Program Listing for File Console.h

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/* Author: Ioan Sucan */

#ifndef OMPL_UTIL_CONSOLE_
#define OMPL_UTIL_CONSOLE_

#include <string>

#define OMPL_ERROR(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_ERROR, fmt, ##__VA_ARGS__)

#define OMPL_WARN(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_WARN, fmt, ##__VA_ARGS__)

#define OMPL_INFORM(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_INFO, fmt, ##__VA_ARGS__)

#define OMPL_DEBUG(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_DEBUG, fmt, ##__VA_ARGS__)

#define OMPL_DEVMSG1(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_DEV1, fmt, ##__VA_ARGS__)

#define OMPL_DEVMSG2(fmt, ...) ompl::msg::log(__FILE__, __LINE__, ompl::msg::LOG_DEV2, fmt, ##__VA_ARGS__)

namespace ompl
{
    namespace msg
    {
        enum LogLevel
        {
            LOG_DEV2 = -2,  // message type for developers
            LOG_DEV1 = -1,  // message type for developers
            LOG_DEBUG = 0,
            LOG_INFO,
            LOG_WARN,
            LOG_ERROR,
            LOG_NONE
        };

        class OutputHandler
        {
        public:
            OutputHandler() = default;

            virtual ~OutputHandler() = default;

            virtual void log(const std::string &text, LogLevel level, const char *filename, int line) = 0;
        };

        class OutputHandlerSTD : public OutputHandler
        {
        public:
            OutputHandlerSTD() = default;

            void log(const std::string &text, LogLevel level, const char *filename, int line) override;
        };

        class OutputHandlerFile : public OutputHandler
        {
        public:
            OutputHandlerFile(const char *filename);

            ~OutputHandlerFile() override;

            void log(const std::string &text, LogLevel level, const char *filename, int line) override;

        private:
            FILE *file_;
        };

        void noOutputHandler();

        void restorePreviousOutputHandler();

        void useOutputHandler(OutputHandler *oh);

        OutputHandler *getOutputHandler();

        void setLogLevel(LogLevel level);

        LogLevel getLogLevel();

        void log(const char *file, int line, LogLevel level, const char *m, ...);
    }
}

#endif