qt-everywhere-src-5.15.1/qtbase/util/gradientgen/tobinaryjson.cpp

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** This file is part of the utils of the Qt Toolkit.
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#include <iostream>

#include <qdebug.h>
#include <qjsondocument.h>

using namespace std;

int main()
{
    QByteArray json;
    while (!cin.eof()) {
        char arr[1024];
        cin.read(arr, sizeof(arr));
        json.append(arr, cin.gcount());
    }

    QJsonParseError error;
    QJsonDocument document = QJsonDocument::fromJson(json, &error);
    if (document.isNull()) {
        qDebug() << "error:" << qPrintable(error.errorString()) << "at offset" << error.offset;
        return 1;
    }

    QByteArray binaryJson = document.toBinaryData();
    cout.write(binaryJson.constData(), binaryJson.size());
}