byte delta

Author: CC11001100

byte.go

@@ -1,26 +1,44 @@
 package delta
 
-// ByteSliceDelta 字节数组
-func ByteSliceDelta(bytes []byte) []byte {
-	result := make([]byte, 0)
-	for index, value := range bytes {
-		if index == 0 {
-			result[index] = value
-		} else {
-			result[index] = bytes[index-1] - value
-		}
-	}
-	return result
-}
+// ToByteSliceDelta 不单独实现了，直接认为是int的一种特殊情况，为了调用方的代码可读性这里就给个别名
+var ToByteSliceDelta = ToIntegerSliceDelta[byte]
+var FromByteSliceDelta = FromIntegerSliceDelta[byte]
 
-func ByteSliceFromDelta(bytes []byte) []byte {
-	result := make([]byte, 0)
-	for index, value := range bytes {
-		if index == 0 {
-			result[index] = value
-		} else {
-			result[index] = result[index-1] + value
-		}
-	}
-	return result
-}
+//// ToByteSliceDelta 字节数组
+//func ToByteSliceDelta(bytes []byte, compareToType CompareToType) []byte {
+//	deltaSlice := make([]byte, 0)
+//	for index, byteValue := range bytes {
+//		if index == 0 {
+//			deltaSlice[index] = byteValue
+//			continue
+//		}
+//		switch compareToType {
+//		case CompareToFirst:
+//			deltaSlice[index] = byteValue - bytes[0]
+//		case CompareToLast:
+//			deltaSlice[index] = byteValue - bytes[index-1]
+//		default:
+//			panic(fmt.Errorf("not support compare type: %#v", compareToType))
+//		}
+//	}
+//	return deltaSlice
+//}
+
+//func FromByteSliceDelta(deltaSlice []byte, compareToType CompareToType) []byte {
+//	bytes := make([]byte, 0)
+//	for index, delta := range deltaSlice {
+//		if index == 0 {
+//			bytes[index] = delta
+//			continue
+//		}
+//		switch compareToType {
+//		case CompareToFirst:
+//			bytes[index] = bytes[index-1] + delta
+//		case CompareToLast:
+//			bytes[index] = bytes[index-1] + delta
+//		default:
+//			panic(fmt.Errorf("not support compare type: %#v", compareToType))
+//		}
+//	}
+//	return bytes
+//}