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#include "logger_file.hh"
#include <fstream>
#include <mutex>
#include "logger_base.hh"
namespace {
class LoggerFileImpl : public LoggerBase {
public:
explicit LoggerFileImpl(std::filesystem::path const& path)
: out_(path, std::ios::out | std::ios::app) {}
bool good() const {
return out_.good();
}
protected:
void msg(Level lvl, std::string_view msg) override {
std::lock_guard<std::mutex> lock(mutex_);
switch (lvl) {
case Level::ERR:
out_ << "Error: " << msg << std::endl;
break;
case Level::WARN:
out_ << "Warning: " << msg << std::endl;
break;
case Level::INFO:
out_ << msg << std::endl;
break;
case Level::DBG:
out_ << "Debug: " << msg << std::endl;
break;
}
}
private:
std::mutex mutex_;
std::fstream out_;
};
} // namespace
std::unique_ptr<Logger> LoggerFile::create(std::filesystem::path const& path,
Logger* fallback) {
auto logger = std::make_unique<LoggerFileImpl>(path);
if (logger->good())
return logger;
fallback->warn("Unable to open %s for appending.", path.c_str());
return nullptr;
}
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