util/id.c

   1 /*
   2  * Dealing with identifiers
   3  *
   4  * Copyright (C) 2014 Red Hat, Inc.
   5  *
   6  * Authors:
   7  *  Markus Armbruster <armbru@redhat.com>,
   8  *
   9  * This work is licensed under the terms of the GNU LGPL, version 2.1
  10  * or later.  See the COPYING.LIB file in the top-level directory.
  11  */
  12
  13 #include "qemu-common.h"
  14
  15 bool id_wellformed(const char *id)
  16 {
  17     int i;
  18
  19     if (!qemu_isalpha(id[0])) {
  20         return false;
  21     }
  22     for (i = 1; id[i]; i++) {
  23         if (!qemu_isalnum(id[i]) && !strchr("-._", id[i])) {
  24             return false;
  25         }
  26     }
  27     return true;
  28 }