remote-challenge-sync-airbus: WIP

remote/challenge-sync-airbus/timestamp.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+)
+
+func loadTS(tspath string) (timestamp *time.Time, err error) {
+	if _, err = os.Stat(tspath); os.IsNotExist(err) {
+		init := time.Unix(0, 0)
+		timestamp = &init
+
+		err = saveTS(tspath, timestamp)
+		return
+	}
+
+	var fd *os.File
+	fd, err = os.Open(tspath)
+	if err != nil {
+		return
+	}
+	defer fd.Close()
+
+	var init int64
+	_, err = fmt.Fscanf(fd, "%d", &init)
+	if err != nil {
+		return
+	}
+
+	tmp := time.Unix(init, 0)
+	timestamp = &tmp
+
+	return
+}
+
+func saveTS(tspath string, ts *time.Time) error {
+	fd, err := os.Create(tspath)
+	if err != nil {
+		return err
+	}
+	defer fd.Close()
+
+	_, err = fmt.Fprintf(fd, "%d", ts.Unix())
+	if err != nil {
+		return err
+	}
+
+	return nil
+}