feat(langtags): use true language tags in headers

Make hyper dependant on rust-language-tags providing complete parsing
and formatting of language tags. Remove builtin solution for simple
tags.

BREAKING CHANGE: AcceptLanguage and ContentLanguage use LanguageTag now,
Language removed from Hyper.

Cargo.toml

@@ -13,6 +13,7 @@ keywords = ["http", "hyper", "hyperium"]
 
 [dependencies]
 httparse = "0.1"
+language-tags = "0.0.7"
 log = "0.3"
 mime = "0.0.12"
 num_cpus = "0.2"

src/header/common/accept_language.rs

@@ -1,4 +1,5 @@
-use header::{Language, QualityItem};
+use language_tags::LanguageTag;
+use header::QualityItem;
 
 header! {
     #[doc="`Accept-Language` header, defined in"]
@@ -20,61 +21,47 @@ header! {
     #[doc=""]
     #[doc="# Examples"]
     #[doc="```"]
-    #[doc="use hyper::header::{Headers, AcceptLanguage, Language, qitem};"]
+    #[doc="use hyper::LanguageTag;"]
+    #[doc="use hyper::header::{Headers, AcceptLanguage, qitem};"]
     #[doc=""]
     #[doc="let mut headers = Headers::new();"]
+    #[doc="let mut langtag: LanguageTag = Default::default();"]
+    #[doc="langtag.language = Some(\"en\".to_owned());"]
+    #[doc="langtag.region = Some(\"US\".to_owned());"]
     #[doc="headers.set("]
     #[doc="    AcceptLanguage(vec!["]
-    #[doc="        qitem("]
+    #[doc="        qitem(langtag),"]
-    #[doc="            Language {"]
-    #[doc="                 primary: \"en\".to_owned(),"]
-    #[doc="                 sub: Some(\"us\".to_owned()),"]
-    #[doc="            }"]
-    #[doc="        ),"]
     #[doc="    ])"]
     #[doc=");"]
     #[doc="```"]
     #[doc="```"]
-    #[doc="use hyper::header::{Headers, AcceptLanguage, Language, QualityItem, Quality, qitem};"]
+    #[doc="# extern crate hyper;"]
-    #[doc=""]
+    #[doc="# #[macro_use] extern crate language_tags;"]
+    #[doc="# use hyper::header::{Headers, AcceptLanguage, QualityItem, Quality, qitem};"]
+    #[doc="# "]
+    #[doc="# fn main() {"]
     #[doc="let mut headers = Headers::new();"]
     #[doc="headers.set("]
     #[doc="    AcceptLanguage(vec!["]
-    #[doc="        qitem("]
+    #[doc="        qitem(langtag!(da)),"]
-    #[doc="            Language {"]
+    #[doc="        QualityItem::new(langtag!(en;;;GB), Quality(800)),"]
-    #[doc="                primary: \"da\".to_owned(),"]
+    #[doc="        QualityItem::new(langtag!(en), Quality(700)),"]
-    #[doc="                sub: None,"]
-    #[doc="             }"]
-    #[doc="        ),"]
-    #[doc="        QualityItem::new("]
-    #[doc="            Language {"]
-    #[doc="                primary: \"en\".to_owned(),"]
-    #[doc="                sub: Some(\"gb\".to_owned()),"]
-    #[doc="            },"]
-    #[doc="            Quality(800),"]
-    #[doc="        ),"]
-    #[doc="        QualityItem::new("]
-    #[doc="            Language {"]
-    #[doc="                primary: \"en\".to_owned(),"]
-    #[doc="                sub: None,"]
-    #[doc="            },"]
-    #[doc="            Quality(700),"]
-    #[doc="        ),"]
     #[doc="    ])"]
     #[doc=");"]
+    #[doc="# }"]
     #[doc="```"]
-    (AcceptLanguage, "Accept-Language") => (QualityItem<Language>)+
+    (AcceptLanguage, "Accept-Language") => (QualityItem<LanguageTag>)+
 
     test_accept_language {
         // From the RFC
         test_header!(test1, vec![b"da, en-gb;q=0.8, en;q=0.7"]);
         // Own test
         test_header!(
-            test2, vec![b"en-us, en; q=0.5, fr"],
+            test2, vec![b"en-US, en; q=0.5, fr"],
             Some(AcceptLanguage(vec![
-                qitem(Language {primary: "en".to_owned(), sub: Some("us".to_owned())}),
+                qitem(langtag!(en;;;US)),
-                QualityItem::new(Language{primary: "en".to_owned(), sub: None}, Quality(500)),
+                QualityItem::new(langtag!(en), Quality(500)),
-                qitem(Language {primary: "fr".to_owned(), sub: None}),
+                qitem(langtag!(fr)),
         ])));
     }
 }

src/header/common/content_language.rs

@@ -1,4 +1,5 @@
-use header::{Language, QualityItem};
+use language_tags::LanguageTag;
+use header::QualityItem;
 
