github.com/matrixorigin/matrixone@v1.2.0/pkg/common/util/uuid.go (about)

     1  // Copyright 2021 - 2023 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package util
    16  
    17  import "encoding/hex"
    18  
    19  // EncodeUUIDHex encode uuid to string
    20  // len(dst) >= 36, and uuid must be [16]byte
    21  func EncodeUUIDHex(dst []byte, uuid []byte) {
    22  	hex.Encode(dst, uuid[:4])
    23  	dst[8] = '-'
    24  	hex.Encode(dst[9:13], uuid[4:6])
    25  	dst[13] = '-'
    26  	hex.Encode(dst[14:18], uuid[6:8])
    27  	dst[18] = '-'
    28  	hex.Encode(dst[19:23], uuid[8:10])
    29  	dst[23] = '-'
    30  	hex.Encode(dst[24:], uuid[10:16])
    31  }