phase 5: transfer service

src/infra/sys/logger.cpp

@@ -0,0 +1,64 @@
+#include <nxst/infra/sys/logger.hpp>
+
+#include <cstdarg>
+#include <cstdio>
+#include <ctime>
+#include <mutex>
+
+namespace {
+
+std::mutex g_log_mutex;
+
+#if defined(__SWITCH__)
+constexpr const char* kLogPath = "/switch/NXST/log.log";
+#else
+constexpr const char* kLogPath = "nxst.log";
+#endif
+
+void writeEntry(const char* tag, const char* fmt, va_list args)
+{
+    char msg[2048];
+    vsnprintf(msg, sizeof(msg), fmt, args);
+
+    time_t now = time(nullptr);
+    struct tm tm_buf;
+    localtime_r(&now, &tm_buf);
+    char time_str[16];
+    strftime(time_str, sizeof(time_str), "%H:%M:%S", &tm_buf);
+
+    std::lock_guard<std::mutex> lock(g_log_mutex);
+
+    fprintf(stderr, "[%s]%s %s\n", time_str, tag, msg);
+
+    FILE* log_file = fopen(kLogPath, "a");
+    if (log_file != nullptr) {
+        fprintf(log_file, "[%s]%s %s\n", time_str, tag, msg);
+        fclose(log_file);
+    }
+}
+
+} // namespace
+
+namespace nxst::log {
+
+void write(Level level, const char* fmt, ...)
+{
+    const char* tag = "[INFO] ";
+    switch (level) {
+        case Level::Debug: tag = "[DEBUG]"; break;
+        case Level::Info:  tag = "[INFO] "; break;
+        case Level::Warn:  tag = "[WARN] "; break;
+        case Level::Error: tag = "[ERROR]"; break;
+    }
+    va_list args;
+    va_start(args, fmt);
+    writeEntry(tag, fmt, args);
+    va_end(args);
+}
+
+void debug(const char* fmt, ...) { va_list args; va_start(args, fmt); writeEntry("[DEBUG]", fmt, args); va_end(args); }
+void info (const char* fmt, ...) { va_list args; va_start(args, fmt); writeEntry("[INFO] ", fmt, args); va_end(args); }
+void warn (const char* fmt, ...) { va_list args; va_start(args, fmt); writeEntry("[WARN] ", fmt, args); va_end(args); }
+void error(const char* fmt, ...) { va_list args; va_start(args, fmt); writeEntry("[ERROR]", fmt, args); va_end(args); }
+
+} // namespace nxst::log