package sysfs

import (
	"io/ioutil"
	"strconv"
	"strings"
)

// ContentUint64 parses the content of a file in sysfs, and convert
// from hex to uint64.
func ContentUint64(path string) (uint64, error) {
	content, err := ioutil.ReadFile(path)
	if err != nil {
		return 0, err
	}
	result, err := strconv.ParseUint(strings.TrimSpace(string(content)), 0, 64)
	if err != nil {
		return 0, err
	}
	return result, nil
}