You've already forked parse_datetime
mirror of
https://github.com/uutils/parse_datetime.git
synced 2026-06-10 16:13:15 -07:00
refactor: introduce a builder and simplify the date time composition
This commit is contained in:
@@ -0,0 +1,303 @@
|
||||
// For the full copyright and license information, please view the LICENSE
|
||||
// file that was distributed with this source code.
|
||||
|
||||
use chrono::{DateTime, Datelike, FixedOffset, NaiveDate, TimeZone, Timelike};
|
||||
|
||||
use super::{date, relative, time, weekday};
|
||||
|
||||
/// The builder is used to construct a DateTime object from various components.
|
||||
/// The parser creates a `DateTimeBuilder` object with the parsed components,
|
||||
/// but without the baseline date and time. So you normally need to set the base
|
||||
/// date and time using the `set_base()` method before calling `build()`, or
|
||||
/// leave it unset to use the current date and time as the base.
|
||||
#[derive(Debug, Default)]
|
||||
pub struct DateTimeBuilder {
|
||||
base: Option<DateTime<FixedOffset>>,
|
||||
timestamp: Option<i32>,
|
||||
date: Option<date::Date>,
|
||||
time: Option<time::Time>,
|
||||
weekday: Option<weekday::Weekday>,
|
||||
timezone: Option<time::Offset>,
|
||||
relative: Vec<relative::Relative>,
|
||||
}
|
||||
|
||||
impl DateTimeBuilder {
|
||||
pub(super) fn new() -> Self {
|
||||
Self::default()
|
||||
}
|
||||
|
||||
/// Sets the base date and time for the builder. If not set, the current
|
||||
/// date and time will be used.
|
||||
pub(super) fn set_base(mut self, base: DateTime<FixedOffset>) -> Self {
|
||||
self.base = Some(base);
|
||||
self
|
||||
}
|
||||
|
||||
pub(super) fn set_timestamp(mut self, ts: i32) -> Result<Self, &'static str> {
|
||||
if self.timestamp.is_some() {
|
||||
Err("timestamp cannot appear more than once")
|
||||
} else {
|
||||
self.timestamp = Some(ts);
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn set_year(mut self, year: u32) -> Result<Self, &'static str> {
|
||||
if let Some(date) = self.date.as_mut() {
|
||||
if date.year.is_some() {
|
||||
Err("year cannot appear more than once")
|
||||
} else {
|
||||
date.year = Some(year);
|
||||
Ok(self)
|
||||
}
|
||||
} else {
|
||||
self.date = Some(date::Date {
|
||||
day: 1,
|
||||
month: 1,
|
||||
year: Some(year),
|
||||
});
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn set_date(mut self, date: date::Date) -> Result<Self, &'static str> {
|
||||
if self.date.is_some() || self.timestamp.is_some() {
|
||||
Err("date cannot appear more than once")
|
||||
} else {
|
||||
self.date = Some(date);
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn set_time(mut self, time: time::Time) -> Result<Self, &'static str> {
|
||||
if self.time.is_some() || self.timestamp.is_some() {
|
||||
Err("time cannot appear more than once")
|
||||
} else if self.timezone.is_some() && time.offset.is_some() {
|
||||
Err("time offset and timezone are mutually exclusive")
|
||||
} else {
|
||||
self.time = Some(time);
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn set_weekday(mut self, weekday: weekday::Weekday) -> Result<Self, &'static str> {
|
||||
if self.weekday.is_some() {
|
||||
Err("weekday cannot appear more than once")
|
||||
} else {
|
||||
self.weekday = Some(weekday);
