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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /v_windows/v/old/vlib/time/time.v
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Adds most of the toolsHEADmaster
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+// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+module time
+
+#include <time.h>
+
+pub const (
+ days_string = 'MonTueWedThuFriSatSun'
+ month_days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
+ months_string = 'JanFebMarAprMayJunJulAugSepOctNovDec'
+ // The unsigned zero year for internal calculations.
+ // Must be 1 mod 400, and times before it will not compute correctly,
+ // but otherwise can be changed at will.
+ absolute_zero_year = i64(-292277022399) // as i64
+ seconds_per_minute = 60
+ seconds_per_hour = 60 * seconds_per_minute
+ seconds_per_day = 24 * seconds_per_hour
+ seconds_per_week = 7 * seconds_per_day
+ days_per_400_years = 365 * 400 + 97
+ days_per_100_years = 365 * 100 + 24
+ days_per_4_years = 365 * 4 + 1
+ days_before = [
+ 0,
+ 31,
+ 31 + 28,
+ 31 + 28 + 31,
+ 31 + 28 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
+ 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31,
+ ]
+ long_days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday',
+ 'Sunday',
+ ]
+)
+
+// Time contains various time units for a point in time.
+pub struct Time {
+pub:
+ year int
+ month int
+ day int
+ hour int
+ minute int
+ second int
+ microsecond int
+ unix u64
+}
+
+// FormatDelimiter contains different time formats.
+pub enum FormatTime {
+ hhmm12
+ hhmm24
+ hhmmss12
+ hhmmss24
+ hhmmss24_milli
+ hhmmss24_micro
+ no_time
+}
+
+// FormatDelimiter contains different date formats.
+pub enum FormatDate {
+ ddmmyy
+ ddmmyyyy
+ mmddyy
+ mmddyyyy
+ mmmd
+ mmmdd
+ mmmddyy
+ mmmddyyyy
+ no_date
+ yyyymmdd
+ yymmdd
+}
+
+// FormatDelimiter contains different time/date delimiters.
+pub enum FormatDelimiter {
+ dot
+ hyphen
+ slash
+ space
+ no_delimiter
+}
+
+// C.timeval represents a C time value.
+pub struct C.timeval {
+ tv_sec u64
+ tv_usec u64
+}
+
+fn C.localtime(t &C.time_t) &C.tm
+
+fn C.time(t &C.time_t) C.time_t
+
+// now returns current local time.
+pub fn now() Time {
+ $if macos {
+ return darwin_now()
+ }
+ $if windows {
+ return win_now()
+ }
+ $if solaris {
+ return solaris_now()
+ }
+ $if linux || android {
+ return linux_now()
+ }
+ // defaults to most common feature, the microsecond precision is not available
+ // in this API call
+ t := C.time(0)
+ now := C.localtime(&t)
+ return convert_ctime(*now, 0)
+}
+
+// utc returns the current UTC time.
+pub fn utc() Time {
+ $if macos {
+ return darwin_utc()
+ }
+ $if windows {
+ return win_utc()
+ }
+ $if solaris {
+ return solaris_utc()
+ }
+ $if linux || android {
+ return linux_utc()
+ }
+ // defaults to most common feature, the microsecond precision is not available
+ // in this API call
+ t := C.time(0)
+ _ = C.time(&t)
+ return unix2(i64(t), 0)
+}
+
+// smonth returns month name.
+pub fn (t Time) smonth() string {
+ if t.month <= 0 || t.month > 12 {
+ return '---'
+ }
+ i := t.month - 1
+ return time.months_string[i * 3..(i + 1) * 3]
+}
+
+// new_time returns a time struct with calculated Unix time.
+pub fn new_time(t Time) Time {
+ if t.unix != 0 {
+ return t
+ }
+ tt := C.tm{
+ tm_sec: t.second
+ tm_min: t.minute
+ tm_hour: t.hour
+ tm_mday: t.day
+ tm_mon: t.month - 1
+ tm_year: t.year - 1900
+ }
+ utime := u64(make_unix_time(tt))
+ return Time{
+ ...t
+ unix: utime
+ }
+}
+
+// unix_time returns Unix time.
