string Tools::Wrap	(	std::string &	str,
		size_t	width = 78
	)

This is a static helper to remove leading and trailing whitespaces.

Usage example:

string str = "     Dies ist ein test fuer einen ganz     langen Satz "
    "und ob er korrekt umgebrochen und formatiert wird. Alles "
    "nur ein simpler test aber trotzdem ganz wichtig.";

cout << setfill('-') << setw(40) << "+" << endl;
while (1)
{
    const string rc = Tools::Wrap(str, 40);
    if (rc.empty())
        break;
    cout << rc << endl;
}

Definition at line 128 of file tools.cc.

References str.

{
    const size_t pos = str.length()<width ? string::npos : str.find_last_of(' ', width);
    if (pos==string::npos)
    {
        const string rc = str;
        str = "";
        return rc;
    }

    const size_t indent = str.find_first_not_of(' ');

    const string rc = str.substr(0, pos);
    const size_t p2 = str.find_first_not_of(' ', pos+1);

    str = str.substr(0, indent) + str.substr(p2==string::npos ? pos+1 : p2);

    return rc;
}