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn set_timezone(mut self, timezone: time::Offset) -> Result<Self, &'static str> {
|
||||
if self.timezone.is_some() {
|
||||
Err("timezone cannot appear more than once")
|
||||
} else if self.time.as_ref().and_then(|t| t.offset.as_ref()).is_some() {
|
||||
Err("time offset and timezone are mutually exclusive")
|
||||
} else {
|
||||
self.timezone = Some(timezone);
|
||||
Ok(self)
|
||||
}
|
||||
}
|
||||
|
||||
pub(super) fn push_relative(mut self, relative: relative::Relative) -> Self {
|
||||
self.relative.push(relative);
|
||||
self
|
||||
}
|
||||
|
||||
pub(super) fn build(self) -> Option<DateTime<FixedOffset>> {
|
||||
let base = self.base.unwrap_or_else(|| chrono::Local::now().into());
|
||||
let mut dt = new_date(
|
||||
base.year(),
|
||||
base.month(),
|
||||
base.day(),
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
0,
|
||||
*base.offset(),
|
||||
)?;
|
||||
|
||||
if let Some(ts) = self.timestamp {
|
||||
dt = chrono::Utc
|
||||
.timestamp_opt(ts.into(), 0)
|
||||
.unwrap()
|
||||
.with_timezone(&dt.timezone());
|
||||
}
|
||||
|
||||
if let Some(date::Date { year, month, day }) = self.date {
|
||||
dt = new_date(
|
||||
year.map(|x| x as i32).unwrap_or(dt.year()),
|
||||
month,
|
||||
day,
|
||||
dt.hour(),
|
||||
dt.minute(),
|
||||
dt.second(),
|
||||
dt.nanosecond(),
|
||||
*dt.offset(),
|
||||
)?;
|
||||
}
|
||||
|
||||
if let Some(time::Time {
|
||||
hour,
|
||||
minute,
|
||||
second,
|
||||
ref offset,
|
||||
}) = self.time
|
||||
{
|
||||
let offset = offset
|
||||
.clone()
|
||||
.and_then(|o| chrono::FixedOffset::try_from(o).ok())
|
||||
.unwrap_or(*dt.offset());
|
||||
|
||||
dt = new_date(
|
||||
dt.year(),
|
||||
dt.month(),
|
||||
dt.day(),
|
||||
hour,
|
||||
minute,
|
||||
second as u32,
|
||||
(second.fract() * 10f64.powi(9)).round() as u32,
|
||||
offset,
|
||||
)?;
|
||||
}
|
||||
|
||||
if let Some(weekday::Weekday { offset, day }) = self.weekday {
|
||||
if self.time.is_none() {
|
||||
dt = new_date(dt.year(), dt.month(), dt.day(), 0, 0, 0, 0, *dt.offset())?;
|
||||
}
|
||||
|
||||
let mut offset = offset;
|
||||
let day = day.into();
|
||||
|
||||
// If the current day is not the target day, we need to adjust
|
||||
// the x value to ensure we find the correct day.
|
||||
//
|
||||
// Consider this:
|
||||
// Assuming today is Monday, next Friday is actually THIS Friday;
|
||||
// but next Monday is indeed NEXT Monday.
|
||||
if dt.weekday() != day && offset > 0 {
|
||||
offset -= 1;
|
||||
}
|
||||
|
||||
// Calculate the delta to the target day.
|
||||
//
|
||||
// Assuming today is Thursday, here are some examples:
|
||||
//
|
||||
// Example 1: last Thursday (x = -1, day = Thursday)
|
||||
// delta = (3 - 3) % 7 + (-1) * 7 = -7
|
||||
//
|
||||
// Example 2: last Monday (x = -1, day = Monday)
|
||||
// delta = (0 - 3) % 7 + (-1) * 7 = -3
|
||||
//
|
||||
// Example 3: next Monday (x = 1, day = Monday)
|
||||
// delta = (0 - 3) % 7 + (0) * 7 = 4
|
||||
// (Note that we have adjusted the x value above)
|
||||
//
|
||||
// Example 4: next Thursday (x = 1, day = Thursday)
|
||||
// delta = (3 - 3) % 7 + (1) * 7 = 7
|
||||
let delta = (day.num_days_from_monday() as i32
|
||||
- dt.weekday().num_days_from_monday() as i32)
|
||||
.rem_euclid(7)
|
||||
+ offset.checked_mul(7)?;
|
||||
|
||||
dt = if delta < 0 {
|
||||
dt.checked_sub_days(chrono::Days::new((-delta) as u64))?
