1 files changed, 99 insertions, 0 deletions
diff --git a/third_party/rust/xml-rs/src/attribute.rs b/third_party/rust/xml-rs/src/attribute.rs
new file mode 100644
index 0000000000..8728f496d7
--- /dev/null
+++ b/third_party/rust/xml-rs/src/attribute.rs
@@ -0,0 +1,99 @@
+//! Contains XML attributes manipulation types and functions.
+//!
+
+use std::fmt;
+
+use name::{Name, OwnedName};
+use escape::escape_str_attribute;
+
+/// A borrowed version of an XML attribute.
+///
+/// Consists of a borrowed qualified name and a borrowed string value.
+#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
+pub struct Attribute<'a> {
+    /// Attribute name.
+    pub name: Name<'a>,
+
+    /// Attribute value.
+    pub value: &'a str
+}
+
+impl<'a> fmt::Display for Attribute<'a> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}=\"{}\"", self.name, escape_str_attribute(self.value))
+    }
+}
+
+impl<'a> Attribute<'a> {
+    /// Creates an owned attribute out of this borrowed one.
+    #[inline]
+    pub fn to_owned(&self) -> OwnedAttribute {
+        OwnedAttribute {
+            name: self.name.into(),
+            value: self.value.into(),
+        }
+    }
+
+    /// Creates a borrowed attribute using the provided borrowed name and a borrowed string value.
+    #[inline]
+    pub fn new(name: Name<'a>, value: &'a str) -> Attribute<'a> {
+        Attribute { name, value, }
+    }
+}
+
+/// An owned version of an XML attribute.
+///
+/// Consists of an owned qualified name and an owned string value.
+#[derive(Clone, Eq, PartialEq, Hash, Debug)]
+pub struct OwnedAttribute {
+    /// Attribute name.
+    pub name: OwnedName,
+
+    /// Attribute value.
+    pub value: String
+}
+
+impl OwnedAttribute {
+    /// Returns a borrowed `Attribute` out of this owned one.
+    pub fn borrow(&self) -> Attribute {
+        Attribute {
+            name: self.name.borrow(),
+            value: &*self.value,
+        }
+    }
+
+    /// Creates a new owned attribute using the provided owned name and an owned string value.
+    #[inline]
+    pub fn new<S: Into<String>>(name: OwnedName, value: S) -> OwnedAttribute {
+        OwnedAttribute {
+            name,
+            value: value.into(),
+        }
+    }
+}
+
+impl fmt::Display for OwnedAttribute {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}=\"{}\"", self.name, escape_str_attribute(&*self.value))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::{Attribute};
+
+    use name::Name;
+
+    #[test]
+    fn attribute_display() {
+        let attr = Attribute::new(
+            Name::qualified("attribute", "urn:namespace", Some("n")),
+            "its value with > & \" ' < weird symbols"
+        );
+
+        assert_eq!(
+            &*attr.to_string(),
+            "{urn:namespace}n:attribute=\"its value with &gt; &amp; &quot; &apos; &lt; weird symbols\""
+        )
+    }
+}