Add into_urllink() translater helper

libimagentrymarkdown/src/error.rs

@@ -1,6 +1,7 @@
 generate_error_module!(
     generate_error_types!(MarkdownError, MarkdownErrorKind,
-        MarkdownRenderError => "Markdown render error"
+        MarkdownRenderError => "Markdown render error",
+        LinkParsingError    => "Link parsing error"
     );
 );
 

libimagentrymarkdown/src/link.rs

@@ -1,8 +1,12 @@
+use error::MarkdownErrorKind as MEK;
 use result::Result;
 
 use hoedown::renderer::Render;
 use hoedown::Buffer;
 use hoedown::Markdown;
+use url::Url;
+
+use libimagerror::into::IntoError;
 
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub struct Link {
@@ -10,6 +14,23 @@ pub struct Link {
     pub link: String,
 }
 
+impl Link {
+
+    /// Translate a `Link` into a `UrlLink`
+    fn into_urllink(self) -> Result<UrlLink> {
+        Url::parse(&self.link[..])
+            .map(move |link| UrlLink { title: self.title, link: link, })
+            .map_err(Box::new)
+            .map_err(|e| MEK::LinkParsingError.into_error_with_cause(e))
+    }
+
+}
+
+pub struct UrlLink {
+    pub title: String,
+    pub link: Url,
+}
+
 struct LinkExtractor {
     links: Vec<Link>,
 }