1 files changed, 88 insertions, 0 deletions
diff --git a/vendor/gix-date/src/time/format.rs b/vendor/gix-date/src/time/format.rs
new file mode 100644
index 000000000..37cc12bd2
--- /dev/null
+++ b/vendor/gix-date/src/time/format.rs
@@ -0,0 +1,88 @@
+use time::{format_description::FormatItem, macros::format_description};
+
+use crate::{time::Format, Time};
+
+/// E.g. `2018-12-24`
+pub const SHORT: &[FormatItem<'_>] = format_description!("[year]-[month]-[day]");
+
+/// E.g. `Thu, 18 Aug 2022 12:45:06 +0800`
+pub const RFC2822: &[FormatItem<'_>] = format_description!(
+    "[weekday repr:short], [day] [month repr:short] [year] [hour]:[minute]:[second] [offset_hour sign:mandatory][offset_minute]"
+);
+
+/// E.g. `Thu, 8 Aug 2022 12:45:06 +0800`. This is output by `git log --pretty=%aD`.
+pub const GIT_RFC2822: &[FormatItem<'_>] = format_description!(
+    "[weekday repr:short], \
+     [day padding:none] \
+     [month repr:short] \
+     [year] \
+     [hour]:[minute]:[second] \
+     [offset_hour sign:mandatory][offset_minute]"
+);
+
+/// E.g. `2022-08-17 22:04:58 +0200`
+pub const ISO8601: &[FormatItem<'_>] =
+    format_description!("[year]-[month]-[day] [hour]:[minute]:[second] [offset_hour sign:mandatory][offset_minute]");
+
+/// E.g. `2022-08-17T21:43:13+08:00`
+pub const ISO8601_STRICT: &[FormatItem<'_>] =
+    format_description!("[year]-[month]-[day]T[hour]:[minute]:[second][offset_hour sign:mandatory]:[offset_minute]");
+
+/// E.g. `123456789`
+pub const UNIX: Format<'static> = Format::Unix;
+
+/// E.g. `1660874655 +0800`
+pub const RAW: Format<'static> = Format::Raw;
+
+/// E.g. `Thu Sep 04 2022 10:45:06 -0400`, like the git `DEFAULT`, but with the year and time fields swapped.
+pub const GITOXIDE: &[FormatItem<'_>] = format_description!(
+    "[weekday repr:short] [month repr:short] [day] [year] [hour]:[minute]:[second] [offset_hour sign:mandatory][offset_minute]"
+);
+
+/// E.g. `Thu Sep 4 10:45:06 2022 -0400`. This is output by `git log --pretty=%ad`.
+pub const DEFAULT: &[FormatItem<'_>] = format_description!(
+    "[weekday repr:short] \
+     [month repr:short] \
+     [day padding:none] \
+     [hour]:[minute]:[second] \
+     [year] \
+     [offset_hour sign:mandatory][offset_minute]"
+);
+
+mod format_impls {
+    use time::format_description::FormatItem;
+
+    use crate::time::Format;
+
+    impl<'a> From<&'a [FormatItem<'a>]> for Format<'a> {
+        fn from(f: &'a [FormatItem<'a>]) -> Self {
+            Format::Custom(f)
+        }
+    }
+}
+
+/// Formatting
+impl Time {
+    /// Format this instance according to the given `format`.
+    ///
+    /// Use the [`format_description`](https://time-rs.github.io/book/api/format-description.html) macro to create and
+    /// validate formats at compile time, courtesy of the [`time`] crate.
+    pub fn format<'a>(&self, format: impl Into<Format<'a>>) -> String {
+        match format.into() {
+            Format::Custom(format) => self
+                .to_time()
+                .format(&format)
+                .expect("well-known format into memory never fails"),
+            Format::Unix => self.seconds_since_unix_epoch.to_string(),
+            Format::Raw => self.to_bstring().to_string(),
+        }
+    }
+}
+
+impl Time {
+    fn to_time(self) -> time::OffsetDateTime {
+        time::OffsetDateTime::from_unix_timestamp(self.seconds_since_unix_epoch as i64)
+            .expect("always valid unix time")
+            .to_offset(time::UtcOffset::from_whole_seconds(self.offset_in_seconds).expect("valid offset"))
+    }
+}