|
||||
} else {
|
||||
dt.checked_add_days(chrono::Days::new(delta as u64))?
|
||||
}
|
||||
}
|
||||
|
||||
for rel in self.relative {
|
||||
if self.timestamp.is_none()
|
||||
&& self.date.is_none()
|
||||
&& self.time.is_none()
|
||||
&& self.weekday.is_none()
|
||||
{
|
||||
dt = base;
|
||||
}
|
||||
|
||||
match rel {
|
||||
relative::Relative::Years(x) => {
|
||||
dt = dt.with_year(dt.year() + x)?;
|
||||
}
|
||||
relative::Relative::Months(x) => {
|
||||
// *NOTE* This is done in this way to conform to
|
||||
// GNU behavior.
|
||||
let days = last_day_of_month(dt.year(), dt.month());
|
||||
if x >= 0 {
|
||||
dt += dt
|
||||
.date_naive()
|
||||
.checked_add_days(chrono::Days::new((days * x as u32) as u64))?
|
||||
.signed_duration_since(dt.date_naive());
|
||||
} else {
|
||||
dt += dt
|
||||
.date_naive()
|
||||
.checked_sub_days(chrono::Days::new((days * -x as u32) as u64))?
|
||||
.signed_duration_since(dt.date_naive());
|
||||
}
|
||||
}
|
||||
relative::Relative::Days(x) => dt += chrono::Duration::days(x.into()),
|
||||
relative::Relative::Hours(x) => dt += chrono::Duration::hours(x.into()),
|
||||
relative::Relative::Minutes(x) => {
|
||||
dt += chrono::Duration::try_minutes(x.into())?;
|
||||
}
|
||||
// Seconds are special because they can be given as a float
|
||||
relative::Relative::Seconds(x) => {
|
||||
dt += chrono::Duration::try_seconds(x as i64)?;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if let Some(offset) = self.timezone {
|
||||
dt = with_timezone_restore(offset, dt)?;
|
||||
}
|
||||
|
||||
Some(dt)
|
||||
}
|
||||
}
|
||||
|
||||
#[allow(clippy::too_many_arguments)]
|
||||
fn new_date(
|
||||
year: i32,
|
||||
month: u32,
|
||||
day: u32,
|
||||
hour: u32,
|
||||
minute: u32,
|
||||
second: u32,
|
||||
nano: u32,
|
||||
offset: FixedOffset,
|
||||
) -> Option<DateTime<FixedOffset>> {
|
||||
let newdate = NaiveDate::from_ymd_opt(year, month, day)
|
||||
.and_then(|naive| naive.and_hms_nano_opt(hour, minute, second, nano))?;
|
||||
|
||||
Some(DateTime::<FixedOffset>::from_local(newdate, offset))
|
||||
}
|
||||
|
||||
/// Restores year, month, day, etc after applying the timezone
|
||||
/// returns None if timezone overflows the date
|
||||
fn with_timezone_restore(
|
||||
offset: time::Offset,
|
||||
at: DateTime<FixedOffset>,
|
||||
) -> Option<DateTime<FixedOffset>> {
|
||||
let offset: FixedOffset = chrono::FixedOffset::try_from(offset).ok()?;
|
||||
let copy = at;
|
||||
let x = at
|
||||
.with_timezone(&offset)
|
||||
.with_day(copy.day())?
|
||||
.with_month(copy.month())?
|
||||
.with_year(copy.year())?
|
||||
.with_hour(copy.hour())?
|
||||
.with_minute(copy.minute())?
