You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1.0 KiB
39 lines
1.0 KiB
5 years ago
|
/*
|
||
|
|
* Minio Cloud Storage, (C) 2019 Minio, Inc.
|
||
|
|
*
|
||
|
|
* Licensed 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 encoding
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/minio/minio/pkg/s3select/internal/parquet-go/common"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Refer https://en.wikipedia.org/wiki/LEB128#Unsigned_LEB128
|
||
|
|
func varIntEncode(ui64 uint64) []byte {
|
||
|
|
if ui64 == 0 {
|
||
|
|
return []byte{0}
|
||
|
|
}
|
||
|
|
|
||
|
|
length := int(common.BitWidth(ui64)+6) / 7
|
||
|
|
data := make([]byte, length)
|
||
|
|
for i := 0; i < length; i++ {
|
||
|
|
data[i] = byte(ui64&0x7F) | 0x80
|
||
|
|
ui64 >>= 7
|
||
|
|
}
|
||
|
|
data[length-1] &= 0x7F
|
||
|
|
|
||
|
|
return data
|
||
|
|
}
|