logger package! yay

fix #38

logger/log.go

@@ -0,0 +1,58 @@
+package logger
+
+import "log"
+
+type Level int
+
+const (
+	DEBUG = Level(1)
+	INFO  = Level(2)
+	WARN  = Level(3)
+	ERROR = Level(4)
+	FATAL = Level(5)
+)
+
+func (l Level) String() string {
+	switch l {
+	case DEBUG:
+		return "DEBUG "
+	case INFO:
+		return "INFO  "
+	case WARN:
+		return "WARN  "
+	case ERROR:
+		return "ERROR "
+	case FATAL:
+		return "FATAL "
+	default:
+		return "????? "
+	}
+}
+
+var LogLevel Level = 2
+
+func SetLogLevel(level Level) {
+	LogLevel = level
+}
+
+func Println(level Level, args ...any) {
+	if level >= LogLevel {
+		log.Println(level, args)
+	}
+}
+
+func Printf(level Level, format string, args ...any) {
+	if level >= LogLevel {
+		log.Printf(level.String()+format, args)
+	}
+}
+
+func Fatalln(args ...any) {
+	level := FATAL
+	log.Fatalln(level.String(), args)
+}
+
+func Fatalf(format string, args ...any) {
+	level := FATAL
+	log.Fatalf(level.String()+format, args)
+}