//============================================================================
// Product: Board Support Package (BSP) for the Calculator example
// Last Updated for Version: 6.9.0
// Date of the Last Update:  2020-08-25
//
//                    Q u a n t u m  L e a P s
//                    ------------------------
//                    Modern Embedded Software
//
// Copyright (C) 2005-2020 Quantum Leaps, LLC. All rights reserved.
//
// This program is open source software: you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Alternatively, this program may be distributed and modified under the
// terms of Quantum Leaps commercial licenses, which expressly supersede
// the GNU General Public License and are specifically designed for
// licensees interested in retaining the proprietary status of their code.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <www.gnu.org/licenses/>.
//
// Contact information:
// <www.state-machine.com/licensing>
// <info@state-machine.com>
//============================================================================
#include "qpcpp.hpp"
#include "bsp.hpp"

#include "safe_std.h"   // portable "safe" <stdio.h>/<string.h> facilities
#include <stdlib.h>

using namespace QP;
using namespace std;

#define DISP_WIDTH      15

/* helper macros to "stringify" values */
#define VAL(x) #x
#define STRINGIFY(x) VAL(x)

static char l_display[DISP_WIDTH + 1]; // the calculator display
static int  l_len; // number of displayed characters

//............................................................................
void BSP_clear(void) {
    memset(l_display, ' ', DISP_WIDTH - 1);
    l_display[DISP_WIDTH - 1] = '0';
    l_display[DISP_WIDTH] = '\0';
    l_len = 0;
}
//............................................................................
void BSP_insert(int keyId) {
    if (l_len == 0) {
        l_display[DISP_WIDTH - 1] = (char)keyId;
        ++l_len;
    }
    else if (l_len < (DISP_WIDTH - 1)) {
        MEMMOVE_S(&l_display[0], DISP_WIDTH, &l_display[1], DISP_WIDTH - 1);
        l_display[DISP_WIDTH - 1] = (char)keyId;
        ++l_len;
    }
}
//............................................................................
void BSP_display(double value) {
    SNPRINTF_S(l_display, DISP_WIDTH, "%10.7g", value);
}
//............................................................................
void BSP_display_error(char const *err) {
    STRNCPY_S(l_display, DISP_WIDTH, err);
}
//............................................................................
void BSP_negate(void) {
    BSP_clear();
    l_display[DISP_WIDTH - 2] = '-';
}
//............................................................................
void BSP_show_display(void) {
    PRINTF_S("\n[%" STRINGIFY(DISP_WIDTH) "s] ", l_display);
}
//............................................................................
void BSP_exit(void) {
    PRINTF_S("\n%s\n", "Bye! Bye!");
    fflush(stdout);
    QF::onCleanup();
    exit(0);
}
//............................................................................
double BSP_get_value(void) {
    return strtod(l_display, (char **)0);
}
//............................................................................
void BSP_message(char const *msg) {
    PRINTF_S("%s", msg);
}

namespace QP {
/*..........................................................................*/
void QF::onStartup(void) {
    QF::consoleSetup();
}
/*..........................................................................*/
void QF::onCleanup(void) {
    QF::consoleCleanup();
}
/*..........................................................................*/
void QF::onClockTick(void) {
}

} // namespace QP

//............................................................................
// this function is used by the QP embedded systems-friendly assertions
extern "C" Q_NORETURN Q_onError(char const * const module, int_t const loc) {
    FPRINTF_S(stderr, "Assertion failed in %s:%d", module, loc);
    QF::onCleanup();
    exit(-1);
}