709 lines
25 KiB
Rust
709 lines
25 KiB
Rust
//! Timestamps for files in Rust
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//!
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//! This library provides platform-agnostic inspection of the various timestamps
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//! present in the standard `fs::Metadata` structure.
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//!
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//! # Installation
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//!
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//! Add this to your `Cargo.toml`:
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//!
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//! ```toml
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//! [dependencies]
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//! filetime = "0.2"
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//! ```
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//!
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//! # Usage
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//!
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//! ```no_run
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//! use std::fs;
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//! use filetime::FileTime;
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//!
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//! let metadata = fs::metadata("foo.txt").unwrap();
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//!
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//! let mtime = FileTime::from_last_modification_time(&metadata);
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//! println!("{}", mtime);
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//!
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//! let atime = FileTime::from_last_access_time(&metadata);
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//! assert!(mtime < atime);
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//!
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//! // Inspect values that can be interpreted across platforms
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//! println!("{}", mtime.unix_seconds());
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//! println!("{}", mtime.nanoseconds());
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//!
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//! // Print the platform-specific value of seconds
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//! println!("{}", mtime.seconds());
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//! ```
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use std::fmt;
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use std::fs;
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use std::io;
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use std::path::Path;
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use std::time::{Duration, SystemTime, UNIX_EPOCH};
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cfg_if::cfg_if! {
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if #[cfg(target_os = "redox")] {
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#[path = "redox.rs"]
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mod imp;
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} else if #[cfg(windows)] {
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#[path = "windows.rs"]
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mod imp;
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} else if #[cfg(target_family = "wasm")] {
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#[path = "wasm.rs"]
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mod imp;
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} else {
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#[path = "unix/mod.rs"]
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mod imp;
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}
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}
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/// A helper structure to represent a timestamp for a file.
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///
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/// The actual value contined within is platform-specific and does not have the
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/// same meaning across platforms, but comparisons and stringification can be
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/// significant among the same platform.
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#[derive(Eq, PartialEq, Ord, PartialOrd, Debug, Copy, Clone, Hash)]
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pub struct FileTime {
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seconds: i64,
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nanos: u32,
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}
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impl FileTime {
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/// Creates a new timestamp representing a 0 time.
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///
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/// Useful for creating the base of a cmp::max chain of times.
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pub const fn zero() -> FileTime {
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FileTime {
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seconds: 0,
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nanos: 0,
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}
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}
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const fn emulate_second_only_system(self) -> FileTime {
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if cfg!(emulate_second_only_system) {
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FileTime {
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seconds: self.seconds,
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nanos: 0,
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}
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} else {
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self
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}
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}
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/// Creates a new timestamp representing the current system time.
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///
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/// ```
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/// # use filetime::FileTime;
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/// #
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/// # fn example() -> std::io::Result<()> {
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/// # let path = "";
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/// #
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/// filetime::set_file_mtime(path, FileTime::now())?;
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/// #
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/// # Ok(())
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/// # }
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/// ```
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///
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/// Equivalent to `FileTime::from_system_time(SystemTime::now())`.
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pub fn now() -> FileTime {
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FileTime::from_system_time(SystemTime::now())
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}
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/// Creates a new instance of `FileTime` with a number of seconds and
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/// nanoseconds relative to the Unix epoch, 1970-01-01T00:00:00Z.
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///
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/// Negative seconds represent times before the Unix epoch, and positive
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/// values represent times after it. Nanos always count forwards in time.
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///
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/// Note that this is typically the relative point that Unix time stamps are
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/// from, but on Windows the native time stamp is relative to January 1,
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/// 1601 so the return value of `seconds` from the returned `FileTime`
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/// instance may not be the same as that passed in.
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pub const fn from_unix_time(seconds: i64, nanos: u32) -> FileTime {
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FileTime {
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seconds: seconds + if cfg!(windows) { 11644473600 } else { 0 },
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nanos,
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}
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.emulate_second_only_system()
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}
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/// Creates a new timestamp from the last modification time listed in the
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/// specified metadata.
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///
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/// The returned value corresponds to the `mtime` field of `stat` on Unix
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/// platforms and the `ftLastWriteTime` field on Windows platforms.
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pub fn from_last_modification_time(meta: &fs::Metadata) -> FileTime {
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imp::from_last_modification_time(meta).emulate_second_only_system()
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}
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/// Creates a new timestamp from the last access time listed in the
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/// specified metadata.
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///
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/// The returned value corresponds to the `atime` field of `stat` on Unix
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/// platforms and the `ftLastAccessTime` field on Windows platforms.
