Basic interface

slog.go

@@ -0,0 +1,68 @@
+package slog
+
+import (
+	"fmt"
+	"io"
+	"os"
+)
+
+type SLogLevel int
+
+const (
+	ERROR SLogLevel = iota
+	WARN
+	INFO
+	DEBUG
+)
+
+var level = ERROR
+var loggers = []io.Writer{os.Stdout}
+
+func log(level SLogLevel, format string, a ...interface{}) (err error) {
+	err = nil
+
+	if level > level {
+		return err
+	}
+
+	for _, l := range loggers {
+		msg := fmt.Sprintf(format, a...)
+		if _, err = l.Write([]byte(msg)); err != nil {
+			return err
+		}
+	}
+
+	return err
+}
+
+func LOG_ERROR(format string, a ...interface{}) {
+	log(ERROR, "[ERROR] - "+format, a...)
+}
+
+func LOG_WARN(format string, a ...interface{}) {
+	log(WARN, "[WARN] - "+format, a...)
+}
+
+func LOG_INFO(format string, a ...interface{}) {
+	log(INFO, "[INFO] - "+format, a...)
+}
+
+func LOG_DEBUG(format string, a ...interface{}) {
+	log(DEBUG, "[DEBUG] - "+format, a...)
+}
+
+func SetLevel(level SLogLevel) {
+	level = level
+}
+
+func AddLogger(logger io.Writer) {
+	loggers = append(loggers, logger)
+}
+
+func SetLoggers(loggers []io.Writer) {
+	loggers = loggers
+}
+
+func ClearLoggers() {
+	loggers = []io.Writer{}
+}