RDLG - Reliable/Fast Dialog Processor | Faster/Shorter

/*
            .................................
            RDLG
              Reliable/Fast Dialog Processor
            .................................

Description:
    This is a little include that uses OnPlayerDialogResponse( ) to process players Dialogs.
    Each dialog has his own function like the Command Processors( ZCMD, DCMD, YCMD ),
    such method is much faster than the normal way.

License:
    The contents of this file are subject to the Mozilla Public License Version
    1.1 (the "License"); you may not use this file except in compliance with
    the License. You may obtain a copy of the License at
    http://www.mozilla.org/MPL/

*/
#tryinclude <YSI\y_hooks>

#if defined _rdlg_included
    #endinput
#endif
#define _rdlg_included

#define DIALOG:%1(%2)                       \
            forward dlg_%1(%2);             \
            public dlg_%1(%2)

#define DLG:%1(%2)                          \
            DIALOG:%1(%2)

#if !defined isnull
    #define isnull(%1)                      \
            ((!(%1[0])) || (((%1[0]) == '\1') && (!(%1[1]))))
#endif

new  s_g_Dialog[ 25 ];

#if defined _INC_y_hooks
    Hook:RDLG_OnDialogResponse( playerid, dialogid, response, listitem, inputtext[ ] )
#else
    public OnDialogResponse( playerid, dialogid, response, listitem, inputtext[ ] )
#endif
{
    new _D[ 10 ]; valstr( _D, dialogid, true );
    strcat( s_g_Dialog, "dlg_" );
    strcat( s_g_Dialog, _D );

    //if( inputtext[ 0 ] == '\0' ) return CallLocalFunction( s_g_Dialog, "iiis", playerid, response, listitem, "\1" );

    return CallLocalFunction( s_g_Dialog, "iiis", playerid, response, listitem, ( inputtext[ 0 ] == '\0' ) ? ( "\1" ) : ( inputtext ) );
}

#if !defined _INC_y_hooks
    #if defined _ALS_OnDialogResponse
        #undef OnDialogResponse
    #else
        #define _ALS_OnDialogResponse
    #endif
    #define OnDialogResponse rdlg_OnDialogResponse
    forward rdlg_OnDialogResponse( playerid, dialogid, response, listitem, inputtext[ ] );
#endif