add a printf style logging macro

src/dumbLog.cpp

@@ -3,6 +3,8 @@
 #include <chrono>
 
 #include "dumbLog.h"
+#include "types.h"
+
 
 void dumbLog::setOutputStream(std::ostream* out)
 {
@@ -33,7 +35,36 @@ int
 dumbLog::getCurrentMS()
 {
 	auto now = std::chrono::system_clock::now();
-	long long total_ms = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()).count();
+	u64 total_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
+		now.time_since_epoch()
+	).count();
 	return int(total_ms % 1000);
 }
 
+
+#include <cstdarg>
+#include <ctime>
+
+
+void
+dumbLogF(log_level l, const char* func, const char* fmt, ...)
+{
+	const char* level = logger.logLevelToString(l);
+	char time_str[100];
+	timespec ts;
+	timespec_get(&ts, TIME_UTC);
+	i64 ms = ts.tv_nsec / 1000000;
+
+	if (strftime(time_str, sizeof(time_str), "%T", localtime(&ts.tv_sec))) {
+		// NOTE: print prefix, "H:M:S.ms, log_level, function(), "
+		printf("%s.%03ld [%s] %s(), ", time_str, ms, level, func);
+
+		// NOTE: append user args
+		va_list args;
+		va_start(args, fmt);
+		vprintf(fmt, args);
+		va_end(args);
+	} else {
+		printf("%s(), error getting time\n", __FUNCTION__);
+	}
+}

src/dumbLog.h

@@ -24,7 +24,14 @@ struct dumbLog
 static dumbLog logger;
 
 #define LOG(level) *logger.OUT \
-	<< std::put_time(logger.getCurrentTime(), "%F %T.") << logger.getCurrentMS() << " " \
+	<< std::put_time(logger.getCurrentTime(), "%F %T.") \
+		<< logger.getCurrentMS() << " " \
 	<< "[" << logger.logLevelToString(level) << "] " \
 	<< "(" << __FUNCTION__ << ") "
 
+
+#include <cstdio>
+
+#define LOGF(level, format_str, ...) \
+	dumbLogF(level, __FUNCTION__, format_str, ##__VA_ARGS__);
+void dumbLogF(log_level l, const char* func, const char* fmt, ...);

src/types.h

@@ -5,8 +5,9 @@
 
 
 typedef uint8_t u8;
-typedef int32_t i32;
 typedef uint16_t u16;
 typedef uint32_t u32;
 typedef uint64_t u64;
 
+typedef int32_t i32;
+typedef int64_t i64;