Qt-interest Archive, August 2007
Input with QTextStream, will not read an entire line.
Message 1 in thread
Hi there. What I am having a problem with is a seeminly trivial task. I am
using a simple gui interface to write a plain text settings file that will
be read by a separate daemon/service program. The format of the config file
is:
server=stahler.dyndns.org
protocol=sftp
port=23
username=anonymous
password=
backupdir=C:/Documents and Settings/Mark/Sync
firefox=1
path=C:/Documents and Settings/Mark/Application
Data/Mozilla/Firefox/Profillt/bookmarks.html
Output to the file works great. Ill include the code just in case:
void MainWindow::save()
{
QFile file("settings.cfg");
if (!file.open(QIODevice::WriteOnly))
{
cerr << "Cannot open file for writing: " << qPrintable(file.errorString())
<< endl;
return;
}
QTextStream output(&file);
// generalBox
output << "server=" << server_lineEdit->text() << endl;
output << "protocol=";
if (ftp_radioButton->isChecked() == true)
output << "ftp" << endl;
else
output << "sftp" << endl;
output << "port=" << port_spinBox->value() << endl;
output << "username=" << username_lineEdit->text() << endl;
output << "password=" << password_lineEdit->text() << endl;
output << "backupdir=" << backup_dir_lineEdit->text() << endl;
// Firefox
output << "firefox=" << firefoxBox->isChecked() << endl;
output << "path=" << firefox_path_lineEdit->text() << endl;
}
The problem that I am having is when I need to input a line in my settings
file that includes a space. My program is multi-platform and Windows needs
spaces with path names. If I just use normal stream operators >> the QString
that I am inputting is truncated at the first space. From the code you can
see that I use the seperate() function to remove the prefix var data that is
in the config file. That works but for my QStrings in question I have
disabled that until I can get it to read something from the stream.
I have tried to use readLine() but it returns to me an empty string. I have
tried the following to input a line but it does not work. I inserted a
messagebox pop up that confirms that nothing is being read from the stream
when I use
1.) str = input.readLine(); or
2.) str = QString::fromLocal8Bit(file.readLine().data());
void MainWindow::load()
{
QString str, chopped;
int num;
QFile file("settings.cfg");
if (!file.open(QIODevice::ReadOnly))
{
cerr << "Cannot read file for loading: " << qPrintable(file.errorString())
<< endl;
loadDefaults();
return;
}
QTextStream input(&file);
// Server
input >> str;
chopped = str.section('=', 1);
server_lineEdit->setText(chopped);
// Protocol
input >> str;
chopped = str.section('=', 1);
if ( chopped == "sftp" )
sftp_radioButton->setChecked(true);
else
ftp_radioButton->setChecked(true);
// Port
input >> str;
chopped = str.section('=', 1);
num = chopped.toInt();
port_spinBox->setValue(num);
// Username
input >> str;
chopped = str.section('=', 1);
username_lineEdit->setText(chopped);
// Password
input >> str;
chopped = str.section('=', 1);
password_lineEdit->setText(chopped);
// Backup Directory
//input >> str;
str = input.readLine();
//str = QString::fromLocal8Bit(file.readLine().data());
//chopped = line.section('=', 1);
QMessageBox::information(this, tr("STR"),
QString("Backup Directory String is: %1 ").arg(str) );
chopped = str.mid(str.indexOf('=')+1);
backup_dir_lineEdit->setText(chopped);
// Firefox
input >> str;
chopped = str.section('=', 1);
if (chopped == QString::number(1))
firefoxBox->setChecked(false);
else
firefoxBox->setChecked(true);
// Path
//input >> str;
str = input.readLine();
chopped = str.section('=', 1);
firefox_path_lineEdit->setText(chopped);
}
Any insight would be greatly appreciated. I have no idea what else to try or
what could be causing this. Any other alternatives?
