forked from rust-cli/env_logger
/
extern_impl.rs
84 lines (72 loc) · 2.25 KB
/
extern_impl.rs
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use std::fmt;
use std::time::SystemTime;
use humantime::{format_rfc3339_nanos, format_rfc3339_seconds};
use ::fmt::Formatter;
pub(in ::fmt) mod glob {
pub use super::*;
}
impl Formatter {
/// Get a [`Timestamp`] for the current date and time in UTC.
///
/// # Examples
///
/// Include the current timestamp with the log record:
///
/// ```
/// use std::io::Write;
///
/// let mut builder = env_logger::Builder::new();
///
/// builder.format(|buf, record| {
/// let ts = buf.timestamp();
///
/// writeln!(buf, "{}: {}: {}", ts, record.level(), record.args())
/// });
/// ```
///
/// [`Timestamp`]: struct.Timestamp.html
pub fn timestamp(&self) -> Timestamp {
Timestamp(SystemTime::now())
}
/// Get a [`PreciseTimestamp`] for the current date and time in UTC with nanos.
pub fn precise_timestamp(&self) -> PreciseTimestamp {
PreciseTimestamp(SystemTime::now())
}
}
/// An [RFC3339] formatted timestamp.
///
/// The timestamp implements [`Display`] and can be written to a [`Formatter`].
///
/// [RFC3339]: https://www.ietf.org/rfc/rfc3339.txt
/// [`Display`]: https://doc.rust-lang.org/stable/std/fmt/trait.Display.html
/// [`Formatter`]: struct.Formatter.html
pub struct Timestamp(SystemTime);
/// An [RFC3339] formatted timestamp with nanos.
///
/// [RFC3339]: https://www.ietf.org/rfc/rfc3339.txt
#[derive(Debug)]
pub struct PreciseTimestamp(SystemTime);
impl fmt::Debug for Timestamp {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
/// A `Debug` wrapper for `Timestamp` that uses the `Display` implementation.
struct TimestampValue<'a>(&'a Timestamp);
impl<'a> fmt::Debug for TimestampValue<'a> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt::Display::fmt(&self.0, f)
}
}
f.debug_tuple("Timestamp")
.field(&TimestampValue(&self))
.finish()
}
}
impl fmt::Display for Timestamp {
fn fmt(&self, f: &mut fmt::Formatter)->fmt::Result {
format_rfc3339_seconds(self.0).fmt(f)
}
}
impl fmt::Display for PreciseTimestamp {
fn fmt(&self, f: &mut fmt::Formatter)->fmt::Result {
format_rfc3339_nanos(self.0).fmt(f)
}
}