Function convert_dirname

mysys/mf_dirname.c:104–154

#endif

char *convert_dirname(char *to, const char *from, const char *from_end)
{
  char *to_org=to;
#ifdef BACKSLASH_MBTAIL
  CHARSET_INFO *fs= fs_character_set();
#endif
  DBUG_ENTER("convert_dirname");

  /* We use -2 here, becasue we need place for the last FN_LIBCHAR */
  if (!from_end || (from_end - from) > FN_REFLEN-2)
    from_end=from+FN_REFLEN -2;

#if FN_LIBCHAR != '/'
  {
    for (; from != from_end && *from ; from++)
    {
      if (*from == '/')
	*to++= FN_LIBCHAR;
      else
      {
#ifdef BACKSLASH_MBTAIL
        uint l;
        if (use_mb(fs) && (l= my_ismbchar(fs, from, from + 3)))
        {
          memmove(to, from, l);
          to+= l;
          from+= l - 1;
          to_org= to; /* Don't look inside mbchar */
        }
        else
#endif
        {
          *to++= *from;
        }
      }
    }
    *to=0;
  }
#else
  /* This is ok even if to == from, becasue we need to cut the string */
  to= strmake(to, from, (size_t) (from_end-from));
#endif

  /* Add FN_LIBCHAR to the end of directory path */
  if (to != to_org && (to[-1] != FN_LIBCHAR && to[-1] != FN_DEVCHAR))
  {
    *to++=FN_LIBCHAR;
    *to=0;
  }
  DBUG_RETURN(to);                              /* Pointer to end of dir */
} /* convert_dirname */