|
||||
.with_second(copy.second())?
|
||||
.with_nanosecond(copy.nanosecond())?;
|
||||
Some(x)
|
||||
}
|
||||
|
||||
fn last_day_of_month(year: i32, month: u32) -> u32 {
|
||||
NaiveDate::from_ymd_opt(year, month + 1, 1)
|
||||
.unwrap_or(NaiveDate::from_ymd_opt(year + 1, 1, 1).unwrap())
|
||||
.pred_opt()
|
||||
.unwrap()
|
||||
.day()
|
||||
}
|
||||
+68
-325
@@ -20,24 +20,29 @@
|
||||
//! We put all of those in separate modules:
|
||||
//! - [`date`]
|
||||
//! - [`time`]
|
||||
//! - [`time_zone`]
|
||||
//! - [`timezone`]
|
||||
//! - [`combined`]
|
||||
//! - [`weekday`]
|
||||
//! - [`relative`]
|
||||
//! - [`number]
|
||||
|
||||
#![allow(deprecated)]
|
||||
|
||||
// date and time items
|
||||
mod combined;
|
||||
mod date;
|
||||
mod epoch;
|
||||
mod ordinal;
|
||||
mod primitive;
|
||||
mod relative;
|
||||
mod time;
|
||||
mod timezone;
|
||||
mod weekday;
|
||||
|
||||
use chrono::{DateTime, Datelike, FixedOffset, NaiveDate, TimeZone, Timelike};
|
||||
// utility modules
|
||||
mod builder;
|
||||
mod ordinal;
|
||||
mod primitive;
|
||||
|
||||
use builder::DateTimeBuilder;
|
||||
use chrono::{DateTime, FixedOffset};
|
||||
use primitive::space;
|
||||
use winnow::{
|
||||
combinator::{alt, trace},
|
||||
@@ -60,7 +65,9 @@ pub enum Item {
|
||||
TimeZone(time::Offset),
|
||||
}
|
||||
|
||||
// Parse an item
|
||||
/// Parse an item.
|
||||
/// TODO: timestamp values are exclusive with other items. See
|
||||
/// https://github.com/uutils/parse_datetime/issues/156
|
||||
pub fn parse_one(input: &mut &str) -> ModalResult<Item> {
|
||||
trace(
|
||||
"parse_one",
|
||||
@@ -86,77 +93,47 @@ fn expect_error(input: &mut &str, reason: &'static str) -> ErrMode<ContextError>
|
||||
)
|
||||
}
|
||||
|
||||
pub fn parse(input: &mut &str) -> ModalResult<Vec<Item>> {
|
||||
let mut items = Vec::new();
|
||||
let mut date_seen = false;
|
||||
let mut time_seen = false;
|
||||
let mut year_seen = false;
|
||||
let mut tz_seen = false;
|
||||
pub fn parse(input: &mut &str) -> ModalResult<DateTimeBuilder> {
|
||||
let mut builder = DateTimeBuilder::new();
|
||||
|
||||
loop {
|
||||
match parse_one.parse_next(input) {
|
||||
Ok(item) => {
|
||||
match item {
|
||||
Item::DateTime(ref dt) => {
|
||||
if date_seen || time_seen {
|
||||
return Err(expect_error(
|
||||
input,
|
||||
"date or time cannot appear more than once",
|
||||
));
|
||||
}
|
||||
|
||||
date_seen = true;
|
||||
time_seen = true;
|
||||
if dt.date.year.is_some() {
|
||||
year_seen = true;
|
||||
}
|
||||
}
|
||||
Item::Date(ref d) => {
|
||||
if date_seen {
|
||||
return Err(expect_error(input, "date cannot appear more than once"));
|
||||
}
|
||||
|
||||
date_seen = true;
|
||||
if d.year.is_some() {
|
||||
year_seen = true;
|
||||
}
|
||||
}
|
||||
Item::Time(ref t) => {
|
||||
if time_seen {
|
||||
return Err(expect_error(input, "time cannot appear more than once"));
|
||||
}
|
||||
|
||||
if t.offset.is_some() {
|
||||
if tz_seen {
|
||||
