Cleanup headers

src/auth/authorization.rs

@@ -21,7 +21,7 @@ use crate::headers::{Header, HeaderName, HeaderValue, Headers, AUTHORIZATION};
 /// let authz = Authorization::new(scheme, credentials.into());
 ///
 /// let mut res = Response::new(200);
-/// authz.apply(&mut res);
+/// res.insert_header(&authz, &authz);
 ///
 /// let authz = Authorization::from_headers(res)?.unwrap();
 ///
@@ -71,24 +71,6 @@ impl Authorization {
         }))
     }
 
-    /// Sets the header.
-    pub fn apply(&self, mut headers: impl AsMut<Headers>) {
-        headers.as_mut().insert(self.name(), self.value());
-    }
-
-    /// Get the `HeaderName`.
-    pub fn name(&self) -> HeaderName {
-        self.header_name()
-    }
-
-    /// Get the `HeaderValue`.
-    pub fn value(&self) -> HeaderValue {
-        let output = format!("{} {}", self.scheme, self.credentials);
-
-        // SAFETY: the internal string is validated to be ASCII.
-        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
-    }
-
     /// Get the authorization scheme.
     pub fn scheme(&self) -> AuthenticationScheme {
         self.scheme
@@ -116,7 +98,10 @@ impl Header for Authorization {
     }
 
     fn header_value(&self) -> HeaderValue {
-        self.value()
+        let output = format!("{} {}", self.scheme, self.credentials);
+
+        // SAFETY: the internal string is validated to be ASCII.
+        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
     }
 }
 
@@ -132,7 +117,7 @@ mod test {
         let authz = Authorization::new(scheme, credentials.into());
 
         let mut headers = Headers::new();
-        authz.apply(&mut headers);
+        authz.apply_header(&mut headers);
 
         let authz = Authorization::from_headers(headers)?.unwrap();
 

src/auth/basic_auth.rs

@@ -1,6 +1,9 @@
-use crate::auth::{AuthenticationScheme, Authorization};
 use crate::headers::{HeaderName, HeaderValue, Headers, AUTHORIZATION};
 use crate::Status;
+use crate::{
+    auth::{AuthenticationScheme, Authorization},
+    headers::Header,
+};
 use crate::{bail_status as bail, ensure_status as ensure};
 
 /// HTTP Basic authorization.
@@ -22,7 +25,7 @@ use crate::{bail_status as bail, ensure_status as ensure};
 /// let authz = BasicAuth::new(username, password);
 ///
 /// let mut res = Response::new(200);
-/// authz.apply(&mut res);
+/// res.insert_header(&authz, &authz);
 ///
 /// let authz = BasicAuth::from_headers(res)?.unwrap();
 ///
@@ -84,24 +87,6 @@ impl BasicAuth {
         Ok(Self { username, password })
     }
 
-    /// Sets the header.
-    pub fn apply(&self, mut headers: impl AsMut<Headers>) {
-        headers.as_mut().insert(self.name(), self.value());
-    }
-
-    /// Get the `HeaderName`.
-    pub fn name(&self) -> HeaderName {
-        AUTHORIZATION
-    }
-
-    /// Get the `HeaderValue`.
-    pub fn value(&self) -> HeaderValue {
-        let scheme = AuthenticationScheme::Basic;
-        let credentials = base64::encode(format!("{}:{}", self.username, self.password));
-        let auth = Authorization::new(scheme, credentials);
-        auth.value()
-    }
-
     /// Get the username.
     pub fn username(&self) -> &str {
         self.username.as_str()
@@ -113,13 +98,16 @@ impl BasicAuth {
     }
 }
 
-impl crate::headers::Header for BasicAuth {
+impl Header for BasicAuth {
     fn header_name(&self) -> HeaderName {
         AUTHORIZATION
     }
 
     fn header_value(&self) -> HeaderValue {
-        self.value()
+        let scheme = AuthenticationScheme::Basic;
+        let credentials = base64::encode(format!("{}:{}", self.username, self.password));
+        let auth = Authorization::new(scheme, credentials);
+        auth.header_value()
     }
 }
 
@@ -135,7 +123,7 @@ mod test {
         let authz = BasicAuth::new(username, password);
 
         let mut headers = Headers::new();
-        authz.apply(&mut headers);
+        authz.apply_header(&mut headers);
 
         let authz = BasicAuth::from_headers(headers)?.unwrap();
 

src/auth/mod.rs

@@ -13,7 +13,7 @@
 //! let authz = BasicAuth::new(username, password);
 //!
 //! let mut res = Response::new(200);
-//! authz.apply(&mut res);
+//! res.insert_header(&authz, &authz);
 //!
 //! let authz = BasicAuth::from_headers(res)?.unwrap();
 //!

