libimagentryview: Rewrite error handling

lib/entry/libimagentryview/src/builtin/editor.rs

@@ -23,8 +23,8 @@ use libimagentryedit::edit::edit_in_tmpfile;
 
 use viewer::Viewer;
 use result::Result;
+use error::ResultExt;
 use error::ViewErrorKind as VEK;
-use error::ViewError as VE;
 
 pub struct EditorView<'a>(&'a Runtime<'a>);
 
@@ -37,8 +37,7 @@ impl<'a> EditorView<'a> {
 impl<'a> Viewer for EditorView<'a> {
     fn view_entry(&self, e: &Entry) -> Result<()> {
         let mut entry = e.to_str().clone().to_string();
-        edit_in_tmpfile(self.0, &mut entry)
-            .map_err(|e| VE::new(VEK::ViewError, Some(Box::new(e))))
+        edit_in_tmpfile(self.0, &mut entry).chain_err(|| VEK::ViewError)
     }
 }
 

lib/entry/libimagentryview/src/error.rs

@@ -17,6 +17,10 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 //
 
+use std::error::Error;
+
+use libimagerror::into::IntoError;
+
 error_chain! {
     types {
         ViewError, ViewErrorKind, ResultExt, Result;
@@ -51,10 +55,6 @@ error_chain! {
     }
 }
 
-pub use self::error::ViewError;
-pub use self::error::ViewErrorKind;
-pub use self::error::MapErrInto;
-
 impl IntoError for ViewErrorKind {
     type Target = ViewError;
 
@@ -62,7 +62,7 @@ impl IntoError for ViewErrorKind {
         ViewError::from_kind(self)
     }
 
-    fn into_error_with_cause(self, cause: Box<Error>) -> Self::Target {
+    fn into_error_with_cause(self, _: Box<Error>) -> Self::Target {
         ViewError::from_kind(self)
     }
 }

lib/entry/libimagentryview/src/lib.rs

@@ -40,7 +40,7 @@ extern crate toml;
 
 extern crate libimagstore;
 extern crate libimagrt;
-#[macro_use] extern crate libimagerror;
+extern crate libimagerror;
 extern crate libimagentryedit;
 
 pub mod error;