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pub fn from_last_access_time(meta: &fs::Metadata) -> FileTime {
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imp::from_last_access_time(meta).emulate_second_only_system()
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}
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/// Creates a new timestamp from the creation time listed in the specified
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/// metadata.
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///
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/// The returned value corresponds to the `birthtime` field of `stat` on
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/// Unix platforms and the `ftCreationTime` field on Windows platforms. Note
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/// that not all Unix platforms have this field available and may return
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/// `None` in some circumstances.
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pub fn from_creation_time(meta: &fs::Metadata) -> Option<FileTime> {
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imp::from_creation_time(meta).map(|x| x.emulate_second_only_system())
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}
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/// Creates a new timestamp from the given SystemTime.
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///
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/// Windows counts file times since 1601-01-01T00:00:00Z, and cannot
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/// represent times before this, but it's possible to create a SystemTime
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/// that does. This function will error if passed such a SystemTime.
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pub fn from_system_time(time: SystemTime) -> FileTime {
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let epoch = if cfg!(windows) {
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UNIX_EPOCH - Duration::from_secs(11644473600)
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} else {
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UNIX_EPOCH
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};
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time.duration_since(epoch)
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.map(|d| FileTime {
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seconds: d.as_secs() as i64,
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nanos: d.subsec_nanos(),
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})
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.unwrap_or_else(|e| {
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let until_epoch = e.duration();
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let (sec_offset, nanos) = if until_epoch.subsec_nanos() == 0 {
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(0, 0)
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} else {
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(-1, 1_000_000_000 - until_epoch.subsec_nanos())
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};
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FileTime {
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seconds: -1 * until_epoch.as_secs() as i64 + sec_offset,
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nanos,
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}
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})
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.emulate_second_only_system()
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}
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/// Returns the whole number of seconds represented by this timestamp.
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///
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/// Note that this value's meaning is **platform specific**. On Unix
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/// platform time stamps are typically relative to January 1, 1970, but on
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/// Windows platforms time stamps are relative to January 1, 1601.
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pub const fn seconds(&self) -> i64 {
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self.seconds
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}
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/// Returns the whole number of seconds represented by this timestamp,
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/// relative to the Unix epoch start of January 1, 1970.
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///
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/// Note that this does not return the same value as `seconds` for Windows
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/// platforms as seconds are relative to a different date there.
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pub const fn unix_seconds(&self) -> i64 {
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self.seconds - if cfg!(windows) { 11644473600 } else { 0 }
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}
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/// Returns the nanosecond precision of this timestamp.
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///
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/// The returned value is always less than one billion and represents a
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/// portion of a second forward from the seconds returned by the `seconds`
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/// method.
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pub const fn nanoseconds(&self) -> u32 {
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self.nanos
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}
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}
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impl fmt::Display for FileTime {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}.{:09}s", self.seconds, self.nanos)
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}
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}
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impl From<SystemTime> for FileTime {
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fn from(time: SystemTime) -> FileTime {
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FileTime::from_system_time(time)
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}
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}
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/// Set the last access and modification times for a file on the filesystem.
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///
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/// This function will set the `atime` and `mtime` metadata fields for a file
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/// on the local filesystem, returning any error encountered.
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pub fn set_file_times<P>(p: P, atime: FileTime, mtime: FileTime) -> io::Result<()>
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where
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P: AsRef<Path>,
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{
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imp::set_file_times(p.as_ref(), atime, mtime)
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}
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/// Set the last access and modification times for a file handle.
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///
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/// This function will either or both of the `atime` and `mtime` metadata
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/// fields for a file handle , returning any error encountered. If `None` is
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/// specified then the time won't be updated. If `None` is specified for both
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/// options then no action is taken.
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pub fn set_file_handle_times(
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f: &fs::File,
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atime: Option<FileTime>,
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mtime: Option<FileTime>,
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) -> io::Result<()> {
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imp::set_file_handle_times(f, atime, mtime)
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}
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/// Set the last access and modification times for a file on the filesystem.
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/// This function does not follow symlink.
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///
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/// This function will set the `atime` and `mtime` metadata fields for a file
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/// on the local filesystem, returning any error encountered.
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pub fn set_symlink_file_times<P>(p: P, atime: FileTime, mtime: FileTime) -> io::Result<()>
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where
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P: AsRef<Path>,
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{
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imp::set_symlink_file_times(p.as_ref(), atime, mtime)
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}
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/// Set the last modification time for a file on the filesystem.
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///
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/// This function will set the `mtime` metadata field for a file on the local
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/// filesystem, returning any error encountered.
