How do you read a line from a file to a string?

I'm trying to read a file with a loop and put each line in a cstring. Here's my code:

string messageBuffer;
while(!messageFile.eof())
 { messageBuffer = "";
   getline(messageFile, messageBuffer);
   if(messageBuffer == "")
    { messageBuffer = "\n"; }
   sendToServer(s, messageBuffer, NO);
 }
This works fine for most lines, and doesn't save the \n to the cstring, just like it's supposed to, but when it gets to a blank line, where the \n is the only thing on the line, it totally skips it and goes on to the next line. If my file's like this:

Test 1

Test 2

-and I read it with this loop, it ends up being like:

Test 1
Test 2

-I tried using the cstring function:
messageBuffer.read_line(messageFile);
instead of:
getline(messageFile, messageBuffer);

-it gives the exact same results, which makes me think that the cstring class won't let it return just nothing, which what it should do if a \n is stripped off a line w/ just \n.

I tried this exact same loop using char messageBuffer[100] and char functions instead, and it works perfectly.

Also, tabs seem to be stripped out when they're saved to a string as well. Does anyone know what's wrong? Thanks.
DarkNovaAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

DarkNovaAuthor Commented:
Edited text of question
0
strobertCommented:
I don't have the source code to read_line handy at the moment, but it looks like it is behaving like a stream >> operator to a string which eats whitespace.

use fscanf or a combo of fgets and sscanf to do formatted input reading.
0
mann061997Commented:
getline is defined as:

template<class E, class Ti, class T, class A>
    basic_istream<E, Ti>& getline(
        basic_istream <E, Ti>& is,
        basic_string<E, T, A>& str,
        E delim = Ti::newline());

Since you only supplied the first 2 parameters the delimiter
is set to the default value newline. The delimiter is not
appended to the string when it is encountered.

So you could either
- test for messageBuffer.IsEmpty() && !messageFile.eof() and
  generate a \n in these cases
- use char functions as you already mentioned
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
C++

From novice to tech pro — start learning today.