src/auth/www_authenticate.rs

@@ -1,6 +1,6 @@
-use crate::auth::AuthenticationScheme;
 use crate::bail_status as bail;
 use crate::headers::{HeaderName, HeaderValue, Headers, WWW_AUTHENTICATE};
+use crate::{auth::AuthenticationScheme, headers::Header};
 
 /// Define the authentication method that should be used to gain access to a
 /// resource.
@@ -27,7 +27,7 @@ use crate::headers::{HeaderName, HeaderValue, Headers, WWW_AUTHENTICATE};
 /// let authz = WwwAuthenticate::new(scheme, realm.into());
 ///
 /// let mut res = Response::new(200);
-/// authz.apply(&mut res);
+/// res.insert_header(&authz, &authz);
 ///
 /// let authz = WwwAuthenticate::from_headers(res)?.unwrap();
 ///
@@ -93,24 +93,6 @@ impl WwwAuthenticate {
         Ok(Some(Self { scheme, realm }))
     }
 
-    /// Sets the header.
-    pub fn apply(&self, mut headers: impl AsMut<Headers>) {
-        headers.as_mut().insert(self.name(), self.value());
-    }
-
-    /// Get the `HeaderName`.
-    pub fn name(&self) -> HeaderName {
-        WWW_AUTHENTICATE
-    }
-
-    /// Get the `HeaderValue`.
-    pub fn value(&self) -> HeaderValue {
-        let output = format!(r#"{} realm="{}", charset="UTF-8""#, self.scheme, self.realm);
-
-        // SAFETY: the internal string is validated to be ASCII.
-        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
-    }
-
     /// Get the authorization scheme.
     pub fn scheme(&self) -> AuthenticationScheme {
         self.scheme
@@ -132,13 +114,16 @@ impl WwwAuthenticate {
     }
 }
 
-impl crate::headers::Header for WwwAuthenticate {
+impl Header for WwwAuthenticate {
     fn header_name(&self) -> HeaderName {
         WWW_AUTHENTICATE
     }
 
     fn header_value(&self) -> HeaderValue {
-        self.value()
+        let output = format!(r#"{} realm="{}", charset="UTF-8""#, self.scheme, self.realm);
+
+        // SAFETY: the internal string is validated to be ASCII.
+        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
     }
 }
 
@@ -154,7 +139,7 @@ mod test {
         let authz = WwwAuthenticate::new(scheme, realm.into());
 
         let mut headers = Headers::new();
-        authz.apply(&mut headers);
+        authz.apply_header(&mut headers);
 
         assert_eq!(
             headers["WWW-Authenticate"],

src/cache/age.rs

@@ -1,8 +1,8 @@
-use crate::headers::{HeaderName, HeaderValue, Headers, ToHeaderValues, AGE};
+use crate::headers::{Header, HeaderName, HeaderValue, Headers, AGE};
 use crate::Status;
 
 use std::fmt::Debug;
-use std::option;
+
 use std::time::Duration;
 
 /// HTTP `Age` header
@@ -22,7 +22,7 @@ use std::time::Duration;
 /// let age = Age::from_secs(12);
 ///
 /// let mut res = Response::new(200);
-/// age.apply(&mut res);
+/// res.insert_header(&age, &age);
 ///
 /// let age = Age::from_headers(res)?.unwrap();
 /// assert_eq!(age, Age::from_secs(12));
@@ -67,44 +67,21 @@ impl Age {
 
         Ok(Some(Self { dur }))
     }
+}
 
-    /// Insert a `HeaderName` + `HeaderValue` pair into a `Headers` instance.
-    pub fn apply(&self, mut headers: impl AsMut<Headers>) {
-        headers.as_mut().insert(AGE, self.value());
-    }
-
-    /// Get the `HeaderName`.
-    pub fn name(&self) -> HeaderName {
+impl Header for Age {
+    fn header_name(&self) -> HeaderName {
         AGE
     }
 
-    /// Get the `HeaderValue`.
-    pub fn value(&self) -> HeaderValue {
+    fn header_value(&self) -> HeaderValue {
         let output = self.dur.as_secs().to_string();
 
         // SAFETY: the internal string is validated to be ASCII.
         unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
     }
 }
 