+[inline]
+pub fn (t Time) unix_time() int {
+ return int(t.unix)
+}
+
+// unix_time_milli returns Unix time with millisecond resolution.
+[inline]
+pub fn (t Time) unix_time_milli() u64 {
+ return t.unix * 1000 + u64(t.microsecond / 1000)
+}
+
+// add returns a new time that duration is added
+pub fn (t Time) add(d Duration) Time {
+ microseconds := i64(t.unix) * 1000 * 1000 + t.microsecond + d.microseconds()
+ unix := microseconds / (1000 * 1000)
+ micro := microseconds % (1000 * 1000)
+ return unix2(unix, int(micro))
+}
+
+// add_seconds returns a new time struct with an added number of seconds.
+pub fn (t Time) add_seconds(seconds int) Time {
+ return t.add(seconds * time.second)
+}
+
+// add_days returns a new time struct with an added number of days.
+pub fn (t Time) add_days(days int) Time {
+ return t.add(days * 24 * time.hour)
+}
+
+// since returns a number of seconds elapsed since a given time.
+fn since(t Time) int {
+ // TODO Use time.Duration instead of seconds
+ return 0
+}
+
+// relative returns a string representation of the difference between t
+// and the current time.
+pub fn (t Time) relative() string {
+ znow := now()
+ secs := znow.unix - t.unix
+ if secs <= 30 {
+ // right now or in the future
+ // TODO handle time in the future
+ return 'now'
+ }
+ if secs < 60 {
+ return '1m'
+ }
+ if secs < 3600 {
+ m := secs / 60
+ if m == 1 {
+ return '1 minute ago'
+ }
+ return '$m minutes ago'
+ }
+ if secs < 3600 * 24 {
+ h := secs / 3600
+ if h == 1 {
+ return '1 hour ago'
+ }
+ return '$h hours ago'
+ }
+ if secs < 3600 * 24 * 5 {
+ d := secs / 3600 / 24
+ if d == 1 {
+ return '1 day ago'
+ }
+ return '$d days ago'
+ }
+ if secs > 3600 * 24 * 10000 {
+ return ''
+ }
+ return t.md()
+}
+
+// relative_short returns a string saying how long ago a time occured as follows:
+// 0-30 seconds: `"now"`; 30-60 seconds: `"1m"`; anything else is rounded to the
+// nearest minute, hour or day; anything higher than 10000 days (about 27 years)
+// years returns an empty string.
+// Some Examples:
+// `0s -> 'now'`;
+// `20s -> 'now'`;
+// `47s -> '1m'`;
+// `456s -> '7m'`;
+// `1234s -> '20m'`;
+// `16834s -> '4h'`;
+// `1687440s -> '33d'`;
+// `15842354871s -> ''`
+pub fn (t Time) relative_short() string {
+ znow := now()
+ secs := znow.unix - t.unix
+ if secs <= 30 {
+ // right now or in the future
+ // TODO handle time in the future
+ return 'now'
+ }
+ if secs < 60 {
+ return '1m'
+ }
+ if secs < 3600 {
+ return '${secs / 60}m'
+ }
+ if secs < 3600 * 24 {
+ return '${secs / 3600}h'
+ }
+ if secs < 3600 * 24 * 5 {
+ return '${secs / 3600 / 24}d'
+ }
+ if secs > 3600 * 24 * 10000 {
+ return ''
+ }
+ return t.md()
+}
+
+// day_of_week returns the current day of a given year, month, and day,
+// as an integer.
+pub fn day_of_week(y int, m int, d int) int {
+ // Sakomotho's algorithm is explained here:
+ // https://stackoverflow.com/a/6385934
+ t := [0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4]
+ mut sy := y
+ if m < 3 {
+ sy = sy - 1
+ }
+ return (sy + sy / 4 - sy / 100 + sy / 400 + t[m - 1] + d - 1) % 7 + 1
+}
+
+// day_of_week returns the current day as an integer.
+pub fn (t Time) day_of_week() int {
+ return day_of_week(t.year, t.month, t.day)
+}
+
+// weekday_str returns the current day as a string.
+pub fn (t Time) weekday_str() string {
+ i := t.day_of_week() - 1
+ return time.days_string[i * 3..(i + 1) * 3]
+}
+
+// weekday_str returns the current day as a string.
