Implement C++ equivalent of ObjC componentsSeparatedByString:

components_separated_by_string.cpp

#include <algorithm>
#include <string>
#include <vector>
#include <iostream>

template <typename String, typename OutputIt>
void components_separated_by_string(const String & string, const String & separator, OutputIt out)
{
    typename String::size_type   comp_start=0, comp_end;
    while ((comp_end = string.find(separator, comp_start)) != String::npos) {
        *out++ = string.substr(comp_start, comp_end-comp_start);
        comp_start = comp_end+separator.size();
    }
    if (comp_start || string.size())
        *out++ = string.substr(comp_start);
}

template <typename String, typename OutputContainer=std::vector<String>>
OutputContainer components_separated_by_string(const String & string, const String & separator)
{
    OutputContainer container;
    components_separated_by_string(string, separator, std::back_inserter(container));

    return container;
}

int
main(int, char **)
{
    auto components = components_separated_by_string<std::string>("Blue meanies are blue", " ");
    for (const std::string comp : components)
        std::cout << comp << std::endl;
    return 0;
}