add cmd/dump - a dumper

Walk needed to be added to NeedleMap and CompactMap, to be able to add WalkKeys and WalkValues to volume. This is needed for iterating through all the stored needles in a volume - this was dump's purpose.

1 files changed, 26 insertions, 27 deletions

diff --git a/weed-fs/src/pkg/util/bytes.go b/weed-fs/src/pkg/util/bytes.go
index 177da06db..6cc3d7018 100644
--- a/weed-fs/src/pkg/util/bytes.go
+++ b/weed-fs/src/pkg/util/bytes.go
@@ -1,34 +1,33 @@
 package util
 
-func BytesToUint64(b []byte)(v uint64){
-  length := uint(len(b))
-  for i :=uint(0);i<length-1;i++ {
-    v += uint64(b[i])
-    v <<= 8
-  }
-  v+=uint64(b[length-1])
-  return
+func BytesToUint64(b []byte) (v uint64) {
+	length := uint(len(b))
+	for i := uint(0); i < length-1; i++ {
+		v += uint64(b[i])
+		v <<= 8
+	}
+	v += uint64(b[length-1])
+	return
 }
-func BytesToUint32(b []byte)(v uint32){
-  length := uint(len(b))
-  for i :=uint(0);i<length-1;i++ {
-    v += uint32(b[i])
-    v <<= 8
-  }
-  v+=uint32(b[length-1])
-  return
+func BytesToUint32(b []byte) (v uint32) {
+	length := uint(len(b))
+	for i := uint(0); i < length-1; i++ {
+		v += uint32(b[i])
+		v <<= 8
+	}
+	v += uint32(b[length-1])
+	return
 }
-func Uint64toBytes(b []byte, v uint64){
-  for i :=uint(0);i<8;i++ {
-    b[7-i] = byte(v>>(i*8))
-  }
+func Uint64toBytes(b []byte, v uint64) {
+	for i := uint(0); i < 8; i++ {
+		b[7-i] = byte(v >> (i * 8))
+	}
 }
-func Uint32toBytes(b []byte, v uint32){
-  for i :=uint(0);i<4;i++ {
-    b[3-i] = byte(v>>(i*8))
-  }
+func Uint32toBytes(b []byte, v uint32) {
+	for i := uint(0); i < 4; i++ {
+		b[3-i] = byte(v >> (i * 8))
+	}
 }
-func Uint8toBytes(b []byte, v uint8){
-  b[0] = byte(v)
+func Uint8toBytes(b []byte, v uint8) {
+	b[0] = byte(v)
 }
-