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//=============================================================================

//

//      test_menu.c - Cyclone Diagnostics

//

//=============================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

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// or inline functions from this file, or you compile this file and link it

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//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   Scott Coulter, Jeff Frazier, Eric Breeden

// Contributors:

// Date:        2001-01-25

// Purpose:     

// Description: 

//

//####DESCRIPTIONEND####

//

//===========================================================================*/

/*****************************************************************************

* test_menu.c - Menu dispatching routine

*

* modification history

* --------------------

* 30aug00 ejb Ported to IQ80310 Cygmon

*/

/*

DESCRIPTION:

A table-driven menu dispatcher

*/

#include "test_menu.h"

#include "iq80310.h"

#define QUIT                    -1

#define MAX_INPUT_LINE_SIZE     80

extern long decIn(void);

/*

 * Internal routines

 */

static int menuGetChoice (MENU_ITEM     menuTable[],

                          int           numMenuItems,

                          char          *title,

                          unsigned long options);

static void printMenu (MENU_ITEM        menuTable[],

                       int              numMenuItems,

                       char             *title);

/***************************************************************************

*

* menu - a table-driven menu dispatcher

*

* RETURNS:

*

*       The menu item argument, or NULL if the item chosen is QUIT.

*/

MENU_ARG menu (

    MENU_ITEM   menuTable[],

    int         numMenuItems,

    char                *title,

    unsigned long       options

    )

{

    int item;           /* User's menu item choice */

    /*

     * Get the user's first choice.  Always display the menu the first time.

     */

    item = menuGetChoice (menuTable, numMenuItems, title, MENU_OPT_NONE);

    if (item == QUIT)

        return (NULL);

    /*

     * If the user just wants a value returned, return the argument.  If the

     * argument is null, return the item number itself.

     */

    if (options & MENU_OPT_VALUE) {

        if (menuTable[item].arg == NULL)

            return ((void *)item);

        else

            return (menuTable[item].arg);

    }

    /*

     * Process menu items until the user selects QUIT

     */

    while (TRUE) {

        /*

         * Call the action routine for the chosen item.  If the argument is

         * NULL, pass the item number itself.

         */

        if (menuTable[item].actionRoutine != NULL) {

            if (menuTable[item].arg == NULL) {

                printf("\n");

                (*menuTable[item].actionRoutine) ((void *)item);

            } else {

                printf("\n");

                (*menuTable[item].actionRoutine)(menuTable[item].arg);

            }

        }

        /*

         * Get the next choice, using any display options the user specified.

         */

        item = menuGetChoice (menuTable, numMenuItems, title, options);

        if (item == QUIT)

            return (NULL);

    }

}

/***************************************************************************

*

* menuGetChoice - Get the user's menu choice.

*

* If display is not suppressed, display the menu, then prompt the user for

* a choice.  If the choice is out of range or invalid, display the menu and

* prompt again.  Continue to display and prompt until a valid choice is made.

*

* RETURNS:

*       The item number of the user's menu choice. (-1 if they chose QUIT)

*/

static int

menuGetChoice (MENU_ITEM        menuTable[],

               int              numMenuItems,

               char             *title,

               unsigned long    options

               )

{

    int choice;

    /*

     * Suppress display of the menu the first time if we're asked

     */

    if (!(options & MENU_OPT_SUPPRESS_DISP))

        printMenu (menuTable, numMenuItems, title);

    /*

     * Prompt for a selection.  Redisplay the menu and prompt again

     * if there's an error in the selection.

     */

    choice = -1;

    while (choice < 0 || choice > numMenuItems) {

        printf ("\nEnter the menu item number (0 to quit): ");

        choice = decIn ();

        if (choice < 0 || choice > numMenuItems)

            printMenu (menuTable, numMenuItems, title);

    }

    if (choice == 0)

        return (QUIT);

    return (choice - 1);

}

/***************************************************************************

*

* printMenu - Print the menu

*

*

*/

static void

printMenu (MENU_ITEM    menuTable[],

           int          numMenuItems,

           char         *title

           )

{

    int         i;

    printf("\n%s\n\n", title);

    for (i = 0; i < numMenuItems; i++)

        printf ("%2d - %s\n", i+1, menuTable[i].itemName);

    printf(" 0 - quit");

}