 header! {
     #[doc="`Content-Language` header, defined in"]
@@ -20,42 +21,36 @@ header! {
     #[doc=""]
     #[doc="# Examples"]
     #[doc="```"]
-    #[doc="use hyper::header::{Headers, ContentLanguage, Language, qitem};"]
+    #[doc="# extern crate hyper;"]
+    #[doc="# #[macro_use] extern crate language_tags;"]
+    #[doc="# use hyper::header::{Headers, ContentLanguage, qitem};"]
+    #[doc="# "]
+    #[doc="# fn main() {"]
+    #[doc="let mut headers = Headers::new();"]
+    #[doc="headers.set("]
+    #[doc="    ContentLanguage(vec!["]
+    #[doc="        qitem(langtag!(en)),"]
+    #[doc="    ])"]
+    #[doc=");"]
+    #[doc="# }"]
+    #[doc="```"]
+    #[doc="```"]
+    #[doc="# extern crate hyper;"]
+    #[doc="# #[macro_use] extern crate language_tags;"]
+    #[doc="# use hyper::header::{Headers, ContentLanguage, qitem};"]
+    #[doc="# "]
+    #[doc="# fn main() {"]
     #[doc=""]
     #[doc="let mut headers = Headers::new();"]
     #[doc="headers.set("]
     #[doc="    ContentLanguage(vec!["]
-    #[doc="        qitem("]
+    #[doc="        qitem(langtag!(da)),"]
-    #[doc="            Language { "]
+    #[doc="        qitem(langtag!(en;;;GB)),"]
-    #[doc="                 primary: \"en\".to_owned(),"]
-    #[doc="                 sub: None,"]
-    #[doc="            }"]
-    #[doc="        ),"]
     #[doc="    ])"]
     #[doc=");"]
+    #[doc="# }"]
     #[doc="```"]
-    #[doc="```"]
+    (ContentLanguage, "Content-Language") => (QualityItem<LanguageTag>)+
-    #[doc="use hyper::header::{Headers, ContentLanguage, Language, qitem};"]
-    #[doc=""]
-    #[doc="let mut headers = Headers::new();"]
-    #[doc="headers.set("]
-    #[doc="    ContentLanguage(vec!["]
-    #[doc="        qitem("]
-    #[doc="            Language {"]
-    #[doc="                primary: \"da\".to_owned(),"]
-    #[doc="                sub: None,"]
-    #[doc="             }"]
-    #[doc="        ),"]
-    #[doc="        qitem("]
-    #[doc="            Language {"]
-    #[doc="                primary: \"en\".to_owned(),"]
-    #[doc="                sub: Some(\"gb\".to_owned()),"]
-    #[doc="            }"]
-    #[doc="        ),"]
-    #[doc="    ])"]
-    #[doc=");"]
-    #[doc="```"]
-    (ContentLanguage, "Content-Language") => (QualityItem<Language>)+
 
     test_content_language {
         test_header!(test1, vec![b"da"]);

src/header/common/mod.rs

@@ -103,10 +103,12 @@ macro_rules! __hyper__deref {
 macro_rules! __hyper__tm {
     ($id:ident, $tm:ident{$($tf:item)*}) => {
         #[allow(unused_imports)]
+        #[cfg(test)]
         mod $tm{
             use std::str;
             use $crate::header::*;
             use $crate::mime::*;
+            use $crate::language_tags::*;
             use $crate::method::Method;
             use super::$id as HeaderField;
             $($tf)*

src/header/shared/language.rs

@@ -1,45 +0,0 @@
-use std::str::FromStr;
-use std::fmt;
-
-/// A language tag.
-/// See http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.10
-///
-/// Note: This is no complete language tag implementation, it should be replaced with
-/// github.com/pyfisch/rust-language-tag once it is ready.
-#[derive(Clone, PartialEq, Debug)]
-pub struct Language {
-    /// The language tag
-    pub primary: String,
-    /// A language subtag or country code
-    pub sub: Option<String>
-}
-
-impl FromStr for Language {
-    type Err = ::Error;
-    fn from_str(s: &str) -> ::Result<Language> {
-        let mut i = s.split("-");
-        let p = i.next();
-        let s = i.next();
-        match (p, s) {
-            (Some(p), Some(s)) => Ok(Language {
-                primary: p.to_owned(),
-                sub: Some(s.to_owned())
-                }),
-            (Some(p), _) => Ok(Language {
-                primary: p.to_owned(),
-                sub: None
-                }),
-            _ => Err(::Error::Header)
-        }
-    }
-}
-
-impl fmt::Display for Language {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(f.write_str(&self.primary[..]));
-        match self.sub {
-            Some(ref s) => write!(f, "-{}", s),
-            None => Ok(())
-        }
-    }
-}

src/header/shared/mod.rs

@@ -2,12 +2,10 @@ pub use self::charset::Charset;
 pub use self::encoding::Encoding;
 pub use self::entity::EntityTag;
 pub use self::httpdate::HttpDate;
-pub use self::language::Language;
 pub use self::quality_item::{Quality, QualityItem, qitem, q};
 
 mod charset;
 mod encoding;
 mod entity;
 mod httpdate;
-mod language;
 mod quality_item;

src/lib.rs

@@ -141,6 +141,9 @@ extern crate traitobject;
 extern crate typeable;
 extern crate solicit;
 
+#[macro_use]
+extern crate language_tags;
+
 #[macro_use]
 extern crate mime as mime_crate;
 
@@ -157,6 +160,7 @@ pub use error::{Result, Error};
 pub use method::Method::{Get, Head, Post, Delete};
 pub use status::StatusCode::{Ok, BadRequest, NotFound};
 pub use server::Server;
+pub use language_tags::LanguageTag;
 
 macro_rules! todo(
     ($($arg:tt)*) => (if cfg!(not(ndebug)) {