) {
self->fd = -1;
Py_RETURN_NONE;
}
errno = internal_close(self);
if (errno < 0)
return NULL;
return PyObject_CallMethod((PyObject*)&PyRawIOBase_Type,
"close", "O", self);
}
static PyObject *
fileio_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
fileio *self;
fileio *self;
assert(type != NULL && type->tp_alloc != NULL);
assert(type != NULL && type->tp_alloc != NULL);
self = (fileio *) type->tp_alloc(type, 0);
if (self != NULL) {
self->fd = -1;
self->readable = 0;
self->writable = 0;
self->seekable = -1;
self->closefd = 1;
self->weakreflist = NULL;
}
self = (fileio *) type->tp_alloc(type, 0);
if (self != NULL) {
self->fd = -1;
self->readable = 0;
self->writable = 0;
self->seekable = -1;
self->closefd = 1;
self->weakreflist = NULL;
}
return (PyObject *) self;
return (PyObject *) self;
}
/* On Unix, open will succeed for directories.
......@@ -146,535 +146,535 @@ static int
dircheck(fileio* self, const char *name)
{
#if defined(HAVE_FSTAT) && defined(S_IFDIR) && defined(EISDIR)
struct stat buf;
if (self->fd < 0)
return 0;
if (fstat(self->fd, &buf) == 0 && S_ISDIR(buf.st_mode)) {
char *msg = strerror(EISDIR);
PyObject *exc;
if (internal_close(self))
return -1;
exc = PyObject_CallFunction(PyExc_IOError, "(iss)",
EISDIR, msg, name);
PyErr_SetObject(PyExc_IOError, exc);
Py_XDECREF(exc);
return -1;
}
struct stat buf;
if (self->fd < 0)
return 0;
if (fstat(self->fd, &buf) == 0 && S_ISDIR(buf.st_mode)) {
char *msg = strerror(EISDIR);
PyObject *exc;
if (internal_close(self))
return -1;
exc = PyObject_CallFunction(PyExc_IOError, "(iss)",
EISDIR, msg, name);
PyErr_SetObject(PyExc_IOError, exc);
Py_XDECREF(exc);
return -1;
}
#endif
return 0;
return 0;
}
static int
check_fd(int fd)
{
#if defined(HAVE_FSTAT)
struct stat buf;
if (!_PyVerify_fd(fd) || (fstat(fd, &buf) < 0 && errno == EBADF)) {
PyObject *exc;
char *msg = strerror(EBADF);
exc = PyObject_CallFunction(PyExc_OSError, "(is)",
EBADF, msg);
PyErr_SetObject(PyExc_OSError, exc);
Py_XDECREF(exc);
return -1;
}
struct stat buf;
if (!_PyVerify_fd(fd) || (fstat(fd, &buf) < 0 && errno == EBADF)) {
PyObject *exc;
char *msg = strerror(EBADF);
exc = PyObject_CallFunction(PyExc_OSError, "(is)",
EBADF, msg);
PyErr_SetObject(PyExc_OSError, exc);
Py_XDECREF(exc);
return -1;
}
#endif
return 0;
return 0;
}
static int
fileio_init(PyObject *oself, PyObject *args, PyObject *kwds)
{
fileio *self = (fileio *) oself;
static char *kwlist[] = {"file", "mode", "closefd", NULL};
const char *name = NULL;
PyObject *nameobj, *stringobj = NULL;
char *mode = "r";
char *s;
fileio *self = (fileio *) oself;
static char *kwlist[] = {"file", "mode", "closefd", NULL};
const char *name = NULL;
PyObject *nameobj, *stringobj = NULL;
char *mode = "r";
char *s;
#ifdef MS_WINDOWS
Py_UNICODE *widename = NULL;
Py_UNICODE *widename = NULL;
#endif
int ret = 0;
int rwa = 0, plus = 0, append = 0;
int flags = 0;
int fd = -1;
int closefd = 1;
assert(PyFileIO_Check(oself));
if (self->fd >= 0) {
/* Have to close the existing file first. */
if (internal_close(self) < 0)
return -1;
}
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|si:fileio",
kwlist, &nameobj, &mode, &closefd))
return -1;
if (PyFloat_Check(nameobj)) {
PyErr_SetString(PyExc_TypeError,
"integer argument expected, got float");
return -1;
}
fd = PyLong_AsLong(nameobj);
if (fd < 0) {
if (!PyErr_Occurred()) {
PyErr_SetString(PyExc_ValueError,
"Negative filedescriptor");
return -1;
}
PyErr_Clear();
}
int ret = 0;
int rwa = 0, plus = 0, append = 0;
int flags = 0;
int fd = -1;
int closefd = 1;
assert(PyFileIO_Check(oself));
if (self->fd >= 0) {
/* Have to close the existing file first. */
if (internal_close(self) < 0)
return -1;
}
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|si:fileio",
kwlist, &nameobj, &mode, &closefd))
return -1;
if (PyFloat_Check(nameobj)) {
PyErr_SetString(PyExc_TypeError,
"integer argument expected, got float");
return -1;
}
fd = PyLong_AsLong(nameobj);
if (fd < 0) {
if (!PyErr_Occurred()) {
PyErr_SetString(PyExc_ValueError,
"Negative filedescriptor");
return -1;
}
PyErr_Clear();
}
#ifdef MS_WINDOWS
if (PyUnicode_Check(nameobj))
widename = PyUnicode_AS_UNICODE(nameobj);