return Err(expect_error(
|
||||
input,
|
||||
"timezone cannot appear more than once",
|
||||
));
|
||||
}
|
||||
tz_seen = true;
|
||||
}
|
||||
|
||||
time_seen = true;
|
||||
}
|
||||
Item::Year(_) => {
|
||||
if year_seen {
|
||||
return Err(expect_error(input, "year cannot appear more than once"));
|
||||
}
|
||||
year_seen = true;
|
||||
}
|
||||
Item::TimeZone(_) => {
|
||||
if tz_seen {
|
||||
return Err(expect_error(
|
||||
input,
|
||||
"timezone cannot appear more than once",
|
||||
));
|
||||
}
|
||||
tz_seen = true;
|
||||
}
|
||||
_ => {}
|
||||
Ok(item) => match item {
|
||||
Item::Timestamp(ts) => {
|
||||
builder = builder
|
||||
.set_timestamp(ts)
|
||||
.map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
items.push(item);
|
||||
}
|
||||
Item::Year(year) => {
|
||||
builder = builder.set_year(year).map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::DateTime(dt) => {
|
||||
builder = builder
|
||||
.set_date(dt.date)
|
||||
.map_err(|e| expect_error(input, e))?
|
||||
.set_time(dt.time)
|
||||
.map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::Date(d) => {
|
||||
builder = builder.set_date(d).map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::Time(t) => {
|
||||
builder = builder.set_time(t).map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::Weekday(weekday) => {
|
||||
builder = builder
|
||||
.set_weekday(weekday)
|
||||
.map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::TimeZone(tz) => {
|
||||
builder = builder
|
||||
.set_timezone(tz)
|
||||
.map_err(|e| expect_error(input, e))?;
|
||||
}
|
||||
Item::Relative(rel) => {
|
||||
builder = builder.push_relative(rel);
|
||||
}
|
||||
},
|
||||
Err(ErrMode::Backtrack(_)) => break,
|
||||
Err(e) => return Err(e),
|
||||
}
|
||||
@@ -167,256 +144,34 @@ pub fn parse(input: &mut &str) -> ModalResult<Vec<Item>> {
|
||||
return Err(expect_error(input, "unexpected input"));
|
||||
}
|
||||
|
||||
Ok(items)
|
||||
}
|
||||
|
||||
#[allow(clippy::too_many_arguments)]
|
||||
fn new_date(
|
||||
year: i32,
|
||||
month: u32,
|
||||
day: u32,
|
||||
hour: u32,
|
||||
minute: u32,
|
||||
second: u32,
|
||||
nano: u32,
|
||||
offset: FixedOffset,
|
||||
) -> Option<DateTime<FixedOffset>> {
|
||||
let newdate = NaiveDate::from_ymd_opt(year, month, day)
|
||||
.and_then(|naive| naive.and_hms_nano_opt(hour, minute, second, nano))?;
|
||||
|
||||
Some(DateTime::<FixedOffset>::from_local(newdate, offset))
|
||||
}
|
||||
|
||||
/// Restores year, month, day, etc after applying the timezone
|
||||
/// returns None if timezone overflows the date
|
||||
fn with_timezone_restore(
|
||||
offset: time::Offset,
|
||||
at: DateTime<FixedOffset>,
|
||||
) -> Option<DateTime<FixedOffset>> {
|
||||
let offset: FixedOffset = chrono::FixedOffset::try_from(offset).ok()?;
|
||||
let copy = at;
|
||||
let x = at
|
||||
.with_timezone(&offset)
|
||||
.with_day(copy.day())?
|
||||
.with_month(copy.month())?
|
||||
.with_year(copy.year())?
