linktop: new Linktop specific +CFUN? response parser

We handle all known CFUN? response values in the new parser, and report an error
if an unknown value is found.

plugins/linktop/mm-modem-helpers-linktop.c

@@ -0,0 +1,55 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details:
+ *
+ * Copyright (C) 2008 - 2009 Novell, Inc.
+ * Copyright (C) 2009 - 2016 Red Hat, Inc.
+ * Copyright (C) 2016 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#include "mm-log.h"
+#include "mm-modem-helpers.h"
+#include "mm-modem-helpers-linktop.h"
+
+/*****************************************************************************/
+
+gboolean
+mm_linktop_parse_cfun_query_current_modes (const gchar  *response,
+                                           MMModemMode  *allowed,
+                                           GError      **error)
+{
+    guint state;
+
+    g_assert (allowed);
+
+    if (!mm_3gpp_parse_cfun_query_response (response, &state, error))
+        return FALSE;
+
+    switch (state) {
+    case LINKTOP_MODE_OFFLINE:
+    case LINKTOP_MODE_LOW_POWER:
+        *allowed = MM_MODEM_MODE_NONE;
+        return TRUE;
+    case LINKTOP_MODE_2G:
+        *allowed = MM_MODEM_MODE_2G;
+        return TRUE;
+    case LINKTOP_MODE_3G:
+        *allowed = MM_MODEM_MODE_3G;
+        return TRUE;
+    case LINKTOP_MODE_ANY:
+        *allowed = (MM_MODEM_MODE_2G | MM_MODEM_MODE_3G);
+        return TRUE;
+    default:
+        g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
+                     "Unknown linktop +CFUN current mode: %u", state);
+        return FALSE;
+    }
+}