Struct DateTime

pub struct DateTime { /* private fields */ }

Representation of a moment in time.

Zip files use an old format from DOS to store timestamps, with its own set of peculiarities. For example, it has a resolution of 2 seconds!

A DateTime can be stored directly in a zipfile with FileOptions::last_modified_time, or read from one with ZipFile::last_modified.

Warning

Because there is no timezone associated with the DateTime, they should ideally only be used for user-facing descriptions.

Modern zip files store more precise timestamps; see crate::extra_fields::ExtendedTimestamp for details.

Implementations

impl DateTime

pub fn default_for_write() -> Self

Returns the current time if possible, otherwise the default of 1980-01-01.

impl DateTime

pub const unsafe fn from_msdos_unchecked( datepart: u16, timepart: u16, ) -> DateTime

Converts an msdos (u16, u16) pair to a DateTime object

Safety

The caller must ensure the date and time are valid.

pub fn try_from_msdos( datepart: u16, timepart: u16, ) -> Result<DateTime, DateTimeRangeError>

Converts an msdos (u16, u16) pair to a DateTime object if it represents a valid date and time.

pub fn from_date_and_time( year: u16, month: u8, day: u8, hour: u8, minute: u8, second: u8, ) -> Result<DateTime, DateTimeRangeError>

Constructs a DateTime from a specific date and time

The bounds are:

• year: [1980, 2107]
• month: [1, 12]
• day: [1, 28..=31]
• hour: [0, 23]
• minute: [0, 59]
• second: [0, 58]

pub fn is_valid(&self) -> bool

Indicates whether this date and time can be written to a zip archive.

pub const fn timepart(&self) -> u16

Gets the time portion of this datetime in the msdos representation

pub const fn datepart(&self) -> u16

Gets the date portion of this datetime in the msdos representation

pub const fn year(&self) -> u16

Get the year. There is no epoch, i.e. 2018 will be returned as 2018.

pub const fn month(&self) -> u8

Get the month, where 1 = january and 12 = december

Warning

When read from a zip file, this may not be a reasonable value

pub const fn day(&self) -> u8

Get the day

Warning

When read from a zip file, this may not be a reasonable value

pub const fn hour(&self) -> u8

Get the hour

Warning

When read from a zip file, this may not be a reasonable value

pub const fn minute(&self) -> u8

Get the minute

Warning

When read from a zip file, this may not be a reasonable value

pub const fn second(&self) -> u8

Get the second

Warning

When read from a zip file, this may not be a reasonable value

Trait Implementations

impl Clone for DateTime

fn clone(&self) -> DateTime

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DateTime

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DateTime

fn default() -> DateTime

Constructs an ‘default’ datetime of 1980-01-01 00:00:00

impl Display for DateTime

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<DateTime> for (u16, u16)

fn from(dt: DateTime) -> Self

Converts to this type from the input type.

impl Hash for DateTime

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DateTime

fn cmp(&self, other: &DateTime) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DateTime

fn eq(&self, other: &DateTime) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for DateTime

fn partial_cmp(&self, other: &DateTime) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<(u16, u16)> for DateTime

type Error = DateTimeRangeError

The type returned in the event of a conversion error.

fn try_from(values: (u16, u16)) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for DateTime

impl Eq for DateTime

impl StructuralPartialEq for DateTime