72 lines
1.1 KiB
C
72 lines
1.1 KiB
C
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#ifndef LOGGER_H
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#define LOGGER_H
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#include <iostream>
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#include <chrono>
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class Logger
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{
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private:
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class LogEntry
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{
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bool headerSent;
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std::ostream *out;
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std::string prefix;
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public:
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LogEntry(std::ostream *out, std::string prefix) : out(out), prefix(prefix)
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{
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}
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template <class T> LogEntry &operator<<(const T &val)
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{
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if(out == nullptr)
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return *this;
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if(!headerSent)
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{
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(*out) << time(0) << " " << prefix;
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}
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(*out) << val;
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headerSent = true;
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return *this; // or maybe out itself? probably not.
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}
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~LogEntry()
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{
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if(out != nullptr)
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{
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(*out) << std::endl;
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(*out).flush();
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}
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}
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};
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public:
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static std::ostream *out;
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static int logLevel;
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static void setStream(std::ostream *out)
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{
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Logger::out = out;
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}
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static LogEntry debug()
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{
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if(Logger::logLevel >= 3)
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return LogEntry(out, "Debug: ");
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return LogEntry(nullptr, "");
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}
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static LogEntry error()
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{
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return LogEntry(out, "Error: ");
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}
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static LogEntry log()
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{
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if(Logger::logLevel >= 2)
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return LogEntry(out, "Log: ");
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return LogEntry(nullptr, "");
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}
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};
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#endif // LOGGER_H
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