356 lines
8.4 KiB
Dart
356 lines
8.4 KiB
Dart
import 'dart:core';
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class IDCardInfo {
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final String raw;
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final bool isValid;
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final String? error;
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final String? id18;
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final String? addressCode;
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final String? provinceCode;
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final String? province;
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final DateTime? birthDate;
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final String? birth;
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final int? age;
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final String? gender;
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final bool checksumValid;
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final String? constellation;
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final String? zodiac;
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IDCardInfo({
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required this.raw,
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required this.isValid,
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this.error,
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this.id18,
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this.addressCode,
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this.provinceCode,
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this.province,
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this.birthDate,
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this.birth,
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this.age,
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this.gender,
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required this.checksumValid,
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this.constellation,
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this.zodiac,
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});
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Map<String, dynamic> toJson() => {
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'raw': raw,
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'isValid': isValid,
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'error': error,
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'id18': id18,
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'addressCode': addressCode,
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'provinceCode': provinceCode,
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'province': province,
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'birth': birth,
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'age': age,
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'gender': gender,
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'checksumValid': checksumValid,
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'constellation': constellation,
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'zodiac': zodiac,
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};
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@override
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String toString() => toJson().toString();
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}
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/// 只校验 18 位身份证号
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IDCardInfo parseChineseIDCard(String? id) {
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final raw = _normalizeId(id);
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if (raw.isEmpty) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '身份证号不能为空',
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checksumValid: false,
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);
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}
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if (raw.length != 18) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '身份证号长度不正确，应为18位',
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checksumValid: false,
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);
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}
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if (!RegExp(r'^\d{17}[\dX]$').hasMatch(raw)) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '身份证号格式不正确：前17位必须是数字，最后一位必须是数字或X',
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checksumValid: false,
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);
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}
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const provinceMap = <String, String>{
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'11': '北京市',
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'12': '天津市',
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'13': '河北省',
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'14': '山西省',
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'15': '内蒙古自治区',
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'21': '辽宁省',
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'22': '吉林省',
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'23': '黑龙江省',
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'31': '上海市',
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'32': '江苏省',
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'33': '浙江省',
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'34': '安徽省',
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'35': '福建省',
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'36': '江西省',
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'37': '山东省',
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'41': '河南省',
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'42': '湖北省',
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'43': '湖南省',
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'44': '广东省',
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'45': '广西壮族自治区',
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'46': '海南省',
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'50': '重庆市',
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'51': '四川省',
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'52': '贵州省',
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'53': '云南省',
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'54': '西藏自治区',
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'61': '陕西省',
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'62': '甘肃省',
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'63': '青海省',
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'64': '宁夏回族自治区',
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'65': '新疆维吾尔自治区',
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'71': '台湾省',
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'81': '香港特别行政区',
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'82': '澳门特别行政区',
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'91': '国外',
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};
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final addressCode = raw.substring(0, 6);
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final provinceCode = raw.substring(0, 2);
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final province = provinceMap[provinceCode];
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if (province == null) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '地址码不合法：省份码错误',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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checksumValid: false,
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);
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}
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final yearStr = raw.substring(6, 10);
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final monthStr = raw.substring(10, 12);
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final dayStr = raw.substring(12, 14);
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if (!RegExp(r'^(18|19|20)\d{2}$').hasMatch(yearStr)) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '年份不合法：必须以18、19或20开头',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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checksumValid: false,
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);
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}
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if (!RegExp(r'^(0[1-9]|1[0-2])$').hasMatch(monthStr)) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '月份不合法：必须在01到12之间',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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checksumValid: false,
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);
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}
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if (!RegExp(r'^(0[1-9]|[12]\d|3[01])$').hasMatch(dayStr)) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '日期不合法：必须在01到31之间',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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checksumValid: false,
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);
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}
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final year = int.parse(yearStr);
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final month = int.parse(monthStr);
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final day = int.parse(dayStr);
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DateTime? birthDate;