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///
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/// # Platform support
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///
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/// Where supported this will attempt to issue just one syscall to update only
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/// the `mtime`, but where not supported this may issue one syscall to learn the
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/// existing `atime` so only the `mtime` can be configured.
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pub fn set_file_mtime<P>(p: P, mtime: FileTime) -> io::Result<()>
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where
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P: AsRef<Path>,
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{
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imp::set_file_mtime(p.as_ref(), mtime)
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}
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/// Set the last access time for a file on the filesystem.
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///
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/// This function will set the `atime` metadata field for a file on the local
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/// filesystem, returning any error encountered.
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///
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/// # Platform support
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///
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/// Where supported this will attempt to issue just one syscall to update only
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/// the `atime`, but where not supported this may issue one syscall to learn the
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/// existing `mtime` so only the `atime` can be configured.
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pub fn set_file_atime<P>(p: P, atime: FileTime) -> io::Result<()>
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where
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P: AsRef<Path>,
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{
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imp::set_file_atime(p.as_ref(), atime)
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}
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#[cfg(test)]
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mod tests {
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use super::{
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set_file_atime, set_file_handle_times, set_file_mtime, set_file_times,
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set_symlink_file_times, FileTime,
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};
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use std::fs::{self, File};
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use std::io;
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use std::path::Path;
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use std::time::{Duration, UNIX_EPOCH};
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use tempfile::Builder;
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#[cfg(unix)]
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fn make_symlink_file<P, Q>(src: P, dst: Q) -> io::Result<()>
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where
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P: AsRef<Path>,
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Q: AsRef<Path>,
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{
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use std::os::unix::fs::symlink;
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symlink(src, dst)
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}
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#[cfg(windows)]
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fn make_symlink_file<P, Q>(src: P, dst: Q) -> io::Result<()>
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where
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P: AsRef<Path>,
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Q: AsRef<Path>,
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{
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use std::os::windows::fs::symlink_file;
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symlink_file(src, dst)
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}
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#[cfg(unix)]
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fn make_symlink_dir<P, Q>(src: P, dst: Q) -> io::Result<()>
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where
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P: AsRef<Path>,
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Q: AsRef<Path>,
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{
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use std::os::unix::fs::symlink;
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symlink(src, dst)
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}
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#[cfg(windows)]
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fn make_symlink_dir<P, Q>(src: P, dst: Q) -> io::Result<()>
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where
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P: AsRef<Path>,
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Q: AsRef<Path>,
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{
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use std::os::windows::fs::symlink_dir;
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symlink_dir(src, dst)
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}
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#[test]
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#[cfg(windows)]
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fn from_unix_time_test() {
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let time = FileTime::from_unix_time(10, 100_000_000);
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assert_eq!(11644473610, time.seconds);
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assert_eq!(100_000_000, time.nanos);
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let time = FileTime::from_unix_time(-10, 100_000_000);
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assert_eq!(11644473590, time.seconds);
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assert_eq!(100_000_000, time.nanos);
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let time = FileTime::from_unix_time(-12_000_000_000, 0);
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assert_eq!(-355526400, time.seconds);
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assert_eq!(0, time.nanos);
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}
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#[test]
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#[cfg(not(windows))]
