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#include "Python.h"
#include "Imaging.h"
Py_ssize_t
_imaging_read_pyFd(PyObject *fd, char *dest, Py_ssize_t bytes) {
/* dest should be a buffer bytes long, returns length of read
-1 on error */
PyObject *result;
char *buffer;
Py_ssize_t length;
int bytes_result;
result = PyObject_CallMethod(fd, "read", "n", bytes);
bytes_result = PyBytes_AsStringAndSize(result, &buffer, &length);
if (bytes_result == -1) {
goto err;
}
if (length > bytes) {
goto err;
}
memcpy(dest, buffer, length);
Py_DECREF(result);
return length;
err:
Py_DECREF(result);
return -1;
}
Py_ssize_t
_imaging_write_pyFd(PyObject *fd, char *src, Py_ssize_t bytes) {
PyObject *result;
PyObject *byteObj;
byteObj = PyBytes_FromStringAndSize(src, bytes);
result = PyObject_CallMethod(fd, "write", "O", byteObj);
Py_DECREF(byteObj);
Py_DECREF(result);
return bytes;
}
int
_imaging_seek_pyFd(PyObject *fd, Py_ssize_t offset, int whence) {
PyObject *result;
result = PyObject_CallMethod(fd, "seek", "ni", offset, whence);
Py_DECREF(result);
return 0;
}
Py_ssize_t
_imaging_tell_pyFd(PyObject *fd) {
PyObject *result;
Py_ssize_t location;
result = PyObject_CallMethod(fd, "tell", NULL);
location = PyLong_AsSsize_t(result);
Py_DECREF(result);
return location;
}
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