Basic synchronous GET with XHR

src/components/script/dom/bindings/str.rs

@@ -2,16 +2,60 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#[deriving(Encodable,Clone)]
+use std::hash::{Hash, sip};
+use std::str;
+
+#[deriving(Encodable,Clone,TotalEq,Eq)]
 pub struct ByteString(Vec<u8>);
 
 impl ByteString {
     pub fn new(value: Vec<u8>) -> ByteString {
         ByteString(value)
     }
+    pub fn as_str<'a>(&'a self) -> Option<&'a str> {
+        let ByteString(ref vec) = *self;
+        str::from_utf8(vec.as_slice())
+    }
 
     pub fn as_slice<'a>(&'a self) -> &'a [u8] {
         let ByteString(ref vector) = *self;
         vector.as_slice()
     }
+
+    pub fn eq_ignore_case(&self, other: &ByteString) -> bool {
+        // XXXManishearth make this more efficient
+        self.to_lower() == other.to_lower()
+    }
+
+    pub fn to_lower(&self) -> ByteString {
+        let ByteString(ref vec) = *self;
+        ByteString::new(vec.iter().map(|&x| {
+            if x > 'A' as u8 && x < 'Z' as u8 {
+                x + ('a' as u8) - ('A' as u8)
+            } else {
+                x
+            }
+        }).collect())
+    }
+    pub fn is_token(&self) -> bool {
+        let ByteString(ref vec) = *self;
+        vec.iter().all(|&x| {
+            // http://tools.ietf.org/html/rfc2616#section-2.2
+            match x {
+                0..31 | 127 => false, // CTLs
+                40 | 41 | 60 | 62 | 64 |
+                44 | 59 | 58 | 92 | 34 |
+                47 | 91 | 93 | 63 | 61 |
+                123 | 125 | 32  => false, // separators
+                _ => true
+            }
+        })
+    }
 }
+
+impl Hash for ByteString {
+    fn hash(&self, state: &mut sip::SipState) {
+        let ByteString(ref vec) = *self;
+        vec.hash(state);
+    }
+}