log4cplus.hpp

Go to the documentation of this file.

/**
 * @file
 * @ingroup daq_libdaq
 * @copyright (c) Copyright ESO 2022
 * All Rights Reserved
 * ESO (eso.org) is an Intergovernmental Organisation, and therefore special legal conditions apply.
 *
 * @brief Declaration of log4cplus helpers
 */
#ifndef DAQ_LOG4CPLUS_HPP
#define DAQ_LOG4CPLUS_HPP
 
#include <cstdint>
#include <iosfwd>
 
#include <log4cplus/loglevel.h>
 
namespace daq {
 
/**
 * ly typed log4cplus::LogLevel (which is an alias to int)
 */
struct LogLevel {
    log4cplus::LogLevel value;
};
 
/**
 * Parse log level from string.
 */
std::istream& operator>>(std::istream& is, LogLevel& level);
 
/**
 * Format log level to stream.
 */
std::ostream& operator<<(std::ostream& os, LogLevel level);
 
/**
 * Trim string from whitespace (' ', '\n')
 */
class Trim {
public:
    static constexpr std::string_view WHITESPACE = " \n\t";
    enum : std::uint8_t {
        Right = 1 << 2,
    };
    /**
     * Construct from exception derived from std::exception.
     */
    explicit Trim(std::string_view str, std::uint8_t spec = Right) noexcept
 
        : m_str(str), m_spec(spec){};
 
    /**
     * Formats string by trimming as
     *
     * @param os output stream to output to.
     * @param reporter Reporter adapter to format.
     * @returns os
     */
    friend std::ostream& operator<<(std::ostream& os, Trim const& trim);
 
private:
    std::string_view m_str;
    std::uint8_t m_spec;
};
}  // namespace daq
 
#endif  // #ifndef DAQ_LOG4CPLUS_HPP