bool endswith(types::str const& s, types::str const& suffix, long start, long end)
{
if(end == -1)
end = s.size();
long rstart = end - suffix.size();
return rstart >= start and s.compare(rstart, suffix.size(), suffix) == 0;
}
bool startswith(types::str const &s, types::str const &prefix, long start,
long end)
{
if (end < 0)
end = s.size();
return (end - start) >= prefix.size() and
s.compare(start, prefix.size(), prefix) == 0;
}
bool startswith(types::str const& s, types::str const& prefix, long start=0, size_t end=std::string::npos) {
if(end == std::string::npos)
end = s.size();
return (end - start) >= prefix.size() and s.compare(start, prefix.size(), prefix) == 0;
}