darkhandz

import Foundation

extension String {
    /// 用GBK编码时的长度
    var gbkLength: Int {
        let cfEncoding = CFStringEncodings.GB_18030_2000
        let encoding = CFStringConvertEncodingToNSStringEncoding(CFStringEncoding(cfEncoding.rawValue))
        let gbkData = (self as NSString).data(using: encoding)!
        let gbkBytes = [UInt8](gbkData)
        return gbkBytes.count