C++ split string by line

Question

I need to split string by line. I used to do in the following way:

int doSegment(char *sentence, int segNum)
{
assert(pSegmenter != NULL);
Logger &log =          


        

Answer 1

You can call std::string::find in a loop and the use std::string::substr.

std::vector split_string(const std::string& str,
                                      const std::string& delimiter)
{
    std::vector strings;

    std::string::size_type pos = 0;
    std::string::size_type prev = 0;
    while ((pos = str.find(delimiter, prev)) != std::string::npos)
    {
        strings.push_back(str.substr(prev, pos - prev));
        prev = pos + 1;
    }

    // To get the last substring (or only, if delimiter is not found)
    strings.push_back(str.substr(prev));

    return strings;
}

See example here.