if (widename == NULL)
if (PyUnicode_Check(nameobj))
widename = PyUnicode_AS_UNICODE(nameobj);
if (widename == NULL)
#endif
if (fd < 0)
{
if (PyBytes_Check(nameobj) || PyByteArray_Check(nameobj)) {
Py_ssize_t namelen;
if (PyObject_AsCharBuffer(nameobj, &name, &namelen) < 0)
return -1;
}
else {
PyObject *u = PyUnicode_FromObject(nameobj);
if (u == NULL)
return -1;
stringobj = PyUnicode_AsEncodedString(
u, Py_FileSystemDefaultEncoding, NULL);
Py_DECREF(u);
if (stringobj == NULL)
return -1;
if (!PyBytes_Check(stringobj)) {
PyErr_SetString(PyExc_TypeError,
"encoder failed to return bytes");
goto error;
}
name = PyBytes_AS_STRING(stringobj);
}
}
s = mode;
while (*s) {
switch (*s++) {
case 'r':
if (rwa) {
bad_mode:
PyErr_SetString(PyExc_ValueError,
"Must have exactly one of read/write/append mode");
goto error;
}
rwa = 1;
self->readable = 1;
break;
case 'w':
if (rwa)
goto bad_mode;
rwa = 1;
self->writable = 1;
flags |= O_CREAT | O_TRUNC;
break;
case 'a':
if (rwa)
goto bad_mode;
rwa = 1;
self->writable = 1;
flags |= O_CREAT;
append = 1;
break;
case 'b':
break;
case '+':
if (plus)
goto bad_mode;
self->readable = self->writable = 1;
plus = 1;
break;
default:
PyErr_Format(PyExc_ValueError,
"invalid mode: %.200s", mode);
goto error;
}
}
if (!rwa)
goto bad_mode;
if (self->readable && self->writable)
flags |= O_RDWR;
else if (self->readable)
flags |= O_RDONLY;
else
flags |= O_WRONLY;
if (fd < 0)
{
if (PyBytes_Check(nameobj) || PyByteArray_Check(nameobj)) {
Py_ssize_t namelen;
if (PyObject_AsCharBuffer(nameobj, &name, &namelen) < 0)
return -1;
}
else {
PyObject *u = PyUnicode_FromObject(nameobj);
if (u == NULL)
return -1;
stringobj = PyUnicode_AsEncodedString(
u, Py_FileSystemDefaultEncoding, NULL);
Py_DECREF(u);
if (stringobj == NULL)
return -1;
if (!PyBytes_Check(stringobj)) {
PyErr_SetString(PyExc_TypeError,
"encoder failed to return bytes");
goto error;
}
name = PyBytes_AS_STRING(stringobj);
}
}
s = mode;
while (*s) {
switch (*s++) {
case 'r':
if (rwa) {
bad_mode:
PyErr_SetString(PyExc_ValueError,
"Must have exactly one of read/write/append mode");
goto error;
}
rwa = 1;
self->readable = 1;
break;
case 'w':
if (rwa)
goto bad_mode;
rwa = 1;
self->writable = 1;
flags |= O_CREAT | O_TRUNC;
break;
case 'a':
if (rwa)
goto bad_mode;
rwa = 1;
self->writable = 1;
flags |= O_CREAT;
append = 1;
break;
case 'b':
break;
case '+':
if (plus)
goto bad_mode;
self->readable = self->writable = 1;
plus = 1;
break;
default:
PyErr_Format(PyExc_ValueError,
"invalid mode: %.200s", mode);
goto error;
}
}
if (!rwa)
goto bad_mode;
if (self->readable && self->writable)
flags |= O_RDWR;
else if (self->readable)
flags |= O_RDONLY;
else
flags |= O_WRONLY;
#ifdef O_BINARY
flags |= O_BINARY;
flags |= O_BINARY;
#endif
#ifdef O_APPEND
if (append)
flags |= O_APPEND;
if (append)
flags |= O_APPEND;
#endif
if (fd >= 0) {
if (check_fd(fd))
goto error;
self->fd = fd;
self->closefd = closefd;
}
else {
self->closefd = 1;
if (!closefd) {
PyErr_SetString(PyExc_ValueError,
"Cannot use closefd=False with file name");
goto error;
}
Py_BEGIN_ALLOW_THREADS
errno = 0;
if (fd >= 0) {
if (check_fd(fd))
goto error;
self->fd = fd;
self->closefd = closefd;
}
else {
self->closefd = 1;
if (!closefd) {
PyErr_SetString(PyExc_ValueError,
"Cannot use closefd=False with file name");
goto error;
}
Py_BEGIN_ALLOW_THREADS
errno = 0;
#ifdef MS_WINDOWS
if (widename != NULL)
self->fd = _wopen(widename, flags, 0666);
else
if (widename != NULL)
self->fd = _wopen(widename, flags, 0666);
else
#endif
self->fd = open(name, flags, 0666);
Py_END_ALLOW_THREADS
if (self->fd < 0) {
self->fd = open(name, flags, 0666);
Py_END_ALLOW_THREADS
if (self->fd < 0) {
#ifdef MS_WINDOWS
if (widename != NULL)
PyErr_SetFromErrnoWithUnicodeFilename(PyExc_IOError, widename);
else
if (widename != NULL)
PyErr_SetFromErrnoWithUnicodeFilename(PyExc_IOError, widename);
else
#endif
PyErr_SetFromErrnoWithFilename(PyExc_IOError, name);
goto error;
}
if(dircheck(self, name) < 0)
goto error;
}
if (PyObject_SetAttrString((PyObject *)self, "name", nameobj) < 0)
goto error;
if (append) {
/* For consistent behaviour, we explicitly seek to the
end of file (otherwise, it might be done only on the
