add bits to deal with Upgrade requests

src/header/common/mod.rs

@@ -6,25 +6,21 @@
 //! strongly-typed theme, the [mime](http://seanmonstar.github.io/mime.rs) crate
 //! is used, such as `ContentType(pub Mime)`.
 
-pub use self::host::Host;
-pub use self::content_length::ContentLength;
-pub use self::content_type::ContentType;
 pub use self::accept::Accept;
 pub use self::connection::Connection;
+pub use self::content_length::ContentLength;
+pub use self::content_type::ContentType;
+pub use self::date::Date;
+pub use self::host::Host;
+pub use self::location::Location;
 pub use self::transfer_encoding::TransferEncoding;
+pub use self::upgrade::Upgrade;
 pub use self::user_agent::UserAgent;
 pub use self::server::Server;
-pub use self::date::Date;
-pub use self::location::Location;
 
-/// Exposes the Host header.
-pub mod host;
-
-/// Exposes the ContentLength header.
-pub mod content_length;
-
-/// Exposes the ContentType header.
-pub mod content_type;
+use std::fmt::{mod, Show};
+use std::from_str::FromStr;
+use std::str::from_utf8;
 
 /// Exposes the Accept header.
 pub mod accept;
@@ -32,17 +28,30 @@ pub mod accept;
 /// Exposes the Connection header.
 pub mod connection;
 
-/// Exposes the TransferEncoding header.
-pub mod transfer_encoding;
+/// Exposes the ContentLength header.
+pub mod content_length;
 
-/// Exposes the UserAgent header.
-pub mod user_agent;
+/// Exposes the ContentType header.
+pub mod content_type;
+
+/// Exposes the Date header.
+pub mod date;
+
+/// Exposes the Host header.
+pub mod host;
 
 /// Exposes the Server header.
 pub mod server;
 
-/// Exposes the Date header.
-pub mod date;
+/// Exposes the TransferEncoding header.
+pub mod transfer_encoding;
+
+/// Exposes the Upgrade header.
+pub mod upgrade;
+
+/// Exposes the UserAgent header.
+pub mod user_agent;
+
 
 /// Exposes the Location header.
 pub mod location;
@@ -50,3 +59,29 @@ pub mod location;
 pub mod util;
 
 
+fn from_comma_delimited<T: FromStr>(raw: &[Vec<u8>]) -> Option<Vec<T>> {
+    if raw.len() != 1 {
+        return None;
+    }
+    // we JUST checked that raw.len() == 1, so raw[0] WILL exist.
+    match from_utf8(unsafe { raw.as_slice().unsafe_get(0).as_slice() }) {
+        Some(s) => {
+            Some(s.as_slice()
+                 .split([',', ' '].as_slice())
+                 .filter_map(from_str)
+                 .collect())
+        }
+        None => None
+    }
+}
+
+fn fmt_comma_delimited<T: Show>(fmt: &mut fmt::Formatter, parts: &[T]) -> fmt::Result {
+    let last = parts.len() - 1;
+    for (i, part) in parts.iter().enumerate() {
+        try!(part.fmt(fmt));
+        if i < last {
+            try!(", ".fmt(fmt));
+        }
+    }
+    Ok(())
+}