working commit

works/rpcvar/logger.cpp

@@ -0,0 +1,45 @@
+
+
+
+#include <chrono>
+#include <format>
+#include <iostream>
+#include <mutex>
+#include <string>
+#include <cstdio>
+#include <cstdarg>
+
+#include <logger.hpp>
+
+Logger logger;
+static std::mutex mtx;
+
+Logger::Logger(const std::string ilabel) {
+        label = ilabel;
+}
+
+Logger::Logger(void) {
+        label = "global";
+}
+void Logger::Log(const std::string& message) {
+        auto now = std::chrono::system_clock::now();
+        std::chrono::zoned_time localnow{std::chrono::current_zone(), now};
+        std::string timenow = std::format("{:%Y-%m-%dT%H:%M:%OS%Z}", localnow);
+        std::lock_guard<std::mutex> lock(mtx);
+        std::cout << std::format("{} {} {}\n", timenow, label, message);
+}
+
+
+void Logger::Logf(const std::string& format, ...) {
+        auto now = std::chrono::system_clock::now();
+        std::chrono::zoned_time localnow{std::chrono::current_zone(), now};
+        std::string timenow = std::format("{:%Y-%m-%dT%H:%M:%OS%Z}", localnow);
+        std::lock_guard<std::mutex> lock(mtx);
+        std::printf("%s %s ", timenow.c_str(), label.c_str());
+        va_list args;
+        va_start(args, format);
+        std::vprintf(format.data(), args);
+        va_end(args);
+        std::printf("\n");
+}
+