first write()). */
PyObject *pos = portable_lseek(self->fd, NULL, 2);
if (pos == NULL)
goto error;
Py_DECREF(pos);
}
goto done;
PyErr_SetFromErrnoWithFilename(PyExc_IOError, name);
goto error;
}
if(dircheck(self, name) < 0)
goto error;
}
if (PyObject_SetAttrString((PyObject *)self, "name", nameobj) < 0)
goto error;
if (append) {
/* For consistent behaviour, we explicitly seek to the
end of file (otherwise, it might be done only on the
first write()). */
PyObject *pos = portable_lseek(self->fd, NULL, 2);
if (pos == NULL)
goto error;
Py_DECREF(pos);
}
goto done;
error:
ret = -1;
ret = -1;
done:
Py_CLEAR(stringobj);
return ret;
Py_CLEAR(stringobj);
return ret;
}
static int
fileio_traverse(fileio *self, visitproc visit, void *arg)
{
Py_VISIT(self->dict);
return 0;
Py_VISIT(self->dict);
return 0;
}
static int
fileio_clear(fileio *self)
{
Py_CLEAR(self->dict);
return 0;
Py_CLEAR(self->dict);
return 0;
}
static void
fileio_dealloc(fileio *self)
{
if (_PyIOBase_finalize((PyObject *) self) < 0)
return;
_PyObject_GC_UNTRACK(self);
if (self->weakreflist != NULL)
PyObject_ClearWeakRefs((PyObject *) self);
Py_CLEAR(self->dict);
Py_TYPE(self)->tp_free((PyObject *)self);
if (_PyIOBase_finalize((PyObject *) self) < 0)
return;
_PyObject_GC_UNTRACK(self);
if (self->weakreflist != NULL)
PyObject_ClearWeakRefs((PyObject *) self);
Py_CLEAR(self->dict);
Py_TYPE(self)->tp_free((PyObject *)self);
}
static PyObject *
err_closed(void)
{
PyErr_SetString(PyExc_ValueError, "I/O operation on closed file");
return NULL;
PyErr_SetString(PyExc_ValueError, "I/O operation on closed file");
return NULL;
}
static PyObject *
err_mode(char *action)
{
PyErr_Format(PyExc_ValueError, "File not open for %s", action);
return NULL;
PyErr_Format(PyExc_ValueError, "File not open for %s", action);
return NULL;
}
static PyObject *
fileio_fileno(fileio *self)
{
if (self->fd < 0)
return err_closed();
return PyInt_FromLong((long) self->fd);
if (self->fd < 0)
return err_closed();
return PyInt_FromLong((long) self->fd);
}
static PyObject *
fileio_readable(fileio *self)
{
if (self->fd < 0)
return err_closed();
return PyBool_FromLong((long) self->readable);
if (self->fd < 0)
return err_closed();
return PyBool_FromLong((long) self->readable);
}
static PyObject *
fileio_writable(fileio *self)
{
if (self->fd < 0)
return err_closed();
return PyBool_FromLong((long) self->writable);
if (self->fd < 0)
return err_closed();
return PyBool_FromLong((long) self->writable);
}
static PyObject *
fileio_seekable(fileio *self)
{
if (self->fd < 0)
return err_closed();
if (self->seekable < 0) {
PyObject *pos = portable_lseek(self->fd, NULL, SEEK_CUR);
if (pos == NULL) {
PyErr_Clear();
self->seekable = 0;
} else {
Py_DECREF(pos);
self->seekable = 1;
}
}
return PyBool_FromLong((long) self->seekable);
if (self->fd < 0)
return err_closed();
if (self->seekable < 0) {
PyObject *pos = portable_lseek(self->fd, NULL, SEEK_CUR);
if (pos == NULL) {
PyErr_Clear();
self->seekable = 0;
} else {
Py_DECREF(pos);
self->seekable = 1;
}
}
return PyBool_FromLong((long) self->seekable);
}
static PyObject *
fileio_readinto(fileio *self, PyObject *args)
{
Py_buffer pbuf;
Py_ssize_t n;
if (self->fd < 0)
return err_closed();
if (!self->readable)
return err_mode("reading");
if (!PyArg_ParseTuple(args, "w*", &pbuf))
return NULL;
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
} else
n = -1;
PyBuffer_Release(&pbuf);
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromSsize_t(n);
Py_buffer pbuf;
Py_ssize_t n;
if (self->fd < 0)
return err_closed();
if (!self->readable)
return err_mode("reading");
if (!PyArg_ParseTuple(args, "w*", &pbuf))
return NULL;
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
} else
n = -1;
PyBuffer_Release(&pbuf);
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromSsize_t(n);
}
static size_t
new_buffersize(fileio *self, size_t currentsize)
{
#ifdef HAVE_FSTAT
off_t pos, end;
struct stat st;
if (fstat(self->fd, &st) == 0) {
end = st.st_size;
pos = lseek(self->fd, 0L, SEEK_CUR);
/* Files claiming a size smaller than SMALLCHUNK may
actually be streaming pseudo-files. In this case, we
apply the more aggressive algorithm below.
