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Diffstat (limited to 'v_windows/v/old/vlib/time/time.v')
| -rw-r--r-- | v_windows/v/old/vlib/time/time.v | 431 |
1 files changed, 431 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/time/time.v b/v_windows/v/old/vlib/time/time.v new file mode 100644 index 0000000..14f0c7a --- /dev/null +++ b/v_windows/v/old/vlib/time/time.v @@ -0,0 +1,431 @@ +// 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) +} |