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fn from_unix_time_test() {
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let time = FileTime::from_unix_time(10, 100_000_000);
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assert_eq!(10, time.seconds);
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assert_eq!(100_000_000, time.nanos);
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let time = FileTime::from_unix_time(-10, 100_000_000);
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assert_eq!(-10, time.seconds);
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assert_eq!(100_000_000, time.nanos);
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let time = FileTime::from_unix_time(-12_000_000_000, 0);
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assert_eq!(-12_000_000_000, time.seconds);
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assert_eq!(0, time.nanos);
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}
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#[test]
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#[cfg(windows)]
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fn from_system_time_test() {
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let time = FileTime::from_system_time(UNIX_EPOCH + Duration::from_secs(10));
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assert_eq!(11644473610, time.seconds);
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assert_eq!(0, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_secs(10));
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assert_eq!(11644473590, time.seconds);
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assert_eq!(0, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_millis(1100));
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assert_eq!(11644473598, time.seconds);
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assert_eq!(900_000_000, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_secs(12_000_000_000));
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assert_eq!(-355526400, time.seconds);
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assert_eq!(0, time.nanos);
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}
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#[test]
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#[cfg(not(windows))]
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fn from_system_time_test() {
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let time = FileTime::from_system_time(UNIX_EPOCH + Duration::from_secs(10));
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assert_eq!(10, time.seconds);
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assert_eq!(0, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_secs(10));
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assert_eq!(-10, time.seconds);
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assert_eq!(0, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_millis(1100));
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assert_eq!(-2, time.seconds);
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assert_eq!(900_000_000, time.nanos);
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let time = FileTime::from_system_time(UNIX_EPOCH - Duration::from_secs(12_000_000));
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assert_eq!(-12_000_000, time.seconds);
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assert_eq!(0, time.nanos);
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}
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#[test]
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fn set_file_times_test() -> io::Result<()> {
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let td = Builder::new().prefix("filetime").tempdir()?;
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let path = td.path().join("foo.txt");
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let mut f = File::create(&path)?;
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let metadata = fs::metadata(&path)?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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let atime = FileTime::from_last_access_time(&metadata);
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set_file_times(&path, atime, mtime)?;
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let new_mtime = FileTime::from_unix_time(10_000, 0);
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set_file_times(&path, atime, new_mtime)?;
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let metadata = fs::metadata(&path)?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(mtime, new_mtime, "modification should be updated");
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// Update just mtime
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let new_mtime = FileTime::from_unix_time(20_000, 0);
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set_file_handle_times(&mut f, None, Some(new_mtime))?;
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let metadata = f.metadata()?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(mtime, new_mtime, "modification time should be updated");
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let new_atime = FileTime::from_last_access_time(&metadata);
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assert_eq!(atime, new_atime, "accessed time should not be updated");
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// Update just atime
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let new_atime = FileTime::from_unix_time(30_000, 0);
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set_file_handle_times(&mut f, Some(new_atime), None)?;
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let metadata = f.metadata()?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(mtime, new_mtime, "modification time should not be updated");
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let atime = FileTime::from_last_access_time(&metadata);
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assert_eq!(atime, new_atime, "accessed time should be updated");
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let spath = td.path().join("bar.txt");
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make_symlink_file(&path, &spath)?;
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let metadata = fs::symlink_metadata(&spath)?;
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let smtime = FileTime::from_last_modification_time(&metadata);
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set_file_times(&spath, atime, mtime)?;
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let metadata = fs::metadata(&path)?;
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let cur_mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(mtime, cur_mtime);
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let metadata = fs::symlink_metadata(&spath)?;
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let cur_mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(smtime, cur_mtime);