*/
if (end >= SMALLCHUNK && end >= pos && pos >= 0) {
/* Add 1 so if the file were to grow we'd notice. */
return currentsize + end - pos + 1;
}
}
off_t pos, end;
struct stat st;
if (fstat(self->fd, &st) == 0) {
end = st.st_size;
pos = lseek(self->fd, 0L, SEEK_CUR);
/* Files claiming a size smaller than SMALLCHUNK may
actually be streaming pseudo-files. In this case, we
apply the more aggressive algorithm below.
*/
if (end >= SMALLCHUNK && end >= pos && pos >= 0) {
/* Add 1 so if the file were to grow we'd notice. */
return currentsize + end - pos + 1;
}
}
#endif
if (currentsize > SMALLCHUNK) {
/* Keep doubling until we reach BIGCHUNK;
then keep adding BIGCHUNK. */
if (currentsize <= BIGCHUNK)
return currentsize + currentsize;
else
return currentsize + BIGCHUNK;
}
return currentsize + SMALLCHUNK;
if (currentsize > SMALLCHUNK) {
/* Keep doubling until we reach BIGCHUNK;
then keep adding BIGCHUNK. */
if (currentsize <= BIGCHUNK)
return currentsize + currentsize;
else
return currentsize + BIGCHUNK;
}
return currentsize + SMALLCHUNK;
}
static PyObject *
fileio_readall(fileio *self)
{
PyObject *result;
Py_ssize_t total = 0;
int n;
if (!_PyVerify_fd(self->fd))
return PyErr_SetFromErrno(PyExc_IOError);
result = PyBytes_FromStringAndSize(NULL, SMALLCHUNK);
if (result == NULL)
return NULL;
while (1) {
size_t newsize = new_buffersize(self, total);
if (newsize > PY_SSIZE_T_MAX || newsize <= 0) {
PyErr_SetString(PyExc_OverflowError,
"unbounded read returned more bytes "
"than a Python string can hold ");
Py_DECREF(result);
return NULL;
}
if (PyBytes_GET_SIZE(result) < (Py_ssize_t)newsize) {
if (_PyBytes_Resize(&result, newsize) < 0) {
if (total == 0) {
Py_DECREF(result);
return NULL;
}
PyErr_Clear();
break;
}
}
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd,
PyBytes_AS_STRING(result) + total,
newsize - total);
Py_END_ALLOW_THREADS
if (n == 0)
break;
if (n < 0) {
if (total > 0)
break;
if (errno == EAGAIN) {
Py_DECREF(result);
Py_RETURN_NONE;
}
Py_DECREF(result);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
total += n;
}
if (PyBytes_GET_SIZE(result) > total) {
if (_PyBytes_Resize(&result, total) < 0) {
/* This should never happen, but just in case */
Py_DECREF(result);
return NULL;
}
}
return result;
PyObject *result;
Py_ssize_t total = 0;
int n;
if (!_PyVerify_fd(self->fd))
return PyErr_SetFromErrno(PyExc_IOError);
result = PyBytes_FromStringAndSize(NULL, SMALLCHUNK);
if (result == NULL)
return NULL;
while (1) {
size_t newsize = new_buffersize(self, total);
if (newsize > PY_SSIZE_T_MAX || newsize <= 0) {
PyErr_SetString(PyExc_OverflowError,
"unbounded read returned more bytes "
"than a Python string can hold ");
Py_DECREF(result);
return NULL;
}
if (PyBytes_GET_SIZE(result) < (Py_ssize_t)newsize) {
if (_PyBytes_Resize(&result, newsize) < 0) {
if (total == 0) {
Py_DECREF(result);
return NULL;
}
PyErr_Clear();
break;
}
}
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd,
PyBytes_AS_STRING(result) + total,
newsize - total);
Py_END_ALLOW_THREADS
if (n == 0)
break;
if (n < 0) {
if (total > 0)
break;
if (errno == EAGAIN) {
Py_DECREF(result);
Py_RETURN_NONE;
}
Py_DECREF(result);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
total += n;
}
if (PyBytes_GET_SIZE(result) > total) {
if (_PyBytes_Resize(&result, total) < 0) {
/* This should never happen, but just in case */
Py_DECREF(result);
return NULL;
}
}
return result;
}
static PyObject *
fileio_read(fileio *self, PyObject *args)
{
char *ptr;
Py_ssize_t n;
Py_ssize_t size = -1;
PyObject *bytes;
if (self->fd < 0)
return err_closed();
if (!self->readable)
