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.
38 lines
1.0 KiB
38 lines
1.0 KiB
/*
|
|
* Mini Object Storage, (C) 2014 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 crc32c
|
|
|
|
// #include <stdint.h>
|
|
// uint32_t crc32c_pcl(uint8_t *buf, int32_t len, uint32_t prev_crc);
|
|
import "C"
|
|
import (
|
|
"errors"
|
|
"unsafe"
|
|
)
|
|
|
|
func Crc32c(buffer []byte) (uint32, error) {
|
|
var length = len(buffer)
|
|
if length == 0 {
|
|
return 0, errors.New("Invalid input")
|
|
}
|
|
|
|
var cbuf *C.uint8_t
|
|
cbuf = (*C.uint8_t)(unsafe.Pointer(&buffer[0]))
|
|
crc := C.crc32c_pcl(cbuf, C.int32_t(length), C.uint32_t(0))
|
|
|
|
return uint32(crc), nil
|
|
}
|
|
|