+pub fn (t Time) long_weekday_str() string {
+ i := t.day_of_week() - 1
+ return time.long_days[i]
+}
+
+// ticks returns a number of milliseconds elapsed since system start.
+pub fn ticks() i64 {
+ $if windows {
+ return C.GetTickCount()
+ } $else {
+ ts := C.timeval{}
+ C.gettimeofday(&ts, 0)
+ return i64(ts.tv_sec * u64(1000) + (ts.tv_usec / u64(1000)))
+ }
+ // t := i64(C.mach_absolute_time())
+ // # Nanoseconds elapsedNano = AbsoluteToNanoseconds( *(AbsoluteTime *) &t );
+ // # return (double)(* (uint64_t *) &elapsedNano) / 1000000;
+}
+
+/*
+// sleep makes the calling thread sleep for a given number of seconds.
+[deprecated: 'call time.sleep(n * time.second)']
+pub fn sleep(seconds int) {
+ wait(seconds * time.second)
+}
+*/
+
+// is_leap_year checks if a given a year is a leap year.
+pub fn is_leap_year(year int) bool {
+ return (year % 4 == 0) && (year % 100 != 0 || year % 400 == 0)
+}
+
+// days_in_month returns a number of days in a given month.
+pub fn days_in_month(month int, year int) ?int {
+ if month > 12 || month < 1 {
+ return error('Invalid month: $month')
+ }
+ extra := if month == 2 && is_leap_year(year) { 1 } else { 0 }
+ res := time.month_days[month - 1] + extra
+ return res
+}
+
+// str returns time in the same format as `parse` expects ("YYYY-MM-DD HH:MM:SS").
+pub fn (t Time) str() string {
+ // TODO Define common default format for
+ // `str` and `parse` and use it in both ways
+ return t.format_ss()
+}
+
+// convert_ctime converts a C time to V time.
+fn convert_ctime(t C.tm, microsecond int) Time {
+ return Time{
+ year: t.tm_year + 1900
+ month: t.tm_mon + 1
+ day: t.tm_mday
+ hour: t.tm_hour
+ minute: t.tm_min
+ second: t.tm_sec
+ microsecond: time.microsecond
+ unix: u64(make_unix_time(t))
+ }
+}
+
+// A lot of these are taken from the Go library.
+pub type Duration = i64
+
+pub const (
+ nanosecond = Duration(1)
+ microsecond = Duration(1000 * nanosecond)
+ millisecond = Duration(1000 * microsecond)
+ second = Duration(1000 * millisecond)
+ minute = Duration(60 * second)
+ hour = Duration(60 * minute)
+ infinite = Duration(C.INT64_MAX)
+)
+
+// nanoseconds returns the duration as an integer number of nanoseconds.
+pub fn (d Duration) nanoseconds() i64 {
+ return i64(d)
+}
+
+// microseconds returns the duration as an integer number of microseconds.
+pub fn (d Duration) microseconds() i64 {
+ return i64(d) / 1000
+}
+
+// milliseconds returns the duration as an integer number of milliseconds.
+pub fn (d Duration) milliseconds() i64 {
+ return i64(d) / 1000000
+}
+
+// The following functions return floating point numbers because it's common to
+// consider all of them in sub-one intervals
+// seconds returns the duration as a floating point number of seconds.
+pub fn (d Duration) seconds() f64 {
+ sec := d / time.second
+ nsec := d % time.second
+ return f64(sec) + f64(nsec) / 1e9
+}
+
+// minutes returns the duration as a floating point number of minutes.
+pub fn (d Duration) minutes() f64 {
+ min := d / time.minute
+ nsec := d % time.minute
+ return f64(min) + f64(nsec) / (60 * 1e9)
+}
+
+// hours returns the duration as a floating point number of hours.
+pub fn (d Duration) hours() f64 {
+ hr := d / time.hour
+ nsec := d % time.hour
+ return f64(hr) + f64(nsec) / (60 * 60 * 1e9)
+}
+
+// offset returns time zone UTC offset in seconds.
+pub fn offset() int {
+ t := now()
+ local := t.local()
+ return int(local.unix - t.unix)
+}