1 files changed, 67 insertions, 0 deletions
diff --git a/third_party/rust/headers/src/util/seconds.rs b/third_party/rust/headers/src/util/seconds.rs
new file mode 100644
index 0000000000..a1a9194b0c
--- /dev/null
+++ b/third_party/rust/headers/src/util/seconds.rs
@@ -0,0 +1,67 @@
+use std::fmt;
+use std::time::Duration;
+
+use util::IterExt;
+use HeaderValue;
+
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub(crate) struct Seconds(Duration);
+
+impl Seconds {
+    pub(crate) fn from_val(val: &HeaderValue) -> Option<Self> {
+        let secs = val.to_str().ok()?.parse().ok()?;
+
+        Some(Self::from_secs(secs))
+    }
+
+    pub(crate) fn from_secs(secs: u64) -> Self {
+        Self::from(Duration::from_secs(secs))
+    }
+
+    pub(crate) fn as_u64(&self) -> u64 {
+        self.0.as_secs()
+    }
+}
+
+impl super::TryFromValues for Seconds {
+    fn try_from_values<'i, I>(values: &mut I) -> Result<Self, ::Error>
+    where
+        I: Iterator<Item = &'i HeaderValue>,
+    {
+        values
+            .just_one()
+            .and_then(Seconds::from_val)
+            .ok_or_else(::Error::invalid)
+    }
+}
+
+impl<'a> From<&'a Seconds> for HeaderValue {
+    fn from(secs: &'a Seconds) -> HeaderValue {
+        secs.0.as_secs().into()
+    }
+}
+
+impl From<Duration> for Seconds {
+    fn from(dur: Duration) -> Seconds {
+        debug_assert!(dur.subsec_nanos() == 0);
+        Seconds(dur)
+    }
+}
+
+impl From<Seconds> for Duration {
+    fn from(secs: Seconds) -> Duration {
+        secs.0
+    }
+}
+
+impl fmt::Debug for Seconds {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}s", self.0.as_secs())
+    }
+}
+
+impl fmt::Display for Seconds {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt::Display::fmt(&self.0.as_secs(), f)
+    }
+}