return err_mode("reading");
if (!PyArg_ParseTuple(args, "|O&", &_PyIO_ConvertSsize_t, &size))
return NULL;
if (size < 0) {
return fileio_readall(self);
}
bytes = PyBytes_FromStringAndSize(NULL, size);
if (bytes == NULL)
return NULL;
ptr = PyBytes_AS_STRING(bytes);
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd, ptr, size);
Py_END_ALLOW_THREADS
} else
n = -1;
if (n < 0) {
Py_DECREF(bytes);
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (n != size) {
if (_PyBytes_Resize(&bytes, n) < 0) {
Py_DECREF(bytes);
return NULL;
}
}
return (PyObject *) bytes;
char *ptr;
Py_ssize_t n;
Py_ssize_t size = -1;
PyObject *bytes;
if (self->fd < 0)
return err_closed();
if (!self->readable)
return err_mode("reading");
if (!PyArg_ParseTuple(args, "|O&", &_PyIO_ConvertSsize_t, &size))
return NULL;
if (size < 0) {
return fileio_readall(self);
}
bytes = PyBytes_FromStringAndSize(NULL, size);
if (bytes == NULL)
return NULL;
ptr = PyBytes_AS_STRING(bytes);
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = read(self->fd, ptr, size);
Py_END_ALLOW_THREADS
} else
n = -1;
if (n < 0) {
Py_DECREF(bytes);
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (n != size) {
if (_PyBytes_Resize(&bytes, n) < 0) {
Py_DECREF(bytes);
return NULL;
}
}
return (PyObject *) bytes;
}
static PyObject *
fileio_write(fileio *self, PyObject *args)
{
Py_buffer pbuf;
Py_ssize_t n;
if (self->fd < 0)
return err_closed();
if (!self->writable)
return err_mode("writing");
if (!PyArg_ParseTuple(args, "s*", &pbuf))
return NULL;
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = write(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
} else
n = -1;
PyBuffer_Release(&pbuf);
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromSsize_t(n);
Py_buffer pbuf;
Py_ssize_t n;
if (self->fd < 0)
return err_closed();
if (!self->writable)
return err_mode("writing");
if (!PyArg_ParseTuple(args, "s*", &pbuf))
return NULL;
if (_PyVerify_fd(self->fd)) {
Py_BEGIN_ALLOW_THREADS
errno = 0;
n = write(self->fd, pbuf.buf, pbuf.len);
Py_END_ALLOW_THREADS
} else
n = -1;
PyBuffer_Release(&pbuf);
if (n < 0) {
if (errno == EAGAIN)
Py_RETURN_NONE;
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return PyLong_FromSsize_t(n);
}
/* XXX Windows support below is likely incomplete */
......@@ -683,240 +683,240 @@ fileio_write(fileio *self, PyObject *args)
static PyObject *
portable_lseek(int fd, PyObject *posobj, int whence)
{
Py_off_t pos, res;
Py_off_t pos, res;
#ifdef SEEK_SET
/* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */
switch (whence) {
/* Turn 0, 1, 2 into SEEK_{SET,CUR,END} */
switch (whence) {
#if SEEK_SET != 0
case 0: whence = SEEK_SET; break;
case 0: whence = SEEK_SET; break;
#endif
#if SEEK_CUR != 1
case 1: whence = SEEK_CUR; break;
case 1: whence = SEEK_CUR; break;
#endif
#if SEEK_END != 2
case 2: whence = SEEK_END; break;
case 2: whence = SEEK_END; break;
#endif
}
}
#endif /* SEEK_SET */
if (posobj == NULL)
pos = 0;
else {
if(PyFloat_Check(posobj)) {
PyErr_SetString(PyExc_TypeError, "an integer is required");
return NULL;
}
if (posobj == NULL)
pos = 0;
else {
if(PyFloat_Check(posobj)) {
PyErr_SetString(PyExc_TypeError, "an integer is required");
return NULL;
}
#if defined(HAVE_LARGEFILE_SUPPORT)
pos = PyLong_AsLongLong(posobj);
pos = PyLong_AsLongLong(posobj);
#else
pos = PyLong_AsLong(posobj);
pos = PyLong_AsLong(posobj);
#endif
if (PyErr_Occurred())
return NULL;
}
if (PyErr_Occurred())
return NULL;
}
if (_PyVerify_fd(fd)) {
Py_BEGIN_ALLOW_THREADS
if (_PyVerify_fd(fd)) {
Py_BEGIN_ALLOW_THREADS
#if defined(MS_WIN64) || defined(MS_WINDOWS)
res = _lseeki64(fd, pos, whence);