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set_file_times(&spath, atime, new_mtime)?;
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let metadata = fs::metadata(&path)?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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assert_eq!(mtime, new_mtime);
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let metadata = fs::symlink_metadata(&spath)?;
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let mtime = FileTime::from_last_modification_time(&metadata);
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|
assert_eq!(mtime, smtime);
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn set_dir_times_test() -> io::Result<()> {
|
|
let td = Builder::new().prefix("filetime").tempdir()?;
|
|
let path = td.path().join("foo");
|
|
fs::create_dir(&path)?;
|
|
|
|
let metadata = fs::metadata(&path)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_file_times(&path, atime, mtime)?;
|
|
|
|
let new_mtime = FileTime::from_unix_time(10_000, 0);
|
|
set_file_times(&path, atime, new_mtime)?;
|
|
|
|
let metadata = fs::metadata(&path)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime, "modification should be updated");
|
|
|
|
// Update just mtime
|
|
let new_mtime = FileTime::from_unix_time(20_000, 0);
|
|
set_file_mtime(&path, new_mtime)?;
|
|
let metadata = fs::metadata(&path)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime, "modification time should be updated");
|
|
let new_atime = FileTime::from_last_access_time(&metadata);
|
|
assert_eq!(atime, new_atime, "accessed time should not be updated");
|
|
|
|
// Update just atime
|
|
let new_atime = FileTime::from_unix_time(30_000, 0);
|
|
set_file_atime(&path, new_atime)?;
|
|
let metadata = fs::metadata(&path)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime, "modification time should not be updated");
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
assert_eq!(atime, new_atime, "accessed time should be updated");
|
|
|
|
let spath = td.path().join("bar");
|
|
make_symlink_dir(&path, &spath)?;
|
|
let metadata = fs::symlink_metadata(&spath)?;
|
|
let smtime = FileTime::from_last_modification_time(&metadata);
|
|
|
|
set_file_times(&spath, atime, mtime)?;
|
|
|
|
let metadata = fs::metadata(&path)?;
|
|
let cur_mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, cur_mtime);
|
|
|
|
let metadata = fs::symlink_metadata(&spath)?;
|
|
let cur_mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(smtime, cur_mtime);
|
|
|
|
set_file_times(&spath, atime, new_mtime)?;
|
|
|
|
let metadata = fs::metadata(&path)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let metadata = fs::symlink_metadata(&spath)?;
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, smtime);
|
|
Ok(())
|
|
}
|
|
|
|
#[test]
|
|
fn set_file_times_pre_unix_epoch_test() {
|
|
let td = Builder::new().prefix("filetime").tempdir().unwrap();
|
|
let path = td.path().join("foo.txt");
|
|
File::create(&path).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_file_times(&path, atime, mtime).unwrap();
|
|
|
|
let new_mtime = FileTime::from_unix_time(-10_000, 0);
|
|
set_file_times(&path, atime, new_mtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
}
|
|
|
|
#[test]
|
|
#[cfg(windows)]
|
|
fn set_file_times_pre_windows_epoch_test() {
|
|
let td = Builder::new().prefix("filetime").tempdir().unwrap();
|
|
let path = td.path().join("foo.txt");
|
|
File::create(&path).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_file_times(&path, atime, mtime).unwrap();
|
|
|
|
let new_mtime = FileTime::from_unix_time(-12_000_000_000, 0);
|
|
assert!(set_file_times(&path, atime, new_mtime).is_err());
|
|
}
|
|
|
|
#[test]
|
|
fn set_symlink_file_times_test() {
|
|
let td = Builder::new().prefix("filetime").tempdir().unwrap();
|
|
let path = td.path().join("foo.txt");
|
|
File::create(&path).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_symlink_file_times(&path, atime, mtime).unwrap();
|
|
|
|
let new_mtime = FileTime::from_unix_time(10_000, 0);
|
|
set_symlink_file_times(&path, atime, new_mtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let spath = td.path().join("bar.txt");
|
|
make_symlink_file(&path, &spath).unwrap();
|
|
|
|
let metadata = fs::symlink_metadata(&spath).unwrap();
|
|
let smtime = FileTime::from_last_modification_time(&metadata);
|
|
let satime = FileTime::from_last_access_time(&metadata);
|
|
set_symlink_file_times(&spath, smtime, satime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let new_smtime = FileTime::from_unix_time(20_000, 0);
|
|
set_symlink_file_times(&spath, atime, new_smtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&spath).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let metadata = fs::symlink_metadata(&spath).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_smtime);
|
|
}
|
|
|
|
#[test]
|
|
fn set_symlink_dir_times_test() {
|
|
let td = Builder::new().prefix("filetime").tempdir().unwrap();
|
|
let path = td.path().join("foo");
|
|
fs::create_dir(&path).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_symlink_file_times(&path, atime, mtime).unwrap();
|
|
|
|
let new_mtime = FileTime::from_unix_time(10_000, 0);
|
|
set_symlink_file_times(&path, atime, new_mtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let spath = td.path().join("bar");
|
|
make_symlink_dir(&path, &spath).unwrap();
|
|
|
|
let metadata = fs::symlink_metadata(&spath).unwrap();
|
|
let smtime = FileTime::from_last_modification_time(&metadata);
|
|
let satime = FileTime::from_last_access_time(&metadata);
|
|
set_symlink_file_times(&spath, smtime, satime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let new_smtime = FileTime::from_unix_time(20_000, 0);
|
|
set_symlink_file_times(&spath, atime, new_smtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&spath).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime);
|
|
|
|
let metadata = fs::symlink_metadata(&spath).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_smtime);
|
|
}
|
|
|
|
#[test]
|
|
fn set_single_time_test() {
|
|
use super::{set_file_atime, set_file_mtime};
|
|
|
|
let td = Builder::new().prefix("filetime").tempdir().unwrap();
|
|
let path = td.path().join("foo.txt");
|
|
File::create(&path).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
set_file_times(&path, atime, mtime).unwrap();
|
|
|
|
let new_mtime = FileTime::from_unix_time(10_000, 0);
|
|
set_file_mtime(&path, new_mtime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
assert_eq!(mtime, new_mtime, "modification time should be updated");
|
|
assert_eq!(
|
|
atime,
|
|
FileTime::from_last_access_time(&metadata),
|
|
"access time should not be updated",
|
|
);
|
|
|
|
let new_atime = FileTime::from_unix_time(20_000, 0);
|
|
set_file_atime(&path, new_atime).unwrap();
|
|
|
|
let metadata = fs::metadata(&path).unwrap();
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
assert_eq!(atime, new_atime, "access time should be updated");
|
|
assert_eq!(
|
|
mtime,
|
|
FileTime::from_last_modification_time(&metadata),
|
|
"modification time should not be updated"
|
|
);
|
|
}
|
|
}
|