Make array().tofile() work with a new I/O object.
diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 3d8674c..7fe0b26 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1252,12 +1252,11 @@
{
FILE *fp;
+ if (self->ob_size == 0)
+ goto done;
+
fp = PyFile_AsFile(f);
- if (fp == NULL) {
- PyErr_SetString(PyExc_TypeError, "arg must be open file");
- return NULL;
- }
- if (self->ob_size > 0) {
+ if (fp != NULL) {
if (fwrite(self->ob_item, self->ob_descr->itemsize,
self->ob_size, fp) != (size_t)self->ob_size) {
PyErr_SetFromErrno(PyExc_IOError);
@@ -1265,6 +1264,31 @@
return NULL;
}
}
+ else {
+ Py_ssize_t nbytes = self->ob_size * self->ob_descr->itemsize;
+ /* Write 64K blocks at a time */
+ /* XXX Make the block size settable */
+ int BLOCKSIZE = 64*1024;
+ Py_ssize_t nblocks = (nbytes + BLOCKSIZE - 1) / BLOCKSIZE;
+ Py_ssize_t i;
+ for (i = 0; i < nblocks; i++) {
+ char* ptr = self->ob_item + i*BLOCKSIZE;
+ Py_ssize_t size = BLOCKSIZE;
+ PyObject *bytes, *res;
+ if (i*BLOCKSIZE + size > nbytes)
+ size = nbytes - i*BLOCKSIZE;
+ bytes = PyBytes_FromStringAndSize(ptr, size);
+ if (bytes == NULL)
+ return NULL;
+ res = PyObject_CallMethod(f, "write", "O",
+ bytes);
+ Py_DECREF(bytes);
+ if (res == NULL)
+ return NULL;
+ }
+ }
+
+ done:
Py_INCREF(Py_None);
return Py_None;
}