soubor build-conv-../example.txt

<code>

Nejaka hlavicka


@repeat

   Jedna polozka (@name, @ red, @blue, @green)
   
@next


Konec

</code>

<code c++>
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    void load (QString file_name);
    void put (QString s);
    void scan ();
    void save (QString file_name);

private slots:
    void on_actionRun_triggered();

private:
    Ui::MainWindow *ui;
    QString answer;
};

#endif // MAINWINDOW_H

</code>


do .ui pridat QPlainTextEdit input, output

<code c++>
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    load ("example.txt");
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::load (QString file_name)
{
    QFile file (file_name);
    if (file.open (QIODevice::ReadOnly | QIODevice::Text))
    {
        QByteArray a = file.readAll ();
        // QString s = QString::fromLatin1(a.data ());
        ui->input->setPlainText (a);
    }
}

void MainWindow::put (QString s)
{
    if (!silent)
       answer += s;
}
//ahoj
#include <QSqlQuery>

void MainWindow::scan()
{
    answer = "";
    silent = false;

    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("test.sqlite");
    db.open ();

    QString table = "colors";
    QSqlQuery query = db.exec("SELECT * FROM " + table);

    QString txt = ui->input->toPlainText();
    int len = txt.length();
    int inx = 0;

    int start = 0;

    while (inx < len)
    {
        QChar c = txt [inx ++];
        if (c == '\r')
           /* nothing */ ;
        else if (c != '@')
           put (c);
        else
        {
           QString id = "";
           bool stop = false;
           while (inx < len && ! stop)
           {
              c = txt [inx];
              if (c.isLetter())
              {
                  id += c;
                  inx ++;
              }
              else stop = true;
           }
           if (id == "")
              put ("@");
           else if (id == "repeat")
           {
              start = inx;
              bool ok = query.next ();
              silent = ! ok;
           }
           else if (id == "next")
           {
              bool ok = query.next ();
              if (ok)
                 inx = start;
              else
                 silent = false;
           }
           else
           {
               QString s = query.value (id).toString();
               put (s);
           }
        }
    }
    ui->output->setPlainText(answer);
}

void MainWindow::on_actionRun_triggered()
{
    scan ();
}

#include <QFileDialog>

void MainWindow::on_actionOpen_triggered()
{
    QString s = QFileDialog::getOpenFileName (this, "File with template");
    if (s != "")
       load (s);
}

</code>