|
||||
.with_hour(copy.hour())?
|
||||
.with_minute(copy.minute())?
|
||||
.with_second(copy.second())?
|
||||
.with_nanosecond(copy.nanosecond())?;
|
||||
Some(x)
|
||||
}
|
||||
|
||||
fn last_day_of_month(year: i32, month: u32) -> u32 {
|
||||
NaiveDate::from_ymd_opt(year, month + 1, 1)
|
||||
.unwrap_or(NaiveDate::from_ymd_opt(year + 1, 1, 1).unwrap())
|
||||
.pred_opt()
|
||||
.unwrap()
|
||||
.day()
|
||||
}
|
||||
|
||||
fn at_date_inner(date: Vec<Item>, at: DateTime<FixedOffset>) -> Option<DateTime<FixedOffset>> {
|
||||
let mut d = at
|
||||
.with_hour(0)
|
||||
.unwrap()
|
||||
.with_minute(0)
|
||||
.unwrap()
|
||||
.with_second(0)
|
||||
.unwrap()
|
||||
.with_nanosecond(0)
|
||||
.unwrap();
|
||||
|
||||
// This flag is used by relative items to determine which date/time to use.
|
||||
// If any date/time item is set, it will use that; otherwise, it will use
|
||||
// the `at` value.
|
||||
let date_time_set = date.iter().any(|item| {
|
||||
matches!(
|
||||
item,
|
||||
Item::Timestamp(_)
|
||||
| Item::Date(_)
|
||||
| Item::DateTime(_)
|
||||
| Item::Year(_)
|
||||
| Item::Time(_)
|
||||
| Item::Weekday(_)
|
||||
)
|
||||
});
|
||||
|
||||
for item in date {
|
||||
match item {
|
||||
Item::Timestamp(ts) => {
|
||||
d = chrono::Utc
|
||||
.timestamp_opt(ts.into(), 0)
|
||||
.unwrap()
|
||||
.with_timezone(&d.timezone())
|
||||
}
|
||||
Item::Date(date::Date { day, month, year }) => {
|
||||
d = new_date(
|
||||
year.map(|x| x as i32).unwrap_or(d.year()),
|
||||
month,
|
||||
day,
|
||||
d.hour(),
|
||||
d.minute(),
|
||||
d.second(),
|
||||
d.nanosecond(),
|
||||
*d.offset(),
|
||||
)?;
|
||||
}
|
||||
Item::DateTime(combined::DateTime {
|
||||
date: date::Date { day, month, year },
|
||||
time:
|
||||
time::Time {
|
||||
hour,
|
||||
minute,
|
||||
second,
|
||||
offset,
|
||||
},
|
||||
..
|
||||
}) => {
|
||||
let offset = offset
|
||||
.and_then(|o| chrono::FixedOffset::try_from(o).ok())
|
||||
.unwrap_or(*d.offset());
|
||||
|
||||
d = new_date(
|
||||
year.map(|x| x as i32).unwrap_or(d.year()),
|
||||
month,
|
||||
day,
|
||||
hour,
|
||||
minute,
|
||||
second as u32,
|
||||
(second.fract() * 10f64.powi(9)).round() as u32,
|
||||
offset,
|
||||
)?;
|
||||
}
|
||||
Item::Year(year) => d = d.with_year(year as i32).unwrap_or(d),
|
||||
Item::Time(time::Time {
|
||||
hour,
|
||||
minute,
|
||||
second,
|
||||
offset,
|
||||
}) => {
|
||||
let offset = offset
|
||||
.and_then(|o| chrono::FixedOffset::try_from(o).ok())
|
||||
.unwrap_or(*d.offset());
|
||||
|
||||
d = new_date(
|
||||
d.year(),
|
||||
d.month(),
|
||||
d.day(),
|
||||
hour,
|
||||
minute,
|
||||
second as u32,
|
||||
(second.fract() * 10f64.powi(9)).round() as u32,
|
||||
offset,
|
||||
)?;
|
||||
}
|
||||
Item::Weekday(weekday::Weekday { offset: x, day }) => {
|
||||
let mut x = x;
|
||||
let day = day.into();
|
||||
|
||||
// If the current day is not the target day, we need to adjust
|
||||
// the x value to ensure we find the correct day.
