Hi all,
I have this if condition which never seems to be true, but should be! It's the part in the code where I pull the String^ from textboxes (the regUsername textbox) and compare the inputted username with the first word from every text file line. So every text file line should be loaded, first word extracted and compared to the entered username, if it's the same with what's entered: error. If not, proceed with registration. But somehow, the result2 == fileUser is never true! How come?
Here's my code.
String^ result = regUsername->Text;
string result2 = marshal_as<string>(result);
ifstream regUsers ("regUsers.csv");
string line;
string fileUser;
/* While there is still a line. */
while(getline(regUsers, line))
{
fileUser = extractWord(1, line);
if (result2 == fileUser)
{
errorLabel->Text = L"Username already exists!";
errorLabel->Visible = true;
}
else
{
if (!regUsers)
{
// 'File doesn't exist' solution
System::IO::StreamWriter^ sw = gcnew System::IO::StreamWriter("regUsers.csv");
sw->WriteLine("USERNAME,PASSWORD,FIRST-NAME,LAST-NAME,E-MAIL");
sw->WriteLine(regUsername->Text + "," + regPassword->Text + "," + regFirstname->Text + "," + regLastname->Text + "," + regEmail->Text);
sw->Close();
}
else
{
// 'File exists' solution
int length;
regUsers.open("regUsers.csv", ios::binary); // open your file
regUsers.seekg(0, ios::end); // put the "cursor" at the end of the file
length = regUsers.tellg(); // find the position of the cursor
regUsers.close(); // close your file
if (length == 0)
{
// 'File is empty' solution
System::IO::StreamWriter^ sw = gcnew System::IO::StreamWriter("regUsers.csv");
sw->WriteLine("USERNAME,PASSWORD,FIRST-NAME,LAST-NAME,E-MAIL");
sw->WriteLine(regUsername->Text + "," + regPassword->Text + "," + regFirstname->Text + "," + regLastname->Text + "," + regEmail->Text);
sw->Close();
}
else
{
// 'File is not empty' solution(s)
string firstLine;
ifstream fileToSearch ("regUsers.csv");
getline(fileToSearch, firstLine);
if (firstLine == "USERNAME,PASSWORD,FIRST-NAME,LAST-NAME,E-MAIL")
{
// 'First line is header' solution
System::IO::StreamWriter^ sw = gcnew System::IO::StreamWriter("regUsers.csv", true);
sw->WriteLine(regUsername->Text + "," + regPassword->Text + "," + regFirstname->Text + "," + regLastname->Text + "," + regEmail->Text);
sw->Close();
}
else
{
if (firstLine.empty())
{
// 'First line is empty' solution
std::string line;
ifstream infile ("regUsers.csv");
ofstream outfile ("temp.csv");
outfile << "USERNAME,PASSWORD,FIRST-NAME,LAST-NAME,E-MAIL\n";
if (infile.is_open())
{
while (infile.good())
{
getline(infile, line);
if (line.empty())
{
outfile << line;
}
else
{
outfile << line << endl;
}
}
infile.close();
}
else
{
errorLabel->Text = L"Unable to open file";
}
outfile.close();
fileToSearch.close();
System::IO::StreamWriter^ sw = gcnew System::IO::StreamWriter("temp.csv", true);
sw->WriteLine(regUsername->Text + "," + regPassword->Text + "," + regFirstname->Text + "," + regLastname->Text + "," + regEmail->Text);
sw->Close();
remove("regUsers.csv");
rename("temp.csv", "regUsers.csv");
}
else
{
// 'First line is something else' solution
ifstream stream1("regUsers.csv");
ofstream stream2("temp.csv");
stream2 << "USERNAME,PASSWORD,FIRST-NAME,LAST-NAME,E-MAIL\n";
stream2 << stream1.rdbuf();
stream1.close();
stream2.close();
fileToSearch.close();
System::IO::StreamWriter^ sw = gcnew System::IO::StreamWriter("temp.csv", true);
sw->WriteLine(regUsername->Text + "," + regPassword->Text + "," + regFirstname->Text + "," + regLastname->Text + "," + regEmail->Text);
sw->Close();
remove("regUsers.csv");
rename("temp.csv", "regUsers.csv");
}
}
}
}
}
}
regUsers.close();
registerForm::Close();
Let me just say that a pretty much same mechanism already worked before where I loaded each file's line, extracted 2 words (usernames and passwords) and compared them to user-inputted username and password. And it worked! If you want to see the version of this code which worked, tell me, but, as I said, it pretty much is the same mechanism, just slightly different code.
Thank you!
