modem-helpers: new +CFUN? response parser

src/mm-modem-helpers.c

@@ -1858,6 +1858,85 @@ out:
 
 /*************************************************************************/
 
+gboolean
+mm_3gpp_parse_cfun_query_response (const gchar  *response,
+                                   guint        *out_state,
+                                   GError      **error)
+{
+    GRegex     *r;
+    GMatchInfo *match_info;
+    GError     *inner_error = NULL;
+    guint       state = G_MAXUINT;
+
+    g_assert (out_state != NULL);
+
+    /* Response may be e.g.:
+     * +CFUN: 1,0
+     *   ..but we don't care about the second number
+     */
+    r = g_regex_new ("\\+CFUN: (\\d+)(?:,(?:\\d+))?(?:\\r\\n)?", 0, 0, NULL);
+    g_assert (r != NULL);
+
+    g_regex_match_full (r, response, strlen (response), 0, 0, &match_info, &inner_error);
+    if (inner_error)
+        goto out;
+
+    if (!g_match_info_matches (match_info)) {
+        inner_error = g_error_new (MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
+                                   "Couldn't parse +CFUN response: %s", response);
+        goto out;
+    }
+
+    if (!mm_get_uint_from_match_info (match_info, 1, &state)) {
+        inner_error = g_error_new (MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
+                                   "Couldn't read power state value");
+        goto out;
+    }
+
+    *out_state = state;
+
+out:
+    if (match_info)
+        g_match_info_free (match_info);
+    g_regex_unref (r);
+
+    if (inner_error) {
+        g_propagate_error (error, inner_error);
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+gboolean
+mm_3gpp_parse_cfun_query_generic_response (const gchar        *response,
+                                           MMModemPowerState  *out_state,
+                                           GError            **error)
+{
+    guint state;
+
+    if (!mm_3gpp_parse_cfun_query_response (response, &state, error))
+        return FALSE;
+
+    switch (state) {
+    case 0:
+        *out_state = MM_MODEM_POWER_STATE_OFF;
+        return TRUE;
+    case 1:
+        *out_state = MM_MODEM_POWER_STATE_ON;
+        return TRUE;
+    case 4:
+        *out_state = MM_MODEM_POWER_STATE_LOW;
+        return TRUE;
+    default:
+        g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED,
+                     "Unknown +CFUN state: %u", state);
+        return FALSE;
+    }
+}
+
+/*************************************************************************/
+
 static MMSmsStorage
 storage_from_str (const gchar *str)
 {