|
||||
//
|
||||
// Consider this:
|
||||
// Assuming today is Monday, next Friday is actually THIS Friday;
|
||||
// but next Monday is indeed NEXT Monday.
|
||||
if d.weekday() != day && x > 0 {
|
||||
x -= 1;
|
||||
}
|
||||
|
||||
// Calculate the delta to the target day.
|
||||
//
|
||||
// Assuming today is Thursday, here are some examples:
|
||||
//
|
||||
// Example 1: last Thursday (x = -1, day = Thursday)
|
||||
// delta = (3 - 3) % 7 + (-1) * 7 = -7
|
||||
//
|
||||
// Example 2: last Monday (x = -1, day = Monday)
|
||||
// delta = (0 - 3) % 7 + (-1) * 7 = -3
|
||||
//
|
||||
// Example 3: next Monday (x = 1, day = Monday)
|
||||
// delta = (0 - 3) % 7 + (0) * 7 = 4
|
||||
// (Note that we have adjusted the x value above)
|
||||
//
|
||||
// Example 4: next Thursday (x = 1, day = Thursday)
|
||||
// delta = (3 - 3) % 7 + (1) * 7 = 7
|
||||
let delta = (day.num_days_from_monday() as i32
|
||||
- d.weekday().num_days_from_monday() as i32)
|
||||
.rem_euclid(7)
|
||||
+ x.checked_mul(7)?;
|
||||
|
||||
d = if delta < 0 {
|
||||
d.checked_sub_days(chrono::Days::new((-delta) as u64))?
|
||||
} else {
|
||||
d.checked_add_days(chrono::Days::new(delta as u64))?
|
||||
}
|
||||
}
|
||||
Item::Relative(rel) => {
|
||||
// If date and/or time is set, use the set value; otherwise, use
|
||||
// the reference value.
|
||||
if !date_time_set {
|
||||
d = at;
|
||||
}
|
||||
|
||||
match rel {
|
||||
relative::Relative::Years(x) => {
|
||||
d = d.with_year(d.year() + x)?;
|
||||
}
|
||||
relative::Relative::Months(x) => {
|
||||
// *NOTE* This is done in this way to conform to
|
||||
// GNU behavior.
|
||||
let days = last_day_of_month(d.year(), d.month());
|
||||
if x >= 0 {
|
||||
d += d
|
||||
.date_naive()
|
||||
.checked_add_days(chrono::Days::new((days * x as u32) as u64))?
|
||||
.signed_duration_since(d.date_naive());
|
||||
} else {
|
||||
d += d
|
||||
.date_naive()
|
||||
.checked_sub_days(chrono::Days::new((days * -x as u32) as u64))?
