Converting file list to ModelPaths.lua (c++ souce)

#include <QCoreApplication>
#include <QString>
#include <QMap>
#include <QFile>
#include <QVector>
#include <QStringList>
#include <QDebug>

class Node
{
public:
    QByteArray name;
    QVector<Node> children;
};

bool operator<(const Node &a, const Node &b)
{
    return a.name.toLower() < b.name.toLower();
}

bool operator<(const Node &a, const QByteArray &b)
{
    return a.name.toLower() < b.toLower();
}

void appendNode(QByteArray &result, const Node &n, int indentation)
{
    QByteArray indentString(indentation, ' ');
    result += indentString + "{value = \"" + n.name + "\",\n"
            + indentString + "text = \"" + n.name + "\"";
    if(n.children.isEmpty()) {
        result += "},\n";
    } else {
        result += ",\n";
        result += indentString + "  children = {\n";
        foreach (const Node &n, n.children)
            appendNode(result, n, indentation + 4);
        result += indentString +"  }\n";
        result += indentString +"},\n";
    }
}

void insertNodes(QVector<Node> &root, const QList<QByteArray> parts, int index)
{
    if (index >= parts.size())
        return;

    Node n;
    n.name = parts.at(index);

    auto it = std::lower_bound(root.begin(), root.end(), n.name);
    if (it == root.end() || (*it).name.toLower() != n.name.toLower())
        it = root.insert(it, n);

    insertNodes((*it).children, parts, index + 1);
}

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    if (a.arguments().size() < 2)
        return -1;

    QFile inputFile(a.arguments().at(1));
    inputFile.open(QIODevice::ReadOnly);

    QVector<Node> rootNodes;

    qDebug() << "reading...";
    // read
    while (!inputFile.atEnd()) {
        QByteArray line = inputFile.readLine();
        line = line.trimmed();
        if (line.endsWith(".M2")) {
            line.truncate(line.size() - 2);
            line.append("m2");
        }
        if (!line.endsWith(".m2"))
            continue;
        if (line.left(4).toLower() == ("item"))
            continue;
        if (line.left(7).toLower() == ("cameras"))
            continue;

        // qDebug() << line;

        QList<QByteArray> parts = line.split('\\');
        insertNodes(rootNodes, parts, 0);
    }
    inputFile.close();

    qDebug() << "dumping...";

    // dump
    int indentation = 0;
    QByteArray result = "WeakAuras.ModelPaths = {\n";
    foreach (const Node &n, rootNodes)
        appendNode(result, n, indentation);

    result += "};\n";

    QFile outputFile("ModelPaths.lua");
    outputFile.open(QIODevice::WriteOnly);
    outputFile.write(result);
    outputFile.close();

    return 0;
}