152 lines
3.8 KiB
C++
152 lines
3.8 KiB
C++
#include "Log.h"
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/*
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* class Log
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*/
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// static members
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std::vector<Log::Output*> Log::outputs;
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Log::LeveledSink Log::fatal(Log::Level::FATAL);
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Log::LeveledSink Log::error(Log::Level::ERROR);
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Log::LeveledSink Log::warn(Log::Level::WARN);
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Log::LeveledSink Log::note(Log::Level::NOTE);
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Log::LeveledSink Log::info(Log::Level::INFO);
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Log::LeveledSink Log::debug(Log::Level::DEBUG);
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Log::LeveledSink Log::trace(Log::Level::TRACE);
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void Log::init() {
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// add default console logger
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if (outputs.empty())
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outputs.push_back(new Log::ConsoleOutput());
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}
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void Log::stop() {
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for (auto output : outputs)
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delete output;
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outputs.clear();
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}
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void Log::addLogfile(const std::string& filename, Level max) {
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outputs.push_back(new Log::FileOutput(filename, max));
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}
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void Log::addLogfile(const std::string& filename, Level min, Level max) {
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outputs.push_back(new Log::FileOutput(filename, min, max));
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}
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void Log::setConsoleLogLevel(Level lvl) {
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outputs.at(0)->setLogLevel(lvl); // has to exist
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}
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void Log::setColoredOutput(bool enabled) {
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((Log::ConsoleOutput*) outputs.at(0))->setColoredOutput(enabled); // has to exist
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}
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void Log::log(Level lvl, std::stringbuf* strb) {
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for (Output* out : outputs) {
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out->log(lvl, strb);
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// reset stringbuffer read pointer to the beginning
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strb->pubseekpos(0);
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}
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}
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/*
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* abstract class Output
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* default implementations
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*/
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Log::Output::Output() {}
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Log::Output::Output(Log::Level lvl_max) : lvl_max(lvl_max) {}
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Log::Output::~Output() {}
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void Log::Output::log(Log::Level lvl, std::stringbuf* sbuf) {
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std::ostream* os = getOs(lvl);
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if (os) {
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printLogHeader(os, lvl);
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*os << sbuf << std::endl;
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}
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}
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void Log::Output::setLogLevel(Log::Level lvl) {
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lvl_max = lvl;
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}
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void Log::Output::printLogHeader(std::ostream* os, Level lvl) {
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static const char* LevelTag[] = {"", "[FATAL] ", "[ERROR] ", "[WARN ] ",
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"[NOTE ] ", "[INFO ] ", "[DEBUG] ", "[TRACE] "};
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// get current date/time
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auto now = std::chrono::system_clock::now();
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std::time_t now_c = std::chrono::system_clock::to_time_t(now);
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*os << "[" << std::put_time(std::localtime(&now_c), "%F %T") << "]" << LevelTag[lvl];
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}
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/*
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* class ConsoleOutput
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*/
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Log::ConsoleOutput::ConsoleOutput() : Output() {}
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bool Log::ConsoleOutput::setColoredOutput(bool enabled) {
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// TODO: check the terminals compatibility for colors
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coloredOutput = enabled;
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return true;
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}
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void Log::ConsoleOutput::log(Log::Level lvl, std::stringbuf* sbuf) {
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static const char* esc_seq_start = "\033[";
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static const char* esc_seq_reset = "\033[0m";
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// OFF FATAL ERROR WARN NOTE INFO DEBUG TRACE
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static const char* color_codes[] = {"", "1;31;40m", "31m", "33m", "96m", "32m", "0m", "0m"};
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std::ostream* os = getOs(lvl);
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if (os) {
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// print colors if enabled
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if (coloredOutput)
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*os << esc_seq_start << color_codes[lvl];
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Output::printLogHeader(os, lvl);
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*os << sbuf;
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// reset color at end of the line
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if (coloredOutput)
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*os << esc_seq_reset;
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*os << std::endl;
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}
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}
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std::ostream* Log::ConsoleOutput::getOs(Log::Level lvl) {
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// out of scope?
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if (!lvl || lvl > lvl_max)
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return nullptr;
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// stderr for FATAL, ERROR, WARN
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if (lvl <= Log::Level::WARN)
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return osErr;
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else
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return osStd;
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}
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/*
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* class FileOutput
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* logging to file
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*/
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Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_max)
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: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app) {}
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Log::FileOutput::FileOutput(const std::string& filename, Log::Level lvl_min, Log::Level lvl_max)
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: Output(lvl_max), filename(filename), ofs(filename, std::ofstream::out | std::ofstream::app), lvl_min(lvl_min) {}
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std::ostream* Log::FileOutput::getOs(Log::Level lvl) {
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if (lvl_min <= lvl && lvl <= lvl_max)
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return &ofs;
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return nullptr;
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}
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Log::LeveledSink::LeveledSink(Log::Level level) : level(level) {}
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