#pragma once #include #include #include #include #include #include namespace RNR { class Strings { public: static uint8_t random_char(); static std::string random_hex(const uint64_t length); template static std::string string_format( const std::string& format, Args ... args ) { int size_s = std::snprintf( nullptr, 0, format.c_str(), args ... ) + 1; // Extra space for '\0' if( size_s <= 0 ){ throw std::runtime_error( "Error during formatting." ); } auto size = static_cast( size_s ); std::unique_ptr buf( new char[ size ] ); std::snprintf( buf.get(), size, format.c_str(), args ... ); return std::string( buf.get(), buf.get() + size - 1 ); // We don't want the '\0' inside } }; }