qemu/include/qemu/help_option.h
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   1#ifndef QEMU_HELP_OPTION_H
   2#define QEMU_HELP_OPTION_H
   3
   4/**
   5 * is_help_option:
   6 * @s: string to test
   7 *
   8 * Check whether @s is one of the standard strings which indicate
   9 * that the user is asking for a list of the valid values for a
  10 * command option like -cpu or -M. The current accepted strings
  11 * are 'help' and '?'. '?' is deprecated (it is a shell wildcard
  12 * which makes it annoying to use in a reliable way) but provided
  13 * for backwards compatibility.
  14 *
  15 * Returns: true if @s is a request for a list.
  16 */
  17static inline bool is_help_option(const char *s)
  18{
  19    return !strcmp(s, "?") || !strcmp(s, "help");
  20}
  21
  22static inline int starts_with_help_option(const char *s)
  23{
  24    if (*s == '?') {
  25        return 1;
  26    }
  27    if (g_str_has_prefix(s, "help")) {
  28        return 4;
  29    }
  30    return 0;
  31}
  32
  33#endif
  34