1 files changed, 70 insertions, 0 deletions
diff --git a/sources/shiboken6/libshiboken/shibokenbuffer.cpp b/sources/shiboken6/libshiboken/shibokenbuffer.cpp
new file mode 100644
index 000000000..d04613895
--- /dev/null
+++ b/sources/shiboken6/libshiboken/shibokenbuffer.cpp
@@ -0,0 +1,70 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#include "shibokenbuffer.h"
+#include <cstdlib>
+#include <cstring>
+
+bool Shiboken::Buffer::checkType(PyObject *pyObj)
+{
+    return PyObject_CheckBuffer(pyObj) != 0;
+}
+
+void *Shiboken::Buffer::getPointer(PyObject *pyObj, Py_ssize_t *size)
+{
+    Py_buffer view;
+    if (PyObject_GetBuffer(pyObj, &view, PyBUF_ND) == 0) {
+        if (size)
+            *size = view.len;
+        PyBuffer_Release(&view);
+        return view.buf;
+    }
+    return nullptr;
+}
+
+void *Shiboken::Buffer::copyData(PyObject *pyObj, Py_ssize_t *sizeIn)
+{
+    void *result = nullptr;
+    Py_ssize_t size = 0;
+
+    Py_buffer view;
+    if (PyObject_GetBuffer(pyObj, &view, PyBUF_ND) == 0) {
+        size = view.len;
+        if (size) {
+            result = std::malloc(size);
+            if (result != nullptr)
+                std::memcpy(result, view.buf, size);
+            else
+                size = 0;
+        }
+        PyBuffer_Release(&view);
+    }
+
+    if (sizeIn != nullptr)
+        *sizeIn = size;
+    return result;
+}
+
+PyObject *Shiboken::Buffer::newObject(void *memory, Py_ssize_t size, Type type)
+{
+    if (size == 0)
+        Py_RETURN_NONE;
+    Py_buffer view;
+    memset(&view, 0, sizeof(Py_buffer));
+    view.buf = memory;
+    view.len = size;
+    view.readonly = type == Shiboken::Buffer::ReadOnly;
+    view.ndim = 1;
+    view.itemsize = sizeof(char);
+    Py_ssize_t shape[] = { size };
+    view.shape = shape;
+    // Pep384: This is way too complicated and impossible with the limited api:
+    //return PyMemoryView_FromBuffer(&view);
+    return PyMemoryView_FromMemory(reinterpret_cast<char *>(view.buf),
+                                   size, type == ReadOnly ? PyBUF_READ : PyBUF_WRITE);
+}
+
+PyObject *Shiboken::Buffer::newObject(const void *memory, Py_ssize_t size)
+{
+    return newObject(const_cast<void *>(memory), size, ReadOnly);
+}