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MyDate.js
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330 lines (312 loc) · 10.7 KB
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/**
* 日期时间处理类
*/
export class MyDate {
constructor(year, month, day, hour, minute, second) {
if (year instanceof Date) {
// 构造函数重载：接受Date对象
this.Year = year.getFullYear();
this.Month = year.getMonth() + 1;
this.Day = year.getDate();
this.Hour = year.getHours();
this.Minute = year.getMinutes();
this.Second = year.getSeconds();
} else if (typeof year === 'number' && month === undefined) {
// 构造函数重载：接受数字（像Excel日期值）
let num = year;
let days = Math.floor(num);
if (days > 365) {
// 从1900年1月1日开始计算
let start = new Date(1900, 0, 1);
let targetDate = new Date(start);
targetDate.setDate(targetDate.getDate() + days - 2);
this.Year = targetDate.getFullYear();
this.Month = targetDate.getMonth() + 1;
this.Day = targetDate.getDate();
} else {
this.Year = null;
this.Month = null;
this.Day = days;
}
let d = num - days;
this.Hour = Math.floor(d * 24);
this.Minute = Math.floor((d * 24 - this.Hour) * 60);
this.Second = Math.round(((d * 24 - this.Hour) * 60 - this.Minute) * 60);
if (this.Second === 60) {
this.Second = 0;
this.Minute++;
if (this.Minute === 60) {
this.Minute = 0;
this.Hour++;
}
}
} else if (typeof year === 'object' && year !== null && 'days' in year) {
// 构造函数重载：接受时间跨度对象
let timeSpan = year;
this.Year = null;
this.Month = null;
this.Day = timeSpan.days || 0;
this.Hour = timeSpan.hours || 0;
this.Minute = timeSpan.minutes || 0;
this.Second = timeSpan.seconds || 0;
} else {
// 构造函数重载：接受年、月、日、时、分、秒
this.Year = year;
this.Month = month;
this.Day = day;
this.Hour = hour || 0;
this.Minute = minute || 0;
this.Second = second || 0;
}
}
/**
* 转换为字符串
*/
toString(format) {
if (format) {
// 这里可以实现格式化功能，暂时返回默认格式
return this.toString();
}
if (this.Year != null && this.Year > 0) {
return `${this.Year}-${this.Month.toString().padStart(2, '0')}-${this.Day.toString().padStart(2, '0')} ${this.Hour.toString().padStart(2, '0')}:${this.Minute.toString().padStart(2, '0')}:${this.Second.toString().padStart(2, '0')}`;
} else {
let result = '';
if (this.Day != null && this.Day > 0) {
result += `${this.Day} `;
}
result += `${this.Hour.toString().padStart(2, '0')}:${this.Minute.toString().padStart(2, '0')}:${this.Second.toString().padStart(2, '0')}`;
return result;
}
}
/**
* 转换为Date对象
*/
ToDateTime(dateTimeKind) {
if (this.Year != null && this.Year > 0) {
if (dateTimeKind === 0) {
// UTC时间
return new Date(Date.UTC(this.Year, this.Month - 1, this.Day, this.Hour, this.Minute, this.Second));
} else {
// 本地时间
return new Date(this.Year, this.Month - 1, this.Day, this.Hour, this.Minute, this.Second);
}
}
// 只有时间部分，返回从1970年1月1日开始的时间
return new Date(1970, 0, 1 + (this.Day || 0), this.Hour, this.Minute, this.Second);
}
/**
* 转换为时间跨度对象
*/
ToTimeSpan() {
return {
days: this.Day || 0,
hours: this.Hour,
minutes: this.Minute,
seconds: this.Second
};
}
/**
* 添加年
*/
AddYears(year) {
let newYear = (this.Year || 0) + year;
return new MyDate(newYear, this.Month, this.Day, this.Hour, this.Minute, this.Second);
}
/**
* 添加月
*/
AddMonths(month) {
let newMonth = (this.Month || 0) + month;
if (newMonth >= 1 && newMonth <= 12) {
return new MyDate(this.Year, newMonth, this.Day, this.Hour, this.Minute, this.Second);
}
// 如果月份超出范围，使用Date对象计算
let date = this.ToDateTime();
date.setMonth(date.getMonth() + month);
return new MyDate(date);
}
/**
* 添加日
*/
AddDays(day) {
if (this.Year != null && this.Year > 1900) {
let newDay = (this.Day || 0) + day;
if (newDay >= 1 && newDay <= 28) {
return new MyDate(this.Year, this.Month, newDay, this.Hour, this.Minute, this.Second);
}
// 如果日期超出范围，使用Date对象计算