res = _lseeki64(fd, pos, whence);
#else
res = lseek(fd, pos, whence);
res = lseek(fd, pos, whence);
#endif
Py_END_ALLOW_THREADS
} else
res = -1;
if (res < 0)
return PyErr_SetFromErrno(PyExc_IOError);
Py_END_ALLOW_THREADS
} else
res = -1;
if (res < 0)
return PyErr_SetFromErrno(PyExc_IOError);
#if defined(HAVE_LARGEFILE_SUPPORT)
return PyLong_FromLongLong(res);
return PyLong_FromLongLong(res);
#else
return PyLong_FromLong(res);
return PyLong_FromLong(res);
#endif
}
static PyObject *
fileio_seek(fileio *self, PyObject *args)
{
PyObject *posobj;
int whence = 0;
PyObject *posobj;
int whence = 0;
if (self->fd < 0)
return err_closed();
if (self->fd < 0)
return err_closed();
if (!PyArg_ParseTuple(args, "O|i", &posobj, &whence))
return NULL;
if (!PyArg_ParseTuple(args, "O|i", &posobj, &whence))
return NULL;
return portable_lseek(self->fd, posobj, whence);
return portable_lseek(self->fd, posobj, whence);
}
static PyObject *
fileio_tell(fileio *self, PyObject *args)
{
if (self->fd < 0)
return err_closed();
if (self->fd < 0)
return err_closed();
return portable_lseek(self->fd, NULL, 1);
return portable_lseek(self->fd, NULL, 1);
}
#ifdef HAVE_FTRUNCATE
static PyObject *
fileio_truncate(fileio *self, PyObject *args)
{
PyObject *posobj = NULL; /* the new size wanted by the user */
PyObject *posobj = NULL; /* the new size wanted by the user */
#ifndef MS_WINDOWS
Py_off_t pos;
Py_off_t pos;
#endif
int ret;
int fd;
fd = self->fd;
if (fd < 0)
return err_closed();
if (!self->writable)
return err_mode("writing");
if (!PyArg_ParseTuple(args, "|O", &posobj))
return NULL;
if (posobj == Py_None || posobj == NULL) {
/* Get the current position. */
posobj = portable_lseek(fd, NULL, 1);
if (posobj == NULL)
return NULL;
}
else {
Py_INCREF(posobj);
}
int ret;
int fd;
fd = self->fd;
if (fd < 0)
return err_closed();
if (!self->writable)
return err_mode("writing");
if (!PyArg_ParseTuple(args, "|O", &posobj))
return NULL;
if (posobj == Py_None || posobj == NULL) {
/* Get the current position. */
posobj = portable_lseek(fd, NULL, 1);
if (posobj == NULL)
return NULL;
}
else {
Py_INCREF(posobj);
}
#ifdef MS_WINDOWS
/* MS _chsize doesn't work if newsize doesn't fit in 32 bits,
so don't even try using it. */
{
PyObject *oldposobj, *tempposobj;
HANDLE hFile;
/* we save the file pointer position */
oldposobj = portable_lseek(fd, NULL, 1);
if (oldposobj == NULL) {
Py_DECREF(posobj);
return NULL;
}
/* we then move to the truncation position */
tempposobj = portable_lseek(fd, posobj, 0);
if (tempposobj == NULL) {
Py_DECREF(oldposobj);
Py_DECREF(posobj);
return NULL;
}
Py_DECREF(tempposobj);
/* Truncate. Note that this may grow the file! */
Py_BEGIN_ALLOW_THREADS
errno = 0;
hFile = (HANDLE)_get_osfhandle(fd);
ret = hFile == (HANDLE)-1; /* testing for INVALID_HANDLE value */
if (ret == 0) {
ret = SetEndOfFile(hFile) == 0;
if (ret)
errno = EACCES;
}
Py_END_ALLOW_THREADS
/* we restore the file pointer position in any case */
tempposobj = portable_lseek(fd, oldposobj, 0);
Py_DECREF(oldposobj);
if (tempposobj == NULL) {
Py_DECREF(posobj);
return NULL;
}
Py_DECREF(tempposobj);
}
/* MS _chsize doesn't work if newsize doesn't fit in 32 bits,
so don't even try using it. */
{
PyObject *oldposobj, *tempposobj;
HANDLE hFile;
/* we save the file pointer position */
oldposobj = portable_lseek(fd, NULL, 1);
if (oldposobj == NULL) {
Py_DECREF(posobj);
return NULL;
}
/* we then move to the truncation position */
tempposobj = portable_lseek(fd, posobj, 0);
if (tempposobj == NULL) {
Py_DECREF(oldposobj);
Py_DECREF(posobj);
return NULL;
}
Py_DECREF(tempposobj);