|
||||
.signed_duration_since(d.date_naive());
|
||||
}
|
||||
}
|
||||
relative::Relative::Days(x) => d += chrono::Duration::days(x.into()),
|
||||
relative::Relative::Hours(x) => d += chrono::Duration::hours(x.into()),
|
||||
relative::Relative::Minutes(x) => {
|
||||
d += chrono::Duration::try_minutes(x.into())?;
|
||||
}
|
||||
// Seconds are special because they can be given as a float
|
||||
relative::Relative::Seconds(x) => {
|
||||
d += chrono::Duration::try_seconds(x as i64)?;
|
||||
}
|
||||
}
|
||||
}
|
||||
Item::TimeZone(offset) => {
|
||||
d = with_timezone_restore(offset, d)?;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Some(d)
|
||||
Ok(builder)
|
||||
}
|
||||
|
||||
pub(crate) fn at_date(
|
||||
date: Vec<Item>,
|
||||
at: DateTime<FixedOffset>,
|
||||
builder: DateTimeBuilder,
|
||||
base: DateTime<FixedOffset>,
|
||||
) -> Result<DateTime<FixedOffset>, ParseDateTimeError> {
|
||||
at_date_inner(date, at).ok_or(ParseDateTimeError::InvalidInput)
|
||||
builder
|
||||
.set_base(base)
|
||||
.build()
|
||||
.ok_or(ParseDateTimeError::InvalidInput)
|
||||
}
|
||||
|
||||
pub(crate) fn at_local(date: Vec<Item>) -> Result<DateTime<FixedOffset>, ParseDateTimeError> {
|
||||
at_date(date, chrono::Local::now().into())
|
||||
pub(crate) fn at_local(
|
||||
builder: DateTimeBuilder,
|
||||
) -> Result<DateTime<FixedOffset>, ParseDateTimeError> {
|
||||
builder.build().ok_or(ParseDateTimeError::InvalidInput)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::{at_date, date::Date, parse, time::Time, Item};
|
||||
use super::{at_date, parse, DateTimeBuilder};
|
||||
use chrono::{
|
||||
DateTime, FixedOffset, NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Timelike, Utc,
|
||||
};
|
||||
|
||||
fn at_utc(date: Vec<Item>) -> DateTime<FixedOffset> {
|
||||
at_date(date, Utc::now().fixed_offset()).unwrap()
|
||||
fn at_utc(builder: DateTimeBuilder) -> DateTime<FixedOffset> {
|
||||
at_date(builder, Utc::now().fixed_offset()).unwrap()
|
||||
}
|
||||
|
||||
fn test_eq_fmt(fmt: &str, input: &str) -> String {
|
||||
@@ -432,20 +187,8 @@ mod tests {
|
||||
#[test]
|
||||
fn date_and_time() {
|
||||
assert_eq!(
|
||||
parse(&mut " 10:10 2022-12-12 "),
|
||||
Ok(vec![
|
||||
Item::Time(Time {
|
||||
hour: 10,
|
||||
minute: 10,
|
||||
second: 0.0,
|
||||
offset: None,
|
||||
}),
|
||||
Item::Date(Date {
|
||||
day: 12,
|
||||
month: 12,
|
||||
year: Some(2022)
|
||||
})
|
||||
])
|
||||
"2022-12-12",
|
||||
test_eq_fmt("%Y-%m-%d", " 10:10 2022-12-12 ")
|
||||
);
|
||||
|
||||
// format, expected output, input
|
||||
@@ -504,7 +247,7 @@ mod tests {
|
||||
assert!(result
|
||||
.unwrap_err()
|
||||
.to_string()
|
||||
.contains("date or time cannot appear more than once"));
|
||||
.contains("date cannot appear more than once"));
|
||||
|
||||
let result = parse(&mut "2025-05-19 2024-05-20");
|
||||
assert!(result.is_err());
|
||||
@@ -539,7 +282,7 @@ mod tests {
|
||||
assert!(result
|
||||
.unwrap_err()
|
||||
.to_string()
|
||||
.contains("timezone cannot appear more than once"));
|
||||
.contains("time offset and timezone are mutually exclusive"));
|
||||
|
||||
let result = parse(&mut "2025-05-19 abcdef");
|
||||
assert!(result.is_err());
|
||||
|
||||
@@ -29,7 +29,7 @@ use winnow::{
|
||||
|
||||
use super::{ordinal::ordinal, primitive::s};
|
||||
|
||||
#[derive(PartialEq, Eq, Debug)]
|
||||
#[derive(PartialEq, Eq, Debug, Copy, Clone)]
|
||||
pub(crate) enum Day {
|
||||
Monday,
|
||||
Tuesday,
|
||||
|
||||
Reference in New Issue
Block a user