如何判断某个IP是否在某IP段范围内

function ipToLong(ip: string): number {
  const parts = ip.split('.').map(part => parseInt(part));
  return parts[0] * Math.pow(256, 3) + parts[1] * Math.pow(256, 2) + parts[2] * 256 + parts[3];
}

function isIPInRange(ip: string, startIP: string, endIP: string): boolean {
  const ipNum = ipToLong(ip);
  const startIPNum = ipToLong(startIP);
  const endIPNum = ipToLong(endIP);

  return ipNum >= startIPNum && ipNum <= endIPNum;
}

@Entry
@Component
struct JudgeIp {
  judge() {
    const targetIP = '192.168.9.230';
    const startIP = '10.101.10.210';
    const endIP = '255.201.255.1';

    let res = isIPInRange(targetIP, startIP, endIP);
    try {
      this.getUIContext().getPromptAction().showToast({ message: `目标ip地址是否在范围内: ${res}` });
    } catch (error) {
      console.error(`Error code: ${error.code}, Message: ${error.message}`);
    }
  }

  build() {
    Column() {
      Button('查询').onClick(() => {
        this.judge();
      });
    }.width('100%').height('100%').justifyContent(FlexAlign.Center);
  }
}