| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package util |
| |
| //Bytes2long is a function which converts byte to int64 |
| func Bytes2long(b []byte, off int) int64 { |
| return int64(b[off+0])<<56 + int64(b[off+1])<<48 + int64(b[off+2]) + int64(b[off+3]) + |
| int64(b[off+4])<<24 + int64(b[off+5])<<16 + int64(b[off+6])<<8 + int64(b[off+7]) |
| } |
| |
| //Long2bytes is a function which converts int64 to byte |
| func Long2bytes(i int64, b []byte, off int) { |
| v := uint64(i) |
| b[off+7] = byte(v) |
| b[off+6] = byte(v >> 8) |
| b[off+5] = byte(v >> 16) |
| b[off+4] = byte(v >> 24) |
| b[off+3] = byte(v >> 32) |
| b[off+2] = byte(v >> 40) |
| b[off+1] = byte(v >> 48) |
| b[off+0] = byte(v >> 56) |
| } |
| |
| //Short2bytes is a function which converts int to byte |
| func Short2bytes(value int, b []byte, off int) { |
| v := value |
| b[off+1] = byte(v) |
| b[off+0] = byte(v >> 8) |
| } |
| |
| //Bytes2short is a function which converts byte to int |
| func Bytes2short(b []byte, off int) uint16 { |
| return (uint16)(((b[off+1] & 0xFF) << 0) + |
| ((b[off+0]) << 8)) |
| } |
| |
| //Int2bytes is a function which converts int to byte |
| func Int2bytes(value int, b []byte, off int) { |
| v := uint32(value) |
| b[off+3] = byte(v) |
| b[off+2] = byte(v >> 8) |
| b[off+1] = byte(v >> 16) |
| b[off+0] = byte(v >> 24) |
| } |
| |
| //Bytes2int is a function which converts byte to int |
| func Bytes2int(b []byte, off int) int32 { |
| return int32(b[0+off])<<24 + int32(b[1+off])<<16 + int32(b[2+off])<<8 + int32(b[3+off]) |
| } |
| |
| //S2ByteSlice is a function which converts string slice to byte slice |
| func S2ByteSlice(str []string) [][]byte { |
| b := make([][]byte, len(str)) |
| for i, s := range str { |
| b[i] = []byte(s) |
| } |
| return b |
| } |