let date = this.ToDateTime();
date.setDate(date.getDate() + day);
return new MyDate(date);
}
// 只有时间部分，直接添加天数
return new MyDate(null, null, (this.Day || 0) + day, this.Hour, this.Minute, this.Second);
}
/**
* 添加时
*/
AddHours(hour) {
let newHour = this.Hour + hour;
if (newHour >= 0 && newHour < 24) {
return new MyDate(this.Year, this.Month, this.Day, newHour, this.Minute, this.Second);
}
if (this.Year != null && this.Year > 1900) {
// 使用Date对象计算
let date = this.ToDateTime();
date.setHours(date.getHours() + hour);
return new MyDate(date);
}
// 只有时间部分，计算总小时数
let totalHours = this.Hour + hour;
let days = Math.floor(totalHours / 24);
let remainingHours = totalHours % 24;
if (remainingHours < 0) {
remainingHours += 24;
days--;
}
return new MyDate(null, null, (this.Day || 0) + days, remainingHours, this.Minute, this.Second);
}
/**
* 添加分
*/
AddMinutes(minute) {
let newMinute = this.Minute + minute;
if (newMinute >= 0 && newMinute <= 59) {
return new MyDate(this.Year, this.Month, this.Day, this.Hour, newMinute, this.Second);
}
if (this.Year != null && this.Year > 1900) {
// 使用Date对象计算
let date = this.ToDateTime();
date.setMinutes(date.getMinutes() + minute);
return new MyDate(date);
}
// 只有时间部分，计算总分钟数
let totalMinutes = this.Minute + minute;
let hours = Math.floor(totalMinutes / 60);
let remainingMinutes = totalMinutes % 60;
if (remainingMinutes < 0) {
remainingMinutes += 60;
hours--;
}
return this.AddHours(hours).AddMinutes(remainingMinutes);
}
/**
* 添加秒
*/
AddSeconds(second) {
let newSecond = this.Second + second;
if (newSecond >= 0 && newSecond <= 59) {
return new MyDate(this.Year, this.Month, this.Day, this.Hour, this.Minute, newSecond);
}
if (this.Year != null && this.Year > 1900) {
// 使用Date对象计算
let date = this.ToDateTime();
date.setSeconds(date.getSeconds() + second);
return new MyDate(date);
}
// 只有时间部分，计算总秒数
let totalSeconds = this.Second + second;
let minutes = Math.floor(totalSeconds / 60);
let remainingSeconds = totalSeconds % 60;
if (remainingSeconds < 0) {
remainingSeconds += 60;
minutes--;
}
return this.AddMinutes(minutes).AddSeconds(remainingSeconds);
}
/**
* 转换为长整型数字，格式：年月日时分秒
*/
ToLong() {
let d = 0;
if (this.Year != null) {
d += this.Year * 10000000000;
}
if (this.Month != null) {
d += this.Month * 100000000;
}
if (this.Day != null) {
d += this.Day * 1000000;
}
d += this.Hour * 10000;
d += this.Minute * 100;
d += this.Second;
return d;
}
/**
* 静态方法：解析字符串为MyDate对象
*/
static Parse(txt) {
let t = txt.trim();
// 匹配年月日 时分秒格式
let dateTimeRegex = /^(\d{4})[-/](\d{1,2})[-/](\d{1,2})\s+(\d{1,2}):(\d{1,2}):(\d{1,2})$/;
let match = t.match(dateTimeRegex);
if (match) {
return new MyDate(
parseInt(match[1]),
parseInt(match[2]),
parseInt(match[3]),
parseInt(match[4]),
parseInt(match[5]),
parseInt(match[6])
);
}
// 匹配年月日 时分格式
let dateTimeRegex2 = /^(\d{4})[-/](\d{1,2})[-/](\d{1,2})\s+(\d{1,2}):(\d{1,2})$/;
match = t.match(dateTimeRegex2);
if (match) {
return new MyDate(
parseInt(match[1]),
parseInt(match[2]),
parseInt(match[3]),
parseInt(match[4]),
parseInt(match[5]),
0
);
}
// 匹配年月日格式
let dateRegex = /^(\d{4})[-/](\d{1,2})[-/](\d{1,2})$/;
match = t.match(dateRegex);
if (match) {
return new MyDate(
parseInt(match[1]),
parseInt(match[2]),
parseInt(match[3]),
0,
0,
0
);
}
// 匹配时分秒格式
let timeRegex = /^(\d{1,2}):(\d{1,2}):(\d{1,2})$/;
match = t.match(timeRegex);
if (match) {
return new MyDate(
null,
null,
null,
parseInt(match[1]),
parseInt(match[2]),
parseInt(match[3])
);
}
// 匹配时分格式
let timeRegex2 = /^(\d{1,2}):(\d{1,2})$/;
match = t.match(timeRegex2);
if (match) {
return new MyDate(
null,
null,
null,
parseInt(match[1]),
parseInt(match[2]),
0
);
}
return null;
}
}
// 浏览器支持
if (typeof window !== 'undefined') {
window.MyDate = MyDate;
}