Merge remote-tracking branch 'upstream/master'

1 files changed, 40 insertions, 0 deletions

diff --git a/weed/util/bytes.go b/weed/util/bytes.go
index 9c7e5e2cb..0650919c0 100644
--- a/weed/util/bytes.go
+++ b/weed/util/bytes.go
@@ -2,9 +2,26 @@ package util
 
 import (
 	"crypto/md5"
+	"fmt"
 	"io"
 )
 
+// BytesToHumanReadable returns the converted human readable representation of the bytes.
+func BytesToHumanReadable(b uint64) string {
+	const unit = 1024
+	if b < unit {
+		return fmt.Sprintf("%d B", b)
+	}
+
+	div, exp := uint64(unit), 0
+	for n := b / unit; n >= unit; n /= unit {
+		div *= unit
+		exp++
+	}
+
+	return fmt.Sprintf("%.2f %ciB", float64(b)/float64(div), "KMGTPE"[exp])
+}
+
 // big endian
 
 func BytesToUint64(b []byte) (v uint64) {
@@ -74,3 +91,26 @@ func HashStringToLong(dir string) (v int64) {
 
 	return
 }
+
+func HashToInt32(data []byte) (v int32) {
+	h := md5.New()
+	h.Write(data)
+
+	b := h.Sum(nil)
+
+	v += int32(b[0])
+	v <<= 8
+	v += int32(b[1])
+	v <<= 8
+	v += int32(b[2])
+	v <<= 8
+	v += int32(b[3])
+
+	return
+}
+
+func Md5(data []byte) string {
+	hash := md5.New()
+	hash.Write(data)
+	return fmt.Sprintf("%x", hash.Sum(nil))
+}