Improve stats dump

stats.go

@@ -2,21 +2,22 @@ package xdelta
 
 import (
 	"fmt"
+	"github.com/dustin/go-humanize"
 	lib "github.com/konsorten/go-xdelta/xdelta-lib"
 	"sync"
 	"time"
 )
 
 type Stats struct {
 	states    map[lib.XdeltaState]time.Duration
-	dataBytes map[lib.XdeltaState]int64
+	dataBytes map[lib.XdeltaState]uint64
 	lock      sync.Mutex
 }
 
 func newStats() *Stats {
 	return &Stats{
 		states:    make(map[lib.XdeltaState]time.Duration),
-		dataBytes: make(map[lib.XdeltaState]int64),
+		dataBytes: make(map[lib.XdeltaState]uint64),
 	}
 }
 
@@ -28,7 +29,7 @@ func (s *Stats) DumpToStdout() {
 	for k, v := range s.states {
 		dataBytes, _ := s.dataBytes[k]
 
-		fmt.Printf("  State %10v lastet %v and processed %v bytes\n", k, v, dataBytes)
+		fmt.Printf("  State %10v lastet %v and processed %v bytes (%v)\n", k, v, dataBytes, humanize.Bytes(dataBytes))
 	}
 
 	s.lock.Unlock()
@@ -45,11 +46,15 @@ func (s *Stats) addStateTime(state lib.XdeltaState, duration time.Duration) {
 }
 
 func (s *Stats) addDataBytes(state lib.XdeltaState, amount int) {
+	if amount <= 0 {
+		return
+	}
+
 	s.lock.Lock()
 
 	prev, _ := s.dataBytes[state]
 
-	s.dataBytes[state] = prev + int64(amount)
+	s.dataBytes[state] = prev + uint64(amount)
 
 	s.lock.Unlock()
 }