--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/logging.go	Sat Oct 13 21:42:11 2018 +0200
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2014-2018 Mikael Berthe <mikael@lilotux.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+)
+
+type myLogT struct {
+	verbosity int
+}
+
+func (l *myLogT) Printf(level int, format string, args ...interface{}) {
+	if level > l.verbosity {
+		return
+	}
+	if level >= 0 {
+		log.Printf(format, args...)
+		return
+	}
+	// Error message without timestamp
+	fmt.Fprintf(os.Stderr, format, args...)
+}
+
+func (l *myLogT) Println(level int, args ...interface{}) {
+	if level > l.verbosity {
+		return
+	}
+	if level >= 0 {
+		log.Println(args...)
+		return
+	}
+	// Error message without timestamp
+	fmt.Fprintln(os.Stderr, args...)
+}
+
+func (l *myLogT) Fatal(args ...interface{}) {
+	log.Fatal(args...)
+}
+
+func (l *myLogT) SetBenchFlags() {
+	log.SetFlags(log.LstdFlags | log.Lmicroseconds)
+}