Iterating over lines in a string?

Question

I am trying to do something like this:

BOOST_FOREACH (const std::string& line, allLinesOf(someFileLoadedIntoString))
{
   ...
}

I wonder how to implement the allLinesOf function? Thanks!

UPDATE: Thanks for the answers. Sorry but I forgot to mention one important detail: in my case the newlines are \\r\\n.

Answer 1

You can use std::getline .

std::string line;
while(std::getline(file, line)) {
    // Ohai!
}

Answer 2

嗯，您可以为std :: string编写自定义迭代器，该迭代器将迭代由换行符分隔的字符串段，并将此类std :: pair传递给BOOST_FOREACH

Answer 3

您可以将boost :: tokenizer与\\n令牌一起使用来遍历行。