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Improve handling of unavailable timestamps.

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Previously if a timestamp was unavailable, it defaulted to the epoch.
Prior to this it defaulted to a zero duration.

Switch to an Option<SystemTime> and move the handling of unavailable
timestamps to rendering.
This commit is contained in:
Thomas Hurst 2020-05-19 02:31:15 +00:00
parent e54e1f53c8
commit acb7c49abf
3 changed files with 34 additions and 39 deletions
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45
src/fs/file.rs
View File

@ -325,37 +325,36 @@ impl<'dir> File<'dir> {
}
}
/// This file’s last modified timestamp.
/// If the file's time is invalid, assume it was modified at the epoch
pub fn modified_time(&self) -> SystemTime {
self.metadata.modified().unwrap_or(UNIX_EPOCH)
/// This file’s last modified timestamp, if available on this platform.
pub fn modified_time(&self) -> Option<SystemTime> {
self.metadata.modified().ok()
}
/// This file’s last changed timestamp.
pub fn changed_time(&self) -> SystemTime {
/// This file’s last changed timestamp, if available on this platform.
pub fn changed_time(&self) -> Option<SystemTime> {
let (mut sec, mut nsec) = (self.metadata.ctime(), self.metadata.ctime_nsec());
if sec < 0 { // yeah right
if nsec > 0 {
sec += 1;
nsec = nsec - 1_000_000_000;
}
UNIX_EPOCH - Duration::new(sec.abs() as u64, nsec.abs() as u32)
} else {
UNIX_EPOCH + Duration::new(sec as u64, nsec as u32)
}
Some(
if sec < 0 {
if nsec > 0 {
sec += 1;
nsec = nsec - 1_000_000_000;
}
UNIX_EPOCH - Duration::new(sec.abs() as u64, nsec.abs() as u32)
} else {
UNIX_EPOCH + Duration::new(sec as u64, nsec as u32)
}
)
}
/// This file’s last accessed timestamp.
/// If the file's time is invalid, assume it was accessed at the epoch
pub fn accessed_time(&self) -> SystemTime {
self.metadata.accessed().unwrap_or(UNIX_EPOCH)
/// This file’s last accessed timestamp, if available on this platform.
pub fn accessed_time(&self) -> Option<SystemTime> {
self.metadata.accessed().ok()
}
/// This file’s created timestamp.
/// If the file's time is invalid, assume it was created at the epoch
pub fn created_time(&self) -> SystemTime {
self.metadata.created().unwrap_or(UNIX_EPOCH)
/// This file’s created timestamp, if available on this platform.
pub fn created_time(&self) -> Option<SystemTime> {
self.metadata.created().ok()
}
/// This file’s ‘type’.

21
src/output/render/times.rs
View File

@ -11,18 +11,21 @@ pub trait Render {
format: &TimeFormat) -> TextCell;
}
impl Render for std::time::SystemTime {
impl Render for Option<std::time::SystemTime> {
fn render(self, style: Style,
tz: &Option<TimeZone>,
format: &TimeFormat) -> TextCell {
if let Some(ref tz) = *tz {
let datestamp = format.format_zoned(self, tz);
TextCell::paint(style, datestamp)
}
else {
let datestamp = format.format_local(self);
TextCell::paint(style, datestamp)
}
let datestamp = if let Some(time) = self {
if let Some(ref tz) = tz {
format.format_zoned(time, tz)
} else {
format.format_local(time)
}
} else {
String::from("-")
};
TextCell::paint(style, datestamp)
}
}

7
src/output/time.rs
View File

@ -147,9 +147,6 @@ impl DefaultFormat {
#[allow(trivial_numeric_casts)]
fn format_local(&self, time: SystemTime) -> String {
if time == UNIX_EPOCH {
return "-".to_string();
}
let date = LocalDateTime::at(systemtime_epoch(time));
if self.is_recent(date) {
@ -164,10 +161,6 @@ impl DefaultFormat {
#[allow(trivial_numeric_casts)]
fn format_zoned(&self, time: SystemTime, zone: &TimeZone) -> String {
if time == UNIX_EPOCH {
return "-".to_string();
}
let date = zone.to_zoned(LocalDateTime::at(systemtime_epoch(time)));
if self.is_recent(date) {