+/**
+ * Add an additional search directory for the protocol decoders.
+ *
+ * The specified directory is prepended (not appended!) to Python's sys.path,
+ * in order to search for sigrok protocol decoders in the specified
+ * directories first, and in the generic Python module directories (and in
+ * the current working directory) last. This avoids conflicts if there are
+ * Python modules which have the same name as a sigrok protocol decoder in
+ * sys.path or in the current working directory.
+ *
+ * @param path Path to an extra directory containing protocol decoders
+ * which will be added to the python sys.path, or NULL.
+ *
+ * @return SRD_OK upon success, a (negative) error code otherwise.
+ */
+SRD_PRIV int add_modulepath(const char *path)
+{
+ PyObject *py_cur_path, *py_item;
+ GString *new_path;
+ int wc_len, i;
+ wchar_t *wc_new_path;
+ char *item;
+
+ srd_dbg("adding %s to module path", path);
+
+ new_path = g_string_sized_new(256);
+ g_string_assign(new_path, g_strdup(path));
+ py_cur_path = PySys_GetObject("path");
+ for (i = 0; i < PyList_Size(py_cur_path); i++) {
+ g_string_append(new_path, g_strdup(G_SEARCHPATH_SEPARATOR_S));
+ py_item = PyList_GetItem(py_cur_path, i);
+ if (!PyUnicode_Check(py_item))
+ /* Shouldn't happen. */
+ continue;
+ if (py_str_as_str(py_item, &item) != SRD_OK)
+ continue;
+ g_string_append(new_path, item);
+ }
+
+ /* Convert to wide chars. */
+ wc_len = sizeof(wchar_t) * (new_path->len + 1);
+ if (!(wc_new_path = g_try_malloc(wc_len))) {
+ srd_dbg("malloc failed");
+ return SRD_ERR_MALLOC;
+ }
+ mbstowcs(wc_new_path, new_path->str, wc_len);
+ PySys_SetPath(wc_new_path);
+ g_string_free(new_path, TRUE);
+ g_free(wc_new_path);
+
+//#ifdef _WIN32
+// gchar **splitted;
+//
+// /*
+// * On Windows/MinGW, Python's sys.path needs entries of the form
+// * 'C:\\foo\\bar' instead of '/foo/bar'.
+// */
+//
+// splitted = g_strsplit(DECODERS_DIR, "/", 0);
+// path = g_build_pathv("\\\\", splitted);
+// g_strfreev(splitted);
+//#else
+// path = g_strdup(DECODERS_DIR);
+//#endif
+
+ return SRD_OK;
+}