From 1dbfdb01835927b08d6b583d46900aad96aeb4eb Mon Sep 17 00:00:00 2001
From: Richard Whitehouse <github@richardwhiuk.com>
Date: Sun, 29 Oct 2017 15:49:59 +0000
Subject: [PATCH] Support Content-Language header

---
 src/codec.rs  |  3 ++-
 src/parser.rs | 21 ++++++++++++++-------
 src/types.rs  |  5 ++++-
 3 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/src/codec.rs b/src/codec.rs
index 1ec9c14..09e2a8e 100644
--- a/src/codec.rs
+++ b/src/codec.rs
@@ -433,7 +433,8 @@ mod tests {
                            username=\"Alice\"\r\nCall-ID:f81d4fae-7dec-11d0-a765-00a0c91e6bf6@foo.\
                            bar.com\r\nCall-Info:<http://wwww.example.com/alice/photo.jpg>;\
                            purpose=icon\r\nContact:*\r\nContent-Disposition:\
-                           session\r\nContent-Encoding:gzip\r\nVia: localhost\r\n\r\n")
+                           session\r\nContent-Encoding:gzip\r\nContent-Language:en-gb\r\nVia: \
+                           localhost\r\n\r\n")
         });
 
         let finished = request.and_then(|(socket, _request)| {
diff --git a/src/parser.rs b/src/parser.rs
index de7320a..95c045a 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -12,10 +12,10 @@ use types::{PathSegment, HostPort, Host, Hostname, UriParameter, UriHeader, UriH
             AbsoluteUri, Uri, HierarchicalPath, Authority, UriPath, UserInfo, AbsolutePath,
             Scheme, Method, Transport, UserParam, Version, RequestLine, StatusLine, TopLine,
             Header, MediaType, MediaFullType, MediaParameter, MediaRange, GenericParam,
-            AcceptParam, AcceptRange, Coding, Encoding, LanguageRange, Language, AlertParam, Qop,
-            AuthenticationInfo, AuthParam, Algorithm, DigestResponse, Credentials, CallId,
-            Purpose, InfoParam, Info, NameAddr, ContactParam, ContactTarget, Contact,
-            DispositionType, Handling, DispositionParam, ContentCoding};
+            AcceptParam, AcceptRange, Coding, Encoding, LanguageTag, LanguageRange, Language,
+            AlertParam, Qop, AuthenticationInfo, AuthParam, Algorithm, DigestResponse,
+            Credentials, CallId, Purpose, InfoParam, Info, NameAddr, ContactParam, ContactTarget,
+            Contact, DispositionType, Handling, DispositionParam, ContentCoding};
 
 fn is_mark(c: u8) -> bool {
     c == b'-' || c == b'_' || c == b'.' || c == b'!' || c == b'~' || c == b'*' || c == b'\'' ||
@@ -560,13 +560,13 @@ named!(accept_encoding_header<Vec<Encoding>>, preceded!(
 
 named!(language_token<Vec<u8>>, many1!(alpha));
 
-named!(_language_range<Vec<Vec<u8>>>, separated_nonempty_list!(
+named!(language_tag<LanguageTag>, separated_nonempty_list!(
 		tag!(b"-"),
 		language_token));
 
 named!(language_range<LanguageRange>, alt!(
 	tag!(b"*") => { |_| LanguageRange::All } |
- 	_language_range => { |x : Vec<Vec<u8>>| LanguageRange::Range(x) }));
+	language_tag => { |x : LanguageTag| LanguageRange::Range(x) }));
 
 named!(language<Language>, tuple!(
 	language_range,
@@ -816,6 +816,12 @@ named!(content_encoding_header<Vec<ContentCoding>>, preceded!(
 		tag!(b","),
 		token)));
 
+named!(content_language_header<Vec<LanguageTag>>, preceded!(
+	tag!(b"Content-Language:"),
+	separated_nonempty_list!(
+		tag!(b","),
+		language_tag)));
+
 named!(pub header<Header>, alt!(
 // RFC 3261 Headers
 	accept_header => { |a| Header::Accept(a) } |
@@ -829,5 +835,6 @@ named!(pub header<Header>, alt!(
 	call_info_header => { |c| Header::CallInfo(c) } |
 	contact_header => { |c| Header::Contact(c) } |
 	content_disposition_header => { |(t, p)| Header::ContentDisposition(t, p) } |
-	content_encoding_header => { |e| Header::ContentEncoding(e) }
+	content_encoding_header => { |e| Header::ContentEncoding(e) } |
+	content_language_header => { |l| Header::ContentLanguage(l) }
 ));
diff --git a/src/types.rs b/src/types.rs
index 2beb957..2cb21a1 100644
--- a/src/types.rs
+++ b/src/types.rs
@@ -175,10 +175,12 @@ pub enum Coding {
 
 pub type Encoding = (Coding, Vec<AcceptParam>);
 
+pub type LanguageTag = Vec<Vec<u8>>;
+
 #[derive(Debug)]
 pub enum LanguageRange {
     All,
-    Range(Vec<Vec<u8>>),
+    Range(LanguageTag),
 }
 
 pub type Language = (LanguageRange, Vec<AcceptParam>);
@@ -308,6 +310,7 @@ pub enum Header {
     Contact(Contact),
     ContentDisposition(DispositionType, Vec<DispositionParam>),
     ContentEncoding(Vec<ContentCoding>),
+    ContentLanguage(Vec<LanguageTag>),
     From(Uri),
     To(Uri),
     Extension { name: String, value: String },
-- 
2.34.1