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#include "textprogressbar.h"

#include <QByteArray>

#include <stdio.h>

TextProgressBar::TextProgressBar()

    : value(0), maximum(-1), iteration(0)

{

}

void TextProgressBar::clear()

{

    printf("\n");

    fflush(stdout);

    iteration = 0;

    value = 0;

    maximum = -1;

}

void TextProgressBar::update()

{

    ++iteration;

    if (maximum > 0) {

        // we know the maximum

        // draw a progress bar

        int percent = value * 100 / maximum;

        int hashes = percent / 2;

        QByteArray progressbar(hashes, '#');

        if (percent % 2)

            progressbar += '>';

        printf("\r[%-50s] %3d%% %s     ",

               progressbar.constData(),

               percent,

               qPrintable(message));

    } else {

        // we don't know the maximum, so we can't draw a progress bar

        int center = (iteration % 48) + 1; // 50 spaces, minus 2

        QByteArray before(qMax(center - 2, 0), ' ');

        QByteArray after(qMin(center + 2, 50), ' ');

        printf("\r[%s###%s]      %s      ",

               before.constData(), after.constData(), qPrintable(message));

    }

}

void TextProgressBar::setMessage(const QString &m)

{

    message = m;

}

void TextProgressBar::setStatus(qint64 val, qint64 max)

{

    value = val;

    maximum = max;

}