From c79e6f0aa53ec1d88197f5284afa85ac96ebe718 Mon Sep 17 00:00:00 2001
From: Jonathan Reem <jonathan.reem@gmail.com>
Date: Sun, 23 Nov 2014 22:30:26 -0800
Subject: [PATCH] feat(headers): Added a HeaderFormatter for getting the HTTP
 representation of a header.

---
 src/header/mod.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/header/mod.rs b/src/header/mod.rs
index 41c07abd..3588b2d5 100644
--- a/src/header/mod.rs
+++ b/src/header/mod.rs
@@ -423,6 +423,19 @@ impl<S: Str, H: hash::Writer> hash::Hash<H> for CaseInsensitive<S> {
     }
 }
 
+/// A wrapper around any Header with a Show impl that calls fmt_header.
+///
+/// This can be used like so: `format!("{}", ShowHeader(header))` to
+/// get the representation of a Header which will be written to an
+/// outgoing TcpStream.
+pub struct HeaderFormatter<H: HeaderFormat>(H);
+
+impl<H: HeaderFormat> Show for HeaderFormatter<H> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        self.fmt_header(f)
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use std::io::MemReader;