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try {
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final dt = DateTime(year, month, day);
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if (dt.year == year && dt.month == month && dt.day == day) {
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birthDate = dt;
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}
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} catch (_) {
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birthDate = null;
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}
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if (birthDate == null) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '出生日期无效：请检查年月日是否真实存在',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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checksumValid: false,
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);
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}
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final seqCode = raw.substring(14, 17);
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if (!RegExp(r'^\d{3}$').hasMatch(seqCode)) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '顺序码不合法：第15到17位必须全部为数字',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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birthDate: birthDate,
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birth: _formatDate(birthDate),
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checksumValid: false,
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);
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}
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final seqNum = int.parse(seqCode);
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if (seqNum == 0) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '顺序码不合法：不能为000',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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birthDate: birthDate,
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birth: _formatDate(birthDate),
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checksumValid: false,
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);
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}
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final gender = (seqNum % 2 == 1) ? '男' : '女';
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final checksumValid = _verifyCheck(raw);
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if (!checksumValid) {
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return IDCardInfo(
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raw: raw,
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isValid: false,
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error: '校验位不正确',
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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birthDate: birthDate,
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birth: _formatDate(birthDate),
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age: _calcAge(birthDate),
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gender: gender,
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checksumValid: false,
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constellation: _calcConstellation(birthDate.month, birthDate.day),
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zodiac: _calcChineseZodiac(birthDate.year),
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);
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}
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return IDCardInfo(
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raw: raw,
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isValid: true,
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id18: raw,
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addressCode: addressCode,
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provinceCode: provinceCode,
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province: province,
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birthDate: birthDate,
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birth: _formatDate(birthDate),
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age: _calcAge(birthDate),
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gender: gender,
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checksumValid: true,
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constellation: _calcConstellation(birthDate.month, birthDate.day),
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zodiac: _calcChineseZodiac(birthDate.year),
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);
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}
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String _normalizeId(String? id) {
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return (id ?? '')
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.trim()
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.replaceAll(' ', '')
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.replaceAll(' ', '')
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.replaceAll('Ｘ', 'X')
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.toUpperCase();
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}
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String _formatDate(DateTime d) {
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return '${d.year.toString().padLeft(4, '0')}-'
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'${d.month.toString().padLeft(2, '0')}-'
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'${d.day.toString().padLeft(2, '0')}';
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}
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int _calcAge(DateTime birthDate) {
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final now = DateTime.now();
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var age = now.year - birthDate.year;
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if (now.month < birthDate.month ||
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(now.month == birthDate.month && now.day < birthDate.day)) {
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age -= 1;
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}
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return age;
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}
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String _calcCheckChar(String id17) {
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const weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
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const checkMap = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
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int sum = 0;
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for (var i = 0; i < 17; i++) {
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final n = int.parse(id17[i]);
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sum += n * weights[i];
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}
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return checkMap[sum % 11];
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}
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bool _verifyCheck(String id18) {
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if (id18.length != 18) return false;
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final id17 = id18.substring(0, 17);
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final expected = _calcCheckChar(id17);
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final actual = id18[17].toUpperCase();
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return expected == actual;
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}
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String _calcConstellation(int month, int day) {
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const names = [
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'摩羯座',
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'水瓶座',
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'双鱼座',
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'白羊座',
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'金牛座',
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'双子座',
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'巨蟹座',
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'狮子座',
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'处女座',
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'天秤座',
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'天蝎座',
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'射手座'
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];
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const startDays = [20, 19, 21, 21, 21, 22, 23, 23, 23, 23, 22, 22];
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final idx = month - 1;
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if (day < startDays[idx]) {
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return names[(idx + 11) % 12];
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} else {
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return names[idx];
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}
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}
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String _calcChineseZodiac(int year) {
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const zodiacs = ['鼠', '牛', '虎', '兔', '龙', '蛇', '马', '羊', '猴', '鸡', '狗', '猪'];
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final idx = (year - 1900) % 12;
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final i = idx < 0 ? (idx + 12) % 12 : idx;
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return zodiacs[i];
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} |