qt-everywhere-src-5.15.1/qtbase/src/xml/doc/snippets/simpleparse/main.cpp

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#include <qfile.h>
#include <qxml.h>
#include "handler.h"

#include <iostream>

int main(int argc, char **argv)
{
    if (argc != 2) {
        std::cout << "Usage: " << argv[0] << " <filename>" << std::endl;
        return 1;
    }

    QFile *file = new QFile(argv[1]);

//! [0]
    QXmlSimpleReader xmlReader;
    QXmlInputSource *source = new QXmlInputSource(file);
//! [0]

//! [1]
    Handler *handler = new Handler;
    xmlReader.setContentHandler(handler);
    xmlReader.setErrorHandler(handler);
//! [1]

//! [2]
    bool ok = xmlReader.parse(source);

    if (!ok)
        std::cout << "Parsing failed." << std::endl;
//! [2]
    else {
        QStringList names = handler->names();
        QList<int> indentations = handler->indentations();

        int items = names.count();

        for (int i = 0; i < items; ++i) {
            for (int j = 0; j < indentations[i]; ++j)
                std::cout << ' ';
            std::cout << names[i].toLocal8Bit().constData() << std::endl;
        }
    }

    return 0;
}