b5d9e433
 Peter M. Groen
Fixed License Hea...
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
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51becbde
Peter M. Groen
Committed the ent...
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#ifndef OSDEV_COMPONENTS_MQTT_MQTTSTREAM_H
#define OSDEV_COMPONENTS_MQTT_MQTTSTREAM_H
// This header is used in conjunction with mlogic/commmon/stringify.h to get output streaming of stl container types.
// The streaming operators are not suitable for marshalling because type information is lost!
// std
#include <array>
#include <list>
#include <map>
#include <ostream>
#include <set>
#include <string>
#include <vector>
namespace osdev {
namespace components {
namespace mqtt {
/**
* @brief Streams a container with content for which stream operators are available.
* @note This function is meant for printing and not for marshalling!
* @tparam Open The container opening character.
* @tparam Close The container closing character.
* @tparam T The container type.
* @param os The stream to use.
* @param rhs The container that is to be streamed.
* @param sep The field separator. Default is ", "
* @return reference to the stream object.
*/
template <char Open, char Close, typename T>
std::ostream& streamContainer(std::ostream& os, const T& rhs, const std::string& sep = ", ")
{
os << Open;
for (auto cit = rhs.cbegin(); rhs.cend() != cit; ++cit) {
os << *cit;
if (std::next(cit) != rhs.end()) {
os << sep;
}
}
os << Close;
return os;
}
} // End namespace mqtt
} // End namespace components
} // End namespace osdev
namespace std {
/**
* @brief Streams a list that contains values for which an output stream operator is available.
*/
template <typename T>
std::ostream& operator<<(std::ostream& os, const std::list<T>& rhs)
{
return osdev::components::mqtt::streamContainer<'<', '>'>(os, rhs);
}
/**
* @brief Streams an array that contains values for which an output stream operator is available.
*/
template <typename T, std::size_t N>
std::ostream& operator<<(std::ostream& os, const std::array<T, N>& rhs)
{
return osdev::components::mqtt::streamContainer<'[', ']'>(os, rhs);
}
/**
* @brief Streams a vector that contains values for which an output stream operator is available.
*/
template <typename T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& rhs)
{
return osdev::components::mqtt::streamContainer<'[', ']'>(os, rhs);
}
/**
* @brief Streams a set that contains values for which an output stream operator is available.
*/
template <typename T>
std::ostream& operator<<(std::ostream& os, const std::set<T>& rhs)
{
return osdev::components::mqtt::streamContainer<'{', '}'>(os, rhs);
}
/**
* @brief Streams a map that contains keys and values for which an output stream operator is available.
*/
template <typename TKey, typename TValue>
std::ostream& operator<<(std::ostream& os, const std::map<TKey, TValue>& rhs)
{
return osdev::components::mqtt::streamContainer<'{', '}'>(os, rhs);
}
/**
* @brief Streams a pair that contains values for which an output stream operator is available.
*/
template <typename TFirst, typename TSecond>
std::ostream& operator<<(std::ostream& os, const std::pair<TFirst, TSecond>& rhs)
{
os << "{" << rhs.first << " : " << rhs.second << "}";
return os;
}
} // End namespace std
#endif // OSDEV_COMPONENTS_MQTT_MQTTSTREAM_H
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