/*
 * 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

import (
	"errors"
	"hash/crc32"
)

var castanagoliTable = crc32.MakeTable(crc32.Castagnoli)

func Crc32c(buffer []byte) (uint32, error) {
	crc := crc32.New(castanagoliTable)
	if len(buffer) <= 0 {
		return 0, errors.New("input buffer cannot be null")
	}
	crc.Write(buffer)
	return crc.Sum32(), nil
}