[INVALID] String is not read from a text file

igorland

Hello. I have created a dialog box to open a path to a file on my computer and then save this file in a property file. I will then use this path to open a database. What I am also trying to do is to have the current path saved in the property file automatically appear in the textbox of the dialog. This is what I have:

[code]

#include "opennavdata.h"
#include "ui_opennavdata.h"
#include <QFileDialog>
#include <QFile>
#include <QMessageBox>
#include <QTextStream>
#include <cstring>
#include <sstream>
#include <fstream>
#include <iostream>

OpenNavdata::OpenNavdata(QWidget *parent) :
QDialog(parent),
ui(new Ui::OpenNavdata)
{
ui->setupUi(this);

// Opening the nav database from the provided path
std::ifstream ifs("Airports.txt");

// we need to look a line starting with "navdata.path="
const std::string search_string = "navdata.path" ;

std::string line;
std::string value;
QStringList tokens;

while( std::getline( ifs, line ) && line.find(search_string) != 0 );

    if( line.find(search_string) != 0 )
    {
        ui->navDataDialogTextLine->setText("NavData is not selected");
    }

    else
    {
        value = line + '\n' ;
        QString qvalue = QString::fromStdString(value);
        tokens = qvalue.split("=");
        QString final;
        final = tokens[1];
        ui->navDataDialogTextLine->setText(final);
    }

}

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

// Button used to locate the Airports.txt navdata file
void OpenNavdata::on_butNavdataDialogBrowse_clicked()
{
navDataFilePath = QFileDialog::getOpenFileName(this, tr("Open Airports.txt file"), "/", tr("Airports.txt"));
ui->navDataDialogTextLine->setText(navDataFilePath);
}

// Button used to store the path of the Airports navdata file in the property file
void OpenNavdata::on_butNavdataDialogOK_clicked()
{
QString doc;
doc = "navdata.path=" + navDataFilePath + "\n";
QFile dataFile("igodispatch.property");

if (dataFile.open(QFile::WriteOnly | QFile::Truncate&#41;) {
     QTextStream out(&dataFile);
     out << doc;
}

dataFile.close();
close();

}

// Button to close the navdata dialog box
void OpenNavdata::on_butNavdataDialogCancel_clicked()
{
close();
}

[/code]

However, when I open the dialog, the textbox has the following "NavData is not selected". I cannot understand what I am doing wrong. Does it even open the file?

THANKS!

Igor

igorland

EDIT: Sorry!!! I just realized that I was opening the wrong file. Please disregard! (Sorry, no option to delete the message). :-)

JKSH

[quote author="igorland" date="1383095304"]EDIT: Sorry!!! I just realized that I was opening the wrong file. Please disregard! (Sorry, no option to delete the message). :-)[/quote]That's ok :) Glad to hear you fixed your issue.

You can edit your original post to make a note at the top, so that people don't start reading your code. Even better, edit your title and add "[INVALID]" to the front.