61 lines
1.8 KiB
Rust
61 lines
1.8 KiB
Rust
use std::time::{SystemTime, UNIX_EPOCH};
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pub fn noop_datetime() -> String {
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"".to_string()
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}
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/// Get the current time in the format yyyy-mm-dd hh:mm:ss
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pub fn utc_current_time() -> String {
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// Get the current system time
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let now = SystemTime::now();
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// Convert the adjusted time to a formatted string
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match now.duration_since(UNIX_EPOCH) {
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Ok(duration) => {
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let secs = duration.as_secs();
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let days = secs / (24 * 3600);
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let mut years = 1970;
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let mut days_left = days;
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// Adjusting for leap years
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loop {
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let days_in_year = if is_leap_year(years) { 366 } else { 365 };
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if days_left < days_in_year {
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break;
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}
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days_left -= days_in_year;
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years += 1;
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}
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let (month, day) = days_to_date(days_left, is_leap_year(years));
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let hours = (secs / 3600) % 24;
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let minutes = (secs / 60) % 60;
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let seconds = secs % 60;
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format!("{:04}-{:02}-{:02} {:02}:{:02}:{:02}", years, month + 1, day, hours, minutes, seconds)
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}
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Err(_) => "0".to_string(),
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}
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}
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// Check if a year is a leap year
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fn is_leap_year(year: u64) -> bool {
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(year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)
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}
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// Calculate the month and day from the number of days since UNIX epoch
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fn days_to_date(days: u64, leap: bool) -> (u64, u64) {
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let days_in_month = [31, if leap { 29 } else { 28 }, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
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let mut days_left = days;
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let mut month = 0;
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while days_left >= days_in_month[month as usize] {
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days_left -= days_in_month[month as usize];
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month += 1;
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}
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(month, days_left + 1) // Adding 1 to day to make it 1-based
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}
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