/* Truncate. Note that this may grow the file! */
Py_BEGIN_ALLOW_THREADS
errno = 0;
hFile = (HANDLE)_get_osfhandle(fd);
ret = hFile == (HANDLE)-1; /* testing for INVALID_HANDLE value */
if (ret == 0) {
ret = SetEndOfFile(hFile) == 0;
if (ret)
errno = EACCES;
}
Py_END_ALLOW_THREADS
/* we restore the file pointer position in any case */
tempposobj = portable_lseek(fd, oldposobj, 0);
Py_DECREF(oldposobj);
if (tempposobj == NULL) {
Py_DECREF(posobj);
return NULL;
}
Py_DECREF(tempposobj);
}
#else
#if defined(HAVE_LARGEFILE_SUPPORT)
pos = PyLong_AsLongLong(posobj);
pos = PyLong_AsLongLong(posobj);
#else
pos = PyLong_AsLong(posobj);
pos = PyLong_AsLong(posobj);
#endif
if (PyErr_Occurred()){
Py_DECREF(posobj);
return NULL;
}
if (PyErr_Occurred()){
Py_DECREF(posobj);
return NULL;
}
Py_BEGIN_ALLOW_THREADS
errno = 0;
ret = ftruncate(fd, pos);
Py_END_ALLOW_THREADS
Py_BEGIN_ALLOW_THREADS
errno = 0;
ret = ftruncate(fd, pos);
Py_END_ALLOW_THREADS
#endif /* !MS_WINDOWS */
if (ret != 0) {
Py_DECREF(posobj);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
if (ret != 0) {
Py_DECREF(posobj);
PyErr_SetFromErrno(PyExc_IOError);
return NULL;
}
return posobj;
return posobj;
}
#endif /* HAVE_FTRUNCATE */
static char *
mode_string(fileio *self)
{
if (self->readable) {
if (self->writable)
return "rb+";
else
return "rb";
}
else
return "wb";
if (self->readable) {
if (self->writable)
return "rb+";
else
return "rb";
}
else
return "wb";
}
static PyObject *
fileio_repr(fileio *self)
{
PyObject *nameobj, *res;
if (self->fd < 0)
return PyString_FromFormat("<_io.FileIO [closed]>");
nameobj = PyObject_GetAttrString((PyObject *) self, "name");
if (nameobj == NULL) {
if (PyErr_ExceptionMatches(PyExc_AttributeError))
PyErr_Clear();
else
return NULL;
res = PyString_FromFormat("<_io.FileIO fd=%d mode='%s'>",
self->fd, mode_string(self));
}
else {
PyObject *repr = PyObject_Repr(nameobj);
Py_DECREF(nameobj);
if (repr == NULL)
return NULL;
res = PyString_FromFormat("<_io.FileIO name=%s mode='%s'>",
PyString_AS_STRING(repr),
mode_string(self));
Py_DECREF(repr);
}
return res;
PyObject *nameobj, *res;
if (self->fd < 0)
return PyString_FromFormat("<_io.FileIO [closed]>");
nameobj = PyObject_GetAttrString((PyObject *) self, "name");
if (nameobj == NULL) {
if (PyErr_ExceptionMatches(PyExc_AttributeError))
PyErr_Clear();
else
return NULL;
res = PyString_FromFormat("<_io.FileIO fd=%d mode='%s'>",
self->fd, mode_string(self));
}
else {
PyObject *repr = PyObject_Repr(nameobj);
Py_DECREF(nameobj);
if (repr == NULL)
return NULL;
res = PyString_FromFormat("<_io.FileIO name=%s mode='%s'>",
PyString_AS_STRING(repr),
mode_string(self));
Py_DECREF(repr);
}
return res;
}
static PyObject *
fileio_isatty(fileio *self)
{
long res;
if (self->fd < 0)
return err_closed();
Py_BEGIN_ALLOW_THREADS
res = isatty(self->fd);
Py_END_ALLOW_THREADS
return PyBool_FromLong(res);
long res;
if (self->fd < 0)
return err_closed();
Py_BEGIN_ALLOW_THREADS
res = isatty(self->fd);
Py_END_ALLOW_THREADS
return PyBool_FromLong(res);
}
......@@ -924,7 +924,7 @@ PyDoc_STRVAR(fileio_doc,
"file(name: str[, mode: str]) -> file IO 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"
"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 '+' to the mode to allow simultaneous\n"
"reading and writing.");
......@@ -966,14 +966,14 @@ PyDoc_STRVAR(seek_doc,
#ifdef HAVE_FTRUNCATE
PyDoc_STRVAR(truncate_doc,
"truncate([size: int]) -> None. Truncate the file to at most size bytes.\n"
"truncate([size: int]) -> None. Truncate the file to at most size bytes.\n"
"\n"
"Size defaults to the current file position, as returned by tell()."
