Qt/C++ - How to remove a whole line from a string?

Question

I am using QString::remove(QString) to remove a specific line from a string, but there's a small problem which is the removed string isn't really removed, it is replaced with an empty string instead. I want to remove the whole line completely.

Original String:

...
Hi there,
Alaa Joseph is here!
The above line is going to be removed :P

It's the magic of C++ :]
...

Here's what I've tried:

test1 = originalString.replace("Alaa Joseph is here!", "");
test2 = originalString.remove("Alaa Joseph is here!");  // Same result as the previous

Output:

...
Hi there,

The above line is going to be removed :P

It's the magic of C++ :]
...

As you see above, it has removed the text without removing the whole line!

---

I need the output to be like this:

...
Hi there,
The above line is going to be removed :P

It's the magic of C++ :]
...

I know I could just iterate through each line & do this:

QStringList list = test1.split("\n");

list.removeAt(0);
int n = list.length();
list.removeAt(n - 1);

QString noEmptyLines = list.join("\n");

But I don't want to remove all empty lines, only ones which I removed their content as this will ruin the whole format of my document.

Answer 1

Try this:

test2 = originalString.remove("Alaa Joseph is here!\n"); 

This should delete \n too and you will get correct output.

If your task has some specification you can check what you should to do. For example:

if(originalString.contains("Alaa Joseph is here!\n") )
    test2 = originalString.remove("Alaa Joseph is here!\n");
else
    if(originalString.contains("Alaa Joseph is here!"))
        test2 = originalString.remove("Alaa Joseph is here!"); 

If you are sure that the \n is always in your string, you can avoid this additional code.