util.h

//
// Created by Nicholas Kwon on 11/5/16.
//

#ifndef RICE_HDFS_UTIL_H
#define RICE_HDFS_UTIL_H
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>

namespace util {

    inline void generate_block_id(std::uint64_t &uuid) {
        auto bytes = boost::uuids::random_generator()();
        memcpy((&uuid), &bytes, sizeof(std::uint64_t));
        // mask with all 1s (63 1s). This effectively sets the 64th bit to 0.
        uuid = uuid & ((1ull << 63) - 1);
    }

    inline std::string concat_path(const std::string& str1, const std::string& str2){
        std::string new_path = str1;

        if (str1.back() != '/' && str2.at(0) != '/'){
            new_path += "/";
        }
        else if (str1.back() == '/' &&  str2.at(0) == '/'){
            new_path = str1.substr(0, str1.size() - 1);
        }
        new_path += str2;
        if (new_path.at(new_path.length() - 1) == '/'){
            new_path.pop_back();
        }
        return new_path;
    }
}
#endif //RICE_HDFS_UTIL_H