-impl ToHeaderValues for Age {
-    type Iter = option::IntoIter<HeaderValue>;
-    fn to_header_values(&self) -> crate::Result<Self::Iter> {
-        // A HeaderValue will always convert into itself.
-        Ok(self.value().to_header_values().unwrap())
-    }
-}
-
-impl crate::headers::Header for Age {
-    fn header_name(&self) -> HeaderName {
-        AGE
-    }
-
-    fn header_value(&self) -> HeaderValue {
-        self.value()
-    }
-}
-
 #[cfg(test)]
 mod test {
     use super::*;
@@ -115,7 +92,7 @@ mod test {
         let age = Age::new(Duration::from_secs(12));
 
         let mut headers = Headers::new();
-        age.apply(&mut headers);
+        age.apply_header(&mut headers);
 
         let age = Age::from_headers(headers)?.unwrap();
         assert_eq!(age, Age::new(Duration::from_secs(12)));

src/cache/cache_control/cache_control.rs

@@ -1,9 +1,11 @@
-use crate::cache::CacheDirective;
-use crate::headers::{HeaderName, HeaderValue, Headers, ToHeaderValues, CACHE_CONTROL};
+use headers::Header;
+
+use crate::headers::{HeaderName, HeaderValue, Headers, CACHE_CONTROL};
+use crate::{cache::CacheDirective, headers};
 
 use std::fmt::{self, Debug, Write};
 use std::iter::Iterator;
-use std::option;
+
 use std::slice;
 
 /// A Cache-Control header.
@@ -20,7 +22,7 @@ use std::slice;
 /// entries.push(CacheDirective::NoStore);
 ///
 /// let mut res = Response::new(200);
-/// entries.apply(&mut res);
+/// res.insert_header(&entries, &entries);
 ///
 /// let entries = CacheControl::from_headers(res)?.unwrap();
 /// let mut entries = entries.iter();
@@ -59,31 +61,6 @@ impl CacheControl {
 
         Ok(Some(Self { entries }))
     }
-
-    /// Sets the `Server-Timing` header.
-    pub fn apply(&self, mut headers: impl AsMut<Headers>) {
-        headers.as_mut().insert(CACHE_CONTROL, self.value());
-    }
-
-    /// Get the `HeaderName`.
-    pub fn name(&self) -> HeaderName {
-        CACHE_CONTROL
-    }
-
-    /// Get the `HeaderValue`.
-    pub fn value(&self) -> HeaderValue {
-        let mut output = String::new();
-        for (n, directive) in self.entries.iter().enumerate() {
-            let directive: HeaderValue = directive.clone().into();
-            match n {
-                0 => write!(output, "{}", directive).unwrap(),
-                _ => write!(output, ", {}", directive).unwrap(),
-            };
-        }
-
-        // SAFETY: the internal string is validated to be ASCII.
-        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
-    }
     /// Push a directive into the list of entries.
     pub fn push(&mut self, directive: CacheDirective) {
         self.entries.push(directive);
@@ -104,12 +81,22 @@ impl CacheControl {
     }
 }
 
-impl crate::headers::Header for CacheControl {
+impl Header for CacheControl {
     fn header_name(&self) -> HeaderName {
         CACHE_CONTROL
     }
     fn header_value(&self) -> HeaderValue {
-        self.value()
+        let mut output = String::new();
+        for (n, directive) in self.entries.iter().enumerate() {
+            let directive: HeaderValue = directive.clone().into();
+            match n {
+                0 => write!(output, "{}", directive).unwrap(),
+                _ => write!(output, ", {}", directive).unwrap(),
+            };
+        }
+
+        // SAFETY: the internal string is validated to be ASCII.
+        unsafe { HeaderValue::from_bytes_unchecked(output.into()) }
     }
 }
 
@@ -202,14 +189,6 @@ impl<'a> Iterator for IterMut<'a> {
     }
 }
 
-impl ToHeaderValues for CacheControl {
-    type Iter = option::IntoIter<HeaderValue>;
-    fn to_header_values(&self) -> crate::Result<Self::Iter> {
-        // A HeaderValue will always convert into itself.
-        Ok(self.value().to_header_values().unwrap())
-    }
-}
-
 impl Debug for CacheControl {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         let mut list = f.debug_list();

src/cache/cache_control/mod.rs

@@ -16,7 +16,7 @@ pub use cache_directive::CacheDirective;
 #[cfg(test)]
 mod test {
     use super::*;
-    use crate::headers::{Headers, CACHE_CONTROL};
+    use crate::headers::{Header, Headers, CACHE_CONTROL};
 
     #[test]
     fn smoke() -> crate::Result<()> {
@@ -25,7 +25,7 @@ mod test {
         entries.push(CacheDirective::NoStore);
 
         let mut headers = Headers::new();
-        entries.apply(&mut headers);
+        entries.apply_header(&mut headers);
 
         let entries = CacheControl::from_headers(headers)?.unwrap();
         let mut entries = entries.iter();