"The current file position is changed to the value of size.");
#endif
PyDoc_STRVAR(tell_doc,
"tell() -> int. Current file position");
"tell() -> int. Current file position");
PyDoc_STRVAR(readinto_doc,
"readinto() -> Same as RawIOBase.readinto().");
......@@ -997,22 +997,22 @@ PyDoc_STRVAR(writable_doc,
"writable() -> bool. True if file was opened in a write mode.");
static PyMethodDef fileio_methods[] = {
{"read", (PyCFunction)fileio_read, METH_VARARGS, read_doc},
{"readall", (PyCFunction)fileio_readall, METH_NOARGS, readall_doc},
{"readinto", (PyCFunction)fileio_readinto, METH_VARARGS, readinto_doc},
{"write", (PyCFunction)fileio_write, METH_VARARGS, write_doc},
{"seek", (PyCFunction)fileio_seek, METH_VARARGS, seek_doc},
{"tell", (PyCFunction)fileio_tell, METH_VARARGS, tell_doc},
{"read", (PyCFunction)fileio_read, METH_VARARGS, read_doc},
{"readall", (PyCFunction)fileio_readall, METH_NOARGS, readall_doc},
{"readinto", (PyCFunction)fileio_readinto, METH_VARARGS, readinto_doc},
{"write", (PyCFunction)fileio_write, METH_VARARGS, write_doc},
{"seek", (PyCFunction)fileio_seek, METH_VARARGS, seek_doc},
{"tell", (PyCFunction)fileio_tell, METH_VARARGS, tell_doc},
#ifdef HAVE_FTRUNCATE
{"truncate", (PyCFunction)fileio_truncate, METH_VARARGS, truncate_doc},
{"truncate", (PyCFunction)fileio_truncate, METH_VARARGS, truncate_doc},
#endif
{"close", (PyCFunction)fileio_close, METH_NOARGS, close_doc},
{"seekable", (PyCFunction)fileio_seekable, METH_NOARGS, seekable_doc},
{"readable", (PyCFunction)fileio_readable, METH_NOARGS, readable_doc},
{"writable", (PyCFunction)fileio_writable, METH_NOARGS, writable_doc},
{"fileno", (PyCFunction)fileio_fileno, METH_NOARGS, fileno_doc},
{"isatty", (PyCFunction)fileio_isatty, METH_NOARGS, isatty_doc},
{NULL, NULL} /* sentinel */
{"close", (PyCFunction)fileio_close, METH_NOARGS, close_doc},
{"seekable", (PyCFunction)fileio_seekable, METH_NOARGS, seekable_doc},
{"readable", (PyCFunction)fileio_readable, METH_NOARGS, readable_doc},
{"writable", (PyCFunction)fileio_writable, METH_NOARGS, writable_doc},
{"fileno", (PyCFunction)fileio_fileno, METH_NOARGS, fileno_doc},
{"isatty", (PyCFunction)fileio_isatty, METH_NOARGS, isatty_doc},
{NULL, NULL} /* sentinel */
};
/* 'closed' and 'mode' are attributes for backwards compatibility reasons. */
......@@ -1020,68 +1020,68 @@ static PyMethodDef fileio_methods[] = {
static PyObject *
get_closed(fileio *self, void *closure)
{
return PyBool_FromLong((long)(self->fd < 0));
return PyBool_FromLong((long)(self->fd < 0));
}
static PyObject *
get_closefd(fileio *self, void *closure)
{
return PyBool_FromLong((long)(self->closefd));
return PyBool_FromLong((long)(self->closefd));
}
static PyObject *
get_mode(fileio *self, void *closure)
{
return PyUnicode_FromString(mode_string(self));
return PyUnicode_FromString(mode_string(self));
}
static PyGetSetDef fileio_getsetlist[] = {
{"closed", (getter)get_closed, NULL, "True if the file is closed"},
{"closefd", (getter)get_closefd, NULL,
"True if the file descriptor will be closed"},
{"mode", (getter)get_mode, NULL, "String giving the file mode"},
{NULL},
{"closed", (getter)get_closed, NULL, "True if the file is closed"},
{"closefd", (getter)get_closefd, NULL,
"True if the file descriptor will be closed"},
{"mode", (getter)get_mode, NULL, "String giving the file mode"},
{NULL},
};
PyTypeObject PyFileIO_Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"_io.FileIO",
sizeof(fileio),
0,
(destructor)fileio_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
(reprfunc)fileio_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE
| Py_TPFLAGS_HAVE_GC, /* tp_flags */
fileio_doc, /* tp_doc */
(traverseproc)fileio_traverse, /* tp_traverse */
(inquiry)fileio_clear, /* tp_clear */
0, /* tp_richcompare */
offsetof(fileio, weakreflist), /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
fileio_methods, /* tp_methods */
0, /* tp_members */
fileio_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
offsetof(fileio, dict), /* tp_dictoffset */
fileio_init, /* tp_init */
PyType_GenericAlloc, /* tp_alloc */
fileio_new, /* tp_new */
PyObject_GC_Del, /* tp_free */
PyVarObject_HEAD_INIT(NULL, 0)
"_io.FileIO",
sizeof(fileio),
0,
(destructor)fileio_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
(reprfunc)fileio_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
PyObject_GenericGetAttr, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE
| Py_TPFLAGS_HAVE_GC, /* tp_flags */
fileio_doc, /* tp_doc */
(traverseproc)fileio_traverse, /* tp_traverse */
(inquiry)fileio_clear, /* tp_clear */
0, /* tp_richcompare */
offsetof(fileio, weakreflist), /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
fileio_methods, /* tp_methods */
0, /* tp_members */
fileio_getsetlist, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
offsetof(fileio, dict), /* tp_dictoffset */
fileio_init, /* tp_init */
PyType_GenericAlloc, /* tp_alloc */
fileio_new, /* tp_new */
PyObject_GC_Del, /* tp_free */
};
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