1 files changed, 43 insertions, 0 deletions
diff --git a/src/SWIG/_py3k_compat.i b/src/SWIG/_py3k_compat.i
new file mode 100644
index 0000000..7c90bb4
--- /dev/null
+++ b/src/SWIG/_py3k_compat.i
@@ -0,0 +1,43 @@
+%{
+#if PY_MAJOR_VERSION >= 3
+
+FILE* PyFile_AsFile(PyObject *pyfile) {
+    FILE* fp;
+    int fd;
+    const char *mode_str = NULL;
+    PyObject *mode_obj;
+
+    if ((fd = PyObject_AsFileDescriptor(pyfile)) == -1) {
+        PyErr_SetString(PyExc_BlockingIOError,
+                        "Cannot find file handler for the Python file!");
+        return NULL;
+    }
+
+    if ((mode_obj = PyObject_GetAttrString(pyfile, "mode")) == NULL) {
+        mode_str = "rb";
+        PyErr_Clear();
+    }
+    else {
+        /* convert to plain string
+         * note that error checking is embedded in the function
+         */
+        mode_str = PyUnicode_AsUTF8AndSize(mode_obj, NULL);
+    }
+
+    if((fp = fdopen(fd, mode_str)) == NULL) {
+         PyErr_SetFromErrno(PyExc_IOError);
+    }
+
+    Py_XDECREF(mode_obj);
+    return fp;
+}
+
+#else /* PY2K */
+
+#define PyLong_FromLong(x) PyInt_FromLong(x)
+#define PyUnicode_AsUTF8(x) PyString_AsString(x)
+#define PyUnicode_FromString(x) PyString_FromString(x)
+#define PyUnicode_Format(x, y) PyString_Format(x, y)
+
+#endif /* PY_MAJOR_VERSION */
+%}