abnf-parser/include/abnf/detail/iless.h

#pragma once

#include <_strings.h>
#include <string_view>

namespace abnf::detail {
struct iless {
  using is_transparent = void;

  bool operator()(std::string_view lhs, std::string_view rhs) const {
    int const cmp =
        strncasecmp(lhs.data(), rhs.data(), std::min(lhs.size(), rhs.size()));
    return cmp < 0 || (cmp == 0 && lhs.size() < rhs.size());
  }
};
}