sdf

book_with_bridge/du/main.go

@@ -5,8 +5,12 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"time"
 )
 
+
+var verbos = flag.Bool("v",false,"show verbose")
+
 func main() {
 	flag.Parse()
 	roots := flag.Args()
@@ -23,13 +27,25 @@ func main() {
 		close(fileSizes)
 	}()
 
-	var nfiles,nbytes int64
-	for size := range fileSizes {
-		nfiles++
-		nbytes += size
-	}
-	printDU(nfiles,nbytes)
+	var tick <- chan time.Time
 
+	if *verbos{
+		tick = time.Tick(500 * time.Millisecond)
+	}
+	var nfiles,nbytes int64
+loop:
+	for {
+		select {
+		case size,ok := <- fileSizes:
+			if !ok {
+				break loop
+			}
+			nfiles++
+			nbytes += size
+		case <- tick:
+			printDU(nfiles,nbytes)
+		}
+	}
 }
 
 func printDU(nfiles, nbytes int64) {
@@ -50,7 +66,6 @@ func WalkDir(dir string, fileSizes chan <- int64) {
 
 func dirents(dir string) []os.DirEntry{
 	entries, err := os.ReadDir(dir)
-	fmt.Println(entries)
 	if err != nil {
 		fmt.Fprintf(os.Stderr,"du1: %v\n",err)
 		return  nil